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趙亞軍^1 ,2 , 冀晨宇¹ , 李桂祥¹

( 1. 河北工程大學(xué) 土木工程學(xué)院 ，河北 邯鄲 056038 ;

2. 河北工程大學(xué) 力學(xué)實(shí)驗(yàn)教學(xué)示范中心 ，河北 邯鄲 056038)

摘   要： 為研究?jī)?nèi)置碳纖維發(fā)熱電纜－玻纖格柵瀝青混凝土的抗裂性能，對(duì)不同結(jié)構(gòu)瀝青混凝土進(jìn)行半圓抗拉試驗(yàn)，并用數(shù)值模擬的方法建立熱力耦合作用下的路面結(jié)構(gòu)，分析升溫性能和抗車轍能力。結(jié)果表明： 碳纖維發(fā)熱電纜的開(kāi)槽效應(yīng)、分層作用和本身材質(zhì)給混凝土帶來(lái)的不利影響抵消了發(fā)熱電纜的加筋作用，使混凝土抗裂性能降低了10%左右； 發(fā)熱電纜升溫性能較好，但在加熱過(guò)程中使瀝青路面變軟，路面抗車轍能力降低；玻纖格柵較高的抗拉強(qiáng)度提高了混凝土的抗裂能力，并且格柵的網(wǎng)格作用限制了集料移動(dòng)，提高了混凝土抗變形的能力。

關(guān)鍵詞： 碳纖維發(fā)熱電纜； 玻纖格柵； 數(shù)字圖像相關(guān)技術(shù)； 半圓抗拉試驗(yàn)； 數(shù)值模擬

中圖分類號(hào)： U414      

文獻(xiàn)標(biāo)志碼： A      

文章編號(hào)： 1005-8249 (2023) 05-0087-07

DOI : 10. 19860/j.cnki.issn1005-8249.2023.05.015

ZHAO Yajun^1 , 2 , JI Chenyu¹ , LI Guixiang¹

( 1. School of Civil Engineering , Hebei University of Engineering , Handan 056038 , China;

2. Experimental Teaching Demonstration Center of Mechanics , Hebei University of Engineering, Handan 056038, China) 

Abstract： In order to study the crack resistance of asphalt concrete with carbon fiber heating cable and glass fiber grating, semi-circular tensile tests were carried out on asphalt concrete with different structures, and the pavement structure under thermal-mechanical coupling was established by numerical simulation, and the temperature rise performance and rutting resistance were analyzed. The results show that the grooving effect, delamination effect and the adverse effects of carbon fiber heating cable on concrete offset the reinforcement effect of heating cable, which reduces the crack resistance of concrete by about 10%. The heating cable has good heating performance, but it softens the asphalt pavement and reduces the rutting resistance of the pavement during heating. The higher tensile strength of glass fiber grating improves the crack resistance of concrete, and the grid function of the grating limits the movement of aggregate and improves the deformation resistance of concrete.

Keywords：carbon fiber heating cable；glass fiber grid； digital image correlation technique； semicircular-tensile test；numerical modeling

  ?基金項(xiàng)目： 國(guó)家自然科學(xué)基金  (51908178) 。

    作者簡(jiǎn)介： 趙亞軍  ( 1979—) , 男 ，博士 ，副教授 。主要從事纖維增強(qiáng)材料方向的研究。

    收稿日期： 2022-04-12