U.S.-Japan Joint Seminar: Post Peak Shear Failure of RC Piers Subjected to Cyclic Loading

9815558 shing1999年10月，美国科学家将参加在日本山梨市举行的关于循环荷载作用下钢筋混凝土桥墩峰后剪切破坏的美日研讨会。联合组织者是科罗拉多大学博尔德分校的成培深教授和日本名古屋大学的田边忠明教授。本次研讨会将重点讨论钢筋混凝土（RC）桥墩的抗剪性能，这是一个关系到桥梁结构在地震中的性能和安全的重要问题。研讨会将提供一个论坛，讨论钢筋混凝土柱峰后剪切性能的理论和实验，回顾和总结最先进的混凝土材料模型和分析方法，可以用来模拟和理解钢筋混凝土柱的剪切性能，并确定未来的研究需求和可能的合作研究课题。合理可靠的分析模型是提高我们对钢筋混凝土桥墩抗剪性能的理解，改进现有的抗震设计和改造方法，并允许对现有桥梁的地震安全性进行现实评估的必要条件。研讨会将围绕以下主题进行讨论：1)钢筋混凝土桥墩抗剪性能的理论、实验和现场观察，以及工程实践中的需要；2)混凝土材料的力学行为和建模以及有限元分析方法的最新进展；3)钢筋混凝土桥梁结构构件模型、体系分析及性能分析。研讨会的组织者特别努力让年轻的研究人员作为参与者和观察员参与。与该领域的日本专家交流想法和数据将使美国参与者能够推进自己的工作，并为未来的合作项目奠定基础。在讨论会之后，预计将编写和出版介绍资料。这份报告的可用性将在地震工程研究所的通讯上刊登广告

9815558ShingThis award supports the participation of American scientists in a U.S.-Japan seminar on Post Peak Shear Failure of RC Piers Subjected to Cyclic Loading, to be held in Yamanashi, Japan, in October, l999. The co-organizers are Professors Pui-Shum Shing at the University of Colorado, Boulder and Tada-aki Tanabe at Nagoya University in Japan. The seminar will focus on the shear behavior of reinforced concrete (RC) bridge piers, which is an important issue pertaining to the performance and safety of bridge structures during earthquakes. The seminar will provide a forum to discuss theory and experiments on the post-peak shear behavior of RC columns, to review and summarize the state-of-the-art concrete material models and analytic methods that can be used to simulate and understand the shear behavior of RC columns, and to identify future research needs and possible cooperative research topics on this subject. Rational and reliable analytic models are needed to enhance our understanding of the shear behavior of RC piers, to improve current seismic design and retrofit methods, and to permit a realistic assessment of the seismic safety of existing bridges. Discussion at the seminar will be structured around the following topics: 1) theory, experimental and field observations of the shear behavior of RC piers, and the needs in engineering practice; 2) mechanical behavior and modeling of concrete materials and recent developments in finite element analysis methods; and 3) structural component models system analysis and behavior of RC bridges. Seminar organizers have made a special effort to involve younger researchers as both participants and observers. The exchange of ideas and data with Japanese experts in this field will enable U.S. participants to advance their own work, and will set the stage for future collaborative projects. Following the seminar, it is anticipated that the presentations will be prepared and published. The availability of this report will then be advertised in the Newsletter of the Earthquake Engineering Research Institute.***