腹板开洞钢-混凝土连续组合梁受剪性能试验研究

李龙起; 周东华; 廖文远; 陈旭; 姚凯程

doi:10.3969/j.issn.0258-2724.2015.04.012

腹板开洞钢-混凝土连续组合梁受剪性能试验研究

doi: 10.3969/j.issn.0258-2724.2015.04.012

基金项目:

国家自然科学基金资助项目(51268022)

国家青年科学基金资助项目(51308269)

详细信息

作者简介:
李龙起(1986-),男,讲师,博士,研究方向为组合结构,E-mail:lilongqiqingdao@sina.com

计量
- 文章访问数: 1099
- HTML全文浏览量: 87
- PDF下载量: 290
- 被引次数: 0
出版历程
- 收稿日期: 2014-03-22
- 刊出日期: 2015-08-25

Experimental Study on Shear Bearing Behavior of Continuous Steel-Concrete Composite Beams with Web Openings

摘要

摘要: 为研究腹板开洞连续组合梁的受剪性能,以配筋率和混凝土板厚为变量参数,对5根腹板开洞连续组合梁进行了两点单调对称集中加载试验,采用剪力分离方法对应变试验数据进行计算,得到组合梁钢梁和混凝土板承担的剪力.试验结果表明:腹板开洞不仅降低了连续组合梁的刚度和承载能力,而且引起洞口区域混凝土板和钢梁截面的竖向剪力重分布,剪力主要通过洞口上方的混凝土板来承担,占到总剪力的 85%~90%;洞口区域不再符合平截面假定,最终连续组合梁洞口发生剪切破坏,组合梁丧失承载能力;增加混凝土板厚度和截面配筋率可以提高连续组合梁的承载和变形能力,并可以用来进行洞口区域的补强.
- 连续组合梁 /
- 腹板开洞 /
- 受剪性能 /
- 承载力 /
- 试验研究
Abstract: In order to investigate the shear bearing behavior of continuous steel-concrete composite beams with web openings, five continuous composite beams with web openings under two monotonic symmetric concentrated loads were tested using the thickness and reinforcement ratio of slabs as variables. The shear separation method was introduced to calculate the shear stress borne by concrete slabs and steel beams of composite beams. The test results show that web openings not only decrease the stiffness and ultimate load-carrying capacity but also give rise to the redistribution of vertical shear force of steel beams and concrete slabs; that is, the concrete slab bears 85%-90% of the total cross-section shear at the web opening region. The plane hypothesis is not valid in the web opening area. The failure mode is the shear failure of concrete slab in the region near the opening. In addition, the ultimate load-carrying capacity and deformability of continuous composite beams can be increased by increasing the thickness and reinforcement ratio of a concrete slab, which can be used for enhancement of the web opening area.
- continuous composite beams /
- web openings /
- shear bearing behavior /
- load-carrying capacity /
- experimental study

HTML全文

参考文献(38)

周东华,孙丽莉,樊江,等. 组合梁挠度计算的新方法:有效刚度法

操礼林,石启印,王震,等. 高强U形外包钢-混凝土组合梁受弯性能

[J]. 西南交通大学学报,2011,46(4): 541-546. ZHOU Donghua, SUN Lili, FAN Jiang, et al. Effective stiffness method for calculation of deflection of composite beams

石启印,黄周瑜,李爱群,等. U型外包钢-混凝土组合梁延性的试验研究

[J]. Journal of Southwest Jiaotong University, 2011, 46(4): 541-546.

雷宇,赵雷,黎曦,等. 大跨度组合梁斜拉桥极限承载力影响因素

[J]. 西南交通大学学报,2014,49(1): 72-78. CAO Lilin, SHI Qiyin, WANG Zhen, et al. Bending performances of high-strength steel-encased composite beams

JU Y K, CHUN S C, KIM S D. Flexural test of a composite beam using asymmetric steel section with web openings

聂建国,余志武. 钢-混凝土组合梁在我国的研究与应用

[J]. Journal of Southwest Jiaotong University, 2014, 49(1): 72-78.

CHEN Tao, GU Xianglin, LI Hua. Behavior of steel concrete composite cantilever beams with web openings under negative moment

[J]. 西南交通大学学报,2008,43(2): 206-212. SHI Qiyin, HUANG Zhouyu, LI Aiqun, et al. Experimental investigation on ductility of U-section steel-encased concrete composite beams

王鹏,周东华,王永慧,等. 腹板开洞钢-混凝土组合梁抗剪承载力试验研究

ZHOU Donghua. Auswirkung der Verformbarkeit der Verbundmittel und Teilverbundes auf das Tra gverhalten und die Tragfhigkeit von Verbun dtrgern mit Querschnittssprngen

[J]. Journal of Southwest Jiaotong University, 2008, 43(2): 206-212.

ZHOU Donghua. Beitrag zum Tragverhalten und zur Entwicklung der Rechenmodelle von Verbundtrgern mit Stegffnungen

[J]. 西南交通大学学报,2009,44(6): 812-816. LEI Yu, ZHAO Lei, LI Xi, et al. Influencing factors of ultimate load-bearing capacity of long-span composite girder cable-stayed bridge

王鹏,周东华,王永慧,等. 带加劲肋腹板开洞组合梁极限承载力理论研究

[J]. Journal of Southwest Jiaotong University, 2009, 44(6): 812-816.

ClAWSON W C, DARWIN D. Test of composite beams with web openings

REDWOOD R G, POUMBOURAS G. Analysis of composite beams with web openings

[J]. Journal of Structural Engineering, 2009, 135: 448-458.

CHUNG K F, LIU C H, KO A C H. Steel beams with large openings of various shapes and sizes: an empirical design method using a generalized moment-shear interaction curve

聂建国,陈林,肖岩. 钢-混凝土组合梁抗剪研究中的塑性分析方法

[J]. 土木工程学报,1999,32(2): 3-8. NIE Jianguo, YU Zhiwu. Research and practice of composite steel-concrete beams in China

[J]. China Civil Engineering Journal, 1999, 32(2): 3-8.

[J]. International Journal of Steel Structures, 2011, 11(1): 39-49.

[J]. 工程力学,2013,30(3): 297-305. WANG Peng, ZHOU Donghua, WANG Yonghui, et al. Experimental study on shear strength of steel-concrete composite beams with web opening

[J]. Engineering Mechanics, 2013, 30(3): 297-305.

[M]. : Shaker-Verlag, 2003: 71-85.

[D]. Kaiserslautern: Universitt Kaiserslautern, 1998.

[J]. 工程力学,2013,30(5): 138-146. WANG Peng, ZHOU Donghua, WANG Yonghui, et al. Theoretical study on ultimate capacity of composite beams with reinforced web opening

[J]. Engineering Mechanics, 2013, 30(5): 138-146.

[J]. Journal of Structure Engineering, 1982, 108(3): 145-162.

[J]. Journal of Structure Engineering, 1984, 110(9): 1949-1958.

[J]. Journal of Constructional Steel Research, 2003, 59(9): 1177-1200.

[J]. 工程力学,2002,19(5): 48-51. NIE Jianguo, CHEN Lin, XIAO Yan. Plastic analysis of shear behavior of composite steel-concrete beams

[J]. Engineering Mechanics, 2002, 19(5): 48-51.

施引文献

附加材料(0)

访问统计