大跨度网架施工过程不同温度分布效应分析  

ANALYSIS OF DIFFERENT TEMPER ATURE DISTRIBUTION EFFECTS DURING CONSTRUCTION OF LARGE-SPAN GRID

作　　者：何忠义 邹宇 李伟燕 HE Zhong-yi;ZOU Yu;LI Wei-yan(Faculty of Civil Engineering and Mechanics,Kuming University of Science and Technology.650500,Kumming.China)

机构地区：[1]昆明理工大学建筑工程学院,昆明650500

出　　处：《建筑技术》2025年第2期195-197,共3页Architecture Technology

基　　金：云南省重点研发计划项目(202203AC100004、202003AC100001)。

摘　　要：为探究不同温度分布在网架施工过程中的温度效应,以丽江三义机场T3航站楼屋盖网架结构为工程实例,结合丽江的气象数据进行流场分析,将得出的4种不同温度分布数据施加到结构的有限元模型中进行温度效应计算,结果表明:温度按施工区块分布时波动系数最大为0.74,且4种温度分布的波动系数都不低于0.27;TS1区在杆件分布施工时变形值最大,而TS2区在施工区块分布施工时变形值最大:不同温度分布下合龙边界竖向变形最大相对误差为41.26%。In order to explore the temperature effect of different temperature distributions in the construction process of the grid,the roof grid structure of T3 terminal of Lijiang Sanyi Airport was taken as an engineering example,combined with the meteorological data of Lijiang for flow field analysis,and the obtained four different temperature distribution data were applied to the finite element model of the structure for temperature effect calculation.The results show that the maximum fluctuation coefficient is 0.74 when the temperature is distributed according to the construction block,and the fluctuation coefficient of the four temperature distributions is not less than 0.27,the deformation value of TS1 area is the largest when the members are distributed during construction,while the deformation value of TS2 area is the largest when the construction block is distributed,and the maximum relative error of the vertical deformation of the closed boundary is 41.26%under different temperature distributions.

关 键 词：网架结构 温度分布 温度效应 温度场 

分 类 号：TU745.2[建筑科学—建筑技术科学] TU356