CN115717453A - Continuous construction method for multi-layer cantilever beam - Google Patents
Continuous construction method for multi-layer cantilever beam Download PDFInfo
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- CN115717453A CN115717453A CN202211333665.5A CN202211333665A CN115717453A CN 115717453 A CN115717453 A CN 115717453A CN 202211333665 A CN202211333665 A CN 202211333665A CN 115717453 A CN115717453 A CN 115717453A
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Abstract
The application discloses a continuous construction method for a multilayer cantilever beam, which comprises the following steps: step 1, determining a construction position, and installing an embedded part at a design position of a bottom floor; step 2, installing a temporary upright post for temporarily supporting a bottom layer cantilever beam to be constructed; step 3, constructing the bottom cantilever beam at the designed position of the bottom floor; step 4, mounting a permanent upright post on the upper cantilever beam; and 5, constructing the upper cantilever beam at the designed position of the upper floor. The construction method has the advantages that the construction of the upper-layer cantilever beam structure is carried out after the concrete strength of the cantilever beam reaches the required strength, and the condition of long construction period is effectively reduced, so that the effect of continuous construction of the cantilever beam structure in the multi-layer building is realized.
Description
Technical Field
The application relates to the field of cantilever beams, in particular to a continuous construction method of a multi-layer cantilever beam.
Background
The cantilever beam is a beam with one end buried or poured on a support and the other end extending out of the support. Cantilever beam structures are often encountered in the field of multi-storey building design, construction and even reinforcement. Because the cantilever beam structure is often outdoors and the cantilever beam is special in the whole structural system, once the quality problem occurs, great potential safety hazard is formed to the whole building.
In the related art, when a multi-story building is constructed, a constructor firstly constructs a floor slab structure of a bottom floor, establishes a floor slab template and carries out concrete pouring on the floor slab template, constructs an cantilever beam structure at a designed position of the floor when the strength of concrete is enough, establishes a supporting platform for supporting the cantilever beam and a template of the cantilever beam, carries out concrete pouring on the cantilever beam, repeats the operation after the concrete is condensed for a certain time until the concrete reaches the required strength, and constructs an upper story, thereby constructing the multi-story cantilever beam structure.
However, the construction method for the multi-layer cantilever beam structure in the related art needs to perform the construction of the upper-layer cantilever beam structure after the concrete strength of the cantilever beam reaches the required strength, the construction period is long, and the continuous construction cannot be performed on the cantilever beam structure in the multi-layer building.
Disclosure of Invention
In order to overcome the defects that the construction of an upper cantilever beam structure is required after the concrete strength of a cantilever beam reaches the required strength, the construction period is long, and continuous construction cannot be performed on the cantilever beam structure in a multi-layer building, the application provides a multi-layer cantilever beam continuous construction method.
The application provides a continuous construction method of a multilayer cantilever beam, which adopts the following technical scheme:
a continuous construction method for a multi-layer cantilever beam comprises the following steps:
step 1, determining a construction position, and installing an embedded part at a design position of a bottom floor;
step 2, installing a temporary upright post for temporarily supporting a bottom layer cantilever beam to be constructed;
step 3, constructing the bottom cantilever beam at the designed position of the bottom floor;
step 4, mounting a permanent upright post on the upper cantilever beam;
and 5, constructing the upper cantilever beam at the design position of the upper floor.
By adopting the technical scheme, when the cantilever beam of the multi-storey building is constructed, the temporary stand column is installed to support the bottom cantilever beam, the permanent stand column is installed on the upper-layer cantilever beam, the permanent stand column and the temporary stand column are used for supporting the cantilever beam of the previous storey at the moment, the cantilever beam of the previous storey is constructed again, the above operations are repeated, so that the construction of the cantilever beam of the multi-storey is carried out, the condition that the construction period is long and the construction of the upper-layer cantilever beam structure is carried out after the concrete strength of the cantilever beam reaches the required strength in the construction method of the multi-storey cantilever beam structure in the related technology is effectively reduced, and the continuous construction is carried out on the cantilever beam structure in the multi-storey building.
Preferably, the step 3 specifically comprises the following steps:
and 32, installing a template of the bottom cantilever beam on the supporting platform, and pouring concrete into the template.
By adopting the technical scheme, after the temporary stand column is installed, the supporting platform is installed, the template of the bottom cantilever beam is installed on the supporting platform of the bottom cantilever beam, concrete pouring is carried out on the template, the temporary stand column supports the bottom cantilever beam, then construction is carried out on the upper cantilever beam, and the temporary stand column also supports the upper cantilever beam.
Preferably, the step 4 specifically comprises the following steps:
and 42, reinforcing two ends of the template structure, and pouring concrete.
Through adopting above-mentioned technical scheme, before carrying out the construction of upper cantilever beam, install permanent stand earlier, erect the template structure of permanent stand to toward concreting in the template structure, the template structure through permanent stand supports the cantilever beam of last floor with interim stand this moment, is under construction the upper cantilever beam again, operation more than the repetition, thereby is under construction the cantilever beam of multilayer floor.
Preferably, the step 5 specifically comprises the following steps:
and step 52, installing a template of the upper cantilever beam on the supporting platform, and pouring concrete into the template.
By adopting the technical scheme, after the permanent stand column is installed, the supporting platform of the upper cantilever beam is installed firstly, then the template of the upper cantilever beam is installed on the supporting platform of the upper cantilever beam, and concrete pouring is carried out on the template, so that the permanent stand column supports the upper cantilever beam, and then the upper cantilever beam is constructed.
Preferably, the temporary stand column comprises a plurality of steel pipe columns which are spliced with one another, a flange is arranged at one end, facing each other, of each two adjacent steel pipe columns, a fixing plate is arranged at the bottom end of each steel pipe column, and one side, deviating from each steel pipe column, of each fixing plate is fixedly connected to the cantilever beam of the lower floor.
By adopting the technical scheme, before the bottom cantilever beam is constructed, the fixing plate is installed on the cantilever beam of the constructed floor, the steel pipe columns are welded on the fixing plate, and then the plurality of steel pipe columns are spliced into the temporary stand columns through the flanges, so that the bottom cantilever beam is supported.
Preferably, the supporting platform comprises a plurality of steel longitudinal beams, one ends of the steel longitudinal beams, which are close to the embedded parts, are provided with mounting plates, high-strength screws are arranged in the embedded parts, one ends of the high-strength screws penetrate through the mounting plates, and one ends of the high-strength screws penetrating through the mounting plates are connected with locking nuts through threads; the steel longeron on be provided with a plurality of roots with the steel longeron is the steel crossbeam of vertically and horizontally staggered setting, the top of interim stand is provided with the pile cap, the pile cap deviates from one side of interim stand is provided with the roof beam steel support that falls, the roof beam steel support that falls deviates from one side butt of pile cap in on the steel longeron with the intersection of steel crossbeam.
By adopting the technical scheme, after the temporary stand column is erected, the pile cap is installed at the top end of the temporary stand column, the beam falling steel support is installed on the pile cap, the steel longitudinal beam is fixedly connected with the embedded part, and the steel cross beam is installed on the steel longitudinal beam, so that the temporary stand column is supported at the intersection of the steel longitudinal beam and the steel cross beam, and the cantilever beam of the previous floor is supported. After the construction of the cantilever beams of all floors is completed, the supporting platform is descended by a certain height through the beam falling steel support, so that the stress of the supporting platform is relieved, and the supporting platform and the temporary stand columns are conveniently detached.
Preferably, the bottom end of the template structure is provided with a plurality of support rods, and the top end of the template structure is provided with a plurality of groups of bracket brackets; the template structure includes the template body of a plurality of mutual concatenations, the template body is provided with a plurality of stupefied outward, stupefied deviating from of wood one side of template body is provided with the dead lever, adjacent two be provided with between the dead lever and be used for making the two reciprocal anchorage just the dead lever supports tightly it is stupefied, thereby makes it is stupefied to support tightly the fixed subassembly in the outside of template body.
Through adopting above-mentioned technical scheme, after the construction of bottom cantilever beam was accomplished, template structure through permanent stand and the setting of interim stand are assisted with bracing piece and bracket and are supported the upper cantilever beam. When the required concrete intensity of the permanent stand of earlier construction is enough, adjustable fixed subassembly makes two adjacent dead levers unblock each other, dismantles stupefied and the template body with wooden, can provide the floor of not being under construction and use again.
Preferably, the fixing assembly comprises fixing screws, two ends of each fixing screw penetrate through the two fixing rods respectively, a cushion block is sleeved at one end, penetrating through the fixing rods, of each fixing screw, and a fixing nut is connected to one end, penetrating through the cushion block, of each fixing screw in a threaded manner.
Through adopting above-mentioned technical scheme, when dismantling the template structure, loosen fixation nut earlier to shift out the cushion from the clamping screw outward, take out clamping screw again and make adjacent dead lever unblock, then demolish stupefied and template body with wood.
Preferably, the template body with be provided with spacing seat between the stupefied, a plurality of spacing groove has been seted up to one side that spacing seat deviates from the template body, a plurality of spacing groove is followed the equidistant seting up of length direction of spacing seat, one side of stupefied correspondence set up with the joint groove of spacing groove mutual block.
Through adopting above-mentioned technical scheme for after erecting the template body, the spacing seat of installation and with stupefied removal of wood to the spacing inslot, make joint groove and the mutual block of spacing groove, thereby make the stupefied perpendicular and equidistant installation of a plurality of woods outside the template body, and then make the stupefied power of applying at the template body of wood distribute evenly, with the shaping quality of guaranteeing to pour permanent stand behind the concrete effectively.
Preferably, the bracket includes the horizon bar and sets up in the horizon bar orientation the bracket of one side of bracing piece, the horizon bar deviates from one side butt in last floor of bracing piece supporting platform, the bracket is the slope setting, the bracket is kept away from the one end of horizon bar connect in the template body.
Through adopting above-mentioned technical scheme, form the triangle-shaped structure between bracket, horizon bar, the template body for the bracket supports the supporting platform of last floor, thereby consolidates the template structure of permanent stand and supports the cantilever beam of last floor.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the temporary stand columns and the permanent stand columns are arranged, so that the condition that the construction period of the construction method of the multi-layer cantilever beam structure in the related technology is long is effectively reduced, and the continuous construction of the cantilever beam structure in the multi-layer building is realized;
2. when the required concrete intensity of the permanent stand of first construction is enough, make two adjacent dead levers unblock each other through adjusting fixed subassembly to dismantle the template body and use in order to provide the floor of not being under construction.
Drawings
Fig. 1 is a block flow diagram of an embodiment of the present application.
Fig. 2 is a side view of an embodiment of the present application.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a front view of an embodiment of the present application.
Fig. 5 is an enlarged view of a portion B in fig. 4.
Fig. 6 is a schematic diagram for illustrating a relationship between a bottom cantilever beam and an upper cantilever beam in an embodiment of the present application.
Fig. 7 is a cross-sectional view of a form construction embodying permanent studs in an embodiment of the present application.
Fig. 8 is an exploded view for showing the relationship between the wood ridge and the spacing block in the embodiment of the present application.
Description of the reference numerals:
10. a sleeve; 11. a square nut; 12. a high-strength screw; 20. a temporary post; 201. steel pipe columns; 21. a flange; 22. a fixing plate; 23. a reinforcing plate; 24. pile caps; 25. a beam falling steel support; 30. a support platform; 301. a steel stringer; 302. a steel beam; 31. mounting a plate; 32. a locking nut; 33. a gasket; 40. a permanent upright post; 41. template structure; 411. a template body; 42. wood corrugation; 43. a limiting seat; 44. a limiting groove; 45. a clamping groove; 46. fixing the rod; 47. fixing the screw rod; 48. cushion blocks; 49. fixing a nut; 50. a support bar; 51. a bracket; 511. a horizontal bar; 512. a bracket; 60. a cantilever beam.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-8.
Referring to fig. 1 and 2, the application discloses a continuous construction method of a multi-layer cantilever beam, which comprises the following steps:
step 1, determining a construction position, and installing an embedded part at a design position of a bottom floor;
when the bottom floor is constructed, according to the illustration of a drawing and construction requirements, the construction of the cantilever beam 60 is carried out at the designed position of the floor, the embedded part is firstly installed in the floor slab template of the bottom floor, and then concrete is poured on the floor slab template, so that the embedded part is embedded in the floor slab of the bottom floor in advance. It should be noted that the embedded part is horizontally arranged, and the embedded part needs to be embedded in the stressed steel bar of the floor slab template so as to ensure the structural strength of the embedded part.
Referring to fig. 1 and 3, the embedded part is a steel casing 10, and a square nut 11 is fixedly installed in the casing 10. A high-strength screw 12 penetrates through the sleeve 10, the high-strength screw 12 is threaded, one end of the high-strength screw 12 extends into the sleeve 10 and is in threaded connection with the square nut 11, and one end of the high-strength screw 12, which is far away from the square nut 11, extends out of the sleeve 10.
Step 2, installing a temporary upright post 20 for temporarily supporting a bottom layer cantilever beam 60 to be constructed;
referring to fig. 3 and 4, before the bottom cantilever beam 60 is concreted, a plurality of temporary columns 20 are installed, so as to temporarily support the bottom cantilever beam 60 to be constructed, so as to stably support the bottom cantilever beam 60 after concreting. In this embodiment, the plurality of temporary uprights 20 are arranged at equal intervals along the length direction of the cantilever beam 60.
Referring to fig. 4 and 5, the temporary column 20 includes a plurality of steel pipe columns 201 spliced with each other, flanges 21 are installed at opposite ends of the upper and lower steel pipe columns 201, and the upper and lower steel pipe columns 201 are fixed to each other by the flanges 21. The bottom welding of interim stand 20 has fixed plate 22, and the fixed plate 22 deviates from one side fixed connection in the cantilever beam 60 of lower floor's floor of interim stand 20. Fixed plate 22 has a plurality of gusset plates 23 towards one side welding of interim stand 20, gusset plate 23 is made for the steel sheet material, gusset plate 23 is the setting of right angle trapezoidal form, gusset plate 23 is used for distributing interim stand 20's atress average to fixed plate 22, and a plurality of gusset plates 23 are along fixed plate 22's circumferential direction evenly distributed, make the cavity that forms between a plurality of gusset plates 23 can hold interim stand 20's bottom just, after interim stand 20's bottom inserted the cavity, weld again between gusset plate 23 and interim stand 20 and make the two reciprocal anchorage.
Step 3, constructing the bottom cantilever beam 60 at the designed position of the bottom floor;
the construction of the bottom cantilever beam 60 specifically comprises the following steps:
referring to fig. 2 and 3, it should be noted that, in this embodiment, the bottom floor in the multi-story building refers to the first floor and the second floor, and the bottom floor cantilever beam 60 is the cantilever beam 60 installed at the design position of the second floor.
The supporting platform 30 comprises a plurality of steel longitudinal beams 301, the steel longitudinal beams 301 are made of I-shaped steel, the steel longitudinal beams 301 are arranged at equal intervals along the length direction of the cantilever beam 60, and the steel longitudinal beams 301 are matched with the two embedded parts, so that the steel longitudinal beams 301 are fixedly installed at the designed positions of the bottom floors. The mounting plate 31 is welded at one end of the steel longitudinal beam 301 close to the high-strength screw 12, two through holes are correspondingly formed in one side of the mounting plate 31, the through holes penetrate through two opposite sides of the mounting plate 31, one end, penetrating out of the sleeve 10, of the high-strength screw 12 penetrates through the through holes, and one end, penetrating out of the through holes, of the high-strength screw 12 is in threaded connection with the locking nut 32. A gasket 33 for increasing the contact area between the locking nut 32 and the mounting plate 31 is arranged between the locking nut 32 and the mounting plate 31, and the steel longitudinal beam 301 and the embedded part are fixed to each other by tightening the locking nut 32, so that the steel longitudinal beam 301 is fixedly connected to the bottom floor.
Referring to fig. 2 and 4, a plurality of steel cross beams 302 are welded on the steel longitudinal beams 301, and the steel cross beams 302 are made of i-shaped steel. The plurality of steel cross beams 302 are arranged at equal intervals along the length direction of the steel longitudinal beam 301, the steel cross beams 302 span the plurality of steel longitudinal beams 301, so that the steel cross beams 302 and the steel longitudinal beams 301 are arranged in a criss-cross mode, and the steel cross beams 302 and the steel longitudinal beams 301 are fixed mutually through welding. With reference to fig. 5, a pile cap 24 is installed at the top end of the temporary upright column 20, the pile cap 24 is used for plugging the opening of the temporary upright column 20, a beam falling steel support 25 is arranged on one side of the pile cap 24 departing from the temporary upright column 20, and one side of the beam falling steel support 25 departing from the pile cap 24 abuts against the intersection of the steel longitudinal beam 301 and the steel cross beam 302, so as to facilitate subsequent detachment of the supporting platform 30. In this embodiment, one end of the temporary column 20 is used to support the intersection between the steel cross beam 302 and the steel longitudinal beam 301, the other end is fixedly connected to the cantilever beam 60 of the lower floor, for example, the temporary column 20 is disposed between the second-floor cantilever beam 60 and the third-floor cantilever beam 60, one end of the temporary column 20 is used to support the intersection between the steel cross beam 302 and the steel longitudinal beam 301 of the third-floor cantilever beam 60, and the other end is fixedly connected to the cantilever beam 60 of the second floor.
And 32, installing a template of the bottom cantilever beam 60 on the supporting platform 30, and pouring concrete into the template.
Before concrete pouring is carried out on the bottom cantilever beam 60, the temporary upright post 20 is adopted to support the supporting platform 30, the template of the bottom cantilever beam 60 is installed, concrete is poured into the template, and the arrangement of the temporary upright post 20 not only supports the bottom cantilever beam 60, but also plays a supporting role in the construction of the cantilever beam 60 on floors above the bottom layer.
Step 4, mounting a permanent upright post 40 on the upper cantilever beam 60;
in this embodiment, the upper floor refers to a floor except for the bottom floor (first floor and second floor), the permanent column 40 is disposed between the cantilever beams 60 of two adjacent floors in the upper floor, for example, the permanent column 40 is disposed between the third-floor cantilever beam 60 and the fourth-floor cantilever beam 60, one end of the permanent column 40 is mounted on the third-floor cantilever beam 60, and the other end is connected to a side of the fourth-floor cantilever beam 60 facing the third-floor cantilever beam 60.
The installation of the permanent upright 40 comprises in particular the following steps:
referring to fig. 6 and 7, after the bottom cantilever beam 60 is installed, the formwork structure 41 of the permanent post 40 is installed on the bottom cantilever beam 60 to form a casting area for casting the permanent post 40.
Referring to fig. 6 and 7, the formwork structure 41 includes four formwork bodies 411 that are spliced together, the formwork bodies 411 are rectangular plate bodies, and the four formwork bodies 411 are spliced together to form a casting area for casting the permanent columns 40. A plurality of wooden ridges 42 are arranged outside the template body 411, the wooden ridges 42 are distributed along the width direction of the template body 411 at equal intervals, and the wooden ridges 42 are arranged along the length direction of the template body 411. The limiting seat 43 used for enabling the plurality of wood ridges 42 to be vertically and uniformly arranged is installed outside the formwork body 411, the limiting seat 43 is arranged in a cuboid shape, the limiting seat 43 is arranged in the width direction of the formwork body 411, and two ends of the limiting seat 43 are fixed with the formwork body 411 through screws. Referring to fig. 8, a plurality of limiting grooves 44 are formed in one side of the limiting seat 43 away from the template body 411, the plurality of limiting grooves 44 are arranged at equal intervals along the length direction of the limiting seat 43, and the limiting grooves 44 are formed along the height direction of the limiting seat 43. One side of the wood beam 42 facing the limiting seat 43 is correspondingly provided with a clamping groove 45 clamped with the limiting groove 44, and when the wood beam 42 is installed, the wood beam 42 is moved to enable the clamping groove 45 and the limiting groove 44 to be clamped with each other, so that the wood beam 42 can be vertically installed outside the template body 411.
Referring to fig. 6 and 7, a fixing rod 46 is installed on one side of the wooden edge 42, which is away from the limiting seat 43, the fixing rod 46 is arranged along the width direction of the formwork body 411, and the fixing rod 46 is abutted against the wooden edge 42. A fixing component is arranged between the two adjacent fixing rods 46, and the two adjacent fixing rods 46 are fixed with each other by the fixing component, and the fixing rods 46 are tightly pressed against the wood ridges 42, so that the wood ridges 42 are tightly pressed against the outer side of the formwork body 411. Specifically, the fixing assembly includes a fixing screw 47 having two ends respectively penetrating through two adjacent fixing rods 46, the fixing screw 47 is disposed in an inclined manner, and an angle between the fixing screw 47 and the fixing rod 46 is disposed in an acute angle. One end of the fixing screw 47 penetrating through the fixing rod 46 is sleeved with a cushion block 48, the cross section of the cushion block 48 is arranged in a right triangle, and the bevel edge of the cushion block 48 abuts against one side of the fixing rod 46 departing from the wood edge 42. The fixing screw 47 is connected with a fixing nut 49 through one end of the cushion block 48, and by screwing the fixing nut 49, two adjacent fixing rods 46 can be fixed with each other, and the wood ridge 42 is pressed against the outer side of the formwork body 411.
And 42, reinforcing two ends of the formwork structure 41 and pouring concrete.
When the formwork structure 41 of the permanent post 40 is erected, reinforcement is required at both ends of the formwork structure 41 to better support the cantilever beam 60 of the upper floor.
Referring to fig. 4 and 7, a plurality of support rods 50 are installed at the bottom end of the formwork structure 41, the plurality of support rods 50 are uniformly distributed along the circumferential direction of the formwork structure 41, the support rods 50 are arranged in an inclined manner, one end of each support rod 50 abuts against the cantilever beam 60 after construction, and the other end of each support rod 50 is fixedly connected to the side wall of the formwork body 411. A plurality of sets of bracket brackets 51 are mounted at the top end of the formwork structure 41, and the plurality of sets of bracket brackets 51 are arranged along the circumferential direction of the formwork structure 41. Specifically, the bracket 51 includes a horizontal bar 511 and a bracket 512 welded to one side of the horizontal bar 511 facing the supporting bar 50, the horizontal bar 511 is disposed along the width direction of the formwork body 411, and one side of the horizontal bar 511 facing away from the supporting bar 50 abuts against the supporting platform 30 on the previous floor. The bracket 512 is arranged to incline downwards from one end close to the horizontal rod 511 to the end far away from the horizontal rod 511, and one end of the bracket 512 far away from the horizontal rod 511 is connected to the formwork body 411.
It should be noted here that the permanent columns 40 do not play a supporting role until the strength of the poured concrete does not reach the design strength, the template structure 41 and the bottom layer temporary columns 20 mainly support the cantilever beam 60 of the previous floor, and the temporary columns 20 need to be removable after the design strength of the permanent columns 40 of all the floors is reached.
And 5, constructing the upper cantilever beam 60 at the designed position of the upper floor.
The construction of the upper cantilever beam 60 specifically comprises the following steps:
and step 52, installing a formwork of the upper cantilever beam 60 on the supporting platform 30, and pouring concrete into the formwork.
After the permanent columns 40 are concreted, the supporting platform 30 may be installed, and after the supporting platform 30 is installed, formwork installation may be performed, and then concreting may be performed. In addition to the temporary uprights 20 supporting the upper cantilever beams 60, the arrangement of the formwork structures 41 of the permanent uprights 40 simultaneously supports the upper cantilever beams 60. Since the structure of the support platform 30 of the upper cantilever beam 60 is the same as that of the support platform 30 of the lower cantilever beam 60, the detailed description thereof is omitted.
In addition, it should be noted that, after the upper cantilever beam 60 is constructed to a higher floor, for example, to the eighth floor, the concrete strength of the permanent upright 40 of the third floor has already reached a higher strength, and at this time, the formwork structure 41 of the permanent upright 40 may be disassembled for use in constructing the cantilever beam 60 of the non-constructed floor.
The implementation principle of the embodiment of the application is as follows: when the cantilever beam 60 of the multi-story building is constructed, the supporting platform 30 of the bottom cantilever beam 60 is supported by installing the temporary upright posts 20, and then the template of the bottom cantilever beam 60 is installed on the supporting platform 30 of the bottom cantilever beam 60 and is subjected to concrete pouring. The permanent upright post 40 is installed on the upper cantilever beam 60, the template structure 41 of the permanent upright post 40 is erected, concrete is poured into the template structure 41, the template structure 41 of the permanent upright post 40 and the temporary upright post 20 support the cantilever beam 60 of the previous floor, the upper cantilever beam 60 is constructed, and the operations are repeated, so that the construction of the cantilever beam 60 of multiple floors is performed, the condition that the construction period is long and the cantilever beam 60 structure of the multiple floors is continuously constructed after the concrete strength of the cantilever beam 60 reaches the required strength in the construction method of the structure of the cantilever beam 60 of the multiple floors in the related art is effectively reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A continuous construction method for a multi-layer cantilever beam is characterized by comprising the following steps:
step 1, determining a construction position, and installing an embedded part at a design position of a bottom floor;
step 2, installing a temporary upright post (20) for temporarily supporting a bottom layer cantilever beam (60) to be constructed;
step 3, constructing a bottom cantilever beam (60) at the design position of the bottom floor;
step 4, mounting a permanent upright post (40) on the upper cantilever beam (60);
and 5, constructing the upper cantilever beam (60) at the design position of the upper floor.
2. The continuous construction method of a multi-layer cantilever beam according to claim 1, wherein: the step 3 specifically comprises the following steps:
step 31, mounting a supporting platform (30) of the bottom cantilever beam (60);
and 32, installing a template of the bottom cantilever beam (60) on the supporting platform (30), and pouring concrete into the template.
3. The continuous construction method of a multi-layer cantilever beam according to claim 2, wherein: the step 4 specifically comprises the following steps:
step 41, erecting a template structure (41) of a permanent upright post (40);
and 42, reinforcing two ends of the formwork structure (41) and pouring concrete.
4. The continuous construction method of the multi-layer cantilever beam according to claim 1, wherein: the step 5 specifically comprises the following steps:
step 51, mounting a supporting platform (30) of an upper layer cantilever beam (60);
and step 52, installing a template of the upper cantilever beam (60) on the supporting platform (30), and pouring concrete into the template.
5. The continuous construction method of a multi-layer cantilever beam according to claim 1, wherein: the temporary stand column (20) comprises a plurality of steel pipe columns (201) which are spliced with one another, a flange (21) is arranged at one end, facing each other, of each two adjacent steel pipe columns (201), a fixing plate (22) is arranged at the bottom end of each steel pipe column (201), and one side, deviating from each steel pipe column (201), of each fixing plate (22) is fixedly connected to the cantilever beam (60) of the lower floor.
6. The continuous construction method of a multi-layer cantilever beam according to claim 3, wherein: the supporting platform (30) comprises a plurality of steel longitudinal beams (301), one ends of the steel longitudinal beams (301) close to the embedded parts are provided with mounting plates (31), high-strength screws (12) are arranged in the embedded parts, one ends of the high-strength screws (12) penetrate through the mounting plates (31), and one ends of the high-strength screws (12) penetrating through the mounting plates (31) are connected with locking nuts (32) through threads; be provided with on steel longeron (301) a plurality of roots with steel longeron (301) are steel crossbeam (302) that vertically and horizontally staggered set up, the top of temporary stand (20) is provided with pile cap (24), pile cap (24) deviate from one side of temporary stand (20) is provided with roof beam steel support (25) that falls, roof beam steel support (25) that falls deviate from one side butt of pile cap (24) in on steel longeron (301) with the junction of steel crossbeam (302).
7. The continuous construction method of a multi-layer cantilever beam according to claim 6, wherein: the bottom end of the template structure (41) is provided with a plurality of support rods (50), and the top end of the template structure (41) is provided with a plurality of groups of bracket brackets (51); template structure (41) include template body (411) of the mutual concatenation of a plurality of pieces, template body (411) are provided with a plurality of stupefied (42) outward, stupefied (42) deviate from one side of template body (411) is provided with dead lever (46), adjacent two be provided with between dead lever (46) and be used for making the two fixed each other just dead lever (46) support tightly stupefied (42), thereby make stupefied (42) support tightly the fixed subassembly in the outside of template body (411).
8. The continuous construction method of a multi-layer cantilever beam according to claim 7, wherein: the fixing assembly comprises fixing screw rods (47) with two ends penetrating through the two fixing rods (46), a cushion block (48) is sleeved at one end, penetrating through the fixing rods (46), of each fixing screw rod (47), and a fixing nut (49) is connected to one end, penetrating through the cushion block (48), of each fixing screw rod (47) in a threaded mode.
9. The continuous construction method of a multi-layer cantilever beam according to claim 7, wherein: the template body (411) with be provided with spacing seat (43) between wooden stupefied (42), spacing seat (43) deviate from a plurality of spacing groove (44) have been seted up to one side of template body (411), and a plurality of spacing groove (44) are followed the equidistant seting up of length direction of spacing seat (43), one side correspondence of wooden stupefied (42) seted up with joint groove (45) of spacing groove (44) mutual block.
10. The continuous construction method of a multi-layer cantilever beam according to claim 7, wherein: bracket (51) include horizon bar (511) and set up in horizon bar (511) orientation bracket (512) of one side of bracing piece (50), horizon bar (511) deviate from one side butt of bracing piece (50) in last floor supporting platform (30), bracket (512) are the slope setting, bracket (512) are kept away from the one end of horizon bar (511) connect in template body (411).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116044211A (en) * | 2023-04-03 | 2023-05-02 | 中铁城建集团第一工程有限公司 | Supporting device and supporting method for single-side cantilever structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116044211A (en) * | 2023-04-03 | 2023-05-02 | 中铁城建集团第一工程有限公司 | Supporting device and supporting method for single-side cantilever structure |
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