CN102966240B - Construction method for high-altitude reinforced concrete outer cantilevered structure - Google Patents
Construction method for high-altitude reinforced concrete outer cantilevered structure Download PDFInfo
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- CN102966240B CN102966240B CN201210505441.8A CN201210505441A CN102966240B CN 102966240 B CN102966240 B CN 102966240B CN 201210505441 A CN201210505441 A CN 201210505441A CN 102966240 B CN102966240 B CN 102966240B
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- cantilevered
- segment
- construction
- support platform
- job practices
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- 238000010276 construction Methods 0.000 title claims abstract description 47
- 239000011150 reinforced concrete Substances 0.000 title abstract 2
- 239000004567 concrete Substances 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 239000000725 suspensions Substances 0.000 claims description 9
- 230000003014 reinforcing Effects 0.000 claims description 4
- 239000002965 ropes Substances 0.000 claims description 4
- 210000001138 Tears Anatomy 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 methods Methods 0.000 abstract 2
- 238000005034 decoration Methods 0.000 abstract 1
- 239000002245 particles Substances 0.000 description 5
- 238000010586 diagrams Methods 0.000 description 3
- 239000010410 layers Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009416 shuttering Methods 0.000 description 1
Abstract
Description
Technical field
The present invention relates to suspended structure at high altitude construction field, relate in particular the job practices of the outer cantilevered structure of a kind of high-altitude steel concrete.
Background technology
Large-scale high-rise public building, in order to meet facade or sunshade requirement, often arranges the outer cantilevered structure of steel concrete of outstanding exterior wall.In recent years, this cantilevered structure length that overhangs is more and more longer, and its form bracing system becomes the construction Difficulties of total.Because cantilevered structure is higher apart from ground, adopt console mode support system economically with technical all infeasible, normally adopt shaped steel cantilever platform as the bearing surface of falsework and scaffold.
As shown in Figure 1, traditional support platform 9 arranges some suspension rods 91 or support bar 92, and when support platform 9 is positioned, the mode that employing is drawn is lower than the mode cost of support, in order to facilitate the setting of suspension rod 91 suspension centres, this support platform 9 needs to reduce by two to three layers thus, and the height of setting up like this falsework or scaffold is also higher, load is also larger, and then has construction complexity and set up the shortcoming that cost is high.
Summary of the invention
The job practices that the object of the present invention is to provide the outer cantilevered structure of a kind of high-altitude steel concrete, it has been simplified shaped steel and has chosen setting up of platform outward, has reduced support height, and has reliable, the easy to operate and obvious feature of economic and social benefits of construction safety.
In order to reach above-mentioned purpose, solution of the present invention is:
The job practices of the outer cantilevered structure of a kind of high-altitude steel concrete, wherein, this job practices by outer cantilevered structure by interior section construction outward, be about to outer cantilevered structure at least divide headed by segment structure and at least one time segment structure, between this head segment structure and lower segment structure and be all provided with constuction joint between different lower segment structure, this head segment structure has inner end portion and chooses portion outward;
This job practices comprises the steps:
1. the bottom mounting support platform of cantilevered structure outside;
2. the first segment structure of the outer cantilevered structure of construction, this head segment structure is chosen the length of portion at home and abroad and should under the situation without increase suspension rod and diagonal brace, be constructed at support platform;
3. first segment structure is carried out to concrete curing, then add overhung construction between first segment structure outside and support platform;
4. the lower segment structure of the outer cantilevered structure of construction, and carries out concrete curing to lower segment structure, if current hypomere structural outer also has lower segment structure, again adds overhung construction;
5. repeating step is 4. until complete all lower segment structures;
6. form removal, construction decorative engineering, tears scaffold and overhung construction piecemeal open, and dismantles support platform and complete the construction of external cantilevered structure.
Further, to choose the length of portion be at home and abroad 1-1.5m to described first segment structure.
Further, this support platform is shaped steel outrigger.
Further, this support platform is positioned at lower one deck of outer cantilevered structure.
Further, before adding overhung construction, be also included in the step that first segment structure or lower segment structure carry out local stiffening.
Further, this overhung construction is selected from a kind of in wire rope, reinforcing bar or shaped steel.
Adopt after said structure, the present invention relates to the job practices of the outer cantilevered structure of a kind of high-altitude steel concrete, it passes through the section construction of outer cantilevered structure from-inner-to-outer, and allow the load of this support platform also apply stage by stage, so can utilize self intensity of molded structure in outer cantilevered structure to bear deadweight and by pull bar, bear the load of support platform, thereby greatly reduce support platform load, optimize support platform structure stress, greatly reduce the specification of shaped steel and suspension rod.
Compared with prior art, the present invention has simplified shaped steel and has chosen setting up of platform outward, reduces support height, improves construction safety, and have easy to operate, the obvious effect of economic and social benefit.
Accompanying drawing explanation
Fig. 1 is at the structural representation of construction support platform during cantilevered structure in prior art;
Fig. 2 the present invention relates to job practices China and foreign countries' cantilevered structure of the outer cantilevered structure of a kind of high-altitude steel concrete and the structural representation of support platform;
Fig. 3 is the schematic diagram of the first segment structure of construction;
Fig. 4 is the schematic diagram that adds overhung construction;
Fig. 5 for increasing the schematic diagram that can suspend aggregated(particle) structure in midair when carrying out local stiffening.
In figure:
The first segment structure 11 of outer cantilevered structure 1
The outer portion 112 that chooses of inner end portion 111
Lower segment structure 12 constuction joints 13
Support platform 2 overhung constructions 3
Aggregated(particle) structure girder steel 4
Support platform 9 suspension rods 91
Support bar 92
The specific embodiment
In order further to explain technical scheme of the present invention, below by specific embodiment, the present invention will be described in detail.
As shown in Figures 2 to 5, the job practices of the outer cantilevered structure 1 of a kind of high-altitude steel concrete the present invention relates to, this job practices by outer cantilevered structure 1 by interior section construction outward, be about to outer cantilevered structure 1 at least divide headed by segment structure 11 and at least one time segment structure 12, as shown in Figure 2, in the present embodiment, this outer cantilevered structure 1 has first segment structure 11 and two lower segment structures 12; Between this head segment structure 11 and lower segment structure 12 and be all provided with constuction joint 13 between different lower segment structure 12,11 of this head segment structures have inner end portion 111 and choose portion 112 outward.
This job practices, specifically comprises the steps:
1. the bottom mounting support platform 2 of cantilevered structure 1 outside; In the present embodiment, this support platform 2 is shaped steel outrigger;
2. the first segment structure 11 of the outer cantilevered structure 1 of construction, this head segment structure 11 China and foreign countries choose the length of portion 112 and should under the situation without increase suspension rod and diagonal brace, construct at support platform 2; Please refer to shown in Fig. 3, preferably, it is 1-1.5m that these head segment structure 11 China and foreign countries choose portion's 112 length, the same with normal construction for this inner end portion 111, without unnecessary description;
3. first segment structure 11 is carried out to concrete curing, then add overhung construction 3 between first segment structure 11 outsides and support platform 2, this overhung construction 3 can be wire rope, reinforcing bar or shaped steel; Specifically please refer to shown in Fig. 4;
4. the lower segment structure 12 of the outer cantilevered structure 1 of construction, and carries out concrete curing to lower segment structure 12, if current lower segment structure 12 outsides also have lower segment structure 12, again adds overhung construction 3;
5. repeating step is 4. until complete all lower segment structures 12, and then reaches the structure shown in Fig. 2;
6. form removal, construction decorative engineering, tears scaffold and overhung construction 3 piecemeal open, and dismantles support platform 2 and complete the construction of external cantilevered structure 1.
Like this, the present invention relates to the job practices of the outer cantilevered structure 1 of a kind of high-altitude steel concrete, it passes through outer cantilevered structure 1 from-inner-to-outer section construction, and allow the load of this support platform 2 also apply stage by stage, so can utilize self intensity of molded structure in outer cantilevered structure 1 to support support platform 2, thereby greatly reduce support platform 2 loads, greatly reduce the specification of shaped steel and suspension rod, lower one deck that this support platform like this is positioned at outer cantilevered structure 1 can reach requirement, as shown in Figure 2.
In order to ensure leading portion, build the structure of moulding and can bear the pulling force of vertical and horizontal direction, before adding overhung construction 3, be also included in the step that first segment structure 11 or lower segment structure 12 carry out local stiffening.When concrete reinforcing, can adopt following several technical scheme:
One: increase beam slab arrangement of reinforcement, but it is unsuitable too many to increase quantity of reinforcement, otherwise can affects the performance of original structure.
Two: retain the shuttering supporting of stressed beam slab and lower some layers of beam slab thereof, if desired extension supporting.
Three: the concrete slab of the single-beam of framework because not being connected, generally can not bear suspention pull bar (rope) oblique pull horizontal component, girt can be set on single-beam, suffered horizontal component is passed to other position, as the beam column region of framework or there is panel ceiling for storied building etc.;
Four: when pull bar or stay cord do not have suspensible structure, can add aggregated(particle) structure girder steel 4, by aggregated(particle) structure girder steel 4, suffered suspention pulling force is passed to main structure (as girder, post), this aggregated(particle) structure girder steel 4 should preferentially adopt the square girder steel of lattice, specifically please refer to shown in Fig. 5.
In sum, compared with prior art, the present invention has simplified shaped steel and has chosen setting up of platform outward, reduces support height, improves construction safety, and have easy to operate, the obvious effect of economic and social benefit.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210505441.8A CN102966240B (en) | 2012-11-30 | 2012-11-30 | Construction method for high-altitude reinforced concrete outer cantilevered structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210505441.8A CN102966240B (en) | 2012-11-30 | 2012-11-30 | Construction method for high-altitude reinforced concrete outer cantilevered structure |
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| CN102966240A CN102966240A (en) | 2013-03-13 |
| CN102966240B true CN102966240B (en) | 2014-02-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206075B (en) * | 2013-04-26 | 2015-05-20 | 中国化学工程第三建设有限公司 | Suspension platform for construction of steel reinforced concrete cantilever structure |
| CN103470036B (en) * | 2013-09-04 | 2016-02-03 | 中建三局第一建设工程有限责任公司 | A kind of outer construction method of choosing structure |
| CN104100090B (en) * | 2014-07-17 | 2015-05-06 | 成都市第四建筑工程公司 | High-altitude comprehensive construction method of big-cantilever steel truss structure |
| CN106988520B (en) * | 2017-03-01 | 2020-06-09 | 中国建筑第八工程局有限公司 | Construction method and support system for high-rise suspension structure |
| CN107227814B (en) * | 2017-06-19 | 2019-05-03 | 中国建筑第二工程局有限公司 | A kind of large cantilever concrete structure section construction method |
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| EP1441088A2 (en) * | 2003-01-24 | 2004-07-28 | Alvaro Mesaguer Matamoros | Multifunction scaffolding |
| CN101538896A (en) * | 2009-04-03 | 2009-09-23 | 标力建设集团有限公司 | Construction method for jettied structure at high attitude of high-rise building |
| CN201546436U (en) * | 2009-11-27 | 2010-08-11 | 江苏扬建集团有限公司 | Platform for construction of high-altitude suspension structures |
| CN102454295A (en) * | 2010-10-18 | 2012-05-16 | 五冶集团上海有限公司 | Method for constructing large-sized cantilever beam at ultrahigh position |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102061743B (en) * | 2010-11-26 | 2012-05-23 | 清华大学建筑设计研究院 | Frame-shear wall structure building of dismantling-free prefabricated reinforced concrete formwork and construction method thereof |
| CN102444203B (en) * | 2011-09-15 | 2013-06-19 | 浙江城建建设集团有限公司 | High-altitude long-span overhanging corridor type reinforced concrete structure and construction method |
| CN103122693A (en) * | 2011-11-18 | 2013-05-29 | 中国建筑第七工程局有限公司 | Multi-layer oversized-area reinforced concrete ground seamless construction method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1441088A2 (en) * | 2003-01-24 | 2004-07-28 | Alvaro Mesaguer Matamoros | Multifunction scaffolding |
| CN101538896A (en) * | 2009-04-03 | 2009-09-23 | 标力建设集团有限公司 | Construction method for jettied structure at high attitude of high-rise building |
| CN201546436U (en) * | 2009-11-27 | 2010-08-11 | 江苏扬建集团有限公司 | Platform for construction of high-altitude suspension structures |
| CN102454295A (en) * | 2010-10-18 | 2012-05-16 | 五冶集团上海有限公司 | Method for constructing large-sized cantilever beam at ultrahigh position |
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| CN102966240A (en) | 2013-03-13 |
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