Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userA study of the effect of (soil – structure) interaction on the dynamic response of elevated water tanks under seismic loads
دراسة تأثير الفعل المتبادل (تربة –منشأ) على الاستجابة الديناميكية لخزانات المياه العالية الخاضعة لأحمال زلزالية
1649
3 143
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
في هذا البحث قمنا بدراسة تأثير نموذج تربة التأسيس على قيم الإجهادات و الانتقالات لحالة خزان مياه عالي مليء. حيث تمت نمذجة الماء في الحلة بكتلتين وفقا للكود الأوروبي.
In this research, a study of full tank case is carried out. The water contained in the tank was modeled as two masses following the recommendations of Eurocode.
References used
ABAQUS 6.11.3.2011, Analysis User’s Manual
Haroun, M. A. and Ellaithy, M. H. (1985). Seismically Induced Fluid Forces on Elevated Tanks. Journal of Technical Topics in Civil Engineering, 111:1, 1-15
Resheidat, R. M. and Sunna, H. (1986). Behavior of elevated storage tanks during earthquakes, in Proceedings of the 3th U.S. National Conference on Earthquake Engineering,pp.2143-2154
rate research
Read More
It was found in this research that the seismic response of the
structure increases with the decrease in the shear waves velocity in
the soil, and the seismic response of the structure increases with
soil layer thickness between the foundations of the structure and
bedrock depth.
This research deals with the study of the behavior of piles under the influence of seismic loads through (3D) modeling using FE-Method-program (ABAQUS) with special reference to the most important parameters affecting the displacements and internal f
orces generated in piles. This study has been completed in two phases: the first phase is a case study of the single Pile (reference case), where a study of the behavior of a single pile assigning structure is modeled with a degree of freedom. The parametric study results show that the presence of structure causes the application of a large load in the upper part of the pile resulting from the impact of inertia dominating the kinetic effect. The forces of inertia increases with the increasing mass of structure, and when the frequency of structure nears the frequency of seismic load. The second phase deals with the study of the situation of the group of piles, where the study handles the effect of a number of piles, piles spacing, and locations on the internal force and displacements generated in the piles. The parametric study results have shown for this phase of this research that an increase the number of piles in the group causes a significant increase of internal forces generated at the top of the pile and a slight decrease for those forces in the central part of the pile, that seismic loads are not distributed equally for all piles, and that corner piles are subject to greater loads while mid. Piles are subject to less load.
This research includes analyzing and designing of high water
tanks using elastic method. Also, analyzing the structural
supporting system using the Second Equivalent Static Method, then
analysis by using Linear Dynamic Method - Response Spectra
M
ethod utilizing Sap2000 program and performing necessary
comparison.
In 2002, Zeyzoun Dam failure, that is an embankment dam located at the northwest of Syria, made a big Awareness of the effects of the lack of Geotechnical investigations and concern given to seismic design, geological conditions and location of the d
am. Zeyzoun dam location, in the vicinity of the Dead Sea fault system, emphasizes the importance of analyzing the effects of lithological stratum in dam foundations on dam seismic stability. This paper is concerned with the influence of a high permeable soil layer that has different static and dynamic properties, and exists at different depths in dam foundation. Geo-studio software, a Geotechnical program that applies the finite element method and can consider analysis like seepage, dynamic analysis and slope stability, used to build and analyse numerical models. The results of dynamic analysis showed rising of phreatic line level in dam body, amplification in dam dynamic response, increasing in pore-water and excess pore water pressure and decreasing in stability factors of safety, along with decreasing of the thin layer depth.
The phenomenon of impact between the adjacent buildings is one of the most important reasons for collapse of buildings during the
earthquakes for that most of the codes resort to avoid impact by
increasing the distance between adjacent buildings, b
ut on the other hand high cost of land requires us to take advantage of the largest possible area in addition to the difficulty of making the separation architecturally and in particularly for high buildings the separation may offer up to 50 cm.
We tried to have this research one of the studies that discuss the
subject of seismic pounding where we discussed the methods for
modeling the pounding and the most appropriate way to study the impact depending on the program dynamic analysis Ansys
(Autodyn Ver. 11) then chose several cases for study seismic
impact in three-dimensional models to cover most of the study
variables that may affect this phenomenon, and we doer non- linear dynamic analysis for all cases, with applying acceleration function is defined by equation its constants are changing with processing the seismic records data.
After finishing the analysis for all the models we have discussed
changing the transitions and stresses and strains , and studied the
factors affecting the impact , and discussed results of study and
then we have summarizes the recommendations in that we see fit
through this search.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
