接触网支柱岩石锚杆基础设计

Design of Foundation of Rock Anchor Rod for Overhead Contact Wire System

研究目的:针对岩石区段的接触网支柱基础,利用锚杆将基础与基岩连成整体,形成岩石锚杆基础,降低基础造价,简化施工。研究方法:依据《建筑地基基础设计规范》,充分利用岩石地基自身水平抗力极大,几乎无压缩变形的特点,直接把上部荷载通过支柱传至基岩上,通过锚杆将支柱与岩层连成整体,构成接触网支柱锚杆基础。研究结果:提出接触网支柱岩石锚杆基础计算方法,基础构造及施工做法。

Research purposes： For building mast foundation in rock area for overhead contact wire system, the foundation can be connected together with foundation stone through anchor rod to form anchor rod foundation of mast for overhead contact wire system. In this way, the engineering cost can be reduced and the construction can be simplified. Research methods：According to ＂Design Code for Architecture Foundation＂, the upper load can be directly transferred to the foundation stone by taking full advantage of the features of great horizontal resisting strength of rock subgrade and its seldom deformation caused by compression. In this way, the mast and rock stratum can be integrated through anchor rod and the anchor rod foundation of mast for overhead contact wire system can be formed. Research results：The basic calculation method for foundation of rock anchor rod for overhead contact wire system, foundation structure and its construction method are put forward.