CN215406927U - Assembled concrete column - Google Patents
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- CN215406927U CN215406927U CN202023046549.4U CN202023046549U CN215406927U CN 215406927 U CN215406927 U CN 215406927U CN 202023046549 U CN202023046549 U CN 202023046549U CN 215406927 U CN215406927 U CN 215406927U
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Abstract
The utility model provides an assembled concrete column, belongs to the building technology field, including column cap component, precast concrete column, the pre-buried end of column cap component, post precast concrete, post atress owner muscle, the pre-buried end of column base component, post stirrup, the pre-buried end of column cap component pre-buried end, column base shearing force transmission cylinder and the interior post atress owner muscle welding of precast concrete column link to each other, pour into holistic concrete column after the ligature of post stirrup. According to the utility model, the column head component is arranged on the column head, and the column foot component is arranged on the column foot, so that the columns and the beams can be quickly and stably assembled.
Description
Technical Field
The utility model belongs to the technical field of buildings, and particularly relates to an assembled concrete column.
Background
With the increasingly urgent need of building industry industrialization, the prefabricated assembled structure system can well reflect the characteristics of industrial production and is a recent hot research problem. The connection between post and the post is mostly in assembled concrete frame structure, and the connection between the prefabricated post often adopts grout muffjoint's mode to realize, and grout sleeve is pre-buried and the bottom of the prefabricated post in upper portion, and on the reinforcing bar of the prefabricated post of lower part stretched out the cast-in-place layer of floor, reserved length guaranteed reinforcing bar anchor length in grout sleeve and the width of piece under the prefabricated post. After the cast-in-place concrete pouring and maintenance of the floor are finished, the upper prefabricated column is hoisted, the lower steel bar extends into a grouting cylinder of the upper prefabricated column, and the prefabricated column is subjected to grouting operation after temporary adjustment and fixation. However, this method is inefficient, time consuming and labor intensive.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical problems, the utility model provides an assembled concrete column, which realizes the quick and stable assembly between columns and beams by arranging column head members on a column head and column foot members on a column foot.
The utility model adopts the following technical scheme:
an assembled concrete column comprises a column head component, a precast concrete column, a column head shearing-resistant force transmission cylinder, a column head anchoring communication hole, a column head connecting and supporting bulge, a column head connecting piece accommodating gap, a stiffening force transmission plate, a beam connecting screw hole, a column connecting plate, a column connecting bolt hole of the column head component, an operation hole, a column head component embedded end, a column foot shearing-resistant force transmission cylinder, a column foot anchoring communication hole, a lower column connecting plate, a column connecting bolt hole of the column foot component, column precast concrete, a column stress main rib, a column foot component embedded end, a column foot component and a column hoop rib, wherein the column head component comprises a column head shearing-resistant force transmission cylinder, a column head anchoring communication hole, a column head connecting and supporting bulge, a column head connecting piece accommodating gap, a stiffening force transmission plate, a beam connecting screw hole, a column connecting bolt hole of the column head component and an operation hole, the lower part of the column head component is a square column head shearing-resistant force transmission cylinder, the upper part is a column head force transmission cylinder connecting end, the connecting end is a square column head anti-shearing force transmission cylinder, the middle parts of four sides at the top part are downwards sunken, the four sides are convexly connected and supported with right-angle column heads reserved at four corners to form column head connecting piece accommodating gaps, a # -shaped stiffening force transmission plate is arranged between the column head connecting piece accommodating gaps, the # -shaped stiffening force transmission plate is connected with the convex side edge of the column head connecting and supporting in a welding way, one surface of the stiffening force transmission plate connected with the convex side edge of the column head connecting and supporting is a beam connecting plate, the beam connecting plate protrudes out the side edge of the column head anti-shearing force transmission cylinder, beam connecting screw holes are respectively arranged in the inner side edge and the outer side edge of the convex side edge of the column head connecting and supporting on the beam connecting plate, a right-angle column connecting plate is welded at the top part between the adjacent beam connecting plates at the four corners, column connecting plate is provided with column head component connecting bolt holes, and the # -shaped stiffening force transmission plate is reserved with operation holes, column cap anchoring communication holes are formed in four sides of the column cap shearing-resistant force transmission cylinder, bent portions are arranged inwards of the column cap anchoring communication holes, and the column cap anchoring communication holes in the adjacent side faces are arranged in a staggered mode; the column base component comprises a column base anti-shearing force transmission cylinder, column base anchoring communication holes, a lower column connecting plate and column connecting bolt holes of the column base component, the column base component is in a square column shape as a whole, column base anchoring communication holes are formed in four side walls of a cylinder body of the column base anti-shearing force transmission cylinder respectively, bent portions are arranged inwards of the column base anchoring communication holes, the column base anchoring communication holes on adjacent side surfaces are arranged in a staggered mode, the width of each column base anchoring communication hole is not more than one third of the width of the side surface of the column base anti-shearing force transmission cylinder, the lower column connecting plate which extends out of the column base anti-shearing force transmission cylinder and is perpendicular to the column base anti-shearing force transmission cylinder is integrally formed below the column base anti-shearing force transmission cylinder, column connecting bolt holes of the column base component are formed in four corners of the lower column connecting plate, the column base anchoring communication holes and the column base anchoring communication holes are all formed by cutting or cutting holes of original plates and bending the column base anti-shearing force transmission cylinder inwards by 90 degrees after the side surfaces of the column base connecting plate are cut, and the embedded ends of the column head component and the column foot shear-resistant force transmission cylinder are welded with column stressed main reinforcements in the precast concrete column, and the column head component and the column foot shear-resistant force transmission cylinder are bound by column hooping reinforcements and then cast into the integral concrete column.
Further, the cutting or cutting line is H,
And the inner bending radius is not less than one half of the thickness of the plate, and the inner bending length is 1.5 times of the thickness of the steel plate.
Furthermore, when the cutting line is H-shaped, the cutting line comprises an H-shaped vertical cutting line and an H-shaped horizontal cutting line, an upper rectangular bending part and a lower rectangular bending part are formed on the side surface of the shear-resistant force transmission cylinder after the cutting along the vertical cutting line and the horizontal cutting line, and the two rectangular bending parts are bent inwards by 90 degrees along the horizontal bending lines at the upper end part and the lower end part of the rectangular bending parts to form an anchoring communication hole.
Further, the cutting line is
When forming, comprises
The lateral surfaces of the shear-resistant force transmission cylinder are formed into a first triangular bending part at the left side and a second triangular bending part at the right side and a trapezoidal bending part at the upper side and the lower side after being cut along the oblique cutting line and the middle transverse cutting line, and the first triangular bending part and the trapezoidal bending part are respectively bent inwards by 90 degrees along a vertical bending line and a transverse bending line to form an anchoring communication hole.
Furthermore, when the cutting line is X-shaped, the cutting line comprises an X-shaped diagonal oblique cutting line, the side surface of the shearing-resistant force transmission cylinder after the cutting of the diagonal oblique cutting line forms an upper triangular bending part, a lower triangular bending part, a left triangular bending part and a right triangular bending part, and the four triangular bending parts are bent inwards by 90 degrees along a vertical bending line and a transverse bending line respectively to form an anchoring communication hole.
Furthermore, the concrete columns are fixedly connected through bolts after column connecting plates of column head members are in butt joint with lower column connecting plates of column foot members.
Furthermore, the column head shearing-resistant force-transmitting cylinder and the column foot shearing-resistant force-transmitting cylinder are made of steel plates and section steel materials, the section size and the material thickness of the column head shearing-resistant force-transmitting cylinder are determined by calculation according to the section size of the column and the born internal force, and the sections are in a shape like a Chinese character kou, an X or a well.
The utility model has the advantages and effects that: according to the utility model, the column head component is arranged on the column head, and the column foot component is arranged on the column foot, so that the columns and the beams can be quickly and stably assembled. The column head and column foot anchoring communication holes are formed in the force transmission cylinders of the column head and column foot components, are cut or cut into holes in a raw plate and are formed by bending the column head and column foot shearing-resistant force transmission cylinders by 90 degrees inwards after being cut on the side faces, and the integrity is improved by the aid of the design of the openings; secondly, the baffle plate which is internally folded by 90 degrees plays a role of a tenon, and has the advantages of improving the shearing resistance and the stress performance; and thirdly, an effective shearing key can be formed in the space wrapped by two or four baffles folded inwards by 90 degrees, so that the bearing capacity is improved.
Drawings
FIG. 1 is a schematic view of a fabricated concrete column structure according to the present invention;
FIG. 2 is a schematic view of a column head component;
FIG. 3 is a schematic view of a column shoe component;
FIG. 4 is a schematic cross-sectional view of a force-transmitting cylinder for a column head and a column foot;
FIG. 5 is a schematic cross-sectional view of a column head and a column foot force-transmitting cylinder;
FIG. 6 is a schematic cross-sectional view of a force-transmitting cylinder for column head and column foot;
FIG. 7 is a schematic view of an H-shaped cut of the column head and the column foot anchoring communication hole;
FIG. 8 is a schematic view of the H-shaped cut-out bent portion of the stud and stud-foot anchoring communication hole;
FIG. 9 shows the column head and column foot anchoring communication hole
A pattern cutting schematic diagram;
FIG. 10 shows the column head and column foot anchoring communication hole
Schematic view of the post-profile cut bend;
FIG. 11 is an X-shaped cut-out view of the stud and stud-foot anchoring communication hole;
FIG. 12 is a schematic view of the X-cut bent portion of the stud and stud-foot anchoring communication hole.
The components in the figure: 1 is a column cap component, 1-1 vertical cutting line, 1-2 horizontal cutting line, 1-3 rectangular bending part, 1-4 horizontal bending line, 1-5 oblique cutting line, 1-6 middle horizontal cutting line, 1-7 triangle bending part I, 1-8 trapezoid bending part, 1-9 diagonal oblique cutting line, 1-10 triangle bending part II, 1-11 vertical bending line, 2 is precast concrete column, 2-1 column cap shearing resistance force transfer cylinder, 2-2 column cap anchoring communication hole, 2-3 column cap connecting support projection, 2-4 column cap connecting piece accommodating gap, 2-5 stiffening force transfer plate, 2-6 beam connecting plate, 2-7 beam connecting screw hole, 2-8 column connecting plate, 2-9 column connecting bolt hole of column cap component, 2-10 is an operation hole, 3 is a column cap member embedded end, 3-1 is a column base shear-resistant force transmission cylinder, 3-2 is a column base anchoring communication hole, 3-3 is a lower column connecting plate, 3-4 is a column connecting bolt hole of a column base member, 4 is column precast concrete, 5 is a column stressed main rib, 6 is a column base member embedded end, 7 is a column base member, and 8 is a column stirrup.
Detailed Description
The utility model is further explained below with reference to the figures and the examples.
An assembled concrete column comprises a column head component 1, a prefabricated concrete column 2, a column head shear-resistant force-transfer cylinder 2-1, column head anchoring communication holes 2-2, column head connecting support protrusions 2-3, column head connecting piece accommodating gaps 2-4, stiffening force-transfer plates 2-5, beam connecting plates 2-6, beam connecting screw holes 2-7, column connecting plates 2-8, column connecting bolt holes 2-9 of the column head component, operation holes 2-10, column head component embedded ends 3, column foot shear-resistant force-transfer cylinders 3-1, column foot anchoring communication holes 3-2, lower column connecting plates 3-3, column connecting bolt holes 3-4 of the column foot component, column prefabricated concrete 4, column stressed main ribs 5, column foot component embedded ends 6, column foot components 7 and column hoop ribs 8, wherein the column head component 1 comprises the column head shear-resistant force-transfer cylinder 2-1, the column head anchoring communication holes 2-9, the column foot component accommodating gaps 2-4, the column head connecting support protrusions 3, the column foot components and the column hoop ribs 8, Column head anchoring communication holes 2-2, column head connecting support bulges 2-3, column head connecting piece accommodating gaps 2-4, stiffening dowel plates 2-5, beam connecting plates 2-6, beam connecting screw holes 2-7, column connecting plates 2-8, column connecting bolt holes 2-9 of column head components and operation holes 2-10, wherein the lower parts of the column head components are square column head anti-shearing force transfer cylinders 2-1, the upper parts of the column head force transfer cylinders are column head force transfer cylinder connecting ends, the connecting ends are square column head anti-shearing force transfer cylinders, the middle parts of four sides of the top of the square column head anti-shearing force transfer cylinders are downwards sunken, the column head connecting piece accommodating gaps 2-4 are formed by the connecting support bulges 2-3 of right-angle column heads reserved at four corners, groined stiffening dowel plates 2-5 are arranged between the column head connecting piece accommodating gaps, the groined stiffening dowel plates 2-5 are welded with the side edges of the column head connecting support bulges 2-3, the side of the stiffening dowel plate 2-5 connected with the side of the column head connecting support bulge 2-3 is provided with a beam connecting plate 2-6, the beam connecting plate 2-6 protrudes out of the side of the column head anti-shearing dowel cylinder 2-1, the beam connecting plate 2-6 is provided with beam connecting screw holes 2-7 on the inner side and the outer side of the column head connecting support bulge 2-3, a right-angle column connecting plate 2-8 is welded at the top between the adjacent beam connecting plates 2-6 at four corners, column connecting bolt holes 2-9 of column head components are arranged on the beam connecting plate 2-6, an operation hole 2-10 is reserved between the column connecting plate 2-8 and the # -shaped stiffening dowel plate 2-5, column head anti-shearing dowel cylinders 2-2 are provided with column head anchoring communication holes 2-2 on four sides, and the column head anchoring communication holes 2-2 are inwards provided with a bending part, the column head anchoring communication holes 2-2 on the adjacent side surfaces are arranged in a staggered way; the column base component 7 comprises a column base shearing-resistant force transmission cylinder 3-1, a column base anchoring communication hole 3-2, a lower column connecting plate 3-3 and a column connecting bolt hole 3-4 of the column base component, the column base component is integrally in a square column shape, column base anchoring communication holes 3-2 are respectively formed in four side walls of a cylinder body of the column base shearing-resistant force transmission cylinder 3-1, a bent part is inwards arranged in each column base anchoring communication hole 3-2, the column base anchoring communication holes 3-2 on adjacent side surfaces are arranged in a staggered mode, the width of each column base anchoring communication hole 3-2 is not more than one third of the width of the side surface of the column base shearing-resistant force transmission cylinder 3-1, the lower column connecting plate 3-3 extending out of the column base shearing-resistant force transmission cylinder 3-1 and arranged perpendicular to the column base shearing-resistant force transmission cylinder 3-1 is integrally formed below the column base shearing-resistant force transmission cylinder 3-1, column connecting bolt holes 3-4 of column base components are arranged at four corners of the lower column connecting plate 3-3, the column base anchoring communication holes 3-2 and the column head anchoring communication holes 2-2 are all formed by cutting or cutting holes on a raw plate and bending inwards for 90 degrees after cutting the side surface of the force transmission cylinder, the embedded ends 3 of the column head components and the embedded ends of the column base shearing-resistant force transmission cylinders 3-1 are welded and connected with column stress main reinforcements 5 in the precast concrete column, and the column head components and the column head shearing-resistant force transmission cylinders are bound by column stirrups 8 to form an integral concrete column.
The cutting or cutting line is H,
And the inner bending radius is not less than one half of the thickness of the plate, and the inner bending length is 1.5 times of the thickness of the steel plate.
When the cutting line is H-shaped, the cutting line comprises an H-shaped vertical cutting line 1-1 and a horizontal cutting line 1-2, an upper rectangular bending part 1-3 and a lower rectangular bending part 1-3 are formed on the side surface of the shear-resistant force transmission cylinder after the cutting along the vertical cutting line 1-1 and the horizontal cutting line 1-2, and the two rectangular bending parts 1-3 are inwards bent by 90 degrees along the horizontal bending lines 1-4 at the upper end part and the lower end part to form an anchoring communication hole.
The cutterIs cut off by
When forming, comprises
The lateral surfaces of the shear-resistant force transmission cylinder are cut along the oblique cutting lines 1-5 and the middle transverse cutting lines 1-6 to form triangular bending parts 1-7 at the left and right sides and trapezoidal bending parts 1-8 at the upper and lower sides, and the triangular bending parts 1-7 and the trapezoidal bending parts 1-8 are bent inwards by 90 degrees along vertical bending lines 1-11 and transverse bending lines 1-4 respectively to form anchoring communication holes.
When the cutting line is in an X shape, the cutting line comprises diagonal oblique cutting lines 1-9 in the X shape, four triangular bending parts two 1-10 in the upper, lower, left and right directions are formed on the side surface of the shear-resistant force transmission cylinder after the diagonal oblique cutting lines 1-9 are cut, and the four triangular bending parts two 1-10 are inwards bent by 90 degrees along vertical bending lines 1-11 and transverse bending lines 1-4 respectively to form anchoring communication holes.
The concrete columns are fixedly connected through bolts after being butted with lower column connecting plates 3-3 of column foot members 7 through column connecting plates 2-8 of column head members 1.
Claims (7)
1. The utility model provides an assembled concrete column which characterized in that: the column head component comprises a column head component (1), a precast concrete column (2), a shear-resistant force-transmitting cylinder (2-1) serving as a column head, column head anchoring communication holes (2-2), column head connecting support protrusions (2-3), column head connecting piece accommodating gaps (2-4), stiffening force-transmitting plates (2-5), beam connecting plates (2-6), beam connecting screw holes (2-7), column connecting plates (2-8), column connecting bolt holes (2-9) of the column head component, operation holes (2-10), embedded ends (3) of the column head component, shear-resistant force-transmitting cylinders (3-1) of the column head, column foot anchoring communication holes (3-2), lower column connecting plates (3-3), column connecting bolt holes (3-4) of the column foot component, precast concrete (4) of the column, column stressed main ribs (5), embedded ends (6) of the column foot component, The column foot component (7) and the column hoop (8), the column head component (1) comprises a column head anti-shearing force transfer cylinder (2-1), a column head anchoring communication hole (2-2), a column head connecting support protrusion (2-3), a column head connecting piece accommodating gap (2-4), a stiffening force transfer plate (2-5), a beam connecting plate (2-6), a beam connecting screw hole (2-7), a column connecting plate (2-8), a column connecting bolt hole (2-9) and an operation hole (2-10) of the column head component, the lower part of the column head component is a square column head anti-shearing force transfer cylinder (2-1), the upper part of the column head component is a column head force transfer cylinder connecting end, the connecting end is a square column head anti-shearing force transfer cylinder, the middle parts of the four sides of the top part of the square column head are downwards sunken, and the column head connecting support protrusion (2-3) which is reserved at the four corners form a column head connecting piece accommodating gap (2-4), the column head connecting piece is characterized in that a groined stiffening dowel plate (2-5) is arranged between the accommodating gaps of the column head connecting piece, the groined stiffening dowel plate (2-5) is connected with the side edge of the column head connecting and supporting bulge (2-3) in a welding way, one side of the stiffening dowel plate (2-5) connected with the side edge of the column head connecting and supporting bulge (2-3) is a beam connecting plate (2-6), the beam connecting plate (2-6) protrudes out of the side edge of the column head anti-shearing force transfer cylinder (2-1), beam connecting screw holes (2-7) are respectively formed in the inner side and the outer side of the side edge of the column head connecting and supporting bulge (2-3) on the beam connecting plate (2-6), right-angle column connecting plates (2-8) are welded at the tops between adjacent beam connecting plates (2-6) at four corners, and column connecting bolt holes (2-9) of column head components are formed on the beam connecting plates, operation holes (2-10) are reserved between the column connecting plate (2-8) and the # -shaped stiffening force transfer plate (2-5), column head anchoring communication holes (2-2) are formed in all four sides of the column head shearing-resistant force transfer cylinder (2-1), bent portions are inwards arranged in the column head anchoring communication holes (2-2), and the column head anchoring communication holes (2-2) on the adjacent side surfaces are arranged in a staggered mode; the column base component (7) comprises a column base shearing-resistant force transmission cylinder (3-1), column base anchoring communication holes (3-2), a lower column connecting plate (3-3) and column connecting bolt holes (3-4) of the column base component, the column base component is integrally in a square column shape, column base anchoring communication holes (3-2) are respectively formed in four side walls of a cylinder body of the column base shearing-resistant force transmission cylinder (3-1), bent portions are inwards arranged in the column base anchoring communication holes (3-2), the column base anchoring communication holes (3-2) on adjacent side surfaces are arranged in a staggered mode, the width of the column base anchoring communication holes (3-2) is not more than one third of the width of the side surfaces of the column base shearing-resistant force transmission cylinder (3-1), and the lower column connecting plate which is vertically arranged with the column base shearing-resistant force transmission cylinder (3-1) and extends outwards in an integrated mode below the column base shearing-resistant force transmission cylinder (3-1) (3-3), column connecting bolt holes (3-4) of column foot components are arranged at four corners of the lower column connecting plate (3-3), the column foot anchoring communication holes (3-2) and the column head anchoring communication holes (2-2) are all cut or cut holes of a raw plate, the column foot anchoring communication holes are formed by bending the column foot anchoring communication holes 90 degrees inwards after being cut from the side face of the force transmission cylinder, the embedded ends of the column head component embedded ends (3) and the column foot anti-shearing force transmission cylinder (3-1) are connected with column stress main ribs (5) in the precast concrete column in a welding mode, and the column foot anti-shearing force transmission cylinder is bound through column stirrups (8) and then poured into the integral concrete column.
2. A fabricated concrete column according to claim 1, characterized in that: the cutting or cutting line is H,
And the inner bending radius is not less than one half of the thickness of the plate, and the inner bending length is 1.5 times of the thickness of the steel plate.
3. A fabricated concrete column according to claim 2, characterized in that: when the cutting line is H-shaped, the cutting line comprises an H-shaped vertical cutting line (1-1) and a H-shaped horizontal cutting line (1-2), an upper rectangular bending part and a lower rectangular bending part (1-3) are formed on the side surface of the shear-resistant force transmission cylinder after cutting along the vertical cutting line (1-1) and the horizontal cutting line (1-2), and the two rectangular bending parts (1-3) are inwards bent by 90 degrees along the horizontal bending lines (1-4) at the upper end and the lower end of the rectangular bending parts to form an anchoring communication hole.
4. A fabricated concrete column according to claim 2, characterized in that: the cutting line is
When forming, comprises
The novel anchoring communication hole is characterized in that the novel anchoring communication hole is formed by a diagonal cutting line (1-5) and a middle transverse cutting line (1-6), wherein triangular bending parts I (1-7) on the left side and the right side and trapezoidal bending parts (1-8) on the upper side and the lower side are formed on the side surface of the shear-resistant force transmission cylinder after the novel anchoring communication hole is cut along the diagonal cutting line (1-5) and the middle transverse cutting line (1-6), and the triangular bending parts I (1-7) and the trapezoidal bending parts (1-8) are bent inwards by 90 degrees along a vertical bending line (1-11) and a transverse bending line (1-4) respectively to form an anchoring communication hole.
5. A fabricated concrete column according to claim 2, characterized in that: when the cutting line is in an X shape, the cutting line comprises an X-shaped diagonal oblique cutting line (1-9), four triangular bending parts II (1-10) are formed on the side surface of the shear-resistant force transmission cylinder after the diagonal oblique cutting line (1-9) is cut, the four triangular bending parts II (1-10) are bent inwards for 90 degrees along a vertical bending line (1-11) and a transverse bending line (1-4) respectively, and an anchoring communication hole is formed.
6. A fabricated concrete column according to claim 1, characterized in that: the concrete columns are fixedly connected through bolts after being butted with lower column connecting plates (3-3) of column foot members (7) through column connecting plates (2-8) of column head members (1).
7. A fabricated concrete column according to claim 1, characterized in that: the column cap shearing-resistant force-transmitting cylinder (2-1) and the column foot shearing-resistant force-transmitting cylinder (3-1) are made of steel plates and section steel materials, the section size and the material thickness of the column cap shearing-resistant force-transmitting cylinder are determined by calculation according to the section size of the column and the born internal force, and the sections are in a shape like a Chinese character kou or an X or a well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023046549.4U CN215406927U (en) | 2020-12-17 | 2020-12-17 | Assembled concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023046549.4U CN215406927U (en) | 2020-12-17 | 2020-12-17 | Assembled concrete column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215406927U true CN215406927U (en) | 2022-01-04 |
Family
ID=79637270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023046549.4U Active CN215406927U (en) | 2020-12-17 | 2020-12-17 | Assembled concrete column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215406927U (en) |
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2020
- 2020-12-17 CN CN202023046549.4U patent/CN215406927U/en active Active
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