A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of fabricated bridge swivel without supporting legs and sandboxes
The invention provides a construction method of a fabricated bridge swivel without supporting legs and sandboxes. The construction method comprises the following steps of prefabricating a structure needed by the device in a factory; pouring the lower turntable and the upper turntable by using concrete; welding temporary locking profile steel between the steel bars extending out of the top of the lower rotary disc and the outer-layer steel mold; pouring a pier column on the top of the upper turntable and constructing an upper beam body; starting to rotate the beam body, and cutting off the temporary locking profile steel when the beam body starts to rotate; and after rotation is in place, the temporary locking profile steel needs to be welded again, exposed steel bars preset in the lower rotating disc and the upper rotating disc are welded, then grouting is conducted in a gap between the outer-layer steel mold and the inner-layer steel mold, post-pouring concrete is poured, and bridge rotation construction is completed. By the adoption of the construction method, the structural system is simple to convert, and only rotary locking, rotary unlocking and overall consolidation are adopted. The vertical load is always supported by the spherical hinge and the slide way, and the stress form is clear. And unstable multi-point support with continuously changing support points is changed into surface support with stable safety insurance, so that the stability is good during rotation.
本发明提供了一种无撑脚及沙箱的装配式桥梁转体的施工方法，包括以下步骤：工厂预制本装置所需结构；使用混凝土浇筑下转盘和上转盘；在下转盘顶部伸出的钢筋和外层钢模之间焊接临时锁定型钢；在上转盘顶部浇筑墩柱并施工上部梁体；开始转动梁体，转动开始时，需切断临时锁定型钢；转动到位后，需再次焊接临时锁定型钢，并将下转盘和上转盘中预设的外露钢筋焊接，然后在外层钢模和内层钢模之间的间隙中注浆，并浇筑后浇混凝土，完成桥梁转体施工。采用本方案，结构体系转换简单，仅为转动锁定，转动解锁和整体固结。竖向荷载一直由球铰和滑道支撑，受力形式明确；改支撑点不断变化的不稳定多点支撑为带有稳定安全保险的面支撑，转体期间稳定性好。
Construction method of fabricated bridge swivel without supporting legs and sandboxes
The invention provides a construction method of a fabricated bridge swivel without supporting legs and sandboxes. The construction method comprises the following steps of prefabricating a structure needed by the device in a factory; pouring the lower turntable and the upper turntable by using concrete; welding temporary locking profile steel between the steel bars extending out of the top of the lower rotary disc and the outer-layer steel mold; pouring a pier column on the top of the upper turntable and constructing an upper beam body; starting to rotate the beam body, and cutting off the temporary locking profile steel when the beam body starts to rotate; and after rotation is in place, the temporary locking profile steel needs to be welded again, exposed steel bars preset in the lower rotating disc and the upper rotating disc are welded, then grouting is conducted in a gap between the outer-layer steel mold and the inner-layer steel mold, post-pouring concrete is poured, and bridge rotation construction is completed. By the adoption of the construction method, the structural system is simple to convert, and only rotary locking, rotary unlocking and overall consolidation are adopted. The vertical load is always supported by the spherical hinge and the slide way, and the stress form is clear. And unstable multi-point support with continuously changing support points is changed into surface support with stable safety insurance, so that the stability is good during rotation.
本发明提供了一种无撑脚及沙箱的装配式桥梁转体的施工方法，包括以下步骤：工厂预制本装置所需结构；使用混凝土浇筑下转盘和上转盘；在下转盘顶部伸出的钢筋和外层钢模之间焊接临时锁定型钢；在上转盘顶部浇筑墩柱并施工上部梁体；开始转动梁体，转动开始时，需切断临时锁定型钢；转动到位后，需再次焊接临时锁定型钢，并将下转盘和上转盘中预设的外露钢筋焊接，然后在外层钢模和内层钢模之间的间隙中注浆，并浇筑后浇混凝土，完成桥梁转体施工。采用本方案，结构体系转换简单，仅为转动锁定，转动解锁和整体固结。竖向荷载一直由球铰和滑道支撑，受力形式明确；改支撑点不断变化的不稳定多点支撑为带有稳定安全保险的面支撑，转体期间稳定性好。
Construction method of fabricated bridge swivel without supporting legs and sandboxes
一种无撑脚及沙箱的装配式桥梁转体的施工方法
ZENG ZHONG (author) / SONG SONGKE (author) / SHI HENGJUN (author) / RONG SHUAI (author) / QUAN XINRUI (author) / LIU WEI (author) / ZHANG XIANMU (author) / SHAO LIN (author) / PENG YOUSONG (author)
2021-06-25
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Swivel bridge swivel construction monitoring system and construction method
| European Patent Office | 2023