Mass Concrete Pouring Block Temperature Stress Field Simulation Analysis

Currently, the massive concrete structure is broadly applied to among the large civil engineering constructions like the water conservancy hydroelectric, building construction and road bridge construction, etc. and usually concentrate to appear in the concrete dam, premises foundation and greatly across one degree bridge etc. mainly be subjected to pouring basin of the force part to build process amid. But the massive concrete builds process in the pouring basin amid, is easily turned by heat of hydration and peripheral environment temperature etc. temperature benelux carries of action, very easily started construction to generate temperature tears in the early years, brought engineering very disadvantageous impact, pushed the search of massive concrete temperature stress field thus.Along with the process and universality of the computer and the value analyzes a method of previous go, the calculator value imitated a true analysis technique to become one of the search way of studying the massive concrete temperature stress field's most. This text analyzed massive concrete temperature field and in response to field of force by the numbers according to the finite element method of ANSYS software.Concrete temperature field and stress field is a complicated coupling physical field of time and space. The main aspect studying is temperature field:the heat source released speedy in a short time is from the cement hydration heat which inside concreting blocks, the concreting blocks with pneumatic of thermal convection heat conduction and fundamental thermal conduction is the Main heat dissipation method. But because of the margin is different, lead to each part of concreting blocks have different eliminate heat velocity, then lead to the temperature distributes nonuniform, and appear temperature gradiant, and generate temperature stress. Along with the progress of the slow-moving heat dissipation, concreting blocks finally hit to stabilize temperature.Solving the method of temperature field and stress field mainly are divided into theory analytical method and numerical analysis method. Because of the complexity of temperature stress field can hardly get an accurate solution with the theory law, we usually use numerical analysis method nowadays. The finite element method has to be easy to adapt to an irregular margin, partial encryption mesh and easy to get along with, computer finite element method, so becoming the mainly most way of research.Derived finite element method of massive concrete temperature field, introduced finite element calculation principle of stress field, and listed the computing step of the direct-coupling law of ANSYS.With the foundation of engineering physically, refined various thermal learns' and mechanics' parameter, basic data, the actual pouring basin builds pattern and complicated boundary condition of massive concrete. Take orders the spirit of science experiment and takes ANSYS software as foundation, Simulation research on various work condition under three kinds of different conditions of massive concrete temperature stress field, analyzed simulation results, and get some meaningful conclusion to actual engineering. Tallied up the law of temperature field and stress field changes with the time, spatial distribution condition, and carried on detailed analysis to some special time,and the particular nodal point, get the conclusion that reasonable deci sew the mass control pouring basin in deci to build size, take the measures of lowering the concrete poring temperature and smaller dosage of cement, use low thermal cement all the energy is useful to let up a of the thermal stress of massive concrete.