CN207121992U - A kind of assembled Special-Shaped Column concrete frame structure - Google Patents
A kind of assembled Special-Shaped Column concrete frame structure Download PDFInfo
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- CN207121992U CN207121992U CN201720818895.9U CN201720818895U CN207121992U CN 207121992 U CN207121992 U CN 207121992U CN 201720818895 U CN201720818895 U CN 201720818895U CN 207121992 U CN207121992 U CN 207121992U
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Abstract
A kind of assembled Special-Shaped Column concrete frame structure, including prefabricated Special-Shaped Column and precast beam, the precast beam includes precast main beam and prefabricated secondary beam, the prefabricated Special-Shaped Column is divided into prefabricated upper prop and prefabricated lower prop in the node region, the lower surface of the prefabricated upper prop on the upper surface of the prefabricated lower prop with being respectively equipped with pre-buried junction steel plate, pre-buried junction steel plate on the prefabricated upper prop welds with the pre-buried junction steel plate on prefabricated lower prop at node region, simultaneously, vertical applied force reinforcing bar welds and indirectly continuous by pre-buried junction steel plate at the node region with pre-buried junction steel plate in the post of configuration in the prefabricated post；The prefabricated lower prop is prefabricated with the first stealthy bracket in the one end being connected with precast main beam；The precast main beam is prefabricated with the second stealthy bracket in the side being connected with prefabricated secondary beam.The utility model provides the assembled Special-Shaped Column concrete frame structure that a kind of simplicity is reliable, free from environmental pollution.
Description
Technical field
Assembled architecture technical field is the utility model is related to, more particularly, to a kind of assembled Special-Shaped Column concrete frame
Structure.
Background technology
Special-Shaped Column concrete frame structure building is the concrete structural system of China's original creation, in China urban residential building
In be widely adopted.Industrialized building at home and abroad progressively substitutes extensive field fabrication building, prefabricated using batch production, is building
Workshop assembling is built, is the direction of construction industry development, it has also become the national strategy of Building Trade in China development is carried out energetically.At present
The primary structure form of industrialized building is assembled monolithic concrete structure, and the industrialization of Special-Shaped Column concrete frame structure is built
A still blank is made, Framed Structure with Special-Shaped Columns is converted into assembled special-shaped column structure, to popularizing building industrialization tool in an all-round way
Play the role of important.
Existing assembled integral concrete frame structure system is mainly prefabricated in the factory beam, harden structure, also there is part knot
Structure post, cast on-site composite beam, the top half of superimposed sheet and beam, Column border node or part overall structure post, these positions
Cast-in-place concrete primarily to ensure the globality of coagulation body structure, realize the overall structure type of assembling.Due to also having
1/3 tiled configuration amount of concrete is poured into a mould at the construction field (site), therefore also referred to as wet type assembled integral concrete frame structure system.This
On-site concrete construction volume can be greatly reduced in kind wet type assembled monolithic concrete structure, but to retain a whole set of scene
The technique for pouring into a mould concrete, larger dust is also brought to job site, urban environment is had a certain impact.In current dress
Connected mode with steel bar stress in formula concrete structure has slurry anchor connection mode, prestressing force connected mode, strength to mechanically connect
Mode, wherein application is most in a manner of slurry anchor connection, slurry anchor connection mode is combined with slip casting and anchorage style, will be due to tearing open
The structure reinforcing bars for dividing and being disconnected reconnect in splicing section part.Due to starching the diameter of anchor sleeve in this connection method
Bar diameter is must be considerably larger than, reduces concrete effective protection aquiclude, Special-Shaped Column concrete structure member section is smaller, this
Shortcoming can seem more prominent, therefore must solve this problem in assembled Special-Shaped Column concrete structure.
The content of the invention
The defects of in order to overcome existing Special-Shaped Column concrete frame structure mounting technology to exist, the utility model provides one
The easy assembled Special-Shaped Column concrete frame structure reliable, free from environmental pollution of kind.
Technical scheme is used by the utility model solves its technical problem：
A kind of assembled Special-Shaped Column concrete frame structure, including prefabricated Special-Shaped Column and precast beam, the precast beam include
Precast main beam and prefabricated secondary beam, the prefabricated Special-Shaped Column are connected with one end of the precast main beam and form node area in junction
Domain；
The prefabricated Special-Shaped Column is divided into prefabricated upper prop and prefabricated lower prop in the node region, under the prefabricated upper prop
It is respectively equipped with pre-buried junction steel plate on the upper surface of end face and the prefabricated lower prop, the pre-buried junction steel plate on the prefabricated upper prop
Welded with the pre-buried junction steel plate on prefabricated lower prop at node region, meanwhile, in the prefabricated post in the post of configuration vertically by
Power reinforcing bar welds and indirectly continuous by pre-buried junction steel plate at the node region with pre-buried junction steel plate；It is described it is prefabricated under
Post is prefabricated with the first stealthy bracket in the one end being connected with precast main beam；
The precast main beam is provided with the girder step of inverted L shape in the one end being connected with prefabricated Special-Shaped Column, and described first is stealthy
Bracket is located at the lower section of the girder step, and the bottom surface of the first stealthy bracket and the bottom surface of precast main beam are on same absolute altitude；
Prepared screw-bolt hole is equipped with the girder step and the first stealthy bracket, the precast main beam is located at the described first stealthy bracket
Top and connected by the first pretension connecting bolt, the first pretension connecting bolt sequentially passes through girder step from top to bottom
On the stealthy bracket of prepared screw-bolt hole and first on prepared screw-bolt hole；
The precast main beam is prefabricated with the second stealthy bracket in the side being connected with prefabricated secondary beam, the prefabricated secondary beam with
One end of precast main beam connection is provided with the secondary beam step of inverted L shape, and the second stealthy bracket is located at the lower section of the secondary beam step,
And second stealthy bracket bottom surface and prefabricated secondary beam bottom surface on same absolute altitude；On the secondary beam step and the second stealthy bracket
Prepared screw-bolt hole is equipped with, the prefabricated secondary beam is located on the described second stealthy bracket and connected by the second pretension connecting bolt
Connect, the second pretension connecting bolt sequentially passes through prepared screw-bolt hole on secondary beam step, on the second stealthy bracket from top to bottom
Prepared screw-bolt hole.
Further, the precast beam can be divided into the common beam of no precast floor slab splicing and for precast floor slab by splicing relation
The spar of splicing, the precast floor slab are provided with bolt mounting groove and prepared screw-bolt hole, the wing on the one end being connected with spar
It also is provided with bolt mounting groove and prepared screw-bolt hole on the alar part of beam, the precast floor slab is located on the alar part of spar and passes through the 3rd
Pretension connecting bolt connects, the 3rd pretension connecting bolt sequentially pass through from top to bottom bolt mounting groove on precast floor slab,
Bolt mounting groove on the alar part of prepared screw-bolt hole on precast floor slab, the prepared screw-bolt hole on the alar part of spar and spar；Institute
The inside for stating precast floor slab and precast beam is equipped with steel bar stress.
Further, the height of the described first stealthy bracket is the half of the precast main beam height, and described first is stealthy
The width of the width of bracket and the precast main beam, the post limb width of prefabricated Special-Shaped Column are identical, the first stealthy bracket it is upper
End face is flushed with the upper surface of prefabricated lower prop, and the first stealthy bracket is integrally formed with the prefabricated lower prop；Described second is hidden
The height of shape bracket is the half of the prefabricated secondary depth of beam.
Further, bolt mounting groove is respectively equipped with the bottom surface of the top surface of the girder step and the first stealthy bracket,
The bolt mounting groove connects with corresponding prepared screw-bolt hole.
Further, the cross sectional shape of the prefabricated Special-Shaped Column is L-shaped or cross or T-shaped or Z-shaped.
Further, the lower surface of the prefabricated upper prop uses 45 ° of grooves on the outside of pre-buried junction steel plate.
Further, the prefabricated upper prop with the joint face of prefabricated lower prop, precast main beam is connected with the first stealthy bracket
On the joint face connect, on the joint face that prefabricated secondary beam is connected with the second stealthy bracket, the connection of the alar part of precast floor slab and spar
Shear key connected mode is used on face.
Further, two neighboring precast floor slab is spliced in precast floor slab width using straight line piece, in prefabricated building
Plate thickness direction is spliced using degree of lip-rounding formula is carved.
Further, bracket steel bar stress and bracket hoop are equipped with the described first stealthy bracket and the second stealthy bracket
Muscle, the core force area that the both ends of the bracket steel bar stress of the first stealthy bracket are both needed to enter prefabricated lower prop carry out anchor
Gu the opposite side that one end of the bracket steel bar stress of the second stealthy bracket need to extend precast main beam is bent；
The prefabricated secondary beam is provided with additional steel bar stress and additional hooping in the one end being connected with precast main beam, described attached
Add the top of steel bar stress parallel with prefabricated secondary beam upper reinforcement and stretch into the middle part of prefabricated secondary beam, under the additional steel bar stress
It is parallel with prefabricated secondary beam bottom steel bar stress after portion's bending.
The beneficial effects of the utility model are mainly manifested in：To using dry type interconnection technique in building structure, by Special-Shaped Column
Whole components of concrete structure are all prefabricated in the factory, and integral knot is assembled in the connection that too small amount of seam is led to scene
Structure, can so cancel the concrete pouring technology of job site, can also eliminate caused by commerical ready-mixed concrete is shipped to urban transportation
Pressure, can eliminate construction site dust produce and concrete conveyance to insecurity caused by urban transportation, also may be used
Really move towards the industrialization and lay the first stone for construction industry；The design of pre-buried junction steel plate, structure are simple and direct, firm；Stealthy bracket is set
Meter, attractive in appearance, saving material；Cost is relatively low.
Brief description of the drawings
Fig. 1 (a) is L-shaped Special-Shaped Column sectional view.
Fig. 1 (b) is cross Special-Shaped Column sectional view.
Fig. 1 (c) is T-shaped Special-Shaped Column sectional view.
Fig. 1 (d) is Z-shaped Special-Shaped Column sectional view.
Fig. 2 is the structural representation of the prefabricated pre-buried junction steel plate in Special-Shaped Column upper surface of L-shaped.
Fig. 3 is the structural representation of the prefabricated pre-buried junction steel plate in Special-Shaped Column lower surface of L-shaped.
Fig. 4 is the connection diagram of the prefabricated upper prop of L-shaped and prefabricated lower prop.
Fig. 5 is the first stealthy bracket arrangement of reinforcement schematic diagram.
Fig. 6 is the connection diagram of prefabricated Special-Shaped Column and precast main beam.
Fig. 7 is Fig. 6 top view.
Fig. 8 is precast main beam, the second of prefabricated secondary beam the stealthy bracket arrangement of reinforcement schematic diagram.
Fig. 9 is the sectional view of spar.
Figure 10 is the connection diagram of floor and spar.
The attached top views for Figure 10 of Figure 11.
Figure 12 is the arrangement of reinforcement schematic diagram of spar.
Figure 13 is the splicing schematic diagram of precast floor slab.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
1~Figure 13 of reference picture, a kind of assembled Special-Shaped Column concrete frame structure, including prefabricated Special-Shaped Column and precast beam,
The precast beam includes precast main beam 10 and prefabricated secondary beam 19, and the prefabricated Special-Shaped Column is connected with one end of the precast main beam 10
And form node region in junction；
The prefabricated Special-Shaped Column is divided into prefabricated upper prop 1 and prefabricated lower prop 2, the prefabricated upper prop 1 in the node region
Lower surface and the prefabricated lower prop 2 upper surface on be respectively equipped with pre-buried junction steel plate, the pre-buried company on the prefabricated upper prop 1
Steel plate is connect to weld at node region with the pre-buried junction steel plate on prefabricated lower prop 2, meanwhile, in the prefabricated post in the post of configuration
Vertical applied force reinforcing bar 4 is with the welding of pre-buried junction steel plate and indirectly continuous by pre-buried junction steel plate at the node region；Institute
State prefabricated lower prop and the first stealthy bracket is prefabricated with the one end being connected with precast main beam 10；
The precast main beam 10 is provided with the girder step of inverted L shape in the one end being connected with prefabricated Special-Shaped Column, and described first is hidden
Shape bracket is located at the lower section of the girder step, and the bottom surface of the first stealthy bracket and the bottom surface of precast main beam 10 are in same absolute altitude
On；Prepared screw-bolt hole 13 is equipped with the girder step and the first stealthy bracket, the precast main beam 10 is located at described first
The top of stealthy bracket is simultaneously connected by the first pretension connecting bolt, and the first pretension connecting bolt sequentially passes through from top to bottom
The prepared screw-bolt hole on the stealthy bracket of prepared screw-bolt hole and first on girder step；
The precast main beam 10 is prefabricated with the second stealthy bracket, the prefabricated secondary beam in the side being connected with prefabricated secondary beam 19
19 are provided with the secondary beam step of inverted L shape in the one end being connected with precast main beam 10, and the second stealthy bracket is located at the secondary beam platform
The lower section of rank, and the bottom surface of the second stealthy bracket and the bottom surface of prefabricated secondary beam 19 are on same absolute altitude；The secondary beam step and
It is equipped with prepared screw-bolt hole 13 on two stealthy brackets, the prefabricated secondary beam 19 is located on the described second stealthy bracket and passes through second
Pretension connecting bolt connects, the second pretension connecting bolt sequentially pass through from top to bottom prepared screw-bolt hole on secondary beam step,
Prepared screw-bolt hole on second stealthy bracket.
Further, the precast beam can be divided into the common beam of no precast floor slab splicing and for precast floor slab by splicing relation
The spar 11 of splicing, the precast floor slab are provided with bolt mounting groove 12 and prepared screw-bolt hole 13 on the one end being connected with spar,
Bolt mounting groove and prepared screw-bolt hole also are provided with the alar part of the spar 11, the precast floor slab 28 is located at the alar part of spar 11
Above and by the 3rd pretension connecting bolt connect, the 3rd pretension connecting bolt sequentially passes through on precast floor slab 28 from top to bottom
Bolt mounting groove, the prepared screw-bolt hole on precast floor slab 28, spar 11 alar part on prepared screw-bolt hole and spar 11 the wing
Bolt mounting groove in portion；The inside of the precast floor slab 28 and precast beam is equipped with steel bar stress.
Further, the height of the described first stealthy bracket is the half of the precast main beam height, and described first is stealthy
The width of the width of bracket and the precast main beam, the post limb width of prefabricated Special-Shaped Column are identical, the first stealthy bracket it is upper
End face is flushed with the upper surface of prefabricated lower prop, and the first stealthy bracket is integrally formed with the prefabricated lower prop；Described second is hidden
The height of shape bracket is the half of the prefabricated secondary depth of beam.
Further, bolt mounting groove is respectively equipped with the bottom surface of the top surface of the girder step and the first stealthy bracket,
The bolt mounting groove connects with corresponding prepared screw-bolt hole.
Further, the cross sectional shape of the prefabricated Special-Shaped Column is L-shaped or cross or T-shaped or Z-shaped.
Further, the lower surface of the prefabricated upper prop 1 uses 45 ° of grooves 7 on the outside of pre-buried junction steel plate.
Further, on the joint face of the prefabricated upper prop 1 and prefabricated lower prop 2,10 and first stealthy bracket of precast main beam
On the joint face being connected, on the joint face that prefabricated secondary beam 19 is connected with the second stealthy bracket, the alar part of precast floor slab and spar
Joint face on use shear key connected mode.
Further, two neighboring precast floor slab is spliced in precast floor slab width using straight line piece 29, prefabricated
Spliced using degree of lip-rounding formula is carved in slab thickness direction.
Further, bracket steel bar stress and bracket hoop are equipped with the described first stealthy bracket and the second stealthy bracket 20
Muscle 18, the core force area that the both ends of the bracket steel bar stress 17 of the first stealthy bracket are both needed to enter prefabricated lower prop 2 are entered
Row anchoring, one end of the bracket steel bar stress 21 of the second stealthy bracket 20 need to extend precast main beam 10 opposite side carry out it is curved
Folding；
The prefabricated secondary beam 19 is provided with additional steel bar stress 23 and additional hooping in the one end being connected with precast main beam 10
24, the top of the additional steel bar stress 23 is parallel with the prefabricated upper reinforcement of secondary beam 19 and stretches into the middle part of prefabricated secondary beam, described attached
Add the bottom of steel bar stress 23 parallel with prefabricated secondary beam bottom steel bar stress after bending.
Main beam stress reinforcing bar 25 and girder stirrup 26 are provided with the precast main beam 10.
In the present embodiment, stealthy bracket 9, which includes the first stealthy bracket and the second stealthy bracket, pretension connecting bolt 14, to be included
First pretension connecting bolt, the second pretension connecting bolt and the 3rd pretension connecting bolt.The connected mode of the shear key includes
Shearing resistance keyway and seat slurry.
General principle of the present utility model is the maturation process and pre-buried technology made using concrete structure batch production,
Beam, plate, rod structure component in the good frame structure of prefabrication, welding and bolt connection technology are recycled by precast concrete structure
Part is assembled at the scene, connects into overall structure.
Because the great advantage of Special-Shaped Column concrete structure is that structural elements section is identical with wall, construction area it is effective
Utilization rate is high.The utility model needs to design bindiny mechanism in junction using dry type connection, and bindiny mechanism mainly uses bracket
Structure adds pretension bolt to connect, and embedded body adds welding method to realize effective connection between component, it is also desirable to using such as shear key
The methods of groove, seat slurry, realizes complementary connection, and all these connection methods are required to joint face contact joint close, and this is just to prefabricated skill
Art proposes higher requirement.
Core of the present utility model is structure Design and Calculation principle and the dry type connection side at scene of concrete prefabricated element
Case, connection scheme are mutually coordinated with element precast design principle.The structure design basic skills of prefabricated components is according to existing coagulation
Soil structure design specification, appropriate adjustment section reinforcing bar configuration mode, is ensureing steel bar stress on the basis of current designs calculating
Under the premise of the section gross area is nondecreasing, by the pre-buried junction steel plate on joint face, the pre-buried connection steel on upper and lower post is welded
Plate realizes the connection of prefabricated special-shaped intercolumniation.Dry type connection scheme include between shaft, beam column, between beam slab three broad aspects connection side
Directly used between case, wherein shaft and be welded to connect form；Pretension bolt connection scheme is added using bracket between beam column；Company between beam slab
Connect the connection scheme for adding pretension bolt using spar.This connection scheme can ensure frame structural beam, the concrete of Column border node is adopted
With precast construction, shaft is all prefabricated, and using prefabricated high performance concrete, the Liang Yuzhu bracket that connects through adds pretension bolt
Mode, and the connection section of shaft is placed among beam section, the rigidity at node is further improved, realizes setting for " strong node "
Meter requires, can not only reduce the complicated technology of cast-in-place concrete at node, while can ensure the shearing resistance requirement of joint face.Beam, post
Between the bracket that connects through add pretension bolt to connect, ensure to be caving by beam during geological process；Floor is directly held on spar
Wing tip, and floor is connected with beam with pretension bolt.
The technical solution of the utility model is built upon existing cast-in-place Special-Shaped Column concrete frame structure (section of Special-Shaped Column
Face form is as shown in Figure 1) and wet type assembled integral concrete frame structure on the basis of propose, wet type assembling at present is overall
Formula frame structure uses cast-in-place concrete at beam, Column border node, and the bottom of precast beam is used for beam, harden structure, and cast-in-place
The iterative structure method of superstructure, core of the present utility model be change in assembled Special-Shaped Column concrete frame structure it is wet
Formula cast-in-place concrete method, by structural elements such as Vierendeel girder, Special-Shaped Column and plates all using prefabricated components, and with passing through pre-buried company
Connect steel plate and be welded with the scheme for connecing and adding pretension bolt to connect with bracket.
Prefabricated reinforced column can perform with floor according to existing Special-Shaped Column the Concrete Structure Design standard, due to
In Special-Shaped Column concrete frame structure, the section of beam is less big, and girder, and the quantity and span of secondary beam are all smaller, therefore at this
By beam, by prefabricated components, combination is divided into two kinds at the scene in utility model, and a kind of is that non-floor splices thereon, can be adopted
With ordinary rectangular beam, if when there is floor to be spliced on beam, spar section can be used as shown in figure 9, spar is also divided into list
Flank beam and bilateral spar, side bar and bilateral floor intermediate beam corresponding to unilateral floor.
First have to determine the layout of beam, post, plate according to architectural design and cast-in-place concrete structure design, then assembled
The partition design of formula precast construction.In principle to post network arrangements without significantly adjusting, main partition design is directed to building cover structure.
Concrete technical scheme is as follows：
1) span and plate width of precast floor slab are determined, determine floor shelves scheme, makes the beam of floor stitching position.
2) section of precast floor slab stitching portion spar and the connection scheme of beam slab are determined, and presses existing the Concrete Structure Design
Specification determines the arrangement of reinforcement and connector of beam.
3) link position of prefabricated upper prop, prefabricated lower prop is designed into the medium position in girder, passes through vertical pretension bolt
Lower prop bracket is connected with beam, while the joint face of post is compressed, improves the Lateral resisting ability of post joint face.
4) floor prefabrication solutions are determined by the floor shape newly divided, by existing concrete floor code for structural design again
Floor arrangement of reinforcement is designed, and determines and the connection scheme of spar and is connected built-in fitting；Determine the connection Reinforcement Design scheme of girder with
And with post and the connection built-in fitting of secondary beam.
5) span of secondary beam is determined, by the arrangement of reinforcement of simply supported beam design secondary beam and the connector with girder.
6) prefabrication solutions of design structure post, every layer of shell of column in principle, can be every when lifting, traffic condition allow
Two layers or more than two layers pillar height are defined as a prefabricated shell of column, and each prefabricated shell of column only needs the pre-buried connection steel in a set of upper and lower end face
Plate, such as Fig. 2, Fig. 3, vertical applied force reinforcing bar in Special-Shaped Column is set between both ends of the surface junction steel plate.
7) it has been prefabricated in the factory after the components such as post, beam, plate, has been transported to building site, dress is combined by design drawing
Match somebody with somebody, make post first, after size to be adjusted meets design requirement, then prefabricated upper prop alignd with prefabricated lower prop, by upper and lower post
Pre-buried junction steel plate welds together on the outside of joint face, after weld seam cooling, cleared welding slag, is closed and welded with high-strength cement mortar
Seam.
8) girder is hung near design attitude, be placed on two side columns bracket, used by the preformed hole on beam and post bracket
Bolt links together bracket and beam, and applies pre-tight stress by design, forms basic frame structure system.
9) secondary beam is lifted and is held on the bracket of both sides girder, then primary and secondary beam is connected to one with connecting bolt
Rise.
10) precast floor slab is lifted, be held on the spar of both sides, and pass through the reserved connecting hole of spar and floor end
Spar and floor are linked together with bolt.
11) the gel-filled all connecting sewings of cement mortar are used, are sealed the expose portion of all connecting bolts and connector.
12) successively carry out post, beam, plate assembling, connect, be sealed until whole concrete structure members be completed.
Specific embodiment of the present utility model is as follows：
1) the utility model is the prefabricated concrete structure of dry type, and component connects to be added with the seat slurry of concrete joint face
Shearing resistance key connection is as auxiliary connection method, between post and post, between post and girder, between girder and secondary beam and beam with
Connected between plate and slurry form is sat using high-strength cement mortar, be equipped with shearing resistance keyway on the joint face of each component, any two
During component connection installation, it is both needed to sit slurry on joint face, and ensures that seat slurry is uniform, filling bag expires in shearing resistance keyway, to be formed
Joint face has good shear resistance.
2) superstructure partition design determines that the form of the composition of precast beam lattice and floor shelve scheme.Consider it is prefabricated, transport and
Lifting condition, the splicing of precast floor slab can be completed on girder, can also completed on secondary beam, and the beam section of spliced floor is
Spar form；Remaining beam is as cast-in-place concrete building roof beam, and using square-section, these beams are directly shelving for floor
Beam, i.e. deck-molding do not include slab thickness.I.e. the splicing of width is as other connecting sewings and joint face between precast floor slab,
Closing is poured into using cement mortar clay.
Special-Shaped Column has four kinds of different sections, but its prefabricated and connection method is similar, now illustrates this practicality by taking L-shaped post as an example
New specific embodiment：
1) according to existing《Concrete profiled pile structure technology code》Calculate the post net and Liang Gebu for determining frame structure
Put；The height of prefabricated post is determined by the manufacturing conditions of precast construction and transport, lifting condition；Arranged according to identified beam lattice,
Determine the span of precast floor slab and plate width and shelve scheme, the beam of floor stitching position is made, in principle by the splice bits of floor
It is seated on girder.
2) prefabrication solutions of structural column are determined, in principle every layer of shell of column, can be every when lifting, traffic condition allow
It is a prefabricated shell of column that two layers or two layers determined above.Each prefabricated shell of column sets the pre-buried junction steel plate 6 in upper surface and lower surface is pre-
Junction steel plate 5 is buried, vertical applied force reinforcing bar 4 in post is configured between the pre-buried junction steel plate in upper and lower end face, and by reinforcing bar and junction steel plate
Mutually weld, pre-buried junction steel plate is made with steel plate of the thickness not less than 10mm, is adopted on the outside of the pre-buried junction steel plate of post lower surface
With 45 ° of grooves, and groove is highly not less than 10mm, welding during to connect, glazing bar width 30mm≤b≤50mm of steel plate, lattice
Clear distance is not less than 100mm between bar, should be wide according to designed Special-Shaped Column limb during pre-buried junction steel plate width E values, and ensures pre-buried
Thickness of concrete cover c >=10mm on the outside of junction steel plate.Prefabricated post connecting end surface sets post joint face shear key 8, pre- in post
Shearing resistance keyway is set when processed between pre-buried junction steel plate glazing bar, its center pillar core space set it is square do not penetrate shearing resistance keyway, and post limb
On set rectangle and do not penetrate shearing resistance keyway, groove depth takes 50mm, and slot opening takes 80mm, and 3 in Fig. 4 are attachment weld, and 8 be post joint face
Shear key；
The first stealthy bracket being connected with girder is set on prefabricated lower prop, the first stealthy bracket is highly no more than deck-molding,
Absolute altitude is identical with prefabricated lower prop upper surface on first stealthy bracket, and at the 1/2 of girder height H；First stealthy bracket
Width is equal with precast main beam width, also wide equal with the limb of Special-Shaped Column, the first stealthy a height of H/2 of bracket, the first stealthy bracket
Length H/2≤w≤H.Because this bracket height is smaller, the both ends of bracket steel bar stress 17 of its main first stealthy bracket be both needed into
The core force area C entered to post is anchored, and each first stealthy bracket is at least provided with two bracket steel bar stresses, bracket by
Power bar diameter Ф >=Φ 12, the spacing@≤80mm of bracket stirrup 18 in the first stealthy bracket, bracket stirrup diameter are not less than Ф
8, formed as shown in figure 5, being poured in the lump during the first stealthy bracket and prefabricated prefabricated lower prop on prefabricated lower prop.
Prefabricated Special-Shaped Column is combined into node with precast main beam junction, and as shown in Figure 6,7,15 be beam, post joint face.With post
Bracket is that the first stealthy bracket is mutually coordinated, and precast main beam is in junction also prefabricated stepped, after being combined with the first stealthy bracket
Same high with precast main beam, the lower surface of the upper surface of precast main beam and the first stealthy bracket sets clamping slot 12, and groove takes deeply only
40mm, groove width can use 50mm, and flute length takes bolt-center, and away from v+60mm, for bolt-center away from v=w/2 is taken, groove bottom requires smooth；
Insertion shear key 16, shear key groove depth >=30mm are set in the middle part of bracket length, flute length takes (v-90) mm；The internal diameter of prepared screw-bolt hole
Take Ф 24mm, the built-in fitting of prepared screw-bolt hole can use steel pipe, bellows, bore be more than diameter of bolt 4mm and more than, pretension
Bolt uses high-strength bolt, diameter Ф 20mm.
Post and girder junction girder reinforcing bar collocation form can refer to the arrangement of reinforcement of girder and secondary beam junction secondary beam, such as Fig. 8,
In the longitudinally disposed additional steel bar stress of girder, and both ends enter girder top and bottom is parallel with girder Reinforcement takes
Meet segment length >=3w.
3) precast main beam and the connection of prefabricated secondary beam also use implicit bracket form, due to secondary beam in Framed Structure with Special-Shaped Columns
It is less, and prefabricated secondary deck-molding H1Often identical with the high H of girder, the height of bracket still takes the half of time depth of beam, i.e. H1/ 2, bracket is wide
Degree, with width, is poured and formed with secondary beam in the lump in precast main beam.Bracket and secondary beam are both needed to configure additional steel bar stress in junction
And additional stirrup, as shown in Figure 8, additional Reinforcement diameterStirrup diameter >=Ф 8.It is reserved single
Spiro keyhole position is in the second stealthy long w of bracket1Centre position, bolt hole and the diameter of bolt are identical with bracket on post, connect groove width
Degree and depth are also identical；The both sides correspondence position of bracket and secondary beam joint face respectively set one insertion shearing resistance keyway, groove depth >=
30mm, groove width take 60mm.
Second stealthy bracket is that the bracket steel bar stress 21 on girder bracket need to extend precast main beam opposite side and be bent,
Length into precast main beam will meet the anchorage length requirement of tension reinforcement, and the spacing@of bracket stirrup 22 on girder bracket≤
80mm, and arrange always to precast main beam opposite side, when both sides are symmetrical arranged prefabricated secondary beam, the stirrup in precast main beam can
It is considered as both sides bracket to share.
Prefabricated secondary beam and girder bracket junction also prefabricated stepped, keep and prefabricated secondary beam after being combined with girder bracket
With height, secondary beam junction should set the additional steel bar stress 23 in longitudinal direction, add the top of steel bar stress 23 and prefabricated secondary beam top stress steel
Muscle is parallel, and stretches into the length of bench of secondary beam step three times, namely enters 3w in the middle part of secondary beam1, behind the curved side in bottom with secondary beam bottom
Steel bar stress is parallel, and with beam bottom lapped length of steel bar >=3w1；Secondary beam original upper reinforcement keeps constant, only under beam-ends right angle
Curved, secondary beam original bottom steel bar stress is becoming up to secondary beam compressive region at step on right angle, and should meet anchorage length of steel bar requirement.
4) section of precast floor slab stitching portion spar 11 is determined, as shown in figure 9,27 be shearing resistance keyway；According to spar span
Spar deck-molding h is determined, deck-siding b is determined according to deck-molding1, typically take h=(1.5~2.5) b1；Can be by cast-in-place structural girder deck-molding H
Determination mode determine h values, wing height desirable 2 times the high e of the spar wing desirable thickness of slab t for shelving floor, the wide a of the wing, i.e. a=2c.
The arrangement of reinforcement of beam is determined by existing Code for design of concrete structures, the alar part arrangement of reinforcement of spar presses fixed end Design of Cantilever Beam, beam section
Arrangement of reinforcement is as shown in figure 12.
5) floor prefabrication solutions are determined by the floor shape newly divided, by existing concrete floor code for structural design again
The arrangement of reinforcement of precast floor slab 28 is designed, precast floor slab both ends set bolt mounting groove 12 with spar junction, and groove depth takes 40mm or so, treats
After connection, concordant with floor face after backfilling cement mortar in groove is standard；The pretension connecting bolt spacing c of every piece of floor and spar
=200~400mm, and no less than 3, the diameter of pretension connecting bolt takes 16~Ф of Ф 20 to be advisable, and as shown in Figure 11,12, B is
Precast floor slab width.
6) for the reinforcement scheme of precast main beam 10 of cast-in-place concrete design, simply supported beam checking computations are carried out to precast main beam,
Meet bearing capacity and the deformation of simply supported beam when seeking common ground；The span of prefabricated secondary beam 19 is determined, its arrangement of reinforcement is redesigned by simply supported beam.
7) it has been prefabricated in the factory after the components such as post, beam, plate, has been transported to building site, dress is combined by design drawing
Match somebody with somebody, first by the lower prop of post net design and installation column, after adjustment size meets design requirement, girder hung near design attitude,
It is placed on the bracket of both sides, bracket, beam-ends is linked together with connecting bolt in post side, and pretension is applied to bolt by design
Stress, form basic frame structure system.
8) upper prop for lifting by crane prefabricated Special-Shaped Column docks with lower prop, in post side that junction steel plate is spot-welded together, and adjustment is vertical
After post three-dimensional dimension, by fillet in parallel shear full weld, it is desirable to which weld seam is continuous and full.
9) prefabricated secondary beam is lifted and is held on the bracket of both sides girder, then connected primary and secondary beam with connecting bolt
Together, after the secondary beam on girder is all installed in place, pre-tight stress is applied to spiral shell, forms floor beam lattice system.
10) precast floor slab is lifted, be held on the spar of both sides, and pass through the reserved connecting hole of spar and floor end
Spar and floor are linked together with bolt.
11) correction after floor plates laying in place, will be measured, piece adjustment reason, treats full floor or subregion floor
After being adjusted in place, pre-tight stress is applied to floor and spar connecting bolt, forms Structural Floor System substantially.
12) with the gel-filled all connecting sewings of cement mortar, weld seam, to bolt hole, the slip casting of floor piece 29, it is sealed all
The expose portion of connecting bolt and connector.When floor width splices, first mouth sets gel cementing band 30 under floor seam,
From unification suitable for reading to piece slip casting after the completion of splicing, and cement mortar screeding is used after upper edge stitches one nylon wire of paving.It is prefabricated
The splicing of floor width uses straight line piece 29, in precast floor slab thickness direction using the splicing of degree of lip-rounding formula is carved, such as Figure 13 institutes
Show.
13) successively carry out post, beam, plate assembling, connect, be sealed until whole concrete structure members be completed.
It is can refer to for the other structures such as the Special-Shaped Column of other forms, beam and balcony beam and balcony slab at the present embodiment
Reason.
One of key technology of this invention all using dry type connected mode, realizes Special-Shaped Column concrete frame structure
Special-Shaped Column concrete structure it is complete prefabricated, and job site no longer needs cast-in-place concrete.
The prefabricated and assembling of pillar employs the pre-buried junction steel plate in both ends in this invention, and scene directly welding manner is carried out
Assembling, method are easy to be reliable；Post adds pretension bolt additional seat slurry and shear key with girder, girder and secondary beam, using stealthy bracket
Slot form is attached, and prefabricated and assembling mode is unified.
This invention solves industrialized production and the construction of Special-Shaped Column cast-in-place concrete frame structure widely used at present
Problem, the general technology of building industrialization and prefabricated concrete structure is applied in Special-Shaped Column concrete frame structure, it is rich
The rich form of prefabricated concrete structure, makes to be more widely used by this structure technology that China creates.Simultaneously will
Dry type interconnection technique is applied in Special-Shaped Column concrete frame structure, cancels the technique and equipment of on-site concrete cast, reduces
A series of problems, such as building airborne dust and Urban Transportation pressure.Make the special-shaped column technology and concrete structure in concrete structure
Prefabricating technique be combined, realize that Special-Shaped Column concrete frame structure realizes full cast in place and precast construction, i.e., dry type concrete fills
With integration.
Claims (9)
- A kind of 1. assembled Special-Shaped Column concrete frame structure, it is characterised in that：It is described pre- including prefabricated Special-Shaped Column and precast beam Beam processed includes precast main beam and prefabricated secondary beam, and the prefabricated Special-Shaped Column is connected with one end of the precast main beam and in junction shape Into node region；The prefabricated Special-Shaped Column is divided into prefabricated upper prop and prefabricated lower prop, the lower surface of the prefabricated upper prop in the node region With being respectively equipped with pre-buried junction steel plate on the upper surface of the prefabricated lower prop, pre-buried junction steel plate on the prefabricated upper prop with it is pre- Pre-buried junction steel plate on lower prop processed welds at node region, meanwhile, vertical applied force steel in the post of configuration in the prefabricated post Muscle welds and indirectly continuous by pre-buried junction steel plate at the node region with pre-buried junction steel plate；The prefabricated lower prop exists The one end being connected with precast main beam is prefabricated with the first stealthy bracket；The precast main beam is provided with the girder step of inverted L shape, the first stealthy bracket in the one end being connected with prefabricated Special-Shaped Column Positioned at the lower section of the girder step, and the bottom surface of the first stealthy bracket and the bottom surface of precast main beam are on same absolute altitude；It is described Prepared screw-bolt hole is equipped with girder step and the first stealthy bracket, the precast main beam is located at the upper of the described first stealthy bracket Side is simultaneously connected by the first pretension connecting bolt, and the first pretension connecting bolt sequentially passes through on girder step from top to bottom Prepared screw-bolt hole on prepared screw-bolt hole and the first stealthy bracket；The precast main beam is prefabricated with the second stealthy bracket in the side being connected with prefabricated secondary beam, the prefabricated secondary beam with it is prefabricated One end of girder connection is provided with the secondary beam step of inverted L shape, and the second stealthy bracket is located at the lower section of the secondary beam step, and the The bottom surface of two stealthy brackets is with the bottom surface of prefabricated secondary beam on same absolute altitude；The secondary beam step on the second stealthy bracket with being all provided with There is prepared screw-bolt hole, the prefabricated secondary beam is located on the described second stealthy bracket and connected by the second pretension connecting bolt, institute State the second pretension connecting bolt and sequentially pass through prepared screw-bolt hole on secondary beam step, reserved on the second stealthy bracket from top to bottom Bolt hole.
- A kind of 2. assembled Special-Shaped Column concrete frame structure as claimed in claim 1, it is characterised in that：The precast beam is pressed Splicing relation can be divided into the common beam of no precast floor slab splicing and the spar for precast floor slab splicing, the precast floor slab with Spar connection one end be provided with bolt mounting groove and prepared screw-bolt hole, also be provided with the alar part of the spar bolt mounting groove with Prepared screw-bolt hole, the precast floor slab are located on the alar part of spar and connected by the 3rd pretension connecting bolt, and the described 3rd is pre- It is close to connecting bolt and sequentially passes through the bolt mounting groove on precast floor slab, the prepared screw-bolt hole on precast floor slab, spar from top to bottom Alar part on prepared screw-bolt hole and spar alar part on bolt mounting groove；The inside of the precast floor slab and precast beam is all provided with There is steel bar stress.
- A kind of 3. assembled Special-Shaped Column concrete frame structure as claimed in claim 1 or 2, it is characterised in that：Described first The height of stealthy bracket is the half of the precast main beam height, the width of the first stealthy bracket and the precast main beam Width, the post limb width of prefabricated Special-Shaped Column are identical, and the upper surface of the first stealthy bracket flushes with the upper surface of prefabricated lower prop, The first stealthy bracket is integrally formed with the prefabricated lower prop；The height of the second stealthy bracket is the prefabricated secondary deck-molding The half of degree.
- A kind of 4. assembled Special-Shaped Column concrete frame structure as claimed in claim 1 or 2, it is characterised in that：The girder Bolt mounting groove is respectively equipped with the bottom surface of the top surface of step and the first stealthy bracket, the bolt mounting groove is reserved with corresponding Bolt hole connects.
- A kind of 5. assembled Special-Shaped Column concrete frame structure as claimed in claim 1 or 2, it is characterised in that：It is described prefabricated The cross sectional shape of Special-Shaped Column is L-shaped or cross or T-shaped or Z-shaped.
- A kind of 6. assembled Special-Shaped Column concrete frame structure as claimed in claim 1 or 2, it is characterised in that：It is described prefabricated The lower surface of upper prop uses 45 ° of grooves on the outside of pre-buried junction steel plate.
- A kind of 7. assembled Special-Shaped Column concrete frame structure as claimed in claim 2, it is characterised in that：The prefabricated upper prop With on the joint face of prefabricated lower prop, on the joint face that precast main beam is connected with the first stealthy bracket, prefabricated secondary beam and second hidden Shear key connected mode is used on the joint face of shape bracket connection, on the joint face of the alar part of precast floor slab and spar.
- A kind of 8. assembled Special-Shaped Column concrete frame structure as claimed in claim 2, it is characterised in that：It is two neighboring prefabricated Floor is spliced in precast floor slab width using straight line piece, is spliced in precast floor slab thickness direction using degree of lip-rounding formula is carved.
- A kind of 9. assembled Special-Shaped Column concrete frame structure as claimed in claim 3, it is characterised in that：Described first is stealthy Bracket steel bar stress and bracket stirrup, the bracket stress steel of the first stealthy bracket are equipped with bracket and the second stealthy bracket The core force area that the both ends of muscle are both needed to enter prefabricated lower prop is anchored, the bracket steel bar stress of the second stealthy bracket One end need to extend the opposite side of precast main beam and bent；The prefabricated secondary beam is provided with additional steel bar stress and additional hooping in the one end being connected with precast main beam, it is described it is additional by The top of power reinforcing bar is parallel with prefabricated secondary beam upper reinforcement and stretches into the middle part of prefabricated secondary beam, and the bottom of the additional steel bar stress is curved It is parallel with prefabricated secondary beam bottom steel bar stress after folding.
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| CN107165271A (en) * | 2017-07-07 | 2017-09-15 | 浙江工业大学工程设计集团有限公司 | A kind of assembled Special-Shaped Column concrete frame structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165271A (en) * | 2017-07-07 | 2017-09-15 | 浙江工业大学工程设计集团有限公司 | A kind of assembled Special-Shaped Column concrete frame structure |
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