| 摘要: |
| 以煤矸石混凝土替代普通混凝土制备了GFRP管煤矸石混凝土钢管空心柱(GGCSC)，并对GGCSC试件进行了轴心受压试验，通过研究GFRP管壁厚、空心率、钢管壁厚与混凝土类型对GGCSC试件轴心受压性能的影响，得出试件承载力、应变及位移等试验数据；对比了GGCSC与GFRP管普通混凝土钢管空心柱轴心受压性能的差异；通过受压过程中外部GFRP管与内部钢管的荷载位移发展趋势，揭示了两者在GGCSC轴压过程中的力学性能，为GGCSC柱的推广应用提供试验基础. |
| 关键词: GFRP管 煤矸石混凝土 钢管 空心柱 轴心受压 套箍效应 |
| DOI：103969/j.issn.1007 9629202103017 |
| 分类号: |
| 基金项目:中国博士后科学基金面上资助项目（2017M621156）；辽宁省教育厅育苗项目（LJ2020QNL006）；辽宁工程技术大学学科创新团队资助项目（LNTU20TD 12） |
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| Experimental Investigations on Axial Compression Behavior of GFRP Tube Coal Gangue Concrete Steel Tube Hollow Columns |
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ZHANG Ni, ZHENG Chenyang, ZHAO Zhongwei, LIU Haiqing, XIAN Lina
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School of Civil Engineering, Liaoning Technical University, Fuxin 123000, China
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| Abstract: |
| The GFRP tube coal gangue concrete steel tube hollow column(GGCSC) was prepared by replacing ordinary concrete with coal gangue concrete, and the GGCSC specimens were tested under axial compression. The influences of GFRP tube wall thickness, hollow ratio, steel tube wall thickness and concrete type on the axial compression performance of GGCSC specimens were studied. The experimental data of bearing capacity, strain, and displacement of the specimens were obtained. The difference of axial compression performance between GGCSC and GFRP tube ordinary concrete steel tube hollow columns was compared. Through the load displacement development trend of external GFRP tube and internal steel tube during compression, the mechanical properties of the two tubes during axial compression of GGCSC were determined. The study provides the test basis for the popularization and application of GGCSC columns. |
| Key words: GFRP tube coal gangue concrete steel tube hollow column axial compression ferrule effect |
