ANALISA RESPON STRUKTUR MENARA PEMANCAR TIPE “MONOPOLE“ 120 m AKIBAT BEBAN ANGIN RENCANA DENGAN PERIODE ULANG 10 TAHUNAN DI STASIUN BADAN METEOROLOGI DAN GEOFISIKA SEMARANG

Abstract

Tower is one of the facility to support signal which is influenced by the elevation factor. For a tower at high elevation, the influence of wind will be very significant to the structure. Therefore, wind site survey should be conducted prior to tower design. The type of tower considered is tapered monopole of 120 m high constructed at Meteorology and Geophysics Station, Semarang. The measurement of anemometer and data analysis resulting in wind velocity of 10-year return period. It was obtained that the maximum wind velocity was 100.8 km/hour or equivalent to 28 m/sec and this will the input for the following analysis. The upper structure analysis is carried out with the help of MsTower which is referred to EIA/TIA-F and LRFD concept. With input of maximum velocity obtained from survey, the tower was analyzed for internal forces. The axial forces is 115.0466 ton and moment about x-axis of 16.00 ton-m.