南京工业大学学报（自然科学版）2016，Vol.38Issue(5)：121-128,8.DOI:10.3969/j.issn.1671-7627.2016.05.020
胶合木张弦梁弯曲性能试验及工程应用研究
Experimental research on flexural behavior of glulam beam string structure and engineering application
摘要
Abstract
In order to investigate the performance of glulam beam string structures(BSS),ten specimensof douglas fir glulam beams (2 of ordinary glulam beams,8 of BSS)were undertaken.The results indicate that BSS can improve the brittleness failure mode of ordinary beam,and the compression performance of the upper chord beam can be used effectively.The BSS behave mostly as the characteristics of plastic failure.The ultimate bearing capacities of BSS are increased by more than three times.The ultimate bearing capacity and stiffness are inversely proportional to thespan-to-depth ratio,but directly proportional to the sag-to-span ratio,to the number of web members.The influence of the initial prestress level on the bearing capacity is not obvious,but contributes to the stiffness of the whole structure is important.The ductility of BSS should be considered from various aspects.Combined with a completed design,a arched glulam beam string structure with 50.4 m span,the key connection,prestress and other issues,and analyze the overall performance of the structure were described.The results can provide reference for the BSS theory and engineering application.关键词
胶合木张弦梁/跨高比/垂跨比Key words
glulam beam string structure/span-to-depth ratio/sag-to-span ratio分类
建筑与水利引用本文复制引用
孙小鸾,刘伟庆,陆伟东,朱先伟,袁盛林..胶合木张弦梁弯曲性能试验及工程应用研究[J].南京工业大学学报（自然科学版）,2016,38(5):121-128,8.基金项目
国家科技支撑计划 （）
