Stress Analysis Of Over-length Concrete Structure Under Temperature Effect

Recently, over-length structure has developed rapidly with the enhancement ofcomprehensive national strength and the extension of economic internationalization.The problem about deterioration of structural state in the over-length concretestructure made by the factor of temperature has been recognized in engineers. Inlandscholars have made a lot of research. To ordinary structure with expanded jointaccording with codes, the effect of temperature does not need to be considered. Toover-length seamless structure, the temperature cannot be neglected. It is necessary tocalculate the temperature effect besides details of design.The research work of this paper can be briefed as follows: First, the conceptionof generalized over-length structure is raised by the character of over-length structure.Perfect definition is made for settling problems about over-length structure. Second,finite element model of several typical over-length structures is established, such asframe structure, tube structure and ring structure. Effect under temperature isanalyzed particularly by changing different parameters. Character of stressdistribution and influencing factor is researched. Finally, many important technicalmeasures about over-length seamless structure are proposed in the dissertation.Discussing how to utilize pre-stress to counteract the tensile stress by temperaturetransformation is to reach the purpose of seamless design. The design theory ofover-length pre-stress concrete structure established in the paper can be used inproject experience as instruction.As a combination of theory and practice, this paper is beneficial to improvingthe design of the over-length structure without doubt.