湖南大学学报（自然科学版）2016，Vol.43Issue(5)：90-96,7.
侧压竹集成材弦向偏压试验研究∗
Experimental Study on Side Pressure LBL under Tangential Eccentric Compression
摘要
Abstract
In order to investigate the eccentric compression performance of side pressure laminated bam-boo lumber (LBL),18 LBL column specimens with the slenderness ratio of 36 and cross-section of 77 mm × 7 7 mm were designed considering different eccentricity,and loaded under tangential eccentric compres-sion.The test results show that the bamboo-strip connections and bamboo joints are the weak zones for the LBL columns under tangential eccentric compression,which determine the failure modes.The ultimate longitudinal and lateral strains for Face C increased with the increase of the eccentricity ratio,while these values for Face A,Face B,and Face D decreased.The discreteness for the ultimate longitudinal strain of the specimens with small eccentricity was relatively large.However,the ultimate lateral strain values for all specimens exhibited obvious discreteness.After the ultimate strength,the load-carrying capacities of the specimens with small eccentricity decreased significantly compared with those of the specimens with large eccentricity.However,the smaller eccentricity resulted in more evident discreteness of the ultimate load values.In addition,the strain was distributed linearly at the cross-section of the columns,which sat-isfies the plane-section assumption.Furthermore,an equation to predict the eccentricity influencing coeffi-cient on the bearing capacity of laminated bamboo lumber columns was proposed.The predictions gave a good agreement with the test results.关键词
竹集成材/弦向偏压/偏心率/变形Key words
laminated bamboo lumber/tangential eccentric compression/eccentricity ratio/deformation分类
建筑与水利引用本文复制引用
李海涛,吴刚,张齐生,陈国..侧压竹集成材弦向偏压试验研究∗[J].湖南大学学报（自然科学版）,2016,43(5):90-96,7.基金项目
国家自然科学基金资助项目(51308301),National Natural Science Foundation of China(51308301) （51308301）
江苏省自然科学基金资助项目(BK20130978) （BK20130978）
中国博士后基金资助项目(2015M580382) （2015M580382）
江苏省博士后基金资助项目(1501037A) （1501037A）
江苏高校优势学科建设工程资助项目(PAPD) （PAPD）
