1、摘要 近年来随着经济的发展，社会的进步，城市化进程的加快，高层建筑和市政工程 大量涌现。高层建筑的建造、大型市政设施的施工及大量地下空间的开发，必然会有 大量的深基坑工程产生。建筑物高度越高，其埋置深度也越深，相应的对基坑工程的 要求也就越高。深基坑支护结构的设计、施工、监测等是近年来经常遇到的技术难题。 深基坑支护不仅要求确保边坡的稳定，而且要满足变形控制要求，保证基坑内正常作 业安全，而且要防止基坑及坑外土体移动，保证基坑附近建筑物、道路、管线的正常 运行。为了满足如今建筑物的支护，基坑工程也在朝更大、更深的要求迈进。本设计 主要是对某科技楼工程基坑支护结构进行设计，首先要确保周围建筑物、
2、道路、管线 等的正常安全使用，同时要求围护结构的稳定性好，沉降位移小。设计主要采用的支 护方式是钻孔灌注桩和土钉墙两种，同时，钻孔灌注桩采用的内支撑形成支护体系。 基坑降水主要在基坑周围设置降水井，采用集水明排法降水方案。设计最后针对支护 和降水方案，对基坑施工工艺及基坑监测进行了大致说明。 关键词关键词：深基坑；钻孔灌注桩；土钉墙；降水；施工；监测 Abstract In recent years, with economic development , social progress , urbanization , and high-rise buildings and public w
3、orks in large numbers . Construction , construction of large municipal facilities to develop high-rise buildings and a large underground space , there must be a lot of deep excavation produced . The higher the building height , the depth of its buried deeper , corresponding to the requirements of th
4、e higher excavation . Deep excavation structural design, construction , monitoring and other technical problems are often encountered in recent years . Deep excavation requires not only ensure the stability of the slope, but also to meet the requirements of distortion control , to ensure the normal
5、operation of the pit safety , but also to prevent the soil pit and pit outside move to ensure pit near buildings, roads, pipelines normal operation. In order to meet today shoring, excavation of the building is also moving in a larger , deeper demands forward. This design is a science and technology
6、 building project excavation structure design, first make sure that the surrounding buildings , roads, pipelines and other normally safe to use , while retaining structure requires good stability , a small settlement displacement . Supporting manner designed primarily uses two bored and soil nail wall , while using the support form Bored supporting system . The main setting precipitation pit dewatering wells around the pit , using the method of precipitation scheme catchment next row . Finally,
