The Construction Monitoring And Parametric Analysis Of A Long Span Continuous Rigid Frame Bridge

In recent years, with the rapid development of transportation business, the stepof bridge construction is also accelerating, and the meaning of bridge constructioncontrol are becoming more and more significant. In the whole construction controlprocess, in order to make sure that the bridge is consistented with the requirementsof linear and actual stress state in construction and service stage, we should considerall kinds of influences on bridge construction process. This paper is based on along-span prestressed concrete continuous rigid bridge, through calculated andanalysed, The results of linear and girder force in each construction process areobtained,and the parameters which have great influence to the structure are alsoobtained through the parameter sensitivity analysis.The main research contents andresults are followed:(1) Described the main contents of prestressed continuous rigid frame bridgeconstruction control, discussed and analysed the error types of prestressedcontinuous rigid frame in construction, introduced related plan of this prestressedconcrete continuous rigid bridge construction control, provided theory basis andreferenced scheme for the bridge construction control.(2) Through Bridge Design and Construction Monitoring System (BDCMS)developed by Professor YanDongHuang, calculated the construction and servicestage of this prestressed concrete continuous rigid bridge, analysed the deflectionand stress in bridge construction and service stage, to guide the constructioncorrectly and ensure that the bridge’s alignment and structural stress can meet thedesign requirements.(3) Combined with static analysis calculation model, analysed the parameterssensitivity of this prestressed concrete continuous rigid bridge, The results ofconcrete density, concrete elastic modulus, prestressed concrete shrinkage and creephave much influence to the linear and stress of bridge are obtained, and throughcontrast with the former design parameters,calculated the change of deflection andstress, analysed the influence degree of parameters error to deflection and stress in prestressed concrete continuous rigid bridge, reached significant referenceconclusions of design and construction in the same type of bridge.