桁架式複合材料節塊結構應用於救災輕便橋之研究

STUDY ON TRUSS-TYPE SEGMENTAL COMPOSITE STRUCTURE FOR TEMPORARY RESCUE BRIDGE

葉芳耀(Fang-Yao Yeh) ； 楊耀畬(Yao-Yu Yang) ； 李柏翰(Bo-Han Lee) ； 蕭勝元(Sheng-Yuan Shiao) ； 張家銘(Chia-Ming Chang) ； 張國鎮(Kuo-Chun Chang)

《中國土木水利工程學刊》 32卷8期 (2020/12) Pp. 683-691

https://doi.org/10.6652/JoCICHE.202012_32(8).0002

摘要

颱風洪水地震常造成橋梁損毀，2009年莫拉克颱風造成100餘座橋梁被土石流沖斷，造成山區住宅被孤立，導致緊急救災不易與人員物資難以運送。為能在緊急災變發生時提供快速救援，本研究提出桁架式複合材料節塊結構，解決長跨度複合材料橋梁變形量過大之問題；及救災用橋梁自動化組裝技術與架設方法，提升救災人員於高致災風險環境之作業效能。研究結果顯示：（1）桁架式複合材料節塊組合橋可以提高50米跨度救災便橋的勁度，滿足撓度與跨度比的要求；（2）橋梁自動化組裝施工技術對提高工人安全，縮短救災便橋組裝時間有重要貢獻；（3）橋梁節塊推進工法的施工效率高於懸臂吊裝工法；（4）橋梁節塊推進工法可以避免工人在河面上施工，應該更為安全。

關鍵字

緊急救災 ； 自動化組裝技術 ； 桁架式複合材料節塊 ； 救災用便橋

並列摘要

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.

並列關鍵字

emergency disaster relief ； autonomous assembly technology ； truss-type segmental composite structure ； temporary rescue bridge