Investigation of seismic soil-footing interaction by large-scale cyclic tests and analytical models
Faccioli E, Paolucci R, Vivero G.
Special presentation lecture SPL-05,
4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics,
San Diego, CA, 2001.
Using this link, it says download at the very bottom of the web page, but there is nothing to click on (at least nothing for me to click):
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No one can stop you to enter any site (maybe your leaders in some parts of our not always free world) and you can press Thanks when a stupid advertizer post in every section free for not activated users and advertize his site. Today was the third time and if someone from Sri Lanka think we cannot complain and report abuse he will find quickly his IP banned not only in our forum.
All the advertizers and all spammers are quickly banned in our forum and if our users post a new reply of "really nice website" as someone do today he will be warned without any connection with the advertizer's post because this is spam. No one asks aradadi his opinion about this site and posting opinions only is always warned (ardadi warned by me and banned by Admin).
The bellow text was composed by LiviuM and i hope will clarify our opinon about sites like this one. I know many engineering forums (some ot them good too), i prefere our organised and clean forum and i know we all use material from other forums but if someone steal from here at least to not advertize his forum based on our material.
If you'll visit ******* or other forums/website like it you'll find there material taken from CivilEA, badly organized and not maintained. And more important you'll find less and not updated material like software or books.
These bad clones of CivilEA exist only because of CivilEA.
The bad people who are creating these clone websites copy material from CivilEA for only one purpose, to make money by advertising.
Moreover by writing link to their website here they just prove how little value has their website compared to CivilEA.
Posted by: motamed - 12-04-2012, 11:08 AM - Forum: Archive
- No Replies
Does anybody have volume 3 of these series of technical books? Volume 3 consists of 2 separate books and concentrate on construction issues.
In the forum, exists the volume 2:
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IATA Airport Development Reference Manual - 8th Edition
Author: IATA - Intemational Air Transport Association | Size: 36.6 MB | Format:PDF | Quality:Scanner | Publisher: IATA - Intemational Air Transport Association | Year: April 1995 | pages: 307 | ISBN: 9290357290 - 9789290357292
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SEISMIC DEMANDS FOR PERFORMANCE EVALUATION OF STEEL MOMENT RESISTING FRAME STRUCTURES
Author: Akshay Gupta , Helmut Krawinkler | Size: 2.69 MB | Format:PDF | Quality:Original preprint | Publisher: Department of Civil and Environmental Engineering Stanford University | Year: 1999 | pages: 379 | ISBN: Report No. 132 , (SAC Task 5.4.3)
ABSTRACT
The objective of this work is to improve the knowledge base on the seismic behavior of typical steel moment resisting frame structures, considering regions of different seismicity and sets of ground motions of various intensities and frequency characteristics.
The emphasis is on behavior assessment and quantification of global and local force and deformation demands for different hazard levels. The research is intended to contribute to progress in the development of performance-based seismic design and evaluation of steel moment resisting frame structures. The behavior and response of different height structures in Los Angeles, Seattle, and Boston are studied. Analytical methods and models of various complexities are utilized and evaluated for their ability to predict global and local performance. A sensitivity study is performed on the effects of analysis assumptions on demand predictions. System level behavior characteristics and seismic demands are studied from the perspective of performance at different hazard levels. Local behavior characteristics and element deformation demands are evaluated for various designs, with consideration given to subjective design decisions, variations in material properties, and different types of beamto-column connections. A simplified procedure for estimation of global and local seismic demands is developed to facilitate decision making in the conceptual design process.
This work is concerned only with the behavior of “ductile” structures; fracturing of connections is not considered. The results from this study demonstrate that for ductile code conforming structures the global seismic demands, measured in terms of story drifts, are mostly within the range of acceptable performance at the various hazard levels – with one important exception. This exception occurs when severe ground motions drive a structure into the stability sensitive range, in which case P-delta effects constitute a potential collapse hazard. Local (element) seismic demands are found to be very sensitive to a multitude of factors, which may result in a concentration of plastic deformation demands in either the beams or the panel zones, or in sharing of demands between these two elements and possibly also the columns.
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Design of Earthquake Resistance Buildings Steel Building
Author: Dr. F. Nateghi | Size: 1.8 MB | Format:PDF | Quality:Original preprint | Publisher: Iran International Institute of Earthquake Engineering and Seismology | Year: 2003 | pages: 135 | ISBN: N/A
PART I Building Information
1. General Information 1
1.1. Architectural Information
1.2. General Structural Information
1.3. Soil Properties
1.4. Material Properties
1.5. Design and Analysis Criteria
2. General and Basic Loading Information 4
2.1. Dead Loads
2.2. Live Loads
2.3. Soil Pressure Loads
2.4. Wind Loads
2.5. Quake Loads
2.6. Loading Summary
3. Composite Beam Design 19
3.1. Composite beam type A
3.2. Composite beam type B
4. Diaphragm Control 33
5. Chiller Joints Design 35
6. Stair beams design 36
6.1. Beam design
6.2. Stair connection design
7. Loading combinations 38
8. Base plate design 39
8.1. Base plate 1 (450*450*25)
8.2. Base plate 2 (420*420*25)
8.3. Base plate 3 (400*400*25)
9. Section definition 45
9.1. Column sections
9.2. Beam sections
9.3. Bracing sections
PART II MRF SYSTEM DESIGN
1. Structural Bearing System 57
2. Computer modeling 57
3. Exact Loading Information 58
4. Analyzing Information 60
5. Analyzing output 61
6. Structural Design 61
7. Column Design 61
a. Column Section Design
b. Column Connectors
8. Beam Design 80
9. Rigid connection Design 83
10. Story Drift Control 88
11. P-Δ Effect 92
12. Service earthquake 92
13. Overturning control 93
14. Vertical Earthquake Control 94
15. Uplift Control 94
16. Foundation design 95
PART III BRACING in One Direction and Frame in another
1. Structural Bearing System 97
2. Braced Frame Locating 97
3. Exact Loading Information 97
4. Brace Design 100
5. Story Drift Control 106
6. P-Δ Effect 109
7. Foundation design 109
PART IV ECCENTRIC Bracing in both directions
1. Structural Bearing System 113
2. Braced Frame Locating 113
3. Exact Loading Information 113
4. EBF Design 115
5. Story Drift Control 120
Weight Comparing of structures 123
Appendix A: ETABS Input data 124
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Abstract
This dissertation reports a systematic study on analysis and identification of multiple parameter damped
mechanical systems. The attention is focused on viscously and non-viscously damped multiple degree-offreedom
linear vibrating systems. The non-viscous damping model is such that the damping forces depend
on the past history of motion via convolution integrals over some kernel functions. The familiar viscous
damping model is a special case of this general linear damping model when the kernel functions have no
memory.
The concept of proportional damping is critically examined and a generalized form of proportional
damping is proposed. It is shown that the proportional damping can exist even when the damping mechanism
is non-viscous.
Classical modal analysis is extended to deal with general non-viscously damped multiple degree-offreedom
linear dynamic systems. The new method is similar to the existing method with some modifications
due to non-viscous effect of the damping mechanism. The concept of (complex) elastic modes and nonviscous
modes have been introduced and numerical methods are suggested to obtain them. It is further
shown that the system response can be obtained exactly in terms of these modes. Mode orthogonality
relationships, known for undamped or viscously damped systems, have been generalized to non-viscously
damped systems. Several useful results which relate the modes with the system matrices are developed.
These theoretical developments on non-viscously damped systems, in line with classical modal analysis,
give impetus towards understanding damping mechanisms in general mechanical systems. Based on a
first-order perturbation method, an approach is suggested to the identify non-proportional viscous damping
matrix from the measured complex modes and frequencies. This approach is then further extended to identify
non-viscous damping models. Both the approaches are simple, direct, and can be used with incomplete
modal data.
It is observed that these methods yield non-physical results by breaking the symmetry of the fitted
damping matrix when the damping mechanism of the original system is significantly different from what is
fitted. To solve this problem, approaches are suggested to preserve the symmetry of the identified viscous
and non-viscous damping matrix.
The damping identification methods are applied experimentally to a beam in bending vibration with
localized constrained layer damping. Since the identification method requires complex modal data, a general
method for identification of complex modes and complex frequencies from a set of measured transfer
functions have been developed. It is shown that the proposed methods can give useful information about
the true damping mechanism of the beam considered for the experiment. Further, it is demonstrated that
the damping identification methods are likely to perform quite well even for the case when noisy data is
obtained.
The work conducted here clarifies some fundamental issues regarding damping in linear dynamic systems
and develops efficient methods for analysis and identification of generally damped linear systems.
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Keeping Schools Safe in Earthquakes , Proceedings of the ad hoc Experts’ Group Meeting on Earthquake Safety in Schools, Paris, 9 to 11 February 2004
Author: school safety and security | Size: 8.5 MB | Format:PDF | Quality:Original preprint | Publisher: school safety and security | Year: 2004 | pages: 122
TABLE OF CONTENTS
Preface ............................................................................................................................................ 6
Richard Yelland and Brian Tucker
Executive summary ....................................................................................................................... 8
Reader’s guide .............................................................................................................................15
Introduction: Acknowledging the importance of improving earthquake safety in schools ..19
Hannah von Ahlefeld
Part I. Recognising the obstacles to improving seismic safety of schools ................31
1. Earthquake vulnerability of school buildings in Algeria .............................................35
Fouad Bendimerad
2. Learning about seismic safety of schools from community experience in Berkeley, California 45
Arrietta Chakos
3. Seismic safety of schools in Italy ......................................................................................52
Mauro Dolce
4. Obstacles to improving seismic safety of school buildings in Turkey .....................64
Polat Gülkan
5. Seismic risk in schools: The Venezuelan project ...........................................................88
Oscar A. López, Julio J. Hernández, Gianina Del Re, José Puig and Magnolia Santamaría
6. Towards effective mitigation and emergency response in the Former Yugoslav
Republic of Macedonia ......................................................................................................101
Zoran Milutinovic and Jean-Pierre Massué
7. Making schools safer: The New Zealand experience
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