防护工程口部抗爆减震复合结构探讨

Discussion about the explosion- resistant and shock absorbing composite structure for entrance of the protective engineering

根据高技术武器和地震对防护工程口部结构的破坏特点，提出由外锚固层、软回填层、内结构层组成的抗爆减震复合结构。该结构通过钢纤维混凝土喷网层、屈服锚杆、软回填层、钢板-混凝土等结构的组合，可以较好地吸收、耗散能量，明显改善结构受力状态，有效衰减爆炸压力和震动量值，提高防护工程抗侵彻、爆炸、震动能力，兼顾了防护工程平时和战时的安全，从而提高防护工程的综合防护能力。

According to the features of the damage caused by high tech weapons and earthquake at the entrance of the protective engineering, the explosion - resistant and shock absorbing composite structure consisting of external anchor layer, soft backfill layer, and internal structure layer is put forward. The structure is composed of steel fiber reinforced concrete spray -net layer, yield anchor-rod, soft backfill layer, and steel plate -concrete. It can absorb and dissipate energy satisfactorily, improve the stress condition of the structure evidently, reduce explosion pres-sure and shock vibration effectively. The capabilities of the protective engineering to resist penetration, explosion, and shock vibration will be enhanced by using the composite structure. This structure considers safety of the protective engineering both in peacetime and wartime. Thereby the comprehensive protective capability of the protective engineering can be enhanced.