GFRP棒應用於古蹟與歷史建築木梁構件補強之研究

The Study on Wood Beam of Historical Building Reinforced by Using Glass Fiber Reinforced Plastic Bar

魏廷芳(Ting-Fang Wei)

指導教授 ： 李有豐 ； 蔡明哲

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2007年)

摘要

本研究採用玻璃纖維強化高分子複合材料（Glass Fiber Reinforced Plastic，GFRP）製成棒，補強古蹟與歷史建物之受損木梁構件。主要目的為針對受損木梁構件進行預力GFRP棒補強，並建立其施工流程標準程序。在進行修復補強前，需先瞭解木材與GFRP棒之特性，木材基本力學性質可經由CNS抗壓、抗拉及抗剪測試；GFRP棒則透過拉力測試得知，後續進行複合材料彎矩補強受損木梁構件之理論推導，並與四點抗彎測試相驗證。研究中複合材料補強之受損木梁構件，實驗試體規劃為六組，補強材料採用木粉搭配環氧樹脂、GFRP棒以及CFRP貼片，進行受損木梁構件彎矩補強。經由四點抗彎測試所得之極限載重，與未補強組比較，可知木粉與環氧樹脂修補組、GFRP棒補強中心點與偏心點貫穿孔兩組以及CFRP貼片與GFRP棒均使用的補強組，其平均強度提升約0.6 %、4.3%、3.5%以及9.5%。最後，以程式分析整理出對照組與單使用GFRP棒補強中心點與偏心點貫穿孔兩組之力與位移關係，將其與實驗數據比對，結果顯示理論值與實驗值趨勢相同，且未補強組、中心點及偏心點貫穿孔補強兩組之平均極限載重絕對誤差百分比，分別為10.2%、11.6%及12.6%。

關鍵字

木構造古蹟與歷史建築 ； 木梁構件 ； GFRP棒

並列摘要

Hollow-sectioned wood beam which was pre-stressed by glass fiber reinforced polymer (GFRP) bar working method was proposed in the thesis. The four-point bending test was conducted to obtain the load-displacement relationships of seventeen timber beams. A total of six group specimens were tested, those groups are benchmark, control, wood power with epoxy, GFRP bar at the central and eccentric of the timber section, and GFRP rebar with CFRP sheet. Comparing the experimental results with the Control Group, the average strengths of the Wood-Epoxy, GFRP, GFRP-e and G-CFRP increase 0.6%, 4.3%, 3.5%, and9.5%, separately. A sectional analysis method was used to obtain the force-displacement relationships of these wood beams. It shows that the analytical results can reasonably predict the force-displacement relationships of these wood beams strenthened by GFRP bar or CFRP sheet.

並列關鍵字

Wood Historical Building ； Wood Beam ； GFRP Bar

參考文獻

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