橋樑基礎沖刷安全監測系統研發

Development of Real-Time Monitoring System for Multi-Hazard Bridge

林詠彬(Yung-Bin Lin) ； 張國鎮(Kuo-Chun Chang) ； 宋裕祺(Yu-Chi Sung) ； 古孟晃(Meng-Huang Gu) ； 李柏翰(Bo-Han Lee) ； 吳志泓(Jyh-Horng Wu) ； 陳倫奇(Lun-Chi Chen) ； 黃俊銘(Chun-Ming Huang) ； 楊智喬(Chih-Chyau Yang) ； 吳建明(Chien-Ming Wu)

《興大工程學刊》 25卷3期 (2014/11) Pp. 85-94

https://doi.org/10.6287/JENCHU.2014.2503.02

摘要

自然災害是一項跨領域並受到國際重視的研究，橋梁是交通的重要樞紐，跨河橋梁損壞造成人命及財產的損失更是橋梁工程最大挑戰，老舊橋梁除有耐震強度普遍不足的問題外，沖刷所導致的基礎裸露更危害橋梁的穩定性與承載能力，洪水沖刷對跨河橋梁安全產生莫大的威脅，本文透過實驗室驗證不同的沖刷監測系統，並考量現地施工環境與洪水衝擊等諸多保護因素，研發橋梁複合災害即時預警監測系統，透過相關地震和洪水沖刷與橋梁基礎的穩定性與安全性能相關係進行分析，藉由無線網路監測系統於實驗室和現地橋梁的數據搜集比對與數值模型的逐次修正，特別是颱洪期間水位高程、水流速度以及沖刷深度的即時量測，期望臺灣可以發展出適用於本土橋梁與流域特性的橋梁危害分析模型，配合即時監測預警系統的建置，提供橋梁與流域的安全。

關鍵字

橋梁 ； 沖刷 ； 無線網路 ； 監測系統

並列摘要

Natural Hazards is an interdisciplinary and international dedicated research. Streams at waterway bridges present significant challenges for bridge engineers. They create highly variable situations and can damage bridge structures in many different ways. Bridge collapses happen suddenly and unpredictably and often lead to tragic loss of human lives. Understanding the processes leading to bridge scour and burial is crucial for hazard assessment. In previous research, our team developed a scour sensor based on wireless and MEMS technologies. The system permits real-time monitoring of water and bed levels along bridge piers. It was successfully deployed on several bridges in Taiwan. The wireless sensor network has been applied widely, and in many fields. In this study, a wireless scour monitoring system has been developed and deployed in the laboratory and the field, respectively. This system can measure the scouring/deposition process and the variations of water levels at a bridge pier. The results indicate that the proposed system has the potential applicability to monitor scour evolution in the field.

並列關鍵字

bridge ； scour ； wireless sensor network ； monitoring system