Our company’s design for the “Top-pushing of Steel Box Girders for the Xia Ba Bridge on the Outer Ring Road Logistics Project of Guizhou Shuanglong Aviation Port” has been successfully completed.

Release time:

2020-07-23 14:41

Source:

2020 July of the year 23 On the day, Yang Jian, Chief Engineer of Kan She Co., Ltd., Li Yinbin, Director of the Bridge Division, and Guo Lin, Director of the First Municipal Design Institute, attended the on-site event marking the successful completion of the jacking of the steel box girder for the Xiaba Bridge on the outer ring road project of the Guiyang Shuanglong Aviation Port Logistics Area. At the command of the project headquarters, the final one-meter segment of the steel box girder jacking operation for the Xiaba Bridge began smoothly. As the last meter of the steel girder was successfully advanced, the two spans of this bridge—each... 305m The jacking of the steel box girder has been successfully completed, marking another solid step forward toward the completion target of this project’s key construction milestone.

The Guizhou Shuanglong Aviation Port Logistics Outer Ring Road Project has a total length of 12.84 km. The design standard is for urban expressways. Standard subgrade width: 40 m, design speed: 60K m / h, bridge design load city -A The bridge has a total deck width of 36.5 meters. The major key projects along the route include the Hulu Mountain Tunnel, the Guilong Avenue Interchange, the Erbao Interchange, the Jincui Lake Bridge, the Xiaba Bridge, and the Jianshe Avenue Interchange. The bridge-to-tunnel ratio is... 26% Jian'an Fei Yue 27.8 100 million yuan; the project up to 2016 Construction drawing design work began in the year. 2018 Construction officially began last year and is currently ongoing.

Xia Ba Bridge is located on the outer ring road of the Shuanglong Aviation Port Logistics Area in Guizhou. Underneath the bridge, it simultaneously crosses the main line of the Xia Ba interchange of the Guiyang Jianpo to Xiao Bi Expressway, which has already been completed and opened to traffic. D Ramp A and Ramp B, maximum bridge height 23.9m The existing facilities of the expressway are important factors that influence the scale of the bridge and impact the construction project. During construction, ensuring the operational safety of the expressway is the primary issue that must be carefully considered. Our company, taking into account all relevant controlling factors, has adopted a design featuring separate main bridges for the left and right spans. (55 + 105 + 90 + 55) m The design scheme for the incremental launching construction of a constant-section continuous steel box girder has achieved excellent results.

It is worth noting that the steel box girders of the main bridge, each measuring 305 meters in length for the left and right spans, were erected using a single-span, multi-point synchronous incremental launching method. In addition to the bridge piers, three temporary supports were provided. Here, the maximum cantilever length for jacking is 75 m, of which the steel guide beam has a length of... 35.4m , maximum jacking weight 4500t This is the first project of its kind in Guizhou, representing a valuable attempt to carry out top-push construction of a large-span mountain bridge over a high-speed interchange without using scaffolding.