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Reliability of Concrete Masonry Unit Walls Subjected to Explosive Loads
Publisher: American Society of Civil Engineers
Abstract: This study discusses the development of a procedure that can be used to assess the reliability of concrete masonry unit infill walls subjected to personnel-delivered blast loads. Consideration is given to maintain reasonable ...
Load Truncation Approach for Development of Live-Load Factors for Bridge Rating
Publisher: ASCE
Abstract: Various local governments have developed state-specific vehicular live-load factors for bridge rating. However, a significant computational demand is often associated with such an effort. This is due to the large size of ...
Initial Assessment of Liquefied Scrap Tire Concrete
Publisher: ASCE
Abstract: A new approach to incorporate scrap tire material into concrete was investigated, in which two reclaimed waste tire components, carbon black and fuel oil, were used to replace a portion of water. The effect of liquid tire ...
Reliability of Steel-Fiber Reinforced Polymer Strengthened Reinforced Concrete Bridge Columns
Publisher: ASCE
Abstract: The reliability of reinforced concrete (RC) bridge columns strengthened with externally bonded, steel-fiber reinforced polymer (SFRP) fabric subjected to blast loads was investigated. Columns were modeled with a nonlinear ...
Modified Best-Selection Method for Bridge Live-Load Model Development
Publisher: ASCE
Abstract: Due to the expanding availability of high-fidelity weigh-in-motion (WIM) data in recent years, various local agencies have modified bridge design and rating procedures to best reflect state-specific traffic loads. However, ...
Observations of Structural Damage to Girder Bridges in Iraq Caused by Blast Threats
Publisher: American Society of Civil Engineers
Abstract: This paper summarizes the blast events and resulting damage found on more than 100 bridges in Iraq caused by terrorist attacks. Most structures were two to three lanes wide and composed of a superstructure with prestressed ...
Quantitative Resistance Assessment of Steel Girder Bridges Subjected to Blast Loads
Publisher: American Society of Civil Engineers
Abstract: The blast resistance of a typical two-lane steel girder highway bridge structural system was modeled using a nonlinear finite-element approach that considered material damage, fracture, and separation. Critical blast ...
Reliability of Steel Girder Bridges Subjected to Blast Loads
Publisher: American Society of Civil Engineers
Abstract: A reliability model was developed and used for the probabilistic assessment of typical steel girder bridge structural systems exposed to blast loads. Blast load scenarios and failure criteria were based on field observations ...
Quantitative Resistance Assessment of SFRP-Strengthened RC Bridge Columns Subjected to Blast Loads
Publisher: ASCE
Abstract: The blast resistance of a typical reinforced concrete bridge pier column design was modeled with a nonlinear finite element approach that considers material damage, fracture, and separation. While varying concrete strength, ...
Development of Traffic Live-Load Models for Bridge Superstructure Rating with RBDO and Best Selection Approach
Publisher: American Society of Civil Engineers
Abstract: Reliability-based design optimization (RBDO) is frequently used to determine optimal structural geometry and material characteristics that can best meet performance goals while considering uncertainties. In this study, the ...