宋良龙, 郭彤. 腹板摩擦式自定心预应力混凝土框架的抗震性能研究[J]. 工程力学, 2014, 31(12): 47-56. DOI: 10.6052/j.issn.1000-4750.2013.05.0425
引用本文: 宋良龙, 郭彤. 腹板摩擦式自定心预应力混凝土框架的抗震性能研究[J]. 工程力学, 2014, 31(12): 47-56. DOI: 10.6052/j.issn.1000-4750.2013.05.0425
SONG Liang-long, GUO Tong. STUDY ON SEISMIC PERFORMANCE OF SELF-CENTERING PRESTRESSED CONCRETE FRAMES WITH WEB FRICTION DEVICES[J]. Engineering Mechanics, 2014, 31(12): 47-56. DOI: 10.6052/j.issn.1000-4750.2013.05.0425
Citation: SONG Liang-long, GUO Tong. STUDY ON SEISMIC PERFORMANCE OF SELF-CENTERING PRESTRESSED CONCRETE FRAMES WITH WEB FRICTION DEVICES[J]. Engineering Mechanics, 2014, 31(12): 47-56. DOI: 10.6052/j.issn.1000-4750.2013.05.0425

腹板摩擦式自定心预应力混凝土框架的抗震性能研究

STUDY ON SEISMIC PERFORMANCE OF SELF-CENTERING PRESTRESSED CONCRETE FRAMES WITH WEB FRICTION DEVICES

  • 摘要: 腹板摩擦式自定心预应力混凝土框架是一种新型的抗震结构体系。为分析其抗震性能,对自定心框架的数值模拟方法进行了研究,并利用梁柱节点的低周反复加载试验数据对数值模型进行了验证。由此建立起一榀4跨6层自定心框架的数值模型,并分别对自定心框架和传统现浇节点框架进行了非线性的静力分析和动力时程分析。分析结果表明:在多遇地震作用下,自定心框架和传统现浇框架具有相当的抗震性能;在罕遇地震作用下,传统的现浇节点框架残余变形较大,而自定心框架具有良好的能量耗散能力、自定心能力和抗弯能力,综合的抗震性能优于传统现浇节点框架结构。

     

    Abstract: The self-centering prestressed concrete (SCPC) frame with web friction devices is a novel seismic structure. To study the seismic performance of an SCPC frame, a numerical simulation method is investigated and validated via existing low cyclic loading tests on an SCPC beam-column onnection. A numerical model for a four-bay, six-story SCPC frame is developed, and nonlinear static and time-history analyses are conducted for SCPC frames as well as a traditional RC frame. The analysis results show that the seismic performance of the SCPC frame is similar to that of the traditional RC frame under frequent earthquakes. Subjected to the severe earthquakes, the traditional RC frame has significant residual drifts, while the SCPC frame shows desirable energy dissipation, self-centering, and moment-resisting capabilities. Thusly, compared to a conventional RC frame, an SCPC frame has a superior performance.

     

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