Hollow interlayer steel corrugated pipe concrete column

Abstract

The utility model relates to the technical field of civil engineering construction structures, in particular to a hollow interlayer steel corrugated pipe concrete column. The hollow interlayer steel corrugated pipe concrete column comprises a corrugated outer steel pipe, a corrugated inner steel pipe and restraining pieces. The corrugated outer steel pipe and the corrugated inner steel pipe are of an annular structure, and the corrugated inner steel pipe is arranged on the inner side of the corrugated outer steel pipe. The restraining piece is connected between the corrugated outer steel pipe and the corrugated inner steel pipe. According to the hollow interlayer steel corrugated pipe concrete column, the transverse corrugated pipe serves as the outer steel pipe, the longitudinal corrugated pipe serves as the inner steel pipe, the bearing capacity is larger, and the stability is higher; the inner steel pipe and the outer steel pipe are restrained and connected through the restraining piece, it is guaranteed that the corrugated outer steel pipe and the corrugated inner steel pipe form a whole, the interaction force between the interlayer concrete and the inner and outer steel pipes is enhanced, the inner steel pipe delays buckling towards the interior of the pipe, the outer steel pipe delays buckling towards the exterior of the pipe, and the bearing capacity and stability are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering construction structures, in particular to a hollow sandwich steel corrugated pipe concrete column. Background Art

[0002] Hollow sandwich steel tube concrete is a component formed by placing two layers of steel tubes concentrically and pouring concrete between the two layers of steel tubes; it has the characteristics of light weight, high bending stiffness and good disaster resistance. It has been used in structures such as transmission towers and has good application prospects in related high-rise structures such as bridge piers, offshore platform support columns and wind power towers.

[0003] With the development of engineering technology, hollow sandwich steel pipe components are required to meet the needs of large hollow ratio and large diameter-thickness ratio. The hollow ratio of hollow sandwich steel pipe concrete used in some projects (hollow ratio is defined as the ratio of the outer diameter of the inner steel pipe to the inner diameter of the outer steel pipe) can even reach more than 0.95, and the diameter-thickness ratio of the steel pipe is more than 700. In order to achieve a large diameter-thickness ratio, the steel pipe itself needs to have excellent integrity and high bearing capacity. During construction, in order to prevent the overall buckling of the steel pipe, many temporary supports need to be added, and the formwork and demolding will take up a lot of construction time and construction costs; in order to prevent local buckling of the steel pipe, stiffening ribs need to be added, which increases material costs and brings welding residual stress. The above unfavorable factors greatly affect the construction efficiency and greatly increase the construction cost. For thin-walled tube structures, due to the small wall thickness and radial stiffness of the steel pipe, the force performance is easily affected by roundness and local defects, so the processing accuracy and processing technology are required to be high, which is also one of the reasons why it is difficult for steel pipes to achieve a large diameter-thickness ratio. Effectively combining concrete and steel pipes to form a new structural configuration, while achieving a large hollow ratio of components and utilizing steel pipes with a large diameter-to-thickness ratio, ensuring processing accuracy, reducing construction costs, and improving overall stress performance has become an urgent problem to be solved. Utility Model Content

[0004] The utility model provides a hollow sandwich steel corrugated pipe concrete column, which is used to solve the problem in the prior art of how to ensure processing accuracy, reduce construction costs and improve overall force performance while realizing the use of steel pipes with a large hollow ratio and a large diameter-to-thickness ratio of components.

[0005] The utility model provides a hollow sandwich steel corrugated pipe concrete column, comprising:

[0006] A corrugated outer steel pipe, wherein the corrugated outer steel pipe is annular in structure, and a first corrugated structure is formed on the pipe wall of the corrugated outer steel pipe, and the wave extension direction of the first corrugated structure is parallel to the height direction of the corrugated outer steel pipe;

[0007] A corrugated inner steel pipe, wherein the corrugated inner steel pipe is annular in structure, the corrugated inner steel pipe is arranged inside the corrugated outer steel pipe, and a second corrugated structure is formed on the pipe wall of the corrugated inner steel pipe, and the wave extension direction of the second corrugated structure is consistent with the circumferential direction of the corrugated inner steel pipe;

[0008] A restraint member is located between the corrugated outer steel pipe and the corrugated inner steel pipe, and the restraint member is connected between the corrugated outer steel pipe and the corrugated inner steel pipe.

[0009] The hollow sandwich steel corrugated tube concrete column provided by the utility model also includes:

[0010] A first connecting member, the first connecting member being fixed to the inner wall of the corrugated outer steel pipe;

[0011] A second connecting member, the second connecting member being fixed to the outer wall of the corrugated inner steel pipe;

[0012] The restraining member is connected between the first connecting member and the second connecting member.

[0013] According to the hollow sandwich steel corrugated tube concrete column provided by the utility model, the first connecting member, the second connecting member and the restraining member are respectively provided in plurality, and the first connecting member is provided in plurality around the circumferential direction of the corrugated outer steel tube, and the second connecting member is provided in plurality around the circumferential direction of the corrugated inner steel tube.

[0014] According to the hollow sandwich steel corrugated tube concrete column provided by the utility model, the second connecting member includes:

[0015] A mounting seat, wherein a plurality of mounting seats are arranged along the height direction of the corrugated inner steel pipe and are fixed on the outer wall of the corrugated inner steel pipe;

[0016] A pin shaft, the pin shaft is rotatably arranged on the mounting seat;

[0017] An elastic member, one end of which is connected to the mounting seat, and the other end of which is connected to the pin shaft, for providing a restoring force for returning the pin shaft;

[0018] Wherein, through the rotation of the pin shaft, the pin shaft can form an open state to allow the restraining member to pass through, and the pin shaft can form a closed state to limit the restraining member within the limiting space formed by the mounting seat and the pin shaft.

[0019] According to the hollow sandwich steel corrugated tube concrete column provided by the utility model, the pin shaft includes:

[0020] A rotating shaft, the rotating shaft is rotatably disposed on the mounting seat;

[0021] a first limiting column, wherein the first limiting column is connected to the rotating shaft, a gap is formed between the first limiting column and the mounting seat in an open state, and a limiting space is formed between the first limiting column and the mounting seat for limiting the restraining member in a closed state;

[0022] A second limiting column, wherein the second limiting column is connected to the rotating shaft and is used to limit the rotation angle of the rotating shaft.

[0023] According to the hollow sandwich steel corrugated tube concrete column provided by the utility model, the first connecting member includes:

[0024] An angle steel connector is fixed on the inner wall of the corrugated outer steel pipe along the height direction of the corrugated outer steel pipe, and the restraining member is connected to one of the end faces of the angle steel connector.

[0025] According to the hollow sandwich steel corrugated tube concrete column provided by the utility model, the restraining member includes:

[0026] The corrugated steel wire forms an alternating structure of wave crests and wave troughs, the corrugated steel wire is arranged along the height direction of the corrugated outer steel pipe, and the wave structure of the corrugated steel wire is consistent with the first corrugated structure.

[0027] The hollow sandwich steel corrugated tube concrete column provided by the utility model also includes:

[0028] A stiffening ring is arranged on the inner wall of the corrugated inner steel pipe.

[0029] According to the hollow sandwich steel corrugated tube concrete column provided by the utility model, the corrugated outer steel tube and the corrugated inner steel tube are concentrically arranged.

[0030] The hollow sandwich steel corrugated tube concrete column provided by the utility model also includes:

[0031] A concrete layer is poured into the annular space formed between the corrugated outer steel pipe and the corrugated inner steel pipe.

[0032] The utility model provides a hollow sandwich steel corrugated tube concrete column, which includes: a corrugated outer steel tube, a corrugated inner steel tube and a restraining member; the corrugated outer steel tube is annular in structure, and a first corrugated structure is formed on the tube wall of the corrugated outer steel tube, and the wave extension direction of the first corrugated structure is parallel to the height direction of the corrugated outer steel tube; the corrugated inner steel tube is annular in structure, the corrugated inner steel tube is arranged on the inner side of the corrugated outer steel tube, and a second corrugated structure is formed on the tube wall of the corrugated inner steel tube, and the wave extension direction of the second corrugated structure is consistent with the circumference of the corrugated inner steel tube; the restraining member is located between the corrugated outer steel tube and the corrugated inner steel tube, and the restraining member is connected between the corrugated outer steel tube and the corrugated inner steel tube. The utility model provides a hollow sandwich steel corrugated tube concrete column, which has the following beneficial effects:

[0033] 1) The transverse corrugated pipe is used as the outer steel pipe and the longitudinal corrugated pipe is used as the inner steel pipe, which has greater bearing capacity and stronger stability. It can not only be directly used as a formwork to reduce temporary support, reduce the cost and time required for formwork and demoulding; it also enhances the restraint ability, further improves the compressive bearing capacity of concrete, and improves the strength of sandwich concrete;

[0034] 2) The longitudinal corrugated pipe is used as the inner steel pipe, which is convenient for pouring, and can also increase the effective contact area between concrete and steel pipe, and avoid premature buckling of the corrugated steel pipe;

[0035] 3) Compared with ordinary thin-walled steel pipes, corrugated thin-walled steel pipes have greater radial stiffness, and roundness and local defects have little effect on corrugated thin-walled steel pipes. Therefore, corrugated thin-walled steel pipes do not need to add too many stiffening ribs, which greatly reduces the impact of welding residual stress and reduces the requirements for processing accuracy and technology;

[0036] 4) The inner and outer steel pipes are connected by a constraint member to ensure that the corrugated outer steel pipe and the corrugated inner steel pipe form a whole, strengthen the interaction force between the sandwich concrete and the inner and outer steel pipes, and the existence of the constraint member can delay the inner steel pipe from buckling inwardly and the outer steel pipe from buckling outwardly, avoiding the most typical failure mode of the hollow sandwich steel pipe from occurring too early, further increasing the bearing capacity and stability of the hollow sandwich steel corrugated tube concrete column, significantly reducing the construction difficulty of the hollow sandwich steel corrugated tube concrete column, speeding up the construction speed and reducing the cost;

[0037] 5) The corrugated outer steel pipe, corrugated inner steel pipe and restraining parts can be prefabricated in the factory, partially assembled in the factory or fully assembled on site, which solves the problem of the integrity of the double steel pipe processing, assembly and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 It is a structural schematic diagram of a hollow sandwich steel corrugated tube concrete column provided in one embodiment of the utility model;

[0040] Figure 2 yes Figure 1 Schematic diagram of the cross section of AA;

[0041] Figure 3 yes Figure 2 A partial enlarged view of a;

[0042] Figure 4 yes Figure 1 Schematic cross-section of the middle BB;

[0043] Figure 5 yes Figure 4 A partial enlarged view of middle b;

[0044] Figure 6 yes Figure 2 and Figure 4 Schematic cross-section of the CC;

[0045] Figure 7 It is a schematic diagram of the three-dimensional structure of the second connecting member provided in one embodiment of the utility model;

[0046] Figure 8 It is a front view of a second connecting member provided in one embodiment of the present utility model.

[0047] Reference numerals:

[0048] 201: corrugated outer steel pipe; 202: corrugated inner steel pipe; 203: first connecting member; 204: second connecting member; 205: restraining member; 206: stiffening ring; 207: concrete layer; 208: mounting seat; 209: pin shaft; 210: elastic member;

[0049] 2091: rotating shaft; 2092: first limiting column; 2093: second limiting column. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying 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 limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0052] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0053] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the 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, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described 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.

[0055] Combine the following Figure 1-Figure 8 The utility model describes a hollow sandwich steel corrugated tube concrete column, which comprises: a corrugated outer steel tube 201, a corrugated inner steel tube 202, a restraining member 205 and the like.

[0056] like Figure 1 As shown, the corrugated outer steel pipe 201 is annular in structure, and a first corrugated structure is formed on the tube wall of the corrugated outer steel pipe 201, and the waveform extension direction of the first corrugated structure is parallel to the height direction of the corrugated outer steel pipe 201; the corrugated inner steel pipe 202 is annular in structure, the corrugated inner steel pipe 202 is arranged on the inner side of the corrugated outer steel pipe 201, and a second corrugated structure is formed on the tube wall of the corrugated inner steel pipe 202, and the waveform extension direction of the second corrugated structure is consistent with the circumferential direction of the corrugated inner steel pipe 202; the restraint 205 is located between the corrugated outer steel pipe 201 and the corrugated inner steel pipe 202, and the restraint 205 is connected between the corrugated outer steel pipe 201 and the corrugated inner steel pipe 202.

[0057] Specifically, the corrugated inner steel pipe 202 and the corrugated outer steel pipe 201 are nested inside and outside, and concrete is poured between the annular structure formed between the two to form a hollow sandwich steel corrugated pipe concrete column. The steel used in the corrugated outer steel pipe 201 is ordinary steel, high-strength steel or stainless steel; the steel used in the corrugated inner steel pipe 202 is ordinary steel or high-strength steel.

[0058] In addition, in the present embodiment, the corrugated outer steel tube 201 adopts a transverse corrugated tube, that is, the overall structure of the first corrugated structure extends along the circumferential direction (that is, the transverse direction) of the corrugated outer steel tube 201, and the waveform extension direction of the first corrugated structure forming alternating peaks and troughs is along the height direction of the corrugated outer steel tube 201, that is, the first corrugated structure is a waveform structure with peaks and troughs when viewed from the longitudinal section of the corrugated outer steel tube 201; correspondingly, the corrugated inner steel tube 202 adopts a longitudinal corrugated tube, and the waveform extension direction of its second corrugated structure is perpendicular to the waveform extension direction of the first corrugated structure. The corrugated outer steel pipe 201 in this embodiment creatively adopts a transverse corrugated steel pipe. Compared with the use of ordinary steel pipes as outer steel pipes, the transverse corrugated pipe can provide more favorable constraints, enhance the three-dimensional constraint effect on the concrete in the pipe, further improve the compressive bearing capacity of the concrete, improve the strength of the sandwich concrete, and make more effective use of the material; the corrugated inner steel pipe 202 directly transmits the longitudinal load, and the longitudinal corrugated pipe is used as the inner pipe, which is convenient for pouring, and can also increase the effective contact area between the concrete and the steel pipe, and avoid the corrugated steel pipe from buckling prematurely; moreover, the transverse corrugated pipe and the longitudinal corrugated pipe have greater bearing capacity and stronger stability. Not only can they be directly used as templates to reduce temporary support, but also reduce the cost and time required for supporting and removing the template; in addition, the problem of thin-walled steel pipe processing is solved. Compared with ordinary thin-walled steel pipes, the corrugated thin-walled steel pipe has greater radial stiffness, and the roundness and local defects have little effect on the corrugated thin-walled steel pipe. Therefore, the corrugated thin-walled steel pipe does not need to add too many stiffening ribs, which greatly reduces the influence of welding residual stress and reduces the requirements for processing accuracy and technology.

[0059] Furthermore, the inner and outer steel pipes are constrained and connected by a constraint 205 to ensure that the corrugated outer steel pipe 201 and the corrugated inner steel pipe 202 form a whole, strengthen the interaction between the sandwich concrete and the inner and outer steel pipes, and the existence of the constraint 205 can delay the inner steel pipe from buckling inwardly and the outer steel pipe from buckling outwardly, avoiding the most typical failure mode of the hollow sandwich steel pipe from occurring too early, further increasing the bearing capacity and stability of the hollow sandwich steel corrugated tube concrete column, significantly reducing the construction difficulty of the hollow sandwich steel corrugated tube concrete column, speeding up the construction speed and reducing the cost. In addition, the corrugated outer steel pipe 201, the corrugated inner steel pipe 202 and the constraint 205 can all be assembled by factory prefabrication, partial factory assembly or full on-site assembly and processing, solving the problem of the integrity of double steel pipe processing, assembly and transportation.

[0060] Furthermore, the restraint 205 can be made of corrugated steel wire or corrugated steel bar, etc. The corrugated steel wire is used as an example in the following embodiments. The corrugated steel wire in the following embodiments can also be replaced with corrugated steel bar according to actual conditions. The shapes of the corrugated steel wire and the corrugated steel bar are roughly similar, both are corrugated in shape, and are made of steel.

[0061] The utility model provides a hollow sandwich steel corrugated tube concrete column, which includes: a corrugated outer steel tube 201, a corrugated inner steel tube 202 and a restraint 205; the corrugated outer steel tube 201 is an annular structure, and a first corrugated structure is formed on the tube wall of the corrugated outer steel tube 201, and the wave extension direction of the first corrugated structure is parallel to the height direction of the corrugated outer steel tube 201; the corrugated inner steel tube 202 is an annular structure, the corrugated inner steel tube 202 is arranged on the inner side of the corrugated outer steel tube 201, and a second corrugated structure is formed on the tube wall of the corrugated inner steel tube 202, and the wave extension direction of the second corrugated structure is consistent with the circumferential direction of the corrugated inner steel tube 202; the restraint 205 is located between the corrugated outer steel tube 201 and the corrugated inner steel tube 202, and the restraint 205 is connected between the corrugated outer steel tube 201 and the corrugated inner steel tube 202. The utility model provides a hollow sandwich steel corrugated tube concrete column, which has the following beneficial effects:

[0062] 1) The transverse corrugated pipe is used as the outer steel pipe and the longitudinal corrugated pipe is used as the inner steel pipe, which has greater bearing capacity and stronger stability. It can not only be directly used as a formwork to reduce temporary support, reduce the cost and time required for formwork and demoulding; it also enhances the restraint ability, further improves the compressive bearing capacity of concrete, and improves the strength of sandwich concrete;

[0063] 2) The longitudinal corrugated pipe is used as the inner steel pipe, which is convenient for pouring, and can also increase the effective contact area between concrete and steel pipe, and avoid premature buckling of the corrugated steel pipe;

[0064] 3) Compared with ordinary thin-walled steel pipes, corrugated thin-walled steel pipes have greater radial stiffness, and roundness and local defects have little effect on corrugated thin-walled steel pipes. Therefore, corrugated thin-walled steel pipes do not need to add too many stiffening ribs, which greatly reduces the impact of welding residual stress and reduces the requirements for processing accuracy and technology;

[0065] 4) The inner and outer steel pipes are constrained and connected by a constraint member 205 to ensure that the corrugated outer steel pipe 201 and the corrugated inner steel pipe 202 form a whole, strengthen the interaction force between the sandwich concrete and the inner and outer steel pipes, and the existence of the constraint member 205 can delay the inner steel pipe from buckling inwardly and the outer steel pipe from buckling outwardly, thereby avoiding the most typical failure mode of the hollow sandwich steel pipe from occurring too early, further increasing the bearing capacity and stability of the hollow sandwich steel corrugated tube concrete column, significantly reducing the construction difficulty of the hollow sandwich steel corrugated tube concrete column, accelerating the construction speed, and reducing the cost;

[0066] 5) The corrugated outer steel pipe 201, the corrugated inner steel pipe 202 and the restraining member 205 can be assembled by factory prefabrication, partial factory assembly or full on-site assembly and processing, which solves the problem of the integrity of double steel pipe processing, assembly and transportation.

[0067] In one embodiment of the present invention, Figures 1 to 5As shown, the hollow sandwich steel corrugated tube concrete column also includes: a first connector 203 and a second connector 204. The first connector 203 is fixed on the inner wall of the corrugated outer steel tube 201; the second connector 204 is fixed on the outer wall of the corrugated inner steel tube 202. The constraint 205 is connected between the first connector 203 and the second connector 204. In this embodiment, by setting the first connector 203 on the inner wall of the corrugated outer steel tube 201 and setting the second connector 204 on the outer wall of the corrugated inner steel tube 202, an installation position is provided for the constraint 205, which is convenient for the constraint 205 to connect the inner and outer steel tubes to form a whole. Specifically, in the prefabrication stage of the factory, the first connector 203 can be welded and fixed on the inner wall of the corrugated outer steel tube 201, and the second connector 204 can be welded and fixed on the outer wall of the corrugated inner steel tube 202, thereby simplifying the processing design and assembly process.

[0068] In one embodiment of the present invention, the first connecting member 203, the second connecting member 204 and the restraining member 205 are respectively provided in plurality, and the first connecting member 203 is provided in plurality around the circumference of the corrugated outer steel pipe 201, and the second connecting member 204 is provided in plurality around the circumference of the corrugated inner steel pipe 202. Figure 1 , Figure 2 and Figure 4 As shown, a plurality of first connecting members 203 are circumferentially arranged on the outer wall of the corrugated outer steel pipe 201, and a plurality of second connecting members 204 are circumferentially arranged on the inner wall of the corrugated inner steel pipe 202, so that a plurality of restraining members 205 are arranged along the center of the inner ring structure of the inner and outer steel pipes to form a mesh structure, thereby strengthening the integrity of the inner and outer steel pipes.

[0069] In one embodiment of the present invention, Figure 7As shown, the second connecting member 204 adopts a locking connecting member, which specifically includes: a mounting seat 208, a pin 209 and an elastic member 210. Among them, the mounting seats 208 are arranged in plurality along the height direction of the corrugated inner steel tube 202 and are fixed on the outer wall of the corrugated inner steel tube 202; the pin 209 is rotatably arranged on the mounting seat 208; one end of the elastic member 210 is connected to the mounting seat 208, and the other end of the elastic member 210 is connected to the pin 209, which is used to provide a restoring force for the pin 209 to return to its original position. Specifically, through the rotation of the pin 209, the pin 209 can form an open state to allow the constraint 205 to pass through, and the pin 209 can form a closed state to limit the constraint 205 in the limiting space formed by the mounting seat 208 and the pin 209. The locking pin and the elastic member 210 are both mounted on the mounting seat 208. The locking pin can rotate and cooperate with the mounting seat 208 to form an open or closed state. By applying an external force, the locking pin can overcome the elastic force of the elastic member 210 to rotate, thereby placing the constraint 205 into the limited space formed by the mounting seat 208 and the locking pin. When the external force is removed, the locking pin automatically resets due to the restoring force provided by the elastic member 210, so that the constraint 205 passes through the mounting seat 208 and limits its movement, thereby achieving its connection with the corrugated inner steel pipe 202. During the assembly process, a factory-prefabricated locking connector can be used, and the mounting seat 208 can be pre-welded to a designated position on the outer wall of the corrugated inner steel pipe 202 in the form of a fillet weld. This embodiment uses the above locking connector, and the constraint 205 can be quickly installed on the outer wall of the corrugated inner steel pipe 202 by opening and closing the locking pin. Optionally, the elastic member 210 can be a torsion spring. In addition, the starting height of the locking connector is lower than the starting height of the corrugated inner steel pipe 202, so as to avoid collision during transportation and causing the connector to fall off.

[0070] In one embodiment of the present invention, Figure 8As shown, the pin 209 includes: a rotating shaft 2091, a first limiting column 2092 and a second limiting column 2093. The mounting seat 208 is provided with two through holes, and the rotating shaft 2091 is rotatably arranged on the mounting seat 208, and the rotating shaft 2091 is installed in the through holes of the mounting seat 208 to realize its rotational movement. The first limiting column 2092 is connected to the rotating shaft 2091. Through the rotation of the rotating shaft 2091, the first limiting column 2092 can switch between an open state and a closed state. In the open state, a gap is formed between the first limiting column 2092 and the mounting seat 208 for the constraint 205 to pass through. In the closed state, the first limiting column 2092 and the mounting seat 208 form a limiting space for limiting the constraint 205 to limit the constraint 205; the second limiting column 2093 is connected to the rotating shaft 2091. During the rotation of the rotating shaft 2091, in order to avoid excessive outward rotation of the first limiting column 2092, causing the constraint 205 to escape from the limiting space, the second limiting column 2093 is used to limit the rotation angle of the rotating shaft 2091. Specifically, in the open state, the first limiting column 2092 rotates inwardly through the rotating shaft 2091 so that the constraint 205 passes through the gap between the first limiting column 2092 and the mounting seat 208; in the closed state, through the elastic restoring force of the elastic member 210, the first limiting column 2092 rotates outwardly and fits tightly with the mounting seat 208 to form a limiting space, thereby limiting the constraint 205 in the limiting space. In the closed state, the second limiting column 2093 abuts against the mounting seat 208, thereby limiting the rotation angle of the first limiting column 2092 to prevent it from excessive outward rotation.

[0071] In one embodiment of the present utility model, the first connecting member 203 includes: an angle steel connecting member, the angle steel connecting member is fixed on the inner wall of the corrugated outer steel pipe 201 along the height direction of the corrugated outer steel pipe 201, and the restraining member 205 is connected to one end face of the angle steel connecting member. In this embodiment, the first connecting member 203 adopts an angle steel connecting member, and its end is fixed on the specified position of the inner wall of the corrugated outer steel pipe 201 by welding, and the restraining member 205 is connected to one end face of the angle steel connecting member by welding. In this embodiment, the steel strength of the angle steel connecting member matches the steel of the corrugated outer steel pipe 201, and it is pre-welded on the inner wall of the corrugated outer steel pipe 201 in the factory in the form of a single-sided fillet weld; the angle steel connecting member can install the restraining member 205 installed in the longitudinal extension for assembly.

[0072] In one embodiment of the present invention, Figure 6As shown, the restraining member 205 includes: a corrugated steel wire, the corrugated steel wire forms an alternating structure of crests and troughs, the corrugated steel wire is arranged along the height direction of the corrugated outer steel pipe 201, and the waveform structure of the corrugated steel wire is consistent with the first corrugated structure. Specifically, the corrugated steel wire has an alternating structure of crests and troughs similar to a sine wave form, the crest part can be fixed to the first connecting member 203, the trough part can be fixed to the second connecting member 204, and the waveform structure of the corrugated steel wire is consistent with the waveform structure of the first corrugated structure, which can ensure that each crest structure of the corrugated steel wire corresponds to the trough position of the corrugated outer steel pipe 201, thereby further improving the overall structural stability of the inner and outer steel pipes. In addition, a certain length of straight reinforcement is reserved at the trough part of the corrugated steel wire for on-site installation.

[0073] In one embodiment of the utility model, the hollow sandwich steel corrugated tube concrete column further includes: a stiffening ring 206, which is arranged on the inner wall of the corrugated inner steel tube 202. Specifically, the stiffening ring 206 is fixed to the upper end and / or lower end of the inner wall of the corrugated inner steel tube 202 by fillet welding, thereby increasing the end stiffness of the hollow sandwich steel corrugated tube concrete column, and therefore, compared with ordinary steel tubes, it has a higher bearing capacity, matches the corrugated outer steel tube 201, and gives full play to the advantages of the material.

[0074] In one embodiment of the utility model, the corrugated outer steel pipe 201 and the corrugated inner steel pipe 202 are arranged concentrically; the hollow sandwich steel corrugated tube concrete column in this embodiment also includes: a concrete layer 207, and the concrete layer 207 is poured in the annular space formed between the corrugated outer steel pipe 201 and the corrugated inner steel pipe 202. In this embodiment, since the corrugated outer steel pipe 201 and the corrugated inner steel pipe 202 are arranged concentrically, the thickness of the annular space formed between the two is consistent, thereby ensuring the consistency of the thickness of the concrete layer 207, and improving the overall stability of the hollow sandwich steel corrugated tube concrete column. The concrete layer 207 can be made of ordinary concrete or high-strength concrete.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A hollow sandwich steel corrugated tube concrete column, characterized in that: include: A corrugated outer steel pipe (201), wherein the corrugated outer steel pipe (201) is in an annular structure, and a first corrugated structure is formed on the pipe wall of the corrugated outer steel pipe (201), and the wave extension direction of the first corrugated structure is parallel to the height direction of the corrugated outer steel pipe (201); A corrugated inner steel pipe (202), the corrugated inner steel pipe (202) being an annular structure, the corrugated inner steel pipe (202) being arranged on the inner side of the corrugated outer steel pipe (201), and a second corrugated structure being formed on the pipe wall of the corrugated inner steel pipe (202), and the wave extension direction of the second corrugated structure being consistent with the circumferential direction of the corrugated inner steel pipe (202); A restraining member (205), the restraining member (205) is located between the corrugated outer steel pipe (201) and the corrugated inner steel pipe (202), and the restraining member (205) is connected between the corrugated outer steel pipe (201) and the corrugated inner steel pipe (202).

2. The hollow sandwich steel corrugated tube concrete column according to claim 1 is characterized in that: Also includes: A first connecting member (203), wherein the first connecting member (203) is fixed on the inner wall of the corrugated outer steel pipe (201); A second connecting member (204), the second connecting member (204) being fixed on the outer wall of the corrugated inner steel pipe (202); The restraining member (205) is connected between the first connecting member (203) and the second connecting member (204).

3. The hollow sandwich steel corrugated tube concrete column according to claim 2 is characterized in that: The first connecting member (203), the second connecting member (204) and the restraining member (205) are respectively provided in plurality, and the first connecting member (203) is provided in plurality around the circumferential direction of the corrugated outer steel pipe (201), and the second connecting member (204) is provided in plurality around the circumferential direction of the corrugated inner steel pipe (202).

4. The hollow sandwich steel corrugated tube concrete column according to claim 2, characterized in that: The second connecting member (204) comprises: A mounting seat (208), wherein a plurality of mounting seats (208) are arranged along the height direction of the corrugated inner steel pipe (202) and are fixed on the outer wall of the corrugated inner steel pipe (202); A pin shaft (209), the pin shaft (209) being rotatably disposed on the mounting seat (208); an elastic member (210), one end of the elastic member (210) being connected to the mounting seat (208), and the other end of the elastic member (210) being connected to the pin shaft (209), for providing a restoring force for returning the pin shaft (209); Wherein, by rotating the pin shaft (209), the pin shaft (209) can form an open state to allow the restraining member (205) to pass through, and the pin shaft (209) can form a closed state to allow the restraining member (205) to be limited in the limiting space formed by the mounting seat (208) and the pin shaft (209).

5. The hollow sandwich steel corrugated tube concrete column according to claim 4, characterized in that: The pin (209) comprises: A rotating shaft (2091), the rotating shaft (2091) being rotatably disposed on the mounting seat (208); a first limiting column (2092), the first limiting column (2092) being connected to the rotating shaft (2091), the first limiting column (2092) forming a gap with the mounting seat (208) in an open state, and the first limiting column (2092) forming a limiting space with the mounting seat (208) for limiting the restraining member (205) in a closed state; A second limiting column (2093), the second limiting column (2093) is connected to the rotating shaft (2091) and is used to limit the rotation angle of the rotating shaft (2091).

6. The hollow sandwich steel corrugated tube concrete column according to claim 2, characterized in that: The first connecting member (203) comprises: An angle steel connector is fixed on the inner wall of the corrugated outer steel pipe (201) along the height direction of the corrugated outer steel pipe (201), and the restraining member (205) is connected to one end surface of the angle steel connector.

7. The hollow sandwich steel corrugated tube concrete column according to claim 1, characterized in that: The restraining member (205) comprises: A corrugated steel wire, wherein the corrugated steel wire forms an alternating structure of wave crests and wave troughs, the corrugated steel wire is arranged along the height direction of the corrugated outer steel pipe (201), and the wave structure of the corrugated steel wire is consistent with the first corrugated structure.

8. The hollow sandwich steel corrugated tube concrete column according to claim 1, characterized in that: Also includes: A stiffening ring (206), wherein the stiffening ring (206) is arranged on the inner wall of the corrugated inner steel pipe (202).

9. The hollow sandwich steel corrugated tube concrete column according to claim 1, characterized in that: The corrugated outer steel pipe (201) and the corrugated inner steel pipe (202) are arranged concentrically.

10. The hollow sandwich steel corrugated tube concrete column according to any one of claims 1 to 9, characterized in that: Also includes: A concrete layer (207), wherein the concrete layer (207) is poured into the annular space formed between the corrugated outer steel pipe (201) and the corrugated inner steel pipe (202).

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