（江苏大学土木工程与力学学院， 镇江 212013）

［摘要］为研究静载作用下高强外包钢高强混凝土简支组合梁的受弯性能，对5根简支梁进行跨中两点对称荷载作用下的试验，加载方式为单调静力加载。试件主要变化参数为混凝土强度、钢板强度以及组合梁截面尺寸。试验测量内容主要为竖向加载荷载、挠度、截面应变等，研究了组合梁的破坏形态、荷载挠度曲线、荷载应变曲线以及应变沿截面高度的分布。试验结果表明，试件均发生典型的弯曲破坏，高强钢与高强混凝土通过栓钉连接可以表现出良好的整体工作性能。可为高强外包钢高强混凝土组合梁在实际工程中的应用提供试验依据。

［关键词］高强外包钢高强混凝土组合梁； 受弯性能； 静载试验

中图分类号：TU398， TU317.1    文献标识码：A    文章编号：1002-848X(2015)03-0039-05

Experimental study on flexural performance of highstrength steelencased and

highstrength concrete simplysupported composite beams

Ren Guanyu， Shi Qiyin

 (Faculty of Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China)

Abstract:In order to study the flexural performance of highstrength steelencased and highstrength concrete simplysupported composite beam under static load, five simplysupported beams were tested. The five beams were all fullshearconnected, and sustained two symmetrical monotonic static loads in the middle span. The main changed parameters included the steel and concrete strength and the crosssection size of steel beam. The main test measurements included vertical load, deflection and crosssection strain. The failure mode, loaddeflection curve, loadstrain curve and strain distribution along the height of the crosssection were studied. The test results show that the specimens all suffer typical flexural failure. The highstrength steel and highstrength concrete exhibit well integrated working performance with the bolt connection. It provided the experimental basis for the application of highstrength steelencased and highstrength concrete composite beams in practical engineering.

Keywords:highstrength steelencased and highstrength concrete composite beam; flexural performance; static load test

作者简介：任冠宇，硕士研究生，Email：1014265866@qq.com。

参考文献

［1］石启印,范旭红,WOLFGANG FRONCKE.新型U形外包钢钢筋砼T形截面组合梁的试验［J］.工程力学,2007,24(12): 8892.

［2］聂建国,王洪全,谭英.钢高强混凝土组合梁的试验研究［J］.建筑结构学报,2004,25(1):5862.

［3］聂建国,李红有,唐亮.高强钢混凝土组合梁受弯性能试验研究［J］.建筑结构学报,2009,30(2): 6469.

［4］石启印,蔡建林,陈倩倩，等.新型外包钢混凝土组合梁抗扭的试验及分析［J］.工程力学,2008,25(12):162170.

［5］聂建国,刘明,叶列平.钢混凝土组合结构［M］.北京:中国建筑工业出版社,2005.

［6］杜德润,李爱群,陈丽华.外包钢混凝土组合简支梁试验研究［J］.建筑结构,2006,36(4):6467.

［7］BAN HUIYONG, BRADFORD MARK A.  Flexural behaviour of composite beams with high strength steel［J］.Engineering Structures, 2013，56:11301141.

［8］DUY LIEM NGUYEN， DONG JOO KIM， GUM SUNG RYU， et al. Size effect on flexural behavior of ultrahighperformance hybrid fiberreinforced concrete［J］. Composites Part B: Engineering, 2013，45（1）:11041116.

［9］GB 50010—2010混凝土结构设计规范［S］.北京:中国建筑工业出版社,2011.

［10］李家康,王巍.高强混凝土的几个基本力学性能指标［J］.工业建筑,1997,27(8):5054.

［11］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,2014,49(1):7278.

［12］葛军.基于试验的高强钢混凝土组合梁计算理论研究和有限元分析［D］.合肥：合肥工业大学,2010.

［13］车顺利.型钢高强高性能混凝土梁的基本性能及设计计算理论研究［D］.西安:西安建筑科技大学,2008.

［14］郑山锁,李磊,邓国专.型钢高强高性能混凝土梁粘结滑移行为研究［J］.工程力学,2009,26(1): 104112.