CN113565276A - Weight-reducing prefabricated scissor ladder - Google Patents
Weight-reducing prefabricated scissor ladder Download PDFInfo
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- CN113565276A CN113565276A CN202110686169.7A CN202110686169A CN113565276A CN 113565276 A CN113565276 A CN 113565276A CN 202110686169 A CN202110686169 A CN 202110686169A CN 113565276 A CN113565276 A CN 113565276A
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- key hole
- pin key
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- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000011083 cement mortar Substances 0.000 claims description 35
- 238000010276 construction Methods 0.000 claims description 27
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 5
- 239000000945 filler Substances 0.000 description 11
- 239000004698 Polyethylene Substances 0.000 description 7
- 238000003032 molecular docking Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Ladders (AREA)
Abstract
The invention belongs to the technical field of building prefabricated parts, and particularly relates to a weight-reducing prefabricated scissor ladder which comprises a prefabricated ladder section and an L-shaped ladder beam, wherein the prefabricated ladder section comprises an upper ladder section and a lower ladder section, the upper ladder section is provided with an upper connection step, the upper connection step is provided with a T-shaped pin key hole, the lower ladder section is provided with a lower connection step, and the lower connection step is provided with a straight pin key hole; the L-shaped ladder beam comprises a vertical section and a transverse section, wherein the vertical section is provided with an upper anchor bolt, and the transverse section is provided with a lower anchor bolt; the upper anchor bolt is inserted into the T-shaped pin keyhole, a gasket which is sleeved outside the upper anchor bolt and is abutted against the step of the T-shaped pin keyhole is arranged in the T-shaped pin keyhole, the upper end of the upper anchor bolt is in threaded connection with a nut which is abutted against the gasket, and the position in the T-shaped pin keyhole above the gasket is blocked by mortar; the lower anchor bolt is inserted into the straight pin key hole, a gap between the lower anchor bolt and the straight pin key hole is filled with grouting material, and the space at the upper end of the straight pin key hole is blocked by mortar. The invention can solve the problem of hoisting weight without worrying about the cracking risk caused by the slender ladder plate.
Description
Technical Field
The invention belongs to the technical field of building prefabricated parts, and particularly relates to a weight-reducing prefabricated scissor ladder.
Background
The assembly type building is an important measure for promoting structural reform of a supply side of the building industry and novel urbanization development, and in related guidance opinions and implementation opinions of Hubei province, optimization of part production, improvement of assembly type construction level, guidance of core technologies of component installation, node connection, water prevention and the like of enterprise system research, improvement of assembly construction connection quality, building safety performance and overall construction efficiency are all mentioned in main tasks.
In view of the fact that the tonnage of the assembled component is larger than that of the traditional cast-in-place component, the requirement on hoisting load is higher, the cost of the corresponding tower crane is greatly increased, particularly the tonnage of a high-rise fully-prefabricated scissor ladder is about 6.0 tons or more, the common tower crane cannot meet the hoisting requirement, the ladder can only be longitudinally cut into two prefabricated parts, and then the prefabricated parts are assembled on site. But the scissors ladder becomes more slender due to the longitudinal cutting, reinforcing bars need to be added to avoid the cracking risk, and meanwhile, a longitudinal through seam is formed at the splicing part to increase the difficulty of on-site splicing seam treatment.
Disclosure of Invention
The invention aims to provide a weight-reducing prefabricated scissor ladder, and aims to solve the technical problems that in the prior art, in order to meet the hoisting requirement of the scissor ladder, the scissor ladder is longitudinally cut into two prefabricated parts, so that the scissor ladder has a cracking risk, and meanwhile, a longitudinal through seam is formed at the splicing part, so that the field splicing seam processing difficulty is increased.
In order to achieve the above object, an embodiment of the present invention provides a weight-reducing prefabricated scissor ladder, including:
the prefabricated ladder section comprises an upper ladder section and a lower ladder section which are formed by a central cross section, wherein an upper connection step is formed at the lower end of the upper ladder section, a T-shaped pin key hole is formed in the upper connection step, a lower connection step is formed at the upper end of the lower ladder section, and a straight pin key hole is formed in the lower connection step;
the L-shaped ladder beam comprises a vertical section and a transverse section connected with the vertical section, wherein an upper anchor bolt extends out of the vertical section, and a lower anchor bolt extends out of the transverse section;
the vertical section is arranged below the upper connection step, the upper anchor bolt is inserted into the T-shaped pin key hole, a gasket which is sleeved outside the upper anchor bolt and abuts against the step in the T-shaped pin key hole is arranged in the T-shaped pin key hole, the upper end of the upper anchor bolt is in threaded connection with a nut which abuts against the gasket, and the space in the T-shaped pin key hole, which is positioned above the gasket, is sealed by mortar;
the transverse section is arranged below the lower connection step, the lower anchor bolt is inserted into the straight pin key hole, a gap between the lower anchor bolt and the straight pin key hole is filled with grouting material, and the space, close to the upper end of the straight pin key hole, of the straight pin key hole is plugged with the grouting material through mortar.
Optionally, a mounting seam is formed between the side face of the vertical section and the side face of the lower connection step, and a middle polyphenyl filling body, a PE rod and an adhesive injection layer are filled in the mounting seam in sequence.
Optionally, the mounting slots are spaced 30mm apart.
Optionally, an upper construction joint is formed between the top of the vertical section and the bottom of the upper connection step, an upper cement mortar leveling layer is arranged in the upper construction joint, a lower construction joint is formed between the top of the transverse section and the bottom of the lower connection step, and a lower cement mortar leveling layer is arranged in the lower construction joint.
Optionally, an oil felt layer is further arranged between the upper cement mortar leveling layer and the bottom of the upper connection step.
Optionally, an upper polyphenyl filler for preventing cement mortar of the upper cement mortar leveling layer from overflowing is arranged at a position, close to the outer end portion, of the top of the vertical section, and a lower polyphenyl filler for preventing cement mortar of the lower cement mortar leveling layer from overflowing is arranged at a position, close to the outer end portion, of the top of the horizontal section.
Optionally, the upper construction joint and the lower construction joint are both 20mm apart.
Optionally, the strength grades of the upper cement mortar leveling layer and the lower cement mortar leveling layer are both greater than or equal to M15.
Optionally, the upper anchor bolt and the lower anchor bolt are both L-shaped anchor bolts;
the bottom end of the upper anchor bolt extends to the transverse section, and/or the bottom end of the lower anchor bolt extends to the vertical section.
One or more technical schemes of the weight-reducing prefabricated scissor ladder provided by the embodiment of the invention at least have one of the following technical effects: in the weight-reducing prefabricated scissor ladder provided by the embodiment of the invention, an upper ladder section and a lower ladder section are formed by connecting an L-shaped ladder beam and a middle cross section, an upper anchor bolt arranged on a vertical section of the L-shaped ladder beam is inserted into a T-shaped pin key hole arranged on an upper connecting step of the upper ladder section, a gasket sleeved outside the upper anchor bolt and abutted against the step in the T-shaped pin key hole is arranged in the T-shaped pin key hole, so that a space is formed between the gaskets, then a nut abutting against the gasket is connected with the upper end of the upper anchor bolt in a threaded manner, and finally the space in the T-shaped pin key hole and positioned above the gasket is sealed by mortar, so that the connection between the L-shaped ladder beam and the upper ladder section is completed; the lower anchor bolt that sets up on the horizontal section through L type terraced roof beam inserts the straight type round pin keyhole that sets up on the lower step of plugging into of lower bench, at the gap grout packing between crab-bolt and the straight type round pin keyhole down again, pass through mortar shutoff thick liquids at the space that straight type round pin keyhole is close to its upper end at last, accomplish being connected of L type terraced roof beam and lower bench, prefabricated bench can form the mode production of bench and bench down through positive horizontal section like this, so, both can solve the hoist and heavy difficult problem, need not worry again and cause the fracture risk because of the bench is long and thin, and be difficult to handle the series of problems of leading to the seam.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a weight-reducing prefabricated scissor ladder according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of an L-shaped ladder beam of the weight-reducing prefabricated scissor ladder provided by the embodiment of the invention.
Fig. 3 is a schematic structural diagram of an upper ladder section of a weight-reducing prefabricated scissor ladder according to an embodiment of the invention.
Fig. 4 is a schematic structural diagram of a lower ladder section of the weight-reducing prefabricated scissor ladder provided by the embodiment of the invention.
Fig. 5 is a schematic structural diagram of a weight-reducing prefabricated scissor ladder applied to a building according to an embodiment of the invention.
Wherein, in the figures, the respective reference numerals:
10-upper connection step 11-T-shaped pin key hole 20-lower connection step
21-straight pin key hole 30-upper anchor bolt 40-lower anchor bolt
50-cement mortar leveling layer 60-cement mortar leveling layer 70-asphalt felt layer
80-upper side polyphenyl filler 90-lower side polyphenyl filler 100-prefabricated bench
101-mortar 102-slurry 110-upper bench
111-gasket 112-nut 120-lower ladder section
121-middle polyphenyl filler 122-PE rod 123-glue injection layer
200-L-shaped ladder beam 210-vertical section 220-horizontal section.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-5 are exemplary and intended to be used to illustrate embodiments of the invention, and should not be construed as limiting the invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In one embodiment of the invention, as shown in fig. 1-5, a weight-reducing prefabricated scissor ladder is provided, which comprises prefabricated ladder sections 100 and L-shaped ladder beams 200.
As shown in fig. 1 and 5, the prefabricated bench 100 includes an upper bench 110 and a lower bench 120 formed by a central cross section, i.e. the upper bench 110 and the lower bench 120 are connected together to form the prefabricated bench 100, the prefabricated bench 100 is divided into the upper bench 110 and the lower bench 120 by the central cross section, which is different from the design of longitudinal cutting, so that the lengths of the two upper benches 110 and the lower bench 120 are shorter, which is beneficial to transportation and hoisting, and the connection between the upper bench 110 and the lower bench 120 is mainly realized by an L-shaped ladder beam 200.
Further, as shown in fig. 3 to 4, an upper connection step 10 is formed at the lower end of the upper stair section 110, the upper connection step 10 is a step of the upper stair section 110, a T-shaped pin key hole 11 is formed in the upper connection step 10, and the diameter of the hole of the T-shaped pin key hole 11 located at the upper section is larger than that of the hole located at the lower section, so that a step is formed in the T-shaped pin key hole 11. The upper end of the lower bench 120 forms a lower connection step 20, the lower connection step 20 is a step of the lower bench 120, the lower connection step 20 is provided with a straight pin key hole 21, and the straight pin key hole 21 is of a hole structure with a uniform hole diameter and is different from the T-shaped pin key hole 11.
Further, as shown in fig. 2, the L-shaped ladder beam 200 includes a vertical section 210 and a transverse section 220 connected to the vertical section 210, wherein the transverse section 220 is connected to the vertical section 210 near the side of the bottom thereof and is an integrated structure, and is cast and formed in a prefabricated manner. An upper anchor bolt 30 extends from the vertical section 210, the upper anchor bolt 30 is formed in the vertical section 210 in a prefabricated manner, a lower anchor bolt 40 extends from the transverse section 220, and the lower anchor bolt 40 is formed in the transverse section 220 in a prefabricated manner.
As shown in fig. 1, the vertical section 210 is disposed below the upper connection step 10, the upper anchor bolt 30 is inserted into the T-shaped pin key hole 11, a gasket 111 that is disposed outside the upper anchor bolt 30 and abuts against the step inside the T-shaped pin key hole 11 is disposed inside the T-shaped pin key hole 11, the upper end of the upper anchor bolt 30 is connected with a nut 112 that abuts against the gasket 111 through a thread, so that the gasket 111 is locked, a space is formed below the gasket 111, and the space above the gasket 111 inside the T-shaped pin key hole 11 is sealed by mortar 101, so that the upper ladder section 110 can realize certain sliding deformation relative to the L-shaped ladder beam 200.
Further, as shown in fig. 1, the transverse section 220 is disposed below the lower connection step 20, the lower anchor bolt 40 is inserted into the straight pin key hole 21, a gap between the lower anchor bolt 40 and the straight pin key hole 21 is filled with grouting material 102, and a space of the straight pin key hole 21 near an upper end thereof is plugged with the grouting material 102 by mortar 101. In this manner, the transverse section 220 achieves a connection with the lower docking step 20, such that the docking connection of the upper and lower ladder sections 110 and 120 through the L-shaped ladder beam 200 forms the prefabricated ladder section 100.
In the weight-reducing prefabricated scissor ladder provided by the embodiment of the invention, an upper ladder section 110 and a lower ladder section 120 which are formed by connecting an L-shaped ladder beam 200 and a middle cross section are connected, an upper anchor bolt 30 arranged on a vertical section 210 of the L-shaped ladder beam 200 is inserted into a T-shaped pin keyhole 11 arranged on an upper connecting step 10 of the upper ladder section 110, a gasket 111 which is arranged outside the upper anchor bolt 30 and abuts against the step in the T-shaped pin keyhole 11 is arranged in the T-shaped pin keyhole 11, so that a space is formed between the gaskets 111, a nut 112 which abuts against the gasket 111 is connected at the upper end of the upper anchor bolt 30 in a threaded manner, and finally the space which is positioned above the gasket 111 in the T-shaped pin keyhole 11 is blocked by mortar 101, so that the L-shaped ladder beam 200 is connected with the upper ladder section 110; the lower anchor bolts 40 arranged on the transverse section 220 of the L-shaped ladder beam 200 are inserted into the straight pin key holes 21 arranged on the lower connection steps 20 of the lower ladder section 120, then the gaps between the lower anchor bolts 40 and the straight pin key holes 21 are filled with grouting material 102, and finally the grouting material 102 is blocked by mortar 101 in the spaces, close to the upper ends of the straight pin key holes 21, so that the connection between the L-shaped ladder beam 200 and the lower ladder section 120 is completed, and the prefabricated ladder section 100 can be produced in a mode that the upper ladder section 110 and the lower ladder section 120 are formed by a central transverse section, so that the problem of hoisting is solved, the cracking risk caused by the slender ladder plates is avoided, and the series problems of through seams are difficult to process.
The grouting material 102 adopted in the embodiment of the present invention is preferably filled with CGM grouting material 102 of C40 level.
In another embodiment of the present invention, as shown in fig. 1, a mounting gap (not shown) is formed between a side surface of the vertical section 210 and a side surface of the lower docking step 20, and the mounting gap is sequentially filled with a middle polyphenyl filler 121, a PE rod 122 and a glue injection layer 123. Specifically, the middle polyphenyl filler 121, the PE rod 122 and the glue injection layer 123 are filled in the mounting gap, so that the good sealing performance of the mounting gap and the good gap treatment effect can be ensured. Wherein, PE is polyethylene (PE for short).
Preferably, the mounting slots are spaced 30mm apart.
In another embodiment of the present invention, as shown in fig. 1, an upper construction joint (not shown) is formed between the top of the vertical section 210 and the bottom of the upper connection step 10, an upper cement mortar leveling layer 50 is disposed inside the upper construction joint, the upper cement mortar leveling layer 50 is disposed to fill the upper construction joint, and may also assist in connecting the vertical section 210 and the upper connection step 10; a lower construction joint (not shown) is formed between the top of the transverse section 220 and the bottom of the lower docking step 20, and a lower cement mortar leveling layer 60 is arranged in the lower construction joint. Likewise, the provision of lower cement mortar leveling is used to fill the lower construction joints and may also assist in connecting the transverse section 220 and the lower docking step 20. Therefore, the gap treatment difficulty of the connected upper ladder section 110 and the lower ladder section 120 is small, the effect is good, the connection is tight, and the cracking is not easy to occur.
In another embodiment of the present invention, as shown in fig. 1, an oil felt layer 70 is further disposed between the upper cement mortar leveling layer 50 and the bottom of the upper docking step 10. Specifically, since the upper ladder section 110 can slide relative to the L-shaped ladder beam 200, the linoleum layer 70 is disposed to contact the bottom of the upper connection step 10 of the upper ladder section 110, so as to facilitate the upper connection step to generate a certain sliding deformation, and release the internal force.
In another embodiment of the present invention, as shown in fig. 1, the top of the vertical section 210 near the outer end thereof is provided with an upper polyphenyl filler 80 for preventing cement mortar of the upper cement mortar leveling layer 50 from overflowing, and the top of the horizontal section 220 near the outer end thereof is provided with a lower polyphenyl filler 90 for preventing cement mortar of the lower cement mortar leveling layer 60 from overflowing. Specifically, the arrangement of the upper polyphenyl filler 80 can avoid the overflow of cement mortar during the construction of the cement mortar leveling layer 50, and the arrangement of the lower polyphenyl filler 90 can avoid the overflow of cement mortar during the construction of the cement mortar leveling layer 60, so that the sealing treatment effect of the upper construction joint and the lower construction joint is better.
Preferably, the distance between the upper construction joint and the lower construction joint is 20 mm.
Preferably, the strength grade of both the upper cement mortar screed layer 50 and the lower cement mortar screed layer 60 is greater than or equal to M15.
In another embodiment of the present invention, as shown in fig. 2, both the upper anchor 30 and the lower anchor 40 are L-shaped anchors. This may contribute to a stronger structural strength of the L-shaped ladder beam 200.
Wherein the bottom end of the upper anchor bolt 30 extends to the transverse segment 220.
The bottom end of the lower anchor bolt 40 extends to the vertical section 210.
The above-mentioned structural arrangement of the upper anchor bolt 30 and the lower anchor bolt 40 further facilitates the stable connection between the vertical section 210 and the horizontal section 220, so that the connection between the horizontal section 220 and the vertical section 210 is not easily broken.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a subtract heavy prefabricated scissors ladder which characterized in that: the method comprises the following steps:
the prefabricated ladder section comprises an upper ladder section and a lower ladder section which are formed by a central cross section, wherein an upper connection step is formed at the lower end of the upper ladder section, a T-shaped pin key hole is formed in the upper connection step, a lower connection step is formed at the upper end of the lower ladder section, and a straight pin key hole is formed in the lower connection step;
the L-shaped ladder beam comprises a vertical section and a transverse section connected with the vertical section, wherein an upper anchor bolt extends out of the vertical section, and a lower anchor bolt extends out of the transverse section;
the vertical section is arranged below the upper connection step, the upper anchor bolt is inserted into the T-shaped pin key hole, a gasket which is sleeved outside the upper anchor bolt and abuts against the step in the T-shaped pin key hole is arranged in the T-shaped pin key hole, the upper end of the upper anchor bolt is in threaded connection with a nut which abuts against the gasket, and the space in the T-shaped pin key hole, which is positioned above the gasket, is sealed by mortar;
the transverse section is arranged below the lower connection step, the lower anchor bolt is inserted into the straight pin key hole, a gap between the lower anchor bolt and the straight pin key hole is filled with grouting material, and the space, close to the upper end of the straight pin key hole, of the straight pin key hole is plugged with the grouting material through mortar.
2. A weight-reducing prefabricated scissor ladder as claimed in claim 1, wherein: and a mounting seam is formed between the side surface of the vertical section and the side surface of the lower connection step, and a middle polyphenyl filling body, a PE rod and an adhesive injection layer are filled in the mounting seam according to the sequence.
3. A weight-reducing prefabricated scissor ladder as claimed in claim 2, wherein: the distance between the mounting seams is 30 mm.
4. A weight-reducing prefabricated scissor ladder as claimed in claim 1, wherein: an upper construction joint is formed between the top of the vertical section and the bottom of the upper connection step, an upper cement mortar leveling layer is arranged in the upper construction joint, a lower construction joint is formed between the top of the transverse section and the bottom of the lower connection step, and a lower cement mortar leveling layer is arranged in the lower construction joint.
5. A weight-reducing prefabricated scissor ladder as claimed in claim 4, wherein: and an oil felt layer is also arranged between the upper cement mortar leveling layer and the bottom of the upper connection step.
6. A weight-reducing prefabricated scissor ladder as claimed in claim 4, wherein: the top of the vertical section is provided with an upper polyphenyl filling body for preventing cement mortar of the upper cement mortar leveling layer from overflowing at a position close to the outer end part of the vertical section, and the top of the transverse section is provided with a lower polyphenyl filling body for preventing cement mortar of the lower cement mortar leveling layer from overflowing at a position close to the outer end part of the transverse section.
7. A weight-reducing prefabricated scissor ladder as claimed in claim 4, wherein: the distance between the upper construction joint and the lower construction joint is 20 mm.
8. A weight-reducing prefabricated scissor ladder as claimed in claim 4, wherein: the strength grades of the upper cement mortar leveling layer and the lower cement mortar leveling layer are both more than or equal to M15.
9. A weight-reducing prefabricated scissor ladder according to any one of claims 1 to 8, wherein: the upper anchor bolt and the lower anchor bolt are both L-shaped anchor bolts;
the bottom end of the upper anchor bolt extends to the transverse section, and/or the bottom end of the lower anchor bolt extends to the vertical section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110686169.7A CN113565276A (en) | 2021-06-21 | 2021-06-21 | Weight-reducing prefabricated scissor ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110686169.7A CN113565276A (en) | 2021-06-21 | 2021-06-21 | Weight-reducing prefabricated scissor ladder |
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| Publication Number | Publication Date |
|---|---|
| CN113565276A true CN113565276A (en) | 2021-10-29 |
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|---|---|---|---|
| CN202110686169.7A Pending CN113565276A (en) | 2021-06-21 | 2021-06-21 | Weight-reducing prefabricated scissor ladder |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206016099U (en) * | 2016-11-08 | 2017-03-15 | 安徽省建筑设计研究院有限责任公司 | A kind of light prefabricated shears ladder of configuration butterfly beam |
| CN208396179U (en) * | 2018-05-11 | 2019-01-18 | 同圆设计集团有限公司 | A kind of prefabricated cantilever stair |
| CN209494148U (en) * | 2018-11-22 | 2019-10-15 | 广东博意建筑设计院有限公司 | A kind of precast concrete splicing staircase structure |
| CN209686743U (en) * | 2019-01-10 | 2019-11-26 | 杭州江润科技有限公司 | Precast stair connecting node |
| CN211923283U (en) * | 2019-12-12 | 2020-11-13 | 浙江省建筑设计研究院 | Prefabricated scissors ladder structure |
-
2021
- 2021-06-21 CN CN202110686169.7A patent/CN113565276A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206016099U (en) * | 2016-11-08 | 2017-03-15 | 安徽省建筑设计研究院有限责任公司 | A kind of light prefabricated shears ladder of configuration butterfly beam |
| CN208396179U (en) * | 2018-05-11 | 2019-01-18 | 同圆设计集团有限公司 | A kind of prefabricated cantilever stair |
| CN209494148U (en) * | 2018-11-22 | 2019-10-15 | 广东博意建筑设计院有限公司 | A kind of precast concrete splicing staircase structure |
| CN209686743U (en) * | 2019-01-10 | 2019-11-26 | 杭州江润科技有限公司 | Precast stair connecting node |
| CN211923283U (en) * | 2019-12-12 | 2020-11-13 | 浙江省建筑设计研究院 | Prefabricated scissors ladder structure |
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Application publication date: 20211029 |
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