Study on Flexural Bearing Capacity of Normal Section of Prestressed Concrete Beams under Chlorine Salt Erosion

Xuefang Li

Admissions and Training Department, Tianjin Construction Engineering Workers University, Tianjin, 300000, China

Abstract: In order to quantitatively analyze the flexural bearing capacity and prestress of normal section of concrete beams under chloride salt erosion environment, a model for analysis and analysis of mechanical be-havior of concrete beams under chloride salt erosion environment is proposed based on the combined control constraints of ｌｏａｄ and stress. The stress structure model of concrete beams under chloride erosion environ-ment is analyzed. Taking softening coefficient and shear transfer coefficient as constraint parameters and combining with the measurement results of residual tensile strength, the relationship between bearing capacity and stress is analyzed. The flexural bearing capacity and mechanical behavior of concrete beams under chloride erosion environment are analyzed. Under high stress conditions, the softening mechanics equation of concrete beams under chloride erosion environment is obtained, and the mechanism of creep generation and ｌｏａｄ distribution of concrete beams is analyzed. In order to guide the behavior of concrete beams under the environment of ecological chloride salt erosion, the bending capacity of normal section of prestressed concrete beams under chloride erosion environment can be quantitatively analyzed. The simulation results show that the model can accurately analyze the prestressing force under chloride erosion environment, improve the flexural bearing capacity of the normal section of concrete beams, and effectively guide the construction of buildings.

Keywords: Chloride erosion environment; Prestress; concrete beam; Bearing capacity