混凝土加强波纹钢组合板抗弯刚度及承载能力

doi:10.13229/j.cnki.jdxbgxb.20221405

摘要/Abstract

摘要：

为了增强单层波纹钢板（CSP）的承载能力，在波纹钢板上焊接栓钉作为剪力连接件，然后在波纹钢板上浇筑混凝土层，二者共同受力。对3块混凝土加强波纹钢板组合构件进行了静力加载，分析了不同混凝土厚度对构件受力性能的影响，并验证了焊接栓钉作为剪力连接件的可靠性。试验结果表明：相较于单层波纹钢板，组合板的承载能力提高了60%~111%，并且其抗弯刚度是单层波纹钢板的4倍以上。基于波纹钢板-混凝土（CSPC）组合板的受力性能，提出了适用于波纹钢组合板弯曲刚度的计算方法。随后通过ABAQUS软件建立了数值模型并验证了其可靠性。本文研究结果为混凝土加强波纹钢组合结构在大跨桥涵中的应用提供了设计参考。

关键词: 桥涵工程, 组合结构, 波纹钢板, 受弯性能

Abstract:

In order to enhance the load-bearing capacity of single-layer corrugated steel plates （CSP）， bolts were welded on the CSP as shear connectors， and then a concrete layer was poured on the CSP to jointly bear the force. Three concrete-reinforced corrugated steel plate assemblies were statically loaded to analyze the effect of different concrete thicknesses on the force behavior of the structure， which verified the reliability of welded studs as shear connectors. The test results show that compared with a single corrugated steel plate， the load-bearing capacity of the composite slab was increased by 60%-111%， and flexural stiffness was more than 4 times. Based on the force performance of corrugated steel plate-concrete （CSPC） composite slab， the calculation method applicable to the flexural stiffness of corrugated steel composite slab was proposed. The numerical model were established in the ABAQUS software to verify the reliability. This study provides design references for the application of concrete reinforced corrugated steel composite structures in long span bridges and culverts.

Key words: bridge engineering, composite structure, corrugated steel plate, flexural behavior

中图分类号:

TU398

刘保东,李芳,王晓溪,高猛. 混凝土加强波纹钢组合板抗弯刚度及承载能力[J]. 吉林大学学报(工学版), 2024, 54(9): 2502-2510.

Bao-dong LIU,Fang LI,Xiao-xi WANG,Meng GAO. Flexural stiffness and bearing capacity of corrugated steel plate composite structures reinforced by concrete[J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(9): 2502-2510.

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试件编号	h/mm	h_c/mm	b/mm
CSP0	55	0	600
CP1	115	60	600
CP2	135	80	600
CP3	155	100	600

种类	f_c /MPa	E_c/GPa	f_y/MPa	f_u/MPa	E_s/GPa
混凝土	44.9	33.6	—	—	—
钢材	—	—	444.94	513.32	206

试件编号	P_s/kN	P_u/kN	M_u/（kN?m^-1）	M_p/（kN?m^-1）	M_u / M_p	ε_c/10^-3	ε_sc/10^-3	ε_st/10^-3
CSP0	—	99.00	19.80	19.13	1.04	—	—	—
CP1	107.59	158.96	31.79	48.56	0.65	-1.67	-1.35	2.46
CP2	100.46	185.96	37.19	62.32	0.60	-1.77	-2.28	4.82
CP3	171.71	209.47	41.89	65.00	0.64	-1.09	-1.34	2.46

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