Deterministic and Stochastic Analysis of Seismic Response ofEquipment and Block-like Structures

设备和块状结构地震响应的确定性和随机分析

• 批准号: 9503766
• 负责人: Pol Spanos
• 金额: --
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-04-15 至 2000-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9503766&HistoricalAwards=false
• 关键词: Deterministic; Stochastic; Analysis; Seismic; Response

9503766 Spanos This project conducts a research investigation featuring improved models which accurately describe the seismic response of equipment and of some other block-like structural systems. The approach undertaken in this study considers the impact of the block with the foundation as a continuous process of time. This impact model represents the influence of most of the important geometrical, mechanical, and material quantities such as material stiffness, block aspect ratio, value of the coefficient of friction, and the plastic behavior of the structure. Further, new numerical methods for analysis and design of multi-block systems based on versatile discrete element method will be developed. Stochastic analysis of block-like structures under earthquake excitations will also be carried out. Upon developing the theoretical and numerical aspects of the proposed methods, these models and the analyses will be applied to investigate the design problems of a variety of practical equipment and historical monuments structures. ***

这个项目进行了一项研究调查，其特点是改进了模型，准确地描述了设备和其他一些块状结构系统的地震反应。本研究采用的方法将砌块与基础的影响视为一个连续的时间过程。该冲击模型代表了大多数重要的几何、力学和材料量的影响，如材料刚度、块宽高比、摩擦系数值和结构的塑性行为。此外，还将发展基于通用离散元法的多块系统分析和设计的新数值方法。地震作用下块状结构的随机分析也将进行。在发展提出的方法的理论和数值方面，这些模型和分析将被应用于研究各种实用设备和历史遗迹结构的设计问题。* * *