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The publication identifies disturbed regions of structures resulting from geometric or force discontinuities where Strut-and-Tie Model (STM) must be used. A step-by-step procedure for STM is provided. Five detailed design examples are also provided: (1) Design of cap beam, (2) Design of footing, (3) Design of pile cap, (4) Design of dapped end region of girder, and (5) Design of hammerhead pier.
Insecure transportation systems are costing our worldwide mobility-based economy as much as 6% of GDP annually. The effectiveness of security measures vary widely. In the United States, depending on the mode of transportation, it ranges from "medium effectiveness" for airports to "low effectiveness" for maritime, rail, transit, and intermodal activities. Situational awareness and interoperability are lacking as we try to deal with both natural and man-made disasters. Regardless of the transport mode, improvements are essential if governments and corporations are to address security planning, response, and national preparedness. Transportation Security examines this problem in a comprehensive manner and addresses security-based technologies and solutions to minimize risk.
* Covers air, sea, roadway, rail and public transport modes
* Offers technological solutions for mobility based problems in planning, logistics and policy to improve security, combat terrorism and ensure national preparedness
* Includes work of international experts & global examples related to transportation security
Author: IR. Liew Shah Shong & Fong Chew Chung | Size: 2 MB | Format:PDF | Quality:Original preprint | Publisher: Geotechnical Cource for Pile Foundation Design & Construction | Year: 2003 | pages: 49
Abstract :
This paper discusses the micropiles classification, design concept, problems associated with the common installation methods, construction control and performance of this piling system. Micropiiles can be designed as soil frictional piles and rock socketed piles either under tension or compression. Discussions will be addressed on the strain compatibility between the steel reinforcements and the grout under high carrying working load and the effects of grout in rock socketed micropile with permanent casings in the overburden soil. The strain compatibility problem of micropile, although important, is usually overlooked by many engineers. However, the inherent conservatism in the micropile design man obscure this compatibility problem. Construction control is another important aspect to warrant success of the micropiling system. Case histories on the construction problems, such as jointing of the reinforcements, disturbance to the subsurface materials induced by the different installation techniques and control of grouting operation, will be presented and discussed. Results of static pile load tests of micropiles are also presented. Generally, rock socketed micropiiles usually experience very small residual settlement as compared to other piling systems.
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RM™ Bridge (Select Series 3) v08.10.07.02 - TRIAL ONLY
Size: 404 MB
New features compare with Select Series 2
It fixes reported common problems and adds new functionalities:
*New Interface between RM Bridge and Bentley Rebar available
*Earthquake AnalysisThe tendon geometry calculation was completely revised
*Macros for Response spectrum definitions added
-Chinese code JTG D62
-AASHTO LRFD 2007
-AASHTO LRFD 2012
-CQC Mode superposition revised
-CQCX Mode superposition extended to allow *for evaluating also concurrent values
*Steel design improved, examples and manual are available
*Localsiation improved
*Russian GUI translation completed
*Proof checks for concrete structures in accordance with SniP are partly available
*The old implementation of Hong Kong standard has been revised and adapted
*ULTCHK: Reinforcement defined at composite was not considered ? fixed
*ULTSUP: Tendon results were not treated correctly fixed
*CANTILEVER : Module did not work properly – fixed
* Element-CS: Editing an element of type Viscous Damper cleared the angle value -fixed
*SELECT Licensing: Node lock license activation does not create an entry for the used country.
*Uses now location definition of Windows operating system
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Author: Ir. Tan Yean Chin & Chow Chee Meng | Size: 1.75 MB | Format:PDF | Quality:Original preprint | Publisher: Geotechnical Course for Pile Foundation Design & Construction | Year: 2003 | pages: 74
Abstract :
This paper presents some aspect of design and construction of bored pile foundation in Malaysia. Empirical equations correlating the value of the ultimate shaft resistance (fsu) and the ultimate base resistance (fbu) to SPT 'N' values are suggested as design of bored piles under axial compression in Malaysia is usually based on the SPT, Which is extensively carried out at site. Some aspects of design and construction in difficult ground conditions such as limestone areas and soft ground are presented together with some suggestions on quality control for bored pile construction.
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During installation of Plastic Vertical Drains (PVD) large forces can occur that rupture the drain or filter fabric. To determine these forces laboratory and field tests are executed whereby the forces are measured by strain gages during installation of the drains. The tests showed that under circumstances these forces could exceed the requirements mentioned in certain norms. The forces were caused by the fact that high performance PVD installation rigs were used in combination with large depths and hard top layers. Also other circumstances can influence the forces in drains during installation. This paper describes all the factors that influence the forces in PVD.
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RAM Connection V8i (SELECTseries 4) 8.0.0.23 1000 days trial
Size: 157 MB
RAM Connection, a flexible and powerful program for analysis and design of steel connection for W, HSS and similar sections.
This software offers the best flexibility for the design of different shear, moment, braces, splices and base plates connection types. It is based on the AISC, ASD and LRFD codes, and the British Standard.
The standalone version works independently of any other software.
The connections can be designed in three different ways in RAM Connection Standalone (RCSA).
The first method can be called trial and error, in which the user defines a database with all the different connections (notice that several connections are already provided by the software) and assign them, to the joint, one by one. The software will indicate if the connection assigned is adequate or not. If the connection is not adequate, the user can assign manually another connection or adjust the initial one in such a way that fulfills all the requirements.
The second method consists in making the program search in a list of the connections database until it founds a connection that works well in the joint (according to geometry and loads).
The third method is similar to the second but instead of searching in a pre-defined list the software assigns a smart connection that adapts to the joint. In these connections, the design is automatically where the parameters of the connections (e.g. bolt number, weld size, plate size, etc) are adjusted until the connection fulfills the requirements.
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IMPORTANT NOTICE: You may use this software for evaluation purposes only.
If you like it, it is strongly suggested you buy it to support the developers.
By any means you may not use this software to make money or use it for commercial purpose.
Author: Sam Clarke | Size: 2.7 MB | Format:PDF | Quality:Original preprint | Publisher: The University of Sheffield | Year: 2006 | pages: 50
A Final Report of a Student from Department of Civil and Structural Engineering, University of Sheffield.
Abstract :
This project is concerned with the design of a program to calculate the optimal solution for geotechnical problems involving the consolidation of soft ground by the use of prefabricated vertical drains. The effects being taken into account include smear, well resistance, ramped loading and multiple layers. The program has allowed the author to complete a series of parametric studies into the effects of the factors which contribute to the rate of consolidation using vertical drains. The final solution is a distributable program that uses an intuitive graphical user interface. This allows the user to input soil parameters and assumptions and then run the program to find the optimal spacing of drains to achieve a given consolidation in a given time. An element of probabilistic analysis has also been incorporated into the program to allow the creation of risk to cost curves for any parameters. This allows the user to make an educated decision based on the allowable cost and the degree of certainty in the soil parameters.
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Acceleration of Self-Weight Consolidation Settlement by Prefabricated Vertical Drain Board
Author: Soo-Sam Kim, Sang-Jae Han, Ryong Lee & Young-Su Chae | Size: 1 MB | Format:PDF | Quality:Original preprint | Publisher: The International Society of Offshore and Polar Engineers | Year: 2002 | pages: 5 | ISBN: 1-880653-58-3
Abstract :
In dredging and reclamation, self-weight consolidation of marine clay need relatively long time. In this study, to accelerate self-weight consolidation time laboratory large size column test were performed using prefabricated vertical drain board. And also presented optimum time of prefabricated vertical drain board insert. Prefabricated vertical drain board-test result showed l/2 time to consolidation compared to Selfweight consolidation-test. Therefore, It can be judged that in reclamation of dredged marine clay, prefabricated vertical drain board can used to accelerate self-weight consolidation.
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