CN108978854A - One kind being bolted Precast Concrete Frame - Google Patents

One kind being bolted Precast Concrete Frame Download PDF

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Publication number
CN108978854A
CN108978854A CN201810810718.5A CN201810810718A CN108978854A CN 108978854 A CN108978854 A CN 108978854A CN 201810810718 A CN201810810718 A CN 201810810718A CN 108978854 A CN108978854 A CN 108978854A
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CN
China
Prior art keywords
precast concrete
concrete
precast
column
bolted
Prior art date
Application number
CN201810810718.5A
Other languages
Chinese (zh)
Inventor
薛伟辰
胡翔
Original Assignee
同济大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 同济大学 filed Critical 同济大学
Priority to CN201810810718.5A priority Critical patent/CN108978854A/en
Publication of CN108978854A publication Critical patent/CN108978854A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground

Abstract

It is according to the present invention to be bolted Precast Concrete Frame, including multiple precast concrete columns, multiple precast concrete beams, multiple precast slabs, pouring concrete overlapping layers afterwards, pouring concrete beam connecting node area and suspension column grout compartment after multiple, multiple precast concrete columns of bottom are vertically arranged on the ground by row respectively, precast concrete beam is arranged in two adjacent precast concrete columns of each row, precast slab is arranged on two precast concrete beams being oppositely arranged, pouring concrete overlapping layers is arranged on precast slab afterwards, pouring concrete beam connecting node area passes through installation beams of concrete connecting node area template afterwards, it carries out pouring connecting node area, multiple connectors of top precast concrete column are attached with multiple upper bolts of lower part precast concrete column by multiple nuts, suspension column grout compartment is to upper It is in the milk in gap between the precast concrete column and rear pouring concrete overlapping layers of layer.

Description

One kind being bolted Precast Concrete Frame
Technical field
The invention belongs to technical field of civil engineering, and in particular to one kind is bolted Precast Concrete Frame.
Background technique
Precast Concrete Frame speed of application is fast, it is high-quality, can largely save template and support, there is significant section Energy emission reduction feature, while can be realized large span, meet the requirement of user's large bay, is that one kind meets industrialized building development need The structure type asked.
The connection of prefabricated post generallys use sleeve grouting connection or slurry anchor in existing Precast Concrete Frame system Overlap joint connection.Sleeve grouting connection is reinforcing bar in the embedded sleeve barrel that the reserved steel bar of prefabricated lower prop is inserted into prefabricated upper prop It pours into high-intensitive non-shrinkage cement mortar to form entirety by grout hole between sleeve;Slurry anchor overlap joint connection refers to prefabricated Reserving hole beside upper prop longitudinal reinforcement, prefabricated lower prop overlap joint reinforcing bar insertion post-grouting closing, overlapping in range has tie hoop Play the role of confined concrete as reinforcing rib.Above two connection type is both needed to carry out pressure grouting at the scene, to prefabricated structure Part reinforcing bar position error and grouting equipment require height, easily occur the problems such as grouting leakiness in construction, to influence frame knot The overall performance of structure.
Summary of the invention
To solve the above-mentioned problems, one of the objects of the present invention is to provide both meet overall performance requirement, anti-seismic performance Precast Concrete Frame that is good, while meeting large space demand again, save material, convenient construction.
The present invention provides one kind to be bolted Precast Concrete Frame, has the feature that, including multiple pre- Concrete column processed, multiple precast concrete beams, multiple precast slabs, rear pouring concrete overlapping layers, it is multiple after pouring concrete Beam connecting node area and suspension column grout compartment, wherein multiple precast concrete columns of bottom are vertically arranged by row on ground respectively On face, each row is parallel to each other, the aligned in position of adjacent rows and adjacent precast concrete column, and precast concrete beam is arranged in each row In two adjacent precast concrete columns, precast slab is arranged on two precast concrete beams being oppositely arranged, after pour Concrete folding layer is arranged on precast slab, and rear pouring concrete beam connecting node area passes through installation beams of concrete connection section Point area's template carries out pouring connecting node area, and the upper end of precast concrete column has the multiple upper bolts for exposing concrete, under End has multiple connectors, and multiple precast concrete columns positioned at bottom upper layer are vertically arranged in the multiple prefabricated mixed of bottom respectively The top of solidifying earth pillar, pouring concrete overlapping layers after multiple upper bolts of lower part precast concrete column expose, top concrete Multiple connectors of earth pillar are attached with multiple upper bolts of lower part precast concrete column by multiple nuts, suspension column grouting Area is by installation suspension column grout compartment template, including the precast concrete column to upper layer and the gap between rear pouring concrete overlapping layers It is in the milk.
It is bolted in Precast Concrete Frame, is can also have the following features: wherein provided by the invention, The lower part of adjacent precast concrete beam is indulged muscle connection by overlap joint or is welded to connect, and upper part is indulged muscle and is set in overlapping layers.
In addition, being bolted in Precast Concrete Frame provided by the invention, can also have the following features: Wherein, connector is embedded in the bottom of precast concrete column in advance.
In addition, being bolted in Precast Concrete Frame provided by the invention, can also have the following features: Wherein, the upper bolt of the precast concrete column of bottom and the connector for the precast concrete column for being located at the bottom upper layer pass through phase Matched nut is attached.
In addition, being bolted in Precast Concrete Frame provided by the invention, can also have the following features: Wherein, the gap between the precast concrete column bottom to upper layer and rear pouring concrete overlapping layers is irrigated UHPC (superelevation Energy concrete, Ultra-High Performance Concrete) form suspension column UHPC grouting region.
In addition, being bolted in Precast Concrete Frame provided by the invention, which is characterized in that further include setting Multiple lateral ties, more longitudinal reinforcements, more overlap joint reinforcing bars in precast concrete column, more longitudinal reinforcements are set in rectangle It sets, overlap joint reinforcing bar shown in more is separately positioned in the rectangle that longitudinal reinforcement surrounds, and multiple lateral ties are arranged in longitudinal reinforcement Exterior circumferential carries out binding connection.
In addition, being bolted in Precast Concrete Frame provided by the invention, can also have the following features: Wherein, lateral tie spacing is less than 150mm.
In addition, being bolted in Precast Concrete Frame provided by the invention, can also have the following features: Wherein, connector is arranged in the lower end of precast concrete column and is connected respectively with overlap joint reinforcing bar.
In addition, being bolted in Precast Concrete Frame provided by the invention, which is characterized in that further include and phase The connected multiple u tie muscle of two adjacent connectors.
The action and effect of invention
In bolt connection of the invention, innovatively it is connected by screw bolts device and carries out prefabricated mix The connection of solidifying earth pillar, top precast concrete column are bolted device and connect with understructure.Precast concrete column and bottom High strength grout is perfused in seam and bolt indentation between component.
In addition, precast concrete frame simplicity adjustment precast concrete column verticality proposed by the present invention and height, are not necessarily to Cushion block support, positioning accuracy request is low (tolerance ± 5mm), and extra support is not necessarily to when installing in place, has speed of application fast, environment It pollutes small, saves the duration and the advantages that template, meet the demand of housing industrialization.
Further, Precast Concrete Frame proposed by the present invention shows to have good whole by experimental study Body and anti-seismic performance.
Further, Precast Concrete Frame experimental study proposed by the present invention shows not only with higher hold Power is carried, while also there is preferable ductility and deformability.
Bolt connection lifting positioning of the invention is easy, and grouting is convenient, has outstanding hold Loading capability and ductility are applicable to House with Big Room Openning, public building and industrial premises etc., meet China's green building and industrialization The development strategy of building has very wide application prospect.
Detailed description of the invention
Fig. 1 is that a Pin is bolted two layers liang of Precast Concrete Frame across schematic diagram in the embodiment of the present invention;
Fig. 2 is precast concrete column substructure schematic diagram in the embodiment of the present invention;
Fig. 3 is precast concrete column schematic cross-section in the embodiment of the present invention;
Fig. 4 is connector and overlap joint reinforcing bar connection schematic diagram in the embodiment of the present invention;
Fig. 5 is connector and spacer bar connection schematic diagram in the embodiment of the present invention;
Fig. 6 is connecting node area schematic diagram in precast concrete frame in the embodiment of the present invention;
Fig. 7 is precast concrete beam schematic cross-section in the embodiment of the present invention;And
Fig. 8 is suspension column grout compartment domain schematic diagram in the embodiment of the present invention.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention Example combination attached drawing is applied to be specifically addressed bolt connection of the invention.
Embodiment one
As shown in Figure 1, be bolted Precast Concrete Frame include multiple precast concrete columns 2, it is multiple prefabricated mixed Solidifying soil beam 1, multiple precast slabs 4, rear pouring concrete overlapping layers 5, multiple rear pouring concrete beam connecting node areas 6 and column Foot grout compartment 9.
Multiple precast concrete columns 2 of bottom distribute as net shape, and multiple precast concrete columns 2 are vertically set by row respectively It sets on the ground, each row is parallel to each other, and the position of adjacent rows and adjacent precast concrete column 2 is alignment.
As shown in Figure 2,3, precast concrete column 2 includes 4 connectors, 7,4 u tie muscle 10, multiple lateral ties 11,4 12,8 overlap joint additional hoopings 15 of spacer bar 14,2 of reinforcing bar 13,4 of root longitudinal reinforcement.
In embodiment, precast concrete column 2 is be in the shape of a square cylinder, and section is in rectangle.4 longitudinal reinforcements 12 are arranged in rectangle, and 8 Root overlap joint reinforcing bar 13 is separately positioned in the rectangle that 4 longitudinal reinforcements 12 surround, every 2 overlap joint reinforcing bars 13 and a longitudinal reinforcement 12 are respectively connected with, and reinforcing bar 13 is overlapped in embodiment and longitudinal reinforcement 12 is overlap joint connection, multiple lateral ties 11 are arranged in longitudinal direction 12 exterior circumferential of reinforcing bar carries out binding connection, and 4 connectors 7 are arranged in the lower end of precast concrete column 2 and overlap respectively with 8 Reinforcing bar 13 is connected.
In embodiment, the bracket L-shaped including fixed plate and section of connector 7, fixed plate has for allowing bolt to pass through Through-hole, the lower end of bracket is fixed at, as shown in figure 4, the upper end of bracket is fixedly connected with 2 overlap joint reinforcing bars 13.
4 spacer bars 14 are fixedly connected with 4 connectors 7 respectively, and spacer bar 14 is L-shaped, as shown in figure 5, L shape is short The one end on side is connected with connector 7, positioned at the outside of fixed plate, L shape long side be arranged in precast concrete column 2 and with longitudinal steel Muscle 12 is parallel.
4 u tie muscle 10 are fixedly connected with 4 connectors 7 respectively and are arranged in precast concrete column 2, each u tie The both sides of muscle 10 are connected with two adjacent connectors 7 respectively and the opening of U-shaped is towards the upper end of precast concrete column 2.
2 additional hoopings 15 are separately positioned on 2 top and bottom of precast concrete column and are located at the outside of lateral tie 11.
In the upper end of precast concrete column 2,4 longitudinal reinforcements 12 expose concrete, in 4 longitudinal steel for exposing concrete 12 top of muscle is provided with screw thread.
Two adjacent precast concrete columns are arranged in using overlapping beam construction, precast concrete beam 1 in precast concrete beam 1 On 2, in the upper end of a precast concrete column 2, the setting of precast slab 4 exists the lapping ends of two precast concrete beams 1 On two precast concrete beams 1 being oppositely arranged.
As shown in fig. 6, the upper end junction of two precast concrete beams 1-1,1-2 and bottom precast concrete column 2-1 are logical Later pouring concrete joint cores 6 connect, as shown in fig. 7, adjacent precast concrete beam 1 lower part indulge muscle by overlap joint or It is welded to connect, the upper longitudinal bar of precast concrete beam 1 is set to rear pouring concrete overlapping layers 5 and scene binding.To joint core The longitudinal reinforcement of 6 beam bottom of area is welded, and joint cores stirrup is then bound, and binds back longitudinal reinforcement, binds overlapping layers Interior distribution bar.6 template of joint cores, cast in situs joint cores 6 and rear pouring concrete overlapping layers 5 are installed, bottom 4 longitudinal reinforcements 12 of the upper end precast concrete column 2-1 expose joint cores 6 and rear pouring concrete overlapping layers 5.
After 6 concrete strength reaches the 50% of design strength after joint cores, the precast concrete on lifting top is carried out Column 2-2 operation, installs 4 on the threaded longitudinal reinforcement 12 of tool of the upper end precast concrete column 2-1 of bottom first respectively The precast concrete column 2-2 on top is vertically arranged in the top of the precast concrete column 2-1 of bottom, by top by lower nuts Precast concrete column 2-2 connector 7 pass through bottom precast concrete column 2-1 longitudinal reinforcement 12 and connect with lower nuts Then touching is installed upper nut in longitudinal reinforcement 12 and is attached, the precast concrete column 2-2 on top and the concrete of bottom After earth pillar 2-1 forms preliminary connection by longitudinal reinforcement 12, connector 7 and nut, to the precast concrete column 2-2 on top with The suspension column region between rear pouring concrete overlapping layers 5 on joint cores 6 is by installation suspension column grout compartment template, to upper layer The recess in gap, connector 7 between precast concrete column 2-2 and rear pouring concrete overlapping layers 5 is in the milk, and UHPC is perfused (ultra-high performance concrete, Ultra-High Performance Concrete) forms the grout compartment suspension column UHPC as shown in Figure 8 Domain 9.In embodiment, the One-sided Widths a of the width beyond precast concrete column 2-2 pillar in UHPC grouting region 9 is 50mm, grouting Height h is determined by the height and seat pulp layer height of Bolt Connector 7.It repeats operation, until completing all concretes Native frame structure.
The production method for being bolted Precast Concrete Frame, includes the following steps:
Step 1, precast concrete column, precast concrete beam, precast slab are completed in precast concrete factory Production, and by each component number, transport to construction site;
Step 2, more precast concrete columns of adjacent pillars net are installed, precast concrete column and basis are connected by screw bolts device Connection, and at abutment joint and bolt indentation is in the milk;
Step 3, at the position for completing precast concrete column installation start that precast concrete beam, precast concrete roof beam structure are installed It is located in precast concrete column and support, and by precast concrete beam level-off, with precast concrete column centering;
Step 4, place precast slab, by prefabricated board be shelved on precast beam and support on, control prefabricated board with it is prefabricated The lap of splice of beam, prefabricated board overall dimensions;
Step 5, the longitudinal reinforcement of the joint cores beam bottom of adjacent precast beam is welded, then binds node core Heart district stirrup binds back longitudinal reinforcement, binds distribution bar in overlapping layers;
Step 6, joint cores template, cast in situs joint cores and overlapping layers are installed;
Step 7, after after joint cores, concrete strength reaches the 50% of design strength, hoisting prefabricated upper prop passes through spiral shell Bolt connector forms preliminary connection, then between upper layer precast concrete column and bottom member seam crossing and bolt indentation into Row grouting;
Step 8, repeat the above steps 2- step 7, completes the construction of entire pre-fabricated one.
Embodiment two
The present embodiment is identical as one other structures of embodiment, is only replaced in embodiment one using pre-buried high-strength screw rod The end of the longitudinal reinforcement 12 of 4 exposing concrete.
High-strength screw rod top area is provided with external screw thread.
The action and effect of embodiment
In the bolt connection of the present embodiment, it is prefabricated to be innovatively connected by screw bolts device progress The connection of concrete column, top precast concrete column are bolted device and connect with understructure.Precast concrete column and bottom High strength grout is perfused in seam and bolt indentation between portion's component.
In addition, precast concrete frame simplicity adjustment precast concrete column verticality and height that the present embodiment proposes, nothing Cushion block is needed to support, positioning accuracy request is low (tolerance ± 5mm), and extra support is not necessarily to when installing in place, has speed of application fast, ring The advantages that border pollution is small, saves duration and template, meets the demand of housing industrialization.
Further, the Precast Concrete Frame that the present embodiment proposes shows to have good by experimental study Globality and anti-seismic performance.
Further, the Precast Concrete Frame experimental study that the present embodiment proposes, shows not only with higher Bearing capacity, while also there is preferable ductility and deformability.
The bolt connection lifting positioning of the present embodiment is easy, and grouting is convenient, has outstanding Bearing capacity and ductility are applicable to House with Big Room Openning, public building and industrial premises etc., meet China's green building and industry Change the development strategy of building, there is very wide application prospect.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.

Claims (9)

1. one kind is bolted Precast Concrete Frame characterized by comprising
It is multiple precast concrete columns, multiple precast concrete beams, multiple precast slabs, rear pouring concrete overlapping layers, multiple Pouring concrete beam connecting node area and suspension column grout compartment afterwards,
Wherein, multiple precast concrete columns of bottom are vertically arranged on the ground by row respectively, and each row is parallel to each other, phase The aligned in position of adjacent rows and the adjacent precast concrete column,
The precast concrete beam is arranged in two adjacent precast concrete columns of each row, and the precast slab is set It sets on two precast concrete beams being oppositely arranged,
Pouring concrete overlapping layers is arranged on the precast slab after described,
Pouring concrete beam connecting node area carries out pouring connecting node by installation beams of concrete connecting node area template after described Area,
The upper end of the precast concrete column has the multiple upper bolts for exposing concrete, and lower end has multiple connectors,
Multiple precast concrete columns positioned at bottom upper layer are vertically arranged in multiple precast concretes of bottom respectively The top of column,
Multiple upper bolts of precast concrete column described in lower part expose it is described after pouring concrete overlapping layers, it is pre- described in top Multiple upper bolts of precast concrete column described in multiple connectors of concrete column processed and lower part pass through multiple spiral shells Mother is attached,
The suspension column grout compartment by installation suspension column grout compartment template, including to upper layer the precast concrete column and it is described after It is in the milk in gap between pouring concrete overlapping layers.
2. according to claim 1 be bolted Precast Concrete Frame, it is characterised in that:
Wherein, the lower part of the adjacent precast concrete beam is indulged muscle connection by overlap joint or is welded to connect, and upper part is indulged muscle and set It is placed in the overlapping layers.
3. according to claim 1 be bolted Precast Concrete Frame, it is characterised in that:
Wherein, the connector is embedded in the bottom of the precast concrete column in advance.
4. according to claim 1 be bolted Precast Concrete Frame, it is characterised in that:
Wherein, the upper bolt of the precast concrete column of bottom and the precast concrete column positioned at the bottom upper layer The connector passes through the nut to match and is attached.
5. according to claim 1 be bolted Precast Concrete Frame, it is characterised in that:
Wherein, the gap between the precast concrete column bottom to upper layer and the rear pouring concrete overlapping layers is irrigated UHPC (ultra-high performance concrete, Ultra-High Performance Concrete) forms suspension column UHPC grouting region.
6. according to claim 1 be bolted Precast Concrete Frame, which is characterized in that further include:
Multiple lateral ties, more longitudinal reinforcements, more overlap joint reinforcing bars in the precast concrete column are set,
The more longitudinal reinforcements are arranged in rectangle, and overlap joint reinforcing bar shown in more is separately positioned on the square that the longitudinal reinforcement surrounds In shape, multiple lateral ties, which are arranged, carries out binding connection in the longitudinal reinforcement exterior circumferential.
7. according to claim 6 be bolted Precast Concrete Frame, it is characterised in that:
Wherein, the lateral tie spacing is less than 150mm.
8. according to claim 6 be bolted Precast Concrete Frame, it is characterised in that:
Wherein, the connector is arranged in the lower end of the precast concrete column and is connected respectively with the overlap joint reinforcing bar.
9. according to claim 1 be bolted Precast Concrete Frame, which is characterized in that further include:
The multiple u tie muscle being connected with two adjacent connectors.
CN201810810718.5A 2018-07-23 2018-07-23 One kind being bolted Precast Concrete Frame CN108978854A (en)

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Application Number Priority Date Filing Date Title
CN201810810718.5A CN108978854A (en) 2018-07-23 2018-07-23 One kind being bolted Precast Concrete Frame

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