- 摘 要
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（1 中南林業(yè)科技大學土木工程學院， 長沙 410004； 2 現(xiàn)代木結(jié)構(gòu)工程材制造與應(yīng)用技術(shù)湖南省工程實驗室， 長沙 410004）
［摘要］基于3根碳化重組竹簡支梁和3根非碳化重組竹簡支梁的抗彎試驗及考慮重組竹材料非線性的理論分析，研究重組竹作為結(jié)構(gòu)構(gòu)件的抗彎性能。根據(jù)重組竹試件的破壞形態(tài)與試驗結(jié)果評估其在極限狀態(tài)下的承載能力與變形性能，并考慮重組竹材料的非線性特性，提出了重組竹簡支梁的極限承載力計算方法。試驗結(jié)果表明，非碳化重組竹簡支梁具有較好的延性性能和較高的抗彎承載能力，完全能滿足結(jié)構(gòu)的抗彎性能要求，碳化重組竹梁的極限承載能力因為碳化而有所減弱，且延性性能大大降低，不適合作為結(jié)構(gòu)構(gòu)件，考慮材料非線性提出的重組竹簡支梁抗彎承載能力計算方法與試驗結(jié)果基本一致。
［關(guān)鍵詞］重組竹； 碳化； 簡支梁； 抗彎性能
中圖分類號：TU366-1文獻標識碼：A文章編號：1002-848X(2020)02-0117-05
Experimental research on flexural properties of bamboo scrimber beam
Li Pin1,2, Chen Bowang1,2
（1 Civil Engineering College,Central South University of Forestry and Technology， Changsha 410004, China;2 The Modern Wood Structure Engineering Material Manufacturing and Applied Technology Engineering Laboratory in Hunan Province, Changsha 410004, China）
Abstract:Based on the flexural experiments of three carbonated and three non-carbonated bamboo scrimber beams and the theoretical analysis considering the nonlinearity of the bamboo scrimber material, the flexural performance of the bamboo scrimber as the structural member was studied. According to the failure mode and experimental results of the reconstructed bamboo scrimber specimen, the bearing capacity and deformation performance under the limit state were evaluated, and the calculation method of the ultimate bearing capacity of the reconstructed bamboo scrimber simply-supported beam was proposed considering the nonlinear characteristics of the reconstructed bamboo scrimber material. The experimental results show that the non-carbonated bamboo scrimber beam has better ductility and higher flexural capacity, which can fully meet the requirements of the flexural performance of the structure. The ultimate bearing capacity of carbonated bamboo scrimber beam is weakened due to carbonation, and the ductility is greatly reduced, so it is not suitable to be used as the structural member. Considering the material nonlinearity, the calculation method of the flexural capacity of the simply-supported bamboo scrimber beams was basically consistent with the experimental results.
Keywords:bamboo scrimber; carbonization; simply-supported beam; flexural property
作者簡介：李頻，碩士，Email:380327534@qq.com。
