Integral bridge descending construction method and construction equipment
A construction method and overall technology, applied in bridge construction, bridge, bridge maintenance, etc., can solve the problems of complex process and high cost, and achieve the effect of low construction cost and reduced construction cost
Inactive Publication Date: 2010-06-09
CHINA CONSTR SECOND ENG BUREAU LTD +1
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Problems solved by technology
[0006] The invention provides a bridge overall lowering construction method and construction equipment to solve the technical problems of high cost and complicated process of the existing old bridge lowering and reconstruction construction method
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[0055] Examples see figure 1 , figure 2As shown, in order to ensure the integrity of the bridge during the descent process, steel structures 8 are used at both ends of the abutment and pier cover beam 4 to temporarily connect the bridge deck structure and the cover beam. The temporary connection between the bridge deck structure and the bridge pier adopts a steel structure, and M36 bolts are drilled and buried on the bridge deck and the reinforced concrete structure of the cover beam for connection. The main body of the temporary connecting steel structure is composed of 14mm thick steel plate and additional ribs, and the gap between the steel structure steel plate and the concrete structure is filled with grouting.
[0056] see Figure 3-6 As shown, in order to prevent accidental horizontal displacement or even collapse during the bridge’s descent, reinforced concrete guide tenons 9 and guide grooves 10 are respectively set on the abutment cover beam 1 and cap platform. Th...
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The invention relates to a bridge integral descending construction method and construction equipment thereof. The method comprises: breaking the traffic and connecting the bridge deck and the coping by steal structure on both sides of the abutment coping and the pier coping; constructing the abutment and the pier; constructing reinforced concrete guiding tenon and guiding groove on the two abutment coping ends; constructing abutment supporting and switching bearer and abutment limiting seat on two sides of the pier on the bearing platform of the abutment; mounting a sand cylinder on the abutment supporting and switching bearer for supporting the abutment coping; mounting an anti-tilting cushion block on the abutment limiting seat; truncating the abutment pier column; transferring the vertical load of the abutment coping completely to the sand cylinder; filling to descend the sand cylinders on both sides of the bridge abutment to the designed height at the same time; and connecting theabutment and the pier column. For using a certain amount of sand cylinder to descend the bridge integrally, the invention is a new simple, economic, safe and effective method for descending and reforming old bridge.
Description
technical field [0001] The invention relates to a construction method and construction equipment for bridge lowering and reconstruction. Background technique [0002] With the development and improvement of road traffic, some originally navigable rivers no longer need to be navigable. The high bridges on these rivers used to be built due to the need for navigation, and their high embankments often caused a lot of load on the abutment, which would even endanger the safety of the bridge. Impact on urban landscape and land use. Therefore, it is imperative to lower and transform these bridges. The overall lowering technology of the bridge adopted in the present invention is a simple, economical, safe and effective new method proposed for this problem. [0003] There are mainly two methods for the lowering and reconstruction of old bridges: one is to remove the bridge deck and hang it from the upper girder, and then erect the girder and re-construct the bridge deck after lower...
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IPC IPC(8): E01D22/00
Inventor 余索黄振斌杨文朝杨占奎杨发兵钟燕
Owner CHINA CONSTR SECOND ENG BUREAU LTD