Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for synchronously jacking whole bridge to replace support
The invention provides a construction method for synchronously jacking the whole bridge to replace a support, and belongs to the field of municipal construction. The construction method comprises thefollowing steps that S1, preparation work is carried out before jacking; S2, jacking preparation is carried out; S3, trial jacking is carried out; S4, a main beam is jacked synchronously; and S5, thesupport is replaced. Temporary supporting is conducted so that the old support is withdrawn, a leveling steel plate is additionally arranged, and the beam is fallen down; after the leveling steel plate and the new support are installed, beam falling and reset operation can be conducted, all jacks are subjected to oil returning and beam falling synchronously, the beam body needs to be kept overallbalanced in the beam falling process, and synchronous overall beam falling is conducted according to the jacking inverse process and in a graded mode till the beam body is completely fallen. Accordingto the construction method, on the premise that the bridge structure is not damaged and the stress condition of the bridge structure is not changed, the limitation that the engineering beam is largein tonnage, small in space and the like is effectively solved by adopting a multi-point whole jacking mode, the support is replaced well, and the bridge operation condition is good.
本发明提供了桥梁整体同步顶升更换支座施工方法，属于市政施工领域，包括以下步骤，S1、顶升前准备工作，S2、顶升准备；S3、试顶升；S4、主梁同步顶升和S5、支座更换；临时支撑、撤出旧支座，然后增设调平钢板，落梁，当调平钢板及新支座安装完成后，即可进行落梁复位作业，各千斤顶同步回油、落梁，落梁过程要保持梁体整体平衡，同步整体落梁按照顶升逆过程进行，分级进行，直到梁体落实为止。本发明具有在不破坏桥梁结构、不改变桥梁结构受力条件，通过采取多点整顶的方式，有效解决了该工程梁吨位大、空间小等限制，支座更换好桥梁运营情况良好。
Construction method for synchronously jacking whole bridge to replace support
The invention provides a construction method for synchronously jacking the whole bridge to replace a support, and belongs to the field of municipal construction. The construction method comprises thefollowing steps that S1, preparation work is carried out before jacking; S2, jacking preparation is carried out; S3, trial jacking is carried out; S4, a main beam is jacked synchronously; and S5, thesupport is replaced. Temporary supporting is conducted so that the old support is withdrawn, a leveling steel plate is additionally arranged, and the beam is fallen down; after the leveling steel plate and the new support are installed, beam falling and reset operation can be conducted, all jacks are subjected to oil returning and beam falling synchronously, the beam body needs to be kept overallbalanced in the beam falling process, and synchronous overall beam falling is conducted according to the jacking inverse process and in a graded mode till the beam body is completely fallen. Accordingto the construction method, on the premise that the bridge structure is not damaged and the stress condition of the bridge structure is not changed, the limitation that the engineering beam is largein tonnage, small in space and the like is effectively solved by adopting a multi-point whole jacking mode, the support is replaced well, and the bridge operation condition is good.
本发明提供了桥梁整体同步顶升更换支座施工方法，属于市政施工领域，包括以下步骤，S1、顶升前准备工作，S2、顶升准备；S3、试顶升；S4、主梁同步顶升和S5、支座更换；临时支撑、撤出旧支座，然后增设调平钢板，落梁，当调平钢板及新支座安装完成后，即可进行落梁复位作业，各千斤顶同步回油、落梁，落梁过程要保持梁体整体平衡，同步整体落梁按照顶升逆过程进行，分级进行，直到梁体落实为止。本发明具有在不破坏桥梁结构、不改变桥梁结构受力条件，通过采取多点整顶的方式，有效解决了该工程梁吨位大、空间小等限制，支座更换好桥梁运营情况良好。
Construction method for synchronously jacking whole bridge to replace support
桥梁整体同步顶升更换支座施工方法
YANG TAO (Autor:in) / LI ZHENSHOU (Autor:in) / LI GUANG (Autor:in) / NIE JINLONG (Autor:in)
29.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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