纖維棒應用於梁構件力學行為與耐久性之研究

A Study on the Flexural Reinforced Concrete Beams with FRP Bars and Durability

羅國軒(Kuo-Hsuan Lo)

指導教授 ： 李有豐 ； 林至聰

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2007年)

https://doi.org/10.6841/NTUT.2007.00347

摘要

本文使用兩種高分子複合材料分別為：碳纖維高分子複合材料(Carbon Fiber Reinforced Plastics, CFRP)製成之碳纖維棒，以及玻璃纖維高分子複合材料(Glass Fiber Reinforced Plastics, GFRP) 製成之玻璃纖維棒。試驗第一部份為討論利用GFRP棒應用於混凝土梁構件中，探討其梁受力後之破壞模式以及受力行為，且將ACI 440單筋梁設計、修正ACI 440雙筋梁設計與GFRP梁試體之實驗值進行比較，提出一合理之設計公式。第二部份為將碳維棒進行握裹試驗，試驗變數分別為握裹長度、混凝土設計強度。試驗之結果用以了解CFRP棒與混凝土塊握裹之行為模式，並且提出一合理之握裹長度以供工程師參考。第三部份為使用CFRP棒與GFRP棒分別進行耐久性試驗，耐久性試驗之內容包括紫外線照射試驗、恆溫恆濕試驗以及耐酸鹼試驗，試驗之結果可供往後工程師設計之參考資料。

關鍵字

RC梁 ； 鋼筋混凝土 耐久性

並列摘要

In this thesis, glass fiber reinforced plastics (GFRP) bar was used to replace the reinforcement in RC beam. Three different concrete strengths and two different types of scaled-down RC beams were used in the four-point bending test. According to the ACI 440 and ACI 318 codes, a modified design method was proposed for RC beam with GFRP bars. Carbon fiber reinforced plastics (CFRP) bar with three different concrete strengths and six embedment lengthes were used in the pullout test to obtain the relationship between the debonding strength and concrete strength and embedment length. Finally, CFRP bar and GFRP bar were used under different conditions (such as emgerging in high chloride liquid, exposing in UV light and changing the temperature and humidity) to obtain the durability of the composite bars.

並列關鍵字

FRP Bar ； Flexural Concrete Beam ； Durability

參考文獻

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