ANALYSIS AND CONTROL OF THERMAL STRESS IN CONSOLIDATION OF CONCRETE FOUNDATION OF OLYMPIC STADIUM
鸟巢地基混凝土凝固温度应力分析与控制

The thermal stress in consolidation of concrete is analyzed for construction of the National Stadium, the main track and field stadium for Olympics 2008 in Beijing. A numerical simulation of the thermal stress was performed by finite element method, considering the deformation induced by shrinkage and creep of the concrete. A method to deal with the boundary condition of traction was adopted according to the practical situation of the stadium. An optimal procedure was suggested to prevent the surface cracking and adjust the thermal stress of the concrete. This study contributes to achieve lower cost of the detection, higher efficiency and better quality of the construction.