FATIGUE DEBONDING at the INTERFACE of REINFORCED CONCRETE
Reinforcing steel bar and concrete have diferent mechanical properties.Reinforced concrete(RC)can work normally in actual engineering,which depends on well interfacial bond strength between reinforcing steel bar and concrete.It is the bond strength that makes the stress and strain accommodated between reinforcing steel bar and concrete.Relative sliding or interfacial debonding may occur under external loading,especially cyclic loading.Cyclic loading can be seen in many engineerings,for example,ocean platform and crane girder.Interfacial debonding is one of the main damage forms for RC and its structure.The friction between reinforcing steel bar and concrete decreases under cyclic loading,which accelerates interfacial deboding.A test about interfacial bebonding of RC under cyclic loading is designed.Cyclic loading can be carried by MTS equipment.Through the test,stress and strain of the reinforcing steel bar and concrete are measured respectively,also the relative slippage between steel bar and concrete.At the same time,by the aid of the finite element method-ADINA,bond stress-slippage relationship between concrete and reinforcing steel bar is established,and numerical solurtions are obtained.Numerical results are compared with experimental results.The effects of reinforcing steel bar type and anchor depth on interfacial fatigue are analyzed.It can provide effective numerical ideal and method for investigation of RC lasting quality.
reinforced concrete(RC) interfacial debonding fatigue slippage finite element method(FEM) ADINA
Chen Yanhua Zhu Qingjie Jia Limei Feng Leilei
College of Civil and Architectural Engineering,Hebei Polytechnic University,Tangshan,China
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）