A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of bridge box girders, in particular to a post-tensioning pre-stress construction method for a bridge box girder, and solves the problem that in the prior art, a girder body of the bridge box girder is prone to early cracks under the condition that the internal and external temperature difference is large. The post-tensioning pre-stress construction method for the bridge box girder comprises the steps of bottom formwork cleaning, construction lofting, side formwork assembling, bottom and web steel bar binding, pre-stress pipeline mounting, inner formwork mounting, top plate steel bar binding, girder body concrete pouring, girder body maintenance, tensioning, mud jacking, girder moving, girder end anchor sealing and plug concrete. According to the post-tensioning method prestress construction method for the bridge box girder, bottom formwork cleaning, construction lofting, side formwork splicing, end formwork splicing and the like are conducted on the box girder, and then comprehensive post-tensioning method prestress detection and effective construction can be conducted on a bridge.
本发明涉及桥梁箱梁技术领域，尤其涉及一种用于桥梁箱梁的后张法预应力施工方法，解决了现有技术中桥梁箱梁在内外温差较大的情况下梁体易出现早期裂纹的问题的问题。一种用于桥梁箱梁的后张法预应力施工方法，包括清理底模、施工放样、侧模、端头模板拼装、绑扎底、腹板钢筋、安装预应力管道、安装内模、绑扎顶板钢筋、浇筑梁体混凝土、梁体养生、张拉、压浆、移梁、梁端封锚、堵头混凝土。本发明一种用于桥梁箱梁的后张法预应力施工方法对箱梁进行清理底模、施工放样、侧模、端头模板拼装等，进而可以对桥梁进行全方位的后张法预应力检测以及有效的施工。
The invention relates to the technical field of bridge box girders, in particular to a post-tensioning pre-stress construction method for a bridge box girder, and solves the problem that in the prior art, a girder body of the bridge box girder is prone to early cracks under the condition that the internal and external temperature difference is large. The post-tensioning pre-stress construction method for the bridge box girder comprises the steps of bottom formwork cleaning, construction lofting, side formwork assembling, bottom and web steel bar binding, pre-stress pipeline mounting, inner formwork mounting, top plate steel bar binding, girder body concrete pouring, girder body maintenance, tensioning, mud jacking, girder moving, girder end anchor sealing and plug concrete. According to the post-tensioning method prestress construction method for the bridge box girder, bottom formwork cleaning, construction lofting, side formwork splicing, end formwork splicing and the like are conducted on the box girder, and then comprehensive post-tensioning method prestress detection and effective construction can be conducted on a bridge.
本发明涉及桥梁箱梁技术领域，尤其涉及一种用于桥梁箱梁的后张法预应力施工方法，解决了现有技术中桥梁箱梁在内外温差较大的情况下梁体易出现早期裂纹的问题的问题。一种用于桥梁箱梁的后张法预应力施工方法，包括清理底模、施工放样、侧模、端头模板拼装、绑扎底、腹板钢筋、安装预应力管道、安装内模、绑扎顶板钢筋、浇筑梁体混凝土、梁体养生、张拉、压浆、移梁、梁端封锚、堵头混凝土。本发明一种用于桥梁箱梁的后张法预应力施工方法对箱梁进行清理底模、施工放样、侧模、端头模板拼装等，进而可以对桥梁进行全方位的后张法预应力检测以及有效的施工。
Cast-in-place box girder prestress intelligent tensioning construction technology
| European Patent Office | 2023