CN112302231A - Prefabricated double-T-plate end connecting structure and construction method thereof - Google Patents
Prefabricated double-T-plate end connecting structure and construction method thereof Download PDFInfo
- Publication number
- CN112302231A CN112302231A CN202011081950.3A CN202011081950A CN112302231A CN 112302231 A CN112302231 A CN 112302231A CN 202011081950 A CN202011081950 A CN 202011081950A CN 112302231 A CN112302231 A CN 112302231A
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- plate
- prefabricated
- prefabricated double
- double
- angle steel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
Abstract
The invention discloses a prefabricated double-T plate end connecting structure and a construction method thereof, wherein the prefabricated double-T plate end connecting structure comprises an angle steel for connecting prefabricated beams and prefabricated double-T plate webs and a bridging connecting plate for connecting adjacent flange plates; round holes and horizontal long round holes are respectively formed in the plate surfaces on the two sides of the angle steel; the other end of the threaded connecting piece penetrating through the connecting holes on the two sides of the bridging connecting plate is positioned in a sleeve in the flange plate interlayer, the sleeve is anchored on a plate pre-embedded in the flange plate interlayer, and an anchoring steel bar pre-embedded in the flange plate interlayer is fixed on the plate; a first tubular body matched with the round hole of the angle steel is embedded in the precast beam; a second tubular body matched with the angle steel long round hole is embedded in the web plate interlayer; a first connecting bolt penetrates through the first tubular body, and two ends of the first connecting bolt respectively penetrate through the round holes of the angle steels on the corresponding sides and are connected through a threaded fastener; a second connecting bolt penetrates through the second tubular body, and two ends of the second connecting bolt respectively penetrate through the long round holes of the corresponding side angle steel and are connected through threaded fasteners.
Description
Technical Field
The invention belongs to the field of civil engineering assembly type buildings, and particularly relates to a prefabricated double-T-plate end connecting structure and a construction method thereof.
Background
The prefabricated double-T plate has the characteristics of reasonable section stress, large span, light weight, strong bearing capacity, high rigidity and obvious economic advantage, and is widely applied to large-span heavy-load building structures such as industrial plants, commercial centers, parking garages and the like. On the other hand, the connection between the end of the prefabricated double-T plate and the prefabricated structure has a great influence on the overall safety of the structure.
Currently, the prefabricated double-T plate usually directly rests on the bracket extending out of the prefabricated beam and is connected with the prefabricated beam through the steel bar lap joint at the top. The method needs to arrange the extending bracket on the precast beam, so that not only is the material wasted and the self weight of the structure increased, but also the connection safety is not high. Therefore, a safe and effective end connection method is needed to ensure the safety of the prefabricated double-T plate in the situations like earthquake.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art, and provide a prefabricated double-T-plate end connection structure which can ensure the safety and reliability of the connection of the prefabricated double-T-plate ends and avoid the risk of collapse under the action of an earthquake.
The technical problem to be solved can be implemented by the following technical scheme.
The utility model provides a prefabricated two T board tip connection structure for the connection of precast beam between adjacent tip of prefabricated two T boards and tip, its characterized in that includes:
the angle steel connecting piece is used for connecting the precast beam and the precast double-T plate web plate, a group of circular connecting holes are formed in the plate surface of one side, opposite to the precast beam, of the angle steel connecting piece, and a group of long circular connecting holes in the horizontal direction are formed in the plate surface of one side, opposite to the precast double-T plate web plate, of the angle steel connecting piece; and
the bridging connecting plate is used for connecting adjacent flange plates of the prefabricated double-T plate, and connecting holes convenient for bridging are formed in the plate surfaces of two sides of the bridging connecting plate; the other end of the threaded connecting piece penetrating through the connecting hole is positioned in a sleeve pre-buried in the prefabricated double-T-plate flange plate interlayer, the sleeve is anchored on a plate pre-buried in the prefabricated double-T-plate flange plate interlayer in the same way, and an anchoring reinforcing steel bar which is pre-buried in the prefabricated double-T-plate flange plate interlayer and extends horizontally and outwards is fixed on the plate relative to the prefabricated beam;
a group of first tubular bodies matched with the circular connecting holes of the angle steel connecting pieces are pre-embedded in the precast beams; a group of second tubular bodies matched with the long circular connecting holes of the angle steel connecting pieces are embedded in the interlayer of the prefabricated double-T plate web; a first connecting bolt penetrates through each first tubular body, and two ends of each first connecting bolt respectively penetrate through corresponding circular connecting holes of the angle steel connecting piece arranged on the corresponding side and are fixedly connected through threaded fasteners; and a second connecting bolt penetrates through each second tubular body, and two ends of each second connecting bolt respectively penetrate through corresponding oblong connecting holes of the angle steel connecting piece arranged on the corresponding side and are fixedly connected through threaded fasteners.
As a further improvement of the technical scheme, concrete layers are poured on the upper portions of the prefabricated double-T plate flange plates and the prefabricated beams, and the bridging connecting plates are embedded in the concrete layers.
As a further improvement of the technical scheme, the concrete layer is a micro-expansion fine stone concrete layer or an ultra-high performance concrete layer.
And as a further improvement of the technical scheme, the length of the anchoring steel bar relative to the extension of the plate is taken as an anchoring length L, and the L is not less than the lap joint length of the longitudinal tensioned steel bar binding lap joint in the structural design specification.
As one of the preferred embodiments of the present invention, the sleeve is processed with a coupling internal thread.
Still as the further improvement of this technical scheme, the sleeve with the plate welding is as an organic whole, the tip of anchor reinforcing bar welds on the plate.
Also as one of the preferred embodiments of the present invention, the first tubular body is a steel pipe, and the first connecting bolt is a high-strength tie bolt; the second tubular body is a steel pipe, and the second connecting bolt is a high-strength tie bolt.
Another technical problem to be solved by the present invention is to provide a construction method of the aforementioned prefabricated double-T plate end connection structure, including the following steps:
s1, manufacturing a prefabricated double-T plate in a factory, embedding an end connecting piece and an anchoring steel bar which are formed by the sleeve, namely a plate, in a flange plate of the prefabricated double-T plate, reserving a hole in a web plate of the prefabricated double-T plate, and embedding the second tubular body in advance; manufacturing a precast beam in a factory, reserving a hole and embedding the first tubular body in advance;
s2, connecting the prefabricated double-T plate web plate with the prefabricated beam through the first connecting bolt, the second connecting bolt, the angle steel connecting piece and the matched threaded fastener;
s3, connecting the bridging connection plate to the end part connection piece pre-buried at the end part of the prefabricated double-T plate through a threaded connection piece;
and S4, pouring a concrete laminated layer after the prefabricated double T-shaped plate and the upper part of the prefabricated beam are poured with a concrete layer.
As a further improvement of the method, the bridging connection plate is a group of uniformly arranged strip-shaped steel plates.
As a further improvement of the method, the arrangement position of the strip-shaped steel plate avoids the internal and/or external reinforcing steel bars of the precast beam; the preformed hole of the precast beam avoids the internal steel bar of the precast beam.
Compared with the prior art, the prefabricated double-T-plate end connecting structure and the construction method thereof adopting the technical scheme have the following beneficial effects:
the invention can avoid the arrangement of the outward extending brackets on the two sides of the precast beam, further save materials, reduce the self weight of the structure and form safe and reliable connection at the end parts of the precast double T-shaped plates. The technical scheme of the invention adopts dry connection, has simple structure and convenient construction, can ensure the safe and reliable connection of the end parts of the prefabricated double-T plate, can avoid the danger of collapse of the double-T plate under the action of earthquake, and is favorable for promoting the healthy and continuous development of the assembly type building.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a three-dimensional view of a prefabricated double T-plate end connection area provided by the present invention;
FIG. 2 is a cross-sectional view of a prefabricated double T panel end connection area provided by the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2 of the end connection region of a prefabricated double T panel provided by the present invention;
FIG. 4 is a schematic structural diagram of a connecting angle steel of a prefabricated double-T plate provided by the invention;
fig. 5 is a schematic structural diagram of an embedded connector of a prefabricated double-T plate provided by the invention.
In the figure: 1, connecting angle steel, 11, a tie bolt, 12, a long oval hole, 13, a pre-embedded steel pipe and 14, a circular hole;
2-pre-buried connector, 21-connecting steel plate, 22-pre-buried bolt sleeve, 23-anchoring steel bar, 24-anchoring steel plate and 25-fixing bolt;
3-prefabricating a double T plate, 31-a flange plate and 32-a web plate;
4-precast beam, 41-longitudinal steel bar, 42-transverse stirrup;
and 5, post-pouring concrete.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The invention is described in further detail below with reference to the figures and the specific embodiments. The objects, aspects and advantages of the present invention will become more apparent from the following description. It should be understood that the described embodiments are preferred embodiments of the invention, and not all embodiments.
With reference to fig. 1 to 5, the invention provides a prefabricated double-T plate end connection structure, which comprises a group of multiple connection steel plates 21 for bridging, wherein two ends of each connection steel plate are provided with positioning connection holes, and two sides of each connection steel plate 21 are respectively connected and fixed to internal thread holes of an embedded bolt sleeve 22 (namely, internal connection threads are formed inside the embedded bolt sleeve 22) through fastening of a fixing bolt 25.
The embedded connector 2 is embedded in the interlayer of the prefabricated double-T plate flange plate 31 and comprises a vertical embedded bolt sleeve 25, an anchoring steel plate 24 and an anchoring steel bar 23. The embedded connector 2 is a steel embedded part, and an anchoring steel plate 24 of the embedded connector 2 is connected with the embedded bolt sleeve 22 through welding and is connected with the anchoring steel bar 23 through double-sided lap welding. The anchoring length L of the anchoring bar 23 (i.e., the portion of the anchoring steel plate 24 extending outward in fig. 2) should not be less than the overlapping length of the longitudinal tensioned bar binding lap joint in the current concrete structure design specification.
The precast beam 4 is provided with longitudinal steel bars 41 and a transverse stirrup 42 at the upper part. The transverse embedded steel pipes 13 are embedded in the precast beam 4, and the tie bolts 11 penetrate through the extending parts on the two sides of the embedded steel pipes 13, pass through the circular holes 14 formed in the connecting angle steel 1 and the matched threaded connecting pieces, so that the connection between the precast beam and the end parts of the two precast double-T plates on the two sides in the figure 2 is realized.
One limb of the connecting angle steel 1 connected with the prefabricated double-T plate 3 is provided with a horizontal oblong hole 12, so that hinged connection is formed at the end part of the prefabricated double-T plate 3. The connecting angle steel 1 on two sides of the web plate 32 of the prefabricated double-T plate is connected and fixed through the oblong hole 12, the tie bolt 11 and the matched threaded connecting piece thereof. As shown in fig. 3, an embedded steel pipe 13 is also embedded in the interlayer of the web 32, and the tie bolt 11 penetrates through the embedded steel pipe 13.
Also, the tie bolt 11 is preferably a high-strength bolt.
When the design is deepened, the connecting steel plate 21 and the internal steel bars (41 and 42) of the precast beam 4 should be prevented from colliding, and the embedded steel pipe 13 and the precast double T-shaped plate 3 and the internal steel bars (41 and 42) of the precast beam 3 should be prevented from colliding.
Further, post-cast concrete 5 is poured on the flange plates 31 and the upper portions of the precast beams 4, and the material of the superposed layers is micro-expansion fine stone concrete or ultra-high performance concrete. After the pouring is finished, the connecting steel plates 21, the transverse stirrups 42 and the extending longitudinal steel bars 41 are covered, and concrete layers are buried.
The invention also provides a construction method for connecting the ends of the prefabricated double-T plate 3, which comprises the following steps:
s1, manufacturing a prefabricated double-T plate 3 in a factory, embedding the end connector 2 and the anchoring steel bar 23 in the flange plate, reserving a hole in the web plate and embedding the steel pipe 13 in advance; manufacturing a precast beam 4 in a factory, reserving holes and embedding a steel pipe 13 in advance;
s2, connecting the web plate of the prefabricated double-T plate 3 with the prefabricated beam through the tie bolts 11 and the connecting angle steel 1;
s3, connecting the connecting steel plate 21 to the embedded connector 2 at the end part of the prefabricated double-T plate 3 through the fixing bolt 25;
and S4, pouring micro-expansion fine aggregate concrete or ultra-high performance concrete on the superposed layer of the prefabricated double T-shaped plates 3 and the post-cast concrete 5 of the prefabricated beam 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and it is obvious that any person skilled in the art can easily conceive of alternative or modified embodiments based on the above embodiments and these should be covered by the present invention.
Claims (10)
1. The utility model provides a prefabricated two T board tip connection structure for the connection of precast beam between adjacent tip of prefabricated two T boards and tip, its characterized in that includes:
the angle steel connecting piece is used for connecting the precast beam and the precast double-T plate web plate, a group of circular connecting holes are formed in the plate surface of one side, opposite to the precast beam, of the angle steel connecting piece, and a group of long circular connecting holes in the horizontal direction are formed in the plate surface of one side, opposite to the precast double-T plate web plate, of the angle steel connecting piece; and
the bridging connecting plate is used for connecting adjacent flange plates of the prefabricated double-T plate, and connecting holes convenient for bridging are formed in the plate surfaces of two sides of the bridging connecting plate; the other end of the threaded connecting piece penetrating through the connecting hole is positioned in a sleeve pre-buried in the prefabricated double-T-plate flange plate interlayer, the sleeve is anchored on a plate pre-buried in the prefabricated double-T-plate flange plate interlayer in the same way, and an anchoring reinforcing steel bar which is pre-buried in the prefabricated double-T-plate flange plate interlayer and extends horizontally and outwards is fixed on the plate relative to the prefabricated beam;
a group of first tubular bodies matched with the circular connecting holes of the angle steel connecting pieces are pre-embedded in the precast beams; a group of second tubular bodies matched with the long circular connecting holes of the angle steel connecting pieces are embedded in the interlayer of the prefabricated double-T plate web; a first connecting bolt penetrates through each first tubular body, and two ends of each first connecting bolt respectively penetrate through corresponding circular connecting holes of the angle steel connecting piece arranged on the corresponding side and are fixedly connected through threaded fasteners; and a second connecting bolt penetrates through each second tubular body, and two ends of each second connecting bolt respectively penetrate through corresponding oblong connecting holes of the angle steel connecting piece arranged on the corresponding side and are fixedly connected through threaded fasteners.
2. The structure for connecting ends of prefabricated double-T panels as claimed in claim 1, wherein the flanges of the prefabricated double-T panels and the upper parts of the prefabricated beams are cast with a concrete layer, and the bridging connection plates are embedded in the concrete layer.
3. The prefabricated double-T-plate end connection structure of claim 2, wherein the concrete layer is a micro-expanded fine stone concrete layer or an ultra-high performance concrete layer.
4. The prefabricated double-T panel end connection structure of claim 1, wherein the length of said anchoring bar extending outward relative to said panel member is taken as anchoring length L, L being not less than the overlapping length of a longitudinal tensioned bar lashing lap joint in structural design specifications.
5. The prefabricated double-T plate end connection structure according to claim 1, wherein said sleeve is machined with an internal connection thread.
6. The prefabricated double-T panel end connection structure of claim 1, wherein said sleeve is welded integrally with said panel to which the ends of said anchoring bars are welded.
7. The prefabricated double-T plate end connection structure according to claim 1, wherein the first tubular body is a steel pipe, and the first connection bolt is a high-strength tie bolt; the second tubular body is a steel pipe, and the second connecting bolt is a high-strength tie bolt.
8. A construction method of the prefabricated double-T plate end connection structure of any one of claims 1 to 7, comprising the steps of:
s1, manufacturing a prefabricated double-T plate in a factory, embedding an end connecting piece and an anchoring steel bar which are composed of the sleeve and the plate in a flange plate, reserving a hole in a web plate of the prefabricated double-T plate, and embedding the second tubular body in advance; manufacturing a precast beam in a factory, reserving a hole and embedding the first tubular body in advance;
s2, connecting the prefabricated double-T plate web plate with the prefabricated beam through the first connecting bolt, the second connecting bolt, the angle steel connecting piece and the matched threaded fastener;
s3, connecting the bridging connection plate to the end part connection piece pre-buried at the end part of the prefabricated double-T plate through a threaded connection piece;
and S4, pouring a concrete laminated layer after the prefabricated double T-shaped plate and the upper part of the prefabricated beam are poured with a concrete layer.
9. The construction method according to claim 8, wherein the bridging connection plate is a set of uniformly arranged strip-shaped steel plates.
10. The construction method according to claim 9, wherein the strip steel plates are arranged to avoid the inner and/or outer steel bars of the precast beam; the preformed hole of the precast beam avoids the internal steel bar of the precast beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011081950.3A CN112302231A (en) | 2020-10-12 | 2020-10-12 | Prefabricated double-T-plate end connecting structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011081950.3A CN112302231A (en) | 2020-10-12 | 2020-10-12 | Prefabricated double-T-plate end connecting structure and construction method thereof |
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| CN112302231A true CN112302231A (en) | 2021-02-02 |
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| CN202011081950.3A Pending CN112302231A (en) | 2020-10-12 | 2020-10-12 | Prefabricated double-T-plate end connecting structure and construction method thereof |
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| CN204098215U (en) * | 2014-07-22 | 2015-01-14 | 中国航天建设集团有限公司 | A kind of novel prefabricated concrete building structures |
| US20160319541A1 (en) * | 2015-05-01 | 2016-11-03 | Elastic Potential, S.L. | Constructive system and method of construction thereof |
| CN205840382U (en) * | 2016-06-23 | 2016-12-28 | 深圳市汉沙杨景观规划设计有限公司 | Newly-increased floor and the attachment structure of former beam in a kind of building renovation |
| CN207846842U (en) * | 2017-12-20 | 2018-09-11 | 东南大学 | The prefabricated T plate cellular construction of post-tensioned prestressing segmented assembly and T plate structure |
| CN208415492U (en) * | 2018-07-06 | 2019-01-22 | 常嘉建设集团有限公司 | T-shaped plate assembling frame system |
| CN111119483A (en) * | 2020-01-20 | 2020-05-08 | 云南省设计院集团有限公司 | Assembled floor slab descending plate connecting structure and construction method |
| CN111456307A (en) * | 2020-04-17 | 2020-07-28 | 上海市建筑科学研究院有限公司 | Prestressed precast reinforced concrete hollow slab connecting structure and construction method thereof |
-
2020
- 2020-10-12 CN CN202011081950.3A patent/CN112302231A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204098215U (en) * | 2014-07-22 | 2015-01-14 | 中国航天建设集团有限公司 | A kind of novel prefabricated concrete building structures |
| US20160319541A1 (en) * | 2015-05-01 | 2016-11-03 | Elastic Potential, S.L. | Constructive system and method of construction thereof |
| CN205840382U (en) * | 2016-06-23 | 2016-12-28 | 深圳市汉沙杨景观规划设计有限公司 | Newly-increased floor and the attachment structure of former beam in a kind of building renovation |
| CN207846842U (en) * | 2017-12-20 | 2018-09-11 | 东南大学 | The prefabricated T plate cellular construction of post-tensioned prestressing segmented assembly and T plate structure |
| CN208415492U (en) * | 2018-07-06 | 2019-01-22 | 常嘉建设集团有限公司 | T-shaped plate assembling frame system |
| CN111119483A (en) * | 2020-01-20 | 2020-05-08 | 云南省设计院集团有限公司 | Assembled floor slab descending plate connecting structure and construction method |
| CN111456307A (en) * | 2020-04-17 | 2020-07-28 | 上海市建筑科学研究院有限公司 | Prestressed precast reinforced concrete hollow slab connecting structure and construction method thereof |
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Application publication date: 20210202 |