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Case History of a Full Scale Axial Load Test of Sheet Piles

机译:板桩全尺寸轴向载荷试验的案例历史

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Short span bridges in the U.S. that are located near rivers and streams typically use sheet piles to defend the abutment against erosion and scour. In such bridges, the abutment axial load demands are usually carried by driven piles installed behind the scour protection sheet piles. An alternative bridge abutment design approach, successfully used for decades in Europe and in some projects in the U.S., involves installing sheet piles for the double function of scour protection and axial load bearing. This design paradigm shift has the potential to significantly reduce construction cost. However, widespread implementation and acceptance of this design approach requires full-scale axial load tests on instrumented sheet piles. This paper presents an axial load test program carried out at a test site in North Carolina that shows that the axial stiffness and load capacity of the sheet pile was comparable to the response recorded in the comparison H-pile when normalized for differences in the tip and surface areas.
机译:在美国,靠近河流和溪流的短跨度桥梁通常使用板桩来保护桥台免受侵蚀和冲刷。在这样的桥梁中,桥基轴向载荷需求通常由安装在防冲刷板桩后面的打入​​桩来承担。另一种桥梁桥台设计方法已在欧洲和美国的一些项目中成功使用了数十年,其中涉及安装板桩以发挥冲刷保护和轴向承载的双重功能。这种设计范式的转变有可能显着降低建筑成本。但是,这种设计方法的广泛实施和接受要求对仪表板桩进行全面的轴向载荷测试。本文介绍了在北卡罗来纳州的一个测试地点执行的轴向载荷测试程序,该程序表明,当对尖端和端部之间的差异进行归一化时,板桩的轴向刚度和承载能力与比较H桩中记录的响应相当。表面积。

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