Construction Control Analysis Of Continuous Rigid Frame Bridge

Along with rapid development of the traffic cause,continuous appearing of the light materials and the constrction technologies,prestressed concrete continuous rigid frame bridges become the most used bridge styles.At present,the large-spaned continuous rigid frame bridges use cantilever constrction generally. When the strctures are finished,the late tunabilities are very small.Once the alignments of the strctures are not very good,which can't macth the expeted values of the designes,which may cause unreasonable structure stresses and series of problems to the completed bridges.Therefore,adjustments of the alignments are very important during the constrction processes.As the Gou Er Xia Bridge beening background,this thesis anatomizes the control of the alignments of the structures.The control of stresses has the same important position as the alignments,which is a supplement to the alignment control.Whether the control of the stresses is good or not indicates the qualities of the alignment control directly. This thesis does analysises on it.To ensure the constrction and the use stage's safety of the high-pired and large-spaned continuous rigid frame bridges,stability problems during the constrction are indispensable.Considing stability of the maximum cantilever stage beening the poorest,this thsis anatomites the 2# pire of the Gou Er Xia Bridge at its maximum stage.Because of the long span,the stability analysis across bridge is indispensible. This thesis does some analysis on it, too.The main research work of this thesis is to complete the whole constrction, ensure strcture's safety during the constrction and stress as well as use performance of the finished ones of continuous rigid frame bridges.It also gives reference for the similar bridges.