CN114427295A - Pre-buried ground anchor pulling connection and holding column combined ultrahigh and ultralimit formwork system and construction method thereof - Google Patents
Pre-buried ground anchor pulling connection and holding column combined ultrahigh and ultralimit formwork system and construction method thereof Download PDFInfo
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- CN114427295A CN114427295A CN202111658504.9A CN202111658504A CN114427295A CN 114427295 A CN114427295 A CN 114427295A CN 202111658504 A CN202111658504 A CN 202111658504A CN 114427295 A CN114427295 A CN 114427295A
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- 238000009415 formwork Methods 0.000 title claims abstract description 69
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/02—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for rooms as a whole by which walls and floors are cast simultaneously, whole storeys, or whole buildings
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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Abstract
The mold frame system comprises an ultrahigh and ultralimit mold frame, the ground structure comprises frame columns on two sides, frame beams on each layer erected on the frame columns and structure plates on each layer erected on longitudinal frame beams, the outer edge of a high-rise building panel is longitudinally overhung relative to the outer edge of a middle-rise building panel, the overhung part is a high-rise overhung plate, the frame columns comprise side columns of the ground structure, the ultrahigh and ultralimit mold frame comprises standard support frames, side column frames and an embedded ground anchor pull-connection frame, the side column frames are enclosed around the side columns and fixedly connected with the standard support frames around the side columns in a pull-connection mode, and the embedded ground anchor pull-connection frame is vertically arranged along each layer on the low-rise building panel and the middle-rise building panel. The invention designs an effective pulling connection mode of the overrun beam formwork and the support frame body, and the overrun beam formwork, the embedded ground anchor pulling connection frame and the column embracing frame are effectively connected into a whole to jointly act, so that a stable support system is formed, and the construction safety of the support frame body is ensured.
Description
Technical Field
The invention relates to an ultrahigh and ultralimit formwork system, in particular to an embedded ground anchor pull-connection and embracing column combined ultrahigh and ultralimit formwork system and a construction method thereof.
Background
With the vigorous development of the construction industry, polygonal buildings are increasingly increased in pursuit of diversification of the structural forms of the buildings. But the building is beautiful and the difficulty of structure construction is increased. When the height of the ultrahigh formwork is higher, the height-width ratio of the frame body is not more than 1:3 according to the standard requirement, and the width of the frame body is also wider, namely the frame body needs to be provided with an empty frame with a certain width on the outer side of the structure to meet the standard requirement. When the engineering field is narrow, the width from the construction paying-off to the formwork erection cannot meet the construction specification requirement by adopting a common method, and manpower and material resources are wasted.
Disclosure of Invention
The invention aims to provide an embedded ground anchor pull-in and embracing column combined ultrahigh and ultralimit formwork system and a construction method thereof, and aims to solve the technical problems that when a combined ultrahigh formwork with an ultrahigh top plate and an ultralimit beam in cantilever is constructed, when the height is too high and the construction conditions in the width direction are limited, an empty frame cannot be erected according to the standard requirements, and manpower and material resources are wasted.
In order to achieve the purpose, the invention adopts the following technical scheme:
a built-in ground anchor is pulled and connected and a pole is held and made up the die carrier system of the superelevation and the superelevation limit, the said die carrier system includes the superelevation and the superelevation limit die carrier, the said above-ground structure includes the frame post of both sides, each layer of frame beam set up on the frame post and each layer of structural slab set up on the longitudinal frame beam, the said structural slab includes the low floor panel, high floor panel and sets up the middle floor panel between the two, the said middle floor panel includes the standard floor and n layers of ladder slope folded plate, wherein the height difference of the low floor panel and high floor panel is not less than 30 meters, n is greater than or equal to 1, the structural outer edge of the high floor panel does not exceed the structural outer edge of the low floor panel longitudinally, the structural outer edge of the high floor panel is overhung longitudinally relative to the structural outer edge of the middle floor panel, the overhanging part is the overhanging plate of the high floor, the said frame post includes the side post of the structure above ground, the high-rise cantilever plate is erected in the arrangement range of the side column,
the ultrahigh and ultra-limited formwork is erected from the upper side of the low-rise floor panel to the upper side in full and props against the lower sides of the high-rise floor panel and the high-rise cantilever plate, the ultrahigh and ultra-limited formwork comprises a standard support frame, a side column frame and a pre-buried ground anchor connecting frame, the standard support frame is encrypted in the lower side range of the high-rise cantilever plate and two surrounding span ranges to form a cantilever support frame,
the side column frame is enclosed around the side column and is fixedly connected with the standard supporting frame around the side column in a pulling way,
the pre-buried ground anchor pulling-connecting frame is vertically arranged along each floor on the low-rise floor panel and the middle-rise floor panel, a group of pre-buried ground anchor pulling-connecting frames are transversely arranged along the upper side surface of each floor at intervals, the outer half part of the pre-buried ground anchor pulling-connecting frame is fixedly pulled and connected with the standard support frame at the position of each floor, and the inner half part of the pre-buried ground anchor pulling-connecting frame is fixedly connected with each floor panel.
The side column is the rectangle post, the side column frame includes two-way span side column and draws a set of well style of calligraphy horizontal bracket that connects the relative both sides portion of encorbelmenting support frame, well style of calligraphy horizontal bracket sets up along the direction of height interval of side column, and the outer wall of side column is banded to the inboard of well style of calligraphy horizontal bracket.
The groined type horizontal shelf includes vertical rod and drag link, vertical extension length of vertical rod at the side of the back side of side pillar is a span of the support frame of the portion of encorbelmenting at least, vertical rod is at side of the front side of side pillar and the parallel and level of the support frame of the portion of encorbelmenting, horizontal extension length of drag link in the both sides of side pillar is a span of the support frame of the portion of encorbelmenting at least.
The well-shaped horizontal frame is arranged at intervals of every two steps along the height direction of the side columns.
Pre-buried earth anchor draws link, pre-buried montant and pre-buried horizon bar including encorbelmenting, the bottom of pre-buried montant and pre-buried horizon bar together bury underground in the board of the structure outer limit portion of low floor and middle floor's board, pre-buried horizon bar is well style of calligraphy and encloses and merge fixed connection in the bottom of pre-buried montant, encorbelment and draw the structure outward flange that the pole level was encorbelmented low floor and middle floor's board, encorbelment and draw the pole to be located half interior and pre-buried montant fixed connection of floor upside, encorbelment and draw the pole to stretch out the standard support frame fixed connection of the portion of encorbelmenting and this position of each floor, encorbelment and draw the outer end of pole and the outer end parallel and level of standard support frame.
The bottom end of the embedded vertical rod is fixedly connected with the bottom layer steel bar of the floor panel, and the embedding depth is the thickness of the plate minus the diameter of the bottom layer steel bar of the floor panel plus the thickness of the steel bar protection layer.
The pre-buried montant is provided with twice along every vertical at least interval of the extension rod of encorbelmenting, the horizontal interval of the extension rod of encorbelmenting sets up the interval and is not more than 4m, the extension rod of encorbelmenting is located the interior half length of floor upside and is not less than 1.5 m.
The high-rise floor board is the roof boarding, the superelevation transfinites the die carrier and still is equipped with transfinites the roof beam die carrier including being located between the outside portion upside, the side column of roof boarding, transfinites the roof beam die carrier including transfinites outer support frame, outer bracing, interior bracing and the pre-buried montant of transfinites the roof beam, transfinites the outer support frame of roof beam and sets up in the transfinites roof beam outside, and it forms to use standard support frame as the outside to add a span, and transfinites outer support frame upwards to extend to the outside position of transfinites the roof beam, the outer end and the transfinites outer support frame fixed connection of outer bracing, the pre-buried montant's of transfinites the roof boarding in the dorsal roof boarding of transfinites, and the upside that the pre-buried montant of transfinites the roof beam is stretched out to the first half of transfinites the roof beam, the inner and the pre-buried montant fixed connection of superlimit roof beam of interior bracing.
The ultrahigh and ultralimit formwork further comprises a pull rod which is additionally connected with the standard support frame in a fixed mode, the pull rod comprises a horizontal long pull rod, a horizontal longitudinal long pull rod and a vertical long pull rod, the horizontal long pull rod is arranged below each layer of structural slab, the horizontal long pull rod spans the side columns and exceeds the frame columns adjacent to the side columns, the vertical long pull rod is arranged along one side or two sides of each frame column, the bottom end of the vertical long pull rod is fixedly connected with each floor slab, the top of the vertical long pull rod is fixedly connected with the horizontal long pull rod, the vertical long pull rod is longitudinally arranged at intervals in the range of the standard support frame, and the horizontal longitudinal long pull rod is longitudinally connected with the vertical long pull rod in the range of the standard support frame in a pulling mode.
A construction method of an embedded ground anchor pull-connection and embracing column combined ultrahigh and ultralimited formwork system comprises the following construction steps:
designing an arrangement scheme of an ultrahigh and ultralimit formwork according to the sizes of a high-rise cantilever plate, an ultralimit beam and a side column;
step two, constructing an underground structure;
step three, constructing the ground structure layer by layer: building a standard support frame, a pull rod and an out-of-limit beam outer support frame along with the layer, constructing a frame column of the layer, and arranging a side column frame connected with the standard support frame in a pulling way around the side column after removing the formwork;
step four, constructing the frame beam of the layer;
binding the floor plate steel bars on the floor;
step six, binding and fixing a pre-buried ground anchor connecting frame at the designed position on the reinforcing steel bars of the floor slab;
step seven, pouring floor slab concrete of the floor, and after the concrete reaches the design strength, connecting the pre-buried ground anchor pull-connection frame with the standard support frame in a pull manner;
step eight, repeating the step three and the step seven until the roof panel is constructed;
and step nine, pre-embedding vertical rods of the ultralimit beams on the roof panel, then pouring roof panel concrete, and after the concrete reaches the design strength, fixedly connecting the outer support frame of the ultralimit beams and the roof panel through the outer inclined struts and the inner inclined struts respectively.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
the invention solves the problems that based on the standard requirement, a large number of empty frames are erected due to the fact that an ultrahigh and ultralimited formwork system is too wide, the volume of a frame body is too large, and the stability of the ultrahigh and ultralimited formwork system is realized under the conditions that the erection space is limited and the budget is limited. The invention adopts the mode that the embedded ground anchors are arranged on the main body structural plate on the inner side of the support frame body of the support frame, the floor flat plate, the inclined plate of the step classroom and the folded plate to effectively connect and effectively connect with the frame column, and as the volume of the support frame body is reduced, the material cost and the labor cost are saved, and the problems that the empty support frame body is not erected on the outer side of the structure, the height-width ratio of the support frame body is satisfied and the integral stability of the support frame body is ensured are solved.
The invention also designs an effective pulling connection mode of the ultralimit beam formwork and the support frame body, and the ultralimit beam formwork and the support frame body are effectively connected with the embedded ground anchor pulling connection frame and the column embracing frame to be integrally combined to form a stable support system, so that the ultrahigh formwork and the floor formwork are synchronously erected and are sequentially upwards, and the construction safety of the support frame body is ensured.
The invention is suitable for newly built large-span, ultrahigh and super-large space structure projects.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an ultra-high ultralimit scaffold system according to an embodiment of the invention.
Fig. 2 is a schematic vertical section a-a in fig. 1.
Fig. 3 is a schematic view of fig. 1 with the support brackets removed and only the tie rods remaining.
Fig. 4 is a schematic diagram of the arrangement of the pre-buried ground anchor connecting frames of the layers above two layers of top plates only after the pull rods are removed from the dotted line frames in fig. 3.
Fig. 5 is a schematic view of fig. 2 with the support brackets removed and only the tie rods remaining.
Fig. 6 is a schematic diagram of the arrangement of the pre-buried ground anchor connecting frames of the layers above two layers of top plates only after the pull rods are removed from the dotted line frames in fig. 5.
Fig. 7 is a schematic view of the connection of each floor slab layer with the pre-buried ground anchor connecting frame.
Fig. 8 is a side view schematic of the structure of fig. 7.
Fig. 9 is a schematic top view of the pre-buried ground anchor connecting frame.
Fig. 10 is a schematic structural diagram of a building in a top view according to an embodiment of the invention.
Fig. 11 is a schematic top view of an ultra-high ultralimit formwork system according to an embodiment of the invention.
Fig. 12 is a schematic view of the side pillar frame of fig. 11 at B.
Fig. 13 is a schematic view of the front side structure of fig. 12.
Fig. 14 is an enlarged view of a portion of the roof panel of fig. 2.
Reference numerals: 1-underground structure, 2-frame column, 21-side column, 3-frame beam, 4-low floor panel, 5-high floor panel, 6-standard floor slab, 7-step inclined folded plate, 8-high cantilever plate, 9-standard support frame, 10-side column frame, 101-longitudinal pull rod, 102-transverse pull rod, 11-embedded ground anchor connecting frame, 111-cantilever pull connecting rod, 112-embedded vertical rod, 113-embedded horizontal rod, 12-cantilever support frame, 13-outer inclined support, 14-inner inclined support, 15-ultralimit beam embedded vertical rod, 16-horizontal long pull rod, 17-horizontal longitudinal long pull rod, 18-vertical long pull rod and 19-ultralimit beam outer support frame.
Detailed Description
The embodiment is shown in fig. 1-5 and fig. 10, the embodiment is a nine-storey building on a certain place, the periphery of the building is a busy road section, the road transportation is busy, no circulating road exists in the site, the site is narrow, the site plane arrangement difficulty is high, and therefore the material transportation during construction has a great influence on the normal construction of the project.
The size of the building with more than three layers is reduced compared with the first layer and the second layer, a plurality of folded plates are designed between two central frame columns, the top plate is partially cantilevered, therefore, the region of the cantilever part of the top plate is supported as a high formwork supporting region, the height of upward support from the top plate of the second layer is up to 31.20m, and meanwhile, the upper side of the cantilever plate is provided with an overrun beam, so that the design of the formwork at the position is a difficulty of the embodiment.
In the embodiment, the width of the cantilever plate is 2.4 meters, the length of the cantilever plate is 14.4 meters, the vertical rods of the top plate formwork are erected at intervals of 450mm in the transverse direction and 900mm in the longitudinal direction, and the step pitch of the horizontal rods is 1.2 meters; according to the standard requirement, the height-width-height ratio of the frame body is less than or equal to 1:3, the width of the frame body is required to be more than or equal to 10.4 meters, namely, an empty frame with the width of 8.0 meters is required to be erected on the outer side of the structure of the frame body to meet the standard requirement of 10.4-2.4=8.0 meters. And the space is narrow and cannot be provided with an empty frame body with the width of 8.0 meters.
In the embodiment, the embedded ground anchor connection and column holding combined ultrahigh and ultralimited formwork system is shown in fig. 1-6 and comprises an underground structure 1, an above-ground structure and a formwork system, wherein the formwork system comprises an ultrahigh and ultralimited formwork, the above-ground structure comprises frame columns 2 on two sides, frame beams 3 on each layer erected on the frame columns 2 and structure plates erected on longitudinal frame beams 3, the structure plates comprise a low-rise floor panel 4, a high-rise floor panel 5 and a middle-rise floor panel arranged between the low-rise floor panel and the high-rise floor panel, the middle-rise floor panel comprises a standard floor 6 and three layers of inclined folded plates 7, the height difference between the low-rise floor panel 4 and the high-rise floor panel 55 is not less than 30 m, the structural outer edge of the high-rise floor panel 5 does not exceed the structural outer edge of the low-rise floor panel 4 longitudinally, the structural outer edge of the high-rise floor panel 5 is vertically overhung relative to the structural outer edge of the middle-rise floor panel, the overhanging part is a high-layer overhanging plate 8, the frame column 2 comprises a side column 21 of an overground structure, and the high-layer overhanging plate 8 is erected in the setting range of the side column 21.
The ultrahigh and ultralimit formwork is erected from the upper side of a low-rise floor panel 4 to the top in a full space and props up at the lower sides of a high-rise floor panel 5 and a high-rise cantilever plate 8, the ultrahigh and ultralimit formwork comprises a standard support frame 9, a side column frame 10 and a pre-buried ground anchor pull connecting frame 11, and the standard support frame 9 is encrypted in the lower side range of the high-rise cantilever plate and two surrounding span ranges to form a cantilever support frame 12. The side column frame 10 is enclosed around the side column 21 and fixedly connected with the standard support frames 9 around the side column 21 in a pulling mode, the embedded ground anchor pulling frame 11 is vertically arranged along each floor on the low-rise floor 4 and the middle-rise floor, a group of embedded ground anchor pulling frames 11 is transversely arranged along the upper side surface of each floor at intervals, the outer half part of each embedded ground anchor pulling frame 11 is fixedly connected with the standard support frames 9 at the positions of the floors in a pulling mode, and the inner half part of each embedded ground anchor pulling frame 11 is fixedly connected with each floor.
The standard support frame 9 of the embodiment is a steel pipe fastener type mold frame, the arrangement intervals of vertical rods are set up at intervals of 600mm in the transverse direction and 900mm in the longitudinal direction, the vertical rods in the support frame of the overhanging part are set up at intervals of 450mm in the transverse direction and 900mm in the longitudinal direction, and the step pitch of horizontal rods is 1.2 m; the distribution positions of the vertical rod axes from the two layers of top plates to the top plates are uniform, and the vertical rods are vertically arranged to ensure the stress of the vertical rod axes.
As shown in fig. 10-13, the side columns 21 are rectangular columns, the side column frame 10 includes a group of horizontal frames shaped like a Chinese character jing which bidirectionally spans the side columns 21 and is connected with the support frames 12 of the overhanging portions on the opposite sides in a pulling manner, the horizontal frames shaped like a Chinese character jing are arranged at intervals along the height direction of the side columns 21, and the outer walls of the side columns 21 are hooped by the inner sides of the horizontal frames shaped like a Chinese character jing.
The # -shaped horizontal frame comprises a longitudinal pull rod 101 and a transverse pull rod 102, the longitudinal extension length of the longitudinal pull rod 101 at the back side of the side column is at least one span of the cantilever part support frame 12, the longitudinal pull rod 101 is parallel and level with the cantilever part support frame 12 at the front side of the side column, and the transverse extension length of the transverse pull rod 102 at the two sides of the side column is at least one span of the cantilever part support frame 12. The well-shaped horizontal frames are arranged one by one at intervals along every two steps in the height direction of the side column 21.
Referring to fig. 4 and 6-9, the embedded ground anchor connecting frame 11 includes an overhanging connecting rod 111, an embedded vertical rod 112 and an embedded horizontal rod 113, the bottom of the embedded vertical rod 112 and the embedded horizontal rod 113 are embedded in the plate body of the structural outer edge portion of the low-rise floor panel 4 and the middle-rise floor panel together, the embedded horizontal rod 113 is enclosed in a shape like a Chinese character jing and is fixedly connected to the bottom of the embedded vertical rod 112, the overhanging connecting rod 111 horizontally overhangs the structural outer edge of the low-rise floor panel 4 and the structural outer edge of the middle-rise floor panel, the inner half portion of the overhanging connecting rod 111 located on the upper side of the floor panel is fixedly connected to the embedded vertical rod 112, the overhanging portion of the overhanging connecting rod 111 extending out of each floor panel is fixedly connected to the standard support frame 9 at the position, and the outer end of the overhanging connecting rod 111 is flush with the outer end of the standard support frame 9.
The bottom end of the embedded vertical rod 112 is fixedly connected with the bottom layer steel bar of the floor panel, and the embedding depth is the thickness of the plate minus the diameter of the bottom layer steel bar of the floor panel plus the thickness of the steel bar protection layer. The pre-buried montant 112 is provided with twice along every way vertical at least interval of the drag link rod 111 of encorbelmenting, the horizontal interval of the drag link rod 111 of encorbelmenting sets up the interval and is not more than 4m, the drag link rod 111 of encorbelmenting is located the interior half length of floor upside and is not less than 1.5 m. In this embodiment, the embedded vertical rod 112 is a steel pipe with a diameter of 48mm, and is connected with the standard support frame through a fastener. The embedded vertical rods 112 are perpendicular to the upper side surface of each structural plate, especially at the position of the step inclined folding plate, and are arranged on the horizontal stepping surface of the step.
Referring to fig. 2 and 14, in other embodiments, the high-rise floor slab 5 is a roof slab, the ultra-high and ultra-high limit formwork also comprises an ultra-limit beam formwork which is arranged between the upper side of the outer edge part of the roof panel and the side column 21, the over-limit beam formwork comprises an over-limit beam outer supporting frame 19, an outer inclined support 13, an inner inclined support 14 and an over-limit beam embedded vertical rod 15, the outer support frame 12 of the over-limit beam is arranged outside the over-limit beam and is formed by additionally arranging a span outwards based on the standard support frame 9, the outer support frame 12 of the over-limit beam extends upwards to the outer side position of the over-limit beam, the outer end of the outer inclined support 13 is fixedly connected with the outer support frame 12 of the ultralimit beam, the lower half part of the ultralimit beam embedded vertical rod 15 is embedded in a roof panel on the back side of the ultralimit beam, the upper half part of the ultralimit beam embedded vertical rod 15 extends out of the upper side of the roof panel, and the inner end of the inner inclined support 14 is fixedly connected with the ultralimit beam embedded vertical rod 15.
Referring to fig. 3, 5 and 14, the ultra-high and ultra-high limit formwork further comprises pull rods fixedly connected and additionally arranged with the standard support frame 9, wherein each pull rod comprises a horizontal long pull rod 16, a horizontal long pull rod 17 and a vertical long pull rod 18, the horizontal long pull rods 16 are arranged below the positions of the structural plates of each layer, the horizontal long pull rods span the side columns 21 and exceed the frame columns 2 adjacent to the side columns 21, the vertical long pull rods 18 are arranged at intervals along one side or two sides of each frame column 2, the bottom ends of the vertical long pull rods 18 are fixedly connected with each floor panel, the top parts of the vertical long pull rods 18 are fixedly connected with the horizontal long pull rods 16, the vertical long pull rods 18 are longitudinally arranged in the range of the standard support frame 9 at full intervals, and the horizontal long pull rods 17 are longitudinally connected with the vertical long pull rods 18 in the range of the standard support frame 9.
The construction method of the embedded ground anchor pull-connection and embracing column combined ultrahigh and ultralimited formwork system comprises the following construction steps:
designing an arrangement scheme of an ultrahigh and ultralimit formwork according to the sizes of a high-rise cantilever plate, an ultralimit beam and a side column 21; and selecting a proper mould frame system for the ultrahigh and ultralimit mould frame, and determining various parameters of the mould frame by calculating the pkpm according to the scheme design.
And step two, constructing the underground structure 1.
Step three, constructing the ground structure layer by layer: a standard support frame 9, a pull rod and an out-of-limit beam outer support frame 12 are erected along with the layer, a frame column 2 of the layer is constructed firstly, and side column supports 10 which are connected with the standard support frame 9 in a pulling mode are arranged on the periphery of a side column 21 after a formwork is removed.
The erection process of the step comprises the following steps of erecting a mould frame upright base: the base is laid the support body and is located on concrete bottom plate or floor, and the pole setting underlay size is 50mm 100 mm's plank, and the fastener steel pipe supports the pole of sweeping the floor apart from ground to be not more than 200mm, and the wheel is buckled the support frame and is swept the pole apart from ground 350mm, and the lumber skid is unified to be the syntropy setting with main rib.
Building a cross brace: when a full red support system is adopted, vertical cross braces are arranged at the four sides and the middle of the full red support system every 5m, and are continuously arranged from bottom to top; when the height of the frame body is less than 5m, a horizontal cross brace is erected at the bottom of the beam, and when the height reaches 8m, horizontal cross braces are erected at the middle height position of the frame body and the lower position of the top beam; when the length is more than 8m, the frame body extends upwards by 3-4 steps and is additionally provided with a horizontal cross brace.
Drawing and connecting and fixing a die carrier: in order to ensure the stability of the frame body, the frame column is constructed and poured in advance, the high formwork support body is connected with the side column after the formwork is removed, and the stability of the frame body is ensured by connecting the high formwork support body and the side column at intervals of every two steps. When finishing the steel bar binding in the floor panel, the pre-buried ground anchor is arranged, and after the concrete of the plate body reaches a certain strength, the support body is firmly connected with the ground anchor in time. The frame body of the high formwork supporting area is connected with the standard frame body to exceed two spans, and meanwhile, the cross bars at the end parts are supported by adopting U supports and 100mm multiplied by 100m battens so as to pour structural members of walls, columns and beams. The two span frame bodies in the non-high formwork supporting areas on the two sides of the high formwork are arranged at the same height formwork at the longitudinal and transverse intervals, so that the high formwork supporting frame body and the integral formwork frame are connected into a whole, and the stability is improved.
The top U holds in the palm and the template props up and establishes: the adjustable jacking head is arranged at the top of the upright stanchion of the formwork support, the outer diameter of the screw rod is not less than 36mm, the extension length is not more than 300mm, and the length inserted into the upright stanchion is not less than 150 mm. The free height of the upright rods above the first row of cross rods at the top of the wheel buckle type and fastener type support cannot exceed 500mm, if the free end is too high to exceed the limit value due to the fact that the rods are matched on site, a steel pipe is arranged at the top in a pulling mode, and the free end is guaranteed not to exceed 500 mm. The flat plate template adopts a 15mm thick double-faced film-coated multilayer plate, the secondary keel adopts 40mm multiplied by 2.5mm square steel, and the main keel adopts 50mm multiplied by 70mm multiplied by 3mm square steel; the inclined plane plate template adopts a 15mm thick double-sided film-coated multilayer board, the secondary keel adopts 40mm multiplied by 80mm square wood, and the main keel adopts 80mm multiplied by 80mm square wood; the support adopts full hall formula steel pipe fastener support frame.
And step four, constructing the frame beam of the floor.
And fifthly, binding the floor slab reinforcing steel bars on the floor.
Step six, binding and fixing the pre-buried ground anchor connecting frame 11 at the designed position on the steel bar of the floor slab.
And seventhly, pouring floor slab concrete of the floor, and after the concrete reaches the design strength, connecting the pre-buried ground anchor connecting frame 11 with the standard support frame 9 in a pulling mode.
And step eight, repeating the step three and the step seven until the roof panel is constructed.
And step nine, pre-burying vertical rods 15 of the ultralimit beam on the roof panel, then pouring roof panel concrete, and after the concrete reaches the design strength, fixedly connecting the outer support frame 12 of the ultralimit beam and the roof panel through outer inclined supports 13 and inner inclined supports 14 respectively.
The construction key points of the invention are as follows: the upper layer and the lower layer of the over-limit part are provided with vertical pole alignment points, and the lower layer still can be supported by the retainer body when the requirement of removing the mold is met. If the frame bodies on two sides of the high-low span part are not on the same plane when meeting the horizontal rods, the frame bodies are connected by using steel pipes, and at least two vertical rods are connected on two sides. The adjustable jacking head is arranged at the top of the upright stanchion of the formwork support, the outer diameter of the screw rod is not less than 36mm, the extension length is not more than 300mm, and the length inserted into the upright stanchion is not less than 150 mm. The free height of the upright rods above the first row of cross rods at the top of the wheel buckle type and fastener type support cannot exceed 500mm, if the free end is too high to exceed the limit value due to the fact that the rods are matched on site, a steel pipe is arranged at the top in a pulling mode, and the free end is guaranteed not to exceed 500 mm. The transverse distance of the vertical rods of the beam is symmetrically arranged towards two sides by taking the central line of the bottom of the beam as the center, and the distance between the outermost vertical rod and the side edge of the beam is not more than 300 mm.
Claims (10)
1. The utility model provides a pre-buried earth anchor draws to connect and embrace post combination superelevation transfinite die carrier system which characterized in that: the floor structure comprises an underground structure (1), an above-ground structure and a formwork system, wherein the formwork system comprises an ultrahigh and ultralimit formwork, the above-ground structure comprises frame columns (2) on two sides, frame beams (3) on each layer erected on the frame columns (2) and structure plates on each layer erected on longitudinal frame beams (3), the structure plates comprise low-rise floor panels (4), high-rise floor panels (5) and middle-rise floor panels arranged between the low-rise floor panels and the high-rise floor panels, the middle-rise floor panels comprise standard floor slabs (6) and n layers of ladder inclined folded plates (7), the height difference between the low-rise floor panels (4) and the high-rise floor panels (5) and (5) is not less than 30 m, n is not less than 1, the structural outer edge of the high-rise floor panel (5) does not exceed the structural outer edge of the low-rise floor panels (4) longitudinally, and the structural outer edge of the high-rise floor panels (5) is overhung relative to the structural outer edge of the middle-rise floor panels longitudinally, the overhanging part is a high-rise overhanging plate (8), the frame column (2) comprises a side column (21) of an overground structure, the high-rise overhanging plate (8) is erected in the arrangement range of the side column (21),
the ultrahigh and ultralimit formwork is erected from the upper side of a low-rise floor panel (4) to the upper side in full and props up the lower sides of a high-rise floor panel (5) and a high-rise cantilever plate (8), the ultrahigh and ultralimit formwork comprises a standard support frame (9), a side column frame (10) and a pre-buried ground anchor pull-connection frame (11), the standard support frame (9) is encrypted in the lower side range of the high-rise cantilever plate and two surrounding span ranges to form a cantilever support frame (12),
the side column frame (10) is enclosed around the side column (21) and is fixedly connected with the standard supporting frame (9) around the side column (21) in a pulling way,
the embedded ground anchor pulling-connecting frame is characterized in that the embedded ground anchor pulling-connecting frame (11) is vertically arranged along each floor of a low-rise floor panel (4) and a middle-rise floor panel, a group of embedded ground anchor pulling-connecting frames (11) are transversely arranged along the upper side surface of each floor at intervals, the outer half part of each embedded ground anchor pulling-connecting frame (11) is fixedly pulled and connected with a standard support frame (9) of each floor, and the inner half part of each embedded ground anchor pulling-connecting frame (11) is fixedly connected with each floor.
2. The combined ultrahigh and ultralimited formwork system of embedded ground anchor and embracing column of claim 1, characterized in that: the utility model discloses a side post, including the part support frame that encorbelments portion support frame (12) and the well style of calligraphy horizontal bracket of portion, the side post (21) are the rectangle post, side post frame (10) are including two-way span side post (21) and draw and connect the relative both sides, well style of calligraphy horizontal bracket sets up along the direction of height interval of side post (21), and the outer wall of side post (21) is banded to the inboard of well style of calligraphy horizontal bracket.
3. The embedded ground anchor pulling and holding column combined ultrahigh and ultralimited formwork system as claimed in claim 2, wherein: well style of calligraphy horizontal shelf is including indulging pull rod (101) and drag link (102), indulge pull rod (101) and be a span of the portion support frame (12) of encorbelmenting at least at the dorsal longitudinal extension length of side pillar, indulge pull rod (101) and the portion support frame (12) parallel and level of encorbelmenting at side pillar front side, drag link (102) are a span of the portion support frame (12) of encorbelmenting at least at the lateral extension length of side pillar both sides.
4. The embedded ground anchor pulling and holding column combined ultrahigh and ultralimited formwork system as claimed in claim 3, wherein: the well-shaped horizontal frames are arranged at intervals of every two steps along the height direction of the side columns (21).
5. The embedded ground anchor pulling-in and embracing column combined ultrahigh and ultra-limited formwork system as claimed in any one of claims 1 to 4, wherein: pre-buried earth anchor draws link (11) is including encorbelmenting draw and connect pole (111), pre-buried montant (112) and pre-buried horizon bar (113), the bottom of pre-buried montant (112) and pre-buried horizon bar (113) are together buried underground in the plate body of the structure outer limit portion of low floor panel (4) and middle floor panel, pre-buried horizon bar (113) are well style of calligraphy and enclose and fixedly connected in the bottom of pre-buried montant (112), encorbelment draw and connect pole (111) level and hang out the structure outward flange of low floor panel (4) and middle floor panel, encorbelment draw and connect pole (111) to be located half the interior and pre-buried montant (112) fixed connection of floor upside, encorbelment draw and connect the pole (111) and stretch out the standard support frame (9) fixed connection of each floor panel with this position, the outer end that encorbelments and connect pole (111) and the outer end parallel and level of standard support frame (9).
6. The combined ultrahigh and ultralimited formwork system of embedded ground anchor and embracing column of claim 5, characterized in that: the bottom end of the embedded vertical rod (112) is fixedly connected with the bottom layer steel bar of the floor panel, and the embedding depth is the thickness of the plate minus the diameter of the bottom layer steel bar of the floor panel plus the thickness of the steel bar protection layer.
7. The embedded ground anchor pulling and holding column combined ultrahigh and ultralimited formwork system of claim 5, characterized in that: the pre-buried montant (112) are provided with twice along every vertical at least interval of the pole (111) of drawing of encorbelmenting, the horizontal interval that the pole (111) of drawing of encorbelmenting set up the interval and is not more than 4m, the interior half length that the pole (111) of drawing of encorbelmenting is located the floor upside is not less than 1.5 m.
8. The embedded ground anchor pulling and holding column combined ultrahigh and ultra-limited formwork system as claimed in claim 6 or 7, wherein: the high-rise floor slab (5) is a roof slab, the ultrahigh and ultralimit formwork further comprises an ultralimit beam formwork arranged between the side columns (21) and the upper side of the outer edge part of the roof slab, the overrun beam formwork comprises an overrun beam outer supporting frame (19), an outer inclined support (13), an inner inclined support (14) and an overrun beam embedded vertical rod (15), the outer support frame (12) of the over-limit beam is arranged outside the over-limit beam and is formed by adding a span outwards based on the standard support frame (9), the outer support frame (12) of the over-limit beam extends upwards to the outer side position of the over-limit beam, the outer end of the outer inclined strut (13) is fixedly connected with an outer support frame (12) of the overrun beam, the lower half part of the over-limit beam embedded vertical rod (15) is embedded in the roof panel at the back side of the over-limit beam, the upper half part of the over-limit beam embedded vertical rod (15) extends out of the upper side of the roof panel, the inner end of the inner inclined strut (14) is fixedly connected with the overrun beam embedded vertical rod (15).
9. The ultra-high and ultra-limited formwork system combined by the pre-buried ground anchor and the holding column as claimed in claim 8, characterized in that: the ultrahigh and ultra-limited mould frame also comprises a pull rod which is fixedly connected and additionally arranged with the standard support frame (9), the pull rods comprise horizontal and transverse long pull rods (16), horizontal and longitudinal long pull rods (17) and vertical long pull rods (18), the horizontal transverse long pull rod (16) is arranged along the lower part of each layer of structural slab, the transverse arrangement length spans the side column (21) and exceeds the frame column (2) adjacent to the side column (21), the vertical long pull rods (18) are arranged along one side or two sides of each frame column (2), the bottom ends of the vertical long pull rods (18) are fixedly connected with each floor slab, the top parts of the vertical long pull rods (18) are fixedly connected with the horizontal and transverse long pull rods (16), the vertical long pull rods (18) are longitudinally arranged in the range of the standard support frame (9) at intervals all around, the horizontal long pull rod (17) is longitudinally connected with the vertical long pull rod (18) in the range of the standard support frame (9).
10. The construction method of the embedded ground anchor pulling-connecting and embracing column combined ultrahigh and ultralimited formwork system according to claim 9 is characterized by comprising the following construction steps:
designing an arrangement scheme of an ultrahigh and ultralimit formwork according to the sizes of a high-rise cantilever plate, an ultralimit beam and a side column (21);
step two, constructing an underground structure (1);
step three, constructing the ground structure layer by layer: building a standard support frame (9), a pull rod and an out-of-limit beam support frame (12) along with a layer, constructing a frame column (2) of the layer, and arranging a side column frame (10) in tension connection with the standard support frame (9) at the periphery of a side column (21) after removing a formwork;
step four, constructing the frame beam of the layer;
binding the floor plate steel bars on the floor;
step six, binding and fixing a pre-buried ground anchor connecting frame (11) at the designed position on the steel bar of the floor slab;
step seven, pouring floor slab concrete of the floor, and after the concrete reaches the design strength, connecting the pre-buried ground anchor connecting frame (11) with the standard support frame (9) in a pulling manner;
step eight, repeating the step three and the step seven until the roof panel is constructed;
and step nine, pre-burying vertical rods (15) of the ultralimit beams on the roof panel, then pouring roof panel concrete, and after the concrete reaches the design strength, fixedly connecting the outer support frame (12) of the ultralimit beams and the roof panel through outer inclined supports (13) and inner inclined supports (14) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111658504.9A CN114427295B (en) | 2021-12-31 | 2021-12-31 | Pre-buried ground anchor pulling connection and holding column combined ultrahigh and ultralimit formwork system and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111658504.9A CN114427295B (en) | 2021-12-31 | 2021-12-31 | Pre-buried ground anchor pulling connection and holding column combined ultrahigh and ultralimit formwork system and construction method thereof |
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| CN114427295A true CN114427295A (en) | 2022-05-03 |
| CN114427295B CN114427295B (en) | 2022-08-16 |
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| CN202111658504.9A Expired - Fee Related CN114427295B (en) | 2021-12-31 | 2021-12-31 | Pre-buried ground anchor pulling connection and holding column combined ultrahigh and ultralimit formwork system and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115897977A (en) * | 2022-12-19 | 2023-04-04 | 中国建筑第二工程局有限公司 | Triple unloading system of non-return self-adhesion atrium decoration scaffold and construction method thereof |
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| CN114427295B (en) | 2022-08-16 |
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