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首页> 外文期刊>Japanese Geotechnical Journal >Differences of the amount of settlement due to liquefaction of ground obtained from the method based on stress method and based on energy method
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Differences of the amount of settlement due to liquefaction of ground obtained from the method based on stress method and based on energy method

机译：从基于应力法的方法获得的地面液化，沉降量的差异，基于能量法

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The authors applied the idea of "Structural calculation of superstructure by seismic design based on energy balance method" to the ground and developed a liquefaction evaluation method. The basic idea of this proposed method is as follows, 1) Input energy of whole ground is calculated by energy spectrum, 2) Input energy is distributed to each layer as accumulate plastic strain energy, 3) degree of liquefaction damage is evaluated from the relationship between accumulate plastic strain energy and volumetric strain of each layer. In this paper, case study analysis were conducted with stress method and energy balance method under the same condition for virtual grounds, and the settlement amount was compared. The correction factor was required for an appropriated evaluation in the stress method while energy method requires no correction factor. The energy spectrum can be a good indicator of magnitude of seismic motion, if the intensity of seismic motion is defined by the magnitude of settlement caused by liquefaction. As a result, it was found that there was no significant difference in the evaluation of the settlement amount between the stress method and the energy method within the scope of these cases in this study.
机译：作者将“基于能量平衡方法基于能量平衡法”对地震设计结构计算的思想应用于地面，开发了一种液化评价方法。这种提出的方​​法的基本思想如下，1）整个地面的输入能量通过能谱计算，2）输入能量分布到每层作为累积塑性应变能量，3）液化损坏程度从关系中评估损伤程度在每层累积塑性应变能量和体积应变之间。在本文中，用压力法和能量平衡法进行了案例研究分析，在相同的虚拟场条件下进行了比较了结算量。在应力法中拨款评估需要校正因子，而能量方法不需要校正因子。如果地震运动强度由液化引起的沉降幅度限定，则能谱可以是地震运动幅度的良好指标。结果，发现在本研究中这些病例范围内的应力法和能量法之间的沉降量的评估没有显着差异。

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