玻璃纤维(GFRP)-钢纤维混凝土组合衬砌抗爆性能分析

Analysis of Explosion Resistance of GFRP Rteel Fiber Reinforced Concrete Composite Lining

提出一种新型的玻璃纤维(GFRP)-钢纤维混凝土组合衬砌结构,由带有钢纤维混凝土外包GRFP型材板组成,钢纤维体积含量约3%。为掌握新型衬砌结构的在爆炸作用下的抗爆性能,采用Ansys/Ls-dyna,利用流固耦合算法,对新型的GFRP-钢纤维混凝土组合衬砌结构和普通混凝土衬砌结构在爆炸作用下的动力响应结果分析对比,结果显示:新型的GFRP-钢纤维混凝土组合衬砌结构,通过GFRP肋板以及内表面的粘砂处理使GFRP板与混凝土紧密结合,充分发挥GFRP、钢纤维混凝土二者抗爆炸冲击性能叠加效应,较普通钢筋混凝土衬砌结构具有更好的抗爆炸冲击性能,且新型衬砌结构顶部、肩部受到的冲击作用较强,上述部位最易受损或破坏,结构设计时候需要重点加强。

A new type of glass fiber reinforced (GFRP)-steel fiber reinforced concrete composite lining structure is proposed, which is composed of GFRP plate with steel fiber reinforced concrete, the volume content of steel fiber is about 3%. In order to master the anti-explosive performance of the new lining structure under explosion, the dynamic response results of the new GFRP steel fiber reinforced concrete composite lining structure and the ordinary concrete lining structure under explosion are analyzed and compared by using ANSYS/LS DYNA and fluid structure coupling algorithm. The results show that through the sand bonding treatment on the GFRP rib plate and the inner surface, the GFRP plate is closely combined with concrete, so the new GFRP steel fiber reinforced concrete composite lining structure can give full play to the superposition effect of GFRP and steel fiber reinforced concrete on explosion impact resistance, which has better explosion impact resistance than ordinary reinforced concrete lining structure. In addition, the top part and shoulder of the new lining structure are subjected to stronger impact, so these areas are most vulnerable to be damaged or destroyed, therefore the structural design needs to be strengthened.