The Construction Quality Control Of Highway C50 Continuous Beam

Continued construction of the highway, in-situ continuous beam has been rapid development and wide application, and its construction process is simple, reasonable force structure, etc., has become a highway bridge a very important architectural forms. China Railway 19 Bureau Group Co., the construction of the Guangzhou(Zengcheng)-Conghua Expressway S13 standard Shuangfeng interworking A Ramp Bridge design is a prestressed concrete continuous beam bridge. According to the requirements of the drawings and the construction site for the bridge construction girder superstructure construction prepared a special program to determine the full framing erection of the upper beam prestressed continuous cast construction, after construction has achieved good quality and appearance.In order to ensure the cast-in-place prestressed concrete continuous beam construction technology of implementation and effective control of continuous beam construction quality as a whole. According to the quality control and acceptance standard requirements, this paper sums up some corresponding precautions:(1) the use of isteel and bowls button scaffolding, full framing, assembled on the scaffold templates and preloading and adjust the bottom mold elevation, steel processing and installation of prestressed steel construction, concrete pouring, the prestressed tensioning, sealing anchor grouting, template support to dismantle to complete the construction of cast-in-place continuous beam.(2) to the construction process each link in each working procedure to control the quality of the cast-in-place beam is the key, in order to ensure the normal conduct of each process and adopted a series of related measures.(3) support build-up, template, steel processing and installation, concrete pouring, the prestressed tensioning, hole grouting and sealing side is the key point of construction quality control. Therefore, only strict control of the process to build the perfect appearance, quality standard of the continuous girder bridge.