CN109914792B - Underground garage beam formwork construction method - Google Patents
Underground garage beam formwork construction method Download PDFInfo
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- CN109914792B CN109914792B CN201910256607.9A CN201910256607A CN109914792B CN 109914792 B CN109914792 B CN 109914792B CN 201910256607 A CN201910256607 A CN 201910256607A CN 109914792 B CN109914792 B CN 109914792B
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- 238000010276 construction Methods 0.000 title claims abstract description 41
- 238000009415 formwork Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 238000010408 sweeping Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 10
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- 238000009435 building construction Methods 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000009417 prefabrication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
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- 239000002023 wood Substances 0.000 description 2
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Abstract
The invention relates to an underground garage beam template construction method, which belongs to the technical field of building construction and comprises a stand column, a connecting rod and a plurality of mutually parallel and horizontally arranged square timbers, wherein a horizontal pull rod is horizontally and fixedly arranged on the stand column, the square timbers are arranged on the horizontal pull rod, the top walls of the square timbers are provided with connecting grooves, the connecting rod is connected with the connecting grooves in a sliding manner, the connecting rod is mutually vertical to the square timbers, the top walls of the connecting rods are not higher than the top walls of the square timbers, at least two connecting grooves are arranged along the length direction of the square timbers, the connecting rod is provided with limiting parts for limiting the positions of the square timbers, and the. During construction, the intervals of the adjacent limiting parts are equal, so that the adjacent square timbers are kept in a state of being parallel to each other and equal in interval, the beam bottom formwork is guaranteed to be stressed uniformly, the horizontality of the beam bottom formwork is improved, and the purpose of improving the construction quality of the beam is achieved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of an underground garage beam template.
Background
Along with the development of society, the vehicle is more and more, and the parking stall is also more and more nervous, and underground garage is also more and more general correspondingly, and the roof beam is an important structure of underground garage. The beam is a member which bears vertical load and mainly bends. The beams are generally horizontally disposed to support the panels and to bear various vertical loads from the panels and the deadweight of the beams, which together form the floor and roof structure of the building.
The beam template comprises a beam bottom template, a beam end template and two beam side templates. At present, when the beam formwork is constructed, a steel pipe needs to be built firstly as a support, then a plurality of square timbers are parallel to each other and are arranged on a horizontal rod at the top of the support at equal intervals, then a bottom plate is laid on the square timbers of the plurality of square timbers, then a beam end formwork and two beam side formworks are arranged to form an open top structure, the periphery of the open top structure is closed, and concrete is poured at last.
During construction, in order to reduce the deflection of the beam bottom formwork, ensure the even stress of the beam bottom formwork and the horizontality of the beam bottom formwork, and improve the stability of the beam after concrete pouring, the adjacent square timbers are required to be ensured to be parallel to each other and have equal intervals. However, in actual construction, usually, whether two battens are parallel and whether the distance between the two battens is equal are judged by naked eyes of workers, and the battens are installed at will. Especially for inexperienced workers, the parallel and equal spacing of the battens is difficult to ensure, and the construction quality of the beam is affected.
Disclosure of Invention
One of the purposes of the invention is to provide a supporting structure for a beam formwork of an underground garage, which has the advantages of being convenient for controlling adjacent square timbers to be parallel to each other and have equal intervals and improving the construction quality of the beams.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides an underground garage roof beam template bearing structure, includes stand, connecting rod and a plurality of square timber that are parallel to each other and the level sets up, the stand is improved level and is fixed to be provided with horizontal pull rod, square timber sets up on horizontal pull rod, the spread groove has been seted up to the roof of square timber, the connecting rod slides with the spread groove and is connected, connecting rod and square timber mutually perpendicular, the roof of connecting rod is not higher than the roof of square timber, the spread groove sets up two at least along square timber length direction, be provided with the locating part that is used for injecing the square timber position on the connecting rod, the locating part sets up a plurality ofly along the even interval of connecting rod length direction.
When the technical scheme is implemented, the square timber is arranged on the horizontal pull rod during construction, the connecting rod is embedded into the connecting groove of each square timber, and the position of each square timber is limited by the limiting piece so as to prevent the square timber from shifting; the interval of adjacent locating part equals to guarantee that adjacent square timber keeps the state that is parallel to each other and the interval equals, guarantee that roof beam die block board atress is even, improve roof beam die block board's horizontality, realize improving the purpose of the construction quality of roof beam.
The invention is further configured to: spacing hole has been seted up to the diapire of spread groove, the connecting rod has seted up the mounting hole along vertical direction through connection pole, the mounting hole sets up a plurality ofly along the even interval of connecting rod length direction, the locating part is used for inserting the bolt in order to inject the square timber position in the spacing hole for wearing to locate in the mounting hole, the roof of bolt is not higher than the roof of square timber.
When the technical scheme is implemented, a plurality of square timbers are approximately placed in parallel during construction, then the positions of the square timbers are properly adjusted according to the positions of the bolts, so that the bolts are inserted into the limiting holes, the square timbers are connected into a whole, the equal distance between the square timbers is ensured, the uniform stress of the bottom formwork of the beam is ensured, and the purpose of improving the construction quality of the beam is realized; and the roof of bolt is not higher than the roof of square timber, can guarantee roof beam die block board and square timber laminating, guarantees roof beam die block board's horizontality.
The invention is further configured to: offer on the connecting rod and link up the mounting groove to the mounting hole, the opening of mounting groove is greater than the aperture of mounting hole, the cell wall slope of mounting groove sets up, and the notch area of mounting groove is greater than groove basal area, the bolt includes spacing platform, spacing platform is located the mounting groove and the lateral wall of mounting groove supports tightly.
When the technical scheme is implemented, when the connecting rod is embedded into the connecting groove during installation, the plug pin is inserted into the limiting hole, and the limiting table is tightly abutted against the mounting groove to prevent the plug pin from loosening; when needing to dismantle, can remain the bolt in the mounting hole, and spacing platform and mounting groove cooperation can prevent that the bolt from losing, are convenient for use next time.
The invention also aims to provide a construction method of the underground garage beam template, which has the advantages of convenient construction and improvement of the construction quality of the beam.
The technical purpose of the invention is realized by the following technical scheme:
a construction method of a beam template of an underground garage comprises the following steps:
s1, constructing a supporting structure, namely, taking a fastener type steel pipe as a supporting upright post, arranging horizontal pull rods on the upright post along the longitudinal direction and the transverse direction, and distributing a plurality of horizontal pull rods along the height direction of the upright post;
s2, mounting beam bottom ridges, arranging a plurality of square timbers in parallel on the horizontal pull rod on the uppermost layer of the upright post to enable the distance between every two adjacent square timbers to be equal, then mounting a connecting rod, embedding the connecting rod into the connecting groove of each square timber, and inserting a bolt into the limiting hole to enable the square timbers to be kept in a state of being parallel to each other and equal in distance;
s3, mounting a beam bottom template, and arranging the beam bottom template on a plurality of square timbers;
s4, binding steel bars;
s5, mounting beam side templates, wherein the beam side templates and the beam end templates are respectively arranged on the side surfaces and the end surfaces of the beam bottom template, and the beam bottom template, the beam end templates and the beam side templates form an opening structure with an opening at the top end, the periphery and the bottom closed;
s6, clamping rods are respectively arranged on two side faces of the opening structure, and an installation space is reserved between each clamping rod and the corresponding side face of the opening structure;
s7, mounting a horizontal back edge, and clamping the horizontal back edge between the clamping rod and the beam side template through a counter-pulling screw rod;
and S8, pouring concrete.
According to the technical scheme, the fastener type steel pipes are used as the supporting upright columns, the horizontal pull rods are arranged on the upright columns in the longitudinal and transverse directions, and the horizontal pull rods are distributed along the height direction of the upright columns in multiple ways, so that the stability of the upright columns is improved; and then, arranging a plurality of square timbers in parallel on the horizontal pull rod on the uppermost layer of the upright column to ensure that the distance between every two adjacent square timbers is equal, then installing a connecting rod, embedding the connecting rod into the connecting groove of each square timbers, and inserting a bolt into the limiting hole to ensure that the square timbers are kept in a state of being parallel to each other and the distance is equal. Arranging a beam bottom template on a plurality of square timbers, and binding reinforcing steel bars; the side surface and the end surface of the beam bottom template are respectively provided with a beam side template and a beam end template, and the beam bottom template, the beam end template and the beam side template form an opening structure with an opening at the top end, a closed periphery and a closed bottom; two side surfaces of the opening structure are respectively provided with a clamping rod, and an installation space is reserved between the clamping rod and the side surface of the opening structure. Through to drawing the stupefied centre gripping of level back of the body the steel pipe with between the roof beam side form board, pour the concrete in to open structure at last, construction convenience, and the connecting rod plays the purpose of injecing the square timber position, guarantees that adjacent square timber keeps the state that is parallel to each other and the interval equals, guarantees that the roof beam die block board atress is even, improves the horizontality of roof beam die block board, realizes the purpose that improves the construction quality of roof beam.
The invention is further configured to: and when the beam bottom template is installed, performing beam bottom arching construction.
By implementing the technical scheme, the beam bottom is arched, so that the condition that a beam bottom template is too large in sagging in the pouring process of the beam, namely too large deflection in the building industry generally can be prevented, the beam can achieve the horizontal effect, and the construction quality of the beam is improved.
The invention is further configured to: the bottom of the steel tube upright post is provided with a skid and a base, the top of the upright post is provided with an adjustable support, if a gap exists between the U-shaped support and two sides of the stupefied beam, the U-shaped support and the stupefied beam are required to be wedged tightly, a screw rod of the U-shaped support extends out of the top of the steel tube and is not more than 200mm, the gap between the outer diameter of the screw rod and the inner diameter of the steel tube upright post is not more than 3 mm.
Implement above-mentioned technical scheme, the setting of lumber skid and base plays the effect of the load of dispersion stand, reduces the stand to the pressure on ground, prevents the ground damage, improves the stability of stand, and with the U-shaped support bracket with stupefied roof beam both sides between the clearance wedge tight, prevent stupefied roof beam aversion, improve stability.
The invention is further configured to: a floor sweeping rod is arranged at the height of the bottom of the upright column, which is 200mm away from the ground, along the vertical and horizontal directions according to the vertical and horizontal programs.
Implement above-mentioned technical scheme, all independently support for considering the support post, have individual pole unstability to take place inevitably, so link into an entirety adjacent pole of sweeping the floor, form and drag the atress each other, horizontal pole of sweeping the floor is under vertical pole of sweeping the floor, through transmitting power to pole setting to basis, improves the stability of structure.
The invention is further configured to: a horizontal pull rod is arranged at the top end of the upright column at the bottom of the adjustable support along the longitudinal direction and the transverse direction, the distance between the floor sweeping rod and the horizontal pull rod at the top is evenly distributed to determine the step pitch under the condition of meeting the step pitch requirement of the horizontal pull rod determined by the template design, and then the horizontal pull rod is respectively arranged at each step pitch along the longitudinal direction and the transverse direction; when the layer height is 8-20 m, a horizontal pull rod is additionally arranged between the two horizontal pull rods at the topmost step distance.
By implementing the technical scheme, the step pitch is determined by average distribution under the condition of meeting the requirement of the step pitch of the horizontal pull rod determined by the template design, and the stability of the whole structure is improved.
In summary, compared with the prior art, the beneficial effects of the invention are as follows:
firstly, during construction, square timbers are arranged on a horizontal pull rod, connecting rods are embedded into connecting grooves of each square timber, and then the positions of the square timbers are limited through limiting pieces to prevent the square timbers from shifting; the intervals of the adjacent limiting parts are equal, so that the adjacent square timbers are kept in a state of being parallel to each other and equal in interval, the beam bottom formwork is uniformly stressed, the horizontality of the beam bottom formwork is improved, and the aim of improving the construction quality of the beam is fulfilled;
during installation, when the connecting rod is embedded into the connecting groove, the bolt is inserted into the limiting hole, and the limiting table is tightly abutted against the mounting groove to prevent the bolt from loosening; when the bolt is required to be disassembled, the bolt can be retained in the mounting hole, and the limiting table is matched with the mounting groove, so that the bolt can be prevented from being lost, and the bolt is convenient to use next time;
and thirdly, the arrangement of the skid and the base plays a role in dispersing the load of the stand column, reduces the pressure of the stand column to the ground, prevents the ground from being damaged, improves the stability of the stand column, wedges the gap between the U-shaped support bracket and the two sides of the stupefied beam, prevents the stupefied beam from shifting and improves the stability.
Drawings
FIG. 1 is a schematic plan view of the present invention in its entirety;
FIG. 2 is a schematic structural view of a portion of the structure of the present invention;
FIG. 3 is an exploded view of a portion of the structure of the present invention;
fig. 4 is an enlarged view of a portion a in fig. 3.
Reference numerals: 1. a column; 11. a horizontal pull rod; 12. wood padding; 13. a base; 14. a ground sweeping bar; 2. a connecting rod; 21. mounting holes; 22. mounting grooves; 3. square wood; 31. connecting grooves; 311. a limiting hole; 4. a bolt; 41. a limiting table; 5. an open structure; 51. a beam-side template; 52. a beam bottom template; 6. horizontal back ridges; 7. oppositely pulling the screw rod; 8. the clamping rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 and 2, an underground garage beam formwork supporting structure comprises a stand column 1, a connecting rod 2 and a plurality of square timbers 3 which are parallel to each other and horizontally arranged, wherein a horizontal pull rod 11 is fixedly arranged on the stand column 1 in a horizontal mode, the square timbers 3 are arranged on the horizontal pull rod 11, the stand column 1 and the horizontal pull rod 11 are steel pipes, and the steel pipes are built for fastener type steel pipes.
As shown in fig. 3 and 4, the connecting groove 31 has been seted up to the roof of square timber 3, and connecting rod 2 slides with connecting groove 31 and is connected, connecting rod 2 and square timber 3 mutually perpendicular, and the roof of connecting rod 2 is not higher than the roof of square timber 3, and connecting groove 31 sets up two along 3 length direction of square timber.
As shown in fig. 3 and 4, a limiting hole 311 has been seted up to the diapire of connecting groove 31, connecting rod 2 has been seted up mounting hole 21 along vertical direction through connecting rod 2, mounting hole 21 sets up a plurality ofly along the even interval of 2 length directions of connecting rod, is provided with the locating part that is used for injecing 3 positions of square timber on connecting rod 2, and the locating part is for wearing to locate in mounting hole 21 and being used for inserting bolt 4 in order to injecing 3 positions of square timber in limiting hole 311. Bolt 4 sets up a plurality ofly along 2 even intervals of length direction of connecting rod, and the roof of bolt 4 is not higher than the roof of square timber 3 to guarantee roof beam die block board 52 and the laminating of square timber 3, guarantee roof beam die block board 52's horizontality.
During construction, a plurality of square timbers 3 are approximately placed in parallel, then the positions of the square timbers 3 are properly adjusted according to the positions of the bolts 4, so that the bolts 4 are inserted into the limiting holes 311, the square timbers 3 are connected into a whole, the equal spacing between the square timbers 3 is ensured, the uniform stress of the beam bottom template 52 is ensured, and the purpose of improving the construction quality of the beam is realized; the intervals of the adjacent bolts 4 are equal, so that the adjacent square timbers 3 are ensured to be parallel to each other and have equal intervals, the beam bottom formwork 52 is ensured to be stressed uniformly, the levelness of the beam bottom formwork 52 is improved, and the purpose of improving the construction quality of the beam is achieved.
Wherein, as shown in fig. 3, 4, set up the mounting groove 22 that link up to mounting hole 21 on the connecting rod 2, mounting groove 22 is whole to be round platform shape, and the opening of mounting groove 22 is greater than the aperture of mounting hole 21, and the cell wall slope of mounting groove 22 sets up, and the notch area of mounting groove 22 is greater than the groove bottom area, and bolt 4 includes spacing platform 41, and spacing platform 41 is located mounting groove 22 and the lateral wall of mounting groove 22 supports tightly.
During installation, when the connecting rod 2 is embedded into the connecting groove 31, the bolt 4 is inserted into the limiting hole 311, and the limiting table 41 is tightly abutted against the mounting groove 22 to prevent the bolt 4 from loosening; when needing to dismantle, can remain bolt 4 in mounting hole 21, and spacing platform 41 and mounting groove 22 cooperation can prevent that bolt 4 from losing, are convenient for use next time.
The specific working process is as follows: during construction, a plurality of square timbers 3 are approximately placed in parallel, then the positions of the square timbers 3 are properly adjusted according to the positions of the bolts 4, so that the bolts 4 are inserted into the limiting holes 311, the square timbers 3 are connected into a whole, the equal spacing between the square timbers 3 is ensured, the uniform stress of the beam bottom template 52 is ensured, and the construction quality of the beam is improved; the intervals of the adjacent bolts 4 are equal, so that the adjacent square timbers 3 are ensured to be parallel to each other and have equal intervals, the beam bottom formwork 52 is ensured to be stressed uniformly, the levelness of the beam bottom formwork 52 is improved, and the purpose of improving the construction quality of the beam is achieved.
Example two:
as shown in fig. 1 and 2, a construction method of an underground garage beam formwork includes the following steps:
s1, constructing a supporting structure, namely, taking a fastener type steel pipe as a supporting upright post 1, arranging horizontal pull rods 11 on the upright post 1 along the longitudinal direction and the transverse direction, and distributing the horizontal pull rods 11 along the height direction of the upright post 1 for multiple times;
s2, mounting beam bottom edges, arranging a plurality of square timbers 3 in parallel on the horizontal pull rod 11 on the uppermost layer of the upright post 1 to enable the distance between every two adjacent square timbers 3 to be equal, then mounting a connecting rod 2, embedding the connecting rod 2 into the connecting groove 31 of each square timber 3 by combining the drawing 3, and inserting the inserted pin 4 into the limiting hole 311 to enable the square timbers 3 to be kept in the state of being parallel to each other and equal in distance;
s3, mounting the beam bottom template 52, and arranging the beam bottom template 52 on the plurality of square timbers 3;
s4, binding steel bars;
s5, mounting the beam side template 51, respectively arranging the beam side template 51 and a beam end template on the side surface and the end surface of the beam bottom template 52, wherein the beam bottom template 52, the beam end template and the beam side template 51 form an opening structure 5 with an opening at the top end, the periphery and the bottom closed;
s6, two side faces of the opening structure 5 are respectively provided with a clamping rod 8, and an installation space is reserved between the clamping rod 8 and the side face of the opening structure 5;
s7, mounting the horizontal back edge 6, and clamping the horizontal back edge 6 between the clamping rod 8 and the beam side template 51 through the opposite-pulling screw 7;
and S8, pouring concrete.
The fastener type steel pipe is used as a support upright post 1, horizontal pull rods 11 are arranged on the upright post 1 along the longitudinal direction and the transverse direction, and the horizontal pull rods 11 are distributed along the height direction of the upright post 1 for multiple times, so that the stability of the upright post 1 is improved; then, a plurality of square timbers 3 are arranged on the horizontal pull rod 11 on the uppermost layer of the upright post 1 in parallel to enable the distance between every two adjacent square timbers 3 to be equal, then the connecting rod 2 is installed, the connecting rod 2 is embedded into the connecting groove 31 of each square timber 3, the bolt 4 is inserted into the limiting hole 311, and the square timbers 3 are kept in a state of being parallel to each other and having equal distance.
Arranging the beam bottom template 52 on a plurality of square timbers 3, and binding reinforcing steel bars; the side surface and the end surface of the beam bottom template 52 are respectively provided with a beam side template 51 and a beam end template, and the beam bottom template 52, the beam end template and the beam side template 51 form an opening structure 5 with an opening at the top end, the periphery and the bottom closed; two side surfaces of the opening structure 5 are respectively provided with a clamping rod 8, the clamping rods 8 are steel pipes, and an installation space is reserved between the clamping rods 8 and the side surfaces of the opening structure 5. Through to drawing screw rod 7 with the stupefied 6 centre gripping of horizontal back of the body between clamping rod 8 and roof beam side form 51, pour the concrete in open structure 5 at last, construction convenience, and connecting rod 2 plays the purpose of injecing the square timber 3 position, guarantees that adjacent square timber 3 keeps the state that is parallel to each other and the interval equals, guarantees that roof beam die block 52 atress is even, improves the horizontality of roof beam bottom form 52, realizes improving the purpose of the construction quality of roof beam.
As shown in fig. 1 and 2, the bottom of the steel tube column 1 should be provided with a skid 12 and a base 13, which play a role in dispersing the load of the column 1, reduce the pressure of the column 1 on the ground, prevent the ground from being damaged, and improve the stability of the column 1. The top of the upright post 1 is provided with an adjustable support, if a gap exists between the U-shaped support and the two sides of the edge beam, the U-shaped support and the two sides of the edge beam are required to be wedged tightly, a screw rod of the U-shaped support extends out of the top of the steel pipe and is not larger than 200mm, the gap between the outer diameter of the screw rod and the inner diameter of the upright post 1 of the steel pipe is not larger than 3mm, and the upper. And the clearance between the U-shaped support and the two sides of the edge beam is wedged tightly, so that the edge beam is prevented from moving, and the stability is improved.
As shown in figure 1, a floor sweeping rod 14 is arranged at the height of 200mm from the ground at the bottom of the upright post 1 along the longitudinal, horizontal and vertical directions according to the program of longitudinal, downward and horizontal directions. In order to consider that the supporting upright posts 1 are all independently supported and individual pole instability is inevitable, the adjacent floor sweeping poles 14 are connected into a whole to form mutual dragging stress, the transverse floor sweeping pole 14 is arranged below the longitudinal floor sweeping pole 14, and the structural stability is improved by transmitting the force to the vertical pole to the foundation.
A horizontal pull rod 11 is arranged at the top end of the upright post 1 at the bottom of the adjustable support along the longitudinal direction and the transverse direction, and a horizontal pull rod 11 is respectively arranged at the longitudinal direction and the transverse direction of each step after the step pitch is determined by carrying out average distribution on the distance between the sweeping rod 14 and the horizontal pull rod 11 at the top under the condition of meeting the step pitch requirement of the horizontal pull rod 11 determined by the template design; when the layer height is 8-20 m, a horizontal pull rod 11 is additionally arranged between the two horizontal pull rods 11 at the topmost step distance.
When the bottom plate 52 is installed, the bottom arch is constructed. The beam bottom is arched, so that the beam bottom template 52 can be prevented from sagging too much in the pouring process of the beam, namely the deflection is too large in the building industry, the beam can achieve the horizontal effect, and the construction quality of the beam is improved.
Under the condition of meeting the step distance requirement of the horizontal pull rod 11 determined by the template design, the step distances are determined through average distribution, and the stability of the whole structure is improved.
When the template is manufactured, reasonable material distribution plan is required to be carried out according to the material size and the size of each component before blanking, the most economical and reasonable blanking and material distribution scheme and size are adopted, the plate distribution is carried out by the method of the least broken plates and leftover materials, and meanwhile, small blocks of materials and broken plates are arranged in the middle of the plate according to the plan; the template prefabrication takes the expansion factor of the cast concrete into consideration, and the size of each component is controlled to be minus 5mm for blanking; the prefabrication requires precise dimensions while minimizing the production of scrap. The template is repeatedly used and coated with the release agent, and the release agent cannot hinder decoration. The prefabrication quality requirement of the template is as follows: the template mainly prefabricates a column side die, a beam bottom die and a beam side die; each plate is required to be sawed and spliced to form according to the length (1830 mm) of the clamping plate, splicing is required to be tight, short wooden shelves are required to be controlled according to the designed interval, and prefabrication is finished and identification is required to be carried out so as to facilitate use during installation.
In S1, when the fastener type steel pipe is used as the support pillar 1, the installation structure thereof should meet the following specifications:
1. the specification, the spacing and the fasteners of the steel pipes meet the design requirements. The bottom of each upright post 1 is provided with a base 13 and a backing plate, and the thickness of the backing plate is not less than 50 mm.
2. The spacing of the steel pipe support upright columns 1, the sweeping rods 14, the horizontal pull rods 11 and the shear braces are arranged according to the regulations. When the bottoms of the upright posts 1 are not at the same height, the longitudinal floor sweeping rod 14 at the high position needs to extend to the low position for no less than two spans, the height difference is not more than 1m, and the distance between the upright posts 1 and the edge above the side slope is not less than 0.5 m.
3. The stand 1 increases strictly forbidden overlap joint, must adopt butt joint fastener to connect, and the butt joint of two adjacent stands 1 must not be in synchronous, and the vertical staggered distance of butt joint along should not be less than 500mm, and each connects the centre-to-centre distance master node and should not be greater than 1/3 of stride.
4. Strictly, the upper section of the steel pipe column 1 and the lower section of the steel pipe column 1 are fixed on the horizontal pull rod 11 in a staggered manner.
5. The outer periphery of the full formwork support upright post 1 is provided with vertical continuous type cross braces from bottom to top; the middle part is provided with vertical continuous type scissors supports from bottom to top at intervals of about 10m in the longitudinal and transverse directions, the width of the scissors supports is preferably 4-6 m, and horizontal scissors supports are arranged at the tops of the scissors supports and the sweeping rod 14. The bottom end of the cross brace rod piece is tightly propped against the ground, and the included angle is preferably 45-60 degrees. When the building layer height is 8-20 m, besides the requirement of meeting the above regulation, a zigzag diagonal brace is added between two vertically and horizontally adjacent continuous type cross braces, and a horizontal cross brace is added in the middle of each cross brace at the position with the horizontal cross brace.
The floor sweeping rod 14, the horizontal pull rod 11 and the shear braces adopt steel pipes with the diameter of 48mm multiplied by 2.8 mm, and are firmly buckled with the steel pipe upright posts 1 by using fasteners. The steel pipe pole 14 of sweeping the ground, horizontal pull rod 11 should adopt the butt joint, and the bridging should adopt the overlap joint, and overlap joint length must not be less than 500mm to adopt 2 rotatory fasteners to fix respectively in the department of being not less than 100mm from the rod end. The stand 1 increases strictly forbidden overlap joint, must adopt butt joint fastener to connect, and the butt joint of two adjacent stands 1 must not be in synchronous, and the vertical staggered distance of butt joint along should not be less than 500mm, and each connects the centre-to-centre distance master node and should not be greater than 1/3 of stride.
Vertical continuous type cross braces from bottom to top are arranged on the outer periphery of the full formwork and the shared space formwork support upright posts 1; vertical continuous type cross braces from bottom to top are arranged in the middle of the floor sweeping machine at intervals of about 10m in the longitudinal direction and the transverse direction, the width of each cross brace is preferably 4-6 m, and horizontal cross braces are arranged at the tops of the cross braces and the positions of the floor sweeping rods 14. The bottom end of the scissor brace rod piece is tightly propped against the ground, and the included angle is preferably 45-60 degrees.
The height of an upright post 1 of a basement roof beam support is 3.8m, and a fixing point is arranged at the position of a structural post at the outer side of the periphery of the upright post 1 and in the middle of the upright post at a horizontal interval of 6-9 m and a vertical interval of 2-3 m with a building structure; when the supporting height exceeds 8m, a horizontal pull rod 11 is additionally arranged between the two horizontal pull rods 11 at the topmost step pitch, and the end parts of all the horizontal pull rods 11 are firmly propped against the surrounding buildings; when the top can be pushed, continuous scissor braces are vertically arranged at the end part and the middle part of the horizontal pull rod 11.
The four sides of the support and the middle of the support stand columns 1 are provided with a longitudinal and transverse cross brace every four rows, and the cross braces are continuously arranged from bottom to top. And a horizontal cross brace is arranged for supporting more than 4 m. The lower opening of the cross brace props against the shear wall mold, and the cast shear wall mold is not detached before the concrete construction of the top plate of the basement is completed.
When the system is disassembled, any rod piece of the bent frame supporting system under the floor (the top plate of the basement) of the upright post 1 at the beam template part can not be disassembled, concrete pouring on the beam floor is required to be completed, and the system can be disassembled when the strength reaches over 75 percent.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (5)
1. The underground garage beam formwork construction method is characterized by comprising the following steps: the method comprises the following steps:
s1, constructing a supporting structure, namely, taking a fastener type steel pipe as a supporting upright post (1), arranging horizontal pull rods (11) on the upright post (1) along the longitudinal direction and the transverse direction, and distributing the horizontal pull rods (11) along the height direction of the upright post (1) for multiple times;
s2, beam bottom edges are installed, a plurality of square timbers (3) are arranged on a horizontal pull rod (11) on the uppermost layer of an upright post (1) in parallel, the distance between every two adjacent square timbers (3) is equal, then a connecting rod (2) is installed, a connecting groove (31) is formed in the top wall of each square timber (3), the connecting rod (2) is embedded into the connecting groove (31) of each square timber (3), the connecting rod (2) is connected with the connecting groove (31) in a sliding mode, the connecting rod (2) is perpendicular to the square timbers (3), the top wall of the connecting rod (2) is not higher than the top wall of each square timber (3), and at least two connecting grooves (31) are formed in the length direction of the square timber (3); the connecting structure is characterized in that a limiting hole (311) is formed in the bottom wall of the connecting groove (31), the connecting rod (2) penetrates through the connecting rod (2) along the vertical direction and is provided with a plurality of mounting holes (21), the mounting holes (21) are uniformly arranged along the length direction of the connecting rod (2) at intervals, a limiting part used for limiting the position of the square timber (3) is arranged on the connecting rod (2), the limiting part is a bolt (4) which is arranged in the mounting hole (21) in a penetrating mode and is used for being inserted into the limiting hole (311) to limit the position of the square timber (3), the bolt (4) is inserted into the limiting hole (311), and the square timber (3) is kept in a state that the square timber;
s3, mounting the beam bottom template (52), and arranging the beam bottom template (52) on a plurality of square timbers (3);
s4, binding steel bars;
s5, mounting beam side templates (51), respectively arranging the beam side templates (51) and beam end templates on the side surfaces and the end surfaces of the beam bottom templates (52), wherein the beam bottom templates (52), the beam end templates and the beam side templates (51) form an opening structure (5) with an opening at the top end, the periphery and the bottom closed;
s6, clamping rods (8) are respectively arranged on two side faces of the opening structure (5), and an installation space is reserved between each clamping rod (8) and the side face of the opening structure (5);
s7, mounting a horizontal back edge (6), and clamping the horizontal back edge (6) between the clamping rod (8) and the beam side template (51) through a counter-pulling screw rod (7);
and S8, pouring concrete.
2. The underground garage beam formwork construction method according to claim 1, characterized in that: when a beam bottom formwork (52) is installed, beam bottom arching construction is performed.
3. The underground garage beam formwork construction method according to claim 1, characterized in that: the bottom of the steel tube upright post (1) is provided with a skid (12) and a base (13), the top of the upright post (1) is provided with an adjustable support, if a gap exists between the U-shaped support and two sides of the stupefied beam, the U-shaped support and the stupefied beam are required to be wedged tightly, a screw rod of the U-shaped support extends out of the top of the steel tube and is not larger than 200mm, the gap between the outer diameter of the screw rod and the inner diameter of the steel tube upright post (1) is not larger than 3 mm.
4. The underground garage beam formwork construction method according to claim 1, characterized in that: a floor sweeping rod (14) is arranged at the height of 200mm from the ground at the bottom of the upright post (1) along the longitudinal, transverse and horizontal directions according to the vertical, horizontal and up-down programs.
5. The underground garage beam formwork construction method according to claim 4, characterized in that: a horizontal pull rod (11) is arranged at the top end of an upright post (1) at the bottom of the adjustable support along the longitudinal and transverse directions, the distance between the sweeping rod (14) and the horizontal pull rod (11) at the top is determined, and after the step pitch is determined by average distribution under the condition of meeting the step pitch requirement of the horizontal pull rod (11) determined by template design, the horizontal pull rod (11) is respectively arranged at each step pitch along the longitudinal and transverse directions; when the layer height is 8-20 m, a horizontal pull rod (11) is additionally arranged between the two horizontal pull rods (11) at the topmost step distance.
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| CN111042520A (en) * | 2019-11-28 | 2020-04-21 | 江苏永联精筑建设集团有限公司 | Slurry overflow prevention construction process for prefabricated part |
| CN113550576B (en) * | 2021-07-30 | 2022-12-27 | 重庆建工第三建设有限责任公司 | Deep beam steel bar binding side mold cabin jumping dislocation construction process |
| CN116145952A (en) * | 2022-08-25 | 2023-05-23 | 曹纪宗 | A construction method for building cast-in-place concrete early demoulding columns without removing columns |
| CN115822317A (en) * | 2022-11-18 | 2023-03-21 | 路菏保 | Template fixed bolster for construction |
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| DE20205427U1 (en) * | 2002-04-09 | 2002-08-14 | Hummel, Heinz, 49196 Bad Laer | Formwork element for supporting or ring beam formwork |
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