均匀扭转体建筑结构的整体性能分析  

Analysis of the Overall Performance of the Uniformly-Twisted Building Structure

作　　者：夏开峰 李启才[1] XIA Kaifeng;LI Qicai(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215000,China)

机构地区：[1]苏州科技大学土木工程学院,苏州215000

出　　处：《结构工程师》2021年第6期18-25,共8页Structural Engineers

基　　金：江苏省中外合作办学平台联合科研项目。

摘　　要：建立6层扭转体结构模型和非扭转体结构模型进行对比,分析扭转体结构和非扭转体结构自振周期、振型和层间位移角的差别,同时用理论公式阐明扭转引起的框架柱内力变化,考察刚性楼板假设和弹性楼板假设所带来的结构内力影响。研究结果表明:扭转体结构受竖向荷载影响较大;扭转使柱倾斜,对柱内力有较大影响,并产生整体扭矩;弹性楼板假定更能反映扭转体结构实际受力情况。A 6-story twisted frame structure model and a non-twisted structure model for comparison were created.The differences of natural vibration period,mode shape and inter-story displacement angle between the two models were analysied.The changes in structural column internal force caused by twisting are clarified by theoretical formula.The structural internal force caused by rigid floor assumption and elastic floor assumption is investigated.The results show that the twisted structure is greatly affected by the vertical load,the inclined column caused by twisting has a great impact on the internal force of the column and produces an overall torque,and the elastic floor slab assumption can better reflect the actual stress state of the twisted structure.

关 键 词：扭转体结构 竖向荷载 楼板假定 

分 类 号：TU31[建筑科学—结构工程]