花旗松胶合木销槽顺纹承压性能影响因素研究  

EXPERIMENTAL STUDY ON INFLUENCE FACTORS OF EMBEDDING PERFORMANCE PARALLEL TO GRAIN OF GLULAM

作　　者：施凌拢 周淑容[1,2] 欧加加[3] 朱海 SHI Ling-long;ZHOU Shu-rongu;OU Jia-jia;ZHU Hai(l.Key Laboratory of New Technology for Construction of Cities in Mountain Area,Ministry of Education,400045,Chongqing,China;School of Civil Engineering,Chongqing University,400045,Chongqing,China;China Southwest Architectural Design and Research Institute Corp.Ltd,610041,Chengdu,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 [3]中国建筑西南设计研究院有限公司,成都610041

出　　处：《建筑技术》2021年第3期278-283,共6页Architecture Technology

基　　金：国家重点研发计划资助项目(2016YFC0701505)。

摘　　要：对50个花旗松胶合木销槽顺纹承压试件进行试验,研究开槽方式、试件尺寸(厚度、高度和宽度)及螺栓直径等因素,对销槽顺纹承压性能的影响。分别采用5%d偏移法和5mm位移法确定销槽顺纹承压强度,将理论计算模型与试验结果进行对比,结果表明,销槽平行层板宽度时,销槽的顺纹承压强度降低较明显;试件尺寸和螺栓直径对销槽顺纹承压强度有一定影响,但影响不大;按5mm位移法和5%d偏移法确定的胶合木销槽顺纹承压强度较接近;NDS/GB50005标准的计算模型与试验结果吻合较好。Embedding tests of 50 Douglas Fir Glulam specimens were conducted,and the effects of the slotting way,specimen dimensions,thickness,height and width,and bolt diameters on the embedding performance parallel to grain were studied.The embedding strength was evaluated by 5%d offset method and 5mm displacement method respectively,and compared with the theoretical calculation models.The results show that,when the pin slot is parallel to the laminate width,the embedding strength is obviously reduced.Specimen dimensions and bolt diameters have limited influence on the embedding strength.The embedding strength evaluated by 5mm displacement method was close to that obtained with the 5%d offset method.The research also shows that the values determined from NDS and GB50005 are close to the test results.

关 键 词：胶合木 销槽顺纹承压性能 开槽方式 试件尺寸 螺栓直径 

分 类 号：TU366.3[建筑科学—结构工程] TU317.1