Three-arch bridge structure for resisting unbalanced horizontal thrust
A technology of balancing horizontal and arch bridges, applied in the direction of arch bridges, bridges, bridge parts, etc., can solve the problems of unbalanced horizontal thrust, potential safety hazards, and the influence of the stability of the arch, so as to avoid unbalanced deformation, maintain structural stability, and ensure The effect of structural stability
Pending Publication Date: 2020-11-03
ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD
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Problems solved by technology
[0003] When the existing continuous arch bridge is constructed on the arch ring and the arch structure, the arch foot of the arch ring will generate an unbalanced horizontal thrust on the abutment, and the unbalanced horizontal thrust will affect the stability of the abutment, and there are extreme big security risk
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[0025] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present application, and are not construed as limiting the present application.
[0026] Please combine Figure 1 to Figure 4 , the present application relates to a three-arch bridge structure against unbalanced horizontal thrust, which includes four abutments arranged in sequence along the preset extension path of the arch bridge and three arch rings 2 erected on the four abutments, each The arch ring 2 is erected between two adjacent abutments. When constructing a three-arch bridge structure, it is necessary to construct the middle arch ring first and then construct the arch rings on both sides. Unbalanced horizontal...
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The invention provides a three-arch-bridge structure for resisting unbalanced horizontal thrust, which comprises four arch supports sequentially arranged along a preset path of an arch bridge and opposite-pull rods arranged on the arch supports in a penetrating manner, and the opposite-pull rods are detachably connected with the arch supports; the opposite-pull rods for connecting every two adjacent arch supports are arranged between the two adjacent arch supports, the two middle arch supports are each provided with two rows of opposite-pull rod holes which are formed in an up-down layered mode and extend in the longitudinal bridge direction so that the opposite-pull rods corresponding to every two adjacent span arch rings can be arranged in an up-down layered mode, and the two ends of each opposite-pull rod are fixed to the two adjacent arch supports through anchorage devices respectively. and the two ends of the opposite-pull rods can be used as tensioning ends. By tensioning the opposite-pull rods before construction of all stages of the arch bridge, unbalanced horizontal tension borne by the arch support in the construction process can be offset, and the structural stability ofthe arch support is improved; the opposite-pull rods are detachably connected with the arch supports, the opposite-pull rods can be detached for turnover use after full-bridge construction is completed, the use efficiency of the opposite-pull rods is improved, and the cost is reduced.
Description
technical field [0001] The present application relates to the technical field of bridge construction, in particular to a three-arch bridge structure against unbalanced horizontal thrust. Background technique [0002] Arch bridge is a common bridge structure with a long history of development. It is widely used in various bridge projects because of its beautiful line shape, good mechanical performance and excellent spanning ability. Especially in the massive construction of infrastructure such as highways and high-speed railways, more and more arch bridges are favored by engineers and owners as spanning structures, and have been successfully applied to practical projects to achieve better economic and social benefits. [0003] When the existing continuous arch bridge is constructed on the arch ring and the arch structure, the arch foot of the arch ring will generate an unbalanced horizontal thrust on the abutment, and the unbalanced horizontal thrust will affect the stability...
Claims
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IPC IPC(8): E01D4/00E01D19/00
CPCE01D4/00E01D19/00
Inventor 张凤凰邢志强李鸿文周黎明葛艳丽刘怀刚王焕张鑫向韬廖盛荣王金梁
Owner ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD