摘要
传统的钢支撑轴力多是基于基坑围护结构的强度控制而确定。针对软土深基坑中钢支撑伺服系统轴力如何确定的问题,提出了基于围护刚度控制的轴力确定方法,即引入“双控法”的概念以确定支撐轴力,不仅保证了经济可行性,而且在控制围护侧向变形方面效果显著,为今后类似基坑的围护优化设计提供了参考。
The traditional axial force of steel support is mostly determined by strength control of foundation pit support structure.Aiming at the problem of how to determine the axial force of steel support servo system in deep foundation pit of soft soil,an axial force determination method is proposed based on support stiffness control,that is,the concept of "double control method" is introduced to determine the supporting axial force,which not only ensures the economic feasibility,but also achieves significant effect in controlling the lateral deformation of foundation pit support,which can provide a reference for the optimization design of similar foundation pit support in the future.
作者
曹虹
孙九春
CAO Hong;SUN Jiuchun(Tengda Construction Group Co., Ltd., Shanghai 200122, China)
出处
《建筑施工》
2019年第5期754-758,共5页
Building Construction
关键词
基坑施工
钢支撑
伺服系统
双控法
轴力
foundation pit construction
steel support
servo system
double control method
axial force
