波形齿锚具锚固CFRP片材的力学性能试验研究及锚具体系设计

EXPERIMENTAL RESEARCH ON MECHANICAL PROPERTY OF ANCHOR CFRP SHEET WITH THE WAVE-SHAPED-TEETH ANCHOR AND DESIGN OF ANCHOR SYSTEY

  • 摘要: 针对波形齿锚具受力机理中的粘结、摩擦及弯曲效应设计出多种锚具,用碳纤维布制作若干多层布CFRP片材的小试件并用这几种锚具进行拉伸试验,从而实现锚固长度计算公式中参数进行试验研究并对其进行量化。同时还进行了有粘结型与无粘结型波形齿锚具锚固CFRP片材的试验,结果表明:波形齿锚具是以第一排螺杆轴力增量为主来增大摩擦力实现可靠锚固CFRP片材。并提出设计螺杆时其轴力与剪力值可取CFRP片材极限抗拉强度的百分率。

     

    Abstract: Based on the bond effect, friction effect and bend effect of the mechanism of a wave-shaped-teeth (WST) anchor, many kinds of anchors are designed. Many tests which are composed of many layers carbon fiber reinforced polymer (CFRP) sheets and those anchors are pulled. Those pull experiments quantify the parameters of the anchor length formula. At the same time, the WST anchors with bond and without bond to anchor CFRP sheet are tested. Test results indicate that the frictional force (the axial force increment of the first row bolt in the WST anchor brings this frictional force) firmly anchors CFRP sheet. And this paper suggests that when the bolts are designed, the axial fore and shear fore of the bolt in the WST anchor are the certain percent of ultimate tensile strength of CFRP sheet.

     

/

返回文章
返回