Guide wall structure of underground diaphragm wall of foundation pit slope protection

Abstract

The utility model discloses a foundation pit slope protection underground diaphragm wall guide wall structure which comprises the ground, an underground diaphragm wall deep groove is formed in the ground, concrete guide wall assemblies are symmetrically arranged on the left side and the right side of an upper end opening of the underground diaphragm wall deep groove, and each concrete guide wall assembly comprises a concrete vertical wall. When a reinforcement cage is lowered every time, the lower supporting shaft is lowered to the position close to the inserting hole in the lower end, and before the lower supporting shaft is pulled out every time, the lower supporting shaft slides downwards to the second sliding block to be aligned with the inserting hole in the lower end through cooperation of the manual driving unit and the crawling unit; and in the process of lowering the lower supporting shaft, the reinforcement cage is lapped on the upper side of the upper supporting shaft, so that the lower supporting shaft can be easily pulled out from the bottom between the U-shaped sliding rail and the C-shaped sliding rail, and the situation that the reinforcement cage deforms and even is damaged due to the fact that a steel pipe used for supporting the reinforcement cage is pulled out forwards is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, in particular to an underground continuous wall guide wall structure for foundation pit slope protection. Background Art

[0002] Underground continuous wall is a kind of trenching machine used in the remote foundation project on the ground. Along the peripheral axis of the deep excavation project, under the condition of mud wall protection, a narrow and long deep trench is excavated. After the trench is cleaned, a steel cage is suspended in the trench, and then underwater concrete is poured using the conduit method to build a unit trench section. This is done section by section to build a continuous reinforced concrete wall underground as a water interception, anti-seepage, load-bearing and water-retaining structure. After excavating the deep trench, some large underground continuous walls need to cast guide walls on both sides of the upper port of the deep trench to strengthen the strength of the upper port of the deep trench.

[0003] Since the height of the steel cage of the large underground continuous wall is too high, the steel cage needs to be tied up and lowered section by section from bottom to top. During each tying, a steel pipe is inserted horizontally at the upper port before the two guide walls to support the steel cage.

[0004] However, before lowering the steel cage each time, the steel pipe that bears the weight of the steel cage needs to be forcibly pulled out, and the steel cage is heavy. In this way, the steel cage is easily twisted and deformed when the steel pipe is forcibly pulled out, making it difficult to ensure the strength of the steel cage and the thickness of the steel bar protective layer. Utility Model Content

[0005] The utility model aims to provide an underground continuous wall guide wall structure for foundation pit slope protection, so as to solve the technical problem that the steel cage is easily twisted and deformed when the steel pipe is forcibly pulled out.

[0006] The utility model provides a technical solution to the above-mentioned technical problems as follows: an underground continuous wall guide wall structure for foundation pit slope protection, comprising a ground, an underground continuous wall deep groove being opened on the ground, concrete guide wall components being symmetrically arranged on the left and right sides of an upper port of the underground continuous wall deep groove, the concrete guide wall components comprising a concrete vertical wall, a concrete hanging plate being fixedly arranged on the upper end of the concrete vertical wall away from the underground continuous wall deep groove, a concrete convex strip being fixedly arranged on the lower end of the concrete hanging plate away from the underground continuous wall deep groove, slide grooves being fixedly arranged on the upper sides of the left and right concrete guide wall components, and a plurality of auxiliary lowering mechanisms being equidistantly distributed in the front-to-back direction are arranged between the slide grooves on the left and right sides.

[0007] The utility model adopts the above-mentioned underground continuous wall guide wall structure for foundation pit slope protection, and further: the auxiliary lowering mechanism includes a U-shaped slide rail and a C-shaped slide rail, the lower ends of the U-shaped slide rail and the C-shaped slide rail are respectively movably connected to the slide grooves on the left and right sides, and the upper and lower ends of the C-shaped slide rail away from the deep groove of the underground continuous wall are provided with sockets, and two bracket assemblies distributed up and down are arranged between the U-shaped slide rail and the C-shaped slide rail.

[0008] The utility model adopts the above-mentioned underground continuous wall guide structure for foundation pit slope protection, and further: the bracket assembly includes a supporting shaft, a sleeve is rotatably connected to the middle part of the outer side of the supporting shaft, and the left and right ends of the supporting shaft are rotatably connected to the first slider and the second slider, the first slider is slidably connected to the inner side of the U-shaped slide rail in the up and down directions, and the second slider is slidably connected to the inner side of the C-shaped slide rail in the up and down directions. The first slider can be inserted into the inner side of the U-shaped slide rail from right to left, and the second slider can be inserted into the inner side of the C-shaped slide rail from right to left through the jack, a crawling unit is arranged between the supporting shaft and the U-shaped slide rail and the C-shaped slide rail, and a manual driving unit for driving the support shaft to rotate is arranged between the supporting shaft and the second slider.

[0009] The utility model adopts the above-mentioned underground continuous wall guide wall structure for foundation pit slope protection, and further: the crawling unit includes a first gear and a second gear, the first gear and the second gear are respectively fixedly connected to the left and right ends of the outer wall of the support shaft, the first gear is meshed with a first rack, the first rack is fixedly connected to the U-shaped slide rail, the second gear is meshed with a second rack, and the second rack is fixedly connected to the C-shaped slide rail.

[0010] The utility model adopts the above-mentioned underground continuous wall guide wall structure for foundation pit slope protection, and further: the manual drive unit includes a worm wheel, the worm wheel is fixedly connected to the support shaft, the worm wheel is meshed with a worm, the worm is rotatably connected to the second slider, and the rotating shaft of the worm is fixedly connected to a handle.

[0011] The utility model adopts the above-mentioned underground continuous wall guide wall structure for foundation pit slope protection, and further: the lower ends of the U-shaped slide rail and the C-shaped slide rail are fixedly connected with moving blocks, the moving blocks are located on the inner side of the slide groove on the same side and are slidably connected with the slide groove on the same side in the front and rear directions, and reinforcement aids are arranged between the U-shaped slide rail and the C-shaped slide rail and the moving blocks on the same side.

[0012] The utility model adopts the above-mentioned underground continuous wall guide wall structure for foundation pit slope protection, and further: a first plain concrete cushion layer is arranged between the lower surface of the concrete hanging plate and the ground, and a second plain concrete cushion layer is arranged between the lower edge surface of the concrete convex strip and the ground.

[0013] The beneficial effects of the utility model are:

[0014] 1. According to the utility model, each time the steel cage is lowered, the lower supporting shaft is lowered to the insertion hole close to the lower end, and before each pulling out of the lower supporting shaft, the lower supporting shaft is first slid down to the second slider and aligned with the insertion hole at the lower end through the cooperation of the manual drive unit and the crawling unit, and in the process of lowering the lower supporting shaft, the steel cage is placed on the upper side of the upper supporting shaft, so that the lower supporting shaft can be easily pulled out from the bottom between the U-shaped slide rail and the C-shaped slide rail, thereby avoiding the deformation or even damage of the steel cage caused by pulling out the steel pipe used to support the steel cage, thereby ensuring the strength of the steel cage and the thickness of the steel protection layer.

[0015] 2. The utility model can improve the grip strength of the concrete vertical wall by setting the concrete hanging plate, prevent the concrete vertical wall from tilting or even falling into the deep groove of the underground continuous wall, and greatly improve the friction between the concrete hanging plate and the ground by setting the concrete convex strips, thereby further improving the grip strength of the concrete vertical wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only schematic and do not limit the present invention, wherein:

[0017] Figure 1 This is a schematic diagram of the front side cross-sectional structure of an embodiment of the utility model;

[0018] Figure 2 for Figure 2 A local enlarged schematic diagram of the middle A;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the auxiliary lowering mechanism of an embodiment of the utility model from a front right top view.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Ground; 2. Deep groove of underground continuous wall; 3. Concrete vertical wall; 4. Concrete hanging board; 5. Concrete convex strip; 6. U-shaped slide rail; 7. C-shaped slide rail; 8. Socket; 9. Support shaft; 10. Sleeve; 11. First slider; 12. Second slider; 13. First gear; 14. Second gear; 15. First rack; 16. Second rack; 17. Worm wheel; 18. Worm; 19. Handle; 20. Slide groove; 21. Moving block; 22. First plain concrete cushion layer; 23. Second plain concrete cushion layer. DETAILED DESCRIPTION

[0022] Hereinafter, an embodiment of the underground continuous wall guide wall structure for foundation pit slope protection of the present invention will be described with reference to the accompanying drawings.

[0023] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are explanatory and exemplary, and should not be interpreted as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0024] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the utility model and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structure of various components of the embodiments of the utility model, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0025] Figure 1-3 An underground continuous wall guide wall structure for foundation pit slope protection according to an embodiment of the utility model is shown, which comprises: a ground 1, an underground continuous wall deep groove 2 is opened on the ground 1, concrete guide wall components are symmetrically arranged on the left and right sides of the upper end of the underground continuous wall deep groove 2, the concrete guide wall components comprise concrete vertical walls 3, the concrete vertical walls 3, a concrete hanging plate 4 is fixedly arranged on the upper end of the side of the concrete vertical wall 3 away from the underground continuous wall deep groove 2, a concrete convex strip 5 is fixedly arranged on the lower end of the concrete hanging plate 4 away from the underground continuous wall deep groove 2, a slide groove 20 is fixedly arranged on the upper sides of the left and right concrete guide wall components, and a plurality of auxiliary lowering mechanisms equidistantly distributed in the front-to-back direction are arranged between the slide grooves 20 on the left and right sides.

[0026] The auxiliary lowering mechanism includes a U-shaped slide rail 6 and a C-shaped slide rail 7. The lower ends of the U-shaped slide rail 6 and the C-shaped slide rail 7 are movably connected to the slide grooves 20 on the left and right sides respectively. The upper and lower ends of the C-shaped slide rail 7 away from the underground continuous wall deep groove 2 are provided with sockets 8. Two bracket assemblies distributed up and down are arranged between the U-shaped slide rail 6 and the C-shaped slide rail 7.

[0027] The bracket assembly includes a support shaft 9, a sleeve 10 is rotatably connected to the middle part of the outer side of the support shaft 9, and a first slider 11 and a second slider 12 are rotatably connected to the left and right ends of the support shaft 9 respectively. The first slider 11 is slidably connected to the inner side of the U-shaped slide rail 6 in the up and down directions, and the second slider 12 is slidably connected to the inner side of the C-shaped slide rail 7 in the up and down directions. The first slider 11 can be inserted into the inner side of the U-shaped slide rail 6 from right to left, and the second slider 12 can be inserted into the inner side of the C-shaped slide rail 7 from right to left through the socket 8. A crawling unit is arranged between the support shaft 9 and the U-shaped slide rail 6 and the C-shaped slide rail 7, and a manual driving unit for driving the support shaft 9 to rotate is arranged between the support shaft 9 and the second slider 12.

[0028] The crawling unit includes a first gear 13 and a second gear 14, which are respectively fixedly connected to the left and right ends of the outer wall of the support shaft 9, the first gear 13 is meshed with a first rack 15, and the first rack 15 is fixedly connected to the U-shaped slide rail 6, the second gear 14 is meshed with a second rack 16, and the second rack 16 is fixedly connected to the C-shaped slide rail 7.

[0029] The manual drive unit includes a worm wheel 17 , which is fixedly connected to the support shaft 9 , and a worm 18 is meshed with the worm wheel 17 , and the worm 18 is rotationally connected to the second slider 12 , and a handle 19 is fixedly connected to the rotation axis of the worm 18 .

[0030] The lower ends of the U-shaped slide rail 6 and the C-shaped slide rail 7 are fixedly connected with moving blocks 21, and the moving blocks 21 are located on the inner side of the slide groove 20 on the same side and are slidably connected to the slide groove 20 on the same side in the front-to-back direction. Reinforcement aids are provided between the U-shaped slide rail 6 and the C-shaped slide rail 7 and the moving blocks 21 on the same side; through the provision of the moving blocks 21, the U-shaped slide rail 6 and the C-shaped slide rail 7 can slide smoothly along the slide grooves 20 on the left and right sides respectively; the reinforcement aids can improve the firmness and stability of the U-shaped slide rail 6 and the C-shaped slide rail 7.

[0031] A first plain concrete cushion layer 22 is arranged between the lower surface of the concrete hanging plate 4 and the ground 1, and a second plain concrete cushion layer 23 is arranged between the lower surface of the concrete convex strip 5 and the ground 1; by setting the first plain concrete cushion layer 22 and the second plain concrete cushion layer 23, the molding quality of the bottom of the concrete guide wall assembly can be improved.

[0032] Working principle:

[0033] The structure can improve the gripping strength of the concrete vertical wall 3 by setting the concrete hanging plate 4, prevent the concrete vertical wall 3 from tilting or even falling into the underground continuous wall deep groove 2, and greatly improve the friction between the concrete hanging plate 4 and the ground 1 by setting the concrete convex strip 5, thereby further improving the gripping strength of the concrete vertical wall 3; when tying the steel cage, the structure first ties the steel cage of the underground continuous wall on the upper side of the upper bracket assembly, and after the steel cage is tied for a short section, the lower bracket assembly is pulled out, that is, the first slider 11 is pulled out from the U-shaped slide rail 6 and the second slider 12 is pulled out from the C-shaped slide rail 7 through the socket 8 at the lower end, and then the upper bracket assembly crawls downward to the socket 8 close to the lower end, and the steel cage is lowered, and then the previously pulled out bracket assembly is inserted To the upper ends of the U-shaped slide rail 6 and the C-shaped slide rail 7, the first slider 11 is inserted into the U-shaped slide rail 6 and the second slider 12 is inserted into the C-shaped slide rail 7 through the upper socket 8, and then a small section of the steel cage is tied on the bracket assembly at the upper end. When the small section of the steel cage is tied, the bracket assembly close to the lower socket 8 at the lower end is lowered to align with the socket 8 at the lower end, so that the bracket assembly at the upper end bears the weight of the steel cage, and then the bracket assembly is pulled out from the bottom between the U-shaped slide rail 6 and the C-shaped slide rail 7, and then the bracket assembly at the upper end is lowered to lower the steel cage again, and this is repeated. After each small section of the steel cage is tied, a small section of the steel cage is lowered through the auxiliary lowering mechanism until the entire steel cage is completely lowered into the deep groove 2 of the underground continuous wall;

[0034] The specific process of the bracket assembly crawling is as follows: the handle 19 is to be determined, the worm 18 rotates, the worm 18 drives the worm wheel 17 to rotate, the worm wheel 17 is to be determined, the support shaft 9 rotates, the support shaft 9 is to be determined, the first gear 13 and the second gear 14 rotate synchronously, the first slider 11 slides along the U-shaped slide rail 6 through the cooperation of the first gear 13 and the first rack 15, and the second slider 12 slides along the C-shaped slide rail 7 through the cooperation of the second gear 14 and the second rack 16, so that the support shaft 9 can crawl up and down; when the support shaft 9 stops moving and bears the weight of the steel cage, the worm wheel 17 cannot reversely drive the worm 18 to rotate, thereby realizing the self-locking of the support shaft 9;

[0035] This structure can facilitate the adjustment of the position of the auxiliary lowering mechanism by setting the slide groove 20 and the moving block 21. This structure can set two auxiliary lowering mechanisms as a group, and a telescopic rod can be provided between two auxiliary lowering mechanisms in a group to facilitate the adjustment of the position of the auxiliary lowering mechanism. When it rains, a cover plate can be laid above a row of auxiliary lowering mechanisms to prevent rainwater from falling into the deep groove 2 of the underground continuous wall.

[0036] To sum up, each time the steel cage is lowered, the lower support shaft 9 is lowered to a position close to the insertion hole 8 at the lower end, and before each time the lower support shaft 9 is pulled out, the lower support shaft 9 is first slid down to the second slider 12 and aligned with the insertion hole 8 at the lower end through the cooperation of the manual drive unit and the crawling unit, and in the process of lowering the lower support shaft 9, the steel cage is placed on the upper side of the upper support shaft 9, so that the lower support shaft 9 can be easily pulled out from the bottom between the U-shaped slide rail 6 and the C-shaped slide rail 7, thereby avoiding the deformation or even damage of the steel cage caused by pulling out the steel pipe used to support the steel cage, thereby ensuring the strength of the steel cage and the thickness of the steel bar protective layer.

[0037] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art may also make other combinations between the technical features according to the purpose of the utility model to achieve the purpose of the utility model.

Claims

1. An underground continuous wall guide wall structure for foundation pit slope protection, characterized in that: include: A ground (1), wherein an underground continuous wall deep groove (2) is opened on the ground (1), and concrete guide wall components are symmetrically arranged on the left and right sides of the upper end of the underground continuous wall deep groove (2), and the concrete guide wall components include a concrete vertical wall (3), and the upper end of the concrete vertical wall (3) away from the underground continuous wall deep groove (2) is fixedly provided with a concrete hanging plate (4), and the lower end of the concrete hanging plate (4) away from the underground continuous wall deep groove (2) is fixedly provided with a concrete convex strip (5), and the upper sides of the left and right concrete guide wall components are fixedly provided with a slide groove (20), and a plurality of auxiliary lowering mechanisms are arranged between the slide grooves (20) on the left and right sides and are equidistantly distributed in the front-to-back direction.

2. The underground continuous wall guide wall structure for foundation pit slope protection according to claim 1 is characterized in that: The auxiliary lowering mechanism comprises a U-shaped slide rail (6) and a C-shaped slide rail (7), the lower ends of the U-shaped slide rail (6) and the C-shaped slide rail (7) are respectively movably connected to the slide grooves (20) on the left and right sides, the upper and lower ends of the C-shaped slide rail (7) away from the underground continuous wall deep groove (2) are provided with plug holes (8), and two bracket assemblies distributed in an upper and lower manner are arranged between the U-shaped slide rail (6) and the C-shaped slide rail (7).

3. The underground continuous wall guide wall structure for foundation pit slope protection according to claim 2 is characterized in that: The bracket assembly comprises a supporting shaft (9), a sleeve (10) is rotatably connected to the middle part of the outer side of the supporting shaft (9), a first slider (11) and a second slider (12) are rotatably connected to the left and right ends of the supporting shaft (9), the first slider (11) is slidably connected to the inner side of the U-shaped slide rail (6) in the up-down direction, and the second slider (12) is slidably connected to the inner side of the C-shaped slide rail (7) in the up-down direction, the first slider (11) can be inserted into the inner side of the U-shaped slide rail (6) from right to left, and the second slider (12) can be inserted into the inner side of the C-shaped slide rail (7) from right to left through the insertion hole (8), a crawling unit is arranged between the supporting shaft (9) and the U-shaped slide rail (6) and the C-shaped slide rail (7), and a manual driving unit for driving the supporting shaft (9) to rotate is arranged between the supporting shaft (9) and the second slider (12).

4. The underground continuous wall guide wall structure for foundation pit slope protection according to claim 3 is characterized in that: The crawling unit comprises a first gear (13) and a second gear (14), the first gear (13) and the second gear (14) being fixedly connected to the left and right ends of the outer wall of the support shaft (9) respectively, the first gear (13) being meshed with a first rack (15), the first rack (15) being fixedly connected to the U-shaped slide rail (6), the second gear (14) being meshed with a second rack (16), the second rack (16) being fixedly connected to the C-shaped slide rail (7).

5. The underground continuous wall guide wall structure for foundation pit slope protection according to claim 3 is characterized in that: The manual drive unit comprises a worm wheel (17), the worm wheel (17) being fixedly connected to the support shaft (9), the worm wheel (17) being meshed with a worm (18), the worm (18) being rotationally connected to the second slider (12), and the rotation axis of the worm (18) being fixedly connected to a handle (19).

6. The underground continuous wall guide wall structure for foundation pit slope protection according to claim 2, characterized in that: The lower ends of the U-shaped slide rail (6) and the C-shaped slide rail (7) are fixedly connected to a moving block (21); the moving block (21) is located inside the slide groove (20) on the same side and is slidably connected to the slide groove (20) on the same side in the front-rear direction; and reinforcements are provided between the U-shaped slide rail (6) and the C-shaped slide rail (7) and the moving block (21) on the same side.

7. The underground continuous wall guide wall structure for foundation pit slope protection according to claim 1, characterized in that: A first plain concrete cushion layer (22) is provided between the lower surface of the concrete hanging plate (4) and the ground (1), and a second plain concrete cushion layer (23) is provided between the lower surface of the concrete convex strip (5) and the ground (1).

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