[PDF] Blast Loading Of Small Buried Arches - eBooks Review

Blast Loading Of Small Buried Arches


Blast Loading Of Small Buried Arches
DOWNLOAD

Download Blast Loading Of Small Buried Arches PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Blast Loading Of Small Buried Arches book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page



Blast Loading Of Small Buried Arches


Blast Loading Of Small Buried Arches
DOWNLOAD
Author : Jay R. Allgood
language : en
Publisher:
Release Date : 1963

Blast Loading Of Small Buried Arches written by Jay R. Allgood and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Arches categories.


It was evident that the passive pressures which developed on the sides played the dominant role in providing resistance. It has been found that in static tests some of the surface load is carried by arching through the soil. In the dynamic tests the inertial forces of the soil above the arch were found to be important. The inertial load overcame the soil shear resistance so that a load approximately equal to the surface load acted on the structure. A model analysis of the system and subsequent comparison of the deflections from the small-structure tests and the Operation Plumbbob Structure 3.3 tests indicate that modeling of deflections is possible.



Static Loading Of Small Buried Arches


Static Loading Of Small Buried Arches
DOWNLOAD
Author : H. L. Gill
language : en
Publisher:
Release Date : 1964

Static Loading Of Small Buried Arches written by H. L. Gill and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with categories.


Static and dynamic tests have been performed to study the behavior of small buried arches. The objective was to gain information which will serve as a guide in developing design methods for underground structures. This report describes the static tests, the prime purposes of which were: (1) to obtain information on the behavior of a statically loaded soil-arch system, and (2) to provide data for comparison with that from a similar system subjected to blast loading. The test configuration consisted of two conterminous semicircular arches each 30 inches in diameter buried in dry sand with 6 inches of cover over the crown. The arches were identical except for differing footing widths. The entire system was contained by the NCEL atomic blast simulator pit, which is 9 feet by 10 feet in plan and 12 feet deep. Static loads up to 25 psi were applied to the surface of the sand as various measurements were being made. The test results show that the expected decrease in footing deflection with increase in footing width was accompanied by an increase of maximum moment in the arch. (Author).



Similitude Study Of Flexible Buried Arches Subjected To Blast Loads


Similitude Study Of Flexible Buried Arches Subjected To Blast Loads
DOWNLOAD
Author : Jimmy P. Balsara
language : en
Publisher:
Release Date : 1968

Similitude Study Of Flexible Buried Arches Subjected To Blast Loads written by Jimmy P. Balsara and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Aluminum categories.


The objective of the study was to investigate and verify model-to-prototype scaling relations for blast loaded buried arches that respond both elastically and inelastically. Four geometrically similar, semicircular aluminum alloy arches with 4-, 8-, 12-, and 36-inch diameters were buried in dense dry sand and subjected to air-blast-induced loads on the surface. The tests were conducted at the Large Blast Load Generator located at the U.S. Army Engineer Waterways Experiment Station. The results of two series of tests, each consisting of 3 repeated shots, ranging from 70 to 300 psi, are presented. Within the range of parameters investigated, the scaling of the dependent variables were adequately verified. These variables included acceleration, velocity, displacement, thrust, and bending moment. (Author).



Technical Report


Technical Report
DOWNLOAD
Author :
language : en
Publisher:
Release Date :

Technical Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Civil engineering categories.




Shock Vibration And Associated Environments


Shock Vibration And Associated Environments
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1963

Shock Vibration And Associated Environments written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Shock (Mechanics) categories.




A Model Study Of Dynamically Loaded Square Footings On Dry Sand


A Model Study Of Dynamically Loaded Square Footings On Dry Sand
DOWNLOAD
Author : Jack K. Poplin
language : en
Publisher:
Release Date : 1969

A Model Study Of Dynamically Loaded Square Footings On Dry Sand written by Jack K. Poplin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Engineering models categories.


The investigation reported herein was undertaken to develop an approach to modeling displacements of surface and shallow-buried footings on dry sand subject to high-intensity, single-pulse loads. A hypothetical shallow-bured structure with an isolated footing loaded by airblast overpressure produced by detonation of a nuclear weapon was assumed for design of load pulses on nine model footings used: footing widths of 4.5, 6.0, and 7.5 in. and depth-of-burial to footing width ratios of 0, 0.5, and 1.0. The principles of similitude were used to scale length, force, and time in the models. The models were placed in mobile test bins of uniform, fine, dry sand (90 percent relative density) and subjected to dynamic and static loading. Nondimensional load-displacement relations dependent only on depth-of-burial ratio were developed relating maximum displacement to peak dynamic load, footing width, and soil shear strength gradient. When the dynamic response of the footings in the form of reaction-displacement curves was compared with static response, an increase in initial stiffness and ultimate strength was observed for dynamic loading. However, these dynamic increases were greatest when the static shear strength was lowest, i.e. footings on the surface, and were least for footings buried at a depth equal to its width where the static overburden produced a substantial increase in shear strength. (Author).



An Experimental Study Of Arching In Sand


An Experimental Study Of Arching In Sand
DOWNLOAD
Author : James Walsh McNulty
language : en
Publisher:
Release Date : 1965

An Experimental Study Of Arching In Sand written by James Walsh McNulty and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Arches categories.




Model Study Of Dynamically Loaded Arch Structures


Model Study Of Dynamically Loaded Arch Structures
DOWNLOAD
Author : Don R. Denton
language : en
Publisher:
Release Date : 1966

Model Study Of Dynamically Loaded Arch Structures written by Don R. Denton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Building, Bombproof categories.


As a part of this program, a series of laboratory model and prototype structures was tested dynamically in the Blast Load Generator facility located at WES to evaluate the use of scale-model tests in predicting the elastic response of a laboratory-size prototype structure to dynamic loads. Presented in this paper are the results of tests of three metal arch structures having diameters of 8, 16, and 24 in., respectively, placed at various depths of burial in dry sand and subjected to ground surface overpressures ranging from 57 to 196 psi.



The Shock And Vibration Bulletin


The Shock And Vibration Bulletin
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1968

The Shock And Vibration Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Shock (Mechanics) categories.




Technical Abstract Bulletin


Technical Abstract Bulletin
DOWNLOAD
Author : Defense Documentation Center (U.S.)
language : en
Publisher:
Release Date : 1963-05

Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963-05 with Military art and science categories.