摘要
木材和混凝土材料在长期的荷载作用下有较明显的徐变效应,木一混凝土组合梁在正常使用过程中可能出现较大的变形。简要分析了木一混凝土组合梁的长期受力机理,并较系统地对国外研究现状进行了综述。重点介绍国外木一混凝土组合梁长期试验研究,主要分为推出件试验研究及梁式试验研究,还介绍了国外木-混凝土组合梁长期受力性能的理论分析方法与数值模拟方法。指出了现有理论计算和设计方法的优缺点,并提出未来在木-混凝土组合梁设计方面需要进一步研究和解决的问题。
Timber and concrete subject to long-term load has obvious creep effect. During the service life, significant deformation will occur in timber-concrete composite （TCC） beams. The mechanism of load behavior of TCC beams is introduced, and the overseas research status on TCC beams is reviewed. The emphasis is put on the long-term experimental results of TCC beams, including the push-out specimens tests and beam specimens tests. In the meanwhile, the theoretical and numerical analysis methods for time-dependent load behavior of TCC beams are reviewed. Advantages and disadvantages of these methods are summarized, furthermore, the problems to be solved in the application of the TCC beams are put forward.
出处
《林产工业》
北大核心
2017年第4期6-11,共6页
China Forest Products Industry
基金
国家自然科学基金(51478220)
关键词
木-混凝土组合梁
长期
徐变
试验
综述
Timber-concrete composite beams
Long-term
Creep
Test
Review
