Monitoring And Analysis On The Temperature Field Of The Floorslab Of Super-length Concrete Structure

Along with the building of cities and the enhancing of the standard of living, more and more super-length structures were designed. Super-length frame structures without expansion joint have been widely used in engineering project. On the other hand, the control of the crack of concrete became more difficult. To the crack of concrete, the influence of the temperature can't be ignored. So it is necessary to study the temperature field of the floorslab of super-length concrete structure.The temperature field of the buildings is complicated, and it is influenced by the ambient temperature, solar radiation, air convection, sky radiation, ground radiation and so on. So it is not enough to study only in theory. In order to confirm the temperature field accurately, it is necessary to contact the theory analysis and site test. Some finite element analysis theories and methods of numerical simulation of the temperature field are also introduced in brief.In the thesis, the site test of super-length concrete structure is introduced in detail, and the hourly temperature of the floorslab of the tested building in summer and winter was calculated with the finite element software-Ansys. The results show that it is effectual to take some measures, such as pre-stressing, constructing the later poured bands, to insure the security of structure, the super-length design is achieved, and it can be referred in design. The results from calculation had well consistent with the experimental results. So it is effectual to simulate the temperature field of the floorslab of super-length concrete structure by finite element analysis method.