车辆基地全框支剪力墙结构大底盘效应分析  

Analysis on large chassis effect of complete frame-supported shear wall structure on vehicle base

作　　者：许名鑫 李重阳 周越洲 肖中岭 陈晓城 XU Mingxin;LI Chongyang;ZHOU Yuezhou;XIAO Zhongling;CHEN Xiaocheng(Architectural Design&Research Institute of SCUT Co.,Ltd.,Guangzhou 510641,China;Yuexiu Property Co.,Ltd.,Guangzhou 510280,China)

机构地区：[1]华南理工大学建筑设计研究院有限公司,广州510641 [2]越秀地产股份有限公司,广州510280

出　　处：《建筑结构》2024年第15期69-74,114,共7页Building Structure

基　　金：华南理工大学建筑设计研究院有限公司委托研究项目(x2jzD9230390)。

摘　　要：以某车辆基地全框支剪力墙结构为例,以底盘结构质量、刚度、频率、平面尺寸、裙房柱截面、塔楼高度等为参数,分析大底盘结构对塔楼地震响应的影响及多塔楼之间的影响、塔楼偏置对底盘的影响等。结果表明,底盘效应放大了塔楼受到的地震作用。楼高150m时,塔楼层剪力曲线形状变得弯曲,反映高阶振型带拐点的曲线形状;楼高50m时随裙房范围扩大,底盘效应明显增强,裙房范围每侧60m,裙房上一层的剪力比楼高150m时该层的剪力还要大50%左右,是楼高50m无裙房时该层剪力的2.5倍左右。在车辆基地全框支剪力墙结构设计中需考虑大底盘效应,按实际的底盘范围进行整体计算以真实反映底盘效应。Based on a particular complete frame-supported shear wall structure of a vehicle base,the effect of large chassis on tower seismic response was analyzed by using parameters such as structure mass,stiffness,frequency,plane size of the chassis,columns′section of the podium building,and height of the tower.As well as the effect between multiple towers,and the effect of tower offset on chassis were analyzed also.The result shows that chassis effect magnifies the seismic action on the tower.The shearing force curve of tower floors bends when the height of tower reaches 150m,reflecting the curve shape of high-order modes with inflection points.When the height of tower reaches 50m,effect of chassis significantly enhances as the range of podium building extends.When the range of podium building is 60m on each side,the shear force on upper floor is about 50%greater than that of the floor at a height of 150m,and is about 2.5 times that of the floor without podium building at a height of 50m.Large chassis effect should be considered in the design of complete frame-supported shear wall structure of a vehicle base.Overall calculations based on the actual size of chassis are required to determine the effect of large chassis.

关 键 词：车辆基地 全框支剪力墙结构 大底盘 底盘效应 多塔结构 扭转效应 

分 类 号：TU973[建筑科学—结构工程]