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Title |
A Study on Controlling the Negative Reaction of Cable Stayed Bridge Considering Constructability and Economy : Vam Cong Cable Stayed Bridge in Vietnam
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Keywords |
밤콩교량 ; 베트남의 사장교 ; 부반력 ; 경간비 ; 시공성 ; Vam Cong bridge ; Cable stayed bridge in Vietnam ; Negative reaction ; Span ratio ; Constuctability |
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Abstract |
Cable stayed bridge is supported by cables and the negative reaction occurs by cables at anchor pier. To solve this problem, the proper side span ratio and the negative reaction measure of anchor pier are needed. And structural system of cable stayed bridge is determined by solution of the negative reaction as installation of the intermediate pier, counterweight and so on. In feasibility study, Vam Cong bridge was planned as 5 span cable stayed bridge. However, it was changed to 3 span cable stayed bridge in detailed design because of constructability and economy. The intermediate pier was excluded in order to improve the constructability, and side span ratio increased to control the negative reaction. As a result, Vam Cong bridge secure constructability, structural safety, and efficiency.
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