Framework type external prestress anti-fatigue steel tower structure

Abstract

The invention discloses a framework type external prestress anti-fatigue steel tower structure. The framework type external prestress anti-fatigue steel tower structure comprises a plurality of steelpipe columns, wherein the steel pipe columns are connected into a tower column through flanges and bolts from bottom to top; an upper end flange plate and a lower end flange plate are arranged at thetop end and the bottom end of each steel pipe column respectively; a prestress anchor cable is arranged outside each steel pipe column; an upper anchor point of the prestress anchor cable outside eachsteel pipe column penetrates through the upper end flange plate of the steel pipe column and the lower end flange plate of the adjacent previous steel pipe column and is fixed above the lower end flange plate of the adjacent previous steel pipe column through an anchor head; and a lower anchor point of the prestress anchor cable outside each steel pipe column penetrates through the lower end flange plate of the steel pipe column and the upper end flange plate of the adjacent next steel pipe column and is fixed below the upper end flange plate of the adjacent next steel pipe column through ananchor head. According to the steel tower structure, the prestress anchor cables are mounted outside the steel pipe columns, so that the steel tower structure is simple and convenient to mount and convenient to maintain.

Description

technical field [0001] The invention belongs to the technical field of towering steel structures, and in particular relates to a frame-type externally prestressed anti-fatigue steel tower structure. Background technique [0002] With the development of high-rise steel structures and wind power towers, in view of the significant fatigue effect of high-rise steel structures, especially wind power towers, under the action of wind load and mechanical operation, a framed steel structure tower is used to improve the utilization of its lower materials rate and overall stiffness, but the fatigue of steel structures has become a limiting condition for the full utilization of structural materials. In order to improve the utilization rate of materials, the prestressed frame tower structure can keep the steel pipe column in a state of compression under normal working conditions. Except for the working conditions under extreme weather, there is no tensile stress in the steel pipe column,...

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Problems solved by technology

At present, the internal prestressing method is generally used to keep the steel pipe column in a state of compression under normal operating conditions, but the internal prestressing requires that the stay cable or anchor cable be passed inside the steel pipe column, and the construction and installation are cumbersome.

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