A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rapid construction method of prefabricated segmental beam
The invention discloses a rapid construction method of a prefabricated segmental beam, and aims to solve the technical problems of a prefabricated segmental assembled bracket system with the height of8m or unbalanced load and a bracket body supporting technology in the construction of a ramp bridge with a smaller radius. The rapid construction method of the prefabricated segmental beam comprisesthe following steps that after a foundation is treated, performing measurement and positioning; arranging a disc buckle support; laying main ridges and secondary ridges, and placing jacks; carrying out a preloading test on the stent system; performing primary settlement observation on the prefabricated segmental beams before and after suspension splicing; after settlement stabilization, performingpermanent prestress strand pulling, tensioning and pressure drop of the top plate are conducted according to design; completing permanent prestress construction of the roof; after tensioning of the prestressed steel strands is completed and grouting is conducted for 48 hours, detaching the support; and completing. The construction method is large in bearing capacity, reasonable in layout, safe and reliable; assembling and disassembling are convenient, the turnover capacity is high, and work efficiency is high; the steel consumption is reduced, and the cost is reduced.
本发明公开了一种预制节段梁的快速施工方法，旨在解决高度8m内或存在不均衡荷的预制节段拼装支架体系、半径较小的匝道桥的施工中的架体支撑技术存在的技术问题。本发明预制节段梁的快速施工方法包括以下步骤：地基处理后，测量定位；搭设盘扣支架；铺设主楞、次楞、放置千斤顶；对支架体系进行预压试验；预制节段梁在悬拼前后进行一次沉降观测；沉降稳定后根据设计进行顶板永久预应力穿束、张拉、压降；完成顶板永久预应力施工；在预应力钢绞线张拉完成后并灌浆48小时后拆除支架；即成。本发明的施工方法承载力大，布局合理、安全可靠；搭拆方便，周转能力强，工作效率高；节约用钢量，缩短成本。
Rapid construction method of prefabricated segmental beam
The invention discloses a rapid construction method of a prefabricated segmental beam, and aims to solve the technical problems of a prefabricated segmental assembled bracket system with the height of8m or unbalanced load and a bracket body supporting technology in the construction of a ramp bridge with a smaller radius. The rapid construction method of the prefabricated segmental beam comprisesthe following steps that after a foundation is treated, performing measurement and positioning; arranging a disc buckle support; laying main ridges and secondary ridges, and placing jacks; carrying out a preloading test on the stent system; performing primary settlement observation on the prefabricated segmental beams before and after suspension splicing; after settlement stabilization, performingpermanent prestress strand pulling, tensioning and pressure drop of the top plate are conducted according to design; completing permanent prestress construction of the roof; after tensioning of the prestressed steel strands is completed and grouting is conducted for 48 hours, detaching the support; and completing. The construction method is large in bearing capacity, reasonable in layout, safe and reliable; assembling and disassembling are convenient, the turnover capacity is high, and work efficiency is high; the steel consumption is reduced, and the cost is reduced.
本发明公开了一种预制节段梁的快速施工方法，旨在解决高度8m内或存在不均衡荷的预制节段拼装支架体系、半径较小的匝道桥的施工中的架体支撑技术存在的技术问题。本发明预制节段梁的快速施工方法包括以下步骤：地基处理后，测量定位；搭设盘扣支架；铺设主楞、次楞、放置千斤顶；对支架体系进行预压试验；预制节段梁在悬拼前后进行一次沉降观测；沉降稳定后根据设计进行顶板永久预应力穿束、张拉、压降；完成顶板永久预应力施工；在预应力钢绞线张拉完成后并灌浆48小时后拆除支架；即成。本发明的施工方法承载力大，布局合理、安全可靠；搭拆方便，周转能力强，工作效率高；节约用钢量，缩短成本。
Rapid construction method of prefabricated segmental beam
预制节段梁的快速施工方法
WANG ZENG'EN (author) / XIE JIYI (author) / ZHANG BANG (author) / WANG QIANQIAN (author) / ZHENG XINMING (author) / LIU SHUZHI (author) / HUANG SHILONG (author) / WANG XI (author) / GONG MINGXIA (author) / XING LE (author)
2020-08-18
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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