土工基础

›› 2014, Vol. 28 ›› Issue (3): 84-86.

• 工程实录 • 上一篇    下一篇

灰色关联度法在排桩基坑安全评价中的应用

肖荣军1，马 威1，华业爽2，宁武超3，史宏彦2   

  1. （1.广东省佛山地质局，广东佛山 528000；2.广东工业大学土木与交通工程学院，广州 510006；
    3.广东华固工程有限公司，广州 510010）
  • 收稿日期:2013-09-10 出版日期:2014-06-20 发布日期:2014-06-28
  • 作者简介:肖荣军（1983-），男，助工，工学硕士，研究方向为深基坑工程及岩土工程反演分析。

Application of GRA in a Deep Excavation Supported by Anchored Tangent Pile Walls

XIAO Rongjun1，MA Wei1，HUA Yeshuang2，NING Wuchao3,SHI Hongyan2
   

  1. （1.Guangdong Foshan Geology Bureau, Foshan, 528000；
    2.Faculty of Civil and Transportation Engineering Guangdong University of Technology，Guangzhou 510006；
    3.Guangdong Huagu Engineering Co. Ltd., Guangzhou 510010）
  • Received:2013-09-10 Online:2014-06-20 Published:2014-06-28

摘要： 应用灰色关联度分析法，进行广州五山街道社区服务中心大楼排桩基坑安全性综合评价。将此基坑分为多个评价单元，结合影响基坑稳定与安全内因和外因，选取支撑类型、围护结构刚度、基坑旁载(不对称荷载)、放坡平台宽度、开挖与架立内撑时间间隔、超挖、锚索（锚杆）施工质量等7个具有代表性的影响因子作为评价因素，据唐业清教授统计多起基坑事故影响因素综合评价分值和现场监测信息为评价参考指标，应用灰色关联度分析法将此基坑划分3个安全等级，定量分析其安全性，为类似基坑安全分析与预防提供参考。

关键词: 灰色关联度, 基坑安全, 综合评价

Abstract: The stability of the deep excavation for the community service center of Guangzhou Wushan Avenue is comprehensively evaluated by using Gray Relation Analysis (GRA) method. The deep excavation is supported by anchored tangent pile walls. The entire excavation supporting system is divided into several sub units so that the representative factors that might impact the stability of the excavation can be evaluated. These seven (7) factors are: internal supporting type, stiffness of the supporting system, surcharge near the excavation (asymmetric loading condition), width of the berm in front of the excavation, time lapse between the excavation and internal bracing, amount over excavation, anchor installation quality. The comprehensive evaluation value numbers recommended from the back analysis of the case history of the deep excavation failures as well as the insitu monitoring data are used as the reference of the evaluation. This deep excavation site can be quantitatively classified into [JP2]three safety categories based on the GRA approach. The GRA approach provides a useful tool for the prediction of the excavation.

Key words: Gray Correlations, Deep Excavation Safety Evaluation, Comprehensive Evaluation