CN206707005U - A kind of prefabricated PC concrete frame structure - Google Patents

A kind of prefabricated PC concrete frame structure Download PDF

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Publication number
CN206707005U
CN206707005U CN201720332777.7U CN201720332777U CN206707005U CN 206707005 U CN206707005 U CN 206707005U CN 201720332777 U CN201720332777 U CN 201720332777U CN 206707005 U CN206707005 U CN 206707005U
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China
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prefabricated
post
precast
bolt
bracket
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章雪峰
杨俊杰
单玉川
郑曙光
任海刚
郑丽海
张震伟
金成�
傅林峰
杨超越
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ZHEJIANG JIELI CONSTRUCTION GROUP Ltd Co
Zhejiang University Of Technology Engineering Design Group Co Ltd
Detection Technology Co Ltd of ZJUT
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ZHEJIANG JIELI CONSTRUCTION GROUP Ltd Co
Zhejiang University Of Technology Engineering Design Group Co Ltd
Detection Technology Co Ltd of ZJUT
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Abstract

A kind of prefabricated PC concrete frame structure, including prefabricated post and precast beam, the precast beam include precast main beam and prefabricated secondary beam, and the prefabricated post is connected with one end of the precast main beam and forms node region in junction;The prefabricated post is divided into prefabricated upper prop and prefabricated lower prop in the node region, and the prefabricated upper prop is embedded with horizontal connection steel plate in the one end being connected with precast main beam, and the prefabricated lower prop is prefabricated with the first bracket in the one end being connected with precast main beam;The precast main beam is connected with the connected one end of prefabricated post between the horizontal connection steel plate and the first bracket and by the first pretension connecting bolt, in the precast main beam presstressed reinforcing steel passage is being reserved with along its length direction, presstressed reinforcing steel is provided with the presstressed reinforcing steel passage, the both ends of presstressed reinforcing steel are anchored in prefabricated post.The utility model provides a kind of prefabricated PC concrete frame structure for reducing dust, easily promoting.

Description

A kind of prefabricated PC concrete frame structure
Technical field
The utility model belongs to assembled architecture technical field, more particularly to a kind of prefabricated PC concrete frame knot Structure.
Background technology
Industrialized building at home and abroad progressively substitutes extensive field fabrication building, prefabricated using batch production, in building work Field assembling, it is the direction of construction industry development, it has also become the national strategy of Building Trade in China development is carried out energetically.Industry at present The primary structure form for changing building is assembled monolithic concrete structure, that is, be prefabricated in the factory primary structural member, enters to scene Luggage is matched somebody with somebody, and local cast-in-place part concrete, makes to connect into an overall structure between component.
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.
The content of the invention
In order to overcome the shortcomings of the prior art, the utility model provides a kind of assembled for reducing dust, easily promoting Prestressed concrete frame.
Technical scheme is used by the utility model solves its technical problem:
A kind of prefabricated PC concrete frame structure, including include including prefabricated post and precast beam, the precast beam Precast main beam and prefabricated secondary beam, the prefabricated post are connected with one end of the precast main beam and form node region in junction;
The prefabricated post is divided into prefabricated upper prop and prefabricated lower prop in the node region, the prefabricated upper prop with it is described pre- It is connected between lower prop processed at node region by starching anchor sleeve with connection reinforcing bar, meanwhile, it is embedded with post in the prefabricated post Vertical applied force reinforcing bar is continuous at the node region in interior vertical applied force reinforcing bar and the post;The prefabricated upper prop with it is prefabricated One end of girder connection is embedded with horizontal connection steel plate, and the prefabricated lower prop is prefabricated with first in the one end being connected with precast main beam Bracket;
The precast main beam the one end being connected with prefabricated post between the horizontal connection steel plate and the first bracket simultaneously Connected by the first pretension connecting bolt, for the precast main beam with being equipped with pre-embedded bolt hole on the first bracket, described first is pre- Be close to connecting bolt sequentially pass through from top to bottom it is pre- on horizontal connection steel plate, the pre-embedded bolt hole in precast main beam and the first bracket Bury bolt hole;Presstressed reinforcing steel passage is being reserved with along its length direction in the precast main beam, in the presstressed reinforcing steel passage Provided with presstressed reinforcing steel, the both ends of presstressed reinforcing steel are anchored in prefabricated post;
The prefabricated secondary beam is provided with link slot and pre-embedded bolt hole, the prefabricated master on the one end being connected with precast main beam Beam is prefabricated with the second bracket in the side being connected with prefabricated secondary beam, and link slot and pre-embedded bolt also are provided with second bracket Hole, the prefabricated secondary beam are located on second bracket and connected by the second pretension connecting bolt, the second pretension connection Bolt sequentially passes through the link slot on the prefabricated secondary beam, pre-embedded bolt hole on prefabricated secondary beam, pre- on the second bracket from top to bottom Bury the link slot on bolt hole and the second 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 of splicing, the precast floor slab are provided with link slot and pre-embedded bolt hole on the one end being connected with spar, the spar Link slot and pre-embedded bolt hole also are provided with alar part, the precast floor slab is located on the alar part of spar and connected by the 3rd pretension Bolt connection, the 3rd pretension connecting bolt sequentially pass through link slot on precast floor slab, on precast floor slab from top to bottom Pre-embedded bolt hole, spar alar part on pre-embedded bolt hole and spar alar part on link slot;The precast floor slab with it is prefabricated The inside of beam is equipped with steel bar stress.
Further, the prefabricated upper prop the lower surface of node region it is pre-buried slurry anchor sleeve, prefabricated lower prop is in the section The reserved connection reinforcing bar in upper surface in point region, the connection reinforcing bar insert in slurry anchor sleeve and inject cement mortar.
Further, it is additionally provided with end plate on the one end of the horizontal connection steel plate in prefabricated upper prop.
Further, when prefabricated post is prefabricated corner post, prefabricated corner post is reserved in post outer corners along its short transverse There are vertical prestressing bolt channels and the pre-stressed bolt groove of end in post, vertical prestressing bolt in advance should through vertical in post Power bolt channels and its jointing is located in the pre-stressed bolt groove.
Further, the prefabricated upper prop with the joint face of prefabricated lower prop, precast main beam is connected with the first bracket Adopted on joint face, on the joint face that prefabricated secondary beam is connected with the second bracket, on the joint face of the alar part of precast floor slab and spar With shear key and sit the connected mode starched.
Further, the jointing of the vertical prestressing bolt uses the long nut of outer-hexagonal.
The beneficial effects of the utility model are mainly manifested in:To using prestressing technique and comprehensive factory in building structure Change prefabricating technique, the structural elements of concrete structure is all prefabricated in the factory, will using prestressing technique into assembled in situ Structural elements assembling is integral, only leads to too small amount of seam and prestressing force passage perfusion mortar to realize the mixed of dry type assembling entirety Xtah Crude Clay structure form, can so cancel the concrete pouring technology of job site, can also eliminate commerical ready-mixed concrete and be shipped to city Pressure caused by traffic, the dust that can eliminate construction site produce and concrete conveyance is to uneasy caused by urban transportation Quan Xing, or construction industry really move towards the industrialization and laid the first stone.
Brief description of the drawings
Fig. 1 is the connection diagram of prefabricated center pillar and precast main beam.
Fig. 2 is Fig. 1 top view.
Fig. 3 is the connection diagram of prefabricated side column and precast main beam.
Fig. 4 is Fig. 3 top view.
Fig. 5 is the connection diagram of prefabricated corner post and girder.
Fig. 6 is Fig. 5 top view.
Fig. 7 is the sectional view of spar.
Fig. 8 is the connection diagram of precast main beam and prefabricated secondary beam.
Fig. 9 is Fig. 8 top view.
Figure 10 is the connection diagram of precast floor slab and spar.
Figure 11 is Figure 10 top view.
Figure 12 is the structural representation of horizontal connection steel plate.
Figure 13 is Figure 12 A-A sectional views.
Figure 14 is the arrangement of reinforcement schematic diagram of spar.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
1~Figure 14 of reference picture, a kind of prefabricated PC concrete frame structure, including prefabricated post and precast beam, it is described Precast beam includes precast main beam 8 and prefabricated secondary beam 19, and the prefabricated post is connected and in junction with one end of the precast main beam 8 Form node region;
The prefabricated post is divided into prefabricated upper prop 1 and prefabricated lower prop 2, the prefabricated upper prop 1 and institute in the node region State and be connected at node region by starching anchor sleeve with connection reinforcing bar between prefabricated lower prop 2, meanwhile, it is pre-buried in the prefabricated post There is in post vertical applied force reinforcing bar 14 in vertical applied force reinforcing bar 14 and the post continuous at the node region;The prefabricated upper prop 1 be embedded with horizontal connection steel plate 5 in the one end being connected with precast main beam 8, and the prefabricated lower prop 2 is being connected with precast main beam 8 One end is prefabricated with the first bracket;
The precast main beam 8 is in the one end being connected with prefabricated post between the bracket of horizontal connection steel plate 5 and first And connected by the first pretension connecting bolt, it is equipped with pre-embedded bolt hole on the bracket of precast main beam 8 and first, described first Pretension connecting bolt sequentially passes through on horizontal connection steel plate 5, the pre-embedded bolt hole in precast main beam and the first bracket from top to bottom Pre-embedded bolt hole;Presstressed reinforcing steel passage 9 is being reserved with along its length direction in the precast main beam, the presstressed reinforcing steel leads to Presstressed reinforcing steel is provided with road 9, the both ends of presstressed reinforcing steel are anchored in prefabricated post;
The prefabricated secondary beam 19 is provided with link slot 17 and pre-embedded bolt hole 7 on the one end being connected with precast main beam 8, described Precast main beam 8 is prefabricated with the second bracket in the side being connected with prefabricated secondary beam, and the He of link slot 17 also is provided with second bracket Pre-embedded bolt hole 7, the prefabricated secondary beam 19 are located on second bracket and connected by the second pretension connecting bolt, and described the Two pretension connecting bolts sequentially pass through from top to bottom the link slot on prefabricated secondary beam 19, the pre-embedded bolt hole on prefabricated secondary beam 19, The link slot in pre-embedded bolt hole and the second bracket on second 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 15 of splicing, the precast floor slab 16 are provided with link slot 17 and pre-embedded bolt hole, institute on the one end being connected with spar 15 State and link slot and pre-embedded bolt hole also are provided with the alar part of spar, the precast floor slab is located on the alar part of spar and passes through the 3rd Pretension connecting bolt connects, and the 3rd pretension connecting bolt sequentially passes through link slot on precast floor slab, prefabricated from top to bottom Link slot on the alar part of pre-embedded bolt hole on floor, the pre-embedded bolt hole on the alar part of spar and spar;The prefabricated building The inside of plate 16 and precast beam is equipped with steel bar stress.
Further, the prefabricated upper prop 1 the lower surface of node region it is pre-buried slurry anchor sleeve, prefabricated lower prop 2 is described The reserved connection reinforcing bar in the upper surface of node region, the connection reinforcing bar insertion are starched in anchor sleeve and inject cement mortar.
Further, it is additionally provided with end plate on the one end of the horizontal connection steel plate 5 in prefabricated upper prop 1.
Further, when prefabricated post is prefabricated corner post, prefabricated corner post is reserved in post outer corners along its short transverse There are vertical prestressing bolt channels and the pre-stressed bolt groove 10 of end in post, vertical prestressing bolt 11 passes through vertical in post Pre-stressed bolt passage and its jointing is located in the pre-stressed bolt groove.
Further, the prefabricated upper prop 1 with the joint face of prefabricated lower prop 2, precast main beam 8 is connected with the first bracket Joint face on, on the joint face that is connected with the second bracket of prefabricated secondary beam 19, the connection of precast floor slab 16 and the alar part of spar 15 Using the connected mode of shear key and seat slurry on face.Shearing resistance keyway 41 is usually designed on prefabricated component, it is under one Recessed notch, when seated, joint face sit slurry compress after, cement mortar is filled with groove, after solidification just turn into shear key and Sit slurry 4.
Further, the jointing of the vertical prestressing bolt 11 uses the long nut of outer-hexagonal.
In the present embodiment, prefabricated post includes prefabricated center pillar, prefabricated side column, prefabricated corner post, and bracket 3 includes the first bracket and the Two brackets, pretension connecting bolt 6 include the first pretension connecting bolt, the second pretension connecting bolt and the 3rd pretension connecting bolt.
General principle of the present utility model in advance should using the maturation process that concrete structure batch production makes and pre-tensioning system Power technology, beam, plate, the rod structure component being prefabricated in the factory in frame structure, recycle rear tension prestress technology will be prefabricated Concrete component is assembled at the scene, connects into overall structure.
Due to pretensioned prestressing and rear tension prestress technology are introduced into concrete frame structure simultaneously, it is necessary to Appropriate adjustment is carried out in the design method of concrete frame structure, to be mainly that post-stressed connection reserves connection Channel position and anchorage point, while to consider the not same-action of deformed bar and nonprestressed reinforcement in structure, make it Co-ordination.Need to design bindiny mechanism in junction using dry type connection, after bindiny mechanism is mainly added using bracket structure Open method prestressing force, it is also desirable to which, using such as the methods of keyway, pin, all these connection methods are required to sit at slurry on joint face Reason;
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, section reinforcing bar configuration mode is adjusted on the basis of current designs calculating, ensureing the total face of section reinforcing bar Under the conditions of product is nondecreasing, more fine steel ribs are replaced with bar reinforcement, is concentrated and is arranged symmetrically instead of dispersed placement with reinforcing bar, be post-tensioning Method deformed bar reserves passage and tensioning space.Dry type connection scheme include between shaft, beam column, between plate-girder three broad aspects company Scheme is connect, the connection wherein between shaft pre- is close to plus external using the slurry anchor form of sleeve commonly used in the connection of current wet type The solid scheme of vertical applied force reinforcing bar is combined in post on connecting bolt and shaft;Add beam pre- using bracket pretension connecting bolt between beam column Stress rib passes through the scheme of node;Connection between plate-girder adds the connection scheme of pretension connecting bolt using spar.This connection scheme It can ensure that the concrete of frame structure bean column node uses precast construction, realize the design requirement of " strong node ";Rod structure exists Floor face is connected, and shaft is all prefabricated, then resists the level of post joint face by the pretension connecting bolt through post joint face Cut the cast-in-place wet type connection of bearing capacity ratio node to be further strengthened, there is no cast-in-place concrete segment on shaft, full post is adopted With prefabricated high performance concrete, it is ensured that the limit lateral capacity requirement of shaft;The bracket that connects through of beam and post adds beam in advance should Power muscle passes through the scheme of node, can not only reduce the complicated technology of cast-in-place concrete at node, while can ensure the anti-of joint face Requirement is cut, ensures to be caving by beam during geological process;Floor is directly held on the alar part of spar, and will with pretension connecting bolt Floor is connected with beam.
The technical solution of the utility model is built upon existing cast-in-place concrete frame structure and wet type assembled integral Itd is proposed on the basis of concrete frame structure, wet type prefabricated integral frame structure uses cast-in-place at beam, Column border node at present Concrete, the bottom of precast beam is used for beam, harden structure, and the iterative structure method of cast-in-place superstructure, this practicality are new The core of type is to change wet type cast-in-place concrete method, by structural elements such as Vierendeel girder, post and plates all using prefabricated components, and The scheme connected with slurry anchor sleeve Prestressing muscle with pretension connecting bolt.
Prefabricated reinforced column can perform with floor according to existing the Concrete Structure Design standard, prestressed concrete Tu Liang is divided into two kinds, for girder, can be performed according to existing post-tensioned prestressing concrete beam design standard, for secondary Beam, when span is larger, generally more than 10m when can be designed according to pre-tensioning system or post tentioned prestressed concrete girder, and for one As span secondary beam, can be designed using normal concrete structural beams.The section arrangement of beam can be divided into two kinds, and one kind is at it Upper non-floor splicing, ordinary rectangular beam or T-shaped beam can be used, if when there is floor to be spliced on beam, spar can be used Section is as shown in figure 3, spar can also be divided into unilateral spar and bilateral spar, in the side bar and bilateral floor corresponding to unilateral floor Between beam.
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. Comprise the following steps that:
1) span and plate width of precast floor slab are determined, determine precast floor slab shelves scheme, makes precast floor slab splice bits The beam put.
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 pretension connecting bolt Liang Yuzhu is connected by the pre-buried horizontal connecting plate of the bracket on lower prop and upper prop, while the joint face of post is compressed, is improved The Lateral resisting ability of post joint face;For corner post, it is contemplated that the vertical precompression in the side of post four is uneven, increases by one in post outer corners Vertical prestressing bolt, such as Fig. 2 in root post, with the assembling of framework, successively apply prestressing force and successively vertical in spreading post in advance should Power bolt.
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 presstressed reinforcing steel design side of precast main beam Case and anchoring process, and with post and the connector of secondary beam.
5) span of prefabricated 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 It is defined as a prefabricated shell of column two layers.Pre-buried shell of column is distinguished in joint face two side columns by existing slurry anchor sleeve connection method Starch vertical applied force reinforcing bar in anchor sleeve and reserved post.
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 column, then girder is hung near design attitude, be placed on the bracket of both sides, in post side connecting bolt by bracket, beam The junction steel plate of horizontal direction links together on end and post, and applies pre-tight stress by design, forms basic frame structure System.
8) 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) presstressed reinforcing steel is worn on girder, applies prestressing force at both ends, and anchor it.
12) the gel-filled all connecting sewings of cement mortar are used, are sealed the expose portion of all connecting bolts and connector.
13) 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) citation form of the prefabricated concrete component connection of the utility model dry type is the seat of concrete joint face Slurry plus shearing resistance keyway add pretension connecting bolt, and the connection for girder and post recycles the presstressed reinforcing steel of girder to further enhance frame Set a roof beam in place, the connectivity of intercolumniation, it can be ensured that the resistance to overturning of frame structure.
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 can use rectangle and T-shaped, these beams are the direct of floor as cast-in-place concrete building roof beam Beam is shelved, i.e. deck-molding does not include slab thickness, and precast floor slab is placed in above precast beam.Between precast floor slab, i.e. width Splicing pours into closing as other connecting sewings and joint face using cement mortar gel.
3) between prefabricated post and precast main beam, girder and secondary beam, floor and spar shelve joint face using shear key and 4 connected modes of slurry are sat, to ensure during installation to sit slurry uniform, shearing resistance keyway 41 is filled full.
Now illustrate by taking the connection of spar and floor that common center pillar and girder, girder and secondary beam, both ends are shelved as an example pre- The structure fabrication of frame structure processed and assembling scheme:
1) according to existing《Code for design of concrete structures》The post net for determining frame structure and beam lattice arrangement are calculated, by pre- The manufacturing conditions of structure processed and transport, lifting condition determine the height of prefabricated post;Arranged, determined prefabricated according to identified beam lattice The span and plate width of floor and scheme is shelved, make the beam of floor stitching position, the stitching position of floor is placed on master in principle Liang Shang.
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 defined as a prefabricated shell of column two layers.Vertical applied force reinforcing bar is using slurry anchor sleeve connection between upper and lower shell of column, by existing slurry anchor set Cylinder interconnection technique code is in the pre-buried slurry anchor sleeve in the prefabricated lower end surface side of upper prop 1, the reserved connection reinforcing bar in the prefabricated upper surface of lower prop 2;Together When in the pre-buried horizontal connection steel plate 5 of upper prop, in the prefabricated bracket 3 of prefabricated lower prop.As shown in Figure 1, Figure 2, Figure 3 and Figure 4, center pillar and side The connection of post and girder.
Column sectional is prefabricated, and vertical applied force reinforcing bar arrangement of reinforcement total cross section is constant in post, vertical applied force reinforcing bar in appropriate adjustable column Allocation position, avoid mutually conflicting with the presstressed reinforcing steel on girder 8, vertical applied force reinforcing bar in post can be adjusted if necessary it is thick, and to Concentrate corner;The bracket being connected and horizontal connection steel plate 5 are being designed with girder join domain, the design method of bracket 3 can With reference to existing concrete structure bracket design method, and reserved pretension bolt hole 7, per side 6 numbers of connecting bolt and diameter according to Beam size determines that general girder is advisable with 2, diameter Ф=20~40mm of pretension connecting bolt;It is horizontal such as Figure 12 and Figure 13 The thickness i of junction steel plate 5 can be according to beam desirable 15~30mm of different sizes, and is mutually welded with vertical applied force reinforcing bar to determine its position Put, and in rear end welding end plate, end plate thickness≤i, horizontal connection steel plate stretch into it is as long as possible in post, with all directions horizontal connection steel Plate stretches into length equilibrium in post and not conflicted for principle;If take the thick end plates of 20mm;For connecting plate upper surface absolute altitude, compare girder The low 40mm of upper surface absolute altitude;If d is the diameter of bolt hole of pretension connecting bolt, d=Ф+4mm;K is the width of horizontal connection steel plate Degree, k=b-20mm, b are deck-siding;J is that back gauge controls size, can use j=2 Ф;E is the post length of side.
For corner post, except girder direction both sides are using pretension bolt connection, increase a vertical post-tensioning in post outer corners Method pre-stressed bolt 11, the position of the passage of this bolt and the jointing 12 of end should be reserved when the post is prefabricated and in advance should Power bolt slot 10, jointing 12 using outer-hexagonal long nut form, in the pre-buried long nut in corner post basis relevant position, Stay bolt is penetrated and bolt one end is screwed into fixing bolt after long nut specific length by shell of column lifting in the lump simultaneously, in upper prop Upper end is screwed into nut again, and tightens;So circulation, successively spreading pillar and bolt, successively apply compressive pre-stress, such as Fig. 5 Shown in Fig. 6.
3) section of floor stitching portion spar 15 is determined, as shown in fig. 7, determining spar deck-molding h according to spar span, can be pressed The determination mode of cast-in-place structural girder deck-molding determines h values, the high e of the spar the wing desirable floor thickness t for shelving floor, the wide a of the wing desirable 2 The wing again is high, i.e. a=2e;B is deck-siding.The arrangement of reinforcement of beam, the alar part arrangement of reinforcement of spar are determined by existing Code for design of concrete structures By fixed end Design of Cantilever Beam, the arrangement of reinforcement of beam section is as shown in figure 14.
4) 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 16 is designed, floor both ends set link slot 17 with spar junction, and groove depth is with more than coupling nut and packing ring Height sum is advisable, and after to be connected, concordant with floor face after backfilling cement mortar in groove is standard;Every piece of floor and spar it is pre- Connecting bolt spacing c=200~400mm is close to, and no less than 3;The built-in fitting of prepared screw-bolt hole can use steel pipe, bellows, Bore is more than diameter of bolt 5mm, and the diameter of connecting bolt, which takes, the 1/6 of floor thickness t to be advisable, and as shown in Figure 10 and Figure 11, B is pre- Floor width processed, 18 be precast floor slab splicing seams.
5) for the reinforcement scheme of girder 8 of cast-in-place concrete design, simply supported beam checking computations is carried out to girder, considered on girder The configuration line style of post-stressed muscle, it is desirable to while meet bearing capacity and the deformation of simply supported beam;The prestressing force of girder is determined again Anchoring process, the presstressed reinforcing steel both ends of girder are anchored on shaft, if 13 in Fig. 4 are presstressed reinforcing steel anchor head, in the phase of shaft Answer position to answer prefabricated anchoring chain-wales, reserve presstressed reinforcing steel passage 9 when prefabricated.Girder should be corresponding in girder to secondary beam junction The small bracket of Position Design, such as the bracket 3 in Fig. 8.
The connection of girder both ends and post needs to consider the position of pretension bolt 6, connects at girder both ends and the design of post junction Connect prefabricated component, such as pretension bolt hole 7, shearing resistance keyway 41;Upper surface should set link slot with horizontal connecting plate joint, and groove sinks Depth is advisable by junction steel plate thickness i+40mm, to be easily pushed between bracket and horizontal connection steel plate during erection of main beam, Both ends steel bar stress should bend up in end and meet anchorage length requirement simultaneously.
6) span of prefabricated secondary beam 19 is determined, its arrangement of reinforcement and connector with girder, primary and secondary are redesigned by simply supported beam Also faying face shear key and seat is added to starch and be connected using pretension bolt between beam, general time beam end is connected using single bolt, As shown in Figure 8 and Figure 9, when deck-siding is larger, the bolt connection of one end two can also be used.
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 post net design and installation column, first with being directly connected between slurry anchor sleeve progress shell of column, then girder is hung near set Position is counted, is placed on the bracket of both sides, connects the junction steel plate of horizontal direction on bracket, beam-ends and post in post side connecting bolt It is connected together, and pre-tight stress is applied to bolt by design, forms basic frame structure system.
8) 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, after the secondary beam on girder is all installed in place, pre-tight stress is applied to spiral shell, forms floor beam lattice system.
9) precast floor slab is lifted, be held on secondary beam and the spar of both sides, and reserved by spar and floor end Connecting hole is linked together spar and floor with bolt.
10) correction after floor plates laying in place, will be measured, piece adjustment, treats that full floor or subregion floor are adjusted It is whole in place after, pre-tight stress is applied to floor and spar connecting bolt, forms Structural Floor System substantially.
11) presstressed reinforcing steel is worn in precast main beam, applies prestressing force at both ends, and be anchored on corresponding prefabricated post.
12) the gel-filled all connecting sewings of cement mortar are used, slip casting is carried out to bolt hole, presstressed reinforcing steel passage, is sealed institute There is the expose portion of connecting bolt and connector.
13) successively carry out post, beam, plate assembling, connect, be sealed until whole concrete structure members be completed.
The present embodiment processing is can refer to for the other structures such as corner post, side column and girder, balcony beam and balcony slab.
For this invention by concrete frame structure all using dry type connected mode, it is entirely prefabricated to realize all components, Job site no longer needs cast-in-place concrete;Connection between post and girder, girder and secondary beam, floor and beam uses pretension spiral shell Bolt additional seat slurry and shearing resistance keyway type, prefabricated and assembling mode are unified;The prefabricated and assembling of pillar employs slurry anchor sleeve and adds company The method that junction applies compressive pre-stress, compressive pre-stress are provided by pretension bolt and deformed bar.
The utility model is in order to solve in current assembled integral building structure there is still a need for cast-in-place part concrete component And connecting portion, it is still desirable to retain the technique and equipment of on-site concrete cast, still can produce building airborne dust, still can give The a series of problem such as Urban Transportation build-up of pressure;Make the pre- of prestressing technique in concrete structure and concrete structure Technology processed is combined, and realizes the full cast in place and precast construction of concrete frame structure, i.e. dry type concrete assembling integration.

Claims (7)

  1. A kind of 1. prefabricated PC concrete frame structure, it is characterised in that:Including prefabricated post and precast beam, the precast beam Including precast main beam and prefabricated secondary beam, the prefabricated post is connected with one end of the precast main beam and forms node area in junction Domain;
    The prefabricated post is divided into prefabricated upper prop and prefabricated lower prop in the node region, the prefabricated upper prop with it is described it is prefabricated under It is connected between post at node region by starching anchor sleeve with connection reinforcing bar, meanwhile, it is embedded with post and erects in the prefabricated post Into steel bar stress and the post, vertical applied force reinforcing bar is continuous at the node region;The prefabricated upper prop with precast main beam One end of connection is embedded with horizontal connection steel plate, and the prefabricated lower prop is prefabricated with first N in the one end being connected with precast main beam Leg;
    The precast main beam between the horizontal connection steel plate and the first bracket and passes through in the one end being connected with prefabricated post First pretension connecting bolt connects, and with being equipped with pre-embedded bolt hole on the first bracket, described first is close to the precast main beam in advance Connecting bolt sequentially passes through the pre-buried spiral shell on horizontal connection steel plate, the pre-embedded bolt hole in precast main beam and the first bracket from top to bottom Keyhole;Presstressed reinforcing steel passage is being reserved with along its length direction in the precast main beam, is being provided with the presstressed reinforcing steel passage Presstressed reinforcing steel, the both ends of presstressed reinforcing steel are anchored in prefabricated post;
    The prefabricated secondary beam is provided with link slot and pre-embedded bolt hole on the one end being connected with precast main beam, and the precast main beam exists The side being connected with prefabricated secondary beam is prefabricated with the second bracket, also is provided with link slot and pre-embedded bolt hole on second bracket, institute State prefabricated secondary beam to be located on second bracket and connect by the second pretension connecting bolt, the second pretension connecting bolt is certainly The link slot on prefabricated secondary beam, the pre-embedded bolt hole on prefabricated secondary beam, the pre-embedded bolt on the second bracket are sequentially passed through under above Link slot on hole and the second bracket.
  2. A kind of 2. prefabricated PC 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 One end of spar connection is provided with link slot and pre-embedded bolt hole, and link slot and pre-embedded bolt also are provided with the alar part of the spar Hole, the precast floor slab are located on the alar part of spar and connected by the 3rd pretension connecting bolt, and the 3rd pretension connects spiral shell Bolt sequentially passes through pre- on the alar part of the link slot on precast floor slab, the pre-embedded bolt hole on precast floor slab, spar from top to bottom Bury the link slot on the alar part of bolt hole and spar;The inside of the precast floor slab and precast beam is equipped with steel bar stress.
  3. A kind of 3. prefabricated PC concrete frame structure as claimed in claim 1 or 2, it is characterised in that:It is described prefabricated Upper prop reserves connection steel in the upper surface of the node region in the pre-buried slurry anchor sleeve in the lower surface of node region, prefabricated lower prop Muscle, the connection reinforcing bar insertion slurry anchor sleeve is interior and injects cement mortar.
  4. A kind of 4. prefabricated PC concrete frame structure as claimed in claim 1 or 2, it is characterised in that:The level Junction steel plate is additionally provided with end plate on one end in prefabricated upper prop.
  5. A kind of 5. prefabricated PC concrete frame structure as claimed in claim 1 or 2, it is characterised in that:In prefabricated post For prefabricated corner post when, prefabricated corner post post outer corners along its short transverse be reserved with post vertical prestressing bolt channels and The pre-stressed bolt groove of end, vertical prestressing bolt are located at through vertical prestressing bolt channels in post and its jointing In the pre-stressed bolt groove.
  6. A kind of 6. prefabricated PC 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 bracket, prefabricated secondary beam and the second bracket connect On the joint face connect, on the joint face of the alar part of precast floor slab and spar using shear key and sit the connected mode of slurry.
  7. A kind of 7. prefabricated PC concrete frame structure as claimed in claim 5, it is characterised in that:It is described vertically in advance The jointing of power bolt uses the long nut of outer-hexagonal.
CN201720332777.7U 2017-03-31 2017-03-31 A kind of prefabricated PC concrete frame structure Active CN206707005U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110374205A (en) * 2019-08-09 2019-10-25 昌大建筑科技有限公司 A kind of concrete assembles the construction method of dry construction linked system entirely

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110374205A (en) * 2019-08-09 2019-10-25 昌大建筑科技有限公司 A kind of concrete assembles the construction method of dry construction linked system entirely

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