Floating floor device used nearby rail transit

Abstract

The utility model discloses a floating floor device used nearby rail transit, and relates to the technical field of building construction, the floating floor device comprises a shock absorption layer, a sound insulation layer, a waterproof layer, a concrete layer, a waterproof coating layer, a sound insulation cushion layer, a fine aggregate concrete layer and a self-leveling layer which are sequentially arranged from bottom to top; the damping layer comprises a plurality of damping cushion blocks which are arranged at intervals; and the sound insulation cotton is filled among the damping cushion blocks. And by arranging the damping cushion blocks and the filling type sound insulation cotton, a damping space is formed between the building and the ground, the damping effect is greatly improved, and the sound insulation effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a floating floor device used near rail transit. Background Art

[0002] The high-frequency vibration of the subway during running will cause vibration in the buildings near the track. The vibration will be transmitted through the structure and will have a direct impact on the building. According to the "Standard for Limitation and Measurement Method of Vibration and Secondary Radiated Noise Caused by Urban Rail Transit" (JGJ / T170-2009), the vibration on both sides of the traffic trunk line should not exceed 75dB, and the vibration in residential and commercial areas should not exceed 70dB. Therefore, it is necessary to take certain vibration attenuation measures to control the subway vibration from being directly transmitted upward along the foundation of the museum lobby. In addition to the vibration isolation treatment of the museum lobby foundation, further vibration reduction treatment is also required for the relevant indoor floor slabs.

[0003] In addition, the activities of people in the museum will generate vibrations, and the equipment and pipes will also have low-frequency vibrations. These vibrations are transmitted to the surrounding rooms and other floors through the floor, which will cause vibration effects on the indoor exhibits. Since the existing building is directly cast in concrete, the seismic effect of low-frequency vibrations is poor, so it is necessary to reasonably control the structural vibrations in the building. Summary of the invention

[0004] The embodiments of the present specification provide a floating floor device for use near rail transit, which is used to solve the problem of unsatisfactory low-frequency shock absorption effect of building foundations near rail transit in the prior art.

[0005] The technical solutions provided by the embodiments of this specification are:

[0006] The embodiment of the present application provides a floating floor device for use near rail transit, including a shock-absorbing layer, a sound insulation layer, a waterproof layer, a concrete layer, a waterproof coating layer, a sound insulation cushion layer, a fine stone concrete layer and a self-leveling layer arranged in sequence from bottom to top;

[0007] The shock absorbing layer comprises:

[0008] A plurality of shock-absorbing pads, wherein the plurality of shock-absorbing pads are arranged at intervals;

[0009] Sound insulation cotton is filled between the plurality of shock-absorbing pads.

[0010] Furthermore, the shock-absorbing pad has a cubic structure.

[0011] Furthermore, the side of the shock-absorbing pad has a wavy structure.

[0012] Furthermore, a connecting block is provided on the bottom side of the shock-absorbing pad, and bolts are connected to the connecting block.

[0013] Furthermore, the shock-absorbing pad block adopts a polyurethane shock-absorbing pad.

[0014] Furthermore, the sound insulation cotton adopts a glass wool board with a density of not less than 64kg / m³.

[0015] Furthermore, the sound insulation layer adopts a composite sound insulation board.

[0016] Furthermore, the waterproof layer adopts a 0.2 mm thick polyethylene waterproof membrane.

[0017] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects: By providing shock-absorbing pads and filled sound insulation cotton, a shock-absorbing space is created between the building and the ground, which greatly improves the shock-absorbing effect and the sound insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure provided in the embodiments of this specification.

[0020] Figure 2 This is a schematic diagram of the top view of the shock-absorbing pad provided in the embodiment of this specification.

[0021] Figure 3 This is a schematic diagram of the front view structure of the shock-absorbing pad provided in the embodiment of this specification. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0023] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0024] This specification provides a floating floor device for use near rail transit. Figure 1As shown, it includes a shock-absorbing layer 1, a sound-insulating layer 2, a waterproof layer 3, a concrete layer 4, a waterproof coating layer 5, a sound-insulating cushion layer 6, a fine stone concrete layer 7 and a self-leveling layer 8 arranged in sequence from bottom to top; wherein, the shock-absorbing layer 1 includes a plurality of shock-absorbing pads 11, and the plurality of shock-absorbing pads are arranged at intervals; the shock-absorbing pads are polyurethane shock-absorbing pads. Sound-insulating cotton 12 is filled between the plurality of shock-absorbing pads 11, and the sound-insulating cotton is a glass wool board with a density of not less than 64kg / m³.

[0025] Construction methods include:

[0026] Material requirements

[0027] (1) Polyurethane vibration damping pad, corresponding to compressive stress load above 250KPa, supply specification is 1000x200mm.

[0028] (2) The adhesive material for the polyurethane vibration damping pad is a special adhesive for the polyurethane vibration damping pad. The special adhesive for the vibration damping pad is an environmentally friendly, high-strength single-component adhesive with zero VOC, excellent environmental performance, high thixotropy, high initial adhesion, fast curing, and good wear and weather resistance. Its ductility and vibration reduction performance after curing are close to those of elastic pads. Gaps below 3mm do not need to be filled with glue.

[0029] (3) PE film material is 0.2mm thick pure raw material thickened polyethylene protective film (high-quality plastic cloth), and the commonly used specification is 4m wide.

[0030] The installation scheme is as follows:

[0031] (1) Grassroots processing

[0032] 1) Handle the process handover. Before construction, the intermediate handover of the previous process should be carried out, and the cushion layer and waterproof layer can only be installed after confirming that they meet the design requirements.

[0033] 2) Base treatment: Before paving, check whether the cushion layer and waterproof layer are flat and intact. Clean the loose soil and debris on the surface of the base layer. Paving can only be carried out when the surface meets the paving conditions.

[0034] (2) Installation of vibration damping pad

[0035] Construction process: base surface preparation - measurement, layout - reference line marking - gluing of vibration damping pads - pasting of elastic vibration damping pads - laying of protective film - finishing and acceptance.

[0036] First, after the previous process is qualified, the wire is laid out according to different load areas.

[0037] Select the corresponding vibration-damping pads and install them according to the positioning lines. During the paving process, adopt the method of paving from one side to the other. Select polyurethane adhesive for strip-bonding method and use a rubber hammer to knock and compact it. After the second pad is installed in place, tighten the gap with the first pad and use clamps to temporarily fix it to prevent the pad from elastic sliding. Repeat this process for paving.

[0038] After paving is completed, check the edges and corners, and seal the gaps at the chamfered corners of the pad with glue.

[0039] The elastic pads are cut according to the angles at corners and internal and external corners, and polyurethane adhesive is used to perform joint treatment at gaps larger than 3mm.

[0040] After one area is paved, the adjacent area can be paved. After all vibration-damping pads are accepted, 0.2mm PE film is paved. The PE film is overlapped with staggered seams, and the overlap width is not less than 100mm. Adhesive tape is used to bond the joints to prevent mortar from entering the vibration isolation layer.

[0041] (3) Gluing operation

[0042] During the flat paving process, special adhesive for polyurethane vibration damping pads is used, and glue is applied vertically at intervals. On the entire board, glue is applied vertically in the short side direction with a vertical length of 200mm. The vertical glue spacing is not more than 200mm. Each pad is applied with 5 coats of glue, with a thickness of 10mm and a width of 20mm. The area of ​​glue application is not less than 10% of the total area of ​​the board.

[0043] It should be noted that the shock-absorbing pad is a cubic structure. The shock-absorbing pad is 150mm×150mm×50mm in size, with a paving spacing of 600mm and high-density sound insulation cotton filling in between. The preferred sound insulation cotton has a bulk density of 64kg, a thickness of 50mm, and a supply specification of 1200x50mm. The average fiber diameter is ≤5.0μm, the slag ball content is ≤4.0%, the heat load shrinkage temperature is ≥35℃, and it is not burnable. Select a rock wool board with a bulk density of not less than 100kg and a thickness of 50mm. The composite sound insulation board has a three-layer composite structure of 1220x2440x20mm, which is composed of two layers of calcium silicate boards with damping materials sandwiched in the middle, and is prefabricated in the factory. The waterproof membrane is 0.2mm thick, and the pure raw material is thickened with a polyethylene protective film, and the common specification is 4m wide. The upper and lower layers of 120 thick C25 concrete reinforcement are bidirectional φ10@150, and they are smoothed as they are hit. 1.5 thick polymer cement-based waterproof coating, can be divided into three or four times for brushing construction. The floating floor sound insulation pad is made of polyethylene closed-cell foam, with a thickness of 10mm, and laid in two layers. 63 thick C20 fine stone concrete reinforcement bidirectional φ6@150 is compacted and polished as it is applied. 5mm thick cement-based self-leveling coating, use a soft brush to brush the interface agent to the prepared base surface, and brush it evenly to avoid accumulation of liquid. The interface agent is applied twice, the first time mixed with water at a volume ratio of 1:5; the second time mixed with water at a volume ratio of 1:3. The drying time is at least 8 hours. The function of the interface agent is to improve the bonding ability between the self-leveling and the base, prevent the generation of bubbles, and prevent moisture from penetrating into the base before the self-leveling solidifies.

[0044] In this embodiment, shock-absorbing pads and filled sound-insulating cotton are provided to create a shock-absorbing space between the building and the ground, thereby greatly improving the shock-absorbing effect and the sound-insulating effect.

[0045] In one possible implementation, see Figure 2 As shown, the side of the shock-absorbing pad 11 is in a wavy structure, which increases the contact area with the sound insulation cotton 12 and improves the adhesion.

[0046] In one possible implementation, see Figure 3 As shown, a connecting block 13 is provided at the bottom side of the shock-absorbing pad 11, and a bolt 14 is connected to the connecting block 13. When in use, the shock-absorbing pad is connected by glue and then fixed by bolts to prevent the shock-absorbing pad from shifting after debonding.

[0047] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0048] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A floating floor device for use near rail transit, characterized in that: It includes a shock-absorbing layer, a sound-insulating layer, a waterproof layer, a concrete layer, a waterproof coating layer, a sound-insulating cushion layer, a fine stone concrete layer and a self-leveling layer arranged in sequence from bottom to top; The shock absorbing layer comprises: A plurality of shock-absorbing pads, wherein the plurality of shock-absorbing pads are arranged at intervals; Sound insulation cotton is filled between the plurality of shock-absorbing pads.

2. A floating floor device for use near rail transit according to claim 1, characterized in that: The shock-absorbing pad is in a cubic structure.

3. A floating floor device for use near rail transit according to claim 2, characterized in that: The side edge of the shock-absorbing pad is in a wave-shaped structure.

4. The floating floor device for use near rail transit according to claim 1, characterized in that: A connecting block is provided on the bottom side of the shock-absorbing pad block, and a bolt is connected to the connecting block.

5. The floating floor device for use near rail transit according to claim 1, characterized in that: The shock-absorbing pad block adopts a polyurethane shock-absorbing pad.

6. The floating floor device for use near rail transit according to claim 1, characterized in that: The sound insulation cotton adopts a glass wool board with a density not less than 64kg / m³.

7. The floating floor device for use near rail transit according to claim 1, characterized in that: The sound insulation layer adopts a composite sound insulation board.

8. The floating floor device for use near rail transit according to claim 1, characterized in that: The waterproof layer adopts a 0.2 mm thick polyethylene waterproof membrane.

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