摘要
由于所考虑的大洋板块直径为10~3公里数量级,故必须考虑其曲率的影响。又因以百万年计的地壳演变所具有的应力松弛和应变蠕变对造成此裂缝的作用,必须考虑此板块的流变性质。本文是在文献〔9〕的基础上的进一步工作,因大洋海水深度不同,故简化板块上的分布海水荷载为一偏心受压的集中荷载,得到问题的精确解及渐近解。
As the radius of an oceanic plate reaches the order of 103 kilometres, the curvature of the plate should be considered. Furthermore, the rheological property of the plate is taken into account, for the crustal evolution with stress relaxation and strain creeping is responsible for the forming of the fracture.This paper is a continuation of the article 'The Mechanical Model for Oceanic Plate Tectonics'. As the depth of an ocean is different from place to place, the loading effect of the water on the plate is simplified, and displaced by a eccentral load. The exact solution and asymptotic one are given analytically in this paper.
出处
《地震研究》
CSCD
北大核心
1993年第1期100-109,共10页
Journal of Seismological Research
基金
云南省教委1991年应用基础研究基金的支持
关键词
粘弹性模型
珠网裂缝
海洋
板块
Oceanic lithosphere
Viscoelastic model
Spider web shape fracture
