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A platform for research: civil engineering, architecture and urbanism
Bridge prestress tensioning construction method
The invention provides a bridge prestress tensioning construction method, and belongs to the technical field of road and bridge construction. The method comprises the following steps: firstly, integrally tensioning a steel strand bundle, and stopping tensioning the whole steel strand bundle when the pre-tightening force is slightly smaller than a target pre-tightening force; after the whole tensioning is completed, tensioning the steel strands one by one, so that the pre-tightening forces of all the steel strands are consistent; and finally, tensioning the whole bundle of steel strands integrally again to the target pre-tightening force. The method has the advantages that the stress condition of the steel strand can be optimized, and the bearing capacity of a component is improved.
本发明提供了一种桥梁预应力张拉施工方法，属于路桥施工技术领域。包括如下步骤：先对钢绞线束进行整体张拉，在略小于目标预紧力时停止对整束钢绞线的张拉；完成整体张拉后，对各钢绞线进行逐一张拉，使全部的钢绞线预紧力一致；最后再次对整束钢绞线进行整体张拉至目标预紧力。本发明具有能够优化钢绞线的受力情况、提高构件的承载能力等优点。
Bridge prestress tensioning construction method
The invention provides a bridge prestress tensioning construction method, and belongs to the technical field of road and bridge construction. The method comprises the following steps: firstly, integrally tensioning a steel strand bundle, and stopping tensioning the whole steel strand bundle when the pre-tightening force is slightly smaller than a target pre-tightening force; after the whole tensioning is completed, tensioning the steel strands one by one, so that the pre-tightening forces of all the steel strands are consistent; and finally, tensioning the whole bundle of steel strands integrally again to the target pre-tightening force. The method has the advantages that the stress condition of the steel strand can be optimized, and the bearing capacity of a component is improved.
本发明提供了一种桥梁预应力张拉施工方法，属于路桥施工技术领域。包括如下步骤：先对钢绞线束进行整体张拉，在略小于目标预紧力时停止对整束钢绞线的张拉；完成整体张拉后，对各钢绞线进行逐一张拉，使全部的钢绞线预紧力一致；最后再次对整束钢绞线进行整体张拉至目标预紧力。本发明具有能够优化钢绞线的受力情况、提高构件的承载能力等优点。
Bridge prestress tensioning construction method
一种桥梁预应力张拉施工方法
DU SUYUN (author) / MA BAOYING (author) / JIANG JUNMEI (author) / GAN JINGYAN (author) / ZHOU JIAN (author) / NA LIYAN (author)
2021-09-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Post-tensioning prestress construction method for bridge box girder
| European Patent Office | 2023