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Study on the Relevance of the Damage to Bearing Capacity about RC Girder Bridge

Author: LaiXiaoJun
Tutor: MeiKuiHua；SunShengJiang
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: Reinforced concrete damage Carrying capacity Finite Element Analysis Damage Identification
CLC: U441
Type: Master's thesis
Year: 2010
Downloads: 100
Quote: 2
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Abstract


With China's rapid development of road transport , the early construction of a large number of reinforced concrete bridge due to overloading , structural aging and lack of maintenance management and other environmental factors that affect human or suffered different degrees of structural damage , the continued accumulation of these injuries would bridge structure carrying capacity and life of severely affected , even a threat to the safety of operations . How accurate assessment of damage with the remaining capacity of the existing highway bridge is currently no uniform standards and methods, so damaged concrete beams carrying capacity to become an urgent need to address the important challenges. This article relies Communications Department , Zhejiang Science and Technology Project \damage the basic theory, and a brief analysis of the mechanism of concrete produce damage . Of reinforced concrete structures in several common types of injuries and their effect on the structure were carried out detailed analysis and explanation . For the study of damage to the bearing capacity foundation in theory . Secondly , detailing several commonly used and reinforced concrete constitutive constitutive . Detailed analysis of two kinds of concrete damage and fracture mechanics properties of the causes and diseases and injuries of the two proposed finite element simulation method . Again, from the removal of the old bridge of reinforced concrete hollow slab bearing capacity test conducted research and analysis , and through the establishment of separate reinforced concrete ANSYS finite element model to simulate the concrete damage and cracks these two diseases affect the carrying capacity of the structure , and thus estimate sentence structure carrying capacity remaining . By comparing experimental values ??with the theoretical values ??tested and found good agreement , show that the proposed method is feasible finite element simulation , the damage can be more accurate analysis of the structure of the remaining carrying capacity. Finally , the method is proposed to solve the problem in depth Institute .

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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics
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