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Experimental Verification of Sag Sensitivities using Catenary Model for PPWS Configuration Control in a Suspension Bridge
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 Title & Authors
Experimental Verification of Sag Sensitivities using Catenary Model for PPWS Configuration Control in a Suspension Bridge
Jeong, Woon; Seo, Ju Won; Lee, Sung Hyung;
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 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.
 Keywords
Suspension bridge;PPWS;Configuration control;Catenary model;Support movement;Sag sensitivity equation;
 Language
Korean
 Cited by
 References
1.
Jeong, W., Seo, J. W. and Lee, S. H. (2012b). "Verification test of sag sensitivity using catenary model for configuration control under PPWS erection in a suspension bridge." Proc. of 2012 Annual Conference & Civil Expo, KSCE, pp. 1419-1422 (in Korean).

2.
Jeong, W., Seo, J. W. and Lee, S. H. (2013). "Estimation of sag variation by support movement of catenary cable." Proc. of COSEIK, COSEIK, pp. 381-382 (in Korean).

3.
Jeong, W., Seo, J. W. and Lee, W. P. (2012a). "Development of sag and tension sensitivity estimation method for configuration control under PPWS erection in a suspension bridge." J. of Civil Eng., KSCE, Vol. 32, No. 5A, pp. 255-266 (in Korean). crossref(new window)

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