后锚固体系纯弯锚板刚性研究  

Research on Rigidity of Pure Bending Plate for Post-installed Anchoring System

作　　者：龙帮云[1,2,3] 张恒[3] 杨慧邦 谷文汉 刘志强[3] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,徐州221008 [2]江苏建筑节能与建造技术协同创新中心,徐州221116 [3]中国矿业大学江苏省土木工程环境灾变与结构可靠性重点实验室,徐州221008 [4]碧桂园集团,徐州210008

出　　处：《混凝土与水泥制品》2017年第7期74-77,共4页China Concrete and Cement Products

基　　金：中央高校基本科研业务费专项资金资助项目(2015XKMS011)

摘　　要：为探究后锚固群锚试件在纯弯作用下锚板刚性性能的发挥,设计并制作了9个不同锚板厚度与锚栓间距的后锚固试件,主要研究了试件的破坏形态、极限承载力、锚栓应变、锚板应变和位移。结果表明,当锚板厚度大于18mm和锚栓间距小于10倍锚板厚度时,锚板的强度利用率较高,能达到70%左右。锚栓间距的增加或锚板厚度的增加,都会使后锚固试件的极限荷载得到提高,且锚板厚度的影响更为明显。锚板厚度过小或锚栓间距过大时,锚板应变发展迅速,锚板刚性性能较差。In order to investigate the properties of the rigidity of anchor plate under pure bending, 9 anchor plates with different thickness and anchor arrangement were designed to study the failure mode, ultimate bearing capacity, anchor strain, strain and deformation of anchor plate of specimens. The results show that utilization ratio of anchor plate strength will reached 70%, when the plate thickness more than18mm and anchor distance smaller than 10 times of plate thickness. The increase of the anchor bolt distance or thickness of the anchor plate lead to increasing of the ultimate bearing capacity, and the influence of the anchor plate thickness is more obvious. When the thickness of the anchor plate is too small or the anchor bolt distance is too large, the strain of the anchor plate develops rapidly, and the rigidity of the anchor plate is not excellent.

关 键 词：后锚固 纯弯作用 锚板刚性 锚板厚度 

分 类 号：TU398[建筑科学—结构工程]