High-strength yielding pier column

Abstract

The invention relates to the field of mine roadway supporting, in particular to a high-strength yielding pier stud which comprises a yielding die pipe, a fiber material layer, a yielding assembly and an anti-corrosion pipe, a filling cavity is formed in the yielding die pipe, fiber material reinforced concrete is filled in the filling cavity, the yielding assembly is detachably connected with the bottom of the yielding die pipe, and the fiber material layer is arranged on the fiber material layer. The yielding assembly and the yielding die pipe are arranged in the anti-corrosion pipe, at least part of the top of the yielding die pipe extends out of the anti-corrosion pipe, the yielding assembly shrinks in the extending direction of the anti-corrosion pipe to achieve yielding of the pier column, and the fiber material layer is connected with the anti-corrosion pipe and wraps the peripheral face of the anti-corrosion pipe. According to the high-strength yielding pier column, the corrosivity of the pier column can be improved, and then the stability of surrounding rock supporting is improved.

Description

Technical Field

[0001] The invention relates to the field of mine tunnel support, and in particular to a high-strength yielding pier column. Background Art

[0002] Pillar support is an important form of support for coal mine tunnels. As my country's coal mines move towards high production and efficiency and extend to complex and difficult conditions in depth, pillar support is expected to become a new way to solve the control of tunnel surrounding rock. With the development and changes in pillar materials, equipment, processes, and concepts, the support resistance has leaped from low resistance to high resistance, highlighting the importance and superiority of new pump-filled pillars. Pillar support has been successfully applied in various scenarios such as gob-side tunnels, empty tunnels, small coal pillar dynamic pressure tunnels, and deep soft rock tunnels. It has successfully solved the problems of coal pillar recovery, rapid withdrawal, dynamic pressure control, and soft rock deformation. It can adapt to the needs of high-strength support in deep soft rock tunnels and impact ground pressure tunnels, and is expected to become a new technology for solving the support of deep complex and difficult tunnels.

[0003] During the support process, the existing column support still has problems such as steel tube corrosion or rust, concrete performance degradation and reduced durability in steel structure restraint structures such as steel tube concrete columns due to the long-term effects of complex physical and chemical factors such as acid and alkali erosion and humidity underground, which reduces the stability of the surrounding rock support. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes a high-strength yielding pier column, which can improve the corrosion resistance, compressive strength and deformation adaptability of the pier column, thereby increasing the stability of the supporting surrounding rock.

[0006] The high-strength yielding pier column according to an embodiment of the present invention comprises:

[0007] A die-casting tube, wherein the die-casting tube has a filling cavity therein, and the filling cavity is filled with fiber material reinforced concrete;

[0008] A pressure-releasing assembly and an anti-corrosion pipe, wherein the pressure-releasing assembly is detachably connected to the bottom of the pressure-releasing mold pipe, the pressure-releasing assembly and the pressure-releasing mold pipe are arranged in the anti-corrosion pipe, and the top of the pressure-releasing mold pipe at least partially protrudes from the anti-corrosion pipe, wherein the pressure-releasing assembly shrinks in the extension direction of the anti-corrosion pipe to realize the pressure-releasing of the pier;

[0009] A fiber material layer is connected to the anti-corrosion pipe and is coated on the outer peripheral surface of the anti-corrosion pipe.

[0010] The high-strength yielding pier column of the embodiment of the present invention can improve the corrosion resistance of the pier column and thus the stability of the surrounding rock support.

[0011] In some embodiments, an adhesive is applied between the anti-corrosion tube and the fiber material layer.

[0012] Or, adhesive is applied between the anti-corrosion tube and the fiber material layer and between the anti-corrosion tube and the die-cast tube, and the thickness of the adhesive between the anti-corrosion tube and the fiber material layer is greater than the thickness of the adhesive between the anti-corrosion tube and the die-cast tube.

[0013] Wherein, the adhesive is a thermosetting adhesive.

[0014] In some embodiments, the material of the anti-corrosion pipe is galvanized iron sheet or galvanized steel plate, the material of the fiber material layer is carbon fiber, the fiber material reinforced concrete is steel fiber concrete, and the material of the compression molded pipe is fiber cloth.

[0015] In some embodiments, the fiber material layer is made of at least one of a glass fiber reinforced composite material, an aramid fiber reinforced composite material, and a basalt fiber reinforced composite material.

[0016] In some embodiments, the pressure-releasing assembly includes an upper support component, a damping component, and a lower support component. The top of the upper support component is detachably connected to the anti-corrosion pipe, and the lower end of the upper support component is inserted into the lower support component.

[0017] The upper support component has one end facing the lower support component and a first groove, and the lower support component has one end facing the upper support component and a second groove, and the first groove and the second groove constitute an installation space, and the damping member is at least partially located in the installation space.

[0018] In some embodiments, the upper support component includes a connected upper support plate and an upper support seat, the lower support component includes a connected lower support plate and a lower support seat, the upper support seat is provided with a first groove, the lower support seat is provided with a second groove, one end of the damping member contacts the top of the first groove, and the other end of the damping member contacts the bottom of the second groove,

[0019] The upper support seat is provided with a protrusion, and the lower support seat is provided with a limiting hole connected to the second groove. The protrusion contacts the side wall of the limiting hole, and a preset gap is provided between the bottom of the protrusion and the bottom of the limiting hole.

[0020] In some embodiments, the high-strength pressure-yielding pier column further includes an elastic component, which is sleeved on the upper support seat and the lower support seat, one end of the elastic component abuts against the upper support plate, and the other end of the elastic component abuts against the lower support plate.

[0021] In some embodiments, the radial dimension of the first groove gradually decreases in a direction away from the lower support plate, the second groove includes a first section and a second section, the limiting hole, the first section and the second section are sequentially connected, and the second section gradually decreases in a direction away from the first section.

[0022] The damping member comprises a first portion, a second portion and a third portion connected in sequence, wherein the radial dimension of the first portion gradually decreases in a direction away from the lower support plate, and the radial dimension of the third portion gradually decreases in a direction away from the upper support plate.

[0023] When the top of the first portion contacts the inner wall surface of the top of the first groove, the side wall surface of the first portion and the inner wall surface of the first groove have a first preset distance.

[0024] In some embodiments, the damping element is made of rubber, foamed aluminum or wood.

[0025] In some embodiments, the high-strength yielding pier column further comprises a sealing member, wherein the sealing member is sleeved on the yielding mold tube, and the lower end of the sealing member is connected to the anti-corrosion tube and the fiber material layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of a high-strength pressure-yielding pier column according to an embodiment of the present invention.

[0027] Figure 2 Schematic diagram of a seal according to an embodiment of the present invention.

[0028] Figure 3 is a cross-sectional view of a damping member according to an embodiment of the present invention.

[0029] Figure 4 Schematic diagram of the upper support component of an embodiment of the present invention.

[0030] Figure 5 Schematic diagram of a lower support member and a damping member according to an embodiment of the present invention.

[0031] Figure 6 Schematic diagram of the lower support component of an embodiment of the present invention.

[0032] Figure 7 Schematic diagram of a damping member according to an embodiment of the present invention.

[0033] Figure 8 Schematic diagram of a pressure-releasing component according to an embodiment of the present invention.

[0034] Fig. 9 yes Figure 8 Schematic diagram of the enlarged area in center C.

[0035] Fig.10Schematic diagram of a grouting hole according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] Let the die tube 1,

[0038] Fiber material layer 2,

[0039] The pressing assembly 3, the upper supporting member 31, the upper supporting plate 311, the upper supporting seat 312, the first groove 3121, the protruding portion 3122,

[0040] Damping member 32, first portion 321, second portion 322, third portion 323, lower support member 33, lower support plate 331, lower support seat 332, second groove 3321, limiting hole 3322,

[0041] Anti-corrosion pipe 4, fiber material reinforced concrete 5, adhesive 6, elastic component 7, sealing element 8, arc plate 9, grouting port 10. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0043] According to an embodiment of the present invention, a high-strength yielding pier column includes a yielding mold tube 1, a fiber material layer 2, a yielding assembly 3 and an anti-corrosion tube 4, wherein the yielding mold tube 1 has a filling cavity, and the filling cavity is filled with fiber material reinforced concrete 5, the yielding assembly 3 is detachably connected to the bottom of the yielding mold tube 1, the yielding assembly 3 and the yielding mold tube 1 are arranged in the anti-corrosion tube 4, and the top of the yielding mold tube 1 at least partially extends out of the anti-corrosion tube 4, wherein the yielding assembly 3 shrinks in the extension direction of the anti-corrosion tube 4 to realize the yielding of the pier, the fiber material layer 2 is connected to the anti-corrosion tube 4, and the fiber material layer 2 is coated on the outer peripheral surface of the anti-corrosion tube 4.

[0044] The high-strength yielding pier column of the embodiment of the present invention can improve the corrosion resistance, compressive strength and deformation adaptability of the pier column, thereby increasing the stability of the supporting surrounding rock.

[0045] Specifically, Figures 1 to 10 As shown, the die-casting tube 1 has a filling cavity filled with fiber material reinforced concrete 5, and the lower end of the die-casting tube 1 is connected to the pressure-releasing component 3. The pressure-releasing component 3 is compressed and contracted in the up and down directions to achieve pressure-releasing. Then, when the impact ground pressure hits the pier, the pressure-releasing component 3 contracts in the up and down directions to achieve pressure-releasing under the condition of ensuring a certain support resistance for the surrounding rock supporting the pier.

[0046] Compared with traditional concrete, fiber reinforced concrete 5 has higher compressive and tensile strength, and improves the toughness of concrete in the filling cavity. It also reduces the weight of the entire pier, reduces the difficulty of transporting the pier during transportation, and improves the convenience of using the pier.

[0047] It should be noted that the fiber concrete in the pier is not pre-injected into the compression mold, but a grouting hole 10 is left in the middle and upper part of the compression mold after the entire pier is assembled, and the grouting is injected after ensuring a certain grouting pressure. That is, after the compression mold tube 1, fiber material layer 2, compression assembly 3 and anti-corrosion pipe 4 of the pier are manufactured and installed, a grouting hole 10 is provided in the upper part of the compression mold tube, that is, the end extending out of the anti-corrosion pipe, or a grouting hole 10 is left in the middle and upper part of the pier, and the grouting hole 10 passes through the fiber material layer, the anti-corrosion pipe and the compression mold tube in sequence, so as to facilitate the grouting of the fiber material reinforced concrete into the filling cavity in the compression mold tube.

[0048] The die-cast pipe 1 can be understood as a flexible die-cast pipe, which is made of fiber cloth, has excellent water separation ability, is water-permeable but not slurry-permeable, and can fully contact with the top plate of the tunnel surrounding rock under pressure. The flexible die-cast pipe is designed to be 200mm to 300mm higher than the tunnel. During grouting, it can fully contact the top with pressure under the action of pump pressure. In this way, the pier column can be lighter before grouting, which is convenient for installation and transportation.

[0049] The anticorrosion pipe 4 is provided with a compression assembly 3 and a compression mold pipe 1, the compression mold pipe 1 is filled with fiber material reinforced concrete 5, and the lower end of the compression mold pipe 1 is connected to the upper end of the compression assembly 3, and the outer peripheral surface of the anticorrosion pipe 4 is wrapped with a fiber material layer 2 to increase the strength of the anticorrosion pipe 4. The fiber material layer 2 can not only improve the structural strength of the anticorrosion pipe 4, but also prevent the external substances from directly corroding the anticorrosion pipe 4, and improve the corrosion resistance of the anticorrosion pipe 4. At the same time, the fiber material layer 2 is relatively light in weight compared to metal anticorrosion materials or plastic materials, so as to reduce the weight of the pier.

[0050] The high-strength yielding pier column of the embodiment of the present invention increases the compressive strength of the pier column by setting the fiber material reinforced concrete 5, and the combined constraint structure formed by the fiber material layer 2 and the anti-corrosion pipe 4 ensures that when the fiber concrete is in a compressed state, the pier column has a higher compressive strength, and reduces the weight of the pier column, making it convenient to hang and transport. At the same time, the yielding component 3 is set to shrink in the up and down directions to achieve yielding, so as to achieve impact yielding of the tunnel. The anti-corrosion pipe 4 and the fiber material layer 2 can improve the corrosion resistance and compressive strength of the pier column, and thus the stability of the surrounding rock support.

[0051] Furthermore, the die-cast tube 1 can also be made of metal material, for example, the die-cast tube 1 can be made of a corrugated steel tube, which has a certain strength and a certain flexibility. For example. The corrugated structure of the corrugated steel tube enables the corrugated steel tube to withstand a certain degree of pressure and tension, thereby improving the compressive strength and deformation resistance of the pier. Or the die-cast tube 1 can be made of carbon steel, which has high strength and hardness, can withstand greater pressure and torque, and has good plasticity and toughness, which enables the carbon steel tube to undergo plastic deformation to a certain extent when subjected to stress and is not easy to break.

[0052] In some embodiments, an adhesive is applied between the anti-corrosion tube 4 and the fiber material layer 2.

[0053] Or, adhesive 6 is applied between the anti-corrosion tube 4 and the fiber material layer 2 and between the anti-corrosion tube 4 and the die-cast tube 1, and the thickness of the adhesive between the anti-corrosion tube 4 and the fiber material layer 2 is greater than the thickness of the adhesive 6 between the anti-corrosion tube 4 and the die-cast tube 1,

[0054] The adhesive 6 is a thermosetting adhesive 6 .

[0055] Specifically, Figures 1 to 9 As shown, an adhesive is applied between the anti-corrosion pipe 4 and the fiber material layer 2 to connect the fiber material layer 2 to the anti-corrosion pipe 4. The combined constraint structure formed by the fiber material layer 2, the adhesive, and the anti-corrosion pipe 4 ensures that the fiber concrete has higher compressive strength and deformation resistance when it is in a three-way compression state. At the same time, the constraint structure itself is added with fiber material, which reduces the overall weight and facilitates hanging and transportation.

[0056] Or, adhesive 6 is applied between the anti-corrosion tube 4 and the fiber material layer 2 and between the anti-corrosion tube 4 and the die-cast tube 1, and the thickness of the adhesive between the anti-corrosion tube 4 and the fiber material layer 2 is greater than the thickness of the adhesive 6 between the anti-corrosion tube 4 and the die-cast tube 1,

[0057] The adhesive 6 is a thermosetting adhesive 6 .

[0058] Specifically, Figures 1 to 9 As shown, the thermosetting adhesive 6 plays a connecting role between the anti-corrosion pipe 4 and the fiber material layer 2, and between the anti-corrosion pipe 4 and the die-cast pipe 1. It ensures the close combination between the various components, thereby preventing the intrusion of harmful substances such as moisture and corrosive media. The thermosetting adhesive 6 will solidify after being heated to form a stable chemical structure with high strength, hardness and chemical corrosion resistance.

[0059] The adhesive 6 layers also act as a buffer and vibration reducer, helping to improve the stability and durability of the entire system.

[0060] The thickness of the adhesive between the anti-corrosion tube 4 and the fiber material layer 2 is greater than the thickness of the adhesive 6 between the anti-corrosion tube 4 and the compression mold tube 1, so that the anti-corrosion tube 4 and the compression mold plate can move relative to each other to adapt to the compression of the compression assembly 3. The fiber material usually has a high porosity and surface roughness, which makes the bonding area between it and the anti-corrosion tube 4 relatively large, but also increases the difficulty of bonding. At this time, the thickness of the adhesive needs to be increased. In order to ensure a good bonding effect, a thicker layer of adhesive 6 needs to be applied to fill the pores and increase the bonding force.

[0061] By making the thickness of the adhesive between the anti-corrosion pipe 4 and the fiber material layer 2 greater than the thickness of the adhesive 6 between the anti-corrosion pipe 4 and the die-casting pipe 1, the fiber material layer 2 is prevented from moving relative to the anti-corrosion pipe 4 in the up and down directions before the die-casting pipe 1 when under pressure. That is, when the surrounding rock impacts the ground pressure or other forms of surrounding rock stress changes, the die-casting pipe 1 moves down before the fiber material layer 2 to use the pressure relief of the pressure relief component 3.

[0062] At the same time, the thickness of the adhesive between the anti-corrosion pipe 4 and the fiber material layer 2 is increased to avoid unstable connection of the fiber material layer 2, thereby improving the structural strength of the combined constraint structure formed by the fiber material layer 2, the adhesive and the anti-corrosion pipe 4, and ensuring that when the fiber concrete is in a three-way compression state, it has higher compressive strength and deformation resistance, so as to achieve higher strength compression.

[0063] In some embodiments, the material of the anti-corrosion pipe 4 is galvanized iron sheet or galvanized steel plate, the material of the fiber material layer 2 is carbon fiber, the fiber material reinforced concrete 5 is steel fiber concrete, and the material of the die-cast pipe 1 is fiber cloth.

[0064] Specifically, Figures 1 to 9 As shown, the material of the anti-corrosion pipe 4 is galvanized iron sheet or galvanized steel sheet, which improves the corrosion resistance of the anti-corrosion pipe 4. The galvanized steel sheet has high strength and rigidity, and can withstand large loads and deformations, so that the pier has higher compressive strength and anti-deformation ability. The surface of the galvanized iron sheet is smooth and easy to process and shape.

[0065] The material of the fiber material layer 2 is carbon fiber, which can improve the tensile strength of the pier column, or in other words, carbon fiber has high rigidity and elastic modulus, which makes it difficult to deform and bend when subjected to force, thereby improving the structural strength of the anti-corrosion pipe 4 and the pressure relief template.

[0066] The fiber material reinforced concrete 5 is steel fiber concrete. Compared with traditional concrete, steel fiber concrete has the advantages of high tensile and compressive strength, high shear strength, high impact resistance and high crack resistance.

[0067] The die-cast pipe 1 is made of fiber cloth, which has excellent water separation ability and is water-permeable but not slurry-permeable. The fiber cloth is made into a pipe body and applied to the support structure, which can significantly improve the overall strength of the support system. This strengthening effect helps to resist the pressure of the surrounding rock or soil and maintain the stability of the tunnel.

[0068] The molded tube 1 can be fully in contact with the top plate of the tunnel surrounding rock under pressure, and the flexible molded tube is designed to be 200-300mm higher than the tunnel. During grouting, it can be fully connected to the top under the action of pump pressure. In this way, the pier column can be lighter before grouting, which is convenient for installation and transportation.

[0069] The combined constraint structure formed by carbon fiber, adhesive, galvanized iron sheet or galvanized steel plate ensures that the steel fiber concrete is in a three-way compression state, giving it higher compressive strength and deformation resistance. At the same time, the constraint structure itself is light in weight, easy to hang and transport, and the pier diameter can be designed according to demand.

[0070] Furthermore, the material of the fiber material layer 2 is at least one of glass fiber reinforced composite material, aramid fiber reinforced composite material, and basalt fiber reinforced composite material. Different types of fiber material layers 2 can be used for different types of requirements to improve the applicability of the fiber material layer 2.

[0071] In some embodiments, the pressure-releasing assembly 3 includes an upper support component 31, a damping component 32 and a lower support component 33. The top of the upper support component 31 is detachably connected to the anti-corrosion pipe 4, and the lower end of the upper support component 31 is inserted into the lower support component 33.

[0072] The upper support component 31 has a first groove 3121 at one end facing the lower support component 33, and the lower support component 33 has a second groove 3321 at one end facing the upper support component 31. The first groove 3121 and the second groove 3321 constitute an installation space, and the damping member 32 is at least partially located in the installation space.

[0073] Specifically, Figures 1 to 9 As shown, due to the limitation of the anti-corrosion pipe 4 and the fiber material layer 2 on the yielding mold pipe 1 and the yielding assembly 3, the top of the upper support component 31 is detachably connected to the anti-corrosion pipe 4, so that the yielding assembly 3 can be replaced when the pier is manufactured, without the need to integrally form or weld the yielding assembly 3 and the yielding mold plate.

[0074] The damping member 32 is arranged in the first groove 3121 and the second groove 3321, the upper end of the damping member 32 contacts the upper wall surface of the first groove 3121, and the lower end of the damping member 32 contacts the lower wall surface of the second groove 3321, so that the damping member 32 supports the upper support component 31 in the vertical direction to cope with the pressure of the surrounding rock movement of the tunnel on the upper support component 31, and the damping member 32 deforms and contracts in the vertical direction to achieve the pressure relief of the pier. The first groove 3121 and the second groove 3321 are used to limit the damping member 32, so as to prevent the pressure relief of the damping member 32 from causing the upper support component 31 and the lower support component 33 to be displaced in the horizontal direction, thereby improving the stability of the pier.

[0075] In some embodiments, the upper support component 31 includes a connected upper support plate 311 and an upper support seat 312, the lower support component 33 includes a connected lower support plate 331 and a lower support seat 332, the upper support seat 312 is provided with a first groove 3121, the lower support seat 332 is provided with a second groove 3321, one end of the damping member 32 contacts the top of the first groove 3121, and the other end of the damping member 32 contacts the bottom of the second groove 3321.

[0076] The upper support seat 312 is provided with a protrusion 3122, and the lower support seat 332 is provided with a limiting hole 3322 connected to the second groove 3321. The protrusion 3122 contacts the side wall of the limiting hole 3322, and a preset gap is provided between the bottom of the protrusion 3122 and the bottom of the limiting hole 3322.

[0077] Specifically, Figures 1 to 9 As shown, the lower end of the upper support plate 311 is connected to the upper support seat 312, and the upper end of the lower support plate 331 is connected to the upper support seat 312. A first groove 3121 is provided on the lower side of the upper support seat 312, and a second groove 3321 is provided on the upper side of the lower support seat 332. The upper end of the damping member 32 is arranged in the first groove 3121, and the lower end of the damping member 32 is arranged in the second groove 3321.

[0078] The upper support seat 312 is provided with a protrusion 3122, which is annular. The lower support seat 332 is provided with a limiting hole 3322. The protrusion 3122 moves in the up and down direction to extend into or out of the limiting hole 3322.

[0079] A preset gap A is provided between the bottom of the protrusion 3122 and the bottom of the limiting hole 3322, so that after installation, the force of the compression mold plate and the upper support component 31 is transmitted to the damping member 32, and the damping member 32 can be deformed in the up-down direction, and the damping member 32 shrinks in the up-down direction. The damping member 32 shrinks to move the upper support seat 312 downward, and the preset gap A is reduced, so as to achieve pressure release. When the preset gap is zero, the bottom of the protrusion 3122 contacts the bottom of the limiting hole 3322, and the upper support seat 312 is inserted into the lower support seat 332 to avoid the pressure release assembly 3 from continuing to deform, to achieve appropriate pressure release, and to improve the stability of the pier column. When the preset gap is zero, the bottom of the protrusion 3122 contacts the bottom of the limiting hole 3322, and the upper support seat 312 is inserted into the lower support seat 332 to avoid the upper support seat 312 and the lower support seat 332 from moving in the horizontal direction, thereby improving the stability of the pier column.

[0080] In some embodiments, the high-strength yield pier column further includes an elastic component 7, which is sleeved on the upper support seat 312 and the lower support seat 332, with one end of the elastic component 7 abutting against the upper support plate 311 and the other end of the elastic component 7 abutting against the lower support plate 331.

[0081] The elastic component 7 is sleeved on the upper support seat 312 and the lower support seat 332, and the upper and lower ends of the elastic component 7 are respectively in contact with the upper support plate 311 and the lower support plate 331. By setting the elastic component 7, when the surrounding rock of the tunnel has a small deformation force or impact force, the elastic component 7 supports the pressure plate through the upper support component 31.

[0082] In some embodiments, the radial dimension of the first groove 3121 gradually decreases in the direction away from the lower support plate 331, the second groove 3321 includes a first section and a second section, the limiting hole 3322, the first section and the second section are sequentially connected, and the second section gradually decreases in the direction away from the first section.

[0083] The damping member 32 includes a first portion 321, a second portion 322 and a third portion 323 which are connected in sequence. The radial dimension of the first portion 321 gradually decreases in a direction away from the lower support plate 331, and the radial dimension of the third portion 323 gradually decreases in a direction away from the upper support plate 311.

[0084] When the top of the first portion 321 contacts the inner wall surface of the top of the first groove 3121 , the side wall surface of the first portion 321 and the inner wall surface of the first groove 3121 have a first preset distance.

[0085] Specifically, Figures 1 to 9 As shown, the upper section of the first section is connected to the limiting hole 3322, and the upper end of the second section is connected to the lower end of the first section.

[0086] The radial dimension of the first portion 321 gradually increases from top to bottom, and the radial dimension of the third portion 323 gradually decreases from top to bottom. There is a first preset distance B between the side wall surface of the first portion 321 and the side wall surface of the first groove 3121. Furthermore, there is a second preset distance B between the side wall surface of the second groove 3321 and the side wall surface of the third portion 323.

[0087] By setting the first preset spacing and the second preset spacing, when the damping member 32 is deformed to release pressure, the damping member 32 can be deformed in the direction of the side wall of the first groove 3121 or the second groove 3321, so that the upper support seat 312 and the lower support seat 332 only move relative to each other in the up and down directions when releasing pressure, avoiding relative movement in the horizontal direction. The horizontal direction is orthogonal to the up and down direction, and the up and down direction can be the direction of gravity.

[0088] The high-strength pressure-yielding pier column of the embodiment of the present invention is provided with a damping member 32 , a first groove 3121 , and a second groove 3321 , and a first preset distance B is provided between the side wall surface of the first portion 321 and the side wall surface of the first groove 3121 . There is a second preset distance between the side wall surface of the second groove 3321 and the side wall surface of the third part 323, so that when the damping member 32 is deformed by the pressure release, the distance between the side wall surface of the damping member 32 and the side walls of the first groove 3121 and the second groove 3321 can make the deformed damping member 32 invade between the first preset distance and the second distance, thereby preventing the material of the damping member 32 after deformation from bursting out between the upper support seat 312 and the lower support seat 332, and preventing the deformation of the damping member 32 from extending into the first groove 3121 and the second groove 3321 during the pressure release, resulting in relative movement in the horizontal direction between the upper support seat 312 and the lower support seat 332. In addition, by setting the protrusion 3122 and the limiting hole 3322, the contraction of the pressure release assembly 3 in the upper and lower directions during the pressure release is limited, thereby improving the stability of the pressure release assembly 3.

[0089] Furthermore, the material of the damping member 32 is any one of rubber, foamed aluminum or wood. Rubber material has good elasticity and high damping performance, and can effectively absorb and disperse vibration energy. Foamed aluminum is a lightweight porous material that combines the high strength of metal and the good damping performance of foamed materials. Foamed aluminum damping member 32 is commonly used in aerospace, rail transportation and other fields to reduce structural vibration and noise while reducing weight. Foamed aluminum has good energy absorption capacity and impact resistance, and is easy to recycle and reuse. Wood, as a natural material, has certain damping properties and reduces costs.

[0090] Further, the pressure assembly 3 can be arranged on the top of the pressure die tube 1, in which case the pressure die tube 1 is completely located in the anti-corrosion tube 4, or the pressure assembly 3 is arranged on the top of the anti-corrosion tube 4, so that the pressure assembly 3 is in contact with or connected to the surrounding rock of the tunnel above or the component to be supported. Further, the damping member 32 is also provided with a through hole that penetrates the first part 321, the second part 322 and the third part 323 from the top and bottom directions, so as to remove part of the heat energy during deformation through the through hole. The stability of the damping member 32 during use is improved.

[0091] Furthermore, the yielding assembly 3 includes a plurality of arc plates 9, the upper ends of the arc plates 9 are connected to the yielding die tube 1, and the lower ends of the arc plates 9 are connected to the lower support plate 331 of the lower support seat 332, so as to improve the rigidity and deformation resistance of the yielding assembly 3. For example, the material of the arc plates 9 is carbon steel, which can withstand certain deformation.

[0092] In some embodiments, the high-strength yielding pier column further includes a seal 8 , which is sleeved on the yielding mold tube 1 , and the lower end of the seal 8 is connected to the anti-corrosion tube 4 and the fiber material layer 2 .

[0093] Specifically, Figures 1 to 9 As shown, the seal 8 is arranged on the top of the compression molded tube 1. The seal 8 can be a sealing ring, or the seal 8 can be a discarded automobile tire, etc. After the automobile tire is cleaned, it is mounted on the top of the compression molded plate. The automobile tire can also be connected to the compression molded tube 1 and the anti-corrosion tube 4 and the fiber material layer 2 through an adhesive 6 to seal the anti-corrosion tube 4 and the top of the fiber material to prevent corrosive substances from extending from the top of the pier into the anti-corrosion tube 4 or between the fiber materials, thereby improving the stability of the use of the anti-corrosion tube 4 and the fiber material, and preventing corrosive substances from corroding the pier through the top anti-corrosion tube 4 and the unprotected top of the compression molded tube 1 of the fiber material layer 2, thereby improving the stability of the use of the pier.

[0094] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0095] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0096] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0098] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0099] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A high-strength yielding pier column, characterized in that: include: A die-casting tube, wherein the die-casting tube has a filling cavity therein, and the filling cavity is filled with fiber material reinforced concrete; A pressure-releasing assembly and an anti-corrosion pipe, wherein the pressure-releasing assembly is detachably connected to the bottom of the pressure-releasing mold pipe, the pressure-releasing assembly and the pressure-releasing mold pipe are arranged in the anti-corrosion pipe, and the top of the pressure-releasing mold pipe at least partially protrudes from the anti-corrosion pipe, wherein the pressure-releasing assembly shrinks in the extension direction of the anti-corrosion pipe to realize the pressure-releasing of the pier; A fiber material layer is connected to the anti-corrosion pipe and is coated on the outer peripheral surface of the anti-corrosion pipe.

2. The high-strength pressure-yielding pier column according to claim 1, characterized in that: An adhesive is applied between the anti-corrosion pipe and the fiber material layer. Or, adhesive is applied between the anti-corrosion tube and the fiber material layer and between the anti-corrosion tube and the die-cast tube, and the thickness of the adhesive between the anti-corrosion tube and the fiber material layer is greater than the thickness of the adhesive between the anti-corrosion tube and the die-cast tube. Wherein, the adhesive is a thermosetting adhesive.

3. The high-strength pressure-yielding pier column according to claim 2, characterized in that: The material of the anti-corrosion pipe is galvanized iron sheet or galvanized steel plate, the material of the fiber material layer is carbon fiber, the fiber material reinforced concrete is steel fiber concrete, and the material of the die-cast pipe is fiber cloth.

4. The high-strength pressure-yielding pier column according to claim 1, characterized in that: The material of the fiber material layer is at least one of a glass fiber reinforced composite material, an aramid fiber reinforced composite material, and a basalt fiber reinforced composite material.

5. The high-strength pressure-yielding pier column according to claim 3 is characterized in that: The pressure-releasing assembly includes an upper support component, a damping component and a lower support component. The top of the upper support component is detachably connected to the anti-corrosion pipe, and the lower end of the upper support component is inserted into the lower support component. The upper support component has one end facing the lower support component and a first groove, and the lower support component has one end facing the upper support component and a second groove, and the first groove and the second groove constitute an installation space, and the damping member is at least partially located in the installation space.

6. The high-strength pressure-yielding pier column according to claim 5, characterized in that: The upper support component includes a connected upper support plate and an upper support seat, the lower support component includes a connected lower support plate and a lower support seat, the upper support seat is provided with a first groove, the lower support seat is provided with a second groove, one end of the damping member contacts the top of the first groove, and the other end of the damping member contacts the bottom of the second groove, The upper support seat is provided with a protrusion, and the lower support seat is provided with a limiting hole connected to the second groove. The protrusion contacts the side wall of the limiting hole, and a preset gap is provided between the bottom of the protrusion and the bottom of the limiting hole.

7. The high-strength pressure-yielding pier column according to claim 6, characterized in that: It also includes an elastic component, which is sleeved on the upper support seat and the lower support seat, one end of the elastic component abuts against the upper support plate, and the other end of the elastic component abuts against the lower support plate.

8. The high-strength pressure-yielding pier column according to claim 6, characterized in that: The radial dimension of the first groove gradually decreases in a direction away from the lower support plate, the second groove includes a first section and a second section, the limiting hole, the first section and the second section are sequentially connected, and the second section gradually decreases in a direction away from the first section. The damping member comprises a first portion, a second portion and a third portion connected in sequence, wherein the radial dimension of the first portion gradually decreases in a direction away from the lower support plate, and the radial dimension of the third portion gradually decreases in a direction away from the upper support plate. When the top of the first portion contacts the inner wall surface of the top of the first groove, the side wall surface of the first portion and the inner wall surface of the first groove have a first preset distance.

9. The high-strength pressure-yielding pier column according to any one of claims 5 to 8, characterized in that: The damping element is made of any one of rubber, foam aluminum or wood.

10. The high-strength pressure-yielding pier column according to claims 1-9, characterized in that: It also includes a sealing member, which is sleeved on the compression mold tube, and the lower end of the sealing member is connected to the anti-corrosion tube and the fiber material layer.

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