A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for lowering existing railway pier bearing platform
The invention discloses a construction method for lowering an existing railway pier bearing platform. The construction method comprises the following steps that S1, a newly-added pile foundation is constructed within an existing pile foundation range; constructing a newly-built bearing platform; s2, a pre-pouring part of the lengthened pier body is constructed; a supporting system is constructed on the newly-built bearing platform; s3, jacking force of jacking equipment is synchronously applied according to design requirements until the supporting system tightly jacks the existing bearing platform; s4, the connection between the existing pile foundation and the existing bearing platform is cut off, then the jacking force of the jacking equipment is synchronously applied, and the stress of the supporting system is relieved; s5, the supporting system and the existing pile body above the top face of the newly-built bearing platform are dismantled, and the redundant part of the existing bearing platform is cut off; and S6, steel bars are planted on the cut-off faces of the redundant parts of the existing pier body and the existing bearing platform, and the outer wrapping post-pouring part of the lengthened pier body is constructed. The existing bearing platform, the existing pile foundation, the lowered newly-built bearing platform, the newly-added pile foundation and the lengthened pier body are used for carrying out two-time stress system conversion, construction of a temporary gate-type pier is replaced, and the engineering amount and the engineering construction difficulty are reduced.
本发明公开了一种降低既有铁路桥墩承台的施工方法，包括以下步骤：S1，在既有桩基范围内施工新增桩基；施工新建承台；S2，施工接长墩身的先浇部分；在新建承台上施工支撑系统；S3，按设计要求同步施加顶升设备顶力至支撑系统顶紧既有承台；S4，切断既有桩基与既有承台之间的连接，然后同步施加顶升设备顶力，解除支撑系统的受力；S5，拆除支撑系统及新建承台顶面以上既有桩身，切除既有承台的多余部分；S6，在既有墩身和既有承台多余部分的切除面上植筋，施工接长墩身的外包后浇部分。本发明用既有承台、既有桩基和降低后的新建承台新增桩基、接长墩身进行两次受力体系转换，代替临时门式墩的修建，减少工程量和工程施工难度。
Construction method for lowering existing railway pier bearing platform
The invention discloses a construction method for lowering an existing railway pier bearing platform. The construction method comprises the following steps that S1, a newly-added pile foundation is constructed within an existing pile foundation range; constructing a newly-built bearing platform; s2, a pre-pouring part of the lengthened pier body is constructed; a supporting system is constructed on the newly-built bearing platform; s3, jacking force of jacking equipment is synchronously applied according to design requirements until the supporting system tightly jacks the existing bearing platform; s4, the connection between the existing pile foundation and the existing bearing platform is cut off, then the jacking force of the jacking equipment is synchronously applied, and the stress of the supporting system is relieved; s5, the supporting system and the existing pile body above the top face of the newly-built bearing platform are dismantled, and the redundant part of the existing bearing platform is cut off; and S6, steel bars are planted on the cut-off faces of the redundant parts of the existing pier body and the existing bearing platform, and the outer wrapping post-pouring part of the lengthened pier body is constructed. The existing bearing platform, the existing pile foundation, the lowered newly-built bearing platform, the newly-added pile foundation and the lengthened pier body are used for carrying out two-time stress system conversion, construction of a temporary gate-type pier is replaced, and the engineering amount and the engineering construction difficulty are reduced.
本发明公开了一种降低既有铁路桥墩承台的施工方法，包括以下步骤：S1，在既有桩基范围内施工新增桩基；施工新建承台；S2，施工接长墩身的先浇部分；在新建承台上施工支撑系统；S3，按设计要求同步施加顶升设备顶力至支撑系统顶紧既有承台；S4，切断既有桩基与既有承台之间的连接，然后同步施加顶升设备顶力，解除支撑系统的受力；S5，拆除支撑系统及新建承台顶面以上既有桩身，切除既有承台的多余部分；S6，在既有墩身和既有承台多余部分的切除面上植筋，施工接长墩身的外包后浇部分。本发明用既有承台、既有桩基和降低后的新建承台新增桩基、接长墩身进行两次受力体系转换，代替临时门式墩的修建，减少工程量和工程施工难度。
Construction method for lowering existing railway pier bearing platform
一种降低既有铁路桥墩承台的施工方法
CHEN HONGCHUN (author) / LI MINGQING (author) / WANG XIAOBING (author) / GUO JIANXUN (author) / LIU FAMING (author) / ZOU YONGFENG (author) / DENG ZHOUQUAN (author) / XIE HUA (author) / HU YUZHU (author) / XU JIANHUA (author)
2024-01-09
Patent
Electronic Resource
Chinese
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