`Uncertainties appear everywhere in the model. When using a mathematical model, careful attention must be given to the uncertainties in the model.' (Feynman, 1988)
`New methods for treating uncertainty will become important in virtually all branches of mechanics.' (Oden, Belytschko, Babuska and Hughes, 2003)
`Scienti c progress usually can only be achieved by experts of di erent disciplines working together.' (Eschenauer and Olho , 2001)
`The ethics of our profession today does not allow any design for a structure without optimization.' (Mungan, 2001)
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fib Bulletin No. 57 - Shear and punching shear in RC and FRC elements
Author: This Bulletin N° 57 is a collection of individual contributions to a workshop. | Size: 80 MB | Format:PDF | Quality:Scanner | Publisher: International Federation for Structural Concrete (fib) | Year: 2010 | pages: 268 | ISBN: 978-2-88394-097-0
fib Bulletin 57 is a collection of contributions from a workshop on "Recent developments on shear and punching shear in RC and FRC elements", held in Salò, Italy, in October 2010. Shear is one of a few areas of research into fundamentals of the behaviour of concrete structures where contention remains amongst researchers. There is a continuing debate between researchers from a structures perspective and those from a materials or fracture mechanics perspective about the mechanisms that enable the force flow through a concrete member and across cracks.
In 2009, a Working Group was formed within fib Task Group 4.2 "Ultimate Limit State Models" to harmonise different ideas about design procedures for shear and punching. An important outcome of this work was the ensuing discussions between experts and practitioners regarding the shear and punching provisions of the draft fib Model Code, which led to the organization of the Salò workshop. Invited experts in the field of shear and FRC gave 18 lectures at the workshop that was attended by 72 participants from 12 countries in 3 different continents.
The contributions from this conference as compiled in this bulletin are believed to represent the best of the current state of knowledge. They certainly are of general interest to fib members and especially helpful in the finalization of the 2010 fib Model Code. It is hoped that this publication will stimulate further research in the field, to refine and harmonize the available analytical models and tools for shear and punching design.
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Performance Based Earthquake Engineering for Tall Building Design
Size: 378 MB
Performance Based Earthquake Engineering for Tall Building Design
Taken on April 19 to 21 , 2011 , San Francisco , CA .
Presented by Jack Moehle , University of California , Berkeley
This Guideline Material is divided in 13 parts
1 - PBEE for Tall Building Design - Welcome
2 - PBEE for Tall Building Design - Overview of Performance-Based Earthquake Engineering
3 - PBEE for Tall Building Design TBI - Design Guidelines
4 - PBEE for Tall Building Design Performance - Objectives
5 - PBEE for Tall Building Design - TBI Design Guidelines
6 - PBEE for Tall Building Design - Service Level and MCE Analysis
7 - PBEE for Tall Building Design - PEERATC-72-1 Modeling
8 - PBEE for Tall Building Design - Overview of Previous Night
9- PBEE for Tall Building Design - Ground Motions developed for the Case Studies
10 - PBEE for Tall Building Design - Design & Iteration
11 - PBEE for Tall Building Design - Analysis & Iteration
12 - PBEE for Tall Building Design - Performance Analysis (Loss Estimation)
13 - PBEE for Tall Building Design - Q&A
flv video file , 305 minutes , 640x480 pixels , 546 Mb after extracting .
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The use of finite element methods to model compensation grouting
Author: D. P. Nicholson; C. Gammage; T. Chapman | Size: 1.18 MB | Format:PDF | Quality:Original preprint | Source: Grouting in the Ground, Thomas Telford, London | Year: 1994 | pages: pp 297-312 | ISBN: 978-0727719287, Ebook ISBN: 978-0727740175
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Comparison of different approaches to model compensation grouting
Author: K. G. Higgins, A. Grammatikopoulou, D. M. Potts, Z. Cabarkapa, J. N. Franzius, F. C. Schroeder | Size: 0.3 MB | Format:PDF | Quality:Original preprint | Publisher: Numerical Models in Geomechanics Proceedings of the Tenth International Symposium on Numerical Models in Geomechanics (NUMOG X), Rhodes, Greece | Year: 25-27 April 2007 | pages: 6 | ISBN: 0415440270, ISBN-13: 978-0415440271
Settlement related building damage caused by the construction of new tunnels has become a major issue in new urban infrastructure projects. Protective measures, such as compensation grouting are now often applied in order to minimize the impact of tunnelling on existing structures. It has been observed during different construction projects that the pressure due to grouting can have a damaging effect on the lining of newly constructed or existing tunnels and therefore it is often required to allow for the load due to grouting in tunnel lining design. Numerical methods are frequently used for this purpose. However, there is a lack of understanding of how the grouting pressure is transferred into the ground. This paper presents a plane strain Finite Element (FE) study in which compensation grouting is modelled in detail by incrementally applying the grouting pressure over a range of grouting ports. The results are compared with analyses in which the grouting pressure is applied over a wider extent of the tube-á-manchette (TAM) and recommendations are given for the FE modelling of compensation grouting.
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Hello Friends,
I'm looking for this aticles about compensation grouting:
Comparison of different approaches to model compensation grouting
K. G. Higgins, A. Grammatikopoulou, D. M. Potts, Z. Cabarkapa, J. N.
Franzius, F. C. Schroeder
Numerical Models in Geomechanics
Proceedings of the Tenth International Symposium on Numerical Models in
Geomechanics (NUMOG X), Rhodes, Greece, 25-27 April 2007
Numerical modelling of compensation grouting above shallow tunnels
C. Wisser,*,
C. E. Augarde,
H. J. Burd
International Journal for Numerical and Analytical Methods in Geomechanics
The use of finite element methods to model compensation grouting
Authors: D. P. Nicholson; C. Gammage; T. Chapman
Source: Grouting in the Ground , pp 297-312
Hardbound ISBN: 978-0-7277-1928-7
Ebook ISBN: 978-0-7277-4017-5
Format: Hardbound, Electronic
Factors Affecting Long-Term Efficiency of Compensation Grouting in Clays
Au, S., Soga, K., Jafari, M., Bolton, M., and Komiya, K.
Journal of Geotechnical and Geoenvironmental Engineering, March 2003, Vol.
129, No. 3 : pp. 254-262
Time Stopper is a tiny utility which eliminate the time limit existing into trial software usage period.
Time Stopper works with any software executable file and practically will extend the trial period of the program for an unlimited amount of time.
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