An elastic inner corrugated steel clamp with locking and confining pressure adjustment functions

Abstract

The present invention discloses an elastic inner corrugated steel clamp with locking and confining pressure adjustment functions, comprising: a clamp body, which comprises two semicircular clamp pieces arranged oppositely; an inner liner, which is a corrugated structure continuously arranged along the axial direction of the clamp body, and is sleeved on the inner arc surface of the semicircular clamp piece; a plurality of locking devices, which are located at the bottom of the inner liner and arranged at intervals along the circumference of the clamp body, and any locking device is arranged to limit the downward axial displacement of the inner liner; a plurality of confining pressure devices, which are arranged at intervals along the circumference of the clamp body, and any confining pressure device is fixed on the inner side along the axial direction of the clamp body, and the confining pressure device is arranged to adjust the pressure between the clamp body and the column. The present invention arranges a layer of corrugated inner liner on the inner side of the clamp, and the inner liner undergoes elastic deformation under the action of external force, thereby increasing the bite force between the clamp and the column. At the same time, in combination with the locking device and the confining pressure device, the relative displacement between the steel clamp and the column during use can be effectively suppressed, thereby ensuring the structural stability.

Description

Technical Field

[0001] The present invention relates to the technical field of structural engineering, and more specifically, to an elastic inner corrugated steel clamp with locking and confining pressure adjustment functions. Background Art

[0002] In order to ensure the smooth construction of the upper main structure during building structure construction, a large number of construction scaffolds are often used, and foundation treatment is required, using expanded foundations or pile foundations, or even setting up underwater foundations, which are costly and take a long time to complete.

[0003] Based on the above problems, during the construction of temporary structures, hoop can be used to replace the construction support as the supporting structure. For example, during the construction of bridge cap beams and superstructures, hoop bracket load-bearing structures are set on the circular piers to support the upper beam system. It has the advantages of being reusable, quick and convenient construction, easy transportation, no need to set embedded parts on the surface of the structure in advance, and no damage to the structure. However, since the traditional hoop and the column only rely on friction to transfer load, its bearing capacity is limited, its scope of use is also restricted, and it is easy to cause safety hazards during construction.

[0004] In order to solve the above problems, it is necessary to design a new clamp structure to improve the bearing capacity of the clamp and ensure its structural stability. Summary of the invention

[0005] The purpose of the present invention is to provide an elastic inner corrugated steel clamp with locking and confining pressure adjustment functions. By arranging a layer of corrugated inner liner on the inner side of the clamp, the inner liner undergoes elastic deformation under the action of external force, thereby increasing the bite force between the clamp and the column. At the same time, in conjunction with the locking device and the confining pressure device, the relative displacement between the steel clamp and the column during use can be effectively suppressed, thereby ensuring the structural stability.

[0006] In order to achieve these purposes and other advantages according to the present invention, an elastic inner corrugated steel clamp with locking and confining pressure adjustment functions is provided, comprising:

[0007] The hoop body comprises two semicircular hoop pieces with inner arc surfaces facing each other, and the two semicircular hoop pieces are detachably connected to form a cylindrical cavity;

[0008] The inner liner is a corrugated structure continuously arranged along the axial direction of the hoop body, and the inner liner is sleeved on the inner arc surface of the semicircular hoop sheet and fixedly connected thereto;

[0009] A plurality of locking devices, which are located at the bottom of the inner liner and are arranged at intervals along the circumference of the hoop body on the inner arc surface of the semicircular hoop piece, and any locking device is configured to limit the downward axial displacement of the inner liner;

[0010] A plurality of confining pressure devices are arranged at intervals along the circumference of the hoop body, any of the confining pressure devices is fixed to the inner wall of the hoop body along the axial direction of the hoop body, the plurality of confining pressure devices separate the inner liner into a plurality of corrugated plates of the same height, the confining pressure devices and the corrugated plates are continuously and alternately arranged along the circumference of the semicircular hoop piece, and the confining pressure devices are configured to adjust the pressure between the hoop body and the column.

[0011] Preferably, for the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions, both ends of any semicircular hoop piece are bent outwards to form hoop ears, and the hoop ears of the two semicircular hoop pieces are fixedly connected by bolts.

[0012] Preferably, the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions further includes a plurality of stiffening ribs, which are arranged at intervals along the axial direction of the clamp body on the outside of the clamp ear, and any stiffening rib is fixedly connected to the outer arc surface of the clamp ear and the semicircular clamp piece.

[0013] Preferably, the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions, the locking device comprises:

[0014] A locking box, which is located below the inner liner and fixed on the inner side wall of the hoop body, the locking box is a hollow structure and the thickness along the radial direction of the hoop body is equal to the wave height of the inner liner, and an open groove is provided on the side of the lower part of the locking box facing the axis of the hoop body;

[0015] A rotating disk is vertically arranged inside the locking box and rotatably connected thereto through a rotating shaft, the rotating shaft is horizontally arranged along the tangent direction of the hoop body, the rotating disk is a fan-shaped structure with a radius gradually increasing from the top to the bottom, the arc surface of the rotating disk is arranged opposite to one side of the opening groove and the bottom end coincides with the opening groove;

[0016] A wedge block is arranged between the locking box and the inner liner, and its right-angle waist is in contact with the inner wall of the hoop body. The top of the wedge block is clamped between the bottom of the inner liner and the hoop body, and the bottom of the wedge block penetrates into the locking box and abuts against the top of the turntable.

[0017] Preferably, the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions, the locking device also includes a rack 1, which is arranged at the overlapped position of the arc surface of the turntable and the opening groove; and a rack 2, which is arranged on the inner side wall of the bottom of the inner tank.

[0018] Preferably, the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions, the confining pressure device is at least one airbag, which is arranged along the circumference of the clamp body and fixed on its inner wall, any one of the airbags is a strip rubber bag arranged along the axial direction of the clamp body, and an inflation hole is provided on the top of the airbag.

[0019] Preferably, in the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions, the multiple confining pressure devices are arranged in pairs, and any two corresponding confining pressure devices are symmetrical along the axial direction of the clamp body.

[0020] Preferably, for the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions, the inner liner, the confining pressure device and the top end of the clamp body are located in the same horizontal plane, and the bottom ends of the locking device and the confining pressure device are located in the same horizontal plane.

[0021] The present invention has at least the following beneficial effects:

[0022] 1. By setting a corrugated inner liner, a cavity is formed between the hoop body and the column. When the hoop is tightened, the column surface will produce elastic deformation corresponding to the elastic inner corrugation, so that the bite force is generated between the hoop body and the column through the interlocking effect, thereby increasing the load transfer capacity between the hoop and the column;

[0023] 2. The inner liner can undergo elastic deformation when the hoop is subjected to dynamic load or impact load, or undergo plastic deformation before the hoop body and the column break through the elastic limit, thereby consuming energy, playing a certain buffering role on the force between the hoop and the column, and reducing or preventing the deformation and damage of the hoop structure;

[0024] 3. By setting a locking device at the bottom of the inner tank, when the steel hoop slides down as a whole or has a tendency to slide down, the turntable in the locking device rotates upward or forms a rotation trend, pushing the wedge block to move upward or form a movement trend, thereby pressing the bottom of the inner tank and the column tightly, and the extrusion force at the bottom can effectively prevent the steel hoop from sliding down;

[0025] 4. The confining pressure device and the inner liner together form a continuous annular structure that is sleeved in the hoop body. When the confining pressure device is working, on the one hand, the friction between the steel hoop and the column is controlled by adjusting the pressure between the hoop body and the column, which plays a role in flexibly adjusting the bearing capacity of the steel hoop; on the other hand, it supports and squeezes the inner liner from the side, further compressing the inner liner, so that the connection between the inner liner and the hoop body is stable and reliable;

[0026] 5. The steel hoop of the present invention has a simple structure, can be assembled, is easy to assemble and disassemble, and has a high material reuse rate, which can greatly save construction costs, speed up construction progress and shorten construction period.

[0027] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the planar structure of an elastic inner corrugated steel clamp with locking and confining pressure adjustment functions according to an embodiment of the present invention;

[0029] Figure 2 AA sectional elevation structural schematic diagram of the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions described in the above embodiment;

[0030] Figure 3 It is a schematic diagram of the BB cross-sectional elevation structure of the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions described in the above embodiment;

[0031] Figure 4 It is a schematic diagram of the elevation structure of the elastic inner corrugated steel clamp with locking and confining pressure adjustment functions described in the above embodiment;

[0032] Figure 5 is a schematic structural diagram of the locking device described in the above embodiment;

[0033] Figure 6 is a schematic structural diagram of the confining pressure device described in the above embodiment;

[0034] Figure 7 Schematic diagram of the internal structure of the locking device in the above embodiment.

[0035] Description of reference numerals:

[0036] 1. Elastic inner corrugated steel clamp; 101. clamp body; 102. liner; 103. stiffening rib; 104. bolt; 105. clamp ear; 106. cavity; 107. rack 2; 2. column; 3. locking device; 301. turntable; 302. wedge block; 303. rotating shaft; 304. locking box; 305. rack 1; 4. confining pressure device; 401. inflation hole. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0038] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] like Figure 1-7As shown, the present invention provides an elastic inner corrugated steel clamp 1 with locking and confining pressure adjustment functions, comprising:

[0040] The hoop body 101 comprises two semicircular hoop pieces with inner arc surfaces facing each other, and the two semicircular hoop pieces are detachably connected to form a cylindrical cavity 106;

[0041] The inner liner 102 is a corrugated structure continuously arranged along the axial direction of the hoop body 101. The inner liner 102 is sleeved on the inner arc surface of the semicircular hoop sheet and fixedly connected thereto;

[0042] A plurality of locking devices 3, which are located at the bottom of the inner liner 102 and are arranged at intervals along the circumference of the hoop body 101 on the inner arc surface of the semicircular hoop piece, and any locking device 3 is configured to limit the downward axial displacement of the inner liner 102;

[0043] A plurality of confining pressure devices 4 are arranged at intervals along the circumference of the hoop body 101, and any confining pressure device 4 is fixed to the inner wall of the hoop body 101 along the axial direction of the hoop body 101. The plurality of confining pressure devices 4 separate the inner liner 102 into a plurality of corrugated plates of the same height. The confining pressure devices 4 and the corrugated plates are continuously and alternately arranged along the circumference of the semicircular hoop piece, and the confining pressure devices 4 are configured to adjust the pressure between the hoop body 101 and the column 2.

[0044] In the above technical solution, the hoop body 101 is formed by two identical semicircular hoop pieces, and the two semicircular hoop pieces can be connected (detachably) by high-strength bolts. The inner liner 102 and the semicircular hoop pieces are welded to form a whole. The inner liner 102 can be formed by bending a thin steel plate, and its shape can be an arc line shape, a sine function shape, a round end shape, a rectangle, a sawtooth shape, etc. After the hoop body 101 is embraced, it is sleeved on the column 2 to be constructed. The column 2 in this embodiment is a reinforced concrete column. A box-type or I-shaped steel corbel is provided at the middle outer position of the two semicircular hoops, which is used to carry the template required for the upper construction, etc., and transfer the load to the column 2 through the body. The liner 102 arranged on the inner side of the semicircular hoop piece is an elastic corrugated liner 102, and cavities 106 are formed between the corrugated liner 102 and the hoop body 101 and the column 2 (between the liner 102 and the hoop body 101, and between the liner 102 and the column 2). When the two semicircular hoop pieces are connected, the pre-tightening force generated by the high-strength bolt connection will make the elastic corrugated liner 102 close to the surface of the column 2 under the tightening action of the hoop body 101, and because the raised part of the corrugation applies a relatively concentrated positive pressure to the column 2 and the concave part does not exert a force on the surface of the column 2, the surface of the column 2 produces an elastic deformation corresponding to the liner 102, and then the liner 102 and the column 2 are embedded in each other to form a bite force, thereby increasing the load transfer capacity between the column 2 and the hoop, thereby making the connection between the steel hoop and the column 2 more stable and improving the maximum load force that the steel hoop can withstand. At the same time, when the temporary structure supported by the steel hoop is subjected to impact force during construction, the inner liner 102 located between the column 2 and the hoop body 101 will undergo elastic deformation or first break through the elastic limit and undergo plastic deformation, thereby consuming part of the energy, preventing the concrete column 2 from cracking under sudden impact, and playing a certain buffering and protective role on the connection between the hoop body 101 and the column 2.

[0045] In addition, during construction, there is a situation where the temporary structure supported by the steel hoop is subjected to a large instantaneous impact force, which can easily lead to an unstable connection between the steel hoop and the column 2, causing the temporary structure (construction platform, etc.) to shake and sink. In order to further enhance the stability of the steel hoop and the column 2 as an integral construction system, a locking device 3 is provided at the lower part of the hoop body 101 and the inner liner 102, which is fixed to the bottom of the inner liner 102 and can respond instantly to the displacement or vibration between the inner liner 102 and the column 2, thereby quickly and effectively suppressing the downward displacement or displacement trend of the steel hoop relative to the column 2; a plurality of confining pressure devices 4 are arranged at intervals on the inner wall of the hoop body 101, and the pressure between the hoop body 101 and the column 2 can be adjusted according to the actual construction conditions. The confining pressure devices 4 are arranged at intervals around the inner circumference of the hoop body 101, and together with a plurality of corrugated plates (inner liner 102) form an annular structure that is sleeved on a semicircular hoop sheet, so that the confining pressure device 4 can evenly apply pressure to the outer wall of the column 2 and the inner wall of the hoop body 101, while adjusting the relative pressure between the column 2 and the hoop body 101, ensure the force balance between the two, and prevent problems such as structural deformation caused by uneven force. The confining pressure device 4 is not only applicable to situations where the connection between the steel hoop and the column 2 needs to be strengthened to achieve the effect of suppressing the relative displacement between the hoop body 101 and the column 2, but also applicable to situations where the column 2 or the steel hoop undergoes unequal changes under the influence of external environmental conditions or other factors. For example, when the diameter of the column 2 increases, but the inner diameter of the steel hoop remains unchanged or the increase is less than the increase of the column 2, the pressure between the steel hoop and the column 2 increases significantly. When the value of the pressure increase exceeds a certain range, the lateral (horizontal) bearing pressure of the steel hoop or the column 2 exceeds its specified threshold value, which may cause structural deformation or damage of the steel hoop or the column 2. To avoid the above problems, a pressure sensor can be set between the column 2 and the steel hoop to feedback the pressure parameter value in real time, and the pressure between the column 2 and the steel hoop can be adaptively adjusted through the confining pressure device 4 to keep it within a safe range. The locking device 3 and the confining pressure device 4 reinforce the connection between the steel hoop and the column 2 from the bottom and the side respectively, and can respond and act on the connection status between the steel hoop and the column according to the actual construction situation. Among them, the locking device 3 acts between the inner liner 102 and the hoop body 101, and the confining pressure device 4 acts directly between the hoop body 101 and the column 2, which jointly ensures the connection stability between the steel hoop and the column from multiple positions, thereby improving the stability of the overall construction system.

[0046] The present invention provides a corrugated inner liner 102, so that cavities 106 are formed between the inner liner 102 and the hoop body 101 and the column 2, respectively, so that when the steel hoop is tightened, elastic deformation corresponding to the elastic inner corrugation is generated on the surface of the column 2, and a bite force is generated between the steel hoop and the column through the interlocking effect, thereby increasing the load transfer capacity between the steel hoop and the column, that is, increasing the load capacity of the steel hoop. At the same time, the elastic corrugated inner liner undergoes elastic deformation when subjected to dynamic loads or impact loads, or undergoes plastic deformation before the hoop body and the column break through the elastic limit, thereby consuming energy, which can reduce or prevent structural damage. In addition, without changing the external structure, by providing a locking device and a confining pressure device, which cooperate with the original internal structure of the steel hoop, the relative displacement between the steel hoop and the column in the working state is effectively suppressed, and at the same time, the adaptive adjustment of the pressure between the steel hoop and the column is achieved, which greatly improves the stability of the overall construction structure.

[0047] In another technical solution, the elastic inner corrugated steel hoop 1 with locking and confining pressure adjustment functions, the two ends of any semicircular hoop piece are bent outward to form hoop ears 105, and the hoop ears 105 of the two semicircular hoop pieces are fixedly connected by bolts 104. Two hoop ears 105 are formed at the two ends of any semicircular hoop ear 105, and the hoop ears 105 extend radially outward from the semicircular hoop piece. The four hoop ears 105 of the two semicircular hoop pieces are connected in pairs, so that it is convenient to use bolts 104 to lock the plane formed by the corresponding hoop ears 105 of the two semicircular hoop pieces. Compared with the arc surface of the original contact surface of the two semicircular hoop pieces (without hoop ears), it is more convenient for operators to construct, and the steel hoop can be quickly installed on the column or removed; wherein, the bolts 104 are high-strength bolts, and their number, number of rows, etc. need to be calculated according to the actual construction situation (steel hoop size, design load, column strength, etc.).

[0048] In another technical solution, the elastic inner corrugated steel clamp 1 with locking and confining pressure adjustment functions further includes a plurality of stiffening ribs 103, which are arranged at intervals along the axial direction of the clamp body 101 on the outside of the clamp ear 105, and any stiffening rib 103 is fixedly connected to the clamp ear 105 and the outer arc surface of the semicircular clamp piece. Specifically, in this embodiment, four groups of stiffening ribs 103 are respectively arranged on the outside of the four hoop ears 105. Any group of stiffening ribs 103 includes a plurality of stiffening ribs 103 arranged at intervals along the height direction of the corresponding hoop ears 105 to ensure the strength of the semicircular hoop piece in the bending section. Since the two semicircular hoop pieces are fixed by locking the hoop ears 105 with bolts 104, when the steel hoop is subjected to force, the main force-bearing structure inside the steel hoop is the connection of the two semicircular hoop pieces, that is, the connection surface of the two corresponding hoop ears 105. The transverse stiffening ribs are arranged in the bending section of the semicircular hoop piece (between the hoop ears and the outer arc surface of the semicircular hoop piece) to prevent pressure loss caused by deformation, and enhance the pressure bearing capacity while protecting the stability of the hoop body structure. Among them, the arrangement quantity, position, form, size, etc. of the stiffening ribs should be determined according to the actual engineering situation through engineering experience or calculation.

[0049] In another technical solution, the elastic inner corrugated steel clamp 1 with locking and confining pressure adjustment functions, the locking device 3 includes:

[0050] A locking box 304, which is located below the inner liner 102 and fixed on the inner side wall of the hoop body 101, the locking box 304 is a hollow structure and the thickness along the radial direction of the hoop body 101 is equal to the wave height of the inner liner 102, and an open groove is provided on the side of the lower part of the locking box 304 facing the axis of the hoop body 101;

[0051] A rotating disk 301 is vertically arranged inside the locking box 304 and rotatably connected thereto via a rotating shaft 303, wherein the rotating shaft 303 is horizontally arranged along the tangent direction of the hoop body 101, and the rotating disk 301 is a fan-shaped structure with a radius gradually increasing from the top to the bottom, wherein the arc surface thereof is arranged opposite to one side of the opening groove and the bottom end coincides with the opening groove;

[0052] The wedge block 302 is arranged between the locking box 304 and the inner liner 102 and the right-angle waist is in contact with the inner wall of the hoop body 101. The top of the wedge block 302 is clamped between the bottom of the inner liner 102 and the hoop body 101. The bottom of the wedge block 302 penetrates into the locking box 304 and abuts against the top of the turntable 301.

[0053] In the above technical solution, multiple locking devices 3 are arranged along the circumference of the hoop body 101, and multiple locking devices 3 are arranged in groups of two, and any group of locking devices 3 includes two locking devices 3 symmetrically arranged relative to the axis of the hoop body 101. Among them, the locking box 304 is correspondingly arranged below the inner liner 102, and the thickness of the locking box 304 along the radial direction of the hoop body 101 is equal to the wave height of the corrugated inner liner 102, that is, the inner side wall of the locking box 304 abuts (presses) against the surface of the column 2 during installation; the inner side wall of the locking box 304 is the same inner arc surface as the hoop body 101, and after the steel hoop is connected to the column 2, the inner arc surface of the locking box 304 can fit with the outer side wall of the column 2. The turntable 301 and the wedge block 302 are both movable structures. The turntable 301 is a fan-shaped structure with unequal radii at both ends. Its top end abuts against the bottom of the wedge block 302, and the bottom end is located at the opening groove of the locking box 304. When the steel hoop slides relative to the column 2 as a whole, the turntable 301 will rotate in the opposite direction of the movement of the steel hoop under the action of friction. The wedge block 302 is clamped between the inner liner 102, the hoop body 101 and the turntable 301. The wedge block 302 is vertically arranged. Its right-angled waist fits with the inner wall of the hoop body 101, the top of the inclined waist forms an obtuse angle with the upper bottom and matches the inclined direction of the corrugation at the bottom end of the inner liner 102, and the bottom end of the inclined waist forms an acute angle with the lower bottom. When the turntable 301 rotates, due to the change in the radius of the turntable 301, the position of the wedge block 302 will also change upward / downward accordingly, thereby affecting the pressure between the bottom of the inner liner 102 and the hoop body 101, and indirectly affecting the pressure between the bottom of the inner liner 102 and the column 2. The locking device 3 is used to limit the downward axial displacement of the inner liner 102 according to the following principle: when the steel hoop slides down or has a tendency to slide down, the column 2 exerts an upward friction force (preventing its movement) on the turntable 301 at the opening groove of the locking box 304, and the turntable 301 rotates in a clockwise direction or has a tendency to rotate. Since the radius of the turntable 301 at the abutment with the wedge block 302 increases when rotating upward, the wedge block 302 moves upward under pressure or has a tendency to move upward. The top of the wedge block 302 squeezes the gap between the bottom of the inner liner 102 and the inner wall of the hoop body 101, thereby pressing the bottom of the inner liner 102 against the outer wall of the column 2, effectively suppressing the downward relative displacement of the steel hoop relative to the column 2. After the steel hoop is installed, it slides down relative to the column 2 and is locked by the locking device 3, thereby improving the stability of the overall structure of the steel hoop.

[0054] In another technical solution, the elastic inner corrugated steel hoop 1 with locking and confining pressure adjustment functions, the locking device 3 also includes a rack 1 305, which is arranged at the overlap of the arc surface of the turntable 301 and the opening groove; and a rack 2 107, which is arranged on the inner side wall of the bottom of the inner liner 102. Specifically, racks are respectively arranged on the arc surface of the turntable 301 and the inner side wall of the bottom of the inner liner 102. In the process of the locking device 3 suppressing the relative displacement between the steel hoop and the column 2, the rack 1 305 and the rack 2 107 are in direct contact with the outer side wall of the column 2, which increases the friction between the steel hoop and the column 2, further improves the locking effect of the locking device 3 on the inner liner 102, and can better suppress the relative displacement between the steel hoop and the column 2. At the same time, the provision of the rack 1 305 can increase the friction between the contact surface of the turntable 301 and the column 2, and increase the sensitivity of the turntable to the relative displacement between the steel hoop and the column.

[0055] In another technical solution, the elastic inner corrugated steel clamp 1 with locking and confining pressure adjustment functions, the confining pressure device 4 is at least one airbag, which is arranged along the circumference of the clamp body 101 and fixed on its inner wall, any airbag is a strip rubber bag arranged along the axial direction of the clamp body 101, and an inflation hole 401 is provided on the top of the airbag. When it is necessary to adjust the pressure between the clamp body 101 and the column 2, gas is filled into the airbag from the upper inflation hole 401, and the pressure of the inflatable confining pressure device 4 and the close contact surface of the column 2 can be adjusted, thereby adjusting the friction between the steel clamp and the surface of the column 2. At the same time, multiple airbags and multiple corrugated plates are staggered. When the airbag is inflated, it can support and squeeze the inner liner 102 from the side, further compress the inner liner, and make the connection between the inner liner and the clamp body stable and reliable.

[0056] In another technical solution, the elastic inner corrugated steel clamp 1 with locking and confining pressure adjustment functions, the multiple confining pressure devices 4 are arranged in pairs, and any two corresponding confining pressure devices 4 are symmetrical along the axis of the clamp body 101. Specifically, the two corresponding confining pressure devices 4 are symmetrical with respect to the axis of the clamp body 101, and when adjusting the pressure between the steel clamp and the column 2, the multiple airbags are inflated simultaneously, and the multiple confining pressure devices 4 are symmetrically arranged in pairs. During the inflation process, the pressure of the column 2 at different positions of the clamp body 101 increases synchronously, so that the stability of the connection between the steel clamp and the column is ensured during the adjustment of the steel clamp.

[0057] In another technical solution, the elastic inner corrugated steel hoop 1 with locking and confining pressure adjustment functions, the inner liner 102, the confining pressure device 4 and the top of the hoop body 101 are located in the same horizontal plane, and the bottom of the locking device 3 and the confining pressure device 4 are located in the same horizontal plane. In the above technical solution, the inner liner 102 and the locking device 3 are as a whole, with the same height as the confining pressure device 4, and try to cover the inner side wall of the entire hoop body 101. In this embodiment, a layer of steps protruding toward the axial direction is provided at the bottom of the hoop body 101, and the thickness of the step is also equal to the wave height of the corrugated inner liner 102. The inner liner 102, the locking device 3 and the confining pressure device 4 cover the entire inner side wall of the hoop body 101 except the step part. Thereby, the control effect of the inner liner, the locking device and the confining pressure device in locking and adjusting the pressure between the steel hoop and the column is improved, and the stability of the overall structure of the steel hoop is ensured.

[0058] In this embodiment, the construction method of the elastic inner corrugated steel clamp 1 with locking and confining pressure adjustment functions is as follows:

[0059] Step 1: Cast-in-place or pre-placed columns 2;

[0060] Step 2: Place two semicircular hoop pieces on both sides of the column 2, align the four hoop ears 105 in pairs, and adjust the position of the bracket for carrying the upper construction structure;

[0061] Step 3: Use high-strength bolts 104 to lock and connect the corresponding hoop ears 105, then inflate the confining pressure device 4 according to the actual construction situation, adjust the final pressure between the hoop body 101 and the column 2, and add a pressure sensor between the hoop body 101 and the column 2 to monitor the adjusted pressure value in real time;

[0062] Step 4: Set up supports, formwork, etc. on the corbels for subsequent construction.

[0063] After the subsequent construction is completed and temporary structures such as formwork and brackets are removed, the gas in the airbag of the confining pressure device 4 should be discharged first, and the preload force in the bolts 104 should be relaxed, and then all the bolts 104 should be removed, and finally the two semicircular hoops should be removed.

[0064] In step 1, the surface of the column 2 should be flat and free of defects such as honeycomb and pockmarks.

[0065] In step 2, two semicircular hoops should be placed on both sides of the column 2 to ensure that the liner 102 fits tightly with the column 2. The two semicircular hoops are not completely closed when they are joined, but a gap of 3-5 cm is reserved as a seam.

[0066] In step three, insert the bolt 104 into the screw hole reserved on the hoop ear 105 and initially tighten it until the steel hoop can just slide along the surface of the column 2. After adjusting the position of the corbel, tighten the bolt 104 to the specified stress level. At this time, it is necessary to do it simultaneously at the hoop ears 105 on both sides to ensure that all the bolts 104 at the hoop ears 105 on both sides are subjected to the same and uniform force; similarly, when adjusting the pressure between the steel hoop and the column 2, it is also necessary to inflate multiple airbags synchronously and monitor the pressure value between the steel hoop and the column 2 in real time.

[0067] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An elastic inner corrugated steel clamp with locking and confining pressure adjustment functions, characterized in that: include: The hoop body comprises two semicircular hoop pieces with inner arc surfaces facing each other, and the two semicircular hoop pieces are detachably connected to form a cylindrical cavity; The inner liner is a corrugated structure continuously arranged along the axial direction of the hoop body, and the inner liner is sleeved on the inner arc surface of the semicircular hoop piece and fixedly connected thereto; A plurality of locking devices are provided at the bottom of the inner liner and are arranged at intervals along the circumference of the hoop body on the inner arc surface of the semicircular hoop piece, any locking device is configured to limit the downward axial displacement of the inner liner, and the locking device comprises: a locking box, which is located below the inner liner and fixed on the inner side wall of the hoop body, the locking box is a hollow structure and the thickness along the radial direction of the hoop body is equal to the wave height of the inner liner, and the lower part of the locking box is provided with an open groove on one side facing the axis of the hoop body; a rotating disk, which is connected to the inner liner by a rotating shaft The rotating disk is vertically arranged inside the locking box and is rotatably connected thereto, the rotating shaft is horizontally arranged along the tangent direction of the hoop body, the rotating disk is a fan-shaped structure with a radius gradually increasing from the top to the bottom, and its arc surface is arranged opposite to one side of the opening groove and its bottom end coincides with the opening groove; a wedge-shaped block is arranged between the locking box and the inner liner and its right-angle waist is in contact with the inner side wall of the hoop body, the top of the wedge-shaped block is clamped between the bottom of the inner liner and the hoop body, and the bottom of the wedge-shaped block penetrates into the locking box and abuts against the top of the rotating disk; A plurality of confining pressure devices are arranged at intervals along the circumference of the hoop body, any one of the confining pressure devices is fixed to the inner side wall of the hoop body along the axial direction of the hoop body, the plurality of confining pressure devices separate the inner liner into a plurality of corrugated plates of the same height, the confining pressure devices and the corrugated plates are continuously and alternately arranged along the circumference of the semicircular hoop piece, the confining pressure devices are configured to adjust the pressure between the hoop body and the column, the confining pressure device is at least one air bag, which is arranged along the circumference of the hoop body and fixed on its inner side wall, any one of the air bags is a strip rubber bag arranged along the axial direction of the hoop body, and an inflation hole is provided on the top of the air bag.

2. The elastic inner corrugated steel clamp with locking and confining pressure adjustment functions as claimed in claim 1, characterized in that: Two ends of any semicircular hoop piece are respectively bent outward to form hoop ears, and the hoop ears of the two semicircular hoop pieces are fixedly connected by bolts.

3. The elastic inner corrugated steel clamp with locking and confining pressure adjustment functions as claimed in claim 2, characterized in that: It also includes a plurality of stiffening ribs which are arranged at intervals along the axial direction of the hoop body on the outside of the hoop ear, and any stiffening rib is fixedly connected to the hoop ear and the outer arc surface of the semicircular hoop piece.

4. The elastic inner corrugated steel clamp with locking and confining pressure adjustment functions as claimed in claim 1, characterized in that: The locking device also includes a first rack, which is arranged at the overlapped position of the arc surface of the turntable and the opening groove; and a second rack, which is arranged on the inner side wall of the bottom of the inner container.

5. The elastic inner corrugated steel clamp with locking and confining pressure adjustment functions as claimed in claim 1, characterized in that: The plurality of confining pressure devices are arranged in pairs, and any two corresponding confining pressure devices are symmetrical along the axial direction of the hoop body.

6. The elastic inner corrugated steel clamp with locking and confining pressure adjustment functions as claimed in claim 1, characterized in that: The inner liner, the confining pressure device and the top end of the hoop body are located in the same horizontal plane, and the locking device and the bottom end of the confining pressure device are located in the same horizontal plane.

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