摘要
竹管做梁构件时,常在集中荷载作用下发生破坏。为探索竹管弯曲承载力,文中提出了抗弯分配梁试验装置,进行了长管的弯曲试验,用分配梁测出长管的抗弯承载力;将竹管抗弯试验装置简化为简支计算梁模型,结合抗弯计算模型与竹管荷载-位移曲线的弹性阶段斜率,计算出各竹管的纵向平均弹性模量值,并解释了该计算值偏小的原因。
When bamboo tubes are used as beam in bamboo building,they are often destroyed by concentrated load.In order to further explore the flexural capacity of bamboo tubes,this article proposes a testing device of bending distribution beam which is used to test the flexural capacity of the long tubes.Meanwhile,the test device of bending distribution beam is simplified into a computational model of simply supported beam.Furthermore,the bamboo tubes’longitudinal modulus of elasticity is calculated based on the computational model and the slope of load-displacement curve in the elastic stage.Finally,the reason why modulus value is smaller than the value calculated in the microscopic test are explained.
作者
芮观宝
卓新
RUI Guanbao;ZHUO Xin(College of Engineering and Architecture,Zhejiang University,Hangzhou 310058,China)
出处
《低温建筑技术》
2020年第4期42-44,共3页
Low Temperature Architecture Technology
基金
“十三五”国家重点研发计划资助项目(2017YFC0703500)。
关键词
竹管
抗弯承载力
荷载-位移曲线
纵向弹性模量
bamboo tubes
flexural capacity
load-displacement curve
longitudinal modulus of elasticity
