砂质地层中板式内支撑对深基坑变形影响研究

随着城市地下空间的开发，如何控制深基坑变形对周边环境的影响成了深基坑设计和施工的关键技术。对于基坑变形控制能力较强的板式支护体系，其支护内支撑的设置是基坑工程设计和施工，以及影响基坑变形的关键因素。以上海临港新城主城WSW-C2-10地块限界房产项目深基坑工程为例，通过基坑监测数据分析并结合有限元数值模拟软件分析，揭示了砂质地层中内支撑对深基坑变形的影响规律。

Study on Influence of Internal Bracing Setup with Plate-type on Deformation of Deep Foundation Pit in Sandy Stratum

With the development of urban underground space, how to control the influence of deep foundation pit construction on surrounding environment has become the key technology for deep excavation design and construction. The plate support system has the advantages of strong ability controlling deformation of foundation pit. For this system, the setting of internal bracing is the key factor designing and building, and affecting the deformation of foundation pit. Taking the deep excavation of real estate project in the land parcel WSW-C2-10 of the main block of Shanghai Lingang New Town as an example, the analysis of monitoring data with finite element numerical simulation was carried out to disclose the rule how the internal bracing affects the deformation of deep foundation pit in sandy stratum.