大跨度预应力网架监测施工技术  

Monitoring Construction Technology of Large-span Prestressed Space Truss

作　　者：罗浩 刘创 周飞 蔡天宇 熊勋昌 LUO Hao;LIU Chuang;ZHOU Fei;CAI Tianyu;XIONG Xunchang(China Construction Eighth Engineering Bureau Zhejiang Construction Engineering Co.,Ltd.,Hangzhou,Zhejiang 311200,China)

机构地区：[1]中建八局浙江建设工程有限公司,浙江杭州311200

出　　处：《施工技术（中英文）》2022年第14期83-86,共4页Construction Technology

摘　　要：普通钢结构焊接球网架跨度可达100m左右,若需进一步增加网架跨度,可在网架中使用预应力技术。因增加了预应力,网架可能出现多种截面和复杂节点,给网架拼装、焊接、提升、卸载等工作带来新的难度。结合某项目预应力网架施工实例,介绍了大跨度预应力网架在施工过程中监测的重点事项及方法,总结了大跨度预应力网架监测施工技术。The span of welded spherical grid of ordinary steel structure can reach about 100 m.If it is necessary to further increase the span of grid,prestress technology can be used in grid.Due to the increase of prestress,the grid may have a variety of sections and complex joints,which brings new difficulties to the grid assembly,welding,lifting,unloading and other work.Combined with the construction example of a prestressed space truss project,the key items and methods of monitoring during the construction of large-span prestressed space truss are introduced,and the monitoring construction technology of large-span prestressed space truss is summarized.

关 键 词：钢结构 网架结构 预应力 监测 拼装 提升 

分 类 号：TU391[建筑科学—结构工程]