The gravilastic equation and the emergence of gravity waves in large earthquakes
The gravilastic equation and the emergence of gravity waves in large earthquakes
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重力方程和大地震中重力波的出现
DOI：
10.1785/bssa0860051220
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
C. Lomnitz
中科院分区：
文献类型：
--
作者：
C. Lomnitz
软土地基上的结构倒塌是非线性复杂土建系统中的几种新兴效应之一。重力应力-应变方程是从第一原理推导出来的，我们证明它可能会导致大循环应变下从瑞利波到重力波的相变。高层建筑的不稳定可能是由粒子的顺向运动和短波长的结合引起的。就损害而言，大放大对软土地基的影响可能不如特定地质环境中出现的顺行表面波那么严重。
Structural collapse on soft ground is one of several emergent effects in the nonlinear complex soil-building system. The gravilastic stress-strain equation is derived from first principles, and we show that it may lead to a phase transition from Rayleigh to gravity waves at large cyclic strains. Instability of high-rise buildings may be caused by a combination of prograde particle motion and short wavelengths. The effect of large amplifications on soft ground may be less critical in terms of damage than is the emergence in specific geological environments of prograde surface waves.