scholarly journals Maintenance Planning of Deteriorating Highway Bridges with Seismic Risk

2012 ◽  
Vol 61 (2) ◽  
pp. 133-140 ◽  
Author(s):  
Hisaya FUJII ◽  
Shinya TANAKA ◽  
Hitoshi FURUTA ◽  
Masahiro DOGAKI
Keyword(s):  
Seismic Risk ◽  
Highway Bridges ◽  
Maintenance Planning

Seismic Risk Assessment of Highway Bridges in Clark County, Nevada

2007 ◽  
Author(s):  
Arya Ebrahimpour ◽  
David B. Porter ◽  
Ronald L. Sack ◽  
Barbara Luke
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Highway Bridges ◽  
Seismic Risk Assessment ◽  
Clark County

scholarly journals Digital Twin Aided Vulnerability Assessment and Risk-Based Maintenance Planning of Bridge Infrastructures Exposed to Extreme Conditions

2021 ◽  
Vol 13 (4) ◽  
pp. 2051 ◽  
Author(s):  
Sakdirat Kaewunruen ◽  
Jessada Sresakoolchai ◽  
Wentao Ma ◽  
Olisa Phil-Ebosie
Keyword(s):  
Life Cycle ◽  
Highway Bridges ◽  
Weather Conditions ◽  
Relevant Information ◽  
Maintenance Planning ◽  
Entire Life ◽  
Entire Life Cycle ◽  
Bridge Model ◽  
Digital Twins ◽  
Inspection And Maintenance

Over the past centuries, millions of bridge infrastructures have been constructed globally. Many of those bridges are ageing and exhibit significant potential risks. Frequent risk-based inspection and maintenance management of highway bridges is particularly essential for public safety. At present, most bridges rely on manual inspection methods for management. The efficiency is extremely low, causing the risk of bridge deterioration and defects to increase day by day, reducing the load-bearing capacity of bridges, and restricting the normal and safe use of them. At present, the applications of digital twins in the construction industry have gained significant momentum and the industry has gradually entered the information age. In order to obtain and share relevant information, engineers and decision makers have adopted digital twins over the entire life cycle of a project, but their applications are still limited to data sharing and visualization. This study has further demonstrated the unprecedented applications of digital twins to sustainability and vulnerability assessments, which can enable the next generation risk-based inspection and maintenance framework. This study adopts the data obtained from a constructor of Zhongcheng Village Bridge in Zhejiang Province, China as a case study. The applications of digital twins to bridge model establishment, information collection and sharing, data processing, inspection and maintenance planning have been highlighted. Then, the integration of “digital twins (or Building Information Modelling, BIM) + bridge risk inspection model” has been established, which will become a more effective information platform for all stakeholders to mitigate risks and uncertainties of exposure to extreme weather conditions over the entire life cycle.

Optimal Network-Level Bridge Maintenance Planning Based on Minimum Expected Cost

2000 ◽  
Vol 1696 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Dan M. Frangopol ◽  
Emhaidy S. Gharaibeh ◽  
Jung S. Kong ◽  
Masaru Miyake
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Highway Bridges ◽  
Maintenance Cost ◽  
Maintenance Planning ◽  
Expected Cost ◽  
Bridge Maintenance ◽  
Optimal Network ◽  
Lifetime Reliability ◽  
Minimum Expected Cost

The goal of bridge management is to determine and implement the best possible strategy that ensures an adequate level of safety at the lowest possible life-cycle cost. Although this is generally recognized, the integration of life-cycle cost analysis with bridge reliability analysis has been very limited. Moreover, this has been formulated and illustrated only for individual bridges. A framework for optimal network-level bridge maintenance planning based on minimum expected cost is presented. The goal is the minimization of the expected maintenance cost of a bridge stock with maintenance of the lifetime reliability of each bridge above an acceptable (target) level. The approach is illustrated for a stock of realistic highway bridges. Individual bridges in this stock have different ages, and their reliabilities are time dependent. The framework offers a rational basis for optimizing the resource allocation for management of a stock of gradually deteriorating bridges based on balancing life-cycle maintenance cost and lifetime reliability. This has important practical implications in the development of the optimal management strategy for the bridge stock.

Seismic Strengthening of Column-Pier-Cap Connections

1998 ◽  
Vol 1624 (1) ◽  
pp. 93-100 ◽  
Author(s):  
David H. Sanders ◽  
M. Saiid Saiidi ◽  
Troy Martin
Keyword(s):  
Energy Dissipation ◽  
Seismic Risk ◽  
Plastic Hinge ◽  
Joint Damage ◽  
Highway Bridges ◽  
Joint Region ◽  
Steel Jacket ◽  
Energy Dissipation Capacity ◽  
The 1960S ◽  
Strengthening Technique

Many bridges constructed in the 1960s in regions of high seismic risk have column–pier-cap connections with inadequate column bar development and no shear reinforcement in the joint region. The study described in this paper focuses on highway bridges built on Interstate 80 in the Reno, Nevada, area during the 1960s. Two 0.4-scale specimens representing the essential features of the column–pier-cap connections in these bridges were constructed and tested. One test showed that the asbuilt specimen had little energy dissipation capacity and failed at less than 1 percent drift. A second specimen was used to test a potential strengthening technique. The technique included increasing pier-cap depth, adding a concrete bolster to the joint, and placing a steel jacket around the column. After strengthening, a plastic hinge formed in the column, the joint damage was minimized, and the energy dissipation capacity increased by a factor of 5.

Seismic Risk Assessment Of Highway Bridges In Clark County, Nevada

2007 ◽  
Author(s):  
Arya Ebrahimpour ◽  
David B. Porter ◽  
Ronald L. Sack ◽  
Barbara Luke
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Highway Bridges ◽  
Seismic Risk Assessment ◽  
Clark County
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