Study on the Jacking Force of Girder Closure for Contimuour Rigid Frame Bridge 

Wei ZHANG 

College of Civil Engineering, Chongqing Jiaotong University, Chongqing, 470074, CHINA 

Abstract: The shrinkage and creep of concrete and the temperature change is influence the stress and deformation of the continuous rigid frame bridge greatly. According to Fengtai Huaihe Bridge , using the Finite Element Method, analysis in two closure schemes, cross the bridge girder under dead ｌｏａｄ and 10 years' shrinkage and creep under the action of deflection, the difference of force and moment of the main pier to verify the continuous rigid frame bridge with across the apical pushed closure of superiority and rationality. The results shows that the push closure stress state can improve the construction of the bridge, and have a significant role in solving the cross deflection. Keywords: Continuous rigid frame bridge; Closure; Jacking force; Performance after jacked