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

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Abstract

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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

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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

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References(15)

References

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