| dc.description.abstract | Wugu to Yangmei Freeway widening project is the second widening section of the No. 1 National Freeway, and is expected to relieve the serious traffic congestion in Taoyuan area on the Freeway. This widening project, 40 kilometers in length, mostly elevated bridges and constructed by the Freeway on both sides, was commenced on November 21, 2009 and finished in April 2013. To avoid a ＂debris avalanche slide highly sensitive area＂ of the north bound side of the Freeway between 37k+400 to 39k+100, the northern bound section was designed to cross the Freeway to join the elevated southern bound bridge and then cross the Freeway, again, back to the northern bound in that area. In order to avoid impacts on traffic, no piers were allowed in both cross sections; thus, long-span bridges are required.
This research focuses on a special rotational construction method used for constructing the elevated bridge crossing the Freeway between Linkou and Gueishan in the widening project. Characteristics of the special construction method, such as limitations, duration, and costs were emphasized. The construction duration and costs were compared to that of a different construction method which was originally designed. Special reminders during construction using such a rotational construction method were also concluded. Results of this research can serve as a useful reference for similar projects in the future. | en_US |