CN115404980A - Novel UHPC-based precast concrete frame structure system and construction method thereof - Google Patents

Novel UHPC-based precast concrete frame structure system and construction method thereof Download PDF

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Publication number
CN115404980A
CN115404980A CN202210958517.6A CN202210958517A CN115404980A CN 115404980 A CN115404980 A CN 115404980A CN 202210958517 A CN202210958517 A CN 202210958517A CN 115404980 A CN115404980 A CN 115404980A
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CN
China
Prior art keywords
precast
uhpc
prefabricated
foundation
suspension
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CN202210958517.6A
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Chinese (zh)
Inventor
刘允伟
陈世学
邹锋
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Sichuan Yutong Building Material Co ltd
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Sichuan Yutong Building Material Co ltd
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Priority to CN202210958517.6A priority Critical patent/CN115404980A/en
Publication of CN115404980A publication Critical patent/CN115404980A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/0007Base structures; Cellars
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21Connections specially adapted therefor

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The invention relates to the technical field of civil engineering, in particular to a novel UHPC-based precast concrete frame structure system and a construction method thereof, which comprises a foundation, wherein the top end of the foundation is symmetrically and fixedly provided with precast columns, and the interior of each precast column is hollow; the middle parts of the opposite surfaces of the precast columns are fixedly provided with suspension beams, a precast beam is arranged between the two suspension beams, and the suspension beams are connected with the precast beams through UHPC pouring areas; the top of prefabricated post is provided with the tie-beam jointly, the fixed fixture block one that is provided with in bottom one side of tie-beam, the fixed fixture block two that is provided with in bottom opposite side of tie-beam, and fixture block one and fixture block two all are located prefabricated inside the post. The suspension beam and the precast beam are connected through the UHPC pouring area, so that the strength of a connecting surface can be enhanced, and the operation is simpler and more convenient due to the light structure of the suspension beam and the precast beam; through set up the hanging beam on prefabricated post, can reduce the destruction degree to prefabricated post when the precast beam suffers to destroy the fracture.

Description

Novel UHPC-based precast concrete frame structure system and construction method thereof
Technical Field
The invention relates to the technical field of civil engineering, in particular to a novel UHPC-based precast concrete frame structure system and a construction method thereof.
Background
UHPC refers to ultra-high performance concrete, and is a general name of a cement-based composite material with the compressive strength of more than 150MPA, ultra-high toughness and ultra-long durability; the concrete frame structure is formed by assembling light plates such as bearing beams and columns formed by pouring reinforced concrete, hollow bricks or prefabricated aerated concrete, ceramsite and the like as partition walls in a household mode.
The current concrete frame structure center pillar roof beam is generally all through reinforced bar concreting connection, makes whole overall structure all collapse easily when the structure local suffers destruction, and UHPC is as the combined material that a performance is high, if whole or use in a large number in concrete frame structure, can lead to the construction cost too high again. Therefore, the novel UHPC-based precast concrete frame structure system and the construction method thereof are provided.
Disclosure of Invention
The invention provides a novel UHPC-based precast concrete frame structure system which comprises a foundation, wherein precast columns are symmetrically and fixedly arranged at the top end of the foundation, and the interior of each precast column is hollow; the middle parts of the opposite surfaces of the precast columns are fixedly provided with suspension beams, a precast beam is arranged between the two suspension beams, and the suspension beams are connected with the precast beams through UHPC pouring areas; the top of prefabricated post is provided with the tie-beam jointly, the fixed fixture block one that is provided with in bottom one side of tie-beam, the fixed fixture block two that is provided with in bottom opposite side of tie-beam, and fixture block one and fixture block two all are located prefabricated inside the post.
In a preferred embodiment of the present invention, the foundation is formed by casting a steel bar and concrete, and the steel pipe is fixed to the inside of the foundation.
As a preferred technical scheme of the invention, the top end of the steel pipe extends to the top of the foundation, and the surface of the steel pipe positioned at the top of the foundation is uniformly provided with a plurality of first grouting holes.
As a preferred technical scheme of the invention, a plurality of second grouting holes are uniformly formed in the surface of the prefabricated column, and the first grouting holes are the same as the second grouting holes.
As a preferable technical solution of the present invention, the size of the first fixture block is twice the size of the second fixture block.
As a preferred technical scheme of the invention, a bayonet is arranged on one side of the suspension beam facing the precast beam, and a clamping frame is fixedly arranged on one side of the precast beam facing the suspension beam and matched with the bayonet.
As a preferred technical scheme of the invention, UHPC pouring holes are formed in the top surfaces of the clamping frames and the top surfaces of the suspension beams, and reinforcing steel bars are fixedly arranged in the prefabricated columns.
As a preferable technical scheme of the invention, the method also comprises the following steps:
s1: prefabricating a prefabricated column, a prefabricated beam with a suspension beam, a connecting beam and a steel pipe in a factory, wherein a first grouting hole is formed in the steel pipe, a second grouting hole is formed in the prefabricated column, and UHPC (ultra high performance concrete) pouring holes are formed in the suspension beam and a clamping frame positioned on the prefabricated beam;
s2: pouring the foundation by using concrete and steel bars, and enabling a part of the steel pipe to be positioned in the foundation;
s3: mounting the prefabricated columns on a foundation, connecting the prefabricated beam in the suspension beam between the two prefabricated columns, and pouring Kong Jiaozhu UHPC through the UHPC;
s4: and pouring concrete into the prefabricated column, and fixedly arranging the connecting beam at the top end of the prefabricated column.
The invention has the beneficial effects that: the suspension beam and the precast beam are connected through the UHPC pouring area, so that the strength of the connecting surface can be enhanced, and the operation is simpler and more convenient due to the light structure of the suspension beam and the precast beam.
Through set up the hanging beam on prefabricated post, can reduce the destruction degree to prefabricated post when the precast beam suffers to destroy the fracture.
The surface of foundation is provided with the steel pipe, and the steel pipe both can play the effect of direction to the prefabricated post of installation, can also strengthen the stability of prefabricated post simultaneously, and can pour into high strength tank thick liquids into in the slip casting hole one of seting up on the steel pipe and the slip casting hole two of seting up on the prefabricated post, the stability of reinforcing prefabricated post structure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram showing the overall structure of a novel UHPC-based precast concrete frame structure system;
FIG. 2 is a schematic diagram of the overall structure of a novel UHPC-based precast concrete frame structure system of the invention;
FIG. 3 is a first partial structural view of a novel UHPC-based precast concrete frame structure system according to the present invention;
FIG. 4 is a schematic view of a second partial structure of a novel UHPC-based precast concrete frame structure system of the present invention;
FIG. 5 is a schematic view of a third partial structure of a novel UHPC-based precast concrete frame structure system of the present invention;
fig. 6 is a flow chart of a construction method of a novel UHPC-based precast concrete frame structure system according to the present invention.
In the figure: 1. a foundation; 2. prefabricating a column; 3. a suspension beam; 4. prefabricating a beam; 5. a connecting beam; 6. a first clamping block; 7. a second clamping block; 8. a steel pipe; 9. a first grouting hole; 10. a second grouting hole; 11. a bayonet; 12. clamping a frame; 13. pouring holes in UHPC; 14. and (5) reinforcing steel bars.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment is as follows: as shown in fig. 1 to 6, the novel UHPC-based precast concrete frame structure system comprises a foundation 1, wherein precast columns 2 are symmetrically and fixedly arranged at the top end of the foundation 1, and the precast columns 2 are hollow inside, so that concrete can be poured conveniently, and the stability of the precast columns 2 is enhanced. The middle parts of the opposite surfaces of the prefabricated columns 2 are fixedly provided with the suspension beams 3, the prefabricated beams 4 are arranged between the two suspension beams 3, the suspension beams 3 are connected with the prefabricated beams 4 through UHPC pouring areas, during specific construction, the construction can be divided into two installation conditions according to actual requirements, the first installation condition is that two symmetrical prefabricated columns 2 are installed, the second installation condition is that three prefabricated columns 2 are installed, and when the two prefabricated columns 2 are installed, the suspension beams 3 on the prefabricated columns 2 are fixedly connected through the prefabricated beams 4; when three prefabricated posts 2 are installed, the left side and the right side of the middle prefabricated post 2 are symmetrically provided with the suspension beams 3 and are respectively connected with the prefabricated posts 2 at the left end and the right end through the prefabricated beams 4, when the connection is carried out, the stability of the connection part can be enhanced through the UHPC pouring area, and the UHPC material is lighter in material and easier to operate and has good connectivity compared with reinforced concrete.
The top of prefabricated post 2 is provided with tie-beam 5 jointly, and the fixed fixture block 6 that is provided with in bottom one side of tie-beam 5, and the fixed fixture block two 7 that is provided with in bottom opposite side of tie-beam 5, and fixture block 6 and fixture block two 7 all are located prefabricated post 2 insidely. When two precast columns 2 are installed, the two sides of the bottom end of the connecting beam 5 are fixture blocks I6, when three precast columns 2 are installed, one side of the bottom end of the connecting beam 5 is the fixture block I6, the other side of the bottom end of the connecting beam is fixture block II 7, and the fixture block II 7 is located in the precast column 2 in the middle. The size of the first clamping block 6 is twice that of the second clamping block 7, and the two clamping blocks 7 can be arranged in the prefabricated column 2 at the same time.
The foundation 1 is formed by pouring reinforcing steel bars 14 and concrete, and the steel pipes 8 are fixedly arranged inside the foundation 1. The top of steel pipe 8 extends to the top of ground 1, and is located the steel pipe 8 surface at ground 1 top and has evenly seted up a plurality of injected holes 9. A plurality of second grouting holes 10 are uniformly formed in the surface of the prefabricated column 2, and the first grouting holes 9 are identical to the second grouting holes 10. Can play the effect of direction for prefabricated post 2 through steel pipe 8, make a plurality of prefabricated posts 2 be located same water flat line, can also strengthen simultaneously prefabricated post 2's stability, when prefabricated post 2 cover was established on steel pipe 8 surface, can pour into high strength tank thick liquids into in grouting hole one 9 through two 10 of injected hole to reinforcing stability, after slip casting is accomplished, the accessible leaking stoppage stopper seals two 10 of injected hole.
Bayonet 11 has been seted up towards precast beam 4 one side to the precast beam 3, and precast beam 4 is provided with card frame 12 towards the fixed one side of hanging beam 3, and card frame 12 and bayonet 11 phase-match. UHPC pouring holes 13 are formed in the top surfaces of the clamping frames 12 and the top surfaces of the suspension beams 3, and the clamping frames 12, the bayonets 11 and the UHPC pouring holes 13 belong to UHPC pouring areas. The inside of precast column 2 is fixed and is provided with reinforcing bar 14, when needs are connected precast beam 4 with precast column 2, can install precast column 2 earlier, then send precast beam 4 into between two precast columns 2 from top to bottom, make the card frame 12 and the bayonet 11 matching of precast beam 4 both ends good, pour the UHPC material to card frame 12 and cantilever beam 3 inside through UHPC pouring hole 13.
The method comprises the following steps:
s1: prefabricating a prefabricated column 2, a prefabricated beam 4 provided with a suspension beam 3, a connecting beam 5 and a steel pipe 8 in a factory, wherein a first grouting hole 9 is formed in the steel pipe 8, a second grouting hole 10 is formed in the prefabricated column 2, and UHPC (ultra high performance concrete) pouring holes 13 are formed in the suspension beam 3 and a clamping frame 12 positioned on the prefabricated beam 4;
s2: pouring the foundation 1 with concrete and steel bars 14, and having a portion of the steel pipe 8 inside the foundation 1;
s3: the prefabricated column 2 is arranged on the foundation 1, the prefabricated column 2 is sleeved on the surface of the steel pipe 8, the steel pipe 8 plays a role in guiding and enhancing the stability of the prefabricated column 2, and after the prefabricated column 2 is sleeved on the surface of the steel pipe 8, high-strength tank slurry can be injected into the first grouting hole 9 through the second grouting hole 10, so that the stability is enhanced; after the prefabricated columns 2 of the first layer are installed, pouring concrete into the prefabricated columns 2, then placing the prefabricated beam 4 between the two prefabricated columns 2, enabling the clamping frame 12 on the prefabricated beam 4 to be matched with the clamping opening 11 on the suspension beam 3, and then pouring UHPC through the UHPC pouring hole 13;
s4: the connecting beam 5 is fixedly arranged at the top end of the prefabricated column 2, the first clamping block 6 and the second clamping block 7 on the connecting beam 5 are located in the prefabricated column 2, the action can be operated after concrete is poured into the prefabricated column 2, the concrete, the first clamping block 6 and the second clamping block 7 are fixed together, when the second layer and the third layer need to be built again, the prefabricated column 2 continues to be overlapped and fixed on the first layer of the prefabricated column 2, and the operation is continued.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A novel UHPC-based precast concrete frame structure system comprises a foundation (1), and is characterized in that precast columns (2) are symmetrically and fixedly arranged at the top end of the foundation (1), and the interior of each precast column (2) is hollow; the middle parts of the opposite surfaces of the precast columns (2) are fixedly provided with suspension beams (3), a precast beam (4) is arranged between the two suspension beams (3), and the suspension beams (3) are connected with the precast beam (4) through a UHPC pouring area; the top of prefabricated post (2) is provided with tie-beam (5) jointly, the fixed fixture block (6) that is provided with in bottom one side of tie-beam (5), the fixed fixture block two (7) that is provided with in bottom opposite side of tie-beam (5), and fixture block one (6) and fixture block two (7) all are located prefabricated post (2) inside.
2. A novel UHPC-based precast concrete frame structure system according to claim 1, characterized in that the foundation (1) is cast by steel bars (14) and concrete, and steel pipes (8) are fixedly arranged inside the foundation (1).
3. A novel UHPC-based precast concrete frame structure system of claim 2, characterized in that, the top of the steel pipe (8) extends to the top of the foundation (1), and the surface of the steel pipe (8) on the top of the foundation (1) is evenly provided with a plurality of first grouting holes (9).
4. The novel UHPC-based precast concrete frame structure system of claim 2, wherein a plurality of second grouting holes (10) are uniformly formed in the surface of the precast column (2), and the first grouting holes (9) are the same as the second grouting holes (10).
5. A novel UHPC-based precast concrete frame structure system according to claim 1, wherein the size of the first jaw (6) is twice as large as the size of the second jaw (7).
6. A novel UHPC-based precast concrete frame structure system as recited in claim 4, characterized in that a bayonet (11) is opened on one side of the suspension beam (3) facing the precast beam (4), a clamping frame (12) is fixedly arranged on one side of the precast beam (4) facing the suspension beam (3), and the clamping frame (12) is matched with the bayonet (11).
7. A novel UHPC-based precast concrete frame structure system as recited in claim 6, characterized in that the top surface of the clamp frame (12) and the top surface of the suspension beam (3) are provided with UHPC pouring holes (13), and the interior of the precast column (2) is fixedly provided with steel bars (14).
8. The construction method of a novel UHPC-based precast concrete frame structure system according to claim 7, characterized by comprising the following steps:
s1: prefabricating a prefabricated column (2), a prefabricated beam (4) provided with a suspension beam (3), a connecting beam (5) and a steel pipe (8) in a factory, arranging a first grouting hole (9) on the steel pipe (8), arranging a second grouting hole (10) on the prefabricated column (2), and arranging UHPC (ultra high performance concrete) pouring holes (13) on the suspension beam (3) and a clamping frame (12) positioned on the prefabricated beam (4);
s2: pouring the foundation (1) with concrete and steel reinforcement (14) and having a portion of the steel pipe (8) within the foundation (1);
s3: the prefabricated columns (2) are installed on the foundation (1), the prefabricated beam (4) is connected into the suspension beam (3) between the two prefabricated columns (2), and UHPC is poured through the UHPC pouring hole (13);
s4: and pouring concrete into the precast column (2), and fixedly arranging the connecting beam (5) at the top end of the precast column (2).
CN202210958517.6A 2022-08-09 2022-08-09 Novel UHPC-based precast concrete frame structure system and construction method thereof Pending CN115404980A (en)

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Application Number Priority Date Filing Date Title
CN202210958517.6A CN115404980A (en) 2022-08-09 2022-08-09 Novel UHPC-based precast concrete frame structure system and construction method thereof

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206328863U (en) * 2016-11-30 2017-07-14 上海建工二建集团有限公司 Prefabricated assembled frame beam column structure
CN107989184A (en) * 2017-12-28 2018-05-04 上海建工二建集团有限公司 Prefabricated frame system and method for node prefabrication and UHPC post-cast connection
CN108149788A (en) * 2018-01-18 2018-06-12 广州大学 A kind of assembling frame structure and its construction method
CN207829154U (en) * 2017-12-28 2018-09-07 上海建工二建集团有限公司 Prefabricated node and UHPC post-cast connected assembly type frame system
CN108775085A (en) * 2018-07-09 2018-11-09 东南大学 The assembled integral concrete frame structure and its construction method of beam-ends connection
CN109083275A (en) * 2018-09-10 2018-12-25 西北民族大学 Prefabricated post and integral preform beam slab assembly node and its construction method
CN111576619A (en) * 2020-05-29 2020-08-25 三一筑工科技有限公司 Production method of high-strength concrete post-cast assembled frame system
CN112900620A (en) * 2021-01-22 2021-06-04 清华大学 UHPC-based assembled combined beam-column joint and construction method thereof
CN113152663A (en) * 2021-02-08 2021-07-23 中国建筑第五工程局有限公司 Assembled building frame system
CN113417364A (en) * 2021-04-30 2021-09-21 中国建筑第五工程局有限公司 Precast concrete beam column connection structure and construction method thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206328863U (en) * 2016-11-30 2017-07-14 上海建工二建集团有限公司 Prefabricated assembled frame beam column structure
CN107989184A (en) * 2017-12-28 2018-05-04 上海建工二建集团有限公司 Prefabricated frame system and method for node prefabrication and UHPC post-cast connection
CN207829154U (en) * 2017-12-28 2018-09-07 上海建工二建集团有限公司 Prefabricated node and UHPC post-cast connected assembly type frame system
CN108149788A (en) * 2018-01-18 2018-06-12 广州大学 A kind of assembling frame structure and its construction method
CN108775085A (en) * 2018-07-09 2018-11-09 东南大学 The assembled integral concrete frame structure and its construction method of beam-ends connection
CN109083275A (en) * 2018-09-10 2018-12-25 西北民族大学 Prefabricated post and integral preform beam slab assembly node and its construction method
CN111576619A (en) * 2020-05-29 2020-08-25 三一筑工科技有限公司 Production method of high-strength concrete post-cast assembled frame system
CN112900620A (en) * 2021-01-22 2021-06-04 清华大学 UHPC-based assembled combined beam-column joint and construction method thereof
CN113152663A (en) * 2021-02-08 2021-07-23 中国建筑第五工程局有限公司 Assembled building frame system
CN113417364A (en) * 2021-04-30 2021-09-21 中国建筑第五工程局有限公司 Precast concrete beam column connection structure and construction method thereof

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