Structural Optimization for Buildings under Stochastic Excitations

随机激励下建筑物的结构优化

• 批准号: 1234243
• 负责人: Glaucio Paulino
• 金额: $ 31.5万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-15 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1234243&HistoricalAwards=false
• 关键词: Structural; Optimization; Buildings; under; Stochastic

The goal of this proposal is to tailor modern topology optimization theories and procedures to improve practical design processes of buildings subject to stochastic excitations caused by natural or man-made hazards. By considering random vibrations and structural reliability into the structural design process, the proposal aims to provide optimum structural system for buildings. If successful the theoretical development will lead to optimal design of tall building that saves construction material while providing reliable service and expected safety during earthquake events. The industrial partner will act as advisor to the project to ascertain that the results are relevant to the society.The project focuses on concepts of structural topology optimization considering dynamic excitations for building systems. It will create a new framework for finding optimal topology of structures under stochastic excitations caused by wind and earthquake loadings. It will also investigate influence of stochastic excitations on optimal topology and find equivalent load profiles for efficient topology optimization. By integrating random vibration theory and system reliability into topology optimization, it would be possible to identify optimal topologies for discrete (beam/column) elements as well. A simplified equivalent static load profile will be developed to facilitate design of lateral load systems. Results of this research will be adapted into the curriculum at UIUC, and a new optimization course will be introduced. The Co-PIs plan to continue their involvement in the existing programs at the institution to attract students from underrepresented groups.

该提案的目的是量身定制现代拓扑优化理论和程序，以改善受自然或人为危害引起的随机激发的建筑物的实践设计过程。通过将随机振动和结构可靠性考虑到结构设计过程中，该提案旨在为建筑物提供最佳的结构系统。如果成功的话，理论发展将导致高大建筑的最佳设计，从而节省建筑材料，同时在地震事件期间提供可靠的服务和预期安全性。工业合作伙伴将担任该项目的顾问，以确定结果与社会有关。该项目专注于考虑建筑系统动态激发的结构拓扑优化的概念。它将创建一个新的框架，以在风和地震载荷引起的随机激发下查找结构的最佳拓扑。它还将研究随机激发对最佳拓扑的影响，并找到等效的负载曲线以进行有效的拓扑优化。通过将随机振动理论和系统可靠性整合到拓扑优化中，也可以识别离散（梁/柱）元素的最佳拓扑。将开发简化的等效静态负载曲线，以促进横向负载系统的设计。这项研究的结果将适应UIUC的课程，并将引入新的优化课程。 Co-Pis计划继续参与机构现有计划，以吸引来自代表性不足的团体的学生。