Analysis Of The Influence Of Temperature To Underground Continous Wall Interal Force And Deformation In Deep And Large Foundation Excavation

The development and utilization of the underground space is becoming one of the most efficient methods of the lack of urban land in the urbanization at present, and the deep and large foundation excavations are more and more common. In the developed area of our country, the underground continuous wall is in common use in the enclosure structure of deep and large foundation excavation. The big and large foundation excavation always links with the long period and hard construction. During the construction, it is important to take consideration of the influence of the structure's internal force and deformation which is aroused by the seasonal change of temperature and hydration heat induced by the large underground massive concrete structure construction in design.This dissertation reviews the analysis and design method of enclosure structure internal force and deformation, the theory and numerical simulation method of simulated hydrated reaction at first. Then, it takes a detailed analysis of temperature influence of a transformer substation foundation excavation engineer in Tokyo, discusses the influence of the structure's internal force and deformation which is aroused by the seasonal change of temperature and hydration heat induced by the large underground massive concrete structure construction. Compared to the results of fact tests, it validated that the analysis model and method of this dissertation is reseanable and viable, and indicated the seasonal change of temperature is the major factor of influence of internal force and deformation in the underground continuous wall; and the hydration heat certaintly affects the partial stress a little but hardly affects deformation of underground continuous wall. At last, in adoption of the theory and method presented above, this dissertation analyzed the similar engineer in Shanghai for design department.