Buckling Analysis of Guyed Composite Transmission Poles

Abstract

The buckling loads of guyed modular composite (FRP) transmission poles of various heights and classes are computed using the Gere and Carter Method (GCM) and Linear Buckling Analysis using ANSYS finite element software. Four (4) specific end conditions are investigated: fixed-free, fixed-pinned, pinned-pinned and fixed-fixed ends. To simplify calculations, average values of elastic modulus E and tube thickness t are employed. The buckling loads obtained by the two methods are compared. Given the approximations used in the modelling process, it is observed that there is reasonable agreement between the values for buckling loads obtained by two approaches for all the end conditions, the maximum average discrepancy being about 24.3%. Suggestions for further studies include modelling each pole module explicitly with its specific properties and conducting full-scale lab testing to validate all studies.

Finite Element Modeling of HDPE Utility Poles with Fiberglass Rebars

“…The setup basically consists of a frame to hold/clamp the test specimens, an electric winch and a hydraulic loading facility, digital sensors for recording load and deflection coupled with a computerized data recording system. All pole bending tests were performed per guidelines of ASTM D1036 [23]. The poles were tested as a cantilever with a single lateral load; deflection measurements were made at each load step [5].…”