The Experimental Study of the Near-Edge Chemiaclly Adhesive Anchors

• Main Authors: Tan-Hong wang, 王天宏
• Other Authors: noene
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/xr44ht

碩士 === 逢甲大學 === 土木及水利工程所 === 91 === Adhesive anchors are increasingly applied to various structural constructions and reinforcements due to their high strength and good reliability. However, the design specifications for such anchors are not yet well-developed. Moreover, there is very little work done to study the behavior of adhesive anchors with insufficient edge distance. Therefore, the main objective of this study is to investigate the behavior of near-edge adhesive anchors by means of experimental tests. Concrete strength, embedment length and adhesive are three major parameters taken into consideration. It is found from the test results that the capacity of adhesive anchors with insufficient embedment length would increase 3.6kN to 7.2kN when the strength of concrete raises from 20.7MPa to 27.6MPa. Insufficient edge distance definitely causes a reduction in the capacity of anchors. However, this reduction becomes insignificant for the anchors embedded in concrete of higher strength or embedded with sufficient length. The embedment length not only influences the capacity of anchors but also affects the failure mode of anchors. Only the anchors with sufficient embedment length would fail in steel fracture. Besides, the capacity and failure mode both vary when the adhesives used are different. Three design procedures are selected to calculate the predicted capacity of anchors in order to evaluate their applicability to adhesive anchors. The comparison between the calculated values and the test results shows that the design equations proposed by ACI 318 building code yield better prediction.