Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cast-in-place box girder construction method of unsymmetrical pressure bent cap upper bracket method
The invention discloses a cast-in-place box girder construction method for an unsymmetrical capping beam upper bracket method. The method comprises the following steps that S1, a single-side bracket is constructed on the main bridge side of a capping beam; s2, a T-beam is installed on the bridge approach side of the bent cap, the T-beam is directly placed on a support arranged above the bent cap, after the support is installed, the position and the elevation of the support are rechecked, whether installation of the support is qualified or not is checked, and the T-beam is installed after the installation of the support is qualified; s3, a bracket is installed on the main bridge side of the bent cap, and a bracket is installed at the bracket position; s4, pre-pressing the bracket; s5, after a cast-in-place box beam installation formwork and a top plate support system are erected, concrete pouring is conducted, and after a T beam is installed, a section of post-cast strip is arranged in the construction space occupying original prestressed tendons; s6, pre-stress construction is conducted, specifically, after concrete pouring and curing reach the designed age, pre-stress construction is conducted; s7, post-cast strip construction; and S8, the support system is dismantled. The T-beam is installed firstly, and the situation that after an additional balance weight is arranged on the approach bridge side, a bent beam is bent and stressed for a long time, and safety management is unfavorable is avoided.
本发明公开了一种偏压盖梁上托架法现浇箱梁施工方法，包括以下步骤：S1、盖梁主桥侧施工单侧牛腿；S2、盖梁引桥侧安装T梁，T梁直接安放于盖梁上方设置的支座上，支座安装完成后，对支座的位置、标高进行复核、检查支座安装是否合格，支座安装合格后安装T梁；S3、盖梁主桥侧安装托架，牛腿位置安装托架；S4、托架预压；S5、现浇箱梁安装模板及支设顶板支架体系、砼浇筑，T梁安装后，占用原预应力筋的施工空间设置一段后浇带；S6、预应力施工，待混凝土浇筑且养护达到设计的龄期后，进行预应力施工；S7、后浇带施工；S8、支架体系拆除。先安装T梁，避免了引桥侧额外配重后，盖梁长期处于压弯受力下，对安全管理不利。
Cast-in-place box girder construction method of unsymmetrical pressure bent cap upper bracket method
The invention discloses a cast-in-place box girder construction method for an unsymmetrical capping beam upper bracket method. The method comprises the following steps that S1, a single-side bracket is constructed on the main bridge side of a capping beam; s2, a T-beam is installed on the bridge approach side of the bent cap, the T-beam is directly placed on a support arranged above the bent cap, after the support is installed, the position and the elevation of the support are rechecked, whether installation of the support is qualified or not is checked, and the T-beam is installed after the installation of the support is qualified; s3, a bracket is installed on the main bridge side of the bent cap, and a bracket is installed at the bracket position; s4, pre-pressing the bracket; s5, after a cast-in-place box beam installation formwork and a top plate support system are erected, concrete pouring is conducted, and after a T beam is installed, a section of post-cast strip is arranged in the construction space occupying original prestressed tendons; s6, pre-stress construction is conducted, specifically, after concrete pouring and curing reach the designed age, pre-stress construction is conducted; s7, post-cast strip construction; and S8, the support system is dismantled. The T-beam is installed firstly, and the situation that after an additional balance weight is arranged on the approach bridge side, a bent beam is bent and stressed for a long time, and safety management is unfavorable is avoided.
本发明公开了一种偏压盖梁上托架法现浇箱梁施工方法，包括以下步骤：S1、盖梁主桥侧施工单侧牛腿；S2、盖梁引桥侧安装T梁，T梁直接安放于盖梁上方设置的支座上，支座安装完成后，对支座的位置、标高进行复核、检查支座安装是否合格，支座安装合格后安装T梁；S3、盖梁主桥侧安装托架，牛腿位置安装托架；S4、托架预压；S5、现浇箱梁安装模板及支设顶板支架体系、砼浇筑，T梁安装后，占用原预应力筋的施工空间设置一段后浇带；S6、预应力施工，待混凝土浇筑且养护达到设计的龄期后，进行预应力施工；S7、后浇带施工；S8、支架体系拆除。先安装T梁，避免了引桥侧额外配重后，盖梁长期处于压弯受力下，对安全管理不利。
Cast-in-place box girder construction method of unsymmetrical pressure bent cap upper bracket method
一种偏压盖梁上托架法现浇箱梁施工方法
LIANG SHUAI (Autor:in) / RONG PENGFEI (Autor:in) / DU PENG (Autor:in) / ZHANG LI (Autor:in) / GUO RUI (Autor:in)
22.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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