桁架式複合材料節塊結構應用於救災輕便橋之研究
Journal
中國土木水利工程學刊
Journal Volume
32
Journal Issue
8
Pages
683-691
Date Issued
2020
Abstract
Typhoons and earthquakes, which occur frequently in Taiwan, often lead to the washout or collapse of river bridges, thereby causing traffic interruption. In this paper, a truss-type segmental composite temporary rescue bridge is proposed to improve the stiffness of longer span (50 m) bridges. A 50-m-span asymmetric self-anchored truss-type segmental cable-stayed bridge and the autonomous assembly technology proposed for construction are designed and validated. Two construction processes are compared to improve worker safety. The results of this study indicate that (1) the truss-type segmental composite bridge can improve the stiffness of a 50-m-span temporary rescue bridge. (2) autonomous assembly technology for bridge construction significantly improves worker safety and shortens the assembly time of the bridge. (3) the incremental launching method has greater operational efficiency than the cantilever erection method. (4) the incremental launching method can avoid construction of the bridge over a river, thus providing better safety to the workers.
Publisher
中國土木水利工程學會
Type
journal article