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  Experimental Verification of Viscous Damping Modeling for ITHA
Posted by: Grunf - 06-22-2012, 08:04 PM - Forum: Archive - Replies (2)

Dear members,

can someone share this article:

Experimental Verification of Viscous Damping Modeling for Inelastic Time History Analyzes


by: Lorenza Petrinia*, Claudio Maggib, M. J. Nigel Priestleyc & G. Michele Calvibc
pages 125-145

Keywords: Viscous Damping Modeling, Shake Table Tests, Theory/Experiment Comparison, Time History Analysis


Abstract:
Inelastic time history analyzes (ITHA) are recognized as the most suitable tool for describing the behavior of structures under seismic actions. It is clear that the reliability of ITHA results is strongly dependent on the modeling choices. One of the aspects still debated, in spite of a large amount of research, is the modeling of viscous damping forces. In the case of a single degree of freedom (SDOF) structure, the damping not represented by hysteretic response is commonly assumed proportional to the square root of the system stiffness: typically in the research papers it is not declared whether the initial or tangent-stiffness is considered. Recent research has shown that initial or tangent-stiffness proportional damping can give very different results in terms of energy dissipation, and peak response displacement. In this work, experimental and numerical tests performed to detect the most appropriate model are described and discussed.

Available at:
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Many thanks in advance.


Kind regards,
Grunf

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  AISC Engineering Journal, 3rd Q 2012, V49, #3
Posted by: Diquan - 06-22-2012, 05:14 PM - Forum: Journals, Papers and Presentations - No Replies

AISC Engineering Journal, 3rd Q 2012, V49, #3

Size: 7.2 MB | Format: PDF | Quality: Unspecified | Publisher: AISC | Year: June 2012 | pages: 38

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1.Prying Action for Slip-Critical Connections with Bolt Tension and Shear Interaction

2.Satisfying Inelastic Rotation Requirements for In-Plane Critical Axis Brace Buckling for High Seismic Design

3.AASHTO LRFD Provisions for the Seismic Design of Steel Plate Girder Bridges

4.Technical Note: Effective Length Factors for Gusset Plates in Chevron Braced Frames

5.Current Steel Structures research no 31

6.Errata



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  SGCC2011 International Symposium on Sustainable Geosynthetics and Green Technology f
Posted by: utan - 06-22-2012, 06:45 AM - Forum: Geotechnical Engineering - No Replies

[Image: 28047212031230152050.jpg]

SGCC2011 International Symposium on Sustainable Geosynthetics and Green Technology for Climate Change

Size: 49.1 MB | Format: PDF | Quality: Unspecified | Publisher: Asian Institute of Technology | Year: 2011 | pages: 597


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TABLE OF CONTENTS
Keynote Speakers
Asphalt Pavement Using Confined-Reinforced Earth 1
by H. Ohta, T. Ishigaki and N. Tatta

Historical Advancement of Geotechnical Engineering and their Application in Construction Industry and Beyond 9
by M. W. Bo

Stabilising Railway Embankments with Geosynthetic Grids and Drains and a Class A Prediction of Track 21
Behaviour
by B. Indraratna, S. Nimbalkar and C. Rujikiatkamjorn

Recent Applications of GRS Technology to Mitigate Natural Disasters in Japan 41
by F. Tatsuoka, M. Tateyama and J. Koseki

Tensile Properties of HDPE Geomembranes with Chemical Solutions Under Exposure to Elevated Temperature 61
by B. A. Khan and H. Y. Jeon

Constitutive Modeling of the Time-Dependent Stress-Strain Behavior of Soils and Applications 69
by J. H. Yin

Development of Transport Infrastructure in Congested Urban Environment 81
by C. F. Leung

Special Lectures
Design Decision Making for Infrastructures Under Restriction of the Energy Consumption 97
by Y. Honjo

Lateral Displacement Induced by Soil-Cement Column Installation 103
by J. C. Chai, T. Hino and D. Wenqi

Geosynthetics Applications: Some Research Studies and Some Case Studies 111
by R. Shivashankar and J. Jayamohan

Design and Performance of Soft Ground Improvement Using PVD with and without Vacuum Consolidation1 123
by P.V. Long, D.T. Bergado, L.V. Nguyen and A.S. Balasubramaniam

A New Cementing Agent From Calcium Carbide Residual and Fly Ash for Soil Stabilization 145
by S. Horpibulsuk and C. Phetchuay

Geotechnical Roles in Landslide Mitigation 151
by S. Soralump

Application of Resistivity Forward and Inverse Analyses to Aid Geophysical Mapping of Burried Utilities in 157
Bangkok Clays
by P. H. Giao

Finite Element Simulations of Vacuum Consolidation with PVD in Bangkok Soft Clay 163
by S. Youwai, P. Tansiri and P. Jongpradist

Effects of Cement Content on Unconfined Compressive Strength of Jamshoro Soil 169
by A. Kumar and G. B. Khaskheli

Why the Tohoku Earthquake Causes Higher Tsunami Wave Runup than the Sumatra Earthquake 177
by A. Siripong

Seismic Design Criteria for Large Embankment Dams of Hydropower Plants 195
by M. Wieland

German Long-Term Experience with Reinforced Motorway Embankments on Soft Soils: A Selected Case Study 205
by D. Alexiew and K. H. Blume

Analysis of Large Deformation of Aquifer Due to Groundwater Pumping in Shanghai 215
by S. L. Shen, L. Ma and Y. S. Xu

Hazard Zone Delineation and Damage Assessment of Debris Flow in Taiwan 219
by D. G. Lin, S. Y. Hsu, W. T. Liu, and K. K. Tien

Case Histories of Damaged and Undamaged Geotechnical Structures During the Great East Japan Disaster 231
by H. Hazarika, T. Hara, T. Ohsumi, M. Yamanaka, H. Furuichi and T. Yamazaki

Compression Behvior of Zinc Contaminated Clayey Soils Treated with Cements 243
by Y. J. Du and M. L. Wei

Theory and Practice of Electric Cone Penetration Test for Clay Ground 251
by T. Koumoto and S. Koslanant

Invited Speakers
Deep Excavation Failures, Can They Be Prevented? 259
by T. L. Gouw

Temperature Effects on the Tensile Strength and Elastic Stiffness of Geogrids 273
by W. Kongkitkul, W. Tabsombut, C. Jaturapitakkul and F. Tatsuoka

The Performance of Strengthening Slope Using Shotcrete and Anchor by Finite Element Method (FEM) 285
by T. Harianto, L. Samang, T. Hino, F. Usman and A. Walenna

Nonlinear Anisotropic Elastic Stiffness of Bangkok Clay 291
by S. Likitlersuang, S. Yimsiri, W. Ratananikom and C. Kingjeep

Green Building for Climate Change 303
by R. Narayan Khare and R. Narayan Khare

Interpretation of Quaternary Research and Countermeasure of Problematic Lime-Based Deep Mixing 307
Solidification in Ariake Sea Coastal Lowlands
by T. Hino, Y. Igaya, J. C. Chai, R. Jia and S. Sueyoshi

Interaction Between Kenaf Geogrid (LLGs) and Compacted Sand by Numerical Simulations 317
by T. Tanchaisawat, D. T. Bergado and S. Artidteang

Impact of Hydrogeological Environment and Land Subsidence Induced by Urbanization in Coastal Mega-cities 323
by Y. S. Xu, S. L. Shen, and J. C. Chai

Geotextile Tubes for Protection of Mangrove Coastlines in Peninsular Malaysia 329
by T.W. Yee, L.K. Lim and Z.Y. Wang

Using Shear Wave Velocity to Determine the Cementation of Soft Bangkok Clay Mixed with Cement 339
by K Piriyakul and T. Gi-nga

Consolidation of Soft Clay Using Composite Vertical Geodrains Through Inward Radial Drainage 343
by M. V. Shah and A. V. Shroff

In Situ Evaluation of Nuclear Density Cone Penetrometer in Marine Sediments 353
by R. Jia, T. Hino, T. Hamada and M. Yoshimura

Migitation of Long-term Settlement of Peat Using Vacuum Preloading 361
by H. Hayashi and S. Nishimoto

Risk Evaluation and Realibilty-Based Design of Earth-fill Dams for Overflow Due to Heavy Rains 367
by S. Nishimura, K. Fujisawa and H. Nagao

Evaluation of Erosion Control Products on Steep Slopes by using Performance and Index Tests 375
by E. Németh, J. Böker, H. Zanzinger, K. Marzini and J. Eppel

Site Characterization of Taytay, Palawan, Philippines Rainfall Triggered Shallow Landslide 383
by C. A. Bacosa

Cumulative Rainfall Departure Approach to Estimate Probability of Landslide as Impact of Climate Change 391
by B. Setiawan, Z. G. Fad and J. Mulia

Behavior of Wall/Embankment with Geogrid and Metallic Reinforcements and Verification of K-Stiffness 401
Working Stress Method
by D.T. Bergado, M. Nualkliang, C.T. Chen and S.S. Lin

Introduction to the Sydney Soil Model 409
by M. D. Liu, J. P. Carter and D. W. Airey

Technical Papers
Flexural Behaviour of the Composite Styrofoam Filled Concrete Beams 429
by R. Djamaluddin and A. M. Akkas

Lateral Resistance of a Single Vertical Pile Installed Near Geogrid-Reinforced Slope 435
by S. M. A. Zomorodian and H. Sadeghi

Infiltration Model Test Using Modification of Rainfall Simulator with Constant Head 445
by H. Arfan and A. Zubair

State of the Long-Term Settlement Behavior of the Metro Tunnel in Shanghai 457
by H. N. Wu, S. L. Shen, and Y. S. Xu

The Absorption Coefficient Characteristics of Makassar City Inundation 459
by J. Patanduk, S. Pongmanda, I. Burhanuddin, and E. Tanggulungan

Construction of Rural Road with Jute Geotextiles - A Case Study 465
by P. K. Choudhury, N. K. Mukherjee and T. Sanyal

Passive Pressure on Retaining Wall with Translational Movement Mode with Backfill of Anisotropic Sand 473
by A. B. Muhiddin and I. Ishibashi

Experimental Study on Interface Shear Behavior Between Sand and Glass Fibre Reinforced Polymer 489
by H. Shaia and H. Abuel-Naga

Mechanical Properties of Soft Clays Lightly Treated by Cement/Lime 497
by N. D. Quang, J. C. Chai, T. Hino, T. Negami

Carbon Footprint of a Polli-Brick Soil Retaining Structure 507
by Y. Xu and J. P. Wang

Model Test of Permeable Geosynthetics Tubes 513
by W. Guo, J. Chu, and S. Yan

Cyclic Deformation Properties of Geomaterials Derived From Recycled Tires 523
by F. Niiya, H. Hazarika, N. Yasufuku and K. Omine


Laboratory Test on Self Healing Capacity of GCL 531
by K. Sari, J. C. Chai, T. Hino and M. Mizuno

Road Management and Road Maintenance 539
by R. M. AlZubaidi

An Apparatus for Specimens Preparation and Testing of Grouted Soil 545
by R. R. Al-Omari, M. S. Al-Soud and A. M. Al-Kinani

Seismic Stability Analysis of Badush Dam 553
by S. A. Khattab and A. A.Khalil

Geochemistry and Tectonic Setting of the Volcanic Rocks of the Ziarat Area, Pakistan 561
by A. Tawab Khan, A. Kilinc, A. M. Kasi, A. S. Khan, D. M. Kakar

Comparison of LWD and PLT for Surface Modulus Evaluation 573
by T. Posribink, W. Kongkitkul, S. Youwai and P. Jongpradist


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  Advanced Structural Analysis by Devdas Menon
Posted by: gabuchia - 06-22-2012, 05:16 AM - Forum: Archive - No Replies

Full title: Advanced Structural Analysis
Author(s): D. Menon
Publisher: Alpha Science Intl Ltd (August 12, 2009)
Language: English
ISBN-10: 1842654977
ISBN-13: 978-1842654972

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Please do share this book if anyone has it! Thanks!!

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  BS 4483:2005 Steel fabric for the reinforcement of concrete. Specification
Posted by: miquan - 06-22-2012, 04:26 AM - Forum: British Standards (BS) - No Replies

BS 4483:2005 Steel fabric for the reinforcement of concrete. Specification

Author: Committee ISE/104 | Size: 0.5 MB | Format: PDF | Quality: Original preprint | Publisher: BSI | Year: 2005 | pages: 18 | ISBN: 0 580 46589 6

[Image: 69543089935598605841.jpg]


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Reinforcing steels, Structural steels, Meshes, Wires, Steels, Concretes, Reinforcement, Welded joints, Ordering, Dimensions, Dimensional tolerances, Preferred sizes, Mass, Area, Marking, Designations, Inspection, Mechanical properties of materials, Quality control, Tensile testing, Bend testing, Approval testing, Certification (approval), Test specimens, Records (documents)

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  Finite Element Analysis: Theory and Practice
Posted by: cheyne - 06-21-2012, 01:50 PM - Forum: Archive - Replies (1)

Title Finite Element Analysis: Theory and Practice
Longman Scientific and Technical
Author M. J. Fagan
Edition illustrated, reprint
Publisher Longman Scientific & Technical, 1992
ISBN 0582022479, 9780582022478

Any help with this would be greatly appreciated.

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  In Situ Dynamic Characteristics of Reinforced Concrete Shear Wall Buildings
Posted by: mybest - 06-21-2012, 11:57 AM - Forum: Civil Engineering MSc and PhD thesis - Replies (1)

In situ dynamic characteristics of reinforced concrete shear wall buildings - Gilles, Damien.7z

Author: Damien Gilles | Size: 2 MB | Format: PDF | Quality: Original preprint | Publisher: Proquest | Year: Feb-2011 | pages: 296

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[Image: 63744839382823260874.jpg][Image: 13276640245145592731.jpg]


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  CSI Analysis Files Delete
Posted by: RANA WASEEM - 06-21-2012, 11:53 AM - Forum: Non Engineering Software - No Replies

Dear all, its been hard to unlock CSI (etabs, safe, sap) models and delete analysis files one by one. I have written a very basic program that will delete all the analysis files of SAFE, ETABS and SAP even inside the directories.

Just copy the program to the main folder in which you may or may not have further sub directories. You dont need to copy it to each folder. Just copy in the main folder

And then run it

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  Source Insight 3.50.0070
Posted by: BennyP - 06-21-2012, 11:08 AM - Forum: Non Engineering Software - Replies (2)

Source Insight 3.50.0070

Size: 4.8 MB
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Source Insight was designed for large, demanding, real world programming projects. In fact, Source Insight is being used today to develop some of the largest and most successful commercial software products ever written.

Source Insight™ is a project-oriented program editor and code browser, with built-in analysis for C/C++, C#, and Java programs. Source Insight parses your source code and maintains its own database of symbolic information dynamically while you work, and presents useful contextual information to you automatically.

Not only is Source Insight a great program editor, but it also can display reference trees, class inheritance diagrams, and call trees. Source Insight features the quickest navigation of source code and source information of any programming editor.

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  Deformation and Progressive Failure in Geomechanics
Posted by: freequo - 06-20-2012, 07:06 PM - Forum: Archive - No Replies

Deformation and Progressive Failure in Geomechanics

Author: A. Asaoka, T. Adachi, F. Oka | Size: Unknown MB | Format: PDF | Quality: Unspecified | Publisher: Pergamon | Year: 1997 | pages: 952 | ISBN: 008042838X

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connection with slope stability and foundation problems. It is associated with strain localization or shear banding and is also related to damage in material structures. As knowledge of the progressive failure mechanism increases, it is now necessary to establish effective communications between researchers and engineers.
The International Symposium on Deformation and Progressive Failure in Geomechanics provided an opportunity for discussing recent advances in this area.

A total of 136 papers were contributed from 22 countries. As well as these, the symposium proceedings also contain 8 interim technical reports on the subject by the members of the Asian Technical Committee of the International Society for Soil Mechanics and Foundation Engineering and the Japanese Geotechnical Society National Committee on Progressive Failure in Geo-structures

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