摘要
以某码头客运综合枢纽项目为例,对大跨度钢屋盖网架结构多级同步提升技术展开研究。该项目的屋面采用大跨度焊接球网架结构,具有截面呈曲线变化且不完全对称,主体结构层次复杂且分布零散,屋盖结构中心与边缘间的距离较大的特征,重点介绍项目施工区块划分、网架提升点布置及吊点形式、楼面分区拼装、多级同步提升等关键技术,并对网架提升过程进行有限元仿真分析。实践表明,该施工技术可大幅减少高空作业,提高网架安装精度,有效缩短工期,降低施工成本,确保网架施工安全与质量。
Taking a terminal passenger transport complex project as an example,the multi-stage synchronous lifting technology of large-span steel roof grid structure was studied.The roof of the project adopted a large-span welded ball grid structure,which had the characteristics of curved cross-section and incomplete symmetry,complex and scattered main structure layers,and large distance between the center and the edge of the roof structure.This re⁃search mainly introduced the key technologies of project construction block division,grid lifting point layout and lift⁃ing point form,floor partition assembly,multi-level synchronous lifting,and finite element simulation analysis of grid lifting process.The results showed that the construction technology could greatly reduce the high-altitude opera⁃tion,improve the installation accuracy of the grid,effectively shorten the construction period,reduce the construc⁃tion cost,and ensure the safety and quality of the grid construction.
作者
张文静
马迪
ZHANGWenjing;MA Di(School of Civil Engineering,Xi'an Traffic Engineering Institute,Xi’an 710300,China)
出处
《粘接》
CAS
2024年第8期161-164,共4页
Adhesion
基金
西安交通工程学院中青年基金项目(项目编号:2023KY-41)。
关键词
大跨度
焊接球网架结构
分区拼装
同步提升
仿真分析
large span
welded ball grid structure
partition assembly
synchronous lifting
simulation analysis
