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目前,地下空间深基坑施工日趋增多,基础的埋深逐渐加大,采用外置塔式起重机,其覆盖半径难以满足施工要求,若增加塔式起重机的数量,工程成本大大提高;如果采用传统钢筋混凝土塔基设置在结构底板基础以下,使安装塔式起重机工作在土方开挖后才能进行,这样会影响施工进度;随着深度的加大,土质与地下水等不利
At present, the construction of deep foundation pit in underground space is increasing day by day, and the foundation depth is gradually increasing. With the external tower crane, the coverage radius can not meet the construction requirements. If the number of tower cranes is increased, the construction cost will be greatly increased. If traditional Reinforced concrete foundation is set below the foundation of the structural foundation so that the installation of the tower crane can only be carried out after earthwork excavation, which will affect the construction progress; as the depth increases, the soil and groundwater will be adversely affected