A steel diagonal braced continuous rigid frame bridge
A technology of rigid frame bridges and diagonal braces, applied in bridges, bridge construction, bridge parts, etc., can solve problems such as adverse impacts on the lives of surrounding residents, limited increase in bridge spanning capacity, and impact on bridge structure durability, so as to reduce creep deformation , reduce self-weight, reduce the effect of structure noise
Active Publication Date: 2022-04-08
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 application relates to a continuous rigid frame bridge with steel diagonal braces, which relates to the technical field of rail transit bridge engineering, and includes multiple concrete piers; a continuous concrete box girder deck, which is arranged above the multiple concrete piers; Steel diagonal braces, one end of each pair of steel diagonal braces is symmetrically fixed on both sides of the longitudinal bridge of one of the concrete pier columns, and the other end is fixed on the lower surface of the concrete box girder deck; and each of the steel diagonal braces Diagonal braces form a triangular structure with concrete pier columns and concrete box girder deck. The steel diagonal braced continuous rigid frame bridge of the present application improves the spanning capacity of the rigid frame bridge, eliminates the disadvantage of easy fatigue and cracking of the steel-concrete joint used in the mid-span of the concrete box girder deck, and reduces the structural noise of the rigid frame bridge.
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