Research On The Construction Techniques, Monitor And Control Of Concrete Filled Steel Tube Arch Rib Of Liantuo Bridge

Concrete Filled Steel Tube (CFST) arch bridge is a new type of bridge which is widely applied in China recently,and it is a relatively ideal structural form for long span arch bridge. With the background of the practice of Liantuo Bridge,in the view of point of feasible in technology and reasonable in economy,the key techniques and difficulties in the construction of CFST arch bridge are analyzed and discussed in the thesis. The disadvantages in the current design and construction and the improvement method are also indicated. The internal forces during the erection of the CFST arch bridge have been calculated. A series of measure in construction,including the value of loading in the most unfavorable cases,the load sequence and the tension of the temporary prestressing tendons,is determined in the thesis. The calculated results and the measured results obtained in site are compared. It can be referenced in the next research of this type of structures.