Download or read book Testing Using a Large Scale Cyclic Simple Shear Device written by MI. Amer and published by . This book was released on 1986 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cyclic simple shear testing is considered to be one of the most appropriate ways of reproducing in the laboratory the stresses that would be experienced by an element of soil in level ground subjected to earthquake loading. In the last few years cyclic simple shear testing has been analyzed experimentally and theoretically, and the advantages and limitations of the test presented. The main drawback concerns the lack of complementary shear stresses on the specimen vertical boundary and thereby a selection of the proper specimen size, that is, proper diameter versus height ratio must be carefully considered. The nonuniformity of the strain and stresses in the specimen most likely increases as the specimen diameter versus height ratio decreases. To investigate the specimen size effect on the primary dynamic (cyclic) soil properties, namely, the shear modulus and damping, a large-scale simple shear apparatus was constructed. In it, specimens having diameters from 7.6 to 30.5 cm (3 to 12 in.) and heights from 0.64 to 10.2 cm (1⁄4 to 4 in.) could be tested. Thus a wide range of diameter to height ratios could be obtained. The new testing device, its control system, and the method of preparation and installation of the soil specimens for such a large-scale device are presented and discussed. In addition, a cyclic testing program was conducted on sand and some examples of the data obtained are presented as well.
Download or read book Large scale Cyclic Simple Shear Test Apparatus written by Bryan K. Rogers and published by . This book was released on 1997 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Simple Approach to Performing Large Strain Cyclic Simple Shear Tests Methodology and Experimental Results written by Waqas Muhammad and published by . This book was released on 2018 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simple and efficient methodology has been proposed for characterizing the large strain cyclic simple shear behavior of engineering materials. The proposed methodology includes the use of a modified test specimen coupled with a digital image correlation system to measure the evolution of shear strains during cyclic simple shear deformation. The effectiveness and simplicity of the proposed testing procedure for cyclic simple shear testing lie in the fact that it does not require any custom test apparatus or fixtures to conduct cyclic simple shear tests. The proposed test sample for cyclic simple shear testing makes use of conventional tensile machine with standard grips to conduct the tests. Furthermore, the coupling of the digital image correlation system allows for full-field surface strain mapping, enabling measurement of shear strain evolution throughout the cyclic shear deformation, avoiding any complications associated with shear strain measurements using conventional extensometry techniques. The proposed methodology is successfully applied to characterize the large strain cyclic simple shear behavior of extruded aluminum alloy AA6063 in both T4 and T6 tempered conditions. The obtained cyclic simple shear results are further discussed in light of microstructure evolution during cyclic simple shear deformation.
Download or read book Soil Behavior Under Earthquake Loading Conditions written by Shannon & Wilson and published by . This book was released on 1972 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial Modelling and Failure Analysis of Natural and Engineering Disasters through Data based Methods Volume II written by Faming Huang and published by Frontiers Media SA. This book was released on 2023-08-01 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotechnical Hazards written by Z. Lisac and published by CRC Press. This book was released on 2020-12-17 with total page 907 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributions to this volume examine: geotechnical hazard acknowledging the deversity of local ground conditions and environmental factors which play a decisive role in designing engineering structures in Danubian countries.
Download or read book Physical Modelling in Geotechnics written by P. Guo and published by Taylor & Francis. This book was released on 2022-11-22 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers cover topics including: physical modelling facilities; experimental advances; seismic experimental advances; education; soil behaviour; offshore systems; cold regions; geo-environment; dynamics; earthquake effects; and strategies for disaster reduction.
Download or read book A New Cyclic Simple Shear Test Procedure with Multidirectional Loading written by Viet Hung Le and published by . This book was released on 2020 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This article presents a new procedure for cyclic simple shear tests with a change in the loading direction. For the experimental investigation of sand under drained condition, a conventional simple shear test device (unidirectional simple shear) was used. After modification of the specimen cell, the cell can rotate during the test, enabling the load direction to be changed. The construction of this modified version and its test procedure are explained in detail. This modification and test procedure can also be used for different simple shear devices of the same type. Furthermore, a test series involving Berlin sand was conducted with the direction of cyclic loading being changed once during each test. The test results indicate that a change in the cyclic direction has a significant influence on the accumulated deformation of sand.
Download or read book Journal of Geotechnical Engineering written by and published by . This book was released on 1987 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquefaction Around Marine Structures With Cd rom written by B Mutlu Sumer and published by World Scientific. This book was released on 2014-03-27 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, whose primary aim is to describe liquefaction processes and their implications for marine structures such as pipelines, sea outfalls, quay walls and caisson breakwaters, discusses the subject of soil liqeufaction in the marine environment.In addition, the physics of liquefaction (including examples illustrating the catastrophic consequences of soil liquefaction with regard to marine structures) are described, and the mathematical modelling of liqeufaction is treated in detail. Also, carefully selected numerical examples support the discussion of assessing liquefaction potential, and benchmark cases such as buried gas pipelines and their floatation, caisson breakwaters, cover stones and their interaction with liquefied soil along with counter measures are investigated.
Download or read book Comprehensive Seismic Zonation Schemes for Regions at Different Scales written by T. G. Sitharam and published by Springer. This book was released on 2018-06-30 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews and assesses the various methodologies for site characterization and site effect estimation to carry out seismic zonation at micro and macro levels. Readers will learn about the suitability of these methodologies for each level of zoning that needs to be assessed in order to optimize the resources for carrying out seismic zonation. The Indian sub-continent is highly vulnerable to earthquake hazards, and past studies have focused primarily on the Himalayan region (inter-plate zone) and the northeast region (subduction zone). The book improves understanding of the Peninsular India that also has significantly high seismicity and is prone to earthquakes of sizeable magnitude. Particular attention is given to the various methodologies for assessing seismic hazards, the scales at which site characterizations are carried out, and optimal methods for zonation practices using site data and hazard indexes. Aimed at students, this book will be of use to post-graduates and doctoral students researching seismic zonation, hazard assessment and mitigation, and spatial data in earth sciences.
Download or read book Practice of Discrete Element Method in Soil Structure Interface Modelling written by Wan-Huan Zhou and published by Springer Nature. This book was released on 2022-08-12 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is related to a parametric study of the soil–structural interface shearing behavior based on the numerical simulations of interface shear test with DEM, which is conducted from the role of soil properties, particle properties and structural properties. To aid readers in easily understanding the generation, implementation of models and controlling modes, for each part, the relevant code is provided in the text, and the whole source code of model is given in Appendix to share with readers for practice. The book is intended for graduate-level teaching and research in soil mechanics and geotechnical engineering, as well as in other related engineering specialties. This book is also of use to industry practitioners due to the inclusion of real-world applications, opening the door to advanced courses on modeling within the industrial engineering and operations research fields.
Download or read book Advances in Geotechnical Earthquake Engineering written by Abbas Moustafa and published by BoD – Books on Demand. This book was released on 2012-02-10 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book sheds lights on recent advances in Geotechnical Earthquake Engineering with special emphasis on soil liquefaction, soil-structure interaction, seismic safety of dams and underground monuments, mitigation strategies against landslide and fire whirlwind resulting from earthquakes and vibration of a layered rotating plant and Bryan's effect. The book contains sixteen chapters covering several interesting research topics written by researchers and experts from several countries. The research reported in this book is useful to graduate students and researchers working in the fields of structural and earthquake engineering. The book will also be of considerable help to civil engineers working on construction and repair of engineering structures, such as buildings, roads, dams and monuments.
Download or read book Automatic Static and Cyclic Shear Testing Machine Under Constant Normal Stiffness Boundary Conditions written by S. M. Mahdi Niktabar and published by . This book was released on 2018 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic loads, including earthquake, blasting, and vibration loads, induce cyclic shear loads along the joints in rock masses; hence, the risk of failure increases on the joints due to changing shear resistance. On the other hand, joints are under different boundary conditions: constant normal load (CNL) and constant normal stiffness (CNS). Normal stiffness increases on the joints with increasing depth, and it can affect shear resistance. For an accurate assessment of joint shear resistance under varying normal stiffness and number of cycles, advanced laboratory shear apparatus is essential for the shear test. Conventional direct shear apparatuses have limitations such as boundary conditions, working under monotonic (static) shear loads only, or cyclic shear loads with no change of frequency and amplitude of shear loads. Therefore, a new large-scale servo-controlled direct shear testing machine was developed to conduct cyclic shear test (as well as monotonic shear test) under CNL and CNS boundary conditions with varying normal stiffness at different frequencies and amplitudes of shear loads. In the present study, the cyclic shear tests were conducted on nonplanar joints under varying normal stiffness. Moreover, the effects of different frequencies and amplitudes of shear loads were investigated. The test results indicate that peak shear stress increases with increasing normal stiffness at the first cycle, but the influence of normal stiffness decreases with an increase in the number of shear cycles. The frequency of shear load influences peak shear stress, i.e., peak shear stress increases with increasing frequency. The number of cycles does not affect peak shear stress on the joints at low shear amplitude, but peak shear stress decreases with higher amplitude.
Download or read book Building Technology Publications written by and published by . This book was released on 1983 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 8th International Congress on Environmental Geotechnics Volume 2 written by Liangtong Zhan and published by Springer. This book was released on 2018-10-10 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the third volume of the proceedings of the 8th International Congress on Environmental Geotechnics (ICEG 2018), held on October 28 - November 1, 2018 in Hangzhou, China. The theme of the congress is “Towards a Sustainable Geoenvironment”, which means meeting the needs of the present generation without compromising the ability of future generations to meet their own needs. Under this theme, the congress covers a broad range of topics and provides an excellent opportunity for academics, engineers, scientists, government officials, regulators, and planners to present, discuss and exchange notes on the latest advances and developments in the research and application of environmental geotechnics.
Download or read book Developments in Geotechnical Engineering from Harvard to New Delhi 1936 1994 written by A.S. Balasubramaniam and published by CRC Press. This book was released on 2021-06-30 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the developments that have taken place in the field of geotechnical engineering since the first international conference on Soil Mechanics and Foundation Engineering was held in Harvard University in 1936 until the January 1994 conference in New Delhi, India.
