冷弯薄壁型钢增强复合材料夹层结构压缩性能试验研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (10): 33-38.

冷弯薄壁型钢增强复合材料夹层结构压缩性能试验研究

张富宾¹, 徐靖¹, 刘伟庆², 方海²

1.江苏大学土木工程与力学学院,镇江212000;
2.南京工业大学土木工程学院,南京210009

收稿日期:2018-07-31 出版日期:2018-10-28 发布日期:2018-10-28
作者简介:张富宾(1987-),男,博士,讲师,主要从事结构复合材料方面的研究,zhangfubin@ujs.edu.cn。
基金资助:
国家自然科学基金项目(51708255);江苏省自然科学基金项目(BK20160523);江苏大学科青年人才项目(16JDG016)

EXPERIMENTAL STUDY ON COMPRESSIVE BEHAVIOR OF A NOVEL GFRP-COLD FORMED STEEL COMPOSITE SANDWICH STRUCTURE

ZHANG Fu-bin¹, XU Jing¹, LIU Wei-qing², FANG Hai²

1.Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212000, China;
2.College of Civil Engineering, Nanjing Tech University, Nanjing 210009, China

Received:2018-07-31 Online:2018-10-28 Published:2018-10-28

摘要/Abstract

摘要： 冷弯薄壁型钢增强复合材料夹层结构(GCS structure)由玻璃纤维增强复合材料(GFRP)面板、轻质泡沫和冷弯薄壁型钢组成,即在轻质泡沫芯材内部嵌入冷弯薄壁型钢增强体,提高其Z向压缩刚度和压缩强度。通过平压试验研究了该新型夹层结构的压缩破坏模式和受力机理,并与传统复合材料夹层结构进行对比,分析了不同参数对其压缩刚度、强度、破坏模式及吸能能力的影响。结果表明:相对于传统复合材料夹层结构,该新型夹层结构的压缩刚度和强度分别提高了216.3%和115.8%,但其能量吸收率降低了20.8%;冷弯薄壁型钢增强复合材料夹层结构比压缩强度和比压缩模量最高;铆钉对该新型结构压缩性能影响不大。

关键词: 冷弯薄壁型钢, 纤维增强复合材料, 夹层结构, 压缩刚度, 压缩强度, 吸能能力

Abstract: The GFRP-Cold Formed Steel composite sandwich structure (GCS structure) is composed of glass fiber reinforced polymer (GFRP) skins, light-weight PU foam core and cold formed steel (profiled steel sheet). The profiled steel sheet was embedded into the PU foam core to improve its Z-direction compression stiffness and strength. Compression tests were carried out to explore the compressive behavior of the GCS structures. By comparing to the conventional sandwich structures, the effects of the different parameters on the stiffness, ultimate compressive strength, failure modes and the energy absorption capacity of the novel sandwich structures were obtained. Test results indicated that the initial compressive stiffness and compressive strength were increased by 216.3% and 115.8%, compared to the conventional sandwich structures, respectively. But the energy absorption rate showed a decrease of 20.8%. The GCS structure shows the highest strength and stiffness-to-weight ratio. The stainless steel core rivet has little influence on the compressive performance of the GCS structure.

Key words: cold-formed steel, fiber reinforced polymer (FRP), sandwich structure, compressive stiffness, compressive strength, energy absorption capacity

中图分类号:

TB332

张富宾, 徐靖, 刘伟庆, 方海. 冷弯薄壁型钢增强复合材料夹层结构压缩性能试验研究[J]. 玻璃钢/复合材料, 2018, 0(10): 33-38.

ZHANG Fu-bin, XU Jing, LIU Wei-qing, FANG Hai. EXPERIMENTAL STUDY ON COMPRESSIVE BEHAVIOR OF A NOVEL GFRP-COLD FORMED STEEL COMPOSITE SANDWICH STRUCTURE[J]. Fiber Reinforced Plastics/Composites, 2018, 0(10): 33-38.

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