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Filtering by: Creator Rosell, C. H. Remove constraint Creator: Rosell, C. H. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Image rectification tool for evaluation of gusset plate connections in steel truss bridges

    Creator:
    Nguyen, Quang D.
    Abstract:
    A methodology was developed to permit rectification and metrification of digital images of steel truss gusset plate connections. The approach will enable rapid and accurate collection of field measurements as compared to traditional methods to enable structural evaluation of gusset plate connections. The program enables the operator to quickly create...
    Resource Type:
    Masters Thesis
    Full Text:
    . Page 43 8 References Arias, P.; Ordóñez, C.; Lorenzo, H.; Herraez, J.; Armesto J.; “Low

  • Freeze-thaw durability of reinforced concrete deck girders strengthened for shear with surface-bonded carbon fiber-reinforced polymer

    Creator:
    Mitchell, Mikal Maxwell
    Abstract:
    Long-term durability of surface-bonded carbon fiber-reinforced polymer (CFRP) U-wraps for shear strengthening of reinforced concrete (RC) bridge members remains uncertain due to the limited field experience with these materials. This paper provides experimental results from the testing of full-scale RC bridge girder specimens after exposure to prolonged freeze-thaw cycling. CFRP...
    Resource Type:
    Masters Thesis
    Full Text:
    temperature data. The convection coefficients, h (W/m2·°C) [Btu/hr·ft2·°F], were computed as [Schlangen

  • Experimental and analytical investigation of ponding load effects on a steel joist roof system

    Creator:
    Stark, Duncan
    Abstract:
    Ponding of water on roof systems leading to collapse causes expensive damage and jeopardizes the life safety of building occupants. Current building codes and design specifications for flat roof systems offer minimal guidance in designing for ponding loads. The present research investigated ponding load effects on a long span, lightweight...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________________________ Christopher C. Higgins Ponding of water on roof systems leading to collapse causes

  • Investigation of the behavior of diagonally cracked full-scale CRC deck-girders injected with epoxy resin and subjected to axial tension

    Creator:
    Smith, Matthew T. (Matthew Todd)
    Abstract:
    Article 1: Behavior of Epoxy Injected Diagonally Cracked Full-Scale CRC Deck-Girders. Many cast-in place reinforced concrete deck-girder bridges (RCDG) remain in the national inventory and exhibit diagonal cracking. Epoxy injection has been in use for several decades as a method for sealing diagonal cracks, but the effects on girder behavior...
    Resource Type:
    Masters Thesis
    Full Text:
    . 1981, pp. 79-82 Higgins, C., Miller, T. H., Rosowsky, D. V., Yim, S. C., Potisuk, T., Daniels, T

  • Wind induced torsional fatigue behavior of truss bridge verticals

    Creator:
    Keller, Philipp
    Abstract:
    The Astoria-Megler Bridge is a 6.6 kilometer (4.1 mile) long bridge, connecting Oregon and Washington on US 101, with a continuous steel truss main span of 376 m (1232 ft). It is the second longest main span bridge of this type in the world. Due to vortex shedding, some of...
    Resource Type:
    Masters Thesis
    Full Text:
    of an I-section is given as: 2 4 y w I h C  [2.10] The torsional constant (J), for an I

  • Scale effects on reinforced concrete beams strengthened for shear with discrete externally bonded carbon fiber-reinforced polymer U-wraps

    Creator:
    Dawson, Matthew Ryan
    Abstract:
    Current ACI design provisions for shear in reinforced concrete (RC) beams strengthened with externally bonded carbon fiber-reinforced polymer (CFRP) U-wraps may not adequately account for the effect of scale. This paper describes tests of 6 geometrically scaled beams to identify possible scale effects of such beams. Results indicated that effective...
    Resource Type:
    Masters Thesis
    Full Text:
    : Christopher C. Higgins Current ACI design provisions for shear in reinforced concrete (RC) beams

  • Breaking Waves Offshore: Measurements and Modeling of Energy Dissipation

    Creator:
    Ticona Rollano, Fadia M.
    Abstract:
    In the presence of strong winds, ocean surface waves dissipate significant amounts of energy by breaking. Here, breaking rates and wave-following turbulent dissipation rate measurements are compared with numerical WAVEWATCH III estimates of bulk energy dissipation. At high winds, the measurements suggest that turbulent dissipation becomes saturated, however the modeled...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ H. Tuba Özkan‒Haller In the presence of strong winds, ocean surface waves dissipate

  • Aseismic performance of a cable-stayed structure with decentralized H[infinity] control

    Creator:
    Chńg, Guan B.
    Abstract:
    The dissertation uses state-of-the-art structural engineering theories, in parallel with the modern and still-developing control theory of electrical engineering to mitigate the vibratory responses of a double-stayed bridge subjected to strong earthquake ground motions. First, a nonlinear finite element model of the double-stayed bridge subjected to non-uniform (multi-support) earthquake excitations...
    Resource Type:
    Dissertation
    Full Text:
    . Miller, Dr. Solomon C. S. Yim, Dr. Molly H. Shor, and Dr. Donald C. Solmon, for their interest and

  • Location of the neutral axis in wood beams

    Creator:
    Holm, Sarah C.
    Abstract:
    It is commonly accepted that for the analysis of wood beams, the neutral axis coincides with the centroid of the beam. Although this assumption is used in analysis, wood is not an isotropic material, as it has different elastic properties in the tangential, radial and longitudinal directions, nor is it...
    Resource Type:
    Honors College Thesis
    Full Text:
    in Civil Engineering project of Sarah C. Holm presented on June 1, 2007. APPROVED: Thomas H. Miller

  • Testing and evaluation of flexural reinforcing bars terminating in columns

    Creator:
    Koester, Carl C.
    Abstract:
    Capacity of transverse 1950's vintage reinforced concrete deck girder bridge bent caps with large straight bar anchorages were investigated and evaluated. Eleven subassemblage column specimens were examined with different anchorage lengths, bar groupings, amount of transverse steel, and externally applied axial force. Test results showed an increase in anchorage capacity...
    Resource Type:
    Masters Thesis
    Full Text:
    � f' - c �6 f' s y c 0.04A f f' (in) h cf =k* f' s h c 0.04A f f' (in) ACI 1941