CN209975738U

CN209975738U - Assembled beam and plate connecting node

Info

Publication number: CN209975738U
Application number: CN201920219435.3U
Authority: CN
Inventors: 张延年; 孙亚东; 吴献; 王颖光
Original assignee: Shenyang Jianzhu University
Current assignee: Shenyang Jianzhu University
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2020-01-21
Anticipated expiration: 2029-02-21

Abstract

The utility model relates to an assembled roof beam and board connected node belongs to building technical field. The reinforced concrete beam comprises a precast concrete beam and a precast concrete plate which are connected with each other, wherein two ends of the precast concrete plate are in a stepped shape, one end of the precast concrete plate is an upper step, the other end of the precast concrete plate is a lower step, the end part of a stress bar in the precast concrete plate is processed into a round shape, and the stress bar in the precast concrete plate is arranged in a vertically staggered manner; u-shaped connecting steel bars are pre-embedded in the precast concrete beams; during the installation of the connection mode, the precast concrete plate is hoisted, the reserved holes in the lower step and the upper step penetrate through the pre-buried connecting steel bars, and grouting is performed in the reserved holes, so that the precast concrete beam is connected with the precast concrete plate. The utility model discloses construction convenience, construction speed are fast, economic effect is good, and the cost is lower, simple structure, and the transportation is convenient, and is not fragile in the transportation, avoids wearing the muscle in the work progress, pollution abatement.

Description

Assembled beam and plate connecting node

Technical Field

The utility model belongs to the technical field of the building, especially, relate to an assembled roof beam and board connected node.

Background

The prefabricated concrete building is a building with a concrete structure designed and built in a field assembly mode, wherein the prefabricated concrete components are mainly produced in a factory. The assembly method of the member generally comprises the steps of on-site post-pouring laminated concrete, steel bar anchoring post-pouring concrete connection and the like, and the steel bar connection can adopt the methods of sleeve grouting connection, welding, mechanical connection, reserved hole lap joint and the like. In the 80 s of the 20 th century, the prefabricated large-plate house popular in China has many hidden dangers and defects influencing the safety and normal use of the structure due to poor structural integrity, leakage, floor slab cracks and the like, and is gradually replaced by a cast-in-place concrete structure. However, with the application of the currently emerging prefabricated concrete structure, especially with the introduction of a plurality of foreign advanced technologies in recent years, a new technology for constructing a native prefabricated concrete structure is gradually formed.

The application of prefabricated concrete structures has become a new focus of research. New technology and new forms of prefabricated concrete structures of residential buildings are in endlessly developed all over the country. The assembled reinforced concrete structure is one of the important directions for the development of building structures in China, is beneficial to the development of industrialization of buildings in China, improves the production efficiency, saves energy, develops green and environment-friendly buildings, and is beneficial to ensuring and improving the quality of building engineering. Compared with a cast-in-place construction method, the assembly type RC structure is beneficial to green construction, because the assembly type construction can better meet the requirements of land saving, energy saving, material saving, water saving, clean transportation, environmental protection and the like of the green construction, the negative effects on the environment are reduced, including noise reduction, dust prevention, environmental pollution reduction, field interference reduction, water, electricity, material and other resources and energy sources, and the principle of sustainable development is followed. Moreover, the assembly type structure can continuously finish a plurality of or all working procedures of the engineering in sequence, thereby reducing the types and the quantity of the engineering machinery entering the field, eliminating idle time of procedure connection, realizing the three-dimensional crossing operation, reducing the quantity of constructors, improving the working efficiency, reducing the material consumption, reducing the environmental pollution and providing the guarantee for green construction. In addition, the fabricated structure reduces construction waste (about 30% -40% of the total amount of urban waste) to a great extent, such as waste steel bars, waste iron wires, waste bamboo and wood, waste concrete and the like.

The existing construction method has the defects that the quantity of cast-in-place concrete is large, a large amount of waste of materials and labor is caused, the maintenance time of post-cast concrete is long, the construction period is influenced, the hoisting point position of a prefabricated part is not accurate, the requirement on supporting conditions is high, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that exists, the utility model provides an assembled roof beam and board connected node mainly is good for developing an wholeness, simple structure, and safe and reliable, material saving and construction convenience's assembled roof beam and the connected mode of board can effectively solve the problem that the job site exists.

The utility model adopts the technical scheme as follows:

an assembled beam-plate connecting joint comprises a precast concrete beam and a precast concrete plate which are connected with each other, wherein two vertical ends of a U-shaped steel bar in the precast concrete beam respectively penetrate a reserved hole on one side of the precast concrete plate, and grouting is performed in the reserved hole to complete connection;

the two ends of the precast concrete slab are arranged in a stepped manner, one end of the precast concrete slab is provided with an upper step, the other end of the precast concrete slab is provided with a lower step, the longitudinal ribs in the slab are divided into an upper row of longitudinal ribs and a lower row of longitudinal ribs, the two ends of the longitudinal ribs in the slab are processed into a circular shape and welded to form a circular ring, the upper row of longitudinal ribs and the lower row of longitudinal ribs are laid along the horizontal plane at equal intervals, and the upper row of longitudinal ribs and the lower row of longitudinal, at one end of the upper ladder, the upper row of longitudinal ribs are prefabricated in the precast concrete plate, the lower row of longitudinal ribs extend out of the precast concrete plate, at one end of the lower ladder, the lower row of longitudinal ribs are prefabricated in the precast concrete plate, the upper row of longitudinal ribs extend out of the outer side of the precast concrete plate, and the ring position of the precast concrete slab is provided with an upper and lower through reserved hole with the diameter larger than that of the ring, U-shaped steel bars are embedded in the precast concrete beam, the vertical end of the U-shaped reinforcing steel bar is perpendicular to the precast concrete beam, and the transverse end of the U-shaped reinforcing steel bar is embedded in the precast concrete beam.

Furthermore, the upper row of longitudinal ribs and the lower row of longitudinal ribs are staggered by 25-30mm in the horizontal direction, the diameter of the circular ring is 30mm, the horizontal direction distance between two vertical parts of the U-shaped steel rib is 100mm, the longitudinal ribs in the slab are in an inclined state relative to the horizontal plane of the precast concrete slab, and the vertical distance between the upper row of longitudinal ribs and the lower row of circular ring is larger than the diameter of the longitudinal ribs in the slab.

Furthermore, the diameter of the reserved holes is larger than that of the circular ring, the reserved holes are concentric, the height of the reserved holes is equal to the thickness of the precast concrete slab, two rows of the reserved holes are arranged at one end of the precast concrete slab, each reserved hole comprises a short reserved hole and a long reserved hole, the short reserved holes are located on the lower step, rectangular grooves are formed in the reserved holes, and the rectangular grooves are divided into long rectangular grooves and short rectangular grooves; short rectangular grooves are reserved on the outer edges of the outer row of short reserved holes downwards on the upper portion of the lower step, the height of each short rectangular groove is equal to the distance from the upper surface of the lower step to the upper surface of the lower row of longitudinal ribs, and the long reserved holes are located on the upper step; and the outer edge of the outer row of long reserved holes is upwards reserved with a long rectangular groove at the lower part of the upper ladder, and the height of the long rectangular groove is equal to the distance from the lower surface of the upper ladder to the lower surface of the upper row of longitudinal ribs.

Furthermore, the diameters of the overhanging parts of the U-shaped steel bars are different, the diameter of the far end is equal to the diameter of the horizontal part of the U-shaped steel bar in the precast concrete beam, the far end is gradually decreased inwards, the diameter of the far end is gradually decreased to the diameter of the original transverse end at the corner position of the U-shaped steel bar, and the length of the overhanging parts of the U-shaped steel bars is smaller than the thickness of the precast concrete plate.

Furthermore, the U-shaped reinforcing steel bars are arranged at equal intervals along the longitudinal direction of the precast concrete beam and are not parallel to the cross section of the precast concrete beam, the distance between the two vertical ends of the U-shaped reinforcing steel bars is 25-30mm along the longitudinal direction of the precast concrete beam, the U-shaped reinforcing steel bars are located on two sides of the stirrups, the transverse distance between the tops of the two vertical ends of the U-shaped reinforcing steel bars is smaller than the distance between the longitudinal bars of the upper row of precast concrete beam, and the pre-buried height of the U-shaped reinforcing steel bars is smaller than the shortest distance between the longitudinal bars of.

Furthermore, when the connection mode is used for construction, the precast concrete plates are hoisted, the step parts of the two transverse adjacent precast concrete plates are matched, and a circular ring extending out of each precast concrete plate passes through a rectangular groove in the other precast concrete plate and is connected with a circular ring in the other precast concrete plate.

The utility model has the advantages that:

the utility model discloses construction convenience, construction speed are fast, economic effect is good, and the cost is lower, simple structure, and the transportation is convenient, and is not fragile in the transportation, avoids wearing the muscle in the work progress, pollution abatement.

Drawings

Fig. 1 is a completed view of the assembled beam-plate connection joint of the present invention;

fig. 2 is a front view of the assembled beam-plate connection joint of the present invention after completion;

fig. 3 is a schematic view of a precast concrete panel;

fig. 4 is a top plan view of a precast concrete panel;

fig. 5 is a front view of a precast concrete panel;

FIG. 6 is a schematic view of longitudinal ribs in a precast concrete slab;

FIG. 7 is a schematic diagram of reserved holes;

FIG. 8 is a schematic view of a precast concrete beam;

fig. 9 is a schematic sectional view of a precast concrete beam.

In the figure, 1 is an upper precast concrete beam; 2, a lower precast concrete plate; 2-1 is an upper step; 2-2 is a lower step; 3 is an in-board longitudinal rib; 3-1 is an upper row of longitudinal ribs; 3-2 is lower row longitudinal ribs; 3-3 is a circular ring; 4 is a U-shaped steel bar; 5 is a rectangular groove; 5-1 is a long rectangular groove; 5-2 is a short rectangular groove; 6 is a stirrup; 7 is a reserved hole; 7-1 short reserved hole; 7-2 is a long reserved hole; and 8, a precast concrete beam longitudinal bar.

Detailed Description

The present invention will be described in detail with reference to the following drawings and examples:

example (b): as shown in fig. 1-9, the assembly type beam-to-plate connection node of the present invention comprises a precast concrete beam 1 and a precast concrete plate 2 connected to each other, wherein two vertical ends of a U-shaped steel bar 4 in the precast concrete beam 1 respectively penetrate into a reserved hole 7 on one side of the precast concrete plate 2, and grouting is performed into the reserved hole 7 to complete the connection;

the two ends of the precast concrete plate 2 are arranged into a stepped shape, one end of the precast concrete plate is provided with an upper step 2-1, the other end of the precast concrete plate is provided with a lower step 2-2, the inner longitudinal ribs 3 of the plate are divided into an upper row of longitudinal ribs 3-1 and a lower row of longitudinal ribs 3-2, the two ends of the inner longitudinal ribs 3 of the plate are processed into a round shape and welded to form a circular ring 3-3, the upper row of longitudinal ribs 3-1 and the lower row of longitudinal ribs 3-2 are laid along the horizontal plane at equal intervals, the upper row of longitudinal ribs 3-1 and the lower row of longitudinal ribs 3-2 are arranged in a staggered manner in the vertical direction, the upper row of longitudinal ribs 3-1 is precast in the precast concrete plate 2 at one end of the upper step 2-1, the lower row of longitudinal ribs 3-2 extends out of the precast concrete plate 2, the lower row of longitudinal ribs 3-2 is precast in, and the ring 3-3 position of precast concrete board 2 is provided with upper and lower through reserved hole 7 whose diameter is larger than that of ring 3-3, U-shaped reinforcing steel bar 4 is pre-embedded in precast concrete beam 1, the vertical end of U-shaped reinforcing steel bar 4 is perpendicular to precast concrete beam 1, and the horizontal end is embedded in precast concrete beam 1.

The upper row of longitudinal ribs 3-1 and the lower row of longitudinal ribs 3-2 are staggered by 25-30mm in the horizontal direction, the diameter of the circular ring 3-3 is 30mm, the horizontal direction distance between two vertical parts of the U-shaped steel bar 4 is 100mm, the longitudinal ribs 3 in the slab are in an inclined state relative to the horizontal plane of the precast concrete slab 2, and the vertical distance between the upper row of longitudinal ribs 3-3 and the lower row of longitudinal ribs 3-3 is larger than the diameter of the longitudinal ribs 3 in the slab.

The diameter of the reserved hole 7 is larger than that of the circular ring 3-3, the reserved hole 7 is concentric, the height of the reserved hole 7 is equal to the thickness of the precast concrete plate 2, two rows of reserved holes 7 are arranged at one end of the precast concrete plate 2, each reserved hole 7 comprises a short reserved hole 7-1 and a long reserved hole 7-2, the short reserved hole 7-1 is located on the lower step 2-2, a rectangular groove 5 is formed in each reserved hole 7, and each rectangular groove 5 is divided into a long rectangular groove 5-1 and a short rectangular groove 5-2; on the upper part of the lower step 2-2, short rectangular grooves 5-2 are reserved on the outer edges of the outer row of short reserved holes 7-1 downwards, the height of each short rectangular groove 5-2 is equal to the distance from the upper surface of the lower step 2-2 to the upper surface of the lower row of longitudinal ribs 3-2, and the long reserved holes 7-2 are located on the upper step 2-1; and a long rectangular groove 5-1 is reserved on the outer edge of the outer row of long reserved holes 7-2 at the lower part of the upper step 2-1, and the height of the long rectangular groove 5-1 is equal to the distance from the lower surface of the upper step 2-1 to the lower surface of the upper row of longitudinal ribs 3-1.

The diameters of the overhanging parts of the U-shaped reinforcing steel bars 4 are different, the diameters of the far ends are equal to 2 times of the diameters of the horizontal parts of the U-shaped reinforcing steel bars in the precast concrete beam 1, the diameters of the far ends are gradually decreased inwards, the diameters of the far ends are gradually decreased to the diameters of the original transverse ends at the corner positions of the U-shaped reinforcing steel bars 4, and the lengths of the overhanging parts of the U-shaped reinforcing steel bars 4 are smaller than the thickness of the precast concrete slab 2.

U-shaped reinforcing bar 4 vertically equally spaced along precast concrete roof beam 1 sets up, and be not parallel to the cross section of precast concrete roof beam 1, and two vertical end place cross sections of U-shaped reinforcing bar 4 vertically apart from being 25-30mm along precast concrete roof beam 1, and lie in stirrup 6 both sides, and the transverse distance between the two vertical end tops of U-shaped reinforcing bar 4 is less than the distance between the precast concrete roof beam of going up and indulges the muscle 8, and the pre-buried height of U-shaped reinforcing bar 4 is less than the minimum distance between the precast concrete roof beam indulges the muscle 5.

When the connection mode is used for construction, the precast concrete plates 2 are hoisted, the step parts of the two transverse adjacent precast concrete plates 2 are matched, and the circular rings 3-3 extending out of the precast concrete plates 2 penetrate through the rectangular grooves 5 on the other precast concrete plate 2 and are connected with the circular rings 3-3 in the precast concrete plates.

Claims

1. The utility model provides an assembled roof beam and board connected node which characterized in that: the prefabricated concrete beam comprises a prefabricated concrete beam (1) and a prefabricated concrete plate (2) which are connected with each other, wherein two vertical ends of a U-shaped steel bar (4) in the prefabricated concrete beam (1) respectively penetrate into a reserved hole (7) on one side of the prefabricated concrete plate (2), and grouting is injected into the reserved hole (7) to complete connection;

the precast concrete slab (2) is provided with two stepped ends, one end is an upper step (2-1), the other end is a lower step (2-2), the in-slab longitudinal ribs (3) are divided into an upper row of longitudinal ribs (3-1) and a lower row of longitudinal ribs (3-2), the two ends of the in-slab longitudinal ribs (3) are processed into a circle and welded to form a circular ring (3-3), the upper row of longitudinal ribs (3-1) and the lower row of longitudinal ribs (3-2) are laid at equal intervals along a horizontal plane, the upper row of longitudinal ribs (3-1) and the lower row of longitudinal ribs (3-2) are arranged in a staggered manner in the vertical direction, the upper row of longitudinal ribs (3-1) is precast in the precast concrete slab (2) at one end of the upper step (2-1), the lower row of longitudinal ribs (3-2) extends out of the precast concrete slab (2), and the lower row of longitudinal ribs (3-2) is precast in the precast concrete slab (2), the upper row of longitudinal bars (3-1) extend out of the outer side of the precast concrete plate (2), upper and lower through reserved holes (7) with the diameter larger than that of the circular rings (3-3) are formed in the positions of the circular rings (3-3) of the precast concrete plate (2), U-shaped steel bars (4) are embedded in the precast concrete beam (1), the vertical ends of the U-shaped steel bars (4) are perpendicular to the precast concrete beam (1), and the transverse ends of the U-shaped steel bars are embedded in the precast concrete beam (1).

2. The fabricated beam to panel connection node of claim 1, wherein: the upper row longitudinal rib (3-1) and the lower row longitudinal rib (3-2) are staggered by 25-30mm in the horizontal direction, the diameter of the circular ring (3-3) is 30mm, the horizontal direction distance between two vertical parts of the U-shaped steel bar (4) is 100mm, the in-plate longitudinal rib (3) is in an inclined state relative to the horizontal plane of the precast concrete plate (2), and the vertical distance between the circular rings (3-3) at the two ends of the upper row longitudinal rib (3-1) and the lower row longitudinal rib (3-2) is larger than the diameter of the in-plate longitudinal rib (3).

3. The fabricated beam to panel connection node of claim 1, wherein: the diameter of the reserved hole (7) is larger than that of the circular ring (3-3), the reserved hole is concentric, the height of the reserved hole (7) is equal to the thickness of the precast concrete plate (2), two rows of reserved holes (7) are arranged at one end of the precast concrete plate (2), each reserved hole (7) comprises a short reserved hole (7-1) and a long reserved hole (7-2), the short reserved hole (7-1) is located on the lower step (2-2), a rectangular groove (5) is formed in each reserved hole (7), and each rectangular groove (5) is divided into a long rectangular groove (5-1) and a short rectangular groove (5-2); on the upper part of the lower step (2-2), short rectangular grooves (5-2) are reserved on the outer edges of the outer-row short reserved holes (7-1) downwards, the height of each short rectangular groove (5-2) is equal to the distance from the upper surface of the lower step (2-2) to the upper surface of the lower-row longitudinal rib (3-2), and the long reserved holes (7-2) are located on the upper step (2-1); and a long rectangular groove (5-1) is reserved on the outer edge of the outer row of long reserved holes (7-2) upwards at the lower part of the upper step (2-1), and the height of the long rectangular groove (5-1) is equal to the distance from the lower surface of the upper step (2-1) to the lower surface of the upper row of longitudinal ribs (3-1).

4. The fabricated beam to panel connection node of claim 1, wherein: the diameters of the overhanging parts of the U-shaped reinforcing steel bars (4) are different, the diameters of the far ends are equal to 2 times of the diameters of the horizontal parts of the U-shaped reinforcing steel bars in the precast concrete beam (1), the diameters of the far ends are gradually reduced from the far ends to the inside, the diameters of the original transverse ends are gradually reduced at the corner positions of the U-shaped reinforcing steel bars (4), and the lengths of the overhanging parts of the U-shaped reinforcing steel bars (4) are smaller than the thickness of the precast concrete slab (2).

5. The fabricated beam to panel connection node of claim 1, wherein: u-shaped reinforcing bar (4) are along the vertical equidistant setting of precast concrete roof beam (1), and be not parallel to the cross section of precast concrete roof beam (1), and two vertical end place cross sections of U-shaped reinforcing bar (4) are vertically apart from being 25-30mm along precast concrete roof beam (1), and are located stirrup (6) both sides, and the transverse distance between the two vertical end tops of U-shaped reinforcing bar (4) is less than the distance between the precast concrete roof beam longitudinal bar (8) of going up, and U-shaped reinforcing bar (4) are pre-buried highly to be less than the shortest distance between precast concrete roof beam longitudinal bar (8).