摘要
以宜兴文化中心大跨度屋盖、铰接柱及箱形曲梁主体钢结构体系与预应力拉索玻璃幕墙张拉施工过程中的主次结构共同工作为背景,对复杂结构体系在预应力索张拉的全过程进行数值仿真分析。基于选取的张拉原则,对预应力索采用3阶段,21子步,共63步的张拉方案;采用有限元软件ABAQUS对全程进行模拟;重点阐述了关键部位的变形和应力水平。分析表明主体结构的最大Mises应力在该方案下平稳增长,最终预应力拉索应力水平能够达到目标值。
This paper investigated the interaction between primary structure and secondary structure during the tension process of curtain-wall cables. The primary structure consists of large span roof, columns with hinged ends and curved beams with rectangular cross section based on the prototype of Yixing Culture Center. Three stages tensioning scheme was proposed and every stage comprises 21 steps based on certain principle. Commercial software package ABAQUS with finite element method was employed to simulate the whole process of construction. Thereafter, deformation and stress level of key locations were obtained. The numerical analysis indicates the maximum Mises-stress increased smoothly after this tension scheme. Finally the stress level of cables was achieved.
出处
《施工技术》
CAS
北大核心
2013年第21期7-9,12,共4页
Construction Technology
基金
北京建工集团科研基金(JT-2012-009)
关键词
预应力
索
铰接柱
有限元分析
张拉
prestressing
cables
columns with hinged ends
finite element analysis
tension
