Sprayed concrete construction technology applications in bridge reinforcement

摘要

The Sprayed concrete construction technologies are introduced to strengthening the bridge, analyzing its application scope and corresponding characteristics. The method of prestressed bars under support type — sprayed concrete reinforcement is easy to construct and guarantee the construction quality, with good ties between the original bridge and felt, reducing the loss of prestress, also preventing levers of corrosion, increasing the cross-sectional area of the beams, and raising bearing capacity of original bridge. The method of PC wire bundle—sprayed concrete reinforcement technique is well used in simple equipments without reducing obstacle clearance; and if taking half of the bridge construction measures and sprayed concrete as protecting enlarge layer of bundled steel wires, the bridge can be reinforced without breaking the traffic.