모형 현수선을 이용한 현수교 PPWS 형상관리를 위한 새그민감도의 실험적 검증 = Experimental Verification of Sag Sensitivities using Catenary Model for PPWS Configuration Control in a Suspension Bridge

다국어 초록 (Multilingual Abstract)

PPWS, a large number of which a main cable of a suspension bridge consists of, must be precisely erected at a target location under construction considering the differences among design conditions. The absolute sag is measured for several PPWSs, which are reference strands and the relative sag is surveyed from them to other PPWSs, which are divided into several groups. And the adjustment of PPWS length is performed to erect it at target configuration. When PPWS is being under erection in a real bridge site, the procedures are as follows; evaluate sag sensitivities according to sag variation factors, calculate an adjustment length of PPWS corresponding to them and adjust a sag of PPWS by controlling the calculated amount of PPWS length. In this study, the differential-related equations of sag sensitivity were proposed for support movement of PPWS. Before site demonstration study of a series of them, we established a catenary model system and accomplished verification tests of them. From test results, the validation of them was done.

참고문헌 (Reference)

1 정운, "현수교 PPWS 가설중 형상관리를 위한 PPWS 새그 및 장력민감도 산정법 개발" 대한토목학회 32 (32): 255-266, 2012

2 Jeong, W., "Verification test of sag sensitivity using catenary model for configuration control under PPWS erection in a suspension bridge" KSCE 1419-1422, 2012

3 Leica Geosystems, "Leica TPS1200+ user manual"

4 Jeong, W., "Estimation of sag variation by support movement of catenary cable" COSEIK 381-382, 2013

5 Lockwood, E. H., "A book of curves" Cambridge University Press 1961