在变形控制的设计思想指导下,对支护结构体系进行优化设计,需要综合考虑各个方面的影响因素,从而保证工程的安全、经济、可靠。本文结合实际工程,分析了一些主要因素的改变对支护结构体系内力和位移的影响,以期对基坑工程的设计施工能有一定的参考价值 Under the guidance of the design concept of deformation control, the optimization design of the supporting structure system requires comprehensive consideration of the influencing factors in various aspects, so as to ensure the safety, economy, and reliability of the project. In this paper, the impact of the changes of some major factors on the internal forces and displacements of the supporting structure system is analyzed based on the actual project, so as to have a certain reference value for the design and construction of the foundation pit project.