摘要
某高架车站站房工程的屋盖结构长412 m,宽252 m,最大跨度64 m,属于超长的大跨度超限建筑;同时,下部结构存在扭转不规则、局部夹层楼板不连续、局部框架柱上下不连续等不规则项。主要阐述屋盖部分的性能化分析论证过程及其相关结果。设计时,采用SAP 2000对屋盖进行了行波效应分析以及中、大震作用下的屋盖钢结构性能化分析等相关计算论证。经分析,屋盖的主要超限项(超长)对屋盖的影响较小。通过时程分析揭露了钢屋盖部分的薄弱部位,经采取加强措施后,关键构件能满足中震弹性、大震不屈服,一般构件能满足中震不屈服性能要求。通过性能化分析,站房工程的屋盖部分满足设定的C级性能目标。
The roof structure of an elevated station project is 412 meters long,252 meters wide,and the maximum span is 64 meters,belonging to a super-long large-span overrun building.At the same time,there are some irregularities in the substructure,such as torsional irregularity,discontinuous local sandwich slab,and discontinuous local frame columns.This paper mainly expounds the performance analysis and demonstration process of the roof part and its related results.During the design,SAP 2000 was used to carry out the traveling wave effect analysis of the roof and the performance analysis of the roof steel structure under medium and large earthquakes.The analysis shows that the main overrun items(super-length)of the roof have little effect on the roof.The weak parts of the steel roof are revealed through time history analysis.After strengthening measures are taken,the key components can meet the requirements of medium earthquake elasticity and large earthquake non-yield,and the general components can meet the requirements of medium earthquake non-yield performance.Through performance analysis,the roof part of the station project meets the set C-level performance target.
作者
陆德龙
孙文波
LU Delong;SUN Wenbo(Architectural Design&Research Institute of SCUT Co.,Ltd.Guangzhou 510641,China;School of Civil Engineering&Transportation,South China University of Technology Guangzhou 510641,China)
出处
《广东土木与建筑》
2021年第4期5-9,42,共6页
Guangdong Architecture Civil Engineering
关键词
超长屋盖
性能化分析
行波效应
大跨度超限
时程分析
super-long roof
performance analysis
traveling wave effect
large-span overrun
time history analysis
