Title

受沖刷橋梁可靠度設計方法研究

Translated Titles

Study on the Reliability-based Design Method for Scoured Bridges

DOI

10.6342/NTU.2015.02295

Authors

劉俊仁

Key Words

橋梁沖刷 ; 等效沖刷作用載重 ; 沖刷易損性曲線 ; 多重災害之載重抗力係數設計法 ; Bridge scour ; Equivalent scour load ; Scour fragility curve ; Multi hazard-LRFD

PublicationName

臺灣大學土木工程學研究所學位論文

Volume or Term/Year and Month of Publication

2015年

Academic Degree Category

碩士

Advisor

張國鎮

Content Language

繁體中文

Chinese Abstract

對於跨河橋梁而言在各種造成橋梁發生破壞之原因中,國內外研究均指出沖刷現象為主要原因之一。而現有的橋梁設計規範中,尚未以載重型式針對沖刷效應進行適當設計考量,若考量多重災害之可靠度設計,應用載重抗力係數設計法時將產生設計載重型式不一致之困擾。本研究應用創新思維,將沖刷效應轉換為等值載重之形式,並將等值載重放入載重組合後,得到直接之設計方法。 本研究接續團隊歷年研究成果,由等效沖刷載重模式出發。將此等效沖刷作用載重模式應用至沖刷易損性曲線之建置及多重災害之載重抗力係數設計法中,盼能在考量沖刷事件之橋梁評估及設計提供幫助。以蒙地卡羅法進行亂數分析,配合條件機率計算橋梁破壞機率以建置沖刷易損性曲線;而多重災害之載重抗力係數設計法則以可靠度分析來完成。 建置出沖刷易損性曲線後,工程師可由沖刷易損性曲線迅速判斷橋梁沖刷深度所對應到的破壞機率。而多重災害之載重抗力係數設計法之載重係數,則使用在跨河橋梁設計上,以求合乎可靠度分析邏輯之設計流程。

English Abstract

There are many reasons that make crossing bridge failure, Domestic and international studies have pointed out that one of the main reasons is scour event. In the existing bridge design codes, the scour effect is not considered as a load effect. When considering multiple-hazard reliability design, engineers will face the problem with load and resistance factor design which didn't consider scour effect as a load. This study offer a creative thinking that transfer the scour effect into load pattern and put in load combinations, obtain a more direct method of design. The research team continues the previous results, start from the concept of equivalent scour load. We purposed two applications of equivalent scour load, one is build the scour fragility curve, the other is calculate the load factors of multiple-hazard load and resistance factor design. The objective is to help engineers to evaluate and design crossing bridge with scour event. Using Monte Carlo method to simulate hazard, and evaluate the bridge failure probability with the conditional probability. Finally we can get scour fragility curve. To calculate the load factors in multiple-hazard load and resistance factor design by reliability analysis. After develop scour fragility curve, engineers can quickly obtain the failure probability by scour depth. The load factor of multiple-hazard load and resistance factor design will be used in design crossing bridge, which make design procedure smoother.

Topic Category 工學院 > 土木工程學研究所
工程學 > 土木與建築工程
Reference
  1. [2] American Association of State Highway and Transportation Officials. “AASHTO LRFD Bridge Design Specifications, Fifth Edition” 2010.
    連結:
  2. [4] Zach Liang, and George C. Lee. “Bridge Pier Failure Probabilities under Combined Hazard Effects of Scour, Truck and Earthquake. Part I: Occurrence Probabilities” Journal of Earthquake Engineering and Engineering Vibration, Vol. 12, Issue 2. 2013.
    連結:
  3. [5] Zach Liang, and George C. Lee. “Bridge Pier Failure Probabilities under Combined Hazard Effects of Scour, Truck and Earthquake. Part II: Failure Probabilities” Journal of Earthquake Engineering and Engineering Vibration, Vol. 12, Issue 2. 2013.
    連結:
  4. [7] Zach Liang, and George C. Lee. “Towards multiple hazard resilient bridges a methodology for modeling frequent and infrequent time-varying loads Part I” Journal of Earthquake Engineering and Engineering Vibration, Vol. 11, Issue 3. 2012.
    連結:
  5. [8] Zach Liang, and George C. Lee. “Towards multiple hazard resilient bridges a methodology for modeling frequent and infrequent time-varying loads Part II” Journal of Earthquake Engineering and Engineering Vibration, Vol. 11, Issue 3. 2012.
    連結:
  6. [9] 財團法人台灣營建研究院,「鐵路橋梁過河沖刷段橋墩與基礎結構系統檢測技術之研究」, 2008。
    連結:
  7. [10] 台灣世曦工程顧問股份有限公司,「橋墩即時沖刷深度警戒值與行動值之研訂」,2010。
    連結:
  8. [12] Parker, Gene W., Lisa Bratton, and David S. Armstrong. “Stream Stability and Scour Assessments at Bridges in Massachusetts” The Survey, 1997.
    連結:
  9. [14] Jean-Louis Briaud, Francis C. K. Ting, H. C. Chen, Rao Gudavalli, Suresh Perugu, and Gengsheng Wei. “SRICOS: Prediction of Scour Rate in Cohesive Soils at Bridge Piers” Journal of Geotechnical and Environmental Engineering, Vol. 125, No. 4, 1999.
    連結:
  10. [17] Peggy A. Johnson, and Daniel A. Dock. “Probabilistic Bridge Scour Estimates” Journal of Hydraulic Engineering, Vol. 124, No. 7, 1998.
    連結:
  11. [19] Azadeh Alipour, Behrouz Shafei, and Masanobu Shinozuka. “Reliability-Based Calibration of Load and Resistance Factors for Design of RC Bridges under Multiple Extreme Events: Scour and Earthquake” Journal of Bridge Engineering, Vol. 18, No. 5, May 1, 2013.
    連結:
  12. [20] Alfredo H-S. Ang, Wilson H. Tang. “Probability Concepts in Engineering Planning and Design, Volume I-Basic Principles” Wiley, 1975.
    連結:
  13. [21] 沈明毅,「樁基礎縮尺橋梁模型之沖刷易損性曲線建置試驗研究」,國立台灣大學碩士論文,2013。
    連結:
  14. [24] 陳能鴻,「單垮樁基礎橋梁模型之振動台實驗研究」,國立台灣大學碩士論文,2013。
    連結:
  15. [26] ASTM Standard D4253-93. “Standard Test Methods for Maximum Index Density and Unit Weight of Soils using a Vibration Test” Annual Book of ASTM Standards. ASTM International, West Conshohocken, PA, 2000.
    連結:
  16. [27] ASTM Standard D4254-91. “Standard Test Methods for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density” Annual Book of ASTM Standards. ASTM International, West Conshohocken, PA, 2000.
    連結:
  17. [31] Yin-Nan Huang. “Performance Assessment of Conventional and Base-isolated Nuclear Power Plants for Earthquake and Blast Loadings” ProQuest, 2008.
    連結:
  18. [32] 陳志豪,「考量等效沖刷載重之橋梁可靠度設計方法研究」,國立台灣大學碩士論文,2014。
    連結:
  19. [33] A. Alipour. “Performance Assessment of Highway Bridges Under Earthquake and Scour Effect” , 2012.
    連結:
  20. [37] Reese, L. C., W. R. COX, AND F. D. KOOP, “Analysis of Laterally Loaded Piles in Sand.” Proceeding, Offshore Technology Conference, Houston, Texas, Vol. II, Paper No.2080, 1974, 99.473-484
    連結:
  21. [1] 姚乃嘉,黃榮堯,葉啟章,蔡閔光,「第二代台灣地區橋梁管理資訊系統建置規畫」,交通運輸研究所,2013
  22. [3] Andrzej S. Nowak. “Calibration of LRFD Bridge Code” Journal of Structural Engineering, Vol. 121, No. 8, 1995.
  23. [6] Zach Liang. “Principles and Approaches for Multi-Hazard (MH) LRFD” 7th National Seismic Conference on Bridge and Highways. Keynote Speech, 2013.
  24. [11] Shirole, A. M., and R. C. Holt. “Planning for a Comprehensive Bridge Safety Assurance Program” Transportation Research Record 1290, 1991.
  25. [13] 林呈,「本省西部重要河川橋梁橋基災害分析與橋基保護工法資料庫系統之建立」,交通部運輸研究所專題研究計畫成果報告,1998。
  26. [15] Laura C. Bolduc, Paolo Gardoni, and Jean-Louis Briaud. “Probability of Exceedance Estimates for Scour Depth around Bridge Piers” Journal of Geotechnical and Environmental Engineering, Vol. 134, No. 2, February 1, 2008.
  27. [16] 交通部,「公路排水設計規範」,2008。
  28. [18] Jean-Louis Briaud, Paolo Gardoni, and Congpu Yao. “Statistical, Risk, and Reliability Analyses of Bridge Scour” Journal of Geotechnical and Geoenvironmental Engineering, Vol. 140, No. 2. 2014.
  29. [22] 台灣高鐵,「高鐵設施容許變形值一覽表」,2011。
  30. [23] FHWA “Principles of Multiple-Hazard Design for Highway Bridges”, 2013
  31. [25] ASTM Standard D3080-98. “Standard Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions” Annual Book of ASTM Standards. ASTM International, West Conshohocken, PA, 2000.
  32. [28] Applied Technology Council ATC-32. “Improved Seismic Design Criteria for California Bridges: Provisional Recommendations” Redwood City, California.
  33. [29] 蔡益超,「公路橋梁耐震性能設計規範研究」,交通部臺灣區國道新建工程局,2011。
  34. [30] Ghosn, M., F. Moses, & Wang, J. “NCHRP Report 489: Design of Highway Bridges for Extreme Events” Transportation Research Board, 2003.
  35. [34] 經濟部水利署中區水資源局,「大度攔河堰計畫管線工程詳細地況調查」,2009
  36. [35] 交通部運輸研究所,「訂定跨河橋梁橋基沖刷檢測作業規範(草案)之研究」,2011
  37. [36] 苟昌煥,「混凝土橋梁耐震能力評估與資料庫系統之建立」,中華大學碩士論文,2003。