Influence of earthquake frequency content on soil dynamic properties at CAO site

被引：5

作者：

Carvajal, JC ^{[1
]}

Taboada-Urtuzuástegui, VM ^{[1
]}

Romo, MP ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Engn, Mexico City 04510, DF, Mexico

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2002年 / 22卷 / 04期

关键词：

transfer function; dynamic properties; amplitude spectrum; system parameter identification;

D O I：

10.1016/S0267-7261(02)00019-2

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The installation of vertical downhole arrays in the field that record the soil behavior during earthquakes, has opened the opportunity of exploring another alternate method for assessing the soil dynamic properties by solving the inverse problem. This article proposes a methodology for solving this problem using spectral analysis of downhole arrays records. The one-dimensional shear wave propagation model was used, considering a homogeneous-viscoelastic medium. This methodology was applied at the site known as Central de Abasto Oficinas (CAO), which is located in the lake zone of the Mexico City. The results indicate that even relatively low frequencies have a noticeable effect on dynamic soil properties. Shear modulus increases and damping ratio lessens when the frequency rises. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：297 / 308

页数：12