长条形地铁车站开挖时周边地表沉降规律及控制措施

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英文篇名：DISCIPLINARIAN AND THE CONTROING-MEASUREMENT FOR THE SURFACE SETTLEMENT IN THE EXCAVATION OF LONG-STRIP METRO PIT IN SHANGHAI 中文刊名：建筑技术开发 英文刊名：Building Technique Development 作者：蒋万军 ; 张庆贺 ; 张文才 英文作者：Jiang Wan-jun Zhang Qing-he Zhang Wen-cai 中文关键词：长条形 ; 地铁车站基坑 ; 地表沉降 ; Plaxis 有限元分析 英文关键词：Long-strip ; Metro pit ; Ground settlement ; FEM analyse by Plaxis 出版日期：2007-07-20 机构：上海同济大学地下建筑与工程系;上海同济建设监理咨询有限公司; 年：2007 期：07 出版单位：建筑技术开发

摘要

上海地铁车站基坑通常宽约20m,长度250～300m,为典型的长条形基坑。基坑开挖时,土体原来的应力平衡状态受到破坏,导致基坑周围地表产生不均匀沉降,直接威胁到基坑周边建筑物的安全。以上海地铁9号线桂林路车站长条形基坑开挖施工为依托,对基坑周围地表的沉降机理及规律进行了分析研究,提出了相应的解决措施,并成功地应用于工程实践。
The metro pit in Shanghai,with the breadth of about 20 metres and the length of 250 to 300 metres,attributes to the model long-strip pit.During the excavation of the deep-metro pit,the condition of stress-balance for the soil was destroied,result to the unequality settlement of the surface soil around the deep-excavation,which is very threaten for the safety of the building around the metro pit.Based on the excavation of GuiLin Road Station,the Metro Line 9 in Shanghai,this paper analysis and study the mechanism and disciplinarian of the ground settlement,put forword some correlative measurements,which are proved to be corrected by the practice.

引文

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