Open caisson inclination correction structure based on bottom support and top ballasting

Abstract

The utility model relates to the technical field of open caisson construction, in particular to an open caisson inclination deviation rectifying structure based on bottom supporting and top ballasting. The device mainly comprises a monitoring control system, top ballasting equipment and a bottom supporting piece. The monitoring control system is used for monitoring the posture of the open caisson, judging the inclination grade of the open caisson, sending out a corresponding working instruction, adjusting the top ballasting equipment to be located in a target working area, and guiding on-site constructors to reasonably arrange bottom supporting pieces. Therefore, the sinking speed of each part of the open caisson is adjusted, and the purpose of deviation rectification is achieved. The method is suitable for deviation rectification of the open caisson under various geological conditions, and is wide in application range, low in cost, convenient to operate and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of caisson construction, in particular to a caisson inclination correction structure based on bottom support and top weight. Background Art

[0002] Caisson construction is a method used to carry out foundation engineering deep in the soil or water. This process is often used in the foundations of structures such as buildings, bridges, and dams. In the caisson process, a large cylindrical or square box made of reinforced concrete or steel, called a caisson or fixed caisson, is first prepared, which is used to drill a hole in the foundation and reach the required depth. The caisson is usually hollowed out or bored through the bottom of the lake by continuously digging soil or other materials from the middle, and then sinking it to the depth of the foundation. In some cases, workboats or special equipment are used to sink the caisson to the required depth. Once the caisson reaches the location, concrete or other materials are poured to fill the void and support the foundation structure. Caisson construction can cut off groundwater sources where large structures need to be built, and deep-water construction can be carried out by providing a closed and flat working surface. At the same time, it can also reduce pollution to water sources and avoid dangerous gas leaks. This process is also used in infrastructure projects such as building foundations, bridge piers, and submarine pipelines.

[0003] During the construction process, the tilt of the caisson body is one of the most common problems, which may be caused by uneven soil layers, inappropriate excavation sequence and speed, etc. The tilt of the well body will endanger construction safety on the one hand, and will also have an adverse impact on the quality, progress and cost of the project on the other hand. Especially when the tilt exceeds a certain degree, it may be impossible to correct the deviation and the entire well body may be abandoned, which will have a huge impact on the project. Therefore, a correction structure that can effectively control the tilt of the caisson and is convenient for construction is very necessary. Utility Model Content

[0004] In order to solve the above problems of the prior art, the utility model designs a caisson tilt correction structure based on bottom support and top weight. The structure adjusts the top weight equipment to the target working area and arranges the bottom support parts reasonably. In this way, the sinking speed of each part of the caisson is adjusted to achieve the purpose of correction.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A caisson tilt correction structure based on bottom support and top weight mainly includes three parts: monitoring control system, top weight equipment and bottom support. The monitoring control system is used to monitor the caisson posture and determine its tilt level; the top weight equipment is installed on the top of the caisson wall plate and selects the target weight area according to the control command; the bottom support is deployed by the on-site construction personnel according to the control command and set at the cutting edge of the target area.

[0007] Furthermore, the top ballast equipment includes three parts: a track, a ballast vehicle, and a ballast object.

[0008] Furthermore, the track is fixed to the top of the caisson wall and arranged in the center.

[0009] Furthermore, the ballast truck is installed on a track and can move along the track or be fixed at a certain position of the track. The movement or fixation of the ballast truck is regulated by a monitoring and control system.

[0010] Furthermore, the ballast is placed in a ballast vehicle, and the material and weight of the ballast are selected according to the engineering conditions.

[0011] Furthermore, a full-length recess is provided above the cutting edge of the caisson, and the depth and width of the recess should meet the installation requirements of the support member.

[0012] Furthermore, after the caisson is sunk, the recess is also used as the installation position for pouring the bottom plate. Grouting pipes are pre-buried above the recess. When pouring the bottom plate, grout is pressed into the recess through the grouting pipe to ensure that the top surface of the recess is densely filled with concrete.

[0013] Furthermore, the support member includes three parts: a cantilever beam, a vertical plate, and an enlarged bottom.

[0014] Furthermore, the support member may be made of steel, or other materials that meet the bearing capacity requirements and are easy to construct.

[0015] Furthermore, the total height of the support member is equal to the distance from the top surface of the recess to the bottom surface of the blade foot.

[0016] Furthermore, the height of the cantilever beam is slightly smaller than the width of the notch, and the width of the cantilever beam is slightly larger than the depth of the notch.

[0017] Furthermore, the length of each support member should be controlled within 500 mm to 800 mm for easy transportation and installation.

[0018] Correspondingly, this solution also provides a caisson tilt correction method based on bottom support and top weight, which includes the following steps:

[0019] Arrange monitoring and control systems;

[0020] The tilt level is determined based on the shape, size, depth, geological conditions and surrounding environment of the caisson; wherein the tilt levels are divided into normal state, first-level tilt and second-level tilt according to the tilt angle from small to large;

[0021] The track is fixed on the top of the caisson wall, arranged in the center, and the ballast vehicle is installed on the track; the movement or fixation of the ballast vehicle is controlled by the monitoring and control system;

[0022] Prepare the finished support parts in a location where construction workers can obtain them at any time;

[0023] A full-length notch and grouting pipe are provided above the cutting edge of the caisson. The depth and width of the notch should meet the installation requirements of the support.

[0024] During the construction process, adjust the weight of the ballast in the ballast vehicle according to the actual situation;

[0025] Adjust the on-site construction status according to the instructions of the monitoring and control system.

[0026] Furthermore, the monitoring and control system should be able to monitor the caisson's posture in real time, calculate its inclination and determine the current inclination level of the caisson.

[0027] Furthermore, the classification of the inclination grades should be determined comprehensively based on the caisson shape, size, depth, geological conditions and surrounding environmental conditions.

[0028] Furthermore, the tilt levels are divided into normal state, first-level tilt, and second-level tilt according to the tilt angle from small to large.

[0029] Furthermore, when the current inclination level of the caisson is in a normal state, the on-site construction status is: the ballast vehicle moves at a constant speed along the track, the bottom of the blade foot maintains normal excavation, and the support members are not used.

[0030] Furthermore, when the current inclination grade of the caisson is level one, the on-site construction status is: the ballasting vehicle is fixed at the highest elevation of the top surface of the caisson wall, excavation is concentrated at the highest elevation of the bottom of the blade foot, excavation is suspended at the lowest elevation of the bottom of the blade foot, and the support parts are not used.

[0031] Furthermore, when the current inclination grade of the caisson is level 2, the on-site construction status is: the ballasting vehicle is fixed at the highest elevation of the top surface of the caisson wall, excavation is concentrated at the highest elevation of the bottom of the blade foot, excavation is suspended at the lowest elevation of the bottom of the blade foot, and the support is installed at the lowest elevation of the bottom of the blade foot.

[0032] Compared with the prior art, the invention has the following beneficial effects:

[0033] The top ballast equipment can change the center of gravity of the caisson to a certain extent by applying ballast to the top of the caisson. The position of the ballast vehicle and the amount of ballast applied can be adjusted by the command of the monitoring and control system to correct the caisson. The installation position and number of bottom supports can be adjusted according to the command of the monitoring and control system. When the caisson tilts, the supports can be set at the lowest elevation of the bottom of the blade to provide additional support and stability to offset the tilt of the caisson.

[0034] The track is fixed to the top of the caisson wall, and the ballast can be moved along the track or fixed in a certain position. By adjusting the position of the ballast and the amount of ballast applied, the center of gravity of the caisson can be changed, thereby correcting its deviation. The support is designed with a specific shape and size to fit the notch at the bottom of the blade foot. This design ensures that the support is firmly installed and provides effective support.

[0035] This type of structure is suitable for the correction of caissons under various geological conditions. It has a wide range of applications, good correction effects, low costs, convenient operation, and strong practicality. The top weight equipment and bottom support parts used can be reused, meeting the requirements of green and low-carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a top view of the arrangement of the weight facilities on the top of the circular caisson in a specific implementation manner;

[0037] Figure 2 It is a top view of the arrangement of the weight facilities on the top of the rectangular caisson in a specific implementation method;

[0038] Figure 3 It is a side view of the arrangement of the weight facilities on the top of the caisson in a specific implementation manner;

[0039] Figure 4 It is a cross-sectional view of the bottom wall plate structure of the caisson in a specific implementation manner;

[0040] Figure 5 It is a cross-sectional view of a support member in a specific implementation manner;

[0041] Figure 6 It is a diagram showing the installation position relationship of the support member in a specific implementation manner;

[0042] Figure 7 It is a diagram of the implementation scheme for the first-level tilt state of the caisson body in a specific implementation method;

[0043] Figure 8 It is a diagram showing the implementation plan for the secondary inclination state of the caisson body in a specific implementation method.

[0044] Among them, 1-caisson wall, 2-track, 3-ballast vehicle, 4-notch, 5-grouting pipe, 6-support, 7-cantilever beam, 8-vertical board, 9-enlarged bottom, 10-ballast object. DETAILED DESCRIPTION

[0045] The utility model is further described in conjunction with the accompanying drawings, but is not intended to limit the utility model.

[0046] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] In the present invention, terms such as "upper", "lower", "left", "right", "side", "end" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0049] In the present utility model, terms such as "fixed connection" and "connection" should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present utility model can be determined according to specific circumstances, and they cannot be understood as limitations on the present utility model.

[0050] See also Figure 1-6 , a caisson tilt construction control method based on bottom support and top weight is designed. The method mainly includes three parts: monitoring and control system, top weight equipment and bottom support 6. The monitoring and control system includes a tilt sensor, which can detect the degree of inclination by measuring the inclination angle of the caisson or shaft on the horizontal plane, and is used to monitor the posture of the caisson and judge its inclination grade; the top weight equipment is installed on the top of the caisson wall plate 1, and the target weight area is selected according to the control instruction; the bottom support 6 is deployed by the on-site construction personnel according to the control instruction and set at the cutting edge of the target area. The sinking speed of each part of the caisson is adjusted by the above measures to achieve the purpose of deviation correction.

[0051] In this embodiment, the monitoring and control system should be able to monitor the caisson posture in real time, calculate its inclination and determine the current inclination level of the caisson. The monitoring and control system includes an inclination sensor, which is installed on the caisson structure. The inclination sensor is used to measure the inclination angle of the shaft on the horizontal plane and is wirelessly connected to the device through a communication module.

[0052] In this embodiment, the top ballast equipment includes three parts: track 2, ballast vehicle 3, and ballast object 10. Track 2 is fixed to the top of the caisson wall 1 and arranged in the center. Ballast vehicle 3 is installed on track 2 and can move along the track or be fixed at a certain position on the track. The movement or fixation of ballast vehicle 3 is controlled by the monitoring and control system. Ballast object 10 is placed in ballast vehicle 3, and the material and weight of ballast object 10 are determined according to the engineering conditions.

[0053] In this embodiment, the support member 6 includes three parts: a cantilever beam 7, a vertical plate 8, and an enlarged bottom 9. The material of the support member 6 can be steel, or other materials that meet the bearing capacity requirements and are convenient for construction. The total height of the support member 6 is equal to the distance from the top surface of the recess 4 to the bottom surface of the blade foot. The height of the cantilever beam 7 is slightly smaller than the width of the recess 4, and the width of the cantilever beam 7 is slightly larger than the depth of the recess 4. The single length of the support member 6 should be controlled within 500mm to 800mm for easy transportation and installation.

[0054] The following describes how to use this method, which includes the following steps:

[0055] The first step is to arrange the monitoring and control system.

[0056] The second step is to comprehensively determine the inclination grade based on the caisson shape, size, depth, geological conditions and surrounding environment.

[0057] The third step is to fix the track 2 on the top of the caisson wall 1, arrange it in the center, and install the ballast vehicle 3 on the track 2. The movement or fixation of the ballast vehicle 3 is regulated by the monitoring and control system.

[0058] The fourth step is to prepare the finished support parts in a location where construction personnel can obtain them at any time.

[0059] The fifth step is to provide a through-length recess 4 and a grouting pipe 5 above the cutting edge of the caisson. The depth and width of the recess 4 should meet the installation requirements of the support member 6.

[0060] Step 6: During the construction process, the weight of the ballast 10 in the ballast vehicle 3 is adjusted according to the actual situation.

[0061] Step 7: Adjust the on-site construction status according to the instructions of the monitoring and control system:

[0062] (1) When the current inclination level of the caisson is normal, the on-site construction status is: the ballast vehicle 3 moves at a constant speed along the track 2, the bottom of the blade foot maintains normal excavation, and the support member 6 is not used.

[0063] (2) When the current inclination grade of the caisson is level one, the on-site construction status is: the ballast vehicle 3 is fixed at the highest elevation of the top surface of the caisson wall 1, the highest elevation of the bottom of the blade foot is concentrated for excavation, and the lowest elevation of the bottom of the blade foot is suspended for excavation, and the support member 6 is not used.

[0064] (3) When the current inclination grade of the caisson is the second grade, the on-site construction status is: the ballast vehicle 3 is fixed at the highest elevation of the top surface of the caisson wall 1, the highest elevation of the bottom of the blade foot is concentrated for excavation, the lowest elevation of the bottom of the blade foot is suspended, and the support member 6 is installed at the lowest elevation of the bottom of the blade foot.

[0065] When the caisson tilts, the monitoring and control system will detect the tilt and guide the adjustment of the top weight equipment and the bottom support according to the tilt level. By applying weight and setting support, the center of gravity of the caisson can be changed to return to a normal state. Therefore, the structure and method in this scheme can effectively correct the tilt of the caisson.

Claims

1. The caisson tilt correction structure based on bottom support and top weight is characterized by: The invention comprises a monitoring and control system, a top ballast device and a bottom support member (6); wherein the monitoring and control system is used to monitor the posture of the caisson; the top ballast device is installed on the top of the caisson wall (1); the bottom support member (6) is arranged at the edge of the target area; the top ballast device comprises a track (2), a ballast vehicle (3), and a ballast object (10); the track (2) is fixed to the top of the caisson wall (1) and arranged in the center; the ballast vehicle (3) is installed on the track (2) and can be moved along the track or fixed at a certain position on the track; the ballast object (10) is placed in the ballast vehicle (3).

2. The caisson tilt correction structure based on bottom support and top weight according to claim 1 is characterized in that: A full-length recess (4) is provided above the cutting edge of the caisson, and the depth and width of the recess (4) should meet the installation requirements of the support member (6); after the caisson is sunk, the recess (4) is also used as the installation position for pouring the bottom plate; and a grouting pipe (5) is pre-buried above the recess (4).

3. The caisson tilt correction structure based on bottom support and top weight according to claim 1 is characterized in that: The support member (6) comprises a cantilever beam (7), a vertical plate (8), and an enlarged bottom (9); the support member (6) is made of steel; the total height of the support member (6) is equal to the distance from the top surface of the recess (4) to the bottom surface of the blade foot; the height of the cantilever beam (7) is less than the width of the recess (4), and the width of the cantilever beam (7) is greater than the depth of the recess (4).

4. The caisson tilt correction structure based on bottom support and top weight according to claim 1 is characterized in that: The single length of the support member (6) is controlled within the range of 500 mm to 800 mm.

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