CN202706497U - Postpositional double U-steel cantilever falsework - Google Patents
Postpositional double U-steel cantilever falsework Download PDFInfo
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- CN202706497U CN202706497U CN 201220386432 CN201220386432U CN202706497U CN 202706497 U CN202706497 U CN 202706497U CN 201220386432 CN201220386432 CN 201220386432 CN 201220386432 U CN201220386432 U CN 201220386432U CN 202706497 U CN202706497 U CN 202706497U
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Abstract
The utility model discloses a postpositional double U-steel cantilever falsework. Aims of saving working hours and improving burden withstanding are achieved. According to the postpositional double U-steel cantilever falsework, U-steels are arranged on a lower cantilever layer. The front end of each of U-steels extends to the outside of the lower cantilever layer and the two sides of a main poling. More than three anchoring parts are arranged on the U-steels. The bottom end of each anchoring parts is arranged in the lower cantilever layer. Reinforcing rib assemblies are welded on the position, corresponding to the main poling, of the U-steels. The bottom of a steel tube is butt against an upper end face of each of the U-steels. The two steel tubes are respectively connected with the main poling in a stagger connection mode through fasteners. A hand ring is arranged between the U-steels. The hand ring is connected with each of the U-steels through a steel wire rope. Compared with the prior art, the U-steels are fastened on the cantilever layer in a anchor mode through the anchoring parts, the main poling is arranged between the U-steels, and a short steel tube fastener is arranged in two sides of the main poling through the connection of the fasteners. Therefore the upward thrust of the wind load for the high-rise falseworke in overhanging position is avoided, and safety and firmness of the whole frame body are guaranteed.
Description
Technical field
The utility model relates to a kind of building operations instrument, particularly a kind of rearmounted double flute steel builder's jack for the high-altitude.
Background technology
At present, existing scaffold general expression is set up when overhang layer must up set up two-layer more, be used for security protection, after waiting for that but the overhang layer concrete reaches the some strength bearing load, two-layer dismounting to setting up again more, and again set up scaffold one from overhang layer, setting up with dismounting of scaffold is work high above the ground, and be not only dangerous but also time-consuming.This way overhang layer place disconnects fully simultaneously, load is going down not, but upward the pulling force between the lower frame also disconnects, and is unfavorable for like this resisting wind load high-rise scaffold is located upwards thrust in encorbelmenting, surpass 40m and have wind eddies stream to do the time spent when frame is high, upflow can produce upwards thrust to shelf.
Summary of the invention
The purpose of this utility model provides a kind of rearmounted double flute steel builder's jack, and the technical problem that solve is to save man-hour, improves the wind lotus ability of resisting of scaffold.
For addressing the above problem, the utility model is by the following technical solutions: a kind of rearmounted double flute steel builder's jack, comprise that two row complex roots are arranged on the main vertical rod in the building lower floor overhang layer outside, described lower floor overhang layer is provided with channel-section steel, the front end of channel-section steel extends to outside lower floor's overhang layer, the both sides of main vertical rod, be provided with three above anchoring pieces at channel-section steel, the lower end of anchoring piece is arranged in lower floor's overhang layer, on the channel-section steel, be welded with the reinforcing rib group on the opposite position of main vertical rod, the top of reinforcing rib group, the upper surface of channel-section steel is provided with steel pipe, the bottom of steel pipe is against on the upper surface of channel-section steel, between main vertical rod and two steel pipes respectively by the staggered snapping of fastener, be provided with timber wedge between channel-section steel and anchoring piece and in the gap between the channel-section steel, the upper end of lower floor's overhang layer is provided with the upper strata overhang layer, and the upper strata overhang layer is provided with suspension ring, suspension ring are connected by wire rope with channel-section steel, the lower end of wire rope is enclosed within on the channel-section steel, and suspension ring are passed in the upper end of wire rope, and the two ends of wire rope connects by flower basket bolt.
The stiffener that reinforcing rib group described in the utility model is connected on by three root beads between the groove part of channel-section steel forms.
Be welded with spacer bars on the upper surface of stiffener described in the utility model top, channel-section steel, spacer bars and main vertical rod are arranged on the same straight line, and the bottom of steel pipe is enclosed within on the spacer bars.
The opening direction of channel-section steel described in the utility model arranges on the contrary.
Anchoring piece described in the utility model is comprised of bolt and the cover plate of U font, bolt is arranged in lower floor's overhang layer, the two ends pin on bolt top stretches out in outside the upper surface of lower floor's overhang layer, two channel-section steels are arranged between the pin of two ends, top, bolt bottom is provided with the structure reinforcing rib, the structure reinforcing rib is arranged in lower floor's overhang layer, and cover plate is fastened on the two ends pin of bolt by nut, and cover plate is pressed on the channel-section steel.
Anchoring piece described in the utility model is comprised of bolt, cover plate and reinforcement steel plate, described bolt inserts in lower floor's overhang layer from the lower surface of lower floor's overhang layer, the two ends pin on bolt top stretches out in the upper surface of lower floor's overhang layer, two channel-section steels are arranged between the pin of two ends, between the lower surface of bolt bottom and lower floor's overhang layer, be provided with the reinforcement steel plate, cover plate is fastened on the two ends pin of bolt by nut, is pressed on the channel-section steel.
Anchoring piece described in the utility model is separately positioned on the front end of lower floor's overhang layer and is arranged on the forward and backward both sides, rear end of lower floor's overhang layer.
Spacing between the stiffener described in the utility model is 100mm.
Upper strata described in the utility model overhang layer is provided with the reinforcing steel pipe, reinforces between steel pipe and the main vertical rod and is provided with cross bar, is connected by fastener between cross bar and reinforcing steel pipe, the main vertical rod.
The utility model compared with prior art, employing arranges anchoring piece at overhang layer, channel-section steel is passed through the anchoring piece anchor tightly at overhang layer, main vertical rod is set between channel-section steel, main vertical rod both sides are provided with the short steel pipes that connects by fastener and reinforce, by wire cable strengthening, can save setting up, removing of two-layer support body between channel-section steel and the upper strata overhang layer; Not only saved cost but also so that constructing operation is safer, particularly when overhang layer is constructed, need not delay, be conducive to speed up the work; Effectively resisted wind load high-rise scaffold is located upwards thrust in encorbelmenting, the general safety that more is conducive to support body is firm.
Description of drawings
Fig. 1 is perspective view of the present utility model.
Fig. 2 is internal construction schematic diagram of the present utility model
Fig. 3 is overall structure schematic diagram of the present utility model.
Fig. 4 is the first structural representation of anchoring piece of the present utility model.
Fig. 5 is the second structural representation of anchoring piece of the present utility model.
Fig. 6 is the syndeton schematic diagram of reinforcing rib group of the present utility model and spacer bars and channel-section steel.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Such as Fig. 1, Fig. 2 and shown in Figure 3, rearmounted double flute steel builder's jack of the present utility model adopts the scaffold of prior art, scaffold in prior art is provided with two row complex root master vertical rods 4, Q235A48.3 * 3.6 seamless steel pipes are adopted in main vertical rod 4, pre-buried on the upper surface of lower floor's overhang layer 1 or after bury anchoring piece 2 more than 3, in the present embodiment, anchoring piece 2 is 3, the setting position of 3 anchoring pieces 2 is a front end that is arranged on lower floor's overhang layer 1, two both sides, front and back, rear end that are separately positioned on lower floor's overhang layer 1, the anchoring piece of front end to the distance between the anchoring piece of rear end rear side is not less than 1.25 times of the distance of channel-section steel between extending to outside the overhang layer from the anchoring piece that is arranged on front end, in three anchoring pieces 2, be interspersed with the channel-section steel 3 that extends to lower floor's overhang layer 1 outside, this channel-section steel 3 is C shape Q235 type, No. 16 channel-section steels, channel-section steel 3 is provided with two, the opening direction of two channel-section steels 3 is opposite, and main vertical rod 4 is arranged between two channel-section steels 3 that extend to lower floor's overhang layer 1 outside;
On channel-section steel 3, the opposite position of main vertical rod 4 is welded with one group of reinforcing rib group 7, the stiffener 11 that reinforcing rib group 7 is connected on by three root beads between the groove part 13 of channel-section steel 3 forms, spacing between the stiffener 11 is 100mm, middle stiffener 11 is arranged on the same straight line with main vertical rod 4, above the stiffener 11 of centre, the upper surface of channel-section steel 3 is welded with spacer bars 12, the upper surface of the both sides of main vertical rod 4, channel-section steel 3 is provided with steel pipe 6, and the bottom of steel pipe 6 is enclosed within outside the spacer bars 12;
Pass through respectively fastener 5 staggered snappings between main vertical rod 4 and two steel pipes 6, fastener 5 adopts the scaffold of prior art to clasp, the gap is by timber wedge 14 wedgings around channel-section steel 3, be provided with upper strata overhang layer 9 in lower floor's overhang layer 1 upper end, be embedded with suspension ring 10 on the upper strata overhang layer 9, suspension ring 10 are U-shaped, be connected by wire rope 8 between suspension ring 10 and the channel-section steel 3, the lower end of wire rope 8 is enclosed within the front end of channel-section steel 3, suspension ring 10 are passed in the upper end of wire rope 8, and the two ends of wire rope 8 connects by flower basket bolt.
As shown in Figure 4, anchoring piece 2 of the present utility model is comprised of bolt 18 and the cover plate 19 of U font, bolt 18 is embedded in lower floor's overhang layer 1, the two ends pin on the top of bolt 18 stretches out in outside the upper surface of lower floor's overhang layer 1, two channel-section steels 2 are arranged between the pin of two ends, the top, bottom of bolt 18 is provided with structure reinforcing rib 17, structure reinforcing rib 17 is embedded in lower floor's overhang layer 1, cover plate 19 is fastened on the two ends pin of bolt 18 by nut, two channel-section steels 2 are compressed, cover plate 19 adopts the angle steel of L100mm * 10mm specification, bolt 18 adopts M20 type bolt, structure reinforcing rib 17 adopts two Ф 18 types, the reinforcing bar of long 1500mm, and timber wedge 14 wedges are between the groove part of channel-section steel 2 and two channel-section steels 2.
As shown in Figure 5, another kind of anchoring piece 2 of the present utility model is excessive or leak when burying and use in pre-buried anchoring piece position deviation, the bolt 18 of this anchoring piece inserts in lower floor's overhang layer 1 from the lower surface of lower floor's overhang layer 1, the two ends pin on the top of bolt 18 stretches out from the upper surface of lower floor's overhang layer 1, two channel-section steels 2 are arranged between the pin of two ends, between the lower surface of the bottom of bolt 18 and overhang layer 1, be provided with and strengthen steel plate 20, cover plate 19 is fastened on the two ends pin of bolt 18 by nut, two channel-section steels 2 are compressed, bolt 18 adopts M20 type bolt, strengthen the steel plate that steel plate 20 adopts 100mm * 100mm * 10mm, timber wedge 14 wedges are between the groove part of channel-section steel 2 and two channel-section steels 2.
As shown in Figure 6, the two ends of three stiffeners 11 of reinforcing rib group 7 respectively with the both ends of the surface welding of the groove part 13 of channel-section steel, a middle stiffener 11 is arranged on the same straight line with main vertical rod 4, above a stiffener 11 of centre, the upper surface of channel-section steel 3 is welded with spacer bars 12, socket steel pipe 6 on the spacer bars 12.
In order to increase safety, as shown in Figure 2, on upper strata overhang layer 9, can also be embedded with and reinforce steel pipe 21, reinforce between steel pipe 21 and the main vertical rod 4 and be provided with cross bar 22, be connected by fastener 5 between cross bar 22 and reinforcing steel pipe 21, the main vertical rod 4.
The job practices of rearmounted double flute steel builder's jack of the present utility model may further comprise the steps:
One, pre-buried anchoring piece in lower floor's overhang layer, concreting is during to lower floor's overhang layer, pre-buried anchoring piece more than 3, the anchoring piece setting position is that lower floor's overhang layer front end arranges 1, side arranges respectively 1 before and after the lower floor overhang layer rear end, the anchoring piece of front end to the distance between the last anchoring piece in rear end is not less than 1.25 times of the distance of channel-section steel between the anchoring piece of front end extends to outside the overhang layer, the size that distance and anchoring piece are set of anchoring piece is by standard GB/T 50017-(2003) in " Code for design of steel structures " to position and the dimensional requirement setting of anchoring piece, the model of pre-buried position and anchoring piece is by standard GB/T 50017-(2003) predetermined processing in " Code for design of steel structures ".
The length of anchoring piece is by standard GB/T 50010-(2010) the regulation setting of Bar Anchorage in " Code for design of concrete structures ", when the position of anchoring piece was arranged on the floor, the thickness of floor was not less than 120mm.
Two, the suspension ring of pre-buried U-shaped in the overhang layer of upper strata, No. 20 round steel of Ф, when the upper strata overhang layer is arrived in concreting, suspension ring are embedded in the overhang layer of upper strata, knot suspension centre as channel-section steel outer end and building structure oblique pull, suspension ring adopt the HPB235 grade reinforcing steel, and diameter is not less than 20mm, and the pre-buried anchorage length of suspension ring is by standard GB/T 50010-(2010) the regulation setting of Bar Anchorage in " Code for design of concrete structures ".
Three, channel-section steel processing, according to standard GB/T 50010-(2010) " Code for design of concrete structures " and scaffold use and load situation is determined channel-section steel specification and length and carried out finished product and process, the length of a cutting channel-section steel and at the groove part of the front end of channel-section steel, one group of reinforcing rib group is welded in the position of main vertical rod, every group of reinforcing rib group is three stiffeners, stiffener uses Ф 22@100 type reinforcing ribs, length is determined according to the model of channel-section steel, the two ends of stiffener and groove part welding, distance is 100mm between between the stiffener, a middle stiffener and main vertical rod are arranged on the same straight line, above a middle stiffener, channel-section steel welds spacer bars on the upper surface, spacer bars uses No. 22 reinforcing bars of Ф, the lower end of spacer bars and the welding of channel-section steel upper surface.
Four, channel-section steel is installed, intensity when concrete reaches and uses 80% after, two channel-section steel openings are clipped on the contrary the both sides of main vertical rod of the scaffold of prior art, and pass 3 pre-buried anchoring pieces, in the groove part of channel-section steel and the gap timber wedge wedging between two channel-section steels, timber wedge is cube structure, main vertical rod material is by " building operations fastener type steel pipe scaffold technical specification of security " JGJ130-(2011) in to the technical requirements setting of main vertical rod material, adopt Q235A48.3 * 3.6 seamless steel pipes.
Five, steel pipe is installed, steel pipe is installed in channel-section steel upper surface, the both sides of main vertical rod, steel pipe socket is outside spacer bars, and interlaced respectively with the steel pipe fastening of main vertical rod and both sides by fastener, tube material is by " building operations fastener type steel pipe scaffold technical specification of security " JGJ130-(2011) in to the technical requirements setting of tube material, the steel pipe effective length is not less than 1m, and effective length refers to begin to calculate from steel pipe and channel-section steel contact position the distance between the end of pushing up a fastener most.
The fastener material quality is by " building operations fastener type steel pipe scaffold technical specification of security " JGJ130-(2011) technical requirements of contacting piece material, fastener adopts the scaffold of prior art to clasp, the bolt tightening torsional moment of fastener is not less than 40Nm, and be not more than 65Nm, the quantity of fastener is more than 2, and the fastener number n that is arranged on the steel pipe of both sides calculates by formula:
Wherein, n is every side fastener number, the result of calculation round numbers, a is that the fastener resisting slipping bearing capacity is got reduction coefficient, between the span 0.7-0.8, preferred value is 0.7, β is the maldistribution coefficient, has inhomogeneities because the load of steel pipe is distributed in main vertical rod, need add the maldistribution coefficient and effectively be estimated with the load of guaranteeing to distribute, between the span 1.3-1.4, be preferably 1.4, N and be the combination wind action vertical rod axial force that places an order, this axial force is by " building operations fastener type steel pipe scaffold technical specification of security " JGJ130-(2011) in the fastener standard in vertical rod Axial Force Calculating formula calculate, adopt the combination wind load, R
cBe fastener resisting slipping Design of Bearing Capacity value, the value of right-angle coupler is by " building operations fastener type steel pipe scaffold technical specification of security " JGJ130-(2011) in to the value setting of right-angle coupler, value is 0.8kN.
Six, wire rope is installed, the front end of channel-section steel is connected by wire rope with the suspension ring of upper strata overhang layer, consist of slant-pull structure, suspension ring are passed in the upper end of wire rope, and the lower end is enclosed within its bolt the front end of the channel-section steel of main vertical rod both sides, wire rope requires to guarantee clear and coherent, must not stop with the parts such as other steel pipes, and form broken line shape, by the two ends of flower basket bolt connecting steel wire ropes, regulate the flower basket bolt on the wire rope, make its degree of tightness appropriateness.
Seven, pre-buried reinforcing steel pipe on the overhang layer of upper strata is reinforced between steel pipe and the main vertical rod cross bar is set, and is connected by fastener between cross bar and reinforcing steel pipe, the main vertical rod.
After construction is finished, check and accept, rearmounted double flute steel builder's jack emphasis is tightened torsional moment by " building operations fastener type steel pipe scaffold technical specification of security " JGJ130-(2010 for fastening bolt) technical requirements detect, channel-section steel anchorage length, anchorage point are by " building operations fastener type steel pipe scaffold technical specification of security " JGJ130-(2010) the technical requirements check, guarantee the tight quality of anchor.
After examination is finished, set up horizontal absolute altitude monitoring point at every section overhang layer four jiaos, regularly horizontal measuring point is carried out repetition measurement, observe the sedimentation situation.
Steel pipe should adopt Ф 48.3 * 3.6 steel pipes in the utility model, quality meets national standard number and is GB/T700-(2006) Q235 level steel is fixing in " structural carbon steel ", steel tube surface should be straight smooth, the crack does not have, scab, layering, dislocation, firmly curved, burr, impression and dark stroke road, the steel tubing matter method of inspection should meet national standard number and be GB/T228-(2002) regulation of " metal tensile test method ", quality and outer diameter of steel pipes, wall thickness, the deviation of end face etc. should meet " building operations fastener type steel pipe scaffold technical specification of security " JGJ130-(2010) in regulation.
The channel-section steel material should meet national standard number and be GB/T700-(2006) " structural carbon steel " or the GB/T1591-(2008) regulation of " low-alloy high-tensile structural steel ", the channel-section steel surface must be smooth, non-corroding, there are enough bending resistance opposing distances in the cross section, and its deflection deformation should satisfy the industrial design requirement under full load conditions.
Anchoring piece and suspension ring material should meet standard GB/T 1499.1-(2008) requirement of HPB235 grade reinforcing steel in " concrete reinforcement steel part 1: hot calendering round bar ".
The fastener quality and performance should meet standard GB/T 15831-(2006) requirement of " steel tube scaffold clasp ", the opening part minimum range is not less than 5mm when clamping steel pipe, must not destroy when steel pipe bolt tightening torsional moment arrives 65Nm.
Scaffold is removed and must successively be carried out from top to down, reinforces steel pipe 21 and must successively remove with scaffold, and scaffold is removed to removing the double flute steel below lower floor's overhang layer.
Embodiment one:
6-7 the engineering overall floorage in certain scientific and technological industry garden is 139610.52m
2, frame structure, B1,20 layers on the ground highly is 85.6m, typical floor floor height 3.95m.Fastener type steel pipe scaffold is landed in 1 ~ 9 layer of employing of project, scaffolding height 31.6m; 9 ~ 16 layers is the rearmounted double flute steel builder's jack of first paragraph, scaffolding height 27.65m; 16 layers are the rearmounted double flute steel builder's jack of second segment, scaffolding height 26.35m to the top.The inboard main vertical rod of this scaffold from building apart from 0.3m, transfer 0.8m, advance 1.5m, step pitch 1.8m adopts the off-load of encorbelmenting of two No. 16 channel-section steels, the cantilever span 1.3m of channel-section steel, anchoring section length 1.8m.
Embodiment two:
Certain logistics storage building engineering overall floorage is 21896.11m
2, the building height is 39.48m, engineering is six layers of reinforced concrete frame structure, basement one deck, one, two high 9m layer by layer, three to six high 5m layer by layer.Fastener type steel pipe scaffold is landed in 1 ~ 4 layer of employing of project, scaffolding height 23m; 4 layers is rearmounted double flute steel builder's jack to the top, scaffolding height 17m.In this scaffold vertical rod from building apart from 0.4m, transfer 0.9m, advance 1.5m, step pitch 1.8m adopts the off-load of encorbelmenting of two No. 16 channel-section steels, the cantilever span 1.5m of channel-section steel, anchoring section length 2m.
Embodiment three:
Certain city square engineering overall floorage is 122562m
2, frame structure, underground 2 layers, 29 layers on the ground, building height is 93.6m, typical floor floor height 2.8m.Project annex top 3-15 layer adopts and lands fastener type steel pipe scaffold, scaffolding height 33.6m; 15 ~ 24 layers is the rearmounted double flute steel builder's jack of first paragraph, scaffolding height 25.2m; 15 layers are the rearmounted double flute steel builder's jack of second segment, scaffolding height 23.25m to the top.In this scaffold vertical rod from building apart from 0.3m, transfer 0.8m, advance 1.5m, step pitch 1.8m adopts the off-load of encorbelmenting of two No. 16 channel-section steels, the cantilever span 1.3m of channel-section steel, anchoring section length 1.8m.
The utility model is after but the overhang layer concrete reaches the some strength bearing load, the double flute steel of encorbelmenting is set in overhang layer scaffold upright rod both sides, the double flute steel is fixing structurally by anchoring piece, the double flute steel is put additional short steel pipes on the end, use respectively a plurality of fasteners with short steel pipes and main vertical rod fastening, antiskid by fastener moves passes to the Load Transfer of vertical rod on the channel-section steel of encorbelmenting to the both sides short steel pipes again, carry out off-load, pedestal as new one suspension scaffold, and suspension centre is set in the overhang layer of overhang layer upper strata draws the channel-section steel off-load of encorbelmenting as safety stock by wire rope is counter, save man-hour, improve the wind lotus ability of resisting of scaffold.
Claims (9)
1. rearmounted double flute steel builder's jack, comprise that two row complex roots are arranged on the main vertical rod (4) in building lower floor overhang layer (1) outside, it is characterized in that: described lower floor overhang layer (1) is provided with channel-section steel (3), the front end of channel-section steel (3) extends to outside lower floor's overhang layer (1), the both sides of main vertical rod (4), be provided with three above anchoring pieces (2) at channel-section steel (3), the lower end of anchoring piece (2) is arranged in lower floor's overhang layer (1), on the channel-section steel (3), be welded with reinforcing rib group (7) on the opposite position of main vertical rod (4), the top of reinforcing rib group (7), the upper surface of channel-section steel (3) is provided with steel pipe (6), the bottom of steel pipe (6) is against on the upper surface of channel-section steel (3), pass through respectively the staggered snapping of fastener (5) between main vertical rod (4) and two steel pipes (6), between channel-section steel (3) and anchoring piece (2) and in the gap between the channel-section steel (3), be provided with timber wedge (14), the upper end of lower floor's overhang layer (1) is provided with upper strata overhang layer (9), upper strata overhang layer (9) is provided with suspension ring (10), suspension ring (10) are connected by wire rope (8) with channel-section steel (3), the lower end of wire rope (8) is enclosed within on the channel-section steel (3), suspension ring (10) are passed in the upper end of wire rope (8), and the two ends of wire rope (8) connects by flower basket bolt.
2. rearmounted double flute steel builder's jack according to claim 1 is characterized in that: the stiffener (11) that described reinforcing rib group (7) is connected on by three root beads between the groove part (13) of channel-section steel (3) forms.
3. rearmounted double flute steel builder's jack according to claim 2, it is characterized in that: be welded with spacer bars (12) on the upper surface of described stiffener (11) top, channel-section steel (3), spacer bars (12) is arranged on the same straight line with main vertical rod (4), and the bottom of steel pipe (6) is enclosed within on the spacer bars (12).
4. rearmounted double flute steel builder's jack according to claim 3, it is characterized in that: the opening direction of described channel-section steel (3) arranges on the contrary.
5. rearmounted double flute steel builder's jack according to claim 4, it is characterized in that: described anchoring piece (2) is comprised of bolt (18) and the cover plate (19) of U font, bolt (18) is arranged in lower floor's overhang layer (1), the two ends pin on bolt (18) top stretches out in outside the upper surface of lower floor's overhang layer (1), two channel-section steels (2) are arranged between the pin of two ends, top, bolt (18) bottom is provided with structure reinforcing rib (17), structure reinforcing rib (17) is arranged in lower floor's overhang layer (1), cover plate (19) is fastened on by nut on the two ends pin of bolt (18), and cover plate (19) is pressed on the channel-section steel (2).
6. rearmounted double flute steel builder's jack according to claim 4, it is characterized in that: described anchoring piece (2) is by bolt (18), cover plate (19) and reinforcement steel plate (20) form, described bolt (18) inserts in lower floor's overhang layer (1) from the lower surface of lower floor's overhang layer (1), the two ends pin on bolt (18) top stretches out in the upper surface of lower floor's overhang layer (1), two channel-section steels (2) are arranged between the pin of two ends, between the lower surface of bolt (18) bottom and lower floor's overhang layer (1), be provided with and strengthen steel plate (20), cover plate (19) is fastened on the two ends pin of bolt (18) by nut, is pressed on the channel-section steel (2).
7. it is characterized in that according to claim 5 or 6 described rearmounted double flute steel builder's jacks: described anchoring piece (2) is separately positioned on the front end of lower floor's overhang layer (1) and is arranged on the forward and backward both sides, rear end of lower floor's overhang layer (1).
8. rearmounted double flute steel builder's jack according to claim 7, it is characterized in that: the spacing between the described stiffener (11) is 100mm.
9. rearmounted double flute steel builder's jack according to claim 8, it is characterized in that: described upper strata overhang layer (9) is provided with reinforces steel pipe (21), reinforce between steel pipe (21) and the main vertical rod (4) and be provided with cross bar (22), be connected by fastener (5) between cross bar (22) and reinforcing steel pipe (21), the main vertical rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220386432 CN202706497U (en) | 2012-08-03 | 2012-08-03 | Postpositional double U-steel cantilever falsework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220386432 CN202706497U (en) | 2012-08-03 | 2012-08-03 | Postpositional double U-steel cantilever falsework |
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| Publication Number | Publication Date |
|---|---|
| CN202706497U true CN202706497U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220386432 Withdrawn - After Issue CN202706497U (en) | 2012-08-03 | 2012-08-03 | Postpositional double U-steel cantilever falsework |
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| CN (1) | CN202706497U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777022A (en) * | 2012-08-03 | 2012-11-14 | 汕头市建筑工程总公司 | Postpositional double-steel-channel overhanging scaffold and construction method thereof |
| CN110542502A (en) * | 2019-08-26 | 2019-12-06 | 常州第一建筑集团有限公司 | Bearing capacity experimental method for pull-up type overhanging scaffold without pull rod |
-
2012
- 2012-08-03 CN CN 201220386432 patent/CN202706497U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777022A (en) * | 2012-08-03 | 2012-11-14 | 汕头市建筑工程总公司 | Postpositional double-steel-channel overhanging scaffold and construction method thereof |
| CN102777022B (en) * | 2012-08-03 | 2014-11-19 | 深圳市建工建设工程有限公司 | Postpositional double-steel-channel overhanging scaffold and construction method thereof |
| CN110542502A (en) * | 2019-08-26 | 2019-12-06 | 常州第一建筑集团有限公司 | Bearing capacity experimental method for pull-up type overhanging scaffold without pull rod |
| CN110542502B (en) * | 2019-08-26 | 2021-04-23 | 常州第一建筑集团有限公司 | Bearing capacity experimental method for pull-up type overhanging scaffold without pull rod |
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