CN115233812A - Node of precast beam and precast slab and construction method thereof - Google Patents
Node of precast beam and precast slab and construction method thereof Download PDFInfo
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- CN115233812A CN115233812A CN202210782229.XA CN202210782229A CN115233812A CN 115233812 A CN115233812 A CN 115233812A CN 202210782229 A CN202210782229 A CN 202210782229A CN 115233812 A CN115233812 A CN 115233812A
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- precast slab
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 239000000126 substance Substances 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Classifications
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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
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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
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The application relates to a node of a precast beam and a precast slab and a construction method thereof, relating to the field of precast fabricated structures and comprising the precast beam and the precast slab, wherein the top of the precast beam is provided with a frame plate groove, and two side walls of the frame plate groove are fixedly connected with limit blocks; limiting grooves are formed in two sides of the middle of each prefabricated plate, the middle of each prefabricated plate is connected with the inner wall of each frame plate groove, and the prefabricated plates are erected on the prefabricated beams. This application has the middle part of precast slab to be located the top of precast beam, and porous flexible piece adds the back, carries out the filling of high strength self-leveling mortar again for stopper hardness reinforcing, and with precast beam and the inseparable being connected of precast slab as an organic whole, the effect that the joint strength of reinforcing precast beam and precast slab makeed.
Description
Technical Field
The application relates to the field of prefabricated structures, in particular to a node of a precast beam and a precast slab and a construction method thereof.
Background
The precast beam and the precast slab are two objects commonly used in the construction process at present, and the precast beam is a vertically arranged beam body and is mainly used for supporting the top of the whole building; the precast slabs are connected between different precast beams, and the precast slabs are mainly used for connecting the tops of a plurality of precast beams and assisting the precast beams to bear the weight of the top of a building together.
In the related art, chinese application No. 201621142333.9 discloses a node of a precast beam and a precast slab, comprising a precast beam and a precast slab; steps are symmetrically arranged on two sides of the precast beam along the long edge direction, and angle steel embedded parts with anchoring short ribs are symmetrically arranged at the corners of the two sides of the precast beam along the long edge direction on the top surface of the precast beam; one end of the precast slab along the long edge direction is arranged on the step, and a pore is formed in the precast slab from the end face to the length direction of the precast slab at the end arranged on the precast beam; deformed steel bars are inserted into the holes, and one ends of the deformed steel bars, which are close to the precast beams, are fixedly connected to the steel plates; the steel plate is fixedly connected with the angle iron embedded part. The construction method of the node comprises the following steps: 1. when the precast beam is precast, embedding angle steel embedding parts in the precast beam according to the installation positions of the precast beam and the precast beam; 2. hoisting the precast slabs after hoisting the precast beam, placing the precast slabs on the step surfaces of the steps of the precast beam, and adjusting the positions of the precast slabs to ensure the flatness of the hoisting finish surfaces of the precast slabs; 3. after the prefabricated plate is hoisted, welding steel plates and angle iron embedded parts on the prefabricated beam; 4. and after welding, grouting plate joints, pouring a cast-in-place layer, and ensuring the integrity of beam-slab connection.
In conclusion, the inventor thinks that two precast slabs are arranged on two sides of the precast beam, and the connection strength between the precast beam and the precast slab is higher, so that the earthquake resistance of the building structure formed by the building is poorer.
Disclosure of Invention
In order to improve the connection strength of the precast beam and the precast slab, the application provides a node of the precast beam and the precast slab and a construction method thereof.
In a first aspect, the present application provides a node of a precast beam and a precast slab, which adopts the following technical scheme:
a node of a precast beam and a precast slab comprises the precast beam and the precast slab, wherein a frame plate groove is formed in the top of the precast beam, and two side walls of the frame plate groove are fixedly connected with limiting blocks; limiting grooves are formed in two sides of the middle of the prefabricated plate, the middle of the prefabricated plate is connected with the inner wall of the frame plate groove, and the prefabricated plate is erected on the prefabricated beam.
By adopting the technical scheme, the connection mode of the precast slabs and the precast beams ensures that the middle parts of the precast slabs are positioned at the tops of the precast beams, and compared with the traditional precast slab and precast beam connection structure, the connection stability of the precast slabs and the precast beams is higher; the limiting grooves on the prefabricated plates are formed, so that when a constructor places the prefabricated plates on the prefabricated beam, the central parts of the prefabricated plates can be just placed in the limiting grooves by taking the positions of the limiting grooves as standards; and the prefabricated plate and the prefabricated beam are limited by the limiting block and the limiting groove, so that the connection stability of the prefabricated plate and the prefabricated beam is further improved, and the anti-seismic performance of the building structure formed by the building is poor.
Optionally, the limiting block comprises a porous flexible block and high-strength self-leveling mortar, and the porous flexible block is fixedly connected with the side wall of the frame plate groove; the high-strength self-leveling mortar is filled in the porous flexible block.
By adopting the technical scheme, due to the arrangement of the porous flexible blocks, a hanging method from top to bottom can be adopted when a constructor places the prefabricated plates on the prefabricated beams, and the porous flexible blocks are made of easily-deformable materials, so that the construction process of placing the prefabricated plates in the slab erecting grooves is not influenced; after the porous flexible blocks are embedded into the limiting grooves, high-strength self-leveling mortar is filled, so that the hardness of the limiting blocks is enhanced, the precast beams and the precast slabs are tightly connected into a whole, the connection strength of the precast beams and the precast slabs is enhanced, and the building structure made of the building is poor in anti-seismic performance.
Optionally, the side wall of the frame plate groove is uniformly provided with connecting through holes.
By adopting the technical scheme, the connection through holes are formed, so that when a constructor fills the high-strength self-leveling mortar, the high-strength self-leveling mortar can flow into the connection through holes, the high-strength self-leveling mortar flows into the precast beam and the surface of the precast slab, and the precast beam and the precast slab are connected into a whole.
Optionally, the connecting through hole is an arc-shaped hole.
By adopting the technical scheme, the arc-shaped holes are convenient for the liquid to flow, and the supporting force of the arc-shaped holes is equivalent to the local supporting force of the ball body, so that the supporting force of the arc-shaped holes is stronger, and the stability of the connection of the precast slabs and the precast beams is higher.
Optionally, the prefabricated plate bottom surface is connected with fixed strip group, and fixed strip group is including horizontal fixed strip and indulging the fixed strip, and horizontal fixed slot and indulge the fixed slot have been seted up to frame plate tank bottom surface, and horizontal fixed strip is located horizontal fixed slot, indulges the fixed strip and is located indulging the fixed slot.
By adopting the technical scheme, the fixing strip group comprises the transverse fixing strips and the longitudinal fixing strips in different directions, so that after the precast slabs are connected with the precast beam, the precast slabs are limited by the transverse fixing strips and the longitudinal fixing strips, the precast slabs are difficult to move in any direction in the precast grooves, the relative positions of the precast slabs and the precast beams are further fixed, and the connection stability of the precast beams and the precast slabs is higher.
Optionally, the long side direction of horizontal fixed strip is perpendicular with the long side direction of indulging the fixed strip, and horizontal fixed strip sets up to two sets of, indulges the fixed strip and sets up to a set of, and a set of horizontal fixed strip is located one side of indulging the fixed strip, and another group's horizontal fixed strip is located the opposite side of indulging the fixed strip.
Through adopting above-mentioned technical scheme, violently the fixed strip sets up with the position of indulging the fixed strip for the prefabricated plate is difficult to remove on the precast beam, has guaranteed that the stability that prefabricated plate and precast beam are connected is higher.
Optionally, the steel bars are inserted into the precast slabs and the precast beams.
By adopting the technical scheme, after the steel bars are inserted into the precast slabs and the precast beams, the precast slabs and the precast beams are further fixed in the vertical direction, so that the connection strength of the precast slabs and the precast beams is increased.
In a second aspect, the application provides a construction method for a node of a precast beam and a precast slab, which adopts the following technical scheme:
a construction method for a node of a precast beam and a precast slab comprises the following steps:
step 2, pouring high-strength self-leveling mortar into the porous flexible blocks and the connecting through holes;
and 4, after the precast beam and the precast slab are connected, dismantling the support frame.
By adopting the technical scheme, according to the construction method, the prefabricated plates are placed firstly, and the prefabricated plates can be hung from top to bottom due to the fact that the limiting blocks are the porous flexible blocks, so that the middle parts of the prefabricated plates are just positioned in the frame plate grooves; after the precast slab is placed, the porous flexible blocks are filled in the limiting grooves, then high-strength self-leveling mortar is filled, and the high-strength self-leveling mortar can enter the connecting through holes through the porous flexible blocks and flow out of the porous flexible blocks, so that the precast beam and the precast slab are connected into a whole by the high-strength self-leveling mortar; the building structure made by the building has poor anti-seismic performance.
Optionally, step 3 is followed by a step of implanting steel bars into the connecting portion of the precast beam and the precast slab.
By adopting the technical scheme, the step of implanting the steel bars is added, so that the precast beam and the precast slab are further fixed in the vertical direction.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the connection mode of the precast slabs and the precast beams ensures that the middle parts of the precast slabs are positioned at the tops of the precast beams, and compared with the traditional connection structure of the precast slabs and the precast beams, the connection stability of the precast slabs and the precast beams is higher; the prefabricated plate and the prefabricated beam are limited by the limiting block and the limiting groove, so that the connection stability of the prefabricated plate and the prefabricated beam is further improved, and the building structure formed by the building is poor in anti-seismic performance;
2. the arrangement of the porous flexible blocks enables construction personnel to adopt a hanging method from top to bottom when placing the precast slabs on the precast beams, and the porous flexible blocks are made of materials easy to deform, so that the construction process of placing the precast slabs in the slab erecting grooves is not influenced; after the porous flexible blocks are embedded into the limiting grooves, filling high-strength self-leveling mortar to enhance the hardness of the limiting blocks, and tightly connecting the precast beams and the precast slabs into a whole to enhance the connection strength of the precast beams and the precast slabs;
3. the connection through holes are formed, so that when the constructor fills the high-strength self-leveling mortar, the high-strength self-leveling mortar can flow into the connection through holes, the high-strength self-leveling mortar flows into the precast beam, and the precast beam and the precast slab are connected into a whole.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
FIG. 2 is a schematic diagram of an explosive structure intended to illustrate the present application;
fig. 3 is a schematic view intended to show the structure of a precast beam;
fig. 4 is a schematic view of a structure intended to show a prefabricated panel.
Description of the reference numerals: 1. prefabricating a beam; 11. a shelf slot; 111. a transverse fixing groove; 112. a vertical fixing groove; 12. a connecting through hole; 2. prefabricating a slab; 21. a limiting groove; 3. a limiting block; 31. a porous flexible block; 32. high-strength self-leveling mortar; 4. fixing the strip group; 41. a transverse fixing strip; 42. a longitudinal fixing strip; 5. reinforcing steel bars; 6. and (5) angle steel.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a node of a precast beam and a precast slab. Referring to fig. 1, a node of a precast beam 1 and a precast slab 2 comprises the precast beam 1, the precast slab 2 and a steel bar 5, wherein the middle of the precast slab 2 is placed at the top end of the precast beam 1 and is fixedly connected with the precast beam 1; and the steel bars 5 are vertically inserted into the precast slabs 2 and the precast beams 1 and are fixedly connected with the precast slabs 2 and the precast beams 1.
Referring to fig. 2 and 3, the precast beam 1 is a beam body perpendicular to the ground, the precast beam 1 may be a cuboid or a cylinder, the precast beam 1 in this embodiment is a cuboid, the top surface of the precast beam 1 is provided with a frame plate groove 11, and the frame plate groove 11 penetrates through two sides of the precast beam 1; a plurality of connecting through holes 12 have evenly been seted up to the 11 inner walls of shelf board groove, and connecting through hole 12 is the arc form, and connecting through hole 12's both ends all are the opening form.
Referring to fig. 3, both sides of the inner wall of the shelf plate groove 11 are provided with the limiting blocks 3, each limiting block 3 comprises a porous flexible block 31 and high-strength self-leveling mortar 32, the porous flexible blocks 31 in the embodiment are made of porous fiber sponge, the porous flexible blocks 31 are strip-shaped, the longitudinal sections of the porous flexible blocks can be triangular, trapezoidal, semicircular and other shapes with different side areas, the longitudinal sections of the porous flexible blocks 31 in the embodiment are trapezoidal, the porous flexible blocks 31 are arranged in plurality, the porous flexible blocks 31 are arranged on the inner wall of the shelf plate groove 11 in a close manner, and the porous flexible blocks 31 are fixed on the inner wall of the shelf plate groove 11 by using countersunk screws; high-strength self-leveling mortar 32 is filled in the porous flexible block 31 and the connecting through hole 12.
Referring to fig. 3, a horizontal fixing groove 111 and a vertical fixing groove 112 are formed in the bottom surface of the shelf plate groove 11, the horizontal fixing groove 111 may be a triangular prism, a trapezoidal column, or a semi-cylindrical column, and the horizontal fixing groove 111 of this embodiment is a triangular prism; the vertical fixing groove 112 may be triangular prism-shaped, trapezoidal column-shaped, or semi-cylindrical, and the vertical fixing groove 112 of this embodiment is triangular prism-shaped; the number of the horizontal fixing grooves 111 and the number of the vertical fixing grooves 112 may be two, in this embodiment, the number of the vertical fixing grooves 112 is equal, one horizontal fixing groove 111 is located on one side of the vertical fixing groove 112, and the other horizontal fixing groove 111 is located on the other side of the vertical fixing groove 112.
Referring to fig. 3 and 4, the prefabricated slab 2 is a rectangular slab or a cuboid, in this embodiment, the two sides of the middle of the prefabricated slab 2 are both provided with a limiting groove 21, and the porous flexible block 31 is filled in the limiting groove 21; a fixed strip group 4 is arranged on the bottom surface of the middle part of the prefabricated slab 2, the fixed strip group 4 comprises transverse fixed strips 41 and longitudinal fixed strips 42, the transverse fixed strips 41 can be in a triangular prism shape, a trapezoidal column shape or a semi-cylindrical shape, and the transverse fixed strips 41 in the embodiment are in a triangular prism shape; the longitudinal fixing strips 42 may be triangular prism, trapezoidal column or semi-cylindrical, and the longitudinal fixing strips 42 of this embodiment are triangular prism; the horizontal fixing strips 41 and the vertical fixing strips 42 can be both provided in a plurality of numbers, in this embodiment, the horizontal fixing strips 41 are provided in two numbers, the vertical fixing strips 42 are provided in a plurality of numbers in equal intervals, one of the horizontal fixing strips 41 is located on one side of the vertical fixing strip 42, the other horizontal fixing strip 41 is located on the other side of the vertical fixing strip 42, and the horizontal fixing strip 41 and the vertical fixing strip 42 are both integrally formed with the prefabricated slab 2.
Referring to fig. 2, a plurality of steel bars 5 may be provided, four steel bars 5 are provided in this embodiment, and the steel bars 5 are implanted into the precast slab 2 and the precast beam 1 by a chemical bar-planting method.
A construction method of a node of a precast beam 1 and a precast slab 2 comprises the following steps:
step 2, after the precast slab 2 is placed in the slab erecting groove 11, the porous flexible block 31 is just positioned in the limiting groove 21, and constructors pour the high-strength self-leveling mortar 32 into the porous flexible block 31 and the connecting through hole 12 and stand until the high-strength self-leveling mortar 32 is solidified;
step 4, after the precast beam 1 and the precast slab 2 are connected, dismantling the support frame;
and 5, implanting steel bars 5 into the connecting part of the precast beam 1 and the precast slab 2 by adopting a chemical bar planting method, and finishing the connection of the precast beam 1 and the precast slab 2.
The implementation principle of the node of the precast beam 1 and the precast slab 2 and the construction method thereof in the embodiment of the application is as follows: according to the opening position of the limiting groove 21, the middle part of the precast slab 2 is just placed in the frame slab groove 11; after the porous flexible block 31 is completely embedded into the limiting groove 21, filling high-strength self-leveling mortar 32 into the porous flexible block 31, enabling the high-strength self-leveling mortar 32 to flow into the connecting through hole 12 and the surface of the precast slab 2, connecting the precast slab 2 and the precast beam 1 into a whole, and after the high-strength self-leveling mortar 32 is condensed; further fixing the precast slabs 2 and the precast beams 1 by adopting angle steel 6 and expansion bolts; and finally, stably connecting the precast slabs 2 and the precast beams 1 together by adopting chemical steel bars.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. A node of precast beam and precast slab is characterized in that: the prefabricated beam structure comprises a prefabricated beam (1) and prefabricated plates (2), wherein a frame plate groove (11) is formed in the top of the prefabricated beam (1), and limiting blocks (3) are fixedly connected to two side walls of the frame plate groove (11); limiting grooves (21) are formed in two sides of the middle of each prefabricated plate (2), the middle of each prefabricated plate (2) is connected with the inner wall of the corresponding frame plate groove (11), and each prefabricated plate (2) is erected on the corresponding prefabricated beam (1).
2. A precast beam and precast slab joint according to claim 1, wherein: the limiting block (3) comprises a porous flexible block (31) and high-strength self-leveling mortar (32), and the porous flexible block (31) is fixedly connected with the side wall of the frame plate groove (11); the high-strength self-leveling mortar (32) is filled in the porous flexible block (31).
3. A precast beam and precast slab joint according to claim 1, wherein: and the side wall of the frame plate groove (11) is uniformly provided with connecting through holes (12).
4. A precast beam and precast slab joint according to claim 3, wherein: the connecting through hole (12) is an arc-shaped hole.
5. A precast beam and precast slab joint according to claim 1, wherein: prefabricated plate (2) bottom surface is connected with fixed strip group (4), and fixed strip group (4) have been seted up horizontal fixed slot (111) and have been indulged fixed slot (112) including horizontal fixed strip (41) with indulge fixed strip (42) frame plate groove (11) bottom surface, horizontal fixed strip (41) are located horizontal fixed slot (111), indulge fixed strip (42) and are located indulging fixed slot (112).
6. A precast beam and precast slab joint according to claim 5, wherein: the long side direction of violently fixed strip (41) is perpendicular with the long side direction of indulging fixed strip (42), and violently fixed strip (41) set up to two sets of, indulges fixed strip (42) and sets up to a set of, and a set of violently fixed strip (41) are located indulges one side of fixed strip (42), and another group violently fixed strip (41) are located indulges the opposite side of fixed strip (42).
7. A precast beam and precast slab joint according to claim 1, wherein: and reinforcing steel bars (5) are inserted into the precast slabs (2) and the precast beams (1).
8. A construction method of a node of a precast beam (1) and a precast slab (2) according to claim 1, characterized in that: the method comprises the following steps:
step 1, placing a precast slab (2) on a precast beam (1) according to the position of a limit groove (21) on the precast slab (2), and supporting two ends of the precast slab (2) by utilizing a supporting frame;
step 2, pouring mortar into the porous flexible block (31) and the connecting through hole (12);
step 3, fixedly connecting the precast beam (1) with the precast slab (2) by using angle steel (6) and expansion screws;
and 4, after the precast beam (1) and the precast slab (2) are connected, removing the support frame.
9. A construction method of a node of a precast beam (1) and a precast slab (2) according to claim 8, wherein: and step 3, implanting steel bars (5) into the connecting part of the precast beam (1) and the precast slab (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210782229.XA CN115233812B (en) | 2022-07-05 | 2022-07-05 | Node of precast beam and precast slab and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210782229.XA CN115233812B (en) | 2022-07-05 | 2022-07-05 | Node of precast beam and precast slab and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN115233812A true CN115233812A (en) | 2022-10-25 |
| CN115233812B CN115233812B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210782229.XA Active CN115233812B (en) | 2022-07-05 | 2022-07-05 | Node of precast beam and precast slab and construction method thereof |
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|---|---|---|---|---|
| DE60230144D1 (en) * | 2002-10-03 | 2009-01-15 | Tartuntamarkkinointi Oy | Concealed console connection |
| CN102720303A (en) * | 2012-06-15 | 2012-10-10 | 吴方伯 | Concrete composite beam |
| CN105839846A (en) * | 2016-03-22 | 2016-08-10 | 哈尔滨工业大学 | Prefabricated reinforced concrete composite beam |
| US20200141110A1 (en) * | 2017-06-22 | 2020-05-07 | China State Construction Engineering Cororation Limited | Prestressed assembled concrete frame-joint connecting structure and constructing method thereof |
| CN213508949U (en) * | 2020-06-29 | 2021-06-22 | 中铁第一勘察设计院集团有限公司 | Assembled platform canopy beam column node connection structure |
| CN214169432U (en) * | 2020-10-23 | 2021-09-10 | 中铁第四勘察设计院集团有限公司 | Connecting assembly |
-
2022
- 2022-07-05 CN CN202210782229.XA patent/CN115233812B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60230144D1 (en) * | 2002-10-03 | 2009-01-15 | Tartuntamarkkinointi Oy | Concealed console connection |
| CN102720303A (en) * | 2012-06-15 | 2012-10-10 | 吴方伯 | Concrete composite beam |
| CN105839846A (en) * | 2016-03-22 | 2016-08-10 | 哈尔滨工业大学 | Prefabricated reinforced concrete composite beam |
| US20200141110A1 (en) * | 2017-06-22 | 2020-05-07 | China State Construction Engineering Cororation Limited | Prestressed assembled concrete frame-joint connecting structure and constructing method thereof |
| CN213508949U (en) * | 2020-06-29 | 2021-06-22 | 中铁第一勘察设计院集团有限公司 | Assembled platform canopy beam column node connection structure |
| CN214169432U (en) * | 2020-10-23 | 2021-09-10 | 中铁第四勘察设计院集团有限公司 | Connecting assembly |
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| Publication number | Publication date |
|---|---|
| CN115233812B (en) | 2023-12-05 |
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