Abstract: According to the meteorological conditions in littoral typhoon areas, the designed load of a lattice FRP transmission pole is calculated under high wind condition, and the structural arrangement pattern and member sizes of the FRP transmission pole are determined. With consideration of the large deformation and aging effects of the FRP transmission poles in their service period, the general finite element analysis software(ANSYS) is used to make a structural analysis of the lattice FRP transmission pole. Comparing with the conventional reinforced concrete transmission pole, the weight of the FRP transmission pole can be reduced over 60%. In order to check the bearing capacity of the lattice FRP transmission pole, prototype tests are conducted respectively under 100% designed load and overloading condition with 90 degree high wind load. The displacements of the pole body along height direction and the strains at typical member sections are obtained and compared with the calculated displacements at the pole top as well as the stresses of main members by FEA method. It is indicated that when the testing load is less than 250% of the designed wind load, all the members are in linear elastic state with the maximum stress of the main members being 159.8 MPa, much lower than the yield stress of 300 MPa for FRP; the displacements at the pole top as well as the stresses of the main members calculated by FEA model are basically consistent with the testing values; when the testing load is over 260% of the designed wind load, shear failure occurs on the hole wall at the bottom of the lattice FRP transmission pole.

Key words: transmission pole, lattice, fiber reinforced polymer, D-type section, prototype test