空心率对GFRP-ECC-钢管组合空心柱轴压及抗震性能影响  

Influence of Hollow Ratio on Axial Compression and Seismic Performance of GFRP-ECC-Steel Tubular Composite Hollow Column

作　　者：张云峰[1] 张佳睿 程凡荣 滕振超[1] 杜展祥 ZHANG Yunfeng;ZHANG Jiarui;CHENG Fanrong;TENG Zhenchao;DU Zhanxiang(Northeast Petroleum University,Daqing 163318,Heilongjiang China)

机构地区：[1]东北石油大学,黑龙江大庆163318

出　　处：《河南科学》2023年第11期1618-1627,共10页Henan Science

基　　金：黑龙江省自然科学联合引导基金项目(LH2020E018)。

摘　　要：GFRP-ECC-钢管组合空心柱(EDSTC柱)是利用GFRP管和钢管组成模具,并在GFRP管和空心钢管之间直接浇筑ECC而成的一种新型组合柱结构.使用ABAQUS有限元软件研究了空心率对EDSTC柱轴压性能和抗震性能的影响.通过研究发现:空心率对EDSTC柱的轴压性能和抗震性能有着显著的影响;随着空心率的增加,EDSTC柱的刚性、承载能力、耗能能力和抗震性能均逐渐降低,延性则逐渐增加;EDSTC柱的破坏最先出现在柱体的中部,因此在设计中应注意对EDSTC柱进行中部加固,并选择适当的空心率,以提高EDSTC柱的轴压性能和抗震性能.研究结果有助于进一步优化EDSTC柱的设计和应用,提高其在工程领域的实用性和可靠性.GFRP-ECC-steel pipe composite hollow column(EDSTC column)is a new type of composite column structure,which is made by using GFRP pipe and steel pipe to form a mold and pouring ECC directly between GFRP pipe and hollow steel pipe.The influence of hollow ratio on axial compression and seismic performance of EDSTC columns was studied by using ABAQUS finite element software.It is found that the hollow ratio has significant influence on the axial compression and seismic performance of EDSTC columns.The rigidity,bearing capacity,energy dissipation capacity and seismic performance of EDSTC columns decrease gradually with the increase of hollow ratio,while the ductility of EDSTC columns increases gradually with the increase of hollow ratio.The failure of EDSTC column first appears in the middle of the column.Therefore,in the design,attention should be paid to the reinforcement of the middle part of the EDSTC column and the appropriate hollow ratio should be selected to improve the axial compression and seismic performance of EDSTC column.The results are helpful to further optimize the design and application of EDSTC column and improve its practicability and reliability in engineering field.

关 键 词：GFRP ECC 空心率 轴心受压 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程] TU375.3