Innocative Hybrid Shear Walls with Steel Columns and HPFRCC Coupling-Beam Damper Elements.

带钢柱和 HPFRCC 连梁阻尼器元件的创新混合剪力墙。

• 批准号: 9809712
• 负责人: Antoine Naaman
• 金额: $ 17.8万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9809712&HistoricalAwards=false
• 关键词: Innocative; Hybrid; Shear; Walls; Steel

9809712NaamanThe overall objective of this project is to study a new and innovative seismic shear wall systemfor use in composite steel-concrete structures. The wall is made from two edge steel columns connected by HPFRCCs coupling beam-damper elements. HPFRCCs (High Performance Fiber Reinforced Coment Composites) offer optional combinations of properties such as strength, toughness, energy, absorption, stiffness, ductility and damping resistance. Their implications in structural applications can be particularly beneficial, especially when seismic loads are considered. The new wall system is meant as a lateral load resisting element whereas the coupling beam-damper elements (CBDE) act as energy made from HPFRCC materials and are designed to dissipate energy by a shear-friction mechanism. They have an effective span-to-depth ratio smaller than that of regular coupling beams and have slotted and notched mid-section to insure the desired behavior. Advantages of the system include prefabrication, replaceability, durability, and life cycle cost effectiveness. The proposed wall system is very well suited for use with steel framed integrated with other construction materials and systems such as precast-prestressed concrete structures or case in place concrete structures.The main tasks of the research are: 1) to design, test, and evaluate the performance, of a number of coupling beam-damper elements (CBDE) subjected to simulated seismic loads, and 2) to develop a simple analytical model simulating their behavior; and 3) to draw some preliminary guidelines on their design in order to allow their implementation in the new shear-wall system under evaluation.

9809712Naaman 该项目的总体目标是研究一种用于钢-混凝土复合结构的新型创新抗震剪力墙系统。 该墙由两个边缘钢柱组成，通过 HPFRCC 耦合梁阻尼元件连接。 HPFRCC（高性能纤维增强复合材料）提供可选的性能组合，例如强度、韧性、能量、吸收性、刚度、延展性和阻尼阻力。 它们对结构应用的影响尤其有益，特别是在考虑地震荷载时。 新的墙体系统旨在作为横向荷载抵抗元件，而耦合梁阻尼器元件（CBDE）则充当由 HPFRCC 材料制成的能量，并设计为通过剪切摩擦机制耗散能量。 它们的有效跨深比小于常规连梁，并且中间部分有槽口和缺口，以确保所需的性能。 该系统的优点包括预制、可替换性、耐用性和生命周期成本效益。 所提出的墙体系统非常适合与其他建筑材料和系统（例如预制预应力混凝土结构或现浇混凝土结构）集成的钢框架使用。研究的主要任务是：1）设计、测试和评估许多承受模拟地震荷载的梁-阻尼器单元（CBDE）的性能，2）开发一个简单的分析模型来模拟它们的行为； 3) 制定一些初步设计指南，以便在评估中的新剪力墙系统中实施。