KR102175189B1 - Jack-up system for concrete floor - Google Patents

Abstract

Buildings with improved vibration-proof performance and reliability through vibration isolation of vibration-proof rubber pads installed in the jack-up system as well as effectively absorbing vibration or noise generated between floors by forming an air layer between the existing slab layer and the floating floor using a jack-up mount. The floor jack-up system is initiated.

Description

Building floor jack-up system {JACK-UP SYSTEM FOR CONCRETE FLOOR}

The present invention relates to a building floor jack-up system, and more particularly, to a building floor jack-up system that can effectively prevent vibration or noise generated between floors of a building from being transmitted to the floor below the existing slab.

In general, buildings in urban areas are subject to external vibrations applied to vehicles or subway operations, vibrations and noises caused by shocks generated during residences, and vibrations generated by mechanical facilities such as air conditioners, fans, and pumps installed in buildings. It is transmitted indoors through the floor of each floor of the building, causing pollution such as noise and vibration, which is a factor that deteriorates the residential environment.

In particular, since April 2004, regulations on the noise generated between floors have become strict in accordance with the inter-floor noise regulation measures of buildings, and the noise between each floor of multi-story buildings must be reduced.

As shown in Fig. 1, a buffer panel 11 having a predetermined thickness made of rubber material on the front surface of the existing slab layer 10 in order to reduce noise and vibration generated in the floor or each floor of a building as described above. It is proposed to install and finish with a filling layer 12 and a plastering layer 13 on the upper part of the buffer panel.

However, in the prior art, the buffer panel 11 is condensed by the self-load of the filling layer 12 and the plaster layer 13 formed by pouring concrete, and in severe cases, the buffer panel 11 is damaged. As a result, there is a problem in that the impact sound or noise cannot be effectively absorbed.

Therefore, in recent years, a building floor jack-up system in which an air gap is formed to insulate vibration, shock, and noise between the existing slab and the floating floor of a building has been widely applied, and is called a floating floor system. have. The floating floor system can extend the life of the building by preventing or blocking the transmission of vibration, shock and noise to the surroundings, and it is being installed in various machine rooms and air conditioning rooms as it can create a quiet operation and a pleasant environment for mechanical devices. .

As an example of such a jack-up mount for a floating floor system, Korean Patent Laid-Open No. 10-2012-0127902 "Spring Jack-up Mount and a floating floor structure using the same" is composed of a hollow housing, a lower support plate, an upper support plate, and a coil spring. have. The housing is installed on the floating floor, and female threads are formed on the inner surface. The lower support plate is disposed on the foundation slab and is aligned with the housing at the bottom of the housing. The upper support plate consists of male threads that are fastened to female threads. The coil spring is mounted between the lower support plate and the upper support plate. With this configuration, vibrations, shocks, and noise transmitted from a mechanical device installed on the floating floor are attenuated by the buffering action of the coil spring.

However, the coil spring applied to the conventional technology has excellent vibration-proof performance due to its low natural frequency, and has excellent environmental performance such as temperature and moisture, but transient vibration, surging, and fluctuations generated during resonance There is a problem that (Rocking), etc. occurs. In particular, when the coil spring is subjected to a variable load close to the natural frequency, there is a problem in that the vibration isolating performance is low due to the surge that generates natural vibration in the high vibration region.

The present invention has been proposed to improve the above-described problems, and the object is to effectively absorb vibration or noise generated between the floors by forming an air layer between the existing slab layer and the floating floor using a jack-up mount, as well as a jack-up system It is to provide a building floor jack-up system with improved vibration-proof performance and reliability by vibration insulation of the vibration-proof rubber pad installed on the wall.

Its purpose is to provide a building floor jack-up system employing the advantage of a coil spring by forming an air cushion hole capable of buffering vibration, shock and noise in a vibration-proof rubber pad.

The above object is to provide a jack-up system for vibration-insulating the existing slab by supporting the floating floor so that an air layer is formed between the existing slab and the floating floor, and the cover is buried in the floating floor, but the bottom surface is open and the receiving space is formed therein. And, a boss part protruding upward from the center of the upper surface of the cover, communicating with the receiving space, and having a height adjustment screw hole formed on the inner surface, and a vertical reinforcing bar formed on the front and rear surfaces of the cover to reinforce the floating floor and fixed A jack-up housing consisting of a vertical reinforcing bar holder and a horizontal reinforcing bar holder formed on both sides of the boss portion to which a horizontal reinforcing bar is inserted and fixed to the floating floor; A jack bolt fastened to the height adjustment screw hole of the boss portion to lift the jack-up housing, a wrench groove formed on an upper surface, and an idle protrusion formed on a lower surface; It is accommodated in the receiving space of the cover and is placed on the existing slab, and the lower end of the jack bolt is supported to insulate the vibration of the floating floor, and an air cushion hole is formed to buffer vibration, shock and noise inside. Rubber pads; A support plate provided on the upper surface of the anti-vibration rubber pad and having a fitting hole rotatably supported by inserting the idling protrusion in the center is achieved by a building floor jack-up system including.

Here, the anti-vibration rubber pad includes a lower anti-vibration rubber pad formed in the left and right air cushion holes which are formed in the left and right directions and sequentially arranged in the front and rear direction, and the front and rear air cushion holes that are formed in the front and rear direction and are sequentially arranged in the left and right It is composed of an upper anti-vibration rubber pad formed in, and the left and right air cushion holes and the front and rear air cushion holes are preferably arranged alternately in cross-sections of a triangular shape and an inverted triangle shape.

In addition, the anti-vibration rubber pad includes 2.5% by weight of ammonium persulfate, 5.0% by weight of shungite powder having a particle size of 0.5 μm, 2.5% by weight of boric acid, 3.0% by weight of PEBAX (Polyether-block-amide), It is preferable to form a composition consisting of 4.0% by weight of a latex emulsion, 0.2% by weight of silicone oil, 4.5% by weight of polycarboxylic acid sodium salt, 2.5% by weight of morecurashix, 1.5% by weight of rosin, and the remainder of polychloroprene.

By forming an air layer between the existing slab layer and the floating floor using the jack-up mount according to the present invention, it effectively absorbs the vibration or noise generated between the floors, as well as the vibration-proof performance and vibration insulation of the vibration-proof rubber pad installed in the jack-up system. There is an effect that reliability is improved.

1 is a view showing a structure for reducing noise and vibration of a conventional building floor;
Figure 2 is an exploded perspective view of the building floor jack-up system according to the present invention,
Figure 3 is a partially cut-away perspective view of the building floor jack-up system according to the present invention,
4 and 5 is a cross-sectional view of a building floor jack-up system according to the present invention,
6 to 10 are views for explaining the construction of the building floor jack-up system according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 to 5, the building floor jack-up system 100 according to the present invention is a floating floor with respect to the existing slab 10 so that an air layer 30 is formed between the existing slab 10 and the floating floor 20. It is configured to insulate vibration, shock and noise by supporting (20).

The building floor jack-up system 100 according to the present invention includes a jack-up housing 200, a jack bolt 300, an anti-vibration rubber pad 400, and a support plate 500.

First, the jack-up housing 200 is buried in the floating floor and is arranged over the entire area of the floating floor, and includes a cover 210, a boss part 220, a vertical reinforcing bar holder 230, and a horizontal reinforcing bar holder 240. Is composed.

More specifically, the cover 210 is configured in a bell shape with an open bottom surface and an accommodation space 211 formed therein, so that when the concrete forming the floating floor 20 is poured, the inside of the floating floor 20 Is buried. Here, the cover 210 may be formed of plastic by injection molding or may be formed of metal by casting.

In addition, the boss part 220 is formed to protrude upward from the center of the upper surface of the cover 210, communicates with the receiving space 211, and has a height adjustment screw hole 221 formed on the inner surface thereof. Here, when the cover 210 is configured by plastic injection molding, the height adjustment screw hole 221 may be configured by insert molding, and when the cover 210 is configured by casting, the height adjustment screw hole ( The 221 may be formed by tapping the inner surface of the boss part 220.

And the vertical reinforcement holder 230 is formed on the front and rear of the cover 210, the vertical reinforcement 31 reinforcing the floating floor is inserted and fixed. That is, when concrete is poured in a state in which the vertical reinforcement 31 is inserted into the vertical reinforcement holder 230 and the cover 210 is interconnected using the vertical reinforcement 31, the cover 210 and the cover 210 are The concrete is hardened so as to be integrated with the vertical reinforcing bars 31 that are connected to form a solid floating floor 20.

And the horizontal reinforcement holder 240 is formed on both sides of the boss portion 220, the horizontal reinforcement 32 reinforcing the floating floor 20 is inserted and fixed. That is, when concrete is poured in a state in which the horizontal reinforcement 32 is inserted into the horizontal reinforcement holder 240 and the cover 210 is interconnected using the horizontal reinforcement 32, the cover 210 and the cover 210 are The concrete is hardened so as to be integrated with the connecting horizontal reinforcing bars 31 to form a solid floating floor 20.

Next, the jack bolt 300 is fastened to the height adjustment screw hole 221 of the boss part 220 to lift the jack-up housing 200. That is, the jack bolt 300 is fastened to the height adjustment screw hole 221 of the boss part 220 and lifts the jack-up housing 200 buried in the floating floor 20 so that the floating floor 20 is lifted as a whole. Is composed. Here, the jack bolt 300 has a wrench groove 310 into which a wrench for rotating the jack bolt is inserted on an upper surface, and an idle protrusion 320 is formed on the lower surface of the jack bolt 300.

Next, the anti-vibration rubber pad 400 is accommodated in the receiving space 211 of the cover 210 and disposed on the existing slab 10, and the lower end of the jack bolt 300 is supported so that the floating floor 20 It is configured to insulate vibration. Here, the anti-vibration rubber pad 400 uses polychloroprene, which is a polymer compound of chloroprene. The polychloroprene is a material having excellent durability, ozone resistance, heat resistance, and chemical resistance. The vibration-proof rubber pad 400 is made of a material having excellent vibration-proof performance in a high-frequency region, and effectively attenuates vibration, shock, and noise, and prevents excessive vibration, surge, and fluctuation, thereby increasing an insulation effect.

In particular, the anti-vibration rubber pad 400 has the disadvantage of shortening the fatigue limit in which elastic buffering force is lost due to deterioration and hardening due to heat generated during numerous repetitive contraction and expansion during installation and use, and elastic buffering action. In order to do so, 2.5% by weight of ammonium persulfate, 5.0% by weight of a shungite powder having a particle size of 0.5 μm, 2.5% by weight of boric acid, 3.0% by weight of PEBAX (Polyether-block-amide), and 4.0% by weight of a latex emulsion %, 0.2% by weight of silicone oil, 4.5% by weight of polycarboxylic acid sodium salt, 2.5% by weight of morecurashix, 1.5% by weight of rosin, and the remainder of the polychloroprene.

At this time, the ammonium persulfate is added to suppress thermal deformation by controlling the acidity to enhance oxidation resistance.

In addition, the sunzit is a natural mineral mainly containing silicate and fullerene, and is a powder of a mineral containing a large amount of fine graphite crystals.

These graphite microcrystals enhance heat resistance and reduce the coefficient of thermal expansion, thereby preventing the rubber component of the vibration-proof pad from deteriorating and a sudden decrease in fatigue strength caused by repeated flexing. In addition, when purezit containing more than 60% of fullerene is used, fullerene, the third allotrope of carbon, blocks the growth and activity of bacteria such as fungi by its natural antioxidant activity, thus preventing contamination and preventing longevity. Very effective to achieve.

In addition, the boric acid is a salt of oxygen acid having boron as a central atom, and because it maintains very little deformation even under load and pressure due to enhanced oxidation resistance by bonding with graphite microcrystals, it suppresses deterioration and prevents deterioration at high temperatures. There is little deformation and chemically also increases corrosion resistance and abrasion resistance.

In addition, the PEBAX (Polyether-block-amide) has a small change in hardness even at low temperatures, has excellent fatigue resistance, and has excellent molding processability due to its low specific gravity, and has low hygroscopicity, resistance to bending fatigue, weather resistance, flexibility, creep resistance, and adhesion. It is added to enhance sex.

In addition, the latex emulsion is added to increase the softening point, increase the elongation, and increase the viscosity at high temperature to enhance heat resistance and abrasion resistance.

In addition, the silicone oil is added in a small amount to eliminate the problem because the latex emulsion is blended in an emulsion state, which may cause a problem of molding defects due to bubble generation.

In addition, the polycarboxylic acid sodium salt is a liquid high-performance dispersant, has excellent color tone and viscosity stability, and is added in the present invention to prevent molding defects such as pinhole generation and wrinkles due to non-uniform dispersion during molding.

In addition, the Molecular Sieves have a strong hygroscopicity having an adsorption capacity close to the saturation adsorption amount under an extremely low partial pressure of water vapor, and sound insulation, sound absorption, and impact buffering by using the characteristics of a three-dimensional network pore crystal structure. It is added to strengthen.

In addition, the rosin is a pale yellow or brown transparent liquid that remains after removing turpentine by distilling rosin with water vapor. It adjusts the viscosity while enhancing the binding properties between components, increasing the dispersibility of latex emulsions, and binding during molding. It is added to increase power.

Finally, the polychloroprene is the base resin described above.

Deterioration resistance was tested for the sample of the vibration-proof rubber pad 400 thus formed. The test was conducted by applying a load of 5 kg to the sample, hitting the top of the sample with an impact bar rotating 15 revolutions per minute, and this process lasted for 2 months.

After 2 months, the deterioration on the surface of the sample, that is, whether hardening occurred, whether cracks occurred, and whether the elastic return force decreased was confirmed using a magnifying glass and a presser.

As a result of confirmation, hardening did not occur, the elastic return force was maintained in a normal state, there was no discoloration, and no cracks occurred.

Meanwhile, it is preferable that air cushion holes 411 and 421 are formed inside the vibration-proof rubber pad 400 to buffer vibration, shock, and noise. That is, the air cushion holes 411 and 421 expand and contract, compress, or expand according to vibrations and impacts delivered to the vibration-proof rubber pad 400 to insulate vibration. That is, the air cushion holes 411 and 421 function as a damper capable of buffering vibration, impact, and noise of the vibration-proof rubber pad 400, so that the advantages of the conventional coil spring can be adopted.

Further, the anti-vibration rubber pad 400 is formed in the left and right direction and the lower anti-vibration rubber pad 410 having left and right air cushion holes 411 arranged sequentially in the front and rear direction, and the lower anti-vibration rubber pad 410 formed in the front and rear direction, and are sequentially arranged in the left and right It is composed of an upper anti-vibration rubber pad 420 in which the front and rear air cushion holes 421 are formed.

In this way, when the vibration-proof rubber pad 400 is composed of two stages of the lower vibration-proof rubber pad 410 and the upper vibration-proof rubber pad 420, the vertical load is applied to the lower vibration-proof rubber pad 410 and the upper vibration-proof rubber pad 420. It is absorbed over two steps, and the horizontal load is absorbed in the left and right air cushion holes 411 of the lower anti-vibration rubber pad and the front and rear air cushion holes 421 of the upper anti-vibration rubber pad. That is, when receiving a vertical load, the lower vibration-proof rubber pad 410 and the lower vibration-proof rubber pad 420 are compressed up and down to absorb vibration. Subsequently, when a horizontal load is applied, the left and right air cushion holes 411 of the lower vibration-proof rubber pad and the front and rear air cushion holes 421 of the upper vibration-proof rubber pad are expanded, compressed, or expanded to absorb vibration. That is, since the left and right air cushion holes 411 are formed in the left and right directions in the lower vibration-proof rubber pad 410, the left and right air cushion holes 411 are before and after the lower vibration-proof rubber pad 410 when a horizontal load is received in the front and rear direction. As it is compressed in the direction, it absorbs the horizontal load generated in the front and rear directions. And, since the front and rear air cushion holes 421 are formed in the front and rear directions in the upper anti-vibration rubber pad 420, the front and rear air cushion holes 421 are left and right of the upper anti-vibration rubber pad 420 when a horizontal load is received. As it is compressed in the direction, it absorbs the horizontal load generated in the left and right directions. Therefore, when the vibration-proof rubber pad according to the present invention is composed of two stages of a lower vibration-proof rubber pad and an upper vibration-proof rubber pad, a certain dust-proof effect can be obtained.

Further, it is preferable that the left and right air cushion holes 411 and the front and rear air cushion holes 421 have a triangular cross section and an inverted triangular shape are alternately arranged. That is, when the lower vibration-proof rubber pad 410 and the upper vibration-proof rubber pad 420 are alternately arranged in a triangular shape and an inverted triangle shape, the left and right air cushion holes 411 and the front and rear air cushion holes 421, the lower vibration-proof rubber pad A honeycomb-shaped air cushion hole is formed in the 410 and the upper anti-vibration rubber pad 420, so that the cushioning effect against vibration, shock, and noise is greatly improved.

Finally, the support plate 500 is provided on the upper surface of the anti-vibration rubber pad 400, and the idling protrusion 320 is fitted in the center to form a fitting hole 510 that is rotatably supported. That is, when the support plate 500 is interposed between the jack bolt 300 and the anti-vibration rubber pad 400 to lift the jack-up housing 200 by the jack bolt 300, the anti-vibration rubber by the jack bolt 300 The pad 400 is prevented from being damaged and serves to support the lower end of the jack bolt 300 so that it can idle.

It will be described the construction and operating effects of the building floor jack-up system according to the present invention configured as described above.

As shown in Fig. 6, the insulation board 33 is installed on the wall before installing the jack-up housing. The insulation board 33 is made of expanded polystyrene foam, styrofoam, or the like. Expanded polystyrene foam is commonly called Iso Pink (brand name), and is widely used for floating floor systems. After the installation of the insulation board 33, the entire existing slab 10 is covered with a vinyl sheet 11, for example, two layers of polyethylene film with a release material of concrete. At this time, the seam of the vinyl sheet 11 is bonded by an OPP film.

And, as shown in FIG. 6, the jack-up housing 200 is installed on the vinyl sheet 11 laid on the existing slab 10. Here, one jack-up housing 200 is shown, but a plurality of jack-up housings 200 are installed at equal intervals corresponding to the floating floor area. At this time, the jack bolt 300 protrudes upward from the boss portion 220 of the jack-up housing 200, and the anti-vibration rubber pad 400 is accommodated in the receiving space 211 of the jack-up housing 100.

And, as shown in Fig. 8, a floating floor 20 is constructed so that the jack-up housing 200 is buried. The floating floor 20 is constructed as a reinforced concrete slab by combining the horizontal reinforcement 31 and the vertical reinforcement 32 to the vertical reinforcement holder 230 and the horizontal reinforcement holder 240 of the jack-up housing, and then pouring concrete. Therefore, when the curing of the concrete is completed, the jack-up housing 200 is connected by a horizontal reinforcement and a vertical reinforcement and is firmly buried in the floating floor 20. And the vinyl sheet 11 covered with the existing slab 10 prevents the concrete forming the floating floor 20 from sticking to the existing slab 20.

Then, as shown in FIG. 9, after the construction of the floating floor 20 is completed as described above, the jack bolt 300 is fastened to the boss part 220 using a wrench. The lower end of the jack bolt 300 is fitted and supported by the support plate 500, and the jack-up housing 200 is moved upward according to the fastening of the jack bolt 300, and the bottom 20 floating with the jack-up housing 200 It is lifted from the existing slab 10. Then, an air layer 40 is formed between the existing slab 10 and the floating floor 20.

And, as shown in FIG. 10, when the lifting of the floating floor 20 is completed, the sealant 34 is caulked on the insulation board 33, and the plastering 22 is finished on the floating floor, so that moisture etc. To prevent the penetration of foreign substances.

The building floor jack-up system according to the present invention constructed in this way blocks vibration, shock, and noise by the air layer formed between the existing slab and the floating floor, preventing the noise from the upper floor from being transmitted to the lower floor, thereby making inter-floor noise through the space. Alleviate. In addition, vibrations and shocks transmitted to the existing slab through floating floors, jack-up housings, and jack bolts are effectively attenuated by vibration insulation of vibration-proof rubber pads.

200: jack-up housing 300: jack bolt
400: anti-vibration rubber 500: support plate

Claims (3)

In the jack-up system that supports and insulates the floating floor against the existing slab so that an air layer is formed between the existing slab and the floating floor,
A cover buried in the floating floor with an open bottom surface and an accommodation space formed therein, a boss part protruding upward from the center of the upper surface of the cover, communicating with the accommodation space and having a height adjustment screw hole formed on the inner surface thereof, and A jack-up housing comprising a vertical reinforcement holder formed on the front and rear sides to which vertical reinforcement reinforcing the floating floor is inserted and fixed, and a horizontal reinforcement holder formed on both sides of the boss portion and fixed by inserting a horizontal reinforcement on the floating floor;
A jack bolt fastened to the height adjustment screw hole of the boss part to lift the jack-up housing, a wrench groove formed on an upper surface and an idle protrusion formed on a lower surface;
It is accommodated in the receiving space of the cover and is placed on the existing slab, and the lower end of the jack bolt is supported to insulate the vibration of the floating floor, and an air cushion hole is formed to buffer vibration, shock and noise inside. Rubber pads;
It is provided on the upper surface of the anti-vibration rubber pad, the idle projection is inserted in the center of the support plate is formed to be rotatably supported by the support plate; consisting of, including,
The anti-vibration rubber pad is formed in the left and right direction and has a lower anti-vibration rubber pad formed therein with left and right air cushion holes sequentially arranged in the front and rear direction, and front and rear air cushion holes formed in the front and rear direction and sequentially arranged in the left and right directions. It is composed of upper anti-vibration rubber pad,
The left and right air cushion holes and the front and rear air cushion holes have a triangular cross section and an inverted triangular shape are alternately arranged.
delete The method of claim 1,
The anti-vibration rubber pad includes 2.5% by weight of ammonium persulfate, 5.0% by weight of shungite powder having a particle size of 0.5 μm, 2.5% by weight of boric acid, 3.0% by weight of PEBAX (Polyether-block-amide), and latex emulsion A building floor, characterized in that it is formed of a composition consisting of 4.0% by weight, 0.2% by weight of silicone oil, 4.5% by weight of polycarboxylic acid sodium salt, 2.5% by weight of morecuraxix, 1.5% by weight of rosin, and the rest of polychloroprene Jack-up system.

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