CN109281436A - Pretensioned prestressing laminated frame is set a roof beam in place and its construction method - Google Patents
Pretensioned prestressing laminated frame is set a roof beam in place and its construction method Download PDFInfo
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- CN109281436A CN109281436A CN201811447663.2A CN201811447663A CN109281436A CN 109281436 A CN109281436 A CN 109281436A CN 201811447663 A CN201811447663 A CN 201811447663A CN 109281436 A CN109281436 A CN 109281436A
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- roof beam
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- laminated frame
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
- E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
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Abstract
A kind of pretensioned prestressing laminated frame provided by the invention is set a roof beam in place and its construction method, is related to construction engineering technical field, overlapping beam includes steel reinforcement cage, steel strand wires, antidetonation casing and precast concrete；Steel reinforcement cage is made of stirrup and beam longitudinal reinforcement；Prestress wire is located at composite beam lower part, is longitudinally arranged along composite beam, needs pre- pretensioning to fix by special equipment, the concrete that factory pours can discharge after reaching some strength from fixed equipment；Antidetonation casing is located on prestress wire and apart from composite beam beam-ends certain distance；Precast concrete pours range and is located at composite beam middle and lower part.After overlapping beam on-site hoisting is in place, composite beam lower part steel strand wires and longitudinal reinforcement extension and frame column is set to form effective connecting node by poured in place concrete.Program economy high quality is good, greatly reduces live branch modulus, improves construction efficiency, connecting node is easy for construction, and structural behaviour is suitable with cast-in-place concrete structure.
Description
Technical field
The present invention relates to construction engineering technical fields, set a roof beam in place and its apply more particularly, to a kind of pretensioned prestressing laminated frame
Work method.
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, composite frame beam goes out the more in-site installations difficulties of muscle；Large span composite frame beam is overweight, and lifting is tired
It is difficult.With continuous application and development of the fabricated construction in architectural engineering, it is impossible to meet current for traditional composite beam
Architectural engineering requirement.
Summary of the invention
It sets a roof beam in place the purpose of the present invention is to provide a kind of pretensioned prestressing laminated frame and its construction method, it is existing to solve
It is difficult that composite frame beam present in technology goes out the more in-site installations of muscle；It avoids large span composite frame beam overweight, hangs
Fill difficult technical problem.
A kind of pretensioned prestressing laminated frame provided by the invention is set a roof beam in place, 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 range and are located at the middle and lower part that laminated frame is set a roof beam in place；
Prestress wire, the prestress wire is along set a roof beam in place longitudinally disposed of laminated frame and is located at what laminated frame was set a roof beam in place
Lower part, the pre- pretensioning of the prestress wire are simultaneously fixed by fixed equipment, and the precast concrete poured in advance reaches certain
The prestress wire can be discharged from fixed equipment after intensity；
Antidetonation casing, the beam-ends that the Anti-knock casing pipe sleeve is located on the prestress wire, and sets a roof beam in place apart from laminated frame
Certain distance；
The steel reinforcement cage, the precast concrete, the prestress wire and the antidetonation casing collectively form overlapping
Frame beam；The longitudinally projecting composite frame beam in the both ends of the prestress wire, for connecting with preset frame column
It connects；
Beam upper reinforcement, the beam upper reinforcement is longitudinally disposed along the composite frame beam, in laminated frame
It is laid on after on-site hoisting of setting a roof beam in place is in place in the steel reinforcement cage；
Cast-in-place concrete, the cast-in-place concrete are located at the top that laminated frame is set a roof beam in place, for hanging at the laminated frame scene of setting a roof beam in place
Entirety is connected as by cast in situs and preset frame column and floor after dress is in place.
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, the prestress wire and the sponson of beam lower rebar pass through cast-in-place concrete and frame column
Effectively connection forms joint cores；
The beam-ends certain distance that the antidetonation casing is set a roof beam in place apart from laminated frame.
Further, several stirrup genesis analysis；
The beam construction reinforcing bar is longitudinally arranged at the middle part that laminated frame is set a roof beam in place and connect with several stirrups, for preventing
Only laminated frame, which is set a roof beam in place, laterally generates crack；
The beam lower rebar is longitudinally arranged at the lower part that laminated frame is set a roof beam in place and connect with several stirrups.
Further, the longitudinally projecting laminated frame in both ends of the beam lower rebar is set a roof beam in place, and is anchored in joint cores.
Further, the beam upper reinforcement is along the longitudinally disposed of the composite frame beam, in composite frame
Beam on-site hoisting in place after binding and fixing in the steel reinforcement cage.
Further, the antidetonation casing includes pvc pipe or steel sleeve.
The present invention also provides a kind of construction methods that laminated frame is set a roof beam in place, including the pretensioned prestressing composite frame
Beam, the method is as follows:
At least one described laminated frame is set a roof beam in place and is connect with preset frame column, and by the pre- of the composite frame beam
Prestress steel strand and beam lower rebar anchor into the frame column；
The beam upper reinforcement is run through into the frame column, is set a roof beam in place by cast-in-place concrete and laminated frame and joint cores
Effectively connection；
It is mixed by cast in situs after laminated frame sets a roof beam in place on-site hoisting in place in the top casting concrete that laminated frame is set a roof beam in place
The composite frame beam, the beam upper reinforcement and the frame column and floor are connected as entirety by solidifying soil.
Further, it adjusts the prestress wire to anchor into the frame column, to avoid the column in the frame column
Reinforcing bar.
Further, the frame column is anchored into when the beam lower rebar for choosing two composite frame beams is opposite
When, two beam lower rebars are laterally staggered and in longitudinal overlap.
Further, the beam upper reinforcement is bound along the longitudinal direction of the steel reinforcement cage and several stirrups.
Further, the frame column is prefabricated before construction or cast in situs forms.
In the above-mentioned technical solutions, the structure set a roof beam in place based on laminated frame, in installation, its laminated frame used is set a roof beam in place
The structure of the connecting node matched with frame column is better than the prior art, carries out installation by the structure of the connecting node,
It can guarantee good fixing and stability, and simplify construction procedure compared with the prior art, substantially increase construction effect
Rate.Moreover, also there is the technical effect saved consumptive material, reduce fugitive dust and building waste.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of steel reinforcement cage provided by one embodiment of the present invention；
Fig. 2 is the vertical structure schematic diagram one of steel reinforcement cage provided by one embodiment of the present invention；
Fig. 3 is that the antidetonation prestressing force laminated frame that provides of Fig. 2 is set a roof beam in place the sectional view before pouring；
Fig. 4 is that the antidetonation prestressing force laminated frame that provides of Fig. 2 is set a roof beam in place the sectional view after pouring；
Fig. 5 is the vertical structure schematic diagram two of steel reinforcement cage provided by one embodiment of the present invention；
Fig. 6 is that the antidetonation prestressed large-span laminated frame that provides of Fig. 5 is set a roof beam in place the sectional view before pouring；
Fig. 7 is that the antidetonation prestressed large-span laminated frame that provides of Fig. 5 is set a roof beam in place the sectional view after pouring；
Fig. 8 is the connecting node schematic diagram that laminated frame provided by one embodiment of the present invention is set a roof beam in place with frame column；
Fig. 9 is the position view of joint cores provided by one embodiment of the present invention.
Appended drawing reference:
1- steel reinforcement cage；2- precast concrete；3- prestress wire；
4- beam upper reinforcement；5- cast-in-place concrete；6- antidetonation casing；
7- cracking resistance reinforcing bar；8- frame column；
11- stirrup；12- beam construction reinforcing bar；13- beam lower rebar；
The joint cores 81-.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is 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 " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Figs. 1-5, a kind of pretensioned prestressing laminated frame provided in this embodiment is set a roof beam in place, 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 range and are located at the middle and lower part that laminated frame is set a roof beam in place；
Prestress wire 3, the prestress wire 3 are set a roof beam in place along set a roof beam in place longitudinally disposed of laminated frame and positioned at laminated frame
Lower part, the pre- pretensioning of the prestress wire 3 simultaneously fixed by fixed equipment, and the precast concrete 2 poured in advance reaches
The prestress wire 3 can be discharged from fixed equipment after some strength；
Antidetonation casing 6, the antidetonation casing 6 is set on the prestress wire 3, and the beam set a roof beam in place apart from laminated frame
Hold certain distance；
The steel reinforcement cage 1, the precast concrete 2, the prestress wire 3 and the antidetonation casing 6 collectively form
Composite frame beam；The longitudinally projecting composite frame beam in the both ends of the prestress wire 3 is used for and preset frame
Column 8 connects；
Beam upper reinforcement 4, the beam upper reinforcement 4 is longitudinally disposed along the composite frame beam, for overlapping
It is laid on after Vierendeel girder on-site hoisting is in place in the steel reinforcement cage 1；
Cast-in-place concrete 5, the cast-in-place concrete 5 are located at the top that laminated frame is set a roof beam in place, for setting a roof beam in place scene in laminated frame
Entirety is connected as by cast in situs and preset frame column 8 and floor after lifting is in place.
It sets a roof beam in place in the laminated frame of above-mentioned offer and belongs to girder, that is, pass through the steel reinforcement cage 1, the prestress wire 3, resist
Shake casing 6 and the precast concrete 2 collectively form composite frame beam, the composite frame beam can with pre-production,
Construction site is transported directly to after factory completes according to specification and standard to construct, and eliminates the operation such as live formwork
Step greatly improves construction efficiency.
This composite frame beam needs to construct steel reinforcement cage 1, this is also the foundation structure of composite frame beam, then
Prestress wire 3, longitudinal direction and 1 phase of steel reinforcement cage by prestress wire 3 along the steel reinforcement cage 1 are set on steel reinforcement cage 1
Collocation, the longitudinal direction of this definition namely the length direction of steel reinforcement cage 1 or the left and right directions in Fig. 2；Laminated frame is set a roof beam in place in plant produced
When, it need to be in the antidetonation casing 6 (pvc pipe or steel sleeve) for being laid with certain length apart from beam-ends certain distance position, in Anti-knock casing
The prestressing force of the range that pipe 6 is arranged, the pre- pretensioning of prestress wire 3 can not act on composite frame formed precast concrete 2
There is plastic hinge to reach the range that laminated frame under earthquake operating condition is set a roof beam in place in antidetonation casing 6, causes to overlap under earthquake operating condition in part
Vierendeel girder elder generation deformation failure improves assembling frame earthquake-resistant structure effect.
Finally prestress wire 3 and antidetonation casing 6 are poured and be fixed on steel on steel reinforcement cage 1 using concreting
In muscle cage 1, it is applied to the pre- tension stress of prestress wire 3 on precast concrete 2, makes steel reinforcement cage 1, prestress wire
3, the structure of antidetonation casing 6 and the precast concrete 2 poured forms one, constitutes the composite frame beam.And with this kind
Composite frame beam constitute laminated frame set a roof beam in place i.e. be known as antidetonation prestressing force laminated frame set a roof beam in place.
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 composite frame beam is in the production process, the prestress wire 3 is by elder generation
What the method for opening was installed, it that is to say and be laid with prestress wire 3 in the lower part of composite beam, it is pre- using prestress tensioning equipment tensioning
Prestress steel strand 3, then formwork, then in the middle and lower part casting concrete of composite beam, when concrete curing to some strength is wanted
After asking, tensioning equipment discharges prestress wire 3, and the prestressing force effect being previously applied is formed first on composite frame beam
Open method prestressing force composite frame beam.
And pass through and be laid with the composite beams of pre-tensioning system treated steel strand wires and be able to bear bigger active force, this is to laminated frame
Set a roof beam in place component carrying and stability for can greatly improve；And it can also effectively reduce the section that laminated frame is set a roof beam in place
Highly, there is the technical effect for saving material.
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 composite frame beam on composite frame beam；
6, composite frame beam is transported to construction site, lifting to corresponding position；
7, live formwork；
8, rear pouring concrete is poured, the beam prefabricated part of composite frame is made to be connected as an entirety with floor and frame column 8.
With reference to Fig. 8, based on the composite frame beam obtained after being handled by pre-tensioning system, can direct site operation, apply
Working hour can choose appropriate number of composite frame beam and is coupled, and the quantity of the composite frame beam can
Think two, three and four.In addition, setting structure of the composite frame beam on frame column 8 can be opposite
Parallel, Relative vertical.Those skilled in the art can be according to the actual situation to multiple composite frame beams and frame column 8
Between setting structure be adjusted, herein just without limitation.
Here, clearly being described in order to the mounting means to composite frame beam and frame column 8, now choose
Two composite frame beams are illustrated with the symmetrically arranged structure type of frame column 8.
When the connecting pin of two composite frame beams symmetrically to be connect with frame column 8, also i.e. by composite frame beam
Be used on component the connecting pin that is connect with frame column 8 against or be fixed on frame column 8, and by two composite frame beams pair
The two sides that frame column 8 is set claimed, and with the perpendicular setting of frame column 8, and the structure formed through the above way, it can
Referred to as laminated frame is set a roof beam in place the connecting node between frame column 8, which also includes composite frame beam with other angles
Spend the structure type connecting with frame column 8.And according to the specific requirements of work progress center sill structure, those skilled in the art may be used also
To reasonably adjust the connection angle of composite frame beam Yu frame column 8, herein just without limitation.
When connecting composite frame beam with frame column 8, need the longitudinally projecting reinforcing bar of prestress wire 3
The part of cage 1 is anchored with 8 phase of frame column and connects, and anchors into frame column 8 prestress wire 3 with this, forms jail with frame column 8
The connection leaned on.And those skilled in the art can adjust the depth being anchored according to construction requirement, herein just without limitation.
This prestress wire 3 handled by pre-tensioning system, which can move, finely tunes its position.So in connecting node
Installation process in, the position of prestress wire 3 can be adjusted according to the position of 8 inner prop reinforcing bar of frame column, and then really
Surely position is anchored into, so that prestress wire 3 is avoided the column reinforcing bar in frame column 8, all kinds of reinforcing bars is made to scatter, avoid concentrating on one
Act the case where causing local reinforcing bar overcrowding.
After the connecting node configures, the beam upper reinforcement 4 can be set a roof beam in place structure along the laminated frame
The longitudinal direction of part is connect with several stirrups 11, and the laminated frame for being located at 8 two sides of frame column is set a roof beam in place using beam upper reinforcement 4 with this
Component is connected together, and constitutes stable connection structure.Wherein, stirrup 11 can progress safely and fast by way of binding
Construction.
Preferably, in an embodiment of the present invention, the beam upper reinforcement 4 along the composite frame beam longitudinal direction with
Several 11 binding and fixing of the stirrup.So can be adopted when beam upper reinforcement 4 and composite frame beam to be attached
Be fixedly connected with the mode of binding, specific improving bud grafting can choose buckled along button method, cruciate flower button, anti-cross buckle, pocket,
Anti- cross twines button, pocket is buckled to add and be twined or hitch etc., is beneficial to better, safer in the way of binding and carries out construction behaviour
Make.
After beam upper reinforcement 4 also installs, the top casting concrete just set a roof beam in place in laminated frame, by beam upper reinforcement
4 pour and are fixed on the composite frame beam, are carried out composite frame beam, beam upper reinforcement 4 and frame column 8 with this
It is whole to pour fixation.
In above-mentioned installation mode, the laminated frame used is set a roof beam in place the knot of the connecting node matched with frame column 8
Structure is better than the prior art, carries out installation by the structure of the connecting node, it is ensured that good fixing and stability,
And construction procedure is simplified compared with the prior art, construction efficiency is substantially increased, moreover, also has and saves consumptive material, subtracts
The technical effect of few fugitive dust and building waste.
As viewed in figures 5-8, in an embodiment of the present invention, the pretensioned prestressing laminated frame is set a roof beam in place further include:
Cracking resistance reinforcing bar 7；The cracking resistance reinforcing bar 7 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 7 when laminated frame sets a roof beam in place and reaches certain span.
When composite frame beam span is larger, the prestressing force that pre-tensioning system is applied on composite frame beam is larger, laminated frame
It sets a roof beam in place pre-erection upper surface concrete in tension under prestressing force effect, cracking resistance reinforcing bar need to be set, composite frame beam is prevented
Generate crack.
The cracking resistance reinforcing bar 7 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 7 of setting, to be fixed together, and constitutes large span composite frame beam, to pass through cracking resistance reinforcing bar 7
It prevents composite frame beam part from cracking before load, while being also possible to prevent the lateral dehiscence that laminated frame is set a roof beam in place.And with
The laminated frame that the composite frame beam that this kind increases cracking resistance reinforcing bar 7 is constituted, which is set a roof beam in place, is known as antidetonation prestressed large-span overlapping
Vierendeel girder.Wherein, specification, the model etc. of the cracking resistance reinforcing bar 7, it is reasonable that those skilled in the art can carry out according to construction demand
Selection, herein just without limitation.
As shown in figure 9, in an embodiment of the present invention, the over-hang part of the prestress wire 3 and beam lower rebar 13
Divide and effectively connect to form joint cores 81 with frame column 8 by cast-in-place concrete 5；
The beam-ends certain distance that the antidetonation casing 6 is set a roof beam in place apart from laminated frame.
It sets a roof beam in place the position intersected with frame column 8 from the foregoing, it will be observed that the joint cores 81 are in laminated frame.The joint core
The position in area 81 needs to be arranged earthquake resistant construction and is reinforced.With specific reference to recording above.
With reference to Fig. 1-5, in an embodiment of the present invention, several 11 genesis analysis of stirrup；
The beam construction reinforcing bar 12 is longitudinally arranged at the middle part that laminated frame is set a roof beam in place and connect with several stirrups 11, uses
Crack is laterally generated in preventing laminated frame from setting a roof beam in place；
The beam lower rebar 13 is longitudinally arranged at the lower part that laminated frame is set a roof beam in place 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 Vierendeel girder, make beam construction reinforcing bar 12 and beam lower rebar 13 with it is several
Stirrup 11 interconnects, to constitute steel reinforcement cage 1.
Stirrup 11 can safely and fast carry out constructing by way of binding.
Preferably, the longitudinally projecting laminated frame in both ends of the beam lower rebar 13 is set a roof beam in place, and is anchored in joint cores 81.Institute
With, beam lower rebar 13 be mounted on laminated frame set a roof beam in place it is upper after, can be longitudinally projecting, be exposed to the end that laminated frame is set a roof beam in place,
It, can be by beam lower rebar and then when the composite frame beam being made of this steel reinforcement cage 1 is connected with frame column 8
13 anchor into frame column 8, form firm connection with frame column 8.
And beam lower rebar 13, when anchoring into frame column 8, the length being anchored into frame column 8 can be adjusted according to the actual situation
It is whole, for example, in order to guarantee that the stability of connection can anchor into beam lower rebar 13 it is relatively deep (those skilled in the art according to
It is required that limiting its length).Also, when encountering two composite frame beams and being symmetrical arranged, on two composite frame beams
Beam lower rebar 13 laterally staggered and in longitudinal overlap, can guarantee the intensity of connection in this way, and can be to avoid connection
The reinforcing bar overcrowding of the position of node.
The beam lower rebar 13 is symmetricly set on laminated frame sets a roof beam in place, the longitudinal direction set a roof beam in place along laminated frame and several stirrups
11 are connected with each other.
The beam construction reinforcing bar 12 can be set to two, two beam construction reinforcing bars 12 it is substantially parallel be symmetricly set on it is folded
It closes on Vierendeel girder, the longitudinal direction set a roof beam in place along laminated frame and several stirrups 11 are connected with each other.When beam section variation, art technology
Personnel can also be adjusted the radical of beam construction reinforcing bar 12 according to the size of beam section, herein just without limitation.
When construction, beam lower rebar 13 can be arranged in the lower position that laminated frame is set a roof beam in place, and by beam construction reinforcing bar 12
The medium position that laminated frame is set a roof beam in place is set, positioned at the top of two beam lower rebars 13.In addition, those skilled in the art can be with
According to construction demand, reasonable radical, specific location and the connection type for adjusting beam construction reinforcing bar 12 and beam lower rebar 13,
This is just without limitation.
Further, in an embodiment of the present invention, the antidetonation casing 6 includes pvc pipe or steel sleeve.So in order to
Anti seismic efficiency is improved, pvc pipe can be chosen or steel sleeve is set on prestress wire 3, and apart from the joint cores 81
Certain distance.
Those skilled in the art can also select according to demand other kinds of pipe as antidetonation casing 6, just not do herein
It limits.
As shown in figure 8, being answered in advance the present invention also provides a kind of construction method that laminated frame is set a roof beam in place including the pre-tensioning system
Power laminated frame is set a roof beam in place, the method is as follows:
At least one described laminated frame is set a roof beam in place and is connect with preset frame column 8, and by the composite frame beam
Prestress wire 3 and beam lower rebar 13 anchor into the frame column 8；
The beam upper reinforcement 4 is run through into the frame column 8, is set a roof beam in place and node core by cast-in-place concrete 5 and laminated frame
Heart district 81 effectively connects；
It is mixed by cast in situs after laminated frame sets a roof beam in place on-site hoisting in place in the top casting concrete that laminated frame is set a roof beam in place
The composite frame beam, the beam upper reinforcement 4 and the frame column 8 and floor are connected as entirety by solidifying soil.
Specifically, can directly choose the good composite frame of pre-production when construction according to above-mentioned construction method
Beam, since specific structure, the principle of work and power and the technical effect of the composite frame beam are in detailed hereinbefore, herein
Just it repeats no more.Any technology contents about the composite frame beam, also can refer to above for the overlapping
The record of frame beam.
And based on the composite frame beam obtained after being handled previously by pre-tensioning system, it can direct site operation.Construction
When, appropriate number of composite frame beam can be chosen and be coupled, the quantity of the composite frame beam can be with
It is two, three and four.In addition, setting structure of the composite frame beam on frame column 8 can be relatively flat
Capable, Relative vertical.Those skilled in the art can according to the actual situation to multiple composite frame beams and frame column 8 it
Between setting structure be adjusted, herein just without limitation.
Here, clearly being described in order to the mounting means to composite frame beam and frame column 8, now choose
Two composite frame beams are illustrated with the symmetrically arranged structure type of frame column 8.
When the connecting pin of two composite frame beams is symmetrically connect with frame column 8, also i.e. by composite frame beam structure
Be used on part the connecting pin that is connect with frame column 8 against or be fixed on frame column 8, and it is two composite frame beams are symmetrical
The two sides that frame column 8 is set, and with the perpendicular setting of frame column 8, and the structure formed through the above way, it can claim
Set a roof beam in place the connecting node between frame column 8 for laminated frame, the connecting node also include composite frame beam at other angles
The structure type being connect with frame column 8.
When connecting composite frame beam with frame column 8, need the longitudinally projecting overlapping of prestress wire 3
Even the part of component is anchored with 8 phase of frame column and connects, and is anchored into prestress wire 3 in frame column 8 with this, with 8 shape of frame column
At firm connection.And those skilled in the art can adjust the depth being anchored according to construction requirement, herein just without limitation.
After the connecting node configures, the beam upper reinforcement 4 can be set a roof beam in place structure along the laminated frame
The longitudinal direction of part is connect with several stirrups 11, and the laminated frame for being located at 8 two sides of frame column is set a roof beam in place using beam upper reinforcement 4 with this
Component is connected together, and constitutes stable connection structure.
Preferably, in an embodiment of the present invention, the beam upper reinforcement 4 along the composite frame beam longitudinal direction with
Several 11 binding and fixing of the stirrup.So can be adopted when beam upper reinforcement 4 and composite frame beam to be attached
Be fixedly connected with the mode of binding, specific improving bud grafting can choose buckled along button method, cruciate flower button, anti-cross buckle, pocket,
Anti- cross twines button, pocket is buckled to add and be twined or hitch etc., is beneficial to better, safer in the way of binding and carries out construction behaviour
Make.
After beam upper reinforcement 4 also installs, the top casting concrete just set a roof beam in place in laminated frame, by beam upper reinforcement
4 pour and are fixed on the composite frame beam, are carried out composite frame beam, beam upper reinforcement 4 and frame column 8 with this
It is whole to pour fixation.
In above-mentioned installation mode, the laminated frame used is set a roof beam in place the knot of the connecting node matched with frame column 8
Structure is better than the prior art, carries out installation by the structure of the connecting node, it is ensured that good fixing and stability,
And construction procedure is simplified compared with the prior art, construction efficiency is substantially increased, moreover, also has and saves consumptive material, subtracts
The technical effect of few fugitive dust and building waste.
Further, in an embodiment of the present invention, the prestress wire 3 is adjusted to anchor into the frame column 8, with
Avoid the column reinforcing bar in the frame column 8.
Due in composite frame beam there are a large amount of reinforcing bar or steel strand wires etc. to constitute, also there is column steel in frame column 8
Muscle, so can be easy to happen various reinforcing bars when being assembled to composite frame beam and frame column 8 and concentrate, cause
The problem of reinforcing bar overcrowding.
Firstly, this prestress wire 3 handled by pre-tensioning system can move and finely tune its position.So applying
The position of prestress wire 3 can be adjusted during work according to the position of 8 inner prop reinforcing bar of frame column, and then determines anchor
Enter position, so that prestress wire 3 is avoided the column reinforcing bar in frame column 8, all kinds of reinforcing bars is made to scatter, avoids concentrating in together and make
The case where at local reinforcing bar overcrowding.
In a specific embodiment, when the opposite anchor of the beam lower rebar 13 for choosing two composite frame beams
When entering the frame column 8, two beam lower rebars 13 are laterally staggered and in longitudinal overlap.
With reference to the embodiment that two composite frame beams of listed earlier are connect with frame column 8, symmetrical beam lower part steel
Muscle 13 anchors into deeper in the longitudinal direction, just can obtain better fixing, and when the depth anchored into, it can be by adjusting under beam
The position of portion's reinforcing bar 13 makes opposite beam lower rebar 13 horizontally staggeredly be dispersed out, is distributed active force uniformly
At connecting node.
Further, in an embodiment of the present invention, if by the beam upper reinforcement 4 along the steel reinforcement cage 1 longitudinal direction with
The stirrup 11 is done to bind.Pass through the binding between beam upper reinforcement 4 and several stirrups 11, it can quickly, firmly to beam
Upper reinforcement 4 and stirrup 11 are attached, to constitute steel reinforcement cage 1.
Further, in an embodiment of the present invention, the frame column 8 is prefabricated before construction or cast in situs forms.
So carry out frame column 8 and laminated frame set a roof beam in place be coupled when, frame column 8 can choose it is prefabricated in advance, by hanging
The mode of dress is installed at the construction field (site)；Can also be according to condition of construction and site operation pours, those skilled in the art can
Rationally to be determined according to condition of construction, just repeat no more herein.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (12)
1. a kind of pretensioned prestressing laminated frame is set a roof beam in place 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 range and are located at the middle and lower part that laminated frame is set a roof beam in place；
Prestress wire (3), the prestress wire (3) are set a roof beam in place along set a roof beam in place longitudinally disposed of laminated frame and positioned at laminated frame
Lower part, the pre- pretensioning of the prestress wire (3) simultaneously fixed, the precast concrete (2) poured in advance by fixed equipment
The prestress wire (3) can be discharged from fixed equipment after reaching some strength；
Antidetonation casing (6), the antidetonation casing (6) are set on the prestress wire (3), and set a roof beam in place apart from laminated frame
Beam-ends certain distance；
The steel reinforcement cage (1), the precast concrete (2), the prestress wire (3) and the antidetonation casing (6) are common
Constitute composite frame beam；The longitudinally projecting composite frame beam in both ends of the prestress wire (3) is used for and presets
Frame column (8) connection；
Beam upper reinforcement (4), the beam upper reinforcement (4) is along the longitudinally disposed of the composite frame beam, for overlapping
It is laid on after Vierendeel girder on-site hoisting is in place in the steel reinforcement cage (1)；
Cast-in-place concrete (5), the cast-in-place concrete (5) are located at the top that laminated frame is set a roof beam in place, for setting a roof beam in place scene in laminated frame
Entirety is connected as by cast in situs and preset frame column (8) and floor after lifting is in place.
2. pretensioned prestressing laminated frame according to claim 1 is set a roof beam in place, which is characterized in that further include:
Cracking resistance reinforcing bar (7)；
The cracking resistance reinforcing bar (7) pours fixation along the longitudinally disposed of the steel reinforcement cage (1), and by the precast concrete (2).
3. pretensioned prestressing laminated frame according to claim 1 or 2 is set a roof beam in place, which is characterized in that the prestress steel twist
Line (3) and the sponson of beam lower rebar (13) effectively connect to form node core by cast-in-place concrete (5) with frame column (8)
Heart district (81)；
The beam-ends certain distance that the antidetonation casing (6) is set a roof beam in place apart from laminated frame.
4. pretensioned prestressing laminated frame according to claim 3 is set a roof beam in place, 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 that laminated frame is set a roof beam in place and connect with several stirrups (11), uses
Crack is laterally generated in preventing laminated frame from setting a roof beam in place；
The beam lower rebar (13) is longitudinally arranged at the lower part that laminated frame is set a roof beam in place and connect with several stirrups (11).
5. pretensioned prestressing laminated frame according to claim 4 is set a roof beam in place, which is characterized in that the beam lower rebar (13)
The longitudinally projecting laminated frame in both ends set a roof beam in place, be anchored in joint cores (81).
6. pretensioned prestressing laminated frame according to claim 1 or 2 is set a roof beam in place, which is characterized in that the beam upper reinforcement
(4) along the longitudinally disposed of the composite frame beam, for after laminated frame sets a roof beam in place on-site hoisting in place binding and fixing in institute
It states in steel reinforcement cage (1).
7. pretensioned prestressing laminated frame according to claim 1 or 2 is set a roof beam in place, which is characterized in that the antidetonation casing (6)
Including pvc pipe or steel sleeve.
8. a kind of construction method that laminated frame is set a roof beam in place, which is characterized in that first opened including such as of any of claims 1-7
Method prestressing force laminated frame is set a roof beam in place, the method is as follows:
At least one described laminated frame is set a roof beam in place and is connect with preset frame column (8), and by the pre- of the composite frame beam
Prestress steel strand (3) and beam lower rebar (13) anchor into the frame column (8)；
The beam upper reinforcement (4) is run through into the frame column (8), is set a roof beam in place by cast-in-place concrete (5) and laminated frame and node
Core space (81) effectively connects；
In the top casting concrete that laminated frame is set a roof beam in place, laminated frame set a roof beam in place on-site hoisting it is in place after pass through poured in place concrete
The composite frame beam, the beam upper reinforcement (4) and the frame column (8) and floor are connected as entirety.
9. construction method according to claim 8, which is characterized in that adjust the prestress wire (3) anchor into it is described
In frame column (8), to avoid the column reinforcing bar in the frame column (8).
10. the construction method according to any one of claim 8 or 9, which is characterized in that when two laminated frames of selection
Set a roof beam in place component beam lower rebar (13) it is opposite when anchoring into the frame column (8), two beam lower rebars (13) are in transverse direction
Staggeredly and in longitudinal overlap.
11. the construction method according to any one of claim 8 or 9, which is characterized in that by the beam upper reinforcement (4)
It is bound along the longitudinal direction of the steel reinforcement cage (1) and several stirrups (11).
12. the construction method according to any one of claim 8 or 9, which is characterized in that the frame column (8) is being constructed
Preceding prefabricated or cast in situs molding.
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| CN201811447663.2A CN109281436A (en) | 2018-11-29 | 2018-11-29 | Pretensioned prestressing laminated frame is set a roof beam in place and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447663.2A CN109281436A (en) | 2018-11-29 | 2018-11-29 | Pretensioned prestressing laminated frame is set a roof beam in place and its construction method |
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| CN110499869A (en) * | 2019-09-17 | 2019-11-26 | 三一筑工科技有限公司 | Bracket composite beam and its construction method |
| CN110512800A (en) * | 2019-09-03 | 2019-11-29 | 宁波优造建筑科技有限公司 | A kind of steel and concrete combined structure system and construction method |
| CN110528687A (en) * | 2019-07-24 | 2019-12-03 | 三一筑工科技有限公司 | A kind of assembling frame building structure and building body |
| CN111851832A (en) * | 2020-05-21 | 2020-10-30 | 江苏永坤建设有限公司 | Tensioning end node structure of laminated T-beam wing plate under assembled building plate and construction method |
| CN111851831A (en) * | 2020-05-21 | 2020-10-30 | 江苏永坤建设有限公司 | Unbonded prestressed node structure for superposed T-beam under assembled building plate and construction method |
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| CN114687512A (en) * | 2022-04-20 | 2022-07-01 | 池州建投鼎晟预制构件有限公司 | Prestressed concrete beam and method for prefabricating prestressed concrete beam |
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