抗震锚索的开发与应用

汶川地震表明,地震引起塌方,导致交通生命线中断,是阻碍抢险救援的主要原因.调查分析发现,现有预应力锚索锚固结构存在较突出的抗震问题.抗震锚索通过缓冲地震瞬间冲击力、与岩土体协调变形、抵御动荷载等作用,可避免锚固体系在强震条件下发生毁灭性破坏.抗震锚索工作性能试验和现场破坏性试验表明,抗震内锚具满足抗震设计要求.提出抗震...

Development and Application of Anti-seismic Anchor Cables

The Wenchuan earthquake shows that landslide caused by earthquake and subsequent interruption of transportation lifeline are major reasons hindering rescue and relief. Investigation and analysis found outstanding anti-seismic problems exist in anchorage structure of present prestressed anchor cables. The anti-seismic anchor cables can avoid devastating damage to anchorage system under the condition of strong earthquake by buffering instant impact of earthquake, harmonious deformation with rock-soil and resisting dynamic load, etc. Test for working performance of anti-seismic anchor cables and destructive test on site show that anti-seismic internal anchorage satisfies the requirements of seismic design. This paper proposes design, construction techniques and standards of detection and acceptance of anti-seismic anchor cables, and introduces project cases of anti-seismic anchor cables used in areas of strong earthquake.