Influence of Moisture Content and DryingWetting Cycles on the Shear Strength of Silty Soil Sample from “Meadow Land” in the West Bank of Qinghai Lake

Soil Engineering and Foundation ›› 2022, Vol. 36 ›› Issue (5): 791-795.

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Influence of Moisture Content and DryingWetting Cycles on the Shear Strength of Silty Soil Sample from “Meadow Land” in the West Bank of Qinghai Lake

LIAN Xiaoliang1, 2, LIU Jianzheng3, ZHONG Xiaochun3, YANG Qihui4, LIAO Yi5， ZHANG Lei5

(1.The 23rd Metallurgical Construction Group Co. Ltd., China Minmetals, Changsha 410014；
2.Qinghai China Railway Highway Construction Management Co. Ltd., China Minmetals, Xining 810000;
3.China Railway No. 5 Engineering Group Co. Ltd., Guiyang 550003；
4.Qinghai Provincial Transportation Planning Design and Research Institute Co. Ltd., Xining 810000；
5.School of Construction Engineering, Kunming University of Science and Technology, Kunming 650500)

Received:2021-11-23 Revised:2021-12-05 Online:2022-10-30 Published:2022-10-27

Abstract

Abstract: This paper presents a highway construction engineering case history along the west bank of Qinghai Lake. The study selected a typical silty soil from the “Meadow Land” from the west bank of Qinghai Lake. The influence of the moisture content and the drying and wetting cycles on the shear strength parameters was evaluated throughout the index property tests, drying and wetting tests and dire shear tests. The results show that the shear strength indices c and φ of the unmodified silt first increase and then decrease with the increase of moisture content, and the optimal moisture content in the soil sample for the best the shear strength is about 30% . The values of c, φ and the shear strength of remolded silt decrease with the increase of wetting-drying cycles. When the cycles exceed 5 times, the moisture content has little effect on the shear strength.

Key words: Qinghai Lake, Meadow Land, Moisture Content, Drying-Wetting Cycles, Shear Strength Parameters

CLC Number:

TU411

LIAN Xiaoliang, , LIU Jianzheng, ZHONG Xiaochun, YANG Qihui, LIAO Yi, ZHANG Lei. Influence of Moisture Content and DryingWetting Cycles on the Shear Strength of Silty Soil Sample from “Meadow Land” in the West Bank of Qinghai Lake[J]. Soil Engineering and Foundation, 2022, 36(5): 791-795.

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Influence of Moisture Content and DryingWetting Cycles on the Shear Strength of Silty Soil Sample from “Meadow Land” in the West Bank of Qinghai Lake

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