玄武岩纤维布加固钢筋混凝土板的抗爆性能分析

为研究玄武岩纤维布(BFRP)对钢筋混凝土结构的抗爆加固效果,利用LS-DYNA软件建立了空气中接触爆炸条件下BFRP加固钢筋混凝土板的有限元模型.利用流固耦合算法模拟了板的破坏过程,比较了加固前后板的破坏形态、钢筋应力及板底位移,并比较了玄武岩纤维布与碳纤维布(CFRP)的加固效果.发现BFRP能够增强板的刚度,降低...

Performance of RC slabs strengthened with BFRP sheets under explosion loading

Basalt fiber reinforced polymer (BFRP) has outstanding comprehensive performance and price superiority.To explore its strengthening effect on the reinforced concrete （RC） structures under explosion loading, a model of BFRP sheet strengthened RC slabs under contact detonation in the air was established with LS DYNA software. The failure process of slabs was simulated with the fluid solid coupled method .The comparison of the failure form and the steel bar stress and displacement between the strengthened slab and the normal one was made.The strengthening effect between BFRP sheet and the carbon fiber reinforced polymer (CFRP) sheet was also compared. It's found that the BFRP sheet has the effect to increase the slab stiffness, reduce rebar stress and local damage. But it also intensifies the damage of the concrete cover. Compared with CFRP, BFRP has almost the same strengthening effect while relatively light cover damage. The result shows that BFRP is an economical and effective strengthening material for RC structures bearing detonation.