CN113565322A - Cantilever formwork supporting structure and erection method - Google Patents
Cantilever formwork supporting structure and erection method Download PDFInfo
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- CN113565322A CN113565322A CN202110806575.2A CN202110806575A CN113565322A CN 113565322 A CN113565322 A CN 113565322A CN 202110806575 A CN202110806575 A CN 202110806575A CN 113565322 A CN113565322 A CN 113565322A
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- clamping seat
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
- E04G13/066—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for overhangs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/001—Corner fastening or connecting means for forming or stiffening elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
Abstract
The invention relates to the technical field of constructional engineering, in particular to a cantilever formwork supporting structure and an erection method, wherein the supporting structure comprises a formwork support and two supporting frames; the support frame comprises a clamping seat, a vertical span section and transverse span sections, the clamping seat is used for clamping the existing longitudinal beam of the building, the lower end of the vertical span section is fixedly connected with the clamping seat, one end of each transverse span section is fixedly connected with the clamping seat, and one ends of the two transverse span sections, which are far away from the clamping seat, can be connected through split screws; the template frame up end is fixed with the die plate, template frame one end has cup jointed the regulation section of thick bamboo, adjust a section of thick bamboo with the joint seat is articulated, just the template frame can be followed one side of template frame plate length direction rotates, adjust a section of thick bamboo can to erect the span section and rotate, the template frame both sides all through a plurality of cables with correspond erect the span section can dismantle and be connected. The method provided by the invention is based on the structure, so that the method has the characteristics of simple erection, convenience in disassembly, and high erection and disassembly efficiency.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a cantilever formwork supporting structure and an erection method.
Background
Modern buildings often adopt a high-altitude large-cantilever method to meet the requirements of use functions and attractive appearance. Such as a large-span atrium of public buildings and super high-rise commercial and residential buildings, sometimes the height reaches more than ten floors in order to achieve the building effects of spaciousness, permeability and wide visual field; in high-rise and super high-rise residential buildings, in order to develop the personality of the building, a framework on a roof is cantilevered a plurality of meters out of the plane of the building; two tower buildings of high-rise and super high-rise buildings are connected into a whole again in the air through a reinforced concrete structure, so that the style of the buildings is highlighted. The construction characteristics of the several types of high-altitude large cantilever structures are as follows: large span, high height, large construction load and high construction difficulty.
The existing cantilever formwork supporting structure anchors a support on an outer wall or a column, one end of I-shaped steel or H-shaped steel is fixed on a beam on the next layer, the support and the outer end of the I-shaped steel or the H-shaped steel are fixedly connected through a diagonal member to form a triangular support, and then a cantilever formwork supporting scaffold is erected on the triangular support. Although can effectual support the template of encorbelmenting, it is great, dismantle inefficiency to support the die carrier and dismantle the degree of difficulty, and need anchor the supporting seat on outer wall or stand, influences high-rise building's structural strength easily.
Disclosure of Invention
Aiming at the technical problems that the existing cantilever formwork support formwork is high in disassembly difficulty and low in disassembly efficiency and influences the strength of a building structure; the invention provides a cantilever formwork supporting structure, which does not need to anchor a supporting seat on an existing building structure, does not influence the structural strength of a building, does not need to set up a supporting formwork, and has the characteristics of simple set-up, convenient disassembly, and high set-up and disassembly efficiency.
The invention is realized by the following technical scheme:
in a first aspect, the invention provides an overhanging formwork support structure, which comprises a formwork support and two support frames; the support frame comprises a clamping seat, a vertical span section and transverse span sections, the clamping seat is used for clamping an existing longitudinal beam of a building, the lower end of the vertical span section is fixedly connected with the clamping seat, one end of each transverse span section is fixedly connected with the clamping seat, and one ends of the two transverse span sections, which are far away from the clamping seat, can be connected through split screws; the space defined by the two vertical span sections is used for accommodating an existing building upright post and an overhanging template, and the space defined by the two transverse span sections is used for accommodating an existing building beam; the template frame up end is fixed with the die plate, template frame one end has cup jointed the regulation section of thick bamboo, adjust a section of thick bamboo with the joint seat is articulated, just the template frame can be followed one side of template frame plate length direction rotates, adjust a section of thick bamboo can to erect the span section and rotate, the template frame both sides all through a plurality of cables with correspond erect the span section can dismantle and be connected.
When the invention is used, firstly, the tension of the stay cable to the formwork rack is released, so that the formwork rack rotates downwards to be vertical under the action of gravity, or the formwork rack is tensioned on the vertical span section, then the clamping seat is clamped on the longitudinal beams at two sides of the existing upright post of the building, and the horizontal span section extends along the existing cross beam of the building; and then the two cross sections are fixed through the opposite-pulling screw rods, so that the existing cross beam of the building is accommodated in a space surrounded by the two cross sections. After the spanning section is fixed, the stay cable is tensioned to suspend the template frame outside the building according to the inclination angle of the cantilever beam through the stay cable, so that the template frame is erected outside the building according to a set angle, and the template can be prevented from moving downwards; and one side of the template frame is hinged with the clamping seat through the adjusting cylinder, so that the template frame can be prevented from swinging left and right, and the sufficient stability of the cantilever template supporting structure is ensured.
Because be provided with the die block board on the template frame, joint seat card on the longeron of the existing stand both sides of building, span the section and extend along the existing crossbeam of building, and the space that two vertical spans section enclose can hold the existing stand of building and encorbelment the template, the space that two horizontal spans section enclose is used for holding the existing crossbeam of building, can directly support the die carrier and erect the template of encorbelmenting on the crossbeam of fixed horizontal span section. Therefore, the invention does not need to anchor the supporting seat on the existing building structure, does not influence the structural strength of the building, does not need to set up a supporting die frame, and has the characteristics of simple set up, convenient disassembly, high set up and disassembly efficiency.
In addition, the inhaul cables connected with the two sides of the template frame are detachably connected with the vertical span section, one side of the template frame is rotatably connected with the adjusting cylinder, when the cantilever beam reaches the preset structural strength, the cantilever beam template is disassembled, then the inhaul cables on one side, away from the adjusting cylinder, of the template frame can be disassembled firstly, and at the moment, only one side, connected with the adjusting cylinder, of the template frame is kept in place under the pulling force of the inhaul cables; consequently, the template frame rotates along one side length direction that template frame and regulation section of thick bamboo are connected under the action of gravity, then tightens up the cable and can upwards draw in template frame in, dismantles again to the screw rod that draws, shifts up the joint seat and can accomplish whole bearing structure's dismantlement, bearing structure's dismantlement is simple and convenient.
In an optional embodiment, the vertical span section is inclined outwards to shorten the length of the guy cable between the vertical span section and the formwork frame, so as to further improve the stability of the cantilever formwork support structure.
In an optional embodiment, the two vertical span ends are fixedly connected through a plurality of longitudinal rods, and the longitudinal rods are arranged at intervals along the length direction of the vertical span ends so as to connect the two support frames into a whole through the longitudinal rods, thereby ensuring that the support frames have enough structural strength.
In an optional embodiment, the spanning sections are plate-shaped, so that the connecting ends of the cantilever beams and the existing building beams can be directly built between the two spanning sections, the erection workload of cantilever beam templates is reduced, and the building efficiency of the cantilever beams is improved.
In an optional embodiment, the clamping seat comprises a supporting plate and a first vertical plate, one side of the supporting plate is fixedly connected with one side of the first vertical plate, the supporting plate extends along the length direction of the cross section, and the first vertical plate is opposite to the cross section.
In an optional embodiment, the joint seat still includes the second riser, the second riser is fixed the backup pad is kept away from one side of first riser, the first riser the second riser with the space that the backup pad encloses is used for the existing longeron of joint building to ensure the stability of joint seat and the existing longeron joint of building, also can prevent that the support frame slopes after joint seat and longeron joint connect, does not need extra support frame when the fixed bolster, further simplifies the process that suspended formwork bearing structure erect.
In an alternative embodiment, the first riser, the second riser and the support plate are integrally formed, so that on one hand, the machining of the clamping seat can be simplified, and on the other hand, the clamping seat can be ensured to have enough structural strength.
In an optional embodiment, still include the pneumatic cylinder, pneumatic cylinder one end with it is articulated to erect the span, the pneumatic cylinder other end pass through the universal joint with the template frame is connected, just the pneumatic cylinder is located erect the span and connect one side of template frame to the shrink and the expansion of template frame are realized in the automation, and the stretch-draw of template frame of being convenient for further improves the efficiency of erectting of the template bearing structure of encorbelmenting, also be convenient for simultaneously encorbelment taking in, transfer and the transportation of template.
In an optional embodiment, the length of the stay cable is adjustable, and the adaptability of the cantilever formwork supporting structure is improved.
In a second aspect, the present invention further provides an overhanging form erecting method, based on the overhanging form support structure, including the following steps:
s1, driving the hydraulic cylinder to contract so as to change the included angle between the length direction of the adjusting cylinder and the vertical span section and enable the template frame to keep vertical or parallel to the vertical span section;
s2, clamping the clamping seats on longitudinal beams on two sides of the existing building upright post to enable the cross-span section to extend along the existing building cross beam;
s3, projecting the lower part of one end of the spanning section, which is far away from the clamping seat, out of the lower end of the existing cross beam of the building, and fixing the two spanning sections through the opposite-pulling screw rods to enable the existing cross beam of the building to be accommodated in a space surrounded by the two spanning sections;
s4, driving a hydraulic cylinder to extend, and enabling the template frame to rotate to the inclined position of the cantilever beam to be poured;
s5, adjusting the lengths of the pull cables on the two sides of the formwork frame to enable the bottom formwork to be inclined according to the inclination angle of the cantilever beam to be poured, and enabling the pull cables to stretch the formwork frame according to a preset pull force;
and S6, arranging overhanging side dies and end dies on the bottom die plate to enable the end dies, the side dies, the bottom die, the cross sections, the upper end surfaces of the longitudinal beams and the upper end surfaces of the cross beams to enclose an overhanging pouring die cavity.
When the overhanging formwork supporting structure is erected by the method, the existing structure body anchoring supporting seat of the building is not needed, the structural strength of the building is not influenced, a supporting formwork is not needed to be erected, and the method has the characteristics of simplicity in erection, convenience in detachment, and high erection and detachment efficiency.
The invention has the beneficial effects that:
1. the longitudinal beams on two sides of the existing upright post of the building are clamped through the clamping seats, the two cross sections are fixed through the split screws, the existing cross beam of the building can be accommodated in a space surrounded by the two cross sections, the template frame is suspended outside the building according to the inclination angle of the cantilever beam through the inhaul cable, the template frame is erected outside the building according to a set angle, and the template can be prevented from moving downwards; and one side of the template frame is hinged with the clamping seat through the adjusting cylinder, so that the template frame can be prevented from swinging left and right, the sufficient stability of the cantilever template supporting structure is ensured, the supporting seat does not need to be anchored at the existing structure of the building, the structural strength of the building cannot be influenced, and the template frame has the characteristic of simple structure.
2. The formwork frame is provided with the bottom formwork, the clamping seats are clamped on the longitudinal beams on two sides of the existing building upright post, the cross sections extend along the existing building crossbeam, the space defined by the two vertical cross sections can accommodate the existing building upright post and the cantilever formwork, the space defined by the two transverse cross sections is used for accommodating the existing building crossbeam, the cantilever formwork can be directly supported on the formwork frame and erected on the crossbeam for fixing the transverse cross sections, and the formwork frame does not need to be erected.
3. According to the invention, the inhaul cables connected with two sides of the template frame are detachably connected with the vertical span section, one side of the template frame is rotatably connected with the adjusting cylinder, when the cantilever beam reaches a preset structural strength, the cantilever beam template is disassembled, then the inhaul cable on one side of the template frame away from the adjusting cylinder can be disassembled firstly, and at the moment, only one side of the template frame connected with the adjusting cylinder keeps in place under the pulling force of the inhaul cable; consequently, the template frame rotates along one side length direction that template frame and regulation section of thick bamboo are connected under the action of gravity, then tightens up the cable and can upwards draw in template frame in, dismantles again to the screw rod that draws, shifts up the joint seat and can accomplish whole bearing structure's dismantlement, bearing structure's dismantlement is simple and convenient.
4. The tensioning of the stay cable to the formwork frame is firstly released, so that the formwork frame is downwards rotated to be vertical under the action of gravity, or the formwork frame is tensioned on the vertical span section, and then the clamping seat is clamped on the longitudinal beams on two sides of the existing building upright post, so that the transverse span section extends along the existing building cross beam; then fixing the two cross sections through the opposite-pulling screw rods, so that the existing cross beam of the building is accommodated in a space surrounded by the two cross sections to complete erection of the support frame; the existing structural body anchoring support base of the building is not needed, the structural strength of the building is not influenced, a support die frame is not needed to be erected, and the building structure has the advantages of being simple to erect, convenient to detach, and high in erecting and detaching efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic front view of an embodiment of the present invention;
fig. 2 is a schematic top view of the embodiment of the invention.
Reference numbers and corresponding part names in the drawings:
the method comprises the following steps of 1-formwork support, 2-support frame, 3-clamping seat, 4-vertical span section, 5-horizontal span section, 6-existing longitudinal beam of building, 7-opposite-pulling screw rod, 8-existing upright post of building, 9-existing cross beam of building, 10-bottom formwork, 11-adjusting cylinder, 12-pulling cable, 13-longitudinal rod, 14-first vertical plate, 15-support plate, 16-second vertical plate and 17-hydraulic cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
In a first aspect, the invention provides a cantilever formwork support structure, which comprises a formwork support frame 1 and two support frames 2; the supporting frame 2 comprises a clamping seat 3, a vertical span section 4 and a cross section 5, the clamping seat 3 is used for clamping an existing longitudinal beam 6 of a building, the lower end of the vertical span section 4 is fixedly connected with the clamping seat 3, one end of the cross section 5 is fixedly connected with the clamping seat 3, and one ends, far away from the clamping seat 3, of the two cross sections 5 can be connected through a split screw 7; the space defined by the two vertical span sections 4 is used for accommodating an existing building upright post 8 and an overhanging template, and the space defined by the two transverse span sections 5 is used for accommodating an existing building crossbeam 9; template 10 is fixed to template 1 up end, 1 one end of template frame has cup jointed regulation section of thick bamboo 11, regulation section of thick bamboo 11 with joint seat 3 is articulated, just template frame 1 can be followed one side of template frame board length direction rotates, regulation section of thick bamboo 11 can to erect span section 4 and rotate, template frame 1 both sides all through a plurality of cables 12 and corresponding erect span section 4 and can dismantle the connection.
Preferably, the vertical span section 4 inclines outwards to shorten the length of the guy cable 12 between the vertical span section 4 and the template frame 1, and further improve the stability of the cantilever template supporting structure.
Preferably, the two vertical span ends are fixedly connected through a plurality of longitudinal rods 13, and the longitudinal rods 13 are arranged at intervals along the length direction of the vertical span ends so as to connect the two support frames 2 into a whole through the longitudinal rods 13 and ensure that the support frames 2 have enough structural strength.
Preferably, the span sections 5 are plate-shaped, so that the connecting ends of the cantilever beam and the existing building cross beam 9 can be directly built between the two span sections 5, the erection workload of the cantilever beam template is reduced, and the building efficiency of the cantilever beam is improved. Moreover, the plate-shaped cross section 5 has high weight, and the bearing capacity of the support frame can be improved.
Specifically, the joint 3 includes a support plate 15 and a first vertical plate 14, one side of the support plate 15 is fixedly connected to one side of the first vertical plate 14, the support plate 15 extends along the length direction of the spanning section 5, and the first vertical plate 14 is opposite to the spanning section 5.
Preferably, joint seat 3 still includes second riser 16, second riser 16 is fixed backup pad 15 is kept away from one side of first riser 14, first riser 14 the second riser 16 with the space that backup pad 15 encloses is used for the joint to construct existing longeron 6 to ensure the stability of joint seat 3 and the existing longeron 6 joint of building, also can prevent that joint seat 3 and longeron joint from connecting back support frame 2 slope, does not need extra support frame 2 when the fixed bolster, further simplifies the process that the suspended formwork bearing structure erect.
Preferably, the first riser 14, the second riser 16 and the support plate 15 are integrally formed, so that the machining of the snap seat 3 can be simplified, and the sufficient structural strength of the snap seat 3 can be ensured.
Further, still include pneumatic cylinder 17, pneumatic cylinder 17 one end with erect span 4 articulatedly, the pneumatic cylinder 17 other end pass through the universal joint with template frame 1 connects, just pneumatic cylinder 17 is located erect span 4 and connect one side of template frame 1 to in the shrink and the expansion of automatic realization template frame 1, the stretch-draw of template frame 1 of being convenient for further improves the template bearing structure's that encorbelments efficiency, also be convenient for encorbelment simultaneously and accomodate, the transfer and transport of template.
Preferably, the length of the stay cable 12 is adjustable, so that the adaptability of the cantilever formwork supporting structure is improved.
When the formwork rack is used, the length of the stay cable 12 is firstly adjusted, so that the formwork rack 1 can rotate to a preset position under the action of gravity, and then the clamping seats 3 are clamped on longitudinal beams on two sides of an existing upright post 8 of a building, so that the cross span 5 extends along an existing cross beam 9 of the building; and the two cross sections 5 are fixed through the opposite-pulling screw rods 7, so that the existing cross beam 9 of the building is accommodated in a space surrounded by the two cross sections 5. After the spanning section 5 is fixed, the stay cables 12 are tensioned to suspend the formwork rack 1 outside the building according to the inclination angle of the cantilever beams through the stay cables 12, so that the formwork rack 1 is erected outside the building according to a set angle, and the downward movement of the formwork can be prevented; and one side of template frame 1 is articulated with joint seat 3 through adjusting a section of thick bamboo 11, can prevent template frame 1 horizontal hunting to ensure that the template bearing structure of encorbelmenting has sufficient stability.
Because be provided with the die block board 10 on the template frame 1, joint seat 3 card on the longeron of the existing stand 8 both sides of building, span section 5 and extend along the existing crossbeam 9 of building, and the space that two vertical span sections 4 enclose can hold the existing stand 8 of building and the template of encorbelmenting, the space that two horizontal span sections 5 enclose is used for holding the existing crossbeam 9 of building, can directly support the die carrier and erect the template of encorbelmenting on the crossbeam of fixed horizontal span section 5. Therefore, the present embodiment does not need to anchor the supporting seat at the existing structure of the building, does not cause influence to the structural strength of the building, does not need to set up a supporting die frame, and has the characteristics of simple setting up, convenient disassembly, building and high disassembly efficiency.
In addition, in the embodiment, the guy cables 12 connecting the two sides of the formwork rack 1 are detachably connected with the vertical span section 4, one side of the formwork rack 1 is rotatably connected with the adjusting cylinder 11, when the cantilever beam reaches the preset structural strength, the cantilever beam formwork is disassembled, then the guy cables 12 on one side of the formwork rack 1, which is far away from the adjusting cylinder 11, can be firstly disassembled, and at the moment, only one side of the formwork rack 1, which is connected with the adjusting cylinder 11, is kept in place under the tensile force of the guy cables 12; consequently, at the action of gravity lower mould grillage 1 along template frame 1 with adjust one side length direction rotation that a section of thick bamboo 11 is connected, then tighten up cable 12 and can upwards draw in template grillage 1, dismantle again to drawing screw rod 7, with joint seat 3 move up and can accomplish whole bearing structure's dismantlement, bearing structure's dismantlement is simple and convenient.
Example 2
The embodiment provides a cantilever formwork erection method, based on the cantilever formwork support structure and the working principle thereof in the embodiment 1, comprising the following steps:
s1, driving the hydraulic cylinder 17 to contract so as to change the included angle between the length direction of the adjusting cylinder 11 and the vertical span section 4, and keeping the template frame 1 vertical or parallel to the vertical span section 4;
s2, clamping the clamping seats 3 on longitudinal beams on two sides of the existing building upright post 8, and enabling the cross section 5 to extend along the existing building cross beam 9;
s3, projecting the lower part of one end of the cross section 5, which is far away from the clamping seat 3, out of the lower end of the existing cross beam 9 of the building, and fixing the two cross sections 5 through the opposite-pulling screw 7 to enable the existing cross beam 9 of the building to be accommodated in a space surrounded by the two cross sections 5;
s4, driving the hydraulic cylinder 17 to extend, and enabling the template frame 1 to rotate to the inclined position of the cantilever beam to be poured;
s5, adjusting the lengths of the pull cables 12 on the two sides of the formwork rack 1 to ensure that the bottom formwork 10 is inclined according to the inclination angle of the cantilever beam to be poured and the pull cables 12 stretch the formwork rack 1 according to the preset tension;
and S6, arranging overhanging side dies and end dies on the bottom die plate 10 to enable the end dies, the side dies, the bottom die, the cross section 5, the upper end surfaces of the longitudinal beams and the upper end surfaces of the cross beams to enclose an overhanging pouring die cavity.
When the overhanging formwork supporting structure is erected by the method, the existing structure body anchoring supporting seat of the building is not needed, the structural strength of the building is not influenced, a supporting formwork is not needed to be erected, and the method has the characteristics of simplicity in erection, convenience in detachment, and high erection and detachment efficiency.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A cantilever formwork support structure is characterized by comprising a formwork support frame (1) and two support frames (2);
the supporting frame (2) comprises a clamping seat (3), vertical cross sections (4) and cross sections (5), the clamping seat (3) is used for clamping and connecting an existing longitudinal beam (6) of a building, the lower ends of the vertical cross sections (4) are fixedly connected with the clamping seat (3), one ends of the cross sections (5) are fixedly connected with the clamping seat (3), and one ends, far away from the clamping seat (3), of the two cross sections (5) can be connected through split screw rods (7);
the space enclosed by the two vertical span sections (4) is used for accommodating an existing building upright post (8) and an overhanging template, and the space enclosed by the two transverse span sections (5) is used for accommodating an existing building crossbeam (9);
template (10) are fixed to template frame (1) up end, a regulation section of thick bamboo (11) has been cup jointed to template frame (1) one end, adjust a section of thick bamboo (11) with joint seat (3) are articulated, just template frame (1) can be followed one side of template frame board length direction rotates, adjust a section of thick bamboo (11) can to erect and stride section (4) and rotate, template frame (1) both sides all through a plurality of cables (12) and correspond erect and stride section (4) and can dismantle the connection.
2. An overhanging formwork support structure as claimed in claim 1, wherein the vertical span (4) is inclined outwardly.
3. A cantilever formwork support structure according to claim 1 or 2, wherein the two vertical span ends are fixedly connected by a plurality of longitudinal bars (13), the longitudinal bars (13) being arranged at intervals along the length direction of the vertical span ends.
4. An overhanging formwork support structure as claimed in claim 1, wherein the spanning section (5) is plate-like.
5. A cantilever formwork support structure according to claim 1, wherein the clamping seat (3) comprises a support plate (15) and a first vertical plate (14), one side of the support plate (15) is fixedly connected with one side of the first vertical plate (14), the support plate (15) extends along the length direction of the spanning section (5), and the first vertical plate (14) is opposite to the spanning section (5).
6. The formwork support structure of claim 5, wherein the clamping seat (3) further comprises a second vertical plate (16), the second vertical plate (16) is fixed on one side, away from the first vertical plate (14), of the support plate (15), and a space enclosed by the first vertical plate (14), the second vertical plate (16) and the support plate (15) is used for clamping an existing longitudinal beam (6) of the building.
7. An overhanging formwork support structure according to claim 6, wherein the first riser (14), the second riser (16) and the support plate (15) are integrally formed.
8. A cantilever formwork support structure according to claim 1, further comprising a hydraulic cylinder (17), wherein one end of the hydraulic cylinder (17) is hinged to the vertical span (4), the other end of the hydraulic cylinder (17) is connected to the formwork support (1) through a universal joint, and the hydraulic cylinder (17) is located at one side of the vertical span (4) connected to the formwork support (1).
9. An overhanging formwork support structure as claimed in claim 8 wherein the bracing wires (12) are adjustable in length.
10. A method for erecting an overhanging formwork rack (1), characterized in that the overhanging formwork support structure based on any one of claims 1-9 comprises the following steps:
s1, driving a hydraulic cylinder (17) to contract so as to change an included angle between the length direction of an adjusting cylinder (11) and the vertical span section (4) and enable the template frame (1) to be kept vertical or parallel to the vertical span section (4);
s2, clamping the clamping seat (3) on the longitudinal beams on two sides of the existing building upright post (8) to enable the cross section (5) to extend along the existing building cross beam (9);
s3, protruding the lower part of one end, far away from the clamping seat (3), of the cross section (5) out of the lower end of the existing building crossbeam (9), and fixing the two cross sections (5) through the opposite-pulling screw rods (7) to enable the existing building crossbeam (9) to be accommodated in a space surrounded by the two cross sections (5);
s4, driving a hydraulic cylinder (17) to extend, and enabling the formwork frame (1) to rotate to the inclined position of the cantilever beam to be poured;
s5, adjusting the lengths of the pull cables (12) on the two sides of the formwork frame (1), enabling the bottom formwork (10) to be inclined according to the inclination angle of the cantilever beam to be poured, and enabling the pull cables (12) to stretch the formwork frame (1) according to a preset pull force;
and S6, arranging overhanging side dies and end dies on the bottom die plate (10) to enable the end dies, the side dies, the bottom die, the cross span section (5), the upper end surfaces of the longitudinal beams and the upper end surfaces of the cross beams to enclose an overhanging pouring die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113565322B (en) | 2022-09-27 |
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