Virginia Tech Structural Engineering and Materials Report Series
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Computational Study of Tension Field Action in Gable Frame Panel Zones
(2018-04-01)A computational study was conducted to evaluate the extent to which the column panel zone in a gable frame knee joint can develop tension field action when subjected to positive bending (top flange of the rafter is in ... -
Topology Optimization to Resist Buckling
(2019-07-15)A topology optimization algorithm to control out-of-plane buckling in shear-acting structural fuses is provided. The optimization procedure uses a genetic algorithm written in Matlab to find the distribution of material ... -
Mechanical Performance of Yellow-Poplar Cross Laminated Timber
(2015-12-03)Cross-laminated timber (CLT) is a structural wood composite material consisting of multi-layers of lumber orthogonal to each other creating massive wood panels. Development of CLT introduced a new concept of using wood in ... -
Rotational and Translational Stiffness Provided by Insulated Metal Panels to Girts and Purlins in Metal Building Wall and Roof Systems
(2016-02-06)The goal of this study is to quantify the restraint provided by insulated metal panels (IMPs) to girts and purlins in a metal building wall and roof system. These panels are fastened to their support members with screws ... -
3D + Time Reconstruction: Designing Optimal Camera Parameters
(2015-08-01)Three dimensional plus time reconstructions are an emerging concept in the civil engineering industry. The application possibilities are continuing to develop, resulting in an expansive range of projects. Proper image based ... -
Developing and Validating New Bolted End-Plate Moment Connection Configurations
(2015-07-01)End-plate moment connections are widely used, especially in metal buildings, between rafters (beams) and columns or at splice connections in rafters. References such as the AISC Design Guide 16 entitled “Flush and Extended ... -
Stiffness and Strength of Single Shear Cold-Formed Steel Screw-Fastened Connections
(2015)Results are presented from an experimental program on single shear cold-formed steel-to-steel through-fastened screw connections, including documentation of the complete load-deformation response and stiffness degradation. ... -
Spectral Matching Program using Broyden Updating
(2015-04-28)A matlab based program has been written for spectral matching ground motions to a target pseudo-acceleration spectrum using a Broyden algorithm for solving the set of nonlinear equations. This is a time-domain based ... -
The Effect of Powder Actuated Fasteners on the Seismic Performance of Protected Zones in Steel Moment Frames
(2014-10-08)Steel moment resisting frames rely on large inelastic strains in the beam plastic hinge region to dissipate seismic energy during an earthquake and protect the building against collapse. To limit the potential for premature ... -
Crack Detection and Measurement Utilizing Image-Based Reconstruction
(2014-06-17)Image-based reconstruction for automated crack detection has been on the rise for the past decade or so; this new technology can be applicable to many different areas such as laboratory testing, field inspections, construction ... -
Crack Detection and Measurement Utilizing Image-Based Reconstruction
(2014-06-16)Image-based reconstruction for automated crack detection has been on the rise for the past decade or so; this new technology can be applicable to many different areas such as laboratory testing, field inspections, construction ... -
Energy Dissipation for Cold Formed Steel Connections
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Elastic Buckling of Cold Formed Steel Beams with Unstiffened Holes
(2011-04-01)Critical elastic buckling analyses for cold-formed steel beams with unstiffened holes are performed in this assignment. The beam dimensions, boundary and loading conditions for the conducted simulations are based on ... -
Distortional Buckling Experiments on Cold-Formed Steel Joists with Unstiffened Holes
(2011-09-01)Experiments were conducted on cold-formed steel C-section joists with rectangular unstiffened web holes. The presence of holes decreased joist capacity and amplified distortional buckling deformation. Distortional buckling ... -
Experimental Investigation of the Multiple Row Extended 1/2 End-Plate Moment Connection
(2001-12-01)End-plate moment connections are widely used by the low-rise metal building industry to provide the rigid connections necessary in gable frames. There are numerous end-plate moment connection configurations. The multiple ... -
Energy Dissipation of Thin-Walled Cold-Formed Steel Members
(2013-10-02)Design of cold-formed steel (CFS) structures subjected to lateral seismic forces traditionally relies on the cyclic strength of subassemblages such as strapped/sheathed shear walls. Little regard is paid to the behavior ... -
Theory and Applications of the Lifting of Elastic, Doubly Symmetric, Horizontally Curved Beams
(2013-10-02)The lifting of horizontally curved beams (or almost-straight beams with an imperfection in shape) is considered, with application in the construction of bridges. A circularly curved beam that is suspended at two symmetric ... -
Out-of-Plane Web Deformation and Relative Arch Movement of Hybrid-Composite Beams Based on Photogrammetry
(2012-07-27)Recently invented by John R. Hillman, Hybrid-Composite Beams (HCBs) are a new approach to structural design that incorporate four materials in such a way as to maximize the efficiency of each material. A concrete arch ... -
Flexural Strength of Exterior Metal Building Wall Assemblies with Rigid Insulation
(Virginia Polytechnic Institute and State University, 2011-08-01)The goal of this research study is to observe and quantify the influence of rigid board insulation on through-fastened girt capacity. Rotational restraint tests are performed to study local rotational stiffness at the ... -
Vehicular Access Doors under Hurricane Force Wind Pressure: Experiments to Study Jamb Behavior
(Virginia Polytechnic Institute and State University, 2012-03-01)In August of 2009, two 10 ft by 10 ft DBCI 5000 vehicular access doors were tested with a simulated hurricane force wind pressure at the DBCI in Douglasville, GA (Gao and Moen 2009). After evaluating the results from this ...
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