Zhejiang Jinliwen Expressway Strengthening

Project overview

Jinjiwen expressway is an important road connecting China with Heilongjiang to Hainan Sanya, Shanghai Yunnan to Ruili two national trunk road in the central area of Zhejiang Province, Zhejiang province is planning the highway trunk line network in the "two vertical and two horizontal, eighteen, three, even three channels around the" one "cross". Since the Jinhua second bridge Jinliwen highway Hangjinqu expressway, Jinhua City, Wuyi County, Yongkang City, Jinyun County, Lishui City, Qingtian County, Yongjia County, Wenzhou City, Wenzhou in the south end point is connected with the white elephant Yongtaiwen highway, a total length of 234.053 kilometers, the Wenzhou West transit section is 23.2 km (K0+500~K23+700), bridge a total of 31, the total mileage totaling more than 110 km. Because of the high-speed bridges and tunnels have countless, so called "bridge club".

Since the Jinli Wen expressway has been repaired, it has planned and focused on the reinforcement and maintenance of the bridge every year. In this investigation, found the department of bridge because of heavy load, wind erosion and other reasons, there are cracks, corrosion, bearing damage and other diseases, is seriously affected by the capacity of the bridge, increasing the driving risk, so the need for the bridge maintenance and reinforcement, eliminate hidden dangers.

Reinforcement requirements

According to the existing technical condition of the bridge, the existing diseases, the needs of vehicle traffic and the trend of the future traffic development, we should make an analysis and judgement of the necessity and feasibility of the bridge reinforcement for Jinli Wen expressway, which should meet the following requirements.

1. After the reinforcement of the bridge, its structural performance, bearing capacity and durability can meet the requirements of the use.

2. The substructure of the bridge has sufficient potential to meet the requirements of the reinforced bridge to the foundation.

3. Comprehensively and comprehensively evaluate the advanced nature, economy and durability of the strengthening technology, and strive to adopt all kinds of better strengthening schemes.

Strengthening time: May 2013

Strengthening content: crack repair, reinforcement steel bar, steel plate, carbon fiber, and replacement of synchronous lifting, box girder lateral casting new anchorage tooth plate, an external prestressed steel beam, and adding the asphalt concrete and reinforced concrete pouring and repairing concrete defects.

Reinforcement materials: HM-500 anchoring adhesive,HM carbon fiber fabric, HM-180C3P carbon fiber adhesive,HM-120 steel plate bonding adhesive