CN101736841B - Welding type slab crack joint for precast concrete floor system - Google Patents
Welding type slab crack joint for precast concrete floor system Download PDFInfo
- Publication number
- CN101736841B CN101736841B CN2009102633934A CN200910263393A CN101736841B CN 101736841 B CN101736841 B CN 101736841B CN 2009102633934 A CN2009102633934 A CN 2009102633934A CN 200910263393 A CN200910263393 A CN 200910263393A CN 101736841 B CN101736841 B CN 101736841B
- Authority
- CN
- China
- Prior art keywords
- plate
- panel
- slab
- built
- gripper shoe
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a welding type slab crack joint for a precast concrete floor system used in a building. The welding type slab crack joint comprises an X-shaped connection piece, a cover slab type connection piece, a support plate side overhanging platform and a supported plate side overhanging platform, wherein the X-shaped connection piece consists of anchor bars, panels and panel strips; the cover slab type connection piece consists of reinforcing steels arranged at the bottom of a slab, an embedded steel plate and a cover plate; the upper ends of the support plate and supported plate sides are provided with metal embedded pieces which consist of the anchor bars and the panels; the panels of the support plate is fixedly connected with the panels of the supported plate by the panel strips to form the X-shaped connection piece; the lower ends of the support plate and the supported plate sides are embedded with metal plates which are welded with the reinforcing steels at the bottom of a precast slab; the embedded metal plates of the support plate and the supported plate are fixedly connected by a metal cover plate to form a cover plate type connection piece; and after being overlapped with each other, the support plate side overhanging platform and the supported plate side overhanging platform are fixedly connected by the X-shaped connection piece at the top of the slab and the cover plate type connection piece at the bottom of the slab.
Description
Technical field
The present invention relates to precast assemble floor slab crack joint design and construction field, particularly a kind of welding type slab crack joint for precast concrete floor system.
Background technology
At present, the precast concrete floor system mainly contains assembled integral floor system and superposed type floor system, and promptly at precast plate upper berth steel mesh reinforcement, a kind of prefabricated building cover structure of back pouring concrete all belongs to " wet type " floor system.Precast plate in the assembled integral superstructure mostly is precast prestressed flat board; Precast plate is common in the superposed type superstructure precast hollow slab, groove type plate and sandwich slab etc.The existence of pouring concrete behind " wet type " superstructure, the shortcoming that has kept cast-in-place concrete building roof, need a large amount of wet trade and field operation, need a certain amount of template and support, operation complexity, quality are difficult for guaranteeing, long construction period, season and weather are big to programming and quality influence, and many to resource consumption, and be big to ambient influnence.
On the way that the plate seam connects, for the assembled integral floor system, the reinforcing bar that its precast plate side will be reserved certain-length links together plate side reinforcing bar by construction measure then, and the plate face will be done plucking and handle, and lays reinforced mesh, fluid concrete then.Though having, this kind way save to support and the template consumption, the characteristics that superstructure rigidity is big, and its complex process, industrialization degree is low, conducting oneself with dignity causes geological process bigger more greatly, unfavorable to the cost of structure.And for the superposed type superstructure, as the superimposed superstructure of precast hollow slab, its plate side is made Alveolus type usually, draws back certain distance between the adjacent floor, stitches between the teeth groove and the cast-in-situ concrete of precast plate face at plate.Investigation finds that the superposed type superstructure is comparatively general in the phenomenon of temperature action and normal service load effect lower plate seam back pouring concrete cracking, and it is relatively poor that Alveolus type plate seam connects shear-carrying capacity, superstructure will be difficult to guarantee in the elastic working stage under the geological process, the plate seam will take the lead in destroying, behind the plate seam reinforcement yielding, the superstructure globality reduces, and will produce bigger plane internal strain and then take place that superstructure is whole to be destroyed, and this phenomenon is comparatively common in violent earthquake repeatedly.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, proposed a kind of prefabricated assembled concrete superstructure slab crack joint.
The technical problem that the present invention further will solve provides a kind of full-prefabricated assembled concrete superstructure slab crack joint reliable, that structural performance is good, industrialization degree is high of constructing rationally, connect.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The supported plate that comprises reinforcing bar at the bottom of the gripper shoe of reinforcing bar at the bottom of built-in first plate and built-in second plate, it is characterized in that, choose platform outside on gripper shoe, being provided with, on supported plate, be provided with overhanging platform, describedly outer choose platform and overhanging platform overlaps mutually, be provided with the X-shaped connector in gripper shoe and zone, supported plate plate top, described X-shaped connector comprises and is embedded in first built-in fitting in the gripper shoe and is embedded in second built-in fitting in the supported plate, described first built-in fitting is made up of first dowel and first panel, and first dowel is connected with first panel, described second built-in fitting is made up of second dowel and second panel, and second dowel is connected with second panel, the surface of first panel adjacent with second panel is exposed at outside the gripper shoe, the surface of second panel adjacent with first panel is exposed at outside the supported plate, between described first panel and second panel, be provided with filler rod, and filler rod respectively with first panel, second panel is welded to connect.
Be provided with the cover-plate type connector in gripper shoe and territory, supported plate plate base area, described cover-plate type connector comprises the first built-in metal plate that is connected with reinforcing bar at the bottom of first plate, second built-in metal plate and the metal cover board that is connected with reinforcing bar at the bottom of second plate, and metal cover board is welded to connect with the first built-in metal plate, the second built-in metal plate respectively.
First panel is obliquely installed, and second panel is obliquely installed, and the upper shed of being tilted to constitute by first panel and second panel is greater than the under shed that is made of first panel and the inclination of second panel.
The length of filler rod is identical with the flat segments length of first dowel, and also identical with the flat segments length of second dowel.
Gripper shoe is precast concrete flat boards such as prefabricated concrete hollow slab or sandwich slab, and supported plate is precast concrete flat boards such as prefabricated concrete hollow slab or sandwich slab.
Compared with prior art, the present invention has following characteristics:
1) new type of plate seam of the present invention connects the bearing capacity and the normal functional performance that can improve superstructure.(1) adopt gripper shoe to choose platform outward, the structural form of the pre-overhanging platform of supported plate makes adjacent floor support mutually, and transmits the vertical shear under superstructure deadweight and the service load effect.Precast floor slab is a pre-stress floor, and prestressed precompressed effect meeting makes floor produce antiarch at the bottom of the plate, and because of reasons such as loss of prestress difference and making errors, the antiarch size of each piece precast plate is not quite similar.Each standard width of a room in an old-style house of superstructure is made up of the precast plate of some, and the difference of each piece floor antiarch can cause the out-of-flatness of floor, and the present invention constructs the planeness that can effectively eliminate floor antiarch difference and improve superstructure; Transmission and the interaction between the adjacent plate by vertical shear reduce a certain floor because of being subjected to the amount of deflection that bigger concentrated force produces.(2) pre-embedded steel slab adds the type of attachment that cover plate welds at the bottom of supported plate of employing and the gripper shoe, make the plate seam connect and to transmit transverse slat to stress, realized having the performance of bidirectional stress by the superstructure that unidirectional pre-stress floor is formed, making is subjected to force mode more reasonable, thereby improved the bearing capacity of superstructure, to the transmission of stress the superstructure mid-span deflection has obviously been reduced because of transverse slat simultaneously.This structure has crucial meaning to the large span plate floor.(3) the previous constructions form can effectively improve the globality and the rigidity of superstructure, thereby alleviates the dither effect of superstructure under the dynamic load effect, has improved human comfort.
2) new type of plate seam of the present invention connects stress performance in the plane that can improve superstructure.The type of attachment that adopts gripper shoe and supported plate upper limb metal embedded part to add the filler rod welding cooperates the lower edge pre-embedded steel slab to add the type of attachment of cover plate, can transmit shearing in the face of floor under wind load and geological process, increase rigidity and globality in the plane of superstructure, reduced the distortion of superstructure under horizontal loading.Can guarantee that superstructure is in the elastic working stage under design basis earthquake intensity geological process, avoid structural system design load bang path to change because of the destruction of superstructure, evaded the generation of the failure mode beyond the design object, as prefabricated superstructure common in the violent earthquake repeatedly because of rigidity in the face and the relatively poor failure mode that causes the internal strain of superstructure face to surpass the bearing length of floor of globality.
3) the present invention applies to the different parts that the plate seam connects according to X-shaped connector and cover-plate type connector mechanical property separately with both.Panel has certain gradient in the X-shaped connector, between two panels the slit up big and down small help the in place of filler rod and the welding; Filler rod length is identical with the flat segments length of dowel, can avoid dowel and panel under complicated load mode bending failure to take place and the reduction of lowering the connector shear-carrying capacity.This make simple structure, easy construction, and test shows that the manner has shear-carrying capacity and deformability in the higher face.The connected mode that pre-embedded steel slab adds panel has bending resistance outside the bigger plane when possessing certain shear-carrying capacity, the cover-plate type connector is arranged at the superstructure below, the precast floor slab transverse slat be can effectively transmit to stress, thereby the vertical bearing capacity and the rigidity of superstructure improved.Simultaneously, two connectors are used and can form a couple mechanism up and down, make up and down two connectors reach the tension and compression balance and interact, can avoid single connector the imagination of destroying too early to occur under the complicated applied force situation, the effect that two connectors are used is better than the effect that single connector uses alone.
4) above-mentioned structure can realize that structure manufacture all finishes in factory, installation process is " dry type " operation all, eliminated " wet trade ", reduced field operation, greatly reduced use amount, the working environment of improvement has been arranged, reduce working strength template, support and scaffold, improve component quality, advantage such as increase work efficiency also cuts down the consumption of energy simultaneously, alleviates social benefits such as the pollution of environment and influences.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an X-shaped connector structural representation;
Fig. 3 is the opening schematic diagram that X-shaped connector panel 5 and panel 6 form;
Fig. 4 is a cover-plate type connector structural representation.
The specific embodiment
With reference to the accompanying drawings, embodiment of the present invention being done one describes in detail:
Welding type slab crack joint for precast concrete floor system of the present invention, the supported plate 16 that comprises reinforcing bar 11 at the bottom of the gripper shoe 15 of reinforcing bar 10 at the bottom of built-in first plate and built-in second plate, choose platform 8 outside on gripper shoe 15, being provided with, on supported plate 16, be provided with overhanging platform 9, describedly outer choose platform 8 and overhanging platform 9 overlaps mutually, be provided with X-shaped connector 1 in gripper shoe 15 and zone, supported plate 16 plates top, described X-shaped connector 1 comprises and is embedded in first built-in fitting in the gripper shoe 15 and is embedded in second built-in fitting in the supported plate 16, described first built-in fitting is made up of first dowel 3 and first panel 5, and first dowel 3 is connected with first panel 5, described second built-in fitting is made up of second dowel 4 and second panel 6, and second dowel 4 is connected with second panel 6, between described first panel 5 and second panel 6, be provided with filler rod 7, and filler rod 7 respectively with first panel 5, second panel 6 is welded to connect.
Simultaneously, be provided with cover-plate type connector 2 in gripper shoe 15 and territory, supported plate 16 plate base area, described cover-plate type connector 2 comprises the first built-in metal plate 12 that is connected with reinforcing bar 10 at the bottom of first plate, the second built-in metal plate 13 and the metal cover board 14 that are connected with reinforcing bar 11 at the bottom of second plate, and metal cover board 14 is welded to connect with the first built-in metal plate 12, the second built-in metal plate 13 respectively.
Under vertical uniform load q, transmit shearing outside the plane by platform 7 and platform 8, under the connection of cover plate 14, transmit moment of flexure outside the plane by pre-embedded steel slab 12 at the bottom of the plate and pre-embedded steel slab 13; Frictional force by contact surface between X-shaped connector 1, cover-plate type connector 2 and platform 7 and the platform 8 under geological process is transmitted seismic shear.The present invention realizes transmitting between the precast floor slab the outer internal force in the plane and plane in the form that connects by dry type, and have structure rationally, connect reliably, field operation is few, speed of application is fast and anti-seismic performance is good characteristics.During concrete the installation, first hoisted in position gripper shoe, lifting supported plate in back is welded to connect built-in fitting with filler rod and cover plate then.
Claims (5)
1. welding type slab crack joint for precast concrete floor system, the supported plate (16) that comprises reinforcing bar (11) at the bottom of the gripper shoe (15) of reinforcing bar (10) at the bottom of built-in first plate and built-in second plate, it is characterized in that, choose platform (8) outside on gripper shoe (15), being provided with, on supported plate (16), be provided with overhanging platform (9), described outer platform (8) and the mutual overlap joint of overhanging platform (9) chosen, be provided with X-shaped connector (1) in gripper shoe (15) and zone, supported plate (16) plate top, described X-shaped connector (1) comprises and is embedded in first built-in fitting in the gripper shoe (15) and is embedded in second built-in fitting in the supported plate (16), described first built-in fitting is made up of first dowel (3) and first panel (5), and first dowel (3) is connected with first panel (5), described second built-in fitting is made up of second dowel (4) and second panel (6), and second dowel (4) is connected with second panel (6), the surface of first panel (5) adjacent with second panel (6) is exposed at outside the gripper shoe (15), the surface of second panel (6) adjacent with first panel (5) is exposed at outside the supported plate (16), between described first panel (5) and second panel (6), be provided with filler rod (7), and filler rod (7) respectively with first panel (5), second panel (6) is welded to connect.
2. welding type slab crack joint for precast concrete floor system according to claim 1, it is characterized in that, be provided with cover-plate type connector (2) in gripper shoe (15) and territory, supported plate (16) plate base area, described cover-plate type connector (2) comprises the first built-in metal plate (12) that is connected with reinforcing bar (10) at the bottom of first plate, the second built-in metal plate (13) and the metal cover board (14) that are connected with reinforcing bar (11) at the bottom of second plate, and metal cover board (14) is welded to connect with the first built-in metal plate (12), the second built-in metal plate (13) respectively.
3. welding type slab crack joint for precast concrete floor system according to claim 1 and 2, it is characterized in that, first panel (5) is obliquely installed, second panel (6) is obliquely installed, and the upper shed of being tilted to constitute by first panel (5) and second panel (6) (17) is greater than the under shed (18) that is tilted to constitute by first panel (5) and second panel (6).
4. welding type slab crack joint for precast concrete floor system according to claim 3 is characterized in that, the length of filler rod (7) is identical with the flat segments length of first dowel (3), and also identical with the flat segments length of second dowel (4).
5. welding type slab crack joint for precast concrete floor system according to claim 1 is characterized in that, gripper shoe (15) is prefabricated concrete hollow slab or sandwich slab, and supported plate (16) is prefabricated concrete hollow slab or sandwich slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102633934A CN101736841B (en) | 2009-12-18 | 2009-12-18 | Welding type slab crack joint for precast concrete floor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102633934A CN101736841B (en) | 2009-12-18 | 2009-12-18 | Welding type slab crack joint for precast concrete floor system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101736841A CN101736841A (en) | 2010-06-16 |
| CN101736841B true CN101736841B (en) | 2011-09-07 |
Family
ID=42460824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102633934A Expired - Fee Related CN101736841B (en) | 2009-12-18 | 2009-12-18 | Welding type slab crack joint for precast concrete floor system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101736841B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878871B (en) * | 2015-05-15 | 2017-07-14 | 河南工业大学 | Dry type connection precast slab, superstructure and its anti-seismic performance method for improving |
| CN107975176A (en) * | 2017-11-23 | 2018-05-01 | 哈尔滨工业大学 | Assembly concrete mat formation in advance building cover board H-shaped node connector and connection method |
| CN107905384A (en) * | 2017-11-23 | 2018-04-13 | 哈尔滨工业大学 | The bow formula dowel embedded part of assembly concrete superstructure plate face |
| CN107859222A (en) * | 2017-11-23 | 2018-03-30 | 哈尔滨工业大学 | A kind of assembly concrete superstructure plate face node and joint connecting method |
| CN109024908A (en) * | 2018-08-23 | 2018-12-18 | 青岛理工大学 | A kind of joint structure that sunk type prefabricated board is connect with H profile steel beam |
| CN109440992B (en) * | 2018-10-16 | 2020-09-25 | 北京工业大学 | Full-dry type prefabricated assembly concrete slab-column structure system |
| CN111877622B (en) * | 2020-07-06 | 2022-06-21 | 东南大学 | Full-assembly type concrete floor slab seam butterfly type connecting node |
-
2009
- 2009-12-18 CN CN2009102633934A patent/CN101736841B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101736841A (en) | 2010-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101761160B (en) | Totally-prefabricated assembling type reinforced concrete floor system | |
| CN101736841B (en) | Welding type slab crack joint for precast concrete floor system | |
| CN201574492U (en) | Welded precast concrete floor slab joint connection node | |
| CN103510639A (en) | Overlapped plate type shear wall with restorability and constructing method thereof | |
| CN103147529A (en) | Assembly type energy dissipation and seismic mitigation shear wall structure system | |
| CN107299698A (en) | A kind of assembled with concealed bracings can recover function Coupled Shear Wall structural system | |
| CN103711255B (en) | Truss concrete superposed beam | |
| CN104674657A (en) | Profiled steel sheet-UHP (ultra high performance) fiber reinforced concrete composite bridge deck | |
| CN203640084U (en) | Superimposed slab shear wall with restorable function | |
| CN109024221A (en) | A kind of Novel steel combined box beam and its application method | |
| CN201581528U (en) | Fully-prefabricated assembled concrete floor system | |
| CN103821260A (en) | Outer pasting steel plate-concrete combined shear wall with pull force supports | |
| CN211815592U (en) | Prefabricated assembled composite slab structure | |
| CN203334423U (en) | Rebar joint structure of prefabricated stacked balcony slab and main body | |
| CN204780559U (en) | Steel construction case roof beam and concrete bridge panel combination bridge | |
| CN205741871U (en) | There is the prestressed reinforced concrete box beam of double limb corrugated steel web | |
| CN208777758U (en) | A kind of steel roof truss lower boom reinforcing device | |
| CN217517829U (en) | Connecting structure for building prefabricated floor and roof board | |
| CN111733697A (en) | Prefabricated assembled composite slab structure | |
| CN203640155U (en) | Truss concrete superposed beam | |
| CN207453221U (en) | Dry type connecting box template Structural Floor System | |
| CN103938732A (en) | Combination joint of prefabricated concrete beam and rectangular concrete filled steel tubular column connected through pre-stressed steel bars and common steel bars | |
| CN103726668A (en) | Structure reinforcing method in externally-attached steel-encased assembly type PC frame mode | |
| CN203213347U (en) | Assembled energy dissipation and seismic mitigation shear wall structure system | |
| CN111088860A (en) | Three-dimensional shear-resistant reinforced concrete shear wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20131218 |