CN212104538U - Pipe and pipe module - Google Patents

Abstract

The invention relates to a tube for filling concrete to form a tube concrete structure, having two ends and a circumferential wall extending between the two ends, wherein at least one end has an opening for filling concrete, wherein at least one undercut is integrally formed on the circumferential wall, which undercut is configured such that, outside the tube, it can be inserted into a matching connecting piece and can form a form-locking connection with this connecting piece, and inside the tube, in the state of filling concrete, it can be surrounded by concrete, and it can form a form-locking connection with the concrete in addition to forming a material-locking connection. The technical effect of the tubes is that the connection between the tubes can be achieved by a form-locking connection, whereby no extensive welding with expenditure of labor and time is required. The utility model discloses still relate to a tubular product module.

Description

Pipe and pipe module

Technical Field

The utility model relates to a civil engineering and building engineering technical field, more specifically relate to a tubular product and a tubular product module.

Background

The pipe concrete structure is a structure formed by filling concrete in pipes, and the pipes and the concrete can bear the action of external load together. The pipe concrete structure has the advantages of high bearing capacity, good ductility, excellent earthquake resistance, convenient construction and good fire resistance and corrosion resistance. Concrete filled steel tube (CFT) structures have been widely used in the field of civil engineering and construction.

The connection between the steel pipes in the prior art is usually performed by welding the walls of the steel pipes at the construction site, which requires many necessary welding auxiliary facilities such as hoisting machines, welding machines, scaffolds, etc., and requires a lot of labor cost to complete the welding. Furthermore, the materials that can be joined using welding are limited. At present, for other metal materials or polymer composite materials which are not suitable or can not be welded, no suitable connecting mode is provided for reliably connecting pipes made of the metal materials or the polymer composite materials with each other. This creates a limitation on the material development of the pipe itself. In some cases, materials that are not suitable or capable of being welded in connection may also be advantageous as the material of the tube from the point of view of material cost and strength.

Furthermore, the pipes of the prior art can only form a material-locking connection with the concrete therein, but the connection may not be strong enough, so that there is a possibility of separation of the pipes and the concrete, which impairs the load-bearing capacity of the pipe-concrete structure and may cause safety hazards in the event of adverse load conditions or natural disasters.

In addition, when the fireproof and anticorrosive material is sprayed on the outer surface of the steel pipe in the prior art, the material cannot be directly sprayed on the steel pipe, and the sprayed fireproof and anticorrosive material is easy to fall off because the formed material locking connection is not firm enough. In the prior art, the prior steps of spraying the surface agent and making the mesh cloth on the outer surface of the steel pipe are needed, which is time-consuming and high-cost.

SUMMERY OF THE UTILITY MODEL

The present invention is therefore directed to a tube and a tube module with which at least one of the above-mentioned technical problems occurring in the prior art can be solved.

According to an aspect of the present invention, there is provided a pipe for filling concrete to form a pipe concrete structure. The tubing has two ends and a peripheral wall extending between the two ends. At least one of the ends has an opening for filling with concrete. At least one side recess is integrally formed on the peripheral wall. The undercut is designed such that, on the outside of the pipe, it can be inserted into a mating connecting piece and can form a form-locking connection with the latter, and, on the inside of the pipe, in the concrete-filled state, it can be surrounded by concrete and can form a form-locking connection with the concrete in addition to a form-locking connection.

The utility model discloses a technical effect that tubular product brought can lie in: the connection between the tubes can be made without or not entirely by means of a welded connection, but entirely or predominantly by means of a form-locking connection. The soldered connection can, if necessary, be used only as an auxiliary connection in addition to the form-locking connection. The form-locking connection can be applied to virtually any pipe material. The form-locking connection between the tubes can be achieved by means of lateral recesses on the tubes. This eliminates the need for, or reliance on, welding aids, and the need for extensive labor and time costs to perform the extensive welding. The amount of welding can be at least significantly reduced. Secondly, the undercut of the tube can also form a positive-locking connection with the concrete inside the tube, in addition to the cohesive connection, which, together with the cohesive connection, is far stronger than the mere cohesive connection between the two in the prior art, so that the load-bearing capacity of the tube concrete structure is significantly increased.

In some embodiments, the lateral recess may extend longitudinally with reference to the central axis of the tubing, and may extend over a portion or the entire length of the longitudinal extension of the tubing.

In some embodiments, the side recess may extend to at least one of the ends of the tubing and may be open on the at least one end.

In some embodiments, the side recesses may extend to the two ends of the tubing and may be open on the two ends.

In some embodiments, the tube may be a square tube, and the undercut may be provided on at least one of four side walls of the square tube.

In some embodiments, the side recesses may be provided on all four side walls of the square tube, respectively.

In some embodiments, the same number of mutually opposite side recesses may be provided on each pair of opposite side walls of the square tube.

In some embodiments, all of the side pockets may have the same geometry in their cross-sections.

In some embodiments, the undercut can taper at least partially in its cross section in a direction from a free end of the undercut inside the pipe towards a root of the undercut transitioning to the peripheral wall.

In some embodiments, the side recess may have a dovetail-like or T-shaped cross-section.

In some embodiments, the tubing may be made of metal.

In some embodiments, the pipe may be a steel pipe. Furthermore, aluminum materials or high-strength composite materials are also possible as materials for the tubes.

In some embodiments, the undercut can be filled with a covering material sprayed onto the outer surface of the tube, so that the undercut can form a material-locking and form-locking connection with the covering material.

In some embodiments, the covering material may be a fire-resistant and corrosion-resistant material. Further, the covering material may be a finishing material.

In some embodiments, the pipe may be configured for forming a wall or a stud or beam of a building.

In some embodiments, the tube may be a circular tube, on the circumferential wall of which one or more longitudinally extending side recesses may be distributed.

According to another aspect of the present invention, there is provided a method for manufacturing a pipe according to the present invention, the method comprising the steps of:

providing a metal plate;

forming a metal sheet into a tube part having the undercut or a portion of the undercut by a forming process, the tube part having a shape corresponding to the shape of at least a portion of the tube to be manufactured; and is

Welding one, two or more pipe parts into one pipe.

In some embodiments, the step of "providing a metal sheet" may comprise: and flattening the bent sheet metal blank by using a flattening machine.

In some embodiments, the forming process may be a cold rolling forming process or a hot rolling forming process.

In some embodiments, the metal plate may be a steel plate.

In some embodiments, a metal sheet may be formed into a tube half having the undercut or a portion of the undercut by a forming process, and two identical tube halves may be welded into one tube.

According to another aspect of the utility model, a tubular product module is provided, the tubular product module includes according to the utility model discloses a tubular product and at least one connecting piece that is used for connecting tubular product formfitting ground, wherein, every connecting piece can insert simultaneously two each undercut portions of treating the tubular product of connecting, and every connecting piece has two connecting portion, two connecting portions can be respectively with two each undercut portion formfitting connection of treating the tubular product of connecting to connect two tubular products formfitting grounds of treating the connection.

In some embodiments, the two connecting portions of the connecting piece can be formed as two halves which are symmetrical with respect to a middle plane of the connecting piece.

In some embodiments, the length of the connector may correspond to the length of the undercut, or the length of the undercut may be a multiple of the length of the connector.

In some embodiments, the cross-sections of the two connecting portions of the connecting piece may each correspond to the cross-section of the corresponding undercut.

In some embodiments, the tubing may be square tubing, wherein,

the pipe module can be an L-shaped or T-shaped pipe module and consists of at least two square pipes and at least one connecting piece for connecting the at least two square pipes in a shape locking manner; or

The pipe module can be a cross-shaped pipe module which is composed of at least three square pipes and at least two connecting pieces for connecting the at least three square pipes in a shape-locking manner; or

The pipe module can be a square, reversed-square, groined or field-shaped pipe module and is composed of a plurality of square pipes and a plurality of connecting pieces for connecting the square pipes in a shape-locking manner.

In some embodiments, the outer surface of the pipe module can be sprayed with a covering material, so that the free lateral recesses are filled with the covering material and form an interlocking and form-fitting connection with the covering material.

In some embodiments, the pipe module may be configured for forming a wall or a stud or beam of a building.

According to another aspect of the present invention, a method for manufacturing a pipe module according to the present invention is provided, the method comprising the steps of:

providing at least two tubulars and at least one connection;

positioning each two pipes to be connected with respect to each other in such a way as to form at least one pair of side recesses facing and abutting each other; and is

In the at least one pair of lateral recesses, a respective connecting element can be inserted.

In some embodiments, the undercut may extend to at least one of the ends of the tube and may be open at the at least one end, and the connector may be inserted into the undercut from one of the at least one end of the undercut.

In some embodiments, welding may additionally be performed at the connection site between the connected pipes.

In some embodiments, after the step "inserting the respective connecting piece in the at least one pair of side recesses", the outer surface of the pipe module may be sprayed with a covering material, so that the covering material fills the free side recesses and forms a material-locking connection and a form-locking connection with the side recesses.

Advantages of the respective embodiments, as well as various additional embodiments, will become apparent to persons skilled in the art upon reading the following detailed description of the respective embodiments and by referring to the drawings set forth below.

Drawings

The invention will be further described with reference to the following figures and examples, in which:

figures 1a to 1j are perspective and cross-sectional views of different embodiments of the tubing of the present invention,

figures 2a to 2d are cross-sectional views of different embodiments of the L-shaped tubular module of the invention consisting of the tubes of figures 1a to 1j,

figures 3a to 3b are cross-sectional views of different embodiments of T-shaped tubular modules of the invention consisting of the tubes of figures 1a to 1j,

figures 4a to 4b are cross-sectional views of different embodiments of cross-shaped pipe modules of the invention made of the pipe of figures 1a to 1j,

figures 5a to 5d are cross-sectional views of different embodiments of square tube modules of the invention made of the tube of figures 1a to 1j,

figures 6a to 6c are cross-sectional views of different embodiments of the square tube module of the invention consisting of the tube of figures 1a to 1j,

figures 7a to 7c are cross-sectional views of different embodiments of the invention of a gay-shaped pipe module made of the pipe of figures 1a to 1j,

figures 8a to 8c are cross-sectional views of different embodiments of the inventive well-shaped pipe module made of the pipe of figures 1a to 1j,

FIGS. 9 a-9 b are cross-sectional views of different embodiments of a field-shaped pipe module of the present invention comprised of the pipe of FIGS. 1 a-1 j, and

fig. 10 is a cross-sectional view of a connector of the present invention for connecting the pipes of fig. 1a to 1 j.

Detailed Description

Various illustrative embodiments of the invention are described below. In the description, various systems, structures and devices are schematically depicted in the drawings for purposes of explanation only and not all features of an actual system, structure or device, such as a well-known function or structure, are not described in detail to avoid obscuring the present invention in unnecessary detail. It will of course be appreciated that in the development of any such actual implementation, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such implementation decisions, while complex and time consuming, are nevertheless routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

The terms and phrases used herein should be understood and interpreted to have a meaning consistent with the understanding of those terms and phrases by those skilled in the relevant art. No special definition of a term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art, is intended to be implied by consistent usage of the term or phrase herein. To the extent that a term or phrase is intended to have a special meaning, i.e., a meaning other than that understood by skilled artisans, such a special definition will be expressly set forth in the specification in a definitional manner that directly and unequivocally provides the special definition for the term or phrase.

Throughout the following description, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be interpreted in an open, inclusive sense, i.e., as "including but not limited to".

Throughout the description of this specification, references to the description of the terms "an embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "coupled," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Specific embodiments of the inventive tube 1 and the tube module 2 composed thereof are described below with the aid of the accompanying drawings, in which like reference numerals refer to similar or identical elements throughout the drawings and the description thereof. Furthermore, the various features of the drawings discussed below are not necessarily drawn to scale. Dimensions of various features and elements in the drawings may be expanded or reduced to more clearly illustrate the embodiments of the invention. For supplementary aspects of the teaching that can be directly recognized from the figures, reference is made to the relevant prior art. It is to be noted herein that various modifications and changes in form and detail with respect to the embodiments may be made without departing from the general inventive concept.

The pipe 1 of the present invention and the pipe module 2 formed by the same can be applied to the fields of civil engineering and construction engineering, for example, for constructing a wall, a column, a beam, etc. of an engineering facility or a building under the condition of packing concrete. These engineering facilities or buildings may be bridges, tunnels, above-ground buildings, underground buildings, structures, etc., especially high-rise buildings such as residential buildings, commercial office buildings and shopping malls. The utility model discloses a can all connect into required geometry between tubular product 1, between tubular product 1 and the tubular product module 2 and between tubular product module 2 and the tubular product module 2 as required and the formfitting.

Fig. 1a to 1b, 1c to 1d, 1e to 1f, 1g to 1h and 1i to 1j show respectively a perspective view and a cross-sectional view of a first to a fifth embodiment of a tube 1 according to the invention.

A first exemplary embodiment of a tube 1 according to the invention is described first with the aid of fig. 1a to 1 b. Here, fig. 1a shows a perspective view of a first embodiment of the tube 1 of the invention, and fig. 1b shows a cross-sectional view of the first embodiment of the tube 1 of the invention.

In the first embodiment, the tube 1 may have two ends 4, 5, a peripheral wall 6 extending between the two ends 4, 5, and a side recess 7 provided on the peripheral wall 6.

Both ends 4, 5 of the tube 1 may be open so that either of the two ends 4, 5 can be used for filling with concrete.

The open design of both ends 4, 5 facilitates the positioning of the tube 1. For example, in a manufacturing plant or a construction site of the pipe 1 and the pipe module 2, when the pipe 1 or the pipe module 2 needs to be positioned for assembling or further assembling, and in other cases where the pipe 1 needs to be positioned, there is no fear of an erroneous positioning of the pipe 1 due to an operational error. The incorrect positioning, which for example comprises that the positioning is completed and the concrete cannot be filled, so that the tube 1 positioned incorrectly needs to be removed and positioned again and assembled, which is time-consuming and cumbersome.

In some embodiments, the tubing 1 may be provided with only one of the ends 4, 5 being open. The other ends 5, 4 are closed, for example, with caps. In some embodiments, the single end 4, 5 may be only partially open, as long as it is capable of being filled with concrete. It is also possible that the two ends are closed at the bottom side and that openings for filling with concrete are provided laterally.

The peripheral wall 6 of the tube 1 may have a square cross-section (irrespective of the shape change brought about by the side recesses 7 described below on the peripheral wall 6), and may thus comprise four side walls 6. In one example, the cross-sectional dimension of the square may be 150mm by 150mm, but this may of course be varied accordingly according to the actual needs. The cross-sectional configuration of the peripheral wall 6 may be constant over its entire longitudinal extension. But a gradual or abrupt cross-sectional structure can also be considered according to the actual requirements. The wall thickness of the circumferential wall 6 can be designed according to national standards or according to practical requirements.

A side recess 7 may be integrally formed on each side wall 6 of the tube 1. In some embodiments, a single sidewall 6 may be integrally molded with two or more side pockets 7. In some embodiments, the side recesses 7 may be integrally formed on only one, two, or three of the side walls 6.

The undercut 7 may extend parallel to the tube centre axis from one end of the tube 1 to the other end and may be open at both ends 4, 5. This embodiment advantageously makes it possible to insert a part (for example a half) of the connecting element 3 shown in fig. 10 from either end 4, 5 of the tube 1 into the undercut 7 on the outside of the tube and form a positive-locking connection therewith, so that there is no need to worry about the connecting element 3 not being able to be inserted because of incorrect positioning of the tube 1. In some embodiments, the side recesses 7 may extend obliquely to the pipe central axis. In some embodiments, the undercut 7 may extend only to one end 4, 5 of the tube 1 and be open at that end 4, 5, so that the connector 3 can be inserted into the undercut 7 from that end 4, 5. In some embodiments, the undercut 7 may not extend to either end 4, 5 of the tubing 1, but only so long as the connector 3 can be inserted into the undercut 7.

The undercut 7 may have a dovetail-like cross section. The design of the dovetail-shaped cross section advantageously makes it possible for the undercut 7 to form a positive-locking connection with the connecting piece 3, so that the connecting piece 3 cannot move with two degrees of freedom perpendicular to the central axis of the pipe, or for the two degrees of freedom of movement of the connecting piece 3 to be restricted by the dovetail-shaped undercut 7, so that the connecting piece 3 cannot move either perpendicularly to the side wall 6 on which the undercut 7 is located or in the transverse direction of the side wall 6. It can also be advantageously achieved that, in the filled state of the concrete, the undercut 7 can be easily surrounded by the concrete inside the tube, so that the undercut 7 can form both a cohesive and a form-fitting connection with the concrete. Compared to conventional pipe-concrete structures which are only material-locked, the additional form-locking connection makes it possible to achieve a significantly greater degree of connection strength of the pipe 1 to the concrete. Thus, even in the case of a pipe concrete structure subjected to loads far beyond normal levels or to severe environmental conditions with significant expansion and contraction with heat, the form-locking connection together with the material-locking connection ensures a firm engagement of the pipe 1 with the concrete therein, which is very advantageous for the load-bearing capacity of the engineering installation or the building as a whole, for example against disasters such as strong winds, fires, earthquakes, etc.

In some embodiments, the lateral recess 7 may have a T-shaped cross section or other similar cross section, which may have in common that it may be at least partially or completely tapered, i.e. there is a taper 10, in a direction from a free end 8 of the lateral recess 7 inside the tube towards a root 9 of the lateral recess 7 transitioning to the peripheral wall 6. Thus, with respect to the tendency of the pipe 1 and concrete to separate, the concrete at the tapered portion 10 inside the pipe can exert a force against the tendency of separation.

The pipe and the concrete filled in the pipe are only connected by material locking, but the pipe 1 and the concrete are firmly jointed only by material locking, so the prior application considers that a plurality of reinforcing nails are welded on the inner surface of the pipe, and the joint strength of the pipe 1 and the concrete is enhanced by the reinforcing nails extending into the concrete. The introduction of reinforcement nails undoubtedly increases the time, money and labor cost investment. The pipe 1 of the present invention does not need to be provided with a reinforcing nail or the like due to the side concave portion 7. The tapering 10 of the undercut 7 provides a good grip on the concrete surrounding it, so that the effect of reinforcing the connection of the pipe 1 to the concrete is already good and is simpler in construction and more material and cost-effective. The stiffening effect of the undercut itself can be much better than that of a conventional stiffening nail, since the stiffening nail acts only in a point-like manner with the concrete, whereas the undercut 7 can act in a surface-like manner with the concrete.

The same number of mutually opposite side recesses 7 can be provided on each of the two pairs of opposite side walls 6 of the tube 1, and all side recesses 7 can have the same geometry in their cross section. This completely symmetrical arrangement is advantageous because problems with tubes 1 that cannot be connected to one another by the cooperation of the connecting piece 3 and the undercut 7 due to incorrect positioning of the tubes 1 can be avoided. In some embodiments, a different number of undercuts 7 or undercuts 7 not opposite one another or undercuts 7 of different cross-sections can be provided on the opposite side walls 6 of the tube 1, which can be selected according to the particular application.

The utility model discloses an outer surface of single tubular product 1 or the surface of the tubular product module 2 of being made by tubular product 1 (hereinafter collectively called tubular product surface) can be by spraying covering material, for example fire prevention anticorrosive material. The free undercut 7, i.e. not used for connection to the connection piece 3, can also be filled with a covering material on the outside of the tube. The thickness of the covering material can be designed according to national standards or selected according to specific needs. By means of the undercut 7, it is advantageously also possible for the covering material layer of the outer surface of the tube to form a positive-locking connection with the undercut 7 filled therewith, in addition to a positive-locking connection, as a result of which a firm connection of the covering material layer to the outer surface of the tube is achieved. This additional form-locking connection is particularly advantageous because, in the conventional technique, it is necessary to first carry out the preliminary steps of spraying the interface agent and screening the mesh cloth before spraying the material layer on the outer surface of the pipe, and the present invention can dispense with these preliminary steps due to the form-locking connection between the outer surface of the pipe and the covering material layer, i.e. the covering material can be directly sprayed on the outer surface of the pipe. This has simplified tubular product spraying technology greatly, has saved manpower, time and money cost to production efficiency has been improved by a wide margin.

The pipe 1 may be a steel pipe in terms of the material of the pipe 1 itself, and thus may form a steel pipe concrete structure (CFT) with concrete. In some embodiments, the pipe 1 may also be made of other metal or polymer composite materials, such as aluminum alloys lighter than steel, magnesium alloys, glass fiber reinforced plastics (glass fiber reinforced plastics), and the like. The material of the pipe 1 can vary according to the actual application conditions, and the best coordination between the mechanical requirements and the material costs can be achieved by selecting the material of the pipe. Unlike welding between pipes, since the form-locking connection basically does not impose any restrictions on the pipe material, it is possible in principle to freely select the material type for the pipe 1 of the invention.

Fig. 1c to 1d show a second embodiment of the tube 1 according to the invention. Here, fig. 1c shows a perspective view of a second embodiment of the inventive tube 1, and fig. 1d shows a cross-sectional view of a first embodiment of the inventive tube 1. The second embodiment substantially corresponds to the first embodiment, so that the same reference numerals are used for identical or at least functionally identical parts and reference may be made to the above description of the first embodiment.

The second embodiment shown differs from the first embodiment described above in that the peripheral wall 6 of the tubing 1 may have a substantially rectangular cross-section. The cross-sectional dimensions of the rectangle may be, for example, 150mm by 300mm, but this can be varied accordingly, depending on the actual requirements. Two side recesses 7 may be integrally formed on each side wall 6 of one pair of opposing side walls 6.

Fig. 1e to 1f show a third embodiment of the tube 1 according to the invention. Here, fig. 1e shows a perspective view of a third embodiment of the inventive tube 1, and fig. 1f shows a cross-sectional view of a third embodiment of the inventive tube 1. The third embodiment substantially corresponds to the first embodiment, so that the same reference numerals are used for identical or at least functionally identical parts and reference may be made to the above description of the first embodiment.

The third embodiment shown differs from the first embodiment described above in that the peripheral wall 6 of the tubing 1 may have a substantially rectangular cross-section. In one example, the cross-sectional dimension of the rectangle may be, for example, 150mm by 450 mm. Three side recesses 7 may be integrally formed on each side wall 6 of one pair of opposing side walls 6.

Fig. 1g to 1h show a fourth embodiment of the tube 1 according to the invention. Here, fig. 1g shows a perspective view of a fourth embodiment of the inventive tube 1, and fig. 1h shows a cross-sectional view of a fourth embodiment of the inventive tube 1. The fourth embodiment substantially corresponds to the first embodiment, so that the same reference numerals are used for identical or at least functionally identical parts and reference may be made to the above description of the first embodiment.

The fourth embodiment shown differs from the first embodiment described above in that the peripheral wall 6 of the tubing 1 may have a generally rectangular cross-section. In one example, the cross-sectional dimension of the rectangle may be, for example, 150mm by 600 mm. Four side recesses 7 may be integrally formed on each side wall 6 of one pair of opposed side walls 6.

Fig. 1i to 1j show a fifth embodiment of the tube 1 according to the invention. Here, fig. 1i shows a perspective view of a fifth embodiment of the tube 1 of the invention, and fig. 1j shows a cross section of a fifth embodiment of the tube 1 of the invention. The fifth embodiment substantially corresponds to the first embodiment, so that the same reference numerals are used for identical or at least functionally identical parts and reference may be made to the above description of the first embodiment.

The fifth embodiment shown differs from the first embodiment described above in that the peripheral wall 6 of the tubing 1 may have a substantially rectangular cross-section. In one example, the cross-sectional dimension of the rectangle may be, for example, 150mm by 750 mm. Five side recesses 7 may be integrally formed on each side wall 6 of one pair of opposed side walls 6.

The five specific embodiments of the pipe 1 of the present invention have been described above, but the pipe 1 of the present invention may not be limited to the above five embodiments. For example, the shape of the pipe 1 can be changed, and a circular pipe, a special-shaped pipe, and the like are all possible according to actual needs. The dimensions of the tube 1, including the shape and dimensions of the length and cross-section, can also be varied according to the actual requirements. The number, extent and direction, cross-sectional shape, arrangement, etc. of the lateral recesses 7 on the tube circumferential wall 6 can be varied, as long as the lateral recesses 7 at least partially enable a positive-locking connection with the connecting piece 3 outside the tube and with the concrete inside the tube. In addition, the wall thickness of the pipe peripheral wall 6 and the grade of concrete therein can be selected according to actual needs, for example, the pipe concrete structure with large load bearing can have larger pipe wall thickness and higher concrete grade compared with the pipe concrete structure with small load bearing. In the construction of high-rise buildings, the pipe 1 having a large wall thickness and the concrete of high strength grade may be suitable for use at the lower floors of the building, while the pipe 1 having a relatively small wall thickness and the concrete of lower strength grade may be suitable for use at the upper floors of the building. The wall thickness and concrete strength rating may decrease as the floor height increases.

The utility model discloses a tubular product 1 can be made by sheet metal, and to this, tubular product 1's manufacturing method step can include: the metal sheet is first formed by a forming process into a tube part corresponding to the tube 1 or tube part and at the same time the undercut 7 or a part thereof is formed on the tube part, after which at least one tube part is welded into a tube.

If one formed tube part corresponds to one entire tube 1, then only the two free edges of this one tube part need be welded together to form the circumferentially closed tube 1. If the tube part corresponds to one of the two parts of a tube 1, the two parts need to be welded together to form a surrounding closed tube 1. It is also conceivable that the two parts are respectively two identical halves of a tube 1, so that only one tube part needs to be formed, which facilitates manufacture. Of course, it is also possible that more than two tube parts can be welded to form one tube 1.

When the sheet metal blank, for example a sheet steel blank, is shipped, it is usually coiled or bent, so that the blank can be flattened by a flattening machine before being formed. However, if the starting material itself is already a flat blank of sheet material, the flattening step can be dispensed with.

The forming process may be a cold rolling forming process or a hot rolling forming process, etc.

The welding may be performed by laser welding or bubble welding.

The following summaries the various possible advantages of the pipe 1 of the invention and of the pipe concrete structures manufactured with it, without being limited to them. In addition, each technical scheme of the utility model can only have some of the advantages; for any of these advantages, the various aspects of the present invention may have the advantage entirely or only to some extent.

First, compare in known reinforced concrete structure, the utility model discloses a tubular product concrete structure transportation is simpler with the installation, only needs to transport tubular product 1 or tubular product module 2 to the job site, assembles again if necessary to can pour the concrete into tubular product 1 or tubular product module 2 easily can, convenient save time. Because the properly selected tubular concrete structural material has enough strength, no reinforcing steel bar needs to be arranged in the concrete, and the labor cost, the time cost and the money cost can be saved.

Second, in existing steel pipes of the undercut-free design, the connection between the steel pipes is achieved at the construction site by welding together the adjacent pipe side walls, which, as mentioned in the background section, entails several disadvantages. The connection between the pipes 1 of the present invention is not or not mainly welded, but performed by the form-locking connection between the pipes 1. The form-locking connection can be applied to almost any pipe material, which greatly increases the range of choices for pipe materials. The welded connection can be used as an auxiliary connection measure in addition to the form-locking connection when necessary. The positive connection between the pipes 1 can be achieved by the undercut 7 described in detail above on the pipe 1, so that no extensive welding aids are required or relied upon at the construction site, and no extensive welding is required at great labor and time costs.

Thirdly, the lateral concave part 7 on the pipe 1 of the present invention can form a shape-locking connection with the concrete inside the pipe except for the material-locking connection, and the firmness of the shape-locking connection is far higher than that of the material-locking connection only between the two in the prior art, so that the two can still be firmly connected when disasters such as serious overload, strong wind, earthquake, fire and the like occur, and the possibility of damage to engineering facilities or buildings is reduced.

The undercut 7, which is fourth, free or not used for connecting further pipes 1, can form a positive-locking connection with a covering material layer of the outer surface of the pipe, for example a fireproof and corrosion-resistant material layer, in addition to a positive-locking connection, as a result of which a secure connection of the covering material layer to the outer surface of the pipe can advantageously be achieved. Therefore, the covering material can be directly sprayed on the outer surface of the pipe, and the steps of spraying the interface agent on the surface and forming the mesh cloth are not needed to be carried out firstly as in the prior art. This has simplified the tubular product spraying step greatly, reduces artifical and material cost to the material spraying efficiency has been improved by a wide margin.

Fifth, be the utility model discloses a under the condition of 1 complete symmetrical design of tubular product, can avoid can not loading or tubular product 1 can not connect the scheduling problem because of the concrete that 1 positioning error of tubular product leads to. These symmetrical designs may include: symmetrical design of the two ends 4, 5 of the tube 1, symmetrical design of the tube peripheral wall 6 and the undercut 7 thereon, etc.

The utility model discloses a tubular product 1 can be connected into specific shape's tubular product module 2 at mill or job site as required. After the pipe 1 is manufactured in a factory, the pipe 1 can be assembled to the pipe module 2 in the factory as required, and then the pipe module 2 and the pipe module 2 or the pipe module 2 and a single pipe 1 are transported to a construction site for final assembly. At least preliminary assembly at the factory is advantageous in that the factory may advantageously enable automated assembly or facilitate manual assembly as compared to assembly at the job site. Furthermore, the tube 1 produced in the factory or the assembled tube module 2 can be sold separately.

Some specific embodiments of the pipe module 2 of the present invention are described in detail below. For this purpose, fig. 2a to 2d, 3a to 3b, 4a to 4b, 5a to 5d, 6a to 6c, 7a to 7c, 8a to 8c, 9a to 9b show embodiments of different shapes of tube modules 2 connected by the tube 1 in fig. 1a to 1j via the connecting piece 3 shown in fig. 10, respectively, and are described in detail below.

Fig. 2a to 2d show cross-sectional views of four different embodiments of L-shaped pipe modules 2 consisting of the pipe 1 of the invention. The four L-shaped tube modules 2 are formed by positively connecting two of the tubes 1 of the above five embodiments by connecting pieces 3.

For the method of assembling or manufacturing the tube module 2 of fig. 2a, first, a tube 1 of a first embodiment, a tube 1 of a second embodiment and a coupling 3 shown in fig. 10 are provided, respectively; then, the two tubes 1 are positioned such that one undercut 7 of the tube 1 of the first embodiment and one undercut 7 of one long side of the tube 1 of the second embodiment are opposite to each other and abut, such that the two undercuts 7 form a cross-sectional configuration corresponding to the cross-sectional configuration of the connection 3; subsequently, a connecting piece 3 is inserted simultaneously into the two lateral recesses 7 from one end of the two lateral recesses 7, so that the two tubes 1 are connected by the connecting piece 3 in a form-locking manner.

In the present invention, the terms "opposite" and "abutting" do not require exact opposition or exact abutting, but allow manufacturing or assembly tolerances, but only if the insertion of the connecting elements into the respective undercuts to form a positive-locking connection is possible.

Since both lateral recesses 7 have a dovetail-shaped cross section, a positive-locking connection of two pipes 1 to the same connecting element 3 can be achieved in each case, so that an indirect positive-locking connection of two pipes 1 is achieved. This form-locking connection ensures that the two pipes 1 cannot move relative to each other in two degrees of freedom perpendicular to the pipe centre axis, or that the two degrees of freedom of movement of the two pipes 1 perpendicular to the pipe centre axis are constrained by the connecting piece 3.

After the L-shaped pipe module 2 is formed by inserting the connecting piece 3 into the undercut 7, at least part of the outer surface of the pipe module 2, which is no longer used for connection or further processing, may be sprayed with a covering material, such as a fire-resistant and corrosion-resistant material. The free undercut 7, which is not used for connection to the connection element 3 at all times, can also be filled with a covering material on the outside of the tube. With regard to the description of the covering material, reference is made to the above description of the tube 1.

Similarly, the L-shaped tubing module 2 shown in fig. 2b is composed of a second embodiment of tubing 1, a third embodiment of tubing 1 and a connector 3; fig. 2c shows an L-shaped tube module 2 consisting of a third embodiment of the tube 1, a fourth embodiment of the tube 1 and a connecting piece 3; fig. 2d shows an L-shaped tube module 2 consisting of a tube 1 according to a fourth exemplary embodiment, a tube 1 according to a fifth exemplary embodiment and a connecting element 3. The manufacturing method of these L-shaped pipe modules 2 may be substantially the same.

The four L-shaped tubular modules 2 shown in fig. 2a to 2d are only exemplary. Other combinations of tubing may be used to form the L-shaped tubing module 2. Furthermore, it is also possible to construct the L-shaped pipe modules 2 from three or more pipes 1 and corresponding connecting pieces 3, as long as they form an L-shape.

In some embodiments, these L-shaped pipe modules 2 may be used as a fence at the four corners of a building floor.

By correspondingly positioning two or more tubes 1 in a T-shape, they can be connected to a T-shaped tube module 2 as shown in fig. 3a and 3b by means of a connecting piece 3. For the method of assembling or manufacturing the T-shaped tubular module 2 of fig. 3a, first, a second embodiment of the tubular 1, a third embodiment of the tubular 1 and a connecting piece 3 shown in fig. 10 are provided, respectively; then, the two tubes 1 are positioned so that the lateral recess 7 on one short side of the tube 1 of the second embodiment and the central lateral recess 7 on one long side of the tube 1 of the third embodiment are opposite to each other and abut, so that the two lateral recesses 7 form a cross-sectional configuration corresponding to the cross-sectional configuration of the joint 3; subsequently, a connecting piece 3 is inserted simultaneously into the two lateral recesses 7 from one end of the two lateral recesses 7, so that the two tubes 1 are connected by the connecting piece 3 in a form-locking manner. The T-shaped tubing module 2 of fig. 3b can be assembled or manufactured in the same way, except that the type of tubing 1 required is different.

In some embodiments, the tubes 1 forming the transverse sides of the "T" of the T-shaped tubular module 2 may be used to form an enclosure of a building floor, while the tubes 1 forming the vertical sides of the "T" may be used to form a partition inside the building floor.

By correspondingly positioning three or more tubes 1 in a cross, they can be connected to a cross-shaped tube module 2 as shown in fig. 4a and 4b by means of connecting elements 3. For the assembly or manufacturing method of the cross-shaped tube module 2 of fig. 4a, first, two tubes 1 of the first embodiment, one tube 1 of the third embodiment and two connectors 3 shown in fig. 10 are provided, respectively; then, the two tubes 1 of the first embodiment are symmetrically positioned to the two long sides of the tube 1 of the third embodiment, respectively, so that the middle side concave portion 7 on the two long sides of the tube 1 of the third embodiment and the side concave portion 7 of the tube 1 of the first embodiment are respectively opposite to and abut against each other, thereby forming two pairs of side concave portions 7 corresponding to the cross-sectional structure of the connecting piece 3; then, two connecting pieces 3 are inserted into the two pairs of side recesses 7 from one end of the two pairs of side recesses 7 at the same time, so that the three tubes 1 form a form-fit connection by the two connecting pieces 3. The T-shaped tubing module 2 of fig. 4b can be assembled or manufactured in the same way, except that the type of tubing 1 required is different.

In some embodiments, the cross-shaped tubing module 2 may be used to form a partition inside a building floor.

By positioning two or more tubes 1 parallel to each other in a square, they can be connected to a square tube module 2 as shown in fig. 5a and 5d by means of a connecting piece 3, in a manner similar to the assembly or manufacturing method described above, which will not be described in detail here. The square may be a square or a rectangle.

In some embodiments, the square tubing modules 2 may be used to form thicker studs or beams or thicker walls of a building floor.

By positioning four or more corresponding tubes 1 in a square, they can be connected to a square tube module 2 as shown in fig. 6a and 6c by means of connecting pieces 3, in a manner similar to the assembly or manufacturing method described above and will not be described further here.

In some embodiments, the pipe square module 2 may be used to form an enclosure for a building floor.

By positioning five or more corresponding tubes 1 in a zig-zag pattern, they can be connected to a zig-zag tube module 2 shown in fig. 7a and 7c by means of connecting elements 3, in a manner similar to the assembly or manufacturing method described above and will not be described further here.

In some embodiments, the zig-zag tube module 2 may be used to form enclosures and partitions of building floors.

By positioning a corresponding number of corresponding tubes 1 in a groined shape, they can be connected to the groined tube modules 2 shown in fig. 8a and 8c by means of connecting pieces 3 in a manner similar to the assembly or manufacturing method described above and will not be described in detail here.

In some embodiments, the groin-shaped pipe modules 2 may be used to form partitions of building floors.

By positioning a corresponding number of corresponding tubes 1 in a matrix, they can be connected to matrix-shaped tube modules 2 shown in fig. 9a and 9b by means of connecting elements 3, in a manner similar to the assembly or manufacturing method described above and will not be described further here.

In some embodiments, the chevrons module 2 may be used to form enclosures and partitions of building floors.

The above-mentioned shape of the pipe module 2 is merely exemplary, and other shapes of the pipe module 2 can also be manufactured by the corresponding pipe 1 and the connecting member 3 of the present invention, if necessary.

In some embodiments, the two pipes 1 to be connected may also be positioned such that two or more pairs of opposite and abutting side recesses 7 are formed, and accordingly two or more connecting members 3 are inserted into one of the pairs of side recesses, respectively, to increase the firmness of the connection between the two pipes 1.

Furthermore, it is also possible to additionally perform a welding operation on the periphery of the connection between the two tubes 1 in order to meet additional reinforcement or sealing requirements.

Fig. 10 shows a cross-sectional view of a connection piece 3 for connecting a pipe 1 according to the invention. The connecting piece 3 can have two connecting portions 11, which can be formed as two halves symmetrical about a middle plane of the connecting piece 3.

The cross section of the two connecting portions 11 can correspond to the cross section of each pair of opposite and abutting side recesses 7, so that the connecting element 3 can be brought into a form-fitting connection with the pair of side recesses 7 after insertion, and a secure, form-locking connection of the two tubes 1 can advantageously be achieved.

In the embodiment of the connector shown in fig. 10, the cross-sectional shape of the connector corresponds to the cross-sectional shape of a pair of mating side pockets. However, it is also possible that the two cross-sectional shapes may have a certain deviation. For example, a connector according to another embodiment may have a thinner neck and/or rounded corners than the embodiment shown in fig. 10.

In some embodiments, the length of the connector 3 may correspond to the length of the side recess, so that one connector 3 may be received in exactly one pair of mating side recesses 7.

In some embodiments, the length of the side recess 7 may be multiple times the length of the connector 3, such that multiple connectors 3 may be inserted into a pair of mating side recesses 7 in succession.

The material of the connecting piece 3 can be chosen according to mechanical requirements and mounting convenience etc., and can be different from the material of the tube 1, since the connecting piece 3 and the tube 1 are separate parts.

The invention may comprise any feature or combination of features disclosed herein either implicitly or explicitly or any generalisation thereof and is not to be limited in any way by the scope of the foregoing list. Any of the elements, features and/or structural arrangements described herein may be combined in any suitable manner.

The particular embodiments disclosed above are illustrative only, as the invention may be modified and practiced in different but equivalent manners apparent to those skilled in the art having the benefit of the teachings herein. It is therefore evident that the particular embodiments disclosed above may be altered or modified and all such variations are considered within the scope and spirit of the invention.

Claims (23)

1. A tube for filling with concrete to form a tube concrete structure, having two ends and a circumferential wall extending between the two ends, wherein at least one end has an opening for filling with concrete, characterized in that at least one undercut is integrally formed on the circumferential wall, which undercut is configured such that, on the outside of the tube, it can be inserted into a matching connecting piece and can form a form-locking connection with this connecting piece, and, on the inside of the tube, in the state filled with concrete, it can be surrounded by concrete and can form a form-locking connection with the concrete in addition to a form-locking connection.

2. A tube according to claim 1, wherein the lateral recesses extend longitudinally with reference to the central axis of the tube and extend over a part or the full length of the longitudinal extension of the tube.

3. The tubing of claim 2, wherein the side recess extends to at least one of the ends of the tubing and is open at the at least one end.

4. A tube according to claim 3, wherein the side recesses extend to the two ends of the tube and are open at the two ends.

5. The tubing of any one of claims 1 to 4, wherein the tubing is a square tubing having the undercut provided on at least one of its four side walls.

6. A tube according to claim 5, wherein the undercut is provided on all four side walls of the square tube.

7. A tube according to claim 6, wherein the same number of mutually opposite side recesses are provided in each pair of opposite side walls of the square tube.

8. A tube according to claim 6 or 7, characterized in that all undercuts have the same geometry in their cross-section.

9. Tube according to one of claims 1 to 4, characterized in that the undercut tapers at least partially in its cross section in the direction from the free end of the undercut in the interior of the tube towards the root of the undercut which transitions into the circumferential wall.

10. A pipe according to claim 9, wherein the undercut has a dovetail-like or T-shaped cross-section.

11. A pipe according to any of claims 1 to 4, wherein the pipe is made of metal.

12. A pipe according to any one of claims 1 to 4, wherein said pipe is a steel pipe.

13. A tube according to any one of claims 1 to 4, wherein the undercut can be filled with a coating material sprayed onto the outer surface of the tube, so that the undercut can form an interlocking and positive connection with the coating material.

14. A pipe according to claim 13, wherein the covering material is a fire-resistant and corrosion-resistant material.

15. A pipe according to any one of claims 1 to 4, wherein the pipe is configured for forming a wall or a stud or a beam of a building.

16. Tubing according to one of claims 1 to 4, characterized in that the tubing is a circular tubing, on the circumferential wall of which one or more longitudinally extending side recesses are distributed.

17. Tube module, characterized in that it comprises at least two tubes according to one of claims 1 to 16 and at least one connecting piece for the positive connection of the tubes, wherein each connecting piece can be inserted simultaneously into an undercut of each of the two tubes to be connected, each connecting piece having two connecting parts which can be positively connected to an undercut of each of the two tubes to be connected in order to positively connect the two tubes to be connected.

18. A pipe module according to claim 17, wherein the two connecting parts of the connecting piece are constructed as two halves which are symmetrical with respect to a middle plane of the connecting piece.

19. A pipe module according to claim 17 or 18, characterised in that the length of the connecting piece corresponds to the length of the undercut or that the length of the undercut is a multiple of the length of the connecting piece.

20. A pipe module according to claim 17 or 18, wherein the cross-sections of the two connecting portions of the connecting piece each correspond to the cross-section of the respective undercut.

21. A tube module according to claim 17 or 18, wherein the tube is a square tube, wherein,

the pipe module is an L-shaped or T-shaped pipe module and consists of at least two square pipes and at least one connecting piece for connecting the at least two square pipes in a shape locking manner; or

The pipe module is a cross-shaped pipe module and consists of at least three square pipes and at least two connecting pieces for connecting the at least three square pipes in a shape-locking manner; or

The pipe module is a square, reversed-square, groined or field-shaped pipe module and is composed of a plurality of square pipes and a plurality of connecting pieces for connecting the square pipes in a shape-locking manner.

22. A pipe module according to claim 17 or 18, wherein the outer surface of the pipe module is coated with a covering material, such that the free lateral recesses are filled with the covering material and form a material-locking and form-locking connection with the covering material.

23. A pipe module according to claim 17 or 18, wherein the pipe module is configured for forming a wall or a stud or a beam of a building.

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