Assembly type sinking stopping device for open caisson

Abstract

The utility model discloses a fabricated open caisson sinking stopping device, and relates to the technical field of open caisson construction. The assembly type sinking stopping device for the open caisson comprises a sinking stopping supporting seat, a sinking stopping movable shaft in sliding connection with the sinking stopping supporting seat, a sinking stopping block fixedly connected with one end of the sinking stopping movable shaft, and a sinking stopping driving mechanism for driving the sinking stopping movable shaft to move in the axial direction of the sinking stopping movable shaft. A plurality of steel bar cross arms are fixed to the sinking stopping steel bars at intervals in the axial direction of the sinking stopping steel bars, and the steel bar cross arms are used for being supported on the sinking stopping blocks. According to the assembly type sinking stopping device for the open caisson provided by the embodiment of the invention, the installed segment ring can be fixed in the gap of the segment ring after the sinking device is pressed down, the installed segment ring is prevented from shifting, and the construction quality of the open caisson is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of open caisson construction, in particular to an assembled open caisson sinking stop device. BACKGROUND

[0002] With the acceleration of urbanization, the development and utilization of urban underground space has become an important direction of urban construction. As a commonly used structure in underground foundation construction, the open caisson can form a stable structural foundation underground and is widely used.

[0003] The traditional open caisson construction method relies on the gravity of the open caisson to overcome the frictional resistance of the well wall, so as to achieve the purpose of sinking to the design elevation. However, with the increasing requirements for construction efficiency and cost control, the traditional open caisson construction method has gradually failed to meet the needs of modern urban construction.

[0004] At present, the assembled open caisson construction method is commonly used, that is, prefabricated segments are assembled into a ring on site, and then each segment ring is sequentially sunk to the specified position by using a sinking device. However, when construction is carried out in complex strata, the installed segment ring is prone to displacement after the gap of the segment ring under the pressure of the sinking device, thereby causing changes in the sinking trajectory and affecting the construction quality of the open caisson. CONTENT OF THE INVENTION

[0005] The application aims to provide an assembled open caisson sinking stop device to solve the problem of displacement of the segment ring.

[0006] The technical scheme adopted by the application to solve the technical problem is:

[0007] An assembled open caisson sinking stop device, comprising a sinking support seat, a sinking movable shaft in sliding connection with the sinking support seat, a sinking block in fixed connection with one end of the sinking movable shaft, and a sinking driving mechanism for driving the sinking movable shaft to move along its axial direction; further comprising a sinking steel bar vertically arranged and used for connecting with the segment ring, a plurality of steel bar cross arms being fixed on the sinking steel bar along its axial direction, and the steel bar cross arms being used for supporting on the sinking block.

[0008] Further, the sinking block is provided with a steel bar groove on the side away from the sinking movable shaft for the sinking steel bar to pass through.

[0009] Further, the sinking driving mechanism comprises a sinking telescopic cylinder and a sinking connecting block, one end of the sinking telescopic cylinder being connected with the sinking support seat, and the other end of the sinking telescopic cylinder being connected with the sinking movable shaft through the sinking connecting block.

[0010] Further, the sinking block and the sinking connecting block are respectively arranged at both ends of the sinking movable shaft.

[0011] Further, a sinking stopping lifting support base is arranged below the sinking stopping support base.

[0012] Further, the sinking stopping lifting support base comprises a front end lifting base and a rear end support base arranged along the axial direction of the sinking movable shaft, the front end lifting base is arranged at one end of the sinking stopping support base close to the sinking block, and the rear end support base is arranged at one end of the sinking stopping support base away from the sinking block.

[0013] Further, the front end lifting base comprises a front end fixed block connected with the sinking stopping support base and a front end lifting cylinder hinged with the front end fixed block.

[0014] Further, the front end lifting base comprises two front end lifting cylinders, and the two front end lifting cylinders are arranged at two sides of the sinking stopping support base respectively.

[0015] Further, the rear end support base comprises a rear end extension rod connected with the sinking stopping support base, a rear end support rod hinged with the rear end extension rod, and a rear end base hinged with the rear end support rod.

[0016] Further, the rear end support rod comprises a rear end lifting cylinder.

[0017] The beneficial effects of the present application are as follows:

[0018] The assembled sinking well sinking stopping device provided by the embodiment of the present application can fix the installed segmental ring after the sinking device presses the gap of the segmental ring, avoid displacement of the installed segmental ring, and improve the construction quality of the sinking well. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0020] Figure 1 is a state diagram of the assembled sinking well during construction;

[0021] Figure 2 is a perspective view of the sinking stopping device provided by the embodiment of the present application;

[0022] Figure 3 is a front view of Figure 2 ;

[0023] Figure 4 is a top view of Figure 2 .

[0024] Reference signs:

[0025] 1 - sinking device;

[0026] 2 - sinking stopping device;

[0027] 21 - sinking stopping support seat;

[0028] 22 - sinking stopping movable shaft;

[0029] 23 - sinking stopping block;

[0030] 231 - steel bar groove;

[0031] 24 - sinking stopping driving mechanism;

[0032] 241 - sinking stopping telescopic cylinder;

[0033] 242 - sinking stopping connecting block;

[0034] 243 - first sinking stopping hinge shaft;

[0035] 244 - second sinking stopping hinge shaft;

[0036] 25 - front end lifting seat;

[0037] 251 - front end fixed block;

[0038] 252 - front end lifting cylinder;

[0039] 253 - third sinking stopping hinge shaft;

[0040] 26 - rear end support seat;

[0041] 261 - rear end extension rod;

[0042] 262 - rear end support rod;

[0043] 263 - rear end base;

[0044] 264 - fourth sinking stopping hinge shaft;

[0045] 265 - fifth sinking stopping hinge shaft;

[0046] 3 - sinking steel bar;

[0047] 31 - steel bar cross arm;

[0048] 4 - segment ring. DETAILED DESCRIPTION

[0049] With reference to the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should fall into the scope of protection of the present application. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0050] In the description of the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like is the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified, the above orientation description can be flexibly arranged in the actual application process under the condition of meeting the relative positional relationship shown in the drawings.

[0051] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect", "connect" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] The fabricated caisson is assembled on site by prefabricated components, has the advantages of fast construction speed, low cost, small environmental impact, etc. The segment caisson, as a kind of fabricated caisson, is composed of interconnected segment rings, and has higher flexibility and adaptability.

[0053] Referring to Figure 1 , the construction method of the fabricated caisson is to assemble prefabricated segments into rings at the construction site, and to sequentially sink each segment ring 4 to the specified position by using the sinking device 1. However, when constructing in a complex stratum, the next segment ring 4 needs to be moved to the previously installed segment ring 4 before the sinking device 1 presses the next segment ring 4. In this process, the installed segment ring is prone to displacement, which in turn causes the sinking trajectory of the segment ring 4 to change, affecting the construction quality of the caisson.

[0054] Based on this, the embodiments of the present application provide a fabricated caisson sinking stop device, which can fix the installed segment ring 4 in the gap between the sinking device 1 and the next segment ring 4, avoid the displacement of the installed segment ring 4, and improve the construction quality of the caisson.

[0055] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 The embodiment of the present application provides an assembled sinking well sinking stop device 2, which comprises a sinking stop support seat 21, a sinking movable shaft 22 in sliding connection with the sinking stop support seat 21, a sinking block 23 in fixed connection with one end of the sinking movable shaft 22, and a sinking driving mechanism 24 for driving the sinking movable shaft 22 to move along the axial direction thereof; further comprising sinking steel bars 3 arranged vertically and used for being connected with a pipe segment ring 4, a plurality of steel bar cross arms 31 are fixed on the sinking steel bars 3 along the axial direction thereof, and the steel bar cross arms 31 are used for being supported on the sinking block 23.

[0056] During construction, referring to Figure 1 , a plurality of sinking devices 2 and a plurality of sinking steel bars 3 are arranged around the sinking well construction position on the reinforced concrete foundation, wherein the sinking stop support seat 21 is fixed on the foundation, the axial direction of the sinking movable shaft 22 is parallel to the radial direction of the pipe segment ring 4, the sinking block 23 faces the pipe segment ring 4, the sinking steel bars 3 are arranged vertically and are attached to the outer surface of the pipe segment ring 4, and the lower end of the sinking steel bars 3 is fixedly connected with the first pipe segment ring 4; after the previous pipe segment ring 4 is sunk into position by using the sinking device 1, the sinking movable shaft 22 is driven by the sinking driving mechanism 24 to drive the sinking block 23 to approach the pipe segment ring 4, and the sinking block 23 is supported below the steel bar cross arm 31, so that the installed pipe segment ring 4 can be fixed and supported by using a plurality of sinking devices 2 to prevent the installed pipe segment ring 4 from sinking and shifting; after the next pipe segment ring 4 is moved to the previously installed pipe segment ring 4, the sinking movable shaft 22 is driven by the sinking driving mechanism 24 to drive the sinking block 23 to move away from the pipe segment ring 4, the sinking block 23 is separated from the steel bar cross arm 31, and then the next pipe segment ring 4 is sunk into position by using the sinking device 1.

[0057] Compared with the prior art, the assembled sinking well sinking stop device provided by the embodiment of the present application can fix and sink the installed pipe segment ring 4 in the pressing gap of the sinking device 1, can avoid the installed pipe segment ring 4 from shifting, can ensure that the sinking trajectory of the pipe segment ring 4 does not change, and can improve the construction quality of the sinking well.

[0058] Referring to Figure 1 , in order to improve the strength of the sinking steel bars 3, a plurality of sinking steel bars 3 are fixedly connected by the steel bar cross arms 31 to form a group, and each group of sinking steel bars 3 is used for cooperating with one sinking device 2. For example, four sinking steel bars 3 are fixedly connected by the steel bar cross arms 31 to form a group, so that the strength of the sinking steel bars 3 can be improved.

[0059] The lower end of the sinking stopper 3 can be connected with a bending part bent to the lower end of the first segmental pipe piece ring 4. During construction, the bending part is only needed to be placed below the first segmental pipe piece ring 4, so that the sinking stopper 3 and the first segmental pipe piece ring 4 are fixedly connected, and the convenience of construction is improved. The bending part can be a hook-shaped structure, so that the sinking stopper 3 can be hung on the lower end of the first segmental pipe piece ring 4 during construction.

[0060] In some embodiments, referring to Figure 2 、 Figure 4 , the sinking block 23 is provided with a steel bar groove 231 for the sinking stopper 3 to pass through on the side away from the sinking movable shaft 22. Correspondingly, the steel bar groove 231 can not only position the sinking stopper 3, but also improve the contact area between the sinking block 23 and the steel bar cross arm 31, and improve the reliability of sinking the installed pipe piece ring 4.

[0061] In some embodiments, referring to Figure 2 、 Figure 3 、 Figure 4 , the sinking support base 21 is a cuboid structure made of a steel plate, the sinking movable shaft 22 is horizontally arranged and penetrates through the sinking support base 21, and the sinking movable shaft 22 is connected with the sinking support base 21 through a sliding bearing, so that the sinking movable shaft 22 can reciprocate along the axial direction of itself. The sinking driving mechanism 24 is connected between the sinking support base 21 and the sinking movable shaft 22, and is used for providing power to drive the sinking movable shaft 22 to reciprocate. The sinking driving mechanism 24 can include a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

[0062] In some embodiments, referring to Figure 2 、 Figure 3 、 Figure 4 , the sinking driving mechanism 24 includes a sinking telescopic cylinder 241 and a sinking connecting block 242. One end of the sinking telescopic cylinder 241 is connected with the sinking support base 21, and the other end of the sinking telescopic cylinder 241 is connected with the sinking movable shaft 22 through the sinking connecting block 242. The sinking block 23 and the sinking connecting block 242 are respectively arranged at the two ends of the sinking movable shaft 22.

[0063] Specifically, the sinking block 23 is fixed at the left end of the sinking movable shaft 22, the sinking connecting block 242 is fixed at the right end of the sinking movable shaft 22, and the sinking telescopic cylinder 241 is parallel to the sinking movable shaft 22 and arranged above the sinking support base 21; the cylinder body of the sinking telescopic cylinder 241 is hinged with the sinking support base 21 through a first sinking hinge shaft 243, and the piston rod of the sinking telescopic cylinder 241 is hinged with the sinking connecting block 242 through a second sinking hinge shaft 244. The sinking telescopic cylinder 241 can be a hydraulic cylinder or a pneumatic cylinder. The first sinking hinge shaft 243 is horizontally arranged and perpendicular to the sinking movable shaft 22, and the second sinking hinge shaft 244 is parallel to the first sinking hinge shaft 243.

[0064] During operation, the piston rod of the anti-sinking telescopic cylinder 241 is controlled to extend or retract, so as to drive the anti-sinking movable shaft 22 to reciprocate along the axial direction of the anti-sinking movable shaft 22, and then drive the anti-sinking block 23 to move away from or close to the segment ring 4.

[0065] In some embodiments, the anti-sinking support base 21 is provided below with an anti-sinking lifting support base. During construction, the anti-sinking lifting support base is installed on the foundation, and the height of the anti-sinking support base 21 can be adjusted by using the anti-sinking lifting support base, so as to realize the adjustment of the height of the anti-sinking block 23.

[0066] In some cases, when the segment ring 4 of the previous section is sunk into place by using the sinking device 1, the height difference between the reinforcing cross arm 31 and the anti-sinking block 23 may occur. At this time, the height of the anti-sinking support base 21 can be adjusted by using the anti-sinking lifting support base, so as to achieve the purpose of adjusting the height of the anti-sinking block 23, so as to eliminate the height difference between the anti-sinking block 23 and the reinforcing cross arm 31, and then reliably support the reinforcing cross arm 31 on the anti-sinking block 23, further improving the flexibility of operation and the reliability of sinking.

[0067] In some embodiments, referring to Figure 2 , Figure 3 , Figure 4 , the anti-sinking lifting support base includes a front end lifting seat 25 and a rear end support seat 26 which are spaced apart along the axial direction of the anti-sinking movable shaft 22. The front end lifting seat 25 is arranged at one end of the anti-sinking support base 21 close to the anti-sinking block 23, and the rear end support seat 26 is arranged at one end of the anti-sinking support base 21 away from the anti-sinking block 23. During construction, the front end lifting seat 25 and the rear end support seat 26 are installed on the foundation, and the height of the end of the anti-sinking support base 21 close to the anti-sinking block 23 can be adjusted by using the front end lifting seat 25, so as to realize the adjustment of the height of the anti-sinking block 23.

[0068] For example, the front end lifting seat 25 includes a front end fixed block 251 connected with the anti-sinking support base 21 and a front end lifting cylinder 252 hinged with the front end fixed block 251. The front end lifting cylinder 252 is a vertically arranged hydraulic cylinder or air cylinder, the cylinder body of the front end lifting cylinder 252 is used to be fixed on the foundation by bolts, and the piston rod of the front end lifting cylinder 252 is hinged with the front end fixed block 251 through a third anti-sinking hinge shaft 253, the third anti-sinking hinge shaft 253 is horizontally arranged and perpendicular to the anti-sinking movable shaft 22.

[0069] Exemplarily, the rear end support base 26 comprises a rear end extension rod 261 connected with the sink-stop support base 21, a rear end support rod 262 hinged with the rear end extension rod 261, and a rear end base 263 hinged with the rear end support rod 262. The rear end extension rod 261 is hinged with the rear end support rod 262 through a fourth sink-stop hinge shaft 264, the rear end support rod 262 is hinged with the rear end base 263 through a fifth sink-stop hinge shaft 265, and the rear end base 263 is used for being fixed on the foundation. The fourth sink-stop hinge shaft 264 is horizontally arranged and perpendicular to the sink-stop movable shaft 22, and the fifth sink-stop hinge shaft 265 is parallel to the fourth sink-stop hinge shaft 264.

[0070] In operation, by controlling the piston rod of the front end lifting cylinder 252 to be extended or retracted, the sink-stop support base 21 can be rotated around the third sink-stop hinge shaft 253, and the height of the sink-stop block 23 can be adjusted.

[0071] The front end lifting base 25 comprises two front end lifting cylinders 252, which are arranged on the two sides of the sink-stop support base 21, respectively. Correspondingly, the two front end lifting cylinders 252 can provide greater force, and the sink-stop support base 21 is located between the two front end lifting cylinders 252, so that the force balance of the sink-stop support base 21 is ensured, the inclination of the sink-stop support base 21 in the supporting process is avoided, and the reliability of the sink-stop support is improved.

[0072] In some embodiments, the rear end support rod 262 comprises a rear end lifting cylinder. Correspondingly, the rear end support base 26 can form a lifting base by using the rear end lifting cylinder, and the height of the sink-stop support base 21 can be adjusted together with the front end lifting base 25, so that the flexibility of the height adjustment is improved.

[0073] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical range disclosed in the present application can be easily thought by those skilled in the art, and should be covered in the protection scope of the present application.

Claims

1. A fabricated caisson sinking stopper device, characterized by, The application relates to a sinking-stopping support seat (21), a sinking-stopping movable shaft (22) in sliding connection with the sinking-stopping support seat (21), a sinking-stopping block (23) in fixed connection with one end of the sinking-stopping movable shaft (22), and a sinking-stopping driving mechanism (24) for driving the sinking-stopping movable shaft (22) to move along the axial direction; the sinking-stopping steel bars (3) are vertically arranged and used for being connected with segmental rings (4), a plurality of steel bar cross arms (31) are fixed on the sinking-stopping steel bars (3) along the axial direction, and the steel bar cross arms (31) are used for being supported on the sinking-stopping block (23).

2. The assembled open caisson sinking stop device according to claim 1, characterized in that, The sinking-stopping block (23) is provided with a steel bar groove (231) on the side away from the sinking-stopping movable shaft (22) and used for allowing the sinking-stopping steel bars (3) to pass through.

3. The assembled sinking well sinking stopping device according to claim 1, characterized in that, The sinking-stopping driving mechanism (24) comprises a sinking-stopping telescopic cylinder (241) and a sinking-stopping connecting block (242), one end of the sinking-stopping telescopic cylinder (241) is connected with the sinking-stopping support seat (21), and the other end of the sinking-stopping telescopic cylinder (241) is connected with the sinking-stopping movable shaft (22) through the sinking-stopping connecting block (242).

4. The assembled sinking well sinking stopping device according to claim 3, characterized in that, The sinking-stopping block (23) and the sinking-stopping connecting block (242) are respectively arranged at the two ends of the sinking-stopping movable shaft (22).

5. The assembled sinking well sinking stopping device according to claim 1, characterized in that, A sinking-stopping lifting support is arranged below the sinking-stopping support seat (21).

6. The assembled caisson sinking stopper according to claim 5, characterized in that, The sinking-stopping lifting support comprises a front end lifting seat (25) and a rear end support seat (26) which are arranged at the two ends of the sinking-stopping movable shaft (22) in the axial direction, the front end lifting seat (25) is arranged at one end of the sinking-stopping support seat (21) close to the sinking-stopping block (23), and the rear end support seat (26) is arranged at one end of the sinking-stopping support seat (21) away from the sinking-stopping block (23).

7. The assembled caisson sinking stopper according to claim 6, characterized in that, The front end lifting seat (25) comprises a front end fixed block (251) connected with the sinking-stopping support seat (21) and a front end lifting cylinder (252) hinged with the front end fixed block (251).

8. The assembled caisson sinking stopper according to claim 7, characterized in that, The front end lifting seat (25) comprises two front end lifting cylinders (252) which are arranged at the two sides of the sinking-stopping support seat (21) respectively.

9. The assembled sinking well sinking stopping device according to claim 6, characterized in that, The rear end support seat (26) comprises a rear end extension rod (261) connected with the sinking-stopping support seat (21), a rear end support rod (262) hinged with the rear end extension rod (261), and a rear end base (263) hinged with the rear end support rod (262).

10. The assembled caisson sinking stopper according to claim 9, characterized in that, The rear end support rod (262) comprises a rear end lifting cylinder.

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