RESEARCH ON MECHANICAL PROPERTIES OF STEEL-CONCRETE COMPOSITE BEAMS WITH HIGH-STRENGTH BOLT CONNECTORS

SHENG Yongjun

doi:10.13204/j.gyjzG21061514

Volume 51 Issue 9

Jan. 2022

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2021 > 51(9): 121-126

SHENG Yongjun. RESEARCH ON MECHANICAL PROPERTIES OF STEEL-CONCRETE COMPOSITE BEAMS WITH HIGH-STRENGTH BOLT CONNECTORS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 121-126. doi: 10.13204/j.gyjzG21061514

Citation:

SHENG Yongjun. RESEARCH ON MECHANICAL PROPERTIES OF STEEL-CONCRETE COMPOSITE BEAMS WITH HIGH-STRENGTH BOLT CONNECTORS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 121-126. doi: 10.13204/j.gyjzG21061514

SHENG Yongjun. RESEARCH ON MECHANICAL PROPERTIES OF STEEL-CONCRETE COMPOSITE BEAMS WITH HIGH-STRENGTH BOLT CONNECTORS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 121-126. doi: 10.13204/j.gyjzG21061514

Citation:

PDF( 7185 KB)

RESEARCH ON MECHANICAL PROPERTIES OF STEEL-CONCRETE COMPOSITE BEAMS WITH HIGH-STRENGTH BOLT CONNECTORS

doi: 10.13204/j.gyjzG21061514

SHENG Yongjun

Zhejiang Jiaogong International Engineering Co., Ltd., Hangzhou 310051, China

Received Date: 2021-06-15
Available Online: 2022-01-11

Abstract

Abstract

In order to study the mechanical properties of steel-concrete composite beams with high-strength bolt connectors, single-point static loading was conducted on 4 composite beam specimens by changing the pre-tightening forces of high-strength bolts and the spacing of end bolts. The load-deflection curve, the load-slip curve and the strain curve along the height of the section were obtained from the experiment, and then the influence of the two variables on the flexural bearing capacity, initial stiffness and cross-sectional strain of the composite beam was analyzed. The test results showed that the test beam subjected to concentrated loads was typical bending failure, reducing the spacing of the end bolts could improve the bearing capacity and initial stiffness of the composite beam and increasing the pre-tightening force could also increase the initial stiffness of the composite beam, but had little effect on the ultimate bearing capacity.
- high-strength bolt connector,
- steel-concrete composite beam,
- load-slip curve,
- bearing capacity,
- initial stiffness

FullText(HTML)

References(15)

References

[1]	赵伟,张征文. 钢结构桥梁[M].北京:人民交通出版社, 2015.
[2]	马莹,宋伟豪,王潇,等.基于公路规范的钢-GFRP-混凝土组合梁桥受力性能分析[J].中外公路,2020,40(6):83-87.
[3]	严鑫,陈驹.新型可替换式组合梁连接件剪切刚度研究[J].低温建筑技术, 2019, 41(1):14-18.
[4]	刘中良.装配式组合梁高强螺栓连接件抗剪性能试验研究[D].湘潭:湘潭大学, 2017.
[5]	龚志刚,党志杰.用高强度螺栓作为结合梁桥的剪力连接件[J].世界桥梁,2003(2):56-63.
[6]	KWON G, ENGELHARDT M D, KLINGNER R E. Strengthening Existing Non-Composite Steel Girder Bridges by the Use of Post-Installed Shear Connectors[J]. IABSE Congress Report, 2008, 17(19):198-199.
[7]	KWON G, ENGELHARDT M D, KLINGNER R E. Behavior of Post-Installed Shear Connectors Under Static and Fatigue Loading[J]. Steel Construction, 2010, 66(4):532-541.
[8]	KWON G, ENGELHARDT M D, KLINGNER R E. Experimental Behavior of Bridge Beams Retrofitted with Post-Installed Shear Connectors[J]. Journal of Bridge Engineering, 2011, 16(4):536-545.
[9]	LIU X P, MARK B A, CHEN Q J. Finite Element Modelling of Steel-Concrete Composite Beams with High-Strength Friction-Grip Bolt Shear Connectors[J]. Finite Elements in Analysis and Design, 2016,108:54-65.
[10]	ATAEI A, BRADFORD M A, LIU X. Experimental Study of Composite Beams Having a Precast Geopolymer Concrete Slab and Deconstructable Bolted Shear Connectors[J]. Engineering Structures, 2016, 114(1):1-13.
[11]	LIU X, BRADFORD M A, ATAEI A. Flexural Performance of Innovative Sustainable Composite Steel-Concrete Beams[J]. Engineering Structures, 2017, 130(1):282-296.
[12]	ZHANG Y J, CHEN B, LIU A, et al. Experimental Study on Shear Behavior of High Strength Bolt Connection in Prefabricated Steel-Concrete Composite Beam[J]. Composites Part B:Engineering, 2019, 159(15):481-489.
[13]	张勇,袁波,王健康.新型装配式螺栓连接件极限承载力研究[J].贵州大学学报(自然科学版),2019,36(1):112-117.
[14]	ZHAO W, LU S Q, JING X Y. Shear Performance of High-Strength Bolt Connector Considering Different Pad and Bolt Hole[J]. Structures,2020,28(10):1219-1230.
[15]	中华人民共和国住房和城乡建设部. 金属材料拉伸试验第1部分:室温试验方法:GB/T 228.1-2010[S]. 北京:中国标准出版社, 2017.