Inversion of shallow shear wave velocity profile of engineering site from recordings associated with microtremors array

DONG Lian-cheng; TAO Xia-xin; SHI Li-jing; LI Guang-ying

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Inversion of shallow shear wave velocity profile of engineering site from recordings associated with microtremors array

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- Inversion of shallow shear wave velocity profile of engineering site from recordings associated with microtremors array
- Vol. 29, Issue 2, (2008)
- 作者机构：
  
  1. 哈尔滨工业大学土木工程学院,哈尔滨,150090
  2. 黑龙江科技学院建筑工程学院,哈尔滨,150027
  3. 中国地震局工程力学研究所,哈尔滨,150080
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU459+.3
- Online First：10 July 2013，
  
  Published：2008
- 稿件说明：
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DONG Lian-cheng, TAO Xia-xin, SHI Li-jing, et al. Inversion of shallow shear wave velocity profile of engineering site from recordings associated with microtremors array[J]. 2008, 29(2).
DOI：

DONG Lian-cheng, TAO Xia-xin, SHI Li-jing, et al. Inversion of shallow shear wave velocity profile of engineering site from recordings associated with microtremors array[J]. 2008, 29(2). DOI：

摘要

比较了影响Love波相速度频散曲线的主要因素，通过虚拟反演，说明了利用Love波相速度反演浅层剪切波速度结构的可行性，以地脉动台阵3分量观测记录提取的Love波相速度频散曲线为目标函数，利用遗传算法与单纯形法混合算法，分两种情况反演了某实际工程场地的浅层剪切波速度结构。结果表明，利用从地脉动台阵3分量观测资料中提取的Love波相速度反演工程场地浅层的剪切波速度Vs结构是一种很有前景的技术方法。

Abstract

The soil parameters that effect phase velocity of Love wave are compared; and it is feasible using phase velocity of Love wave to determine shallow shear wave velocity profile of the site by virtual inversion. The first mode phase velocity of Love wave estimated from three-component microtremor array records is chosen as the object function

the shallow shear wave velocity profile of the practical site is inversed by means of a hybrid approach of genetic algorithm and simplex in two typical conditions and are compared with those determined from PS logging data; and it shows that it is a feasible technique using phase velocity of Love wave estimated from microtremors array to determine the shallow S-wave velocity structure of engineering site.

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