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1.哈尔滨工业大学结构工程灾变与控制教育部重点实验室,黑龙江 哈尔滨 150090
2.哈尔滨工业大学土木工程智能防灾减灾工业和信息化部重点实验室,黑龙江 哈尔滨 150090
Received:16 September 2021,
Revised:2021-09-20,
Published:15 August 2021
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欧进萍,武沛松,关新春.大位移摩擦摆底层和多层隔震韧性结构[J].防灾减灾工程学报,2021,41(04):657-676.
OU Jinping,WU Peisong,GUAN Xinchun.Seismic Resilient Base Isolated Structure Equipped with Super⁃Large Displacement Friction Pendulum Bearing and Isolated Structure Equipped with Multi⁃Super⁃Large Displacement Friction Pendulum Bearing[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(04):657-676.
欧进萍,武沛松,关新春.大位移摩擦摆底层和多层隔震韧性结构[J].防灾减灾工程学报,2021,41(04):657-676. DOI: 10.13409/j.cnki.jdpme.202109016.
OU Jinping,WU Peisong,GUAN Xinchun.Seismic Resilient Base Isolated Structure Equipped with Super⁃Large Displacement Friction Pendulum Bearing and Isolated Structure Equipped with Multi⁃Super⁃Large Displacement Friction Pendulum Bearing[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(04):657-676. DOI: 10.13409/j.cnki.jdpme.202109016.
结构韧性性能的目标是:在极罕遇地震作用时,结构不发生严重破坏;地震结束后,结构能恢复预期状态,进而恢复建筑功能的性能。隔震是结构韧性性能实现的关键技术,然而,结构隔震层位移响应超过允许值,引发隔震支座破坏,导致其减震性能失效,成为制约该类结构韧性性能目标实现的关键难题。本文以结构层作为滑动面,主体结构整体或滑动面之间的部分结构作为滑动块,提出大位移摩擦摆新型结构,通过隔震层的不同位置以及数量,构建大位移摩擦摆底层和多层隔震结构体系。分别建立该统一分析模型、探明其减震机理证明其良好减震性能,实现韧性结构性能目标。开展结构设计实现和韧性性能评价研究,表明了主体结构、非结构构件和大位移摩擦摆(支座和结构层)等地震损伤和恢复能力。本研究为韧性结构发展提供了结构新体系和关键发展方向。
The basic performance objectives of structural resilience are that structures can survive very-rare earthquakes and the state of structures and building functions are recoverable. Isolation is a key technology to achieve structural resilience. However, when the response of the isolation layer exceeds its limit, it will causes damage on isolation bearing and the loss of seismic performance. This is the key that constrains the realization of structural resilience. Super-Large Displacement Friction Pendulum Bearings (SLDFPB) whose whole layer acts as a sliding surface and whole superstructure or several frames act as sliding blocks is studied. The new isolated structural system with SLDFPB is constructed through isolation layers located in different positions. A unified analysis model for the structure system is established to explore its damping mechanism and prove its damping performance, so as to achieve structural resilience. The study on structural design method and the evaluation on resilience show seismic damage mitigation and good recovery capacity of the main structure, non-structural members and Super-Large Displacement Translation Friction Pendulum Bearing (SLDTFPB) (bearing and structure layer). This study provides a new structural system and indicates a key development direction for resilience structures.
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