Methods for Evaluating the Characteristics of the Stress-Strain State of Seismic Blocks Under Operating Conditions

Bulat, A.F.; Dyrda, V. I.; Grebenyuk, S. N.; Agal’tsov, G. N.

doi:10.1007/s11223-019-00129-x

Cited by 6 publications

(6 citation statements)

References 1 publication

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“…The proposed method for calculating seismically isolated systems can be used to study any kinematic type systems, for example, on rubber blocks [6,14,15]. -When providing movement at the KF level of the order of up to 10-12 cm, the building should be recognized as seismic resistant at the median values of acceleration at the base of the "Map of seismic zoning of the Republic of Kazakhstan" for Almaty.…”

Section: Discussionmentioning

confidence: 99%

“…A fairly simple and effective means of reducing the risk of losses in case of possible earthquakes are seismic isolation systems of various types, which have been intensively developing over the past 30 years [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Several thousand seismically isolated objects have already been built in the world.…”

Section: Introductionmentioning

confidence: 99%

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Seismic isolated house reaction upon condition of the repeatability of earthquakes

Lapin¹,

Sharipov

Aldakhov³

2022

J Appl Eng Science

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To study the seismic properties of buildings in Almaty, a special test site operates. It includes buildings with conventional strip foundations with a system of cross belts and seismic support of 2 types. The landfill buildings were previously tested under static and dynamic influences. With the use of real accelerograms of earthquakes, a forecast of the behavior of a seismically isolated house on kinematic foundations under seismic influences has been carried out. The seismic impact is represented by a set of real accelerograms of strong, mainly Californian earthquakes. The hearts depths and magnitudes correspond to possible Almaty earthquakes. Two design schemes of a seismically isolated building are considered - single-mass and 10-mass dynamic building models. It is shown that the magnitudes of displacements in the kinematic foundations (KF) level obtained by two dynamic models usually differ within 5-10%. Therefore, the calculation of seismically isolated buildings can be applied to a single-mass non-linear dynamic model. A linear regression connection was obtained between the values of acceleration at the base and displacements at the level of the foundation. For the values of acceleration according to the new "Map of seismic zoning of the Republic of Kazakhstan" were obtained the predicted values of displacement at the level of the kinematic support of the order of 8.0-11.5 cm.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seismic isolated house reaction upon condition of the repeatability of earthquakes

Lapin¹,

Sharipov

Aldakhov³

2022

J Appl Eng Science

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“…The scientific foundations of the technology of active management of the state of the rock mass have been developed at IGTM NASU. An analytical description of the stress-strain state of the rock mass near the working excavation [4,5,[12][13][14][15][16][17][18], including taking into account: free gas in the rocks, water saturation and man-made cracks [7,[19][20][21], geological disturbances [7], extreme deformation of rocks [4,5], physicochemical destruction of coal [22] is worked out by scientists of the institute. A model, which has been verified by numerous experiments in mines, has been developed.…”

Section: Methodology Of Mathematical Modelingmentioning

confidence: 99%

New technical solutions in the field of protection and fastening of mine workings

Yalanskyi

Slashchov

Makeiev

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The article discusses the features of fastening preparatory workings in difficult geological conditions, which are studied in three directions: improving concrete, arch and anchor fasteners with the consideration of the initial physical and mechanical properties of the rock mass; introduction of steel-polymer anchor; improvement of cast strips designs in combination with arch and anchor fasteners for reuse. Protection methods of mine workings and means of fastening often do not correspond to the peculiarities of the manifestation of rock pressure at the end sections of lavas and in zones of tectonic disturbances, as a result of which can become the main cause of the unsatisfactory state of the mine workings. Mathematical modeling of the rock massif stress-strain state has been carried out by the finite element method. Rigid and pliable cast strips, various technologies for erecting a cast strip, as well as a combination of cast strips with anchor and arch fasteners are modeled. The locations and sizes of rocks destruction zones, stresses in the rock mass for different options of fastening have been determined. The drawbacks of the existing technologies for the construction of cast strips are revealed and the factors for increasing their technical efficiency are established.

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“…To eliminate these errors, a moment finite element scheme was proposed [4]. The effectiveness of its application for the calculation of vibration insulators is shown in the study of rubber [8] and rubber-metal [5] vibration insulators.…”

Section: Experimental Research and Calculation Of Seismic Vibration P...mentioning

confidence: 99%

Development and implementation of vibroseismic protection of buildings and structures from external dynamic loads

Bulat,

Lysytsia,

Lapin

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The article considers the results of vibration dynamic tests of the vibration acceleration levels of a vibration insulated reinforced concrete slab and floors of a residential building, which have confirmed the effectiveness of the seismic vibration isolation system using rubber elements. The registered levels of vibration accelerations in residential premises on different floors do not exceed permissible levels according to sanitary standards, which ensures comfortable living conditions in the presence of dynamic influences. To determine the actual vibration levels of the soil and piles vibration and dynamic studies were carried out. Based on the results of these studies, numerical calculations were carried out to determine the compliance of the predicted vibration levels in residential premises with the existing sanitary standards when they are exposed to real anthropogenic loads.

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Methods for Evaluating the Characteristics of the Stress-Strain State of Seismic Blocks Under Operating Conditions

Cited by 6 publications

References 1 publication

Seismic isolated house reaction upon condition of the repeatability of earthquakes

Seismic isolated house reaction upon condition of the repeatability of earthquakes

New technical solutions in the field of protection and fastening of mine workings

Development and implementation of vibroseismic protection of buildings and structures from external dynamic loads

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