Mechanical underground diaphragm wall groove wall reinforcing system and using method

Abstract

The invention provides a mechanical underground diaphragm wall groove wall reinforcing system and a using method. The mechanical underground diaphragm wall groove wall reinforcing system comprises a mechanical groove wall reinforcing male groove system and a mechanical groove wall reinforcing female groove system. The male groove system and the female groove system each comprise a continuous wall stabilizing body, and a supporting structure is arranged in each continuous wall stabilizing body. The cutting device is movably arranged on the periphery of the continuous wall stabilizing main body and is supported by the side wall of the continuous wall stabilizing main body; the driving device is arranged on the continuous wall stabilizing main body, and the output end of the driving device is connected with the cutting device; wherein the bottom of the supporting structure of the mechanical groove wall reinforcing male groove system is flush with the bottom of the continuous wall stabilizing main body, and the height of the bottom of the supporting structure of the mechanical groove wall reinforcing female groove system is flush with the top of the underground continuous wall. The method replaces the protection effect of reinforcing soil bodies on the two sides of a traditional guide wall and a groove section on the groove section of the underground continuous wall, and has the advantages of being capable of achieving standardized continuous construction, low in overall cost, short in construction period, recyclable and environmentally friendly.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit engineering, and particularly relates to a mechanical underground diaphragm wall trench wall reinforcement system and a using method thereof. Background Art

[0002] In subway foundation pit engineering, the underground diaphragm wall is an important retaining structure, and its construction quality is directly related to the safety of the foundation pit. At present, the conventional trench wall reinforcement in the industry generally adopts the method of adding a three-axis mixing pile or a high-pressure jet grouting pile to the guide wall. This traditional process has many technical limitations. First, the pre-construction link is complex. It is necessary to first carry out the reinforcement construction on both sides of the trench wall, then carry out the guide wall construction, and wait for the guide wall structure to reach the concrete strength before the trench can be excavated. The connection of processes requires strict requirements and the overall construction period is long. Second, the construction of the three-axis mixing pile requires large-scale special equipment, and the jet grouting pile consumes a large amount of cement slurry. Both of these processes result in high construction costs.

[0003] Based on the above situation, the present invention proposes a mechanical underground diaphragm wall trench wall reinforcement system and a using method thereof, which can effectively solve the above problems. Summary of the Invention

[0004] Aiming at the deficiencies existing in the prior art, the first object of the present invention is to provide a mechanical underground diaphragm wall trench wall reinforcement system. The present invention replaces the protection effect of the traditional guide wall and the reinforcement of the soil on both sides of the trench segment on the underground diaphragm wall trench segment, and has the advantages of standardized continuous construction, low overall cost, short construction period, recyclability, and environmental protection.

[0005] In a first aspect, an embodiment of the present invention provides a mechanical underground diaphragm wall trench wall reinforcement system, including a mechanical trench wall reinforcement male groove system and a mechanical trench wall reinforcement female groove system;

[0006] Both the mechanical trench wall reinforcement male groove system and the mechanical trench wall reinforcement female groove system include:

[0007] A diaphragm wall stability main body, and a support structure is arranged inside the diaphragm wall stability main body;

[0008] A cutting device, which is movably arranged on the outer periphery of the diaphragm wall stability main body and is supported by the side wall of the diaphragm wall stability main body;

[0009] A driving device, which is arranged on the diaphragm wall stability main body, and its output end is connected to the cutting device;

[0010] Wherein, the bottom of the support structure of the mechanical trench wall reinforcement male groove system is flush with the bottom of the diaphragm wall stability main body, and the bottom height of the support structure of the mechanical trench wall reinforcement female groove system is flush with the top of the underground diaphragm wall.

[0011] In one embodiment, the diaphragm wall stabilizing body includes two retaining plates arranged in parallel at intervals.

[0012] In one embodiment, the length of the retaining plate is not less than the depth to be reinforced of the diaphragm wall trench wall.

[0013] In one embodiment, the support structure includes two support rods vertically and spacedly arranged within the diaphragm wall stabilizing body.

[0014] In one embodiment, the upper parts of the internal support structures of the mechanical trench wall reinforcement male groove system and the mechanical trench wall reinforcement female groove system both extend above the top of the diaphragm wall stabilizing body.

[0015] In one embodiment, the driving device includes a synchronous motor arranged between the two retaining plates. The output shafts of the synchronous motor are respectively connected to two driving wheels, and the two driving wheels are correspondingly arranged on the two retaining plates.

[0016] In one embodiment, multiple groups of driven components are arranged on the diaphragm wall stabilizing body. Each group of driven components is provided with two driven wheels, and they are correspondingly arranged on the two retaining plates.

[0017] In one embodiment, sickle crawlers are arranged on the outer peripheral side walls of the two retaining plates. The sickle crawlers are connected to the driving wheels and the driven wheels on the corresponding retaining plates through meshing transmission.

[0018] In one embodiment, accommodation grooves are formed on the peripheral side walls of the two retaining plates. Multiple freely rotatable balls are embedded in each accommodation groove. Part of the spherical surface of the balls protrudes outside the accommodation groove and forms a rolling contact fit with the inner surface of the corresponding sickle crawler.

[0019] Second, the second object of the present invention is also to provide a usage method of a mechanical diaphragm wall trench wall reinforcement system. Pre-fabricate any one of the above-mentioned mechanical trench wall reinforcement male groove systems and mechanical trench wall reinforcement female groove systems. The usage method includes the following steps:

[0020] S1. Site preparation: Complete the leveling of the construction site and perform pre-construction positioning on the diaphragm wall.

[0021] S2. Installation of the mechanical trench wall reinforcement male groove system: Lift and install the mechanical trench wall reinforcement male groove system to the designed position of the first diaphragm wall; Start the driving device, cut the soil through the sickle crawler, and ensure that the mechanical trench wall reinforcement male groove system sinks evenly to the depth required for the diaphragm wall retaining until the driving device is turned off.

[0022] S3. Construction of the first diaphragm wall: Conduct the trench excavation, reinforcement cage lowering, and concrete pouring of the diaphragm wall within the mechanical trench wall reinforcement public groove system; after the diaphragm wall is poured, hoist and pull out the mechanical trench wall reinforcement public groove system.

[0023] S4. Construction of adjacent diaphragm walls: Hoist the mechanical trench wall reinforcement public groove system to the designed position of the second diaphragm wall, and reserve the installation space for the mechanical trench wall reinforcement female groove system between adjacent wall segments; repeat the sinking operation in step S2 and the construction steps in step S3.

[0024] S5. Installation of the mechanical trench wall reinforcement female groove system: After the diaphragm wall corresponding to the mechanical trench wall reinforcement public groove system reaches the initial strength, hoist the mechanical trench wall reinforcement female groove system to the installation space between adjacent wall segments; start the drive motor to drive the sickle track to cut the soil, reach the required depth of the diaphragm wall protection, and then turn off the drive motor.

[0025] S6. Construction of the third diaphragm wall: Conduct the trench excavation, reinforcement cage lowering, and concrete pouring of the third diaphragm wall within the mechanical trench wall reinforcement female groove system; after the third diaphragm wall is poured, hoist and pull out the mechanical trench wall reinforcement female groove system.

[0026] S7. Repeat the construction processes in steps S4 - S6 to complete the construction of all diaphragm walls.

[0027] The beneficial effects of a mechanical diaphragm wall trench wall reinforcement system and its usage method provided by the embodiments of the present invention are as follows:

[0028] 1. The present invention replaces the protection of the diaphragm wall trench segment by the traditional guide wall and the soil reinforcement on both sides of the trench segment. It uses a steel plate structure for wall protection to ensure the stability of the trench excavation, basically does not damage the soil outside the foundation pit, and the overall construction range of the trench wall is reduced compared with the trench wall reinforcement scheme, with less impact on the surrounding environment.

[0029] 2. The process of the present invention is simple. It uses a mechanical structure to replace the traditional reinforcement and guide wall structures, saves the process connection, and does not require the concrete of the above structures to reach the same strength. It has the advantages of standardized continuous construction, low overall cost, and short construction period.

[0030] 3. The support system composed of the double retaining wall plates and the support rods in the present invention effectively enhances the stability of the diaphragm wall construction.

[0031] 4. The mechanical trench wall reinforcement public groove system and the mechanical trench wall reinforcement female groove system in the present invention can be recycled and reused after the construction of part of the diaphragm wall, having the advantage of environmental protection. Description of the Drawings

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 Schematic perspective view of the mechanical groove wall reinforcement male groove system provided by the embodiment of the present invention;

[0034] Figure 2 Cross-sectional view of the mechanical groove wall reinforcement male groove system provided by the embodiment of the present invention;

[0035] Figure 3 Cross-sectional view of the mechanical groove wall reinforcement female groove system provided by the embodiment of the present invention;

[0036] Figure 4 Plan view of the mechanical groove wall reinforcement male groove system provided by the embodiment of the present invention;

[0037] Figure 5 Schematic connection diagram of the protective wall panel and the sickle crawler provided by the embodiment of the present invention;

[0038] Figure 6 Schematic construction diagram of the first diaphragm wall during the construction of the mechanical groove wall reinforcement male groove system provided by the embodiment of the present invention;

[0039] Figure 7 Schematic construction diagram of the third diaphragm wall during the construction of the mechanical groove wall reinforcement female groove system provided by the embodiment of the present invention.

[0040] Reference numerals: 1 - mechanical groove wall reinforcement male groove system; 2 - mechanical groove wall reinforcement female groove system; 3 - driving wheel; 4 - protective wall panel; 5 - support rod; 6 - sickle crawler; 7 - fixed bracket; 8 - driven wheel; 9 - synchronous motor; 10 - first diaphragm wall; 11 - second diaphragm wall; 12 - third diaphragm wall; 13 - ball; 14 - diaphragm wall; 15 - accommodation groove. Detailed embodiments

[0041] To enable those skilled in the art to better understand the technical solutions of the present invention, the following describes the preferred implementation schemes of the present invention in combination with specific embodiments. However, it should be understood that the drawings are only for illustrative purposes and cannot be construed as a limitation to the present invention; for better illustration of this embodiment, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as a limitation to the present invention.

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but it shall not be used as a basis for limiting the present invention.

[0043] As Figures 1 to 4 shown, a mechanical underground diaphragm wall trench wall reinforcement system includes a mechanical trench wall reinforcement male groove system 1 and a mechanical trench wall reinforcement female groove system 2;

[0044] Both the mechanical trench wall reinforcement male groove system 1 and the mechanical trench wall reinforcement female groove system 2 include:

[0045] A diaphragm wall stabilizing main body, in which a support structure is arranged;

[0046] A cutting device, which is movably arranged on the outer periphery of the diaphragm wall stabilizing main body and is supported by the side wall of the diaphragm wall stabilizing main body;

[0047] A driving device, which is arranged on the diaphragm wall stabilizing main body, and its output end is connected to the cutting device;

[0048] Among them, the bottom of the support structure of the mechanical trench wall reinforcement male groove system 1 is flush with the bottom of the diaphragm wall stabilizing main body, and the height of the bottom of the support structure of the mechanical trench wall reinforcement female groove system 2 is flush with the top of the underground diaphragm wall 14.

[0049] The diaphragm wall stabilizing main body includes two parallel and spaced-apart retaining plates 4. In this embodiment, the retaining plates 4 are made of steel plates.

[0050] The length of the retaining plate 4 is not less than the depth to be reinforced of the trench wall of the underground diaphragm wall 14.

[0051] The support structure includes two vertically and spaced-apart support rods 5 arranged inside the diaphragm wall stabilizing main body. In this embodiment, the support rods 5 are made of I-beams, and the I-beams are welded to the inner wall of the retaining plate 4.

[0052] The upper parts of the support structures inside the diaphragm wall stabilizing main bodies of the mechanical trench wall reinforcement male groove system 1 and the mechanical trench wall reinforcement female groove system 2 both extend above the top of the diaphragm wall stabilizing main body, and the protruding parts of the support structures are used to cooperate with double cranes.

[0053] The driving device includes a synchronous motor 9 arranged between the two retaining plates 4. The output shafts of the synchronous motor 9 are respectively connected to two driving wheels 3 to provide cutting power for the driving wheels 3, and the two driving wheels 3 are correspondingly arranged on the two retaining plates 4.

[0054] A plurality of sets of driven components are arranged on the diaphragm wall stabilizing main body. Each set of driven components is provided with two driven wheels 8, and they are correspondingly arranged on the two retaining plates 4.

[0055] In this embodiment, the driving wheel 3 and the driven wheel are welded to the retaining wall plate 4 through the fixing bracket 7.

[0056] Scythe crawlers 6 are arranged on the outer peripheral side walls of the two retaining wall plates 4. The scythe crawlers 6 are connected to the driving wheel 3 and the driven wheel 8 on the corresponding retaining wall plate 4 through an engagement transmission method. Specifically, the driving wheel 3 and the driven wheel 8 on a single retaining wall plate 4 are connected by the scythe crawler 6 to form a transmission structure.

[0057] During the construction of the mechanical trench wall reinforcement male trench system 1, two driving wheels 3 on the output shaft are synchronously driven by the driving motor 9 at the designed position of the diaphragm wall to be pre-constructed. The rotation of the driving wheel 3 drives the scythe crawler 6 and the driven wheel 8 to move. The mechanical trench wall reinforcement male trench system 1 excavates underground to the predetermined elevation, and a surrounding area is formed by the two retaining wall plates 4 and the two support rods 5 to ensure the stability of the trench wall of the diaphragm wall to be pre-constructed. Similarly, the mechanical trench wall reinforcement female trench system 2 completes the construction using the same working principle.

[0058] As Figure 5 shown, accommodation grooves 15 are provided on the peripheral side walls of the two retaining wall plates 4. A plurality of freely rotatable balls 13 are embedded in each accommodation groove 15. Part of the spherical surface of the ball 13 protrudes outside the accommodation groove 15 and forms a rolling contact fit with the inner surface of the corresponding scythe crawler 6.

[0059] The present invention also provides a usage method of a mechanical diaphragm wall trench wall reinforcement system. The mechanical trench wall reinforcement male trench system 1 and the mechanical trench wall reinforcement female trench system 2 as described above are prefabricated. The usage method includes the following steps (as Figure 6 and Figure 7 shown):

[0060] S1. Site preparation: Level the construction site and perform pre-construction positioning on the diaphragm wall 14.

[0061] S2. Installation of the mechanical trench wall reinforcement male trench system 1: Lift and install the mechanical trench wall reinforcement male trench system 1 to the designed position of the first diaphragm wall 10; Start the driving device, cut the soil through the scythe crawler 6, and ensure that the mechanical trench wall reinforcement male trench system 1 sinks evenly to the depth required for the diaphragm wall retaining wall, and then turn off the driving device.

[0062] S3. Construction of the first diaphragm wall 10: Perform trench forming, reinforcement cage lowering, and concrete pouring construction of the diaphragm wall within the mechanical trench wall reinforcement male trench system 1; After the diaphragm wall is poured, quickly use a double crane to lift and pull out the mechanical trench wall reinforcement male trench system 1.

[0063] S4. Construction of adjacent diaphragm walls: Hoist the mechanical grooving wall reinforcement male groove system 1 to the designed position of the second diaphragm wall 11, and reserve the installation space for the mechanical grooving wall reinforcement female groove system 2 between adjacent wall segments; repeat the sinking operation in step S2 and the construction steps in step S3.

[0064] S5. Installation of the mechanical grooving wall reinforcement female groove system 2: After the diaphragm wall corresponding to the mechanical grooving wall reinforcement male groove system 1 reaches the initial strength, hoist the mechanical grooving wall reinforcement female groove system 2 to the installation space between adjacent wall segments; start the driving motor to drive the sickle crawler 6 to cut the soil body, reach the required depth of the diaphragm wall protection, and then turn off the driving motor.

[0065] S6. Construction of the third diaphragm wall 12: Conduct grooving, reinforcement cage lowering and concrete pouring construction of the third diaphragm wall 12 in the mechanical grooving wall reinforcement female groove system 2; after the third diaphragm wall 12 is poured, quickly use a double crane to hoist and pull out the mechanical grooving wall reinforcement female groove system 2.

[0066] S7. Repeat the construction procedures in steps S4 - S6 to complete the construction of all diaphragm walls.

[0067] Based on the description and drawings of the present invention, those skilled in the art can easily manufacture or use a mechanical diaphragm wall grooving wall reinforcement system and its usage method of the present invention, and can achieve the positive effects recorded in the present invention.

[0068] Unless otherwise clearly specified and defined, in the present invention, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for exemplary illustration and should not be construed as a limitation to the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the drawings and according to specific circumstances.

[0069] Unless otherwise clearly specified and defined, in the present invention, if there are terms such as "set", "connected" and "connected", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A mechanical underground diaphragm wall trench wall reinforcement system, characterized in that: It includes a mechanical grooved wall reinforcement male groove system and a mechanical grooved wall reinforcement female groove system; Both the mechanical grooved wall reinforcement male groove system and the mechanical grooved wall reinforcement female groove system include: A diaphragm wall stability main body, inside which a support structure is provided; A cutting device, movably arranged on the outer periphery of the diaphragm wall stability main body and supported by the side wall of the diaphragm wall stability main body; A driving device, arranged on the diaphragm wall stability main body, and its output end is connected to the cutting device; Among them, the bottom of the support structure of the mechanical grooved wall reinforcement male groove system is flush with the bottom of the diaphragm wall stability main body, and the height of the bottom of the support structure of the mechanical grooved wall reinforcement female groove system is flush with the top of the diaphragm wall.

2. The mechanical underground diaphragm wall grooving wall reinforcement system according to claim 1, wherein: The diaphragm wall stability main body includes two parallel and spaced retaining plates.

3. A mechanical underground diaphragm wall trench wall reinforcement system according to claim 1, characterized in that: The length of the retaining plate is not less than the depth of the diaphragm wall groove to be reinforced.

4. A mechanical underground diaphragm wall groove wall reinforcement system according to claim 1, characterized in that: The support structure includes two vertically and spaced support rods arranged inside the diaphragm wall stability main body.

5. A mechanical underground diaphragm wall trench wall reinforcement system according to claim 1, characterized in that: The upper parts of the support structures inside the diaphragm wall stability main bodies of the mechanical grooved wall reinforcement male groove system and the mechanical grooved wall reinforcement female groove system both extend above the top of the diaphragm wall stability main body.

6. A mechanical underground diaphragm wall grooving wall reinforcement system according to claim 2, characterized in that: The driving device includes a synchronous motor arranged between the two retaining plates, and the output shafts of the synchronous motor are respectively connected to two driving wheels, and the two driving wheels are correspondingly arranged on the two retaining plates.

7. A mechanical underground diaphragm wall groove wall reinforcement system according to claim 6, characterized in that: Multiple groups of driven components are arranged on the diaphragm wall stability main body, and each group of driven components has two driven wheels, and they are correspondingly arranged on the two retaining plates.

8. A mechanical underground diaphragm wall trench wall reinforcement system according to claim 7, characterized in that: Sickle crawlers are arranged on the outer peripheral side walls of the two retaining plates, and the sickle crawlers are connected to the driving wheels and driven wheels on the corresponding retaining plates through a meshing transmission method.

9. A mechanical underground diaphragm wall trench wall reinforcement system according to claim 8, characterized in that: Receiving grooves are opened on the peripheral side walls of the two retaining plates, and multiple freely rotatable balls are embedded in each receiving groove. Part of the spherical surface of the balls protrudes outside the receiving groove and forms a rolling contact fit with the inner surface of the corresponding sickle crawler.

10. A method for using a mechanical underground diaphragm wall groove wall reinforcement system, characterized in that, Pre-fabricate the mechanical grooved wall reinforcement male groove system and the mechanical grooved wall reinforcement female groove system as described in any one of claims 1-9, and the using method includes the following steps: S1. Site preparation: Finish the leveling of the construction site and perform pre-construction positioning on the diaphragm wall; S2. Installation of the mechanical grooved wall reinforcement male groove system: Lift and install the mechanical grooved wall reinforcement male groove system to the designed position of the first diaphragm wall; Start the driving device, cut the soil through the sickle crawler, and ensure that the mechanical grooved wall reinforcement male groove system sinks uniformly to the required depth of the diaphragm wall retaining wall, and then turn off the driving device; S3. Construction of the first diaphragm wall: Perform grooving, steel cage lowering and concrete pouring construction of the diaphragm wall inside the mechanical grooved wall reinforcement male groove system; after the diaphragm wall is poured, lift and pull out the mechanical grooved wall reinforcement male groove system; S4. Construction of adjacent diaphragm walls: Lift and install the mechanical grooved wall reinforcement male groove system to the designed position of the second diaphragm wall, and reserve the installation space for the mechanical grooved wall reinforcement female groove system between adjacent wall segments; repeat the sinking operation in step S2 and the construction steps in step S3; S5. Installation of the mechanical grooved wall reinforcement female groove system: After the diaphragm wall corresponding to the mechanical grooved wall reinforcement male groove system reaches the initial strength, hoist the mechanical grooved wall reinforcement female groove system to the installation space between adjacent wall segments; start the drive motor to drive the sickle crawler to cut the soil, reach the required depth of the diaphragm wall protection, and turn off the drive motor; S6. Construction of the third diaphragm wall: Carry out the grooving, steel cage lowering and concrete pouring construction of the third diaphragm wall in the mechanical grooved wall reinforcement female groove system; after the pouring of the third diaphragm wall is completed, hoist and pull out the mechanical grooved wall reinforcement female groove system; S7. Repeat the construction procedures of steps S4 - S6 to complete the construction of all diaphragm walls.

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