Experience in solving scientific and technical problems of construction in complex engineering-geological conditions of Ukraine

ce/papers ◽  
2018 ◽  
Vol 2 (2-3) ◽  
pp. 905-908
Author(s):  
Petro KRYVOSHEYEV ◽  
Yuriy SLYUSARENKO
Keyword(s):  
Technical Problems ◽  
Geological Conditions ◽  
Complex Engineering

Engineering-Geological Studies Of The Territory, Soils Of Foundation And Foundations Of The Architectural Monument Of The "Melnikov’s House" In Moscow

2019 ◽  
pp. 41-51
Keyword(s):  
Working Condition ◽  
Overlying Water ◽  
North East ◽  
The North ◽  
Geological Processes ◽  
Architectural Monument ◽  
Geological Conditions ◽  
Zone Of Influence ◽  
Complex Engineering ◽  
Building Engineering

On the basis of engineering and design surveys of the building, engineering-geological and geophysical studies of the soils of the territory conducted by the article authors, as well as with due regard for the results of studies conducted on this territory by other authors, the features of the foundations, soils of their foundation and engineering-geological conditions of the territory of the Melnikov House are established. It is shown that the Melnikov house is located under complex engineering-geological conditions on the territory of high geological risk, in the zone of influence of tectonic disturbance. To the North of the area there is a zone of intersection of the observed disturbance with a larger disturbance that can have an impact on geological processes. To the North-East of the site of the Melnikov House, a sharp immersion of the roof of carbon deposits was revealed. It promotes groundwater seepage into limestone of the carbonate strata from overlying water-bearing sands and activation of processes of suffusion removal and sinkhole phenomena of the soil. The surveyed area is assessed as potentially karst-hazardous and adjacent to it from the North-East territory as karst-dangerous. In this regard any construction on the adjacent territory can provoke activation of sinkhole phenomena on the surface. The foundations of the building are basically in working condition. Existing defects can be eliminated during repair. The foundation soils mainly have sufficient bearing capacity. Areas of the base with bulk soil can be reinforced. However, when developing a project for the reconstruction of the building and its territory, it should be taken into account that the design of the Melnikov House does not provide for its operation on the loads at the formation of sinkholes.

scholarly journals Determination of pressure in the near-ground space pile terminated and broadening of the surface

2018 ◽  
Vol 251 ◽  
pp. 04062
Author(s):  
Natalia Kupchikova
Keyword(s):  
Numerical Modeling ◽  
Circular Cross Section ◽  
Analytical Form ◽  
Soil Mass ◽  
Software Systems ◽  
Discrete Method ◽  
Building Foundation ◽  
Geological Conditions ◽  
Complex Engineering

The article deals with the problem of determining the stress state of a complex pile structure with end broadening in the form of a sphere in the soil mass in the analytical form by a discrete method. The calculation schemes for determining the stress tensor at the boundary of the pile of square and circular cross-section with expansions in the soil massif are shown. The elements of the polynomial are found by the discrete method in rectangular and spherical coordinates, which is a cumbersome complex mathematical apparatus for a modern design engineer. The stresses are determined. At present, as the analysis has shown, the solution of complex geotechnical problems of soil bases and foundations for different types of loads in numerical modeling is carried out using modern software. Numerical modeling and calculation with the help of specialized software systems allows to consider the system “building-foundation-ground foundation”, as dynamic, integrally developing. However, the interaction of the components of this system requires a theoretical justification of the resistance of foundations in the ground environment, especially in complex engineering-geological conditions.

Problems of Sub-Mountain Area Development Associated with Collapsing Loess Soils (Case of Tajikistan)

2014 ◽  
Vol 633-634 ◽  
pp. 927-931 ◽  
Author(s):  
Rustam Usmanov ◽  
Marina Rakočević ◽  
Vera Murgul ◽  
Nikolay Vatin
Keyword(s):  
Large Scale ◽  
Mountain Area ◽  
Central Asian ◽  
Geological Conditions ◽  
Development Experience ◽  
Rest Areas ◽  
Complex Engineering ◽  
Central Asian Countries ◽  
Mountain Development ◽  
Area Development

The major part of seismically active Central Asian countries is presented by large-scale sub-mountain upland areas with complex engineering and geological conditions and surface topography as a rule. Plains and flatlands (valleys) in Tajikistan and Kirgizstan account for 10%, and all the rest areas are presented by mountains. Lack of agricultural area is considered to be a pending problem and calls for urgent solution. One of the efficient ways to solve this problem is to develop sub-mountain (hilly) areas which can make it possible to increase level of agricultural production and expand areas for buildings construction. The article deals with sub-mountain development experience based on the case of Tajikistan which can be valuable for different regions.

Construction Technology Research Expressway Soft Long Pile Lakes

2014 ◽  
Vol 1065-1069 ◽  
pp. 687-690
Author(s):  
Mei Yan He
Keyword(s):  
Pile Foundation ◽  
High Speed ◽  
Soft Clay ◽  
Construction Technology ◽  
Construction Process ◽  
Technology Research ◽  
Technical Problems ◽  
Foundation Construction ◽  
Bored Pile ◽  
Geological Conditions

Currently, bored pile been widely applied in the current road and bridge construction, But its construction technology in complex geological case is still not perfect. In view of this, this paper carried out a high-speed Lakes viaduct extraordinary pile foundation construction project. For the analysis of the technical difficulties in the construction process, explore get the corresponding key construction technology, and it relates to the accident and its approach are summarized, study drew long pile construction technology Lakes geological conditions under soft silt and clay, solve the long holes bored pile into the lake silt soft clay under geological conditions, verticality control and other technical problems, can provide reference for similar projects.

Study on Surrounding Rock Deformation Characteristics and Control Technology in Deep Soft Rock Roadway

2012 ◽  
Vol 594-597 ◽  
pp. 631-635 ◽  
Author(s):  
Wen Hua Zha ◽  
Xin Zhu Hua
Keyword(s):  
Soft Rock ◽  
Surrounding Rock ◽  
Control Technology ◽  
Deformation Characteristics ◽  
Control Effect ◽  
Tunnel Support ◽  
Technical Problems ◽  
Geological Conditions ◽  
Soft Rock Roadway ◽  
Rock Roadway

To explore support technical problems in deep soft rock roadway, according to deep complicated geological conditions in 102 transport rise of Yuandian Mine, obtaining deformation characteristics of roadway in the initial support scheme under conditions, analysing the reasons of instability and failure of surrounding rock, proposing the surrounding rock control technology of step-by-step strengthen co-supporting, determining secondary anchor cable strengthen support time and grouting delay distance, optimizing the parameters of roadway support. Industrial practice show that the control effect of deformation was obvious,which provide the reference for deep soft rock tunnel support decision.

scholarly journals EXPERIENCE OF CONSTRUCTION OF THE PLATE AND PILE FOUNDATION IN COMPLEX ENGINEERING AND GEOLOGICAL CONDITIONS

2021 ◽  
pp. 78-84
Author(s):  
V. D. PETRENKO ◽  
V. I. KRYSAN ◽  
V. V. KRYSAN ◽  
I. S. CHEHODAIEV
Keyword(s):  
New Technologies ◽  
Residential Buildings ◽  
Residential Building ◽  
Construction Technology ◽  
Large Area ◽  
Soil Cement ◽  
Geological Conditions ◽  
Deformed State ◽  
Complex Engineering ◽  
Slab Foundation

Purpose. An urgent issue for the construction of foundations in complex engineering and geological conditions is the development of new technologies for the construction and monitoring of buildings built in deep beams. The purpose of this article is to development a technology for eliminating cavities with the help of vertical rigid soil-cement elements. Methodology. Using the experience gained in designing foundations in complex engineering and geological conditions, it was proposed to implement a new type of pile-slab foundation. It includes reinforced vertical hanging piles based on drilling and mixing technology and a slab foundation. An algorithm for monitoring houses built in deep gorges and pile-slab foundations using a system of wells and marks is also proposed. Findings. Scientific substantiation of construction technology in Solomianskyi District of Kyiv has been performed, where there are areas that, given the variable height and saturation of various wastes, are very difficult to use for construction, especially in the construction of houses with large area and height within 9 … 16 floors. The results of construction of a ten-storey frame-type residential building with an underground length of 102.5 m and a width of 14.0 m are presented. Originality. Based on the performed calculations, the dependences of the deformed state of the pile-slab foundations during the construction of high-rise residential buildings are obtained. It is proved that when applying the technology of creating vertical hanging piles, the values of maximum allowable deformations of the house and the foundation meet the requirements of current regulations of Ukraine. Practical value. The use of pile-slab foundation in complex engineering and geological conditions made it possible to develop the technology of construction of a ten-storey building.

scholarly journals Hydrogeological processes and phenomena and assessment of their danger

2021 ◽  
Vol 937 (3) ◽  
pp. 032018
Author(s):  
D Moiseev ◽  
L Gorina ◽  
V Romanovsky ◽  
K Valeeva ◽  
O Gorbunova
Keyword(s):  
Physical State ◽  
Negative Impact ◽  
Climatic Factors ◽  
Structural Parameters ◽  
Natural Processes ◽  
Geological Conditions ◽  
Complex Engineering ◽  
Hazard Level ◽  
The Stability ◽  
Negative Factors

Abstract In modern complex engineering-geological conditions of cities, the growth and scale of development of dangerous natural processes and phenomena can be traced. In many ways, the reasons for this are not only technogenic load on the soil, but also changes in climatic factors. Buildings and objects exposed to hazardous factors of hydrogeological processes are becoming increasingly vulnerable to their impact, which can lead to catastrophic consequences. One of the main conditions for increasing the stability of objects is the adaptation of existing methods or approaches to assessing natural hazards that have a negative impact on the physical state of such objects. The authors of the article propose an adaptation of the international INFORM approach in order to assess the hazard level of natural processes and phenomena in built-up areas. The task is also to develop a methodology for assessing the physical state of objects exposed to such processes and phenomena. To solve this problem, the study examines the practical aspects of applying the principles of the Weber-Fechner law in determining the state of the structural parameters of buildings that are under the influence of negative factors of hazardous natural processes and phenomena. The study is based on the principle of changing the category of the physical state of objects from changes in the level of exposure to hazardous factors of natural processes and phenomena.

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