Research on Cracking Risk Analysis Method of Steel Plate-Concrete Shear Wall Based on Temperature Field
To simplify the temperature stress analysis process of the steel plate-concrete shear wall under the layered pouring method,this paper combines the FEA with the theoretical calculation method to solve the temperature stress.The temperature and stress monitoring of a steel plate-concrete shear wall was carried out.Based on ABAQUS,the Hetval and Film subroutines were compiled through secondary development to simulate the temperature field of concrete hydration heat without taking measures for construction and with the layered pouring method.The results show that the maximum temperature and temperature difference of concrete can be reduced by layered pouring.With the increase of layers,the temperature decreases more significantly.According to the results of temperature field,the intermediate parameter of comprehensive temperature difference required for theoretical calculation is obtained,and then the temperature stress of concrete is obtained.According to the calculation results,when the wall is poured into six layers,the temperature stress at the age of 15 days is about 1.94 MPa,which is less than the tensile strength of concrete at that age of 1.98 MPa.This can ensure that the concrete does not crack.Compared with the test monitoring results,the error is about 2%,which verifies the feasibility of the method.
steel plate-concrete shear wallcracking riskanalysis methodcomprehensive temperature differencetemperature fieldheat of hydrationlayered pouring
NETL
NSTL
万方数据
