CN109723176A - The large-span prestressed more piece truss bars superimposed sheets of one kind and construction method - Google Patents
The large-span prestressed more piece truss bars superimposed sheets of one kind and construction method Download PDFInfo
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- CN109723176A CN109723176A CN201811556157.7A CN201811556157A CN109723176A CN 109723176 A CN109723176 A CN 109723176A CN 201811556157 A CN201811556157 A CN 201811556157A CN 109723176 A CN109723176 A CN 109723176A
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- truss bars
- prefabricated panel
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- external prestressing
- construction method
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Abstract
The present invention relates to a kind of large-span prestressed more piece truss bars superimposed sheets and its construction methods, comprising: (1) mode standard truss bars prefabricated panel selects suitable modular dimension batch production to make；(2) splicing of truss bars prefabricated panel；(3) additional bar is set above close edge joint position；(4) in close jigsaw presstressed reinforcing steel punch position reserving hole；(5) cast-in-place overlapping board concrete；(6) external prestressing steels are worn, are anchored in perimeter support girder tensioning, presstressed reinforcing steel is according to the uniformly distributed arrangement of design.Proposed adoption external prestressing technique of the present invention, apply external prestressing technique when can pass through in-site installation, to reach similar with common truss superimposed sheet production process and construction when component plant produced, when assembled in situ is installed, by the application of external prestressing, superimposed sheet is constrained, realizes effective connection with perimeter support beam, beam bar anchorage capacity destruction and the concrete fracture for preventing splicing position, realize Design and Build.
Description
Technical field
The invention belongs to technical field of civil engineering, more particularly to a kind of large-span prestressed more piece truss bars overlappings
Plate and construction method.
Background technique
According to " notice of green building action scheme " (country's in January, 2013 publication), " built about assembled is greatly developed
The instruction built " (2016 Nian9Yue State Council formally issue), " " 13 " assembled architecture action scheme " (firmly the portion of building prints
Hair), assembled architecture becomes the industrialized developing direction of building trade, add establish promote the design of building industrialization, construction,
The type of standard component is enriched in the standards system of the links such as component production, the standardization of pushing structure part, component, component, is improved logical
With property and substitutability, the fabricated construction system for being suitble to industrialized production is promoted, accelerates development the prefabricated of construction project and dress
With technology, improving building industrialization Integration ofTechnology level becomes a urgent task of assembled architecture development.
Superimposed sheet is structural elements important in fabricated construction, and it is by one layer that it, which is by prefabricated in conjunction with cast in place process,
Cast-in-place concrete is cast in oneself through on prefabricated prefabricated panel, to be fabricated to prefabricated plus cast-in-place laminated floor slab, truss
Reinforcing bar prefabricated board is current domestic superimposed sheet prefabricated panel the most popular, and mainly uses the prefabricated panel with protruding bar,
But there is unsuitable cast-in-place concrete in component production, construction site installation and need to prop up in the prefabricated panel with protruding bar
The problems such as mould, wet construction amount are big and quality cannot be guaranteed.And the biggish unidirectional and bidirectional laminated slab of span is due to by it
The demand of size limitation in transit and factory's modularization production is not suitable for carrying out batch Prefabrication in factory, therefore needs
The biggish unidirectional and bidirectional laminated slab of span is divided into several plates, by the connection of piece, plate is spliced into and meets work
The biggish close piece of span that journey needs is unidirectional and bidirectional laminated slab.But due to the presence of piece, cause concrete discontinuous,
Crack-resistant performance of concrete cannot be played, more early so as to cause component, structure crack, and piece position concrete stress is more
It concentrates, if concrete cannot be constrained well, concrete is easily caused to be crushed in advance, to influence the bearing capacity and deformation energy of plate
Power.Proposed adoption external prestressing technique of the present invention solves the mechanical deficiencies of joggle truss superimposed sheet.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of large-span prestressed more piece truss bars superimposed sheets and
Construction method.Proposed adoption external prestressing technique of the present invention, it applies external prestressing technique when can pass through in-site installation, from
And reach similar with common truss superimposed sheet production process and construction when component plant produced, meet the production of building industrialization component
The requirement of mechanization when assembled in situ is installed, by the application of external prestressing, constrains superimposed sheet, realizes and perimeter support beam
Effective connection, prevent splicing position beam bar anchorage capacity destroy and concrete fracture, realize Design and Build.
The present invention is achieved through the following technical solutions, and one aspect of the present invention provides a kind of large-span prestressed more pieces
The construction method of truss bars superimposed sheet, comprising the following steps:
(1) mode standard truss bars prefabricated panel, this bottom plate can choose suitable modular dimension batch production production；
(2) splicing of truss bars prefabricated panel: prefabricated panel is supported by bottom periphery supporting beam, is laid on floor beam lattice
It is interior, bracket is set on perimeter support beam and shelves close jigsaw；
(3) additional bar is set above close edge joint position；
(4) in close jigsaw presstressed reinforcing steel punch position reserving hole；
(5) cast-in-place overlapping board concrete；
(6) external prestressing steels are worn, are anchored in perimeter support girder tensioning, presstressed reinforcing steel is according to the uniformly distributed arrangement of design.
Preferably, the mode standard truss bars prefabricated panel splices in perimeter support beam lattice, piece quantity
Take 1-4.
Preferably, prefabricated panel designs truss bars, for can be with compared with large span and the demanding engineering of anti-seismic performance
Prefabricated panel with ribbing is taken to add truss bars mode.
Preferably, additional bar is arranged in splicing bottom plate seam crossing；It is reserved that external prestressing steels position is worn in superimposed sheet
Then hole pours overlapping layers cast-in-place concrete.
Preferably, wearing external prestressing steels and anchoring in perimeter support girder tensioning, presstressed reinforcing steel can be according to floor beam
Lattice size is continuously arranged, when longest floor structure is no more than 50 meters, uninterruptedly can continuously arrange both ends tensioning.
(1) conquassation that fractures of seam crossing concrete can be prevented.
According to prestressed concrete present principles, prestressing force can be equivalent to the even distributed force opposite with presstressed reinforcing steel curvature,
Prestressing force will have a rest effect to splice plate in this way, to prevent, seam crossing additional bar is slid and splice plate does not connect
It fractures and is crushed as shown in Figure 1 caused by continuous.
(2) recoverability after the whole anti-seismic performance of floor system can be increased and shaken.
The use of stress technique can make structure under routine use or small shake effect, by the effect of connection between component
Structure can be made to keep globality；When structure earthquake higher by earthquake intensity, while structural elements does not damage substantially, even
It connects region itself and generates moderate finite deformation with dissipation energy, thus achieve the purpose that increase structure ductility, if can reasonably optimize company
Construction is connect, post-seismic deformation can also be made to disappear and reduce residual deformation, it might even be possible to replace component after earthquake, completely recovery structure
Function, therefore, prestressing force pc structure can be more convenient, and be repaired after economically realizing shake.
(3) high efficiency and green economizing type type of construction may be implemented.
Truss bars prefabricated board is current domestic superimposed sheet prefabricated panel the most popular, and mainly using protruding bar
Prefabricated panel, but the prefabricated panel with protruding bar needs cast-in-place concrete periphery, and construction is caused to need formwork, wet construction
The problems such as amount is big and the main force part quality in periphery cannot be guaranteed.The close jigsaw of the present invention directly rests on perimeter support beam ox
On leg, reduce wet construction amount, improve construction efficiency, saves formwork, while reducing the influence to environment.
(4) meet the needs of industrialized production
Mode standardization design splice plate size and protruding bar removal, may be implemented reduce plant produced mold type from
And reach millwork, intelligent production and the standardization and reusability of on-site hoisting frame, meet construction industry work
Industry metaplasia, which produces, to be needed.
(5) meet the requirement of construction industry future developing trend.
Fabricated construction is currently in initial stage, due to not solving there are also many technical problems, currently mainly across
Degree is smaller, uses in the more intensive residential housing of vertical supporting member.But with the disappearance of China human mortality bonus, building trade
Generalling use prefabricated assembled is an irreversible trend, and assembled architecture system is following inevitable to big across, heavy duty greatly
The development of type public building, then the ten big technologies that prestressing technique promotes and applies always as the Ministry of Construction first is that being suitble to the development
The indispensable technology type of trend.
A kind of large-span prestressed more piece truss bars superimposed sheets obtained according to above-mentioned construction method.
The invention has the benefit that
(1) proposed adoption external prestressing technique of the present invention, it applies external prestressing technique when can pass through in-site installation, thus
Reach similar with common truss superimposed sheet production process and construction when component plant produced, meets building industrialization component manufacturing machine
The requirement of tool when assembled in situ is installed, by the application of external prestressing, constrains superimposed sheet, realizes and perimeter support beam
Effectively connection prevents beam bar anchorage capacity destruction and the concrete fracture at splicing position, realizes Design and Build.
(2) the piece quantity of the more piece superimposed sheet floorings of the present invention can realize 1-4, and external prestressing connection piece is formed
The external prestressing steels arrangement form of whole more piece laminated floor slabs；Water in the floorboard plane of bracket is arranged in perimeter support beam
Flat constraint construction.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is close stacked plywood prestress application schematic diagram；
Fig. 2 is the top view of large-span prestressed more piece truss bars superimposed sheets；
Fig. 3 is the main view of large-span prestressed more piece truss bars superimposed sheets；
Fig. 4 is the schematic diagram at the splicing seams of large-span prestressed more piece truss bars superimposed sheets；
Fig. 5 is the schematic diagram at the splicing seams of large-span prestressed more piece truss bars superimposed sheets.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
With reference to the accompanying drawing and specific embodiment is further described application principle of the invention.
Embodiment 1, a kind of construction method of large-span prestressed more piece truss bars superimposed sheets, comprising the following steps:
(1) mode standard truss bars prefabricated panel, this bottom plate can choose suitable modular dimension batch production production；
(2) splicing of truss bars prefabricated panel: prefabricated panel is supported by bottom periphery supporting beam, is laid on floor beam lattice
It is interior, bracket is set on perimeter support beam and shelves close jigsaw；
(3) additional bar is set above close edge joint position；
(4) in close jigsaw presstressed reinforcing steel punch position reserving hole；
(5) cast-in-place overlapping board concrete；
(6) external prestressing steels are worn, are anchored in perimeter support girder tensioning, presstressed reinforcing steel is according to the uniformly distributed arrangement of design.
In the present embodiment, the mode standard truss bars prefabricated panel splices in perimeter support beam lattice, piece number
Measure 1-4.
In the present embodiment, prefabricated panel designs truss bars, for can compared with large span and the demanding engineering of anti-seismic performance
To take prefabricated panel with ribbing to add truss bars mode.
In the present embodiment, additional bar is set in splicing bottom plate seam crossing；It is pre- that external prestressing steels position is worn in superimposed sheet
It boxes out hole, then pours overlapping layers cast-in-place concrete.
In the present embodiment, wears external prestressing steels and anchored in perimeter support girder tensioning, presstressed reinforcing steel can be according to flooring
Beam lattice size is continuously arranged, when longest floor structure is no more than 50 meters, uninterruptedly can continuously arrange both ends tensioning.
(1) conquassation that fractures of seam crossing concrete can be prevented.
According to prestressed concrete present principles, prestressing force can be equivalent to the even distributed force opposite with presstressed reinforcing steel curvature,
Prestressing force will have a rest effect to splice plate in this way, to prevent, seam crossing additional bar is slid and splice plate does not connect
It fractures and is crushed as shown in Figure 1 caused by continuous.
(2) recoverability after the whole anti-seismic performance of floor system can be increased and shaken.
The use of stress technique can make structure under routine use or small shake effect, by the effect of connection between component
Structure can be made to keep globality；When structure earthquake higher by earthquake intensity, while structural elements does not damage substantially, even
It connects region itself and generates moderate finite deformation with dissipation energy, thus achieve the purpose that increase structure ductility, if can reasonably optimize company
Construction is connect, post-seismic deformation can also be made to disappear and reduce residual deformation, it might even be possible to replace component after earthquake, completely recovery structure
Function, therefore, prestressing force pc structure can be more convenient, and be repaired after economically realizing shake.
(3) high efficiency and green economizing type of construction may be implemented.
Truss bars prefabricated board is current domestic superimposed sheet prefabricated panel the most popular, and mainly using protruding bar
Prefabricated panel, but the prefabricated panel with protruding bar needs cast-in-place concrete periphery, and construction is caused to need formwork, wet construction
The problems such as amount is big and the main force part quality in periphery cannot be guaranteed.The close jigsaw of the present invention directly rests on perimeter support beam ox
On leg, reduce wet construction amount, improve construction efficiency, saves formwork, while reducing the influence to environment.
(4) meet the needs of industrialized production
Mode standardization design splice plate size and protruding bar removal, may be implemented reduce plant produced mold type from
And reach millwork, intelligent production and the standardization and reusability of on-site hoisting frame, meet construction industry work
Industry metaplasia, which produces, to be needed.
(5) meet the requirement of construction industry future developing trend.
Fabricated construction is currently in initial stage, due to not solving there are also many technical problems, currently mainly across
Degree is smaller, uses in the more intensive residential housing of vertical supporting member.But with the disappearance of China human mortality bonus, building trade
Generalling use prefabricated assembled is an irreversible trend, and assembled architecture system is following inevitable to big across, heavy duty greatly
The development of type public building, then the ten big technologies that prestressing technique promotes and applies always as the Ministry of Construction first is that being suitble to the development
The indispensable technology type of trend.
A kind of large-span prestressed more piece truss bars superimposed sheets obtained according to above-mentioned construction method.
Proposed adoption external prestressing technique of the present invention, it applies external prestressing technique when can pass through in-site installation, from
And reach similar with common truss superimposed sheet production process and construction when component plant produced, meet the production of building industrialization component
The requirement of mechanization realizes that Design and Build, prestressed application construction are as shown in Figure 2-5.
Certainly, above description is also not limited to the example above, technical characteristic of the present invention without description can by or
It is realized using the prior art, details are not described herein；Above embodiments and attached drawing are only used to illustrate the technical scheme of the present invention not
It is limitation of the present invention, is described the invention in detail referring to preferred embodiment, the ordinary skill people of this field
Member is it should be appreciated that variation, remodeling, the addition that those skilled in the art are made within the essential scope of the present invention
Or replacement also should belong to claims of the invention without departure from spirit of the invention.
Claims (6)
1. a kind of construction method of large-span prestressed more piece truss bars superimposed sheets, it is characterised in that: the following steps are included:
Mode standard truss bars prefabricated panel, this bottom plate can choose suitable modular dimension batch production production；
The splicing of truss bars prefabricated panel: prefabricated panel being supported by bottom periphery supporting beam, is laid in floor beam lattice,
Bracket is set on perimeter support beam and shelves close jigsaw；
Additional bar is set above close edge joint position；
In close jigsaw presstressed reinforcing steel punch position reserving hole；
Cast-in-place overlapping board concrete；
External prestressing steels are worn, are anchored in perimeter support girder tensioning, presstressed reinforcing steel is according to the uniformly distributed arrangement of design.
2. the construction method of the large-span prestressed more piece truss bars superimposed sheets of one kind according to claim 1, special
Sign is: the mode standard truss bars prefabricated panel splices in perimeter support beam lattice, and piece quantity takes 1-4.
3. the construction method of the large-span prestressed more piece truss bars superimposed sheets of one kind according to claim 1, special
Sign is: prefabricated panel designs truss bars, with ribbing pre- for that can take compared with large span and the demanding engineering of anti-seismic performance
Bottom plate processed adds truss bars.
4. the construction method of the large-span prestressed more piece truss bars superimposed sheets of one kind according to claim 1, special
Sign is: additional bar is arranged in splicing bottom plate seam crossing；External prestressing steels position reserving hole is worn in superimposed sheet, is then poured
Build overlapping layers cast-in-place concrete.
5. the construction method of the large-span prestressed more piece truss bars superimposed sheets of one kind according to claim 1, special
Sign is: wearing external prestressing steels and anchors in perimeter support girder tensioning, presstressed reinforcing steel can be continuous according to floor beam lattice size
Arrangement uninterruptedly can continuously arrange both ends tensioning when longest floor structure is no more than 50 meters.
6. a kind of large-span prestressed more piece truss bars superimposed sheets described in any item according to claim 1~5.
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| CN201811556157.7A CN109723176A (en) | 2018-12-19 | 2018-12-19 | The large-span prestressed more piece truss bars superimposed sheets of one kind and construction method |
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| CN201811556157.7A CN109723176A (en) | 2018-12-19 | 2018-12-19 | The large-span prestressed more piece truss bars superimposed sheets of one kind and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457948A (en) * | 2020-11-10 | 2022-05-10 | 内蒙古中朵远大建筑工业有限公司 | Splicing seam structure of prefabricated bottom plate of bidirectional laminated slab and construction method of splicing seam structure |
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| CN1544773A (en) * | 2003-11-14 | 2004-11-10 | 建研科技股份有限公司 | Secondary prestress assembly integral concrete slab and construction process |
| CN2752360Y (en) * | 2004-09-23 | 2006-01-18 | 昆明理工大学 | Prefabricated floor slab with boundary beam |
| CN106639093A (en) * | 2017-01-17 | 2017-05-10 | 沈阳建筑大学 | Close splicing seam-type laminated slab |
| CN106639094A (en) * | 2017-02-21 | 2017-05-10 | 哈尔滨达城绿色建筑技术开发股份有限公司 | Assembling type post-tensioned pre-stressing steel reinforced concrete bidirectional laminated board for aggregate building |
| CN207582764U (en) * | 2017-12-04 | 2018-07-06 | 浙江大学 | A kind of close spelling laminated floor slab connecting joint structure of end fluting |
| CN208088615U (en) * | 2017-11-24 | 2018-11-13 | 中民筑友科技投资有限公司 | A kind of prefabricated board and hollow laminated floor slab |
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2018
- 2018-12-19 CN CN201811556157.7A patent/CN109723176A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544773A (en) * | 2003-11-14 | 2004-11-10 | 建研科技股份有限公司 | Secondary prestress assembly integral concrete slab and construction process |
| CN2752360Y (en) * | 2004-09-23 | 2006-01-18 | 昆明理工大学 | Prefabricated floor slab with boundary beam |
| CN106639093A (en) * | 2017-01-17 | 2017-05-10 | 沈阳建筑大学 | Close splicing seam-type laminated slab |
| CN106639094A (en) * | 2017-02-21 | 2017-05-10 | 哈尔滨达城绿色建筑技术开发股份有限公司 | Assembling type post-tensioned pre-stressing steel reinforced concrete bidirectional laminated board for aggregate building |
| CN208088615U (en) * | 2017-11-24 | 2018-11-13 | 中民筑友科技投资有限公司 | A kind of prefabricated board and hollow laminated floor slab |
| CN207582764U (en) * | 2017-12-04 | 2018-07-06 | 浙江大学 | A kind of close spelling laminated floor slab connecting joint structure of end fluting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457948A (en) * | 2020-11-10 | 2022-05-10 | 内蒙古中朵远大建筑工业有限公司 | Splicing seam structure of prefabricated bottom plate of bidirectional laminated slab and construction method of splicing seam structure |
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Application publication date: 20190507 |
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