Cast-in-place composite shielding shell with ultra-high performance concrete (uhpc)

Abstract

The purpose of the present invention is to disclose a cast-in-place composite shielding shell with ultra-high performance concrete (UHPC), comprising an UHPC layer, rigid dismantling-free formworks, a RC layer, and a back anti-crack panel; the rigid dismantling-free formworks are disposed between the UHPC layer and the RC layer, and the RC layer is disposed between the UHPC layer and the back anti-crack panel; the RC layer and the UHPC layer are connected and fixed to each other by means of connectors. Compared with the prior art, the UHPC layer has higher strength and toughness, and is not prone to breakage and splashing under high-speed impact, and the back anti-crack panel prevents the presence of scabs on the back, and can better maintain the overall stress performance of the impacted site, thereby reducing damage to a main structure caused by the impact of a projectile, thus achieving the purpose of the present invention.

1 . A cast-in-place composite shielding shell, comprising an ultra-high performance concrete (UHPC) layer, rigid dismantling-free formworks, a RC layer, and a back anti-crack panel, wherein the rigid dismantling-free formworks are disposed between the UHPC layer and the RC layer, and the RC layer is disposed between the UHPC layer and the back anti-crack panel; and the RC layer and the UHPC layer are connected and fixed to each other by means of connectors. 
     
     
         2 . The cast-in-place composite shielding shell according to  claim 1 , wherein studs are welded to the back anti-crack panel, and the back anti-crack panel is connected to the RC layer through the studs. 
     
     
         3 . The cast-in-place composite shielding shell according to  claim 1 , wherein the UHPC layer is casted with ultra-high performance concrete and is configured with constructional steel reinforcements. 
     
     
         4 . The cast-in-place composite shielding shell according to  claim 1 , wherein the RC layer is casted with ordinary concrete and is configured with RC layer main reinforcements and RC layer tension reinforcements. 
     
     
         5 . The cast-in-place composite shielding shell according to  claim 1 , wherein the rigid dismantling-free formworks are arranged in horizontal and vertical directions with staggered seams. 
     
     
         6 . The cast-in-place composite shielding shell according to  claim 1 , wherein the rigid dismantling-free formworks are rigid formworks for industrial buildings. 
     
     
         7 . The cast-in-place composite shielding shell according to claim + 2 , wherein the studs are made of high-strength carbon steel or low alloy steel. 
     
     
         8 . The cast-in-place composite shielding shell according to  claim 4 , wherein the RC layer main reinforcements and the RC layer tension reinforcements, are hot-rolled ribbed steel reinforcements for industrial buildings, comprising HRB400E steel reinforcements. 
     
     
         9 . The cast-in-place composite shielding shell according to  claim 1 , wherein the connectors pass through the rigid dismantling-free formworks and are connected with the UHPC layer and the RC layer. 
     
     
         10 . The cast-in-place composite shielding shell according to  claim 1 , wherein the connectors comprise tension reinforcements and bolts. 
     
     
         11 . The cast-in-place composite shielding shell according to  claim 3 , wherein the constructional steel reinforcement are hot-rolled ribbed steel reinforcements for industrial buildings, comprising HRB400E steel reinforcements.