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A platform for research: civil engineering, architecture and urbanism
Large-span steel structure cantilever construction method
The invention discloses a large-span steel structure cantilever construction method, which comprises the following steps of: 1, mounting steel columns at two ends, and tying and welding a steel beam; 2, sequentially installing the large-span steel beams, and conducting cantilever construction till the stress of the cantilever steel beams is too large; 3, installing temporary pulling frames above the steel columns, and pulling steel strands by the temporary pulling frames on the two sides; 4, when the steel beam is constructed through an overhanging method and the stress and displacement exceed a certain range, adopting a pulling frame construction method, installing a lower section of steel beam, and enabling the steel beam and the upper steel strand to be tied to the pulling frames through pulling cables; and 5, using a pulling frame construction method in sequence, installing the lower section of steel beam till the steel beam is closed, and through finite element analysis, obtaining the judgement that in the inhaul cable section-by-section installation process, the front inhaul cable can be dismantled. The construction method of the large-span steel structure cantilever is used for in-situ installation and projects with high supporting frame body height and too high supporting cost, the construction time can be greatly saved, and the construction cost can be greatly reduced.
本发明公开了一种大跨度钢结构悬臂施工方法，包括：第一步：先将两端钢柱安装完毕，钢梁拉结焊接完毕；然后进行第二步：依次安装大跨度钢梁，悬挑施工，直至悬挑钢梁应力过大；进一步地，第三步：在钢柱上方安装临时拉架，两侧的临时拉架拉结钢绞线；第四步：当悬挑法施工钢梁时，应力和位移超出一定范围；用拉架施工法，安装下段钢梁，该钢梁通过拉索与上方钢绞线拉结至拉架上；第五步：依次用拉架施工法，安装下段钢梁，直至合拢，可以通过有限元分析得出，拉索逐段安装过程中，可以拆除前道拉索。使得该大跨度钢结构悬臂施工的方法，用于原位安装且支撑架体高度高，支撑费用太高的工程，可大大节约施工时间降低施工费用。
Large-span steel structure cantilever construction method
The invention discloses a large-span steel structure cantilever construction method, which comprises the following steps of: 1, mounting steel columns at two ends, and tying and welding a steel beam; 2, sequentially installing the large-span steel beams, and conducting cantilever construction till the stress of the cantilever steel beams is too large; 3, installing temporary pulling frames above the steel columns, and pulling steel strands by the temporary pulling frames on the two sides; 4, when the steel beam is constructed through an overhanging method and the stress and displacement exceed a certain range, adopting a pulling frame construction method, installing a lower section of steel beam, and enabling the steel beam and the upper steel strand to be tied to the pulling frames through pulling cables; and 5, using a pulling frame construction method in sequence, installing the lower section of steel beam till the steel beam is closed, and through finite element analysis, obtaining the judgement that in the inhaul cable section-by-section installation process, the front inhaul cable can be dismantled. The construction method of the large-span steel structure cantilever is used for in-situ installation and projects with high supporting frame body height and too high supporting cost, the construction time can be greatly saved, and the construction cost can be greatly reduced.
本发明公开了一种大跨度钢结构悬臂施工方法，包括：第一步：先将两端钢柱安装完毕，钢梁拉结焊接完毕；然后进行第二步：依次安装大跨度钢梁，悬挑施工，直至悬挑钢梁应力过大；进一步地，第三步：在钢柱上方安装临时拉架，两侧的临时拉架拉结钢绞线；第四步：当悬挑法施工钢梁时，应力和位移超出一定范围；用拉架施工法，安装下段钢梁，该钢梁通过拉索与上方钢绞线拉结至拉架上；第五步：依次用拉架施工法，安装下段钢梁，直至合拢，可以通过有限元分析得出，拉索逐段安装过程中，可以拆除前道拉索。使得该大跨度钢结构悬臂施工的方法，用于原位安装且支撑架体高度高，支撑费用太高的工程，可大大节约施工时间降低施工费用。
Large-span steel structure cantilever construction method
一种大跨度钢结构悬臂施工方法
WANG CE (author) / LIU HAILONG (author) / AN KAI (author) / HU HONGZHI (author) / CHEN YONGJUN (author) / DONG YAPENG (author) / ZHAO LONGPO (author) / ZHANG YUXIN (author) / MENG QIULI (author) / WANG XIANGHUA (author)
2021-11-16
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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