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Position: Home > Articles > Study on Shear Behavior of Thin-Wall Steel-Recombinant Bamboo Composite Beams Forest Engineering 2018 (6) 72-79

薄壁型钢-重组竹组合工字形梁受剪性能研究

作  者:
葛玉猛;李玉顺;童科挺;张家亮
单  位:
宁波大学建筑工程与环境学院
关键词:
重组竹;冷弯薄壁型钢;组合工字形梁;剪跨比;受剪承载力
摘  要:
本文提出组合效应更好的薄壁型钢-重组竹组合工字形梁,薄壁型钢-重组竹组合工字形梁是将冷弯薄壁型钢与重组竹通过结构粘合剂或者结构粘合剂加自攻螺钉复合而成。以剪跨比、型钢厚度、腹板厚度和腹板高度等为参数进行12根组合梁的受剪性能试验,观测组合梁破坏过程、变形特征和分析受剪承载力的影响因素,并提出组合梁受剪承载力计算公式。研究结果表明,薄壁型钢-重组竹组合工字形梁整体工作性能良好,组合效应显著,具有较高的受剪承载力;组合梁的受剪承载力主要受剪跨比影响,随着剪跨比的增大其受剪承载力降低,当剪跨比较小时试件发生剪切破坏,随着剪跨比的增大组合梁破坏形态由剪切破坏过渡到弯曲破坏;本文提出的组合梁受剪承载力计算公式所得结果与试验结果之间吻合良好。
译  名:
Study on Shear Behavior of Thin-Wall Steel-Recombinant Bamboo Composite Beams
作  者:
GE Yumeng;LI Yushun;TONG Keting;ZHANG Jialiang;School of Architecture Engineering and Environment, Ningbo University;
单  位:
GE Yumeng%LI Yushun%TONG Keting%ZHANG Jialiang%School of Architecture Engineering and Environment, Ningbo University
关键词:
Reconstituted bamboo;;cold-formed thin-wall steel;;I-shaped composite beam;;shear-span ratio;;shear capacity
摘  要:
In this paper, it is proposed that the combination effect is better for the thin-walled steel-recombined bamboo composite I-beam. The thin-walled steel-recombined bamboo composite I-beam is composed of the cold-formed thin-walled steel and the recombined bamboo through the structural adhesive or the structural adhesive with the self tapping screw. The shear behavior test of 12 composite beams was carried out with parameters of shear span ratio, profile steel thickness, web thickness, and web height as parameters. The failure process and deformation characteristics of composite beams are observed, and the influencing factors of shear capacity are analyzed. The calculation formula of shear capacity of composite beams is proposed. The results show that the thin-walled steel-reconstituted bamboo composite I-beam has good overall work performance, significant combined effect, and high shear bearing capacity; the shear bearing capacity of the composite beam is mainly affected by the shear-span ratio. When the ratio increases, the shear capacity decreases. When the shear span is relatively small, the specimen undergoes shear failure. With the increase of the shear span ratio, the composite beam failure mode transitions from shear failure to bending failure. The results produced by the calculation formula of shear capacity of composite beams which is proposed in this paper are in good agreement with the experimental results.

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