现代胶合木梁弯曲性能试验研究  

EXPERIMENTAL STUDY ON FLEXURAL BEHAVIOR OF GLULAM BEAMS

作　　者：周淑容[1,2] 冯蜀逸 熊刚[1,2] 朱海 ZHOU Shu-rong;FENG Shu-yi;XIONG Gang;ZHU Hai(Key Laboratory of New Technology for Construction of Cities in Mountain Area,Chongqing University,400045,Chongqing,China;School of Civil Engineering,Chongqing University,400045,Chongqing,China)

机构地区：[1]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [2]重庆大学土木工程学院,重庆400045

出　　处：《建筑技术》2020年第3期307-310,共4页Architecture Technology

基　　金：国家重点研发计划资助项目(2016YFC0701505).

摘　　要：对北美进口花旗松规格材制作的清材小试件和胶合木梁足尺试件分别进行受弯性能试验,结果表明2种试件的弯曲破坏均为脆性破坏,但胶合木梁试件的破坏现象受木节等缺陷的影响更明显,其弹性模量和受弯强度明显低于清材小试件。胶合木梁足尺试件的弯曲弹性模量和受弯强度与密度不具有相关性,而清材小试件的试验结果与密度具有一定的相关性。The flexural behavior using clear wood specimens and full-scale glulam beams made of North America Douglas Fir dimension lumber were tested. The results show that the failure modes of both specimens were brittle failure but the glulam beam is more obviously affected by the defects such as knots. The MOE and bending strength of glulam beams are lower than those of the clear specimens apparently, and have no correlation with the oven-dry density, but the clear specimens are the opposite.

关 键 词：清材小试件 胶合木梁 弯曲弹性模量 受弯强度 

分 类 号：TU366[建筑科学—结构工程] TU317.1