Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Special-shaped steel truss girder structure at tower girder joint and construction method of special-shaped steel truss girder structure
The invention relates to a special-shaped steel truss girder structure at a tower girder joint and a construction method of the special-shaped steel truss girder structure. At present, when a main beam with an inverted trapezoidal section is fixedly connected with a tower beam, the problems of unreasonable stress, poor economical efficiency and the like exist at the joint of the tower beam. A steel truss girder in the structure comprises an inverted-trapezoidal-section section, a rectangular-section section and special-shaped transition sections, the rectangular-section section is located above a pier, and the special-shaped transition sections and the inverted-trapezoidal-section section are sequentially arranged on the two longitudinal sides of the rectangular-section section from near to far; the top of the rectangular section section is as wide as the top of the inverted trapezoidal section section in the transverse direction, the transverse width of the bottom of the rectangular section section is larger than that of the bottom of the inverted trapezoidal section section, and the rectangular section section is connected to the inverted trapezoidal section section through a horizontal inclined rod of the special-shaped transition section. The special-shaped structural design that the inverted trapezoidal section with the wide upper portion and the narrow lower portion is combined with the rectangular section is adopted, the requirements of the highway-railway dual-purpose bridge for different sizes of the sections and the requirement of the steel truss girder for transmitting huge axial force at the bridge tower are met at the same time, and structural materials are more reasonable in use and stress.
本发明涉及一种塔梁连接处的异形钢桁梁构造及其施工方法。目前倒梯形截面主梁采用塔梁固结时，塔梁连接处存在受力不合理、经济性差等问题。本构造中的钢桁梁包括倒梯形断面段、矩形断面段以及异形过渡段，矩形断面段位于桥墩上方，矩形断面段的纵向两侧由近至远依次为异形过渡段和倒梯形断面段；矩形断面段的顶部与倒梯形断面段的顶部横向同宽，矩形断面段的底部横向宽度大于倒梯形断面段的底部横向宽度，矩形断面段通过异形过渡段的水平斜杆衔接到倒梯形断面段。本发明采用上宽下窄的倒梯形截面与矩形断面结合的异形结构设计，同时满足了公铁两用桥对断面不同尺寸的需求以及钢桁梁对桥塔处巨大轴力的传递需求，使得结构材料使用与受力更合理。
Special-shaped steel truss girder structure at tower girder joint and construction method of special-shaped steel truss girder structure
The invention relates to a special-shaped steel truss girder structure at a tower girder joint and a construction method of the special-shaped steel truss girder structure. At present, when a main beam with an inverted trapezoidal section is fixedly connected with a tower beam, the problems of unreasonable stress, poor economical efficiency and the like exist at the joint of the tower beam. A steel truss girder in the structure comprises an inverted-trapezoidal-section section, a rectangular-section section and special-shaped transition sections, the rectangular-section section is located above a pier, and the special-shaped transition sections and the inverted-trapezoidal-section section are sequentially arranged on the two longitudinal sides of the rectangular-section section from near to far; the top of the rectangular section section is as wide as the top of the inverted trapezoidal section section in the transverse direction, the transverse width of the bottom of the rectangular section section is larger than that of the bottom of the inverted trapezoidal section section, and the rectangular section section is connected to the inverted trapezoidal section section through a horizontal inclined rod of the special-shaped transition section. The special-shaped structural design that the inverted trapezoidal section with the wide upper portion and the narrow lower portion is combined with the rectangular section is adopted, the requirements of the highway-railway dual-purpose bridge for different sizes of the sections and the requirement of the steel truss girder for transmitting huge axial force at the bridge tower are met at the same time, and structural materials are more reasonable in use and stress.
本发明涉及一种塔梁连接处的异形钢桁梁构造及其施工方法。目前倒梯形截面主梁采用塔梁固结时，塔梁连接处存在受力不合理、经济性差等问题。本构造中的钢桁梁包括倒梯形断面段、矩形断面段以及异形过渡段，矩形断面段位于桥墩上方，矩形断面段的纵向两侧由近至远依次为异形过渡段和倒梯形断面段；矩形断面段的顶部与倒梯形断面段的顶部横向同宽，矩形断面段的底部横向宽度大于倒梯形断面段的底部横向宽度，矩形断面段通过异形过渡段的水平斜杆衔接到倒梯形断面段。本发明采用上宽下窄的倒梯形截面与矩形断面结合的异形结构设计，同时满足了公铁两用桥对断面不同尺寸的需求以及钢桁梁对桥塔处巨大轴力的传递需求，使得结构材料使用与受力更合理。
Special-shaped steel truss girder structure at tower girder joint and construction method of special-shaped steel truss girder structure
塔梁连接处的异形钢桁梁构造及其施工方法
FENG YACHENG (Autor:in) / KANG WEI (Autor:in) / ZHAO FEI (Autor:in) / ZHANG JINGLI (Autor:in) / ZHANG-WU PENGFEI (Autor:in) / FANG GUIFEN (Autor:in) / ZHANG XIAOKUN (Autor:in) / WEN BAOHUA (Autor:in) / TIAN YUEFENG (Autor:in) / JIANG HE (Autor:in)
10.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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