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Replacement of support of Sutong Bridge
Sutong Bridge is located in the eastern part of Jiangsu, connecting Nantong and Changshou City, Suzhou. The total length of the project is 32.4 kilometers, which is composed of three parts: shore connection project, cross bridge project and south shore connection project. Among them, the wiring length of about 15.1 km, the south line of about 9.2 km, about 8.2 km long span bridge.
Project overview
Sutong Bridge is located in the eastern part of Jiangsu, connecting Nantong and Changshou City, Suzhou. The total length of the project is 32.4 kilometers, which is composed of three parts: shore connection project, cross bridge project and south shore connection project. Among them, the wiring length of about 15.1 km, the south line of about 9.2 km, about 8.2 km long span bridge.
The North connection project of Sutong Bridge is k1184+275 ~ 1198+390, and the connection project of the south bank is k1208+850 to k1215+870, and there are 37 bridges in all. Among them, the main bridge 30, split line cross bridge 2, ramp bridge 5 span according to classification, all of 11 bridges, bridge 14, bridge 12; according to the classification of the superstructure of the main spans across the board, prestressed hollow plate girder bridge 26, assembling part of prestressed composite box girder bridge 1, the cast-in-situ box girder bridge 10. The substructure of the whole bridge is mainly composed of column pier, column platform and pile foundation. The expansion joints are mainly steel expansion joints, and the support is mainly circular plate and basin rubber bearings.
The bridge in the process of operation, because of the long-term effect of large tonnage bearing load causes the bridge bearing severely damaged, in October 2017, the bridge approach in lifting bearing replacement, in order to ensure the bearing replacement process, bridge bearing pad stone surface is smooth and no defects, repair and leveling and Jack put the position of the Shanghai bearing Hummer the replacement of temporary leveling glue and special bearing pad stone structure adhesive.
Replacement of structural adhesive by support
1. at normal temperature solidify fast, dry quickly, curing 1.5h at normal temperature.
2. at normal temperature after 30 minutes can reach a high strength of 80%, jacks fast synchronized placement.
3. can quickly under pressure, can withstand the pressure of rapid reverse, ensure the bridge girder lifting bearing replacement smoothly.
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HM-Q20D is two component ,high thixotropic paste structural adhesive, mainly used for repairing and leveling of bridge piers, abutment, the surface of the plate beam and chiseled position which will lay the jack after.
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