Suspension bridge anchorage split type seabed caisson construction device

Abstract

The utility model relates to bridge construction technical field, concretely, it is a kind of suspension bridge anchorage split type seabed caisson construction device, it includes sinking well and tie beam steel shell, the sinking well includes front sinking well and rear sinking well, the upper portion of front sinking well and rear sinking well is equipped with sinking well wall, at least one tie beam steel shell is connected between sinking well wall;The sinking well wall includes sinking well connecting part, the sinking well connecting part is U type structure, the vertical position of both sides and the horizontal position of bottom are all step type structure, and outer step is long, and inner step is short;The tie beam steel shell includes web, the both ends of web are equipped with steel shell connecting part, the steel shell connecting part is U type structure, the vertical position of both sides and the horizontal position of bottom are all step type structure, and outer step is short, and inner step is long.The utility model can guarantee the connecting strength of sinking well and tie beam not to be influenced when sinking well and tie beam steel shell occur deviation when sinking well occurs torsion, inclination.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to a split-type subsea caisson construction device for suspension bridge anchorages. Background Technology

[0002] With the rapid development of civil engineering construction both domestically and internationally, caissons, as an important structural component, have gradually expanded from land-based to water-based applications, and their dimensions have become increasingly larger. Offshore caissons are commonly found in offshore bridge construction projects, with circular and rectangular cross-sections being the most common. A new type of caisson structure has emerged, employing a split-type caisson foundation. In this split-type foundation, the front and rear caissons are of the same size, connected by tie beams.

[0003] In the existing technology, a Chinese patent entitled "A Construction Method and Device for a Split-Type Subsea Caisson Foundation for a Suspension Bridge Anchorage" describes a construction step where the caisson may twist or tilt during the joint construction of the caisson and tie beam casting device. This can cause deviations between the caisson and the tie beam steel shell, making the joint construction difficult and severely affecting the connection strength between the caisson and the tie beam. Therefore, there is an urgent need for a construction device that can ensure the smooth construction of the joint between the caisson and the tie beam without affecting the connection strength when the caisson twists or tilts, causing deviations between the caisson and the tie beam steel shell. Utility Model Content

[0004] The purpose of this utility model is to provide a split-type seabed caisson construction device for suspension bridge anchorages, so as to solve the problem that when the caisson is twisted or tilted, causing deviation between the caisson and the steel shell of the tie beam, the connection strength between the caisson and the tie beam is affected.

[0005] The technical solution of this utility model is: a split-type subsea caisson construction device for suspension bridge anchorages, comprising: The caisson and the tie beam steel shell, wherein the caisson includes a front caisson and a rear caisson, the upper part of the front caisson and the rear caisson are provided with caisson walls, and at least one tie beam steel shell is connected between the caisson walls; The caisson wall includes a caisson connecting part, which is a U-shaped structure. The vertical parts on both sides and the horizontal parts at the bottom are stepped, with the outer steps being longer and the inner steps being shorter. The steel shell of the tie beam includes a web, and the two ends of the web are provided with steel shell connecting parts. The steel shell connecting parts are U-shaped structures, and the vertical parts on both sides and the horizontal parts at the bottom are stepped structures, with the outer steps being short and the inner steps being long.

[0006] According to the present invention, a split-type subsea caisson construction device for suspension bridge anchorage is provided, wherein the steel shell of the tie beam further includes a temporary partition, the temporary partition is arranged perpendicular to the web plate, and a reserved space is provided between the temporary partition and the caisson wall, the reserved space being used to install a limiting device.

[0007] According to the present invention, a split-type subsea caisson construction device for suspension bridge anchorage is provided, wherein a 20cm gap is left between the vertical part of the caisson connection and the vertical part of the steel shell connection.

[0008] According to the present invention, a split-type subsea caisson construction device for suspension bridge anchorage is provided, wherein an Ω-shaped waterstop is connected between the vertical part of the caisson connection and the vertical part of the steel shell connection.

[0009] According to the present invention, a split-type subsea caisson construction device for suspension bridge anchorage is provided, wherein the gap between the vertical part of the caisson connection and the vertical part of the steel shell connection is filled with quick-setting mortar.

[0010] According to the present invention, a split-type subsea caisson construction device for suspension bridge anchorage is provided, wherein a 20cm gap is left between the transverse part of the caisson connection and the transverse part of the steel shell connection.

[0011] According to the present invention, a split-type subsea caisson construction device for suspension bridge anchorage is provided, wherein a GINA waterstop is provided between the transverse part of the caisson connection and the transverse part of the steel shell connection.

[0012] The advantages of this utility model are: 1. The caisson connection part and the steel shell connection part of this utility model are stepped, and the two can mesh with each other when connected, which can avoid deviation between the caisson and the tie beam steel shell due to the torsion or tilting of the caisson; 2. The temporary partition of the tie beam steel shell of this utility model is provided with a reserved space between it and the caisson wall for installing a limiting device to restrict the movement of the tie beam steel shell during the sinking construction, so as to ensure that the relative position of the tie beam steel shell and the caisson does not deviate too much when the tie beam steel shell sinks into place. 3. The vertical part of the caisson connection part and the vertical part of the steel shell connection part of this utility model are left with a gap of 20cm, which can provide sufficient fault tolerance space when the caisson is twisted or tilted, and avoid collision between the caisson connection part and the steel shell connection part, which would cause damage to the connection structure. 4. This utility model uses an Ω-shaped waterstop to connect the vertical part of the caisson connection and the vertical part of the steel shell connection, preventing seawater from entering the steel shell of the tie beam through the vertical gap between the two and affecting the construction of the tie beam. 5. This utility model injects quick-setting mortar into the gap between the vertical part of the caisson connection and the steel shell connection, which can further enhance the water-stopping effect and at the same time strengthen the connection strength between the caisson connection and the steel shell connection. 6. The transverse part of the caisson connection part and the transverse part of the steel shell connection part of this utility model are left with a gap of 20cm, which can provide sufficient fault tolerance space when the caisson shifts or settles, and avoid collision between the caisson connection part and the steel shell connection part, which would cause damage to the connection structure. 7. This utility model provides a GINA waterstop between the transverse part of the caisson connection and the transverse part of the steel shell connection. The waterstop is achieved by combining the weight of the steel shell of the tie beam with the GINA waterstop, thus preventing seawater from entering the interior of the steel shell of the tie beam through the gap at the bottom of the two parts and affecting the construction of the tie beam. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the split-type subsea caisson construction device of this utility model; Figure 2 This is a schematic diagram of the caisson of this utility model; Figure 3 This is a schematic diagram of the tie beam steel shell of this utility model; Figure 4 This is a flowchart illustrating the overall construction process of this utility model. Figure 5 This is a schematic diagram of the vertical connection between the caisson connecting part and the steel shell connecting part of this utility model; Figure 6 This is a schematic diagram of the lateral connection between the caisson connecting part and the steel shell connecting part of this utility model; Figure 7 This is a schematic diagram of another method for connecting the caisson connection part and the steel shell connection part of this utility model; Figure 8 This is a schematic diagram of another method of connecting the caisson connection part and the steel shell connection part of this utility model; Figure 9 This is a schematic diagram of another method three for connecting the caisson connection part and the steel shell connection part of this utility model; Figure 10 This is a schematic diagram of another method of connecting the caisson connection part and the steel shell connection part of this utility model; Wherein: 100-front caisson; 200-rear caisson; 1-caisson wall; 11-caisson connection; 2-tethering beam steel shell; 21-web plate; 211-steel shell connection; 22-temporary partition; 3-Ω-type waterstop; 4-quick-setting mortar; 5-GINA waterstop; 6-CO-type locking buckle; 7-waterstop; 8-jack; 9-steel shell joint; 10-underwater non-segregating concrete. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0018] This utility model provides a split-type seabed caisson construction device for suspension bridge anchorages. Compared with the prior art, this utility model can solve the problem of deviation between the caisson and the tie beam steel shell caused by the torsion and tilting of the caisson, and at the same time strengthen the connection strength between the caisson and the tie beam steel shell.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] A type of split-type subsea caisson construction device for suspension bridge anchorages, specifically, such as... Figure 1 , 2 As shown in Figure 3, it includes: The caisson and the tie beam steel shell 2, the caisson includes a front caisson 100 and a rear caisson 200, the upper part of the front caisson 100 and the rear caisson 200 are provided with caisson walls 1, and at least one tie beam steel shell 2 is connected between the caisson walls 1; The caisson wall 1 includes a caisson connecting part 11, which is a U-shaped structure. The vertical parts on both sides and the horizontal parts at the bottom are stepped, with the outer steps being longer and the inner steps being shorter. The tie beam steel shell 2 includes a web 21, and steel shell connecting parts 211 are provided at both ends of the web 21. The steel shell connecting parts 211 are U-shaped structures, and the vertical parts on both sides and the horizontal parts at the bottom are stepped structures, with the outer steps being short and the inner steps being long.

[0021] During specific construction, such as Figure 4 As shown: Caisson positioning and lowering: Lower the front caisson 100 and the rear caisson 200 into place and pour and seal the bottom, fill the core and caisson wall with concrete; float the tie beam steel shell 2 to the vicinity of the installation position; Installation of the tie beam steel shell: Use a floating crane to lift the tie beam steel shell 2 until the bottom of the tie beam steel shell 2 exceeds the top of the caisson; move the tie beam steel shell 2 horizontally to the installation position; use a floating crane to slowly lower the tie beam steel shell 2 until the tie beam steel shell 2 floats on its own, at which point the draft of the tie beam steel shell is about 3.75m; Floating pouring of steel shell bottom plate concrete: The first layer of tie beam reinforcement is tied inside the tie beam steel shell 2, and the first layer of tie beam concrete is poured to a height of 2m; the tie beam steel shell 2 is slowly lowered by a floating crane until the tie beam steel shell 2 floats on its own, at which point the draft of the tie beam steel shell 2 is 7.85m; Layered pouring of tie beam concrete: The second layer of tie beam reinforcement is tied inside the tie beam steel shell 2, and the second layer of tie beam concrete is poured to a height of 2m. The tie beam steel shell 2 is then slowly lowered using a floating crane until it floats to the surface, at which point its draft is 11.95m. The third layer of tie beam reinforcement is tied inside the tie beam steel shell 2, and the third layer of tie beam concrete is poured to a height of 2m. The tie beam steel shell 2 is then slowly lowered using a floating crane until it floats to the surface, at which point its draft is 16.05m. The fourth layer of tie beam reinforcement is tied inside the tie beam steel shell 2, and the fourth layer of tie beam concrete is poured to a height of 2m. The tie beam steel shell 2 is then slowly lowered using a floating crane until it rests on the corbel of the caisson wall 1. The lifting equipment for the tie beam steel shell 2 is removed, and the floating crane is moved away. The fifth layer of tie beam reinforcement is tied, and concrete is poured to a height of 2m. Construction of connection between tie beam steel shell and caisson wall: Construction of connection between steel shell connection part 211 of tie beam steel shell 2 and caisson connection part 11 of caisson wall 1; Water pumping out the space reserved between the steel shell and the caisson wall: the water between the temporary partition 22 of the tie beam steel shell 2 and the caisson wall 1 is pumped out to create a dry construction environment; Remove the temporary partition between the caisson wall and the steel shell: Remove the temporary partition 22 of the steel shell 2 of the tie beam; Construction of the connection between the caisson and the tie beam: pour concrete at both ends of the tie beam in layers to connect the caisson and the tie beam.

[0022] In some embodiments, the aforementioned tie beam steel shell 2 has been optimized, such as... Figure 1 , 3 As shown, the tie beam steel shell 2 also includes a temporary partition 22, which is set perpendicular to the web 21 and has a reserved space between it and the caisson wall 1. The reserved space is used to install a limiting device.

[0023] Specifically, when the floating crane lowers the tie beam steel shell 2, a limiting device is installed in the reserved space between the temporary partition 22 and the caisson wall 1. This device can restrict the movement of the tie beam steel shell 2 in directions other than the vertical direction, ensuring that the tie beam steel shell 2 is stably connected to the caisson wall 1 after it is lowered into place.

[0024] In some embodiments, such as Figure 4 As shown, there is a 20cm gap between the vertical part of the caisson connection 11 and the vertical part of the steel shell connection 211.

[0025] During the construction of connecting the steel shell 2 of the tie beam to the caisson wall 1, the caisson may twist or tilt. In order to provide sufficient fault tolerance space and avoid collision between the caisson connection part 11 and the steel shell connection part 211, which would cause damage to the connection structure, a gap of 20cm is left between the vertical part of the caisson connection part 11 and the vertical part of the steel shell connection part 211, which can effectively solve this problem.

[0026] Specifically, in this embodiment, the vertical step length of both the caisson connecting part 11 and the steel shell connecting part 211 is 80cm, the step height is 60cm, the inner step of the vertical part of the caisson connecting part 11 is 20cm away from the inner step of the vertical part of the steel shell connecting part 211, and the outer step of the vertical part of the caisson connecting part 11 is 20cm away from the outer step of the vertical part of the steel shell connecting part 211.

[0027] Preferably, such as Figure 4 As shown, an Ω-shaped waterstop 3 is connected between the vertical part of the caisson connection 11 and the vertical part of the steel shell connection 211.

[0028] When connecting the caisson and the tie beam, it is necessary to ensure that the reserved space between the caisson wall 1 and the temporary partition 22 of the tie beam steel shell 2 is a dry environment. In order to enhance the water-stopping effect between the caisson wall 1 and the tie beam steel shell 2, in this embodiment, an Ω-shaped waterstop 3 is connected at the 20cm gap between the vertical part of the caisson connection 11 and the vertical part of the steel shell connection 211.

[0029] Specifically, the two ends of the inner Ω-shaped waterstop 3 are bolted to the inner step of the vertical part of the caisson connection 11 and the inner step of the vertical part of the steel shell connection 211, respectively; the two ends of the outer Ω-shaped waterstop 3 are bolted to the outer step of the vertical part of the caisson connection 11 and the outer step of the vertical part of the steel shell connection 211, respectively.

[0030] Furthermore, such as Figure 4 As shown, in order to strengthen the connection between the caisson wall 1 and the tie beam steel shell 2, this embodiment injects quick-setting mortar 4 into the gap between the vertical part of the caisson connection 11 and the vertical part of the steel shell connection 211. At the same time, the quick-setting mortar 4 can also enhance the water-stopping effect at the connection between the caisson wall 1 and the tie beam steel shell 2.

[0031] In some embodiments, to prevent the quick-setting mortar 4 from flowing out of the gap between the vertical part of the caisson connection 11 and the vertical part of the steel shell connection 211, sandbags are used to plug the gap between the two before grouting, and the sandbags are removed after the quick-setting mortar 4 has solidified.

[0032] In some embodiments, such as Figure 5 As shown, there is a 20cm gap between the transverse portion of the caisson connection 11 and the transverse portion of the steel shell connection 211.

[0033] During the construction of connecting the steel shell 2 of the tie beam to the caisson wall 1, the caisson may shift or settle. In order to provide sufficient fault tolerance space and avoid collision between the caisson connection part 11 and the steel shell connection part 211, which would cause damage to the connection structure, a gap of 20cm is left between the transverse part of the caisson connection part 11 and the transverse part of the steel shell connection part 211, which can effectively solve this problem.

[0034] Specifically, in this embodiment, the step length of the lateral part of the caisson connecting part 11 and the steel shell connecting part 211 is 80cm and the step height is 60cm. The inner step of the lateral part of the caisson connecting part 11 is 20cm away from the inner step of the lateral part of the steel shell connecting part 211, and the outer step of the lateral part of the caisson connecting part 11 is 20cm away from the outer step of the lateral part of the steel shell connecting part 211.

[0035] Preferably, such as Figure 5 As shown, a GINA waterstop 5 is provided between the transverse portion of the caisson connection 11 and the transverse portion of the steel shell connection 211.

[0036] When connecting the caisson and the tie beam, it is necessary to ensure that the reserved space between the temporary partition 22 of the caisson wall 1 and the tie beam steel shell 2 is a dry environment. In order to enhance the water-stopping effect between the caisson wall 1 and the tie beam steel shell 2, in this embodiment, a GINA waterstop 5 is installed in the gap between the transverse part of the caisson connection 11 and the transverse part of the steel shell connection 211, 30cm away from the edge of the inner step of the steel shell connection 211.

[0037] Specifically, the GINA waterstop 5 is located between the outer steps of the transverse part of the caisson connection 11 and the inner steps of the vertical part of the steel shell connection 211. The self-weight of the tie beam steel shell 2 and the GINA waterstop 5 work together to achieve a good water-stopping effect.

[0038] Optionally, in some other embodiments, the caisson connection 11 and the steel shell connection 211 are constructed as follows: Example 1: As Figure 7 As shown, three CO-type locking buckles 6 are used for guidance and water stop; after the steel shell 2 of the tie beam is lowered into place, quick-setting mortar 4 is poured into the CO-type locking buckle 6; underwater non-segregating concrete 10 is poured into the double-walled compartment at the CO-type locking buckle 6.

[0039] Example 2: Figure 8 As shown, double CO-type locking buckles 6 are used for guidance and water stop, with steel plates installed on the outside. After being lowered into place, waterstops 7 are installed to stop the water. Quick-setting mortar 4 is injected into the CO-type locking buckles 6. Underwater non-segregating concrete 10 is injected into the double-walled compartment at the locking buckle.

[0040] Example 3: Figure 9 As shown, double CO-type locking buckles 6 are used for guidance and water stop, with steel plates installed on the inner side. After being lowered into place, waterstops 7 are installed to stop the water, and jacks 8 are used for counter-pressure. Quick-setting mortar 4 is injected into the CO-type locking buckles 6.

[0041] Example 4: Figure 10 As shown, a steel shell joint 9 is reserved at the connection between the caisson wall 1 and the steel shell 2 of the tie beam, and concrete is poured into the steel shell joint 9 to form concrete tooth blocks; after the steel shell 2 of the tie beam is lowered into place, steel plates are used to seal the two sides of the steel shell joint 9, and quick-setting mortar 4 or underwater non-segregating concrete 10 is poured between the concrete tooth blocks.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A construction device for a split-type subsea caisson for suspension bridge anchorages, characterized in that, include: Caisson and tie beam steel shell (2); The caisson includes a front caisson (100) and a rear caisson (200). The upper part of the front caisson (100) and the rear caisson (200) is provided with a caisson wall (1). At least one tie beam steel shell (2) is connected between the caisson walls (1). The caisson wall (1) includes a caisson connecting part (11), which is a U-shaped structure. The vertical parts on both sides and the horizontal parts at the bottom are stepped structures, with the outer steps being long and the inner steps being short. The steel shell of the tie beam (2) includes a web (21), and the two ends of the web (21) are provided with steel shell connecting parts (211). The steel shell connecting parts (211) are U-shaped structures, and the vertical parts on both sides and the horizontal parts at the bottom are stepped structures, with the outer steps being short and the inner steps being long.

2. The suspension bridge anchorage split-type subsea caisson construction device as described in claim 1, characterized in that, The steel shell of the tie beam (2) also includes a temporary partition (22), which is set perpendicular to the web (21) and has a reserved space between it and the caisson wall (1). The reserved space is used to install a limiting device.

3. The suspension bridge anchorage split-type subsea caisson construction device as described in claim 1, characterized in that, A 20cm gap is left between the vertical part of the caisson connection part (11) and the vertical part of the steel shell connection part (211).

4. The suspension bridge anchorage split-type subsea caisson construction device as described in claim 3, characterized in that, An Ω-shaped waterstop (3) is connected between the vertical part of the caisson connection (11) and the vertical part of the steel shell connection (211).

5. The suspension bridge anchorage split-type subsea caisson construction device as described in claim 3, characterized in that, The gap between the vertical part of the caisson connection (11) and the vertical part of the steel shell connection (211) is filled with quick-setting mortar (4).

6. The suspension bridge anchorage split-type subsea caisson construction device as described in claim 1, characterized in that, A 20cm gap is left between the transverse portion of the caisson connection part (11) and the transverse portion of the steel shell connection part (211).

7. The suspension bridge anchorage split-type subsea caisson construction device as described in claim 6, characterized in that, A GINA waterstop (5) is provided between the transverse portion of the caisson connection (11) and the transverse portion of the steel shell connection (211).

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