抗震锚索的开发与应用
|
摘要
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。提出抗震锚索的设计、施工技术与检测验收标准,介绍抗震锚索用于强震区的工程案例。
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.
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.
引文
[1]聂高众,高建国,马宗晋,等.中国未来10～15年地震灾害的风险评估[J].自然灾害学报,2002(1):68-73.
[2]汤涌.汶川大地震边坡工程设施震害分析[D].成都:西南交通大学,2010.
[3]孟芹.地震作用下锚索破坏形式[D].重庆:重庆交通大学,2010.
[4]洪海春,徐卫亚.地震作用下岩体锚固性能研究综述与展望[J].金属矿山,2006(3):5-10.
[5]夏元友,张亮亮,顾金才.预应力锚索抗爆洞室加固效果试验研究[J].工程爆破,2008(3):8-12.
[6]苏华友,张继春.紫坪铺进水口高陡边坡锚索抗爆破振动分析[J].岩石力学与工程学报,2003(11):1916-1918.
[7]陶浩,段红杰,刘建秀.预应力锚具的强度性能破坏研究[J].机械设计,2003(8):13-15.
[8]秋仁东,石玉成,胡明清.预应力锚索加固石窟岩体的地震动力响应研究[J].西北地震学报,2007(1):49-53.
[9]招商局重庆交通科研设计院有限公司.抗震锚索:中国,ZL200910190942.X[P].2010-3-10.
[10]招商局重庆交通科研设计院有限公司.抗震锚索装置:中国,ZL200920128996.9[P].2010-7-21.
[2]汤涌.汶川大地震边坡工程设施震害分析[D].成都:西南交通大学,2010.
[3]孟芹.地震作用下锚索破坏形式[D].重庆:重庆交通大学,2010.
[4]洪海春,徐卫亚.地震作用下岩体锚固性能研究综述与展望[J].金属矿山,2006(3):5-10.
[5]夏元友,张亮亮,顾金才.预应力锚索抗爆洞室加固效果试验研究[J].工程爆破,2008(3):8-12.
[6]苏华友,张继春.紫坪铺进水口高陡边坡锚索抗爆破振动分析[J].岩石力学与工程学报,2003(11):1916-1918.
[7]陶浩,段红杰,刘建秀.预应力锚具的强度性能破坏研究[J].机械设计,2003(8):13-15.
[8]秋仁东,石玉成,胡明清.预应力锚索加固石窟岩体的地震动力响应研究[J].西北地震学报,2007(1):49-53.
[9]招商局重庆交通科研设计院有限公司.抗震锚索:中国,ZL200910190942.X[P].2010-3-10.
[10]招商局重庆交通科研设计院有限公司.抗震锚索装置:中国,ZL200920128996.9[P].2010-7-21.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心