Steel braced continuous rigid frame bridge
A technology of rigid frame bridges and diagonal braces, applied in bridges, bridge parts, bridge construction, etc., can solve problems such as limited increase in bridge spanning capacity, adverse effects on the lives of surrounding residents, and impact on the durability of bridge structures, so as to reduce creep deformation , reduce self-weight, reduce the effect of structure noise
Active Publication Date: 2020-12-25
CHINA MAJOR BRIDGE ENERGINEERING
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Problems solved by technology
[0004] However, in the first method, the externally prestressed steel tendons control the creep deformation of the beam body in the later stage, and the increase in the spanning capacity of the bridge is limited.
The steel box girder of the second method is under the action of live load (driving on the bridge, etc.) bending moment, and the upper and lower edges of the steel-concrete joint are in a state of repeated tension and compression stress, which is prone to serious diseases such as fatigue cracking, thereby affecting the durability of the bridge structure. In the field of urban rail transit, large structural noises are likely to be generated during train operation, causing adverse effects on the lives of surrounding residents
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[0032] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.
[0033] Such as figure 1 As shown, the present application discloses an embodiment of a steel diagonally braced continuous rigid frame bridge, comprising a plurality of concrete piers 3, a concrete box girder deck 1 and a plurality of pairs of steel diagonal braces 2, and the concrete box girder deck 1 is The continuous concrete structu...
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The invention relates to a steel braced continuous rigid frame bridge and relates to the technical field of bridge engineering of rail traffic. The steel braced continuous rigid frame bridge comprisesa plurality of concrete pier studs, a continuous concrete box girder bridge floor and a plurality of pairs of steel braced bars, wherein the continuous concrete box girder bridge floor is arranged above the concrete pier studs; one ends of each pair of steel braced bars are symmetrically and obliquely fixed to two longitudinal sides of one concrete pier stud while the other ends of the of each pair of steel braced bars are fixed to the lower surface of the concrete box girder bridge floor; and each steel braced bar, the concrete pier studs and the concrete box girder bridge floor form a triangular structure. According to the steel braced continuous rigid frame bridge, the crossing ability of the rigid frame bridge is improved, a disadvantage that a steel mixed joint is subjected to fatigue cracking easily in a midspan of the concrete box girder bridge floor is eliminated, and the structural noise of the rigid frame bridge is reduced.
Description
technical field [0001] The application relates to the technical field of rail transit bridge engineering, in particular to a continuous rigid frame bridge with steel diagonal braces. Background technique [0002] At present, the prestressed concrete continuous rigid frame bridge has been widely used in bridge construction due to its unique advantages such as high pier beam consolidation stiffness, smooth driving, and mature construction technology. However, as the span of rigid frame bridges increases, the structural creep and deformation of rigid frame bridges increases, which affects the structural safety and ride comfort of rigid frame bridges. Therefore, the economic span of continuous rigid frame bridges is within 150 meters. [0003] In related technologies, in order to increase the economical span of continuous rigid frame bridges, two methods are generally adopted. The first method is to stretch the external prestressed steel beams to reduce bridge creep; the second ...
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IPC IPC(8): E01D1/00E01D2/04E01D19/02
CPCE01D1/00E01D2/04E01D19/02
Inventor 张强李伟梅江兵曹春明龚文航李苏桂博
Owner CHINA MAJOR BRIDGE ENERGINEERING