Open caisson structure

Abstract

The utility model provides an open caisson structure which comprises an open caisson body and a blade foot arranged at the bottom of the open caisson body, and the open caisson body comprises a first well body, a second well body, a third well body, a fourth well body and a fifth well body. Water stop steel plates are arranged at the joint of the first well body and the second well body, the joint of the second well body and the third well body, the joint of the third well body and the fourth well body and the joint of the fourth well body and the fifth well body. The open caisson structure provided by the utility model adopts a sectional structure, at least comprises a plurality of sections of open caisson bodies, is simple in structure and convenient to construct, and can be suitable for ultra-deep well sinking construction and construction in various complex terrains.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground concrete structure construction, in particular to a caisson structure suitable for ultra-deep underground concrete construction. Background Art

[0002] With the acceleration of urbanization, the number of pipeline projects for the transmission of liquid and gaseous media across roads, rivers and buildings in and outside cities is increasing, and trenchless technology has been widely used. At present, with the promotion and requirements of the separation of rainwater and sewage in underground drainage pipelines in society, the application of caissons in the construction industry is increasing. The traditional caisson is a well-shaped structure. It digs the soil in the well, relies on its own gravity to overcome the friction resistance of the well wall, and then sinks to the designed elevation. Then it is sealed with concrete and the well hole is filled to make it the foundation of bridge piers or other structures. It is generally used in the construction of foundation pits for large bridge piers, sewage pumping stations, large equipment foundations, civil air defense shelters, shield assembly wells, and underground lanes and stations. The hydraulic foundation construction enclosure device. At present, the caisson process is mostly used in the construction of underground structures, which is mainly suitable for construction in places with less permeable soil layers, shallow bedrock burials, and relatively simple geological conditions.

[0003] In the past, caisson structures were usually cast on site and sunk in one go. This method is only suitable for small, regular point-shaped foundation pits. For some linear caissons with a relatively large length and width, or irregular shaped caissons, it is difficult to implement the overall sinking method.

[0004] The south has abundant rainfall and high groundwater content in the soil. For some ultra-deep caisson structures, due to the complex geological conditions, the overall sinking method has the disadvantages of unclear underground conditions, limited working space, high requirements for concrete molding quality, and strict crack control, which cannot guarantee good construction results.

[0005] Therefore, how to design a caisson structure that can be suitable for ultra-deep operations and complex geological formations has become an important issue facing technical personnel in this field. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a caisson structure, which has a simple structure, is easy to construct, and has good waterproof properties, and can be more suitable for ultra-deep operations and construction in complex geological layers.

[0007] To achieve the above-mentioned purpose, the utility model provides a caisson structure, including a caisson body and a blade foot arranged at the bottom of the caisson body, the caisson body including a first well body, a second well body, a third well body, a fourth well body and a fifth well body; water-stop steel plates are provided at the connection between the first well body and the second well body, the connection between the second well body and the third well body, the connection between the third well body and the fourth well body, and the connection between the fourth well body and the fifth well body.

[0008] Furthermore, the caisson body includes a caisson wall, and the caisson wall includes an inner wall and an outer wall. Both the inner wall and the outer wall are reinforced concrete structures, and the space between the inner wall and the outer wall is also filled with reinforced concrete structures.

[0009] Furthermore, the caisson body is a hollow cylindrical structure, the blade foot is a structure that is wide at the top and narrow at the bottom, the bottom of the blade foot is a planar structure, and the thickness of the connection between the blade foot and the caisson body is greater than the thickness of the well wall.

[0010] Furthermore, the caisson body is a rectangular parallelepiped structure.

[0011] Furthermore, the height of the caisson body is 21.372 meters, the length is 9.2 meters, the width is 7.7 meters, and the thickness is 1.1 meters; the height of the blade foot is 3.7 meters, and the thickness of the blade foot is 1.7 meters.

[0012] Furthermore, the caisson body includes a sixth well body, the height of the caisson body is 22.751 meters, the length is 9.8 meters, the width is 8.3 meters, and the thickness is 1.2 meters; the height of the blade foot is 3.7 meters, and the thickness of the blade foot is 1.8 meters.

[0013] Furthermore, a water-stop steel plate is also provided at the junction between the fifth well body and the sixth well body.

[0014] Furthermore, the caisson body includes a sixth well body, a seventh well body and an eighth well body, and the height of the caisson body is 36.2281 meters, the length is 9.8 meters, the width is 9.3 meters, and the thickness is 1.4 meters; the height of the blade foot is 5.1 meters, and the thickness of the blade foot is 2.0 meters.

[0015] Furthermore, water-stop steel plates are also provided at the junctions between the sixth wellbore and the seventh wellbore, and at the junctions between the seventh wellbore and the eighth wellbore.

[0016] Furthermore, the caisson structure also includes a top plate structure, which is a reinforced concrete structure with a thickness of 50 cm.

[0017] Furthermore, the size of the waterstop steel plate is 60mm×60mm×3mm.

[0018] Furthermore, a 10 mm thick waterproof mortar cake is provided on the outer periphery of the waterstop steel plate and covered with waterproof glue.

[0019] Furthermore, the utility model also provides a caisson construction structure, including the caisson structure provided by the utility model, and a caisson template detachably arranged on the caisson structure.

[0020] Furthermore, the caisson template includes bamboo plywood and vertical back ribs covering the caisson structure, and tension bolts for fixing the bamboo plywood.

[0021] Furthermore, the thickness of the bamboo plywood is 15 mm, and the horizontal and vertical spacings of the tension bolts are both 40 cm×40 cm.

[0022] Furthermore, the vertical back ribs are 40×60 mm square wood with a spacing of 20 cm.

[0023] Furthermore, the structure also includes steel pipes or threaded steel bars arranged on the vertical back ribs to support the caisson formwork.

[0024] Furthermore, the steel pipe is a φ48 double-piece steel pipe.

[0025] The caisson structure provided by the utility model adopts a segmented structure, including at least a plurality of caisson bodies, has a simple structure, is easy to construct, is suitable for ultra-deep caisson construction and is suitable for construction on various complex terrains.

[0026] The caisson construction structure provided by the utility model comprises a caisson template detachably arranged on the caisson structure, so as to better facilitate the construction of the caisson structure provided by the utility model and ensure the safety of the construction and the stability of the caisson structure.

[0027] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A structural schematic diagram of an embodiment of the caisson structure provided by the utility model;

[0029] Figure 2 A structural schematic diagram of another embodiment of the caisson structure provided by the utility model;

[0030] Figure 3 A structural schematic diagram of another embodiment of the caisson structure provided by the utility model;

[0031] Figure 4 A schematic diagram of the installation of the side formwork of the caisson construction structure provided by the utility model;

[0032] Figure 5A schematic diagram of the top formwork installation of the caisson construction structure provided by the utility model.

[0033] Reference numerals:

[0034] Caisson body 1; 101 inner wall; 102 outer wall; blade foot 2; first well body 11; second well body 12; third well body 13; fourth well body 14; fifth well body 15; sixth well body 16, seventh well body 17; eighth well body 18; water-stop steel plate 3; top plate structure 4; caisson formwork 5; bamboo plywood 51; vertical back rib 52; tension bolts 53; steel pipe 54; 6 sand cushion layer; 7 plain concrete cushion layer; d1, d2, d3 caisson body thickness; d4 blade foot thickness; W1 caisson body width; s1 tension bolt spacing. DETAILED DESCRIPTION

[0035] The specific implementation of the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0037] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of the components in the vertical, perpendicular or gravity direction. The transverse direction used refers to the direction consistent with the length of the transverse steel bars, and the longitudinal direction refers to the direction consistent with the length of the longitudinal steel bars.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] like Figure 1 As shown, it is a structural schematic diagram of an embodiment (embodiment 1) of a caisson structure provided by the utility model. As can be seen in the figure, the caisson structure provided by this embodiment includes a caisson body 1 and a blade foot 2 arranged at the bottom of the caisson body 1. The caisson body 1 includes a caisson wall, and the caisson wall includes an inner wall 101 and an outer wall 102. The inner wall 101 and the outer wall 102 are both reinforced concrete structures, and the space between the inner wall 101 and the outer wall 102 is also filled with a reinforced concrete structure.

[0041] The caisson body 1 provided by the utility model is a segmented structure. In this embodiment, the caisson body 1 is a five-segment structure, and the caisson body 1 includes a first well body 11, a second well body 12, a third well body 13, a fourth well body 14 and a fifth well body 15; a water-stopping steel plate 3 with a size of 60mm×60mm×3mm is provided at the junction of the first well body 11 and the second well body 12, the junction of the second well body 12 and the third well body 13, the junction of the third well body 13 and the fourth well body 14, and the junction of the fourth well body 14 and the fifth well body 15. In order to prevent water seepage from the well wall of the caisson body 1, a 10mm thick waterproof mortar cake is provided on the periphery of the water-stopping steel plate 3, and it is covered with waterproof glue.

[0042] The caisson body 1 is a rectangular parallelepiped structure, the blade foot 2 is a structure that is wide at the top and narrow at the bottom, the bottom 2 of the blade foot is a planar structure, and the thickness of the connection between the blade foot 2 and the caisson body 1 is greater than the thickness of the well wall of the caisson body 1. The well wall thickness of the caisson body 1 will be designed differently according to the actual construction situation, and the well wall thickness of the caisson body 1 in different sections will be different. In this embodiment, the caisson body 1 is 21.372 meters high, 9.2 meters long, and 7.7 meters wide. The thickness d2 of the well wall of the first well body 11 is 1.1 meters; the thickness d1 of the well wall of the second well body 12, the third well body 13, and the fourth well body 14 is 0.9 meters. The height of the blade foot 2 is 3.7 meters, and the thickness d4 of the blade foot 2 is 1.7 meters.

[0043] During the actual construction process, the body of the caisson main body 1 is manufactured in sections. The caisson body of the caisson structure is manufactured according to the design requirements, and the first body 11, the second body 12, the third body 13, the fourth body 14 and the fifth body 15 are manufactured in sections; then the caisson structure 1 is sunk in sections; after the first body 11 is manufactured, the first body 11 is sunk first and then the second body 12 is manufactured; after the second body 12 is sunk, the third body 13 is manufactured; after the third body 13 is sunk, the fourth body 14 is manufactured; after the fourth body 14 is sunk, the fifth body 15 is manufactured and sunk.

[0044] The tread load of the blade foot 2 of the caisson structure is greater than the bearing capacity of the underlying foundation soil, so a sand cushion layer 6 of corresponding width and thickness must be laid, and a plain concrete cushion layer 7 must be laid on the sand cushion layer 6 to expand the pressure area. After the foundation pit is excavated, ensure that there is no water accumulation at the bottom of the pit, and lay the sand cushion layer 6. The caisson structure 1 also includes a top plate structure 4, which is a reinforced concrete structure with a thickness of 50 cm.

[0045] like Figure 2As shown, it is a structural schematic diagram of another embodiment (embodiment 2) of the utility model. In this embodiment, the height of the caisson body 1 is 22.751 meters. As can be seen from the figure, the structure of this embodiment is basically the same as that of the previous embodiment, except that the number of segments of the caisson body 1 in this embodiment is different. In this embodiment, the caisson body 1 includes a first well body 11, a second well body 12, a third well body 13, a fourth well body 14, a fifth well body 15 and a sixth well body 16; a water-stopping steel plate 3 with a size of 60mm×60mm×3mm is provided at the junction of the first well body 11 and the second well body 12, the junction of the second well body 12 and the third well body 13, the junction of the third well body 13 and the fourth well body 14, the junction of the fourth well body 14 and the fifth well body 15, and the junction of the fifth well body 15 and the sixth well body 16. In order to prevent water seepage from the well wall of the caisson body 1, a 10mm thick waterproof mortar cake is provided on the periphery of the water-stopping steel plate 3, and it is covered with waterproof glue.

[0046] The caisson body 1 is still a rectangular parallelepiped structure, with a height of 22.751 meters, a length of 9.8 meters, and a width w1 of 8.3 meters. The blade foot 2 is a wide-upper-narrow-lower structure, and the bottom 2 of the blade foot is a flat structure. The height of the blade foot 2 is 3.7 meters, and the thickness of the blade foot 2 is 1.8 meters. The thickness of the connection between the blade foot 2 and the caisson body 1 is greater than the thickness of the well wall of the caisson body 1. The well wall thickness of the caisson body 1 will also be designed differently according to the actual construction situation, and the well wall thickness of different sections of the caisson body 1 will be different. The thickness d2 of the well wall of the first well body 11 and the second well body 12 is 1.2 meters; the thickness d1 of the well wall of the third well body 13, the fourth well body 14, and the fifth well body 15 is 0.9 meters.

[0047] As in the previous embodiment, during the actual construction process, the body of the caisson body 1 is also manufactured in sections. The caisson body of the caisson structure is manufactured according to the design requirements, and the first body 11, the second body 12, the third body 13, the fourth body 14, the fifth body 15 and the sixth body 16 are manufactured in sections; then the caisson structure 1 is sunk in sections; after the first body 11 is manufactured, the first body 11 is sunk first and then the second body 12 is manufactured; after the second body 12 is sunk, the third body 13 is manufactured; after the third body 13 is sunk, the fourth body 14 is manufactured; after the fourth body 14 is sunk, the fifth body 15 is manufactured and sunk; after the fifth body 15 is sunk, the sixth body 16 is manufactured and sunk.

[0048] The structures of the sand cushion layer and the plain concrete cushion layer laid on the sand cushion layer in this embodiment are the same as those in the previous embodiment, and will not be described in detail here.

[0049] like Figure 3, which is a schematic diagram of the structure of another embodiment (Embodiment 3) provided by the utility model. In this embodiment, the height of the caisson body 1 is 36.2281 meters. As can be seen from the figure, the structure of this embodiment is basically the same as that of the previous embodiment, except that the number of sections of the caisson body 1 in this embodiment is different. The caisson body 1 in this embodiment includes eight sections, which can be suitable for deeper caisson operation construction. In this embodiment, the caisson body 1 includes a first well body 11, a second well body 12, a third well body 13, a fourth well body 14, a fifth well body 15, a sixth well body 16, a seventh well body 17 and an eighth well body 18; a water-stop steel plate 3 with a size of 60 mm × 60 mm × 3 mm is provided at the junction of the first well body 11 and the second well body 12, the junction of the second well body 12 and the third well body 13, the junction of the third well body 13 and the fourth well body 14, the junction of the fourth well body 14 and the fifth well body 15, the junction of the fifth well body 15 and the sixth well body 16, the junction of the sixth well body 16 and the seventh well body 17, and the junction of the seventh well body 17 and the eighth well body 18. In order to prevent water seepage from the well wall of the caisson body 1, a 10 mm thick waterproof mortar cake is provided on the periphery of the water-stop steel plate 3 and covered with waterproof glue.

[0050] The caisson body 1 is still a rectangular parallelepiped structure, with a height of 36.2281 meters, a length of 9.8 meters, and a width w1 of 9.3 meters. The blade foot 2 is a wide-upper-narrow-lower structure, and the bottom 2 of the blade foot is a flat structure. The height of the blade foot 2 is 5.1 meters, and the thickness of the blade foot 2 is 2.0 meters. The thickness of the connection between the blade foot 2 and the caisson body 1 is greater than the thickness of the wall of the caisson body 1. The wall thickness of the caisson body 1 will also be designed differently according to the actual construction situation, and the wall thickness of the caisson body 1 in different sections will be different. The thickness d3 of the wall of the first well body 11 and the second well body 12 is 1.4 meters; the thickness d1 of the wall of the third well body 13, the fourth well body 14, and the fifth well body 15 is 1.1 meters; the thickness of the sixth well body 16 and the seventh well body 17 is 0.9 meters.

[0051] As in the previous embodiment, in the actual construction process, the body of the caisson body 1 is also manufactured in sections. The caisson body of the caisson structure is manufactured according to the design requirements, and the first body 11, the second body 12, the third body 13, the fourth body 14, the fifth body 15, the sixth body 16, the seventh body 17 and the eighth body 18 are manufactured in sections; then the caisson structure 1 is sunk in sections; after the first body 11 is manufactured, the first body 11 is sunk first and then the second body 12 is manufactured; after the second body 12 is sunk, the third body 13 is manufactured; after the third body 13 is sunk, the fourth body 14 is manufactured; after the fourth body 14 is sunk, the fifth body 15 is manufactured and sunk; after the fifth body 15 is sunk, the sixth body 16 is manufactured and sunk; after the sixth body 16 is sunk, the seventh body 17 is manufactured and sunk; after the seventh body 17 is sunk, the eighth body 18 is manufactured and sunk.

[0052] In this embodiment, the structures of the top plate structure 4, the sand cushion layer and the plain concrete cushion layer laid on the sand cushion layer are the same as those in the previous embodiment, and will not be described in detail here.

[0053] The utility model also provides a caisson construction structure, comprising the caisson structure provided by the utility model, and a caisson template detachably arranged on the caisson structure. Figure 4 A schematic diagram of the installation of the side formwork of the caisson construction structure provided by the utility model. Figure 5 A schematic diagram of the top formwork installation of the caisson construction structure provided by the utility model. As can be seen in the figure, the caisson formwork includes a bamboo plywood 51 and a vertical back rib 52 covering the caisson structure, as well as a tension bolt 53 for fixing the bamboo plywood. The inner and outer formworks of the well wall and partition wall of the caisson structure are made of 15mm bamboo plywood 51, and the vertical back rib 52 is made of 40×60mm square wood, with a spacing s1 of 20cm; it is supported by tension screws 53 and φ48 double-piece steel pipes 54. When setting up the caisson formwork, the inner formwork is erected first, and then the outer formwork is erected. A 60×60×3mm water stop plate is set in the middle of the tension screw 53. After the caisson formwork is installed, a steel pipe 54 or threaded steel is used to support the inner formwork.

[0054] In order to prevent water seepage in the well wall of the caisson structure, the bolt holes of the tension screws are waterproofed after the formwork is removed; small wooden blocks are chiseled out at the inner and outer ends of the bolt holes of the tension screws, and the recessed parts are smoothed with 1:2 cement mortar, and a 10mm thick waterproof mortar cake is made on the outer layer, and then 2 layers of waterproof glue are applied to cover it.

[0055] During the construction process, the wall of the caisson structure is poured in layers, and the height of each layer pouring is not more than 30cm. After the pouring is completed, the caisson formwork is removed from top to bottom, and the formwork and fastener-type steel pipe are removed from the inside to the outside. Before the segmented caisson body 1 sinks, all the reserved holes in the wall are blocked. For larger holes, cement mortar bricks can be used to block them, and the side close to the soil is plastered with cement mortar. Before sinking, four vertical lines are symmetrically popped out on the inner wall 101 and the outer wall 102 of the caisson body 1 to measure the inclination of the caisson when sinking. At the top of the four vertical lines of the inner wall 101 of the caisson, a plumb ball is hung, and a mark plate is set at the blade foot 2. During the caisson sinking construction, the deflection of the caisson structure is observed at any time to correct it in time. On the outer wall 102 of the caisson body, a horizontal measuring ruler is drawn along the four vertical lines to measure the sinking amount and sinking deviation of the caisson structure.

[0056] When the caisson structure sinks, first break the cushion concrete, then use a long-arm excavator to dig the soil. When digging, dig around first and then dig in the middle, dig in layers, and the thickness of each layer is 40cm. The soil surface in the middle should always be higher than the soil surface around, in the shape of an inverted pot, so that it cuts the soil and sinks, and each sinking is controlled at about 20cm. In the initial sinking stage, the position, elevation (settlement value) and verticality of the caisson should be measured in time, at least twice every 8 hours, once every 3m of sinking, and records should be made. Continuous observation should be made when necessary and timely corrections should be made. In the final sinking stage, measurements should be made at least once an hour. If the caisson still cannot stop after stopping digging, measures should be taken immediately to control the sinking of the caisson structure. When the caisson structure sinks close to the design elevation, observations should be strengthened. When the cumulative settlement of the caisson structure within 8 hours is observed to be no more than 10mm, the bottom can be prepared.

[0057] In the utility model, the concrete strength grade of the caisson structure is C35, the anti-seepage grade is P8, and the concrete is poured by commercial concrete pumping. The height of each layer pouring is not more than 30cm, and the secondary concrete mixture must be vibrated before the previous layer of concrete reaches initial setting. The inserted vibrator is arranged to vibrate according to the effective diameter of the 30cm plane, and should be inserted into the previous layer of concrete 5cm. The concrete is not allowed to slide directly down the inclined surface or flow to its final pouring position. The vibrator should avoid colliding with the steel template or embedded parts. When pouring concrete from a high place, its unloading height should not exceed 2m.

[0058] Before pouring concrete, settlement observation points are set on the four corner formworks of the well to promptly detect uneven settlement of the caisson structure caused by its own weight during the pouring process; guide the location and sequence of concrete pouring during the pouring process, and promptly correct deviations caused by the caisson during the pouring process.

[0059] When pouring concrete, the concrete at the construction joints of the caisson structure's wall should be fully tamped to facilitate dense adhesion of the concrete; the construction joints should be set in a V shape, and the surface of the construction joints should be roughened before the caisson is raised, the exposed stones at the floating slurry position should be removed, and the joints should be cleaned and fully moistened, and then cement mortar should be used to connect the slurry before pouring the upper concrete.

[0060] The caisson structures of the embodiments provided by the utility model all need to be raised. After the caisson body 1 of the caisson structure sinks for the first time, the caisson continues to be raised after the concrete reaches the design strength. At this time, since the top several meters of the caisson structure are above the ground, the outer side of the well wall does not contact the stratum soil and there is no friction. It belongs to the situation where the dead weight increases but the friction does not increase accordingly. Therefore, this working condition needs to consider preventing and avoiding the caisson structure from sinking or tilting by itself. Under normal circumstances, during the sinking of the caisson, the sinking coefficient K1>1. When the well wall of the caisson structure is raised, the sinking stability coefficient K2 must be less than 1. At this time, the sinking stability coefficient of the caisson is calculated. If the sinking stability coefficient of the caisson satisfies K2<1, it is considered that the foundation is stable and the caisson structure will not sink or tilt by itself. If the sinking stability coefficient of the caisson does not meet the condition of K2>1, temporary measures such as filling in the well are required to ensure the stability of the foundation when the caisson structure is raised.

[0061] As shown in Table 1 below, the caisson structure provided by the utility model can be applied to ultra-deep caisson construction operations and various complex terrains. Combined with the embodiment parameter table, it can be seen that in the embodiment provided by the utility model, the caisson structure can pass through soil layers of various structures, has a simple structure, is easy to construct, and can be suitable for ultra-deep caisson construction and various complex terrain construction.

[0062] Example Example 3 Example 2 Example 1 Construction method Undrained sinking, underwater bottom sealing Undrained sinking, underwater bottom sealing Undrained sinking, underwater bottom sealing Plane size (length x width m) 9.8×8.3 9.8×8.3 9.2×7.7 Height (m) 36.281 22.751 21.372 Top plate elevation (m) 0.52 -0.44 0.16 Base plate top elevation (m) -28.561 -17.391 -15.572 Blade foot elevation (m) -33.261 -20.691 -18.872 Top plate thickness (mm) 500 500 500 Well wall thickness (mm) 900 / 1100 / 1400 900 / 1200 900 / 1100 Blade foot thickness (mm) 2000 1800 1700 Blade foot height (mm) 5.1 3.7 3.7 Through the soil Plain fill Plain fill / Through the soil Silty clay Clay Clay Through the soil Clay Silty clay Silty clay Through the soil silt silt 3-1 Powder sand Through the soil Silty clay Silty clay / Through the soil Silty clay Silty clay / Through the soil Silty clay Silty clay Silty clay Through the soil Silty clay Silty clay Silty clay Through the soil Clay / / Through the soil Clay / / Through the soil Silty clay / /

[0063] Table 1 Parameters of the embodiments

[0064] The caisson construction structure provided by the utility model comprises a caisson template detachably arranged on the caisson structure, so as to better facilitate the construction of the caisson structure provided by the utility model and ensure the safety of the construction and the stability of the caisson structure.

[0065] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0067] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A caisson structure, characterized in that: The caisson comprises a caisson body (1) and a blade foot (2) arranged at the bottom of the caisson body (1); the caisson body (1) comprises a first well body (11), a second well body (12), a third well body (13), a fourth well body (14) and a fifth well body (15); a water stop steel plate (3) is arranged at the connection between the first well body (11) and the second well body (12), the connection between the second well body (12) and the third well body (13), the connection between the third well body (13) and the fourth well body (14), and the connection between the fourth well body (14) and the fifth well body (15).

2. The caisson structure according to claim 1, characterized in that: The caisson body (1) comprises a caisson wall (100), wherein the caisson wall (100) comprises an inner wall (101) and an outer wall (102), wherein both the inner wall (101) and the outer wall (102) are reinforced concrete structures, and a reinforced concrete structure is also filled between the inner wall (101) and the outer wall (102).

3. The caisson structure according to claim 2, characterized in that: The caisson body (1) is a hollow cylindrical structure, the blade foot (2) is a structure that is wide at the top and narrow at the bottom, the bottom of the blade foot (2) is a flat structure, and the thickness of the connection between the blade foot (2) and the caisson body (1) is greater than the thickness of the caisson wall (100).

4. The caisson structure according to claim 3, characterized in that: The caisson body (1) is a rectangular parallelepiped structure.

5. The caisson structure according to claim 4, characterized in that: The caisson body (1) has a height of 21.372 meters, a length of 9.2 meters, a width of 7.7 meters, and a thickness of 1.1 meters; the height of the blade foot (2) is 3.7 meters, and the thickness of the blade foot (2) is 1.7 meters.

6. The caisson structure according to claim 4, characterized in that: The caisson body (1) comprises a sixth shaft (16), the height of the caisson body (1) being 22.751 meters, the length being 9.8 meters, the width being 8.3 meters, and the thickness being 1.2 meters; the height of the blade foot (2) being 3.7 meters, and the thickness of the blade foot (2) being 1.8 meters.

7. The caisson structure according to claim 4, characterized in that: The caisson body (1) comprises a sixth well body (16), a seventh well body (17) and an eighth well body (18); the caisson body (1) has a height of 36.2281 meters, a length of 9.8 meters, a width of 9.3 meters and a thickness of 1.4 meters; the height of the blade foot (2) is 5.1 meters, and the thickness of the blade foot (2) is 2.0 meters.

8. The caisson structure according to claim 4, characterized in that: It also includes a top plate structure (4), which is a reinforced concrete structure with a thickness of 50 centimeters.

9. The caisson structure according to claim 1, characterized in that: The size of the water-stop steel plate (3) is 60 mm×60 mm×3 mm.

10. The caisson structure according to claim 9, characterized in that: The outer periphery of the water-stop steel plate (3) is provided with a 10 mm thick waterproof mortar cake and covered with waterproof glue.

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