大跨度张弦桁架结构滑移施工仿真分析  

SIMULATION AND ANALYSIS OF SLIDING CONSTRUCTION FOR LONG-SPAN TRUSS STRING STRUCTURE

作　　者：万馨 刘振杰 白尧尧 赵海旭 WAN Xin;LIU Zhenjie;BAI Yaoyao;ZHAO Haixu(School of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;Shanxi Electric Power Survey and Design Institute,Taiyuan 030000, China)

机构地区：[1]内蒙古科技大学土木工程学院,内蒙古包头014010 [2]山西省电力勘测设计院,太原030000

出　　处：《钢结构》2018年第6期93-98,共6页Steel Construction

摘　　要：结合新疆某会展中心B区展厅90 m跨度的张弦桁架屋盖结构的带柱累积滑移施工,采用MIDAS/Gen有限元分析软件,分析其在滑移过程中不同步现象以及考虑风荷载对结构的影响,并采用有限元软件ABAQUS对滑移轨道的应力和变形进行分析。结果表明:随着滑移结构榀数的增多,结构的整体刚度增大,所能承受的滑移不同步量却逐渐减小;滑移施工中,对滑移同步性的控制精度要随着结构榀数的增加而增加;在滑移过程中,风荷载对屋面结构的影响较小,滑移梁和轨道受力均处于弹性阶段,其变形量非常小,可以确保滑移施工的正常进行。Based on the B-hall of Xinjiang Exhibition Center Area with columns 90 m span truss string roof structure cumulative slip construction,the finite element analysis software MIDAS/Gen was used to analyze the slip out of sync phenomenon in the process of sliding,and consider the impact of wind load on the structure,and uses the finite element software ABAQUS to analyze the stress and deformation of the sliding rail. The results showed that： as the number of slip structures increased,the overall stiffness of the structure became larger,and the amount of slip that could be sustained was gradually reduced. In the slip construction,the control precision of the slip synchronization increased with the increase of the structure number. In the process of sliding,the influence of wind load on the whole roof structure was small; in the course of sliding,the sliding beam and the track were at the elastic stage,the deformation was very small,it could meet the requirements of normal sliding construction.

关 键 词：张弦桁架结构 滑移施工 同步性 风荷载 滑移轨道 

分 类 号：TU758.11[建筑科学—建筑技术科学]