Research center of construction Construction Engineering in Research Center of Construction Construction engineering in underground construction

Construction engineering in the field of foundations and underground structures

N. M. Gersevanov Research, Planning and Surveying, Technological Institute of Bases and Underground Structures (NIIOSP) as a part of the Research Center of Construction provides engineering services in underground contruction.

NIIOSP named after N. M. Gersevanov deals with the whole set of geotechnical issues, including surveying, research and development, design and construction of foundations and substructures for buildings of various purposes, including in complicated soil and natural and climatic conditions. NIIOSP was established in 1931 as the All-Soviet Union Institute of Complex Bases and Foundations (VIOS); in 1958, the Institute was approved as the head institute in construction industry in the area of foundation construction and underground construction, and it is still.

NIIOSP named after N. M. Gersevanov performs the following types of work in construction engineering:

DESIGN WORK

Design of:

Pit enclosing structures, including those of more than 15 m deep built using the state-of-the-art constructions, machines and innovative technologies.
Supporting frames of the underground parts of buildings of various purposes and substructures.
Foundation slabs of various configuration.
Combined pile raft foundations.
Shallow foundations on natural base.
Pile foundations.
Underpinning and subsoil strengthening.
Waterproofing of foundations and walls of buildings and structures.
Dewatering and drainage systems.
Curtain grouting.
Protective measures for buildings against various factors, including against excavation, dewatering, and vibration.
Environmental barriers for protection of soil bodies and waters against hazardous waste of industrial enterprises and agricultural complexes.
Optimization of design solutions of “zero cycles” of various facilities.

OPERATIONS AND SERVICES IN UNDERGROUND CONSTRUCTION

Design of industrial and civil underground and embedded structures, including development of regulations for special types of work for underground construction; calculations of bases, foundations and constructions of underground and embedded structures in 2D and 3D layout of any degree of complexity.

The following is carried out:

Nonlinear calculations of base deformation.
Calculations of pit enclosing structures.
Calculations of embedded foundation slabs and pile raft foundations.
Calculations of 3D substructures interacting with the base.
Mathematical modelling of the stress-strain state of soil body and changes thereof in the process of underground construction.
Forecast of underground construction impact on nearby buildings and structures.
Seepage calculations and forecast of changes in hydrogeological conditions due to the use of underground space.

OPERATIONS AND SERVICES IN HIGH-RISE CONSTRUCTION

Analysis of engineering and geological conditions and development of measures for soil transformation for transmission of heavier loads thereon.
Calculations and design of foundations for high-rise buildings.
Forecast of soil base settlement.
R&D monitoring of design and construction of high-rise buildings.
Monitoring of high-rise construction.

OPERATIONS AND SERVICES IN MODERNIZATION OF BUILDINGS AND STRUCTURES

Inspection of buildings with justification of the possibility of underground part arrangement during modernization, and with development of recommendations for base strengthening and underpinning.
Development of base strengthening and underpinning designs.
R&D monitoring of modernization operations.
Overall monitoring of territories and development in connection with facility modernization operations.

OPERATIONS AND SERVICES IN CULTURAL HERITAGE PRESERVATION

(historical, cultural and architectural monuments)

Diagnostics of supporting structures and foundation soils.
Long-time observation over the foundation settlement using high-accuracy geodetic methods in order to ensure the preservation of monuments.
Designs of base and foundation soil strengthening for settlement stabilization.
Surface structure strengthening.

OPERATIONS AND SERVICES IN CONSTRUCTION IN PERMAFROST SOILS

Study of physical and mechanical properties of frost soils.

Determination of long-term strength and heaving properties of soils, a degree of their salinity and aggressivity to concrete and metal.

Recommendations for values of strength and deformation characteristics, and a degree of soil heaving properties.

Development of engineering solutions.

Calculations, design and process regulations for foundation of buildings and structures.

Calculations of parameters of landslide retaining structures stabilizing solifluction slopes in the territories with permafrost soils.

Design of pile foundations of linear structures on solifluction slopes.

Calculations of the speeds of melting of permafrost and melting soil bodies, and slope and structure stability in the territories with such soils with various technogenic impacts.

Design of island (glacial and earthwork) structures in the Arctic shallow shelf area.

Delivery of information about strength and deformation characteristics of very coarse frost and melting soils of various regions determined in the field.

Design of bases and foundations of industrial and civil buildings and structures in the areas of permafrost soil spread.

OPERATIONS AND SERVICES IN DEVELOPMENT PROTECTION DURING NEW CONSTRUCTION

Development of recommendations for the content of a set of measures for protection of buildings and structures of the existing development in the zones of underground construction impact.
Calculations (forecast) of new construction impact on the surrounding development.
Development of designs for protection of buildings and structures, and process regulations for implementation thereof.
Operations on installation of safety screens using the “vertical geotechnical barrier” method.

INSPECTION OF BUILDINGS AND GEOTECHNICAL MONITORING IN UNDERGROUND DEVELOPMENT

Inspection of buildings determining the category of the technical condition thereof and possible additional settlements.
Detailed inspection of foundation bases and substructures of buildings and structures.
Forecast of building settlements in the area of construction impact.
Development and design of protective measures for buildings of the surrounding development.
Geotechnical monitoring of buildings.
Forecast of change in the hydrogeological regimen of underground waters.

ENGINEERING AND GEOLOGICAL SURVEY

Engineering and geological, geophysical and geoecological survey.
Laboratory studies of soil construction properties.
Expert opinions with regard to the programs, materials and reports on engineering and geological survey for construction.
Development of installations for soil stamp testing, attachments for static probing, etc.
Special field studies of soils (deep stamps, probing, pressuremeters, etc.)

CONTROL OF URBAN CONSTRUCTION

Participation on a contractual basis in work of the bodies exercising the powers in the area of control and supervision in urban construction.
Field supervision.
Engineering supervision.