Design and Construction of Needle Beam Trolley for Emergency Curvilinear Water Tunnel
In construction of water conservancy infrastructure,the emergency curvilinear water conservancy tunnel has the characteristics of multiple bends and sharp bends.The common needle beam trolley shows many problems in construction of this kind of tunnel project,such as the bend wall,compression deformation,the adaptability of traditional construction equipment and technology needs to be solved urgently.Based on the lining construction of Wangjiangyan Tunnel,the first phase of the North Main Canal project in Xiangjiaba irrigation area of Jinsha River,and on the basis of the existing design technology of the traditional full round needle beam trolley,the research on improving the length of single lining,the overall rapid disassembly,the optimization of the structural form,the change of the mode of release,and the realization of high universal was carried out.The full round needle beam trolley of the emergency curvilinear water conservancy tunnel was developed,the construction method under different conditions of the trolley was innovated,which solved the problems such as the tunnel wall being impassable when the trolley was walking on the curve,the trolley being disassembled and installed repeatedly when passing through the emergency curvilinear tunnel,and the reverse occlusion of the formwork between the upper and lower side molds under stress after the completion of lining,and effectively promoted the technical innovation in the design of the construction equipment of the emergency curvilinear tunnel.The practical application results show the developed full round needle beam trolley and its related construction technology greatly improve the construction efficiency,reduce the construction cost,ensure the construction safety and engineering quality.
water conservancy projecttunnelstrolleyformworkdesignconstruction
NETL
NSTL
万方数据
维普
