Theses and Dissertations from UMD

Permanent URI for this communityhttp://hdl.handle.net/1903/2

New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a give thesis/dissertation in DRUM

More information is available at Theses and Dissertations at University of Maryland Libraries.

Browse

Filters

2015 - 20202

Settings

Subject: search.filters.subject.low rise building

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    PREDICTING WIND PRESSURE ON LOWRISE BUILDINGS WITH PROTECTIVE PARAPETS USING ARTIFICIAL NEURAL NETWORKS
    (2020) Wang, Yanan; Phillips, Brian M; Civil Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Wind hazards cause tremendous destruction and threaten people’s safety and economical losses. To improve current provision toward wind load and strengthen buildings against wind forces, it’s vital to properly characterize wind loading on buildings in wind hazard. The turbulence created by the bluff body makes analytical modeling difficult. Therefore, engineers typically turn to wind tunnel tests. This thesis investigates the application of Artificial Neural Networks (ANN) to predict the wind pressure on low-rise buildings with protective parapets. With existing experimental datasets conducted in BLWT, ANN models were trained to model non-linear relationship between inputs, such as tap coordinates and parapet height, and outputs, such as pressure coefficients. The developed model was used to predict pressure coefficients with unseen parapet height to cut down experimental cost.
  • Thumbnail Image
    Item
    REEVALUATION OF ASCE 7-10 EXTERNAL PRESSURE COEFFICIENTS ON THE COMPONENTS AND CLADDING OF LOW-RISE BUILDINGS USING MODERN WIND TUNNEL TESTING DATA
    (2015) Gierson, Matthew Lloyd; Phillips, Brian M; Ayyub, Bilal M; Civil Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Wind loads for U.S. building designs are specified in a publication of the American Society of Civil Engineers (ASCE 7). Portions of the current version, ASCE 7-10, rely on wind tunnel tests that date back 30-50 years. In recent decades, advances in computer technology have allowed the simultaneous recording of many more pressure taps than was possible before. This research proposes a step-by-step methodology which determines the external pressure coefficients (GCp) on the components and cladding of low-rise buildings using modern aerodynamic wind tunnel databases. Pressure tap time history data is used to calculate the peak pressure coefficients for a comprehensive sweep of arbitrarily selected grid areas, over all available tested wind directions. By incrementing grid area combinations with their contributing taps, GCp can be plotted versus effective area. External pressure coefficients for the analysis of cladding and components are under predicted by the current ASCE 7-10 specifications.