Download or read book Static and Dynamic Behavior of Pinned base Portal Frames written by Stanley K. Takahashi and published by . This book was released on 1965 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tests were performed on four steel portal frames, 8 feet high and 12 feet long, fabricated from 12WF27 rolled sections. The frames were constant in cross section and hinged at their bases. Maximum static and dynamic loads of 75,000 and 80,000 pounds, respectively, were applied over one column of each frame to simulate a horizontal, travelling, blast wave. The rise times of the dynamic loads were approximately 2 to 3 milliseconds. The loads then decayed exponentially to zero in about 1 second. An equivalent triangular load-time function was used for analysis. After several dynamic loads were placed on one column of one frame, the opposite column was loaded to determine the effect of repeated and reversed loading. The applied loads and the resulting deflections, strains, and accelerations were measured. The reduced data are presented in graphical and tabular forms. The multiplemode, the simplified, and the response-chart methods of dynamic analysis were performed, and the results were compared with the experimental values. The multiple-mode analysis proved to be the only method that can be used to predetermine the locations of plastic hinges, however, the single-degree of-freedom system adequately described the maximum displacement of the frame in both the elastic and inelastic ranges. Good correlation was obtained between theoretical and experimental values for both the static and dynamic tests. The dynamic response factor and the dynamic shear factors were 1.9 and 1.4 respectively. (Author).

Download or read book Static and Dynamic Behavior of Fixed base Portal Frames written by Richard H. Chiu and published by . This book was released on 1965 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dynamic response factor was approximately 2.13 which was slightly larger than the theoretical value of 2.00.

Download or read book Guide to Technical Documents written by Naval Civil Engineering Laboratory (Port Hueneme, Calif.) and published by . This book was released on 1974 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Static and Dynamic Behavior of Antisymmetrically Loaded Arches written by R. H. Chiu and published by . This book was released on 1966 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four pinned-base steel arches with a 96-inch radius, 143.8-inch span, and uniform cross section were cold-rolled from 4M13 sections and tested under various static and dynamic loads uniformly distributed over one-half the arc length. A maximum static load of 72,000 pounds was applied by the NCEL blast simulator using compressed air. A dynamic peak load of 64,000 pounds was attained by detonating Primacord in the blast simulator. The blast loading had a rise time of about 3 milliseconds and a decay time of about 1.6 seconds. An equivalent triangular load-time function was used for the dynamic analysis. The applied loads and the resulting deflections, strains, and reactions were measured. The reduced data are presented in graphical and tabular form. The theoretical analyses for statically and dynamically loaded arches were based on the discrete framework which represented the continuous arches tested. A 16-bar system was used for both static and dynamic response calculations, and a 40-bar system was used for natural mode and frequency calculations. In the static analysis, the effects of stress amplification, misalignment, and elastic supports on the response of the arch were considered. Due to the strain- hardening characteristics of the arch material, the idealized stress-strain curve was represented by a trilinear curve rather than by the usual bilinear stress-strain curve. A simplified dynamic analysis gave results reasonably close to those from more rigorous methods; the values were on the conservative side. Nearly complete correlation between the theoretical and experimental results was obtained.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1966 with total page 1182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of the Engineering Mechanics Division written by American Society of Civil Engineers. Engineering Mechanics Division and published by . This book was released on 1971 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1965 with total page 1654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alternatives in Energy Conservation written by and published by . This book was released on 1976 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Navy Civil Engineer written by and published by . This book was released on 1965 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1965-07 with total page 1698 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research and Development Reports written by and published by . This book was released on 1965 with total page 1776 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structural Analysis and Design of Tall Buildings written by Bungale S. Taranath and published by CRC Press. This book was released on 2016-04-19 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: As software skills rise to the forefront of design concerns, the art of structural conceptualization is often minimized. Structural engineering, however, requires the marriage of artistic and intuitive designs with mathematical accuracy and detail. Computer analysis works to solidify and extend the creative idea or concept that might have started o

Download or read book Tall Building Design written by Bungale S. Taranath and published by CRC Press. This book was released on 2016-10-04 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addresses the Question Frequently Proposed to the Designer by Architects: "Can We Do This? Offering guidance on how to use code-based procedures while at the same time providing an understanding of why provisions are necessary, Tall Building Design: Steel, Concrete, and Composite Systems methodically explores the structural behavior of steel, concrete, and composite members and systems. This text establishes the notion that design is a creative process, and not just an execution of framing proposals. It cultivates imaginative approaches by presenting examples specifically related to essential building codes and standards. Tying together precision and accuracy—it also bridges the gap between two design approaches—one based on initiative skill and the other based on computer skill. The book explains loads and load combinations typically used in building design, explores methods for determining design wind loads using the provisions of ASCE 7-10, and examines wind tunnel procedures. It defines conceptual seismic design, as the avoidance or minimization of problems created by the effects of seismic excitation. It introduces the concept of performance-based design (PBD). It also addresses serviceability considerations, prediction of tall building motions, damping devices, seismic isolation, blast-resistant design, and progressive collapse. The final chapters explain gravity and lateral systems for steel, concrete, and composite buildings. The Book Also Considers: Preliminary analysis and design techniques The structural rehabilitation of seismically vulnerable steel and concrete buildings Design differences between code-sponsored approaches The concept of ductility trade-off for strength Tall Building Design: Steel, Concrete, and Composite Systems is a structural design guide and reference for practicing engineers and educators, as well as recent graduates entering the structural engineering profession. This text examines all major concrete, steel, and composite building systems, and uses the most up-to-date building codes.

Download or read book Technical Publications Announcements with Indexes written by United States. National Aeronautics and Space Administration and published by . This book was released on 1962 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structural Design of Polymer Composites written by J.L. Clarke and published by CRC Press. This book was released on 2003-09-02 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Independent, practical guidance on the structural design of polymer composites is provided for the first time in this book. Structural designers familiar with design of conventional structural materials such as steel and concrete will be able to use it to design a broad range of polymeric composites for structural applications, using glass fibre reinforced plastic materials, components, connections and assemblies.

Download or read book Government Reports Announcements written by and published by . This book was released on 1965 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt: