【摘要】：碳纖維復(fù)合材料(CFRP)加固建筑結(jié)構(gòu)是一種新興的加固技術(shù)。國內(nèi)外鮮有CFRP加固含初始裂紋的結(jié)構(gòu)構(gòu)件(如RC梁)的抗爆性能的研究報道�；诖笮头蔷�性動力學(xué)分析軟件LS-DYNA,從加固層數(shù)和加固寬度兩方面對CFRP局部全包裹加固含初始裂紋RC梁(裂紋梁)的抗爆性能進(jìn)行非線性有限元數(shù)值分析。研究表明,采用CFRP對裂紋梁的裂紋處進(jìn)行局部全包裹加固可提高裂紋梁的整體剛度,減小其在爆炸荷載作用下的損傷和變形程度。當(dāng)CFRP的加固層數(shù)為4層、加固寬度為300mm時,可有效提高裂紋梁的抗爆性能。該研究成果對建筑結(jié)構(gòu)抗爆設(shè)計和抗爆加固研究具有一定的指導(dǎo)意義。
[Abstract]:Carbon fiber reinforced polymer (CFRP) is a new strengthening technique for building structure. There are few studies on the anti-explosion performance of CFRP strengthened structural members (such as RC beams) with initial cracks at home and abroad. Based on the large-scale nonlinear dynamic analysis software LS-DYNA, the nonlinear finite element numerical analysis of the anti-explosion performance of RC beams with initial cracks strengthened by CFRP is carried out from the aspects of the number of strengthened layers and the width of reinforcement. The results show that the whole stiffness of cracked beam can be improved and the degree of damage and deformation can be reduced by using CFRP to reinforce the crack of cracked beam. When the number of strengthened layers is 4 and the width is 300mm, the anti-explosion performance of cracked beams can be improved effectively. The research results have certain guiding significance for the study of anti-explosion design and anti-explosion reinforcement of building structure.
【作者單位】： 遼寧工業(yè)大學(xué)土木建筑工程學(xué)院;
【基金】：國家自然科學(xué)基金(11302094,11302093) 遼寧省高等學(xué)校優(yōu)秀人才支持計劃項目(LJQ2014063,LJQ2015047) 遼寧省教育廳科研項目(L2011095)
【分類號】：TU375.1;TB33

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