CN209891422U - Connecting structure of prefabricated staircase and shear wall - Google Patents
Connecting structure of prefabricated staircase and shear wall Download PDFInfo
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- CN209891422U CN209891422U CN201920356115.2U CN201920356115U CN209891422U CN 209891422 U CN209891422 U CN 209891422U CN 201920356115 U CN201920356115 U CN 201920356115U CN 209891422 U CN209891422 U CN 209891422U
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Abstract
The utility model provides a connection structure of a prefabricated staircase and a shear wall, wherein a groove is reserved on the side edge of the tread of a prefabricated staircase section close to one side of the shear wall, a pre-buried outlet rib arranged in the horizontal direction is arranged in the groove, and the pre-buried outlet rib is divided into a temporary exposed part and a hidden part; the temporary exposed part is arranged in the groove and is fixedly connected with one end of a threaded short rib or a chemically-planted short rib arranged in the shear wall; and the groove is finally blocked by micro-expansion high-grade concrete. The utility model can adjust and compensate the errors generated by the prefabricated components and the site construction after the components are hoisted in place, and can adopt the construction process of outer scaffold and outer mold, thereby having low cost, short construction period and high production efficiency; the positioning precision can be effectively controlled in the processing process of the prefabricated part, and the weakening of the strength and the rigidity of the wall body of the shear wall can be effectively avoided.
Description
Technical Field
The utility model relates to a building field specifically, relates to a connection structure of prefabricated stair and shear force wall, especially relates to the connection structure of board-like prefabricated stair and shear force wall among assembly integral frame-cast-in-place shear force wall and the assembly integral shear force wall structure.
Background
In recent years, with the background of modernization of the building industry and the great development of green buildings, as the fabricated buildings are popularized all over the country, fabricated building projects are built like bamboo shoots in spring all over the country. In the structures of the assembled integral frame, the cast-in-place shear wall and the assembled integral shear wall, the staircase range is used for ensuring the effective transmission of horizontal action and the stability of the shear wall at the side edge of the staircase section, so that the virtual existence of the shear wall is avoided, and the current concept design and examination organization requires that the staircase section is effectively and reliably connected with the cast-in-place shear wall.
In addition, in the fabricated building, in order to meet the requirement of prefabrication rate, the plate stairway is selected to be prefabricated according to the preferred sequence of prefabricated components, which is a common consensus in the industry. A problem that arises is that the connection of the prefabricated staircase to the cast-in-place shear wall loses the convenience of the conventional non-fabricated project. At present, the common method is to centralize ribs at the side edges of the prefabricated stairway (strong substitution of the ribs with the transverse distribution ribs of the stairway), reserve post-cast holes at corresponding positions of the cast-in-situ shear wall, lift the stairway to be in place after the cast-in-situ shear wall reaches the strength, and finally block the reserved holes on the shear wall, so that the connection between the prefabricated stairway and the cast-in-situ shear wall is realized.
The traditional connection method of the plate-type prefabricated bench and the cast-in-place shear wall has the following defects: (1) the post-casting quality of the reserved hole of the cast-in-place shear wall is difficult to guarantee because the conventional side-cast concrete at the reserved hole is difficult to vibrate and cannot guarantee the compaction effect, so that the strength and the rigidity of the wall body of the shear wall are weakened; (2) if the shear wall adopts a prefabricated embedded shear wall, the positioning fit degree of the ribs at the side edge of the stair section plate and the holes reserved on the prefabricated wall is lower; (3) if the shear wall adopts a prefabricated embedded shear wall and adopts a construction process without external scaffold and external mold, the post-pouring of the reserved hole cannot be constructed; (4) because the ladder sections are hoisted after the target shear wall reaches the strength, the ladder sections in the construction hoisting have horizontal pushing action, which greatly increases the hoisting difficulty and disturbs the construction organization; (5) the ribs are concentrated on the side edges of the bench, so that certain difficulties are brought to finished product transportation, hoisting and finished product protection.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims at providing a connecting structure of a prefabricated staircase and a shear wall, which can not only adjust and compensate the errors generated by the prefabricated components and the site construction after the components are hoisted in place, but also can adopt the construction process of an external scaffold and an external mold, and has low cost, short construction period and high production efficiency; meanwhile, if the prefabricated shear wall is adopted, the positioning precision can be effectively controlled in the machining process of the prefabricated part, and compared with the traditional method, the construction is convenient, the weakening of the strength and the rigidity of the wall body of the shear wall can be effectively avoided, and the effective and reliable connection between the side edge of the prefabricated stair tread and the cast-in-place or prefabricated shear wall is realized.
According to one aspect of the utility model, a connecting structure of a prefabricated staircase and a shear wall is provided, a groove (1) is reserved on the side edge of the tread of the prefabricated staircase section close to the shear wall, a pre-buried steel bar (2) arranged in the horizontal direction is arranged in the groove (1), and the pre-buried steel bar (2) is divided into a temporary exposed part (21) and a hidden part (22); the hidden part (22) is embedded in the ladder section, the tail end of the hidden part is bound with the transversely distributed ribs (3) in the ladder plate nearby and bent to form ribs to enter the grooves, and the temporary exposed part (21) is arranged in the grooves (1) and is fixedly connected with one end of a threaded short rib or a chemically-planted short rib arranged in the shear wall; the temporarily exposed parts (21) of the groove (1) are connected and fixed and then are blocked by micro-expansion high-grade concrete.
Preferably, the bent ribs are bent at an angle of 1: 6.
Preferably, the distance L between the tail end of the temporary exposed part (21) and the side edge of the prefabricated staircase is 20 mm.
Preferably, the temporary exposed part (21) and the threaded short rib or the chemical planting short rib are fixedly connected in a double-faced parallel welding 5d mode.
Preferably, the total amount of the pre-embedded ribs (2) and the total amount of all the transverse distribution ribs (3) of the ladder section are replaced with equal strength.
Preferably, the groove (1) is arranged on the tread of the prefabricated stair tread for one tread and one groove.
Preferably, the groove (1) is a tapered groove.
Preferably, the other end of the short thread rib is screwed into a straight thread sleeve which is pre-embedded in the near-bench surface of the prefabricated or cast-in-situ shear wall, and the arrangement position of the straight thread sleeve in the wall surface is strictly positioned according to the position of a reserved rib in a prefabricated bench groove.
Preferably, the hidden end of the straight thread sleeve is welded with a cross steel bar welded or bound with the shear wall steel bar mesh.
Preferably, the other end of the chemical short-planting rib is screwed into a rib planting hole which is arranged on the near-ladder section surface of the prefabricated or cast-in-situ shear wall.
The utility model discloses a construction process includes following step:
step one, reserving grooves at one side of a tread side of a prefabricated stair section close to a shear wall, wherein one groove is arranged on one tread, a pre-buried rib in the horizontal direction is arranged in each groove, the tail end of a hidden part of the pre-buried rib in the stair section is bound with transverse distribution ribs in a stair slab nearby, and the rib is bent to enter the groove according to the angle 1: 6;
step two, pre-embedding a straight thread sleeve near the bench face of the prefabricated or cast-in-place shear wall, wherein the arrangement position of the straight thread sleeve in the wall face is strictly positioned according to the position of a reserved rib in a groove of the prefabricated bench, the hidden end of the straight thread sleeve is additionally welded with a cross steel bar welded or bound with a steel bar net of the shear wall, and meanwhile, a tool frame is additionally arranged to fix the position of the straight thread sleeve unchanged, so that the purpose of reliably connecting the sleeve with the steel bar of the shear wall is achieved;
step three, after the cast-in-place shear wall reaches the strength or the prefabricated shear wall is hoisted in place, hoisting the prefabricated bench section in place, screwing the threaded short rib into the embedded straight threaded sleeve, connecting and fixing the other end of the threaded short rib and the temporary exposed part of the embedded rib arranged in the groove of the bench section in a double-sided parallel welding 5d mode, and in actual operation, if a gap exists between the threaded short rib and the rib outlet position, ensuring that the two ribs are attached in parallel by finely adjusting the embedded rib;
and step four, finally, the groove reserved on the surface of the prefabricated bench is plugged by micro-expansion high-grade concrete, and concrete maintenance is enhanced.
Wherein, to the project that the bar planting condition satisfies and the bar planting quality is reliable, the scheme of pre-buried straight thread sleeve + back spin short muscle can adopt the back bar planting scheme to replace in the step two, because of groove operation space is less in the actual engineering, can bore on the front shear force wall of hoist and mount bench and get the bar planting hole to set up chemistry after accomplishing the clear hole and plant short muscle, the other end of chemistry plant short muscle is connected fixedly with pre-buried play muscle, connected mode is with step three.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) compared with the traditional method, the connecting structure of the prefabricated staircase and the shear wall has convenient construction, can effectively avoid the weakening of the strength and the rigidity of the wall body of the shear wall, and realizes the effective and reliable connection of the side edge of the prefabricated staircase surface and a cast-in-place or prefabricated shear wall;
(2) the utility model relates to a connection structure of prefabricated staircase and shear force wall, to prefabricated component and the error that the site operation produced, adjustable the remedy after the component hoists in place, if the short muscle of screw thread and play muscle position have the clearance, can guarantee two muscle parallel laminating through finely tuning pre-buried play muscle;
(3) the utility model relates to a connection structure of prefabricated staircase and shear force wall, if adopt prefabricated shear force wall, the effective control positioning accuracy of prefabricated component processing in-process;
(4) the utility model relates to a connecting structure of a prefabricated staircase and a shear wall, which can adopt a construction process without external scaffold and external mold, and has low cost, short construction period and high production efficiency;
(5) the utility model relates to a connecting structure of a prefabricated staircase and a shear wall, which has simple structure, ingenious design and obvious effect;
(6) the utility model relates to a connecting structure of a prefabricated staircase and a shear wall, the reserved groove is plugged by micro-expansion high-grade concrete, so that the prefabricated staircase is convenient to cast and tamp tightly;
(7) the utility model relates to a connection structure of prefabricated staircase and shear force wall can select to adopt the scheme of pre-buried straight thread sleeve + backspin short rib or the scheme of post-planting the rib according to actual conditions in the shear force wall matched with it, and is flexible and changeable, satisfies multiple use requirements, and the practicality is strong;
(8) the utility model relates to a connection structure of prefabricated staircase and shear force wall, firm reliable, the quality is guaranteed, easily engineering application;
(9) the utility model relates to a connection structure of prefabricated staircase and shear force wall, part easily processing and assembly, it is with low costs, be fit for promoting on a large scale.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic plan view of a groove in a prefabricated bench slab;
FIG. 2 is a detail view of the configuration of the pre-groove;
FIG. 3 is a schematic view of a three-dimensional structure of a groove in a prefabricated bench slab;
fig. 4 is a detailed view of the reinforcement of the groove and the prefabricated bench plate.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Examples
The embodiment provides a connection structure of a prefabricated staircase and a shear wall, the structure of which is shown in the attached drawings 1, 2, 3 and 4 in detail: a groove 1 is reserved on the side edge of one side, close to a shear wall, of a tread of a prefabricated stair section, a pre-buried rib 2 arranged in the horizontal direction is arranged in the groove 1, and the pre-buried rib 2 is divided into a temporary exposed part 21 and a hidden part 22; the hidden part 22 is embedded in the ladder section, the tail end of the hidden part is bound with the transverse distribution ribs 3 in the ladder plate nearby and bent to form ribs to enter the grooves, and the temporary exposed part 21 is arranged in the grooves 1 and is fixedly connected with one end of a threaded short rib or a chemically-planted short rib arranged in the shear wall; and the temporarily exposed parts 21 of the groove 1 are connected and fixed and then are blocked by micro-expansion high-grade concrete.
Furthermore, the bent ribs are bent according to the angle of 1: 6.
Further, the distance L between the end of the temporary exposed part 21 and the side edge of the prefabricated staircase is 20 mm.
Further, the temporary exposed part 21 and the threaded short rib or the chemical planting short rib are fixedly connected in a double-faced parallel welding 5d mode.
Furthermore, the total amount of the pre-buried ribs 2 and the total amount of all the transverse distribution ribs 3 of the ladder section are replaced with equal strength.
Furthermore, the groove 1 is arranged on the tread of the prefabricated stair tread for one tread and one groove.
Further, the groove 1 is a tapered groove.
Furthermore, the other end of the short thread rib is screwed into a straight thread sleeve which is pre-embedded in the near-bench surface of the prefabricated or cast-in-place shear wall, and the arrangement position of the straight thread sleeve in the wall surface is strictly positioned according to the position of a reserved rib in the prefabricated bench groove.
Furthermore, cross steel bars welded or bound with the shear wall steel bar mesh are additionally welded at the hidden end of the straight thread sleeve.
Furthermore, the other end of the chemical short-planting rib is screwed into a rib planting hole which is arranged on the near-ladder section surface of the prefabricated or cast-in-situ shear wall.
The construction process of the embodiment comprises the following steps:
step one, reserving grooves at one side of a tread side of a prefabricated stair section close to a shear wall, wherein one groove is arranged on one tread, a pre-buried rib in the horizontal direction is arranged in each groove, the tail end of a hidden part of the pre-buried rib in the stair section is bound with transverse distribution ribs in a stair slab nearby, and the rib is bent to enter the groove according to the angle 1: 6;
step two, pre-embedding a straight thread sleeve near the bench face of the prefabricated or cast-in-place shear wall, wherein the arrangement position of the straight thread sleeve in the wall face is strictly positioned according to the position of a reserved rib in a groove of the prefabricated bench, the hidden end of the straight thread sleeve is additionally welded with a cross steel bar welded or bound with a steel bar net of the shear wall, and meanwhile, a tool frame is additionally arranged to fix the position of the straight thread sleeve unchanged, so that the purpose of reliably connecting the sleeve with the steel bar of the shear wall is achieved;
step three, after the cast-in-place shear wall reaches the strength or the prefabricated shear wall is hoisted in place, hoisting the prefabricated bench section in place, screwing the threaded short rib into the embedded straight threaded sleeve, connecting and fixing the other end of the threaded short rib and the temporary exposed part of the embedded rib arranged in the groove of the bench section in a double-sided parallel welding 5d mode, and in actual operation, if a gap exists between the threaded short rib and the rib outlet position, ensuring that the two ribs are attached in parallel by finely adjusting the embedded rib;
and step four, finally, the groove reserved on the surface of the prefabricated bench is plugged by micro-expansion high-grade concrete, and concrete maintenance is enhanced.
Wherein, to the project that the bar planting condition satisfies and the bar planting quality is reliable, the scheme of pre-buried straight thread sleeve + back spin short muscle can adopt the back bar planting scheme to replace in the step two, because of groove operation space is less in the actual engineering, can bore on the front shear force wall of hoist and mount bench and get the bar planting hole to set up chemistry after accomplishing the clear hole and plant short muscle, the other end of chemistry plant short muscle is connected fixedly with pre-buried play muscle, connected mode is with step three.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. A connection structure of a prefabricated staircase and a shear wall is characterized in that a groove (1) is reserved on the side edge of a tread of a prefabricated staircase section close to one side of the shear wall, a pre-buried rib (2) arranged in the horizontal direction is arranged in the groove (1), and the pre-buried rib (2) is divided into a temporary exposed part (21) and a hidden part (22); the hidden part (22) is embedded in the ladder section, the tail end of the hidden part is bound with the transversely distributed ribs (3) in the ladder plate nearby and bent to form ribs to enter the grooves, the temporary exposed part (21) is arranged in the grooves (1) and is fixedly connected with one end of a threaded short rib or a chemically-planted short rib arranged in the shear wall; the temporarily exposed parts (21) of the groove (1) are connected and fixed and then are blocked by micro-expansion high-grade concrete.
2. The precast stair and shear wall connection structure according to claim 1, wherein the bent ribs are bent at an angle of 1: 6.
3. The connecting structure of the prefabricated staircase and the shear wall as claimed in claim 1, wherein the distance L between the end of the temporary exposed part (21) and the side of the prefabricated staircase is 20 mm.
4. The connecting structure of the prefabricated staircase and the shear wall as claimed in claim 1, wherein the temporary exposed part (21) and the short screw thread rib or the short chemical plant rib are fixedly connected in a double-faced parallel welding 5d mode.
5. The connecting structure of the prefabricated staircase and the shear wall as claimed in claim 1, wherein the total amount of the pre-embedded ribs (2) and the total amount of the transverse distribution ribs (3) of the staircase sections are replaced by equal strength.
6. The connecting structure of the prefabricated staircase and the shear wall as claimed in claim 1, wherein the groove (1) is arranged on the tread of the prefabricated staircase section for one tread and one groove.
7. The connecting structure of the prefabricated staircase and the shear wall as claimed in claim 1, wherein the groove (1) is a tapered groove.
8. The connection structure of the prefabricated staircase and the shear wall as claimed in claim 1, wherein the other end of the short screw thread rib is screwed into a straight screw thread sleeve embedded in the near-stair section surface of the prefabricated or cast-in-situ shear wall.
9. The precast stair and shear wall connection structure of claim 8, wherein the hidden end of the straight threaded sleeve is welded with a cross reinforcement welded or bound with a shear wall reinforcement mesh.
10. The connection structure of the prefabricated staircase and the shear wall as claimed in claim 1, wherein the other ends of the chemical short-planting ribs are screwed into the rib-planting holes near the staircase surface of the prefabricated or cast-in-situ shear wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920356115.2U CN209891422U (en) | 2019-03-20 | 2019-03-20 | Connecting structure of prefabricated staircase and shear wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920356115.2U CN209891422U (en) | 2019-03-20 | 2019-03-20 | Connecting structure of prefabricated staircase and shear wall |
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| CN209891422U true CN209891422U (en) | 2020-01-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324066A (en) * | 2020-11-21 | 2021-02-05 | 西安交通大学城市学院 | Novel beamless and columnless stair and construction method |
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- 2019-03-20 CN CN201920356115.2U patent/CN209891422U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324066A (en) * | 2020-11-21 | 2021-02-05 | 西安交通大学城市学院 | Novel beamless and columnless stair and construction method |
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