RESEARTH ON MECHANICAL PROPERTIES OF STEEL-BAMBOO COMPOSITE I-BEAMS AFTER BEING SUBJECTED TO LONG-TERM LOADING

WANG Jialin; LI Yushun; ZHOU Jiaru; YAN Zhimin

doi:10.13204/j.gyjzG201906150004

Volume 50 Issue 8

Oct. 2020

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WANG Jialin, LI Yushun, ZHOU Jiaru, YAN Zhimin. RESEARTH ON MECHANICAL PROPERTIES OF STEEL-BAMBOO COMPOSITE I-BEAMS AFTER BEING SUBJECTED TO LONG-TERM LOADING[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(8): 160-165,181. doi: 10.13204/j.gyjzG201906150004

Citation:

WANG Jialin, LI Yushun, ZHOU Jiaru, YAN Zhimin. RESEARTH ON MECHANICAL PROPERTIES OF STEEL-BAMBOO COMPOSITE I-BEAMS AFTER BEING SUBJECTED TO LONG-TERM LOADING[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(8): 160-165,181. doi: 10.13204/j.gyjzG201906150004

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RESEARTH ON MECHANICAL PROPERTIES OF STEEL-BAMBOO COMPOSITE I-BEAMS AFTER BEING SUBJECTED TO LONG-TERM LOADING

doi: 10.13204/j.gyjzG201906150004

School of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China

Received Date: 2020-03-16

Abstract

Abstract

In order to explore the mechanical properties of steel-bamboo composite I-beam after being subjected to long-term loading, eight steel-bamboo composite I-beam specimens were designed and fabricated with the parameters of bamboo plate thickness, steel plate thickness and width, and section height. Four of them were long-term loaded specimens. After being subjected to long-term loading, secondary loading failure tests were carried out. The other four were short-term loaded specimens, and loading failure tests were carried out directly for comparison. The long-term and short-term loaded specimens were analyzed, and the failure characteristics, failure modes and failure loads were compared. The load-strain relationship, load-deflection relationship and bearing capacity attenuation of steel-bamboo composite I-beams were studied. The calculation method of bearing capacity and deflection of steel-bamboo composite I-beams after being subjected to long-term loading was discussed. The test results showed that the steel-bamboo composite I-beams still had good mechanical properties after being subjected to long-term loading. Long-term load had no effect on the ultimate failure mode of steel-bamboo composite I-beams. The secondary loading failure and direct loading failure of composite beams had four stages of elasticity, yield, cracking and ultimate strength. The flexural deformation of long-term loaded specimens was little different from that of short-term loaded specimens. Increasing the thickness, width and section height of bamboo plate could improve the ultimate bearing capacity of long-term loaded specimens. The bearing capacity of long-term loaded specimens decreased by about 10%. This paper calculated the bearing capacity and deflection of steel-bamboo composite I-beams after being subjected to long-term loading by using the proposed formula, and the theoretical value was in good agreement with the experimental value.
- steel-bamboo composite beams,
- long-term loading,
- destructive test,
- bearing capacity degradation,
- deflection deformation

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References(14)

References

田黎敏,靳贝贝,郝际平. 现代竹结构的研究与工程应用[J]. 工程力学,2019,36(5):1-18

,27.

李玉顺,沈煌莹,单炜,等. 钢-竹组合工字梁受剪性能试验研究[J]. 建筑结构学报,2011,32(7):80-86.

沈煌莹,李玉顺,张王丽,等. 冷弯薄壁型钢-竹胶板组合梁受弯性能试验研究[J]. 建筑结构学报,2009,31(增刊2):171-175.

LI Y S, SHAN W, SHEN H Y, et al. Bending Resistance of I-Section Bamboo-Steel Composite Beams Utilizing Adhesive Bonding[J]. Thin-Walled Structures, 2015, 89:17-24.

茅鸣,张家亮,童科挺,等.基于不同种类竹板的钢-竹组合梁受弯性能对比分析[J]. 建筑结构,2020,56(16):107-113.

李玉顺,张秀华,吴培增,等. 重组竹在长期荷载作用下蠕变行为[J]. 建筑材料学报,2019,22(1):65-71.

MASSIMO F, ARIO C. Long-Term Behavior of Timber-Concrete Composite Beams. I:Finite Element Modeling and Validation[J]. Journal of Structural Engineering, 2006,132(1):13-22.

BRANDT C W, FRIDLEY K J. Load-Duration Behavior of Wood-Plastic Composites[J]. Journal of Material in Civil Engineering, 2003, 15(6):524-536.

GIRHAMMAR U A, PAN Dan H, GUSTAFSSON A. Exact Dynamic of Composite Beams with Partial Interation[J]. International Journal of Mechanical Science, 2009, 51(8):565-582.

聂建国,沈聚敏. 钢筋混凝土梁在长期荷载作用下的变形[J]. 建筑结构学报,1994(1):21-22.

李玉顺,张家亮,童科挺,等. 钢-竹组合工字型截面截面滑移及分析变形[J]. 工程力学, 2018, 35(7):150-158.

解其铁. 静荷载作用下钢-竹界面粘结性能研究[D]. 宁波:宁波大学, 2012.

沈煌莹, 李玉顺, 张振文,等. 竹材人造板在建筑结构中的深化利用研究——以工字形钢-竹组合为例[C]//徐世烺. 第八届全国土木工程研究生学术论坛论文集. 杭州:2010:1015-1021.

张秀华, 鄂婧, 李玉顺, 等. 重组竹抗压和抗弯力学性能试验研究[J]. 工业建筑,2016,46(1):7-12.

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