Dynamic Analysis Procedures for Performance-Based Seismic Engineering of Buildings in Urban Areas

9812531 Chopra专业人士已经认识到需要设计结构以满足规定的性能目标。 一个主要的挑战是开发简单，但有效的分析方法的设计，验证，评估和质量控制的结构，使他们现实地满足选定的性能目标。 该研究项目的总体目标是开发适合下一代抗震规范和指南的动态分析程序，以设计新建筑物并评估现有建筑物。 一个层次结构（i）弹性分析程序，以设计或评估建筑物的“完全运行”或“运行”的性能水平，（ii）非弹性分析程序，以设计和评估建筑物的“运行”，“生命安全”或“接近崩溃”的性能水平，和（iii）标准，以评估每个程序的准确性和适用范围将被开发。 此外，还将进行调查，以（1）从基本观点评价现有知识对近源地震动的适用性;（2）推广现有的分析程序，或在必要时，为近源激励开发根本不同的方法。 该项目是与日本研究人员和Degnenkolb工程师（CMS-9812573）的合作成果。 美国和日本的研究人员将使用两国记录的常见近源地面运动，并将其简化的分析程序与过去地震中记录的常见结构进行校准。 该项目得到了CMS-INT联合倡议NSF 98-36“美日城市地震减灾合作研究”第一轮（FY'98）竞赛的支持。" ***

9812531 Chopra It has been recognized by the profession the need for designing structures to meet stated performance goals. A major challenge is to develop simple, yet effective analytical methods for the design, verification, evaluation and quality control of structures so that they realistically meet the selected performance objectives. The overall objectives of this research project are to develop dynamic analysis procedures suitable for the next generation of seismic codes and guidelines to design new buildings and to evaluate existing buildings. A hierarchy of (i) elastic analysis procedures to design or evaluate buildings for "fully operational" or "operational" performance levels, (ii) inelastic analysis procedures to design and evaluate buildings for "operational," "life safe" or "near collapse" performance levels, and (iii) criteria to evaluate the accuracy and the range of applicability of each procedure will be developed. Further, investigations will be conducted to (1) evaluate, from a fundamental point of view, applicability of the present knowledge to near-source ground motions; and (2) generalize the existing analytical procedures or, if necessary, develop fundamentally different methods for near-source excitations. This project represents a collaborative effort with Japanese researchers and Degnenkolb Engineers, (CMS-9812573). Researchers in the U.S. and Japan will use common near-source ground motions recorded in both countries an calibrate their simplified analytical procedures against common structures whose motions have been recorded during past earthquakes. This project is supported under the first round (FY'98) competition of the joint CMS-INT initiative NSF 98-36, "US-Japan Cooperative Research in Urban Earthquake Disaster Mitigation." ***