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RISModeling of Jointed Connections in Segmental Bridges
Publisher: American Society of Civil Engineers
Abstract: Precast segmental construction of bridges can accelerate construction and minimize the cost of medium span bridges in environmentally sensitive and difficult to access locations. Despite these benefits, the use of precast ...
Equivalent Unbonded Length for Modeling of Multistrand Tendons in Precast Segmental Construction
Publisher: American Society of Civil Engineers
Abstract: Recently issued seismic design guidelines for precast segment construction require nonlinear modeling of segment-to-segment joints of important bridges. The response of segment joints is highly dependent on the length of ...
Comparative Analysis of Infrastructure Assessment Methodologies at the Small Unit Level
Publisher: American Society of Civil Engineers
Abstract: This paper presents a comparative analysis of three different infrastructure assessment tools currently used by the U.S. Army’s combat engineer small units (squad, platoon, company). The infrastructure assessment tools ...
Interaction of Foundry Sands with Geosynthetics
Publisher: American Society of Civil Engineers
Abstract: Excess foundry sands from gray-iron casting are a mixture of sand, bentonite, and additives that can have properties desirable for structural fills and hydraulic barriers, depending on their bentonite content. To facilitate ...
Economics of Time Management: Case Study at NB Power
Publisher: American Society of Civil Engineers
Abstract: This paper describes a project undertaken at the New Brunswick Power Corporation (NB Power) the utility corporation of the Canadian province, in a cost-cutting effort through the use of improved time management. The focus ...
A Boundary Lubrication Friction Model Sensitive to Detailed Engine Oil Formulation in an Automotive Cam/Follower Interface
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Theoretical studies have shown that in severe operating conditions, valve train friction losses are significant and have an adverse effect on fuel efficiency. However, recent studies have shown ...
Structural Damage Detection Using Dynamic Properties Determined from Laboratory and Field Testing
Publisher: American Society of Civil Engineers
Abstract: Studies have shown that experimentally determined dynamic properties can be used to identify the characteristics of a structure. In this paper, a damage detection technique is developed and demonstrated using system ...
Analytic Form of the Six-Dimensional Singularity Locus of the General Gough-Stewart Platform
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The determination of the 6D singularity locus of the general Gough-Stewart platform is discussed in this article. The derivation of the velocity equation and the corresponding Jacobian matrices ...
Detection of Initial Yield and Onset of Failure in Bonded Posttensioned Concrete Beams
Publisher: American Society of Civil Engineers
Abstract: This paper discusses monitoring of bonded posttensioned (PT) concrete elements using the acoustic emission technique. In particular, a statistical pattern recognition technique based on a multivariate outlier analysis is ...