Research Of Reinforcement Calculation Method For Controlling Temperature Shrinkage Crack Width In RC Members

At present the temperature effect of reinforced concrete structural cracks caused the control mode, mainly through the present main through the selection of materials, construction technology and structure design of the three aspects. Concrete material selection and construction technology to temperature crack control research has been relatively mature. Structural design aspects mainly through setting temperature is adjustable seam, rational configuration temperature shrinkage steel and adopt compensation temperature concrete three ways. Setting temperature shrinkage reinforced concrete structural components to control temperature shrinkage crack development is civil engineering technicians ready to accept an effective way of, and has been used in many projects. But now to using a temperature shrinkage crack development mechanism of reinforced inhibition is not clear, no unified or more explicit temperature shrinkage crack reinforcement of calculation methods. In concrete structures for the temperature shrinkage is configured in the quantity, main reinforced by design personnel of experience. Designers in the design of the combination of using multiple ways more in design, if by adopting the above three structure design, so that not only cause measures of waste, sometimes might not achieve the desired goal.This paper based on the large structure analysis software on both ends of the embedded solid reinforced concrete members are the basic model under the action of temperature changes by changing nonlinear analysis, finite element reinforced reinforcement ratio, observation its crack width change with temperature crack width, to find out the relationship between reinforcement ratio. Analyze its reinforcement ratio inhibition mechanism of fracture development.This paper analyses the concrete crack width and reinforced that the diameter and reinforcement ratio for, the relationship between the reinforcement ratio increase in a certain range of concrete crack width will decrease, reinforcement ratio in equal under the condition of the smaller reinforced diameter, produce temperature shrinkage crack width is small; Small and medium size for building structure, in uniform temperature component function main consideration of component of the Japanese temperature changes in reinforcement design influence, when temperature effect on the temperature effect; take Through the analysis of concrete component that under uniform temperature variation analysis of nonlinear finite element simulation can be more true reaction concrete stress, and is feasible.