Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for first beam and second pier of V-shaped pier rigid frame bridge
The invention relates to the technical field of bridge construction, in particular to a first-beam and second-pier construction method for a V-shaped pier rigid frame bridge, which comprises the following steps: S1, preparing before V-shaped pier construction; s2, erecting a temporary buttress and a bracket for pouring and supporting the V-shaped pier; s3, erecting a box girder bracket; s4, laying a template for pouring the V-shaped pier and the box girder; s5, a post-cast strip is arranged in the middle of the V-shaped pier, and the whole part, except for the post-cast strip, of the V-shaped pier is cast twice in a bottom-to-top mode; s6, after the V-shaped pier is poured twice, chiseling is conducted on the top of the V-shaped pier, and whole-width continuous pouring is conducted on a box girder on the top of the V-shaped pier through concrete; s7, after pouring of the box girder is completed, prestress tensioning is conducted on the box girder; and S8, the box girder prestress tensioning is finished, and concrete pouring is conducted on the post-cast strip of the V-shaped pier. According to the construction method, the post-cast strip is arranged in the middle of the V-shaped pier, the risk that the pier-beam joint cracks during box beam prestress tensioning can be eliminated, and the occurrence rate of engineering diseases is effectively reduced.
本发明涉及桥梁施工技术领域，尤其涉及一种V型墩刚构桥先梁后墩施工方法，包括以下步骤：S1，进行V型墩施工前准备；S2，搭设V型墩浇筑支撑用的临时支墩和支架；S3，搭设箱梁支架；S4，铺设浇筑V型墩和箱梁的模板；S5，在V型墩的中部设置后浇带，并对V型墩除后浇带以外的部分整体采用先下再上的方式分两次进行浇筑；S6，在V型墩完成两次浇筑后，对V型墩顶部凿毛，并对V型墩顶部的箱梁采用混凝土整幅连续浇筑；S7，箱梁浇筑完成后，对箱梁进行预应力张拉；S8，箱梁预应力张拉结束，对V型墩的后浇带进行混凝土浇筑。该施工方法使在V型墩中部设置后浇带处，可消除在箱梁预应力张拉时墩梁结合处开裂的风险，有效降低工程病害的发生率。
Construction method for first beam and second pier of V-shaped pier rigid frame bridge
The invention relates to the technical field of bridge construction, in particular to a first-beam and second-pier construction method for a V-shaped pier rigid frame bridge, which comprises the following steps: S1, preparing before V-shaped pier construction; s2, erecting a temporary buttress and a bracket for pouring and supporting the V-shaped pier; s3, erecting a box girder bracket; s4, laying a template for pouring the V-shaped pier and the box girder; s5, a post-cast strip is arranged in the middle of the V-shaped pier, and the whole part, except for the post-cast strip, of the V-shaped pier is cast twice in a bottom-to-top mode; s6, after the V-shaped pier is poured twice, chiseling is conducted on the top of the V-shaped pier, and whole-width continuous pouring is conducted on a box girder on the top of the V-shaped pier through concrete; s7, after pouring of the box girder is completed, prestress tensioning is conducted on the box girder; and S8, the box girder prestress tensioning is finished, and concrete pouring is conducted on the post-cast strip of the V-shaped pier. According to the construction method, the post-cast strip is arranged in the middle of the V-shaped pier, the risk that the pier-beam joint cracks during box beam prestress tensioning can be eliminated, and the occurrence rate of engineering diseases is effectively reduced.
本发明涉及桥梁施工技术领域，尤其涉及一种V型墩刚构桥先梁后墩施工方法，包括以下步骤：S1，进行V型墩施工前准备；S2，搭设V型墩浇筑支撑用的临时支墩和支架；S3，搭设箱梁支架；S4，铺设浇筑V型墩和箱梁的模板；S5，在V型墩的中部设置后浇带，并对V型墩除后浇带以外的部分整体采用先下再上的方式分两次进行浇筑；S6，在V型墩完成两次浇筑后，对V型墩顶部凿毛，并对V型墩顶部的箱梁采用混凝土整幅连续浇筑；S7，箱梁浇筑完成后，对箱梁进行预应力张拉；S8，箱梁预应力张拉结束，对V型墩的后浇带进行混凝土浇筑。该施工方法使在V型墩中部设置后浇带处，可消除在箱梁预应力张拉时墩梁结合处开裂的风险，有效降低工程病害的发生率。
Construction method for first beam and second pier of V-shaped pier rigid frame bridge
一种V型墩刚构桥先梁后墩施工方法
LU XIAOFENG (Autor:in) / ZHANG YIFEI (Autor:in) / ZHENG JUNYU (Autor:in) / WEI JUN (Autor:in) / WANG PANXUE (Autor:in) / XIE YANGYANG (Autor:in) / WANG JIE (Autor:in) / XU YUHUA (Autor:in) / WANG HAIXIA (Autor:in) / LU GUANGHENG (Autor:in)
23.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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