CN107842132B - Connecting device and connecting method for bending shear resistant precast reinforced concrete shear wall - Google Patents
Connecting device and connecting method for bending shear resistant precast reinforced concrete shear wall Download PDFInfo
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- CN107842132B CN107842132B CN201711342291.2A CN201711342291A CN107842132B CN 107842132 B CN107842132 B CN 107842132B CN 201711342291 A CN201711342291 A CN 201711342291A CN 107842132 B CN107842132 B CN 107842132B
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- concrete shear
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 70
- 238000005452 bending Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 185
- 239000010959 steel Substances 0.000 claims abstract description 185
- 239000000463 material Substances 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
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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)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a prefabricated reinforced concrete shear wall connecting device resistant to bending shear, which comprises a connecting steel plate, an upper connecting device and a lower connecting device, wherein the upper connecting device and the lower connecting device are respectively provided with main body steel, a convex steel plate and a longitudinal steel bar ring, and the longitudinal steel bar ring is fixedly connected with the main body steel; the two connecting steel plates are respectively connected with the upper connecting device and the lower connecting device through main body steel; the convex steel plate is welded with the main body steel flange; the main body steel is T-shaped steel, a first opening is formed in the T-shaped steel, a steel sleeve matched with the first opening is arranged in the first opening, a second opening matched with the steel sleeve is formed in the connecting steel plate, and the connecting steel plate is connected with the T-shaped steel through a first bolt; the first bolt sequentially passes through the second opening, the steel sleeve and the first opening, and a nut matched with the first bolt is arranged on the first bolt.
Description
Technical Field
The invention relates to the technical field of civil engineering building structure engineering, in particular to a connecting device and a connecting method for a prefabricated reinforced concrete shear wall with bending shear resistance.
Background
The connection mode between prefabricated reinforced concrete members of the fabricated shear wall is an important point of structural research of the fabricated shear wall, and reliable connection between the prefabricated reinforced concrete members is an important guarantee of structural safety and life safety of people. At present, the research on the connection mode of the precast reinforced concrete shear wall mostly considers reliable connection of longitudinal steel bars, such as a sleeve grouting technology, a longitudinal steel bar reserved round hole post-pouring connection technology and the like, which are widely applied in engineering practice, but are used as important devices for transmitting acting force in the wall body, and have high requirements on grouting material strength. The bolt connection technology is widely applied in the field of steel structures, and is introduced into the connection of the fabricated reinforced concrete shear wall by utilizing the advantages of the bolt connection technology, and by designing and using reasonable connection and force transmission devices, not only can the longitudinal load transmitted by longitudinal reinforcing steel bars be transmitted, but also the connecting steel plates can bear part of horizontal load. Therefore, the device and the method for connecting the precast reinforced concrete shear walls are provided based on the effective connection between precast reinforced concrete shear wall components and the effective transmission of the acting force of the longitudinal stress steel bars.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a connecting device and a connecting method for a prefabricated reinforced concrete shear wall with bending shear resistance.
The specific technical scheme of the invention is as follows:
the connecting device comprises a connecting steel plate, an upper connecting device and a lower connecting device, wherein the upper connecting device and the lower connecting device are respectively provided with main body steel and longitudinal steel bar rings, and the longitudinal steel bar rings are fixedly connected with the main body steel; the connecting steel plates are two, and are respectively connected with the upper connecting device and the lower connecting device through main body steel. The main body steel is T-shaped steel, a first opening is formed in the T-shaped steel, a steel sleeve matched with the first opening is arranged in the first opening, a second opening matched with the steel sleeve is formed in the connecting steel plate, and the connecting steel plate is connected with the T-shaped steel through a first bolt; the first bolt sequentially passes through the second opening, the steel sleeve and the first opening, and a nut matched with the first bolt is arranged on the first bolt.
In order to further strengthen the connection of the precast reinforced concrete shear wall, the T-shaped steel is also provided with a convex steel plate, and the convex steel plate is provided with a third opening; two convex steel plates on the T-shaped steel of the lower connecting device are arranged in a group and are parallel, and a gap is formed between the two convex steel plates; the convex steel plate on the T-shaped steel of the upper connecting device is matched with the gap; the upper connecting device and the lower connecting device are connected through a second bolt, and the second bolt passes through a third opening of the upper connecting device and a third opening of the lower connecting device. The convex steel plates on the T-shaped steel of the lower connecting device comprise two groups which are respectively arranged at two ends of the T-shaped steel. The longitudinal steel bar rings are provided with a plurality of steel bar rings and welded with the T-shaped steel, and the longitudinal steel bar rings are closed steel rings.
In order to improve the connection strength of the precast reinforced concrete shear wall, the longitudinal steel bar rings are welded with the first stirrups and the second stirrups respectively; the first stirrups are provided with a plurality of first stirrups, and each first stirrup is connected with two adjacent longitudinal steel bar rings; the second stirrups are provided with a plurality of, and every second stirrup is connected with all longitudinal reinforcement rings. The upper connecting device and the lower connecting device are respectively provided with a limiting reinforcing bar, and the limiting reinforcing bars are welded with the convex steel plates; and the limit steel bars are welded with the ends of the longitudinal steel bar rings.
The connecting method of the bending shear resistant precast reinforced concrete shear wall connecting device specifically comprises the following steps:
step 1: punching holes on a T-shaped steel web at intervals, enabling a steel sleeve to pass through a web hole and be welded with the inner wall of a flange of the T-shaped steel, enabling a convex steel plate to be welded with the back surface of the flange of the T-shaped steel, enabling a longitudinal steel bar ring to adopt a longitudinal closed stress steel bar ring, and enabling the T-shaped steel to be welded with the longitudinal steel bar ring to obtain an upper connecting device and a lower connecting device;
step 2: pouring concrete to the upper and lower connecting devices to sequentially obtain a first precast reinforced concrete shear wall, a second precast reinforced concrete shear wall and a third precast reinforced concrete shear wall, and reserving arc-shaped grooves at two ends of a joint of the shear walls;
step 3: firstly, installing a first precast reinforced concrete shear wall, butting a second precast reinforced concrete shear wall with the first precast reinforced concrete shear wall in a hoisting mode, connecting convex steel plates at joints at reserved arc grooves by using second bolts, connecting the two precast walls into a whole by using first bolts through the connecting steel plates, and injecting compact concrete materials from reserved grouting openings by using a grouting machine after the connection is completed, filling the arc grooves at two ends of the joints, and spraying grouting materials from a grouting outlet to be a filling standard;
step 4: and (3) repeating the operation process of the step (3) and connecting the third precast reinforced concrete shear wall and the second precast reinforced concrete shear wall.
In the step 1, holes are punched at intervals at the root of the T-shaped steel web plate, and the convex steel plate is a round-angle convex steel plate.
Compared with the prior art, the invention has the following advantages:
1. the prefabricated reinforced concrete shear wall is convenient to hoist and connect, the prefabricated reinforced concrete shear walls of the upper part and the lower part are connected into a whole through bolts and connecting steel plates, and the operation is simple and the construction is convenient;
2. the connecting device of the precast reinforced concrete shear wall has definite force transmission route, the longitudinal steel bars in the upper precast reinforced concrete shear wall and the lower precast reinforced concrete shear wall are connected into a whole through the embedded connecting device, the vertical load transmitted by the longitudinal closed steel bar ring in the upper precast shear wall is transmitted to the longitudinal closed stress steel bar ring of the lower precast reinforced concrete shear wall through the novel force transmission connecting device and is downwards transmitted, and the force transmission route is definite and reasonable;
3. the connecting device of the precast reinforced concrete shear wall solves the problem of sliding of the horizontal joint surface, filling materials in the arc-shaped grooves reserved at the two ends of the joint and two connecting steel plates on the side can bear horizontal load under the combined action of the filling materials and the two connecting steel plates on the side, and the phenomenon of unrecoverable sliding of the connecting surface of the precast reinforced concrete shear wall is avoided;
4. the connecting device of the precast reinforced concrete shear wall is arranged on a construction site, the complicated working procedure of pouring a post-pouring strip is eliminated, and the integrity of the shear wall is maintained by reliable connection of bolts and steel plates;
5. the connecting device of the precast reinforced concrete shear wall solves the problems of complicated and crowded reinforcement distribution at joints of precast components in a construction site;
6. the connecting device of the precast reinforced concrete shear wall can be easily realized by utilizing the existing processing technology, and has strong workability.
Drawings
FIG. 1 is a schematic diagram showing the internal connection of joints of a precast reinforced concrete shear wall and the assembly after the connection is completed;
FIG. 2 is a schematic illustration of a joint connection between precast reinforced concrete shear wall members of the present invention;
FIG. 3 is a cross-sectional view of a joint between precast reinforced concrete shear wall members of the present invention;
FIG. 4 is a top view of a joint connection between precast reinforced concrete shear wall members of the present invention;
FIG. 5 is a schematic three-dimensional view of a third precast reinforced concrete shear wall according to the present invention;
FIG. 6 is a schematic three-dimensional view of a second precast reinforced concrete shear wall according to the present invention;
FIG. 7 is a schematic three-dimensional view of a first precast reinforced concrete shear wall according to the present invention;
FIG. 8 is a three-dimensional schematic view of the overall connection between precast reinforced concrete shear wall elements of the present invention;
wherein, 1: t-section steel, 2: first bolt, 3: steel sleeve, 4: connecting steel plates, 5: nut, 6: longitudinal rebar ring, 7: first stirrup, 8: third precast reinforced concrete shear wall, 9: second precast reinforced concrete shear wall, 10: first precast reinforced concrete shear wall, 11: second stirrup, 12: limit steel bar, 13: convex steel plate, 14: second bolt, 15: grouting port, 16: and a pulp outlet.
Detailed Description
The following describes the connecting device and the connecting method of the prefabricated reinforced concrete shear wall with bending shear in detail by referring to the attached drawings.
As shown in fig. 1, the prefabricated reinforced concrete shear wall connecting device comprises a connecting steel plate 4, an upper connecting device and a lower connecting device, wherein the upper connecting device and the lower connecting device are respectively provided with T-shaped steel 1 and longitudinal steel rings 6, the longitudinal steel rings 6 are provided with a plurality of longitudinal steel rings and welded with the T-shaped steel 1, and the longitudinal steel rings 6 are closed steel rings. The connecting steel plates 4 are provided with two connecting devices which are respectively connected with the upper connecting device and the lower connecting device through the T-shaped steel 1. The T-shaped steel 1 is provided with a first opening, a steel sleeve 3 matched with the first opening is arranged in the first opening, the connecting steel plate 4 is provided with a second opening matched with the steel sleeve 3, and the connecting steel plate 4 is connected with the T-shaped steel 1 through a first bolt 2; the first bolt 2 sequentially passes through the second opening, the steel sleeve 3 and the first opening, and a nut 5 matched with the first bolt 2 is arranged on the first bolt 2; the T-shaped steel 1 is also provided with a convex steel plate 13, and the convex steel plate 13 is provided with a third opening; two convex steel plates 13 on the T-shaped steel 1 of the lower connecting device are arranged in a group in parallel, two groups are arranged, the two groups are respectively arranged at two ends of the T-shaped steel 1, and a gap is arranged between the two convex steel plates 13; the convex steel plate 13 on the T-shaped steel 1 of the upper connecting device is matched with the gap; the upper and lower connection means are connected by a second bolt 14, the second bolt 14 being arranged through the third opening of the upper connection means and the third opening of the lower connection means.
As shown in fig. 2, the upper and lower connecting devices are provided with a first stirrup 7 and a second stirrup 11 which are respectively connected with the longitudinal steel bar ring 6 in a binding way; the first stirrups 7 are provided in plurality, and each first stirrup 7 is connected with two adjacent longitudinal steel bar rings 6; the second stirrups 11 are also provided in plurality, and each second stirrup 11 is in binding connection with all the longitudinal reinforcement rings 6. The upper connecting device and the lower connecting device are respectively provided with a limiting reinforcing steel bar 12, and the limiting reinforcing steel bar 12 is welded with the flange of the T-shaped steel 1; the limit steel bars 12 are welded with the ends of the longitudinal steel bar rings 6.
A connecting method of a bending shear resistant precast reinforced concrete shear wall connecting device comprises the following steps:
step 1: punching holes at intervals on the root of a web plate of the T-shaped steel 1, enabling a steel sleeve 3 to pass through a web plate hole and be welded with the inner wall of a flange of the T-shaped steel 1, enabling a convex steel plate 13 to be welded with the back surface of the flange of the T-shaped steel 1, enabling a longitudinal steel bar ring 6 to adopt a longitudinal closed stress steel bar ring, and enabling the T-shaped steel 1 to be welded with the longitudinal steel bar ring 6 to obtain an upper connecting device and a lower connecting device;
step 2: pouring concrete to the upper and lower connecting devices obtained in the step 1, respectively obtaining a first precast reinforced concrete shear wall 10, a second precast reinforced concrete shear wall 9 and a third precast reinforced concrete shear wall 8 in sequence, and reserving arc-shaped grooves at two ends of a joint of the shear walls;
step 3: firstly, installing a first precast reinforced concrete shear wall 10 in the step 2, butting a second precast reinforced concrete shear wall 9 with the first precast reinforced concrete shear wall 10 in a hoisting mode, connecting a convex steel plate 13 at a joint by using a second bolt 14 at a reserved arc groove, connecting the two precast walls into a whole by using the first bolt 2 through a connecting steel plate 4, and injecting a dense concrete material from a reserved grouting opening 15 by using a grouting machine after the connection is completed, filling the arc grooves at two ends of the joint, and spraying grouting material from a grouting opening 16 to be a filling standard;
step 4: and (3) repeating the operation process of the step (3) and connecting the third precast reinforced concrete shear wall (8) and the second precast reinforced concrete shear wall (9).
The novel force transmission and connection device is embedded in the precast reinforced concrete member, the precast reinforced concrete shear wall is connected into a whole through reliable connection of the bolts, and meanwhile, vertical load transmitted by the upper longitudinal steel bar can be transmitted to the lower longitudinal steel bar through the connection bolts and the connection steel plates in the embedded perforated T-shaped steel device.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The connecting device for the prefabricated reinforced concrete shear wall of the bending shear comprises a connecting steel plate (4) and is characterized by further comprising an upper connecting device and a lower connecting device, wherein the upper connecting device and the lower connecting device are respectively provided with main body steel and a longitudinal steel bar ring (6), and the longitudinal steel bar ring (6) is fixedly connected with the main body steel; the two connecting steel plates (4) are respectively connected with the upper connecting device and the lower connecting device through main body steel; the main body steel is T-shaped steel (1), a first opening is formed in the T-shaped steel (1), a steel sleeve (3) matched with the first opening is arranged in the first opening, a second opening matched with the steel sleeve (3) is formed in the connecting steel plate (4), and the connecting steel plate (4) is connected with the T-shaped steel (1) through a first bolt (2); the first bolt (2) sequentially passes through the second opening, the steel sleeve (3) and the first opening, and a nut (5) matched with the first bolt (2) is arranged on the first bolt (2); a convex steel plate (13) is further arranged on the T-shaped steel (1), and a third opening is formed in the convex steel plate (13); two convex steel plates (13) on the T-shaped steel (1) of the lower connecting device are arranged in a group in parallel, and a gap is formed between the two convex steel plates (13); a convex steel plate (13) on the T-shaped steel (1) of the upper connecting device is matched with the gap; the upper connecting device and the lower connecting device are connected through a second bolt (14), and the second bolt (14) passes through a third opening of the upper connecting device and a third opening of the lower connecting device; the longitudinal steel bar rings (6) are provided with a plurality of steel bars and are welded with the T-shaped steel (1), and the longitudinal steel bar rings (6) are closed steel rings; the longitudinal steel bar ring (6) is welded with the first stirrup (7) and the second stirrup (11) respectively; the first stirrups (7) are provided with a plurality of stirrups, and each first stirrup (7) is connected with two adjacent longitudinal reinforcement rings (6); the second stirrups (11) are provided with a plurality of second stirrups, and each second stirrup (11) is connected with all longitudinal reinforcement rings (6); the upper connecting device and the lower connecting device are respectively provided with a limiting steel bar (12), and the limiting steel bars (12) are welded with the T-shaped steel (1); and the limit steel bars (12) are welded with the end parts of the longitudinal steel bar rings (6).
2. A precast reinforced concrete shear wall connection device according to claim 1, wherein the convex steel plates (13) on the T-section steel (1) of the lower connection device comprise two groups, which are respectively arranged at two ends of the T-section steel (1).
3. A method of connecting a shear block precast reinforced concrete shear wall connection device according to claim 2, comprising the steps of:
step 1: punching holes on a web plate of the T-shaped steel (1) at intervals, enabling a steel sleeve (3) to penetrate through a web plate hole and be welded with the inner wall of a flange of the T-shaped steel (1), enabling a convex steel plate (13) to be welded with the back surface of the flange of the T-shaped steel (1), enabling a longitudinal steel bar ring (6) to adopt a longitudinal closed stress steel bar ring, and enabling the T-shaped steel (1) to be welded with the longitudinal steel bar ring (6) to obtain an upper connecting device and a lower connecting device;
step 2: pouring concrete to the upper and lower connecting devices obtained in the step 1 to respectively obtain a first precast reinforced concrete shear wall (10), a second precast reinforced concrete shear wall (9) and a third precast reinforced concrete shear wall (8) in sequence, and reserving arc-shaped grooves at two ends of a joint of the shear walls;
step 3: firstly installing the first precast reinforced concrete shear wall (10) in the step 2, butting the second precast reinforced concrete shear wall (9) with the first precast reinforced concrete shear wall (10) in a hoisting mode, connecting a convex steel plate (13) at a joint at a reserved arc groove by using a second bolt (14), connecting the two precast walls into a whole by using the first bolt (2) through the connecting steel plate (4), and injecting a dense concrete material from a reserved grouting opening (15) by using a grouting machine after the connection is completed, filling the arc grooves at two ends of the joint, and spraying grouting materials from a grouting opening (16) to be full of standards;
step 4: and (3) repeating the operation process of the step (3), and connecting a third precast reinforced concrete shear wall (8) and a second precast reinforced concrete shear wall (9).
4. A method of connecting a prefabricated reinforced concrete shear wall according to claim 3, wherein in step 1, holes are punched at intervals at the root of the web of the T-section steel (1).
5. The method for connecting a prefabricated reinforced concrete shear wall according to claim 4, wherein the convex steel plate (13) in the step 1 is a round-corner convex steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711342291.2A CN107842132B (en) | 2017-12-14 | 2017-12-14 | Connecting device and connecting method for bending shear resistant precast reinforced concrete shear wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711342291.2A CN107842132B (en) | 2017-12-14 | 2017-12-14 | Connecting device and connecting method for bending shear resistant precast reinforced concrete shear wall |
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| CN107842132B true CN107842132B (en) | 2024-01-09 |
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Families Citing this family (5)
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|---|---|---|---|---|
| CN108412079A (en) * | 2018-05-18 | 2018-08-17 | 华南理工大学 | A kind of fabricated shear wall horizontal connection structure and construction method |
| CN109356281A (en) * | 2018-11-12 | 2019-02-19 | 山东大学 | A kind of prefabricated reinforcing bar-combined concrete shear wall splicing apparatus and application method |
| CN111535498B (en) * | 2020-07-02 | 2020-10-16 | 中国船舶重工集团国际工程有限公司 | Prefabricated stiff concrete shear wall plate with steel beam connecting keys, assembled stiff concrete shear wall and manufacturing method |
| CN113235771B (en) * | 2021-05-26 | 2022-08-26 | 华能秦煤瑞金发电有限责任公司 | Easily repaired assembled shear wall |
| CN118187322A (en) * | 2024-05-13 | 2024-06-14 | 中建五局第三建设有限公司 | Full prefabricated steel node shear wall structure |
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| CN107842132A (en) | 2018-03-27 |
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