工程力学 ›› 2019, Vol. 36 ›› Issue (3): 214-223.doi: 10.6052/j.issn.1000-4750.2017.12.0991

• 土木工程学科 • 上一篇    下一篇

型钢混凝土空腹叠合梁受剪承载力试验研究

于云龙1, 杨勇1, 薛亦聪1, 刘亚平2, 蒋雪雅1   

  1. 1. 西安建筑科技大学土木工程学院, 陕西, 西安 710055;
    2. 中国启源工程设计研究院有限公司, 陕西, 西安 710018
  • 收稿日期:2017-12-28 修回日期:2018-04-19 出版日期:2019-03-29 发布日期:2019-03-16
  • 通讯作者: 于云龙(1989-),男,陕西西安人,工程师,工学博士,从事预制装配型钢混凝土结构研究(E-mail:yyllyp126@sina.com). E-mail:yyllyp126@sina.com
  • 作者简介:杨勇(1976-),男,江西吉安人,教授,工学博士,博导,主要从事钢-混凝土组合结构、结构抗震加固、预制装配结构研究(E-mail:yyhhp2004@163.com);薛亦聪(1992-),男,陕西西安人,博士生,从事预制装配型钢混凝土结构研究(E-mail:xjdxyc@foxmail.com);刘亚平(1988-),女,河南洛阳人,工程师,工学硕士,从事装配式工业厂房研究(E-mail:xjdliuyaping@163.com);蒋雪雅(1991-),女,河南商丘人,硕士生,从事预制装配型钢混凝土结构研究(E-mail:1241476144@qq.com)
  • 基金资助:
    国家自然科学基金项目(51478287,51578443);国家重点研发计划项目(2017NYFC0703404)

EXPERIMENT STUDY ON THE SHEAR CAPACITY OF STEEL REINFORCED CONCRETE HOLLOW COMPOSITE BEAMS

YU Yun-long1, YANG Yong1, XUE Yi-cong1, LIU Ya-ping2, JIANG Xue-ya1   

  1. 1. School of Civil Engineering, Xi'an University of Architecture & Technology, Shaanxi, Xi'an 710055, China;
    2. China Qiyuan Engineering Corporation, Shaanxi Xi'an 710018, China
  • Received:2017-12-28 Revised:2018-04-19 Online:2019-03-29 Published:2019-03-16

摘要: 为更加深入研究型钢混凝土叠合梁的受剪机理,提出更为优化的截面形式,该文完成了10个足尺型钢混凝土叠合梁在单调集中荷载作用下的静力试验研究。通过考察剪跨比、截面形式(空腹和实腹)等参数对受剪性能的影响,着重研究了足尺型钢混凝土空腹叠合梁的受剪性能。结合试验结果对各试件的裂缝形态、破坏特征、承载能力、变形等性能进行了分析研究。采用桁架-拱模型并基于变形协调条件将桁架、拱和型钢三者对受剪承载力的作用相结合,建立了适用于型钢混凝土叠合梁的受剪承载力计算方法。结果表明:型钢混凝土空腹叠合梁与实腹叠合梁具有相似的受剪性能和破坏形态,承载力随剪跨比的增大而减小,试件整体性良好;采用JGJ 2016和YB 9082-2006计算的受剪承载力离散型偏大,该文建立的修正桁架-拱模型计算值与试验结果吻合较好。

关键词: 装配式结构, 型钢混凝土空腹梁, 受剪承载力, 试验研究, 桁架-拱理论, 计算方法

Abstract: In order to investigate the shear mechanism of steel reinforced concrete composite beams and further optimize their section shapes, a static experiment with ten full-scaled specimens was carried out. The developments of strain, crack propagation, failure mode, deformation and shear capacity were thoroughly explored and the effects of aspect ratio and section shape (solid and hollow) were critically examined. On the basis of the test results, a proposed truss-arch model, which takes the compatibility of a truss, an arch and steel shape into account, was applied to establish the calculation method for the shear capacity of steel reinforced concrete hollow composite beams. The results indicated that: the specimens with solid section and hollow section both suffered similar failure modes and exhibited similar shear bearing capacities, and the shear bearing capacity decreased with the increase of the aspect ratio. The shear capacity calculated by the JGJ 138-2016 and YB 9082-2006 shows high discreteness. The shear strengths obtained by the proposed method (compatible truss-arch model) agreed well with those from the experiment.

Key words: precast structure, steel reinforced concrete hollow beams, shear capacity, experimental study, truss-arch model, calculation method

中图分类号: 

  • TU398.9
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