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Estimating Service-Life Deterioration of RC Bridges Due to Multi-hazards in Barak Valley Region, Assam, India
The present study discusses the amalgamation of the deterioration (aging) hazard along with earthquake hazards directly affecting in the bridges of Barak valley (Assam). In the proposed approach, the Weibull parameter employed for determining hazard function ha(t) of the bridges due to aging, however, active faults with their PGA values extracted, and responsible for generating higher magnitude of earthquake in the region identified as well as the mean annual rate of exceedance for different magnitude (λm) calculated. The combination of deterioration due to aging and earthquake hazard rate provides how bridges are affected by maturity and sudden violent shock of the ground in a seismically active prone region. The combined hazard function shows a significant reduction in service life having an increase in hazard rate for different magnitudes (>5, >6, >7, and >8). Further, the Northeast region of India is prone to earthquakes of higher magnitudes, and the area is tectonically active. Numerous researches demonstrated in the past to estimate the multi-hazards effects on the structures. Indeed, such assessment has not been attempted in the NEI region; hence, this proposed approach and the selected objectives would provide significant ideas and facts about the condition of bridges to make rational decisions for the bridge management authorities in terms of safety, rehabilitation, repair, and inspection of the bridges available in the Barak valley region.
Estimating Service-Life Deterioration of RC Bridges Due to Multi-hazards in Barak Valley Region, Assam, India
The present study discusses the amalgamation of the deterioration (aging) hazard along with earthquake hazards directly affecting in the bridges of Barak valley (Assam). In the proposed approach, the Weibull parameter employed for determining hazard function ha(t) of the bridges due to aging, however, active faults with their PGA values extracted, and responsible for generating higher magnitude of earthquake in the region identified as well as the mean annual rate of exceedance for different magnitude (λm) calculated. The combination of deterioration due to aging and earthquake hazard rate provides how bridges are affected by maturity and sudden violent shock of the ground in a seismically active prone region. The combined hazard function shows a significant reduction in service life having an increase in hazard rate for different magnitudes (>5, >6, >7, and >8). Further, the Northeast region of India is prone to earthquakes of higher magnitudes, and the area is tectonically active. Numerous researches demonstrated in the past to estimate the multi-hazards effects on the structures. Indeed, such assessment has not been attempted in the NEI region; hence, this proposed approach and the selected objectives would provide significant ideas and facts about the condition of bridges to make rational decisions for the bridge management authorities in terms of safety, rehabilitation, repair, and inspection of the bridges available in the Barak valley region.
Estimating Service-Life Deterioration of RC Bridges Due to Multi-hazards in Barak Valley Region, Assam, India
Springer Tracts in Civil Engineering
Kolathayar, Sreevalsa (editor) / Pal, Indrajit (editor) / Chian, Siau Chen (editor) / Mondal, Arpita (editor) / Das, Joydeep (author) / Sil, Arjun (author)
2021-11-22
17 pages
Article/Chapter (Book)
Electronic Resource
English
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