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部分剪力连接预应力连续组合梁抗弯性能试验研究
胡少伟,龚洪波
摘 要

 

胡少伟,龚洪波
(南京水利科学研究院, 南京 210024)
[摘要]为探究剪力连接程度对预应力钢混凝土连续组合梁的荷载跨中挠度特征、沿梁纵向的相对滑移分布规律、沿截面高度的应变分布、预应力增量变化以及连续梁的内力重分布过程、破坏机理与极限强度等的影响,进行了4根预应力钢混凝土连续组合梁的静载全过程试验研究。研究结果表明,随着剪力连接程度的降低,变形及界面滑移明显增大,承载能力有所降低,但降低程度小于剪力连接的降低程度,2根剪力连接程度系数为07的组合梁承载力比完全剪力连接组合梁均降低不到10%,随着剪力连接程度的降低连续梁相应弯矩的调幅值也会降低。
[关键词]部分剪力连接; 预应力; 连续组合梁; 抗弯性能; 试验研究
中图分类号:TU398+.7文献标识码:A文章编号:1002848X(2013)06006404
Experimental study on bending behaviors of prestressed steel concrete continuous
 composite beams with partial shear connection
Hu Shaowei, Gong Hongbo
(Nanjing Hydraulic Research Institute, Nanjing 210024, China)
Abstract:The static load of four prestressed steel concrete continuous composite beams was tested in order to research the effects of the degree of shear connection on the bending behaviors of prestressed steel concrete continuous composite beams, such as the loaddeflection characteristic, the loadslip along the span of beams, the strain distribution along the height of composite section, the loadstress increment of prestressed tendons, the interal force redistribution, the failure mode and the ultimate strength of the structure. The research results show that the deformation and interface slip increase and the bending capacity decreases with the reduction of shear connection, but it is less than the direct proportion of the reduction of shear connection. The bending capacity of two composite beams with the shear connection coefficient of 07 was less than 10 percent compared with the full shear connection. The bending moment modulation value of continuous composite beams also decreases with the reduction of shear connection.
Keywords:partial shear connection; prestressed; continuous composite beam; bending behavior; experimental study
*中央级公益性科研院所基本科研业务费重大项目(Y410006)。
作者简介:胡少伟,博士生导师,教授级高级工程师,Email: hushaowei@nhri.cn。
参考文献
[1]Eurocode 4 Design of composite steel and concrete structures part 11: general rules and rules for buildings[S].London:2004.
[2]日本建筑学会.钢骨钢筋混凝土结构计算标准及解说[M]. 冯乃谦,叶列平,陈延年,等,译. 北京:原子能出版社,1997.
[3]朱聘儒.钢混凝土组合梁设计原理[M].北京:中国建筑工业出版社,1989.
[4]胡少伟.组合梁抗扭分析与设计[M].北京:人民交通出版社,2005:1214.
[5]聂建国.钢混凝土组合梁结构试验、理论与应用[M].北京:科学出版社,2005.
[6]胡少伟, 叶祥飞.部分剪力连接预应力组合箱梁受弯性能试验研究[J].建筑结构学报, 2011, 32(10):153158.
[7]房贞政,郑则群.不同剪力连接程度预应力钢混凝土组合连续梁的试验研究[J].福州大学学报:自然科学版, 2002, 30(3):343348.
[8]胡汉林.预应力组合梁结构抗弯性能试验研究与理论分析[D].南京:南京水利科学研究院,2010.
[9]宗周红,郑则群,房贞政,等.体外预应力钢混凝土组合连续梁试验研究[J].中国公路学报,2002, 15(1):4449.
[10]刘长贵,史纲.预应力组合连续梁实验研究及分析[J].中国水运,2008,8(4):9798.
[11]胡少伟,聂建国.箱形钢混凝土组合梁的复合弯扭试验研究[J].建筑结构,2006,36(8):5459.
[12]聂建国,李绍敬,李晨光,等.预应力钢混凝土连续组合梁内力重分布试验研究[J]. 工业建筑,2003,33(12):1214.
[13]CHAPMAN J C, BALAKRISHNAN S. Experiments on composite beams[J].The Structural Engineer, 1964,42 (11): 7476.
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