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(1 南京林業(yè)大學(xué)，南京 210037； 2 東南大學(xué)，南京 210096)

［摘要］通過(guò)10個(gè)大尺寸矩形竹梁的試驗(yàn)，重點(diǎn)從結(jié)構(gòu)構(gòu)件層次上研究了新型竹梁的受彎性能。研究表明，竹梁存在四種典型的破壞形態(tài)，其允許承受的設(shè)計(jì)荷載實(shí)際是由截面剛度控制，而并非強(qiáng)度控制；竹梁在破壞前，橫截面應(yīng)變沿高度方向的分布基本上呈線性，平截面假定是成立的。同時(shí)，還介紹了新型竹梁在抗震安居示范房工程中的應(yīng)用情況，竹梁的使用性能在實(shí)踐工程中得到了良好的檢驗(yàn)。

［關(guān)鍵詞］竹質(zhì)工程材料；梁；竹結(jié)構(gòu)；汶川地震；重建

Experimental study on flexural performance of bamboo beams

Wei Yang¹, Jiang Shenxue¹, Lü Qingfang², Zhang Qisheng¹, Wang Libin¹, Lü Zhitao²(1 Nanjing Forestry University, Nanjing 210037, China; 2 Southeast University, Nanjing 210096, China)

Abstract:Ten large-size bamboo rectangular beams were tested to investigate bending performance of a new type of bamboo beams with emphasis on structural components. It was concluded that bamboo beams exhibited four kinds of typical failure modes, the control condition of the permit design load was the cross-section stiffness rather than material strength. Before the failure of bamboo beams, cross-section strain distribution along the height was linear, and the plane-section assumption was established. At the same time, the new type of bamboo beams used in the anti-seismic living model room was introduced and the bamboo beams performance was tested well in practice.

Keywords:bamboo engineering materials; beams; bamboo structure; Wenchuan Earthquake; reconstruction

*中國(guó)工程院咨詢研究項(xiàng)目、國(guó)家“十一五”科技支撐計(jì)劃(2006BAD11A16)；江蘇省教育廳資助項(xiàng)目(08KJD560003)；江蘇省建設(shè)廳科研資助項(xiàng)目(200808120001)；國(guó)家“937”計(jì)劃項(xiàng)目(2007CB714200)。

作者簡(jiǎn)介：魏洋，博士，講師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：wy78-seu@yahoo.com.cn。

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