Near-building structure deep foundation pit noise reduction barrier and construction method thereof

Abstract

The invention provides a near-building structure deep foundation pit noise reduction barrier and a construction method thereof. The construction method comprises the following steps that firstly, construction preparation is conducted; step 2, sound screen system installation; step 3, mounting the sky screen system; and 4, debugging and detecting the system. By means of the sound screen system and the sky screen system, foundation pit construction noise can be effectively controlled in an omnibearing mode, meanwhile, the operation convenience and flexibility in the construction process are guaranteed through the unique structure and installation mode, and powerful support is provided for achieving coordinated development of building construction and the environment.

Description

Technical Field

[0001] The invention relates to a noise control technology in a deep foundation pit construction process, and in particular to a noise reduction barrier for a deep foundation pit adjacent to a building and a construction method thereof. Background Art

[0002] In today's urban construction process, construction projects are increasing and their scale is expanding, especially deep foundation pit projects frequently appear in various high-rise buildings, underground complexes and other projects. However, these deep foundation pit construction activities near buildings are often accompanied by high-intensity noise, such as the roar of excavators, the impact of pile driving operations, and the driving sound of transport vehicles.

[0003] On the one hand, these noises seriously affect the normal life of the surrounding residents, disturbing their rest, study and work, causing many complaints from residents and having a negative impact on social harmony. On the other hand, with the continuous improvement of environmental protection laws and regulations and the continuous enhancement of people's environmental awareness, the restrictions on construction noise have become more stringent, and construction companies are facing huge environmental pressure.

[0004] Traditional noise reduction methods, such as simple soundproof enclosures, have many defects when facing the complex deep foundation pit construction environment. They may only block the propagation of noise in some directions to a certain extent, and are insufficient for noise protection from above the foundation pit and other angles. Moreover, during the construction process, traditional enclosures will hinder the lifting of construction equipment, the transportation channels of construction materials, and the convenient passage of construction personnel, reducing construction efficiency and increasing construction costs and safety risks.

[0005] In this context, there is an urgent need for an innovative noise reduction solution specifically for deep foundation pit construction adjacent to buildings. Summary of the invention

[0006] The object of the present invention is to provide a noise reduction barrier for a deep foundation pit adjacent to a building and a construction method thereof for solving the above-mentioned technical problems.

[0007] In order to solve the above technical problems, the present invention provides a construction method of a noise reduction barrier for a deep foundation pit adjacent to a building structure, comprising the following steps:

[0008] Step 1: Construction preparation:

[0009] Arrange concrete blocks at intervals on the ground at the side of the foundation pit boundary according to the design requirements, and pre-install embedded parts in the concrete blocks to ensure the accuracy of the position and height of the embedded parts so as to facilitate the subsequent connection of the base of the column;

[0010] Prepare the installation trolley, check whether it is operating normally, and ensure that the installation trolley can drive and operate normally;

[0011] Transport the various components of the sound barrier and skylight system to the construction site, place them in categories, and check whether the components are damaged or missing to ensure the integrity of the components;

[0012] Step 2: Installation of sound and screen system:

[0013] Use the installation trolley to transport the column to the predetermined position on the side of the foundation pit, and use the travel and positioning functions of the installation trolley to align the base of the column with the embedded parts on the concrete block;

[0014] Connect and fix the base of the column to the embedded parts to ensure that the column is installed firmly and vertically;

[0015] Install the socket sleeve on the side plate of the column, ensuring that the position and angle of the socket sleeve meet the requirements so as to facilitate the subsequent installation of the legs of the sound barrier unit;

[0016] To install the sound barrier, use the telescopic rod of the installation trolley to prop up the upper part of the sound barrier so that it is in an inclined position, and then insert the hinged legs at both ends of the bottom of the sound barrier unit into the socket sleeve of the column;

[0017] Operate the telescopic rod of the installation trolley to slowly straighten the upper part of the sound barrier to make it vertical, and weld or bolt the upper end of the sound barrier to the columns on both sides to ensure a firm connection;

[0018] Arrange anchor blocks on the sides of the columns and on the ground, and install windproof ropes through the anchor blocks to further reinforce the fixed columns;

[0019] Step 3: Installation of the canopy system:

[0020] Install the riding board on the top of the end column of the foundation pit, and ensure that the side plate slide rails of the riding board are installed flat and smooth so that the subsequent traction block can slide smoothly;

[0021] Install guide rods on the two end columns, and arrange multiple guide devices on the guide rods according to the design requirements; when installing the guide devices, first firmly connect the installation block with the guide rod, and then install the sliding rod, sliding block, pad, connecting block, cross bar, pad, vertical rod and roller;

[0022] Unfold the sound-absorbing net and place it just above the foundation pit, connect the traction cap head at the side end of the sound-absorbing net to the traction block of the traction device, and pass the steel wire rope in the middle of the sound-absorbing net through the drum and connect it to the traction drum protection device;

[0023] Step 4: System debugging and testing:

[0024] Conduct a comprehensive inspection of the installed sound screen system and skylight system;

[0025] Test the opening and closing function of the canopy system, start the traction device, and observe whether the traction block can drive the traction cap of the sound-absorbing net to move smoothly, and whether the wire rope can be rolled and retracted normally under the action of the roller, to ensure that the sound-absorbing net can be opened and closed according to the design requirements;

[0026] Check the stability of the sound barrier system, observe the stability of the columns and the fixing of the sound barrier under different wind conditions;

[0027] Conduct preliminary testing on the noise reduction effect of the entire noise reduction barrier to evaluate whether the noise reduction effect meets expectations, and continue to debug until it meets expectations.

[0028] Furthermore, in step two, the sound screen system is located on the side of the foundation pit, and includes columns and sound barriers. The columns and the sound barriers are arranged in sequence and spaced apart. The columns have a base, and both ends of the bottom of the sound barrier unit have hinged legs.

[0029] Furthermore, in step two, concrete blocks are arranged at intervals on the ground on the side of the foundation pit boundary. The concrete blocks have embedded parts, and the base of the column is connected through the embedded parts. The side panels of the column are installed with socket sleeves, and the legs of the sound barrier unit are installed in the socket sleeves.

[0030] Furthermore, in step 2, anchor blocks are arranged on the sides of the columns and on the ground, and windproof ropes are installed through the anchor blocks to connect and fix the columns.

[0031] Furthermore, in step three, the skylight system is arranged in the form of a mesh cover directly above the foundation pit, including a sound-absorbing net, a traction device and a guiding device. The traction device is located on the side of the foundation pit, and the guiding device is located at the end of the foundation pit. Under the action of the traction device and the guiding device, the skylight system can be opened and closed.

[0032] Furthermore, in step three, the side ends of the sound-absorbing net are provided with a plurality of traction caps, the middle of the sound-absorbing net is provided with a plurality of steel wire ropes, and the steel wire ropes are protected by roller traction cylinders.

[0033] Furthermore, in step three, the traction device includes a riding board located at the top of the column of the end head, the side plate of the riding board has a slide rail, and a traction block that can slide relatively is installed on the slide rail, and the traction block is connected to the traction cap head.

[0034] Furthermore, in step three, the guide rod is installed on the columns at both end ends, and a plurality of guide devices are arranged on the guide rod, the guide device includes a mounting block connected to the guide rod, a sliding rod is provided at the lower part of the mounting block, a sliding block which can slide relatively is provided on the sliding rod, pads are provided on both sides of the sliding block, connecting blocks are installed using the pads, a cross bar is connected and installed at the lower part of the connecting block, two pads are provided at both ends of the cross bar, a vertical rod installed using connecting bolts is installed between the two pads, a roller installed by the end head is installed on the vertical rod, and a steel wire rope protected by a traction drum can be installed on the roller.

[0035] Furthermore, in step three, when the sound-absorbing net is opened and closed, under the power of the traction block, the traction block drives the traction cap head of the sound-absorbing net, thereby driving the opening and closing of the sound-absorbing net. Since the width of the sound-absorbing net is large, under the power of the drum, the wire rope can be rolled and retracted, thereby guiding the opening and closing direction of the sound-absorbing net.

[0036] A noise reduction barrier for a deep foundation pit adjacent to a building or structure is obtained through the construction of the above-mentioned noise reduction barrier for a deep foundation pit adjacent to a building or structure.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. Easy and efficient installation: The unique method of installing the legs first and then straightening the sound barrier body can achieve rapid and accurate positioning of the sound barrier, significantly improve installation efficiency, and reduce installation time and labor costs.

[0039] 2. The structure is stable and reliable: the columns are connected to the embedded parts in the concrete block through the base, and are fixed with anchor blocks and windproof ropes on the sides. The sound barrier legs are installed in the socket sleeves of the columns and are welded or bolted to the columns. This ensures the structural stability of the entire sound barrier system in complex construction environments, can effectively resist external forces such as wind, and ensure long-term normal use.

[0040] 3. Significant noise and dust reduction: The sound screen and the sound-absorbing net work together to effectively absorb and block the noise from foundation pit construction, while also reducing dust and interference with surrounding buildings.

[0041] 4. Flexible operation: The traction device and guiding device of the canopy system are cleverly designed to realize the convenient opening and closing of the sound-absorbing net, which can not only effectively play the noise reduction function during construction, but also facilitate equipment lifting, material transportation and other operations during the construction process, taking into account both construction noise reduction and on-site operation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a top plan view schematic diagram of the present invention;

[0043] Figure 2 It is a side schematic diagram of the present invention;

[0044] Figure 3 It is a cross-sectional schematic diagram of the present invention;

[0045] Figure 4 for Figure 2 Enlarged view of midpoint A;

[0046] Figure 5 for Figure 3 A magnified view of the middle node B;

[0047] Figure 6 Schematic diagram of the trolley for installing the sound barrier unit.

[0048] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0049] In the figure: 1. foundation pit; 2. ground; 3. steel sheet piles; 4. concrete blocks; 5. embedded parts; 6. columns; 7. base; 8. wind rope; 9. anchor block; 10. socket sleeve; 11. sound barrier; 12. legs; 13. sound-absorbing net; 14. riding board; 15. slide rail; 16. traction block; 17. traction cap head; 18. guide rod; 19. guide device; 20. mounting block; 21. slide rod; 22. sliding block; 23. pad; 24. connecting block; 25. cross bar; 26. pad; 27. connecting bolt; 28. vertical bar; 29. ​​roller; 30. end; 31. wire rope; 32. traction cylinder; 33. mounting trolley; 34. wheel; 35. telescopic rod. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0051] Those skilled in the art should understand that, in the disclosure of the present application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present application.

[0052] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0053] Example 1

[0054] like Figure 1-Figure 6 As shown, the present invention provides a noise reduction barrier for a deep foundation pit adjacent to a building, and the noise reduction barrier for a deep foundation pit adjacent to a building comprises a sound screen system and a skylight system.

[0055] The sound screen system is located on the side of the foundation pit 1, and includes columns 6 and sound barriers 11. The columns 6 and the sound barriers 11 are arranged in sequence at intervals. The columns 6 have a base 7, and the bottom ends of the sound barrier unit have hinged legs 12; concrete blocks 4 are arranged at intervals on the ground 2 on the side of the boundary of the foundation pit 1, and the concrete blocks 4 have embedded parts 5. The base 7 of the columns 6 is connected through the embedded parts 5. The side plates of the columns 6 are installed with socket sleeves 10, and the legs 12 of the sound barrier unit are installed in the socket sleeves 10; anchor blocks 9 are arranged on the sides of the columns 6 and the ground 2, and windproof ropes 8 are installed through the anchor blocks 9 to connect and fix the columns 6.

[0056] The column 6 is installed by using the installation trolley 33, and the installation trolley 33 has wheels 34 for driving into position; when the sound barrier 11 is installed, the telescopic rod 35 of the installation trolley 33 is used to temporarily support the sound barrier 11, and the upper part of the sound barrier 11 is in an inclined posture. The legs 12 of the sound barrier 11 are installed into the socket sleeve 10, and then the upper part of the sound barrier 11 is straightened by using the telescopic rod 35, and then the upper end of the sound barrier 11 is welded or bolted to the columns 6 on both sides. Based on this method of first installing the legs 12 and then straightening the main body of the sound barrier 11, it is conducive to the rapid and accurate positioning of the sound barrier 11.

[0057] The canopy system is arranged in the form of a mesh cover just above the foundation pit 1, and includes a sound-absorbing net 13, a traction device and a guiding device 19. The traction device is located on the side of the foundation pit 1, and the guiding device 19 is located at the end 30 of the foundation pit 1. Under the action of the traction device and the guiding device 19, the canopy system can be opened and closed; the side end of the sound-absorbing net 13 is provided with a plurality of traction caps 17, and the middle of the sound-absorbing net 13 is provided with a plurality of steel wire ropes 31, and the steel wire ropes 31 are protected by roller traction cylinders 32; the traction device includes a riding plate 14 located at the top of the end 30 column 6, and the side plate of the riding plate 14 has a slide rail 15, and a traction block 16 that can slide relatively is installed on the slide rail 15, and the traction block 16 is connected to the traction cap 17; the guide rod 18 is installed on the two end heads 30 columns 6, and a plurality of guiding devices 19 are arranged on the guide rod 18, and the guide device 19 includes a connecting rod 18 and a connecting rod 18 connected to the guide rod 18. The mounting block 20 is installed, and the mounting block 20 has a slide bar 21 at the lower part, and a slide block 22 that can slide relatively is provided on the slide bar 21. Pads 23 are provided on both sides of the slide block 22. A connecting block 24 is installed by using the pad 23. A cross bar 25 is connected and installed at the lower part of the connecting block 24. Two pads 26 are provided at both ends of the cross bar 25. A vertical rod 28 installed by a connecting bolt 27 is installed between the two pads 26. A roller 29 installed by an end 30 is installed on the vertical rod 28. A steel wire rope 31 protected by a traction cylinder 32 can be installed on the roller 29; when the sound-absorbing net 13 is opened and closed, under the power of the traction block 16, the traction block 16 drives the traction cap head 17 of the sound-absorbing net 13, thereby driving the opening and closing of the sound-absorbing net 13. Since the width of the sound-absorbing net 13 is large, under the power of the roller 29, the steel wire rope 31 can be rolled and retracted, thereby guiding the opening and closing direction of the sound-absorbing net 13.

[0058] Example 2

[0059] Based on the same concept, this embodiment provides a construction method for a noise reduction barrier in a deep foundation pit adjacent to a building structure, comprising the following construction steps:

[0060] Step 1: Construction preparation:

[0061] Arrange concrete blocks 4 at intervals on the ground 2 at the side of the boundary of the foundation pit 1 according to the design requirements, and pre-set embedded parts 5 in the concrete blocks 4 to ensure that the position and height of the embedded parts 5 are accurate so as to connect the base 7 of the column 6 later;

[0062] Prepare the installation trolley 33 and check whether its wheels 34, telescopic rods 35 and other components are operating normally to ensure that the installation trolley 33 can travel and operate normally;

[0063] Transport the various components of the sound barrier 11 and the skylight system to the construction site, arrange them in categories, and check whether the components are damaged or missing to ensure the integrity of the components.

[0064] Step 2: Installation of sound and screen system:

[0065] The column 6 is transported to a predetermined position on the side of the foundation pit 1 by using the installation trolley 33, and the base 7 of the column 6 is aligned with the embedded part 5 on the concrete block 4 by the driving and positioning functions of the installation trolley 33;

[0066] Connect and fix the base 7 of the column 6 to the embedded part 5 to ensure that the column 6 is installed firmly and vertically;

[0067] Install the socket sleeve 10 on the side plate of the column 6, ensuring that the position and angle of the socket sleeve 10 meet the requirements so as to facilitate the subsequent installation of the legs 12 of the sound barrier unit;

[0068] To install the sound barrier 11, use the telescopic rod 35 of the installation trolley 33 to prop up the upper part of the sound barrier 11 so that it is in an inclined position, and then insert the legs 12 hinged at both ends of the bottom of the sound barrier 11 unit into the socket sleeve 10 of the column 6;

[0069] Operate the telescopic rod 35 of the installation trolley 33 to slowly straighten the upper part of the sound barrier 11 to make it vertical, and weld or bolt the upper end of the sound barrier 11 to the columns 6 on both sides to ensure a firm connection;

[0070] Anchor blocks 9 are arranged on the sides of the columns 6 and on the ground 2, and windproof ropes 8 are installed through the anchor blocks 9 to further reinforce the fixed columns 6 and enhance the stability of the sound barrier system under severe weather or other external forces.

[0071] Step 3: Installation of the canopy system:

[0072] Install the riding board 14 on the top of the column 6 at the end 30 of the foundation pit 1, and ensure that the side plate slide rails 15 of the riding board 14 are installed flat and smooth so that the subsequent traction block 16 can slide smoothly;

[0073] Install guide rods 18 on the two end caps 30 of the columns 6, and arrange multiple guide devices 19 on the guide rods 18 according to the design requirements; when installing the guide devices 19, first firmly connect the mounting block 20 with the guide rod 18, and then install the sliding rod 21, the sliding block 22, the pad 23, the connecting block 24, the cross bar 25, the pad 26, the vertical rod 28 and the roller 29 and other components to ensure that each component is tightly connected and can operate normally;

[0074] Unfold the sound-absorbing net 13 and place it just above the foundation pit 1, connect the traction cap 17 at the side end of the sound-absorbing net 13 to the traction block 16 of the traction device, and pass the steel wire rope 31 in the middle of the sound-absorbing net 13 through the drum 29 and connect it to the traction drum 32 protection device.

[0075] Step 4: System debugging and testing:

[0076] Carry out a comprehensive inspection of the installed sound screen system and skylight system to check whether all connections are firm, whether the components are installed in place, and whether there are any loose or missing parts;

[0077] Test the opening and closing function of the canopy system, start the traction device, and observe whether the traction block 16 can drive the traction cap head 17 of the sound-absorbing net 13 to move smoothly, and whether the wire rope 31 can roll and retract normally under the action of the roller 29, to ensure that the sound-absorbing net 13 can be opened and closed according to the design requirements;

[0078] Check the stability of the sound barrier system, observe the stability of the columns 6 and the fixing of the sound barrier 11 under different wind conditions, and adjust the wind ropes 8 and other reinforcement components if necessary;

[0079] Conduct a preliminary test on the noise reduction effect of the entire noise reduction barrier. Use noise detection equipment to measure construction noise at different locations in the surrounding area, compare it with the noise data before the barrier is installed, and evaluate whether the noise reduction effect meets expectations. If the expected effect is not achieved, check the installation and operation of each component, identify problems and make corrections.

[0080] Although this article uses more professional terms, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of this application; interpreting them as any additional restrictions is contrary to the spirit of this application.

[0081] The present application is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of this application. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present application.

Claims

1. A construction method for a noise reduction barrier in a deep foundation pit adjacent to a building structure, characterized in that: The following steps are involved: Step 1: Construction preparation: Arranging concrete blocks (4) at intervals according to design requirements on the ground (2) at the side of the boundary of the foundation pit (1), and pre-setting embedded parts (5) in the concrete blocks (4), ensuring that the position and height of the embedded parts (5) are accurate, so as to facilitate the subsequent connection of the base (7) of the column (6); Prepare the installation trolley (33) and check whether it is running normally to ensure that the installation trolley (33) can travel and operate normally; Transport the various components of the sound barrier (11) and the skylight system to the construction site, arrange them by category, and check whether the components are damaged or missing to ensure the integrity of the components; Step 2: Installation of sound and screen system: The column (6) is transported to a predetermined position on the side of the foundation pit (1) by using the installation trolley (33), and the base (7) of the column (6) is aligned with the embedded part (5) on the concrete block (4) through the driving and positioning functions of the installation trolley (33); Connect and fix the base (7) of the column (6) to the embedded part (5) to ensure that the column (6) is installed firmly and vertically; Installing a socket sleeve (10) on the side plate of the column (6) to ensure that the position and angle of the socket sleeve (10) meet the requirements, so as to facilitate the subsequent installation of the legs (12) of the sound barrier unit; The sound barrier (11) is installed by using the telescopic rod (35) of the installation trolley (33) to prop up the upper part of the sound barrier (11) so that it is in an inclined position, and then the legs (12) hinged at both ends of the bottom of the sound barrier (11) unit are inserted into the socket sleeve (10) of the column (6); Operate the telescopic rod (35) of the installation trolley (33) to slowly straighten the upper part of the sound barrier (11) to make it vertical, and weld or bolt the upper end of the sound barrier (11) to the columns (6) on both sides to ensure a firm connection; Anchor blocks (9) are arranged on the sides of the columns (6) and on the ground (2), and windproof ropes (8) are installed through the anchor blocks (9) to further reinforce the fixed columns (6); Step 3: Installation of the canopy system: Install a riding board (14) on the top of the column (6) at the end (30) of the foundation pit (1), and ensure that the side plate slide rails (15) of the riding board (14) are installed flat and smoothly so that the subsequent traction block (16) can slide smoothly; A guide rod (18) is installed on the two end posts (30) and a plurality of guide devices (19) are arranged on the guide rod (18) according to design requirements; when installing the guide device (19), the installation block (20) is first firmly connected to the guide rod (18), and then the sliding rod (21), the sliding block (22), the pad (23), the connecting block (24), the cross bar (25), the pad (26), the vertical rod (28) and the roller (29) are installed; The sound absorbing net (13) is unfolded and placed just above the foundation pit (1), so that the traction cap head (17) at the side end of the sound absorbing net (13) is connected to the traction block (16) of the traction device, and at the same time, the steel wire rope (31) in the middle of the sound absorbing net (13) is passed through the drum (29) and connected to the traction drum (32) protection device; Step 4: System debugging and testing: Conduct a comprehensive inspection of the installed sound screen system and skylight system; Test the opening and closing function of the canopy system, start the traction device, observe whether the traction block (16) can drive the traction cap head (17) of the sound-absorbing net (13) to move smoothly, and whether the steel wire rope (31) can roll and retract normally under the action of the roller (29), to ensure that the sound-absorbing net (13) can achieve the opening and closing operation according to the design requirements; Check the stability of the sound barrier system and observe the stability of the columns (6) and the fixing of the sound barrier (11) under different wind conditions; Conduct preliminary testing on the noise reduction effect of the entire noise reduction barrier to evaluate whether the noise reduction effect meets expectations, and continue to debug until it meets expectations.

2. The construction method of the noise reduction barrier for deep foundation pits adjacent to buildings and structures according to claim 1 is characterized in that: In step 2, the sound screen system is located on the side of the foundation pit (1), and includes columns (6) and sound barriers (11). The columns (6) and the sound barriers (11) are arranged in sequence and spaced apart. The columns (6) have a base (7), and the bottom ends of the sound barrier unit have hinged legs (12).

3. The construction method of the noise reduction barrier for deep foundation pits adjacent to buildings and structures according to claim 2 is characterized in that: In step 2, concrete blocks (4) are arranged at intervals on the ground (2) on the side of the boundary of the foundation pit (1), and embedded parts (5) are provided in the concrete blocks (4). The base (7) of the column (6) is connected through the embedded parts (5), and the side plate of the column (6) is installed with a socket sleeve (10), and the legs (12) of the sound barrier unit are installed in the socket sleeve (10).

4. The construction method of the noise reduction barrier for deep foundation pits adjacent to buildings and structures according to claim 3 is characterized in that: In step 2, anchor blocks (9) are arranged on the sides of the columns (6) and on the ground (2), and windproof ropes (8) are installed through the anchor blocks (9) to connect and fix the columns (6).

5. The construction method of the noise reduction barrier for deep foundation pits adjacent to buildings and structures according to any one of claims 1 to 4, characterized in that: In step three, the canopy system is arranged in the form of a mesh cover directly above the foundation pit (1), comprising a sound-absorbing mesh (13), a traction device and a guiding device (19), wherein the traction device is located at the side of the foundation pit (1), and the guiding device (19) is located at the end (30) of the foundation pit (1). Under the action of the traction device and the guiding device (19), the canopy system can be opened and closed.

6. The construction method of the noise reduction barrier for deep foundation pits adjacent to buildings and structures according to claim 5 is characterized in that: In step three, the side ends of the sound-absorbing net (13) are provided with a plurality of traction caps (17), the middle of the sound-absorbing net (13) is provided with a plurality of steel wire ropes (31), and the steel wire ropes (31) are protected by roller traction cylinders (32).

7. The construction method of the noise reduction barrier for deep foundation pits adjacent to buildings and structures according to claim 5 is characterized in that: In step three, the traction device includes a riding plate (14) located at the top of the column (6) of the end head (30), the side plate of the riding plate (14) has a slide rail (15), and a traction block (16) that can slide relatively is installed on the slide rail (15), and the traction block (16) is connected to the traction cap head (17).

8. The construction method of the noise reduction barrier for deep foundation pits adjacent to buildings and structures according to claim 7 is characterized in that: In step three, the guide rod (18) is installed on the column (6) of the two end heads (30), and a plurality of guide devices (19) are arranged on the guide rod (18). The guide device (19) includes a mounting block (20) connected and installed with the guide rod (18), a sliding rod (21) is provided at the lower part of the mounting block (20), a sliding block (22) which can slide relatively is provided on the sliding rod (21), pads (23) are provided on both sides of the sliding block (22), a connecting block (24) is installed by using the pads (23), a cross bar (25) is connected and installed at the lower part of the connecting block (24), two pads (26) are provided at both ends of the cross bar (25), a vertical rod (28) installed by using connecting bolts (27) is installed between the two pads (26), a roller (29) installed by the end head (30) is installed on the vertical rod (28), and a steel wire rope (31) protected by a traction drum (32) can be installed on the roller (29).

9. The construction method of the noise reduction barrier for deep foundation pits adjacent to buildings and structures according to claim 8 is characterized in that: In step three, when the sound absorbing net (13) is opened and closed, under the power of the traction block (16), the traction block (16) drives the traction cap head (17) of the sound absorbing net (13), thereby driving the opening and closing of the sound absorbing net (13). Since the width of the sound absorbing net (13) is relatively large, under the power of the roller (29), the steel wire rope (31) can be rolled and retracted, thereby guiding the opening and closing direction of the sound absorbing net (13).

10. A noise reduction barrier for deep foundation pits near buildings and structures, characterized in that: It is obtained by constructing a noise reduction barrier in a deep foundation pit adjacent to a building structure as described in any one of claims 1-9.

Images