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A series of shaking table tests were conducted in this study to investigate the effects of the groundwater level on the seismic response of underground structures in coral sand. the dynamic responses, such as the pore water pressure, acceleration, soil pressure, strain and settlement are tested and analyzed for four different groundwater.
Here the investigation through shaking table test involving in the liquefaction characteristics of unfree ground and seismic response of single-pile-supported bridge structure is presented. the shaking table test, taking the destructive shengli bridge in 1976 tangshan earthquake as its prototype, was performed using the laminar.
However, earlier research shows that laboratory tests could also be conducted to study the liquefaction behavior of soil under specific condition. the present study mainly deals with an attempt made in conducting shake table test in laboratory by simulating.
It was observed that liquefaction induced by earthquake causes series damages to buildings and threatens the people and their properties. from the past studies, a number of countermeasures were proposed to reduce the build-up of excess pore water pressure and to enhance the stiffness of the soil during earthquake. the vertical drain systems are well known methods and used as remediation.
Jun 01, 2016 3. method of shaking model tests 3.1. model ground and similitude law. a 1-g shaking table and a rigid soil container were used in this research in which a model ground, l270 w40 d50 cm, was prepared using silica sand no. 7 (specific gravity gs=2.64, mean diameter d 50 =0.206 mm, uniformity coefficient c u =2.00, maximum void ratio e max =1.243, and minimum void ratio e min.
Liquefaction investigation on sea walls by shaking table tests ... fakher a. for submitting the research paper of “liquefaction investigation on sea walls by shaking table tests ... that this will be of great significance to all those who are willing to understand and know more about the impact of liquefaction on sea walls. more entries.
Mar 21, 2014 this paper presents the shaking table studies to investigate the factors that influence the liquefaction resistance of sand. a uniaxial shaking table with a perspex model container was used for the model tests, and saturated sand beds were prepared using wet pluviation method. the models were subjected to horizontal base shaking, and the variation of pore water pressure was.
May 27, 2018 in order to test the validity of sand’s reliquefaction behaviors, electromagnetic shaking table tests were carried out with different shaking durations. in each test, prepared sandy ground was shaken several times in succession till it wouldn’t reliquefy. before and after each shaking event, the density of sand was calculated by measured.
Shaking table research has provided valuable insight into liquefaction, post-earthquake settlement, foundation res ponse and lateral earth pressure problems. for the models used in shaking tables, soil can be placed, compacted and instrumented relatively easily. though higher gravitational stresses cannot be produced in a shaking table test,.
Shaking table tests were carried out to demonstrate the mechanism of the liquefaction-induced ground flow behind sea walls. two types of sea walls, a caisson type quay wall and a sheet pile type river revetment, which were damaged during the hyogoken-nambu and niigata earthquakes, were selected for the.
Test cone tip resistance and sleeve friction) and how the ground is likely to behave under different levels of earthquake shaking. this information can help in the design of foundations and ground improvements. in canterbury, cone penetration test results are commonly used to determine the liquefaction-triggering resistance of each soil.
The shaking table test modelling. the liquefaction initiation is defined on the basis of the number of cycles required to reach double amplitude (da) strain of 5 %. since this is a new type of sand, no previous results were available. the liquefaction curves of the skopje sand for.
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