Author: Alfred Leick | Size: 3.4 MB | Format:PDF | Quality:Original preprint | Publisher: John Wiley & Sons | Year: 2004 | pages: 454 | ISBN: 9780471059301
The revised and updated authoritative volume on GPS use in surveying
Comprehensive and thorough in its coverage, GPS Satellite Surveying, Third Edition is the updated edition of Alfred Leick’s classic introduction to the field. Written to help specialists get the most out of GPS surveying techniques and the resulting measurements, this standard industry reference provides the latest fundamental and cutting-edge material for working with GPS today.
A unique volume in the field, this Third Edition offers an unrivaled presentation of procedures that apply to the Russian GLONASS, the forthcoming European GALILEO, and U.S. GPS satellite systems. New coverage addresses emerging precise-point positioning technology, as well as the most current information on:
Geodetic reference systems
GPS modernization
Least-squares adjustments
Pseudoranges and carrier phases
The troposphere and ionosphere
The LAMBDA technique
The ellipsoidal and conformal mapping models
GPS Satellite Surveying, Third Edition is a dependable, up-to-date reference for surveyors, civil engineers, transportation engineers, geologists, geographers, technicians, and students.
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Seismic behavior of box girder cable-stayed bridges considering large deformations
Author: Halabian, Amir M.; Keshtegar, Behrouz; Hashemolhosseini, S. Hamid | Size: 440 KB | Format:PDF | Quality:Unspecified | Publisher: NISEE e-Library | Year: 2007 | pages: 9
The main purpose of this study is to consider large deformations of the deck in response of long-span cable-stayed bridges during seismic excitations taking into account both kinds of geometric and material non-linearities. A 3D finite element model was developed. Large deformation beam elements with very low bending stiffness were used to model main supporting cables. The orthotropic deck was represented in the model with large deformation shell elements. Non-linear time history analyses using explicit approach were performed for a practical cable-stayed bridge subjected to different ground excitations considering ground motion spatial variation. In a parametric study the effects of the spatial variation in ground motions and cables’ post-tensioned forces on seismic response of the structure were examined. Results of time history analyses indicated that neglecting large deformations could lead one to overestimate the stiffness of the deck in some areas.
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Vulnerability, Uncertainty, and Risk: Analysis, Modeling, and Management
Author: Bilal M. Ayyub | Size: 40.1 MB | Format:PDF | Quality:Unspecified | Publisher: American Society of Civil Engineers | Year: 2011 | pages: 1004 | ISBN: 9780784411704
Proceedings of the International Conference on Vulnerability and Risk Analysis and Management (ICVRAM 2011) and the International Symposium on Uncertainty Modeling and Analysis (ISUMA 2011), held in Hyattsville, Maryland, April 11-13, 2011. Sponsored by the Council on Disaster Risk Management of ASCE. This collection contains 120 peer-reviewed papers that build upon recent significant advances in the modeling, analysis, and management of risk, vulnerability, and uncertainty. Yet, even as advancements are made in technology, new hazards appear. These papers demonstrate the transformation of intellectual discussions into robust frameworks for handling emerging vulnerabilities and risks and providing analytical bases to prepare for national and international disasters
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In this revised second edition, Elements of Plasticity continues to bridge the gap between classical theory and modern computational techniques and does so by focusing on the most important elements of theory and computation using matrix notation. Some complementary aspects of creep and viscoplasticity are considered and a number of applications from engineering practice are used to demonstrate the use of computational techniques. Practicing engineers, consultants and graduate students from civil, mechanical, automotive and aerospace engineering will find this revised edition indispensable.
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Article/eBook Full Name: Be a Demolition Engineer (Scienceworks!)
Author(s): David Dreier
Publish Date: 2008
ISBN: 083688941X
Published By: Gareth Stevens Publishing
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Article/eBook Full Name: Going Going Gone: Images of the Demolition of Yankee Stadium
Author(s): Steve Spak
Publish Date: 2010
ISBN: 1452889708
Published By: CreateSpace Independent Publishing Platform
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The most common terminals for tankers are sea islands and piers; however, many other shipboard operations such as mooring at Single Point Moorings (SPM's), Multi-Buoy Moorings (MBM's), emergency towing, barge mooring, tug handling, anchoring, canal transit may fall into the category of mooring and thus require specialized equipment or fittings.
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Intelligent Selection of Demolition Techniques: A Case Study on United Kingdom Demolition Industry
Author(s):
Arham Abdullah , Chimay J. Anumba , Mohammad Ali Kazerooni Sadi
Publish Date:
2012
ISBN:
3846580082
Published By:
LAP LAMBERT Academic Publishing
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Abstract
Bridge girders exposed to aggressive environmental conditions are subject to time-variant changes in resistance. There is therefore a need for evaluation procedures that produce accurate predictions of the load-carrying capacity and reliability of bridge structures to allow rational decisions to be made about repair, rehabilitation and expected life-cycle costs. This study deals with the stability of damaged steel I-beams with web opening subjected to bending loads. A three-dimensional (3D) finite element (FE) model using ABAQUS for the elastic flexural torsional analysis of I-beams has been used to assess the effect of web opening on the lateral buckling moment capacity. Artificial neural network (ANN) approach has been also employed to derive empirical formulae for predicting the lateral-torsional buckling moment capacity of deteriorated steel I-beams with different sizes of rectangular web opening using obtained FE results. It is found out that the proposed formulae can accurately predict residual lateral buckling capacities of doubly-symmetric steel I-beams with rectangular web opening. Hence, the results of this study can be used for better prediction of buckling life of web opening of steel beams by practice engineers.
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