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楊俊杰1，周杰1，單玉川2，善魯陽(yáng)1

（1 浙江工業(yè)大學(xué)建筑工程學(xué)院， 杭州 310014； 2 浙江工業(yè)大學(xué)建筑規(guī)劃設(shè)計(jì)研究院， 杭州 310014）

［摘要］GFRP作為一種性價(jià)比較高的新材料，在紫外線照射下的耐久性能值得研究。試驗(yàn)以GFRP管混凝土圓柱為研究對(duì)象，分別各制作兩組6根纖維鋪設(shè)角度為0°和30°的150mm×450mm的柱子，并將每組構(gòu)件放入水中。為加速老化，在氣候箱內(nèi)共安裝16根UVA-340燈管和12根UVB-313燈管，照射45d后取出構(gòu)件進(jìn)行加載。試驗(yàn)表明：紫外線老化作用對(duì)GFRP管混凝土圓柱的極限承載力有較為明顯的影響，并且對(duì)纖維鋪設(shè)角度為0°的影響較纖維鋪設(shè)角度為30°的更大；水環(huán)境對(duì)纖維鋪設(shè)角度為30°的GFRP管混凝土圓柱的極限承載力影響更大，并且纖維破壞朝著浸水部位發(fā)展。

［關(guān)鍵詞］GFRP管； 紫外線； 極限承載力

中圖分類(lèi)號(hào)： TU398    文獻(xiàn)標(biāo)識(shí)碼： A    文章編號(hào)： 1002-848X(2015)S2-0400-06

Study on the durability of GFRP tube concrete columns under the UV irradiation

Yang Junjie1， Zhou Jie1， Shan Yuchuan2， Shan Luyang1

(1 College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China；

2 Architectural and Planning Design & Research Institute, Zhejiang University of Technology, Hangzhou 310014, China)

Abstract： GFRP as a new material with high ratio of performance to price, is worth to study under irradiation of ultraviolet durability. The experiment takes the GFRP tube concrete column as the research object, respectively producing six fiber laying angle of 0° and 30° 150mm×450mm columns, and respectively putting the three columns into the water. In order to accelerate the aging, 16 UVA-340 lamps and 12 UVB-313 lamps were installed on the climate box, after 45 days out component loading. The tests show that the effect of ultraviolet aging can obviously affect the ultimate bearing capacity of GFRP tube concrete columns, and the influence of fiber laying angle of 0° compared to fiber laying angle of 30° more; the water environment has greater influence on the ultimate bearing capacity of fiber laying angle of 30° of GFRP tube concrete columns, and the fiber failure developed toward immersion parts.

Keywords： GFRP tube； UV ultraviolet； ultimate bearing capacity

作者簡(jiǎn)介：楊俊杰，碩士，教授，Email：yjinjie@163.com。