Study of Static and Fatigue Performance of Basalt Fiber Rein

发布时间：2020-12-22 23:54

　　由于如木材、石材、混凝土以及钢材等现有材料建造的当前结构存在着许多问题:重量大、腐蚀严重、性能退化以及其他一些老龄化问题,使得对于新材料的需求显得尤为迫切。这些问题不仅影响结构的正常使用、结构的服役年限以及维护成本,而且还会带来大量的安全和事故隐患。所有的这些问题促使人们开始研究高性能的新型建筑材料,例如纤维增强（FRP）复合材料。FRP复合材料的主要特点是轻质、耐腐蚀以及高强。由于FRP材料具有耐极端荷载的性能,故在海洋环境以及化工厂中得到广泛应用,通常在这些环境里结构的最大问题是钢材的腐蚀问题并伴随着较高的维护成本。此外,FRP在加固梁、柱以及桥面板等结构构件方面也有广泛应用,其中在1980年,FRP复合材料以GFRP及CFRP板材的形式第一次应用于加固混凝土结构中。除上述应用外,FRP型材的应用也越来越受到工程界的重视。桁架结构与由实体构件组成的结构相比,具有轻质、安装迅速简单、可为结构提供刚度以及承受重大荷载的特点,这使得桁架结构在19世纪就成为研究一个热点。桁架结构广泛应用于桥梁、屋架、塔架、车库等结构中。因为桁架结构只承受轴向荷载,所以FRP型材以其优异的单向力学性能成为桁... 

【文章来源】：东南大学江苏省 211工程院校 985工程院校 教育部直属院校

【文章页数】：130 页

【学位级别】：硕士

【文章目录】：
摘要
Abstract
Acknowledgement
Chapter 1 Introduction and Literature Review
    1.1 Overview
    1.2 Fiber reinforced polymer （FRP）:
        1.2.1 Fibers
        1.2.2 Polymer matrix
            1.2.2.1 Thermosetting resin
            1.2.2.2 Thermoplastic resin
    1.3 Civil Engineering Applications
    1.4 FRP trusses
        1.4.1 Recent FRP Truss System
    1.5 FRP Connections
        1.5.1 Mechanical connections
            1.5.1.1 Single Bolted Connections
            1.5.1.2 Multi-Bolted connection
        1.5.2 Bonded-Bolted connections:
    1.6 Objectives
    1.7 Methodology of the investigation
Chapter 2 Material Properties of Basalt Fibre Reinforced Polymer Plates and Bolts
    2.1 Introduction
    2.2 Material
        2.2.1 Material properties:
            2.2.1.1 Tension test
            2.2.1.2 Shear test:
        2.2.2 Shear strength for bolts
            2.2.2.1 Shear test results
    2.3 Summary
Chapter 3 Static Behaviour of Basalt Fibre Reinforced Polymer Multi-bolted Connections
    3.1 Introduction
    3.2 Material
    3.3 Connection specimens
        3.3.1 Connection fabrication
        3.3.2 Experimental Program
            3.3.2.1 Number of bolts
            3.3.2.2 Bolts arrangement
            3.3.2.3 Bolts diameter
            3.3.2.4 Bolts pattern
            3.3.2.5 Connection techniques
    3.4 Test Set-Up
    3.5 Instrumentation
    3.6 Test results:
        3.6.1 Failure Modes
        3.6.2 Number of bolts:
            3.6.2.1 Load-Displacement
            3.6.2.2 Comparison of failure load
        3.6.3 Bolts arrangement
        3.6.4 Bolts' diameter
            3.6.4.1 Load-Displacement
            3.6.4.2 Comparison of failure load
        3.6.5 Bolts pattern
            3.6.5.1 Load- displacement
            3.6.5.2 Comparison of failure load
        3.6.6 Connection techniques
            3.6.6.1 Failure Modes
            3.6.6.2 Load- displacement
            3.6.6.3 Comparison of failure load
    3.7 Summary
Chapter 4 Fatigue Performance of Basalt Fibre Reinforced Polymer Multi-bolted Connections
    4.1 Introduction
    4.2 Experimental program
    4.3 Experimental Set Up and Loading Programs
    4.4 Experimental results
        4.4.1 Bolts type
            4.4.1.1 Comparison of Failure Modes
            4.4.1.2 Fatigue Life and S-N Curves
            4.4.1.3 Post fatigue
        4.4.2 Connection technique
            4.4.2.1 Comparison of Failure Modes
            4.4.2.2 Fatigue Life and S-N Curves
            4.4.2.3 Post fatigue
    4.5 Summary
Chapter 5 Conclusion and Future Work
    5.1 Conclusion
    5.2 Future work
References



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