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28 February 2022, Volume 36 Issue 1 Previous Issue    Next Issue

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Structure Analysis and Optimum Design of Soldier Pile System with Cross Bracing as a Deep Excavation Supporting System LIAO Jingwang, LIU Chuanshun, LIU Yong 2022, 36 (1):  1-4.  Abstract ( 349 )   Save The cross braced single row reinforced concrete soldier pile is suitable for the support of deep excavation with the narrow and long geometry. The soldier pile spacing, embedment depth and the horizontal distance of cross bracing are the main engineering design parameters that affect the safety, reliability, and construction cost of the supporting system. The Yujiang Peninsula drainage culvert project was used as an example for the analysis. In the analysis the FLAC3D software was used to analyze the deformation, force and stability of soldier piles under different conditions. The diagram of displacement and bending moment change along the soldier pile could be developed. Related Articles | Metrics

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Influence of Deep Excavation Induced Deformation on the Adjacent Buildings TU Fenfen 2022, 36 (1):  5-8.  Abstract ( 385 )   Save With the increasing number of deep excavation projects in urban area, the buildings that are adjacent to these excavations will inevitably be affected by the construction activities. The degree of the influence is affected by the minimum distance between the surrounding buildings and the proposed excavation; Also, it is dependent to the types of the existing buildings as well as the excavation. In order to further study the deep excavation induced deformation on the nearby existing buildings, the foundation excavation supporting of Shenzhen Kingkey East Coast Times Building is presented in this paper. The excavation process was three-dimensionally simulated and the deformation of the deep excavation on the adjacent buildings was investigated. The results show that the deep excavation induced deformation could influence the nearby building. Compared with the high-rise and pile supported buildings, buildings with shallow foundation are more affected by the deep excavation. The results show that all the excavation induced deformation parameters on adjacent buildings meet the code requirements. Related Articles | Metrics

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Local Failure Analysis and Mitigation of a Deep Excavation WANG Haicheng, WANG Wei, ZHANG Long 2022, 36 (1):  9-11.  Abstract ( 311 )   Save With the development and utilization of urban construction and underground space in Wuhan, deep excavation engineering has received wider and wider applications. The size, excavation depth and supporting methods of deep excavation are moving towards a larger, deeper and more complex direction. However, in the process of its development, some hazards, such as land subsidence, deep excavation collapse, water and quick sand gushing, are still occasionally encountered during the construction. These hazards pose new challenges to the builders and developers. This paper presents a deep excavation supporting in soft soil case history in Wuhan. Although the excavation supporting system passed the peer review in the design stage, there was still local instability in the construction. This paper comprehensively analyzes the reasons and proposes solutions for the overload on the top of the slope and the impact of excessive rainstorm. Related Articles | Metrics

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Stability Analysis and Mitigation Measures of Karst Rock Cavities Surrounding Zhoupangou Tunnel LIU Gaoxing, SHI Chunyu, XU Dongyang, HUO Xicai, DU Hengkai, YANG Fanjie 2022, 36 (1):  12-15.  Abstract ( 258 )   Save Based on the special geological conditions of the karst rock cavity section in the Zhoupangou tunnel construction at Station LK28+284 on the left side of the tunnel exit, this paper presents a case history of stability evaluation. The through geological radar detection and engineering geological analysis, the surrounding karst rock cavity stability of the typical tunnel section was evaluated and stability mitigation measures of karst rock cavities near the crest and sides of the tunnel were proposed. These mitigation measures were also verified as appropriate during the construction. Related Articles | Metrics

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Mitigation Measures of Mudflow Hazards in Rolling Hill Area in Fujian GONG Kuangzhou 2022, 36 (1):  16-20.  Abstract ( 341 )   Save Fujian is located at southeast coastal area of China with majority of the rolling hill topography throughout the entire province. In the mountains of the northwest part of the province, geohazards, such as, shallow rock collapse and landslides, are frequently encountered. Triggered by heavy precipitations within a short period, the colluvium is accumulated at the bottom of the valley and forms mud flow slides that containing large quantity of soils and rock blocks. These potential mud flows are in the widely distributed mud source area with short passing zone or without passing zone and usually have the characteristics of potentially affecting a large damage area and with significant potential damage. The mud flow mitigation design should be based on the development of the mud flow mechanism and topographic characters of the mud flows. The engineering mitigation measures include reinforcing the source zone, blocking the passing through zone or placing energy dissipation steps and installing discharging channels in the accumulation zone. The best design should consider the sitespecific conditions and select the most effective available solutions. Related Articles | Metrics

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Analysis and Treatment of Seepage Failures in a Deep Excavation for a Building Structure WANG Hao, LI Cheng, YUAN Zirui 2022, 36 (1):  21-24.  Abstract ( 378 )   Save In highly permeable silty soils, cut-off curtain induced deep excavation supporting structure failures are frequently encountered under the complexity of geological conditions and underground buried objects. This paper presents a case history of jet-grouting formed cut-off wall failure in a deep excavation project in Suqian, Jiangsu Province. The detail information of subsurface conditions, adjacent existing buildings, and construction of the cut-off wall installations are presented. Factors that might result in the seepage failure and potential mitigation measures are also evaluated in the paper. Methods that were used in the seepage minimization are introduced in the paper. The site construction monitoring data verified that the cut-off wall seepage failure mitigation methods are effective. Related Articles | Metrics

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Application of the Minimum Repetitive Zone in Estimating the Area Replacement Ratio of Composite Soils in Ground Improvement HAO Weidong, CHU Xiaorun 2022, 36 (1):  25-28.  Abstract ( 323 )   Save In the ground improvement practice, the design parameter of the area replacement ratio in composite soils with different column spacings, the conventional equivalent circular area conversion method is traditionally used, which requires higher spatial abstract capability and requires many calculations. This article introduces a concept of minimum repetitive unit to select the cell of column and soil and the application on the calculation of area replacement ratio of composite soils under different column spacings and distributions. Compared with the conventional method, this method is easier to understand and has the advantage of simple calculation. This proposed method can provide guidance for the soil improvement practitioners for estimating the area replacement ratio. Related Articles | Metrics

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Study of the Anisotropy within Different Components of Jointed Rock Mass WANG Rongda, LIU Tiexin, ZHANG Kai 2022, 36 (1):  29-32.  Abstract ( 160 )   Save This paper studies the anisotropic properties of the jointed rock mass at the inlet of the Changheba Power Station. The digital close-range photogrammetry technology was used to obtain the topographic information of the jointed surface and imported the information into the MATLAB to generate a three-dimensional jointed rock mass digital elevation model. Based on the wavelet analysis theory, the joint traces in different directions of the jointed surface are separated into the first-order large undulating traces that representing the main contour shape and the second-order small convex traces that representing the secondary roughness, and the joint roughness coefficient (JRC) of the traces was calculated and the anisotropy characteristics of different components of the jointed surface were studied. The results show that: (1) The first-order undulating part and the second-order convex part of the jointed trace have different roughness development dominant directions. (2) Both the first-order undulating trace and the second-order undulating trace of the joint surface have obvious roughness anisotropy. The results provide a basis for the study of the mechanical behavior of joint surfaces and the anisotropy of seepage behavior. Related Articles | Metrics

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Analysis of Environmental and Geological Effect of Large Scale Soil Fill in City: A Case Study of Baozi Creek Basin in Wuhan DENG Qingjun, CHEN Yuru, PENG Lihui 2022, 36 (1):  33-36.  Abstract ( 370 )   Save The placement and disposal of massive waste soils and minimization of the adverse effects on the environmental and geological effect induced by the underground space development in the urban area have received more and more attentions recently. This paper presents the large-scale waste soil fills in the Baozi Creek Basin of Wuhan case history. The subsurface conditions were comprehensively investigated and evaluated, and the geological and environmental effects of large-scale waste soil fills were analyzed. This paper also states that the large-scale soil fill changes the original topography, changes the conditions of groundwater and groundwater recharge, imposes an adverse effect on the groundwater and soil environment, and develops an unstable slope in fills. On the other hand, the soil fill will encroach on land resources, induce soil erosion. The improper handling of waste soil may even lead to safety hazards such as collapse, landslides, and mudslides. Suggestions of better utilization of the waste soils and minimizing the wide spread of waste soils are also proposed the paper. Related Articles | Metrics

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Comparison and Selection of Foundation Types Using BIM Forward Design DAI Chengyuan, REN Junlin, JIANG Wenan 2022, 36 (1):  37-41.  Abstract ( 371 )   Save Foundation type selection is an important content of the building structure design that is related to the overall safety of the building structure. Currently, the selection of foundation type is made based on the geological and hydrogeological conditions, topographical conditions, superstructure information and experience of the structural engineer and throughout the settlement and bearing resistance estimations. This paper combines the concept of the forward design in the Boulding Information Model (BIM) in the foundation type selection design and subsurface conditions are represented by the Revit geological model. So that the stratigraphy of soil and rocks can be visualized. The foundation embedment and dimensions are presented visually in the BIM system. The advantage of using BIM system is that the selection of foundation system can be accelerated throughout the visualization.   Related Articles | Metrics

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Slope Stability Analysis Using Three-Dimensional Nonlinear Approach HUANG Liang 2022, 36 (1):  42-46.  Abstract ( 317 )   Save Slope stability analysis is widely applied in various construction projects, and its accurate analysis is of great significance in the construction planning phase. In order to achieve the comprehensive analysis of slope stability, this study combines the nonlinear finite element analysis method and the multi grid network method as well as studies the slope stability of a hydropower station construction site by constructing a three-dimensional nonlinear finite element calculation model. The results show that there are seven sliding blocks within the entire slope, and the safety factor of the shallow sliding block is generally higher than those of deeper sliding blocks, which is greater than 1.3. That is, the stability of the shallow layer is higher. The construction excavation will reduce the stability of the slope in general. When the slope is constructed and if the seismic loads and construction loads are imposed, the coefficient stability of the shallow slide block increases and therefore the stability increases, while the safety factor of the deeper slide decreases gradually and the stability is reduced. Related Articles | Metrics

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Studies on the Calcium Chloride Improved Red Clay Soils JIANG Tinghui 2022, 36 (1):  47-50.  Abstract ( 496 )   Save In order to explore the influence of calcium chloride on the water holding capacity, mechanical properties and critical moisture content of Guilin Red Clay soils, the desiccation, unconsolidated undrained direct shear and critical moisture content tests were conducted by using adding 10% calcium chloride content of the soil mass by weight into the soil samples. The results show that the liquid limit of red clay decreases, the plastic limit slightly increases, and the plasticity index decreases; when calcium chloride is added to the red clay soil samples, the electric double layer on the surface of soil particles is compressed and the water film of the diffusion layer becomes thinner, which leads to the decrease of the liquid limit of red clay. At 25℃, CaCl2·6H2O is the main reaction product of CaCl2. The CaCl2·6H2O solution has a specific heat capacity greater than the water, and the evaporation rate is lower than that of the pure water, which makes the fracture development of the calcium chloride red clay weaker than that of the red clay soil, and improves the water holding capacity of red clay soil samples. The addition of the calcium chloride weakens the mechanical properties of red clay soil samples. The cohesion of the red clay increases with the addition of the calcium chloride, and the internal friction angle decreases. Related Articles | Metrics

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Distribution and Engineering Properties of Red Sandstone Bedrock in Wuhan Area LIU Yazhou, PANG Jiancheng 2022, 36 (1):  51-56.  Abstract ( 310 )   Save Wuhan Red Bed is a reddish colored sandstone bedrock that is widely distributed in the City of Wuhan area. The Wuhan Red Bed has the special planar distribution and the strata combination mode, as well as the lithologic properties. Further, the engineering and geological characteristics of this bedrock are; alternating of soft and hard lenses, varying degrees of cementation, a significant variation range of compressive strength, and relatively lacking groundwater, poor permeability and other hydrogeological characteristics, which, in turn, has a great impact on the engineering constructability. This paper evaluates a large number of recent subsurface investigation results and updates the plane distribution profile of Wuhan Red Bed rocks, as well as revealing the characteristics of vertical four instinct steps distributions and strata combination. The heterogeneity of material composition and strength, softening and dissolution properties of calcite-cemented Wuhan Red Bed rocks, which are induced by the change of sedimentary environment, are mainly elaborated. The first-hand data of the bearing capacity, deformation, acoustic wave velocity, and permeability of rock mass obtained from the in-situ and field tests are statistically analyzed. This paper provides important guiding significance for the investigation, design, and construction of foundations in the City of Wuhan. Related Articles | Metrics

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Prediction of Bearing Capacity of Laterally Loaded Piles Based on Support Vector Machine TANG Lingming, SONG Yu, CHEN Xuejun, HUANG Xiang, JIANG Zhenhua 2022, 36 (1):  57-60.  Abstract ( 339 )   Save The lateral load capacity of a single pile is an important parameter in the civil engineering design practice. To establish the nonlinear relationships among potential influencing factors, a Support Vector Machine (SVM) model for predicting the capacity of laterally loaded piles was established. By learning from a small number of samples, this model can accurately predict the prediction samples that only know the potential influencing factors. The accuracy of the model was verified by comparing the prediction results of the SVM model and BP neural network model. Both the mean relative error and the root mean square error are used to evaluate the overall performance and stability of each model. The high reliability of the predicted results was verified by the confidence interval, and all the predicted values are within the confidence interval of 90%, 95% and 97%. The Maximum Relative Error (MXAE) of SVM is 5.41%, the MRE is 2.81%, and the RMSE is 2.0278. Compared with the prediction results of BP neural network, the SVM results are more accurate. The SVM model is therefore feasible in predicting the bearing capacity of laterally loaded piles and provides a new method for its acquisition. Related Articles | Metrics

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Settlement Analysis and Study of a Proposed Subway Underpass the Existing Pile Supported Bridge QIAO Yongli 2022, 36 (1):  61-64.  Abstract ( 373 )   Save The subway transferring stations and crossing of various subway alignments are frequently encountered in the underground transportation construction as the development of urban rail transit projects. The under crossing the existing rail tunnels and underground stations for the proposed subway will induce a significant challenge for the construction. The proposed construction was simulated by the three-dimensional finite element numerical model and the site-specific subsurface conditions were considered. The settlement of the existing pile supported bridge was simulated under various construction control measure. The results indicate that numerical model predicted values were similar to the construction monitoring data. Related Articles | Metrics

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Numerical Simulation and Control Measures of Seepage Field and Displacement Field of a Shielded River Crossing Tunnel LIU Haifeng, DONG Bangsuo, ZHU Jinlong 2022, 36 (1):  65-69.  Abstract ( 380 )   Save Based on the engineering practice of a river-crossing tunnel of the Hangzhou, a three-dimensional numerical model for the excavation of the shield tunnel at the bottom of the river was established. Based on principles of the fluid-solid coupling, the seepage field and the displacement field around the underwater tunnel were predicted and evaluated. The seepage field was distributed in a loophole shape within one time the diameter of the tunnel, and the maximum settlement value of the riverbed was on the right side of the double-lane tunnel. The actual variation of the monitored parameters during the excavation was explored, and there was a certain correlation among the shield thrust, the grouting pressure and the soil pressure. Finally, the control measures for the construction of the shielded tunnel at the bottom of the river were proposed. Related Articles | Metrics

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Comparative Study of Sand Cone and Cutting-Ring Methods in Determining Degrees of Compaction of Foundation Soils GU Liqiang, LIU Peng, ZHANG Kaiwei, LI Zhao 2022, 36 (1):  70-73.  Abstract ( 1143 )   Save In the evaluation of degree of compaction of soils surrounding piles, the unit weight testing method usually varies with different backfill materials. The sand cone method is usually applied in various soil materials, the cuttingring method is not usually applicable to loose granular materials. When the target soil is suitable for both testing methods, the comparative testing using both methods is conducted and the advantages as well as disadvantages of each testing method are summarized so that the most appropriate test method can be applied in the site specific conditions and soils. Related Articles | Metrics

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Effect of Temperature and Dry-Wet Cycles on the Atterberg Limits of Red Clay SHI Jianfei, XIAO Guiyuan, 2022, 36 (1):  74-77.  Abstract ( 332 )   Save It is known that the temperature variations and dry-wet cycles have effects on the on the physical properties of red clay. To further accurately study the influence of temperature and dry-wet cycles on the liquid plastic limit of red clay, the Guilin red clay was used as the study target. Under the same conditions of moisture content and degree of compaction, the red clay soil samples were subjected to dry-wet cycles and did not experience dry-wet cycles. The test results show that, the plastic limit, liquid limit and plastic index of the soil at different temperatures and different cycles are not fixed values. Comparing the red clay that has experienced the dry-wet cycle and that did not experience the dry-wet cycle, at the same curing temperature, with the increase of the number of cycles, the wL of the soil sample gradually decreases, but the wP and IP of the soil sample have no obvious change; Under the same number of cycles, as the temperature increases, the wL and IP of the soil samples first decrease and then increase, while the wP gradually increases.  Related Articles | Metrics

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Acceptance Testing Methods of Age-Related Soil-Cement Mixing Columns LUO Bingsheng, WANG Hui, XIE Zhaoyu 2022, 36 (1):  78-81.  Abstract ( 394 )   Save The cement mixed soil is a unique material formed by artificially mixing cement and soil. The strength of the cement mixed soil is related to many factors such as cement mixed soil strength grade, physical and mechanical properties of original soil, and mixing times and uniformity. By studying the strength increment features of 90 days curing time of the indoor prepared cement mixed soil samples and the on-site soil-cement columns, this article proposes a formula to predict the age-related strength and characteristic value of vertical bearing capacity of cement mixed soil and soil-cement column the acceptance test methods of the age-related soil-cement columns. Related Articles | Metrics

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Factors Influencing the Compressive Strength of Fly Ash-Cement Mixed Soils CUI Qi 2022, 36 (1):  82-84.  Abstract ( 257 )   Save In order to study the influence of different conditions on the compressive strength of fly ash-cement mixed soils, the unconfined compressive strength as well as electronic microscope scanning tests on mixed soil samples with different mixing ratios curing ages and curing environments were carried out. The test results show that the mixing ratio, curing age and environment all have the obvious influence on the compressive strength of the mixed soil samples. Under the same curing age and environment, the higher cement content in soils, the higher the compressive strength of the mixed soils. Under the same mixing ratio and curing environment, the compressive strength of the soil sample increases with the growth of curing age. Under the same mixing ratio and curing age, humidity has a decisive influence on the compressive strength of the tested samples, the lower the humidity, the higher the compressive strength of the soils samples, the higher the humidity, the lower the compressive strength, which is mainly related to the moisture content of soil samples. Related Articles | Metrics

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Experimental Study on Mix Ratio of Cement Admixture Lime Pile CHENG Zhi, ZHENG Xiaomin, HE Shikai 2022, 36 (1):  85-88.  Abstract ( 262 )   Save Fly ashes are frequently used as one of the admixtures for the lime columns in ground improvement projects. The disadvantages the utilization of the fly ashes are the relatively low strength and the existence of soft zones within the lime columns. Further, the environmental requirements for the dust control in airs can hardly be met during the transportation and the storage of the fly ashes at the site. To minimize these shortcomings of using fly ashes, the low strength grade cement was successively utilized as the admixtures in the lime columns. The laboratory free water absorption and other tests were conducted on lime-cement-soil mixtures with various cement ratios. The test results indicate that the low strength grade cement is an ideal admixture in the lime columns applied in ground improvement projects. Related Articles | Metrics

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Preliminary Experimental Study on the Volumetric Creep of Calcareous Coral Sand YEERNAER Haiyilati, ZHANG Yan 2022, 36 (1):  89-92.  Abstract ( 331 )   Save In recent years, a series of man-made lands have been built and extended by the means of hydraulic dredging in the South China Sea. The main dredging material used was the calcareous coral sand extracted from nearby lagoons. As a special geomaterial, the mechanical properties of calcareous coral soil are different from that of the conventional terrestrial soil. It is of great significance to study the timedependent creep characteristics of the calcareous coral sand for evaluating the long-term post-construction deformation of lighthouses, airports, breakwaters and other structures constructed on dredged coral reefs. In this study, the volumetric creep test of the calcareous coral sand is carried out by the triaxial drainage test. It is found that the volume of the calcareous coral sand undergoes the significant creep deformation with time under constant loading of confining pressure and presents attenuation creep. Furthermore, a modified Burgers softmatter model is adopted to fit the experimental data. It is observed that this creep model can describe volumetric creep process of calcareous coral sand very well. Related Articles | Metrics

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Consolidation Coefficient of Soft Soil Obtained by Flat Dilatometer Test HUANG Fuqiang 2022, 36 (1):  93-95.  Abstract ( 348 )   Save The horizontal consolidation coefficient of the soft soil is an important parameter for both the foundation settlement analysis and the numerical simulations. The consolidation value obtained from the laboratory test is often inconsistent with the field performance. The flat dilatometer test has obvious advantages in the accurate determination of horizontal consolidation coefficient of soft soil. This paper introduces the spatial and temporal distribution of pore water pressure of soft soil during the penetration process of flat dilatometer test and obtains the calculation formula of horizontal consolidation coefficient. Combined with the engineering practice, the analytical results are compared with the laboratory test values. The research results show that the horizontal consolidation coefficient measured by the laboratory test and the calculated value of flat dilatometer test for both peaty silty clay and silt can be obtained. The former is 11.0 times of the latter, and the latter has a larger discrete type. Related Articles | Metrics

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Experimental Study of the Lateral Swelling Pressures in Remolded Expansive Soils WAN Lianglong, ZOU Weilie 2022, 36 (1):  96-101.  Abstract ( 399 )   Save The lateral swelling pressure in expansive soil is an important parameter for the design of the retaining wall in the area with expansive soils. To explore the simple measurement method of the lateral swelling pressure in expansive soils and the influence of the increased water content, the compaction induced residual lateral pressure and wetting-drying cycles on the lateral swelling pressure, a remolded medium expansive soil was tested by using the modified K0 consolidometer. Testing results indicated that measuring the lateral swelling pressure by using the K0 consolidometer is reliable; wetting-drying cycles and compaction induced residual lateral pressure do not influence the lateral swelling pressure; and the increased water content apparently affects lateral swelling pressure. Related Articles | Metrics

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Model Studies of the Uplift Capacity of Plated Ground Anchors ZHOU Zhen 2022, 36 (1):  102-105.  Abstract ( 282 )   Save Laboratory model tests were conducted to study the movement of ground anchor and its surrounding soils under the uplifting load. An anchor-plate theory is proposed base based on the test results. The anchor-plate effect is the interaction between the anchor plate and the anchor in the sandy soils. The results indicate that, the peak uplift resistance is not simply the summation of the resistances of the anchor plate and the grouted shaft of the anchor. Under shallow embedment condition in loose sand, the ultimate resistance of the plated ground anchor is 149% of the ultimate capacity of anchor plate or anchor shaft alone. Under the deep embedment in dense sand, the ultimate capacity of the plated anchor is only 93% of the single component resistance from the anchor or shaft. It is therefore indicated that the relative density of the sand, and the plate embedment depth have significant influence on the plated ground anchor uplift resistance and the interaction of both factors are important. Related Articles | Metrics

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Experimental Studies of the Uplift Capacity of Expanded Shaft Piles in Sand DONG Hao, ZHANG Xin, WANG Liuyue 2022, 36 (1):  106-109.  Abstract ( 311 )   Save The current studies on the expanded shaft piles are concentrated on the axial resistance characteristics and very few research on the mechanism of the uplift characteristics and ultimate uplift capacity theoretical estimations are reported. Therefore, an un-intrusive testing method, Particle Image Velocimetry (PIV), was used to measure the deformation of the surrounding soils surrounding the expanded shaft pile. The influence of the embedment depth, relative density of sand and the diameter of expanded shaft piles on the uplift capacity are evaluated. The analytical results show that the relative density is a major factor that affects the uplift capacity of the expanded shaft piles. The uplift performance of the expanded shaft piles in the dense sand is more than three times that of in the loose sand. The test results also indicate that, due to the low relative density and high compressibility of the loose sand, in order to improve the uplift capacity of the single expanded shaft piles and reduce pile displacement, the diameter of the expanded shaft portion should be 2.5 times of the shaft diameter. For piles in dense sand, the performance of the expanded shaft pile is a process of shearing and dilatancy under the action of vertical uplifting load. The shear stress at the expanded plate is relatively concentrated. As the diameter of the expanded plate increases, the displacement in the upper soil influence zone of the expanded plate continues to be affected. With the increase of the diameter, the sliding range of the upper part of the plate along the bottom surface of the expanded plate increases. In order to improve the uplift capacity of the expanded shaft pile in the dense sand, the diameter of the expanded plate of the expanded shaft pile is optimized to be the three times of the shaft diameter. Related Articles | Metrics

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Influence of Temperature and Gravity Stress on Thermal Properties in Shanghai Soils HUANG Hui , 2022, 36 (1):  110-114.  Abstract ( 342 )   Save The thermal physical properties of eight (8) soils collected from Fengxian District of Shanghai were laboratory evaluated under the effects of temperature and the coupling effect of temperature-deadweight stress. The changes of thermal conductivity, specific heat capacity and thermal diffusivity of different soils under the coupling effect of temperature and temperature-deadweight stress were studied respectively. The results show that the thermal conductivity and the thermal diffusivity ranking from high to low are sandy silt, silty clay and clay respectively, and their specific heat capacities are opposite ranked. The value of thermal conductivity, thermal diffusion coefficient and temperature are directly proportional to the value of specific heat capacity and temperature value is inversely relationship; under the coupling effect, the maximum thermal conductivity can be increased by 9.8%, the maximum specific heat capacity can be decreased by 25.4%, and the maximum thermal diffusivity can be increased by 28.1%. Related Articles | Metrics