福州海峡国际会展中心温度应力研究

Research on temperature stress of Fuzhou strait international conference and exhibition center

为了分析温度变化对大型空间结构的影响,根据实测的福州气象资料,采用有限元分析软件ABAQUS分别计算了福州海峡国际会展中心在夏季、冬季温度作用下支撑钢屋盖的混凝土柱、管桁架的不利响应,以及钢屋盖整体变形响应。计算结果表明,会展中心在温差20℃作用下,支撑钢屋盖的混凝土柱所受压应力与重力工况下的混凝土柱所受压应力相比,提高了约21%;温度应力除了对个别构件的应力影响较大,一般影响大约在10%左右;温度应力对结构的变形影响较小,大约在4%左右。本文的分析结果对大跨空间结构的温度应力分析提供了有益的借鉴。

In order to analyze the influence of temperature change on large - span space structures, based on the meteorological data of Fuzhou, using the finite element analysis software ABAQUS 6.10, the steel roof deformation response and adverse stress response of the steel pipe truss and concrete column supporting the steel roof under summer and winter temperature of Fuzhou Strait International Confer- ence and Exhibition Center were calculated respectively. Calculation results show that, under temperature difference of 20℃, compression stress of concrete column supporting the steel roof improved 21% compared to the compression stress under gravity condition; general influ- ence of temperature stress on compression stress of frame member is about 10% , except some individual influence is about 21% ; the influ- ence of temperature stress on the distortion of long - span space structure is about 4%.