CN111749328A - Novel assembly type beam joint and construction form thereof - Google Patents
Novel assembly type beam joint and construction form thereof Download PDFInfo
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- CN111749328A CN111749328A CN202010734053.1A CN202010734053A CN111749328A CN 111749328 A CN111749328 A CN 111749328A CN 202010734053 A CN202010734053 A CN 202010734053A CN 111749328 A CN111749328 A CN 111749328A
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 18
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 10
- 238000004873 anchoring Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910021487 silica fume Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a novel assembly type beam joint and a construction form thereof, and the novel assembly type beam joint comprises a prefabricated main beam and cast-in-place ultrahigh-performance concrete, wherein bolt holes are reserved at the bottom and the inclined plane of the prefabricated main beam, the bolt holes are connected with an upper hole and a lower hole in the prefabricated main beam in a penetrating manner, the vertical surfaces of the two sides of the prefabricated main beam are both concave and convex surfaces, U-shaped reinforcing steel bars and overhanging reinforcing steel bars are reserved, the prefabricated main beam penetrates through 4 bolt holes in the vertical direction by using high-strength bolts, and is finally fixed on anchoring parts to be connected with each other on the beam surface, the U-shaped reinforcing steel bars and the overhanging reinforcing steel bars are reserved on the concave and convex surfaces in the horizontal direction, and finally the joints of the. This beam node adopts the connected mode that combines together, has compromise two kinds of connected modes's advantage simultaneously futilely, wet-type connection, has characteristics such as better wholeness, ductility and anti-seismic performance, has promoted the assembly rate relatively simultaneously, impels the development of assembled building high efficiency energy-conservation more.
Description
Technical Field
The invention relates to the technical field of fabricated beams, in particular to a novel fabricated beam joint and a construction form thereof.
Background
The construction and assembly mechanization degree of the fabricated building is high, the wet operations such as mud mixing, plastering, wall building and the like on site are greatly reduced, and the construction period is greatly shortened; can greatly reduce the discharge of construction waste and wastewater, and is beneficial to the healthy and green development of cities in China. Meanwhile, the building material has the remarkable advantages of resource saving, environmental protection, better performance indexes and the like, and is also the development trend of the modern building industry.
In actual engineering, the assembled building nodes are mainly connected in a wet mode, namely, main reinforcements and constructional reinforcements of a node area are all connected, the prefabricated parts are connected into a whole in the node area by adopting post-cast concrete and grouting materials, but the tensile strength of the post-cast area of the connection mode is low, so that the seismic performance is poor. However, dry type connections are also becoming a new trend, because they directly use prestress or profile steel connections between prefabricated components, they have better shock resistance and rigidity, but their ductility and restoring force performance are poorer.
In patent document CN109457801A, the beam ends on both sides are connected dry and wet through multiple bolts and grooves, so that the problems of poor ductility and deformation capability and low shock resistance of dry connection are solved, and the full-bolt dry connection is convenient to assemble and has high assembly rate. However, the interface connection means is too single, the integrity is poor, and multiple connection protection means are lacked.
The combination of the dry connection and the wet connection is rare, and the performance of the dry connection and the wet connection can simultaneously take the advantages of the dry connection and the wet connection into consideration, but the related technology is lacked.
Disclosure of Invention
In order to solve the problems, the invention provides a novel assembly type beam node, which adopts a connection mode combining dry connection and wet connection, simultaneously takes the advantages of the two connection modes into consideration, has the characteristics of better integrity, rigidity, ductility, seismic performance and the like, and simultaneously relatively improves the assembly rate, thereby promoting the development of more efficient and energy-saving assembly type buildings.
The technical scheme of the invention is as follows:
the utility model provides a novel assembled beam node, includes prefabricated girder and cast-in-place ultra high performance concrete, prefabricated girder all reserve at bottom of the beam portion and inclined plane department and have the bolt hole, the bolt hole is hole through connection about prefabricated girder is inside, prefabricated girder is the corrugated surface at the vertical face of both sides to reserve and have U-shaped reinforcing bar and overhanging reinforcing bar, prefabricated girder uses high strength bolt to run through 4 bolt holes on the vertical direction and at last is in roof beam fixed surface anchor assembly interconnect, uses promptly at the corrugated surface at the horizontal direction and reserves U-shaped reinforcing bar and overhanging steel bar connection, uses cast-in-place ultra high performance concrete to carry out the adhesive action at two girder seam departments, makes whole structure complete reliable.
It is further preferred that the two prefabricated main beam structures to be connected are of the same construction and are centrally symmetrical about a point inside.
Further preferably, the angle of the inclined plane of the main beam is
。
Preferably, the concave-convex surfaces are positioned on the upper vertical surface and the lower vertical surface of the prefabricated main beam, the planes are cut into a grid shape by using machinery, and the concave-convex relative depth is not less than 2 cm.
Preferably, the overhanging steel bars at the same connecting part of the two prefabricated main beams are not in the same horizontal plane and extend out in a staggered manner, and the overlapping distance of the aligned overhanging steel bars in the vertical direction does not exceed that of the whole overhanging steel bar 9
。
Preferably, the construction form of the novel assembly type beam joint is characterized by comprising the following steps:
firstly, prefabricating a main beam according to the drawing specification in a prefabricating factory, arranging overhanging steel bars 9, and uniformly embedding U-shaped steel bars 5 on two concave-convex surfaces 7 at a certain interval;
step two, conveying the girder prefabricated in the step one to a construction site, connecting two prefabricated girders by using high-strength bolts 4, and abutting the upper part and the lower part of the two prefabricated girders against the surfaces of the prefabricated girders by using anchoring parts;
and step three, arranging a template between the gaps of the two main beams to be connected, pouring UHPC, carrying out pouring construction while vibrating, and removing the template and maintaining to the expected strength after the initial setting of the template reaches one day.
Preferably, the anchoring piece in the second step is a tough thin sheet, so that the high-strength bolt cannot slip and cannot let out force on the surface of the main beam.
Further preferably, the anchoring piece is provided with threads on the surface and holes according to the high-strength bolt spacing.
Preferably, after the UHPC is poured in the third step, the gap between the two main beams is filled firmly and completely by using a concrete interface agent.
Preferably, the UHPC comprises the following components in percentage by weight: 43.1 to 45.2 percent of cement; 13.7 to 17.3 percent of fly ash; 9.6 to 12.4 percent of silica fume; 22.4 to 25.5 percent of quartz sand; 1.9 to 2.1 percent of high-performance water reducing agent; 4.51 to 4.92 percent of water; 1.5 to 2 percent of steel fiber (volume fraction).
Compared with the prior art, the invention has the following beneficial effects:
(1) the beam joint adopts a connection mode combining dry connection and wet connection, simultaneously takes the advantages of the two connection modes into consideration, has the characteristics of better integrity, rigidity, ductility, seismic performance and the like, relatively improves the assembly rate, and promotes the development of more efficient and energy-saving assembly type buildings.
(2) The post-cast area of the invention is UHPC, which has better bonding effect and higher strength than the traditional common concrete, so that the whole beam node is more integral, and the seismic resistance and the ductility are further enhanced.
(3) The precast beam is provided with the overhanging steel bars and the U-shaped steel bars, so that the connection of beam nodes is diversified, and the rear pouring area of the node between the two precast beams is more stable, thereby improving the tensile strength and the compressive strength of the whole node and having better promotion effect on the benign development of ductility.
(4) The angle adopted by the precast beam is
The inclined plane of has increased the lifting surface area of beam node, has changed the atress and the mode of transmission power of traditional beam node, greatly increased the anti-seismic performance and the ductility of whole node, improved the safe and reliable degree of whole building.
(5) The concave-convex surface of the precast beam makes full contact with the UHPC in the post-cast area, increases the bonding force of the node to a certain extent, ensures the whole structure to be stably and reliably connected, and improves the integrity of the building.
Drawings
1. FIG. 1 is a front elevation view of a beam node of the present invention;
2. FIG. 2 is a schematic view of a beam node of the present invention;
3. FIG. 3 is a schematic view of the concave-convex surface of a beam node according to the present invention;
4. FIG. 4 is a top view of the present invention at A;
in the figure: 1: prefabricating a main beam; 2: prefabricating a main beam; 3: a bolt hole; 4: a high-strength bolt; 5: u-shaped steel bars; 6: a bevel; 7: a concave-convex surface; 8: casting UHPC in situ; 9: overhanging reinforcing steel bars; 10: and (4) an anchoring piece.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by persons skilled in the art without making any inventive changes belong to the scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a novel assembled beam node, includes prefabricated girder 1, prefabricated girder 2 and cast-in-place ultra high performance concrete UHPC8, prefabricated girder 1 all reserves bolt hole 3 in bottom of the beam portion and 6 departments on inclined plane, and bolt hole 3 runs through in the hole about prefabricated girder 1 is inside, leaves the supporting use of anchor assembly 10 on the roof beam surface, and prefabricated girder 1 is concavo-convex 7 in the vertical face of both sides to reserve has U-shaped reinforcing bar 5 and overhanging reinforcing bar 9.
The two prefabricated main beams have the same structure and are in central symmetry about a certain point in the interior.
The utility model provides a construction form of novel assembled beam node which characterized in that includes following step:
firstly, prefabricating a main beam according to the drawing specification in a prefabricating factory, arranging overhanging steel bars 9, and uniformly embedding U-shaped steel bars 5 on two concave-convex surfaces 7 at a certain interval;
step two, conveying the girder prefabricated in the step one to a construction site, connecting two prefabricated girders by using high-strength bolts 4, and abutting the upper part and the lower part of the two prefabricated girders against the surfaces of the prefabricated girders by using anchoring parts;
and step three, arranging a template between the gaps of the two main beams to be connected, pouring UHPC8, performing pouring construction while vibrating, and removing the template and maintaining to the expected strength after the initial setting of the template reaches one day.
The anchoring piece in the second step is tough and thin, so that the high-strength bolt 4 cannot slip and leak on the surface of the main beam, and the surface is provided with threads, so that the anchoring piece is firmer and more reliable.
And after UHPC is poured in the third step, the gap between the two main beams is filled firmly and completely by using the concrete interface agent.
During the use, place prefabricated girder 1 and prefabricated girder 2 according to the position of bolt hole 3, use high strength bolt 4 to run through 4 continuous bolt hole interconnect later in the vertical direction, arrange the template at two girder seam departments at last, use cast-in-place ultra high performance concrete 8 to carry out the adhesive action, adopt the construction of pouring while vibrating. And after the pouring is finished, filling the gaps of the two main beams firmly by using a concrete interface agent. The construction mode of the beam joint has the advantages of two dry and wet connection modes, has the characteristics of better integrity, rigidity, ductility, seismic performance and the like, and relatively improves the assembly rate, so that the assembly type building is more efficient and energy-saving.
The UHPC comprises the following components in percentage by weight: 43.1 to 45.2 percent of cement; 13.7 to 17.3 percent of fly ash; 9.6 to 12.4 percent of silica fume; 22.4 to 25.5 percent of quartz sand; 1.9 to 2.1 percent of high-performance water reducing agent; 4.51 to 4.92 percent of water; 1.5 to 2 percent of steel fiber (volume fraction).
Although embodiments of the present invention have been described, those skilled in the art will appreciate that various changes, modifications and substitutions can be made in accordance with the present invention to develop the research into the prefabricated building nodes toward a more sophisticated and superior design.
Claims (8)
1. The utility model provides a novel assembled beam node, includes prefabricated girder (1), prefabricated girder (2) and cast-in-place ultra high performance concrete UHPC (8), its characterized in that: the prefabricated girder (1) all reserve at bottom of a beam and inclined plane (6) and have bolt hole (3), bolt hole (3) hole through connection about prefabricated girder (1) is inside, prefabricated girder (1) is concave-convex face (7) at the vertical face of both sides to reserve has U-shaped reinforcing bar (5) and overhanging reinforcing bar (9), prefabricated girder (1) and prefabricated girder (2) use high strength bolt (4) to run through 4 bolt hole (3) on the vertical direction and are fixed in anchor assembly (10) interconnect at the roof beam surface finally, use in the horizontal direction promptly at concave-convex face (7) and reserve U-shaped reinforcing bar (5) and overhanging reinforcing bar (9) and connect, use cast-in-place ultra high performance concrete (8) to carry out the adhesive action at two girder seams, make whole structure complete reliable.
2. The novel fabricated beam joint of claim 1, wherein: the prefabricated main beam (1) and the prefabricated main beam (2) have the same structure and are in central symmetry about a certain point in the prefabricated main beam.
3. The novel fabricated beam joint of claim 1, wherein: the angle of the inclined plane (6) is
。
4. The novel fabricated beam joint of claim 1, wherein: concave-convex surfaces (5) are positioned on the upper vertical surface and the lower vertical surface of the prefabricated main beam, a plane is cut into a grid shape by using machinery, and the concave-convex relative depth is not less than 2 cm.
5. The novel fabricated beam joint of claim 1, wherein: the overhanging reinforcing steel bars (9) at the same connecting part of the two prefabricated main beams are not positioned on the same horizontal plane and extend out in a staggered manner, and the overlapping distance of the aligned overhanging reinforcing steel bars in the vertical direction does not exceed that of the whole overhanging reinforcing steel bars (9)
。
6. The construction form of the novel assembled beam joint as claimed in claim 1, characterized by comprising the following steps:
firstly, prefabricating a main beam according to the drawing specification in a prefabricating factory, arranging overhanging reinforcing steel bars (9), and uniformly embedding U-shaped reinforcing steel bars (5) on two concave-convex surfaces (7) at a certain interval;
step two, the girder prefabricated in the step one is conveyed to a construction site, a high-strength bolt (4) is used for connecting two prefabricated girders, and the upper part and the lower part of the girder are tightly abutted to the surfaces of the prefabricated girders by using anchoring parts;
and step three, arranging a template between the gaps of the two main beams to be connected, pouring UHPC (8), performing pouring construction while vibrating, and removing the template and maintaining to the expected strength after the initial setting of the template reaches one day.
7. The construction form of the novel fabricated beam joint as claimed in claim 6, wherein: the anchoring pieces (10) in the second step are tough and thin sheets, so that the high-strength bolts (4) cannot slip and release the force on the surface of the main beam, and are provided with threads on the surface and holes according to the distance between the high-strength bolts (4)
8. The construction form of the novel fabricated beam joint as claimed in claim 6, wherein: and after the UHPC is poured in the third step, the gap between the two main beams is filled firmly and completely by using the concrete interface agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010734053.1A CN111749328A (en) | 2020-07-28 | 2020-07-28 | Novel assembly type beam joint and construction form thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010734053.1A CN111749328A (en) | 2020-07-28 | 2020-07-28 | Novel assembly type beam joint and construction form thereof |
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| Publication Number | Publication Date |
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| CN111749328A true CN111749328A (en) | 2020-10-09 |
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| CN202010734053.1A Pending CN111749328A (en) | 2020-07-28 | 2020-07-28 | Novel assembly type beam joint and construction form thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370108A (en) * | 2020-10-16 | 2022-04-19 | 万平华 | Method for building assembled concrete house by adopting novel connecting end component |
| CN115198701A (en) * | 2022-09-01 | 2022-10-18 | 江西省水利科学院 | Wet seam connection structure of assembled aqueduct |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299267A (en) * | 2008-06-10 | 2009-12-24 | Takenaka Komuten Co Ltd | Structure and method for joining precast concrete structural members together |
| CN103104040A (en) * | 2013-03-08 | 2013-05-15 | 郑州大学 | Assembled framework beam-column joint adopting vertical connection and construction method thereof |
| CN105804241A (en) * | 2016-03-22 | 2016-07-27 | 哈尔滨工业大学 | Single-layer prefabricated assembly type reinforced concrete beam-column joint |
| CN208486375U (en) * | 2018-05-31 | 2019-02-12 | 中铁建设集团有限公司 | A kind of assembled beam connecting node including UHTCC and X-shape low-yield reinforcing bar |
| CN109457801A (en) * | 2018-12-26 | 2019-03-12 | 长安大学 | A kind of connecting node and its construction method of prefabricated prestressed concrete beam |
| CN110130488A (en) * | 2019-06-17 | 2019-08-16 | 湘潭大学 | A kind of novel fabricated building node and its construction |
-
2020
- 2020-07-28 CN CN202010734053.1A patent/CN111749328A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299267A (en) * | 2008-06-10 | 2009-12-24 | Takenaka Komuten Co Ltd | Structure and method for joining precast concrete structural members together |
| CN103104040A (en) * | 2013-03-08 | 2013-05-15 | 郑州大学 | Assembled framework beam-column joint adopting vertical connection and construction method thereof |
| CN105804241A (en) * | 2016-03-22 | 2016-07-27 | 哈尔滨工业大学 | Single-layer prefabricated assembly type reinforced concrete beam-column joint |
| CN208486375U (en) * | 2018-05-31 | 2019-02-12 | 中铁建设集团有限公司 | A kind of assembled beam connecting node including UHTCC and X-shape low-yield reinforcing bar |
| CN109457801A (en) * | 2018-12-26 | 2019-03-12 | 长安大学 | A kind of connecting node and its construction method of prefabricated prestressed concrete beam |
| CN110130488A (en) * | 2019-06-17 | 2019-08-16 | 湘潭大学 | A kind of novel fabricated building node and its construction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370108A (en) * | 2020-10-16 | 2022-04-19 | 万平华 | Method for building assembled concrete house by adopting novel connecting end component |
| CN115198701A (en) * | 2022-09-01 | 2022-10-18 | 江西省水利科学院 | Wet seam connection structure of assembled aqueduct |
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