CN209670188U - Pretensioned prestressing composite beam - Google Patents
Pretensioned prestressing composite beam Download PDFInfo
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- CN209670188U CN209670188U CN201821990428.5U CN201821990428U CN209670188U CN 209670188 U CN209670188 U CN 209670188U CN 201821990428 U CN201821990428 U CN 201821990428U CN 209670188 U CN209670188 U CN 209670188U
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- composite beam
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- reinforcement cage
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Abstract
A kind of pretensioned prestressing composite beam provided by the utility model, is related to construction engineering technical field, comprising: steel reinforcement cage is made of stirrup, beam construction reinforcing bar and beam lower rebar；Precast concrete pours the middle and lower part that range is located at composite beam；Prestress wire along the longitudinally disposed of composite beam and positioned at the lower part of composite beam, simultaneously fixed by fixed equipment by the pre- pretensioning of prestress wire, and the precast concrete poured in advance can discharge prestress wire from fixed equipment after reaching some strength；Beam upper reinforcement is longitudinally disposed along overlapping beam；Cast-in-place concrete is located at the top of composite beam and wraps up beam upper reinforcement.The program can guarantee good fixing and stability, simplify construction procedure, substantially increase construction efficiency, moreover, also have the technical effect saved consumptive material, reduce fugitive dust and building waste.
Description
Technical field
The utility model relates to construction engineering technical fields, more particularly, to a kind of pretensioned prestressing composite beam.
Background technique
The effectively save resource of assembly concrete frame structure energy and the energy, and material can be improved in building energy conservation and knot
The efficiency of structure aspect of performance reduces building waste and the adverse effect to environment, meets building industrialization, housing industrialization and green
The requirement of color building.In fabricated construction, assembly concrete frame structure is applicable to office building, school, hospital etc.
In volumed space building, belong to a kind of structure type most widely used in architectural engineering.
Currently, overlapping beam goes out the more in-site installations difficulties of muscle；Large span overlapping beam is overweight, and lifting is difficult.With
Continuous application and development of the fabricated construction in architectural engineering, it is impossible to meet current building works for traditional composite beam
Range request.
Utility model content
It is existing in the prior art to solve the purpose of this utility model is to provide a kind of pretensioned prestressing composite beam
It is difficult that overlapping beam goes out the more in-site installations of muscle；It avoids large span overlapping beam overweight, lifts difficult technical problem.
A kind of pretensioned prestressing composite beam provided by the utility model, comprising:
Steel reinforcement cage, the steel reinforcement cage are made of stirrup, beam construction reinforcing bar and beam lower rebar；
Precast concrete, the precast concrete pour the middle and lower part that range is located at composite beam；
Prestress wire, the prestress wire is along the longitudinally disposed of composite beam and positioned at the lower part of composite beam, institute
It states the pre- pretensioning of prestress wire and is fixed by fixed equipment, the precast concrete poured in advance can after reaching some strength
The prestress wire is discharged from fixed equipment；
The steel reinforcement cage, the precast concrete and the prestress wire collectively form overlapping beam；
Beam upper reinforcement, the beam upper reinforcement is longitudinally disposed along the overlapping beam, at composite beam scene
It is laid in the steel reinforcement cage after lifting is in place；
Cast-in-place concrete, the cast-in-place concrete are located at the top of composite beam and wrap up the beam upper reinforcement.
Further, further includes:
Cracking resistance reinforcing bar；
The cracking resistance reinforcing bar pours fixation along the longitudinally disposed of the steel reinforcement cage, and by the precast concrete.
Further, several stirrup genesis analysis；
The beam construction reinforcing bar is longitudinally arranged at the middle part of composite beam and connect with several stirrups, folds for preventing
It closes beam and laterally generates crack；
The beam lower rebar is longitudinally arranged at the lower part of composite beam and connect with several stirrups.
Further, the beam construction reinforcing bar is connected with several stirrup bindings.
Further, the beam lower rebar is connected with several stirrup bindings.
Further, the beam upper reinforcement is along the longitudinally disposed of the overlapping beam, for hanging at composite beam scene
Binding and fixing are in the steel reinforcement cage after dress is in place.
In the above-mentioned technical solutions, based on the structure of composite beam, can guarantee in installation good fixing and
Stability, and construction procedure is simplified compared with the prior art, substantially increase construction efficiency.Moreover, also have and save
Consumptive material, the technical effect for reducing fugitive dust and building waste.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the steel reinforcement cage that the utility model one embodiment provides；
Fig. 2 is the vertical structure schematic diagram one for the steel reinforcement cage that the utility model one embodiment provides；
Fig. 3 is the sectional view before the non-antidetonation prestressing force composite beam that Fig. 2 is provided pours；
Fig. 4 is the sectional view after the non-antidetonation prestressing force composite beam that Fig. 2 is provided pours；
Fig. 5 is the vertical structure schematic diagram two for the steel reinforcement cage that the utility model one embodiment provides；
Fig. 6 is the sectional view before the non-antidetonation prestressed large-span composite beam that Fig. 5 is provided pours；
Fig. 7 is the sectional view after the non-antidetonation prestressed large-span composite beam that Fig. 5 is provided pours.
Appended drawing reference:
1- steel reinforcement cage；2- precast concrete；3- prestress wire；
4- beam upper reinforcement；5- cast-in-place concrete；6- cracking resistance reinforcing bar；
11- stirrup；12- beam construction reinforcing bar；13- beam lower rebar.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
As shown in Figs 1-4, a kind of pretensioned prestressing composite beam provided in this embodiment, comprising:
Steel reinforcement cage 1, the steel reinforcement cage 1 are made of stirrup 11, beam construction reinforcing bar 12 and beam lower rebar 13；
Precast concrete 2, the precast concrete 2 pour the middle and lower part that range is located at composite beam；
Prestress wire 3, the prestress wire 3 along the longitudinally disposed of composite beam and be located at composite beam lower part,
The pre- pretensioning of the prestress wire 3 is simultaneously fixed by fixed equipment, and the precast concrete 2 poured in advance reaches some strength
After can by the prestress wire 3 from fixed equipment discharge；
The steel reinforcement cage 1, the precast concrete 2 and the prestress wire 3 collectively form overlapping beam；It is described
The longitudinally projecting overlapping beam in the both ends of prestress wire 3；
Beam upper reinforcement 4, the beam upper reinforcement 4 is longitudinally disposed along the overlapping beam, for existing in composite beam
It is laid in the steel reinforcement cage 1 after field lifting is in place；
Cast-in-place concrete 5, the cast-in-place concrete 5 are located at the top of composite beam and wrap up the beam upper reinforcement 4.
Belong to secondary beam in the composite beam of above-mentioned offer, is to be assembled for cooperating with girder, which employs assembled coagulations
Soil structure collectively forms composite beam structure by the steel reinforcement cage 1, the prestress wire 3 and the precast concrete 2
Part, the overlapping beam can transport directly to construction site after factory completes according to specification and standard with pre-production
It constructs, eliminates the operating procedures such as live formwork, greatly improve construction efficiency.
This overlapping beam needs to construct steel reinforcement cage 1, this is also the foundation structure for overlapping beam, then in steel reinforcement cage
Prestress wire 3 is set on 1, prestress wire 3 is arranged in pairs or groups along the longitudinal direction of the steel reinforcement cage 1 with 1 phase of steel reinforcement cage, this is fixed
The longitudinal direction of justice namely the length direction of steel reinforcement cage 1 or the left and right directions in Fig. 3.
Then in composite beam middle and lower part, factory pours precast concrete 2, and the pre- tension stress of prestress wire 3 is applied to
On precast concrete 2, the structure of steel reinforcement cage 1, prestress wire 3 and the precast concrete 2 poured is made to form one, constitutes institute
State overlapping beam.And non-antidetonation prestressing force composite beam is known as with the composite beam that this kind overlapping beam is constituted.
In Specific construction, the prestress wire 3 can preferably use two, by two prestress wires 3
Substantially symmetric setting is in the steel reinforcement cage 1, all along the substantially longitudinal parallel setting of steel reinforcement cage 1, and by prestress steel
The lower part of steel reinforcement cage 1 is arranged in twisted wire 3.And those skilled in the art can also be according to actual construction demand, to prestress steel
The radical of twisted wire 3 and specific position are adjusted, herein just without limitation.
It should be noted that above-mentioned overlapping beam is in the production process, the prestress wire 3 is by pre-tensioning system
It is installed, that is to say and be laid with prestress wire 3 in the lower part of composite beam, using prestress tensioning equipment stretch-draw prestressing force
Steel strand wires 3, then formwork, the then middle and lower part casting concrete of composite beam, after concrete curing to some strength requires,
Equipment is drawn to discharge prestress wire 3, it is folded to form pretensioned prestressing on overlapping beam for the prestressing force effect being previously applied
Close beam.
And the composite beam for passing through setting pre-tensioning system treated steel strand wires is able to bear bigger active force, this is to composite beam
It can be greatly improved for the carrying and stability of component；And it can also effectively reduce the depth of section of composite beam, have
There is the technical effect for saving material.
Based on obtained overlapping beam after being handled by pre-tensioning system, can direct site operation, above-mentioned is this non-anti-
Shake prestressing force composite beam belongs to secondary beam, applies man-hour requirement and girder carries out cooperation assembly.The secondary beam is used to that preset master is arranged in
The top of beam mainly plays a part of to transmit load.It, can be in the junction of girder and secondary beam by secondary beam assembly when on girder
The support for girder being regarded as secondary beam carries out assembly connection, those skilled in the art by the way of anchoring between secondary beam and girder
Member can according to actual needs select anchorage point, anchor structure, just repeat no more herein.
Preferably, in the embodiments of the present invention, the beam upper reinforcement 4 is set along the longitudinal direction of the overlapping beam
Set, for composite beam on-site hoisting in place after binding and fixing in the steel reinforcement cage 1.So by beam upper reinforcement 4 and folded
The steel reinforcement cage 1 of beam is closed when being attached, it can be using being fixedly connected by the way of binding, specific improving bud grafting can be with
Select to buckle along button method, cruciate flower button, anti-cross buckle, pocket, anti-cross twine buckle, pocket is buckled to add and be twined or hitch etc., utilize the side of binding
Formula is beneficial to better, safer carry out constructing operation.
After beam upper reinforcement 4 installs, just in the top casting concrete of composite beam, beam upper reinforcement 4 is poured
It is fixed on the overlapping beam, beam and the girder that is coupled and floor will be overlapped with this and carry out whole pouring fixation.
It can specifically construct as steps described below, which belongs to a kind of specific embodiment, does not limit the application
The protection scope of technical solution.
1, stirrup 11 and beam construction reinforcing bar 12 and the binding of beam lower rebar 13 form steel reinforcement cage 1；
2, factory's die station is laid with steel reinforcement cage 1；
3, it is laid with prestress wire 3 in predeterminated position, using prestress tensioning equipment stretch-draw prestressing force steel strand wires 3；
4, formwork；
5, factory's casting concrete, after concrete curing to some strength requires, tensioning equipment discharges prestress wire
3, the prestressing force effect being previously applied forms pretensioned prestressing and overlaps beam on overlapping beam；
6, composite beam component conveying is lifted to construction site to corresponding position；
7, live formwork；
8, rear pouring concrete is poured, composite beam and floor and main beam in frame is made to be connected as an entirety.
In above-mentioned installation mode, it is ensured that good fixing and stability, and it is simple compared with the prior art
Construction procedure is changed, has substantially increased construction efficiency, moreover, has also had and save consumptive material, reduction fugitive dust and building waste
Technical effect.
As illustrated in figs. 5-7, in the embodiments of the present invention, the composite beam further include:
Cracking resistance reinforcing bar 6；The cracking resistance reinforcing bar 6 is longitudinally disposed along the steel reinforcement cage 1, and passes through the precast concrete 2
Pour fixation.That is, beam construction reinforcing bar 12 need to replace with cracking resistance reinforcing bar 6 when composite beam reaches consistent span.
When overlapping beam span is larger, the prestressing force that pre-tensioning system is applied on overlapping beam is larger, composite beam pre-erection
Upper surface concrete in tension under prestressing force effect, need to be arranged cracking resistance reinforcing bar 6, prevent overlapping beam from generating crack.
The cracking resistance reinforcing bar 6 can be fixed with steel reinforcement cage 1, such as longitudinally connected on several stirrups 11, and utilize mixed
Solidifying soil, which pours the cracking resistance reinforcing bar 6 of setting, to be fixed together, and constitutes large span and overlaps beam, to be prevented by cracking resistance reinforcing bar 6
Only composite beam prefabricated components part is cracked before load, while being also possible to prevent the lateral dehiscence of composite beam.And with this kind increase
The composite beam that the overlapping beam of cracking resistance reinforcing bar 6 is constituted is known as antidetonation prestressed large-span composite beam.Wherein, the cracking resistance
Specification, model of reinforcing bar 6 etc., those skilled in the art can reasonably select according to construction demand, herein just without limitation.
With reference to Fig. 1-3, in the embodiments of the present invention, several 11 genesis analysis of stirrup；
The beam construction reinforcing bar 12 is longitudinally arranged at the middle part of composite beam and connect with several stirrups 11, for preventing
Only composite beam laterally generates crack；
The beam lower rebar 13 is longitudinally arranged at the lower part of composite beam and connect with several stirrups 11.
In this embodiment, the beam construction steel that several cooperations of stirrups 11 are connected with several stirrups 11 can be used in steel reinforcement cage 1
Muscle 12 and beam lower rebar 13 are combined and are constituted.
Specifically, can by several stirrups 11 with substantially parallel arrangement along being longitudinally arranged, then in the overlapping
The longitudinally disposed beam construction reinforcing bar 12 and beam lower rebar 13 of beam make beam construction reinforcing bar 12 and beam lower rebar 13 and several stirrups
11 interconnect, to constitute steel reinforcement cage 1.
Stirrup 11 can safely and fast carry out constructing by way of binding.
The beam lower rebar 13 is substantially parallel to be symmetricly set on composite beam, along composite beam longitudinal direction with it is several
Stirrup 11 is connected with each other.
The beam construction reinforcing bar 12 can be set to two, and two beam construction reinforcing bars 12 are substantially parallel to be symmetricly set on
On composite beam, it is connected with each other along the longitudinal direction of composite beam and several stirrups 11.When beam section variation, those skilled in the art are also
The radical of beam construction reinforcing bar 12 can be adjusted according to the size of beam section, herein just without limitation.
When construction, two beam lower rebars 13 can be arranged in the lower position of composite beam, and by beam construction reinforcing bar 12
The medium position of composite beam is set, positioned at the top of two beam lower rebars 13.In addition, those skilled in the art can basis
Construction demand, reasonable radical, specific location and the connection type for adjusting beam construction reinforcing bar 12 and beam lower rebar 13, herein just
Without limitation.
Preferably, in the embodiments of the present invention, the beam construction reinforcing bar 12 binds phase with several stirrups 11
Even；With or, the beam lower rebar 13 is connected with several stirrups 11 bindings.It can be safely and fast by way of binding
Carry out construct.
Those skilled in the art can also select other kinds of pipe conduct according to demand, herein just without limitation.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (6)
1. a kind of pretensioned prestressing composite beam characterized by comprising
Steel reinforcement cage (1), the steel reinforcement cage (1) are made of stirrup (11), beam construction reinforcing bar (12) and beam lower rebar (13)；
Precast concrete (2), the precast concrete (2) pour the middle and lower part that range is located at composite beam；
Prestress wire (3), the prestress wire (3) along the longitudinally disposed of composite beam and be located at composite beam lower part,
The pre- pretensioning of the prestress wire (3) is simultaneously fixed by fixed equipment, and the precast concrete (2) poured in advance reaches certain
The prestress wire (3) can be discharged from fixed equipment after intensity；
The steel reinforcement cage (1), the precast concrete (2) and the prestress wire (3) collectively form overlapping beam；Institute
State the longitudinally projecting overlapping beam in both ends of prestress wire (3)；
Beam upper reinforcement (4), the beam upper reinforcement (4) is longitudinally disposed along the overlapping beam, for existing in composite beam
It is laid in the steel reinforcement cage (1) after field lifting is in place；
Cast-in-place concrete (5), the cast-in-place concrete (5) are located at the top of composite beam and wrap up the beam upper reinforcement (4).
2. pretensioned prestressing composite beam according to claim 1, which is characterized in that further include:
Cracking resistance reinforcing bar (6)；
The cracking resistance reinforcing bar (6) pours fixation along the longitudinally disposed of the steel reinforcement cage (1), and by the precast concrete (2).
3. pretensioned prestressing composite beam according to claim 1 or 2, which is characterized in that several stirrups (11) are vertical
To distribution；
The beam construction reinforcing bar (12) is longitudinally arranged at the middle part of composite beam and connect with several stirrups (11), for preventing
Only composite beam laterally generates crack；
The beam lower rebar (13) is longitudinally arranged at the lower part of composite beam and connect with several stirrups (11).
4. pretensioned prestressing composite beam according to claim 3, which is characterized in that the beam construction reinforcing bar (12) if with
The stirrup (11) binding is done to be connected.
5. pretensioned prestressing composite beam according to claim 3, which is characterized in that the beam lower rebar (13) if with
The stirrup (11) binding is done to be connected.
6. pretensioned prestressing composite beam according to claim 1 or 2, which is characterized in that beam upper reinforcement (4) edge
It is described to overlap the longitudinally disposed of beam, in composite beam on-site hoisting, rear binding and fixing to be interior in the steel reinforcement cage (1) in place.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821990428.5U CN209670188U (en) | 2018-11-29 | 2018-11-29 | Pretensioned prestressing composite beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821990428.5U CN209670188U (en) | 2018-11-29 | 2018-11-29 | Pretensioned prestressing composite beam |
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| CN209670188U true CN209670188U (en) | 2019-11-22 |
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| CN201821990428.5U Active CN209670188U (en) | 2018-11-29 | 2018-11-29 | Pretensioned prestressing composite beam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965686A (en) * | 2019-12-21 | 2020-04-07 | 济南大学 | Pre-tensioning method prestressed bidirectional superposed plate type concrete combined prefabricated part |
| CN111027128A (en) * | 2019-12-27 | 2020-04-17 | 三一筑工科技有限公司 | Method and device for determining parameters of end head of laminated beam and computing equipment |
| CN112360059A (en) * | 2020-11-12 | 2021-02-12 | 东南大学 | Pre-tensioned pre-stressed composite beam adopting FRP (fiber reinforced plastic) combined ribs and construction method thereof |
| CN113199624A (en) * | 2021-05-18 | 2021-08-03 | 上海市城市建设设计研究总院（集团）有限公司 | Precast beam web plate structure suitable for intelligent construction and construction method |
| CN115370068A (en) * | 2022-09-27 | 2022-11-22 | 三峡大学 | Pre-tensioning-method-adopted prestressed BFRP rib T-shaped superposed beam and design method thereof |
-
2018
- 2018-11-29 CN CN201821990428.5U patent/CN209670188U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965686A (en) * | 2019-12-21 | 2020-04-07 | 济南大学 | Pre-tensioning method prestressed bidirectional superposed plate type concrete combined prefabricated part |
| CN111027128A (en) * | 2019-12-27 | 2020-04-17 | 三一筑工科技有限公司 | Method and device for determining parameters of end head of laminated beam and computing equipment |
| CN112360059A (en) * | 2020-11-12 | 2021-02-12 | 东南大学 | Pre-tensioned pre-stressed composite beam adopting FRP (fiber reinforced plastic) combined ribs and construction method thereof |
| CN113199624A (en) * | 2021-05-18 | 2021-08-03 | 上海市城市建设设计研究总院（集团）有限公司 | Precast beam web plate structure suitable for intelligent construction and construction method |
| CN113199624B (en) * | 2021-05-18 | 2022-08-30 | 上海市城市建设设计研究总院（集团）有限公司 | Precast beam web plate structure suitable for intelligent construction and construction method |
| CN115370068A (en) * | 2022-09-27 | 2022-11-22 | 三峡大学 | Pre-tensioning-method-adopted prestressed BFRP rib T-shaped superposed beam and design method thereof |
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Address after: 102200 1st floor, building 6, No.8 Beiqing Road, Huilongguan town, Changping District, Beijing Patentee after: Sany Construction Technology Co.,Ltd. Address before: 410000 Sany industrial city, Sany Road, Changsha Economic and Technological Development Zone, Hunan Province Patentee before: SANY CONSTRUCTION TECHNOLOGY Co.,Ltd. |