CN212271698U - Quick detach aluminum mould board bearing structure - Google Patents
Quick detach aluminum mould board bearing structure Download PDFInfo
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- CN212271698U CN212271698U CN202021770467.1U CN202021770467U CN212271698U CN 212271698 U CN212271698 U CN 212271698U CN 202021770467 U CN202021770467 U CN 202021770467U CN 212271698 U CN212271698 U CN 212271698U
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Abstract
The utility model relates to the field of building templates, and discloses a quick-release aluminum template supporting structure, which comprises a first supporting rod, a second supporting rod, a fixed ring and a fine adjustment nut, wherein a plurality of first radial through holes are distributed on the first supporting rod, an axial tube cavity is arranged on the upper part of the second supporting rod, the first supporting rod is connected in the axial tube cavity in a sliding way, a plurality of first radial through holes are exposed in strip-shaped through holes on the second supporting rod, the fixed rod can be selected from the exposed first radial through holes and inserted, the fixed rod exposes two ends in the first supporting rod, the fixed ring is provided with a pair of supporting grooves for supporting two exposed ends of the fixed rod, the supporting grooves comprise groove walls for preventing the fixed rod from moving along the axial direction, an external thread piece matched with the fine adjustment nut is arranged on the outer wall of the second supporting rod, the fine adjustment nut is screwed on, the fine adjustment of the supporting height of the beam and the laminated plate is realized, and the construction speed and the construction quality are improved.
Description
Technical Field
The utility model relates to a building templates field especially relates to a quick detach aluminum mould board bearing structure.
Background
In the prior art, with the improvement of construction technology and construction level, the quality requirement of people on the finished products of buildings is higher and higher, the surfaces of the finished products of aluminum formwork construction are smooth, the finished products can be used as facing concrete, and the reutilization degree is high. The aluminum formwork supporting member is an important component of safety and construction convenience, the conventional supporting member needs to be designed into various supporting heights according to different supporting height requirements, fine adjustment of perpendicularity and height cannot be performed, construction speed and construction quality are seriously affected, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a unified supporting component of quick detach aluminum mould board bearing structure has realized the fine setting to the support height of roof beam and coincide board, improves construction speed and construction quality, improves the overall social of prefabricated construction. The utility model discloses a realize through following technical scheme:
a quick-release aluminum formwork supporting structure comprises a first supporting rod, a second supporting rod, a fixing ring and a fine adjustment nut, wherein the top of the first supporting rod is connected with a strip-shaped aluminum formwork for supporting a laminated slab, a plurality of first radial through holes are distributed in the first supporting rod, an axial pipe cavity is arranged at the upper part of the second supporting rod, the lower part of the first supporting rod is connected in the axial pipe cavity of the second supporting rod in a sliding manner, longitudinal strip-shaped through holes are formed in the second supporting rod, a plurality of first radial through holes are exposed in the strip-shaped through holes, the fixing rod can be inserted into one of the first radial through holes from the strip-shaped through holes, the length of the fixing rod is larger than the diameter of the first supporting rod, two ends of the fixing rod are exposed, the fixing ring is freely connected with the second supporting rod, and the outer diameter of the fixing ring is, the fixing ring is provided with a pair of supporting grooves for supporting two exposed ends of the fixing rod, each supporting groove comprises a groove wall for preventing the fixing rod from axially moving along the first radial through hole, an external thread piece matched with the fine adjustment nut is arranged in the height range of the strip-shaped through hole on the outer wall of the second supporting rod, and the fine adjustment nut is screwed on the external thread piece to fasten or loosen the fixing ring; when the fixing ring is loosened by turning the fine adjustment nut, the fixing rod may be drawn out to be replaced with the first radial through hole of one height, and when the fixing ring is fastened by turning the fine adjustment nut, the fixing rod may be fastened in the first radial through hole of one height that has been selected by force transmission through the fixing ring.
Preferably, the outer wall of the fine adjustment nut is cylindrical, and the outer diameter of the fixing ring is equal to that of the fine adjustment nut.
Preferably, the outer wall of the fine adjustment nut is provided with a knurling pattern.
Preferably, the external thread member on the outer wall of the second support rod within the height range of the strip-shaped through hole is a screw thread.
Preferably, the first radial through holes are uniformly distributed on the first support rod.
Preferably, the first support bar is provided with a height longitudinally higher than the second support bar.
Preferably, the quick-release aluminum formwork support structure further comprises a connector shaped like a Chinese character 'ji' for being sleeved on the strip-shaped aluminum formwork, the shape of the cavity of the n-shaped connector is adapted to the shape of the strip-shaped aluminum template, the upper part of the first supporting rod is provided with a shaft shoulder for supporting the supporting legs at two sides of the n-shaped connector, the first supporting rod comprises a small column positioned above the shaft shoulder, a small column through hole is arranged on the bottom pipe wall of the strip-shaped aluminum template, the small column penetrates into the strip-shaped aluminum template from the small column through hole, a second quick-release connecting rod is arranged between the bottom support legs of the n-shaped connector in a penetrating way, the second quick-release connecting rod is positioned on the outer sides of the two support legs, one of the second quick-release connecting rod is provided with a second axial limiting block, the other one of the second quick-release connecting rod is provided with a second quick-release hole, and a second triangular wedge which can be wedged into the second quick-release hole is used for quick-release fixing.
Preferably, the pipe walls of the two side surfaces and the pipe wall of the top part of the strip-shaped aluminum template are also provided with small column through holes.
Preferably, the support device further comprises a base, and the bottom of the second support rod is rotatably connected with the base through a spherical hinge.
The beneficial effects are that: compared with the prior art, the utility model discloses unified supporting component has realized the fine setting to roof beam and coincide board support height, improves construction speed and construction quality, improves the whole social of prefabricated construction.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic isometric view of an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a front view of an embodiment of the middle and quick-release aluminum shuttering supporting structure of the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a front view of an embodiment of an independent supporting component of the middle and quick-release aluminum shuttering supporting structure of the present invention;
fig. 6 is a schematic perspective view of an independent supporting component of the quick-release aluminum formwork supporting structure connected to a strip-shaped aluminum formwork through a connector shaped like a Chinese character ji in an embodiment of the present invention;
FIG. 7 is a partial enlarged view of portion A of FIG. 6;
fig. 8 is a schematic view illustrating the installation of the first support rod, the u-shaped connector and the strip-shaped aluminum mold plate according to the embodiment of the present invention;
FIG. 9 is a perspective view of a connecting head shaped like a Chinese character 'ji' in an embodiment of the present invention;
fig. 10 is a schematic cross-sectional view (exploded view) of the base of the second support rod in an embodiment of the present invention;
fig. 11 is a schematic perspective view of an aluminum alloy corner formwork structure of a beam in an embodiment of the present invention;
fig. 12 is an installation diagram of the corner mold plate and the first quick release connecting rod according to the embodiment of the present invention;
FIG. 13 is a schematic cross-sectional view of FIG. 12;
fig. 14 is a schematic perspective view of a template unit in an embodiment of the present invention;
fig. 15 is a partial enlarged view of a portion B of fig. 11;
FIG. 16 is a schematic view of the assembly of the first female connection corner spliced between the stiffeners and the first male connection corner of the corner form for the male corner of the beam;
FIG. 17 is an exploded view of FIG. 16;
FIG. 18 is a schematic view of the assembly of the first female connection corner spliced between the reinforcement ribs and the first male connection corner of the corner form for the female corner of the beam;
FIG. 19 is an exploded view of FIG. 18;
wherein the reference numerals are:
a beam 1; a laminated slab 2; the flat head early-dismantling supporting structure 3 a; a quick-release aluminum template supporting structure 3 b; the first support rod 31; a first radial through hole 310; a shoulder 311; a small post 312; a second support bar 32; a strip-shaped through-hole 320; a fixing lever 33; a fixed ring 34; a supporting groove 340; the cell walls 341; a fine adjustment nut 35; a strip aluminum template 361; pillar penetration holes 3610; a panel seam template 362; a connecting head 37 shaped like a Chinese character 'ji'; a leg 370; a second quick release connecting rod 38; a second axial stop block 380; a second triangular wedge 381; a base 39; an upper spherical hinge 391; a lower spherical hinge 392; a corner template 4; a first tube wall 41; a second tube wall 42; a third tube wall 43; a fourth tube wall 44; a second through hole 45; a first quick release connecting rod 5; a first axial stopper 51; a first quick release hole 52; a first triangular wedge 53; a template unit 6; reinforcing ribs 61; an abutment surface 611; a locking surface 612; a first through-hole 613.
Detailed Description
As shown in fig. 1-19, a quick-release aluminum shuttering supporting structure is included in a laminated slab early-release aluminum shuttering system, which further includes an aluminum alloy angle shuttering structure for a beam, and a flat-head early-release supporting structure 3a for an aluminum alloy angle shuttering structure for a supporting beam.
As shown in fig. 11 to 19, the aluminum alloy angle formwork structure of the beam comprises a formwork body, a corner formwork 4 and a first quick-release connecting rod 5, wherein the formwork body comprises a plurality of formwork units 6 for enclosing a casting cavity of the beam 1, the formwork units 6 adopt 65-type aluminum formworks and have panel thickness of 4 mm, and TIG or MIG welding reinforcing ribs 61 are vertically adopted at the outer edges of the formwork units 6. The external corner C1 of the beam 1 is formed by splicing two mutually perpendicular formwork units 6 at the position of an external corner C1 of the beam 1, and a first connecting internal corner C2 is spliced between the reinforcing ribs 61 on the formwork units 6, generally speaking, C1= C2=90 °; at the position of the internal corner D1 of the beam 1, the internal corner D1 of the beam 1 is formed by splicing two mutually perpendicular formwork units 6, and a first connecting internal corner D2 is spliced between the reinforcing ribs 61 on the formwork units 6, generally speaking, D1= D2=90 °. The surface of the reinforcing rib 61 facing the first female connection corner is referred to as an abutment surface 611, the surface facing away from the first female connection corner is referred to as a locking surface 612, and a plurality of first through holes 613 are formed between the abutment surface 611 and the locking surface 612. The corner template 4 is a square aluminum alloy tube formed by sequentially connecting a first tube wall 41, a second tube wall 42, a third tube wall 43 and a fourth tube wall 44, and preferably has a square cross section, a first connection external corner C3 is provided between the adjacent first tube wall 41 and the fourth tube wall 44, and generally, C3= C1= C2= D1= D2=90 °. A plurality of second through holes 45 are formed in each of the first pipe wall 41 and the fourth pipe wall 44, the first connecting male corner of the corner template 4 is attached to the two adjacent surfaces 611 on the first connecting female corner, and the first through hole 613 is communicated with the second through holes 45; a first axial limiting block 51 located in the corner template 4 is arranged at one end of the first quick-release connecting rod 5, when the other end of the first quick-release connecting rod 5 freely passes through the corresponding second through hole 45 from the first tube wall 41 and freely passes through the corresponding locking surface 612 from the corresponding first through hole 613, a first quick-release hole 52 is arranged on the first quick-release connecting rod 5, a certain length is arranged on the first quick-release hole 52 in the axial direction of the first quick-release connecting rod 5, and one end of the first quick-release hole 52 close to the first axial limiting block 51 is lower than the locking surface 612, as shown in fig. 16, a distance M is arranged; one end of the first quick release hole 52 away from the first axial limiting block 51 is higher than the locking surface 612, and as shown in fig. 16, a distance N is provided; after the first triangular wedge 53 is wedged into the first quick release hole 52 on the locking surface 612, the first axial limiting block 51 and the first triangular wedge 53 fasten the first pipe wall 41 and the corresponding reinforcing rib 61; when the other end of the first quick release connecting rod 5 freely passes through the corresponding second through hole 45 from the fourth tube wall 44 and freely passes through the corresponding locking surface 612 from the corresponding first through hole 613, the first quick release connecting rod 5 is provided with a first quick release hole 52, after the first triangular wedge 53 is wedged into the first quick release hole 52 on the locking surface 612, the fourth tube wall 44 and the corresponding reinforcing rib 61 are fastened between the first axial limiting block 51 and the first triangular wedge 53, the reinforcing rib 61 and the corresponding corner formwork 4 are fastened into a rigid body, the formwork units 6 which are perpendicular to each other are rigidly connected, and the above components and the installation mode can be used for both the internal corner and the external corner of the beam 1, so that the universality of the components is greatly improved. The same components are adopted to assemble the structures of the internal corner and the external corner of the beam 1, the universality of the components is greatly improved, the construction speed and the construction quality are improved, and the overall social benefit of the prefabricated structure is improved.
TIG or MIG welding is inert gas shielded welding in the prior art, and the welding mode is not described any more.
As shown in fig. 1 to 8, each of the flat head early-dismantling supporting structure 3a and the quick-dismantling aluminum formwork supporting structure 3b includes a first supporting rod 31, a second supporting rod 32, a fixing rod 33, a fixing ring 34 and a fine adjustment nut 35, a plurality of first radial through holes 310 are disposed on the first supporting rod 31, an axial lumen is disposed on the upper portion of the second supporting rod 32, the lower portion of the first supporting rod 31 is slidably connected in the axial lumen of the second supporting rod 32, a longitudinal strip-shaped through hole 320 is disposed on the second supporting rod 32, a plurality of first radial through holes 310 are exposed in the strip-shaped through hole 320, the fixing rod 33 can be inserted into one of the first radial through holes 310 from the strip-shaped through hole 320, the length of the fixing rod 33 is greater than the diameter of the first supporting rod 31 and two ends are exposed, the fixing ring 34 is freely connected with the second supporting rod 32, the outer diameter of the fixing ring 34 is larger than the length of the fixing rod 33, the fixing ring 34 is provided with a pair of supporting grooves 340 for supporting two exposed ends of the fixing rod 33, the supporting grooves 340 are located in the diameter direction of the two exposed ends of the fixing rod 33, each supporting groove 340 comprises a groove wall 341 for preventing the fixing rod 33 from moving axially along the first radial through hole 310, the outer wall of the second supporting rod 32 is provided with a screw thread corresponding to the fine adjustment nut 35 within the height range of the strip-shaped through hole 320, the fine adjustment nut 35 is screwed on the external thread member to fasten or unfasten the fixing ring 34, when the fine adjustment nut 35 is screwed to unfasten the fixing ring 34, the fixing rod 33 can be pulled out to replace the first radial through hole 310 with a proper height, when the fine adjustment nut 35 is screwed to fasten the fixing ring 34, the height adjustment of the flat head early-dismantling support structure 3a or the quick-dismantling aluminum formwork support structure 3b can be realized by means of force transmission through the fixing ring 34 and fastening the fixing rod 33 in the first radial through hole 310 with a selected proper height. The universality is strong; and meanwhile, the fine adjustment of the supporting height of the beam 1 and the laminated slab 2 is realized.
In a preferred embodiment, the flat-head early-dismantling support structure 3a further includes a flat-head aluminum formwork (not shown) abutting against the formwork unit 6 at the bottom of the beam 1, the flat-head aluminum formwork has a horizontal width avoiding the corner formwork 4, and generally, the width of the flat-head aluminum formwork is half of a hole distance S (shown in fig. 16) of the first through hole 613 on the reinforcing rib 61, so as to increase the versatility of the corner formwork 4 at the connection portion.
In a preferred embodiment, the width of the abutting surface 611 and the locking surface 612 of the reinforcing rib 61 on the form unit 6 is W, the width of the first pipe wall 41, the width of the second pipe wall 42, the width of the third pipe wall 43, and the width of the fourth pipe wall 44 on the corner form 4 are also W, and the value of W is 65 mm.
As shown in fig. 16-19, the length L of the first quick release connecting rod 5 is greater than the cross-sectional width W of the corner form 4, so that the first quick release connecting rod 5 remains on the corner form 4 and cannot be pulled out of the first pipe wall 41 or the fourth pipe wall 44.
Preferably, the first quick release hole 52 penetrates through two ends of the first quick release connecting rod 5 in the diameter direction, so as to facilitate quick locking.
As shown in fig. 4, the horizontal distance X between the flat head early-dismantling support structures 3a, between the first support rods 31, and between the flat head early-dismantling support structures 3a and the first support rods 31 is 1200 mm, that is, the various support rods are arranged in a matrix of 1200 mm × 1200 mm, so as to construct a reasonable and economical support structure.
As shown in fig. 1-9, the quick-release aluminum mold plate supporting structure 3b includes a bar-shaped aluminum mold plate 361 and a n-shaped connector 37 sleeved on the bar-shaped aluminum mold plate 361, the bottom of the n-shaped connector 37 is in an open shape, the shape of the cavity of the n-shaped connector 37 is adapted to the shape of the bar-shaped aluminum mold plate 361, the upper portion of the first supporting rod 31 is provided with a shaft shoulder 311 for supporting two side supporting legs 370 of the n-shaped connector 37, the first supporting rod 31 includes a small column 312 located above the shaft shoulder 311, a small column through hole 3610 is formed in the bottom tube wall of the bar-shaped aluminum mold plate 361, the small column 312 penetrates into the bar-shaped aluminum mold plate 361 from the small column through hole 3610, a second quick-release connecting rod 38 penetrates between the bottom supporting legs 370 of the n-shaped connector 37, and the second quick-release connecting rod 38 is located at two outer, One of the two quick-release holes is provided with a second axial limiting block 380, and the other quick-release hole is provided with a second triangular wedge 381 which can be wedged into the second quick-release hole for quick-release fixation.
As shown in fig. 4, the strip-shaped aluminum templates 361 are arranged at a certain horizontal distance, every two strip-shaped aluminum templates 361 are fixed by a welded plate joint template 362, the horizontal distance X between the support rod assemblies of the quick-release aluminum template support structure 3b can be used as a reference, and the horizontal distance between two adjacent strip-shaped aluminum templates 361 is 1200 mm.
As shown in fig. 1 and 2, the strip-shaped aluminum templates 361 are arranged at a certain horizontal distance, and every two strip-shaped aluminum templates 361 are fixed by a welded plate joint template 362 to reinforce the lateral supporting force between the strip-shaped aluminum templates 361.
Preferably, the outer wall of fine adjustment nut 35 is cylindric, the external diameter of solid fixed ring 34 equals fine adjustment nut 35's external diameter, the protection helicitic texture in the handling of being convenient for prevents the impact.
Preferably, the outer wall of the fine adjustment nut 35 is provided with a knurling pattern, so that the fine adjustment nut is convenient to rotate and operate.
Preferably, the first radial through holes 310 are uniformly distributed on the first supporting rod 31, so that adjustment according to the number of holes is facilitated, and operation is facilitated.
Preferably, the pipe walls of the two side surfaces and the pipe wall of the top part of the strip-shaped aluminum template 361 are also provided with the pillar through holes 3610, so that an operator does not need to confirm the direction of each pipe wall, and the operation time is saved.
As shown in fig. 10, the support device further includes a base 39, the bottom of the second support rod 32 is rotatably connected to the base 39 through a spherical hinge, the spherical hinge structure is a structure in the prior art, and includes an upper spherical hinge 391, a lower spherical hinge 392 and a rotating shaft, the bottom of the upper spherical hinge 391 protrudes downward, the upper surface of the lower spherical hinge 392 is in a groove shape, the rotating shaft is arranged between the upper spherical hinge 391 and the lower spherical hinge 392, and the bottom of the second support rod 32 is welded to the top of the upper spherical hinge 391, so that the support verticality can be finely adjusted, and different engineering requirements can be met.
Preferably, the base 39 is provided with at least three through holes for installing anchor bolts, and the base 39 is fixedly arranged on the ground or floor through the anchor bolts.
The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent variations made by using the contents of the specification and the drawings are included in the scope of the present invention.
Claims (9)
1. A quick-release aluminum formwork supporting structure is characterized by comprising a first supporting rod, a second supporting rod, a fixing ring and a fine adjustment nut, wherein the top of the first supporting rod is connected with a strip-shaped aluminum formwork for supporting a laminated slab, a plurality of first radial through holes are distributed in the first supporting rod, an axial pipe cavity is formed in the upper portion of the second supporting rod, the lower portion of the first supporting rod is connected into the axial pipe cavity of the second supporting rod in a sliding mode, longitudinal strip-shaped through holes are formed in the second supporting rod, a plurality of first radial through holes are exposed in the strip-shaped through holes, the fixing rod can be inserted into one of the first radial through holes from the strip-shaped through holes, the length of the fixing rod is larger than the diameter of the first supporting rod, two ends of the fixing rod are exposed, the fixing ring is freely connected with the second supporting rod, and the outer diameter of the fixing ring is larger, the fixing ring is provided with a pair of supporting grooves for supporting two exposed ends of the fixing rod, each supporting groove comprises a groove wall for preventing the fixing rod from axially moving along the first radial through hole, an external thread piece matched with the fine adjustment nut is arranged in the height range of the strip-shaped through hole on the outer wall of the second supporting rod, and the fine adjustment nut is screwed on the external thread piece to fasten or loosen the fixing ring; when the fixing ring is loosened by turning the fine adjustment nut, the fixing rod may be drawn out to be replaced with the first radial through hole of one height, and when the fixing ring is fastened by turning the fine adjustment nut, the fixing rod may be fastened in the first radial through hole of one height that has been selected by force transmission through the fixing ring.
2. The quick-release aluminum formwork support structure according to claim 1, wherein the outer wall of the fine adjustment nut is cylindrical, and the outer diameter of the fixing ring is equal to the outer diameter of the fine adjustment nut.
3. The quick-release aluminum formwork support structure as claimed in claim 1, wherein the fine adjustment nut has knurling on its outer wall.
4. The quick-release aluminum formwork support structure according to claim 1, wherein the external thread member on the outer wall of the second support rod within the height range of the strip-shaped through hole is a screw thread.
5. The quick-release aluminum formwork support structure according to claim 1, wherein the first radial through holes are uniformly distributed on the first support rod.
6. The quick-release aluminum formwork support structure according to claim 1, wherein the first support bar is provided with a height that is longitudinally higher than the second support bar.
7. The quick-release aluminum formwork support structure of claim 6, further comprising a connector shaped like a Chinese character 'ji' for being sleeved on the strip-shaped aluminum formwork, the shape of the cavity of the n-shaped connector is adapted to the shape of the strip-shaped aluminum template, the upper part of the first supporting rod is provided with a shaft shoulder for supporting the supporting legs at two sides of the n-shaped connector, the first supporting rod comprises a small column positioned above the shaft shoulder, a small column through hole is arranged on the bottom pipe wall of the strip-shaped aluminum template, the small column penetrates into the strip-shaped aluminum template from the small column through hole, a second quick-release connecting rod is arranged between the bottom support legs of the n-shaped connector in a penetrating way, the second quick-release connecting rod is positioned on the outer sides of the two support legs, one of the second quick-release connecting rod is provided with a second axial limiting block, the other one of the second quick-release connecting rod is provided with a second quick-release hole, and a second triangular wedge which can be wedged into the second quick-release hole is used for quick-release fixing.
8. The quick-release aluminum formwork support structure of claim 7, wherein the two side wall surfaces and the top wall surface of the strip-shaped aluminum formwork are also provided with small column through holes.
9. The quick-release aluminum formwork support structure according to claim 1, further comprising a base, wherein the bottom of the second support rod is rotatably connected with the base through a spherical hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021770467.1U CN212271698U (en) | 2020-08-21 | 2020-08-21 | Quick detach aluminum mould board bearing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021770467.1U CN212271698U (en) | 2020-08-21 | 2020-08-21 | Quick detach aluminum mould board bearing structure |
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| CN212271698U true CN212271698U (en) | 2021-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719116A (en) * | 2021-09-15 | 2021-11-30 | 中国华西企业有限公司 | Laminated floor slab construction method based on aluminum alloy formwork support |
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2020
- 2020-08-21 CN CN202021770467.1U patent/CN212271698U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719116A (en) * | 2021-09-15 | 2021-11-30 | 中国华西企业有限公司 | Laminated floor slab construction method based on aluminum alloy formwork support |
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