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APPLICATION OF RIT PILES IN FOUNDATIONS OF HIGH-RISE BUILDINGS

Вестник МГСУ 4/2012
  • Kubetskiy Valeriy Leonidovich - Scientific Research Institute of Moscow Construction (NII Mosstroi) Professor, Doctor of Technical Sciences, +7 (499) 739-30-43, Scientific Research Institute of Moscow Construction (NII Mosstroi), 8 Vinnitskaya St., Moscow, 119192, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Eremin Valeriy Ivanovich - PSP RITA Candidate of Technical Sciences, Director of Technology, PSP RITA, Building 1, 8 Vereyskaya St., Moscow, 121357, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 240 - 245

The authors provide an overview of multiple cases of application of piles, made through the use of electric discharges, as the foundations of high-rise buildings. The values of the bearing capacity of RIT piles identified on the basis of static field tests of specific construction facilities are provided. Nine RIT pile buildings, the height of which varied from 90 to 140 meters, were built before 2012.
The total number of high-rise buildings that rest on RIT piles is equal to nine. They are made of fine concrete prepared according to State Standard 26633-91*, B30 class of compression strength, and W10 grade of water permeability. The reinforcement of RIT piles was performed through the application of the reinforcing cage composed of two sections. A500C steel was used for longitudinal (bearing) rods, the design compressive strength was equal to 435 MPa; dimensions of the bearing steel were based on the principle of perception of the whole design load. The concrete transmitted the load into the soil and protected the steel from corrosion.
On the basis of the analysis of the monitoring results, the technology and tests of PIT piles, a conclusion can be made that PIT piles, that have a diameter of 320 mm, assure the pre-set reliability of high-rise buildings in complex engineering and geological environments.

DOI: 10.22227/1997-0935.2012.4.240 - 245

Библиографический список
  1. Yassievich G.N. Issledovanie sposoba izgotovleniya buronabivnykh svay s pomoshch'yu elektrogidravlicheskogo effekta i ikh raboty pod vertikal'noy nagruzkoy [Research of the Method of Manufacturing of Bored Piles through the Employment of the Electrohydraulic Effect and Their Behavior under Vertical Loads]. Leningrad, LISI [Leningrad Institute of Civil Engineering], 1977, 223 p.
  2. Gavrilov G.N., Egorov A.L., Korovin S.K. Elektrogidroimpul'snaya tekhnologiya v gornom dele I stroitel'stve [Technology of Electric Hydraulic Impulses in Mining and Civil Engineering]. Moscow, Nedra Publ., 1991, 128 p.
  3. TR 50-180—06. Tekhnicheskie rekomendatsii po proektirovaniyu i ustroystvu svaynykh fundamentov, vypolnyaemykh s ispol'zovaniem razryadno-impul'snoy tekhnologii dlya zdaniy povyshennoy etazhnosti (svai-RIT) [TR 50-18-06. Technical Recommendations Regarding Design Development and Construction of Pile Foundations Made through the Application of the Electric Discharge Technology to High-Rise Buildings (RIT Piles)]. Moscow, VEK Publ., 2006, 68 p.
  4. Kattsenbakh R., Shmit A., Ramm Kh. Rekonstruktsiya gorodov i geotekhnicheskoe stroitel'stvo [Urban Restructuring and Geotechnical Construction]. 2005, no. 9, pp. 80—99.

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INFLUENCE OF PIT WALL ANCHORAGE ONTO ADDITIONAL DEFORMATIONS OF EXISTING BUILDINGS

Вестник МГСУ 4/2012
  • Kubetskiy Valeriy Leonidovich - Scientific Research Institute of Moscow Construction (NII Mosstroi) Professor, Doctor of Technical Sciences, +7 (499) 739-30-43, Scientific Research Institute of Moscow Construction (NII Mosstroi), 8 Vinnitskaya St., Moscow, 119192, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Kaleev Denis Ivanovich - Scientific Research Institute of Moscow Construction (NII Mosstroi) engineer, Scientific Research Institute of Moscow Construction (NII Mosstroi), 8 Vinnitskaya St., Moscow, 119192, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 246 - 251

Anchored pit walls contribute to substantial improvement of the technological effectiveness of subterranean sections of buildings and to considerable reduction of their cost.
The issue of influence of anchorages onto supplementary deformations of adjacent buildings is to be resolved in the course of designing of deep anchored pits. In some cases, anchors can be installed immediately underneath the existing buildings.
Assessment of additional projected deformations of buildings located in close proximity to pits is exemplified by the specific structure of the pit support system that has active PIT [1] anchors. The authors also consider the influence produced by the structure of anchors onto the two buildings located within the area of influence of the excavation works and protected by the anchors installed underneath the foundations of the two adjacent buildings.

DOI: 10.22227/1997-0935.2012.4.246 - 251

Библиографический список
  1. TR 50-180—06. Tekhnicheskie rekomendatsii po proektirovaniyu i ustroystvu svaynykh fundamentov, vypolnyaemykh s ispol'zovaniem razryadno-impul'snoy tekhnologii dlya zdaniy povyshennoy etazhnosti (svai-RIT) [TR 50-18-06. Technical Recommendations Regarding Design Development and Construction of Pile Foundations Made through the Application of the Electric Discharge Technology to High-Rise Buildings (RIT Piles)]. Moscow, VEK Publ., 2006, 68 p.
  2. Plaxis Software Version 8. Spravochnoe rukovodstvo [Reference Manual]. Moscow, 2006.
  3. GUP «NIIMosstroy». Zaklyuchenie po rezul'tatam geotekhnicheskoy ekspertizy proektnykh resheniy po ustroystvu ograzhdeniya kotlovana stroyashchegosya zhilogo doma s podzemnoy avtostoyankoy po adresu: g. Moskva, VAO, Izmaylovo, kvartal 26, 10-ya Parkovaya ul., vl. 20. [State Unitary Enterprise Scientific Research Institute of Moscow Construction “Opinion Based on Geotechnical Examination of Design Solutions for the Shoring of the Pit of the Future Residential House and the Subterranean Parking Lot at: Block 26, Izmaylovo, 20 10th Parkovaya St., Moscow, Eastern Administrative District”. Moscow, 2006.
  4. NIIOSP im. N.M. Gersevanova. Filial FGUP NITs «Stroitel'stvo». Nauchno-tekhnicheskiy otchet. Dopolnitel'noe obsledovanie tekhnicheskogo sostoyaniya zhilogo doma № 44 po ul. Verkhnyaya Pervomayskaya v g. Moskve, popadayushchego v zonu vliyaniya stroitel'stva zhilogo doma s podzemnoy avtostoyankoy po adresu: 10-ya Parkovaya ul., vl. 20 [Scientific and Research Institute of Beddings and Subterranean Structures named after N.M. Gersevanov. Branch of Federal State Unitary Enterprise “Construction Research Center”. Technological Research Report. Supplementary examination of the technical condition of Residential House № 4, Verkhnyaya Pervomayskaya st., Moscow, located within the area of influence of a new construction site of a residential house and a subterranean parking lot]. Moscow, 2007.

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CASESTUDY OF STABILIZATION OF STRUCTURAL-UNSTABLE SOILSUSING GROUTING

Вестник МГСУ 8/2013
  • Golovanov Aleksandr Mikhailovich - Rostov Research and Development Institute for Industrial Engineering Candidate of Technical Sciences, Honoured Inventor of the Russian Soviet Federal Socialist Republic, Director, Department of Foundation Soils and Foundations, Rostov Research and Development Institute for Industrial Engineering, 2/2 pr. Voroshilovskiy, Rostov-on-Don, 344006, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Pashkov Valeriy Ivanovich - Geotekhnika Group of Companies Candidate of Technical Sciences, Director, Geotekhnika Group of Companies, Building 55, 51/a Vostochnaya st., 344022, Rostov-on-Don, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Revo Galina Algirdasovna - Geotekhnika Group of Companies Executive Director, Geotekhnika Group of Companies, Building 55, 51/a Vostochnaya st., 344022, Rostov-on-Don, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Pashkov Deputy Director - Geotekhnika Group of Companies , Geotekhnika Group of Companies, Building 55, 51/a Vostochnaya st., 344022, Rostov-on-Don, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Nerchinskiy Oleg Vladimirovich - Geotekhnika Group of Companies Leading Engineer, Geotekhnika Group of Companies, Building 55, 51/a Vostochnaya st., 344022, Rostov-on-Don, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Turenko Chief Engineer - Geotekhnika Group of Companies , Geotekhnika Group of Companies, Building 55, 51/a Vostochnaya st., 344022, Rostov-on-Don, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 59-67

More than 20 years ago, Rostov-based Promstroyniiproekt Institute (Research and Development Institute for Industrial Engineering), backed by Geotechnika group of companies and other organizations, commenced using cement grouting to stabilize soil as part of foundation soils of buildings. It has turned out that consolidation of water saturated by clay accelerates grouting and assures higher strength than the silicification method. The article describes a new method of grouting and a case study of grouting stabilization of the foundation soil of a five-storey residential house, made by subsiding soils and subjacent fluid-plastic clay loams.The work was complicated by the fact that clay was displaced by the cement-sand mortar injected at the pressure insufficient for formation of discontinuous cavities. In these circumstances, the team of researchers developed and implemented an integrated solution to avoid clay clustering under the influence of the injected grout.The authors consider problems arising in the course of operation of buildings in the above geotechnical environment and describe the sequence of grouting operations. The article includes the work performance pattern and patterns of building control.

DOI: 10.22227/1997-0935.2013.8.59-67

Библиографический список
  1. Balkema A.A., Grouting and Deep Mixing. Proceedings of the Second International Conference on Ground Improvement Geosystems (Tokyo). Rotterdam, 1996, 795 p.
  2. Mitchell J.K., Katti R.K. Soil Improvement – State-of-the-Art (Preliminary). Proceedings of the 10th Conf. on Soil Mech. and Found. Stockholm, Engng, 1981, vol. 4, pp. 261—317.
  3. Wintercorn H.F., Pamukcu S., Fang H.-Y., editor. Soil Stabilization and Grouting. Foundation Engineering Handbook. Van Nostrend Reindhold, 1991, p. 317—378.
  4. Askalonov V. V Silikatizatsiya lessovykh gruntov [Silicification of Loessial Soils]. Moscow, Gosstroyizdat Publ., 1959.
  5. Golovanov A.M., Pashkov V.I., Revo G.A. Opyt zakrepleniya prosadochnykh i nasypnykh gruntov osnovaniy fundamentov zdaniy i sooruzheniy tsementatsiey [Case Study of Soil Silicification of Subsiding and Filled Foundation Soils of Buildings and Structures Using Grouting]. Sbornik nauchnykh trudov [Collection of Research Works]. Rostov-on-Don, OAO Institut “Rostovskiy PromStroyNiiProekt” Publ., 2004., pp. 68—71.
  6. Rzhanitsin B.A. Nekotorye itogi rabot v oblasti khimicheskogo zakrepleniya gruntov [Particular Findings of Works in the Field of Chemical Stabilization of Soils]. Zakreplenie i uplotnenie gruntov v stroitel'stve [Stabilization and Compaction of Soils in the Construction Industry]. Materialy VIII vsesoyuznogo soveshchaniya [Materials of the 8th All-Union Conference]. Kiev, 1974, pp. 109—111.
  7. Sokolovich V.E., Chalikova E.S., Veber I.B. Povyshenie effektivnosti silikatizatsii lessovykh gruntov [Improvement of Efficiency of Silicification of Loessial Soils]. Materialy V soveshchaniya po zakrepleniyu i uplotneniyu gruntov [Materials of the 5th Conference on Soil Stabilization and Compaction]. Novosibirsk, 1966, pp. 330—333.
  8. Sergeev V.I., Shimko T.G., Kuleshova M.L. Stepanova N.U. Razvitie in"ektsionnogo zakrepleniya kak odnogo iz osnovnykh metodov tekhnicheskoy melioratsii gruntov [Development of Injection Grouting as a Main Method of Engineering Amelioration of Soils]. Inzhenernaya geologiya [Engineering Geology]. 2012, no. 4, pp. 6—13.
  9. Golovanov A.M., Pashkov V.I., Sergeyev V.I. Sposob zakrepleniya grunta: patent na izobretenie ¹ 2103441 [Method of Soil Stabilization. Patent for Invention no. 2103441]. Application filed: June 07, 1998; published on January 27, 1998. Byulleten' izobreteniy i otkrytiy [Bulletin of Inventions and Discoveries]. 1998, no. 3.
  10. Isaev B.N., Badeev S.Yu., Tsapkova N.N. Sposob podgotovki osnovaniya: patent na izobretenie ¹ 2122068 [Method of Preparation of Foundation Soil. Patent for Invention no. 2122068]. Application filed: June 28, 1995; published on November 20, 1998. Byulleten' izobreteniy i otkrytiy [Bulletin of Inventions and Discoveries]. 1998, no. 32.

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OPERATING SAFETY OF FOUNDATIONS OF BUILDINGS AND STRUCTURES UNDER DYNAMIC IMPACT

Вестник МГСУ 5/2017 Том 12
  • Ter-Martirosyan Armen Zavenovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor of the Department of Soil Mechanics and Geotechnics, Head of Research and Education Center «Geotechnics», Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Sobolev Evgeniy Stanislavovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Senior Lecturer, Department of Soil Mechanics and Geotechnics, researcher at the Research and education center «Geotechnics», Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Страницы 537-544

Ensuring the safe operation of buildings and structures of increased responsibility in complex engineering and geological conditions requires a special approach to engineering surveys and construction. When designing ground bases, it is necessary to take into account the dynamic effects of man-made or natural origin. In this case, it is necessary to provide for a complex of special studies of the foundation soils. The results of the investigations make it possible to obtain the mechanical properties of soils necessary for subsequent calculations. As a rule, calculations are performed in modern software systems by numerical simulation of the "foundation-construction" system. Forecasting the stress-strain state of the soil base, taking into account special studies of soils and numerical modeling, allows to ensure strength and stability, as well as safe operation of the proposed structure during its entire service life.

DOI: 10.22227/1997-0935.2017.5.537-544

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