摘要
试验中设计了3根足尺的胶合木-轻骨料混凝土组合梁,对其进行了四点弯曲作用下的受力性能试验,主要研究参数为胶合木与轻骨料混凝土间的剪力连接件数量,即剪力连接程度;作为对比,同时进行了1根足尺的胶合木梁的四点弯曲试验。分析了胶合木和混凝土板两者界面的滑移曲线、梁的跨中荷载-挠度曲线等。结果表明:剪力连接件数量越多,其剪力连接程度越高,抗弯刚度越大;随着剪力连接程度的提高,胶合木-轻骨料混凝土的组合效应增加。
In this paper,three full-scale glulam-lightweight concrete composite beams( GLCBs),with different levels of shear connection degrees,were tested under four-point bending. One full-scale wooden beam was also tested under four-point bending for comparison. The bond-slip relationship between the glulam and the concrete slab,the mid-span load-displacement curves of all beams were obtained and analyzed. Experimental results indicate that the shear connection degree and the bending stiffness increase with the increase of the number of shear connectors; the composite effect of GLCB increases with the increase of shear connection degree.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2017年第S1期297-301,共5页
Journal of Building Structures
基金
国家自然科学基金项目(51478220
51608263)
江苏省自然科学基金青年基金项目(BK20160998)
