预应力对穿锚索锚梁在宋家沟大桥桥台加固中的应用

APLICATION OF OPTHREAD-PRESTRESSED STRAND ANCHOR AND ANCHOR BEAM TO THE ABUTMENT REINFORCEMENT IN SONGJIAGOU GREAT BRIDGE

介绍工程概况、工程地质条件及整治方案 ,阐明了施工任务及要求 ,叙述预应力对穿锚索锚梁的施工工艺流程 ,重点总结了钻进成孔、张拉锁定及灌浆的施工经验和方法 ,实践证明运用预应力对穿锚索锚梁加固宋家沟大桥桥台是成功的 ,为桥梁类似病害的整治提供了实践经验。

This paper introduces the survey of the engineering, condition of the engineering geology and scheme of the regulation,illuminate the tasks and requirements of the construction,state the process flow of Opthread-prestressed Strand Anchor and Anchor beam,and emphasis on generalizing the experience and method of Pore-forming,Sketching and Grouting,which proves by the engineering experience that it is successful to reinforce the Abutment of Songjiagou Great Bridge with Opthread-prestressed Strand Anchor and Anchor beam.