open bridge structure
A technology of structure and support, applied in the direction of bridges, bridge construction, bridge parts, etc., can solve the problems of trestle bridges that are difficult to solve the comprehensive force of tension and shear, the type of support does not meet the design requirements, and frequent breakage of support anchor bolts, etc. Achieve the effect of reducing frequent replacement of supports, solving frequent fractures, and reasonable force
Active Publication Date: 2017-04-12
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Problems solved by technology
[0003] According to the owner's documents and on-site surveys, the Yuehai Ferry Vehicle Movable Trestle has the following problems: the anchor bolts of the supports frequently break, are subject to varying degrees of wear, and the fractures show obvious fatigue fracture characteristics; the pin holes on the steel beams and supports Badly worn
The originally designed support and anchor bolts are subjected to tension, shear, and torsion at the same time. It is difficult to solve the comprehensive stress problem of tension, shear, and torsion only by replacing the anchor bolts or reducing the self-weight of the trestle.
[0005] To sum up, the conventional support types do not meet the design requirements of this bridge, so it is urgent to study a new type of open bridge support
Method used
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[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0027] refer to figure 1 , the open bridge support structure of the present invention includes a main beam 10 and a support set on a concrete seat 30 through an anchor bolt 22, a longitudinal end of the main beam 10 is hinged with the support, and the support includes a main support 20 And the edge support 21 that is positioned at both sides. refer to figure 2 and image 3 , Figure 9 , the main support 20 is hinged to the middle web 11 of the main beam 10 through the main support pin 204 and the center web joint radial bearing 111 . refer to Figure 4 , Figure 10 , Figure 12 and Figure 13 , the side support 21 is hinged to the side web 12 of the main beam 10 through the side support pin 214 , the side web joint centripetal bearing 120 , and the oblong hole 215 on the side support 21 . The side support 21 is provided with an elastic member ...
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The invention discloses a movable-bridge support structure. By means of the movable-bridge support structure, the force condition of a support of a movable bridge is improved, the problem that anchor bolts of the support of the movable bridge are frequently fractured is solved, and it is accordingly avoided that the support is frequently replaced. The movable-bridge support structure comprises a main beam and a support fixedly arranged on a concrete base through anchor bolts, and one longitudinal end of the main beam is hinged to the support. The support comprises a main support body and edge support bodies located on the two sides. The main support body is hinged to a middle web plate of the main beam through a main-support pin shaft and a middle-web-plate joint radial bearing. The edge support bodies are hinged to edge web plates of the main beam through edge-support pin shafts, edge-web-plate joint radial bearings and oblong holes in edge support bodies, and elastic components acting on the hinged ends of the edge web plates are arranged on the edge support bodies. Shearing blocks are arranged on the outer sides of the anchor bolts.
Description
technical field [0001] The invention relates to bridges, in particular to an open bridge support structure. Background technique [0002] Qiongzhou Strait Railway Ferry Project North and South Port motor activity trestle is a single cantilever open bridge with a span of 25.5m, and the bridge is a π-shaped steel plate girder bridge. There are two supports at the rear end of the trestle, one on each of the left and right webs. The anchor bolts of the support are directly embedded in the concrete base, and the steel beam and the support are directly connected by pins. Two hydraulic cylinder lifting devices are installed at a position 3.5m away from the support, one for each of the left and right webs, which play the role of lifting and opening the bridge. Usually, the trestle is in a raised state. When the ferry enters the port, the bridge is lowered and the front end is placed on the deck of the ferry. Then the car drives into the ferry through the bridge. Finally, the ferry...
Claims
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IPC IPC(8): E01D19/04
CPCE01D19/043
Inventor 向律楷戴胜勇艾宗良
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD