CN200971603Y - Triangle section builder's jack - Google Patents
Triangle section builder's jack Download PDFInfo
- Publication number
- CN200971603Y CN200971603Y CN 200620126009 CN200620126009U CN200971603Y CN 200971603 Y CN200971603 Y CN 200971603Y CN 200620126009 CN200620126009 CN 200620126009 CN 200620126009 U CN200620126009 U CN 200620126009U CN 200971603 Y CN200971603 Y CN 200971603Y
- Authority
- CN
- China
- Prior art keywords
- crossbeam
- rod member
- diagonal brace
- brace rod
- builder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a triangle steel jettied scaffold, which is characterized in that the scaffold has a beam (1) and a sway rod component (2). Wherein, one end of the beam (1) is communicated with one of the sway rod component (2) end, and the other ends are respectively connected to the outer wall of the building, forming a reserved star shape. The predicted cost of the utility model is 15 to 25 percent of the current scaffold cost, and can be circularly used only after doing the paint rust prevention. The scaffold has advantages of easy installation, removing and transporting, not needing large mechanism, just holding portable tools, thereby saving large labor.
Description
Technical field
The new type scaffold support that the utility model adopts when relating to a kind of the realm of building construction external wall construction.
Background technology
In recent years, because high-rise building is increasing, the selection of scaffold form becomes the focus in the construction gradually, generally has following several: the type that climbs scaffold, the type of encorbelmenting scaffold, console mode scaffold.The type of encorbelmenting scaffold is widely used with the advantage that enterprise can design the processing assembling voluntarily according to the characteristics of building.The type of encorbelmenting scaffold can be divided into fastener type steel pipe builder's jack, shaped steel builder's jack, triangular shaped steel builder's jack etc. again according to selecting the different of material and assembling form.The fastener type steel pipe builder's jack frequently seldom is used very much because of every builder's jack can only satisfy the turnover of layer 2-3 construction builder's jack, adopts the following two kinds of forms that mainly contain of builder's jack now on the construction market in the construction:
1. adopt single 18
#(20
#) the channel-section steel beam of doing to encorbelment, length is about 4m;
2. adopt 8
#(10
#) channel-section steel welding triangular shaped steel builder's jack.
More than two types scaffold all possess a drawback:
First kind: in beam slab, need pre-buried a large amount of Φ 18mm suspension ring reinforcing bar, make full use of the pulling force and the concrete early strength of suspension ring reinforcing bar; Install and remove inconvenience, will cause all wastes of a large amount of embedded bar (Φ 18) by big machinery.
Second kind: pre-embedded steel slab in wallboard, post-150 * 200mm, adopt 8 thereon
#(10
#) channel-section steel is welded into the triangle load-carrying members, also needs gas cutting channel-section steel etc. during dismounting.Cause the damage waste of whole waste of a large amount of embedded bar (Φ 18) and part channel-section steel.
Analyzed the scaffold disadvantage of above two kinds of material, connected, removed turnover performance regularization, tool triangular shaped steel builder's jack strong, easy to use but designed nut.
Summary of the invention
The purpose of this utility model is exactly the deficiency at existing scaffold, but provides a kind of nut to connect, remove turnover performance regularization, tool triangular shaped steel builder's jack strong, easy to use.
The purpose of this utility model can realize by following measure:
A kind of triangular shaped steel builder's jack is characterized in that it is made up of crossbeam 1, diagonal brace rod member 2, and crossbeam 1 one ends are connected with an end of diagonal brace rod member 2, and their other end is connected on the exterior wall of building, and forms with it and fall " ⊿ " shape.
The purpose of this utility model can also realize by following measure:
Crossbeam 1, diagonal brace rod member 2 and the sleeve pipe 3 that is embedded in the building masonry wall are fixedlyed connected.
Diagonal brace rod member 2 is 22.6 ° with the angle that skin forms.
Crossbeam 1 and diagonal brace rod member 2 adopt 10
#Channel-section steel.
Be welded with two 25 reinforcing bars 4 that 10cm is high on the crossbeam 1.
The end that crossbeam 1 is connected with skin is welded with the steel plate that 10mm is thick, 12cm is long, 6cm is wide, and an end that is connected with diagonal brace rod member 2 is welded with plate 5.
The end that diagonal brace rod member 2 is connected with skin is welded with the steel plate that 10mm is thick, 25cm is long, 8cm is wide, and weld seam is not less than 16cm.
Be welded with the steel plate that 10cm is long, 7cm is wide in the end slot steel tank that diagonal brace rod member 2 is connected with crossbeam 1.
Described sleeve pipe 3 adopts the thin-wall steel tube of 20
The utility model is compared with the scaffold of existing other several forms, has the following advantages:
1, pre-buried cost is only for having the 15%-25% of several scaffolds now.
2, turnover property is strong, and the scaffold of this installation form only must be carried out the antirust processing of paint can have enough to meet the need use.
3, install, remove, transportation is very convenient, do not need big machinery, portable light instrument get final product, has saved in a large number manually.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model crossbeam.
Fig. 3 is the structural representation of the utility model diagonal brace rod member.
Fig. 4 is the structural representation of the utility model diagonal brace rod member one end.
Fig. 5 is force analysis figure of the present utility model.
Fig. 6 is the structural representation of channel-section steel.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Now the floor height of house building is generally at 2.8m-3.0m, before construction according to drawing, by the arrangement diagram that code requirement is drawn the load-bearing tripod of setting up of scaffold.During construction, sleeve pipe 3 is embedded in the concrete of building masonry wall, accurate for guaranteeing pre-buried position, it can be welded on the reinforcing bar in the beam slab, sleeve pipe 3 can adopt the thin-wall steel tube of 20.As described in Figure 2, the utility model is at the end welding steel plate that 10mm is thick, 12cm is long, 6cm is wide of crossbeam 1, and on this steel plate, make a call to the hole of two 18, bolt with 18mm is fixed on crossbeam 1 one ends on the top board of building by this hole, and the 18mm bolt is fixedlyed connected with the sleeve pipe 3 in being embedded in building top board body of wall.As shown in Figure 1, the other end of crossbeam 1 is welded with plate 5, and it is that 60mm is wide, 120mm is long, the steel plate of 10mm, its depart from vertical plane about 22.6 ° tilt the below that is welded on crossbeam 1 and above be equipped with a 22 holes, be used for being connected with diagonal brace rod member 2.Upper side wall at crossbeam 1 also is welded with two 25 reinforcing bars that 10cm is high, is used for fixing the position of the pin hand steel pipe 6 of its top.Crossbeam 1 all adopts 10 with diagonal brace rod member 2
#Channel-section steel, welding 10cm is long in the channel-section steel groove of the end that diagonal brace rod member 2 is connected with crossbeam 1,7cm is wide, the steel plate of 10mm, it and diagonal brace rod member 2 form the box-like space (as shown in Figure 4) of hollow, corresponding position, hole also has the hole of 22 on this steel plate and diagonal brace rod member 2 and plate 5, can adopt the bolt of 22 that plate 5 is fixedlyed connected with diagonal brace rod member 2 by this hole.As shown in Figure 3, an end that is connected with skin at diagonal brace rod member 2 is welded with the steel plate that 10mm is thick, 25cm is long, 8cm is wide, its weld seam is not less than 16cm, on this steel plate, have the hole of two 18, and diagonal brace rod member 2 is fixedlyed connected with the sleeve pipe 3 in being embedded in skin with 18 bolts by this hole, the same and skin of diagonal brace rod member 2 forms about about 22.6 ° gradient.
The utility model is when setting up, at first crossbeam 1 is fixed on the building top board with bolt, and then diagonal brace rod member 2 one ends are fixed on the crossbeam 1, the other end with diagonal brace rod member 2 is fixed on the exterior wall of building at last, installation process is promptly finished, and demolishing process is opposite with demolishing process.
Now check that according to building operations fastener type steel pipe scaffold technical specification of security JGJ130-2001, Code for design of steel structures GBJ17-88, building safety evaluation criteria JGJ59-99 carries out the internal stress, stability, the shearing resistance of bolt, the drag checking computations of weldering of lever to the utility model:
1, load calculates
Upper load situation: set up double steel pipe exterior wall scaffold thereon, its material requirements, set up requirement, inspect for acceptance all with the console mode scaffold.Scaffolding height of scaffold was 12 steps on it, and in 1.8 meters of per steps, totally 21.6 meters, the structure construction stage can not considered the heavy load stacking yard, and its force analysis figure sees accompanying drawing 5.
(1) deadweight of upper falsework:
Getting steel pipe is 38.4N/m, fastener 15N/, and bamboo basketry sheet 100N/m
2, Dense mesh screen 5N/m
2, working load 2000N/m
2Vertical 1.8 meters is a computing unit.
Per step deadweight:
Inside and outside vertical rod 1.8 * 38.4=138.24N; Leger 1.8 * 6 * 38.4=414.72N
Little cross bar 1.25 * 38.4=51.84N; Fastener 8 * 15=120N
Bamboo basketry plate 1.8 * 1 * 100=180N; The about 150N of bridging
Safety net 1.8 * 1.8 * 5=16.2N
Add up to 1071N
(2) working load/layer: 1.8 * 1 * 2000=3600N
Consider four step work planes according to the requirement of finishing: i.e. 4 layers * 3600N/ layer=14400N, the deadweight of 12 step scaffolds: 12 step * 1071N/ step=12852N; Because of outer vertical rod is born the load of bridging, Dense mesh screen, leger and fastener than interior vertical rod more, through calculating its ratio N
2Be about 3/5G, N
1Be about 2/5G.
Permanent load partial safety factor 1.2, variable load partial safety factor 1.4, gross weight G is:
G＝1.2×12852+1.4×14400＝35582.4。
N
1＝2/5G＝14233N；N
2＝3/5×G＝21349N
2, lever checking computations
(1) material characteristics (seeing accompanying drawing 6): channel cross-section amasss A=1274mm
2, the radius of inertia: i
x=39.5mm, i
y=14.1mm; Section factor W
x=39.7 * 10
3Mm
3, the centre of form is apart from z
0=15.2mm.
(2) rod member inner forces calculation:
∑ M
O=N
1* 0.25+1.25 * N
2-F
2* 1.108 (0 to F
2Distance)=0
F
2＝(14233×0.25+1.25×21349)/1.108 F
2＝27296.6N
∑M
O’＝3×F
1-N
1×0.25-1.25×N
2＝0 F
1＝10081N
∑M
O”＝N
1×1-1.25×F
3＝0 F
3＝11386N
(3) channel-section steel horizontal gird checking computations:
The maximal bending moment M=F of channel-section steel horizontal gird
3* 0.25=2846N.m
σ＝M/W
x＝2846×10
3/39.7×10
3＝71.7N/mm
2＜215N/mm
2
Shear strength
τ
Max=Q (F
3)/h * d=11386/100 * 5.3 (cross section of channel-section steel web)
=21.5N/mm
2＜fv=125N/mm
2(allowable shearing stress of channel-section steel)
(4) brace internal force and stability checking computations:
Consider brace and channel-section steel crossbeam in being connected making, the center of gravity that crossbeam should be transmitted power acts on the position of form center of brace, avoids stressed one-tenth press-bending state.Therefore when the intensity of checking computations brace, only consider axial pressure, do not consider to bend to the stress effect of inclined member etc.
Normal stress: σ=F
2/ A=27296.6/1274=21.4N/mm
2＜[σ]=215N/mm
2
Stability: λ
x=L
o/ i
x=3250/39.5mm=82.28 φ
x=0.67
δ
x＝F
2/φ
xA＝27296.6/(0.67×1274)
＝31.48N/mm
2＜[σ]＝(215N/mm
2)
λ
y＝L
o/i
y＝3250/14.1mm＝230.5 φ
y＝0.144
δ
y＝F
2N/φ
yA＝27296.6/(0.144×1274)
＝146.45N/mm
2＜[σ]＝(215N/mm
2)
(5) node checking computations:
The shear strength that is connected 2 18 bolts between checking computations channel-section steel crossbeam and structural slab:
τ bolt=F
1/ A=10081/2*254.34 (the bolt sectional area of diameter 18)
=19.8N/mm
2＜f
V(shear strength 125N/mm
2)
The shear strength of pin in checking computations brace and the channel-section steel crossbeam:
τ bolt=F
2/ A=27296.6/303.4 (net sectional areas of diameter 22 bolts)
=90N/mm
2＜f
V(shear strength 125N/mm
2)
The shear strength of checking computations channel-section steel brace bottom bolts (2):
τ bolt=F
2COS22.62 °/A=27296.6 * 0.9126/254.34 * 2
＝48.75N/mm2＜f
V(125N/mm
2)
The checking computations of the soldered between junction plate and crossbeam:
F
2The horizontal force that draws this:
P
x＝sin22.62°×F
2＝0.4104×27296.6＝11202.5N
τ＝P
x/(0.7h
f1)≤τ
h＝11202.5/(0.7×10×10
-3×0.06)
＝24.6×10
6N/m
2＝24.6Mpa≤τ
h＝(125N/mm
2)
The soldered checking computations of crossbeam and flooring 10mm steel plate:
τ＝0.5F
1/(0.7h
f1)≤τ
h＝0.5×10081/(0.7×10×10
-3×0.13)＝4.58×10
6N/m
2＝4.58Mpa≤τ
h＝(125N/mm2)
The checking computations of the soldered of junction plate and brace:
The long 16cm of weld seam
τ＝F
2COS22.62°/0.7×10×10
-3×0.16
＝27296.6×0.9126/1.12×10
-3＝24.3N/m
2≤τ
h＝(125N/mm2)
Every as calculated checking computations all meet intensity and stability requirement.
Claims (9)
1, a kind of triangular shaped steel builder's jack is characterized in that it is made up of crossbeam (1), diagonal brace rod member (2), and crossbeam (1) one end is connected with an end of diagonal brace rod member (2), and their other end is connected on the exterior wall of building, and forms with it
Shape.
2, triangular shaped steel builder's jack according to claim 1 is characterized in that crossbeam (1), diagonal brace rod member (2) and is embedded in the interior sleeve pipe (3) of building masonry wall fixedlying connected.
3,, it is characterized in that diagonal brace rod member (2) and the angle that skin forms are 22.6 ° according to the described triangular shaped steel builder's jack of claim l.
4, triangular shaped steel builder's jack according to claim 1 is characterized in that crossbeam (1) and diagonal brace rod member (2) adopt 10
#Channel-section steel.
5, triangular shaped steel builder's jack according to claim 1 is characterized in that being welded with on the crossbeam (1) two 25 reinforcing bars (4) that 10cm is high.
6, triangular shaped steel builder's jack according to claim 1 is characterized in that the end that crossbeam (1) is connected with skin is welded with the steel plate that 10mm is thick, 12cm is long, 6cm is wide, and an end that is connected with diagonal brace rod member (2) is welded with plate (5).
7, triangular shaped steel builder's jack according to claim 1 it is characterized in that the end that diagonal brace rod member (2) is connected with skin is welded with the steel plate that 10mm is thick, 25cm is long, 8cm is wide, and weld seam is not less than 16cm.
8,, it is characterized in that being welded with the steel plate that 10cm is long, 7cm is wide, 10mm is thick in diagonal brace rod member (2) and the end slot steel tank that crossbeam (1) is connected according to claim 1 or 4 described triangular shaped steel builder's jacks.
9, triangular shaped steel builder's jack according to claim 2 is characterized in that described sleeve pipe (3) adopts the thin-wall steel tube of 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126009 CN200971603Y (en) | 2006-10-11 | 2006-10-11 | Triangle section builder's jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126009 CN200971603Y (en) | 2006-10-11 | 2006-10-11 | Triangle section builder's jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200971603Y true CN200971603Y (en) | 2007-11-07 |
Family
ID=38882861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620126009 Expired - Fee Related CN200971603Y (en) | 2006-10-11 | 2006-10-11 | Triangle section builder's jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200971603Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704663A (en) * | 2012-06-27 | 2012-10-03 | 江苏正威建设有限公司 | Down-stayed type suspension style scaffold |
| CN102733606A (en) * | 2011-04-08 | 2012-10-17 | 中国建筑第八工程局有限公司 | Construction method of high large cantilever structure |
| CN105298100A (en) * | 2015-10-22 | 2016-02-03 | 广州市恒盛建设工程有限公司 | Construction method of cantilever construction platform with ultrahigh cast-in-place flaring structure in cylindrical building |
| CN105736830A (en) * | 2016-04-14 | 2016-07-06 | 中国能源建设集团陕西省电力设计院有限公司 | Piping support joint and construction method |
| CN105736831A (en) * | 2016-04-14 | 2016-07-06 | 中国能源建设集团陕西省电力设计院有限公司 | Piping support node structure and construction method |
| CN107489264A (en) * | 2017-09-26 | 2017-12-19 | 二十二冶集团天津建设有限公司 | Shaped steel adds the high support system construction method of steel pipe scaffold |
| CN110952765A (en) * | 2019-11-20 | 2020-04-03 | 中建四局第六建设有限公司 | Formwork supporting platform for shear wall high-altitude concrete cantilever structure and assembling method of formwork supporting platform |
| CN113907635A (en) * | 2021-10-19 | 2022-01-11 | 中建深圳装饰有限公司 | Cleaning and maintaining system and method for hidden track type exposed frame glass curtain wall |
-
2006
- 2006-10-11 CN CN 200620126009 patent/CN200971603Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733606A (en) * | 2011-04-08 | 2012-10-17 | 中国建筑第八工程局有限公司 | Construction method of high large cantilever structure |
| CN102733606B (en) * | 2011-04-08 | 2015-09-30 | 中国建筑第八工程局有限公司 | The construction method of High Large Cantilever structure |
| CN102704663A (en) * | 2012-06-27 | 2012-10-03 | 江苏正威建设有限公司 | Down-stayed type suspension style scaffold |
| CN105298100A (en) * | 2015-10-22 | 2016-02-03 | 广州市恒盛建设工程有限公司 | Construction method of cantilever construction platform with ultrahigh cast-in-place flaring structure in cylindrical building |
| CN105736830A (en) * | 2016-04-14 | 2016-07-06 | 中国能源建设集团陕西省电力设计院有限公司 | Piping support joint and construction method |
| CN105736831A (en) * | 2016-04-14 | 2016-07-06 | 中国能源建设集团陕西省电力设计院有限公司 | Piping support node structure and construction method |
| CN105736831B (en) * | 2016-04-14 | 2018-01-19 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of construction method of support of pipelines node structure |
| CN105736830B (en) * | 2016-04-14 | 2018-01-19 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of construction method of support of pipelines node |
| CN107489264A (en) * | 2017-09-26 | 2017-12-19 | 二十二冶集团天津建设有限公司 | Shaped steel adds the high support system construction method of steel pipe scaffold |
| CN110952765A (en) * | 2019-11-20 | 2020-04-03 | 中建四局第六建设有限公司 | Formwork supporting platform for shear wall high-altitude concrete cantilever structure and assembling method of formwork supporting platform |
| CN113907635A (en) * | 2021-10-19 | 2022-01-11 | 中建深圳装饰有限公司 | Cleaning and maintaining system and method for hidden track type exposed frame glass curtain wall |
| CN113907635B (en) * | 2021-10-19 | 2022-09-02 | 中建深圳装饰有限公司 | Cleaning and maintaining system and method for hidden track type exposed frame glass curtain wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071107 Termination date: 20091111 |