GFRP框架採FRP接頭側推實驗與數值分析之研究

A Study on Pushover Test and Numerical Analysis of GFRP Frame with FRP Joints

王柏翔(Bo-Shiang Wang)

指導教授 ： 李有豐

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2013年)

摘要

本研究係利用玻璃纖維強化高分子(Glass Fiber Reinforced Plastic , GFRP)其質量輕、耐候性佳及高強度比之特性，製作GFRP框架，並進行側推實驗及結構軟體之分析。試體規劃上將使用雙腹版I形梁斷面構件作為構架之梁柱部分，而梁柱接頭則採用FRP接頭，此FRP接頭是先將GFRP版材裁切成所需之接頭形式後，再以碳纖維布進行包覆。接頭處之接合方式分為以環氧樹脂黏結之純化學接合，及環氧樹脂與GFRP插銷並用之混合接合兩種，而框架形式將分別規劃空構架、加入拉力斜撐及加入壓力斜撐3種形式之試體。試體製作時需將雙腹版I型梁之兩端切45°斜角，以利接頭隱藏於框架內，化學接合則於接合處塗布樹脂，混合接合除了於接合處塗布樹脂外，還需於接合處開孔以打入GFRP插銷，於試體製作完成後，將利用側推試驗求得其力學行為及破壞模式，由實驗數據來做試體間比較。得知以接合方式而言，混合接合之整體力學行為較化學接合來的優良，而以構架形式而言，加入拉力斜撐後整體力學行為也為三者中最好。本論文也使用SAP 2000數值模擬軟體軟體進行側推分析，並將實驗及分析所得之數據進行比較後得知兩者之極限載重及力-位移曲線皆相近。

關鍵字

FRP ； 玻璃纖維 ； 框架 ； 側推試驗 ； FRP接頭 ； FRP插銷

並列摘要

This study uses light weight, weather resistant and high strength Glass Fiber Reinforced Plastic (GFRP) composites to produce a framework the behavior of which was analyzed in a pushover experiment and by using a numerical analysis software. In the specimental plan, double-web FRP I-beams are used for the beams and columns of the frame but the joint are made from an GFRP deck cut into the desired form, bonded together and wrapped with carbon fiber sheet. Three types of frame specimens with braces in compression, tension and no bracing were used for each joint type – chemically bonded joint (using epoxy resin) or a hybrid joint using GFRP bolts in addition to epoxy resin. When making the specimens the double-web I-beam is given a 45 ° cut at the ends to let joint fit in the frame. The joint is then bonded to the frame by chemical bonding (using epoxy resin coating) or by hybrid bonding (using not only resin coating but also adding GFRP bolts in the beam-column joint).
After the specimens are made, a pushover experiment is done to investigate the mechanical behavior and failure mode of the frame. The experimental results showed that the mechanical behavior of the hybrid joint is better than the chemically bonded joint and that tension bracing has a better performance. This study also uses numerical analysis software SAP2000 for the pushover simulation analysis of the frames and it was learned that the ultimate stength and force-displacement curce of the analytical results were similar to that of the experimental ones.

並列關鍵字

FRP ； GFRP ； Frame ； Pushover ； FRP Joint ； FRP Bolt

參考文獻

23. 李有豐、徐增興、余忠政，「FRP構件物理及化學結合剪力強度之研究」，第十一屆結構工程研討會論文集，臺中，臺灣，2012。

22. 李有豐，FRP複合材料於土木與建築工程之應用，臺北，臺灣：台灣區複合材料工業同業公會，2012。

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