Counter-force deviation rectification supporting structure for open caisson construction

Abstract

The utility model belongs to the technical field of building construction, and discloses a counter-force deviation rectifying supporting structure for open caisson construction, which comprises an open caisson partially inserted into a soil layer, an annular table with the outer diameter gradually decreased from top to bottom is arranged on the position, close to the top of the open caisson, of the outer wall of the open caisson, and an annular mounting seat is arranged on the soil layer; the inner diameter of the annular mounting base is larger than the outer diameter of the annular table, a plurality of sets of supporting assemblies which are evenly distributed about the axis of the open caisson and used for conducting counter-force deviation rectification on open caisson construction are arranged on the soil layer, and the multiple sets of supporting assemblies are driven by electricity and share one driving source so as to drive the annular table to be kept in a completely vertical state in the descending process. According to the method, the existing design mode that the open caisson is supported in the vertical state through a plurality of hydraulic jacks is changed, and the probability that the open caisson is difficult to completely keep in the vertical state in the descending process is fully reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of caisson construction, in particular to a reaction force deviation correction support structure used in caisson construction. Background Art

[0002] Caisson is a shaft-shaped structure. It is excavated from the well, and sinks to the designed elevation by relying on its own gravity to overcome the friction of the well wall. Then, the bottom is sealed with concrete and the well hole is filled to make it the foundation of bridge piers or other structures. The characteristics of caisson foundation are that it can be buried at a great depth, has strong integrity, good stability, has a large bearing area, and can withstand large vertical and horizontal loads. The caisson is both a foundation and a cofferdam structure for retaining soil and water during construction. However, during the sinking process of the caisson, tilting and displacement of the caisson often occur, which must be prevented in advance.

[0003] A Chinese utility model patent with publication number CN206173987U discloses a reaction force correction support structure for caisson construction, wherein the reaction force correction support structure comprises a plurality of support brackets arranged on the outer side of the caisson; a hydraulic jack is arranged under the support bracket, one end of the hydraulic jack supports the lower surface of the support bracket, and the other end is supported on the surface of the soil layer.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: during the use of the above-mentioned reaction force correction support structure for caisson construction, multiple workers are required to simultaneously adjust the hydraulic jacks in different positions to maintain the horizontal state of the caisson. When in use, the hydraulic jack needs to be connected to the oil source required by the hydraulic jack so that it can work normally. The hydraulic jack is operated by a manual pump or an electric pump to slowly lift or lower the workpiece. In the specific actual use process, it is difficult for the workers to keep the hydraulic jacks in different positions working at the same time and keep the supporting legs in a horizontal state at all times. Therefore, it is difficult to keep the lifting of the caisson completely vertical. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a reaction force deviation correction support structure for caisson construction.

[0006] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a reaction force correction support structure for caisson construction, including a caisson partially inserted into a soil layer, an annular platform with an outer diameter gradually decreasing from top to bottom is arranged on the outer wall of the caisson near its top, an annular mounting seat is arranged on the soil layer, the inner diameter of the annular mounting seat is larger than the outer diameter of the annular platform, and multiple groups of support components evenly distributed about the axis of the caisson and used for reaction force correction of caisson construction are arranged on the soil layer, and the multiple groups of support components are electrically driven and share a driving source to drive the annular platform to maintain a completely vertical state during the descent process.

[0007] By adopting the above technical solution, when the caisson needs to be supported in a vertical state during its descent, the staff only needs to use a driving source to drive multiple groups of supporting components to cooperate with each other, so that the annular platform can remain in a completely vertical state during the descent under the action of gravity. This changes the existing design method of supporting the caisson in a vertical state by multiple hydraulic jacks, and fully reduces the probability that the caisson will be difficult to maintain a completely vertical state during the descent.

[0008] Furthermore, an annular mounting seat is provided with an annular mounting groove at the top, an annular bevel gear is rotatably mounted on the inner bottom wall of the annular mounting groove, each group of the supporting components comprises a threaded rod rotatably mounted on the inner wall of the annular mounting seat, a guide rod fixed on the inner wall of the annular mounting seat, a horizontal plate fixed on the inner wall of the annular mounting seat near the bottom of the annular mounting seat, a vertical plate fixed on the top of the horizontal plate, a slider sleeved on the threaded rod and threadedly connected to the threaded rod, a supporting block fixed on the top of the slider, and a driven bevel gear fixedly sleeved on the threaded rod and meshing with the annular bevel gear, the top of the supporting block is provided with an arc surface that cooperates with and abuts against the bottom of the annular table;

[0009] The driving source includes a motor fixed on the outer wall of the annular mounting seat, the output shaft of the motor passes through the outer wall of the annular mounting seat and is rotatably connected to the annular mounting seat, the driving source also includes a driving gear fixed on the output shaft of the motor and a driven gear fixedly sleeved on one of the threaded rods and meshing with the driving gear, one end of the threaded rod close to the caisson axis is rotatably connected to the side wall of the vertical plate away from the caisson axis, and the guide rod passes through the slider and is clearance-matched with the slider.

[0010] By adopting the above technical solution, before the caisson needs to be lowered, the staff needs to start the motor first. After the motor is started, it drives the active gear to rotate, and the rotation of the active gear drives the driven gear to rotate. The driven gear drives one of the threaded rods to rotate, and the threaded rod drives the driven bevel gear and the annular bevel gear on the threaded rod to rotate, and the annular bevel gear drives other threaded rods to rotate. Affected by the circumferential limit of the guide rod, the rotation of the threaded rod drives the slider to move toward the side away from the axis of the caisson, so that the slider drives the support block to move. Since the arc surface on the support block abuts the arc surface of the bottom of the annular platform, the inner ring of the annular platform fits the outer wall of the caisson, and the annular platform and the caisson are fixed by fixing parts, it plays a good limiting role on the caisson in other directions, so that the caisson can slowly sink in the vertical direction.

[0011] Furthermore, a cover plate is arranged on the top of the annular mounting seat, and a sliding groove which slidably cooperates with the sliding block is arranged at a position of the cover plate corresponding to the sliding block.

[0012] By adopting the above technical solution, the setting of the cover plate makes it convenient for the staff to assemble and repair the drive source and the support assembly. During the slow sinking of the caisson, the slider will move toward the side away from the axis of the caisson. The setting of the slide groove on the cover plate plays a good role in giving way to the slider.

[0013] Furthermore, an anchor rod is provided through the cover plate and is in gap with the cover plate, the lower end of the anchor rod is inserted into the soil layer, and the anchor rod passes through the annular mounting seat and is in gap with the annular mounting seat.

[0014] By adopting the above technical solution, the bottom surface of the annular mounting seat abuts against the top surface of the soil layer during the descent of the caisson. The provision of anchor rods enhances the connection between the annular mounting seat and the soil layer, thereby improving the stability of the annular mounting seat in supporting the sinking of the caisson.

[0015] Furthermore, a clearance groove is provided at a position of the side wall of the annular platform corresponding to the vertical plate to prevent the vertical plate from obstructing the sinking of the caisson.

[0016] By adopting the above technical solution, during the descent of the caisson, the slider will move in a direction away from the axis of the caisson. The setting of the give way groove reduces the probability that the annular platform will be obstructed by the vertical plate during the sinking of the caisson, making it difficult for the caisson to continue to descend.

[0017] Furthermore, the fixing member is a bolt which penetrates the inner wall of the caisson and cooperates with the clearance of the caisson, and the end of the bolt is threadedly connected to the side wall of the annular platform close to the axis of the caisson.

[0018] By adopting the above technical solution and the arrangement of the bolts, it is convenient for the staff to install and disassemble the annular table at a later time.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. In the present application, when the caisson needs to be supported in a vertical state during its descent, the staff can drive multiple groups of support components to cooperate through a driving source, so that the annular platform can maintain a completely vertical state during the descent under the action of gravity, which changes the existing design method of supporting the caisson in a vertical state by multiple hydraulic jacks, and fully reduces the probability that the caisson is difficult to maintain a completely vertical state during the descent process;

[0021] 2. In the present application, the setting of the cover plate facilitates the staff to assemble and inspect the driving source and the supporting components. During the slow sinking of the caisson, the slider will move toward the side away from the axis of the caisson. The setting of the slide groove on the cover plate plays a good role in giving way to the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of an embodiment of the utility model for highlighting a support assembly;

[0024] Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle;

[0025] Figure 4 It is a planar structural schematic diagram for highlighting the connection relationship between the driven bevel gear and the annular bevel gear according to an embodiment of the utility model.

[0026] In the figure: 1, caisson; 11, fixing piece; 2, annular platform; 21, give way groove; 3, annular mounting seat; 31, annular mounting groove; 32, annular bevel gear; 33, cover plate; 331, slide groove; 34, anchor rod; 4, support assembly; 41, threaded rod; 42, guide rod; 43, horizontal plate; 44, vertical plate; 45, slider; 46, support block; 461, arc surface; 47, driven bevel gear; 5, driving source; 51, motor; 52, driving gear; 53, driven gear; 6, soil layer. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0028] like Figure 1-4As shown, the embodiment of the present application discloses a reaction force correction support structure for caisson construction, including a caisson 1, an annular mounting seat 3 and a support assembly 4. The caisson 1 is partially inserted into the soil layer 6, and an annular platform 2 with an outer diameter gradually decreasing from top to bottom is provided on the outer wall of the caisson 1 near its top. A fixing part 11 for fixing to the annular platform 2 is provided on the caisson 1. Specifically: the fixing part 11 is a bolt that is penetrated through the inner wall of the caisson 1 and is gap-matched with the caisson 1. The end of the bolt is threadedly connected to the side wall of the annular platform 2 near the axis of the caisson 1. The provision of the bolt facilitates the staff to install and disassemble the annular platform 2 later.

[0029] The annular mounting seat 3 is arranged on the soil layer 6, and an annular mounting groove 31 is arranged on the top of the annular mounting seat 3, and an annular bevel gear 32 is rotatably mounted on the inner bottom wall of the annular mounting groove 31. A cover plate 33 is arranged on the top of the annular mounting seat 3. The arrangement of the cover plate 33 facilitates the staff to assemble and overhaul the driving source 5 and the supporting assembly 4. An anchor rod 34 is arranged through the cover plate 33 and is loosely matched with the cover plate 33. The lower end of the anchor rod 34 is inserted into the soil layer 6, and the anchor rod 34 passes through the annular mounting seat 3 and is loosely matched with the annular mounting seat 3. During the descent of the caisson 1, the bottom surface of the annular mounting seat 3 abuts against the top surface of the soil layer 6. The arrangement of the anchor rod 34 enhances the connection between the annular mounting seat 3 and the soil layer 6, and improves the stability of the annular mounting seat 3 in the process of supporting the sinking of the caisson 1. In this embodiment, the inner diameter of the annular mounting seat 3 is greater than the outer diameter of the annular platform 2.

[0030] Multiple groups of support assemblies 4 are arranged on the soil layer 6 and used to correct the reaction force of the caisson 1. Multiple groups of support assemblies 4 are evenly distributed about the axis of the caisson 1. Each group of support assemblies 4 includes a threaded rod 41, a guide rod 42, a horizontal plate 43, a vertical plate 44, a slider 45, a support block 46 and a driven bevel gear 47. The threaded rod 41 is rotatably mounted on the inner wall of the annular mounting seat 3, and the guide rod 42 is fixed on the inner wall of the annular mounting seat 3. The horizontal plate 43 is fixed on the inner wall of the annular mounting seat 3 near the bottom of the annular mounting seat 3, and the vertical plate 44 is fixed on the top of the horizontal plate 43. The slider 45 is sleeved on the threaded rod 41 and threadedly connected with the threaded rod 41. The support block 46 is fixed on the top of the slider 45. The top of the support block 46 is provided with an arc surface 461 that matches and abuts the bottom of the annular platform 2. The driven bevel gear 47 is fixedly sleeved on the threaded rod 41 and meshes with the annular bevel gear 32.

[0031] The multiple groups of support components 4 are electrically driven and share a driving source 5 to drive the annular platform 2 to maintain a completely vertical state during the descent process. The driving source 5 includes a motor 51, a driving gear 52, and a driven gear 53. The motor 51 is fixed on the outer wall of the annular mounting seat 3, the driving gear 52 is fixed on the output shaft of the motor 51, and the driven gear 53 is fixedly sleeved on one of the threaded rods 41 and meshed with the driving gear 52. In this embodiment, the output shaft of the motor 51 passes through the outer wall of the annular mounting seat 3 and is rotatably connected to the annular mounting seat 3, the end of the threaded rod 41 close to the axis of the caisson 1 is rotatably connected to the side wall of the vertical plate 44 away from the axis of the caisson 1, the guide rod 42 passes through the slider 45 and is in clearance fit with the slider 45, the axis of the output end of the motor 51 coincides with the axis of the driving gear 52, and the axis of the driven gear 53 coincides with the axis of one of the threaded rods 41 and the axis of the driven bevel gear 47 sleeved on the threaded rod 41.

[0032] When the caisson 1 needs to be supported in a vertical state during its descent, the staff can drive the multiple groups of support components 4 to cooperate through the driving source 5, so that the annular platform 2 can remain in a completely vertical state during the descent under the action of gravity, which changes the existing design method of supporting the caisson 1 in a vertical state by multiple hydraulic jacks, and fully reduces the probability of the caisson 1 being difficult to maintain a completely vertical state during the descent.

[0033] Before the caisson 1 needs to be lowered, the staff needs to start the motor 51 first. After the motor 51 is started, it drives the driving gear 52 to rotate, and the driving gear 52 rotates to drive the driven gear 53 to rotate. The driven gear 53 drives one of the threaded rods 41 to rotate, and the threaded rod 41 drives the driven bevel gear 47 and the annular bevel gear 32 on the threaded rod 41 to rotate, and the annular bevel gear 32 drives other threaded rods 41 to rotate. Affected by the circumferential limit of the guide rod 42, the rotation of the threaded rod 41 drives the slider 45 to move toward the side away from the axis of the caisson 1, so that the slider 45 drives the support block 46 to move. Since the arc surface 461 on the support block 46 abuts against the arc surface at the bottom of the annular platform 2, the inner ring of the annular platform 2 fits against the outer wall of the caisson 1, and the annular platform 2 and the caisson 1 are fixed by the fixing member 11, it plays a good limiting role on the caisson 1 in other directions, so that the caisson 1 can slowly sink in the vertical direction.

[0034] In order to reduce the probability that the annular platform 2 is obstructed by the vertical plate 44 during the sinking process of the caisson 1, making it difficult for the caisson 1 to continue to descend, a clearance groove 21 is provided at the position corresponding to the vertical plate 44 on the side wall of the annular platform 2 to prevent the vertical plate 44 from obstructing the sinking of the caisson 1.

[0035] A sliding groove 331 that slides with the slider 45 is provided at a position corresponding to the cover plate 33 and the slider 45. During the slow sinking of the caisson 1, the slider 45 will move toward the side away from the axis of the caisson 1. The setting of the sliding groove 331 on the cover plate 33 plays a good role in giving way to the slider 45.

[0036] The working principle of a reaction force correction support structure for caisson construction in the present embodiment is as follows: when the caisson 1 is lowered and needs to be supported in a vertical state, the staff needs to start the motor 51 first. After the motor 51 is started, it drives the driving gear 52 to rotate, and the driving gear 52 rotates to drive the driven gear 53 to rotate. The driven gear 53 drives one of the threaded rods 41 to rotate, and the threaded rod 41 drives the driven bevel gear 47 and the annular bevel gear 32 on the threaded rod 41 to rotate, and the annular bevel gear 32 drives the other threaded rods 41 to rotate. Affected by the circumferential limit of the guide rod 42, the threaded rod 41 rotates and drives the slider 45 to move toward the side away from the axis of the caisson 1. The annular platform 2 is moved so that the slider 45 drives the support block 46 to move. Since the arc surface 461 on the support block 46 abuts against the arc surface at the bottom of the annular platform 2, the inner circle of the annular platform 2 fits the outer wall of the caisson 1, and the annular platform 2 and the caisson 1 are fixed by the fixing member 11, which plays a good limiting role on the caisson 1 in other directions, so that the caisson 1 can slowly sink in the vertical direction, so that the annular platform 2 can maintain a completely vertical state during the descent under the action of gravity, which changes the existing design method of supporting the caisson 1 in a vertical state by multiple hydraulic jacks, and fully reduces the probability that the caisson 1 is difficult to maintain a completely vertical state during the descent.

[0037] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A reaction force correction support structure for caisson construction, comprising a caisson (1) partially inserted into a soil layer (6), characterized in that: An annular platform (2) whose outer diameter gradually decreases from top to bottom is arranged on the outer wall of the caisson (1) near its top; a fixing member (11) for fixing the annular platform (2) is arranged on the caisson (1); an annular mounting seat (3) is arranged on the soil layer (6); the inner diameter of the annular mounting seat (3) is larger than the outer diameter of the annular platform (2); and a plurality of support components (4) are arranged on the soil layer (6) which are evenly distributed about the axis of the caisson (1) and are used to correct the reaction force of the caisson (1) during construction. The plurality of support components (4) are electrically driven and share a driving source (5) to drive the annular platform (2) to maintain a completely vertical state during the descent process.

2. The reaction force correction support structure for caisson construction according to claim 1 is characterized in that: The annular mounting seat (3) is provided with an annular mounting groove (31) at the top, and an annular bevel gear (32) is rotatably mounted on the inner bottom wall of the annular mounting groove (31). Each group of the support components (4) comprises a threaded rod (41) rotatably mounted on the inner wall of the annular mounting seat (3), a guide rod (42) fixed on the inner wall of the annular mounting seat (3), a horizontal plate (43) fixed on the inner wall of the annular mounting seat (3) at a position close to the bottom of the annular mounting seat (3), a vertical plate (44) fixed on the top of the horizontal plate (43), a slider (45) sleeved on the threaded rod (41) and threadedly connected to the threaded rod (41), a support block (46) fixed on the top of the slider (45), and a driven bevel gear (47) fixedly sleeved on the threaded rod (41) and meshed with the annular bevel gear (32). The support block (46) is provided with an arc surface (461) on the top that matches and abuts against the bottom of the annular platform (2). The driving source (5) comprises a motor (51) fixed on the outer wall of the annular mounting seat (3), the output shaft of the motor (51) passing through the outer wall of the annular mounting seat (3) and being rotatably connected to the annular mounting seat (3), the driving source (5) further comprises a driving gear (52) fixed on the output shaft of the motor (51) and a driven gear (53) fixedly sleeved on one of the threaded rods (41) and meshing with the driving gear (52), one end of the threaded rod (41) close to the axis of the caisson (1) is rotatably connected to the side wall of the vertical plate (44) away from the axis of the caisson (1), and the guide rod (42) passes through the slider (45) and is clearance-matched with the slider (45).

3. The reaction force correction support structure for caisson construction according to claim 1 is characterized in that: A cover plate (33) is arranged on the top of the annular mounting seat (3), and a slide groove (331) which is slidably matched with the slide block (45) is arranged at a position of the cover plate (33) corresponding to the slide block (45).

4. The reaction force correction support structure for caisson construction according to claim 3 is characterized by: An anchor rod (34) is provided through the cover plate (33) and is loosely matched with the cover plate (33). The lower end of the anchor rod (34) is inserted into the soil layer (6). The anchor rod (34) passes through the annular mounting seat (3) and is loosely matched with the annular mounting seat (3).

5. The reaction force correction support structure for caisson construction according to claim 1 is characterized by: A clearance groove (21) is provided at a position corresponding to the vertical plate (44) on the side wall of the annular platform (2) to prevent the vertical plate (44) from hindering the sinking of the caisson (1).

6. The reaction force correction support structure for caisson construction according to claim 1 is characterized by: The fixing member (11) is a bolt that penetrates the inner wall of the caisson (1) and is clearance-matched with the caisson (1), and the end of the bolt is threadedly connected to the side wall of the annular platform (2) close to the axis of the caisson (1).

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