钢管塔法兰底板下的混凝土立柱局部受压

摘要

According to《Technical Regulation of design for tower and pole structure of overhead transmission line》(DL/T5154-2002),the strength analysis of the square tower foot plate under compression should be calculated with the uniform reaction force(Putting aside the correctness of this view), in no longer checking the concrete local compression under the tower bottom plate;steel tube tower foot flange plate is an annular area of the base plate and the thickness of the plate is often less than the square tower foot plate, which concrete local compression of the calculation were not listed in the present Code and Technical regulations;for"1000kV Huainan-Shanghai (Anhui Power East) transmission line ", the project was made up of double-loop steel tube tower, the foot flange bolts using a small diameter of specifications and more number, with the calculation method proposed in this paper, which can meet the local compression of the concrete column under the tower feet.%现行《架空送电线路杆塔结构设计技术规定》(DL/T5154-2002)，对方型塔脚底板受压时按照均布反力验算底板的强度(暂且不论此观点的正确性)，在均布反力的作用下，不再验算塔脚板下混凝土立柱的局部受压；而钢管塔的地脚法兰板为圆环状，底板的面积和板的厚度往往小于方型塔脚底板，其混凝土局部受压的计算在现行的规范和规定中均未列出；“1000kV淮南-上海(皖电东送)输电线路工程”全线为双回路钢管塔，在地脚法兰的螺栓采用小规格多数量，用本文提出的计算方法，可满足塔脚法兰底板下混凝土立柱的局部受压。