CN215330436U - Novel concrete-filled steel tube stiffening mixed structure - Google Patents
Novel concrete-filled steel tube stiffening mixed structure Download PDFInfo
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- CN215330436U CN215330436U CN202120131997.XU CN202120131997U CN215330436U CN 215330436 U CN215330436 U CN 215330436U CN 202120131997 U CN202120131997 U CN 202120131997U CN 215330436 U CN215330436 U CN 215330436U
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Abstract
The utility model provides a novel reinforced concrete-filled steel tube mixed structure, which comprises: the inner steel plate component is an inner tubular structure formed by splicing a plurality of steel plates and forming a stiffening mixed structure; the round steel pipe chords are uniformly arranged on the periphery of the inner steel plate assembly along the extending direction of the tubular structure of the inner steel plate assembly; the section steel web members are connected with two adjacent circular steel tube chords to form a reinforcing structure for the circular steel tube chords; the outer steel plate assembly is laid on the outer sides of the round steel pipe chord member and the section steel web member; concrete is poured inside the circular steel tube chord member and between the inner layer steel plate assembly and the outer layer steel plate assembly. According to the utility model, by reasonably arranging the combination form of the steel pipe concrete structure, the contribution of the steel pipe concrete to the bending rigidity and the bending bearing capacity of the structure is exerted, and the reinforced concrete structure is wrapped outside the steel pipe concrete structure, so that the conventional steel pipe structure is effectively prevented from suffering from environmental corrosion, and the steel pipe concrete structure has the advantages of high bearing capacity, good ductility, excellent anti-seismic performance, good corrosion resistance and the like.
Description
Technical Field
The utility model relates to the technical field of structural engineering, in particular to a novel reinforced concrete-filled steel tube mixed structure.
Background
In the existing structural engineering, the adopted structural forms include a steel structure, a reinforced concrete structure and a steel pipe concrete structure. The steel structure has the serious problem of insufficient stability, the section is often increased in order to meet the stability requirement, and the economic benefit is reduced; the reinforced concrete structure is easy to crack under the working condition of eccentric stress, so that the structure loses the bearing capacity too early; the steel pipe concrete structure can realize the combined action between the steel pipe and the concrete, the characteristics of the two materials are fully exerted, but the steel pipe is positioned in the center of the section, the contribution to bending-resistant rigidity and bending-resistant bearing capacity is small, the steel pipe is exposed in the external environment for a long time, the problem of corrosion of the steel pipe exists, and the steel pipe concrete structure has potential hazards particularly for structures with the design service life of often 100 years.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel reinforced concrete-filled steel tube mixed structure, which is used for solving the serious problem that the steel structure in the prior art has insufficient stability, the existing steel structure often has the defects of increasing the section and reducing the economic benefit in order to meet the stability requirement, the contribution of the steel tube concrete to the bending rigidity and the bending bearing capacity of the structure can be fully exerted by reasonably arranging the structural form of the steel tube concrete, the reinforced concrete structure is externally coated outside the steel tube concrete structure, the conventional steel tube structure is effectively prevented from suffering from the environmental corrosion effect, and the reinforced concrete-filled steel tube mixed structure has the advantages of high bearing capacity, good ductility, excellent anti-seismic performance, good corrosion resistance and the like.
According to a first aspect of the present invention, there is provided a novel reinforced concrete-filled steel tube hybrid structure, comprising: the inner layer steel plate assembly, the circular steel pipe chord member, the profile steel web member and the outer layer steel plate assembly;
the inner steel plate component is an inner tubular structure of a stiffening mixed structure formed by splicing a plurality of steel plates;
the round steel pipe chords are uniformly arranged on the periphery of the inner steel plate assembly along the extending direction of the inner steel plate assembly;
the section steel web members are connected with two adjacent round steel pipe chords to form a reinforcing structure for the round steel pipe chords;
the outer-layer steel plate assembly is an outer-layer tubular structure of a stiffening mixed structure formed by splicing a plurality of steel plates and is laid on the outer sides of the circular steel pipe chord member and the section steel web member;
concrete is poured between the inner layer steel plate assembly and the outer layer steel plate assembly.
According to one embodiment of the utility model, the inner steel plate assembly comprises: an upper chord inner layer steel plate, an abdomen inner layer steel plate and a lower chord inner layer steel plate;
and at least two abdomen inner layer steel plates are respectively connected with the upper chord inner layer steel plate and the lower chord inner layer steel plate to form an inner layer tubular structure of the stiffening mixed structure.
Particularly, this embodiment provides an implementation mode of inlayer steel sheet subassembly, through setting up inlayer steel sheet subassembly into including last quarter inlayer steel sheet, belly inlayer steel sheet and last quarter inlayer steel sheet for inlayer steel sheet subassembly can be dismantled into a plurality of sub-steel sheets in the installation, and process respectively and transport, has promoted the efficiency of work.
It should be noted that, when the upper chord inner layer steel plate, the abdomen inner layer steel plate and the lower chord inner layer steel plate are installed, the inner layer steel plate assembly is spliced at the design position of the bearing member according to the design standard of the bearing member, and in order to save space, the utility model does not make much description on the design position.
It should be further noted that the inner steel plate assembly is arranged to be of a splicing structure formed by the upper chord inner steel plate, the belly inner steel plate and the lower chord inner steel plate, the purpose is to adjust the shape, the length and the like of the inner steel plate assembly according to different design standards of the bearing member, partial splicing can be performed in advance and then transported, the inner steel plate assembly can also be split into separate plates to be transported, and the inner steel plate assembly is spliced after reaching the installation position.
According to one embodiment of the utility model, the outer steel sheet assembly comprises: an upper chord outer layer steel plate, an abdomen outer layer steel plate and a lower chord outer layer steel plate;
at least two outer-layer steel plates of the abdomen part are respectively connected with the upper chord outer-layer steel plate and the lower chord outer-layer steel plate to form an outer-layer tubular structure of a stiffening mixed structure surrounding the circular steel pipe chord member and the section steel web member;
the round steel pipe chord member is a hollow round steel pipe, and the section steel web members are any one of I-shaped steel, H-shaped steel, steel pipes and channel steel.
Particularly, this embodiment provides an embodiment of outer steel sheet subassembly, through setting up outer steel sheet subassembly into including upper chord outer steel sheet, belly outer steel sheet and lower chord outer steel sheet for outer steel sheet subassembly can be dismantled into a plurality of sub-steel sheets in the installation, and process respectively and transport, has promoted the efficiency of work.
It should be noted that, when the upper chord outer layer steel plate, the abdomen outer layer steel plate and the lower chord outer layer steel plate are installed on the outer sides of the circular steel tube chord member and the section steel web member, the connection of the upper chord outer layer steel plate, the abdomen outer layer steel plate and the lower chord outer layer steel plate can be realized through the viscosity of concrete, the connection members embedded in the concrete, welding or connection buckles arranged outside, and the like.
In an application scene, an upper chord outer layer steel plate, a lower chord outer layer steel plate and two belly outer layer steel plates are connected with each other and surrounded to form an outer layer structure surrounding the circular steel pipe chord member and the section steel web member.
In one application scene, an upper chord outer layer steel plate, a lower chord outer layer steel plate and four belly outer layer steel plates are connected with each other and surrounded to form an outer layer structure surrounding the circular steel pipe chord member and the section steel belly member.
According to an embodiment of the present invention, further comprising: and the longitudinal ribs are arranged between the inner layer steel plate assembly and the outer layer steel plate assembly along the extending direction of the inner layer steel plate assembly.
Particularly, this embodiment provides a hybrid structure's embodiment, through inlayer steel sheet subassembly with set up between the outer steel sheet subassembly and indulge the muscle, make inlayer steel sheet subassembly with concrete connection poured between the outer steel sheet subassembly is inseparabler, has also increased hybrid structure's intensity simultaneously.
According to an embodiment of the present invention, further comprising: the stirrups are arranged around the periphery of the single round steel pipe chord member, or the stirrups are arranged around the peripheries of the two adjacent round steel pipe chord members at least.
Particularly, this embodiment provides another kind of mixed structure's embodiment, at the outside winding stirrup of circular steel tube chord member, has increased the area of contact of circular steel tube chord member with the concrete on the one hand, and on the other hand has increased the intensity of circular steel tube chord member, and the winding stirrup also makes the circular steel tube chord member can provide the holding power each other on adjacent circular steel tube chord member simultaneously at least for the circular steel tube chord member forms the bearing structure who connects each other.
According to one embodiment of the utility model, the profiled steel web comprises: a first direction section steel web member and a second direction section steel web member;
the first-direction steel web member is connected with two adjacent circular steel tube chords along the radial direction of the inner steel plate assembly;
the second direction section steel web members are connected with two opposite angles of a rectangular plane formed by the two adjacent first direction section steel web members and the two adjacent round steel pipe chords.
Particularly, this embodiment provides an embodiment of shaped steel web member, through setting up shaped steel web member to including first direction shaped steel web member and second direction shaped steel web member, when carrying out horizontal connection to two adjacent circular steel tube chords, also form between first direction shaped steel web member and second direction shaped steel web member and connect the additional strengthening of fastening, the second direction shaped steel web member that the slant set up has also exerted the effort of slant reinforced connection fastening to the circular steel tube chord member simultaneously.
According to one embodiment of the utility model, the section of the inner steel plate assembly in the radial direction is a square pipe or a round pipe.
Specifically, the present embodiment provides an implementation of an inner steel plate assembly, which satisfies different design criteria requirements of a load-bearing member by providing different shapes for the inner steel plate assembly.
According to one embodiment of the utility model, the ratio of the diameter cross-sectional area of the chord to the cross-sectional area of the concrete cast in the mixing structure is between 0.15 and 0.25.
According to one embodiment of the utility model, the ratio of the cross-sectional area of the cast-in-chord concrete to the cross-sectional area of the cast-in-hybrid structure is between 0.05 and 0.2.
One or more technical solutions in the present invention have at least one of the following technical effects: according to the novel reinforced concrete-filled steel tube composite structure and the construction method thereof, the contribution of the steel tube concrete to the bending rigidity and the bending bearing capacity of the structure can be fully exerted by reasonably arranging the combination form of the steel tube concrete structure, and the reinforced concrete structure is wrapped outside the steel tube concrete structure, so that the inner layer steel plate assembly is effectively prevented from suffering from the environmental corrosion effect, and the reinforced concrete-filled steel tube composite structure has the advantages of high bearing capacity, good ductility, excellent anti-seismic performance, good corrosion resistance and the like.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic view of a circular steel pipe chord member in the new reinforced concrete-filled steel pipe hybrid structure provided by the present invention;
FIG. 2 is one of the schematic layout diagrams of the novel reinforced concrete-filled steel tube composite structure provided by the present invention;
FIG. 3 is a second schematic view showing the layout of the novel reinforced concrete-filled steel tube composite structure provided by the present invention;
FIG. 4 is a third schematic view showing the layout of the novel reinforced concrete-filled steel tube composite structure provided by the present invention;
FIG. 5 is a fourth schematic view showing the layout of the novel reinforced concrete-filled steel tube composite structure provided by the present invention;
FIG. 6 is a fifth schematic view showing the layout of the novel reinforced concrete-filled steel tube composite structure provided by the present invention;
FIG. 7 is a sixth schematic view showing the layout of the novel reinforced concrete-filled steel tube composite structure provided by the present invention;
FIG. 8 is a schematic view showing the installation process of the new reinforced concrete-filled steel tube composite structure in the construction method according to the present invention;
FIG. 9 is a second schematic view of the installation process of the new reinforced concrete-filled steel tube composite structure in the construction method of the present invention;
FIG. 10 is a third schematic view showing the installation process of the new reinforced concrete-filled steel tube composite structure in the construction method of the present invention;
FIG. 11 is a fourth schematic view showing the installation process of the new reinforced concrete-filled steel tube composite structure in the construction method of the present invention;
FIG. 12 is a fifth schematic view showing the installation process of the novel reinforced concrete-filled steel tube composite structure in the construction method of the present invention.
Reference numerals:
10. an inner steel plate assembly; 11. An upper chord inner layer steel plate; 12. An abdominal inner layer steel plate;
13. a lower chord inner layer steel plate; 20. A circular steel pipe chord member; 30. A section steel web member;
31. a first direction web member; 32. A second direction profile web member; 40. An outer steel plate component;
41. an upper chord outer layer steel plate; 42. An outer steel plate of the abdomen; 43. A lower chord outer layer steel plate;
50. concrete; 60. Longitudinal ribs; 70. Hooping;
80. and (5) temporarily supporting.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In some embodiments of the present invention, as shown in fig. 1 to 7, the present invention provides a novel concrete-filled steel tube stiffened hybrid structure, comprising: the inner layer steel plate assembly 10, the circular steel pipe chord member 20, the section steel web member 30 and the outer layer steel plate assembly 40; the inner steel plate component 10 is an inner tubular structure of a stiffening mixed structure formed by splicing a plurality of steel plates; a plurality of circular steel tube chords 20 are uniformly arranged on the periphery of the inner steel plate assembly 10 along the extending direction of the inner steel plate assembly 10; the section steel web members 30 are connected with two adjacent circular steel tube chords 20 to form a reinforcing structure for the circular steel tube chords 20; the outer steel plate assembly 40 is an outer tubular structure of a stiffening mixed structure formed by splicing a plurality of steel plates and is laid outside the circular steel pipe chord member 20 and the section steel web member 30; wherein, concrete 50 is poured inside the circular steel tube chord 20 and between the inner layer steel plate component 10 and the outer layer steel plate component 40.
In some possible embodiments of the utility model, the inner steel plate assembly 10 comprises: an upper chord inner layer steel plate 11, an abdomen inner layer steel plate 12 and a lower chord inner layer steel plate 13; at least two belly inner steel plates 12 are respectively connected with the upper chord inner steel plate 11 and the lower chord inner steel plate 13 to form an inner tubular structure of the stiffening mixed structure.
Particularly, this embodiment provides an implementation mode of inlayer steel sheet subassembly 10, through setting up inlayer steel sheet subassembly 10 to including last quarter inlayer steel sheet 11, belly inlayer steel sheet 12 and last quarter inlayer steel sheet 13 for inlayer steel sheet subassembly 10 can be dismantled into a plurality of sub-steel sheets in the installation, and process and transport respectively, has promoted the efficiency of work.
It should be noted that, when the upper chord inner layer steel plate 11, the abdomen inner layer steel plate 12 and the lower chord inner layer steel plate 13 are installed, the inner layer steel plate assembly 10 is spliced at the design position of the load bearing member according to the design standard of the load bearing member, and in order to save space, the utility model has not been described so much, and in practical application, the connection mode of the upper chord inner layer steel plate 11, the abdomen inner layer steel plate 12 and the lower chord inner layer steel plate 13 can be selected and designed according to the practical requirements and related connection modes in the field.
It should be further noted that the inner steel plate assembly 10 is arranged to be a splicing structure formed by the upper inner steel plate 11, the belly inner steel plate 12 and the lower inner steel plate 13, so that the shape, the length and the like of the inner steel plate assembly 10 can be adjusted according to different design standards of the bearing member, partial splicing and transportation can be performed in advance, and the inner steel plate assembly can be disassembled into separate plates for transportation and splicing after reaching the installation position.
In some possible embodiments of the present invention, outer steel plate assembly 40 includes: an upper chord outer layer steel plate 41, an abdomen outer layer steel plate 42 and a lower chord outer layer steel plate 43; at least two belly outer steel plates 42 are connected to the upper chord outer steel plate 41 and the lower chord outer steel plate 43, respectively, to form an outer tubular structure surrounding the stiffened hybrid structure of the circular steel tube chord 20 and the section steel web 30.
Particularly, this embodiment provides an implementation mode of outer steel sheet subassembly 40, through setting up outer steel sheet subassembly 40 to including outer steel sheet 41 of upper chord, outer steel sheet 42 of belly and outer steel sheet 43 of lower chord for outer steel sheet subassembly 40 can be dismantled into a plurality of sub-steel sheets in the installation, and process respectively and transport, has promoted the efficiency of work.
It should be noted that, when the upper chord outer layer steel plate 41, the abdomen outer layer steel plate 42 and the lower chord outer layer steel plate 43 are installed on the outer sides of the circular steel tube chord 20 and the section steel web member 30, the connection of the upper chord outer layer steel plate 41, the abdomen outer layer steel plate 42 and the lower chord outer layer steel plate 43 can be realized through the viscosity of the concrete 50, the connection members embedded in the concrete 50, welding or connection buckles arranged outside, and the like, and in order to save space, the present invention does not make much description on the connection.
In one application scenario, an upper chord outer steel plate 41, a lower chord outer steel plate 43 and two belly outer steel plates 42 are connected to each other to form an outer structure surrounding the circular steel pipe chord 20 and the section steel web 30.
In one application scenario, an upper chord outer steel plate 41, a lower chord outer steel plate 43 and four belly outer steel plates 42 are connected to each other to enclose the outer structure surrounding the circular steel pipe chord 20 and the section steel belly rod 30.
In some possible embodiments of the present invention, the method further includes: and the longitudinal ribs 60 are arranged between the inner layer steel plate assembly 10 and the outer layer steel plate assembly 40 along the extending direction of the inner layer steel plate assembly 10.
Specifically, the embodiment provides an implementation mode of a hybrid structure, and the longitudinal ribs 60 are arranged between the inner steel plate assembly 10 and the outer steel plate assembly 40, so that the concrete 50 poured between the inner steel plate assembly 10 and the outer steel plate assembly 40 is connected more tightly, and the strength of the hybrid structure is also increased.
In some possible embodiments of the present invention, the method further includes: the stirrups 70, the stirrups 70 are arranged around the periphery of a single circular steel tube chord 20, or the stirrups 70 are arranged around the periphery of at least two adjacent circular steel tube chords 20.
Specifically, the present embodiment provides another embodiment of a hybrid structure, and the stirrup 70 is wound on the outside of the circular steel tube chord 20, so that the contact area between the circular steel tube chord 20 and the concrete 50 is increased, the strength of the circular steel tube chord 20 is increased, and the stirrup 70 is wound on the adjacent circular steel tube chord 20 at least to enable the circular steel tube chord 20 to provide the supporting force each other, so that the circular steel tube chord 20 forms the supporting structure connected with each other.
In some possible embodiments of the utility model, the section bar web 30 comprises: a first direction web member 31 and a second direction web member 32; the first-direction steel web member 31 is connected with two adjacent circular steel tube chords 20 along the radial direction of the inner steel plate assembly 10; the second direction web members 32 are connected to two opposite corners of the rectangular plane formed by the two adjacent first direction web members 31 and the two adjacent circular steel tube chords 20.
Specifically, the present embodiment provides an embodiment of the section steel web member 30, by setting the section steel web member 30 to include the first direction section steel web member 31 and the second direction section steel web member 32, when the two adjacent circular steel tube chords 20 are horizontally connected, a reinforcing structure for connecting and fastening is also formed between the first direction section steel web member 31 and the second direction section steel web member 32, and meanwhile, the second direction section steel web member 32 which is obliquely arranged also applies an acting force for reinforcing the connecting and fastening obliquely to the circular steel tube chords 20.
In some possible embodiments of the present invention, the inner steel plate assembly 10 has a cross section in the radial direction of a square pipe or a circular pipe.
Specifically, the present embodiment provides an embodiment of the inner steel plate assembly 10, which satisfies different design criteria of the load-bearing member by providing different shapes for the inner steel plate assembly 10.
In some embodiments of the present invention, as shown in fig. 1 to 12, the present invention provides a method for constructing a novel reinforced concrete-filled steel tube composite structure, the method comprising:
erecting a circular steel pipe chord member 20 and a section steel web member 30 at the position of a bearing member;
pouring concrete 50 into the circular steel pipe chord members 20 and the section steel web members 30;
erecting an upper chord inner layer steel plate 11, an abdomen inner layer steel plate 12 and a lower chord inner layer steel plate 13 to the inner sides of the circular steel pipe chord members 20 and the section steel web members 30 through temporary supports 80 to form an inner layer steel plate assembly 10;
the longitudinal bars 60 and the stirrups 70 are tied on the round steel pipe chord members 20 and the section steel web members 30;
erecting an upper chord outer layer steel plate 41, an abdomen outer layer steel plate 42 and a lower chord outer layer steel plate 43 to the outer sides of the circular steel tube chord members 20 and the section steel web members 30 through temporary supports 80 to form an outer layer steel plate assembly 40;
and pouring concrete 50 into a space formed by surrounding between the inner layer steel plate assembly 10 and the outer layer steel plate assembly 40 to form the novel steel pipe concrete stiffening and mixing structure.
In detail, the utility model also provides a construction method of the novel concrete-filled steel tube stiffening mixed structure, which is used for solving the serious problem that the steel structure in the prior art has insufficient stability, often increases the cross section to meet the stability requirement and reduces the economic benefit.
It should be noted that the present invention does not describe how much the inner steel plate assembly 10 is spliced at the position of the load-bearing member, and in the actual construction process, the present invention can be implemented by referring to the related construction method of the structural engineering.
It should also be noted that the ratio of the diameter of the circular steel chord 20 to the cross-sectional area of the concrete 50 cast in the hybrid structure is between 0.15 and 0.25, and the ratio of the cross-sectional area of the concrete 50 cast in the circular steel chord 20 to the cross-sectional area of the concrete 50 cast in the hybrid structure is between 0.05 and 0.2.
Furthermore, through the arrangement of the stiffening mixed structure in the construction process, the strengthening of key bearing members is realized, and meanwhile, the combination of the reinforced concrete 50 structure and the steel pipe concrete 50 structure enables the stiffening mixed structure to have the advantages of high bearing capacity, good ductility, excellent anti-seismic performance, good corrosion resistance and the like.
Further, in the construction process, the inner steel plate assembly 10 is spliced at the design position of the bearing member, and the inner steel plate assembly 10 can be arranged in a segmented manner to directly form an arched inner steel plate framework supporting the bearing member.
In some possible embodiments of the utility model, the load bearing member is a rectilinear member or a rib.
Specifically, the present embodiment provides an embodiment of a load-bearing member, which combines a linear member or a rib with a hybrid structure, so that the novel reinforced concrete-filled steel tube hybrid structure has the advantages of high load-bearing capacity, good ductility, excellent earthquake resistance, good corrosion resistance, and the like.
The upper chord outer layer steel plate 41 and the lower chord outer layer steel plate 43 are vertically arranged relative to the load bearing member, wherein the upper chord outer layer steel plate 41 is laid on the upper surface of the design position of the load bearing member, and the lower chord outer layer steel plate 43 is laid on the lower surface of the design position of the load bearing member.
Further, when the load bearing member is designed to be vertically disposed, the upper chord outer layer steel plate 41 and the lower chord outer layer steel plate 43 are disposed oppositely in the vertical direction.
In some embodiments of the present invention, the present disclosure provides a method for constructing a novel reinforced concrete-filled steel tube composite structure, the method comprising:
pouring the upper chord inner layer steel plate 11, the upper chord outer layer steel plate 41, the circular steel pipe chord member 20 and the section steel web member 30 through concrete 50 to form an upper chord module;
pouring the abdomen inner layer steel plate 12, the abdomen outer layer steel plate 42 and the section steel abdomen rod 30 through concrete 50 to form an abdomen module;
pouring the lower chord inner layer steel plate 13, the lower chord outer layer steel plate 43, the circular steel pipe chord member 20 and the section steel web member 30 through concrete 50 to form a lower chord module;
and erecting the upper chord module, the belly module and the lower chord module to the position of a bearing member, and connecting the inner layer steel plate assembly 10 with the outer layer steel plate assembly 40 to form the novel concrete-filled steel tube stiffening mixed structure.
In detail, the utility model also provides a construction method of the novel concrete-filled steel tube stiffening mixed structure, which is used for solving the serious problem that the steel structure in the prior art has insufficient stability, often increases the cross section to meet the stability requirement and reduces the economic benefit.
It should be noted that the present invention does not describe how much the inner steel plate assembly 10 is spliced at the position of the load-bearing member, and in the actual construction process, the present invention can be implemented by referring to the related construction method of the structural engineering.
It should also be noted that the ratio of the diameter of the circular steel chord 20 to the cross-sectional area of the concrete 50 cast in the hybrid structure is between 0.15 and 0.25, and the ratio of the cross-sectional area of the concrete 50 cast in the circular steel chord 20 to the cross-sectional area of the concrete 50 cast in the hybrid structure is between 0.05 and 0.2.
Further, an upper chord module, an abdomen module and a lower chord module are formed by processing an upper chord inner layer steel plate 11 and an upper chord outer layer steel plate 41, an abdomen inner layer steel plate 12 and an abdomen outer layer steel plate 42, a lower chord inner layer steel plate 13 and a lower chord outer layer steel plate 43 in the mixed structure with the section steel web 30 and the concrete 50 respectively, wherein the upper chord module, the abdomen module and the lower chord module are of reinforced concrete 50 structures, so that the novel steel pipe concrete stiffening mixed structure forms modular assembly, and the upper chord module, the abdomen module and the lower chord module which are processed in advance are convenient to transport and adapt to different structural engineering design requirements.
Further, in the construction process, the inner steel plate assembly 10 is spliced at the design position of the bearing member, and the inner steel plate assembly 10 can be arranged in a segmented manner to directly form an arched inner steel plate skeleton supported by a pair of structures.
Furthermore, the stiffening mixed structure is arranged in the construction process, the strengthening of key bearing members is realized, and meanwhile, the combination of the reinforced concrete 50 structure and the steel pipe concrete 50 structure enables the stiffening mixed structure to have the advantages of high bearing capacity, good ductility, excellent anti-seismic performance, good corrosion resistance and the like.
In some possible embodiments of the utility model, the load bearing member is a rectilinear member or a rib.
Specifically, the present embodiment provides an embodiment of a load-bearing member, which combines a linear member or a rib with a hybrid structure, so that the novel reinforced concrete-filled steel tube hybrid structure has the advantages of high load-bearing capacity, good ductility, excellent earthquake resistance, good corrosion resistance, and the like.
The upper chord outer layer steel plate 41 and the lower chord outer layer steel plate 43 are vertically arranged relative to the load bearing member, wherein the upper chord outer layer steel plate 41 is laid on the upper surface of the design position of the load bearing member, and the lower chord outer layer steel plate 43 is laid on the lower surface of the design position of the load bearing member.
Further, when the load bearing member is designed to be vertically disposed, the upper chord outer layer steel plate 41 and the lower chord outer layer steel plate 43 are disposed oppositely in the vertical direction.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the description herein, references to the description of the term "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 an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are merely illustrative of the present invention and are not to be construed as limiting the utility model. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (8)
1. The utility model provides a novel concrete-filled steel tube stiffening mixed structure which characterized in that includes: the inner layer steel plate assembly, the circular steel pipe chord member, the profile steel web member and the outer layer steel plate assembly;
the inner steel plate component is an inner tubular structure of a stiffening mixed structure formed by splicing a plurality of steel plates;
the round steel pipe chords are uniformly arranged on the periphery of the inner steel plate assembly along the extending direction of the tubular structure of the inner steel plate assembly;
the section steel web members are connected with two adjacent round steel pipe chords to form a reinforcing structure for the round steel pipe chords;
the outer-layer steel plate assembly is an outer-layer tubular structure of a stiffening mixed structure formed by splicing a plurality of steel plates and is laid on the outer sides of the circular steel pipe chord member and the section steel web member;
concrete is poured between the inner layer steel plate assembly and the outer layer steel plate assembly.
2. A novel concrete filled steel tube stiffened hybrid structure according to claim 1, wherein said inner steel plate assembly comprises: an upper chord inner layer steel plate, an abdomen inner layer steel plate and a lower chord inner layer steel plate;
and at least two abdomen inner layer steel plates are respectively connected with the upper chord inner layer steel plate and the lower chord inner layer steel plate to form an inner layer tubular structure of the stiffening mixed structure.
3. A novel concrete filled steel tube stiffened hybrid structure according to claim 1, wherein said outer steel plate assembly comprises: an upper chord outer layer steel plate, an abdomen outer layer steel plate and a lower chord outer layer steel plate;
at least two outer-layer steel plates of the abdomen part are respectively connected with the upper chord outer-layer steel plate and the lower chord outer-layer steel plate to form an outer-layer tubular structure of a stiffening mixed structure surrounding the circular steel pipe chord member and the section steel web member;
the round steel pipe chord member adopts a hollow round steel pipe, and the section steel web member adopts any one of I-shaped steel, H-shaped steel, a steel pipe and channel steel.
4. A novel steel pipe concrete stiffened hybrid structure of claim 1, further comprising: and the longitudinal ribs are arranged between the inner layer steel plate assembly and the outer layer steel plate assembly along the extending direction of the inner layer steel plate assembly.
5. A novel steel pipe concrete stiffened hybrid structure of claim 1, further comprising: the stirrups are arranged around the periphery of the single round steel pipe chord member, or the stirrups are arranged around the peripheries of the two adjacent round steel pipe chord members at least.
6. A new steel tube concrete stiffened hybrid structure according to any one of claims 1 to 5, wherein said steel web member comprises: a first direction section steel web member and a second direction section steel web member;
the first-direction steel web member is connected with two adjacent circular steel tube chords along the radial direction of the inner steel plate assembly;
the second direction section steel web members are connected with two opposite angles of a rectangular plane formed by the two adjacent first direction section steel web members and the two adjacent round steel pipe chords.
7. A novel concrete filled steel tube reinforced composite structure according to any one of claims 1 to 4, wherein the ratio of the diametrical cross-sectional area of the chord to the cross-sectional area of the concrete cast within the composite structure is between 0.15 and 0.25.
8. A novel steel tube concrete stiffened hybrid structure of any one of claims 1 to 4, wherein the ratio of the cross-sectional area of the concrete cast in the chord member to the cross-sectional area of the concrete cast in the hybrid structure is between 0.05 and 0.2.
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