Key Construction Technology of Heavy Trestle Bridge in Tianjin Gaoyin 117 Building
The construction method of the main building and the podium in Tianjin Gaoyin 117 Building uses normal construction method. Excavation area of foundation excavation is 12. 41million square meters, the main building locates in the center of the foundation excavation, which is far away from the edge of it, and the structure of the main building construct firstly and then the podium, so the lifting of heavy components of the main building basement has become a difficult problem in construction. Trestle bridge is an important channel for heavy component transportation in main building. In this project, the support structure is used to set up the heavy trestle bridge, which includes reinforced concrete trestle bridge of circular ring support and the new steel structure trestle bridge. This technology solves the problem that the heavy steel structures of the main building of the basement cannot be lifted caused by the podium and the main building construction using the normal construction method. This technology not only speeds up the construction progress, but also saves the cost.