Construction method of guide wall and underground diaphragm wall

Abstract

The invention relates to the technical field of guide wall construction, and discloses a guide wall and a construction method of an underground diaphragm wall. The guide wall comprises a plurality of guide wall units and a counterweight part. The adjacent guide wall units are detachably connected, the guide wall units are provided with accommodating cavities and through holes, and the through holes are communicated with the accommodating cavities; and the counterweight piece is suitable for entering the accommodating cavity through the through hole. According to the guide wall, the problems that an existing concrete guide wall is complex in construction and cannot be recycled are solved, the problems that an existing steel guide wall is prone to displacement and deformation, and construction safety is affected are solved, and the guide wall is small in conveying and construction difficulty, high in structural strength, capable of being recycled after construction and achieving green construction and extremely high in popularization value.

Description

Technical Field

[0001] The invention relates to the technical field of guide wall construction, and in particular to a construction method of a guide wall and an underground continuous wall. Background Art

[0002] Before the underground continuous wall is dug into the trench, a guide wall must be constructed first. The guide wall is the key to ensuring the accurate position of the underground continuous wall and the quality of the trench. During construction, the guide wall often bears the static and dynamic loads of steel cages, conduits for pouring concrete, drilling rigs, etc. Therefore, it must be carefully designed and constructed before the formal construction of the underground continuous wall can be carried out.

[0003] An existing guide wall is made of concrete, which is usually cast in situ at the construction site. However, the construction progress of this concrete guide wall is slow, the cast-in-situ reinforced concrete cannot be reused, the cost is high, and it needs to be demolished after the construction is completed, and the process is cumbersome.

[0004] Another existing guide wall is made of steel, but this steel guide wall is usually hollow in design, resulting in a small deadweight and low structural strength. When subjected to vibration and load, it is prone to displacement and deformation, affecting construction safety and easily slowing down construction progress. Summary of the invention

[0005] In view of this, the present invention provides a guide wall and an underground continuous wall construction method to solve the problem that the existing concrete guide wall cannot be reused and the steel guide wall is prone to displacement and deformation.

[0006] In a first aspect, the present invention provides a guide wall, comprising:

[0007] A plurality of wall guide units, adjacent to each other being detachably connected, each wall guide unit being provided with a receiving cavity and a through hole, the through hole being in communication with the receiving cavity;

[0008] The counterweight is adapted to enter the accommodating cavity through the through hole.

[0009] Beneficial effects: The guide wall includes several guide wall units and counterweights, and adjacent guide wall units are detachably connected. When constructing the guide wall, the modular guide wall units can greatly reduce the space occupied by transportation. The guide wall units that have been manufactured in the factory are directly transported to the construction site as needed, and the guide wall units are assembled on site, so the construction is simple and fast. In addition, a accommodating cavity and a through hole are provided on the guide wall unit, and the counterweight can enter the accommodating cavity through the through hole. The counterweight is carried out on site to reduce the dead weight of the guide wall unit, and the difficulty of transportation and construction is reduced. The weight of the guide wall unit during construction is increased by the counterweight, so that the guide wall unit can be more stable after assembly, so that when the guide wall is subjected to vibration and load in subsequent construction, the possibility of displacement and deformation is effectively reduced, thereby ensuring the stability of the guide wall, and then ensuring the construction safety and progress. After the construction of the underground continuous wall is completed, the guide wall unit can be recycled. The guide wall not only solves the problem of complex construction and non-recyclability of existing concrete guide walls, but also solves the problem of easy displacement and deformation of existing steel guide walls, which affects construction safety. The guide wall is easy to transport and construct, has high structural strength, can be recycled after construction, realizes green construction, and has great promotion value.

[0010] In an optional embodiment, a groove is provided at one end of the guide wall unit, and a protrusion is provided at the other end of the guide wall unit, and the protrusion is suitable for being inserted into the groove. The ends of the guide wall unit provided with the groove or the protrusion are provided with pin holes passing through the groove or the protrusion, and when the protrusions of adjacent guide wall units are inserted into the groove, the two pin holes are coaxial, and the pin shafts are inserted into the two pin holes.

[0011] Beneficial effect: When the guide wall units are spliced, they are connected through grooves and protrusions. By inserting the protrusions into the grooves, the connection difficulty of the guide wall units can be reduced. After the initial connection of two adjacent guide wall units is completed, the pin shafts are inserted into two coaxial pin holes to preliminarily position the two adjacent guide wall units, which is convenient for subsequent assembly and effectively reduces the difficulty of assembling the guide wall.

[0012] In an optional embodiment, the side end surface of the wall guide unit which is perpendicular to both the horizontal plane and the splicing direction is L-shaped or rectangular.

[0013] Beneficial effect: By setting the side end faces of the guide wall unit perpendicular to the horizontal plane and the splicing direction to be L-shaped or rectangular, the guide wall units can be formed into different shapes to meet construction needs. The guide wall units with L-shaped end faces can prevent gaps from occurring at the corners of the combined guide wall units, making the connection tight and the structural strength high. Moreover, when the guide wall is recycled after the construction is completed, it is easy to disassemble, thereby improving construction efficiency.

[0014] In an optional embodiment, several of the guide wall units are connected in sequence to form a guide wall assembly, and several of the guide wall assemblies are detachably connected in sequence to form a guide wall body. Adjacent guide wall bodies are arranged in parallel and spaced apart to form grooves, or adjacent guide wall bodies are arranged vertically and detachably connected.

[0015] Beneficial effect: Guide wall components are formed by guide wall units, and various forms of guide walls are formed by different connections between the guide wall components. The modular design makes the on-site assembly of the guide wall simple and quick, and also makes the structure of the guide wall diverse and can be combined according to the needs of on-site construction, thereby improving the applicability of the guide wall.

[0016] In an optional embodiment, it further comprises a wall guide panel, wherein the wall guide panel is arranged on the top surface of the wall guide body and the side surface relative to another wall guide body, and the wall guide panel is detachably connected to the wall guide body.

[0017] Beneficial effect: The end faces of the guide wall that may come into contact with other construction equipment are protected by the guide wall panels to prevent the guide wall units from being damaged. At the same time, the connection strength between the guide wall units and the guide wall components can be strengthened, making the structural strength of the guide wall body higher and preventing deformation of the guide wall.

[0018] In an optional embodiment, the through hole is provided on the wall guide panel on the top surface.

[0019] Beneficial effect: The hole provided on the top surface makes it convenient for construction workers to insert the counterweight into the accommodating cavity, thereby reducing the difficulty of construction.

[0020] In an optional embodiment, a side support is further included, wherein the side support is arranged between two parallel and spaced guide wall bodies and at the end of the guide wall body, and the top surface of the side support is flush with the top surface of the guide wall body.

[0021] Beneficial effect: The hole provided on the top surface makes it convenient for construction workers to insert the counterweight into the accommodating cavity, thereby reducing the difficulty of construction.

[0022] In an optional embodiment, it further includes an inner support, and the inner support is arranged between two parallel and spaced guide wall bodies.

[0023] Beneficial effect: By setting side supports, force conduction can be formed between the two parallel and spaced guide wall bodies. The two guide wall bodies can provide support to each other, ensuring that the guide wall can be close to the soil during construction without tipping over, while increasing the overall structural strength of the guide wall.

[0024] In an optional embodiment, the wall guide unit is further provided with a hanging hole, and the hanging hole is suitable for connecting with a hanging device.

[0025] Beneficial effect: The lifting holes can be connected to the lifting equipment, and the guide wall unit can be easily transported by the lifting equipment, making it convenient for construction workers to align and assemble.

[0026] In a second aspect, the present invention further provides a construction method of an underground continuous wall, which uses the above-mentioned guide wall for construction, comprising:

[0027] Transport the guide wall units to the construction site for assembly;

[0028] Excavation of foundation trench;

[0029] Place the assembled guide wall unit into the base groove;

[0030] Place the counterweight into the accommodating cavity through the through hole;

[0031] Re-measure the elevation of the guide wall;

[0032] After confirmation, the underground continuous wall slotting construction will be carried out;

[0033] After hoisting out the guide wall, move it to the next foundation trench and repeat the operation in a cycle.

[0034] Beneficial effects: The underground continuous wall construction method is constructed through the above-mentioned guide wall. The guide wall unit is easy to transport and saves space. The assembly after transportation to the site is simple and quick. It can also be combined according to construction needs. After the assembly, the foundation trench is excavated on site, and the assembled guide wall unit is placed in the foundation trench. The construction is simple and convenient. After the guide wall unit is set up, the counterweight is placed in the receiving hole. The counterweight is used to increase the overall deadweight of the guide wall, thereby increasing the structural strength and stability of the guide wall. After the counterweight is set up, the overall setting of the guide wall is completed. The elevation of the guide wall is re-measured to ensure the correct setting position of the guide wall. After confirmation, the slotting construction of the underground continuous wall can be started. After the construction is completed, the guide wall can be hoisted out and moved to the next foundation trench for cyclic operation, or it can be disassembled and recycled and moved to another construction in need. This underground continuous wall construction method not only solves the problems of slow construction progress, high construction cost, environmental pollution, etc. of traditional cast-in-place reinforced concrete guide walls, realizes standardized production and recycling; it also solves the problem that existing steel guide walls are prone to displacement and deformation. During the entire installation and disassembly process, only excavators need to cooperate with manual labor, which improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a front view of a wall guide assembly according to an embodiment of the present invention;

[0037] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0038] Figure 3 A top view of a guide wall body according to an embodiment of the present invention;

[0039] Figure 4 The figure is a side view of a guide wall body according to an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 1. wall guide unit; 11. through hole; 12. groove; 13. protrusion;

[0042] 2. Wall guide assembly;

[0043] 3. Guide wall body

[0044] 4. Guide wall panel;

[0045] 5. Side support;

[0046] 6. Internal support;

[0047] 7. Hanging hole. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0049] Combine the following Figures 1 to 4 , describing an embodiment of the construction method of the guide wall and underground continuous wall of the present invention.

[0050] According to an embodiment of the present invention, on the one hand, a guide wall is provided, comprising a plurality of guide wall units 1 and a counterweight. Adjacent guide wall units 1 are detachably connected, and the guide wall units 1 are provided with a receiving cavity and a through hole 11, and the through hole 11 is connected to the receiving cavity; the counterweight is suitable for entering the receiving cavity through the through hole 11.

[0051] The guide wall provided in this embodiment includes a plurality of guide wall units 1 and counterweights. Adjacent guide wall units 1 are detachably connected. When constructing the guide wall, the modular guide wall units 1 can greatly reduce the space occupied by transportation. The guide wall units 1 manufactured in the factory can be directly transported to the construction site as needed, and the guide wall units 1 can be assembled on site, so that the construction is simple and quick. In addition, a receiving cavity and a through hole 11 are provided on the guide wall unit 1, and the counterweight can enter the receiving cavity through the through hole 11. The counterweight is performed on site to reduce the dead weight of the guide wall unit 1, and the difficulty of transportation and construction is reduced. The weight of the guide wall unit 1 during construction is increased by the counterweight, so that the guide wall unit 1 can be more stable after assembly, so that when the guide wall is subjected to vibration and load in subsequent construction, the possibility of displacement and deformation can be effectively reduced, thereby ensuring the stability of the guide wall, and further ensuring the construction safety and progress. After the construction of the underground continuous wall is completed, the guide wall unit 1 can be recycled. The guide wall not only solves the problem of complex construction and non-recyclability of existing concrete guide walls, but also solves the problem of easy displacement and deformation of existing steel guide walls, which affects construction safety. The guide wall is easy to transport and construct, has high structural strength, can be recycled after construction, realizes green construction, and has great promotion value.

[0052] In one embodiment, the guide wall unit 1 is made of steel. The guide wall unit 1 made of steel has a high structural strength and is not easily deformed or damaged during construction.

[0053] In one embodiment, the counterweight is sand and gravel. It is convenient and quick to use sand and gravel as the counterweight, and it can be collected at the construction site. The sand and gravel can be easily sent into the accommodating cavity through the through hole 11, and it is also convenient to pour out from the through hole 11 after the construction is completed. The construction difficulty is low, and it is not easy to shake after filling. The center of gravity is stable, ensuring the stability of the center of gravity of the guide wall. In other embodiments, the counterweight can also be an iron block, a prefabricated counterweight block or water.

[0054] In one embodiment, the through hole 11 is square, and its size is 200 mm×200 mm. In other embodiments, the through hole 11 may also be circular.

[0055] In one embodiment, a groove 12 is provided at one end of the guide wall, and a protrusion 13 is provided at the other end of the guide wall. The protrusion 13 is suitable for being inserted into the groove 12. The end of the guide wall provided with the groove 12 or the protrusion 13 is provided with a pin hole penetrating the groove 12 or the protrusion 13. When the protrusion 13 of the adjacent guide wall units 1 is inserted into the groove 12, the two pin holes are coaxial, and the pin shaft is inserted into the two pin holes. When the guide wall units 1 are spliced, they are connected through the groove 12 and the protrusion 13. By inserting the protrusion 13 into the groove 12, the connection difficulty of the guide wall units 1 can be reduced. After the initial connection of the two adjacent guide wall units 1 is completed, the pin shaft is inserted into the two coaxial pin holes to preliminarily position the two adjacent guide wall units 1, which is convenient for subsequent assembly and effectively reduces the assembly difficulty of the guide wall.

[0056] In one embodiment, the side end surface of the guide wall unit 1 that is perpendicular to the horizontal plane and the splicing direction is L-shaped or rectangular. By setting the side end surface of the guide wall unit 1 that is perpendicular to the horizontal plane and the splicing direction to be L-shaped or rectangular, the guide wall unit 1 can be formed into different shapes to meet construction needs. The guide wall unit 1 with an L-shaped end surface can prevent gaps from being generated at the corners of the assembled guide wall unit 1, making the connection tight and the structural strength high. Moreover, when the guide wall is recycled after the construction is completed, it is easy to disassemble, thereby improving construction efficiency.

[0057] In one embodiment, a plurality of guide wall units 1 are sequentially connected to form a guide wall assembly 2, and a plurality of guide wall assemblies 2 are sequentially detachably connected to form a guide wall body 3. Adjacent guide wall bodies 3 are arranged in parallel and spaced apart to form a groove, or adjacent guide wall bodies 3 are arranged vertically and detachably connected. The guide wall assembly 2 is formed by the guide wall unit 1, and various forms of guide walls are formed by different connections between the guide wall assemblies 2. The modular design makes the on-site assembly of the guide wall simple and quick, and also makes the structure of the guide wall diverse, which can be combined according to the needs of on-site construction, thereby improving the applicability of the guide wall.

[0058] In one embodiment, the guide wall assembly 2 is formed by combining L-shaped guide wall units 1 to form an L-shaped guide wall assembly 2. In addition to being connected by pins, the guide wall units 1 are also connected by bolts to enhance the connection strength and facilitate disassembly.

[0059] In one embodiment, the guide wall further comprises a guide wall panel 4, which is arranged on the top surface of the guide wall body 3 and the side surface relative to another guide wall body 3, and the guide wall panel 4 is detachably connected to the guide wall body 3. The guide wall panel 4 protects the end surface of the guide wall that may contact with other construction equipment to prevent the guide wall unit 1 from being damaged, and at the same time, the connection strength between the guide wall units 1 and the guide wall assemblies 2 can be strengthened, so that the structural strength of the guide wall body 3 is higher, and deformation of the guide wall is prevented.

[0060] In one embodiment, the guide wall panel 4 is supported by a 12 mm manganese plate, which has high structural strength and is wear-resistant.

[0061] In one embodiment, the through hole 11 is provided on the top wall guide panel 4. The through hole 11 provided on the top surface facilitates the construction personnel to put the counterweight into the accommodating cavity, thereby reducing the construction difficulty.

[0062] In one embodiment, the guide wall units 1, the guide wall assemblies 2, and the guide wall body 3 and the panel are all detachably connected by bolts and nuts, wherein the bolts and nuts connecting the guide wall body 3 and the panel are welded to the panel to improve the connection strength and reduce mortar leakage, and a round tube is sleeved around the nut to further prevent mortar from entering.

[0063] In one embodiment, a side support 5 is further included, and the side support 5 is arranged between two parallel and spaced guide wall bodies 3 and at the end of the guide wall body 3, and the top surface of the side support 5 is flush with the top surface of the guide wall body 3. By arranging the side support 5, force conduction can be formed between the two parallel and spaced guide wall bodies 3, and the two guide wall bodies 3 can provide support force to each other, ensuring that the guide wall can be close to the soil during construction without overturning, and at the same time increasing the overall structural strength of the guide wall.

[0064] In one embodiment, the guide wall further includes an inner support 6, which is disposed between two parallel and spaced guide wall bodies 3. The inner support 6 can support the middle of the guide wall body 3, and when the two assembled guide wall bodies 3 are hoisted, the stability of the overall hoisting can be increased, and shaking and collision during the hoisting process can be reduced.

[0065] In one embodiment, the inner support 6 is detachably connected to the guide wall body 3. Before the guide wall construction is completed, the inner support 6 supports the guide wall body 3. The inner support 6 can support the middle part of the guide wall body 3. When the two assembled guide wall bodies 3 are hoisted, the stability of the overall hoisting can be increased, and shaking and collision during the hoisting process can be reduced. After the guide wall hoisting is completed, the inner support 6 needs to be disassembled to expose the groove between the two parallel and spaced guide wall bodies 3, so that the equipment can be constructed in the groove.

[0066] In one embodiment, the wall guide unit 1 is further provided with a hanging hole 7, which is suitable for connecting with a hanging device. The hanging hole 7 can be connected with the hanging device, and the wall guide unit 1 can be easily transported by the hanging device, so that the construction workers can align and assemble it conveniently.

[0067] In one embodiment, a hanging hole 7 is provided on the top surface of the wall guide unit 1, and a hanging hook is provided in the hanging hole 7, which can be connected to a lifting device. Setting the hanging hook in the hanging hole 7 is beautiful, simple, and highly safe, thus avoiding damage to equipment or construction personnel during construction.

[0068] In one embodiment, the hanging hole 7 is square, and the size of the hanging hole 7 is 300 mm x 300 mm. In other embodiments, the hanging hole 7 may also be circular.

[0069] According to an embodiment of the present invention, on the other hand, a construction method of an underground continuous wall is also provided, which uses the above-mentioned guide wall for construction, including: transporting the guide wall unit 1 to the construction site for assembly; excavating a foundation trench; placing the assembled guide wall unit 1 into the foundation trench; placing the counterweight into the accommodating cavity through the through hole 11; re-measuring the elevation of the guide wall; performing underground continuous wall trenching construction after confirmation; hoisting the guide wall and moving it to the next foundation trench, and repeating the operation.

[0070] The underground continuous wall construction method provided in this embodiment is constructed through the above-mentioned guide wall. The guide wall unit 1 is easy to transport and saves space. The assembly when transported to the site is simple and quick. It can also be combined according to construction needs. After the assembly is completed, the foundation trench is excavated on site, and the assembled guide wall unit 1 is placed in the foundation trench. The construction is simple and convenient. After the guide wall unit 1 is set, the counterweight is placed in the receiving hole. The counterweight increases the overall deadweight of the guide wall, thereby increasing the structural strength and stability of the guide wall. After the counterweight is set, the overall setting of the guide wall is completed. The elevation of the guide wall is re-measured to ensure the correct setting position of the guide wall. After confirmation, the grooving construction of the underground continuous wall can be started. After the construction is completed, the guide wall can be hoisted out and moved to the next foundation trench for cyclic operation, or it can be disassembled and recycled, and then moved to another construction in need. The underground continuous wall construction method provided in this embodiment not only solves the problems of slow construction progress, high construction cost, environmental pollution, etc. of traditional cast-in-place reinforced concrete guide walls, and realizes standardized production and recycling; it also solves the problem that existing steel guide walls are prone to displacement and deformation. During the entire installation and disassembly process, only excavators need to cooperate with manual labor, which improves construction efficiency.

[0071] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A guide wall, characterized in that: include: A plurality of wall guide units (1), wherein adjacent wall guide units (1) are detachably connected, and each wall guide unit (1) is provided with a receiving cavity and a through hole (11), wherein the through hole (11) is in communication with the receiving cavity; The counterweight is suitable for entering the accommodating cavity through the through hole (11).

2. The guide wall according to claim 1, characterized in that: A groove (12) is provided at one end of the wall guide unit (1), and a protrusion (13) is provided at the other end of the wall guide unit (1); the protrusion (13) is suitable for being inserted into the groove (12); the end of the wall guide unit (1) provided with the groove (12) or the protrusion (13) is provided with a pin hole penetrating the groove (12) or the protrusion (13); when the protrusions (13) of adjacent wall guide units (1) are inserted into the groove (12), the two pin holes are coaxial, and the pin shaft is inserted into the two pin holes.

3. The guide wall according to claim 1, characterized in that: The side end surface of the wall guide unit (1) which is perpendicular to both the horizontal plane and the splicing direction is L-shaped or rectangular.

4. The guide wall according to claim 3, characterized in that: A plurality of the guide wall units (1) are connected in sequence to form a guide wall assembly (2), and a plurality of the guide wall assemblies (2) are detachably connected in sequence to form a guide wall body (3). Adjacent guide wall bodies (3) are arranged in parallel and spaced apart to form a groove, or adjacent guide wall bodies (3) are arranged vertically and detachably connected.

5. The guide wall according to claim 4, characterized in that: It also comprises a wall guide panel (4), which is arranged on the top surface of the wall guide body (3) and the side surface relative to another wall guide body (3), and the wall guide panel (4) is detachably connected to the wall guide body (3).

6. The guide wall according to claim 5, characterized in that: The through hole (11) is arranged on the top wall guide panel (4).

7. The guide wall according to claim 4, characterized in that: It also comprises a side support (5), which is arranged between two parallel and spaced guide wall bodies (3) and at the end of the guide wall body (3), and the top surface of the side support (5) is flush with the top surface of the guide wall body (3).

8. The guide wall according to claim 4, characterized in that: It also comprises an inner support (6), wherein the inner support (6) is arranged between two guide wall bodies (3) arranged in parallel and at intervals.

9. The guide wall according to any one of claims 1 to 8, characterized in that: The wall guide unit (1) is also provided with a hanging hole (7), and the hanging hole (7) is suitable for connecting with a hanging device.

10. A method for constructing an underground continuous wall, using the guide wall according to any one of claims 1 to 9 for construction, characterized in that: include: transporting the guide wall unit (1) to the construction site for assembly; Excavation of foundation trench; Place the assembled guide wall unit (1) into the base groove; Place the counterweight into the accommodating cavity through the through hole (11); Re-measure the elevation of the guide wall; After confirmation, the underground continuous wall slotting construction will be carried out; After hoisting out the guide wall, move it to the next foundation trench and repeat the operation in a cycle.

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