防灾减灾工程学报2017，Vol.37Issue(1)：1-8,8.DOI:10.13409/j.cnki.jdpme.2017.01.001
风化半圆形河谷引起的土层与地形放大效应
Soil and Topographic Amplification Effects by a Weathered Semi-circular Canyon
摘要
Abstract
To investigate theoretically the 2D soil amplification,topographic amplification and their relative significance,an exact solution to the scattering and diffraction of plane SH waves induced by a weathered semi-circular canyon is proposed by the wavefunction expansion method within the framework of elastodynamics.The ground motions for both of the weathered and unweathered canyons are calculated and compared to reveal the roles of 2D soil and topographic effects.It is found that the 2D soil effects usually dominate the amplification pattern of surface ground motions within the weathered canyon,while the topographic effects control the amplification of ground motions outside the inhomegeneity.The 2D soil amplification generally outweighs the topographic amplification.关键词
风化河谷/地形效应/土层放大效应/波传播与散射Key words
weathered canyon/topographic effect/soil layer amplification/wave propagation and scattering分类
建筑与水利引用本文复制引用
张宁,高玉峰,代登辉,陈欣..风化半圆形河谷引起的土层与地形放大效应[J].防灾减灾工程学报,2017,37(1):1-8,8.基金项目
国家自然科学基金项目(51479050,51608172,41630638)、国家重点基础研究发展计划(973计划)项目(2015CB057901)、水利部公益性行业科研专项项目(201501035-03)、中央高校基本科研业务费项目(2015B01214)资助 （51479050,51608172,41630638）
