【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。更多还原

【Abstract】 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.更多还原