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木材横纹抗拉强度及其荷载持续作用效应研究

Abstract第4-5页
摘要第6-9页
Chapter 1 Introduction第9-19页
    1.1 The source of topic, research purpose and significance第9-12页
        1.1.1 The source of topic第9页
        1.1.2 Research background and significance第9-12页
        1.1.3 Research objectives第12页
    1.2 Research on the DOL effect and analysis第12-17页
        1.2.1 Mechanical analysis of wood tension strength perpendicular to grain第12-14页
        1.2.2 Research on the DOL effect and experimental studies第14-17页
    1.3 Main contents of research第17-19页
Chapter 2 Literature review第19-35页
    2.1 Mechanical properties of the wood perpendicular to grain第19-26页
        2.1.1 Structural scales of wood第19-21页
        2.1.2 Linear elasticity and stiffness properties第21-23页
        2.1.3 Tensile strength第23-25页
        2.1.4 Measures for strength improvement第25-26页
    2.2 Global tensile strength of the wood perpendicular to grain analysis theory第26-30页
        2.2.1 Weibull weakest link theory第26页
        2.2.2 Basic Weilbull theory第26-28页
        2.2.3 Volume and stress distribution effects第28-30页
    2.3 Factors affecting the strength and other properties第30-34页
        2.3.1 Anatomical factors第30-32页
        2.3.2 Environmental factors第32-33页
        2.3.3 Service factors第33-34页
    2.4 Summary第34-35页
Chapter 3 Experimental study of the DOL effect of wood in tension perpendicular tograin第35-46页
    3.1 Introduction to the tests第35-36页
    3.2 Materials and specimens第36-39页
    3.3 Short-term test第39-41页
    3.4 Long-term test第41-44页
    3.5 Summary第44-46页
Chapter 4 Tests results and discussion第46-59页
    4.1 Short-term test第46-49页
    4.2 Long-term test第49-54页
    4.3 Creep analysis of long-term dead load test results第54-55页
    4.4 Discussion第55-57页
    4.5 Summary第57-59页
Chapter 5 Application of the DOL effect第59-69页
    5.1 Application of the DOL of the stress history with time第59-63页
        5.1.1 Gerhards Model第60-61页
        5.1.2 Foschi and Yao Model第61-62页
        5.1.3 Nielsen Model第62-63页
    5.2 Application of the DOL effect in national wood structure design code第63-67页
        5.2.1 Canada wood structure design specification第63-64页
        5.2.2 The European design code第64-65页
        5.2.3 Australian standard第65-66页
        5.2.4 American nation design specification第66-67页
    5.3 DOL adjustment factor KDOL according to Canada design specification第67-68页
    5.4 Summary第68-69页
Conclusion第69-70页
References第70-75页
Acknowledgements第75页

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