CN105332506A - Formwork support system for parallel multi-section stair and method for constructing same - Google Patents

Formwork support system for parallel multi-section stair and method for constructing same Download PDF

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Publication number
CN105332506A
CN105332506A CN201510795001.4A CN201510795001A CN105332506A CN 105332506 A CN105332506 A CN 105332506A CN 201510795001 A CN201510795001 A CN 201510795001A CN 105332506 A CN105332506 A CN 105332506A
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CN
China
Prior art keywords
stair
framed bent
half space
bent unit
run
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CN201510795001.4A
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Chinese (zh)
Inventor
孙昭
方怡
王水良
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Shanghai Construction No 5 Group Co Ltd
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Shanghai Construction No 5 Group Co Ltd
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Application filed by Shanghai Construction No 5 Group Co Ltd filed Critical Shanghai Construction No 5 Group Co Ltd
Priority to CN201510795001.4A priority Critical patent/CN105332506A/en
Publication of CN105332506A publication Critical patent/CN105332506A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G13/00Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E04G13/062Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for stairs or steps

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Steps, Ramps, And Handrails (AREA)

Abstract

The invention discloses a formwork support system for a parallel multi-section stair and a method for constructing the same, and relates to the technical field of building construction. By the aid of the formwork support system and the method, problems of long construction periods, easiness in forming cold joints in positions between adjacent stair sections and the like due to the fact that concrete pouring for existing multi-section stairs is constructed by sections can be solved. The formwork support system comprises at least five bent frame units and formworks of (n+2) <th>-section stairs, (n+2) <th>-section rest platforms, (n+3) <th>-section stairs and (n+3) <th>-section rest platforms. The bent frame units include first bent frame units, second bent frame units, third bent frame units, fourth bent frame units and fifth bent frame units, the first bent frame units are erected on poured rest platforms, the second bent frame units are erected on to-be-poured n<th>-section rest platforms, the third bent frame units are erected on to-be-poured (n+1) <th>-section rest platforms, the fourth bent frame units are erected on n<th>-section stairs, and the fifth bent frame units are erected on (n+1) <th>-section stairs; the formworks of the (n+2) <th>-section stairs, the (n+2) <th>-section rest platforms, (n+3) <th>-section stairs and (n+3) <th>-section rest platforms are respectively erected on the fourth bent frame units, the second bent frame units, the fifth bent frame units and the third bent frame units; the bottoms of the bent frame units are connected with supporting seats which are anchored in to-be-poured concrete structures, and the n is a natural number larger than or equal to 1.

Description

The formwork bracing system of run-in index many races stair and construction method thereof
Technical field
The present invention relates to technical field of building construction, particularly a kind of formwork bracing system of run-in index many races stair and construction method thereof.
Background technology
Stair are made up of the bench of continuous step, half space and fender member etc., can be divided into straight stair, two race stair and run stair more by bench.In current building operations, the construction method that run-in index many races stair take segmentation to build more, namely first and second race stair are first constructed, follow-up bench of constructing again after stair concrete reaches the intensity of designing requirement is run until first and second, it is longer to there is the deck construction period in this construction method, easily produces the quality problems such as cold seam (refer to upper and lower two-layer concrete build the time interval and exceed the initial setting time and the construction quality seam that formed) between adjacent flights.
Summary of the invention
Concreting for existing run-in index many races stair adopts section construction, cause the deck construction period longer, and after construction, between adjacent flights, easily there is the problem of cold seam etc., the object of this invention is to provide a kind of formwork bracing system and construction method thereof of run-in index many races stair, at least two-layer half space and stair bench in run-in index many races stair is made to build shaping by disposable integral, adding the resistance to overturning of building structure, can avoiding affecting workmanship because producing cold seam between adjacent flights.
The present invention solves the formwork bracing system of run-in index many races stair that its technical problem adopts, and comprising: at least five the framed bent unit be connected; Be respectively and be set up in the framed bent unit one of building on half space, be set up in and to be built n-th run framed bent unit two on half space, be set up in be built (n+1)th and run framed bent unit three on half space, and built half space and n-th described in being set up in and run n-th between half space and run framed bent unit four on stair, be set up in the n-th race half space and (n+1)th and run (n+1)th between half space and run framed bent unit five on stair; And be erected at the template that n-th+2 of described framed bent unit four, framed bent unit two, framed bent unit five and framed bent unit three runs stair, the n-th+2 race half space, n-th+3 runs stair and the n-th+3 race half space respectively;
The bottom of described framed bent unit four, framed bent unit two, framed bent unit five and framed bent unit three be anchored in be built n-th and run stair, n-th and run half space, (n+1)th and run some bearings that stair and (n+1)th run in half space reinforced concrete structure and be connected; And be supported on the framed bent below the n-th race stair, the n-th race half space, the (n+1)th race stair;
Wherein, n be more than or equal to 1 natural number.
Preferably, described bearing is in " soil " font, and the vertical rod bottom of described framed bent unit is connected on the horizontal part one of described holder top, and the horizontal part two of described bearing bottom is connected with the embedded bar being positioned at half space to be built or stair bench.
Preferably, the horizontal part one of described holder top has a clearance D with the upper surface of the half space of having built or stair bench, and described clearance D is more than or equal to 50mm.
Preferably, the horizontal part two of described bearing bottom and below it half space to be built or stair bench template between be also equipped with prefabricated elongated cement bar cushion block, and described horizontal part two, embedded bar, between cement bar cushion block and described template colligation fix.
Preferably, the vertical rod position one_to_one corresponding in described formwork bracing system in the described framed bent unit of upper and lower layer.
Preferably, the top of described framed bent unit is also provided with adjustable jacking.
Preferably, the rough ground that some wooden a tree, used in making timber for boats are set up also is provided with between described adjustable jacking and the template of half space to be built or stair bench.
In addition, present invention also offers a kind of construction method of run-in index many races stair, step is as follows:
One, framed bent unit set up by half space set up the template waiting to build the (n+1)th race half space in the lump thereon building, the template that to be built n-th race stair, n-th run half space, the (n+1)th race stair and (n+1)th run half space sets up framed bent unit four, framed bent unit two, framed bent unit five and framed bent unit three respectively, and described framed bent unit four, framed bent unit two, framed bent unit five are connected with the bearing be anchored in concrete structure to be built with framed bent unit three; Described framed bent unit four, framed bent unit two, framed bent unit five and framed bent unit three are set up n-th+2 successively and runs the template that stair, n-th+2 run half space, the n-th+3 race stair and n-th+3 run half space;
Two, primary concreting n-th runs the concrete that stair, n-th run half space, the (n+1)th race stair, (n+1)th run half space, the n-th+2 race stair, the n-th+2 race half space, n-th+3 run stair and the n-th+3 race half space;
Three, after the intensity that concrete reaches designing requirement, cut described bearing and form removal, repeat above-mentioned steps one to step 2, described run-in index many races stair of from bottom to top progressively constructing.
Preferably, in described step one, described bearing is in " soil " shape, the horizontal part two of described bearing bottom is connected with the embedded bar in half space to be built or stair bench, the vertical rod bottom of described framed bent unit is connected on the horizontal part one of described holder top, and the horizontal part one of described holder top has a clearance D with the upper surface of the half space of having built or stair bench, described clearance D is more than or equal to 50mm.
Preferably, in described step one, the top of described framed bent unit is also provided with adjustable jacking, is also provided with the rough ground that some wooden a tree, used in making timber for boats are formed between described adjustable jacking and the template of half space to be built or stair bench.
Effect of the present invention is:
One, the formwork bracing system of run-in index many races stair of the present invention, comprise relying on and build the template that half space is run in framed bent unit one that half space sets up and top (n+1)th thereof, run stair, n-th complete formwork n-th and run framed bent unit four, framed bent unit two, framed bent unit five and the framed bent unit three set up successively above the template of half space, the (n+1)th race stair, and set up above above-mentioned framed bent unit n-th+2 runs stair, the n-th+2 race half space, n-th+3 runs the template that stair and n-th+3 run half space; Set up because above-mentioned formwork bracing system is disposable, at least two-layer half space and stair bench in run-in index many races stair is made to build shaping by disposable integral, thus adding the resistance to overturning of building structure, can avoiding affecting workmanship because producing cold seam between adjacent flights; And, the half space that this formwork bracing system primary concreting is at least two-layer and stair bench, while raising construction quality, also shorten the construction period, operating efficiency is greatly improved; In addition, after concrete structure reaches the intensity of designing requirement, cutting bearing can realize the form removal work of this form bracing system, above-mentioned framed bent unit can be applied to the concrete pouring construction of upper strata half space and stair bench again, improve the turnover utilization rate of material, decrease spillage of material, and then reduce engineering cost.
Two, the construction method of run-in index many races stair of the present invention, first, building template half space being set up the (n+1)th race half space, wait to build at formwork and run stair with build that half space is connected n-th, n-th runs half space and (n+1)th runs pre-buried bearing in stair, and with this pre-buried bearing for supporting framed bent unit and the template of erection corresponding upper strata concrete structure, set up n-th+2 thus successively and run stair, n-th+2 runs half space, n-th+3 runs the template that stair and n-th+3 run half space, and the n-th race stair can be obtained by primary concreting concrete, n-th runs half space, (n+1)th runs stair, (n+1)th runs half space, n-th+2 runs stair, n-th+2 runs half space, n-th+3 runs stair and n-th+3 runs half space, realize the primary concreting of at least two-layer interior half space of parallel work many races stair and stair bench, avoid conventional construction method gradation and build the hidden danger of quality causing easily producing cold seam between adjacent flights, and primary concreting multilayer half space and stair bench, simplify the tradition step of running stair gradation construction more, improve operating efficiency, shorten the construction period.
Accompanying drawing explanation
Fig. 1 is the floor map of run-in index many races stair of one embodiment of the invention;
Fig. 2 is the lateral view of the formwork bracing system of run-in index many races stair of one embodiment of the invention;
Fig. 3 is the partial enlarged drawing of the part A of Fig. 2.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the formwork bracing system of run-in index many races stair that the present invention proposes and construction method thereof are further described.According to explanation below and claims, advantages and features of the invention will be clearer.Below by cited embodiment by reference to the accompanying drawings, technology contents of the present invention and feature will be described in detail.Need to illustrate in addition, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.For sake of convenience, hereinafter described " on ", D score is consistent with the upper and lower direction of accompanying drawing, but this can not become the restriction of technical solution of the present invention.
Embodiment one: composition graphs 1 to Fig. 3 illustrates the formwork bracing system of run-in index many races stair of the present invention, the template of building stair base plate (namely having built half space 10) top stair to be built and half space that the present embodiment is ± 0.000 for absolute altitude is set up, and this formwork bracing system comprises at least five the framed bent unit be connected; Be respectively to be set up in and build framed bent unit 1 on half space 10 and top thereof the second template of running half space 12 to be built, be set up in and to be built first run framed bent unit 2 32 on half space 11, be set up in be built second and run framed bent unit 3 33 on half space 12, and be set up in and build half space 10 and first and run first between half space 11 and run framed bent unit 4 34 on stair 21, be set up in the first race half space 11 and second and run second between half space 12 and run framed bent unit 5 35 on stair 22; And the three-quarter-turn stair 23, the 3rd be erected at respectively on framed bent unit 4 34, framed bent unit 2 32, framed bent unit 5 35 and framed bent unit 3 33 runs the template that half space 13, the 4th runs stair 24 and the 4th race half space 14;
The bottom of above-mentioned framed bent unit 4 34, framed bent unit 2 32, framed bent unit 5 35 and framed bent unit 3 33 be anchored in be built first and run stair 21, first and run half space 11, second and run stair 22 and the second some bearings 50 run in half space 12 reinforced concrete structure are connected, and be supported in the first race stair 21, first and run half space 11, second and run and set up on framed bent below stair 22; During construction, primary concreting concrete obtains the first race stair 21, the first race half space 11, second connected successively and runs stair 22, second race half space 12, three-quarter-turn stair 23, the 3rd race half space 13, the 4th race stair 24 and the 4th race half space 14; After above-mentioned concrete structure reaches design strength, cutting bearing 50 realizes form removal.In the present embodiment, above-mentioned framed bent unit 31,32,33,34,35 is formed by Φ 48mm × 3.0m steel pipe manufacturing, and cross bar and brace step pitch are 1200mm, and in half space, vertical pole ' s span is 600mm, and in stair bench, vertical pole ' s span is not more than 450mm.
The formwork bracing system of run-in index many races stair of the present invention, comprise relying on and build the template that half space 12 is run in framed bent unit 1 that half space 10 sets up and top second thereof, run stair 21, first complete formwork first and run framed bent unit 4 34, framed bent unit 2 32, framed bent unit 5 35 and the framed bent unit 3 33 set up successively above the template of half space 11, second race stair 22, and the template that the three-quarter-turn stair 23 set up above above-mentioned framed bent unit, the 3rd runs half space 13, the 4th race stair 24 and the 4th run half space 14; Set up because above-mentioned formwork bracing system is disposable, at least two-layer half space and stair bench in run-in index many races stair is made to build shaping by disposable integral, thus adding the resistance to overturning of building structure, can avoiding affecting workmanship because producing cold seam between adjacent flights; And, the half space that this formwork bracing system primary concreting is at least two-layer and stair bench, while raising construction quality, also shorten the construction period, operating efficiency is greatly improved; In addition, after concrete structure reaches the intensity of designing requirement, cutting bearing 50 can realize the form removal work of this form bracing system, above-mentioned framed bent unit can be applied to the concrete pouring construction of upper strata half space and stair bench again, improve the turnover utilization rate of material, decrease spillage of material, and then reduce engineering cost.
As shown in Figure 3, above-mentioned bearing 50 is in " soil " font, and vertical rod 36 bottom of framed bent unit is connected on the horizontal part 1 on bearing 50 top, and the horizontal part 2 52 of bearing 50 bottom is connected with the embedded bar 40 in half space to be built or stair bench.Because the horizontal part 1 on bearing 50 top forms inverse-T-shaped structure with vertical bar, the vertical rod 36 of framed bent unit can be set in above-mentioned inverse-T-shaped structure fast and stably, after concrete pouring construction completes, cut this bearing 50, i.e. dismountable framed bent unit, thus realize taking mould and form removal fast, improve operating efficiency; And the horizontal part 2 52 of this bearing 50 bottom is affixed with the embedded bar 40 in concrete structure to be built, and ensure that the stability that bearing 50 is connected with concrete structure.Preferred Φ 12 reinforcement welding of bearing 50 of the present embodiment forms.
Please continue to refer to Fig. 3, the horizontal part 1 on bearing 50 top has a clearance D with the upper surface of the half space of having built or stair bench, and this clearance D is more than or equal to 50mm, and above-mentioned size is arranged, be convenient to cutting tool and stretch into the vertical bar cutting off bearing 50 in this gap, realize smooth form removal.
For strengthening the support strength of above-mentioned bearing 50, as shown in Figure 3, the horizontal part 2 52 of bearing 50 bottom and below it half space to be built or stair bench template 41 between be also equipped with prefabricated elongated cement bar cushion block 42, horizontal part 2 52, embedded bar 40, between cement bar cushion block 42 and template 41 colligation fix; Meanwhile, also by cement nail fixed level portion 2 52, cement bar cushion block 42 and template 41; The setting of cement bar cushion block 42, for bearing 50 provides reliable and stable support, and then ensure that follow-up framed bent is built and the construction quality of concreting; In the present embodiment, the through hole passed by iron wire 43 in template 41 can be selected, above-mentioned component colligation is fixed, certainly, also can adopt the connectors such as steel wire, all can realize above-mentioned functions.
Better, the position one_to_one corresponding of vertical rod in upper and lower layer framed bent unit in the present embodiment formwork bracing system, so be provided with and be beneficial to the sole plate that pressure is successively passed to building by framed bent unit, and then ensure the safety of form bracing system and concrete structure.
As shown in Figure 2, the top of framed bent unit 31,32,33,34,35 is also provided with adjustable jacking 37, the fine setting of above-mentioned framed bent cell height can be realized by adjustable jacking 37, to ensure that template is built and the construction quality of concreting, in the present embodiment, the concrete structure of adjustable jacking 37 is prior art, repeats no more herein.Also be provided with the rough ground that some wooden a tree, used in making timber for boats are set up between above-mentioned adjustable jacking 37 and the template of half space to be built or stair bench, rough ground plays stable support template.The rough ground of the present embodiment adopts 50 × 100mm200mm wood a tree, used in making timber for boats to build.
Embodiment two: composition graphs 1 to Fig. 3 illustrates the construction method of run-in index many races stair of the present invention, and step is as follows:
One, half space 10 set up framed bent unit 1 and set up the template waiting to build the second race half space 12 thereon building, to be built first template of running stair 21, first race half space 11, second race stair 22 and the second race half space 12 sets up framed bent unit 4 34, framed bent unit 2 32, framed bent unit 5 35 and framed bent unit 3 33 respectively, and framed bent unit 4 34, framed bent unit 2 32, framed bent unit 5 35 are connected with the bearing 50 be anchored in concrete structure above-mentioned to be built with framed bent unit 3 33; Framed bent unit 4 34, framed bent unit 2 32, framed bent unit 5 35 and framed bent unit 3 33 are set up three-quarter-turn stair 23, the 3rd successively and runs the template that half space 13, the 4th runs stair 24 and the 4th race half space 14; Herein, the stair that the 3rd race is above need arrange by stair framed bent design standard the system such as bar, horizon bar rod member of sweeping the floor;
Two, primary concreting first runs stair 21, first and runs the concrete that half space 11, second runs stair 22, second race half space 12, three-quarter-turn stair 23, the 3rd runs half space 13, the 4th race stair 24 and the 4th run half space 14;
Three, after the intensity that concrete reaches designing requirement, the also form removal of cutting bearing 50, repeats above-mentioned steps one to step 2, run-in index many races stair of from bottom to top progressively constructing.
The construction method of run-in index many races stair of the present invention, first, building template half space 10 being set up the second race half space 12, wait to build at formwork and run stair 21 with build that half space 10 is connected first, first runs half space 11 and second runs pre-buried bearing 50 in stair 22, and be the framed bent unit and the template that support erection corresponding upper strata concrete structure with this pre-buried bearing 50, set up three-quarter-turn stair 23 successively thus, 3rd runs half space 13, 4th runs the template that stair 24 and the 4th run half space 14, and the first race stair 21 can be obtained by primary concreting concrete, first runs half space 11, second runs stair 22, second runs half space 12, three-quarter-turn stair 23, 3rd runs half space 13, 4th runs stair 24 and the 4th runs half space 14, realize the primary concreting of at least two-layer interior half space of parallel work many races stair and stair bench, avoid conventional construction method gradation and build the hidden danger of quality causing easily producing cold seam between adjacent flights, and primary concreting multilayer half space and stair bench, simplify the tradition step of running stair gradation construction more, improve operating efficiency, shorten the construction period, in addition, framed bent unit realizes stable support by the bearing 50 be embedded in concrete structure in advance, and after bearing 50 cuts, each framed bent unit can complete dismounting drop into subsequent construction, and material turnover utilization rate is improved, and reduce further engineering cost.
In above-mentioned steps one, bearing 50 is in " soil " shape, and the horizontal part 2 52 of bearing 50 bottom is connected with the embedded bar 40 in half space to be built or stair bench, and vertical rod 36 bottom of framed bent unit is connected on the horizontal part 1 on bearing 50 top.Bearing 50 upper horizontal portion 1 and vertical bar form inverse-T-shaped structure, the vertical rod of framed bent unit can be erected in above-mentioned inverse-T-shaped structure fast and stably, the horizontal part 1 of holder top has a clearance D with the upper surface of the half space of having built or stair bench, and this clearance D is more than or equal to 50mm.After the intensity that concrete reaches designing requirement, cutting bearing 50, i.e. dismountable above-mentioned framed bent unit, realize taking mould and form removal fast, improve operating efficiency.
In above-mentioned steps one, the top of framed bent unit is also provided with adjustable jacking 37, is also provided with the rough ground that some wooden a tree, used in making timber for boats 34 form between adjustable jacking 37 and the template of half space to be built or stair bench.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.

Claims (10)

1. the formwork bracing system of run-in index many races stair, is characterized in that, comprising:
At least five the framed bent unit be connected; Be respectively and be set up in the framed bent unit one of building on half space, be set up in and to be built n-th run framed bent unit two on half space, be set up in be built (n+1)th and run framed bent unit three on half space, and built half space and n-th described in being set up in and run n-th between half space and run framed bent unit four on stair, be set up in the n-th race half space and (n+1)th and run (n+1)th between half space and run framed bent unit five on stair; And be erected at the template that n-th+2 of described framed bent unit four, framed bent unit two, framed bent unit five and framed bent unit three runs stair, the n-th+2 race half space, n-th+3 runs stair and the n-th+3 race half space respectively;
The bottom of described framed bent unit four, framed bent unit two, framed bent unit five and framed bent unit three be anchored in be built n-th and run stair, n-th and run half space, (n+1)th and run some bearings that stair and (n+1)th run in half space reinforced concrete structure and be connected; And be supported on the framed bent below the n-th race stair, the n-th race half space, the (n+1)th race stair;
Wherein, n be more than or equal to 1 natural number.
2. formwork bracing system according to claim 1, it is characterized in that: described bearing is in " soil " font, the vertical rod bottom of described framed bent unit is connected on the horizontal part one of described holder top, and the horizontal part two of described bearing bottom is connected with the embedded bar being positioned at half space to be built or stair bench.
3. formwork bracing system according to claim 2, is characterized in that: the horizontal part one of described holder top has a clearance D with the upper surface of the half space of having built or stair bench, and described clearance D is more than or equal to 50mm.
4. the formwork bracing system according to Claims 2 or 3, it is characterized in that: the horizontal part two of described bearing bottom and below it half space to be built or stair bench template between be also equipped with prefabricated elongated cement bar cushion block, and described horizontal part two, embedded bar, between cement bar cushion block and described template colligation fix.
5. the formwork bracing system according to any one of claims 1 to 3, is characterized in that: the vertical rod position one_to_one corresponding in described formwork bracing system in the described framed bent unit of upper and lower layer.
6. the formwork bracing system according to any one of claims 1 to 3, is characterized in that: the top of described framed bent unit is also provided with adjustable jacking.
7. formwork bracing system according to claim 6, is characterized in that: be also provided with the rough ground that some wooden a tree, used in making timber for boats are set up between described adjustable jacking and the template of half space to be built or stair bench.
8. the construction method of run-in index many races stair, utilize the formwork bracing system of the run-in index many races stair as described in any one of claim 1 to 7, step is as follows:
One, framed bent unit set up by half space set up the template waiting to build the (n+1)th race half space in the lump thereon building, the template that to be built n-th race stair, n-th run half space, the (n+1)th race stair and (n+1)th run half space sets up framed bent unit four, framed bent unit two, framed bent unit five and framed bent unit three respectively, and described framed bent unit four, framed bent unit two, framed bent unit five are connected with the bearing be anchored in concrete structure to be built with framed bent unit three; Described framed bent unit four, framed bent unit two, framed bent unit five and framed bent unit three are set up n-th+2 successively and runs the template that stair, n-th+2 run half space, the n-th+3 race stair and n-th+3 run half space;
Two, primary concreting n-th runs the concrete that stair, n-th run half space, the (n+1)th race stair, (n+1)th run half space, the n-th+2 race stair, the n-th+2 race half space, n-th+3 run stair and the n-th+3 race half space;
Three, after the intensity that concrete reaches designing requirement, cut described bearing and form removal, repeat above-mentioned steps one to step 2, described run-in index many races stair of from bottom to top progressively constructing.
9. construction method according to claim 8, it is characterized in that: in described step one, described bearing is in " soil " shape, the horizontal part two of described bearing bottom is connected with the embedded bar in half space to be built or stair bench, the vertical rod bottom of described framed bent unit is connected on the horizontal part one of described holder top, and the horizontal part one of described holder top has a clearance D with the upper surface of the half space of having built or stair bench, described clearance D is more than or equal to 50mm.
10. construction method according to claim 8 or claim 9, it is characterized in that: in described step one, the top of described framed bent unit is also provided with adjustable jacking, is also provided with the rough ground that some wooden a tree, used in making timber for boats are formed between described adjustable jacking and the template of half space to be built or stair bench.
CN201510795001.4A 2015-11-18 2015-11-18 Formwork support system for parallel multi-section stair and method for constructing same Pending CN105332506A (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN106677528A (en) * 2017-02-17 2017-05-17 广西壮族自治区冶金建设公司 Penetration-free type template support system jacking part and installation method
CN107916783A (en) * 2017-12-26 2018-04-17 宁波二十冶建设有限公司 A kind of landing slab Construction Support protection structure and construction method
CN112663953A (en) * 2021-01-26 2021-04-16 山西三建集团有限公司 Method for erecting support vertical pipe in multi-stair-section stair formwork support system
CN113653319A (en) * 2021-09-02 2021-11-16 中国二十二冶集团有限公司 Integrated formwork erecting method for multi-stair section and rest platform
CN114809614A (en) * 2022-05-10 2022-07-29 广州机施建设集团有限公司 Four-run stair formwork supporting system and construction method

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Application publication date: 20160217