| Fatigue Properties of Plain Concrete Under Triaxial Compressive Cyclic Loading |
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| 引用本文： | 曹伟 宋玉普 刘海成. Fatigue Properties of Plain Concrete Under Triaxial Compressive Cyclic Loading[J]. 中国海洋工程, 2004, 18(3): 457-468 |
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| 作者姓名： | 曹伟 宋玉普 刘海成 |
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| 作者单位： | StateKeyLaboratoryofCoastalandOffshoreEngineering,Da!ianUniversityofTechnology,Dalian!16023,China |
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| 基金项目： | ThisworkwasfinanciallysupportedbytheNationalNaturalScienceFoundationofChina (GrantNo.5 0 0 780 1 0 ) |
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| 摘 要： | Experiments were made on plain concrete subjected to triaxial static loading and constant-amphtude compressive fatigue loading with a constant lateral pressure in two directions. The initial confining pressure was O, O. lfc, O. 25fc and O. 4fc, respectively, for the static test, and O. lfc and O. 25fc for the fatigue test. Based on the triaxial compressive constitutive behavior of concrete, the inflexion of confining pressure evolution was chosen to be the fatigue damage criterion during the test. The rule of evolution of longitudinal maximum and minimum strains, longitudinal cyclic modulus and damage were recorded and analyzed. According to the Fardis-Chen criterion model and the concept of equivalent fatigue life and equivalent stress level, a unified S-N curve for multi-axial compressive fatigue loading was proposed. Thus, the fatigue strength factors for different fatigue loading cases can be obtained. The present investigation provides information for the fatigue design of concrete structures.
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| 关 键 词： | 疲劳特性 无筋混凝土 三轴静载荷 损伤 |
Fatigue Properties of Plain Concrete Under Triaxial Compressive Cyclic Loading |
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| CAO Wei ,SONG Yu pu and LIU Hai cheng State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian ,China. Fatigue Properties of Plain Concrete Under Triaxial Compressive Cyclic Loading[J]. China Ocean Engineering, 2004, 18(3): 457-468 |
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| Authors: | CAO Wei SONG Yu pu LIU Hai cheng State Key Laboratory of Coastal Offshore Engineering Dalian University of Technology Dalian China |
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| Affiliation: | CAO Wei 1,SONG Yu pu and LIU Hai cheng State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023,China |
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| Abstract: | Experiments were made on plain concrete subjected to triaxial static loading and constant amplitude compressive fatigue loading with a constant lateral pressure in two directions. The initial confining pressure was 0, 0.1 f c , 0.25 f c and 0.4 f c , respectively, for the static test, and 0.1 f c and 0.25 f c for the fatigue test. Based on the triaxial compressive constitutive behavior of concrete, the inflexion of confining pressure evolution was chosen to be the fatigue damage criterion during the test. The rule of evolution of longitudinal maximum and minimum strains, longitudinal cyclic modulus and damage were recorded and analyzed. According to the Fardis Chen criterion model and the concept of equivalent fatigue life and equivalent stress level, a unified S N curve for multi axial compressive fatigue loading was proposed. Thus, the fatigue strength factors for different fatigue loading cases can be obtained. The present investigation provides information for the fatigue design of concrete structures. |
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| Keywords: | concrete triaxial compressive fatigue loading with constant lateral pressure constant amplitude damage fatigue strength |
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