Demountable and recyclable steel casing framework based on deepwater bridge pile foundation construction

Abstract

The utility model discloses a detachable and recoverable steel casing framework based on deepwater bridge pile foundation construction, which comprises a foundation bottom die structure, a steel casing structure and a steel casing structure, the pile casing formwork structure comprises a cylinder formwork body which is arranged to be a cylindrical tubular steel formwork. The cylindrical tubular barrel mold main body is formed by connecting at least two groups of split type barrel molds in a closed and continuous manner at the corresponding circumferential positions, and one end part of the cylindrical tubular barrel mold main body is detachably and fixedly connected with the top end part of the cylindrical tubular foundation bottom mold structure. According to the construction framework, all the construction frameworks located on the upper portion of the transition connection structure in the underwater pile foundation operation process can be recycled, the cost input and resource waste in the pile foundation construction process are effectively reduced, and the engineering economy and the functional practicability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge pile foundation construction, and in particular to a detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction. Background Art

[0002] At present, steel casing plays the following roles in the construction process of pile foundation:

[0003] 1) Drilling guide function to prevent excessive hole deviation during pile foundation drilling;

[0004] 2) Lateral support, which provides lateral support to soil and concrete to prevent hole collapse;

[0005] 3) Provide an enclosed environment for pile foundation drilling, seal the mud, ensure the water level in the hole, and maintain a static working environment in deep water, especially in the flow environment affected by tides.

[0006] Therefore, in the construction process of coastal areas and inland rivers, lakes and other areas with unstable soil and deep water areas, steel casing construction structures are widely used. However, except for the support and anti-corrosion functions in special cases, most of the functions of steel casing only play a role before the pile foundation is formed. When the steel casing is used as a permanent structure after the pile foundation is bored, there are many negative effects, such as: 1) The part of the casing extending into the soil does not fully consider the friction of the pile foundation, and at the same time, due to the deadweight load of the steel casing, the overall pile length of the pile foundation is increased; 2) The bite force of the steel-rock interface is weak, which reduces the vertical and horizontal bearing capacity of the pile foundation.

[0007] At the same time, in order to meet the requirements of modern transportation development, the construction span of bridges in various regions has gradually increased, and their pile foundations have also been deepened. In order to ensure the smooth implementation of pile foundation operations, the specifications and volumes of the corresponding steel casings are also required to increase simultaneously, resulting in an increase in the installation volume and engineering difficulty of the steel casings, an increase in the consumption of steel casing materials, and an increase in the construction equipment and platforms required for the construction of steel casings, which is not conducive to the overall construction economy. For steel casings whose upper parts can be partially recycled, the cost of cutting and recycling is high, and usually due to uneven cutting and dismantling, there are fewer actually usable parts, which means that the cut parts can only be treated as waste, resulting in increased construction costs and serious waste of resources. Utility Model Content

[0008] To this end, the utility model provides a detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction to solve the above-mentioned technical problems existing in the prior art of assisting bridge pile foundation construction with steel casing.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A removable and recyclable steel casing structure based on deep-water bridge pile foundation construction, comprising:

[0011] The base bottom formwork structure is set as a cylindrical tubular steel formwork;

[0012] The casing template structure comprises a casing template body, wherein the casing template body is configured as a cylindrical tubular steel template;

[0013] The cylindrical tubular drum mold body is composed of at least two groups of petal-type drum molds that are closed and connected at corresponding circumferential positions, and the outer edge of one end of the cylindrical tubular drum mold body is detachably fixedly assembled with the outer edge of the top end of the cylindrical tubular basic bottom mold structure.

[0014] On the basis of the above technical solution, the utility model is further described as follows:

[0015] As a further solution of the utility model, it also includes:

[0016] The transition connection structure comprises a connection body, wherein the connection body is arranged as a cylindrical tubular structure, and the cylindrical tubular connection body and the cylindrical tubular barrel mold body are arranged correspondingly to the same central axis;

[0017] The outer edge of one end of the cylindrical tubular connecting body and the outer edge of one end of the drum mold body are detachably fixedly assembled and connected, and the outer edge of the other end of the cylindrical tubular connecting body and the top outer edge of the cylindrical tubular base bottom mold structure are coaxially welded and fixedly connected.

[0018] As a further solution of the utility model, the side positions of at least two groups of the split-petal drum molds are detachably fixedly assembled and connected by shock-proof bolts.

[0019] As a further solution of the utility model, rubber pads are fixedly provided between the relative connection positions of at least two groups of the split-petal drum molds.

[0020] As a further solution of the utility model, at least two groups of the outer side walls of the split-petal drum molds are respectively fixedly provided with a plurality of groups of annular stiffening ribs and a plurality of groups of longitudinal stiffening ribs;

[0021] A plurality of groups of annular stiffening ribs and a plurality of groups of longitudinal stiffening ribs are arranged to intersect each other vertically.

[0022] As a further solution of the utility model, at least two groups of the split-petal-type cylinder molds are fixedly provided with split-petal-type docking flanges at both ends, and at least two groups of the split-petal-type docking flanges located at the same end of the cylinder mold body are continuously connected along corresponding circumferential positions to form cylinder mold docking flanges;

[0023] A transition butt flange is fixedly provided on the outer edge of one end of the cylindrical tubular connecting body, and the outer edge of one end of the cylindrical tubular connecting body is detachably fixedly assembled with the cylinder mold butt flange at one end of the cylinder mold body through the transition butt flange.

[0024] As a further solution of the utility model, the transition connection structure further includes a first supporting rib;

[0025] The first supporting ribs are provided in a plurality of groups, and the plurality of first supporting ribs are evenly spaced and obliquely fixedly arranged between the connecting body and the transition butt flange along the circumference.

[0026] As a further solution of the utility model, it also includes:

[0027] The clamp holding structure includes a holding body;

[0028] The force-holding body is configured as a cylindrical tubular structure, the cylindrical tubular force-holding body and the cylindrical tubular drum mold body are configured correspondingly to the same central axis, and the outer edge of one end of the cylindrical tubular force-holding body and the other end of the drum mold body are detachably fixedly assembled and connected.

[0029] As a further solution of the utility model, a force-holding docking flange is fixedly provided on the outer edge of one end of the cylindrical tubular force-holding body, and the outer edge of one end of the cylindrical tubular force-holding body is detachably fixedly assembled with the cylinder mold docking flange at the other end of the cylinder mold body through the force-holding docking flange.

[0030] As a further solution of the utility model, the clamp holding structure further includes:

[0031] The second supporting ribs are provided in a plurality of groups, and the plurality of groups of the second supporting ribs are evenly spaced and obliquely fixedly arranged between the force-holding body and the force-holding docking flange along the circumference.

[0032] The utility model has the following beneficial effects:

[0033] The construction framework can be effectively positioned and set on the underwater bed through the foundation bottom formwork structure to form a local traditional steel casing segment, and the foundation bottom formwork structure can be used as the framework foundation to effectively detachably position and connect the casing template structure through the transition connection structure. At the same time, it can further detachably position and connect the clamp holding structure based on the casing template structure, and transmit the assembly of the vibrating pile hammer through the clamp holding structure to facilitate the overall driving of the framework into the underwater bed. The above-mentioned settings effectively meet and complete the requirements for underwater pile foundation construction, and can fully recycle the construction framework located on the upper part of the transition connection structure during the underwater pile foundation operation, effectively reducing the cost investment and resource waste in the pile foundation construction process, and improving the engineering economy and functional practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for the implementation methods or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the utility model without affecting the effects and purposes that can be achieved by the utility model.

[0035] Figure 1 The present invention is a schematic diagram of the overall structure of a detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction provided by an embodiment of the present invention.

[0036] Figure 2 A schematic diagram of the top view assembly structure of a casing template structure in a detachable and recyclable steel casing framework based on deep-water bridge pile foundation construction provided by an embodiment of the utility model.

[0037] Figure 3 A schematic diagram of a petal-type top view of a casing template structure in a detachable and recyclable steel casing framework for deep-water bridge pile foundation construction provided in an embodiment of the utility model.

[0038] Figure 4 A partial side structural schematic diagram of a casing template structure in a detachable and recyclable steel casing framework based on deep-water bridge pile foundation construction provided by an embodiment of the utility model.

[0039] Figure 5 A side structural schematic diagram of a transition connection structure in a detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction provided by an embodiment of the utility model.

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] Casing formwork structure 1: a cylinder mold body 11, a split cylinder mold 111, a cylinder mold docking flange 12, annular stiffening ribs 13, and longitudinal stiffening ribs 14;

[0042] Transition connection structure 2: connection body 21, transition connection flange 22, first supporting rib 23;

[0043] Basic bottom mold structure 3;

[0044] Clamp holding structure 4: holding body 41, holding flange 42, second supporting rib 43;

[0045] Underwater bed a. DETAILED DESCRIPTION

[0046] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships shall be deemed to be within the scope of the present invention without substantially changing the technical content.

[0048] like Figures 1 to 5 As shown, the embodiment of the utility model provides a detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction, including a casing template structure 1, a transition connection structure 2, a foundation bottom template structure 3 and a clamp holding structure 4, which is used to effectively position and set on the bottom bed a through the foundation bottom template structure 3 to form a local traditional steel casing segment, and use the foundation bottom template structure 3 as the foundation of the structure to effectively detachably position and dock the casing template structure 1 through the transition connection structure 2, and at the same time, it can further detachably position and dock the clamp holding structure 4 based on the casing template structure 1, and drive and assemble a vibrating pile hammer through the clamp holding structure 4 to facilitate the overall structure to be driven into the bottom bed a, so that the above-mentioned settings effectively meet and complete the requirements of underwater pile foundation construction, and can realize full recycling of the construction structure located on the upper part of the transition connection structure 2 during the underwater pile foundation operation, effectively reducing the cost investment and resource waste during the pile foundation construction process, and significantly improving the overall application engineering economy and functional practicality of the structure. The specific settings are as follows:

[0049] Please refer to Figures 1 to 4 The casing template structure 1 includes a cylinder mold main body 11 and a cylinder mold docking flange 12; wherein the cylinder mold main body 11 is configured as a cylindrical tubular steel template, and the cylindrical tubular cylinder mold main body 11 is connected and arranged in corresponding circumferential positions by at least two groups of petal cylinder molds 111, and the side positions of at least two groups of petal cylinder molds 111 are detachably fixedly assembled and arranged by shock-proof bolts, and the two ends of at least two groups of petal cylinder molds 111 are fixedly provided with petal docking flanges, and at least two groups of petal docking flanges located at the same end of the cylinder mold main body 11 are connected and connected along the corresponding circumferential positions to form the cylinder mold docking flange 12, which is used to utilize the cylinder mold docking flanges 12 at both ends of the cylinder mold main body 11 to detachably dock with the transition connection structure 2 and the clamp holding structure 4.

[0050] As a preferred solution of the present embodiment, at least two groups of the split-flap cylinder molds 111 are respectively fixedly provided with a plurality of groups of annular stiffening ribs 13 and a plurality of groups of longitudinal stiffening ribs 14 on their outer side walls, and the plurality of groups of annular stiffening ribs 13 and the plurality of groups of longitudinal stiffening ribs 14 are vertically intersected with each other, so as to utilize the annular stiffening ribs 13 and the longitudinal stiffening ribs 14 to significantly improve the overall assembly stability of the cylinder mold body 11.

[0051] As another preferred solution of this embodiment, rubber pads are fixedly provided between the relative connection positions of at least two groups of the split-type drum molds 111, so as to use the rubber pads to stop water and prevent leakage of slurry.

[0052] Please refer to Figure 5 The transition connection structure 2 includes a connection body 21, a transition docking flange 22 and a first supporting rib 23; wherein the connection body 21 is configured as a cylindrical tubular structure, and the cylindrical tubular connection body 21 and the cylindrical tubular drum mold body 11 are arranged corresponding to the same center axis, and the outer edge of one end of the cylindrical tubular connection body 21 is fixedly provided with a transition docking flange 22, and the outer edge of one end of the cylindrical tubular connection body 21 is detachably fixedly assembled with the drum mold docking flange 12 at one end of the drum mold body 11 through the transition docking flange 22; the first supporting rib 23 is provided with a plurality of groups, and the plurality of groups of the first supporting ribs 23 are evenly spaced and obliquely fixedly fixedly arranged between the connection body 21 and the transition docking flange 22 along the circumference, so as to effectively improve the positioning and docking stability performance of the connection body 21 through a plurality of groups of the first supporting ribs 23.

[0053] Please continue to refer to Figure 1 The foundation bottom formwork structure 3 is configured as a cylindrical tubular steel formwork, and the top outer edge of the cylindrical tubular foundation bottom formwork structure 3 and the other end outer edge of the cylindrical tubular connecting body 21 are coaxially welded and fixedly connected, so as to effectively position and set it on the bottom bed a through the foundation bottom formwork structure 3 to form a local traditional steel casing segment, and use the foundation bottom formwork structure 3 as the framework foundation to effectively detachably position and connect the casing template structure 1 through the transition connecting structure 2 to form a casting template as a whole.

[0054] Please continue to refer to Figure 1The clamp force-holding structure 4 includes a force-holding body 41, a force-holding docking flange 42 and a second supporting rib 43; wherein, the force-holding body 41 is configured as a cylindrical tubular structure, and the cylindrical tubular force-holding body 41 and the cylindrical tubular drum mold body 11 are arranged corresponding to the same center axis, and the outer edge of one end of the cylindrical tubular force-holding body 41 is fixedly provided with a force-holding docking flange 42, and the outer edge of one end of the cylindrical tubular force-holding body 41 is detachably fixedly assembled with the drum mold docking flange 12 at the other end of the drum mold body 11 through the force-holding docking flange 42, so as to utilize the force-holding body 41 to drive and assemble an external vibrating pile hammer so as to facilitate the overall structure to be driven into the underwater bed a, thereby effectively meeting and completing the requirements of underwater pile foundation construction, and improving the overall functional adaptability and practicality.

[0055] The second supporting ribs 43 are provided in a plurality of groups, and the plurality of second supporting ribs 43 are evenly spaced and obliquely fixedly arranged between the force-holding body 41 and the force-holding docking flange 42 along the circumference, so as to effectively improve the positioning and docking stability performance of the force-holding body 41 through the plurality of second supporting ribs 43.

[0056] The above structure is used for pile foundation construction to achieve the reuse of steel casing. The specific process steps are as follows:

[0057] The entire structure is transported to the construction platform in sections, assembled according to design requirements, and then hoisted into place;

[0058] The hoisted structure is driven into the water bed a by a vibrating pile hammer in conjunction with the clamp holding structure 4. During the driving process, the connection quality of the anti-vibration bolts at each position is checked. The driving depth is sufficient to prevent leakage.

[0059] After the structure is installed, the pile foundation is drilled, the steel cage is installed, and the concrete is poured. Then the water inside the structure is stored to maintain the pile foundation concrete.

[0060] After the maintenance is completed, the flange bolts between the casing formwork structure 1 and the transition connection structure 2 are first removed, and then the shock-proof bolts between the split-type cylinder molds 111 of the casing formwork structure 1 are gradually removed from bottom to top, and the split-type cylinder molds 111 are separated from the pile foundation concrete. The structure is dismantled in two steps to achieve reuse of the structure.

[0061] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A removable and recyclable steel casing structure based on deep-water bridge pile foundation construction, characterized in that: include: The base bottom formwork structure is set as a cylindrical tubular steel formwork; The casing template structure comprises a casing template body, wherein the casing template body is configured as a cylindrical tubular steel template; The cylindrical tubular drum mold body is composed of at least two groups of petal-type drum molds that are closed and connected at corresponding circumferential positions, and the outer edge of one end of the cylindrical tubular drum mold body is detachably fixedly assembled with the outer edge of the top end of the cylindrical tubular basic bottom mold structure.

2. The detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction according to claim 1 is characterized in that: Also includes: The transition connection structure comprises a connection body, wherein the connection body is arranged as a cylindrical tubular structure, and the cylindrical tubular connection body and the cylindrical tubular barrel mold body are arranged correspondingly to the same central axis; The outer edge of one end of the cylindrical tubular connecting body and the outer edge of one end of the drum mold body are detachably fixedly assembled and connected, and the outer edge of the other end of the cylindrical tubular connecting body and the top outer edge of the cylindrical tubular base bottom mold structure are coaxially welded and fixedly connected.

3. The detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction according to claim 2 is characterized in that: The side positions of at least two groups of the split-petal drum molds are connected and assembled in a detachable manner through shock-proof bolts.

4. The detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction according to claim 2 or 3 is characterized in that: Rubber pads are fixedly arranged between the relative connection positions of at least two groups of the split-flap drum molds.

5. The detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction according to claim 2 or 3 is characterized in that: At least two groups of the split-flap cylinder molds have outer side walls fixedly provided with a plurality of groups of annular stiffening ribs and a plurality of groups of longitudinal stiffening ribs respectively; A plurality of groups of annular stiffening ribs and a plurality of groups of longitudinal stiffening ribs are arranged to intersect each other vertically.

6. The detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction according to claim 2 is characterized in that: Both ends of at least two groups of the split-petal-type cylinder molds are fixedly provided with split-petal-type docking flanges, and at least two groups of the split-petal-type docking flanges located at the same end of the cylinder mold body are continuously connected along corresponding circumferential positions to form cylinder mold docking flanges; A transition butt flange is fixedly provided on the outer edge of one end of the cylindrical tubular connecting body, and the outer edge of one end of the cylindrical tubular connecting body is detachably fixedly assembled with the cylinder mold butt flange at one end of the cylinder mold body through the transition butt flange.

7. The detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction according to claim 6 is characterized in that: The transition connection structure also includes a first supporting rib; The first supporting ribs are provided in a plurality of groups, and the plurality of first supporting ribs are evenly spaced and obliquely fixedly arranged between the connecting body and the transition butt flange along the circumference.

8. The detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction according to claim 6 is characterized in that: Also includes: The clamp holding structure includes a holding body; The force-holding body is configured as a cylindrical tubular structure, the cylindrical tubular force-holding body and the cylindrical tubular drum mold body are configured correspondingly to the same central axis, and the outer edge of one end of the cylindrical tubular force-holding body and the other end of the drum mold body are detachably fixedly assembled and connected.

9. The detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction according to claim 8 is characterized in that: A force-holding docking flange is fixedly provided on the outer edge of one end of the cylindrical tubular force-holding body, and the outer edge of one end of the cylindrical tubular force-holding body is detachably fixedly assembled with the cylinder mold docking flange at the other end of the cylinder mold body through the force-holding docking flange.

10. The detachable and recyclable steel casing structure based on deep-water bridge pile foundation construction according to claim 9 is characterized in that: The clamp holding structure further comprises: The second supporting ribs are provided in a plurality of groups, and the plurality of groups of the second supporting ribs are evenly spaced and obliquely fixedly arranged between the force-holding body and the force-holding docking flange along the circumference.

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