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2개의 볼트를 가지는 PFRP 볼트연결부의 볼트배치에 따른 강도평가
이영근 ( Young Geun Lee ),김선희 ( Sun Hee Kim ),원용석 ( Yong Seok Won ),천진욱 ( Jin Uk Cheon ),신광열 ( Kwang Yeoul Shin ),윤순종 ( Soon Jong Yoon ) 한국복합신소재구조학회 2014 복합신소재구조학회논문집 Vol.5 No.3
Fiber reinforced plastic (FRP) structural shapes are readily available in civil engineering applications. Among many manufacturing techniques used for FRP structural shapes, pultrusion process is one of the most widely used techniques in civil engineering applications. Pultrusion is a manufacturing process for producing continuous lengths of reinforced polymeric plastic structural shapes with constant cross-section. Pultruded composites are attractive for structural applications because of their continuous mass production with excellent mechanical properties. This paper presents the results of investigations pertaining to the bolted connection with two bolts for the pultruded FRP (PFRP) structural members. PFRP bolted connection tests were conducted with end distance to bolt diameter ratio (e1/db) and two types of bolt pattern such as horizontal (Pattern A) and vertical arrangement (Pattern B). As a result, it is found that the e1/db is recommended as the ratio of 4. In addition, it is also found that the bearing strengths at failure of the Pattern A and Pattern B have a similar value.