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Research on Calculation Methods of Bending Resistance Bearing Capability of Reinforced Concrete Beams in Service

Author: LuXiaoFeng
Tutor: CaoDaFu
School: Yangzhou University
Course: Structural Engineering
Keywords: Concrete beams Steel corrosion Bond failure Finite Element Bearing capacity Calculation method
CLC: TU375.1
Type: Master's thesis
Year: 2005
Downloads: 171
Quote: 2
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Abstract

Concrete structure, the use of a number of years after they have undergone many years of wind, frost, snow and rain, by the nature of the physical, chemical and biological role, and now there have been varying degrees of damage, structural mechanical properties of decay. Decline in the degradation of the mechanical behavior of concrete structures, bearing capacity, security and reliability of the structure can not be guaranteed, the normal use of the building has been greatly affected, There is an urgent need to do with the carrying capacity of the concrete structure a reasonable assessment to provide reliable theoretical basis for the subsequent use of the building and the reinforcement and repair. In this paper, the Provincial Board of Education research topic in the carrying capacity of concrete structures \In order to achieve the purpose of reinforcement corrosion of reinforced concrete bonding performance degradation, reducing the steel and concrete way of the bonded area, will soon be experimenting beam tensile reinforcement fully or partially exposed, which can take advantage of the tensile reinforcement and concrete inviscid The knot or part of the bond structure to simulate different steel corrosion rates in the concrete structure. Tests to bond failure analysis of reinforced concrete between the degree of adhesion failure length and bond failure location and other factors in the ultimate bearing capacity of concrete structures, find out the law explore concrete reinforcement corrosion The working principle of the structure. By the finite element method simulation and analysis of the content of the test results obtained good agreement with the experimental results. The main purpose of this paper is to study in the reinforced concrete structure in the steel corrosion method of calculation of the ultimate bearing capacity and its subsequent carrying capacity to make an appropriate and rational evaluation. Through the study of the concrete structure carrying capacity assessment, we can structure reasonable security assessment and the remaining life of scientific predictions, provide a theoretical basis for its further economic rationality maintenance program around in the carrying capacity of concrete structures assessment, this paper focuses on the following: (1) the bond between the steel and concrete failure length and bond failure location unbonded with the semi-bonded concrete structures ultimate bearing capacity; concrete reinforced moderate corrosion Liang ultimate bearing capacity calculation method; corroded reinforced concrete beams ultimate bearing capacity calculation method; 4. in concrete beam non-linear finite element simulation and analysis;

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