Equivalence between 2D and 3D Numerical Simulations of the Seismic Response of Improved Sites
Equivalence between 2D and 3D Numerical Simulations of the Seismic Response of Improved Sites
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改进场地地震响应 2D 和 3D 数值模拟之间的等效性
DOI：
10.1201/9781439833766.ch117
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发表时间：
2005
影响因子：
5
通讯作者：
G. Bakas
中科院分区：
文献类型：
--
作者：
A. Papadimitriou;A. Vytiniotis;G. Bouckovalas;G. Bakas
本文研究了如何准确地使用 2D 数值分析来模拟改进场地的地震响应的真实 3D 问题。具体来说，比较了相关 3D 和 2D 地震地面响应分析的参数结果，并提出了一种方法，用“等效”2D 分析（紧密模拟 3D 分析结果）取代耗时（且通常不可用）的 3D 分析。重点放在软（粘性）土壤的替换和固化方法以及三 (3) 种改进几何形状上：a) 嵌入式士兵桩墙，b) 柱/桩网格和 c) 封闭方形网格。
This paper studies how 2D numerical analyses may be accurately used for simulating the truly 3D problem of the seismic response of improved sites. Specifically, parametric results are compared from pertinent 3D and 2D seismic ground response analyses and a methodology is proposed for replacing the time-consuming (and usually unavailable) 3D analyses with “equivalent” 2D analyses that closely simulate the results of the 3D analyses. Emphasis is put on replacement and solidification methods of soft (cohesive) soils and on three (3) improvement geometries: a) an embedded soldier pile wall, b) a grid of columns/piles and c) a grid of closed square cells.