Theoretical Analysis on Deflection and Bearing Capacity of Prestressed Bamboo-Steel Composite Beams  

作　　者：Qifeng Shan Ming Mao Yushun Li 

机构地区：[1]School of Civil Engineering,Zhejiang Industry Polytechnic College,Shaoxing,312000,China [2]School of Civil&Environmental Engineering and Geography Science,Ningbo University,Ningbo,315211,China [3]College of Civil Engineering and Architecture,Qingdao Agricultural University,Qingdao,266109,China

出　　处：《Journal of Renewable Materials》2024年第1期149-166,共18页可再生材料杂志（英文）

基　　金：supported by the National Natural Science Foundation of China(51978345,52278264).

摘　　要：A theoretical analysis of upward deflection and midspan deflection of prestressed bamboo-steel composite beams is presented in this study.The deflection analysis considers the influences of interface slippage and shear deformation.Furthermore,the calculation model for flexural capacity is proposed considering the two stages of loading.The theoretical results are verified with 8 specimens considering different prestressed load levels,load schemes,and prestress schemes.The results indicate that the proposed theoretical analysis provides a feasible prediction of the deflection and bearing capacity of bamboo-steel composite beams.For deflection analysis,the method considering the slippage and shear deformation provides better accuracy.The theoretical method for bearing capacity matches well with the test results,and the relative errors in the serviceability limit state and ultimate limit state are 4.95%and 5.85%,respectively,which meet the accuracy requirements of the engineered application.

关 键 词：Bamboo scrimber composite beam PRESTRESS DEFLECTION bearing capacity 

分 类 号：TG142[一般工业技术—材料科学与工程]