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首页> 外文期刊>Engineering Technology and Applied Science Research >Evaluation Methods of Vertical Subgrade Reaction Modulus and Rotational Resistance Moment for Seismic Design of Embedded Foundations
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Evaluation Methods of Vertical Subgrade Reaction Modulus and Rotational Resistance Moment for Seismic Design of Embedded Foundations

机译：嵌入式基础垂直路基反应模量和旋转电阻力矩的评价方法

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摘要

In a seismic design of embedded foundations, the vertical Subgrade Reaction (SR) acting on a foundation bottom surface and the Rotational Resistance Moment (RRM) generated by the SR are calculated using an SR Modulus (SRM). The SRM and RRM depend on both ground rigidity and Foundation Width (FW). However, the SRM and RRM calculation methods adopted in design codes might not properly consider their FW dependency. In this study, SRM and RRM evaluation methods for embedded foundations subjected to a seismic load were examined by conducting a two-dimensional finite element analysis under the condition where ground rigidity and FW were changed considering the nonlinearity of the ground. The results show that when the seismic load is large and the nonlinearity of the ground appears, the SR distribution is different from the assumption in the design code. The FW dependency of the SRM was lower than the assumption of the design code. Furthermore, methods to calculate the SRM and RRM in accordance with the FW and ground rigidity are proposed.
机译：在嵌入式基础的地震设计中，使用SR模量（SRM）计算作用在基础底表面和由SR产生的旋转电阻力矩（RRM）的垂直路基反应（SR）。 SRM和RRM取决于地面刚度和基础宽度（FW）。但是，设计代码中采用的SRM和RRM计算方法可能无法正确考虑其FW依赖。在本研究中，通过在考虑地面的非线性的情况下，通过在接地刚度和FW改变的条件下进行二维有限元分析来检查对受地震载荷进行地震载荷进行抗震载荷的嵌入式的SRM和RRM评估方法。结果表明，当地震载荷大并且出现地面的非线性时，SR分布与设计代码中的假设不同。 SRM的FW依赖性低于设计代码的假设。此外，提出了根据FW和地面刚度计算SRM和RRM的方法。

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