CN108331342B - Template system of arc beam and construction method thereof - Google Patents
Template system of arc beam and construction method thereof Download PDFInfo
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- CN108331342B CN108331342B CN201810459896.8A CN201810459896A CN108331342B CN 108331342 B CN108331342 B CN 108331342B CN 201810459896 A CN201810459896 A CN 201810459896A CN 108331342 B CN108331342 B CN 108331342B
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- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000013461 design Methods 0.000 claims abstract description 12
- 238000009415 formwork Methods 0.000 claims description 44
- 238000000034 method Methods 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000013507 mapping Methods 0.000 claims description 4
- 238000010146 3D printing Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 208000028755 loss of height Diseases 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000003796 beauty Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
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- 238000010079 rubber tapping Methods 0.000 description 1
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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
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/38—Arched girders or portal frames
- E04C3/44—Arched girders or portal frames of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
A template system of an arc beam and a construction method thereof are provided, wherein the template system comprises a beam bottom template structure, a beam side template structure and a first split bolt; the beam bottom template structure comprises a beam bottom template panel and a beam bottom secondary back edge; the long axis of the secondary back edge of the beam bottom is an arc line, and the radian of the arc line is matched with that of the long axis of the arc beam; the long axis of the beam bottom template panel is an arc line, and the radian of the arc line is matched with the radian of the long axis of the arc beam; the beam side template structure comprises a beam side template panel, a beam side secondary back edge and a beam side main back edge; the horizontal tangent plane of the beam side template panel is in an arc shape, and the radian of the arc is adapted to the radian of the longitudinal side surface of the corresponding side of the arc beam; the secondary back edges on the beam sides are provided with a group, and each secondary back edge on the beam sides is fixedly connected with the panel of the beam-side template; and a second pair of pull bolts are connected between the secondary back edges of two adjacent beam sides. The invention solves the technical problem that the forming effect and the construction quality can not meet the design requirements when the traditional construction method is used for constructing the circular arc beam.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a template system of a circular arc beam and a construction method thereof.
Background
With the vigorous development of the construction industry, in order to pursue the diversification of the structural forms of buildings, the number of arc-shaped buildings is increased day by day, and the arc lines look outside and provide a sense of beauty; when viewed from the inside, a centripetal feeling is given. But the arc building can ensure the beauty and increase the difficulty of construction. Especially, in the construction of the beam at the arc position, if the common method is used for construction from the construction paying-off to the formwork supporting, the forming effect and the construction quality can not meet the design requirements.
Disclosure of Invention
The invention aims to provide a template system of an arc beam and a construction method thereof, and aims to solve the technical problem that the forming effect and the construction quality of the arc beam constructed by the traditional construction method cannot meet the design requirements.
In order to achieve the purpose, the invention adopts the following technical scheme.
A template system of an arc beam is erected on a scaffold below the arc beam; the template system comprises a beam bottom template structure, a beam side template structure and a first split bolt; the beam bottom template structure comprises a beam bottom template panel and a beam bottom secondary back; only one group of beam bottom secondary back ridges are arranged on the scaffold at intervals in parallel along the transverse direction; the long axis of each beam bottom secondary back edge is an arc line, and the radian of the arc line is adapted to the radian of the long axis of the arc beam; the beam bottom die plate surface plate is horizontally lapped on the beam bottom secondary back ridge and is arranged along the full length of the bottom surface of the circular arc beam to be cast; the long axis of the beam bottom template panel is an arc line, and the radian of the arc line is matched with the radian of the long axis of the arc beam; the two beam side template structures are respectively arranged along the longitudinal side surfaces of the two sides of the circular arc beam to be cast in a through length mode; each beam side template structure comprises a beam side template panel, a beam side secondary back edge and a beam side main back edge; the horizontal tangent plane of the beam side template panel is in an arc shape, and the radian of the arc is adapted to the radian of the longitudinal side surface of the corresponding side of the arc beam to be poured; the secondary beam side back ridges are only one group and are arranged at intervals along the extension direction of the circular arcs of the horizontal tangent plane of the beam side template panel, and each secondary beam side back ridge is fixedly connected with the beam side template panel; a second counter-pulling bolt is vertically connected between every two adjacent beam side secondary back ridges at intervals; the beam side main back ridges are connected to the outer sides of the beam side secondary back ridges along the vertical direction at intervals in parallel, and each beam side main back ridge is in an arc shape; the first counter bolts are connected between the main back edges on the two sides of the arc beam and the corresponding beam sides.
Preferably, the cross section of the arc beam is T-shaped, and flange bottom template structures are erected below flanges at two sides of the arc beam; the flange bottom template structure comprises a flange bottom template panel, a flange secondary back edge and a flange main back edge; the side edge of the flange bottom template panel, which is close to one side of the circular arc beam web plate, is an arc line, and the side edge is tightly attached to the web plate of the circular arc beam; the flange secondary back edges are arranged at intervals along the transverse direction, and each flange secondary back edge is connected with the flange bottom formwork panel through a first fastener; the flange main back edges are provided with a group of flanges and arranged at the bottoms of the flange secondary back edges at intervals along the longitudinal direction, and each flange main back edge is correspondingly lapped on the scaffold; the flange on one side of the arc beam is connected with the floor slab, and a flange side template panel is erected on the outer side face of the flange on the other side of the arc beam; the bottom of edge of a wing side form panel is stupefied with the edge of a wing secondary back of the body bottom parallel and level that corresponds one side, and through the stupefied fixed connection of second fastener and edge of a wing secondary back of the body.
Preferably, the top of the beam side formwork structure is supported at the bottom of the flange bottom formwork panel; the bottom of the beam side template structure exceeds the bottom surface of the arc beam to be cast and is supported on a horizontal rod of a scaffold at the bottom of the beam side template structure, wherein the length of the exceeding part is 100-150 mm; the beam bottom template structure is laid on the horizontal rods of the scaffold at the bottom of the beam bottom template structure and is positioned between the beam side template structures at two sides.
Preferably, the distance between the side secondary back ridges of two adjacent beams is not more than 250mm; each beam side secondary back edge is bonded with the beam side template panel through bonding glue; through holes penetrating through the second split bolts are formed in the side face of the secondary back edge of the beam side at intervals along the vertical direction; the distance between two vertically adjacent second counter-pulling bolts is not more than 500mm; the beam side main back edge is a double steel pipe back; and two ends of the first pair of pull bolts correspondingly penetrate through a gap between two steel pipes of the main back edge of the beam side and are fixed.
Preferably, the beam bottom template panel is a 3D printing template, and the beam bottom template panel is correspondingly connected with the secondary beam bottom back edge by a third fastener.
Preferably, horizontal supports are correspondingly arranged at the tops of the vertical rods of the scaffold below the arc beam; each horizontal support is arc-shaped and is arranged along the long axis direction of the arc beam in a through manner; the horizontal supports are supported below the horizontal rods at the bottoms of the beam side template structure and the beam bottom template structure; the bottom of the vertical rod of the scaffold is correspondingly provided with a cushion block.
A construction method of a formwork system comprises the following steps.
Firstly, manufacturing a beam bottom template panel and a beam bottom secondary back ridge of a beam bottom template structure, and simultaneously manufacturing a beam side template panel, a beam side secondary back ridge and a beam side main back ridge of a beam side template structure;
step two, measuring and paying off: the construction setting of the arc beam is carried out on site by adopting a string standoff method;
step three, pre-assembling the beam side template structure: bonding the beam side secondary back edges to the outer sides of the beam side template panels, wherein the distance between every two adjacent beam side secondary back edges is not more than 250mm; inserting a second pair of pulling bolts into corresponding through holes on the secondary back edges on the adjacent beam sides, and screwing and fixing;
step four, erecting a beam bottom scaffold: erecting a scaffold below the arc beam to be cast, and correspondingly arranging a horizontal support at the top of the vertical rod below the arc beam;
step five, paving a beam bottom formwork structure: laying secondary back ridges of the beam bottom on horizontal rods at the tops of the horizontal supports, and fixing the secondary back ridges of the beam bottom on two sides by adopting connecting pieces to realize the radian of the secondary back ridges of the beam bottom; then placing the beam bottom formwork panel at a designed position according to a drawing, adjusting the beam bottom formwork panel and adopting a third fastener to connect the beam bottom secondary back ridge into a whole;
sixthly, mounting a beam side template structure at the longitudinal side position of the inner side of the arc beam; mounting the beam side template structure pre-assembled in the third step on the longitudinal side surface of the inner side of the circular arc beam in a beam formwork supporting mode, and fixing the beam side template structure after mounting;
binding steel bars of the arc beam;
step eight, constructing a beam side template structure at the position of the longitudinal side surface of the outer side of the arc beam: after the binding of the reinforcing steel bars is finished, mounting the beam side template structure which is pre-assembled in the third step at the longitudinal side position of the outer side of the circular arc beam, and rechecking the positions of the two beam side template structures after the beam side template structure is mounted; then, beam side main back ridges on two sides of the arc beam are installed and connected with a first counter bolt;
and step nine, pouring concrete.
Preferably, the method for manufacturing the beam-side template structure in the first step specifically comprises the following steps: manufacturing a secondary back edge of the beam side according to the height of the arc beam, wherein the length of the secondary back edge of the beam side exceeds the height of the arc beam by 100-150 mm; through holes are formed in the two side faces of the secondary back edge on the beam side and at the positions which are not less than 200mm away from the two ends; and manufacturing the beam side template panel according to the height and the length of the arc beam.
Preferably, the method for manufacturing the beam bottom formwork structure in the first step specifically comprises the following steps: building a BIM model of the circular arc beam through revit software, inputting various parameters of the circular arc beam into the BIM model, finally connecting the BIM model with a 3D printer through a revit output port, and completely printing the plate of the bottom beam mold according to the model parameters by using the 3D printer.
Preferably, the method for measuring and setting out the arc beam in the second step specifically comprises the following steps: arc c of arc beam in known design drawing 1 c n Making a chord c 1 c n Parallel line a of 1 a n And b 1 b n A is to 1 a n Is equally divided into a plurality of sections which are respectively a 1 a 2 、a 2 a 3 、……、a n-1 a n B is mixing 1 b n Is equally divided into a plurality of sections respectively b 1 b 2 、b 2 b 3 、……、b n-1 b n Is connected to a 1 b 1 、a 2 b 2 、……、a n b n Make out height h 1 、h 2 、……、h n Loss of height h 1 、h 2 、……、h n Respectively with arc c 1 c n Cross at c 1 、c 2 、……、c n (ii) a However, the device is not suitable for use in a kitchenThen c is 1 、c 2 、……、c n The coordinates are positioned on the construction site and are sequentially connected to form an arc curve, and the paying-off is completed.
Preferably, the method for measuring and setting out the arc beam in the second step adopts the optimized height losing h n Is calculated with 1 a n 、b 1 b n The position determination method of (2) in combination: firstly, a computer mapping method is used for directly measuring the height h of the loss 1 、h 2 、……、h n Then positioning according to the axle network in the design drawing to find out the point a 1 、a 2 、……、a n Respectively finding out the position relation between the axis of the axle net and the axis of the axle net 1 、b 2 、……、b n Respectively related to the position of axial line in axial network, and then releasing a at construction site 1 a n 、b 1 b n Two line segments, then according to a 1 a n 、b 1 b n And h n Wire, arc c of positioning arc beam 1 c n A wire.
Compared with the prior art, the invention has the following characteristics and beneficial effects.
1. The template system adopts the arc-shaped beam bottom template structure and the arc-shaped beam side template structure, wherein the beam bottom template structure and the beam side template structure are designed according to the structural parameters of the arc beam to be constructed, so that the molding quality of the arc beam after concrete pouring is greatly ensured.
2. In the beam side template structure, the beam side secondary back ridges are adhered to the beam side template panel by using adhesive, and the second counter bolts are connected between the adjacent beam side secondary back ridges.
3. According to the construction method, the concrete is normally poured after measurement and setting-out, bottom mould laying, side mould adding and mould closing are carried out, finally, after the strength meets the requirement of a condition, the arc beam formwork is disassembled, the formwork is disassembled according to the principle of first assembling and then disassembling, and the formwork is moved to the upper layer for recycling, so that the technical problem that the forming effect and the construction quality of the arc beam cannot meet the design requirements in the traditional construction method is solved.
4. In the construction method, the construction paying-off of the arc beam is carried out on site by adopting a string support distance method, and the arc c is determined 1 c n In (c) 1 、c 2 、……、c n At the chord c 1 c n The outside is made into a parallel line a 1 a n And b 1 b n And the coordinates are determined by utilizing two parallel lines, so that the accuracy of the coordinates is ensured.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the arrangement of the arc beam in the present invention.
Fig. 2 is a schematic cross-sectional view of a circular arc beam in the present invention.
FIG. 3 is a schematic diagram of the structure of the template system of the present invention.
Fig. 4 is a detailed structure diagram of a bottom beam formwork structure and a side beam formwork structure of the formwork system of the present invention.
Fig. 5 is a front view schematically illustrating a connection structure of a beam-side formwork panel and a beam-side secondary back ridge according to the present invention.
Fig. 6 is a schematic horizontal sectional view of a connection structure of a beam-side formwork panel and a beam-side secondary back ridge according to the present invention.
Fig. 7 is a side view schematically showing a connection structure of a beam-side formwork panel and a beam-side secondary back ridge according to the present invention.
FIG. 8 is a schematic view of the measurement and the setting-out of the arc beam in the construction method of the present invention.
Reference numerals: 1-arc beam, 2-scaffold, 2.1-horizontal rod, 2.2-vertical rod, 3-first counter bolt, 4-beam bottom template panel, 5-beam bottom secondary back edge, 6-beam side template panel, 7-beam side secondary back edge, 8-beam side main back edge, 9-second counter bolt the flange-type formwork comprises a 10-flange bottom formwork panel, an 11-flange secondary back edge, a 12-flange primary back edge, a 13-first fastener, a 14-flange side formwork panel, a 15-second fastener, a 16-through hole, a 17-third fastener, an 18-horizontal support and a 19-cushion block.
Detailed Description
As shown in fig. 1-7, the formwork system of the arc beam is erected on the scaffold 2 below the arc beam 1; the template system comprises a beam bottom template structure, a beam side template structure and a first split bolt 3; the beam bottom template structure comprises a beam bottom template surface plate 4 and a beam bottom secondary back edge 5; the beam bottom secondary back edges 5 are provided with a group and are arranged on the scaffold 2 at intervals along the transverse direction; the long axis of each beam bottom secondary back edge 5 is an arc line, and the radian of the arc line is matched with the radian of the long axis of the arc beam 1; the beam bottom template panel 4 is horizontally erected on the beam bottom secondary back ridge 5 and is arranged along the whole length of the bottom surface of the circular beam 1 to be cast; the long axis of the beam bottom die plate surface plate 4 is an arc line, and the radian of the arc line is adapted to the radian of the long axis of the arc beam 1; the two beam side template structures are respectively arranged along the longitudinal side surfaces of the two sides of the circular arc beam 1 to be cast; each beam side template structure comprises a beam side template panel 6, a beam side secondary back edge 7 and a beam side main back edge 8; the horizontal tangent plane of the beam side template panel 6 is in an arc shape, and the radian of the arc is adapted to the radian of the longitudinal side surface of the side corresponding to the arc beam 1 to be poured; the secondary beam side back edges 7 are only one group and are arranged at intervals along the arc extending direction of the horizontal tangent plane of the beam side template panel 6, and each secondary beam side back edge 7 is fixedly connected with the beam side template panel 6; a second counter-pulling bolt 9 is vertically connected between every two adjacent beam side secondary back ridges 7 at intervals; the beam side main back edges 8 are only one group and are connected to the outer sides of the beam side secondary back edges 7 at intervals in parallel along the vertical direction, and each beam side main back edge 8 is in an arc shape; the first counter bolts 3 are connected between the main back edges 8 at the two sides of the arc beam 1 and the corresponding beam side.
In this embodiment, each component in the template system is manufactured by a shaping process.
In the embodiment, the cross section of the arc beam 1 is in a T shape, and flange bottom template structures are erected below flanges at two sides of the arc beam 1; the flange bottom template structure comprises a flange bottom template panel 10, a flange secondary back edge 11 and a flange main back edge 12; the side edge of the flange bottom template panel 10 close to one side of the web plate of the arc beam 1 is an arc line, and the side edge is tightly attached to the web plate of the arc beam 1; the flange secondary back edges 11 are arranged at intervals along the transverse direction, and each flange secondary back edge 11 is connected with the flange bottom formwork panel 10 through a first fastening piece 13; the flange main back edges 12 are arranged at the bottom of the flange secondary back edge 11 at intervals along the longitudinal direction, and each flange main back edge 12 is correspondingly erected on the scaffold 2; the flange on one side of the arc beam 1 is connected with the floor slab, and the flange side template panel 14 is erected on the outer side face of the flange on the other side of the arc beam 1; the bottom of the flange side template panel 14 is flush with the bottom of the flange secondary back edge 11 on the corresponding side, and is fixedly connected with the flange secondary back edge 11 through a second fastener 15.
In this embodiment, the top of the beam-side formwork structure is supported at the bottom of the flange bottom formwork panel 10; the bottom of the beam side template structure exceeds the bottom surface of the arc beam 1 to be cast and is supported on a horizontal rod 2.1 of a scaffold 2 at the bottom of the beam side template structure, wherein the length of the exceeding part is 100-150 mm; the beam bottom template structure is laid on the horizontal rods 2.1 of the scaffold 2 at the bottom of the beam bottom template structure and is positioned between the beam side template structures at two sides. In the embodiment, the distance between the secondary back edges 7 of two adjacent beams is not more than 250mm; wherein each beam side secondary back edge 7 is bonded with the beam side template panel 6 through bonding glue; through holes 16 penetrating through the second split bolts 9 are arranged on the side surface of the beam side secondary back edge 7 at intervals along the vertical direction; the distance between two vertically adjacent second counter stay bolts 9 is not more than 500mm; the beam side main back edge 8 is a double steel pipe back edge; and two ends of the first pair of pull bolts 3 correspondingly penetrate through a gap between two steel pipes of the beam side main back ridge 8 and are fixed.
In this embodiment, there are multiple groups of the second counter bolts 9, wherein each group of the second counter bolts 9 is vertically arranged between the secondary back ridges 7 on the side of the adjacent beams in parallel at intervals; the through hole 16 is punched on the side surface of the secondary back edge 7 of the beam side in advance by a machine, and the hole width is 16mm; in order to ensure the normal insertion of the second counter stay bolts 9 and avoid the collision of the same row of bolts, the hole sites of two adjacent groups of the second counter stay bolts 9 are arranged in a staggered way; according to the beam height of the arc beam 1, the hole positions in the upper row and the lower row in the hole positions of the second counter-pull bolts 9 in the same group are not more than 500mm; of the hole sites of two adjacent groups of second counter stay bolts 9, the hole sites of two horizontally corresponding second counter stay bolts 9 are vertically spaced by 50mm.
In the embodiment, the beam bottom template panel 4 is a 3D printing template, data such as radian and the like are directly input into a 3D printer, and a 3D finished product is printed by adding template materials; and the beam bottom formwork panel 4 and the beam bottom secondary back edge 5 are correspondingly connected by a third fastener 17.
In this embodiment, the top of the upright 2.2 of the scaffold 2 below the arc beam 1 is correspondingly provided with a horizontal support 18; wherein, each horizontal support 18 is arc-shaped and is arranged along the long axis direction of the arc beam 1; the horizontal supports 18 are arranged below the horizontal rods 2.1 at the bottoms of the beam side template structure and the beam bottom template structure; the bottom of the upright 2.2 of the scaffold 2 is correspondingly padded with a cushion block 19.
In this embodiment, scaffold frame 2 adopts fastener type steel pipe, and two pole settings 2.2 are established to the support at the bottom of arc roof beam 1, and a top back of the body level supports 18, between the horizon bar 2.1 of roof beam bottom template structure bottom, lie in the stupefied 5 of roof beam bottom secondary back of the body bottom and be equipped with the main back of the body stupefied of the roof beam bottom along vertical parallel interval, and the stupefied adoption circular steel tube of the main back of the body of the roof beam bottom makes. After the flange bottom template structure and the beam bottom template structure are leveled by the leveling instrument, the joints of the horizontal rods 2.1 and the vertical rods 2.2 are locked by the cross fasteners, and the tightening torque moment is not less than 40 N.m and not more than 65 N.m.
In the embodiment, cross fasteners are fixed at the bottom of the beam bottom mold plate panel 4 and outside of two beam bottom secondary back edges 5 located at the outermost side to realize the radian of the beam bottom secondary back edges 5, and the 3D printed beam bottom mold plate panel 4 is placed at a specified position according to a manufacturing label and a drawing; after the fine adjustment of the position of the beam bottom formwork panel 4 is accurately carried out through the suspension wire pendant on site, the beam bottom formwork panel 4 and the beam bottom secondary back ridge 5 are nailed into a whole by wood square nails on the beam bottom secondary back ridge 5 at the bottom.
In this embodiment, the first fastener 13, the second fastener 15, and the third fastener 17 are all wood square nails.
Of course, in other embodiments, the first fastener 13, the second fastener 15 and the third fastener 17 may also be other types of steel nails such as screws or self-tapping nails.
The construction method of the formwork system comprises the following steps.
Firstly, a beam bottom formwork panel 4 and a beam bottom secondary back ridge 5 of a beam bottom formwork structure are manufactured, and a beam side formwork panel 6, a beam side secondary back ridge 7 and a beam side main back ridge 8 of a beam side formwork structure are manufactured simultaneously.
Step two, measuring and paying off: the construction setting-out of the arc beam 1 is carried out on site by adopting a string span method, as shown in figure 8.
Step three, pre-assembling the beam side template structure: bonding the beam side secondary back edges 7 to the outer sides of the beam side template panels 6, wherein the distance between every two adjacent beam side secondary back edges 7 is not more than 250mm; and (3) inserting the second pair of pull bolts 9 into corresponding through holes 16 on the secondary back edges 7 of the adjacent beam sides, and screwing and fixing.
Step four, erecting a beam bottom scaffold 2: the scaffold 2 is erected below the arc beam 1 to be cast, and the horizontal supports 18 are correspondingly arranged on the tops of the vertical rods 2.2 of the scaffold 2 below the arc beam 1.
Step five, paving a beam bottom formwork structure: laying secondary back ridges 5 of the beam bottom on the horizontal rods 2.1 at the tops of the horizontal supports 18, and fixing the secondary back ridges 5 of the beam bottom on two sides by adopting connecting pieces to realize the radian of the secondary back ridges 5 of the beam bottom; then, the beam bottom template panel 4 is placed at a designed position according to a drawing, the beam bottom template panel 4 is adjusted, and the beam bottom secondary back ridge 5 is connected into a whole by adopting a third fastener 17.
Sixthly, mounting a beam side template structure at the longitudinal side position of the inner side of the circular arc beam 1, wherein the connecting side of the circular arc beam 1 and the floor slab is the inner side; and (3) mounting the beam side template structure pre-assembled in the third step on the longitudinal side surface of the inner side of the circular arc beam 1 according to a beam formwork supporting mode, and fixing the beam side template structure after the mounting is finished.
Binding the reinforcing steel bars of the arc beam 1; after the steel bars are bound, cleaning up the garbage in the beam side template structure by using a blower or a sawdust dust collector.
Step eight, constructing a beam side template structure on the longitudinal side surface of the outer side of the circular arc beam 1; after the binding of the steel bars is finished, mounting the beam side template structure which is pre-assembled in the third step at the longitudinal side position of the outer side of the circular arc beam 1, and after the beam side template structure is mounted, performing suspension wire rechecking on the position of the beam side template structure; and then, beam side main back ridges 8 on two sides of the arc beam 1 are installed and connected with the first pair of pull bolts 3, and adjustment is performed by adjusting the first pair of pull bolts 3 when errors exist.
And step nine, pouring concrete.
In this embodiment, the method for manufacturing the beam-side template structure in the first step specifically includes: manufacturing a beam side secondary back ridge 7 according to the height of the arc beam 1, wherein the length of the beam side secondary back ridge 7 exceeds the height of the arc beam 1 by 100-150 mm; through holes 16 are formed in the two side surfaces of the beam side secondary back edge 7 at positions which are not less than 200mm away from the two ends; manufacturing a beam side template panel 6 according to the height and the length of the arc beam 1; in this embodiment, the method for manufacturing the beam bottom template structure in the first step specifically includes: the BIM model of the arc beam 1 is established through revit software, and all parameters of the arc beam 1 are as follows: including the cross sectional dimension, length, the radian of circular arc roof beam 1, the floor thickness of locating, the vertical load-bearing structure's that meets with circular arc roof beam 1 cross sectional dimension, the spatial localization etc. input BIM model that circular arc roof beam 1 was located is finally connected with the 3D printer through the revit output port, utilizes the 3D printer to print roof beam bottom template panel 4 is complete according to the model parameter.
In this embodiment, the method for measuring and setting out the arc beam 1 in the second step specifically includes: due to the radian, length and positioning (arc c) of the arc beam 1 1 c n ) Are known in the design drawings, namely the circular arc c of the circular arc beam 1 in the known design drawings 1 c n First, a chord c is formed in the electronic design drawing 1 c n Parallel line a of 1 a n And b 1 b n To ensure accuracy; a is to be 1 a n Is equally divided into a plurality of sections which are respectively a 1 a 2 、a 2 a 3 、……、a n-1 a n B is to be 1 b n Is equally divided into a plurality of sections which are respectively b 1 b 2 、b 2 b 3 、……、b n-1 b n Is connected to a 1 b 1 、a 2 b 2 、……、a b b n Height of action and loss h 1 、h 2 、……、h n Loss of height h 1 、h 2 、……、h n Respectively with arc c 1 c n Intersect at c 1 、c 2 、……、c n (ii) a Then c is mixed 1 、c 2 、……、c n The coordinates are positioned on the construction site and are sequentially connected to form an arc curve, and the paying-off is completed. A in the drawing 1 ～a n 、b 1 ～b n The more points (c) are, the obtained c 1 ～c n The more points, the higher the accuracy of the field location.
In the second step, the method for measuring and paying off the arc beam 1 adopts the optimized height losing h n Is calculated with 1 a n 、b 1 b n The method for determining the position comprises the following steps: firstly, the loss height h is directly measured out by using a computer mapping method 1 、h 2 、……、h n Then positioning according to the axle network in the design drawing to find out the point a 1 、a 2 、……、a n Respectively and the position relation between the axis of the axle network, and b 1 、b 2 、……、b n Respectively related to the position of axial line in axial network, and then releasing a at construction site 1 a n 、b 1 b n Two line segments (the axis network has been paid out according to the reference point given by the surveying and mapping institute), then according to a 1 a n 、b 1 b n And h n Wire, positioning arc c of arc beam 1 1 c n A wire.
In this embodiment, the specific method for performing the on-site paying-off in the second step is as follows: according to the arc c of the arc beam 1 in the vacant site 1 c n The line is unwrapped wire, arranges the black line department in with roof beam side form structure, transfers convex roof beam side form structure to the black line position through the nut on the first split bolt 3 according to the radian, guarantees that the radian of template structure suits with the radian of circular arc roof beam 1.
Claims (8)
1. A construction method of a template system of a circular arc beam is characterized in that,
the template system of the arc beam is erected on the scaffold (2) below the arc beam (1); the template system comprises a beam bottom template structure, a beam side template structure and a first split bolt (3); the method is characterized in that: the beam bottom template structure comprises a beam bottom template panel (4) and a beam bottom secondary back edge (5); only one group of beam bottom secondary back ridges (5) are arranged on the scaffold (2) at intervals in parallel along the transverse direction; the long axis of each beam bottom secondary back edge (5) is an arc line, and the radian of the arc line is matched with the radian of the long axis of the arc beam (1); the beam bottom template panel (4) is horizontally erected on the secondary beam bottom back edge (5) and is arranged along the whole length of the bottom surface of the circular beam (1) to be cast; the long axis of the beam bottom die plate surface plate (4) is an arc line, and the radian of the arc line is adapted to the radian of the long axis of the arc beam (1); the two beam side template structures are respectively arranged along the longitudinal side surfaces of the two sides of the circular arc beam (1) to be poured in a through length mode; each beam side template structure comprises a beam side template panel (6), a beam side secondary back edge (7) and a beam side main back edge (8); the horizontal tangent plane of the beam side template panel (6) is arc-shaped, and the radian of the arc is adapted to the radian of the longitudinal side surface of the corresponding side of the arc beam (1) to be poured; the secondary beam side back edges (7) are only one group and are arranged at intervals along the arc extending direction of the horizontal tangent plane of the beam side template panel (6), and each secondary beam side back edge (7) is fixedly connected with the beam side template panel (6); a second pair of pulling bolts (9) are vertically connected between every two adjacent beam side secondary back edges (7) at intervals; the beam side main back edges (8) are provided with a group and are connected to the outer sides of the beam side secondary back edges (7) in parallel at intervals along the vertical direction, and each beam side main back edge (8) is in an arc shape; the first counter bolts (3) are connected between the main back edges (8) at the beam sides corresponding to the two sides of the arc beam (1);
the cross section of the arc beam (1) is T-shaped, and a flange bottom template structure is erected below flanges at two sides of the arc beam (1); the flange bottom template structure comprises a flange bottom template panel (10), a flange secondary back edge (11) and a flange main back edge (12); the side edge of the flange bottom template panel (10) close to one side of the web plate of the arc beam (1) is an arc line, and the side edge is tightly attached to the web plate of the arc beam (1); the flange secondary back edges (11) are arranged at intervals along the transverse direction, and each flange secondary back edge (11) is connected with the flange bottom formwork panel (10) through a first fastener (13); the flange main back edges (12) are provided with a group and are longitudinally arranged at intervals at the bottom of the flange secondary back edge (11), and each flange main back edge (12) is correspondingly erected on the scaffold (2); the flange on one side of the arc beam (1) is connected with the floor slab, and the flange side template panel (14) is erected on the outer side face of the flange on the other side of the arc beam (1); the bottom of the flange side template panel (14) is flush with the bottom of the flange secondary back edge (11) on the corresponding side, and is fixedly connected with the flange secondary back edge (11) through a second fastening piece (15);
the method comprises the following steps:
firstly, a beam bottom template panel (4) and a beam bottom secondary back edge (5) of a beam bottom template structure are manufactured, and a beam side template panel (6), a beam side secondary back edge (7) and a beam side main back edge (8) of a beam side template structure are manufactured simultaneously;
step two, measuring and paying off: the construction paying-off of the arc beam (1) adopts a string standoff method to carry out on-site paying-off;
step three, pre-assembling the beam side template structure: bonding the beam side secondary back edges (7) to the outer sides of the beam side template panels (6), wherein the distance between every two adjacent beam side secondary back edges (7) is not more than 250mm; inserting a second pair of pulling bolts (9) into corresponding through holes (16) on the secondary back edges (7) on the adjacent beam sides, and screwing and fixing;
step four, erecting a beam bottom scaffold (2): a scaffold (2) is erected below the arc beam (1) to be cast, and a horizontal support (18) is correspondingly arranged at the top of the upright rod (2.2) below the arc beam (1);
step five, paving a beam bottom formwork structure: laying secondary back ridges (5) of the beam bottom on horizontal rods (2.1) at the tops of the horizontal supports (18), and fixing the secondary back ridges (5) of the beam bottom on two sides by adopting connecting pieces to realize the radian of the secondary back ridges (5) of the beam bottom; then placing the beam bottom template panel (4) at a designed position according to a drawing, adjusting the beam bottom template panel (4) and connecting the beam bottom secondary back edge (5) into a whole by adopting a third fastener (17);
sixthly, mounting a beam side template structure at the longitudinal side position of the inner side of the arc beam (1); mounting the beam side template structure pre-assembled in the third step on the longitudinal side surface of the inner side of the circular arc beam (1) according to a beam formwork supporting mode, and fixing the beam side template structure after mounting;
binding steel bars of the arc beam (1);
step eight, constructing a beam side template structure at the position of the outer longitudinal side surface of the circular arc beam (1): after the binding of the steel bars is finished, mounting the beam side template structure which is pre-assembled in the third step at the longitudinal side position of the outer side of the circular arc beam (1), and rechecking the positions of the two beam side template structures after the beam side template structure is mounted; then beam side main back ridges (8) on two sides of the arc beam (1) are installed and connected with a first pair of pull bolts (3);
and step nine, pouring concrete.
2. The construction method of the formwork system for the circular arc beam according to claim 1, wherein: the top of the beam side template structure is supported at the bottom of the flange bottom template panel (10); the bottom of the beam side template structure exceeds the bottom surface of the arc beam (1) to be cast and is supported on a horizontal rod (2.1) of a scaffold (2) at the bottom of the beam side template structure, wherein the length of the exceeding part is 100-150 mm; the beam bottom template structure is laid on a horizontal rod (2.1) of a scaffold (2) at the bottom of the beam bottom template structure and is positioned between beam side template structures on two sides.
3. The construction method of the formwork system for the circular arc beam according to claim 2, wherein: the distance between the secondary back edges (7) of two adjacent beam sides is not more than 250mm; wherein, each beam side secondary back edge (7) is bonded with the beam side template panel (6) through bonding glue; through holes (16) penetrating through the second split bolts (9) are vertically arranged on the side surface of the secondary back edge (7) of the beam side at intervals; the distance between two vertically adjacent second counter pull bolts (9) is not more than 500mm; the beam side main back edge (8) is a double steel pipe back edge; and two ends of the first pair of pull bolts (3) correspondingly penetrate through a gap between two steel pipes of the beam side main back edge (8) and are fixed.
4. The construction method of the formwork system for the circular arc beam according to claim 2, wherein: the beam bottom template panel (4) is a 3D printing template, and the beam bottom template panel (4) is correspondingly connected with the beam bottom secondary back edge (5) through a third fastener (17).
5. The construction method of the template system of the circular arc beam as claimed in claim 2, wherein: the top of a vertical rod (2.2) of the scaffold (2) below the arc beam (1) is correspondingly provided with a horizontal support (18); each horizontal support (18) is arc-shaped and is arranged along the long axis direction of the arc beam (1) in a whole length manner; the horizontal supports (18) are arranged below the horizontal rods (2.1) at the bottoms of the beam side template structure and the beam bottom template structure; the bottom of the vertical rod (2.2) of the scaffold (2) is correspondingly provided with a cushion block (19).
6. The construction method of the template system of the circular arc beam according to claim 1, characterized in that: the method for manufacturing the beam side template structure in the first step specifically comprises the following steps: manufacturing a beam side secondary back ridge (7) according to the height of the arc beam (1), wherein the length of the beam side secondary back ridge (7) exceeds the height of the arc beam (1) by 100-150 mm; through holes (16) are formed in the positions, which are away from the two ends and not less than 200mm, on the two side surfaces of the beam side secondary back edge (7); manufacturing a beam side template panel (6) according to the height and the length of the arc beam (1); the method for manufacturing the beam bottom template structure in the first step specifically comprises the following steps: the BIM model of the arc beam (1) is established through revit software, various parameters of the arc beam (1) are input into the BIM model, and finally the BIM model is connected with a 3D printer through a revit output port, and the beam bottom template panel (4) is completely printed by the 3D printer according to the model parameters.
7. The construction method of the formwork system for the circular arc beam according to claim 1, wherein: the method for measuring and setting out the arc beam (1) in the second step specifically comprises the following steps: the arc c of the arc beam (1) in the known design drawing 1 c n Making a chord c 1 c n Parallel line a of 1 a n And b 1 b n A is to 1 a n Is divided into several equal segmentsAre respectively a 1 a 2 、a 2 a 3 、……、a n-1 a n B is mixing 1 b n Is equally divided into a plurality of sections which are respectively b 1 b 2 、b 2 b 3 、……、b n-1 b n Is connected to a 1 b 1 、a 2 b 2 、……、a n b n Height of action and loss h 1 、h 2 、……、h n Loss of height h 1 、h 2 、……、h n Respectively with arc c 1 c n Intersect at c 1 、c 2 、……、c n (ii) a Then c is mixed 1 、c 2 、……、c n The coordinates are positioned on the construction site and are sequentially connected to form an arc curve, and the paying-off is completed.
8. The construction method of the formwork system for the circular arc beam according to claim 1, wherein: in the second step, the optimized height losing h is adopted in the method for measuring and paying off the arc beam (1) n Is calculated with 1 a n 、b 1 b n The method of combined location determination of (1): firstly, the loss height h is directly measured out by using a computer mapping method 1 、h 2 、……、h n Then positioning according to the axle network in the design drawing to find out the point a 1 、a 2 、……、a n Respectively and the position relation between the axis of the axle network, and b 1 、b 2 、……、b n Respectively related to the position of axial line in axial network, and then releasing a at construction site 1 a n 、b 1 b n Two line segments, then according to a 1 a n 、b 1 b n And h n Line, arc c of positioning arc beam (1) 1 c n A wire.
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| CN110397270A (en) * | 2019-06-13 | 2019-11-01 | 中国建筑第四工程局有限公司 | Beam forms and its installation and method for supporting outside a kind of big sectional dimension arc |
| CN110453916A (en) * | 2019-08-16 | 2019-11-15 | 杭州昂创科技有限公司 | By the arc beam construction method of adjustable arc beams regularization formwork erecting structure |
| CN113482326A (en) * | 2021-06-01 | 2021-10-08 | 上海宝冶集团有限公司 | Method for erecting arc formwork of bare concrete diaphragm wall |
| CN113338641B (en) * | 2021-06-21 | 2023-01-31 | 中建八局广西建设有限公司 | Arc-shaped sealing beam paying-off method in high-rise building |
| CN116335393B (en) * | 2023-05-31 | 2023-09-19 | 北京市第三建筑工程有限公司 | Construction method of bare concrete hyperboloid beam structure based on wood formwork |
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| CN201428240Y (en) * | 2009-04-09 | 2010-03-24 | 温州建设集团公司 | Template with arc steps |
| CN106592966A (en) * | 2016-12-28 | 2017-04-26 | 河北建筑工程学院 | Support-beam-plate-free post-cast strip formwork system and construction method thereof |
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| WO2013185277A1 (en) * | 2012-06-11 | 2013-12-19 | 浙江省建工集团有限责任公司 | Constructing method for concrete cylinder of construction steel bar of high-rise steel structure |
| CN105971273B (en) * | 2016-06-23 | 2018-01-16 | 杭州江润科技有限公司 | Based on sizing Quick Release aluminum alloy pattern plate arc cast-in-situ concrete beam and construction method |
| CN106013787B (en) * | 2016-07-11 | 2018-09-04 | 中国建筑第八工程局有限公司 | Cast-in-place concrete beam template tool-type reinforcement system and its construction technology |
| CN206438769U (en) * | 2016-11-16 | 2017-08-25 | 大连三川建设集团股份有限公司 | It is a kind of to prevent that cast-in-situ concrete beam bottom from rising the structure of mould |
| CN208220204U (en) * | 2018-05-15 | 2018-12-11 | 中国建筑第二工程局有限公司 | Template system of circular arc roof beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201428240Y (en) * | 2009-04-09 | 2010-03-24 | 温州建设集团公司 | Template with arc steps |
| CN106592966A (en) * | 2016-12-28 | 2017-04-26 | 河北建筑工程学院 | Support-beam-plate-free post-cast strip formwork system and construction method thereof |
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