A kind of municipal bridge repair construction method
A construction method and technology for bridges, applied in bridge maintenance, bridges, bridge materials, etc., can solve the problems of loose and peeling off and difficult bonding of repair materials, and achieve the effect of improving durability.
Active Publication Date: 2021-12-07
深圳市和顺达建筑工程有限公司
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Problems solved by technology
[0004] In view of the related technologies mentioned above, bridge expansion joints are mainly repaired by replacing the filling material in the transition zone of the expansion joints. The inventor believes that the refilled repair materials are not easy to bond with the inner side of the reserved groove of the expansion joints. Defects, under the frequent impact of driving load, the repair material filled in the reserved groove of the expansion joint may loose and peel off prematurely
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[0038] The application will be described in further detail below in conjunction with the accompanying drawings.
[0039] refer to figure 1 , the embodiment of the application discloses a municipal bridge repair construction method, comprising the following steps:
[0040] S1. Use a pneumatic pick to remove the damaged concrete in the transition area of the expansion joint, take out the main body 2 of the original expansion joint, and use an electric drill to drill several anchor holes for matching with the expansion bolts along the length direction of the reserved groove 1. Use high pressure The water gun washes the residual concrete in the reserved tank 1; during the process of washing the residual concrete, the pressure of the high-pressure water gun is set to 80-100Mpa, and the water outlet of the high-pressure water gun is kept at a distance of 10-20cm from the rinsed part of the reserved tank 1 .
[0041] Then use a high-pressure water gun to remove the loose aggregat...
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This application relates to the technical field of bridge maintenance, in particular to a construction method for repairing a municipal bridge, which includes the following steps: S1, removing the damaged concrete in the transition zone of the expansion joint; S2, fully wetting the groove wall of the reserved groove with water; S3 , Fix the reinforcement ring at the bottom of the reserved groove; S4, place the main body of the expansion joint in the reserved groove, so that the anchor ring of the expansion joint body and the reinforcement ring are interlaced; S5, put in the horizontal reinforcement, and make the horizontal reinforcement At the same time, it is connected to the anchor ring and the reinforcement ring; S6. Pour steel fiber concrete into the reserved groove, vibrate and plaster the surface to form a steel fiber concrete layer; S7. Lay geotextiles on the top of the steel fiber concrete layer, and sprinkle water for 2‑3h ; S8. In addition to the geotextile, pave asphalt concrete above the steel fiber concrete layer, and roll to form the asphalt concrete surface layer. The repairing direction of the bridge can reduce the premature loose peeling of the repairing material from the reserved groove, and has the effect of improving the durability of the bridge repairing structure.
Description
technical field [0001] The application relates to the technical field of bridge maintenance, in particular to a construction method for repairing municipal bridges. Background technique [0002] In the construction of municipal bridges in my country, prefabricated concrete hollow slab girder bridges are widely used. The most common damage form of the superstructure is that the expansion joints fail first under load; Repairs were made to maintain the good structural stability of the municipal bridge. [0003] In related technologies, the repair method for bridge expansion joints is mainly: chisel out the original filling material in the transition zone of bridge expansion joints, replace the expansion joints and pour concrete repair materials into the reserved grooves, and then finish the process of polishing, plastering and curing. Complete repairs to bridge expansion joints. [0004] In view of the related technologies mentioned above, bridge expansion joints are mainly re...
Claims
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IPC IPC(8): E01D22/00E01D19/06E01D101/26
CPCE01D19/06E01D22/00E01D2101/262
Inventor 唐科靳明
Owner 深圳市和顺达建筑工程有限公司