首页|期刊简介|投稿指南|分类索引|刊文选读|订阅指南|资料|样刊邮寄查询|常见问题解答|联系我们
张晋梅,张震,仇荔斐. 基于修正Mohr Coulomb模型考虑非饱和效应的基坑开挖[J]. 科学技术与工程, 2020, 20(24): 10003-10010.
zhangjinmei,zhangzhen,qiulifei.Law and Stability of Transient Saturated Zone of Slope in Abandoned dreg site under Rainfall Conditions[J].Science Technology and Engineering,2020,20(24):10003-10010.
基于修正Mohr Coulomb模型考虑非饱和效应的基坑开挖
Law and Stability of Transient Saturated Zone of Slope in Abandoned dreg site under Rainfall Conditions
投稿时间:2019-09-02  修订日期:2020-04-11
DOI:
中文关键词:  北斗GNSS  参数反演  非饱和效应  基坑开挖
英文关键词:Beidou GNSS  parameter inversion  unsaturated effect  foundation pit excavation
基金项目:071港珠澳大桥人工岛监测与智能评估(300102219209)、国家自然科学基金(211021170283)
        
作者单位
张晋梅 国网冀北电力有限公司 经济技术研究院
张震 长安大学
仇荔斐 长安大学
摘要点击次数: 138
全文下载次数: 75
中文摘要:
      建筑施工的第一步便是开挖基坑,影响基坑及周边建筑稳定性的因素众多,而针对基坑的研究往往忽略了降水渗流的影响以及由此带来的非饱和效应。基于北斗GNSS监测参数反演,在考虑非饱和效应的基础上,以湖南常德某基坑开挖项目为背景对施工全过程进行了仿真模拟。并对内支撑轴力、渗流以及非饱和效应、坑外土应力分布进行了分析研究。研究表明:①基坑开挖阶段对坑外土体的扰动相对支护施工阶段更大;②非饱和效应对基坑稳定性的影响较小且主要体现在对其坑外土体沉降的影响;③矩形基坑四个角位置的内支撑会出现拉应力集中。
英文摘要:
      The first step in building construction is to excavate the foundation pit,there are many factors affecting the stability of the foundation pit and surrounding buildings,the study of foundation pits often ignores the effects of precipitation seepage and the non-saturation effects. Inversion of monitoring parameters based on Beidou GNSS,considering the effect of non-saturation,based on a foundation pit excavation project in Changde, Hunan Province, the whole process of construction was simulated. And, the internal support axial force, seepage and non-saturation effects, and the stress distribution outside the pit are analyzed and studied. The results show that①The disturbance of the soil outside the pit during the foundation pit excavation stage is relatively larger than that of the supporting construction stage;②The effect of unsaturated effect on the stability of foundation pit is small and is mainly reflected in the influence of soil settlement on the pit outside it;③Tensile stress concentration occurs at the inner support of the four corners of the rectangular foundation pit.
查看全文  查看/发表评论  下载PDF阅读器
关闭
你是第33212015位访问者
版权所有:科学技术与工程编辑部
主管:中国科学技术协会    主办:中国技术经济学会
Tel:(010)62118920 E-mail:stae@vip.163.com
京ICP备05035734号-4
技术支持:本系统由北京勤云科技发展有限公司设计

京公网安备 11010802029091号