CN103089017B - Negative ledges establishes adjustable stirrup - Google Patents
Negative ledges establishes adjustable stirrup Download PDFInfo
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- CN103089017B CN103089017B CN201110347537.1A CN201110347537A CN103089017B CN 103089017 B CN103089017 B CN 103089017B CN 201110347537 A CN201110347537 A CN 201110347537A CN 103089017 B CN103089017 B CN 103089017B
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Abstract
Negative ledges establishes adjustable stirrup to belong to the realm of building construction, is that a kind of steel concrete stressed plate negative reinforcement locates special turnover tool.The present invention is (civil engineering, municipal administration, bridge, hydraulic engineering etc.) in reinforced concrete construction, every one deck (secondary) can be substituted in need manually bend or traditional reinforcing bar stirrup of welding production, negative reinforcement can be located between highness change to-5mm+8 ㎜.Technical characteristic is: the bayonet socket respectively arranging 10 different level sizes in the positive and negative both direction of adjustable stirrup standard component, and in two ends are provided with (outward) screw thread and concrete construction thickness absolute altitude index line, and be furnished with the connector adjusting adjustable stirrup standard component bayonet socket height.Which simplify construction sequence, improve speed of application, ensure that workmanship.The disposable consumption reinforcing bar of traditional stirrup, artificial, electric power and equipment machine-team are stopped.It is applicable to set up special production service enterprise for construction, Construction unit's adequate and systematic service, or construction enterprises are used for the production of this enterprise and outsourcing service.
Description
Technical field
The present invention relates to architectural engineering construction technique category, is that structure of reinforced concrete stressed plate negative reinforcement locates special turnover tool.
Background technology
At present at home and abroad in all reinforced concrete constructions, in order to ensure the location of negative reinforcement in all kinds of steel concrete stressed plate, nearly all manually bend in a large amount of use, human weld's reinforcing bar stirrup etc., use maximum several forms:
Note: specify by building operations authorities of each province: manually to bend, human weld's stirrup reinforcing bar, reinforcing bar materials diameter is less than in plate muscle rank of being advocated, but in practice of construction, the main muscle of stirrup one or same rank larger than the main muscle of concrete slab, require the elongated setting of stirrup in design and construction, every square metre is no less than 1.
At present a large amount of use manually bend, there is inherent shortcoming and defect in human weld's stirrup:
1, manually bend, the stirrup of the welding production mode of production owing to being cooperative mechanical hand-manipulated processing, product accuracy is low, error is large, be difficult to the accurate location ensureing the stressed negative reinforcement of original structure design armored concrete slab, error is even more at 10 ㎜ to 30 ㎜.Because most negative reinforcement in construction is difficult to ensure design attitude (negative bending moment rib reduction), thus the anti-seismic performance, cracking resistance, integral rigidity etc. that result in concrete floor reduce greatly, have had a strong impact on the using function of structure.
2, the reinforcing bar of reinforcing bar stirrup is made, have plenty of the leftover bits and pieces using job site, corrosion of steel bar is serious, and in concrete construction, all reinforcing bar stirrups all will be cast in steel concrete forever, both waste ample resources, have long term negative effect to the capability and performance of steel concrete again.
3, all types of stirrup of manual manufacture needs to choose the reinforcing bar of different-diameter, scale, cutting, artificial (machinery) are bending, welding production, artificial colligation location and installation, consume artificial and corresponding steel, electric power, reinforcing steel bar machinery, electric welding machine machine-team resource and welding rod.Tradition reinforcing bar stirrup system peace expense increases with thickness of cast-in-situ reinforced concrete slab and increases, in the thick cast-in-situ reinforced concrete slab of 100 ㎜, traditional reinforcing bar stirrup system peace comprehensive cost reaches 5.6 yuan/㎡, and in the thick cast-in-situ reinforced concrete slab of 600 ㎜, traditional reinforcing bar stirrup system peace expense reaches 19 yuan/㎡.
4, job specfication strict demand reinforcing bar stirrup footing must not directly be seated in template, and after preventing stripping, reinforcing bar stirrup footing contacts with air, and the endurance quality destroying steel concrete of thoroughly becoming rusty and impact are decorated.This will increase reinforcing bar stirrup footing cushion block (granite or the identical cement mortar bedding block etc. of concrete grade) in construction, and constructing operation quite bothers and unstable.
Summary of the invention
The invention solves the technological deficiency that existing traditional stirrup is difficult to overcome in reinforced concrete construction, it solve negative reinforcement location in steel concrete stressed plate and be difficult to accurate control problem, ensure that steel concrete (building, municipal administration, bridge, the engineerings such as water conservancy project) the accurate location of various types of stressed plate negative reinforcement and distributing bar in construction, ensure that the former design supporting capacity of steel concrete, the rigidity of structure and shock resistance, improve the endurance quality of steel concrete, traditional reinforcing bar stirrup in reinforced concrete construction can be stopped and use (except extremely special), thus reach saving steel, manually, power consumption, the energy-saving and emission-reduction objects such as mechanical one-shift.If adopt negative ledges to establish adjustable stirrup to construct, almost can unlimitedly reuse, every square meter uses total cost between 1 yuan to 5 yuan, 50%-80% is reduced than using traditional reinforcing bar stirrup expense, the workmanship of enterprise in charge of construction can be increased substantially, simplify construction sequence, increase the economic benefit of enterprise.
The present invention bears ledges and establishes adjustable stirrup (hereinafter referred to as adjustable stirrup), each is adjustable, and stirrup standard component (see Fig. 1, Fig. 2) can positive and negative both direction use, positive and negative both direction is respectively provided with 10 bayonet sockets, bayonet socket height 30 ㎜, is applicable to the screens of diameter 30 below ㎜ reinforcing bar.Wherein side is fixed bayonet socket and can be controlled to support distance lower die plate height 15 ㎜, 65 ㎜, 75 ㎜, 125 ㎜, 135 ㎜, 190 ㎜, 200 ㎜, 255 ㎜ at the bottom of orlop negative reinforcement.Opposite side fixes bayonet socket can control to support distance lower die plate height at the bottom of orlop negative reinforcement: 15 ㎜, 70 ㎜, 80 ㎜, 130 ㎜, 140 ㎜, 195 ㎜, 205 ㎜, 255 ㎜.Wherein two ends (15 ㎜) bayonet socket, mainly controls floor bottom positive moment reinforcement concrete cover (15 ㎜) effect.
In order to flexible and changeable control steel concrete stressed plate negative reinforcement location, inside the present invention is adjustable stirrup standard component two ends, devise (outward) screw thread connection in 35 ㎜ height.Design supporting five connectors simultaneously, (outward) screw thread in 10 ㎜ to 35 ㎜ is designed with respectively outside connector two ends, connect part one (Fig. 3) to connect with adjustable stirrup standard component and use, standard component can be heightened and fix bayonet socket size 2 ㎜ to 7 ㎜, connect the adjustable stirrup standard component of part two (Fig. 4) and connect use, standard component can be heightened and fix bayonet socket size 5 ㎜ to 10 ㎜, connect the adjustable stirrup standard component of part three (Fig. 5) and connect use, standard component can be heightened and fix bayonet socket size 10 ㎜ to 20 ㎜, connect the adjustable stirrup standard component of part four (Fig. 6) and connect use, standard component can be heightened and fix bayonet socket size 20 ㎜ to 30 ㎜, connect part five (Fig. 7) to connect with adjustable stirrup standard component and use, standard component can be heightened and fix bayonet socket size 30 ㎜ to 50 ㎜.This adjustable stirrup standard component and five kinds of connectors combinationally use, and can stressed negative (just) moment at support in steel concrete stressed plate is positioned at arbitrarily between 15 ㎜ to 305 ㎜, control accuracy be within 1 ㎜-2 ㎜.
In order to be difficult to control phenomenon to thickness of cast-in-place concrete when overcoming reinforced concrete construction, in the positive and negative both direction of stirrup standard component that the present invention is adjustable, be provided with 120 ㎜, 180 ㎜, 240 ㎜ tri-road concrete construction reference mark index lines, constructability, management, Construction unit personnel monitor cast-in-place concrete construction thickness at any time.
With connector four (Fig. 6), two adjustable stirrup standard components are connected, then other connector supporting, can to the comprehensive positioning control of stressed negative reinforcement in the thick following armored concrete slab of 600 ㎜.
With two each and every one connectors four (Fig. 6), three adjustable stirrup standard components are connected, then other connector supporting, can to the comprehensive positioning control of stressed negative reinforcement in the thick following armored concrete slab of 900 ㎜.
With three connectors four (Fig. 6), four adjustable stirrup standard components are connected, then other connector supporting, can to the comprehensive positioning control of stressed negative reinforcement in the thick following armored concrete slab of 1200 ㎜.
With four connectors four (Fig. 6), five adjustable stirrup standard components are connected, then other connector supporting, can to the comprehensive positioning control of stressed negative reinforcement in the thick following armored concrete slab of 1500 ㎜.
After the reinforced bar engineering colligation such as floor, basis completes, can determine that negative reinforcement needs level altitude by calculating, (need adjust adjustable stirrup and connector bayonet socket accurate size), generally arranging that an adjustable stirrup calculates by every square metre need by adjustable stirrup quantity.By adjustable stirrup separately or be stuck on lower floor of negative reinforcement crosspoint place reinforcing bar with connector assembly.After concrete construction has been vibrated, stone has fully supported negative reinforcement through vibrating, and now, can to hold above adjustable stirrup and to rotate 90 ° of taking-up stirrups, takes out adjustable stirrup position and need supplement a little concrete and mend and shake.Though for subsequent use by adjustable stirrup withdrawal cleaning cartonning.
Negative ledges establishes adjustable stirrup to use absolute altitude to calculate: adjustable stirrup design uses absolute altitude=design thickness of slab-reinforcement cover-upper strata negative bending moment rib diameter-lower floor's negative bending moment rib diameter.
Embodiment 1:
Certain Engineering Floor design thickness 110 ㎜, concrete grade C30, in plate, arrangement of reinforcement is one-level 10 Shuan Cengshuanxiang@200, reinforced concrete protective layer 15 ㎜.
Adjustable stirrup design uses absolute altitude=110 ㎜-15 ㎜-10 ㎜-10 ㎜=75 ㎜.
Adjustable stirrup standard component A face bayonet socket is of a size of 75 ㎜, right-angled intersection place lower floor φ 10 negative reinforcement is stuck in bayonet socket (75 ㎜) and is close to.Its lower floor φ 10 positive bending moment steel bar stress, if any positive bending moment steel bar stress, can be stuck in bayonet socket (15 ㎜) by adjustable stirrup bottom, can reduce artificial other facility control panel lower rebar topping work of installation like this.Consider floor top two-way one-level 10 negative reinforcement diameter poor rigidity less than normal, adjustable stirrup installing space is to be advisable between 800mm*800mm-600mm*600mm.
Can with reference to 120 ㎜ scale control lines on adjustable stirrup standard component when concrete construction, monitoring system design thickness is that 110 ㎜ concrete constructions ensure situation constantly.
Embodiment 2:
Certain Engineering Floor design thickness 200 ㎜, concrete grade C30, in plate, arrangement of reinforcement is secondary 14 Shuan Cengshuanxiang@150, reinforced concrete protective layer 15 ㎜.
Adjustable stirrup design uses absolute altitude=200 ㎜-15 ㎜-14 ㎜-14 ㎜=157 ㎜.
Be connected with the reverse internal thread of adjustable stirrup standard component A with connector four (figure six) short (20 ㎜) outer silk, with thread, connector four (figure six) is adjusted to 27 ㎜, adjustable stirrup standard component bayonet socket (130 ㎜) has been increased to 157 ㎜.Make as example, place 1 adjustable stirrup configuration by every square metre.With adjusting the adjustable stirrup assembly of absolute altitude; right-angled intersection place lower floor secondary 14 negative reinforcement to be stuck in bayonet socket (130 ㎜) and to be close to; connector four has been increased by under adjustable stirrup standard component; primary standard part bayonet socket (15 ㎜) has been not suitable for controlling the work of lower rebar concrete cover, and other facility need be selected to control bottom positive moment reinforcement concrete cover.
Examine 240 ㎜ scale control lines on adjustable stirrup standard component when concrete construction and increased by 27 ㎜, line of actual control height has reached 267 ㎜, with 67 ㎜ under the adjustable stirrup assembly line of actual control for reference, moment monitored concrete design thickness 200 ㎜ construction guarantee situation.
Embodiment 3:
Certain engineering foundation base plate thick 1200 ㎜, concrete grade C30, double-layer double-direction configures three grade of 20 Gang Jin@150 ㎜, reinforced concrete protective layer 40 ㎜.
Adjustable stirrup design uses absolute altitude=1200 ㎜-40 ㎜-20 ㎜-20 ㎜=1120 ㎜.
With connector four (Fig. 6) by 4 adjustable stirrup standard components along A to coupling together, with connector four (Fig. 6) direction filament (25 ㎜), adjustable stirrup standard component internal thread is connected increase by 20 ㎜ again, utilize former bayonet socket (200 ㎜ are high) on adjustable stirrup standard component.Calculating formula: 300 ㎜ * 3+200 ㎜+20 ㎜=1120 ㎜.Because adjustable stirrup height increases, need by adjustable stirrup standard component and connector stable connection, after reinforcement foundation colligation completes, immediately adjustable stirrup assembly installing card is close on negative reinforcement right-angled intersection place lower floor reinforcing bar.Consider that the main muscle of negative reinforcement is that bidirectional three-step 20 configures, adjustable stirrup installing space can expand 1200 ㎜-1300 ㎜ to, and every two square metres arrange one and are advisable.
Concrete construction THICKNESS CONTROL calculates: 300 ㎜ * 4+20 ㎜ (connector four Fig. 6)=1220 ㎜.
Concrete construction THICKNESS CONTROL is exposed cast-in-situ concrete 20 ㎜ with adjustable stirrup assembly and is advisable.
Three kinds of stirrup making, installation, consumptive material, power consumption, quality evaluation table
Claims (3)
1. negative ledges establishes an adjustable stirrup, it is characterized in that comprising it for the making of round tube shape ferrous materials, positive and negative both direction can use, and is provided with multiple draw-in groove and highly indicates.
2. negative ledges according to claim 1 establishes adjustable stirrup, it is characterized in that the every side of the adjustable stirrup of standard is provided with 10 different level draw-in grooves, or expansion makes thickness and the length of material, and expands quantity and the size of draw-in groove.
3. negative ledges according to claim 1 establishes the mating connector of adjustable stirrup, it is characterized in that negative ledges establishes adjustable stirrup standard component two ends to be provided with internal thread or outer silk thread, be convenient to the stirrup assembly that mating connector matching used with it is combined into various height dimension, the rational height of negative reinforcement can be fixed in the reinforced concrete floor of 15 ㎜ to 1500 ㎜ height and reinforced concrete foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110347537.1A CN103089017B (en) | 2011-11-04 | 2011-11-04 | Negative ledges establishes adjustable stirrup |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110347537.1A CN103089017B (en) | 2011-11-04 | 2011-11-04 | Negative ledges establishes adjustable stirrup |
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| Publication Number | Publication Date |
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| CN103089017A CN103089017A (en) | 2013-05-08 |
| CN103089017B true CN103089017B (en) | 2016-04-20 |
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| CN201110347537.1A Expired - Fee Related CN103089017B (en) | 2011-11-04 | 2011-11-04 | Negative ledges establishes adjustable stirrup |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201172916Y (en) * | 2008-04-07 | 2008-12-31 | 贺绍勤 | Reinforcement trough split head of concrete products for reinforced concrete slab |
| CN201400957Y (en) * | 2009-04-27 | 2010-02-10 | 潍坊昌大建设集团有限公司 | Stripped steel bar split heads |
| CN202755667U (en) * | 2011-11-04 | 2013-02-27 | 孟宪超 | Negative moment reinforcement erection adjustable stirrup |
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2011
- 2011-11-04 CN CN201110347537.1A patent/CN103089017B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201172916Y (en) * | 2008-04-07 | 2008-12-31 | 贺绍勤 | Reinforcement trough split head of concrete products for reinforced concrete slab |
| CN201400957Y (en) * | 2009-04-27 | 2010-02-10 | 潍坊昌大建设集团有限公司 | Stripped steel bar split heads |
| CN202755667U (en) * | 2011-11-04 | 2013-02-27 | 孟宪超 | Negative moment reinforcement erection adjustable stirrup |
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| Publication number | Publication date |
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| CN103089017A (en) | 2013-05-08 |
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