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Articles 1 - 30 of 55
Full-Text Articles in Engineering
Results Of Model Tray Experiments Of A Sand Pressiometer And Methods For Determining The Deformation Characteristics Of Soils, Khasanov Askar, Nabiyeva Nigora
Results Of Model Tray Experiments Of A Sand Pressiometer And Methods For Determining The Deformation Characteristics Of Soils, Khasanov Askar, Nabiyeva Nigora
Problems of Architecture and Construction
In the paper discusses the results of experimental studies of the stress-strain state of the soil around the walls of the borehole under axisymmetric loading. Analytical expressions are given for determining the soil deformation modulus when tested with a sand pressiometer.
Hydrocyclic Affecting Of Flush Fluid On A Stope Back Of Drilling Fluid, Akilov J., Jabbarov М.
Hydrocyclic Affecting Of Flush Fluid On A Stope Back Of Drilling Fluid, Akilov J., Jabbarov М.
Problems of Architecture and Construction
In article influencing of cyclic affectings of flush fluid on a stressed state of rocks of a bottom-hole zone is esteemed at boring oil and gas wells. By numerical experiments it is demonstrated that picking up rational arguments of hydrocyclic affecting of flush fluid.
Lasers And Their Application In Heating Technology, Khalmanov A., Aymatov R., Omonkulov O., Khudaykulov A.
Lasers And Their Application In Heating Technology, Khalmanov A., Aymatov R., Omonkulov O., Khudaykulov A.
Problems of Architecture and Construction
Heat engineering is one of the common technical subjects that are important for heat engineering, such as heat generation by radiation, light transmission by optical lubricants, and the use of transmitted light energy. Currently, the laser is a powerful light-emitting diet and is based on the radiation generated by the electron transport of a layer of atomic energy.In article, a heat exchanger is considered in the high-temperature region and the laser radiation in heaters exceeds other heat exchange intensities.
On The Formation Of A Computational Model Of Flexible Gently Sloping Shells And Plates Under Repeated Elastoplastic Loading, Abdusattarov A., Abdukadirov F.
On The Formation Of A Computational Model Of Flexible Gently Sloping Shells And Plates Under Repeated Elastoplastic Loading, Abdusattarov A., Abdukadirov F.
Problems of Architecture and Construction
In this article is given the geometric and physical relations for flexible gentle shells, suggests two forms of communication between the deformation of the middle layer and displacements, respectively, the equilibrium equations and the conditions for compatibility of deformation are derived. For a special case, the implementation algorithm and the results of calculating rectangular plates are presented.
Mathematical Calculation On Durability Of Some Constructions In Building, Khusanov B., Fatkhullayev F.
Mathematical Calculation On Durability Of Some Constructions In Building, Khusanov B., Fatkhullayev F.
Problems of Architecture and Construction
In article problems on durability of building constructions are investigated. Using the empirical formula for weight of an arch, under the influence of force, and the extremum theory, critical value of gravity is defined. Further for a homogeneous core which one end is fixed by the hinge, and on the second end force, and depending on a building material and a kind of its form is inserted, there is the greatest value of durability.
Development Of Diagram Methods In Calculations Of Reinforced Concrete Structures, Sagatov Bakhodir, Tillayev Mirjalol
Development Of Diagram Methods In Calculations Of Reinforced Concrete Structures, Sagatov Bakhodir, Tillayev Mirjalol
Problems of Architecture and Construction
The paper gives short analysis of the practical use of strain diagrams in design of reinforced concrete structures. Basic principles to obtain experimental diagrams under simple static, regime and dynamic loading are given along with the conditions they have to meet. Further developments of the diagram methods of design are noted.
Statistical Analysis Of Thermal Conductivity Of A Mixture Of Foam Polyurethane With Thin Wooden Chips, Makhmudov M.
Statistical Analysis Of Thermal Conductivity Of A Mixture Of Foam Polyurethane With Thin Wooden Chips, Makhmudov M.
Problems of Architecture and Construction
The article presents the results of determining in laboratory conditions the coefficient of thermal conductivity of a mixture of polyurethane foam with wood chips and the results of their statistical processing. Based on the results obtained, the calculated values of the thermal conductivity coefficient of the investigated material are recommended, corresponding to operating conditions A and B.
Main Parameters Of Physical Properties Of Saline Soils Along Highways, Zafarov Olmos, Urushboyev Elbek
Main Parameters Of Physical Properties Of Saline Soils Along Highways, Zafarov Olmos, Urushboyev Elbek
Problems of Architecture and Construction
This article provides information about the basic parameters of physical properties of the saline soils in roadside of highways, the key and rational indicators which are determined by the experiments and by calculating respectively in the evaluation of soil physical states, the density of solid particles, the basic parameters of density and moisture of the soil in natural condition.
The Causal Relationships In The Management Process Of Cement Production, Alishev Sh., Ortikov Z.
The Causal Relationships In The Management Process Of Cement Production, Alishev Sh., Ortikov Z.
Problems of Architecture and Construction
In the article on the basis of cause-effect relationships in cement, which are both direct and reverse in nature, it is revealed that the compressive strength of concrete largely depends on the reactivity of the anhydrous compounds obtained during firing, the fineness of grinding, the amount of free lime and other oxides, as well as a great influence on the quality of cement has a fine grinding of raw materials. Results of calculation of standard deviations. The models are obtained on the basis of the results of chemical analysis and individual expressive data of physical and mechanical character, on the …
Numerical Solution Of The Equation Of Seismic Vibration Of Complex Nodes Of Underground Structures In Earthquakes, U. Khalbutayev
Numerical Solution Of The Equation Of Seismic Vibration Of Complex Nodes Of Underground Structures In Earthquakes, U. Khalbutayev
Problems of Architecture and Construction
In this article, we study the numerical solution of the equations of motion of seismic-dynamic problems of complex knots of underground structures containing the Duhamel integral using the trapezoid and Simpson methods. To obtain numerical results, single seismic pulses and tabulated accelerogram values of the devastating Gazli earthquake are used. Investigation of the voltage and displacement, side pipes relative to the ground in the vicinity of complex nodes. Important conclusions have been made regarding the seismic resistance of complex assemblies and side pipes during earthquakes.
Strength Of Reinforced Concrete Beams Hardenedwith High-Strength Polymers, N Asatov, U. Jurayev, B. Sagatov
Strength Of Reinforced Concrete Beams Hardenedwith High-Strength Polymers, N Asatov, U. Jurayev, B. Sagatov
Problems of Architecture and Construction
The article reflects the methodology, results and features of the studies conducted to assess the strength of rectangular reinforced concrete beams in transverse bending. The technique of using high-strength polymer composites to reinforce reinforced concrete elements is shown. The characteristics of the tested samples, testing methods, the effect of the main factors affecting the strength of the beams are also discussed.
Study Of Old Padjakent Sugd Zoroastrism Temples As An Object Of Researches, D. Kamalova, Kh. Khaldarova
Study Of Old Padjakent Sugd Zoroastrism Temples As An Object Of Researches, D. Kamalova, Kh. Khaldarova
Problems of Architecture and Construction
The article summarizes the experience of the archaeological findings of the ancient Penjikent. In Sogd, a special type of buildings was developed, influenced by the architectural traditions of Bactria-Tokharistan, which, in turn, are closely linked to the cultural heritage of Greece and the ancient Near East. This allows us to consider the history of Sogdian temples an integral part of the history of world architecture.
Reactions Of Underground Pipelines Under The Action Of Damped Harmonic And Impulsive Influences, D. Bekmirzayev, N. Nishonov, R. Kishanova, Sh. Turdikulov
Reactions Of Underground Pipelines Under The Action Of Damped Harmonic And Impulsive Influences, D. Bekmirzayev, N. Nishonov, R. Kishanova, Sh. Turdikulov
Problems of Architecture and Construction
The article investigates underground pipelines under the action of damped harmonic and impulsive effects. The stress-strain state of underground pipelines and the propagation of seismic waves in underground pipelines are given.
Water Softening With Reverse Osmosis And Ultrafiltrations, O. Jurayev, D. Sobirova
Water Softening With Reverse Osmosis And Ultrafiltrations, O. Jurayev, D. Sobirova
Problems of Architecture and Construction
The study covered the analysis of the elimination of hardness to natural water and its adverse effects on humans and equipment. Especially the northern areas of the Samarkand, Bukhara and Navai regions of the Republic of Uzbekistan, the problems of groundwater hardness, their softening, the use of reverse osmosis and ultrafiltration, which are the newest physic-chemical methods, and the use of dynamic membranes to improve the performance of these problems.
Features Of National Standards For Calculation Of Seismic Resistance Of Buildings And Structures, A. Klebleyev, E. Klebleyev
Features Of National Standards For Calculation Of Seismic Resistance Of Buildings And Structures, A. Klebleyev, E. Klebleyev
Problems of Architecture and Construction
The article depicts the basic calculation formulas for determining the horizontal component of the seismic impact of domestic and foreign standards in the construction of seismic areas. Accumulated in the process of deformation of compressed rock massifs, the potential energy in places where the internal forces exceed the frictional forces passes into the kinetic force, which leads to an earthquake.
The Role Of Technical Customer-Engineering Company In The Implementation Of Construction Projects, A. Lapidus, D. Topchiy
The Role Of Technical Customer-Engineering Company In The Implementation Of Construction Projects, A. Lapidus, D. Topchiy
Problems of Architecture and Construction
The conceptual functions of a technical customer are considered, the companies analogous to which outside the Russian Federation are engineering companies. The two most common schemes of technical customer participation in the construction of the facility are presented, ensuring the successful implementation of the project.
Automated Calculation Of Steel Truss With Overhead Cranes, Sh. Turakulova, G. Freedman
Automated Calculation Of Steel Truss With Overhead Cranes, Sh. Turakulova, G. Freedman
Problems of Architecture and Construction
The article discusses an example of calculating a steel construction farm with a span of 30 m using the LIRA 9.6 software package. The sequence of actions for entering the initial data, calculating the farm and analyzing the results of the calculation is displayed.
Strength Of Reinforced Concrete Elements Strengthened With Carbon Fiber External Reinforcement, B. Sagatov, N. Rakhmanov
Strength Of Reinforced Concrete Elements Strengthened With Carbon Fiber External Reinforcement, B. Sagatov, N. Rakhmanov
Problems of Architecture and Construction
The article presents the results of experimental studies of the mechanism of force transmission through cracks in reinforced concrete elements strengthened with external reinforcement from carbon-fiber materials. New results to assess the ultimate shear resistance and stiffness of sections of reinforced concrete elements with cracks are described.
Module Preganglionic Deformations And Measure Aging Creep Of Heterogeneous Materials, Kh. Turayev
Module Preganglionic Deformations And Measure Aging Creep Of Heterogeneous Materials, Kh. Turayev
Problems of Architecture and Construction
On the basis of numerous studies it can be asserted that the modulus of elastic deformation of aging heterogeneous materials rises with increasing t age, approaching the limiting value of the modules of deformation for inhomogeneous material of very old age. The analysis of experimental studies based on the study of aging materials in the most important cases of their loading shows that the creep measure under conditions of natural in homogeneity for any t is a continuous bounded nonnegative function of t for t>t.
Numerical Study Of Nonlinear Oscillations Of A Viscoelastic Plate With Concentrated Masses, R. Abdikarimov, D. Khojayev
Numerical Study Of Nonlinear Oscillations Of A Viscoelastic Plate With Concentrated Masses, R. Abdikarimov, D. Khojayev
Problems of Architecture and Construction
Nonlinear oscillations of a viscoelastic rectangular plate with concentrated masses are investigated under different boundary conditions. The solution of the integro-differential equation is obtained using the Bubnov-Galerkin method in combination with the numerical method. The influence of the viscoelastic properties of the material and concentrated masses on the process of oscillations of a plate is shown.
Energy Saving Issues In The Design Of Modern Social Buildings, U. Ablayeva, N. Normatova
Energy Saving Issues In The Design Of Modern Social Buildings, U. Ablayeva, N. Normatova
Problems of Architecture and Construction
Improving the energy efficiency of buildings in recent decades has become one of the main directions of development of the construction industry. It seems appropriate to focus on improving the heat-shielding properties of external walls and windows, as well as a reasonable limitation of infiltration of outside air. Energy saving is a complex task. The concept of an energy efficient home should include not only insulation of structures, but also specific engineering solutions for the ventilation and heating systems.
Determination Of Imposition In Profiled Steroids Working On Non-Cervical Compressio, T. Kasimov
Determination Of Imposition In Profiled Steroids Working On Non-Cervical Compressio, T. Kasimov
Problems of Architecture and Construction
This article provides the solutions to general and local priorities of profiled rods that work for off-center compression. Rods with an open curved profile are effective in general and local priority compared to hot-rolled bars. In the article the author indicated that when cross-sectioned sheets are bent in various shapes, shear stresses are created at the transverse sections when the nonlinear longitudinal force is applied.
Thermo-Physical Calculation Og Buildings On The Basis Of Energy Saving Requirements And The Second Level Of Thermal Protection, B. Aytmuratov
Thermo-Physical Calculation Og Buildings On The Basis Of Energy Saving Requirements And The Second Level Of Thermal Protection, B. Aytmuratov
Problems of Architecture and Construction
One of the ways to increase the energy efficiency of buildings is to increase the resistance of the outer constructions to heat transfer. Therefore, in this article, the second level of thermal protection for the energy efficiency of buildings was examined according to requirments of NRC 2.01.04-97 * and analyzed for Nukus city.
Water Flow To The Earth Ground Soil Of Automobile Roads From Atmospheric Sediments, A. Kayumov, O. Zafarov, D. Kayumov
Water Flow To The Earth Ground Soil Of Automobile Roads From Atmospheric Sediments, A. Kayumov, O. Zafarov, D. Kayumov
Problems of Architecture and Construction
To predict the density, moisture and heaving of soils that they will have during the operation of roads, it is necessary to determine the flow of water into the soil from precipitation falling on the surface of the carriageway and roadsides in the autumn period of moisture accumulation grounds. Therefore, this article provides a method for determining the flow of water into the soil of the road bed from precipitation.
Development Of Software On Water Use, A. Kenjabayev, A. Sultanov
Development Of Software On Water Use, A. Kenjabayev, A. Sultanov
Problems of Architecture and Construction
The article presents a new theoretical basis for the development of software for optimal decision-making on water use. The advantages of using software for effective water use are described, and a viable option for using the model for water use is depicted. It also demonstrates how the software can be used in files in this area.
Usage Of Strain Gauges In Construction, U. Sirojiddinov
Usage Of Strain Gauges In Construction, U. Sirojiddinov
Problems of Architecture and Construction
This article discusses the use of strain gauges in determining the magnitude of the voltage arising in building structures, as well as their use in the dosing and weighing processes of components of reinforced concrete products. The principles and methods of operation of certain types of strain gauges are described.
Technology To Improve The Durability Of Concrete In The Dry Hot Climate Of Uzbekistan, R. Khamrakulov, Kh. Karakulov, A. Jabbarov
Technology To Improve The Durability Of Concrete In The Dry Hot Climate Of Uzbekistan, R. Khamrakulov, Kh. Karakulov, A. Jabbarov
Problems of Architecture and Construction
The article is devoted to the technology of concrete production in the conditions of dry hot climate of Uzbekistan, the methods and tools of construction technology are used to study this problem. The article analyzes the characteristic features of construction technology, taking into account the influence of various local resources. According to the result of the study, relevant recommendations and proposals were prepared for the decision maker (DM).
Simmetric Vibrations Of Two-Layer Elastic Plates, Z. Khudayberdiyev, Sh. Isroilov, Kh. Akhatov
Simmetric Vibrations Of Two-Layer Elastic Plates, Z. Khudayberdiyev, Sh. Isroilov, Kh. Akhatov
Problems of Architecture and Construction
The article depicts the problem of generating vibration equations of the two-layer elastic plate with the equilibrium equations of the three-layer elastic plate. Due to the layout of the case, a system of two-layer elastic plate vibration equations has been obtained from the three-layer elastic plate vibration equations system. Then, the two-layer plate vibration equation system was removed and the graphs of the migration dashed layers were obtained and the corresponding conclusions were drawn.
Design Of The Rigels Of Frame Buildings Taking Into Account The Step-By-Step Loading, U. Khamrakulov, V. Usmanov
Design Of The Rigels Of Frame Buildings Taking Into Account The Step-By-Step Loading, U. Khamrakulov, V. Usmanov
Problems of Architecture and Construction
The article presents the efficiency of accounting for the two-stage operation of the bolt of frame buildings of prefabricated monolithic reinforced concrete. Examples of calculation are carried out that shown all the effectiveness of accounting for the two-stage operation of structures.
Module Preganglionic Deformations And Measure Aging Creep Of Heterogeneous Materials, Kh. Turayev
Module Preganglionic Deformations And Measure Aging Creep Of Heterogeneous Materials, Kh. Turayev
Problems of Architecture and Construction
On the basis of numerous studies it can be asserted that the modulus of elastic deformation of aging heterogeneous materials rises with increasing t age, approaching the limiting value of the modules of deformation for inhomogeneous material of very old age. The analysis of experimental studies based on the study of aging materials in the most important cases of their loading shows that the creep measure under conditions of natural in homogeneity for any t is a continuous bounded nonnegative function of t for t>t.