Municipal bridge repairing construction method
A construction method and bridge technology, applied in bridge maintenance, bridges, bridge parts, etc., can solve problems such as difficult bonding, loose and peeling repair materials, etc., achieve good bonding effect, reduce loose peeling, and improve connection stability.
Active Publication Date: 2020-10-16
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
Method used
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Embodiment Construction
[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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The invention relates to the technical field of bridge maintenance, and especially relates to a municipal bridge repairing construction method. The method comprises the following steps: S1, breaking broken concrete in an expansion joint transition area; S2, fully moistening the groove wall of a preformed groove through water; S3, fixing reinforcing steel bar rings to the bottom of the preformed groove; S4, placing an expansion joint body in the preformed groove, and staggering the anchor rings of the expansion joint body and the reinforcing steel bar rings; S5, putting in transverse steel bars, and connecting the transverse steel bars to the anchor rings and the reinforcing steel bar rings at the same time; S6, pouring steel fiber reinforced concrete into the preformed groove, and performing vibrating and plastering to form a steel fiber reinforced concrete layer; S7, laying geotextile on the steel fiber concrete layer, and performing watering maintenance for 2-3 h; and S8, removing the geotextile, paving asphalt concrete above the steel fiber concrete layer, and rolling to form an asphalt concrete surface layer. According to the bridge repairing method, the situation that the repairing material is loosened and peeled off from the preformed groove too early can be reduced, and the effect of improving the durability of the bridge repairing structure is achieved.
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