玄武岩纤维布加固新疆杨木矩形截面长柱偏心受压力学性能试验研究  

EXPERIMENTAL STUDY OF THE MECHANICAL PROPERTIES OF XINJIANG POPLAR RECTANGULAR SECTION LONG COLUMNS UNDER ECCENTRIC COMPRESSION

作　　者：王静辉[1] 刘清[1] 韩风霞[1] 何黎阳 

机构地区：[1]新疆大学建筑工程学院,乌鲁木齐830047

出　　处：《工业建筑》2017年第5期85-89,共5页Industrial Construction

基　　金：国家自然科学基金项目(51268054);新疆维吾尔自治区自然科学基金重点资助项目(2012211A006);新疆维吾尔自治区高校科研计划科学研究重点资助项目(XJEDU2012S08)

摘　　要：通过对采用玄武岩纤维布加固的15根杨木矩形长柱进行偏压试验,研究不同粘贴方式、不同层数玄武岩纤维布加固长柱的承载性能。试验结果表明:与未加固杨木矩形长柱比较,采用玄武岩纤维布间隔贴1层、2层及玄武岩纤维布满贴1层、2层加固木柱时,木柱极限承载力分别提高8.70%、19.56%、23.91%、30.43%,纵向粘贴纤维布能够有效提高木柱的抗弯承载力。木柱破坏形式多为受压区内木材顺纹方向木纤维的压屈,玄武岩纤维布能较好地约束木柱横向变形,进而产生受拉区纤维拉断,加固后的试件应变增加幅度较大。The tests for 15 poplar long-column strengthened by basalt fiber sheet were conducted under eccentrically loads, so as to investigate the effect of parameters such as pasting ways and basalt fiber sheet layer number on the bearing behavior of the long-column. The test results showed that the use of basalt fiber sheet paste interval 1 layer, 2 layers and 1 layer basalt fiber sheet with paste, 2 layers of reinforced columns, the ultimate bearing capacity were increased by 8.70% , 19.56% , 23.91% and 30. 43% respectively. Longitudinal basalt fiber sheet could effectively improve the flexural capacity of stake. The main failure mode of stake was fiber buckling along wood grain. Basalt fiber sheet could better constraint the lateral deformation of stake to avoid fiber tensile failure in the tension zone, and the strain increased greatly after reinforcement.

关 键 词：玄武岩纤维布 矩形截面长柱 轴压力学性能 破坏形态 

分 类 号：TU366.2[建筑科学—结构工程]