Strut-and-tie model design examples for bridge
dc.contributor.advisor | Bayrak, Oguzhan, 1969- | en |
dc.contributor.committeeMember | Ghannoum, Wassim M. | en |
dc.creator | Williams, Christopher Scott | en |
dc.date.accessioned | 2012-02-16T21:23:22Z | en |
dc.date.accessioned | 2017-05-11T22:24:27Z | |
dc.date.available | 2012-02-16T21:23:22Z | en |
dc.date.available | 2017-05-11T22:24:27Z | |
dc.date.issued | 2011-12 | en |
dc.date.submitted | December 2011 | en |
dc.date.updated | 2012-02-16T21:23:59Z | en |
dc.description | text | en |
dc.description.abstract | Strut-and-tie modeling (STM) is a versatile, lower-bound (i.e. conservative) design method for reinforced concrete structural components. Uncertainty expressed by engineers related to the implementation of existing STM code specifications as well as a growing inventory of distressed in-service bent caps exhibiting diagonal cracking was the impetus for the Texas Department of Transportation (TxDOT) to fund research project 0-5253, D-Region Strength and Serviceability Design, and the current implementation project (5-5253-01). As part of these projects, simple, accurate STM specifications were developed. This thesis acts as a guidebook for application of the proposed specifications and is intended to clarify any remaining uncertainties associated with strut-and-tie modeling. A series of five detailed design examples feature the application of the STM specifications. A brief overview of each design example is provided below. The examples are prefaced with a review of the theoretical background and fundamental design process of STM (Chapter 2). • Example 1: Five-Column Bent Cap of a Skewed Bridge - This design example serves as an introduction to the application of STM. Challenges are introduced by the bridge’s skew and complicated loading pattern. A clear procedure for defining relatively complex nodal geometries is presented. • Example 2: Cantilever Bent Cap - A strut-and-tie model is developed to represent the flow of forces around a frame corner subjected to closing loads. The design and detailing of a curved-bar node at the outside of the frame corner is described. • Example 3a: Inverted-T Straddle Bent Cap (Moment Frame) - An inverted-T straddle bent cap is modeled as a component within a moment frame. Bottom-chord (ledge) loading of the inverted-T necessitates the use of local STMs to model the flow of forces through the bent cap’s cross section. • Example 3b: Inverted-T Straddle Bent Cap (Simply Supported) - The inverted-T bent cap of Example 3a is designed as a member that is simply supported at the columns. • Example 4: Drilled-Shaft Footing - Three-dimensional STMs are developed to properly model the flow of forces through a deep drilled-shaft footing. Two unique load cases are considered to familiarize the designer with the development of such models. | en |
dc.description.department | Civil, Architectural, and Environmental Engineering | en |
dc.format.mimetype | application/pdf | en |
dc.identifier.slug | 2152/ETD-UT-2011-12-4661 | en |
dc.identifier.uri | http://hdl.handle.net/2152/ETD-UT-2011-12-4661 | en |
dc.language.iso | eng | en |
dc.subject | Strut-and-tie modeling | en |
dc.subject | Reinforced concrete | en |
dc.subject | Strength | en |
dc.subject | Serviceability | en |
dc.subject | Bent cap | en |
dc.subject | Cantilever | en |
dc.subject | Inverted-T | en |
dc.subject | Drilled-shaft footing | en |
dc.title | Strut-and-tie model design examples for bridge | en |
dc.type.genre | thesis | en |