Structural responses of FRP sheet piles under cantilever loading
Structural responses of FRP sheet piles under cantilever loading
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DOI：
10.54113/j.sust.2023.000021
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发表时间：
2023-05
期刊：
影响因子：
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通讯作者：
J. Wilt;Ruifeng Liang;H. Gangarao;Jeremy Mostoller
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文献类型：
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作者：
J. Wilt;Ruifeng Liang;H. Gangarao;Jeremy Mostoller
板桩是用于临时或永久性水土保持结构（如地下停车场结构和海堤）的互锁段。虽然钢由于其强度和易于制造而被广泛使用，但它在盐水中会生锈。纤维增强聚合物（FRP）复合板桩耐氯化物腐蚀，具有较高的耐腐蚀性，但其力学性能在长度和宽度上存在差异。土-结构相互作用是一个具有挑战性的设计问题。本研究旨在发展一套标准化的FRP复合板桩抗弯承载力测试方法。悬臂式FRP板桩固定与砂混凝土混合物的~70 psi（0.48 MPa）的抗压强度进行了测试，在静态载荷下。应变计和LVDT用于收集高达和超过峰值诱导应力的变形响应数据。结果表明，改进后的试验程序可以帮助工程师设计高效的板桩结构，并成为制定ASTM标准的基础。
Sheet piles are interlocked segments used for temporary or permanent soil and water retaining structures such as below-grade parking structures and sea walls. Although steel is commonly used due to its strength and ease of manufacturing, it rusts in saltwater. Fiber reinforced polymer (FRP) composite sheet piles are resistant to chlorides and have higher corrosion resistance, but their mechanical properties vary in length and width. Stress risers at corrugation corners make soil-structure interaction a challenging design issue. This research aims to develop a standardized test procedure to determine the resisting moment capacity of FRP composite sheet piles. Cantilevered FRP sheet piles fixed with a sand-concrete mixture of ~70 psi (0.48 MPa) compressive strength were tested under static loads. Strain gages and LVDTs were used to collect data on deformation response up to and beyond peak induced stress. Results suggest that the refined test procedure can assist engineers in designing efficient sheet pile structures and become a basis to develop ASTM standard.