Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"T-Beam"”.
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Object oriented programming for reinforced concrete T-beam bridge design
… program for the design of reinforced concrete T -beam bridges in accordance with the newly adopted AASHTO LRFD Bridge Specification. The program can perform both the analysis and design of the deck and beam. The program is interactive in nature and it is possible to change all input data and …
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Refinement of the Inverted T-Beam Bridge System for Virginia
The inverted T-beam bridge system is a bridge construction technique that follows accelerated bridge construction processes. The system was discovered in France and first adopted in the U.S. by the Minnesota Department of Transportation. In 2012 the system was modified and adopted by Virginia, with …
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Recommendations for Surface Treatment for Virginia Inverted T-Beam Bridge System
… methods for use in the Virginia Inverted T-Beam bridge system. The specific system consists of precast beams with thin bottom flanges placed next to one another, with a cast-in-place slab on top. Previous research has shown that the strength of this system after cyclic loading is highly …
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Investigation of Concrete Mixtures to Reduce Differential Shrinkage Cracking in Inverted T Beam System
The inverted T-beam system provides an accelerated bridge construction alternative. The system consists of adjacent precast inverted T-beams finished with a cast-in-place concrete topping. The system offers enhanced performance against reflective cracking and reduces the likelihood of cracking due …
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A Study Of Effective Moment of Inertia Models for Full-Scale Reinforced Concrete T-Beams Subjected to a Tandem-Axle Load Configuration
… estimating the load capacity of an in-service T-beam bridge. A bridge type that is a stumbling block for U.S. Army field engineers due to the unknown amount and placement of the flexural reinforcement in the T-beam girder cross-sections. Personnel from the U.S. Army Corp of Engineer's Waterways …
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Reconsidering Composite Action on Strength of Wood Roof Systems
… can be quantified by considering a composite T-beam, with the wood joist being the web and the structural sheathing being the flange. Although this effect has already been considered in the past (under different assumptions and different models), it is hypothesized that an increase in strength …
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Feasibility of fiber reinforced composite materials used in highway bridge superstructures
… box girder is used, for reinforced concrete, T-beam is selected; in addition, steel concrete composite section is another case. Design methods are different from material to material. Reinforced concrete T-beam design is based on the 'Ultimate Strength Design' method. Steel concrete composite …
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Non-Contact Lap Splices in Dissimilar Concretes
… situation is found in the repair of adjacent box beam bridges and in the construction of inverted T-beam systems, among others. It is vital to understand whether the same mechanisms are present across a cold joint with two different types of concrete as are present in traditional non-contact lap …
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A new ultimate limit state approach to the design of prestressed concrete beams
The present approach to the design of prestressed beams is antiquated and time consuming. Neither SLS or ULS requirements are satisfied directly. There is a need for a new approach using plastic principles to design the prestressing requirements at ULS considering a whole span at a time, with …
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The performance assessment of patch repaired and CFRP strengthened RC T-beams under transverse impact loading
… of abnormally loaded vehicles into bridge beams is a frequent occurrence on many highways in South Africa. Structural damage due to such loading conditions requires repair and strengthening procedures that can return the structure to its original load bearing capacity. The use of patch …
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Development of a Composite Concrete Bridge System for Short-to-Medium-Span Bridges
The inverted T-beam bridge system provides an accelerated bridge construction alternative for short-to-medium-span bridges. The system consists of adjacent precast inverted T-beams finished with a cast-in-place concrete topping. The system offers enhanced performance against reflective cracking, …
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Retrofitting of reinforced concrete beams with CFRP straps to enhance shear capacity
… for shear enhancement of reinforced concrete beams. Previous studies using these straps have employed steel pads on top of the beam to support the strap but this is problematic from a practical point of view. The initial goal of this research was to develop a method of installing the straps …
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Retrofitting of reinforced concrete beams with CFRP straps to enhance shear capacity
… for shear enhancement ofreinforced concrete beams. Previous studies using these straps have employed steel pads on top of the beam to support the strap but this is problematic from a practical point of view. The initial goal of this research was to develop a method of installing the straps …
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Bending behavior of concrete T-beams reinforced with glass fiber-reinforced polymer (GFRP) bars
… with the stiffening system, i.e., classic T-beam action. The emphasis of this study is to determine the effective flange width, failure modes, deformability factors, pre- and post-cracking deflections and crack widths at first crack and at ultimate failure of T-beams.;Eight concrete T-beams …
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Numerical study of improved methods of in-field capacity assessment of reinforced concrete bridges
… of simply supported reinforced concrete T-beam girders with varying levels of longitudinal and shear reinforcement.
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The upturned concrete beam system : an investigation of structural, environmental, and constructability performance
… system. Through the use of upturned concrete T-beams, designers created a naturally ventilated workspace that employs the thermal mass of an exposed concrete ceiling. This concrete absorbs heat during the day and is purged at night by cool breezes. This study investigates the inherent structural …
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Analysis and computer program for non-prismatic continuous beam and floor section
… analyzing continuous non-prismatic T-beams. Residential floor systems were treated as a series of three-span continuous T-beams. Cross-sectional area of the stem of the T-beam was doubled over interior supports and for 3 ft. on either side. Computer programs were used for calculating …
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A New CFRP-UHPC System for Strengthening Reinforced Concrete T-Beams
… field, strengthening of reinforced concrete beams using FRP laminates became a common repair and retrofit technique. Traditionally, Reinforced Concrete (RC) beams are strengthened by adhering FRP laminates to the tension side of the beam to work as an additional tensile reinforcement. …
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The structural exploitation of fibrous-cement composites in reinforced concrete T-beams
… in the tensile zone of reinforced concrete T-beams. The fibre reinforced cement composites, which act as 'surface reinforcement', incorporate high modulus, asbestos fibres in a predominantly two-dimensional random distribution in a cement matrix. Compared with concrete, these units have a high …
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Shear Reliability Analysis of Reinforced Concrete Bridges Designed to TMH7
… case study considered a detailed 10m and 20m T-beam bridges designed to TMH7and performed the shear reliability on the heavily loaded beam. Secondly, a generic study considering practical load ratios. For both case studies, the assessment of the WIM data defined the probabilistic characteristics …
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