Mechanical Property Analysis For The Continuous Rigid Frame Bridge With Long-Span

With the development of science technology and traffic enterprise, the continuous rigid frame bridge has been growing up rapidly in the recent years with it's unique predominance of handy construction, economical cost, reasonable internal force and comfortable travelling. It almost has become the first selective bridge style when the main span is in the range from 200 to 300m.But the theories and experience are not very perfect for its short appearance. There are still several probloms in the construction.Relying on the Weijiazhou bridge, aiming at the difficulties in analysis of long-span complex bridge structure, we explore the method of simulating analysis. Analyzing on structure simulation at the view of simulation analysis of structures, according to the characteristics of the actural structural and mechanical behavior, holding on the key factors on structural analysis, we simplified the finite element models at the base of modeling principle. The spatial stress state of real bridge on construction and service was analyzed by the method.We adopt reasonable computation to analyze the construction process in view of the practical construction of long-span continuous rigid frame bridge. The calculation of construction procedural is carried out, the analysis is made that the construction process of long span prestressed concrete continuous bridge constructed by cantilever method. It is provided for adjusting control in different construction stage, which achieve the optimal control and come to the conclusion. All these can provide foundation for carrying out the effective control in the product.The theory and the method which the paper based on structure analysis indicates well the actual mechanics state of the bridge structure in the construction process and it would be available for reference for the construction of identical kind of bridges.