CN114277937B - Hollow interlayer steel pipe concrete member connecting structure, combined structure and construction method - Google Patents
Hollow interlayer steel pipe concrete member connecting structure, combined structure and construction method Download PDFInfo
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- CN114277937B CN114277937B CN202210117017.XA CN202210117017A CN114277937B CN 114277937 B CN114277937 B CN 114277937B CN 202210117017 A CN202210117017 A CN 202210117017A CN 114277937 B CN114277937 B CN 114277937B
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Abstract
The invention relates to the field of hollow interlayer steel tube concrete connection, and discloses a hollow interlayer steel tube concrete member connection structure, a combined structure comprising the same and a construction method of the combined structure. By adopting the connecting structure to connect two adjacent hollow sandwich steel pipe concrete members, the connecting strength is ensured, the butt joint process of the hollow sandwich steel pipe concrete members is simplified, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the field of hollow interlayer steel pipe concrete connection, in particular to a hollow interlayer steel pipe concrete member connection structure, a combined structure and a construction method.
Background
The hollow sandwich steel pipe concrete member is a novel combined structure developed on the basis of a solid steel pipe concrete member, and because the inner steel pipe is adopted to replace the concrete of the inner core part of the solid steel pipe concrete, the hollow sandwich steel pipe concrete member not only inherits the advantages of the steel pipe concrete, but also has a plurality of novel advantages. Compared with a solid steel pipe concrete member, the hollow sandwich steel pipe concrete member has the advantages of developed cross section, high bending rigidity, good earthquake resistance and good fire resistance due to light hollow weight in the interior, and is widely applied to building structures.
The hollow sandwich steel pipe concrete member has obvious performance advantages, but is influenced by complex factors such as environmental factors, structural design, construction process, limited steel pipe size and the like in engineering application, two independent hollow sandwich steel pipe concrete members are generally required to be connected in a butt joint mode into a whole, the existing connecting mode is mainly welded connection, the welding workload is large, the performance of the steel pipe is adversely affected, the connection strength of a joint under complex mechanical conditions such as axial compression, bending and the like is difficult to ensure, the process is complex, and the construction efficiency is low.
Therefore, on the basis of ensuring the connection strength, the butt joint connection process of the hollow sandwich steel pipe concrete member is simplified, and the improvement of the butt joint connection construction efficiency of the hollow sandwich steel pipe concrete member becomes a problem to be solved urgently by the technicians in the field.
Disclosure of Invention
In order to solve the technical problems, the invention provides a hollow interlayer steel pipe concrete member connecting structure, a combined structure and a construction method, which can simplify the butt joint process of hollow interlayer steel pipe concrete members and improve the construction efficiency on the basis of ensuring the connection strength.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a hollow interlayer steel pipe concrete member connection structure, which comprises: the middle connecting pipe is overlapped with the axes of the two butted hollow interlayer steel pipe concrete members; the hollow sandwich steel pipe concrete member comprises an outer steel pipe and an inner steel pipe which are coaxially arranged, the inner steel pipe is sleeved inside the outer steel pipe, concrete is poured between the inner steel pipe and the outer steel pipe, annular cavities are formed in two opposite ends of the two hollow sandwich steel pipe concrete members, the annular cavities are arranged between the outer steel pipe and the inner steel pipe, the outer diameter of the annular cavities is equal to the inner diameter of the outer steel pipe, and the inner diameter of the annular cavities is equal to the outer diameter of the inner steel pipe; the external diameter of middle connecting pipe equals the internal diameter of outer steel pipe, the internal diameter of middle connecting pipe is greater than the external diameter of interior steel pipe, when being in the butt joint state, the both ends of middle connecting pipe set up respectively in two in the annular cavity, two outer steel pipe both opposite ends offset, two interior steel pipe both opposite ends offset, just middle connecting pipe and two all fill between the interior steel pipe has the grouting material.
Preferably, the hollow sandwich steel pipe concrete member connecting structure further comprises two connecting pieces, and the intermediate connecting pipe is respectively connected with the two outer steel pipes through the two connecting pieces when in the butt joint state.
Preferably, the connecting member is an expansion bolt.
The invention also provides a hollow interlayer steel tube concrete member combined structure, which comprises two hollow interlayer steel tube concrete members and the hollow interlayer steel tube concrete member connecting structure, wherein the axes of the middle connecting tube and the two hollow interlayer steel tube concrete members are overlapped, two ends of the middle connecting tube are respectively arranged in the two annular cavities, two opposite ends of the two outer steel tubes are propped against each other, two opposite ends of the two inner steel tubes are propped against each other, and grouting materials are filled between the middle connecting tube and the two inner steel tubes.
Preferably, the hollow sandwich steel pipe concrete member composite structure further comprises two plugging structures, wherein the two plugging structures are respectively embedded into two opposite ends of the inner steel pipe so as to respectively plug the two opposite ends of the inner steel pipe.
Preferably, the longitudinal section of the plugging structure is a U-shaped structure, two opposite ends of the plugging structure are provided with convex edges, the convex edges are arranged between the two inner steel pipes, and the inner steel pipes are propped against the convex edges of the corresponding plugging structure.
Preferably, the hollow sandwich steel tube concrete member composite structure further comprises two first limiting pieces and two second limiting pieces, wherein the two first limiting pieces are respectively arranged in the two annular cavities, two ends of the middle connecting pipe are respectively propped against the two first limiting pieces, the two second limiting pieces are respectively arranged at two ends of two ends, far away from each other, of the hollow sandwich steel tube concrete member connecting structure, and the second limiting pieces are arranged between the inner steel tube and the outer steel tube.
Preferably, the first limiting member comprises a plurality of first limiting plates uniformly arranged along the circumferential direction of the inner steel pipe, and the second limiting member comprises a plurality of second limiting plates uniformly arranged along the circumferential direction of the inner steel pipe.
Preferably, the hollow sandwich steel pipe concrete member combined structure further comprises a grouting pipe, a grouting pipe and a plugging cap, one of two ends of the two annular cavities, which are far away from each other, is communicated with the grouting pipe, the other end of the annular cavity is communicated with the grouting pipe, the plugging cap is detachably connected with the grouting pipe, and the plugging cap is used for opening or closing the grouting pipe.
The invention also provides a construction method of the hollow sandwich steel pipe concrete member combined structure, which comprises the following steps:
step one, prefabricating two hollow interlayer steel pipe concrete members in a factory; and step two, connecting the two hollow interlayer steel pipe concrete members by adopting the hollow interlayer steel pipe concrete member connecting structure.
Compared with the prior art, the invention has the following technical effects:
the hollow interlayer steel pipe concrete member connecting structure provided by the invention comprises an intermediate connecting pipe, wherein the axis of the intermediate connecting pipe is overlapped with the axis of the two butted hollow interlayer steel pipe concrete members; the hollow sandwich steel pipe concrete member comprises an outer steel pipe and an inner steel pipe which are coaxially arranged, the inner steel pipe is sleeved inside the outer steel pipe, concrete is poured between the inner steel pipe and the outer steel pipe, annular cavities are formed in two opposite ends of the two hollow sandwich steel pipe concrete members, the annular cavities are arranged between the outer steel pipe and the inner steel pipe, the outer diameter of the annular cavities is equal to the inner diameter of the outer steel pipe, and the inner diameter of the annular cavities is equal to the outer diameter of the inner steel pipe; the external diameter of middle connecting pipe equals the internal diameter of outer steel pipe, and the internal diameter of middle connecting pipe is greater than the external diameter of interior steel pipe, and when being in the butt joint state, the both ends of middle connecting pipe set up respectively in two annular cavitys, and two outer steel pipe opposite ends offset, and two interior steel pipe opposite ends offset, and all fill between middle connecting pipe and the two interior steel pipes has the grouting material. Compared with welded connection, the hollow interlayer steel pipe concrete member connecting structure is used for connecting two adjacent hollow interlayer steel pipe concrete members, so that the connecting strength is guaranteed, the butt joint process of the hollow interlayer steel pipe concrete members is simplified, and the construction efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a hollow sandwich steel pipe concrete member connection structure provided in an embodiment of the invention;
FIG. 2 is an isometric view of a hollow sandwich concrete filled steel tube member assembly structure provided in an embodiment of the invention;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of the internal structure of FIG. 2;
FIG. 5 is an assembled top view of a hollow sandwich steel pipe concrete member and an intermediate connecting pipe provided in an embodiment of the invention;
FIG. 6 is a schematic structural diagram of a plugging structure according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a construction method of a hollow sandwich concrete filled steel tube member combined structure provided in an embodiment of the invention.
Reference numerals illustrate: 1. a hollow interlayer steel pipe concrete member connecting structure; 101. an intermediate connecting pipe; 102. a connecting piece; 103. concrete; 104. grouting; 2. a hollow sandwich steel pipe concrete member; 201. an outer steel pipe; 202. an inner steel pipe; 203. an annular cavity; 204. a first limiting member; 205. a second limiting piece; 206. a plugging structure; 207. a convex edge; 208. grouting pipe; 209. a horizontal section; 210. a plugging cap; 211. an arc section.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a hollow interlayer steel pipe concrete member connecting structure, a combined structure and a construction method, which can simplify the butt joint process of hollow interlayer steel pipe concrete members and improve the construction efficiency on the basis of ensuring the connection strength.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 7, the present embodiment provides a hollow sandwich concrete filled steel tube member connection structure 1, comprising: the central connecting pipe 101, the central connecting pipe 101 and the two butted hollow interlayer steel pipe concrete members 2 are overlapped in the axial line; the hollow sandwich steel tube concrete member 2 comprises an outer steel tube 201 and an inner steel tube 202 which are coaxially arranged, the inner steel tube 202 is sleeved inside the outer steel tube 201, concrete 103 is poured between the inner steel tube 202 and the outer steel tube 201, annular cavities 203 are formed in two opposite ends of the two hollow sandwich steel tube concrete members 2, the annular cavities 203 are arranged between the outer steel tube 201 and the inner steel tube 202, the outer diameter of the annular cavities 203 is equal to the inner diameter of the outer steel tube 201, and the inner diameter of the annular cavities 203 is equal to the outer diameter of the inner steel tube 202; the external diameter of the middle connecting pipe 101 is equal to the internal diameter of the outer steel pipe 201, the internal diameter of the middle connecting pipe 101 is larger than the external diameter of the inner steel pipe 202, when the middle connecting pipe 101 is in a butt joint state, two ends of the middle connecting pipe 101 are respectively arranged in the two annular cavities 203, two opposite ends of the two outer steel pipes 201 are propped against each other, two opposite ends of the two inner steel pipes 202 are propped against each other, and grouting material 104 is filled between the middle connecting pipe 101 and the two inner steel pipes 202. Compared with welded connection, the hollow interlayer steel pipe concrete member connecting structure 1 is adopted to connect two adjacent hollow interlayer steel pipe concrete members 2, so that the connecting strength is ensured, the butt joint connection process of the hollow interlayer steel pipe concrete members 2 is simplified, and the construction efficiency is improved.
In this embodiment, as shown in fig. 1 to 3, the hollow sandwich steel pipe concrete member connection structure 1 further includes two connectors 102, and when in a butt joint state, the intermediate connection pipe 101 is respectively connected with two outer steel pipes 201 through the two connectors 102. The number of the connectors 102 in this embodiment is specifically 8, each outer steel pipe 201 is connected with the intermediate connecting pipe 101 through four connectors 102, and the four connectors 102 are uniformly arranged along the circumferential direction of the intermediate connecting pipe 101.
Further, in this embodiment, specifically, the connection member 102 is an expansion bolt. The connection member 102 is not limited to the expansion bolts, and other structures capable of connecting the intermediate connection pipe 101 and the outer steel pipe 201 may be used.
In the present embodiment, as shown in fig. 2, the cross sections of the inner steel pipe 202, the outer steel pipe 201 and the intermediate connection pipe 101 are all circular, but are not limited to circular, and may be other shapes such as square. In addition, in the present embodiment, specifically, the material of the intermediate connection pipe 101 is made of steel material in accordance with the material of the inner steel pipe 202 and the outer steel pipe 201, but similarly, the material of the intermediate connection pipe 101 is not limited to steel material, and other materials capable of achieving connection strength may be selected.
As shown in fig. 2-3, this embodiment further provides a hollow sandwich steel pipe concrete member combination structure, which includes two hollow sandwich steel pipe concrete members 2 and a hollow sandwich steel pipe concrete member connection structure 1, the axis of the middle connecting pipe 101 coincides with that of the two hollow sandwich steel pipe concrete members 2, two ends of the middle connecting pipe 101 are respectively arranged in the two annular cavities 203, two opposite ends of the two outer steel pipes 201 are propped against each other, two opposite ends of the two inner steel pipes 202 are propped against each other, and grouting material 104 is filled between the middle connecting pipe 101 and the two inner steel pipes 202.
In this embodiment, in order to prevent the concrete 103 from entering the inner steel pipes 202, as shown in fig. 3 and 6, the hollow sandwich steel pipe concrete member combination structure further includes two blocking structures 206, and the two blocking structures 206 are respectively embedded into two opposite ends of the two inner steel pipes 202 to respectively block two opposite ends of the two inner steel pipes 202.
Further, in this embodiment, as shown in fig. 6, the longitudinal section of the plugging structure 206 is a U-shaped structure, two opposite ends of the two plugging structures 206 are provided with convex edges 207, the convex edges 207 are disposed between the two inner steel pipes 202, and the inner steel pipes 202 are abutted against the convex edges 207 of the corresponding plugging structures 206. So set up, interior steel pipe 202 shutoff effect is good.
In this embodiment, as shown in fig. 2-4, the hollow sandwich steel pipe concrete member combination structure further includes two first limiting members 204 and two second limiting members 205, the two first limiting members 204 are respectively disposed in the two annular cavities 203, two ends of the intermediate connecting pipe 101 respectively abut against the two first limiting members 204, the two second limiting members 205 are respectively disposed at two end portions of the two hollow sandwich steel pipe concrete member connection structure 1, which are mutually far away, and the second limiting members 205 are disposed between the inner steel pipe 202 and the outer steel pipe 201. In this embodiment, two opposite ends of the two annular cavities 203, which are relatively far away from each other, are respectively provided with a first limiting member 204. The axial position of the intermediate connection pipe 101 in the hollow sandwich steel pipe concrete member 2 can be precisely controlled by providing the first stopper 204.
In this embodiment, as shown in fig. 4, the first limiting member 204 includes a plurality of first limiting plates uniformly arranged along the circumferential direction of the inner steel pipe 202, and the second limiting member 205 includes a plurality of second limiting plates uniformly arranged along the circumferential direction of the inner steel pipe 202. Specifically, the first limiting plate and the second limiting plate are steel plates, and two ends of the first limiting plate and the second limiting plate are respectively connected with the inner steel tube 202 and the outer steel tube 201.
In this embodiment, as shown in fig. 2-3, the hollow sandwich concrete filled steel tube member assembly structure further includes a grouting pipe 208, a grouting pipe, and a plugging cap 210, wherein one of two ends of the two annular cavities 203, which are far away from each other, is communicated with the grouting pipe 208, the other is communicated with the grouting pipe, the plugging cap 210 is detachably connected with the grouting pipe 208, and the plugging cap 210 is used for opening or closing the grouting pipe 208.
Specifically, the annular cavity 203 of the hollow sandwich steel tube concrete member 2 arranged below the two hollow sandwich steel tube concrete members 2 is communicated with the grouting pipe 208, the annular cavity 203 of the hollow sandwich steel tube concrete member 2 arranged above the two hollow sandwich steel tube concrete members is communicated with the grouting pipe, the grouting pipe comprises a horizontal section 209 and an arc section 211, one end of the horizontal section 209 is communicated with the annular cavity 203, the other end of the horizontal section is communicated with one end of the arc section 211, and one end of the arc section 211 away from the horizontal section 209 is higher than the horizontal section 209 in height. Further, the grouting pipe 208 is disposed below the first limiting member 204, the grout outlet pipe is disposed above the first limiting member 204, and the grouting pipe 208 and the grout outlet pipe are circumferentially located at the middle positions of the two first limiting plates. In a specific use process, after grouting is stopped, the liquid level of the grouting material 104 in the grouting pipe is lowered, after the grouting pipe 208 is blocked by the blocking cap 210, the liquid level is stopped to be lowered, as the grouting pipe is arranged above the first limiting piece 204, the liquid level of the final grouting material 104 in the grouting pipe is still higher than the top surface of the first limiting piece 204, grouting plump at the joint of two hollow sandwich steel pipe concrete members 2 is ensured, and the height of the grouting pipe higher than the top surface of the first limiting piece 204 is determined according to specific conditions.
Further, the grouting pipe 208 is screwed with the plugging cap 210, and opposite ends of the horizontal section 209 and the arc-shaped section 211 of the grouting pipe are screwed.
As shown in fig. 7, the construction method of the hollow sandwich steel pipe concrete member combined structure provided in this embodiment includes the following steps:
step one, prefabricating two hollow interlayer steel pipe concrete members 2 in a factory; and step two, connecting two hollow sandwich steel pipe concrete members 2 by adopting a hollow sandwich steel pipe concrete member connecting structure 1.
In the embodiment, in the first step, when prefabricating a hollow sandwich steel pipe concrete member 2 arranged below, firstly placing a plugging structure 206 on top of an inner steel pipe 202, then placing an outer steel pipe 201 on the horizontal ground, placing the inner steel pipe 202 in the outer steel pipe 201, setting a first limiting plate and a second limiting plate between the inner steel pipe 202 and the outer steel pipe 201, then pouring concrete 103 between the inner steel pipe 202 and the outer steel pipe 201, and stopping pouring after grouting of a grouting pipe 208, thus forming the hollow sandwich steel pipe concrete member 2;
when prefabricating the hollow sandwich steel pipe concrete member 2 arranged above, firstly placing the plugging structure 206 at the bottom of the inner steel pipe 202, then inverting the inner steel pipe 202, placing the inverted inner steel pipe 202 inside the inverted outer steel pipe 201, arranging a first limiting plate and a second limiting plate between the inner steel pipe 202 and the outer steel pipe 201, then pouring concrete 103 between the inner steel pipe 202 and the outer steel pipe 201, and stopping pouring after slurry discharge pipe grouting, thus the hollow sandwich steel pipe concrete member 2 can be formed.
In the second step, during connection, the hollow sandwich steel pipe concrete member 2 arranged below is fixed on the horizontal ground, then the intermediate connection pipe 101 is placed in the annular cavity 203 of the hollow sandwich steel pipe concrete member 2 arranged below, the bottom surface of the intermediate connection pipe 101 is propped against the top surface of the first limiting plate, then the outer steel pipe 201 of the hollow sandwich steel pipe concrete member 2 arranged below is connected with the intermediate connection pipe 101 by using expansion bolts, then the hollow sandwich steel pipe concrete member 2 arranged above is sleeved outside the intermediate connection pipe 101, the intermediate connection pipe 101 is nested in the annular cavity 203 of the hollow sandwich steel pipe concrete member 2 arranged above, and then the outer steel pipe 201 of the hollow sandwich steel pipe concrete member 2 arranged above is connected with the intermediate connection pipe 101 by using expansion bolts, so that connection can be completed.
After the connection is completed, the arc section 211 of the grouting pipe is connected with the horizontal section 209, grouting 104 is poured into the two annular cavities 203 through the grouting pipe 208, after the grouting pipe flows out of the grouting liquid, grouting can be completed by screwing a grouting nut on the grouting pipe 208, and after the grouting is completed, the two hollow sandwich steel pipe concrete members 2 are connected through the hollow sandwich steel pipe concrete member connection structure 1 to form a whole, namely a hollow sandwich steel pipe concrete member combination structure.
The hollow sandwich steel pipe concrete member combined structure provided by the invention is prefabricated by adopting a factory, the intermediate connecting pipe 101 is placed in the sandwich space between the inner steel pipe 202 and the outer steel pipe 201 of the two hollow sandwich steel pipe concrete members 2 for assembly on site, and the connecting piece 102 is used for reinforcing and then carrying out local grouting, the grouting connection and the connecting piece 102 are connected and combined to form a plurality of fastening connection defense lines, the joint connection strength is enhanced, the construction process can be simplified, and the construction efficiency is improved.
It should be noted that top, bottom, upper and lower in this embodiment refer to those when arranged as shown in fig. 1.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (9)
1. A hollow sandwich steel pipe concrete member connection structure, characterized by comprising:
the middle connecting pipe is overlapped with the axes of the two butted hollow interlayer steel pipe concrete members;
the hollow sandwich steel pipe concrete member comprises an outer steel pipe and an inner steel pipe which are coaxially arranged, the inner steel pipe is sleeved inside the outer steel pipe, concrete is poured between the inner steel pipe and the outer steel pipe, annular cavities are formed in two opposite ends of the two hollow sandwich steel pipe concrete members, the annular cavities are arranged between the outer steel pipe and the inner steel pipe, the outer diameter of the annular cavities is equal to the inner diameter of the outer steel pipe, and the inner diameter of the annular cavities is equal to the outer diameter of the inner steel pipe;
the outer diameter of the middle connecting pipe is equal to the inner diameter of the outer steel pipe, the inner diameter of the middle connecting pipe is larger than the outer diameter of the inner steel pipe, when the middle connecting pipe is in a butt joint state, two ends of the middle connecting pipe are respectively arranged in the two annular cavities, two opposite ends of the two outer steel pipes are propped against each other, two opposite ends of the two inner steel pipes are propped against each other, and grouting materials are filled between the middle connecting pipe and the two inner steel pipes;
the middle connecting pipe is connected with the two outer steel pipes through the two connecting pieces respectively when the two connecting pieces are in the butt joint state;
the connecting piece passes through the outer steel pipe and the middle connecting pipe, and one end of the connecting piece extends into the middle connecting pipe;
one of two ends of the two annular cavities, which are far away from each other, is communicated with the grouting pipe, and the other end is communicated with the grouting pipe.
2. A hollow sandwich steel pipe concrete member connection structure according to claim 1 wherein said connection member is an expansion bolt.
3. The hollow sandwich steel tube concrete member composite structure is characterized by comprising two hollow sandwich steel tube concrete members, grouting pipes and a hollow sandwich steel tube concrete member connecting structure as claimed in any one of claims 1-2, wherein the axes of the middle connecting pipe and the two hollow sandwich steel tube concrete members coincide, two ends of the middle connecting pipe are respectively arranged in two annular cavities, two opposite ends of the outer steel tube are abutted, two opposite ends of the inner steel tube are abutted, and grouting materials are filled between the middle connecting pipe and the two inner steel tubes.
4. A hollow sandwich steel pipe concrete member combination structure according to claim 3 further comprising two plugging structures embedded in opposite ends of said two inner steel pipes respectively to plug opposite ends of said two inner steel pipes respectively.
5. The hollow sandwich steel pipe concrete member combination structure according to claim 4, wherein the longitudinal section of the plugging structure is a U-shaped structure, two opposite ends of the plugging structure are provided with convex edges, the convex edges are arranged between two inner steel pipes, and the inner steel pipes are propped against the convex edges of the corresponding plugging structure.
6. A hollow sandwich steel tube concrete member combination structure according to claim 3 further comprising two first limiting members and two second limiting members, wherein the two first limiting members are respectively arranged in the two annular cavities, two ends of the intermediate connecting tube respectively abut against the two first limiting members, the two second limiting members are respectively arranged at two end parts of two ends of the hollow sandwich steel tube concrete member connection structure, which are mutually far away, and the second limiting members are arranged between the inner steel tube and the outer steel tube.
7. A hollow sandwich steel tube concrete component composite structure according to claim 6 wherein said first stop member comprises a plurality of first stop plates uniformly disposed along the circumference of said inner steel tube and said second stop member comprises a plurality of second stop plates uniformly disposed along the circumference of said inner steel tube.
8. A hollow sandwich steel pipe concrete member combination structure according to claim 3 further comprising a plugging cap detachably connected to said grouting pipe, said plugging cap being used for opening or closing said grouting pipe.
9. A method of constructing a hollow sandwich steel reinforced concrete member composite structure as claimed in any one of claims 3 to 8 comprising the steps of:
step one, prefabricating two hollow interlayer steel pipe concrete members in a factory;
and step two, connecting the two hollow interlayer steel pipe concrete members by adopting the hollow interlayer steel pipe concrete member connecting structure.
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