CN210857491U - Prefabricated assembly type non-reinforced concrete frame - Google Patents
Prefabricated assembly type non-reinforced concrete frame Download PDFInfo
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- CN210857491U CN210857491U CN201921307583.7U CN201921307583U CN210857491U CN 210857491 U CN210857491 U CN 210857491U CN 201921307583 U CN201921307583 U CN 201921307583U CN 210857491 U CN210857491 U CN 210857491U
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Abstract
The utility model provides a prefabricated non-reinforced concrete frame, which comprises a prefabricated concrete node column, a prefabricated concrete beam, a steel connecting piece and a grouting pipe; the precast concrete node columns and the precast concrete beams are both formed by pouring polyethylene fiber concrete; the polyethylene fiber concrete is formed by mixing cement, sand, water, fly ash, a water reducing agent and polyethylene fibers. The prefabricated non-reinforced concrete frame can ensure the strength and the ductility of the member and avoid the use of reinforcing steel bars, thereby effectively saving resources and improving the site construction efficiency and the quality safety level.
Description
Technical Field
The utility model relates to a building structure especially relates to a prefabricated assembled does not have reinforced concrete frame and construction method thereof.
Background
The existing prefabricated reinforced concrete frame has multiple prefabricated parts construction procedures, the connection and assembly procedures on the construction site are complicated, and the construction quality is difficult to ensure; in addition, because the reinforced concrete member is mostly in a working state with cracks, corrosive media easily invade into the member, corrode the stressed reinforcing steel bars, destroy the bearing capacity and durability of the structure, and endanger the safety of lives and properties of people. Therefore, the traditional prefabricated reinforced concrete frame has many defects in the aspects of production efficiency, quality safety and the like. If the use of reinforcing steel in concrete frame members could be avoided, the problems of durability and load bearing loss due to concrete cracking would be solved, and the manufacturing process and field assembly procedures would be simplified.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the main technical problem that aim at overcoming traditional prefabricated assembled reinforced concrete frame's shortcoming and not enough, provide a prefabricated assembled non-reinforced concrete frame. The frame component is formed by pouring ultrahigh-ductility polyethylene fiber concrete, so that resources can be effectively saved, and the site construction efficiency and the quality safety level can be improved.
The technical scheme of the utility model as follows: a prefabricated, assembled, non-reinforced concrete frame comprising: the prefabricated concrete joint column, the prefabricated concrete beam, the steel connecting piece and the grouting pipe are arranged on the prefabricated concrete joint column;
the precast concrete node columns and the precast concrete beams are both formed by pouring polyethylene fiber concrete; the polyethylene fiber concrete is formed by mixing cement, sand, water, fly ash, a water reducing agent and polyethylene fibers;
a small section of beam for connecting the precast concrete beam is precast in the middle of the precast concrete node column; each small section beam is provided with a bolt hole for connecting a steel connecting piece; the bolt holes are parallel to the beam sections and penetrate through the small sections of beams, and the arrangement directions of the bolt holes are divided into a vertical direction and a horizontal direction; an L-shaped grouting hole for communicating the upper surface and the section of the small section beam is reserved at the upper part of the small section beam;
bolt holes for connecting steel connecting pieces are reserved at the upper end and the lower end of each precast concrete node column; the bolt holes are parallel to the section of the node column and penetrate through the node column, and the arrangement direction of the bolt holes is divided into a front-back direction and a left-right direction. The lower end of the node column is provided with an L-shaped grouting hole which is communicated with the front surface and the bottom surface of the node column on the front surface and the back surface respectively besides a bolt hole for connecting a steel connecting piece;
bolt holes for connecting steel connecting pieces and L-shaped grouting holes for communicating the top surface and the section of the precast beam are reserved at two ends of the precast concrete beam respectively; the bolt holes are parallel to the beam sections and penetrate through the precast beam, and the arrangement directions of the bolt holes are divided into a vertical direction and a horizontal direction;
the steel connecting piece comprises a beam-beam connecting plate group and a column-column connecting plate; wherein the beam-beam connecting plate group comprises two connecting plates of a beam-beam side surface and a beam-beam top surface; the three connecting plates are provided with bolt holes for connecting the precast concrete joint columns and the precast concrete beams;
the grouting pipe is divided into a straight shape and an L shape, and the two ends of the grouting pipe are respectively a grouting end and a contraction end.
In a preferred embodiment: the outer diameter of the middle section of the grouting pipe is equal to the inner diameter of the grouting hole, the outer diameter of the contraction end pipe is gradually reduced so as to be conveniently inserted into the grouting hole, and the outer diameter of the grouting end is gradually expanded so as to be convenient for grouting.
In a preferred embodiment: the L-shaped grouting holes are not intersected with the reserved bolt holes and cannot be covered by the connecting plate.
In a preferred embodiment: the middle distance and the edge distance of the bolt holes are not less than 3 times of the hole diameter, and the distance between the pore channels of the mutually perpendicular bolt holes is also not less than 3 times of the hole diameter.
In a preferred embodiment: the hole positions of the steel connecting pieces correspond to the positions of the bolt holes in the component surface where the steel connecting pieces are used one by one.
The utility model also provides a construction method as above prefabricated assembled non-reinforced concrete frame, including following step:
1) prefabricating the concrete joint column, the concrete beam, the steel connecting piece and the grouting pipe;
2) butt-joint precast concrete node columns: ensuring that the L-shaped grouting hole at the small section of the beam is arranged at the upper part; hoisting a precast concrete node column and positioning the precast concrete node column and the next node column in the same vertical direction, controlling the distance between column-column butt joint surfaces to be about 30mm, surrounding the butt joint ends by 4 column-column connecting plates at four sides, and fixing the connecting plates and the upper and lower node columns through bolts;
3) pouring the ultra-high-ductility polyethylene fiber concrete: inserting the contraction end and the middle section with proper length of the L-shaped grouting pipe into any grouting hole reserved at the bottom of the precast concrete joint column, ensuring that the opening of the grouting end faces upwards, pouring the ultra-high-ductility polyethylene fiber concrete from the grouting end, stopping grouting when grouting holes on the other side uniformly overflow, pulling out the grouting pipe and sealing the grouting holes on the two sides with wax.
4) Butt-joint precast concrete node column and precast concrete beam: ensuring that an L-shaped grouting hole at the beam end is arranged at the upper part, lifting the precast concrete beam to be aligned with the joint section beam, surrounding the butt joint end by using a beam-beam connecting plate group, and fixing the connecting plate, the section beam and the beam end by using bolts;
5) pouring the ultra-high-ductility polyethylene fiber concrete: inserting the contraction end and the middle section of the straight grouting pipe into the grouting holes reserved at the beam end or the small section of the beam, pouring the ultra-high-ductility polyethylene fiber concrete from the grouting end, stopping grouting when the grouting holes on the other side uniformly overflow, pulling out the grouting pipe and sealing the grouting holes on the two sides with wax.
Compared with the prior art, the utility model discloses an advantage does with outstanding effect:
1. the ultrahigh-ductility polyethylene fiber concrete is directly used for pouring the components of the prefabricated non-reinforced concrete frame system, so that the superior characteristics of high strength, good ductility and corrosion resistance of the ultrahigh-ductility polyethylene fiber concrete are fully exerted, the quality safety of the structure is ensured, and the manufacturing process of the prefabricated components is greatly simplified.
2. The non-reinforced concrete frame avoids the use of reinforcing steel bars in frame members, perfectly solves the problems of durability reduction and bearing capacity loss caused by the work with cracks and the corrosion of the reinforcing steel bars, and greatly saves steel.
3. The utility model discloses possess good feasibility technically, and construction method is simple, has guaranteed site operation quality, has improved site operation efficiency and security.
Drawings
FIG. 1 is a schematic view of a precast concrete node column of the present invention;
fig. 2 is a schematic view of the precast concrete beam of the present invention;
fig. 3 is a schematic view of a beam-beam connection plate set of the present invention;
FIG. 4 is a schematic view of a column-column connecting plate of the present invention;
FIG. 5 is a schematic view of the grouting pipe of the present invention;
FIG. 6 is a schematic view of the beam-to-beam grouting method of the present invention;
FIG. 7 is a schematic view of the column-column grouting method of the present invention;
FIG. 8 is a schematic view of the finished product of the present invention;
in the figure: 1-bolt hole; 2-small section beam; 3- "L-shaped" grouting holes; 4-beam side panels; 5-beam top (bottom) panel; 6- "straight" grouting pipe; 7- "L-shaped" grouting pipe; 8-column connection plate; 9-a nut; 10-prefabricating a concrete joint column; 11-precast concrete beam; 12-a perfusion end; 13-a converging end; 14-middle section; 15-prefabricating concrete node columns; 16-precast concrete beam; 17-steel connectors; 18-beam connector set; 19-column connection plate; and 20-grouting pipes.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings.
Referring to fig. 1 to 8, a prefabricated assembly type non-reinforced concrete frame includes prefabricated concrete node columns 15, prefabricated concrete beams 16, steel connectors 17, and grout pipes 20.
The precast concrete node columns 15 and the precast concrete beams 16 are both formed by pouring ultra-high-ductility polyethylene fiber concrete (the mixing proportion can refer to table 1), and the precast concrete node columns and the precast concrete beams have the advantages of high strength, good ductility, corrosion resistance and the like through experimental verification and can be directly applied to engineering structures.
TABLE 1 reference mixing ratio of ultra-high ductility polyethylene fiber concrete (kg/m3)
And a small section beam 2 for connecting the precast concrete beam is precast in the middle of the precast concrete node column 15. Each small section beam 2 is provided with a bolt hole 1 for connecting a steel connecting piece 17; the bolt holes 1 are parallel to the beam section and penetrate through the small-section beams 2, and the arrangement direction of the bolt holes 1 is divided into a vertical direction and a horizontal direction. An L-shaped grouting hole 3 communicating the upper surface and the section of the small section beam 2 is reserved at the upper part of the small section beam 2. The upper end and the lower end of the precast concrete node column 15 are provided with bolt holes 1 for connecting steel connecting pieces 17; the bolt holes 1 are parallel to the section of the node column 15 and penetrate through the node column 15, and the arrangement directions of the bolt holes 1 are divided into a front-back direction and a left-right direction. The lower end of the node column 15 is provided with an L-shaped grouting hole 3 which is communicated with the front (back) surface and the bottom surface of the node column 15 respectively on the front and back surfaces except for a bolt hole 1 used for connecting a steel connecting piece 17.
The steel connectors comprise a beam-beam connection plate group 18 and a column-column connection plate 19. Wherein the set of beam-to-beam connection plates 18 comprises two connection plates, a beam-to-beam side surface 4 and a beam-to-beam top (bottom) surface 5. The three connecting plates 17 are all provided with bolt holes 1 for connecting the precast concrete node columns 15 and the precast concrete beams 16. The distance between the connected frame column-column butt joint surface and the beam-beam butt joint surface is about 30mm by determining the size of a proper connecting plate.
The grouting pipe 20 is divided into a straight shape 6 and an L shape 7, the two ends of the grouting pipe are respectively a grouting end 12 and a contraction end 13, the outer diameter of the middle section 14 of the grouting pipe is equal to the inner diameter of the grouting hole 3, the outer diameter of the contraction end 13 pipe is reduced by 4mm so as to be conveniently inserted into the grouting hole 3, and the outer diameter of the grouting end 12 is gradually increased by 60mm so as to be conveniently grouted.
The L-shaped grouting holes 3 are not intersected with the reserved bolt holes 1 and cannot be covered by the connecting plate.
The middle distance and the edge distance of the bolt holes 1 are not less than 3 times of the hole diameter, and the hole channel distance of the mutually vertical bolt holes 1 is also not less than 3 times of the hole diameter.
The hole positions of the steel connecting pieces 17 correspond to the positions of the bolt holes 1 on the component surface where the steel connecting pieces are used one by one.
The utility model also provides a construction method of prefabricated assembled non-reinforced concrete frame, this method includes following step:
the precast concrete node columns 15, the concrete beams 16, the steel connecting pieces 17 and the grouting pipes are reserved according to the above description, the grouting holes 3 and the bolt holes 1 are ensured not to intersect with the reserved bolt holes 1 and not to be covered by the connecting pieces 17 after installation, and the hole positions of the steel connecting pieces 17 are ensured to be in one-to-one correspondence with the bolt hole positions of the component surfaces where the steel connecting pieces 17 are used.
Butt-joint precast concrete node columns 15: and the L-shaped grouting hole 3 at the small section beam 2 is ensured to be arranged at the upper part. A precast concrete joint column 15 is lifted and positioned in the same vertical direction as the next joint column 15, the distance between column-column butt joint surfaces is controlled to be about 30mm, 4 column-column connecting plates 8 surround the butt joint ends on four sides, and the connecting plates 8 and the upper and lower joint columns 15 are fixed through bolts.
Pouring the ultra-high-ductility polyethylene fiber concrete: inserting the contraction end 13 and the middle section 14 with proper length of the L-shaped grouting pipe 7 into any grouting hole 3 reserved at the bottom of the precast concrete node column 15, ensuring that the opening of the grouting end 12 faces upwards, pouring ultra-high-ductility polyethylene fiber concrete from the grouting end 12, stopping grouting when grouting holes 3 on the other side uniformly overflow, pulling out the grouting pipe 7 and sealing the grouting holes 3 on the two sides with wax.
And (3) butting the precast concrete node columns 15 with the precast concrete beams 16: the beam end is secured with the "L-shaped" grout holes 3 at the top, the precast concrete beam 16 is lifted into alignment with the joining section beam 2, the butt joint is enclosed by the beam-beam connector set 18, and the connector plate 18 and section beam 2 are bolted to the beam end.
Pouring the ultra-high-ductility polyethylene fiber concrete: the contraction end 13 and the middle section 14 with proper length of the straight grouting pipe 6 are inserted into the grouting hole 3 reserved at the beam end or the small section of the beam 2, the ultra-high ductility polyethylene fiber concrete is poured from the pouring end 12, when the grouting hole 3 on the other side is evenly overflowed, grouting is stopped, the grouting pipe 6 is pulled out, and the grouting holes 3 on the two sides are sealed by wax.
The above description is only an exemplary embodiment of the present invention, and the scope of the present invention should not be limited accordingly. The equivalent changes and modifications made according to the patent scope and the content of the specification of the present invention should still fall within the scope covered by the present invention.
Claims (5)
1. A prefabricated, assembled, non-reinforced concrete frame, comprising: the prefabricated concrete joint column, the prefabricated concrete beam, the steel connecting piece and the grouting pipe are arranged on the prefabricated concrete joint column;
the precast concrete node columns and the precast concrete beams are both formed by pouring polyethylene fiber concrete;
a small section of beam for connecting the precast concrete beam is precast in the middle of the precast concrete node column; each small section beam is provided with a bolt hole for connecting a steel connecting piece; the bolt holes are parallel to the beam sections and penetrate through the small sections of beams, and the arrangement directions of the bolt holes are divided into a vertical direction and a horizontal direction; an L-shaped grouting hole for communicating the upper surface and the section of the small section beam is reserved at the upper part of the small section beam;
bolt holes for connecting steel connecting pieces are reserved at the upper end and the lower end of each precast concrete node column; the bolt holes are parallel to the section of the node column and penetrate through the node column, and the arrangement direction of the bolt holes is divided into a front-back direction and a left-right direction; the lower end of the node column is provided with an L-shaped grouting hole which is communicated with the front surface and the bottom surface of the node column on the front surface and the back surface respectively besides a bolt hole for connecting a steel connecting piece;
bolt holes for connecting steel connecting pieces and L-shaped grouting holes for communicating the top surface and the section of the precast beam are reserved at two ends of the precast concrete beam respectively; the bolt holes are parallel to the beam sections and penetrate through the precast beam, and the arrangement directions of the bolt holes are divided into a vertical direction and a horizontal direction;
the steel connecting piece comprises a beam-beam connecting plate group and a column-column connecting plate; wherein the beam-beam connecting plate group comprises two connecting plates of a beam-beam side surface and a beam-beam top surface; the three connecting plates are provided with bolt holes for connecting the precast concrete joint columns and the precast concrete beams;
the grouting pipe is divided into a straight shape and an L shape, and the two ends of the grouting pipe are respectively a grouting end and a contraction end.
2. A prefabricated reinforced concrete frame as recited in claim 1, wherein: the outer diameter of the middle section of the grouting pipe is equal to the inner diameter of the grouting hole, the outer diameter of the contraction end pipe is gradually reduced so as to be conveniently inserted into the grouting hole, and the outer diameter of the grouting end is gradually expanded so as to be convenient for grouting.
3. A prefabricated reinforced concrete frame as recited in claim 1, wherein: the L-shaped grouting holes are not intersected with the reserved bolt holes and cannot be covered by the connecting plate.
4. A prefabricated reinforced concrete frame as recited in claim 1, wherein: the middle distance and the edge distance of the bolt holes are not less than 3 times of the hole diameter, and the distance between the pore channels of the mutually perpendicular bolt holes is also not less than 3 times of the hole diameter.
5. A prefabricated reinforced concrete frame as recited in claim 1, wherein: the hole positions of the steel connecting pieces correspond to the positions of the bolt holes in the component surface where the steel connecting pieces are used one by one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921307583.7U CN210857491U (en) | 2019-08-13 | 2019-08-13 | Prefabricated assembly type non-reinforced concrete frame |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921307583.7U CN210857491U (en) | 2019-08-13 | 2019-08-13 | Prefabricated assembly type non-reinforced concrete frame |
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| CN210857491U true CN210857491U (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424534A (en) * | 2019-08-13 | 2019-11-08 | 华侨大学 | A kind of prefabricated assembled non-reinforced concrete frame and its construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424534A (en) * | 2019-08-13 | 2019-11-08 | 华侨大学 | A kind of prefabricated assembled non-reinforced concrete frame and its construction method |
| CN110424534B (en) * | 2019-08-13 | 2023-12-29 | 华侨大学 | Prefabricated assembled type reinforced-free concrete frame and construction method thereof |
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