点支式玻璃幕墙预应力索桁架的优化设计  

Optimization Design of Prestressed Cable Truss for a Point-supported Glass Curtain Wall

作　　者：崔浩 谢龙发 夏军杰 Cui Hao;Xie Longfa;Xia Junjie(College of Civil Engineering and Architecture,Jiangxi Science and Technology Normal University,Nanchang,Jiangxi 330013)

机构地区：[1]江西科技师范大学建筑工程学院,江西南昌330013

出　　处：《江西建材》2022年第9期146-148,共3页Jiangxi Building Materials

基　　金：江西省教育厅科技项目(GJJ201128);大学生创新训练计划项目(202111318010)。

摘　　要：对于强度和刚度较大的锚定结构,为了降低工程造价,以索桁架总体积为目标函数,以拉索横截面面积及预应变为优化变量进行优化设计。对于强度和刚度较低的锚定结构,为了锚定结构及主体结构的安全可靠,以索桁架支座反力绝对值之和为目标函数进行优化设计,以拉索横截面面积、支撑杆长度、支座间距和预应变为优化变量进行优化设计。两个算例表明,经过优化设计可以明显减小拉索横截面面积和结构支座反力。For the anchored structure with large strength and stiffness, to reduce the project cost, the total volume of cable truss structure is taken as the objective function, and the cross-sectional area and pre-strain of cable are taken as independent variables for optimal design.For the anchored structure with low strength and stiffness, to ensure the safety and reliability of the anchored structure and the main structure,the sum of the absolute value of the support reaction of the cable truss structure is taken as the objective function. And the cross-sectional area of the cable, the spacing between two hinged immovable supports, the length of the support rod and the pre-strain of the cable are taken as the design variables for optimal design. Two examples show that the optimized design can significantly reduce the cross-sectional area of the cable and the reaction force of the structural support.

关 键 词：索桁架 优化设计 最小结构体积 最小结构反力 

分 类 号：TU394[建筑科学—结构工程]