Dear all, i appreciate if anyone could upload the following paper:
STUDY OF TRANSMISSION TOWER MODELING IN ANSYS AND DYNAMIC CHARACTERISTICS
Author:
Feng Yunwei
Abstract
The natural vibration periods of transmission tower structure are obtained using FEM and the wind pressure regulation factor can be determined by programming interface program which can transform the data of full stress to ANSYS and process the mode analysis.The spatial frame model and mix-element model are established in the example,and the mode analysis results are compared with the results by experience formula.It indicates that the mode analysis results in accord with criterion values better,and the experience formula results are smaller than them.
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Dear all, i appreciate if anyone could upload the following paper:
Influence of Bolted-Joint Slippage on the Response of Transmission Towers Subjected to Frost-Heave
Authors
K.I.E. Ahmed, R.K.N.D. Rajapakse, M.S. Gadala
Abstract
Slippage of bolted joints is an important factor in the behavior of transmission towers. Field inspections of towers located in the northern regions of Canada show substantial frost-heave induced displacements. The conventional structural analysis software solutions for tower leg axial forces, based on idealized joint behavior under field-observed frost-heave induced displacements, are excessively large, implying tower failure in some cases. However, field inspections show structurally stable towers, and design engineers often consider joint slippage as the main reason for this discrepancy. In this paper, the experimental slippage behavior of transmission-tower bolted joints investigated by Ungkurupanian (2000) is incorporated into a non-linear joint finite element and applied to study the behavior of transmission towers under working loads by using the finite element method. The analysis shows that tower-leg joint slippage has a significant influence on tower behavior by either reducing the load carrying capacity or significantly increasing the deflections under working loads. On the other hand, joint slippage has a positive effect on towers subjected to frost-heave induced displacements, as the resulting member axial forces are much lower than those corresponding to rigid joints.
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Landscaping: Principles & Practices, 7th Edition, provides students and practitioners with the information needed to be successful in the classroom and the workplace. Focusing on three areas of professional practice; design, contracting, and management, the reader is provided the basic knowledge integral to the industry in straightforward, easy-to-read chapters. It also addresses traditional topics such as design, plant installation, and pricing, as well as topics not found in most other texts, such as interior landscaping, xeriscaping, water gardens, and safety. Extensive color illustrations and photos aid in visually understanding the concepts and industry specific insight allows the reader to tune into topics traditionally overlooked in other texts.
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SketchUp is the tool of choice for architects, interior designers, and construction professionals. Though the basics are simple to understand, getting the most out of it requires deeper instruction and guidance. Architectural Design with Google SketchUp uses easy-to-understand tutorials to describe both common and advanced process, illustrated throughout with full-color renderings.
Handy sidebars throughout the book cover fundamentals and background information
End-of-chapter exercises help readers master new skills and techniques
A robust companion website includes helpful videos, sample files, and plug-ins
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"Building with Steel is a practical guide to structural steelwork. Using case studies, customary typical details are illustrated and analysed by way of large-scale drawings. The principles behind the design of load-bearing structures show which types of structure are advisable in which situations and constitute a useful aid for design and planning work. To complement this, the book includes an overview of steelwork connections plus suitable means of connection illustrated by way of typical, modern forms of construction." "Everyday loadbearing structures are explained by examples of residential and office buildings as well as single-storey sheds. Questions regarding fire protection and building performance, especially relevant for structural steelwork, are investigated, and steel as a facade cladding material is another theme addressed in detail." --Book Jacket.
I was able to find only pag30-63 posted here
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This hands-on guide shows how to improve foundation conditions using preloading, an effective and economical method for strengthening subsurface soils. Explains all aspects of planning, implementing, monitoring and assessing the results of preloading, illustrating each phase with case studies. Treats soil mechanics, reviewing the mechanical properties, stability, compression, consolidation, and improvement possibilities of soft soils.
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Precast Prestressed Concrete Bridge Design Manual Third Edition
Author: The PCI Bridge Design Manual Steering Committee, part of the Transportation Activities Council | Format:PDF | Quality:Unspecified | Publisher: Precast/Prestressed Concrete Institute | Year: 2011 | ISBN: 978-0-9846705-4-3
The First Release of chapters for the 3rd Edition of the PCI Bridge Design Manual (BDM), single user digital publication. This publication describes the effective use of precast and precast, prestressed concrete components. The application of the AASHTO LRFD Bridge Design Specifications (Fifth Edition with 2011 Interims) of these transportation components is described in detail.
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Can anybody post any guide line or any theory or post for providing expansion joints in a factory shed having conc. or steel columns and triangular truss roof ? (expansion joint will be parallel to roof truss)
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