CN112127515A - Connecting device for precast concrete external wall panels - Google Patents

Connecting device for precast concrete external wall panels Download PDF

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Publication number
CN112127515A
CN112127515A CN202010853644.0A CN202010853644A CN112127515A CN 112127515 A CN112127515 A CN 112127515A CN 202010853644 A CN202010853644 A CN 202010853644A CN 112127515 A CN112127515 A CN 112127515A
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CN
China
Prior art keywords
concrete
channel
wallboard
vertical
precast concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010853644.0A
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Chinese (zh)
Inventor
于建兵
刘赛杰
张又超
许立
宋兴禹
马洪伟
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Yangzhou University
Original Assignee
Yangzhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yangzhou University filed Critical Yangzhou University
Priority to CN202010853644.0A priority Critical patent/CN112127515A/en
Publication of CN112127515A publication Critical patent/CN112127515A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74Removable non-load-bearing partitions; Partitions with a free upper edge modular coordination
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74Removable non-load-bearing partitions; Partitions with a free upper edge modular coordination
    • E04B2/82Removable non-load-bearing partitions; Partitions with a free upper edge modular coordination characterised by the manner in which edges are connected to the building; Means therefor; Special details of easily-removable partitions as far as related to the connection with other parts of the building

Abstract

The invention discloses a connecting device for a precast concrete external wallboard, which is firm in connection and convenient to construct. The invention discloses a connecting device for a precast concrete external wallboard, which is used for detachably and fixedly connecting a precast concrete wallboard (2) with a precast concrete column (1), and comprises a vertical channel (3) fixed on the connecting side surface of the concrete column (1), a transverse channel (4) fixed on the upper end surface of the concrete wallboard (2) and an L-shaped steel plate (5) with two arms provided with bolt holes (51 and 52) in advance; l shape shaped steel board (5) are through first tup screw (6a) and the removable fixed connection of vertical channel (3), through the removable fixed connection of second tup screw (6b) and horizontal channel (4).

Description

Connecting device for precast concrete external wall panels
Technical Field
The invention belongs to the technical field of constructional engineering fabricated concrete structures, and particularly relates to a connecting device for a prefabricated concrete externally-hung wallboard.
Background
At present, the fabricated building is one of the development directions of the modern buildings in China, and the precast concrete external wall panel is one of the important components of the fabricated building system. If the prefabricated concrete external wall panel is improperly connected with the main structure, no relative displacement exists between the prefabricated concrete external wall panel and the main structure, installation errors cannot be adjusted, the prefabricated concrete external wall panel is easy to damage under the action of external loads such as wind and earthquake, and potential safety hazards exist.
At present, the connection mode of the precast concrete wall panel and the main structure mainly comprises pure pendant type connection and pure embedded connection reinforced concrete pouring concrete connection.
The embedded connecting steel bars are poured to be connected, one row or two rows of embedded steel bars are arranged along the whole length direction of the external wall board, and then the concrete is used for integrally pouring the connecting steel bars.
When adopting pure pre-buried connecting reinforcement to pour concrete connection, though can guarantee wallboard safety, nevertheless it is great to carry out the connection construction degree of difficulty with whole wallboard length direction's pre-buried reinforcing bar, and the installation need use tools such as template to make the construction comparatively complicated, and simultaneously, the major structure must just can continue superstructure construction after finishing in the same floor's externally-hung wallboard installation, influences the construction progress.
The pure pendant type connection is connected through a metal pendant which is pre-installed on the wall board and the main structure; the metal pendant is structurally characterized by comprising a steel beam extending transversely from left to right and an upper branch connecting node and a lower branch connecting node which are arranged on the steel beam and distributed up and down to be used for installing an upper wallboard and a lower wallboard respectively (application number: CN201910768156.7 published: 20191108), wherein the lower branch connecting node comprises a lower first bolt and a lower second bolt which are installed on the steel beam and extend along the front-back direction, a screw rod of the lower first bolt extends forwards from the back surface of the lower wallboard into the lower wallboard and is locked, and a screw head of the lower second bolt abuts against the back surface of the lower wallboard, so that the adjustability and the stability are better.
When the pure pendant type connection is adopted, the safety coefficient cannot be ensured in the installation and use process and under the earthquake action, and the requirement on the earthquake resistance of the structure is higher when the pure pendant type connection is particularly applied to high-rise buildings;
therefore, the prior art has the problems that: the safety of the connecting device of the precast concrete external wallboard is not high;
and the defect of high construction difficulty caused by poor flexibility exists.
The above problems limit the application and development of the fabricated concrete frame structure.
Disclosure of Invention
The invention aims to provide a connecting device for a precast concrete external wallboard, which is firm in connection and convenient to construct.
The technical scheme for realizing the purpose of the invention is as follows:
the utility model provides a precast concrete externally-hung wallboard connecting device for with precast concrete wallboard 2 and the removable fixed connection of precast concrete post 1, its characterized in that:
the connecting device comprises a vertical channel 3 fixed on the connecting side surface of the concrete column 1, a transverse channel 4 fixed on the upper end surface of the concrete wallboard 2 and an L-shaped steel plate 5 with bolt holes 51 and 52 pre-arranged on two arms;
l shape shaped steel board 5 is through first tup screw 6a and 3 removable fixed connection of vertical channel, through the removable fixed connection of second tup screw 6b and horizontal channel 4.
Compared with the prior art, the invention has the following remarkable advantages:
1. and (3) firm connection: according to the invention, the channels are embedded in the precast columns and the precast slabs in advance, and the bolts can move freely within the length range of the channels, so that the problem that the main body structure and the precast slabs cannot be connected due to manufacturing errors is avoided; the L-shaped steel plate is provided with a bolt hole with a rectangular projection, and the bolt can displace to a certain extent along the length direction of the bolt hole under the action of seismic load, so that the integral deformation capacity is increased; the L-shaped steel plate can improve the integral energy consumption capacity of the joint; the connection process adopts bolt connection, certain size error is allowed in the installation process, and the energy is limited to achieve the purpose of shortening the construction period.
2. The construction is convenient: the invention can ensure the safety performance of the external precast concrete external wallboard, has better anti-seismic performance of the structure, can improve the connection efficiency between the precast slab and the main structure in the horizontal direction on site, and is beneficial to shortening the construction period. Has obvious technical advantages and has large-scale popularization and application prospect.
The invention is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a schematic structural view of a precast concrete outer wallboard connecting device according to the present invention.
Fig. 2 is a schematic three-dimensional structure of fig. 1.
Fig. 3 is a schematic structural view of an L-shaped steel plate with a bolt hole opened in fig. 1.
Fig. 4 is a schematic view of the anchoring channel structure in fig. 1.
Fig. 5 is a schematic structural view of the channel anchoring rib in fig. 1.
In the figure, a precast concrete column 1, a precast concrete wall panel 2, a vertical channel 3 and a transverse channel 4, an L-shaped steel plate 5, bolt holes 51 and 52, first hammerhead screws 6a and second hammerhead screws 6b, a vertical limiting sheet 7a, a horizontal limiting sheet 7b, a vertical slide block 8a, a transverse slide block 8b and anchoring ribs 9a and 9 b.
Detailed Description
As shown in fig. 1 and 2, the precast concrete outer-hanging wall panel connecting device of the invention is used for detachably and fixedly connecting a precast concrete wall panel 2 with a precast concrete column 1, and comprises a vertical channel 3 fixed on the connecting side surface of the concrete column 1, a transverse channel 4 fixed on the upper end surface of the concrete wall panel 2, and an L-shaped steel plate 5 with bolt holes 51 and 52 pre-arranged on two arms;
l shape shaped steel board 5 is through first tup screw 6a and 3 removable fixed connection of vertical channel, through the removable fixed connection of second tup screw 6b and horizontal channel 4.
As shown in fig. 3, rectangular holes 51 and 52 with arc-shaped ends are formed in advance on both arms of the L-shaped steel plate 5.
As an improvement, as shown in fig. 1, the device further comprises a vertical slide block 8a and a horizontal slide block 8 b;
the vertical sliding block 8a is arranged on the inner side of the vertical channel 3 and is connected with the end of the first hammer screw 6a in a matching way;
the transverse sliding block 8b is arranged on the inner side of the transverse channel 4 and is connected with the end of the second hammer screw 6b in a matching way;
as a further improvement, the device also comprises a vertical limiting piece 7a and a horizontal limiting piece 7 b;
the vertical limiting piece 7a is arranged on the outer side of the vertical arm of the L-shaped steel plate 5 and sleeved on the first hammer screw 6 a;
the horizontal limiting piece 7b is arranged on the upper side of the horizontal arm of the L-shaped steel plate 5 and sleeved on the second hammer head screw 6 b.
The vertical channel 3 is fixedly connected with a steel bar framework of the precast column 1 through an anchoring rib 9a and is integrally cast and fixed on the connecting side surface of the concrete column 1 with the concrete column 1;
and the transverse channel 4 is fixedly connected with the steel bar framework of the concrete wallboard 2 through the anchoring rib 9b and is integrally poured and fixed on the upper end surface of the concrete wallboard 2 together with the concrete wallboard 2.
The anchoring channel 3 and the anchoring channel 4 are respectively fixed on the precast column 1 and the precast slab 2 by adopting metal clamps 9a and 9 b;
hammer bolt and hammer head screws 6a and 6b are respectively pre-installed on the anchoring channel 3 and the anchoring channel 4, and sliding blocks 8a and 8b are installed at the hammer head part of the bolts, so that the hammer head bolts can freely slide in the channels;
and hammer head screws 6a and 6b provided with sliding blocks penetrate into the L-shaped steel plate, are respectively provided with a vertical limiting piece 7a and a horizontal limiting piece 7b, nuts are screwed, concrete is poured on the upper part of the laminated slab, and the connection between the prefabricated slab and the prefabricated column is completed.
The connecting device between the precast concrete horizontal plate and the precast column has the following field construction and assembly processes:
fixing the channel 3 on one side surface of the prefabricated column by adopting a metal clamp 9a, sleeving a sliding block 8a on the end part of a hammer screw 6a, and installing the hammer screw with the sliding block into the channel 3; fixing the channel 4 on the upper surface of the precast slab by adopting a metal clamp 9b, sleeving a sliding block 8b on the end part of a hammer screw 6b, and installing the hammer screw with the sliding block into the channel 4; hammerhead screws 6a and 6b pre-installed in the channel 3 and the channel 4 penetrate through bolt holes of the L-shaped steel plate 5, vertical limiting pieces 7a and 7b are screwed on the hammerhead screws 6a and 6b, nuts are screwed, concrete is poured on a precast slab laminated layer, and connection between the precast slabs and the precast columns is achieved.
According to the invention, the principle of energy consumption and shock absorption is fully utilized, and the bolt hole with a rectangular projection is formed in the L-shaped steel plate, so that the bolt can have certain deformation capacity along the bolt hole direction under the action of earthquake load of the connecting device, and the earthquake resistance of the whole structure is improved; and the L-shaped steel can increase the energy consumption capacity of the connecting node.
The connecting device adopts the bolts for connection, is simple to operate, and can effectively improve the on-site construction efficiency, thereby shortening the construction period; the screws of the connecting device are all arranged in the anchoring channel with the sliding blocks and can freely slide along the direction of the channel, thereby bringing great convenience to the field assembly work; has obvious technical advantages and has large-scale popularization and application prospect.
The advantages include:
(1) according to the invention, the channels are arranged on the prefabricated parts, so that the field installation is more convenient, and the field working efficiency is improved;
(2) the bolt with the sliding block is arranged in the channel, and the bolt can freely slide in the channel, so that the trouble that the connection cannot be carried out due to installation errors is avoided;
(3) the L-shaped steel plate can be prefabricated in advance, and is assembled and constructed, so that energy is saved, pollution is avoided, and construction is safe and reliable;
(4) the invention adopts the bolt pore canal with the rectangular projection, can improve the degeneration capability of the connection node in a limited way and improve the anti-seismic performance of the whole structure;
(5) the connecting device is fixed by bolts, and has the advantages of simple and reliable connecting mode and accurate position.
As shown in fig. 3, the L-shaped steel plate (5) of the present invention can be prefabricated in a factory, and holes are formed according to the connection requirement of the prefabricated plate and the prefabricated column.
It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.

Claims (5)

1. The utility model provides a precast concrete externally-hung wallboard connecting device for with precast concrete wallboard (2) and the removable fixed connection of precast concrete post (1), its characterized in that:
the connecting device comprises a vertical channel (3) fixed on the connecting side surface of the concrete column (1), a transverse channel (4) fixed on the upper end surface of the concrete wallboard (2) and an L-shaped steel plate (5) with bolt holes (51, 52) pre-opened on two arms;
l shape shaped steel board (5) are through first tup screw (6a) and the removable fixed connection of vertical channel (3), through the removable fixed connection of second tup screw (6b) and horizontal channel (4).
2. The precast concrete outer-hanging wall panel connecting device according to claim 1, wherein:
rectangular holes (51, 52) with two arc-shaped ends are formed in the two arms of the L-shaped steel plate (5) in advance.
3. The precast concrete outer-hanging wall panel connecting device according to claim 1, wherein:
the device also comprises a vertical slide block (8a) and a transverse slide block (8 b);
the vertical sliding block (8a) is arranged on the inner side of the vertical channel (3) and is connected with the end of the first hammer screw (6a) in a matching way;
the transverse sliding block (8b) is arranged on the inner side of the transverse channel (4) and is connected with the end of the second hammer screw (6b) in a matching mode.
4. The precast concrete outer-hanging wall panel connecting device according to claim 3, wherein:
the device also comprises a vertical limiting sheet (7a) and a horizontal limiting sheet (7 b);
the vertical limiting piece (7a) is arranged on the outer side of a vertical arm of the L-shaped steel plate (5) and sleeved on the first hammer head screw (6 a);
the horizontal limiting piece (7b) is arranged on the upper side of the horizontal arm of the L-shaped steel plate (5) and sleeved on the second hammer head screw (6 b).
5. The precast concrete outer-hanging wall panel connecting device according to claim 1, wherein:
the vertical channel (3) is fixedly connected with a steel bar framework of the precast column (1) through an anchoring rib (9a), and is integrally cast and fixed on the connecting side surface of the concrete column (1) with the concrete column (1);
the transverse channel (4) is fixedly connected with the steel reinforcement framework of the concrete wallboard (2) through the anchoring ribs (9b) and is integrally poured and fixed on the upper end face of the concrete wallboard (2) with the concrete wallboard (2).
CN202010853644.0A 2020-08-24 2020-08-24 Connecting device for precast concrete external wall panels Pending CN112127515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010853644.0A CN112127515A (en) 2020-08-24 2020-08-24 Connecting device for precast concrete external wall panels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010853644.0A CN112127515A (en) 2020-08-24 2020-08-24 Connecting device for precast concrete external wall panels

Publications (1)

Publication Number Publication Date
CN112127515A true CN112127515A (en) 2020-12-25

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ID=73847031

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010853644.0A Pending CN112127515A (en) 2020-08-24 2020-08-24 Connecting device for precast concrete external wall panels

Country Status (1)

Country Link
CN (1) CN112127515A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080033203A (en) * 2008-03-06 2008-04-16 황준환 The unit jointing structures on cellular framing reinforced concrete construction by using curtain wall type two-sided closure
CN103821265A (en) * 2014-02-28 2014-05-28 北京建筑大学 Self-resetting energy dissipation node for externally hung aerated concrete wallboard and construction method thereof
CN104179278A (en) * 2014-09-12 2014-12-03 上海市城市建设设计研究总院 Hidden two-in-one dry type connection joint for prefabricated externally-hung wallboards
CN105064510A (en) * 2015-07-29 2015-11-18 东南大学 Prefabricated concrete external wall plate connecting device
CN204804109U (en) * 2015-03-23 2015-11-25 北京建筑大学 Outer wall hanging plate straight peen of aerated concrete node that slides
CN107338887A (en) * 2017-07-18 2017-11-10 吉林建筑大学 Only have the connection method of flat out of plane constraint and upper connecting node at the top of out-hung panel
CN206655356U (en) * 2017-03-30 2017-11-21 山东同圆设计集团有限公司 A kind of precast facade hanging plate and agent structure attachment means
CN207003748U (en) * 2017-07-18 2018-02-13 吉林建筑大学 A kind of upper connecting node of precast concrete out-hung panel
CN209941964U (en) * 2019-03-27 2020-01-14 长沙理工大学 Limiting device for prefabricated concrete externally-hung wallboard and main structure

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080033203A (en) * 2008-03-06 2008-04-16 황준환 The unit jointing structures on cellular framing reinforced concrete construction by using curtain wall type two-sided closure
CN103821265A (en) * 2014-02-28 2014-05-28 北京建筑大学 Self-resetting energy dissipation node for externally hung aerated concrete wallboard and construction method thereof
CN104179278A (en) * 2014-09-12 2014-12-03 上海市城市建设设计研究总院 Hidden two-in-one dry type connection joint for prefabricated externally-hung wallboards
CN204804109U (en) * 2015-03-23 2015-11-25 北京建筑大学 Outer wall hanging plate straight peen of aerated concrete node that slides
CN105064510A (en) * 2015-07-29 2015-11-18 东南大学 Prefabricated concrete external wall plate connecting device
CN206655356U (en) * 2017-03-30 2017-11-21 山东同圆设计集团有限公司 A kind of precast facade hanging plate and agent structure attachment means
CN107338887A (en) * 2017-07-18 2017-11-10 吉林建筑大学 Only have the connection method of flat out of plane constraint and upper connecting node at the top of out-hung panel
CN207003748U (en) * 2017-07-18 2018-02-13 吉林建筑大学 A kind of upper connecting node of precast concrete out-hung panel
CN209941964U (en) * 2019-03-27 2020-01-14 长沙理工大学 Limiting device for prefabricated concrete externally-hung wallboard and main structure

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