Experimental and Numerical Research on Uplift-Restricted and Slip-Permitted Screw-Shaped Connectors

다국어 초록 (Multilingual Abstract)

Improving mechanical performance of the negative moment regions of continuous composite beams is essential for composite beam bridges. Uplift-restricted and slip-permitted (URSP) screw-shaped connectors can enhance the crack resistance of a concrete slab through free slip between the concrete slab and the steel beam. Furthermore, URSP screw-shaped connectors are more adaptable to the requirements of rapid construction than URSP T-shaped connectors. To investigate the slip and mechanical behavior of URSP screw-shaped connectors, nine push-out tests with various parameters were conducted. In these tests, the thickness of the foam sleeve wrapped outside the screw exerted a highly signifi cant eff ect on free slip performance.
A refi ned 3D nonlinear fi nite element model with the foam’s constitutive model was established using ABAQUS.
The stress mechanism and failure modes of the FE models were analyzed. Lastly, to estimate the slip performance of URSP screw-shaped connectors, an equation with a simple form was proposed via mechanism analysis and a regression method.

참고문헌 (Reference)

1 Nie, J. G., "Uplift-restricted and slip-permitted T-shape connectors" 20 : 04014073-, 2015

2 Mahbube Subhani ; Anastasia Globa ; Jules Moloney, "Timber-FRP composite beam subjected to negative bending" 국제구조공학회 73 (73): 353-365, 2020

3 Nie, J. G., "Technological development and engineering applications of novel steel-concrete composite structures" 13 : 1-14, 2019

4 Zhuang, B., "Study on the composite mechanism of large rubber-sleeved stud connector" 211 : 869-884, 2019

5 Nie, X., "Study on steel-concrete continuous composite bridge connected by new type of steelconcrete connector without shear resistance" 44 : 95-100, 2012

6 Nie, J. G., "Steel-concrete composite structure bridge" China Communications Press Co., Ltd 2011

7 Zhang, Z., "Static and fatigue behavior of rubbersleeved stud shear connectors as part of field-cast ultra-high performance concrete connections" 13 : 2269-, 2020

8 MOHURD, "Standard for test method of performance on ordinary fresh concrete. GB/T 50080-2016"

9 Gao, Y. M., "Research on crack resistance of prefabricated steel truss-concrete composite beam" 30 (30): 175-182, 2017

10 Duan, L. L., "Research on application of uplift-restricted slip-permitted(URSP)connectors in steelconcrete composite frames" 9 : 2235-, 2019

11 Yinghao Zhao ; Xiaolin Zhong ; Loke Kok Foong, "Predicting the splitting tensile strength of concrete using an equilibrium optimization model" 국제구조공학회 39 (39): 81-93, 2021

12 Lee, J., "Plastic-damage model for cyclic loading of concrete structures" 124 : 892-900, 1998

13 Lin, J. P., "Particle swarm optimization-based finite-element analyses and designs of shear connector distributions for partial-interaction composite beams" 24 : 04019017-, 2019

14 Fang, K. T., "Orthogonal and uniform experimental design" Science Press 2001

15 Nie, J. G., "New technique and application of uplift-restricted and slip-permitted connection" 7-14, 2015

16 Jiang, Y., "Investigation on partially concrete encased composite beams under hogging moment" 1-10, 2016

17 Zhang, Y., "Flexural responses of steel-UHPC composite beams under hogging moment" 206 : 1-15, 2020

18 Qi, J., "Flexural behavior of steel-UHPFRC composite beams under negative moment" 24 : 640-649, 2020

19 Abe, H., "Flexible shear connectors for railway composite girder bridges" ASCE 71-80, 2002

20 Linli Duan ; Hongbing Chen ; Xin Nie ; Sanwei Han, "Experimental study on steel-concrete composite beams with Uplift-restricted and slip-permitted screw-type (URSP-S) connectors" 국제구조공학회 35 (35): 261-278, 2020

21 Jiang, A., "Experimental study of innovative Steel-concrete composite beams under hogging moment" 16 (16): 877-886, 2012

22 Zhu, L., "Experimental and numerical study of curved SFRC and ECC composite beams with various connectors" 155 : 106938-, 2020

23 Fan, J., "Experimental and analytical research on the flexural behavior of steel-ECC composite beams under negative bending moments" 210 : 110309-, 2020

24 El-Zohairy, A., "Experimental and FE parametric study on continuous steel-concrete composite beams strengthened with CFRP laminates" 157 : 885-898, 2017

25 Yinghao Zhao ; Hossein Moayedi ; Mehdi Bahiraei ; Loke Kok Foong, "Employing TLBO and SCE for optimal prediction of the compressive strength of concrete" 국제구조공학회 26 (26): 753-763, 2020

26 Yinghao Zhao ; Chengzong Bai ; Chengyong Xu ; Loke Kok Foong, "Efficient metaheuristic-retrofitted techniques for concrete slump simulation" 국제구조공학회 27 (27): 745-759, 2021

27 Sun, Q., "Effect of longitudinal reinforcement and prestressing on stiffness of composite beams under hogging moments" 100 : 1-11, 2014

28 Ding, Y., "Developments and behaviors of slip-released novel connectors in steel-concrete composite structures" 15 : 30-36, 2019

29 P J R., "Composite structures of steel and concrete: Beams, slabs, columns, and frames for buildings" University of Warwick 2008

30 "ABAQUS Documentation. Version 6.10"

31 Lubliner, J., "A plastic-damage model for concrete" 25 : 299-326, 1989

32 Chen, S., "A comparative study of continuous steel-concrete composite beams prestressed with external tendons : Experimental investigation" 65 : 1480-1489, 2009