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对对拉围护结构的受力机理及影响因素进行梳理,并根据不同工况进行大量的数值计算试验,主要得到以下结论:当两基坑距离小于基坑深度时,可适当降低围护结构刚度或配筋,以节约工程造价;当两基坑深度存在高差时,可将深基坑侧围护结构刚度加大,浅基坑侧围护结构刚度减小;两基坑中间核心土加固可有效减小基坑变形及围护结构受力,降低施工风险。
The mechanism and influencing factors of tensioning and surrounding structures are analyzed and a large number of numerical experiments are carried out according to different working conditions. The main conclusions are as follows: When the distance between two foundation pits is less than the depth of foundation pit, the envelope structure Stiffness or reinforcement in order to save construction cost; when there is difference in depth of two foundation pits, the rigidity of the retaining structure on the side of deep foundation pit can be increased and the rigidity of the retaining structure on the side of the shallow foundation pit can be reduced; Reinforcement can effectively reduce the deformation of the foundation pit and the force of the envelope, reducing the construction risk.