复合与叠合式地下车站结构设计要点比较分析

地铁明挖地下车站通常采用复合式及叠合式结构体系,这两种结构的围护在整个结构受力体系中的作用、荷载作用模式、设计处理方法、防水及施工措施上都不尽相同。该文主要从以上几个方面对这两种结构体系的不同点进行了比较,并结合工程实例,对比分析了边界条件相同情况下,采用复合式结构及叠合式结构的各自结构构件设计尺寸、构件体积含钢量,最终得出在工程许可的情况下,采用叠合式结构,经济上优于复合式结构。

Comparison and Analysis of Structural Design Gist for Composite and Superposed Underground Station

The composite and superposed structural systems are commonly used in the excavation of the subway underground station. The action, loading mode, design treatment method, water resistance and construction measures of these two structural enclosing protections in the stress system of the whole structure are different. The article compares the differences of these two structural systems from the above aspects, and as an example of the engineering case, compares and analyzes the design dimensions, volumes and steel contents of each structural member of the composite and superposed structures under the same boundary conditions, and finally gives the conclusion that the superposed structure is economically better than the composite structure under the condition of the engineering permission.