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城市深基坑周边环境日益复杂,深基坑开挖受到更为严格的环境限制,必须使深基坑开挖引起周边建构筑物的变形控制在规范要求及周边建(构)筑物允许范围内。基坑的设计不仅是对围护强度进行控制,还要求与周边环境相结合对变形进行控制。针对复杂的周边环境,应采取合适的围护形式控制对基坑周边老建筑的影响。
The surrounding environment of deep foundation pit in an urban area is more and more complicated, and the excavation of deep foundation pit is more restricted by the environment. It is necessary to control the deformation of the surrounding building due to the excavation of the deep foundation pit within the permissible range of the code and surrounding structures . The design of the foundation pit not only controls the strength of the enclosure, but also requires the combination with the surrounding environment to control the deformation. For the complex surrounding environment, appropriate enclosure form should be used to control the impact on the old buildings around the foundation pit.