地下综合管廊结构标准段的抗震分析

Seismic analysis of standard section of underground utility tunnel structure

地下综合管廊作为城市的重要基础设施,不仅可以实现各类市政公用管线的集约化建设与管理,还避免因管线事故频发开挖路面所造成的"拉链路"现象[1,2]。反应位移法是基于一维土层的地震反应分析,结构的计算变形与实测变形较为吻合,可以较为清晰反映土体—结构间的相互作用。基于反应位移法,利用有限元计算软件Robot Structural Analysis对综合管廊进行抗震计算分析,并对比在考虑抗震作用和不考虑抗震作用下的内力、配筋等结果,为地下综合管廊结构是否需要进行抗震分析提供了重要依据。

As an important infrastructure of the city,the underground utility tunnel can not only realize the intensive construction and management of various municipal public pipelines,but also avoid the phenomenon of"pull link"caused by frequent road excavation due to pipeline accidents[1,2]. The reaction displacement method is based on the seismic response analysis of the one-dimensional soil layer. The calculated deformation of the structure is in good agreement with the measured deformation,which can clearly reflect the soil-structure interaction. Based on the reaction displacement method,this paper uses the finite element calculation software Robot Structural Analysis to analyze the seismic calculation of the utility tunnel,and compares the results of the internal forces and reinforcements under the consideration of earthquake resistance and without considering the earthquake resistance. The need for seismic analysis provides an important basis.