CFRP加固钢筋混凝土T梁抗爆动力响应数值模拟

为了研究CFRP加固钢筋混凝土T梁的抗爆性能,采用ANSYS/LS-DYNA有限元软件,建立了钢筋混凝土T梁—CFRP材料—空气域—TNT炸药的全耦合模型,进行爆炸荷载下钢筋混凝土T梁的数值模拟,对钢筋混凝土T梁的动态力学性能进行了分析,分别研究了CFRP外贴形式、CFRP厚度对钢筋混凝土T梁的影响.结果表明:相比普通...

Numerical simulation of explosion-resistant dynamic response of concrete T-beams reinforced by CFRP

In order to study the anti-explosion performance of reinforced concrete T-beams strengthened by CFRP, the ANSYS/LS-DYNA finite element software was used to establish a fully coupled model of reinforced concrete T-beam-CFRP material-air domain-TNT explosive. The numerical simulation of the reinforced concrete T-beam under explosion load was carried out, the dynamic properties of the T-beam were analyzed, and the influence of the external pasted CFRP and CFRP thickness on the reinforced concrete T-beam was studied respectively. The results show that compared with the ordinary reinforced concrete T-beam, CFRP material can effectively restrain the expansion of the concrete crack at the bottom of the T-beam and lift its integrity, and then improve the bending stiffness; Considering the stress and economy, the anti-explosion performance of the reinforced concrete T-beams strengthened by CFRP both at the top and the bottom is better; When the CFRP thickness is 0.3 mm, the dynamic response of the T-beam under explosive load is the least.