地铁无柱车站中板大开孔受力数值分析  

Numerical Analysis of Large Openings in the Middle Plate of Subway Columnless Station

作　　者：王佳庆[1] WANG Jiaqing(China Railway Eryuan Engineering Group Co.,Ltd.Chengdu 610031,China)

机构地区：[1]中国中铁二院工程集团有限责任公司,成都610031

出　　处：《广东土木与建筑》2022年第7期73-77,共5页Guangdong Architecture Civil Engineering

摘　　要：为了使地铁无柱车站中板大开孔的结构布置更经济合理。本文以地铁无柱车站在公共区设置楼扶梯的中板大开孔为背景,采用三维有限元模型对无柱车站中板开孔受力进行数值分析。对不同孔边梁结构布置、中板腋角布置、中板厚度、开孔位置与中板跨高比等进行分析,总结中板和孔边梁挠度、内力的变化规律。对关键结构构件的设计提出合理化建议;提出优化中板大开孔结构布置的方法;结合主轴力分布特征,提出一种“桁架式”孔边结构布置形式。In order to make the structural layout of the large opening in the middle plate of the subway columnless station more economical and reasonable.Taking the large opening of the middle plate of the escalator in the public area of the subway columnless station as the background,this paper uses the three-dimensional finite element model to numerically analyze the force on the opening of the middle plate of the columnless station.The structural layout of side beams with different holes,the layout of haunch angle of middle plate,the thickness of middle plate,the position of opening and the ratio of span to height are analyzed,and the variation laws of deflection and internal force of middle plate and side beams with holes are summarized.Put forward reasonable suggestions for the design of key structural members;The method of optimizing the layout of large opening structure of medium plate is put forward;Combined with the distribution characteristics of spindle force,a“truss”hole edge structure layout is proposed.

关 键 词：地铁无柱车站 中板大开孔 跨高比 中板腋角 “桁架式”孔边结构布置 数值分析 

分 类 号：TU941[建筑科学—建筑技术科学]