CN212376268U - Three-step bottom die reinforcing device and reinforcing and supporting system on stairs - Google Patents
Three-step bottom die reinforcing device and reinforcing and supporting system on stairs Download PDFInfo
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- CN212376268U CN212376268U CN202020228538.9U CN202020228538U CN212376268U CN 212376268 U CN212376268 U CN 212376268U CN 202020228538 U CN202020228538 U CN 202020228538U CN 212376268 U CN212376268 U CN 212376268U
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Abstract
The utility model relates to a three-step bottom die reinforcing device and a reinforcing and supporting system on stairs, wherein the three-step bottom die reinforcing device on stairs comprises a steel plate, a bolt and a nut; the steel plate is provided with more than two through holes, the centers of all the through holes are positioned on the same straight line L1, the distances h1 from the centers of the through holes at two ends of the straight line L1 to the edge of the steel plate along the direction of the straight line L1 are equal, h1 is more than or equal to 80mm and less than or equal to 150mm, d1 from the center of the through hole to the edge of the steel plate at one side along the direction vertical to the straight line L1 is less than the distance d2 from the edge of the steel plate at the other side, d1 is more than or equal to 150mm and less than or equal to 200mm, d2= d1+ c is the distance from the center of the through hole to the boundary line of the three-step concrete; the steel plate is located below the bottom die and clings to the bottom die, the bolt penetrates through the through hole in the steel plate and the bottom die to extend to the upper portion of the bottom die to be in threaded connection with the nut, and the nut wraps the portion, extending to the upper portion of the bottom die, of the bolt. The three-step bottom die reinforcing device on the stairs enhances the supporting rigidity of the template, improves the three-step concrete forming quality on the stairs and prolongs the service cycle of the template.
Description
Technical Field
The utility model relates to a stair construction joint template technical field of building engineering construction especially relates to a three steps of die block reinforcing apparatus on stair and reinforcement support system.
Background
The stair is of an integral cast-in-place structure, and when one-time pouring cannot be completed, a construction joint is formed on a joint surface of the first-poured concrete and the later-poured concrete. The construction joints should be left at locations where the structure is less subject to shear and convenient to construct. Because the middle story height of the multi-story residence is 2.9 meters, most of the stairs run for two times, the stair for one time runs for 1.45 meters, the step height of the step is 0.15 meters, the step height is 0.45 meters, and the step height is about 1/3 of the stair for one time, wherein the total height of the stair for one time runs for 1.45 meters. For the plate type stairway manufactured by the stairway and the platform beam, the midspan shearing force is small, and the stair construction joints left at the three steps fall into a midspan 1/3 section, so that the principle of small shearing force can be met.
The existing residential construction is to pour one layer of concrete at a time, and stair construction joints are basically left at three step positions of a stair root. This is commonly called "three steps on stairs". Of course, the floor heights are not the same, but are left at the last three steps.
The utility model discloses a utility model patent application that publication number is CN106088588A, the name is "cast-in-place stair seals formwork structure and construction method of pouring concrete" can be referred to current stair template bearing structure, and this application discloses stair template bearing structure constitutes the bottom sprag by pole setting, horizontal pole and down tube, and the top at pole setting top holds in the palm supports horizontal main stupefied, and a plurality of main stupefied support a plurality of slopes and perpendicular main stupefied inferior stupefied, inferior stupefied support stair die block.
In the template supporting device for three steps on the stairs, when a layer is constructed, personnel walk greatly, the requirement on a stair supporting system is high, the rigidity of the template cannot meet the construction requirement, a bottom die and the surface of concrete are separated to form a gap, construction waste is easily plugged into the gap, the clearance difficulty is increased, and the platform dislocation phenomenon is easily caused during pouring.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, an object of the utility model is to provide a three steps of die block reinforcing apparatus and reinforcement support system on stair, this three steps of die block reinforcing apparatus on stair have strengthened template support rigidity, have improved three steps of concrete shaping quality on stair and have prolonged the life cycle of template.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a three-step bottom die reinforcing device for stairs comprises a steel plate, bolts and nuts; the steel plate is provided with more than two through holes, the centers of all the through holes are positioned on the same straight line L1, the distances h1 from the centers of the through holes at two ends of the straight line L1 to the edge of the steel plate along the direction of the straight line L1 are equal, h1 is more than or equal to 80mm and less than or equal to 150mm, d1 from the center of the through hole to the edge of the steel plate at one side along the direction vertical to the straight line L1 is less than the distance d2 from the edge of the steel plate at the other side, d1 is more than or equal to 150mm and less than or equal to 200mm, d2= d1+ c is the distance from the center of the through hole to the boundary line of the three-step concrete; the steel plate is located below the bottom die and clings to the bottom die, the bolt penetrates through the through hole in the steel plate and the bottom die to extend to the upper portion of the bottom die to be in threaded connection with the nut, and the nut wraps the portion, extending to the upper portion of the bottom die, of the bolt.
Further, the distance h2=2h1 between the centers of two adjacent through holes.
Furthermore, one section of the bolt close to the bolt head is a polished rod section without threads, the length a1 of the polished rod section is more than or equal to the sum of the thickness of the steel plate and the thickness of the bottom mold of the stair, and the rest section of the bolt is an external thread section with external threads.
Furthermore, the nut comprises an internal thread section with internal threads and a circular connecting section fixedly connected to the end part of the internal thread end, and the diameter of the connecting section is larger than that of the internal thread section.
Further, the length b1 of the internal thread section is greater than or equal to the length a2 of the external thread section.
A stair three-step reinforcing and supporting system comprises a bottom support, a main ridge and a secondary ridge, the stair three-step bottom die reinforcing device and a stair template; the main edge is parallel to the length direction of the stair step and horizontally arranged at the top end of the vertical rod of the bottom support, the secondary edge is parallel to the bottom surface of the stair step and is obliquely supported on the main edge along the direction vertical to the main edge, a groove for accommodating the bottom die reinforcing device is formed in the secondary edge, and a steel plate of the bottom die reinforcing device is accommodated in the groove; the stair template is supported on the secondary ridge and the steel plate, the bottom die of the stair template is tightly attached to the steel plate, a hole is formed in the position, corresponding to the through hole of the steel plate, of the bottom die, and the bolt penetrates through the through hole of the steel plate and the hole of the bottom die to extend to the position above the bottom die and is in threaded connection with the nut.
Furthermore, the size of the hole of the bottom die is the same as that of the through hole of the steel plate.
The utility model discloses following beneficial effect has:
the utility model discloses a three steps of die block reinforcing apparatus and support system simple structure on stair, easily assembly and disassembly, three steps of position template support rigidity on the reinforcing stair can guarantee not separating template and concrete surface when the people walks three steps of positions on stair, improves three steps of concrete shaping quality improvement template life cycle on stair. No harmful substances and garbage are generated in the mounting and dismounting processes.
The utility model discloses a construction process has increased the reinforced (rfd) device of three steps of template on reinforcing stair on the basis of former technology, its simple structure, and easy assembly and disassembly, the three steps of reinforcement systems on the stair of the adoption template mounting of suitable various widths. The reliability of the three-step reinforcing system on the stairs is improved, the percent of pass of the three-step concrete forming quality on the stairs is ensured, the repairing cost of the part after the form removal is reduced, and the service cycle of the template is prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the three-step stair reinforcement support system of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic top view of the steel plate of the present invention;
FIG. 4 is a schematic side view of the steel plate of the present invention;
fig. 5 is a schematic structural view of the bolt of the present invention;
fig. 6 is a schematic structural view of the nut of the present invention.
Description of reference numerals:
10-bottom die reinforcing device, 1-bottom support, 11-vertical rod, 2-main edge, 3-secondary edge, 31-groove, 4-stair template, 41-bottom die, 51-steel plate, 511-through hole, 52-bolt, 521-bolt head, 522-polished rod section, 523-external thread section, 53-nut, 531-internal thread section and 532-connecting section.
Detailed Description
The invention will be described in further detail with reference to the following drawings and specific embodiments:
the first embodiment,
Referring to fig. 1 to 6, a three-step bottom die reinforcement device 10 for stairs comprises a steel plate 51, a bolt 52 and a nut 53.
The steel plate 51 is provided with more than two through holes 511, the centers of all the through holes 511 are positioned on the same straight line L1, the straight line L1 is positioned on one side of a midline L0 of the steel plate 51, and L1 and L0 are shown by dotted lines in the figure. The distance h1 from the centers of the through holes 511 at the two ends of the straight line L1 to the edge of the steel plate 51 along the direction of the straight line L1 is equal to or greater than 80mm and less than or equal to 150 mm. The distance h2 between the centers of two adjacent through holes 511 is greater than or equal to 2h1, preferably equal to 2h 1. The distance d1 from the center of the through hole 511 to the edge of the one side steel plate 51 in the direction perpendicular to the line L1 is smaller than the distance d2 to the edge of the other side steel plate 51. The distance d1 from the center of the through hole 511 to the short side of the edge of the steel plate 51 in the direction perpendicular to the straight line L1 is 150mm or more and 200mm or less. The distance c from the through hole 511 to the boundary line of the three-step pouring concrete on the stair is more than or equal to 80mm and less than or equal to 120 mm. The distance d2= c + d1 from the through hole 511 to the long side of the edge of the steel plate 51 in the direction perpendicular to the straight line L1 at the center.
In the present embodiment, the length × width × height of the steel plate 51 is 400mm × 400mm × 8mm, wherein the number of the through holes 511 is two, the distance h1 from the center of the through hole 511 at both ends of the straight line L1 to the edge of the steel plate 51 in the direction of the straight line L1 is 100mm, and the distance d1 from the center of the through hole 511 to the short side of the edge of the steel plate 51 perpendicular to the direction of the straight line L1 is 150 mm. The diameter of the through hole 511 is 10 mm.
One section of the bolt 52 close to the bolt head 521 is a polished rod section 522 without threads, the length a1 of the polished rod section 522 is greater than or equal to the sum of the thickness of the steel plate 51 and the thickness of the stair bottom die 41, the remaining section of the bolt 52 is an external thread section 523 with external threads, and the length a2 of the external thread section 523 is greater than or equal to 2.5a 1. In this embodiment, the length a1 of the light bar segment 522 is 200mm, and the length a2 of the thread segment is 500 mm.
The nut 53 comprises an internal thread section 531 provided with internal threads and an annular connecting section 532 fixedly connected to the end part of the internal thread end, and the diameter of the connecting section 532 is larger than that of the internal thread section 531. The length b1 of the internal thread section 531 is equal to or greater than the length a2 of the external thread section 523.
In this embodiment, the nut 53 has an overall length of 60mm, wherein the length b1 of the internal thread section 531 is 55mm, the thickness of the connecting section 532 is 5mm, and the distance from the edge of the connecting section 532 to the outer peripheral edge of the internal thread section 531 is 10 mm.
The steel plate 51 is located below the stair bottom die 41 and clings to the bottom die 41, and the bolt 52 penetrates through a through hole 511 in the steel plate 51 and the bottom die 41 to extend to the position above the bottom die 41 to be in threaded connection with the nut 53.
Example II,
Referring to fig. 1, a stair three-step reinforcing and supporting system comprises a bottom support 1, a main ridge 2, a secondary ridge 3, a bottom die reinforcing device 10 and a stair template 4.
Stupefied 2 is on a parallel with stair length direction of marking time and the level sets up on the 11 tops of pole setting of bottom sprag 1, stupefied 3 is on stupefied 2 in parallel with the bottom surface of the stair and along the main stupefied 2 of perpendicular to direction slope support, it has the recess 31 that holds die block reinforcing apparatus 10 to open on stupefied 3 time.
The structure of the bottom die reinforcing device 10 is the same as that of the three-step bottom die reinforcing device 10 on the stairs in the first embodiment. The steel plate 51 of the bottom die reinforcing device 10 is received in the recess 31.
A construction process of a three-step reinforcing and supporting system on a stair comprises the following steps:
installing a bottom support 1, installing a main edge 2 at the top end of a vertical rod 11 of the bottom support 1, and installing a back edge on the main edge 2, wherein the surface with a groove 31 faces upwards;
the steel plate 51 is placed in the groove 31 of the back edge, the direction of a straight line L1 formed by connecting lines of the through holes 511 of the steel plate 51 is placed in parallel with the main edge 2, the short side from the through hole 511 of the steel plate 51 to the edge is placed below, namely the short side from the through hole 511 to the edge of the steel plate 51 vertical to the direction of the straight line L1 is positioned at the inner side of the three steps on the stair, the long side is positioned at the outer side of the three steps on the stair, and the through hole 511 is positioned at the inner side of the three steps on. The distance c from the boundary line of the three-step pouring concrete on the stair to the through hole 511 of the steel plate 51 is more than or equal to 80mm and less than or equal to 120 mm. The steel plate 51 is tightly spliced with the steel plate 51;
installing a bottom die 41 on the secondary ridge 3 and the steel plate 51, tightly splicing the templates of the bottom die 41, fixing the templates on the secondary ridge 3 by using fixing pieces such as iron nails and the like, drilling holes on the templates by aligning an electric drill tool with the through holes 511 of the steel plate 51 below the stair, wherein the holes of the bottom die 41 are the same as the through holes 511 of the steel plate 51 in size;
the bolt 52 upwards penetrates through the through hole 511 of the steel plate 51 and the hole of the bottom die 41 and extends to the upper part of the bottom die 41, and the nut 53 downwards is in threaded connection with the bolt 52 and is screwed tightly;
after the step plates on the stairs are installed and the elevation is adjusted, concrete can be poured;
when the three-step formwork on the stair is removed, the steel plate 51 and the bottom formwork 41 can be removed after the bolts 52 are unscrewed below the stair to separate the bolts 52 from the nuts 53 buried in the concrete, so that the bottom formwork reinforcing device 10, the formwork and the like except the nuts 53 can be reused.
The above only is the detailed implementation manner of the present invention, not limiting the patent scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. The utility model provides a three steps of die block reinforcing apparatus on stair which characterized in that: comprises a steel plate (51), a bolt (52) and a nut (53); the steel plate (51) is provided with more than two through holes (511), the centers of all the through holes (511) are positioned on the same straight line L1, the distances h1 from the centers of the through holes (511) at two ends of the straight line L1 to the edge of the steel plate (51) along the direction of the straight line L1 are equal, and 80mm is more than or equal to h1 and is less than or equal to 150mm, the distance d1 from the center of the through hole (511) to the edge of the steel plate (51) at one side along the direction vertical to the straight line L1 is smaller than the distance d2 from the center of the through hole (511) to the edge of the steel plate (51) at the other side and 150mm is more than or equal to d1 and is less than or equal to 200mm, d2 is d1+ c, c is the distance from the center; the steel plate (51) is positioned below the bottom die (41) and is tightly attached to the bottom die (41), the bolt (52) penetrates through the through hole (511) in the steel plate (51) and the bottom die (41) to extend to the upper side of the bottom die (41) and is in threaded connection with the nut (53), and the nut wraps the part of the bolt (52) extending to the upper side of the bottom die (41).
2. The stair climbing three-step bottom die reinforcing device according to claim 1, characterized in that: the distance h2 between the centers of two adjacent through holes (511) is 2h 1.
3. The stair climbing three-step bottom die reinforcing device according to claim 1, characterized in that: one section of the bolt (52) close to the bolt head (521) is a polished rod section (522) without threads, the length a1 of the polished rod section (522) is more than or equal to the sum of the thickness of the steel plate (51) and the thickness of the stair bottom die (41), and the rest section of the bolt (52) is an external thread section (523) with external threads.
4. The stair climbing three-step bottom die reinforcing device according to claim 3, characterized in that: the nut (53) comprises an internal thread section (531) with internal threads and an annular connecting section (532) fixedly connected to the end part of the internal thread end, and the diameter of the connecting section (532) is larger than that of the internal thread section (531).
5. The stair climbing three-step bottom die reinforcing device according to claim 4, characterized in that: the length b1 of the internal thread section (531) is more than or equal to the length a2 of the external thread section (523).
6. A three-step reinforcing and supporting system on stairs is characterized in that: comprising a bottom support (1), a main edge (2) and a secondary edge (3), a stair three-step bottom die reinforcement device (10) and a stair template (4) according to any one of claims 1 to 5; the main edge (2) is parallel to the length direction of the stair step and horizontally arranged at the top end of the vertical rod (11) of the bottom support (1), the secondary edge (3) is parallel to the bottom surface of the stair and is obliquely supported on the main edge (2) along the direction vertical to the main edge (2), a groove (31) for accommodating the bottom die reinforcing device (10) is formed in the secondary edge (3), and a steel plate (51) of the bottom die reinforcing device (10) is accommodated in the groove (31); the stair template (4) is supported on the secondary ridges (3) and the steel plate (51), the bottom die (41) of the stair template (4) is tightly attached to the steel plate (51), a hole is formed in the position, corresponding to the through hole (511) of the steel plate (51), of the bottom die (41), and the bolt (52) penetrates through the through hole (511) of the steel plate (51) and the hole of the bottom die (41) to extend to the position above the bottom die (41) to be in threaded connection with the nut (53).
7. The stair-climbing three-step reinforcement support system according to claim 6, characterized in that: the size of the hole of the bottom die (41) is the same as that of the through hole (511) of the steel plate (51).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020228538.9U CN212376268U (en) | 2020-02-28 | 2020-02-28 | Three-step bottom die reinforcing device and reinforcing and supporting system on stairs |
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| CN202020228538.9U CN212376268U (en) | 2020-02-28 | 2020-02-28 | Three-step bottom die reinforcing device and reinforcing and supporting system on stairs |
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| CN212376268U true CN212376268U (en) | 2021-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700339A (en) * | 2021-08-12 | 2021-11-26 | 福建省城投科技有限公司 | Cast-in-place supporting system for rigid connection prefabricated stairway on same layer and installation method thereof |
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2020
- 2020-02-28 CN CN202020228538.9U patent/CN212376268U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700339A (en) * | 2021-08-12 | 2021-11-26 | 福建省城投科技有限公司 | Cast-in-place supporting system for rigid connection prefabricated stairway on same layer and installation method thereof |
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