Construction method for soundproofing and vibration isolation of a soundproofing pool

Abstract

The application relates to a construction method for soundproofing and vibration isolation of a soundproofing pool, comprising the following steps: excavating a foundation pit in a construction area, and constructing a diaphragm wall at the edge of the foundation pit; constructing a pool in the foundation pit; providing a plurality of rib plates, the height of the rib plates being matched with the height of the diaphragm wall, a plurality of the rib plates being arranged at intervals between the diaphragm wall and the pool, a plurality of cavities being formed between the rib plates, the diaphragm wall and the pool; providing medium sand, the medium sand being filled in one side of the cavities close to the pool to form a medium sand layer, the height of the medium sand layer being matched with the top height of the pool; and providing backfill soil, the backfill soil being filled in the remaining part of the cavities to form a backfill soil layer.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and specifically to a construction method for soundproofing and vibration wave isolation of a silencing water tank. Background Technology

[0002] An anechoic tank is a large-scale experimental water tank specifically designed to simulate a marine environment. Its core function is to absorb reflected sound waves using special materials, creating a free sound field similar to an infinitely open body of water, facilitating researchers' testing of underwater acoustic equipment in the laboratory. In China, most anechoic tanks are built above ground indoors, while some large facilities are integrated into the building structure with a semi-underground layout, located entirely within the laboratory building. Small underground anechoic tanks typically achieve vibration and sound insulation through vibration isolation trenches. These trenches are usually dug outside the tank and filled with foam boards to achieve the vibration isolation effect. However, for some large tanks, vibration isolation trenches can pose a significant safety hazard due to foundation pit instability, and the construction cost of using large amounts of foam boards is high. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a construction method for soundproofing and vibration wave isolation of a silencing water tank. The method involves connecting the diaphragm wall and the water tank with ribs to ensure the overall structural safety of the water tank. At the same time, a medium sand layer and a backfill soil layer are set between the diaphragm wall and the water tank, so that the energy of vibration waves and sound waves attenuates rapidly when they propagate in the two media, thereby achieving the effect of soundproofing and vibration wave isolation.

[0004] The technical solution to achieve the above objectives is a construction method for sound insulation and vibration wave isolation of an anechoic water tank, which includes the following steps:

[0005] Excavate a foundation pit within the construction area and construct a diaphragm wall at the edge of the foundation pit;

[0006] A water tank was constructed within the aforementioned foundation pit;

[0007] A plurality of ribs are provided, the height of which is adapted to the height of the diaphragm wall. A plurality of ribs are provided at intervals between the diaphragm wall and the water tank, and a plurality of cavities are formed between the ribs, the diaphragm wall and the water tank.

[0008] Medium sand is provided and filled into the cavity on the side near the water tank to form a medium sand layer, the height of which is adapted to the height of the top of the water tank;

[0009] Backfill soil is provided and used to fill the remaining portion of the cavity to form a backfill layer.

[0010] Furthermore, before the medium sand layer is filled, a drainage well is constructed inside the cavity.

[0011] Furthermore, the rib plate forms a water passage hole, and the rib plate is fixedly installed between the diaphragm wall and the water tank, so that the water passage hole connects two adjacent cavities.

[0012] Furthermore, after the medium sand layer is laid, geotextile is provided and laid on the side of the medium sand layer.

[0013] Furthermore, when fixing the rib between the water tank and the diaphragm wall, a vibration isolation pad is provided, and the vibration isolation pad is disposed between the rib and the diaphragm wall.

[0014] Furthermore, before the medium sand layer is filled, gravel is laid on top of the diaphragm wall to form a gravel layer.

[0015] Furthermore, when laying the crushed stone layer, geotextile is wrapped around the outside of the crushed stone layer.

[0016] Furthermore, the rib plate has armholes at both ends. When the rib plate is fixed between the diaphragm wall and the water tank, the armholes at both ends of the rib plate are fixed to the water tank and the diaphragm wall respectively.

[0017] Furthermore, during the construction of the water tank, the distance between the diaphragm wall and the water tank is determined according to the on-site construction requirements.

[0018] Furthermore, during the construction of the diaphragm wall, the thickness of the diaphragm wall is determined according to the on-site construction requirements.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] Ribs are used to connect the diaphragm wall and the water tank to ensure the overall structural safety of the water tank. At the same time, a medium sand layer and a backfill soil layer are set between the diaphragm wall and the water tank so that the energy of vibration waves and sound waves will be rapidly attenuated when they propagate in the two media, thereby achieving the effect of sound insulation and vibration wave isolation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional diagram of a construction method for sound insulation and vibration wave isolation in a silencing water tank.

[0022] Figure 2 This is a schematic diagram of the structure between the water tank and the diaphragm wall, illustrating a construction method for sound insulation and vibration wave isolation in a silencing water tank.

[0023] Figure 3 This diagram illustrates the connection effect of ribs in a construction method for sound insulation and vibration wave isolation in a noise-absorbing water tank.

[0024] Legend: 1. Diaphragm wall; 2. Water tank; 3. Rib plate; 4. Drainage well; 5. Water passage hole; 6. Medium sand layer; 7. Backfill soil layer; 9. Crushed stone layer; 10. Vibration isolation pad. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] See Figure 1 A construction method for sound-absorbing water tank with sound insulation and vibration wave isolation includes the following steps: excavating a foundation pit in the construction area and constructing a diaphragm wall 1 at the edge of the foundation pit; constructing a water tank 2 in the foundation pit; providing a plurality of ribs 3, the height of which is adapted to the height of the diaphragm wall 1, and spaced between the diaphragm wall 1 and the water tank 2, forming a plurality of cavities between the ribs 3, the diaphragm wall 1 and the water tank 2; providing medium sand and filling the cavities near the water tank 2 to form a medium sand layer 6, the height of which is adapted to the top height of the water tank 2; and providing backfill soil and filling the remaining part of the cavities to form a backfill soil layer 7.

[0027] In a preferred embodiment of this invention, a foundation pit is excavated at the construction site, the depth of which is adapted to the depth of the water tank 2. A diaphragm wall 1 is constructed at the edge of the foundation pit, serving as the retaining structure to ensure overall soil retention and seepage prevention. The water tank 2 is then constructed within the foundation pit, and rib plates 3 are fixedly connected to the diaphragm wall 1 and the water tank 2, forming several cavities between the water tank 2 and the diaphragm wall 1. Preferably, the rib plates 3 divide the space between the diaphragm wall 1 and the water tank 2 into several cavities, eliminating the need to excavate large-sized vibration isolation trenches, reducing the construction risk of the foundation pit, and improving the overall stability of the foundation pit. Backfilling is then carried out into each cavity, filling the side of the cavity closest to the water tank 2 with medium sand to form a medium sand layer 6, which extends from the bottom of the cavity to the top of the water tank 2. Then, backfilling is performed... The remaining space in the cavity is filled with soil to form backfill layer 7, completing the backfilling construction of the cavity. Preferably, medium sand is a porous granular material. When external sound waves and vibration waves pass through the medium sand layer 6, the vibration energy can be effectively dissipated and attenuated, which can reduce the vibration and noise transmitted to the water tank 2 and improve the sound field environment inside the water tank 2. The remaining area of ​​the cavity is filled with backfill soil to form backfill layer 7. The medium sand and backfill soil form a backfill structure with two different media. Sound waves and vibration waves will be reflected when they pass through the interface of different media, further consuming vibration and noise energy and improving the overall sound insulation and vibration wave isolation effect. The ribs 3 are arranged at intervals to divide the large gap between the diaphragm wall 1 and the water tank 2 into multiple cavities. The cavities are filled with medium sand and backfill soil respectively, and the vibration waves and sound waves are attenuated and consumed by different backfill media.

[0028] Furthermore, before filling the medium sand layer 6, a drainage well 4 is constructed within the cavity. Preferably, by setting up the drainage well 4, groundwater that has seeped into the cavity can be collected and drained, reducing the moisture content of the backfill medium within the cavity and minimizing the possibility of the medium sand and backfill soil becoming completely saturated with groundwater; preventing groundwater from filling the pores of the medium and forming a propagation path for vibration waves and sound waves, reducing the transmission of external vibrations to the water tank 2 via the water body, and ensuring the sound insulation and vibration wave isolation function of the medium sand layer 6.

[0029] Furthermore, the rib plate 3 forms a water passage hole 5, and the rib plate 3 is fixedly installed between the diaphragm wall 1 and the water tank 2, so that the water passage hole 5 connects two adjacent cavities. Preferably, the water passage hole 5 forms a fluid communication channel between independent adjacent cavities, allowing groundwater inside each cavity to circulate with each other. The groundwater can be collected at the cavity location where the drainage well 4 is arranged for unified pumping, eliminating the need to set up a separate drainage well 4 in each cavity, reducing the number of drainage wells 4 and lowering construction costs. Moreover, the water passage hole 5 can balance the groundwater level inside each cavity, avoiding water accumulation and excessively high local water levels in a single cavity, which would lead to lateral pressure differences caused by water level differences in the cavities. It also prevents the backfill medium in a local cavity from being saturated with groundwater and forming a vibration wave transmission channel, ensuring the sound insulation and vibration wave isolation performance of the medium sand layer 6 and the backfill soil layer 7 in each cavity.

[0030] Furthermore, after the medium sand layer 6 is laid, geotextile is provided and laid on the side of the medium sand layer 6. Preferably, the geotextile can prevent the medium sand layer 6 and the backfill soil layer 7 from migrating and mixing with each other, thereby maintaining the attenuation and dissipation capacity of the medium sand layer 6 for sound waves and vibration waves, and ensuring the long-term sound insulation and vibration wave insulation effect of the medium sand layer 6.

[0031] Furthermore, when fixing the rib plate 3 between the water tank 2 and the diaphragm wall 1, a vibration isolation pad 10 is provided, and the vibration isolation pad 10 is set between the rib plate 3 and the diaphragm wall 1. Preferably, vibration isolation pads 10 are set at the connection positions of the rib plate 3 and the diaphragm wall 1, so that when vibration waves and sound waves generated by the external environment are transmitted to the water tank 2 through the diaphragm wall 1, they need to be attenuated by passing through two vibration isolation pads 10. The vibration isolation pads 10 can block the transmission of solid vibrations, reduce the vibration energy transmitted to the water tank 2 through the solid sound bridge of the rib plate 3, and protect the internal sound field environment of the water tank 2. Preferably, by setting vibration isolation pads 10 between the rib plate 3 and the diaphragm wall 1 and between the rib plate 3 and the water tank 2, when vibration waves and sound waves generated by the external environment are transmitted to the water tank 2 through the diaphragm wall 1, they need to be attenuated by passing through two vibration isolation pads 10 successively, thus doubly blocking the transmission of solid vibrations.

[0032] Furthermore, before filling the medium sand layer 6, crushed stone is laid on top of the diaphragm wall 1 to form a crushed stone layer 9. By setting the crushed stone layer 9 on top of the diaphragm wall 1, there are a large number of gaps between the crushed stones, which can dissipate the vibration energy generated by vehicles and mechanical equipment on the surface of the construction area, weaken the downward transmission of vibration waves generated on the surface, and reduce the vibration transmitted to the interior of the water tank 2 through the diaphragm wall 1, thus playing the role of sound insulation and vibration wave isolation.

[0033] Furthermore, when laying the crushed stone layer 9, geotextile is wrapped around the outside of the crushed stone layer 9. By wrapping and restraining the crushed stone with geotextile, the crushed stone particles are prevented from scattering and shifting, maintaining the overall shape and laying thickness of the crushed stone layer 9, and avoiding the loss of crushed stone that would cause a decrease in local vibration isolation effect.

[0034] Furthermore, the rib plate 3 has haunches at both ends. When fixing the rib plate 3 between the diaphragm wall 1 and the water tank 2, the haunches at both ends of the rib plate 3 are fixed to the water tank 2 and the diaphragm wall 1, respectively. Preferably, the haunches at both ends of the rib plate 3 can increase the cross-sectional dimensions of the connection points between the rib plate 3 and the diaphragm wall 1 and the water tank 2, eliminate stress concentration at the right-angle intersection of the components, improve the shear and bending resistance of the joints at both ends of the rib plate 3, improve the stress conditions of the joints, reduce the risk of cracking at the ends of the rib plate 3, and improve the reliability of the overall structure.

[0035] Furthermore, during the construction of the water tank 2, the distance between the diaphragm wall 1 and the water tank 2 is determined according to the on-site construction requirements. In this embodiment, the distance between the diaphragm wall 1 and the water tank 2 is 800 to 1200 mm; when the geological conditions are poor and the lateral earth pressure is large, a distance of 1100 to 1200 mm can be selected; under the condition of limited site, a distance of 800 to 900 mm can be selected on the premise of meeting the vibration isolation performance and construction space; furthermore, the cavity is backfilled with a medium sand layer 6 on the side near the water tank 2, and the effective backfill width of the medium sand layer 6 is set to not less than 500 mm; when the distance between the diaphragm wall 1 and the water tank 2 is 800 mm, the width of the medium sand layer 6 is 500 mm; when the distance between the diaphragm wall 1 and the water tank 2 is 1200 mm, the width of the medium sand layer 6 can be 600 to 800 mm; the ribs 3 are arranged at intervals along the outer perimeter of the water tank 2, and the center distance between two adjacent ribs 3 is set to 2000 to 3000 mm; the thickness of the ribs 3 is 300 to 400 mm.

[0036] Furthermore, during the construction of the diaphragm wall 1, the thickness of the diaphragm wall 1 is determined according to the on-site construction requirements. Preferably, when the foundation pit depth is small, the geological conditions are good, and the lateral load is small, the thickness of the diaphragm wall 1 is selected as 800mm; when the foundation pit depth is medium, and the working conditions are conventional underground anechoic water tank 2, a thickness of 1000mm for the diaphragm wall 1 is preferred; when the foundation pit excavation depth is large, the soil layer is weak, the lateral earth pressure is large, and the surrounding deformation control is strict, the thickness of the diaphragm wall 1 is selected as 1100 to 1200mm.

[0037] The following describes the application process of the construction method for sound insulation and vibration wave isolation of a silencing water tank according to the present invention.

[0038] An excavation pit is constructed at the construction site, with its depth matching that of the water tank 2. A diaphragm wall 1 is constructed at the edge of the pit, serving as the retaining structure to ensure overall soil retention and seepage prevention. The water tank 2 is then constructed within the pit. Ribs 3 are fixedly connected to the diaphragm wall 1 and the water tank 2, creating several cavities between them. Preferably, the ribs 3 divide the space between the diaphragm wall 1 and the water tank 2 into several cavities, eliminating the need for large-scale vibration isolation trenches, reducing construction risks, and improving overall pit stability. Backfilling is then carried out into each cavity. Medium sand is filled into the cavity near the water tank 2, forming a medium sand layer 6, which extends from the bottom of the cavity to the top of the water tank 2. The remaining space in the cavity is then filled with backfill soil. The space is filled with backfill soil layer 7 to complete the backfilling construction of the cavity. Preferably, the medium sand is a porous granular material. When the sound waves and vibration waves transmitted from the outside pass through the medium sand layer 6, the vibration energy can be effectively dissipated and attenuated, which can reduce the vibration and noise transmitted to the water tank 2 and improve the sound field environment inside the water tank 2. The remaining area of ​​the cavity is filled with backfill soil to form backfill soil layer 7. The medium sand and backfill soil form two different media backfill structures. The sound waves and vibration waves will be reflected when they pass through the interface of different media, further consuming the vibration and noise energy and improving the overall sound insulation and vibration wave isolation effect. The ribs 3 are arranged at intervals to divide the large gap between the diaphragm wall 1 and the water tank 2 into multiple cavities. The cavities are filled with medium sand and backfill soil respectively. The different backfill media are used to achieve the attenuation and consumption of vibration waves and sound waves.

[0039] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A construction method for sound insulation and vibration wave isolation of an anechoic water tank, characterized in that, Includes the following steps: Excavate a foundation pit within the construction area and construct a diaphragm wall at the edge of the foundation pit; A water tank was constructed within the aforementioned foundation pit; A plurality of ribs are provided, the height of which is adapted to the height of the diaphragm wall. A plurality of ribs are provided at intervals between the diaphragm wall and the water tank, and a plurality of cavities are formed between the ribs, the diaphragm wall and the water tank. Medium sand is provided and filled into the cavity on the side near the water tank to form a medium sand layer, the height of which is adapted to the height of the top of the water tank; Backfill soil is provided and used to fill the remaining portion of the cavity to form a backfill layer.

2. The construction method for sound insulation and vibration wave isolation of an anechoic water tank according to claim 1, characterized in that: Before the medium sand layer is filled, a drainage well is constructed in the cavity.

3. The construction method for sound insulation and vibration wave isolation of a silencing water tank according to claim 1, characterized in that: The rib plate forms a water passage hole, and the rib plate is fixedly installed between the diaphragm wall and the water tank, so that the water passage hole connects two adjacent cavities.

4. The construction method for sound insulation and vibration wave isolation of a silencing water tank according to claim 1, characterized in that: After the medium sand layer is laid, geotextile is provided and laid on the side of the medium sand layer.

5. The construction method for sound insulation and vibration wave isolation of an anechoic water tank according to claim 1, characterized in that: in When the rib is fixed between the water tank and the diaphragm wall, a vibration isolation pad is provided, and the vibration isolation pad is set between the rib and the diaphragm wall.

6. The construction method for sound insulation and vibration wave isolation of an anechoic water tank according to claim 1, characterized in that: Before the medium sand layer is filled, gravel is laid on top of the diaphragm wall to form a gravel layer.

7. The construction method for sound insulation and vibration wave isolation of a silencing water tank according to claim 6, characterized in that: When laying the crushed stone layer, geotextile is wrapped around the outside of the crushed stone layer.

8. The construction method for sound insulation and vibration wave isolation of a silencing water tank according to claim 1, characterized in that: The rib plate has armholes at both ends. When the rib plate is fixed between the diaphragm wall and the water tank, the armholes at both ends of the rib plate are fixed to the water tank and the diaphragm wall respectively.

9. The construction method for sound insulation and vibration wave isolation of a silencing water tank according to claim 1, characterized in that: When constructing the water tank, the distance between the diaphragm wall and the water tank shall be determined according to the on-site construction requirements.

10. The construction method for sound insulation and vibration wave isolation of an anechoic water tank according to claim 1, characterized in that: When constructing the diaphragm wall, the thickness of the diaphragm wall shall be determined according to the on-site construction requirements.

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