摘要翻译求修改|基坑工程『支护|降水』 - 领先的岩土技术社区，岩土领域的媒体、社区与应用平台！

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只看楼主倒序阅读使用道具楼主发表于: 2012-06-09

摘要

根据《南京地铁三号线D3-XK01-0000-1005标岩土工程勘察报告》，该地铁车站长172.3m，基坑宽约24m，深约23m，同时参考当地的建筑经验和施工现场的具体情况，完成了该地铁车站深基坑围护的方案论证和设计。降水方案为井点管井降水，支护方案采用地下连续墙、钢筋混凝土内支撑联合支护。通过计算得出地下连续墙的入土深度与内部配筋、基坑内支撑的布置形式与配筋。基坑开挖方式为分步、分段、分层开挖。在开挖的同时对基坑进行监测，监测的内容包括墙体变形、墙身内力、支撑轴力。然后针对所设计出的基坑围护做出需要的绘图。得出结论：墙顶水平位移反映支护结构的顶部变形情况，是支护结构安全状况的重要指标，且在地铁建设这样安全性需求很高的情况下使用地下连续墙与内支撑的支护方式是最为有效的。

ABSTRACT

In the thesis, based on The Geotecnical Engineering Investigation Report Of The Nanjing Subway Line No.3 D3-XK01-0000-1005 standard, the length of station of Nanjing subway station is 172.3m, the width of the foundation pit is about 24m and the depth of the foundation pit is approxomately 23m. Simultaneously, refer to the local construction experience and special details of constraction site, that plan testify and design of deep foundation pit retaining of Nanjing subway line No.3 PuZhu Road station is completed. The design for precipitation is well point casing Wells precipitation, and the design of support is the construction of diaphragm wall combined with reinforced concrete strut.According to the calculation, we can get the depth and distributed steel of the internal reinforcement of the diaphragm wall, and the arrangement forms and distributed steel of the foundation pit support. The type of excavation adopts a way for the minute step,the partition,the lamination excavates. While excavating foundation pit, foundation pit monitoring is carrying on, including pile deformation, pile interal force, inner axial force. Then we draw the picture of what we designed for the foundation pit. So we come to a dicision: the horizontal displacement of the top reflects the deformation of the top of the supporting structure, it is an important index for the security situation of the supporting structure. And in a subway construction which needs a high security requirements , it is the most effective way to use the diaphragm wall combined with supporting construction.