预应力格网锚固技术-一种新的边坡治理加固技术

预应力格网锚固方法是用于边坡加固工程中的一种新型、可靠的工法。该技术采用压力分散型锚索,锚孔外伸绞线与上下左右相对应锚孔过来的绞线在中间部位对接张拉,省去了外锚墩,可重复张拉。它由无黏结钢绞线纵、横交叉布置成格网,节点处为锚索孔或张拉端,二者均呈梅花型布置。这种复合式边坡锚固结构,施工简便,它克服了以往钢筋混凝土框架梁锚固结构的易裂缝、易变形和施工困难等缺点,充分利用高强、低松弛无黏结钢绞线的强度,将轻质、柔性的受拉格网和压力分散型锚索结合成一个整体,能够得到更有效、更安全的锚固效果。以上优点将会使本项技术在边坡稳定治理中得到更为广泛的应用。

Prestressed grid anchorage technology for slope and landslide treatment

Prestressed grid anchorage is a new and reliable engineering technology applied in slope and landslide treatment. This technology utilizes pressure-dispersion tensile reinforcing bars, of which the wires extending from anchor holes are butted with the relative wires from all direction in the middle position and then tensioned together. Under this situation,outside anchor piers are not needed,and it can be tensioned repeatedly. Both of grid and node showed a plum-type layout. This composite slope anchorage structure is simple for construction, which overcomes such disadvantages of cast reinforced concrete frame beams as easy cracking, easy deformation and difficult construction, and ensure that anchoring effect can be achieved. Those advantages can get this technology to be applied in more slope treatment projects.