Geotechnical Investigations for Tunneling & Pipe Jacking
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Dear friends, I need papers listed below
anyone could help me to get them?
thanks in advanse.
1) Geotechnical Investigations for Tunneling & Pipe Jacking
by Gregory L. Raines
pp. 516-527
Proceedings of the 1998 Pipeline Division Conference, ASCE:
Pipelines in the Constructed Environment
by Joseph P. Castronovo, (editor) and James A. Clark, (editor)
2) The Influence of Geologic Setting on Microtunneling
by David C. Mathy, M.ASCE and Dru R. Nielson
pp. 113-122
Proceedings of the 1998 Pipeline Division Conference, ASCE:
Pipelines in the Constructed Environment
by Joseph P. Castronovo, (editor) and James A. Clark, (editor)
To the engineer, the matenals making up the Earth's crust aredivided invariably into the categories of soil. Differing fromthe way an agronomist considers soil, the engineer's concernwith the same lies in the fact that it more far-ranging, goingbeyond an agricultural necessity as the natural medium forgrowth of all land plants; for engineers, the term soil extendsfrom the ground surface down to its contact with a layer ofhard rock.
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This Specification deals with structural steelwork designed in accordance with: BS 5950-1 Structural use of steelwork in buildings: Code of practice for design: rolled and welded sections
BS EN 1993-1-1 Eurocode 3: Design of steel structures – Part 1.1: General rules and rules for buildings
It can be used for all types of building construction designed for static loading. It is not intended to be used for steelwork in dynamically loaded structures or if fatigue is a factor unless appropriate amendments are made. The Specification describes the information to be included in a Project Specification, and also covers materials, preparation of drawings, fabrication, erection and the requirements for protective treatment including standard paint coatings. Specific requirements are placed on the Steelwork Contractor and the Employer. Other requirements are allocated to the Engineer, who may not be directly a party to the steelwork contract, but may be engaged by the Employer or by the Steelwork Contractor. It should also be noted that in certain design-build contracts design responsibility is shared and in these instances the role of Engineer will have to be allocated. This Specification should be introduced into a steelwork contract by a Project Specification, the contents of which are described herein. The Project Specification should also include any additions or modifications that may be required to the National Structural Steelwork Specification by the Employer for a particular contract if the form of behaviour or other aspects of the structure are unorthodox.
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Author: Gross, D., Hauger, W., Schröder, J., Wall, W., Govindjee, S. | Size: 2.7 MB | Format:PDF | Publisher: Springer | Year: 2011 | pages: 359 | ISBN: 9783642140181
Presents undergraduates in mechanical and civil engineering with a clear knowledge of engineering mechanics
Covers numerous topics
Each chapter contains a variety of problems and solutions
English translation of a bestselling textbook on engineering mechanics education in German-speaking countries
Dynamics is the third volume of a three-volume textbook on Engineering Mechanics. It was written with the intention of presenting to engineering students the basic concepts and principles of mechanics in as simple a form as the subject allows. A second objective of this book is to guide the students in their efforts to solve problems in mechanics in a systematic manner. The simple approach to the theory of mechanics allows for the different educational backgrounds of the students. Another aim of this book is to provide engineering students as well as practising engineers with a basis to help them bridge the gaps between undergraduate studies, advanced courses on mechanics and practical engineering problems. The book contains numerous examples and their solutions. Emphasis is placed upon student participation in solving the problems. The contents of the book correspond to the topics normally covered in courses on basic engineering mechanics at universities and colleges. Volume 1 deals with Statics; Volume 2 contains Mechanics of Materials.
Content Level » Lower undergraduate
Keywords » Newton's laws - acceleration - angular momentum - degree of freedom - eigenfrequency - harmonic vibrations - impact - kinematics - kinetic energy - linear momentum - mass moments of inertia - numerical simulation - potential energy - principles of mechanics - resonance - rigid bodies - rotation - velocity - work-energy theorem
Related subjects » Mechanical Engineering - Mechanics
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EN 1317 - European standard for Road Restraint Systems
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TM 5-818-5/AFM 88-5, Chap 6/NAVFAC P-418 - dewatering and groundwater control
Size: 4.8 MB | Format:PDF
This manual provides guidance for the planning, design, supervision, construction, and operation of dewatering and pressure
relief systems and of seepage cutoffs for deep excavations for structures. It presents: description of various methods of dewatering and pressure reliefi techniques for determining groundwater conditions, characteristics of pervious aquifers, and dewatering requirements; guidance for specifying requirements for dewatering and seepage control measures; guidance for
determining the adequacy of designs and plans prepared by contractors; procedures for designing, installing, operating, and checking the performance of dewatering systems for various types of excavations; and descriptions and design of various types of cutoffs for controlling groundwater.
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Hidden inside the skeletons of high-rise towers, extra steel bracing, giant rubber pads and embedded hydraulic shock absorbers make modern Japanese buildings among the sturdiest in the world during a major earthquake. And all along the Japanese coast, tsunami warning signs, towering seawalls and well-marked escape routes offer some protection from walls of water.
These precautions, along with earthquake and tsunami drills that are routine for every Japanese citizen, show why Japan is the best-prepared country in the world for the twin disasters of earthquake and tsunami — practices that undoubtedly saved lives, though the final death toll is unknown.
In Japan, where earthquakes are far more common than they are in the United States, the building codes have long been much more stringent on specific matters like how much a building may sway during a quake.
After the Kobe earthquake in 1995, which killed about 6,000 people and injured 26,000, Japan also put enormous resources into new research on protecting structures, as well as retrofitting the country’s older and more vulnerable structures. Japan has spent billions of dollars developing the most advanced technology against earthquakes and tsunamis.
Japan has gone much further than the United States in outfitting new buildings with advanced devices called base isolation pads and energy dissipation units to dampen the ground’s shaking during an earthquake.
The isolation devices are essentially giant rubber-and-steel pads that are installed at the very bottom of the excavation for a building, which then simply sits on top of the pads. The dissipation units are built into a building’s structural skeleton. They are hydraulic cylinders that elongate and contract as the building sways, sapping the motion of energy.
Of course, nothing is entirely foolproof. Structural engineers monitoring the events from a distance cautioned that the death toll was likely to rise as more information became available. Dr. Jack Moehle, a structural engineer at the University of California, Berkeley, said that video of the disaster seemed to show that some older buildings had indeed collapsed.
The country that gave the world the word tsunami, especially in the 1980s and 1990s, built concrete seawalls in many communities, some as high as 40 feet, which amounted to its first line of defense against the water. In some coastal towns, in the event of an earthquake, networks of sensors are set up to set off alarms in individual residences and automatically shut down floodgates to prevent waves from surging upriver.
Critics of the seawalls say they are eyesores and bad for the environment. The seawalls, they say, can instill a false sense of security among coastal residents and discourage them from participating in regular evacuation drills. Moreover, by literally cutting residents’ visibility of the ocean, the seawalls reduce their ability to understand the sea by observing wave patterns, critics say.
Waves from Friday’s tsunami spilled over some seawalls in the affected areas. “The tsunami roared over embankments in Sendai city, washing cars, houses and farm equipment inland before reversing directions and carrying them out to sea,” according to a statement by a Japanese engineer, Kit Miyamoto, circulated by the American Society of Civil Engineers. “Flames shot from some of the houses, probably because of burst gas pipes.”
But Japan’s “massive public education program” could in the end have saved the most lives, said Rich Eisner, a retired tsunami preparedness expert who was attending a conference on the topic at the National Institute of Standards and Technology in Gaithersburg, Md., on Friday.
In one town, Ofunato, which was struck by a major tsunami in 1960, dozens of signs in Japanese and English mark escape routes, and emergency sirens are tested three times a day, Mr. Eisner said.
Initial reports from Ofunato on Friday suggested that hundreds of homes had been swept away; the death toll was not yet known. But Matthew Francis of URS Corporation and a member of the civil engineering society’s tsunami subcommittee, said that education may have been the critical factor.
“For a trained population, a matter of 5 or 10 minutes is all you may need to get to high ground,” Mr. Francis said.
That would be in contrast to the much less experienced Southeast Asians, many of whom died in the 2004 Indian Ocean tsunami because they lingered near the coast. Reports in the Japanese news media indicate that people originally listed as missing in remote areas have been turning up in schools and community centers, suggesting that tsunami education and evacuation drills were indeed effective.
Unlike Haiti, where shoddy construction vastly increased the death toll last year, or China, where failure to follow construction codes worsened the death toll in the devastating 2008 Sichuan earthquake, Japan enforces some of the world’s most stringent building codes. Japanese buildings tend to be much stiffer and stouter than similar structures in earthquake-prone areas in California as well, said Mr. Moehle, the Berkeley engineer: Japan’s building code allows for roughly half as much sway back and forth at the top of a high rise during a major quake.
The difference, Mr. Moehle said, comes about because the United States standard is focused on preventing collapse, while in Japan — with many more earthquakes — the goal is to prevent any major damage to the buildings because of the swaying.
New apartment and office developments in Japan flaunt their seismic resistance as a marketing technique, a fact that has accelerated the use of the latest technologies, said Ronald O. Hamburger, a structural engineer in the civil engineering society and Simpson Gumpertz & Heger, a San Francisco engineering firm.
“You can increase the rents by providing a sort of warranty — ‘If you locate here you’ll be safe,’ ” Mr. Hamburger said.
Although many older buildings in Japan have been retrofitted with new bracing since the Kobe quake, there are many rural residences of older construction that are made of very light wood that would be highly vulnerable to damage. The fate of many of those residences is still unknown.
Mr. Miyamoto, the Japanese engineer, described a nation in chaos as the quake also damaged or disabled many elements of the transportation system. He said that he and his family were on a train near the Ikebukuro station when the earthquake struck. Writing at 1:30 a.m., he said that “we are still not far from where the train stopped.”
“Japan Railway actually closed down the stations and sent out all commuters into the cold night,” he said. “They announced that they are concerned about structural safety. Continuous aftershocks make me feel like car sickness as my family and I walk on the train tracks.”
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Extracted from "The New York Times" written by James Glanz, Published: March 11, 2011
The link is for a torrent. Downloaded and installed in Windows 7 64 bit. Used 057D1 as code (see the keys thread in Autodesk software subforum).
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