[1]崔广芹,马晨光,徐亚利.黄土基坑卸荷影响深度的试验研究及工程应用[J].西安建筑科技大学学报:自然科学版,2012,44(06):824-828.[doi:10.15986/j.1006-7930.2012.06.011]
　CUI Guang-qin,MA Chen-guang,XU Ya-li.Experimental study and engrineering application of loess-pit excavation[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2012,44(06):824-828.[doi:10.15986/j.1006-7930.2012.06.011]
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黄土基坑卸荷影响深度的试验研究及工程应用()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
44
期数:
2012年06期
页码:
824-828
栏目:
出版日期:
2012-12-31

文章信息/Info

Title:
Experimental study and engrineering application of loess-pit excavation
文章编号:
1006-7930(2012)06-0824-05
作者:
崔广芹1; 马晨光2; 徐亚利3
(1.西安建筑科技大学土木工程学院,陕西 西安 710055;2.西北综合勘察设计研究院,陕西 西安 710003; 3.皖西学院建筑与土木工程学院,安徽 六安 237012)
Author(s):
CUI Guang-qin1;  MA Chen-guang2;  XU Ya-li3
(1.School of Civil Engineering, Xian University of Architecture and Technology, Xian 710055, China; 2.Northwest Research Institute of Engineering Investigations and Design, Xian 710003, China; 3.Department of Architecture and Civil Engineering, West Anhui University, Luan 237012, China)
关键词:
黄土基坑; 回弹变形; 卸荷比; 固结-回弹试验; 影响深度
Keywords:
loess foundation pit;  rebound displacement;  unloading ratio;  consolidation-rebound test;  influence depth
分类号:
TU444
DOI:
10.15986/j.1006-7930.2012.06.011
文献标志码:
A
摘要:
通过不同固结压力的常规固结回弹试验模拟了黄土基坑大面积卸荷回弹,分析了不同深度土体的卸荷回弹特征,分别得到了卸荷比与回弹率、卸荷比与回弹模量的关系曲线,并由此得出了西安黄土的临界卸荷比和极限卸荷比,间接确定了回弹变形的最大影响深度和强回弹区范围,为计算黄土基坑底回弹变形量提供了理论依据.最后,综合西安某黄土基坑的现场实测数据及理论计算结果,证明了本文研究结论的可行性
Abstract:
Large area rebound deformation due to excavation of loess foundation pit was modeled through conventional consolidation-rebound test in this paper, and deformation characteristics of soil in different depth were studied. The critical unloading ratio and ultimate unloading ratio were derived according to the unloading ratio-rebound ratio and unloading ratio-resilience modulus relationship, and the maximum depth of unloading influence area and strong rebound area could be estimated using these two ratios, which would provide theoretical basis for determining the rebound displacement of loess foundation pit. Finally, based on the former research, the maximum rebound depth, strong rebound area and total rebound displacement of a foundation pit in Xi′an was calculated, which were similar to the in-situ test results. This verified that the method given in this paper was feasible.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-08-20 修改稿日期:2012-11-20
基金项目:安徽省高校优秀青年人才基金项目(2012SQRL195)
作者简介:崔广芹(1985-),女,山东菏泽人,博士,主要从事岩土工程领域的研究工作
更新日期/Last Update: 2015-09-01