CN216475702U - Multi-cavity steel pipe frame corrugated steel plate wall and support mixed structure system - Google Patents
Multi-cavity steel pipe frame corrugated steel plate wall and support mixed structure system Download PDFInfo
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- CN216475702U CN216475702U CN202122457453.5U CN202122457453U CN216475702U CN 216475702 U CN216475702 U CN 216475702U CN 202122457453 U CN202122457453 U CN 202122457453U CN 216475702 U CN216475702 U CN 216475702U
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Abstract
The utility model discloses a multi-cavity steel tube frame corrugated steel plate wall and support mixed structure system which comprises a lateral force resisting component, a multi-cavity steel tube concrete column and a steel beam, wherein the lateral force resisting component is one of a lateral force resisting component A, a lateral force resisting component B and a lateral force resisting component C. The lateral force resisting component A is formed by mixing and arranging a corrugated steel plate concrete combined wall, a transverse corrugated steel plate wall and a steel support. The lateral force resisting component B is formed by mixing and arranging a corrugated steel plate concrete composite wall and a steel support. The lateral force resisting component C is formed by mixing and arranging a transverse corrugated steel plate wall and a steel support. In the anti side force component, steel shotcrete slope fixed connection is between two multi-chamber steel core concrete column, and fixed connection is between two girder steels simultaneously. The utility model realizes the standard requirement, and resistance side components are required to be arranged in both directions, thereby meeting the large space requirement of a structural system.
Description
Technical Field
The utility model belongs to the technical field of building structures, and particularly relates to a multi-cavity steel pipe frame corrugated steel plate wall and support mixed structure system.
Background
Frame-shear wall structures are widely used in residential construction as a lateral force resistant system. The frame-shear wall structure consists of a frame and a shear wall. Compared with the traditional reinforced concrete frame and the traditional shear wall, the steel frame and the steel plate shear wall are convenient to construct, and the bearing and deformation performance of the structure under the action of horizontal reciprocating loads such as earthquake and the like can be improved through reasonable design, so that the structure obtains superior energy dissipation and shock absorption characteristics. In a building structure, a steel frame mainly bears axial force and bending moment, and a steel plate shear wall mainly bears horizontal force. The steel plate shear wall generally keeps elasticity under the action of wind load or small earthquake, plays a monotonous bearing role, can enter plasticity under the action of large earthquake, dissipates earthquake input energy through reciprocating hysteresis, and plays dual roles of bearing a component and dissipating energy and damping.
The prior art 2020.02.21 discloses an invention named as a structural system (application number: 202010107221.4) consisting of a special-shaped section column frame and a corrugated steel plate wall, which can improve the stress performance, normal use function, economic benefit and building impression of a frame-shear wall structure, thereby overcoming the use problem of the frame-shear wall structure in a residential structure.
How to realize the specification requirement is to arrange a resistance side member in both directions, and the technical problem to be solved by the technical personnel in the field is to meet the large space requirement of a structural system.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems in the prior art and provide a multi-cavity steel pipe frame corrugated steel plate wall and support mixed structure system, through the combination of two or more lateral force resistant components of a steel support and a corrugated steel plate combined wall or a transverse corrugated steel plate wall, the problems that the steel plate wall influences the communication requirement between different compartments on the bottom layer and the steel plate wall is difficult to arrange in the X direction of a housing system or an LOFT apartment system are solved, the requirement of standardization on the two-way arrangement of the lateral force resistant components is met, the large space requirement of the structure system is met, the characteristic that the lateral force resistant rigidity of the corrugated steel plate combined wall or the transverse corrugated steel plate wall is superior to that of the support is fully exerted, the reasonable combination is realized, the corrugated steel plate combined wall or the transverse corrugated steel plate wall serves for space application and the requirement of attractive appearance, and the function of building materials can be fully exerted.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a multi-chamber steel pipe frame wave form steel sheet wall and support mixed structure system which characterized in that: the steel-pipe concrete column comprises a lateral force resisting component, a multi-cavity steel-pipe concrete column and a steel beam, wherein the lateral force resisting component is one of a lateral force resisting component A, a lateral force resisting component B and a lateral force resisting component C.
The lateral force resisting component A is formed by mixing and arranging a corrugated steel plate combined wall, a transverse corrugated steel plate wall and a steel support.
The lateral force resisting component B is formed by mixing and arranging a corrugated steel plate combination wall and a steel support.
The lateral force resisting component C is formed by mixing and arranging a transverse corrugated steel plate wall and a steel support.
In the lateral force resisting component, the steel support is obliquely and fixedly connected between the two multi-cavity steel tube concrete columns, and is simultaneously and fixedly connected between the two steel beams, and the steel support can adopt one of a rectangular steel tube, H-shaped steel and a circular tube.
The lateral force resisting component adopts the corrugated steel plate concrete combined wall and the transverse corrugated steel plate wall to bear horizontal force, solves the problems that the steel plate wall influences the communication requirement between different compartments of a bottom layer and the steel plate wall is difficult to arrange in the X direction of a housing system or an LOFT apartment system through the combination of two or more lateral force resisting components of a steel support and the corrugated steel plate combined wall or the transverse corrugated steel plate wall, realizes the standard requirement that the lateral force resisting component needs to be arranged in both directions, meets the large space requirement of the structural system, fully exerts the characteristic that the lateral rigidity of the corrugated steel plate combined wall or the transverse corrugated steel plate wall is superior to that of the support, is reasonably combined, and can serve the space application and the aesthetic requirement and fully exert the function of building materials.
Furthermore, the wave form steel sheet compoboard wall includes two first wave form steel sheets and the split bolt of fixed connection between two first wave form steel sheets, and first wave form steel sheet welding forms the cavity between two multi-chamber steel core concrete columns, first wave form steel sheet and the multi-chamber steel core concrete column, has poured into the concrete in the cavity, and the crest and the trough of first wave form steel sheet are horizontal direction continuous distribution. The corrugated steel plate has good stability, the buckling resistance bearing capacity of the corrugated steel plate can be several times to dozens of times higher than that of a flat steel plate, the corrugated steel plate is restrained by concrete and split bolts, the bending and shearing resistance bearing capacity of the corrugated steel plate is greatly improved, the concrete is restrained by the corrugated steel plate and the split bolts, the compressive strength of the concrete can be fully exerted, and the using amount of steel is remarkably reduced.
Furthermore, the corrugated steel plate combination wall adopts one or more of a straight corrugated steel plate combination wall, an L-shaped corrugated steel plate combination wall, a T-shaped corrugated steel plate combination wall, a groove corrugated steel plate combination wall, a cross corrugated steel plate combination wall and a Z-shaped corrugated steel plate combination wall. And arranging the corrugated steel plate composite wall of the corresponding type according to the requirements of construction engineering.
Furthermore, horizontal wave form steel sheet wall includes second wave form steel sheet and frame roof beam, and the crest and the trough of second wave form steel sheet are vertical direction continuous distribution, and second wave form steel sheet welding is between two adjacent frame roof beams, and second wave form steel sheet fixed connection is between two multi-chamber steel core concrete columns. In horizontal wave form steel sheet wall, the wave form steel sheet is horizontal to be set up, can make the wave form steel sheet have the continuity in vertical direction, can satisfy the assembly requirement of certain height with horizontal wave form steel sheet wall. The transverse corrugated steel plate wall can adopt a transverse corrugated steel plate wall formed by fully distributing a second corrugated steel plate between two multi-cavity steel pipe concrete columns; a transverse corrugated steel plate wall which can be formed by arranging second corrugated steel plates between two multi-cavity steel pipe concrete columns at intervals; the energy-consuming type transverse corrugated steel plate wall with the second corrugated steel plate and the multi-cavity steel pipe concrete columns on the two sides not connected can be adopted; or a transverse corrugated steel plate wall formed by filling concrete among a plurality of second corrugated steel plates can be adopted.
Furthermore, the surface welding of second wave form steel sheet has the stiffening rib of vertical distribution, strengthens the crest and the trough of second wave form steel sheet, avoids the second wave form steel sheet the deformation condition to appear for second wave form steel sheet is applicable to the ascending continuous installation of vertical side.
Furthermore, a fixing plate is welded between the multi-cavity steel tube concrete column and the steel beam, and the fixing plate is fixedly connected with the steel support. Can weld the fixed plate as the short limb between multi-chamber steel core concrete column and girder steel earlier, the installation of steel shotcrete is carried out in the later stage, guarantees steel bearing structure's integrality, and full play steel shotcrete is to the frame support effect that multi-chamber steel core concrete column and girder steel are connected.
Furthermore, be equipped with the connecting plate between fixed plate and the steel shotcrete, pass through bolt fastening between connecting plate and the fixed plate, pass through bolt fastening between connecting plate and the steel shotcrete for can dismantle the connection between fixed plate and the steel shotcrete, and then make the installation or the dismantlement of steel shotcrete have the flexibility.
Furthermore, the fixed plate is equipped with the stiffening plate, and the stiffening plate welding increases the joint strength between fixed plate and the multi-chamber steel core concrete column on the multi-chamber steel core concrete column for the fixed plate has sufficient bearing capacity.
Furthermore, the multi-cavity steel pipe concrete column adopts the second steel plate of welding between two first steel plates, and the steel sheet tip of first steel plate outwards stretches out from the second steel plate, and girder steel fixed connection is on the second steel plate. Form the notch between the steel sheet tip of first steel sheet and the second steel sheet, the welding has the reinforcing plate in the notch, and girder steel fixed connection is on the reinforcing plate. Can satisfy the demand of closely laminating between multi-chamber steel core concrete column and the girder steel, make this multi-chamber steel core concrete column into standard component, be applicable to different projects.
Furthermore, the multi-cavity concrete filled steel tube column adopts one or more of an L-shaped multi-cavity special-shaped column, a T-shaped multi-cavity special-shaped column, a cross-shaped multi-cavity special-shaped column and a flat column. The flat column can be divided into a multi-cavity flat column and a welding flat column. And arranging the multi-cavity concrete-filled steel tube column of the corresponding type according to the requirements of construction engineering.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
the lateral force resisting component adopts the corrugated steel plate concrete combined wall and the transverse corrugated steel plate wall to bear horizontal force, solves the problems that the steel plate wall influences the communication requirement between different compartments of a bottom layer and the steel plate wall is difficult to arrange in the X direction of a housing system or an LOFT apartment system through the combination of two or more lateral force resisting components of a steel support and the corrugated steel plate combined wall or the transverse corrugated steel plate wall, realizes the standard requirement that the lateral force resisting component needs to be arranged in both directions, meets the large space requirement of the structural system, fully exerts the characteristic that the lateral rigidity of the corrugated steel plate combined wall or the transverse corrugated steel plate wall is superior to that of the support, is reasonably combined, and can serve the space application and the aesthetic requirement and fully exert the function of building materials.
Drawings
The utility model will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a multi-cavity steel tube frame corrugated steel plate wall and support mixed structure system according to the present invention;
FIG. 2 is a top view of a corrugated steel plate composite wall according to the present invention;
FIG. 3 is a front view of the corrugated steel plate composite wall of the present invention;
FIG. 4 is a schematic structural view of a transverse corrugated steel plate wall according to the present invention;
FIG. 5 is a schematic structural view of a steel support according to the present invention;
FIG. 6 is a schematic structural view of an L-shaped multi-cavity profiled pole of the present invention;
FIG. 7 is a schematic structural view of a T-shaped multi-cavity profiled pole of the present invention;
FIG. 8 is a schematic structural view of a cross-shaped multi-cavity profiled pole according to the present invention;
FIG. 9 is a schematic structural view of a first embodiment of the spade post of the present invention;
FIG. 10 is a schematic structural view of a second embodiment of the spade according to the present invention;
FIG. 11 is a schematic structural view of a third embodiment of the spade post of the present invention;
fig. 12 is a schematic structural view of a fourth embodiment of the oblate column of the present invention.
In the drawings, 1-steel beam; 2-supporting steel; 3-corrugated steel plate combined wall; 31-a first corrugated steel plate; 32-split bolts; 33-a cavity; 4-horizontal corrugated steel plate walls; 41-a second corrugated steel plate; 42-frame beam; 43-a stiffener; 44-welding a plate; 5, fixing a plate; 6-connecting plates; 7-a stiffening plate; 81-L-shaped multi-cavity special-shaped columns; an 82-T shaped multi-cavity special-shaped column; 83-a cross-shaped multi-cavity special-shaped column; 84-welding flat columns; 85-multi-cavity flat column; 86-a first steel plate; 87-a second steel plate; 88-reinforcing plate.
Detailed Description
As shown in fig. 1 to 12, a multi-cavity steel tube frame corrugated steel plate wall and support mixed structure system according to the present invention includes a lateral force resisting member, a multi-cavity steel tube concrete column and a steel beam 1, wherein the lateral force resisting member is one of a lateral force resisting member a, a lateral force resisting member B and a lateral force resisting member C.
The lateral force resisting component A is formed by mixing and arranging a corrugated steel plate combination wall 3, a transverse corrugated steel plate wall 4 and a steel support 2.
The lateral force resisting component B is formed by mixing and arranging a corrugated steel plate combination wall 3 and a steel support 2.
The lateral force resisting component C is formed by mixing and arranging a transverse corrugated steel plate wall 4 and a steel support 2.
In the lateral force resisting component, the steel support 2 is obliquely and fixedly connected between the two multi-cavity steel tube concrete columns, and is fixedly connected between the two steel beams 1. The steel support 2 may be one of a rectangular steel pipe, an H-shaped steel, and a circular pipe.
The lateral force resisting component adopts the corrugated steel plate concrete combined wall and the transverse corrugated steel plate wall to bear horizontal force, solves the problems that the steel plate wall influences the communication requirement between different compartments of a bottom layer and the steel plate wall is difficult to arrange in the X direction of a housing system or an LOFT apartment system through the combination of two or more lateral force resisting components of a steel support and the corrugated steel plate combined wall or the transverse corrugated steel plate wall, realizes the standard requirement that the lateral force resisting component needs to be arranged in both directions, meets the large space requirement of the structural system, fully exerts the characteristic that the lateral rigidity of the corrugated steel plate combined wall or the transverse corrugated steel plate wall is superior to that of the support, is reasonably combined, and can serve the space application and the aesthetic requirement and fully exert the function of building materials.
As shown in fig. 2 and 3, the corrugated steel plate composite wall 3 is specifically designed according to the utility model: the corrugated steel plate combination wall 3 comprises two first corrugated steel plates 31 and a split bolt 32 fixedly connected between the two first corrugated steel plates 31, the first corrugated steel plates 31 are welded between the two multi-cavity steel tube concrete columns, a cavity 33 is formed between the first corrugated steel plates 31 and the multi-cavity steel tube concrete columns, concrete is poured into the cavity 33, and the wave crests and the wave troughs of the first corrugated steel plates 31 are continuously distributed in the horizontal direction. The corrugated steel plate has good stability, the buckling resistance bearing capacity of the corrugated steel plate can be several times to dozens of times higher than that of a flat steel plate, the corrugated steel plate is restrained by concrete and the tension bolts 32, the bending and shearing resistance bearing capacity of the corrugated steel plate is greatly improved, the concrete is restrained by the corrugated steel plate and the tension bolts 32, the compressive strength of the concrete can be fully exerted, and the using amount of steel is obviously reduced.
The corrugated steel plate composite wall 3 is one or more of a straight corrugated steel plate composite wall, an L-shaped corrugated steel plate composite wall, a T-shaped corrugated steel plate composite wall, a groove corrugated steel plate composite wall, a cross corrugated steel plate composite wall and a Z-shaped corrugated steel plate composite wall. And arranging the corrugated steel plate composite wall of the corresponding type according to the requirements of construction engineering.
As shown in fig. 4, the present invention specifically designs a transverse corrugated steel plate wall 4: horizontal wave form steel sheet wall 4 includes second wave form steel sheet 41 and frame roof beam 42, and the crest and the trough of second wave form steel sheet 41 are vertical direction continuous distribution, and second wave form steel sheet 41 welds between two adjacent frame roof beams 42, and second wave form steel sheet 41 fixed connection is between two multi-chamber steel core concrete columns, and second wave form steel sheet 41 can adopt welded plate 44 and multi-chamber steel core concrete column fixed connection. In horizontal corrugated steel plate wall 4, the corrugated steel plate is horizontal to be set up, can make the corrugated steel plate have the continuity in vertical direction, can satisfy the assembly requirement of certain height with horizontal corrugated steel plate wall 4. The transverse corrugated steel plate wall 4 can adopt a transverse corrugated steel plate wall 4 formed by fully distributing a second corrugated steel plate 41 between two multi-cavity steel pipe concrete columns; a transverse corrugated steel plate wall 4 which can be arranged between two multi-cavity steel tube concrete columns at intervals by adopting a second corrugated steel plate 41; the energy-consuming type transverse corrugated steel plate wall 4 with the second corrugated steel plate 41 not connected with the multi-cavity steel tube concrete columns on the two sides can be adopted; the transverse corrugated steel plate wall 4 formed by filling concrete among the plurality of second corrugated steel plates 41 may also be used.
The welding of second wave form steel sheet 41's surface has stiffening rib 43 of vertical distribution, strengthens the crest and the trough of second wave form steel sheet 41, avoids second wave form steel sheet 41 the deformation condition to appear for second wave form steel sheet 41 is applicable to the ascending continuous installation of vertical side.
As shown in fig. 5, the connection mode of the utility model to the steel support 2 is specifically designed as follows: the welding has fixed plate 5 between multicavity steel core concrete column and the girder steel 1, fixed plate 5 and steel shotcrete 2 fixed connection. Can weld as the short limb with fixed plate 5 between multi-chamber steel core concrete column and girder steel 1 earlier, the installation of steel shotcrete 2 is carried out in the later stage, guarantees the integrality of 2 structures of steel shotcrete, and the frame that full play steel shotcrete 2 is connected multi-chamber steel core concrete column and girder steel 1 supports the effect.
Be equipped with connecting plate 6 between fixed plate 5 and the steel shotcrete 2, through the bolt fastening between connecting plate 6 and the fixed plate 5, through the bolt fastening between connecting plate 6 and the steel shotcrete 2 for can dismantle the connection between fixed plate 5 and the steel shotcrete 2, and then make the installation or the dismantlement of steel shotcrete 2 have the flexibility.
Fixed plate 5 is equipped with stiffening plate 7, and the welding of stiffening plate 7 is on multi-chamber steel core concrete column, increases the joint strength between fixed plate 5 and the multi-chamber steel core concrete column for fixed plate 5 has sufficient bearing capacity.
As shown in fig. 6 to 12, the present invention specifically designs a multi-cavity concrete filled steel tubular column: the multi-cavity concrete filled steel tubular column adopts the second steel plate 87 welded between two first steel plates 86, the steel plate end parts of the first steel plates 86 extend outwards from the second steel plates 87, and the steel beam 1 is fixedly connected onto the second steel plates 87. Form the notch between first steel sheet 86's steel sheet tip and the second steel sheet 87, the welding has reinforcing plate 88 in the notch, and girder steel 1 fixed connection can adopt the bolt fastening with the web of reinforcing plate 88 and the web of girder steel 1 on reinforcing plate 88. Can satisfy the demand of closely laminating between multi-chamber steel core concrete column and the girder steel 1, make into standard component with this multi-chamber steel core concrete column, be applicable to different projects.
The multi-cavity steel pipe concrete column adopts one or more of an L-shaped multi-cavity special-shaped column 81, a T-shaped multi-cavity special-shaped column 82, a cross-shaped multi-cavity special-shaped column 83 and a flat column. The flat column can be divided into a multi-cavity flat column 85 and a welding flat column 84, in the first embodiment of the flat column, no partition plate is arranged in the flat column, and two ends of the flat column are used for fixing the steel beam 1 and are used as the welding flat column 84. In the second embodiment of the flat column, two partition plates are arranged in the flat column, and two ends of the two partition plates are used for fixing the steel beam 1 and are used as the multi-cavity flat column 85. In the third embodiment of the flat column, no partition plate is arranged inside the flat column, and one end of the flat column is used for fixing the steel beam 1 and is used as the welding flat column 84. In the fourth embodiment of the flat column, a single partition board is arranged in the flat column, and two ends of the partition board are used for fixing the steel beam 1 to form the multi-cavity flat column 85. And arranging the multi-cavity concrete-filled steel tube column of the corresponding type according to the requirements of construction engineering.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (10)
1. The utility model provides a multi-chamber steel pipe frame wave form steel sheet wall and support mixed structure system which characterized in that: the steel-tube concrete column comprises a lateral force resisting component, a multi-cavity steel-tube concrete column and a steel beam, wherein the lateral force resisting component is one of a lateral force resisting component A, a lateral force resisting component B and a lateral force resisting component C;
the lateral force resisting component A is formed by mixing and arranging a corrugated steel plate combination wall, a transverse corrugated steel plate wall and a steel support;
the lateral force resisting component B is formed by mixing and arranging a corrugated steel plate combination wall and a steel support;
the lateral force resisting component C is formed by mixing and arranging a transverse corrugated steel plate wall and a steel support;
in the lateral force resisting component, the steel support is obliquely and fixedly connected between the two multi-cavity concrete filled steel tubular columns, and is fixedly connected between the two steel beams.
2. A multi-cavity steel tube frame corrugated steel plate wall and support hybrid structural system according to claim 1, wherein: the corrugated steel plate composite wall comprises two first corrugated steel plates and two oppositely-pulling bolts fixedly connected between the first corrugated steel plates, the first corrugated steel plates are welded between the multi-cavity steel tube concrete columns, a cavity is formed between the first corrugated steel plates and the multi-cavity steel tube concrete columns, concrete is poured into the cavity, and the wave crests and the wave troughs of the first corrugated steel plates are continuously distributed in the horizontal direction.
3. A multi-cavity steel tube frame corrugated steel plate wall and support hybrid structural system according to claim 2, wherein: the corrugated steel plate combined wall is one or more of a straight corrugated steel plate combined wall, an L-shaped corrugated steel plate combined wall, a T-shaped corrugated steel plate combined wall, a groove-shaped corrugated steel plate combined wall, a cross corrugated steel plate combined wall and a Z-shaped corrugated steel plate combined wall.
4. A multi-cavity steel tube frame corrugated steel plate wall and support hybrid structural system according to claim 1, wherein: the horizontal corrugated steel plate wall comprises a second corrugated steel plate and frame beams, the wave crests and the wave troughs of the second corrugated steel plate are continuously distributed in the vertical direction, the second corrugated steel plate is welded between the frame beams in adjacent two, and the second corrugated steel plate is fixedly connected between the multi-cavity steel pipe concrete columns.
5. The multi-cavity steel tube frame corrugated steel plate wall and support hybrid structural system according to claim 4, wherein: and stiffening ribs which are vertically distributed are welded on the surface of the second corrugated steel plate.
6. A multi-cavity steel tube frame corrugated steel plate wall and support hybrid structural system according to claim 1, wherein: the multi-cavity steel core concrete column with the welding has the fixed plate between the girder steel, the fixed plate with steel shotcrete fixed connection.
7. The multi-cavity steel tube frame corrugated steel plate wall and support hybrid structural system according to claim 6, wherein: the steel support is characterized in that a connecting plate is arranged between the fixing plate and the steel support, the connecting plate is fixed with the fixing plate through bolts, and the connecting plate is fixed with the steel support through bolts.
8. The multi-cavity steel tube frame corrugated steel plate wall and support hybrid structural system according to claim 6, wherein: the fixed plate is provided with a reinforcing plate, and the reinforcing plate is welded on the multi-cavity concrete-filled steel tube column.
9. A multi-cavity steel tube frame corrugated steel plate wall and support hybrid structural system according to claim 1, wherein: the multi-cavity steel pipe concrete column adopts and welds the second steel sheet between two first steel sheets, the steel sheet tip of first steel sheet is followed outwards stretch out on the second steel sheet, the steel sheet tip of first steel sheet with form the notch between the second steel sheet, the welding has the reinforcing plate in the notch, girder steel fixed connection is in on the reinforcing plate.
10. A multi-cavity steel tube frame corrugated steel plate wall and support hybrid structural system according to claim 9, wherein: the multi-cavity concrete filled steel tube column is one or more of an L-shaped multi-cavity special-shaped column, a T-shaped multi-cavity special-shaped column, a cross-shaped multi-cavity special-shaped column and a flat column.
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| CN202122457453.5U CN216475702U (en) | 2021-10-12 | 2021-10-12 | Multi-cavity steel pipe frame corrugated steel plate wall and support mixed structure system |
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| CN202122457453.5U CN216475702U (en) | 2021-10-12 | 2021-10-12 | Multi-cavity steel pipe frame corrugated steel plate wall and support mixed structure system |
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