Rainwater inspection well structure
By designing the structure of the stormwater inspection well, including the reverse well and the inspection well, the combination of newly built box culverts and concrete flow troughs, the construction difficulty and leakage risks of the stormwater pipelines and box culverts are solved, and a stable and safe water flow transition effect is achieved.
Patent Information
- Application Number
- CN202422096507.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-28
AI Technical Summary
During the urban construction and renovation process, there is construction difficulty and leakage risk when connecting the circular rainwater pipes with rectangular current box culverts.
A rainwater inspection well structure is designed, including a reverse work well and an inspection well set up in the reverse work well. By setting up a new box culvert in the reverse work well, connecting the inspection well with the current box culvert, and using a concrete flow trough suitable for the top pipe and the new box culvert in the inspection well, water stops are provided at both ends to prevent leakage.
The connection between the rainwater pipe and the box culvert is achieved, the construction difficulty is reduced, and the leakage risk is effectively avoided through the water stop, improving the stability and safety of the connection.
Smart Images
Figure CN222835062U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, and particularly relates to a rainwater inspection well structure. Background Art
[0002] During the construction and renovation process in the urban area, due to the complex distribution of various municipal pipelines around the excavation pit, the pipe jacking construction often encounters intersections with the existing box culvert. In order not to affect the pipe jacking construction, the existing box culvert is usually blocked. After the corresponding pipe jacking construction work is completed, the existing box culvert needs to be restored and the plug is opened when it needs to be used again. Due to the influence of the construction environment and hydrogeology, it is difficult to connect the circular rainwater pipe with the existing box culvert with a rectangular cross-section, and the risk of leakage is prone to occur if the connection position of the rainwater pipe and the box culvert is improperly handled. Utility Model Content
[0003] The utility model aims to provide a rainwater inspection well structure for connecting a rainwater pipe and a box culvert in view of the deficiencies in the prior art.
[0004] The technical solution of the utility model is a rainwater inspection well structure, including a reverse well and an inspection well arranged in the reverse well, the reverse well including a first side wall connected to the top pipe and a second side wall connected to the existing box culvert, the inspection well abuts against the first side wall and is away from the second side wall, a plain concrete cushion layer is laid between the inspection well and the second side wall, a new box culvert is arranged above the plain concrete cushion layer, one end of the new box culvert is connected to the inspection well, and the other end is connected to the existing box culvert, a concrete flow trough is arranged in the inspection well, one end of the concrete flow trough is connected to the top pipe, and the other end is connected to the new box culvert, and water stop strips are arranged at the connection positions at both ends of the concrete flow trough.
[0005] Preferably, a groove is provided on the upper part of the concrete flow channel and the bottom is sealed with plain concrete, the opening at one end of the groove is matched with the rectangular hole of the newly built box culvert connected thereto, and the opening at the other end of the groove is matched with the circular hole of the top pipe connected thereto; according to the relative position of the top pipe and the newly built box culvert, the bottom surface of the groove is constructed as an inclined surface.
[0006] Preferably, an inverted L-shaped well ring is provided at the top of the reverse well, and a vertical well wall composed of multiple right-angled inverted trapezoidal structures is connected below the inverted L-shaped well ring, and the vertical well wall includes the first side wall and the second side wall; the bottom of the reverse well is sealed with plain concrete, and the vertical well wall surrounds the outside of the plain concrete bottom seal.
[0007] Preferably, a plurality of grouting ducts are arranged at intervals on the outer side of the vertical shaft wall, and the grouting ducts are driven into the soil around the vertical shaft wall at an upward slant along the vertical direction of the reverse working shaft, and the intersection angle α between the grouting ducts and the horizontal line is 15°.
[0008] Preferably, a drill bit is welded to the front end of the grouting conduit, a steel bar hoop is welded to the rear end, and grouting holes are arranged at intervals on the wall of the grouting conduit.
[0009] Preferably, an external rubber waterstop is laid at the connection position between the existing box culvert and the second side wall.
[0010] Preferably, the rubber waterstop includes a raised portion for covering the expansion joint and an extension portion connected to both sides of the raised portion, and the extension portion is pressed by a steel pad and then fastened by embedded bolts and nuts; the extension portion on one side is fastened to the existing box culvert, and the extension portion on the other side is fastened to the second side wall; the laying position of the rubber waterstop is sealed with polyvinyl chloride putty.
[0011] Preferably, a reinforced concrete middle partition wall is provided in the reverse working well, and the reinforced concrete middle partition wall is arranged at the connection position between the inspection well and the newly built box culvert to separate the inspection well from the newly built box culvert.
[0012] Preferably, a backfill structure is provided in the reverse working well, the upper layer of the backfill structure is paved with an asphalt pavement, the top of the inspection well is connected with a reinforced concrete well ring, the top of the reinforced concrete well ring is provided with a well cover, and the well cover is flush with the pavement.
[0013] Preferably, a fence is provided on the top of the reverse working well, and the fence is composed of steel bar cross bars, steel bar vertical bars and a nylon net attached to the railing connected to the steel bar cross bars and the steel bar vertical bars.
[0014] The rainwater inspection well structure provided by the utility model is achieved by setting a new box culvert in the reverse-drilled well to connect the inspection well with the existing box culvert; at the same time, a concrete flow trough compatible with the jacking pipe and the new box culvert is adopted in the inspection well, so that there is a perfect transition when water flows through the box culvert and the jacking pipe, and water stop strips are provided at the connection positions at both ends of the concrete flow trough to avoid the risk of leakage at the connection positions; furthermore, by driving a grouting conduit into the periphery of the vertical well wall of the reverse-drilled well for grouting, the soil around the vertical well wall can be stabilized and the stability of the well body structure can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a top view of the rainwater inspection well structure of the utility model;
[0016] Figure 2 yes Figure 1 Schematic diagram of the cross section of AA;
[0017] Figure 3 yes Figure 1 Schematic diagram of the cross section of the middle BB;
[0018] Figure 4yes Figure 1 Schematic diagram of the cross section of the CC;
[0019] Figure 5 yes Figure 1 Schematic diagram of the structure of the Chinese and foreign-attached rubber waterstop;
[0020] Figure 6 yes Figure 1 Schematic diagram of the structure of the middle grouting duct.
[0021] Main component symbols:
[0022] Reverse well 1; plain concrete cushion layer 11; inverted L-shaped well ring 12; vertical well wall 13; first side wall 131; second side wall 132; plain concrete bottom seal 14; reinforced concrete middle partition wall 15; backfill structure 16; inspection well 2; concrete flow channel 21; groove 211; reinforced concrete well ring 22; well cover 23; jacking pipe 3; existing box culvert 4; newly built box culvert 5; grouting conduit 6; steel hoop 61; grouting hole 62; rubber water stop 7; raised portion 71; extension portion 72; steel pad 73; embedded bolts 74; nuts 75; polyvinyl chloride putty 76; road surface 8; enclosure 9; steel bar cross bar 91; steel bar vertical bar 92; nylon net 93 for railing external attachment. DETAILED DESCRIPTION
[0023] The utility model will be further described below in conjunction with the accompanying drawings:
[0024] See also Figures 1 to 4 As shown, the utility model provides a rainwater inspection well structure, including a reverse well 1 and an inspection well 2 arranged in the reverse well 1, the reverse well 1 includes a first side wall 131 connected to the top pipe 3 and a second side wall 132 connected to the existing box culvert 4, the inspection well 2 abuts against the first side wall 131 and is away from the second side wall 132, a plain concrete cushion layer 11 is laid between the inspection well 2 and the second side wall 132, a new box culvert 5 is arranged above the plain concrete cushion layer 11, one end of the new box culvert 5 is connected to the inspection well 2, and the other end is connected to the existing box culvert 4, so that the inspection well 2 passes through the new box culvert 5 to connect to the existing box culvert 4; a concrete flow channel 21 is arranged in the inspection well 2, one end of the concrete flow channel 21 is connected to the top pipe 3, and the other end is connected to the new box culvert 5, and water stop strips are arranged at the connection positions at both ends of the concrete flow channel 21 to avoid the risk of leakage at the connection positions.
[0025] In this embodiment, the first side wall 131 is connected to the dn2600 jacking pipe 3, and the second side wall 132 is connected to the existing box culvert 4 of 2500*2000mm; the inspection well 2 is a rectangular well with a horizontal cross-section of 3500*3500mm, one side of the inspection well 2 is against the first side wall 131, and the other side is far away from the second side wall 132 and a C15 plain concrete cushion layer 11 is laid between the second side wall 132, and a 3500*2000mm new box culvert 5 is arranged above the C15 plain concrete cushion layer 11, one end of the new box culvert 5 is connected to the inspection well 2, and the other end is connected to the existing box culvert 4.
[0026] See also Figures 1 to 4 As shown, a groove 211 is provided on the upper part of the concrete flow channel 21 and the bottom is sealed with plain concrete. The opening at one end of the groove 211 is adapted to the rectangular hole of the newly built box culvert 5 connected thereto, and the opening at the other end of the groove 211 is adapted to the circular hole of the jacking pipe 3 connected thereto. According to the relative position of the jacking pipe 3 and the newly built box culvert 5, as shown in FIG. Figure 2 There is a height difference between the top pipe 3 and the newly built box culvert 5 along the vertical direction of the reverse well 1, and the bottom surface of the groove 211 of the concrete flow channel 21 for connecting the top pipe 3 and the newly built box culvert 5 is constructed as an inclined surface; it should be noted that when there is no height difference between the top pipe 3 and the newly built box culvert 5 along the vertical direction of the reverse well 1, the bottom surface of the groove 211 is constructed as a horizontal surface. By setting the concrete flow channel 21 that matches the position of the top pipe 3 and the newly built box culvert 5, there is a perfect transition when water flows through the box culvert and the top pipe.
[0027] See also Figures 2 to 4 As shown, an inverted L-shaped well ring 12 is arranged at the top of the reverse well 1, and a vertical well wall 13 composed of multiple right-angled inverted trapezoidal structures is connected below the inverted L-shaped well ring 12, and the vertical well wall 13 includes a first side wall 131 and a second side wall 132; the bottom of the reverse well 1 adopts a plain concrete bottom seal 14, and the vertical well wall 13 surrounds the outside of the plain concrete bottom seal 14.
[0028] See also Figures 2 to 4 As shown, a number of grouting pipes 6 are arranged at intervals on the outside of the vertical well wall 13. The grouting pipes 6 are tilted upward along the vertical direction of the reverse well 1 and driven into the soil around the vertical well wall 13 to stabilize the soil around the reverse well; the intersection angle α between the grouting pipes 6 and the horizontal line is 15° to prevent the slurry from flowing back during the grouting process. For details, please refer to Figure 6 As shown, a drill bit is welded to the front end of the grouting conduit 6, a steel bar hoop 61 is welded to the rear end, and grouting holes 62 are arranged at intervals on the pipe wall of the grouting conduit 6.
[0029] In this embodiment, three rows of grouting conduits are arranged along the vertical direction of the reverse well 1, and a plurality of grouting conduits are arranged at intervals along the periphery of the vertical well wall 13 in each row; Steel pipe, length L is 2.5m, circumferential spacing is 400mm, longitudinal spacing is 1000mm, the pipe wall is staggered with holes every 150mm, the hole diameter is A drill bit is welded at the front end of the catheter and a drill bit is welded at the tail end. The steel hoop is driven into the soil at a 15° angle along the vertical wall of the reverse well. The pre-grouting of the conduit uses M30 cement slurry with a water-cement ratio of 0.8:1-1:1. A stopper is set at the end of the pipe, and the grouting pressure is 0.5-1.0MPa. After the grouting is completed, the grouting effect is checked by drilling or using an acoustic detection instrument. If it does not meet the requirements, grouting is performed and the grouting parameters are adjusted accordingly.
[0030] See also Figure 2 , Figure 5 As shown, an external rubber water stop 7 is laid at the connection position between the existing box culvert 4 and the second side wall 132. Specifically, a hole is left on the second side wall 132 at the interface position with the existing box culvert 4 according to the size of the existing box culvert 4, and an external rubber water stop 7 is laid at the linear portion where the existing box culvert 4 contacts the second side wall 132.
[0031] See also Figure 5 As shown, the rubber waterstop 7 includes a protrusion 71 for covering the expansion joint and an extension 72 connected to the protrusion 71 on both sides. The extension 72 is pressed by a steel pad 73 and then fastened by embedded bolts 74 and nuts 75; one side of the extension 72 is fastened to the existing box culvert 4, and the other side of the extension is fastened to the second side wall 132; the laying position of the rubber waterstop 7 is sealed with polyvinyl chloride putty 76.
[0032] In this embodiment, the external rubber water stop 7 is a rubber belt with a thickness of 6 mm and a total width of 390 mm. The extension 72 of the rubber belt is pressed by a 6 mm thick steel pad 73. The embedded studs 74 and M12 nuts 75 are fastened, and the laying position of the rubber water stop 7 is sealed with 802 type polyvinyl chloride putty 76.
[0033] See also Figure 2 As shown, a reinforced concrete middle partition wall 15 is provided in the reverse-excavated well 1 , and the reinforced concrete middle partition wall 15 is arranged at the connection position between the inspection well 2 and the newly-built box culvert 4 to separate the inspection well 2 and the newly-built box culvert 4 .
[0034] In this embodiment, a 500 mm thick C25 reinforced concrete middle partition wall 15 is provided in the reverse working well 1. The reinforced concrete middle partition wall 15 is arranged at the connection position between the inspection well 2 and the newly built box culvert 4. Since the working conditions and functions of the inspection well 2 and the newly built box culvert 4 are different, the inspection well 2 and the newly built box culvert 4 are separated into different working spaces by setting the reinforced concrete middle partition wall 15.
[0035] See also Figure 2As shown, a backfill structure 16 is provided in the reverse well 1, and backfill material is used for backfilling. The upper layer of the backfill structure 16 is paved with an asphalt pavement 8, and a reinforced concrete well ring 22 is connected to the top of the inspection well 2, and a well cover 23 is provided on the top of the reinforced concrete well ring 22, and the well cover 23 is flush with the pavement 8.
[0036] In this embodiment, the reverse well 1 is backfilled with backfill material, for example: when stone powder slag is used for backfilling, the relative density of the stone powder slag backfill is 0.65, and the compaction degree is not less than 0.94, so as to ensure the quality and stability of the backfill structure 16; after the backfilling is completed, the asphalt pavement 8 is repaired on the upper layer of the backfill structure 16, and the part of the inverted L-shaped well ring 12 located above the asphalt pavement is broken after the construction is completed; the top of the inspection well 2 is connected with a size of The C35 prefabricated reinforced concrete well ring 22 has a size of The heavy ductile iron manhole cover 23 is flush with the asphalt pavement 8.
[0037] See also Figures 2 to 4 As shown, a fence 9 is provided on the top of the reverse working well 1, and the fence 9 is composed of a steel bar cross bar 91, a steel bar vertical bar 92, and a railing external nylon net 93 connected to the steel bar cross bar 91 and the steel bar vertical bar 92; in this embodiment, the fence 9 is composed of Steel bar 91, The railing is composed of a steel bar vertical rod 92 and a nylon net 93 connected to the steel bar horizontal rod 91 and the steel bar vertical rod 92. The fence 9 is set to improve the safety of the construction.
[0038] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.
Claims
1. A rainwater inspection well structure, characterized in that: It includes a reverse well and an inspection well arranged in the reverse well, the reverse well includes a first side wall connected to the top pipe and a second side wall connected to the existing box culvert, the inspection well abuts against the first side wall and is away from the second side wall, a plain concrete cushion layer is laid between the inspection well and the second side wall, a new box culvert is arranged above the plain concrete cushion layer, one end of the new box culvert is connected to the inspection well, and the other end is connected to the existing box culvert, a concrete flow channel is arranged in the inspection well, one end of the concrete flow channel is connected to the top pipe, and the other end is connected to the new box culvert, and waterstop strips are arranged at the connecting positions at both ends of the concrete flow channel.
2. The rainwater inspection well structure according to claim 1 is characterized in that: A groove is provided on the upper part of the concrete flow channel and the bottom is sealed with plain concrete. The opening at one end of the groove is matched with the rectangular hole of the newly built box culvert connected thereto, and the opening at the other end of the groove is matched with the circular hole of the top pipe connected thereto. According to the relative position of the top pipe and the newly built box culvert, the bottom surface of the groove is constructed as an inclined surface.
3. The rainwater inspection well structure according to claim 1 is characterized in that: An inverted L-shaped well ring is arranged at the top of the reverse well, and a vertical well wall composed of multiple right-angled inverted trapezoidal structures is connected below the inverted L-shaped well ring, and the vertical well wall includes the first side wall and the second side wall; the bottom of the reverse well is sealed with plain concrete, and the vertical well wall surrounds the outside of the plain concrete bottom seal.
4. The rainwater inspection well structure according to claim 3 is characterized in that: A plurality of grouting pipes are arranged at intervals on the outer side of the vertical shaft wall. The grouting pipes are driven into the soil around the vertical shaft wall at an upward tilt along the vertical direction of the reverse working shaft. The intersection angle α between the grouting pipes and the horizontal line is 15°.
5. The rainwater inspection well structure according to claim 4 is characterized in that: A drill bit is welded to the front end of the grouting conduit, and a steel bar hoop is welded to the rear end. Grouting holes are arranged at intervals on the pipe wall of the grouting conduit.
6. The rainwater inspection well structure according to claim 1 is characterized in that: An external rubber waterstop is laid at the connection position between the existing box culvert and the second side wall.
7. The rainwater inspection well structure according to claim 6 is characterized in that: The rubber water stop comprises a raised portion for covering the expansion joint and an extension portion connected to both sides of the raised portion, wherein the extension portion is pressed by a steel backing plate and fastened by embedded bolts and nuts; The extension part on one side is fastened to the existing box culvert, and the extension part on the other side is fastened to the second side wall; the laying position of the rubber water stop is sealed with polyvinyl chloride putty.
8. The rainwater inspection well structure according to claim 1 is characterized in that: A reinforced concrete middle partition wall is provided in the reverse working well, and the reinforced concrete middle partition wall is arranged at the connection position between the inspection well and the newly built box culvert to separate the inspection well and the newly built box culvert.
9. The rainwater inspection well structure according to claim 1 is characterized in that: A backfill structure is provided in the reverse well, and an upper layer of the backfill structure is paved with an asphalt pavement. A reinforced concrete well ring is connected to the top of the inspection well, and a well cover is provided on the top of the reinforced concrete well ring, and the well cover is flush with the pavement.
10. The rainwater inspection well structure according to claim 1, characterized in that: A fence is arranged on the top of the reverse working well, and the fence is composed of a steel bar cross bar, a steel bar vertical bar, and a railing externally hung with a nylon net connected to the steel bar cross bar and the steel bar vertical bar.