Multi-Objective Reliability-Based Optimum Design and Upgrading of Seismic-Resistant RC Structures for Cost- Effectiveness

基于多目标可靠性的抗震 RC 结构优化设计和升级，实现成本效益

• 批准号: 9703725
• 负责人: Franklin Cheng
• 金额: $ 31万
• 依托单位: Missouri University of Science and Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-15 至 2000-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9703725&HistoricalAwards=false
• 关键词: Multi; Objective; Reliability; Based; Optimum

This project will develop a systematic approach to integrating optimization algorithms, seismic reliability engineering and scio-economics for determination of target reliabilities and formulation of cost-effectiveness design and upgrading of earthquake-resistant reinforced concrete structures. Cooperative research will be carried out at the University of Missouri-Rolla (UMR) and the University of California, Irvine (UCI). The following tasks will be conducted at UCI. (1) Approach for determination of optimal target reliability to revise and extend a platform for the systematic integration of the technical and scio-economic aspects of earthquake engineering: (2) Appraisal of current seismic criteria to examine the cost-effectiveness of specific existing criteria for earthquake-resistant design from the standpoint of minimum expected life-cycle cost; and (3) Critical examination and development of cost models to review and examine the available scio-economic models and information, including calibration and validation with recent earthquake damage data, and develop new or revised models for the proposal of reliability-based optimum design and upgrading of seismic resistant structures. At UMR the following five tasks will be considered. (1) Development of multi-objective optimization with fuzzy logic and genetic algorithm for target reliability constraints; (2) Development of computer program with building code requirements such as UBC 1994 for optimum design and upgrading of reinforced concrete structures; (3) Numerical studies of typical low-rise and high-rise office and apartment buildings for various seismic zones and target reliabilities; (4) Damage control of optimal-designed structures through nonlinear analysis; and (5) Assessment of design building code requirements and recommendations. Through collaboration and integration the joint effort is expected to establish a systematic procedure for determining optimal target reliability or acceptable risk for the design or upgrading of a specific structure or class of structures; (2) advance optimization technique with multi-objective function, robust and global convergence, target reliability as well as minimum expected life-cycle costs; and (3) make recommendation of optimal building code requirements to the professional community and building code writers.

该项目将开发一种系统的方法，用于整合优化算法，地震可靠性工程和SCIO经济学，以确定目标可靠性，成本效益设计的制定以及抗震抗性钢筋混凝土结构的升级。 合作研究将在密苏里大学 - 罗拉大学（UMR）和加利福尼亚大学尔湾分校（UCI）进行。 以下任务将在UCI进行。 （1）确定最佳目标可靠性以修订并扩展了地震工程技术和SCIO - 经济方面的系统整合的平台：（2）对当前地震标准的评估，以检查地震抗性设计的特定现有标准的特定现有标准的成本效益，从最低预期的预期生存成本的角度来看； （3）批判性检查和开发成本模型，以审查和检查可用的SCIO经济模型和信息，包括使用最近的地震损害数据进行校准和验证，并为基于可靠性的最佳设计和升级地震抗性结构开发新的或修订的模型。 在UMR，将考虑以下五个任务。 （1）针对目标可靠性约束的模糊逻辑和遗传算法的多目标优化的开发； （2）开发具有建筑代码要求（例如UBC 1994）的计算机程序，用于最佳设计和升级混凝土结构； （3）针对各种地震区和目标可靠性的典型低层和高层办公室和公寓楼的数值研究； （4）通过非线性分析对最佳设计结构的损害控制； （5）评估设计建筑法规要求和建议。 通过协作和集成，共同努力有望建立系统的程序，以确定特定结构或结构类别的设计或升级的最佳目标可靠性或可接受的风险； （2）具有多目标功能，鲁棒和全球收敛，目标可靠性以及最低预期生命周期成本的提前优化技术； （3）向专业社区和建筑代码作家提出最佳建筑法规要求。