RESEARCH ON CONCRETE CRACK PREVENTION METHOD FOR TAIL FRAME IN JINNAH HYDROPOWER PROJECT

摘要

Cracks always appear in the floor, roof, side wall and center wall of tail frame concrete. For avoiding and decreasing thermal cracks in the plant base and tail water frame concrete of Jinnah hydropower project, temperature control computation and analysis is applied. The longest section is adopted as research object to simulate the 3D temperature and stress course by finite element method. On the basis of simulation results, the optimized temperature control and crack preventing method, reasonable suggestion and corresponding temperature control index are put forward for floor, wall and roof respectively so as to give reference to designers and constructors.