预应力钢-木组合圆形柱轴心受压力学性能研究

王宇豪; 刘德贵; 王宁; 马京京

doi:10.13204/j.gyjzG20061012

预应力钢-木组合圆形柱轴心受压力学性能研究

doi: 10.13204/j.gyjzG20061012

王宇豪¹,
刘德贵^1,2, ,,
王宁¹,
马京京¹

1. 西南科技大学土木工程与建筑学院, 四川绵阳 621010;
2. 工程材料与结构冲击振动四川省重点实验室, 四川绵阳 621010

基金项目:

四川省科技厅应用基础研究项目（2019YJ0437）。

详细信息

作者简介:
王宇豪,男,1995年出生,工学硕士。

通讯作者:
刘德贵,男,1983年出生,工学博士,讲师,shll830520@163.com。

计量
- 文章访问数: 122
- HTML全文浏览量: 4
- PDF下载量: 11
- 被引次数: 0
出版历程
- 收稿日期: 2020-06-10
- 网络出版日期: 2022-04-24

Experimental Research on Mechanical Properties of Prestressed Steel-timber Circular Column Under Axial Compression

1. School of Civil Engineering and Architecture, Southwest University of Science and Technology, Sichuan, Mianyang 621010, China;
2. Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang 621010, China

摘要

摘要: 为改善纯木柱承载力较低、易发生脆性破坏和延性较差等缺点，提出一种预应力钢-木组合圆形柱，并对这种构件进行了轴心受压试验，获得了各个试件的破坏形态、破坏模式、延性指标、荷载-位移曲线和荷载-应变曲线。结果表明，相较于薄壁钢筒和纯木柱极限荷载（P_max）的总和，预应力钢-木组合圆形柱和CFRP布包裹预应力钢-木组合圆形柱分别提高了16.12%和24.49%；与纯木柱相比，延性指标（DI）分别提高了268.73%和340%。采用ABAQUS有限元分析软件建立了预应力钢-木组合圆形柱模型，并通过位移加载的方式得到了试件的荷载-位移曲线，与试验结果吻合良好。有限元分析结果表明，当环向预应力与钢材屈服强度的比值为0.1，0.2和0.3时，试件的P_max提升明显；当环向预应力达到钢材屈服强度的40%时，试件的P_max减小，但仍然大于未施加预应力的试件。约束效应系数λ随CFRP布的使用和预应力的增加而增加。
- 预应力钢-木组合柱 /
- 轴心受压 /
- 力学性能 /
- 有限元模拟
Abstract: In order to improve the low bearing capacity, brittle failure and poor ductility of timber columns, the pre-stressed steel-timber circular column was proposed. The axial compression tests were carried out on the components, and the failure forms, failure modes, ductility index, load-displacement curves and load-strain curves of each specimen were obtained. The results showed that compared with the sum of ultimate load(P_max) of thin-walled steel cylinder and timber column, the ultimate load of the prestressed steel-timber circular column and the prestressed steel-timber circular column wrapped with CFRP increased by 16.12% and 24.49% respectively. Compared with the timber column, the ductility index(DI) increased by 268.73% and 340% respectively. The model of the prestressed steel-timber circular column was built by the finite element analysis software ABAQUS, and the load-displacement curve which was obtained by means of displacement loading was in good agreement with the test results. The finite elements analysis results showed that when the prestressing of lateral steel equalled 0.1,0.15 and 0.2 times of its tensile yield, the P_max increased obviously. The P_max would be reduced when the prestressing of lateral steel reached 0.25 times of its tensile yield, but it was still larger than the P_max of unstressed specimen. Confinement effect coefficient λ increased with the increase of pre-stressing of steel and use of CFRP sheets.
- prestressed steel-timber composite column /
- axial compression /
- mechanical properties /
- finite element simulating

HTML全文

参考文献(21)

[1]	WEI P, WANG B J, LI H, et al. A comparative study of compression behaviors of cross-laminated timber and glued-laminated timber columns[J]. Construction and Building Materials,2019,222(10):86-95.
[2]	王小盾.钢木组合结构的研究现状与发展前景[C]//2011全国钢结构学术年会论文集.2011:654-657.
[3]	潘福婷.钢-木组合构件试验研究及有限元分析[D].南京:东南大学,2008.
[4]	王香云.钢管加固木柱轴心受压性能试验研究[D].西安:西安建筑科技大学,2014.
[5]	赵东拂,王磊,孟颖.钢-木组合柱抗侧力性能试验研究及有限元分析[J].振动与冲击,2018,37(11):61-70 ,135.
[6]	李威,高颖,孟鑫淼,胡祺斌,邱雅琴.角钢-集成材L形组合柱的受压性能研究[J].林业工程学报,2020,5(1):53-60.
[7]	GHAZIJAHANI T G, HUI J, HOLLOWAY D. Timber filled CFRP jacketed circular steel tubes under axial compression[J]. Construction and Building Materials, 2015, 94:791-799.
[8]	GHAZIJAHANI T G, JIAO H, HOLLOWAY D. Rectangular steel tubes with timber infill and CFRP confinement under compression:experiments[J]. Journal of Constructional Steel Research, 2015, 114(11):196-203.
[9]	AWALUDIN A, RACHMAWATI K, ARYATI M, et al. Development of cold formed steel-timber composite for roof structures:compression members[J]. Procedia Engineering, 2015, 125:850-856.
[10]	NABATI A, GHAZIJAHANI T G, NG C T. CFRP-reinforced concrete-filled steel tubes with timber core under axial loading[J]. Composite Structures, 2019, 217(6):37-49.
[11]	QIAO Q Y,YANG Z Y,MOU B. Experimental study on axial compressive behavior of CFRP confined square timber filled steel tube stub columns[J]. Structures,2020,24:823-834.
[12]	中华人民共和国建设部. 木材顺纹抗压强度试验方法:GB/T 1935-2009[S].北京:中国建筑工业出版社,2009.
[13]	中华人民共和国建设部. 木材横纹抗压强度试验方法:GB/T 1939-2009[S].北京:中国建筑工业出版社,2009.
[14]	中华人民共和国国家质量监督检验检疫总局. 金属材料拉伸试验第1部分:室温试验方法:GB/T 228.1-2010[S].北京:中国标准出版社,2011.
[15]	中华人民共和国住房和城乡建设部. 木结构试验方法标准:GB/T 50329-2002[S].北京:中国建筑工业出版社,2012.
[16]	LI H M, QIU H X, WANG W B. Flexural strength evaluation of steel jacket splice joint timber beam[C]//14th World Conference on Timber Engineering. Vienna:WCTE, 2016:829.
[17]	陈志勇. 应县木塔典型节点及结构受力性能研究[D].哈尔滨:哈尔滨工业大学,2011.
[18]	潘毅,安仁兵,张春涛,等.BFRP布加固圆截面木梁受弯性能试验研究[J].建筑结构学报,2019,40(10):197-206.
[19]	KARAMPOUR H, BOURGES M, GILBERT B P, et al. Compressive behaviour of novel timber-filled steel tubular (TFST) columns[J]. Construction and Building Materials, 2019, 238.DOI: 10.1016/j.conbuildmat.2019.117734.
[20]	ROSS R J. Wood handbook:wood as an engineering material:general technical report FPL-GTR-190[R].Madison, Wisconsin:Forest Products Laboratory, USDA Forest Service,2010.
[21]	韩林海. 钢管混凝土结构:理论与实践[M].北京:中国科学出版社,2007.