Butt joint box culvert transformed from full water tank culvert

Abstract

The utility model relates to a full water tank culvert relocation and relocation butt joint box culvert and a construction method thereof. The full water tank culvert relocation and relocation butt joint box culvert comprises a U-shaped steel sleeve box, a row hole, a ring beam, a new box culvert, an old box culvert and an inspection shaft. The construction method for changing the full water tank culvert into the butt joint box culvert comprises the steps that firstly, the height of a ring beam on a top plate of an old box culvert is increased synchronously, and the ring beam is connected with old box culvert embedded steel bars; 2, a new box culvert is constructed according to design requirements. The butt-joint box culvert has the advantages that the butt-joint box culvert adopts the U-shaped steel sleeve box to block water flow of the box culvert, the cyclic repeated utilization rate is high, the steel plate rigidity is large, the stability of a weir body is guaranteed, the construction period is shortened, and the cost is saved; the U-shaped steel sleeve box is used as a temporary cofferdam in the box culvert and can be quickly mounted and dismounted, and the safety risks of box culvert silt accumulation caused by manual stacking of sandbag cofferdams and underwater manual dismounting are avoided.

Description

Technical Field

[0001] The utility model patent application relates to the field of drainage box culvert relocation construction, and specifically to a full water box culvert relocation docking box culvert and a construction method thereof. Background Art

[0002] In recent years, with the continuous development of urban construction in China, drainage box culverts have been widely adopted by municipalities due to their large structural size, good cast-in-place durability, strong structural integrity, high structural bearing capacity and many other advantages. With the increase in the number of box culverts, it is inevitable to connect multiple box culvert drainage networks to each other, or relocate them due to route changes. Many drainage box culverts are saturated with water inside. During the relocation and docking process, they cannot be successfully docked due to the influence of drainage flow rate and head pressure.

[0003] In the existing public application documents, Chinese utility model patent application number CN202211316840.X discloses the connection node and construction method of the new and old water inlet box culverts; including the old water inlet box culvert and the new water inlet box culvert; one end of the new water inlet box culvert is connected to the side wall of the old water inlet box culvert, and the end includes a permanent box culvert and a temporary diversion box culvert; the permanent box culvert is connected to the old water inlet box culvert to form a corner area; the temporary diversion box culvert is connected to the old water inlet box culvert at the upstream of the corner area, and when the permanent box culvert is connected to the old water inlet box culvert, the new water inlet box culvert is connected to the waterway in the old water inlet box culvert to divert water, so that the connection construction between the permanent box culvert and the old water inlet box culvert is completed under dry working conditions. The application of this utility model makes it possible to complete the connection node construction of the new and old water inlet box culverts without water interruption and long-distance diversion, and the box culvert transformation cycle is shorter and the cost is more economical; it has little impact on traffic, surrounding environment, etc., and weakens social contradictions.

[0004] Another example is the Chinese utility model patent application number CN202211317124.3, which discloses a quick connection node and construction method for the new and old water inlet culverts. The end of the new water inlet culvert is connected to the side wall of the old water inlet culvert, and is connected to the old water inlet culvert through a prefabricated box culvert; one end of the prefabricated box culvert is pushed in from the end of the new water inlet culvert and passes through the side wall of the old water inlet culvert to enter the old water inlet culvert, and the outer wall and the inner wall of the new water inlet culvert and the old water inlet culvert are filled with concrete for plugging and pouring. During construction, a new water inlet culvert is first built on one side of the old water inlet culvert; sandbags are set in the old water inlet culvert to build a weir to form a waterless jacking construction area; then, the side wall corresponding to the jacking of the prefabricated box culvert is chiseled to form a gap; then, in the new water inlet culvert, the prefabricated box culvert is pushed into the old water inlet culvert by jacking; finally, after filling with concrete for plugging and pouring, the sandbag cofferdam is removed and the foundation pit is backfilled with soil. The utility model makes it possible to connect the new and old water inlet culverts without cutting off the water supply and conducting long-distance diversion, thus shortening the renovation cycle and saving costs.

[0005] For another example, Chinese utility model patent application number CN202311142019.5 discloses a pipeline re-drainage structure and a construction method thereof. The pipeline re-drainage structure includes a first conversion well, a second conversion well, an old pipe and a new pipe. The first conversion well and the second conversion well are both provided with partition walls, which separate the first conversion well into a first sealing bin and a first water culvert, and separate the second conversion well into a second sealing bin and a second water culvert; the first end of the new pipe is connected to the first water culvert, and the second end is connected to the second water culvert. When the old pipe is re-drained, the old pipes in the first conversion well and the second conversion well are cut off, and the first sealing bin and the second sealing bin are sealed, so that the water in the pipeline flows into the new pipe only through the first water culvert, and the water in the new pipe flows into the second water culvert, and then flows into the downstream pipeline. Through this structure, the underground drainage pipeline can be re-drained without stopping the water supply, which will not cause a large-scale and long-term water outage and will not affect normal production and life. Utility Model Content

[0006] The utility model aims to overcome the defects in the prior art and provides a full-water box culvert relocation and docking box culvert and a construction method thereof.

[0007] The full-water box culvert relocation and docking box culvert comprises: a U-shaped steel casing, a row of holes, a ring beam, a new box culvert, an old box culvert, and an inspection shaft, wherein a ring beam is arranged in the middle of the old box culvert, a new box culvert is arranged on the side wall of the old box culvert, a U-shaped steel casing is arranged at the joint between the old box culvert and the new box culvert, a plurality of rows of holes are arranged on the side wall of the U-shaped steel casing, and an inspection shaft is arranged at the top opening of the new box culvert and the old box culvert.

[0008] Furthermore, the length, width and thickness of the U-shaped steel casing are 3000mm×1000mm×20mm respectively.

[0009] Furthermore, the diameter of the row of holes is 80mm-100mm.

[0010] Furthermore, a water-swellable waterstop strip is installed on the surface of the old box culvert side wall at the joint position with the new box culvert.

[0011] Furthermore, a hoisting hole is provided on the upper portion of the rear wall of the steel casing, and the diameter of the hoisting hole is 100 mm;

[0012] Furthermore, triangular blocks supporting the two side walls are arranged at the upper and lower parts of the two side walls of the steel casing to increase the connection rigidity of the two side walls.

[0013] Furthermore, the length, width and thickness of the triangular block are 500 mm×500 mm×20 mm respectively.

[0014] The utility model further provides a construction method for relocating and docking a full-water box culvert, comprising the following steps:

[0015] Step 1, synchronously raise the height of the ring beam on the top plate of the old box culvert, and connect the ring beam with the old box culvert by planting reinforcement;

[0016] Step 2: construct a new box culvert according to the design requirements;

[0017] Step 3: construct an inspection shaft on the upper part of the top plate of the new box culvert and the old box culvert;

[0018] Step 4: Make the row holes and hoisting holes on the top plate of the old box culvert in the inspection shaft;

[0019] Step 5, making and installing the U-shaped steel casing cofferdam;

[0020] Step 6, using a water pump to suck out the water in the steel casing cofferdam;

[0021] Step 7: At the joint between the new box culvert and the old box culvert, drill holes along the junction of the side wall and bottom plate of the old box culvert, remove the concrete of the side wall of the old box culvert structure and hoist out the inspection well.

[0022] Furthermore, in step 1, the height of the ring beam on the top plate of the old box culvert is raised to 80-100 cm, and the ring beam and the old box culvert are connected with C25HRB400 embedded steel bars. The embedded steel bars are anchored at a depth of 15d and a spacing of 20 cm. The height of the ring beam on the top plate of the old box culvert is raised simultaneously to avoid water overflow when the side walls of the old box culvert are demolished.

[0023] Furthermore, in step 2, a new box culvert structure is constructed according to the design requirements, including:

[0024] Step 2.1 Use C25HRB400 anchor bars to connect the new box culvert, the old box culvert bottom plate and the side wall. The anchor bar depth is 15d and the spacing is 20cm.

[0025] Step 2.2: Reserve a space of 0.8-1.2m on the top plates of the new and old box culverts as the cutting space for the side walls of the old box culverts, and cut the side walls of the old box culverts;

[0026] Step 2.3: Roughen the joints between the new and old box culverts. The surface of the joints is roughened to increase the contact area for subsequent construction and improve stability and firmness.

[0027] Step 2.4 Apply cement-based penetrating crystalline waterproof coating on the surface of the joint, with a dosage of 1.5kg / ㎡;

[0028] Step 2.5: Install a water-swellable waterstop on the surface of the joint. The installed water-swellable waterstop is preferably a putty-type water-swellable waterstop or a BW water-swellable waterstop.

[0029] Furthermore, in step 3, an inspection shaft is constructed on the upper part of the top plate of the new box culvert and the old box culvert, including:

[0030] Step 3.1 In order to facilitate the later maintenance and cleaning work, an inspection well needs to be built at the joint between the new box culvert and the old box culvert according to the design and specification requirements. The height of the inspection well structure is greater than the highest water level of the old box culvert during the flood season;

[0031] Step 3.2 The inspection well concrete structure is located above the new box culvert and the top plate of the old box culvert, connected to the steel bars of the new box culvert, and connected to the ring beam on the top plate of the old box culvert.

[0032] Furthermore, in step 4, the row holes and hoisting holes on the top plate of the old box culvert in the inspection shaft are constructed, including:

[0033] Step 4.1 Use a 100mm diameter water drill to drill through the top plate structure in the middle of the top plate of the old box culvert in the inspection shaft for hoisting the top plate of the old box culvert;

[0034] Step 4.2 Use a Ф80mm-100mm water drill to drill holes along the old box culvert top plate and the side wall of the inspection shaft to separate them, and then use the lifting holes to move the separated old box culvert top plate out of the inspection shaft.

[0035] Further, in step 5, a 30 mm thick U-shaped steel box cofferdam is manufactured and installed, including:

[0036] Step 5.1 Use a circular saw to cut the top plate of the old box culvert in the inspection well and lift it out. Process the U-shaped steel casing according to the size of the old box culvert top plate after cutting, and lift the processed U-shaped steel casing to the opening of the old box culvert top plate to form a U-shaped steel casing cofferdam to resist the water flow in the old box culvert, so as to facilitate the removal of the side wall of the new and old box culvert joint structure;

[0037] Step 5.2 Stack sand bags at the contact joint between the U-shaped steel box and the old box culvert structure to stop water and form a U-shaped steel box cofferdam.

[0038] Further, in step 6, a water pump is used to suck out the water in the steel casing cofferdam:

[0039] In order to ensure water-free operation during the construction of the docking of the new box culvert with the old box culvert structure, a water pump needs to be installed in the U-shaped steel casing to continuously pump out the accumulated water in the cofferdam of the U-shaped steel casing to ensure water-free operation during the construction of the docking of the side walls of the new box culvert and the old box culvert.

[0040] Furthermore, in step 7, at the joint of the new box culvert and the old box culvert, along the intersection of the side wall and the bottom plate, a water drill is used to drill holes, the concrete of the side wall of the old box culvert structure is removed and hoisted out, the new box culvert in the inspection well is connected with the old box culvert structure, the U-shaped steel casing is hoisted out, and the sewage in the old box culvert is smoothly diverted into the new box culvert, and finally a prefabricated cover plate is installed on the upper part of the inspection well.

[0041] Compared with the prior art in this technical field, the full water box culvert relocation and docking box culvert and the construction method thereof described in the utility model have the following superior technical effects:

[0042] 1. The full-water box culvert relocation and docking box culvert and its construction method described in the utility model realize the cutting of the box culvert top plate and the side wall for docking under dry working conditions, and use of U-shaped steel casing as a temporary cofferdam in the box culvert for rapid installation and removal, thus avoiding the safety risks of silting of the box culvert caused by artificially stacked sandbag cofferdams and underwater manual removal.

[0043] 2. The full water box culvert relocation docking box culvert and its construction method described in the utility model adopt a water drill in combination with a circular saw for cutting, which reduces the environmental pollution around the construction compared to the traditional manual or mechanical removal of the water box culvert. After the removal, the concrete slab is moved away as a whole to prevent concrete slag from falling into the box culvert and blocking the water flow.

[0044] 3. The full-water box culvert relocation and docking box culvert and its construction method described in the utility model adopt U-shaped steel casing box to block the box culvert water flow, which is easy to process, has a high recycling rate, and has a large steel plate rigidity, thereby ensuring the stability of the weir body.

[0045] 4. The full water box culvert relocation and docking construction method described in the utility model adopts a U-shaped steel casing box that can be reused, which shortens the construction period and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the full-water box culvert relocation and docking box culvert structure.

[0047] Figure 2 This is a schematic diagram of the cross-sectional structure of the full-water box culvert relocation and docking box culvert.

[0048] Figure 3 It is a schematic diagram of the three-dimensional structure of the U-shaped steel casing box for relocating the full-water box culvert and connecting the box culvert. DETAILED DESCRIPTION

[0049] Now combined with the instruction manual Figure 1-3 , a specific embodiment of the full water box culvert relocation and docking box culvert and its construction method described in the utility model is introduced in detail.

[0050] like Figure 1-3 As shown, the full-water box culvert relocation and docking box culvert comprises: a U-shaped steel casing 1, A100mm water drill row holes 2, a ring beam 3, a new box culvert 4, an old box culvert 5, and an inspection shaft 6, wherein a ring beam 3 is arranged in the middle of the old box culvert 5, a new box culvert 4 is arranged on the side wall of the old box culvert 5, a U-shaped steel casing 1 is arranged at the joint between the old box culvert 5 and the new box culvert 4, a plurality of row holes 2 are arranged on the side wall of the U-shaped steel casing 1, and an inspection shaft 6 is arranged at the top opening of the new box culvert and the old box culvert.

[0051] Furthermore, the length, width and thickness of the U-shaped steel casing 1 are 3000mm*1000mm20*mm respectively.

[0052] Furthermore, the diameter of the row of holes 2 is 80 mm-100 mm.

[0053] Furthermore, a water-swellable waterstop strip is installed on the surface of the side wall of the old box culvert 5 at the joint position of the new box culvert 4 .

[0054] Furthermore, a hoisting hole 7 is provided on the upper portion of the rear wall of the steel casing 1, and the diameter of the hoisting hole 7 is 100 mm.

[0055] Furthermore, triangular blocks 8 for supporting the two side walls are arranged at the upper and lower parts of the two side walls of the steel casing 1 to increase the connection rigidity of the two side walls.

[0056] Furthermore, the length, width and thickness of the triangular block 8 are 500 mm×500 mm×20 mm respectively.

[0057] The construction method for connecting a full-water box culvert to a box culvert according to the utility model comprises the following steps:

[0058] The construction method for relocating a full-water box culvert to a box culvert includes the following steps:

[0059] Step 1: Increase the height of the ring beam on the top plate of the old box culvert, and connect the ring beam with the old box culvert by planting reinforcement:

[0060] The height of the ring beam on the top plate of the old box culvert is increased to 80-100cm. The ring beam and the old box culvert are connected with C25HRB400 embedded steel bars. The embedded steel bars are anchored to a depth of 15d (steel bar diameter) and a spacing of 20cm.

[0061] Step 2: construct a new box culvert according to the design requirements:

[0062] Step 2.1 Use C25HRB400 anchor bars to connect the new box culvert, the old box culvert bottom plate and the side wall. The anchor bar depth is 15d and the spacing is 20cm.

[0063] Step 2.2: Reserve a space of 0.8-1.2m on the top plates of the new and old box culverts as the cutting space for the side walls of the old box culverts, and cut the side walls of the old box culverts;

[0064] Step 2.3: Roughen the joints between the new and old box culverts. The surface of the joints is roughened to increase the contact area for subsequent construction and improve stability and firmness.

[0065] Step 2.4 Apply cement-based penetrating crystalline waterproof coating on the surface of the joint. The amount of cement-based penetrating crystalline waterproof coating is 1.5kg / ㎡;

[0066] Step 2.5: Install a water-swelling waterstop strip on the surface of the joint. The installed water-swelling waterstop strip is preferably a putty-type water-swelling waterstop strip or a BW water-swelling waterstop strip;

[0067] Step 3: construct an inspection shaft on the top of the new box culvert and the old box culvert:

[0068] Step 3.1 In order to facilitate the later maintenance and cleaning work, an inspection well needs to be built at the joint between the new box culvert and the old box culvert according to the design and specification requirements. The height of the inspection well structure is greater than the highest water level of the old box culvert during the flood season;

[0069] Step 3.2 The inspection well concrete structure is located above the new box culvert and the top plate of the old box culvert, connected to the steel bars of the new box culvert, and connected to the ring beam on the top plate of the old box culvert;

[0070] Step 4: Check the row holes and lifting holes on the top plate of the old box culvert in the shaft:

[0071] Step 5: Make and install the U-shaped steel box cofferdam:

[0072] Step 5.1 To ensure that there is no water during the docking construction of the new box culvert and the old box culvert structure, a water pump needs to be installed in the U-shaped steel casing to continuously pump out the water accumulated in the cofferdam of the U-shaped steel casing to ensure that there is no water during the docking construction of the side walls of the new box culvert and the old box culvert;

[0073] Step 5.2 Use a circular saw to cut the old box culvert top plate in the inspection well and lift it out. Process the U-shaped steel casing according to the size of the old box culvert top plate after cutting, and lift the processed U-shaped steel casing to the opening of the old box culvert top plate to form a U-shaped steel casing cofferdam to resist the water flow in the old box culvert, so as to facilitate the removal of the side wall of the new and old box culvert joint structure;

[0074] Step 5.3 Stack sand bags at the contact joint between the U-shaped steel casing and the old box culvert structure to stop water and form a U-shaped steel casing cofferdam;

[0075] Step 6: Use a water pump to suck out the water in the steel casing cofferdam:

[0076] In order to ensure that there is no water during the construction of the new box culvert and the old box culvert structure, a water pump needs to be installed in the U-shaped steel casing to continuously pump out the water accumulated in the cofferdam of the U-shaped steel casing to ensure that there is no water during the construction of the side wall connection between the new box culvert and the old box culvert;

[0077] Step 7, at the joint of the new box culvert and the old box culvert, drill holes along the junction of the side wall and bottom plate of the old box culvert, use a water drill to drill holes, remove the concrete of the side wall of the old box culvert structure and lift it out, and complete the docking of the new box culvert and the old box culvert structure in the inspection well. Lift out the U-shaped steel casing, and the sewage in the old box culvert is smoothly diverted to the new box culvert. Finally, install the prefabricated cover plate on the top of the inspection well.

[0078] In this embodiment, in step 4, at the box culvert joint, a hole arrangement operation is performed along the junction of the side wall and the bottom plate, the reinforced concrete unloading blocks are removed and adjusted in batches, the U-shaped steel casing is hoisted out, an inspection well is constructed, and the upper cover plates of the new box culvert and the old box culvert ring beam are closed.

[0079] In this embodiment, in step 5, the U-shaped steel casing cofferdam is 30 mm thick to ensure the safety of the U-shaped steel casing cofferdam.

[0080] In this embodiment, in step 6, a water pump is used to suck out the accumulated water in the steel casing cofferdam.

[0081] The present invention is not limited to the above-mentioned embodiments. Without departing from the essential content of the present invention, any deformation, improvement, and substitution that can be thought of by those skilled in the art shall fall within the protection scope of the present invention.

Claims

1. A full water box culvert relocation and docking box culvert, characterized in that: include: U-shaped steel box, rows of holes, ring beam, new box culvert, old box culvert, inspection shaft, wherein a ring beam is set in the middle of the old box culvert, a new box culvert is set on the side wall of the old box culvert, a U-shaped steel box is set at the joint of the old box culvert and the new box culvert, a number of rows of holes are set on the side wall of the U-shaped steel box, and the inspection shaft is set at the top opening of the new box culvert and the old box culvert.

2. The full water box culvert relocation and docking box culvert according to claim 1 is characterized in that: A water-swellable waterstop strip is installed on the surface of the old box culvert's side wall where the new box culvert is connected.

3. The full water box culvert relocation and docking box culvert according to claim 1 is characterized in that: The upper and lower parts of the two side walls of the steel casing are provided with triangular blocks for increasing the connection rigidity of the two side walls, and the length, width and thickness of the triangular blocks are 500mm×500mm×20mm respectively.

4. The full water box culvert relocation and docking box culvert according to claim 1 is characterized in that: A hoisting hole is arranged on the upper portion of the rear wall of the U-shaped steel casing, and the diameter of the hoisting hole is 80mm-100mm.

5. The full water box culvert relocation and docking box culvert according to claim 1 is characterized in that: The diameter of the row of holes is 100 mm.

6. The full water box culvert relocation and docking box culvert according to claim 1 is characterized in that: The length, width and thickness of the U-shaped steel casing are 3000mm×1000mm×20mm respectively.

Images