预制混凝土工业建筑延性杆外连接系统的抗震性能

IF 0.9 4区 工程技术 Q4 CONSTRUCTION & BUILDING TECHNOLOGY PCI Journal Pub Date : 2023-01-01 DOI:10.15554/pcij68.1-03
D. Jung, T. Kang, D. J. Lee, Sanghee Kim, J. LaFave
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引用次数: 0

摘要

试验评估了外预制混凝土梁柱连接延性杆体系的抗震性能。考虑到各个方面(延性杆尺寸、预应力和弯曲/剪切能力),制作了五个与延性杆连接的全尺寸预制混凝土梁柱组件。对预制混凝土节点和两个整体钢筋混凝土节点进行了横向循环加载试验。尽管它们的横向刚度相对较低,但大多数预制混凝土连接具有足够的弯矩能力,其峰值弯矩约为层间位移的3%至4%。预应力筋能有效提高混凝土预制节点的弯矩和抗剪强度,减少延性杆的滑移。预制混凝土试件总体抗震性能良好,符合美国混凝土学会规定的验收标准。试验结果表明,在设计延性杆和高强度螺纹杆时,需要仔细考虑引起预制混凝土连接的稳定弯曲响应。
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Seismic performance of a ductile rod exterior connection system for precast concrete industrial buildings
The seismic performance of a ductile rod system for exterior precast concrete beam-to-column connections was experimentally evaluated. Five full-scale precast concrete beam-to-column subassemblies connected with ductile rods were fabricated, considering various aspects (ductile rod size, prestressing, and flexural/shear capacities). Lateral cyclic loading tests were conducted for the precast concrete connections along with two monolithic reinforced concrete connections. Despite their relatively lower lateral stiffness, most precast concrete connections showed sufficient moment capacities with peak moments at approximately 3% to 4% interstory drifts. The prestressing tendons were effective at enhancing moment and shear strengths of the precast concrete connections, as well as in reducing slip of the ductile rods. The precast concrete specimens generally showed satisfactory seismic performance, fulfilling acceptance criteria specified by the American Concrete Institute. The test results demonstrated that careful considerations are required in the design of ductile rods and high-strength threaded bars to induce stable flexural responses of the precast concrete connections.
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来源期刊
PCI Journal
PCI Journal 工程技术-结构与建筑技术
自引率
9.10%
发文量
15
审稿时长
>12 weeks
期刊最新文献
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