A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Arch foot steel-concrete combined section and construction method thereof
The invention discloses an arch foot steel-concrete combined section which is suitable for a steel box arch bridge. The arch foot steel-concrete combined section comprises a concrete bearing platform, a steel truss is fixedly installed above the concrete bearing platform, a concrete base is poured outside the steel truss, and the pressure bearing face of the concrete base abuts against the bottom face of the steel arch rib. The steel arch rib is connected with the steel truss through a first bolt and connected with the concrete bearing platform in a pulling mode through a prestress steel bar. The invention further discloses a construction method suitable for the arch foot steel-concrete combined section. The concrete base is only wrapped outside the steel truss, so that the arch foot steel-concrete combined section is of a non-embedded structure, and the technical problems of an embedded structure can be avoided. And by arranging the steel truss, the first bolts can be conveniently installed, positioning and supporting can be provided for the steel arch rib, and therefore the positioning accuracy of the structure can be enhanced, and the stability performance of the structure can be improved. And the bolts I and the prestressed steel bars are arranged, so that the steel arch ribs generate tensile stress at the concrete base, and the concrete base is always in a favorable pressed state.
本发明公开了一种拱脚钢混结合段，其适用于钢箱拱桥；拱脚钢混结合段包括砼承台，其上方固定安装有钢桁架，钢桁架外浇筑有砼底座，砼底座的承压面与钢拱肋的底面相抵；钢拱肋与钢桁架经螺栓一连接，且其与砼承台经预应力钢棒拉连。还公开了适用于该拱脚钢混结合段的施工方法。砼底座仅包覆在钢桁架外，从而使得拱脚钢混结合段成非埋入式构造，因此，可以避免埋入式构造所具有的技术问题。又通过设置钢桁架，能够方便安装螺栓一，还能对钢拱肋提供定位和支撑，从而能够增强结构的定位精准度并提升结构的稳定性能。且通过设置螺栓一和预应力钢棒，使得钢拱肋在砼底座处产生拉应力，从而使砼底座始终处于受压的有利状态。
Arch foot steel-concrete combined section and construction method thereof
The invention discloses an arch foot steel-concrete combined section which is suitable for a steel box arch bridge. The arch foot steel-concrete combined section comprises a concrete bearing platform, a steel truss is fixedly installed above the concrete bearing platform, a concrete base is poured outside the steel truss, and the pressure bearing face of the concrete base abuts against the bottom face of the steel arch rib. The steel arch rib is connected with the steel truss through a first bolt and connected with the concrete bearing platform in a pulling mode through a prestress steel bar. The invention further discloses a construction method suitable for the arch foot steel-concrete combined section. The concrete base is only wrapped outside the steel truss, so that the arch foot steel-concrete combined section is of a non-embedded structure, and the technical problems of an embedded structure can be avoided. And by arranging the steel truss, the first bolts can be conveniently installed, positioning and supporting can be provided for the steel arch rib, and therefore the positioning accuracy of the structure can be enhanced, and the stability performance of the structure can be improved. And the bolts I and the prestressed steel bars are arranged, so that the steel arch ribs generate tensile stress at the concrete base, and the concrete base is always in a favorable pressed state.
本发明公开了一种拱脚钢混结合段，其适用于钢箱拱桥；拱脚钢混结合段包括砼承台，其上方固定安装有钢桁架，钢桁架外浇筑有砼底座，砼底座的承压面与钢拱肋的底面相抵；钢拱肋与钢桁架经螺栓一连接，且其与砼承台经预应力钢棒拉连。还公开了适用于该拱脚钢混结合段的施工方法。砼底座仅包覆在钢桁架外，从而使得拱脚钢混结合段成非埋入式构造，因此，可以避免埋入式构造所具有的技术问题。又通过设置钢桁架，能够方便安装螺栓一，还能对钢拱肋提供定位和支撑，从而能够增强结构的定位精准度并提升结构的稳定性能。且通过设置螺栓一和预应力钢棒，使得钢拱肋在砼底座处产生拉应力，从而使砼底座始终处于受压的有利状态。
Arch foot steel-concrete combined section and construction method thereof
一种拱脚钢混结合段及其施工方法
ZHANG XIAOLONG (author) / HE JUNPING (author) / LI WENWU (author) / LI YULIN (author) / YANG QIAN (author) / TIAN TIAN (author) / ZUO YUN (author) / CHENG YING (author) / FENG BIN (author) / AO JIE (author)
2024-08-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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