RESENT DEVELOPMENT OF BASE ISOLATION AND DAMPING
TECHNOLOGIES IN RUSSIA
Alexander BUBIS1, Lyubov SMIRNOVA2, Ivan Vedyakov 3
ABSTRACT
Last year’s there were a lot of dangerous earthquakes near Russian territory. China, Japan, Middle East territories, Italy, Greece, Turkey had many loses and damages. The risk of strong earthquake in Russia stay higher every year. The most effective technology of seismic protection is base isolation and energy dissipation. Russian specialists have new experience using effective types of antiseismic sets and devices. In the paper presented Results of development traditional and new type of sets, and tests of antiseismic devices and constructions.
First time in Russia starts project of skyscrapers with TMD system. High rise steel-concrete building with mechanical damping system was constructed in Khabarovsk region. Hydraulic dampers are used in Sochy, in Sirius school complex. Few seismic fixation stations were installed in base isolated buildings on Kamchatka region. As result of ground strong motions of regional earthquakes, first real accelerations for base isolated buildings in Russia were taken.
Keywords: base isolation; earthquake engineering; dampers; ground motions;
1. INTRODUCTION.
In previous paper was shown huge experience in seismic resistance technologies in Russia. This paper shows few nowadays project in seismic dangerous areas released by TSNIISK and Russian Association for earthquake engineering.
2. APPLICATION OF SEISMIC ISOLATION IN THE RECONSTRUCTION OF THE BUILDING OF THE "KOMMUNAR" CINEMA IN NOVOKUZNETSK-CITY
Last year were started reconstruction of the cinema "Kommunar" in Novokuznetsk-city (Figure 1). At level of the natural conditions of the survey site belongs to the complex. The survey site is characterized by heaving of soils, and seismicity. Listed engineering-geological conditions require the design to include measures for the protection of the Foundation from hazardous engineering-geological processes. According to the results of instrumental measurements of seismic intensity equal to 8 points.
The сinema building is divided into two seismology: projected three-story block is separated from the existing building of the theatre (single unit) earthquake-proof seam.
Building structural system – frame-wall with outer and inner longitudinal and transverse load-bearing walls and inner frame in the hall, wardrobe and box office lobbies.
To ensure seismic resistance design of buildings in this project recommended the installation of seismic isolation supports with high damping – elastomeric bearings supports with lead cores (Figure 2). The pod should have a high horizontal flexibility, allowing for large horizontal movement, without any damage.
1
Deputy head of EERC, TsNIISK named after V.A.Koucherenko, JSC Research Center of Construction, Moscow, Russia, [email protected]
2
Phd., Scientific secretary, JSC Research Center of Construction, Moscow, Russia, [email protected]
3
2
The pod will reduce the inertial seismic loads on the building by significantly increasing their own vibration period of the building and the increased damping of the system trade.
Figure 1. General view of the сinema "Kommunar" before reconstruction
The seismic isolation system must be provided with clearances (horizontal and vertical seams), which will allow isolated and non-isolated parts of the building are not in contact during a design earthquake.
Figure 2. General view of elastomeric bearings support with lead cores
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Figure 3. The Technology of seismic isolation device with a double arrangement of the supports under the wall
Figure 4. The Technology of seismic isolation device with a support under the wall
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Figure 6. The process of retrofitting of “Kommunar” building
3. THE HIGH-RISE MULTIFUNCTIONAL TRADE-HOTEL COMPLEX NAMED AFTER
AKHMAD KADIROV “AKHMAT TOWER” IN THE GROZNY CITY, CHECHEN.
In recent years, work is underway on the design of high-rise multifunctional complex with the height of 435 m "Grozny-city 2". The building symbolizes the Chechen medieval watchtower (Figure 7). The height of the building on the top of the dome is 400 meters, and with a spire reaches 435 meters.
The tower is 102 storeys. The complex includes a Museum, 100 apartments deluxe hotel with 500 rooms, panoramic restaurants, offices, high-rise helipads, fitness centers, swimming pools.
It will be the most difficult and the most high tech and construction in Russia. The building is designed in a seismic zone is 9 MSK degrees.
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Figure 8. High-rise multifunctional complex “Akhmat Tower”. Perspective view and section.
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The unique part of high-rise building is TMD system. It will be thirst application of TMD for
buildings (figure 9). The primary purpose of the TMD system is to enhance the comfort of the
tower’s occupants by reducing wind-induced sway accelerations of the tower. This is achieved by
reducing wind-induced displacements of the building. The TMDs provide this reduction by moving
out-of-phase with the wind-induced building motion at targeted frequencies near to the as-built
natural frequencies of the building (along the two perpendicular principal axes). As the TMDs
move, energy is extracted from the TMD system in the form of heat (and hence in turn from the
moving building) by means of energy dissipation devices incorporated into the TMD system (in this
case, Viscous Damping Devices, VDDs).
4.THE WOODEN COVERED STADIUM FOR BENDY IN IRKUTSK CITY, SIBERIA.
The stadium is starting for construction in present days in Irkutsk city. It has unique
construction, the only wooden covered building in seismic regions of Russia. The span of wooden
arch is 100 meters (figure 10). Seismicity of region of construction is 9 MSK degrees.
Figure 10. The section of wooden covered stadium in Irkutsk city
The same stadium was built in Krasnoyarsk city (figure 11), on the non-seismic area.
Figure 11. Views of wooden covered stadium in Krasnoyarsk city
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Figure 12. The connection joints of wooden cover of stadium in Krasnoyarsk city and full scale testing model
5. THE FIRST AUTOMATIC STATIONS IN BASE ISOLATED BUILDINGS FOR
RECORDING OF THE EARTHQUAKES ON THE FAR EAST OF RUSSIA.
On the summer of 2017 TSNIISK were installed four automatic stations in for different
regions of Russian Far East. On the ocean coast, on the distance about 500-600 km from each other
these stations fixing earth strong motions and movements of base isolated superstructures. This year
was fixe one earthquake M=6.0, and effect about 6 MSK degree. On figures 13-14 presented two
samples of base isolated buildings and station for earthquake fixations.
Figure 13. Base isolated building in Ust-Kamchatsk city, Kamchatka and station for earthquake fixation
8 6. CONCLUSIONS
1. Last years were very intensive for involved new technologies in the practice of constructions in Russia. Four years between European conferences gave us more than 15 new base isolated buildings or buildings with energy dissipative systems. Thirst times were used TMD system.
2. New codes for construction, producing and testing of base isolation and energy dissipation systems make possible projects with new technology on high scientific level.
3. Russia as pioneer in the base isolation theory and practice is in the mainstream of this direction in the world. The plans of technical renovation of
JSC Research Center of Construction will make possible
creation of new systems of base isolation.
7. REFERENCES
Zvezdov AI., Smirnova LN, Vedyakov II, Bubis AA (2017)Earthquake engineering of the Russian Federation as a priority direction of activity of JSC Research Center of Constructions. Earthquake engineering. Constructions safety, (6): 11-26.
GOST R 57353 – 2016 Structural bearings – Part 2: Sliding elements, M.: STANDARTINFORM, 2017 GOST R 57354 – 2016 Structural bearings – Part 3: Elastomeric bearings; M.: STANDARTINFORM, 2017 GOST R 57364 – 2016 Anti-seismic devises. Design rules, M.: STANDARTINFORM, 2017.
Bubis A, Smirnova L Development of Base isolation and Damping technologies in Russia Proceedings of the 16-th
