李汉孟

摘 要：高电压多回路输电线路钢管杆具有高度高、重量重、强度高和截面大特点，与之相应的基础地脚螺栓也使用得更大更重更多，这就大大增加了钢管杆基础地脚螺栓群安装质量控制难度。文章以佛山佛藤吉南双回路改造一期工程为例，对钢管杆基础地脚螺栓群的定位找正、安装、固定和验收的提出与常规施工方不一样的施工方法，以提高监理对地脚螺栓群安装预埋的质量水平，保证地脚螺栓群在基础混凝土浇筑中不发生偏移，不需要多次微调，混凝土浇筑完成，最终基础实体的地脚螺栓根开尺寸满足设计及验收规范要求，实现脚螺栓群安装精度不影响钢管组立质量控制目标。

关键词：输电线路；钢管杆；地脚螺栓群；质量控制

中图分类号：TM726 文献标志码：A 文章编号：2095-2945（2018）10-0131-02

Abstract： High voltage multi-circuit transmission line steel pipe rods have the characteristics of high height， heavy weight， high strength and large cross-section. The corresponding foundation anchor bolts are also used more and more. This greatly increases the difficulty of installation quality control of foundation bolt group of steel pipe pole foundation. In this paper， taking the first phase of the reconstruction of the double loop in Foshan City as an example， the construction method of locating， straightening， installing， fixing and accepting the anchor bolt group of steel pipe pole foundation is put forward， which is different from that of the conventional construction side， in order to improve the quality level of the supervision to install and bury the anchor bolt group， to ensure that the foundation bolt group does not have the deviation in the foundation concrete pouring， does not need many times fine adjustment， the concrete pouring completes. The final foundation bolt root opening size meets the requirements of design and acceptance code， and the installation accuracy of foot bolt group does not affect the quality control goal of steel pipe group.

Keywords： transmission line； steel pipe rod； anchor bolt group； quality control

架空输电线路的钢管杆单杆结构相对于铁塔具有占地面积小、结构简单、施工方便、維护工作量少的特点，特别是在城市高压架空线路中得到广泛应用。随着城市的发展，用电负荷的快速增长及线行用地的紧张，为了满足供电的需要，政府规划部门及供电部门或电力设计公司更多地选择使用同杆多回路线路，如目前常见的有同杆500kV双回路钢管杆、同杆四回路220kV钢管杆、同杆六回路110kV钢管杆等。电压等级的升高及线路回路的增多，对钢管杆的结构受力和使用要求也越高，为了满足工程的安全和可靠性要求，钢管杆的截面越来越大，其高度和重量也在不断增加。……