中央电视台新台址建设CCTV中央大楼基坑支护及降水设计、施工重点

Retaining and Protecting for foundation pit,Design of Dewatering in Foundation Pit,and Construction Emphasis of CCTV Central Buildings

随着经济建设及城市建筑的发展,近年来我国的各类建筑与市政工程得到了飞速发展,随之而来的深基坑工程越来越多、越来越复杂,对基坑支护、降水的要求亦越来越高。本文以中央电视台新台址建设CCTV中央大楼基坑工程为例,介绍了对基坑标高复杂、地下水情况复杂的深大基坑的支护、降水设计及施工重点,详细分析了支护、降水特点,简要阐明了设计参数要点及施工重点、难点。此工程的设计、施工经验可广泛应用于众多深基坑工程中,对广大设计、施工人员亦有一定的借签意义。

Taking the foundation pit of CCTV Central Buildings as an example,this paper introduces the retaining and protecting,design dewatering,construction emphasis and difficult of the deep and big foundation pit with complex elevation and underground water,and analyzes in detail the characteristics of the retaining and protecting,dewatering in foundation pit.This engineering design and construction experience may be applied widely into the deep foundation pit construction,and are referenced significant to many design and construction personnel.