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Filtering by: Creator Johnson, G. R. Remove constraint Creator: Johnson, G. R. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering Subject Earthquake resistant design Remove constraint Subject: Earthquake resistant design

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  • Response of equipment in resilient-friction base isolated structures subjected to ground motion

    Creator:
    Lei, Kai-ming
    Abstract:
    The response of lightweight equipment in structures supported on resilient-friction-base isolators (R-FBI) subjected to harmonic ground motion and various earthquake ground motions is examined. The equipment-structure base system is modeled as a three degree-of-freedom discrete system (SDOF subsystems). An efficient semi-analytical numerical solution procedure for the determination of equipment response...
    Resource Type:
    Dissertation
    Full Text:
    ] mi + ck + kx = -(§ + Rg)mr (1) 2 .§ + 4 to s. + co s + j.tg skncs) + Ea. R. = -Y( b b b i=1 " g (2

  • Dynamic response of flexible rotating machines subjected to ground motions

    Creator:
    Su, Wen-Chyi
    Abstract:
    Rotating machine play an important role in modern technology. Compressors in ventilating and cooling systems, pumps in power generation facilities, as well as high speed computer are all examples of flexible rotating machinery that must remain functional during and after a sever earthquake. Recent earthquakes have demonstrated that an aseismically...
    Resource Type:
    Masters Thesis
    Full Text:
    vectors in the relative frame become 1e =-ue =-221(-ule +e) s g ./e = -v e = -v (-u e r+es ) .1 .1 .1

  • Cross-laminated timber engineering : improvement and application

    Creator:
    Kramer, Anthonie
    Abstract:
    The development of cross-laminated timber (CLT) panel technology has opened up new opportunities for wood in tall buildings. Several characteristics including seismic performance and speed of construction have raised interest among designers. As CLT gains acceptance in the industry, alternative structural solutions need to be investigated to improve performance of...
    Resource Type:
    Masters Thesis
    Full Text:
    : Improvement and Application Abstract approved: Andre R. Barbosa Arijit Sinha

  • Numerical assessment of steel plate shear wall with coupling (SPSW-WC) system design procedure

    Creator:
    Li, Wennan
    Abstract:
    The Steel Plate Shear Wall (SPSW) system, is an innovative seismic lateral force resistant system, which has experienced increased use over the last three decades. The SPSW system is composed of boundary elements which anchor web plates that develop diagonal tension fields. A number of SPSW buildings have been built...
    Resource Type:
    Masters Thesis
    Full Text:
    . Andre R. Barbosa and Dr. Michael H. Scott. As the experts in civil engineering, their knowledge and

  • Seismic protection of flexible rotating machines using base isolators

    Creator:
    Su, Wen-Chyi
    Abstract:
    Base isolation is an alternative seismic design strategy in which the primary structures and their internal components are uncoupled from the potentially damaging horizontal components of an earthquake by base isolators which attenuate the transmission of horizontal acceleration into the system. Rotating machines are among the key internal components of...
    Resource Type:
    Dissertation
    Full Text:
    location point G with respect to the local frame. In the deformed shaft point G is located at r =(ux,u

  • Ground Improvement and Liquefaction Mitigation using Driven Timber Piles

    Creator:
    Gianella, Tygh N.
    Abstract:
    Seismically-induced liquefaction represents a major cause of damage to civil infrastructure and can result in significant damage following major earthquakes. Liquefaction can occur when earthquake ground motions raise pore-water pressures in loose, sandy soil, resulting in a substantial decrease of soil strength. Owing to the potential for instability following liquefaction,...
    Resource Type:
    Masters Thesis
    Full Text:
    Rayamajhi et al., 2014). .............. 46 Figure 2.24. Spatial distribution of Rrd and r with depth for

  • Performance-based seismic design of light-frame shearwalls

    Creator:
    Kim, Jun Hee
    Abstract:
    Performance-based design has gained interest in recent years among structural designers and researchers. Performance-based design includes selection of appropriate building sites, structural systems and configurations, as well as analytical procedures used in the design process, to confirm that the structure has adequate strength, stiffness and energy dissipation capacity to respond...
    Resource Type:
    Dissertation
    Full Text:
    ") ...................................................................... 256 G.1 Fragility curves considering R = 2.5 (10, 50/50 hazard level

  • Development of rapid visual screening tool for seismic evaluation of wood-frame dwellings

    Creator:
    Lucksiri, Kraisorn
    Abstract:
    During the past several decades, earthquakes have caused extensive damage to buildings, including wood-frame, single-family dwellings, in the United States. In order to mitigate future losses, existing buildings in earthquake prone areas should be evaluated for their seismic safety. This is also an important issue for buildings in Oregon due...
    Resource Type:
    Dissertation
    Full Text:
    3.3 Effect of base-rectangular area (1-story, R= 1.0

  • Slotted-bolted friction damper as a seismic energy dissipator in a braced timber frame

    Creator:
    Tjahyadi, Alfred
    Abstract:
    Friction dampers have been used successfully to dissipate seismic energy in steel and concrete structures. The application is new to timber structures. The objectives of this research were to design a slotted bolted connection (SBC) and evaluate its potential as a passive energy damper in timber brace. The research was...
    Resource Type:
    Masters Thesis

  • Steel confined yielding damper for earthquake resistant design

    Creator:
    Newell, James D.
    Abstract:
    An experimental study of a passive energy dissipation tension-compression yielding brace or buckling restrained brace has been conducted. The Confined Yielding Damper (CYD) consists of a steel yielding core confined within a tube filled with non-cohesive media. The external tube and confined non-cohesive media provide lateral stability to the core...
    Resource Type:
    Masters Thesis
    Full Text:
    number of braced frames in a given r--30 ft r 30 ft L ___ 124 ft 184 ft _Tm_I__ I I _______IIJIi