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首页> 外文会议>ACI convention >DISPLACEMENT DEMANDS AND SHEAR KEY FORCES IN PILE-SUPPORTED MARGINAL WHARVES WITH STRONG LATERAL-TORSIONAL COUPLING
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DISPLACEMENT DEMANDS AND SHEAR KEY FORCES IN PILE-SUPPORTED MARGINAL WHARVES WITH STRONG LATERAL-TORSIONAL COUPLING

机译：强侧向扭转耦合的桩支撑海码头的位移需求和剪切关键力

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摘要

Pile-supported marginal wharves have geometrical characteristics that make them prone to torsional response when subjected to earthquake induced inertial forces. Because of expected early system non-linear response due to the soil-structure interaction, lateral displacement demands on the piles cannot readily be estimated from conventional elastic modal response spectrum analyses and modal combination techniques. These displacement demands may be obtained using non-linear time-history analysis. Nevertheless, modeling the non-linear response of the wharf is still impractical in many design offices. For this reason, simple approximate methods that can estimate the critical pile displacement demand as the spectral displacement corresponding to a predominant translational (transverse) mode natural period of the wharf multiplied by a Displacement Magnification Factor (DMF) is adequate for design purposes. This paper revisits the earlier work of Benzoni and Priestley (2003) and computes, through non-linear time-history analysis, DMFs of short, long and linked segment wharves. Furthermore, the paper also reports shear key forces observed in the non-linear analyses of linked segment wharves. Finally, equations are proposed for calculating the DMFs and to estimate the forces for the design of shear keys.
机译：桩支撑的边缘码头具有几何特征，使其在受到地震诱导的惯性力时易于扭转响应。由于预期的早期系统由于土壤结构相互作用而导致的非线性响应，因此不能从常规弹性模态响应谱分析和模态组合技术估计桩上的横向位移需求。可以使用非线性时间历史分析获得这些位移需求。尽管如此，在许多设计办公室中仍然是不切实际的模拟码头的非线性响应。因此，可以估计与码头的主要平移（横向）模式自然时段相应的频谱位移乘以位移放大系数（DMF）的简单近似方法是适当的设计目的。本文通过非线性时间历史分析，短，长期和联系分部码头的DMF，重新评估了苯尼里和普里斯特利（2003）和计算的早期工作。此外，本文还报告了在连接段码头的非线性分析中观察到的剪切密钥力。最后，提出了用于计算DMF的方程，并估计剪切键设计的力。

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