CN212223791U - Safety protection device for extrusion side wall construction - Google Patents
Safety protection device for extrusion side wall construction Download PDFInfo
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- CN212223791U CN212223791U CN201922111539.5U CN201922111539U CN212223791U CN 212223791 U CN212223791 U CN 212223791U CN 201922111539 U CN201922111539 U CN 201922111539U CN 212223791 U CN212223791 U CN 212223791U
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Abstract
The utility model relates to a construction protection field, concretely relates to safety device that extrusion side wall construction used, including protection network system, protection supporting platform frame and pre-buried mounting, protection supporting platform frame includes rectangle bottom plate frame, perpendicular to the fixed enclosure rail of rectangle bottom plate frame to and be on a parallel with the baffle roof-rack of rectangle bottom plate frame installation enclosure rail upper end, protection network system includes top protection network, rail protection network and bottom protection network, hangs respectively and lays on rectangle bottom plate frame, enclosure rail and baffle roof-rack; the pre-buried mounting is Z-shaped for hanging the protection supporting platform frame. The device effectively carries out safety protection to the front dam slope of extrusion side wall, has improved the safe operation environment when extrusion side wall and bedding material construction. Meanwhile, a safe and convenient operation platform is provided for dam slope quality defect repair, and the construction quality of the extrusion side wall and the concrete panel is improved.
Description
Technical Field
The utility model relates to a construction protection field, concretely relates to safety device that extrusion side wall construction was used.
Background
A concrete face slab, an extrusion concrete side wall, a cushion zone, a transition zone, a main rockfill and a secondary rockfill zone are sequentially arranged on a main structural layer of a dam body from a water-facing surface to a water-backing surface. The upstream dam slope ratio is 1:1.4, and the slope is steeper. According to the characteristics of the dam shape, the construction sequence of the upstream face of each filling layer of the dam body is generally as follows: side wall concrete extrusion molding → bedding material filling → transition material filling → primary and secondary rockfill material.
And (3) rockfill material filling: wherein, the extrusion side wall and the bedding material filling are mainly formed by the construction of manual auxiliary equipment. The slope of the formed extruded concrete is steeper and smoother. Along with the rising of dam filling height, the risk of safety accidents caused by sliding and falling of personnel, tools and edges is higher and higher. Meanwhile, in the construction process of the extruded side wall, due to the influence of various factors such as air temperature, the working condition of a stop surface, the proficiency of an operator and the like, the broken surface line type and the flatness of the molded extruded concrete side wall sometimes happen when the broken surface line type and the flatness do not meet the local quality problems such as design and standard requirements, and slope manual repairing and leveling are repeatedly carried out. The development of these works must be provided with reliable safety protection devices to ensure safe construction.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide a safety device of extrusion side wall construction usefulness.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
the safety protection device for extrusion side wall construction comprises a protection network system, a protection support platform frame and a pre-buried fixing piece, wherein the protection support platform frame comprises a rectangular bottom plate frame, a containment fence fixed perpendicular to the rectangular bottom plate frame, and a baffle top frame arranged at the upper end of the containment fence in parallel with the rectangular bottom plate frame, and the rectangular bottom plate frame, the containment fence and the baffle top frame are all formed by assembling a plurality of seamless steel pipes; the protective net system comprises a top protective net, a fence protective net and a bottom protective net, wherein the top protective net, the fence protective net and the bottom protective net are woven into a net shape by steel wires and are respectively hung and paved on a rectangular bottom plate frame, a surrounding fence and a baffle top frame; the embedded fixing piece is Z-shaped, the two-thirds length of the whole embedded fixing piece is embedded in the extrusion side wall, and the rest embedded fixing piece extends out of the extrusion side wall and is used for hanging the protective supporting platform frame.
And further limiting, four corner positions of the meshed top protective net, the meshed fence protective net and the meshed bottom protective net form a ring shape, and the four corner positions are hooked on the exposed end of the seamless steel pipe to be fixed during installation.
Further inject, rectangle bottom plate frame, enclosure rail and baffle roof-rack all are formed by a plurality of seamless steel pipe welding, and interval 400~450mm welds into the frame shape between the seamless steel pipe.
Further limiting, a high-density base plate is laid on the bottom protective net.
Further limiting, the pre-buried fixing piece is made of 28 mm-diameter first-grade steel and at least exposes 150mm, the length of a hook part of each of two ends of the Z-shaped pre-buried fixing piece is 150mm, and the length of the middle part of the Z-shaped pre-buried fixing piece is 13 times as long as that of the hook part.
Further inject, one side that extrusion side wall was kept away from to the rectangle bottom plate frame still is equipped with vertical downwardly extending's pole setting, and the lower end welding of pole setting has the backup pad.
Further inject, pre-buried mounting arranges along the domatic equidistance of extrusion boundary wall, and when protection supporting platform frame hung on the pre-buried mounting of last level, pole setting and backup pad supported on the pre-buried mounting of next level.
The utility model has the advantages that: 1. by protective net system, protection supporting platform frame and pre-buried mounting safety device, effectively carry out safety protection to the front dam slope of extrusion side wall, improved the safe operation environment when extrusion side wall and bedding material are under construction. Meanwhile, a safe and convenient operation platform is provided for dam slope quality defect repair, and the construction quality of the extrusion side wall and the concrete panel is improved.
2. The safety in the construction process is effectively improved, the occurrence of personal casualty accidents is avoided to the maximum extent, and the good image of the safety civilized construction of enterprises is shown.
3. The smooth implementation of projects is promoted, the construction efficiency is improved, the engineering quality is effectively improved, and the enterprise quality brand is improved.
Drawings
FIG. 1 is a schematic view of the usage state of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic top view of the structure of FIG. 1;
FIG. 4 is a front view of the safety shield apparatus;
FIG. 5 is a schematic top view of the safety shield apparatus;
fig. 6 is a schematic view of a planar structure of the embedded fastener fixed on the extruded side wall.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.
As shown in fig. 1, in this embodiment, taking a concrete panel rock-fill dam with a dam crest elevation of 1699.5m, a maximum dam height of 51.5m, and a dam crest total length of 230m as an example, the front dam ratio is 1:1.4, and the concrete panel is C25, the C15 extrusion sidewall 1, the bedding material, the transition material, the main rock-fill, the secondary rock-fill filling, and the like in sequence from upstream to downstream.
The safety protection device for the extrusion side wall construction shown in the figures 1-6 comprises a protection network system 2, a protection support platform frame 3 and a pre-buried fixing part 4, wherein the protection support platform frame 3 comprises a rectangular bottom plate frame 30, a guard rail 31 fixed by the rectangular bottom plate frame 30 and a baffle top frame 32 parallel to the rectangular bottom plate frame 30 and arranged at the upper end of the guard rail 31, the rectangular bottom plate frame 30, the guard rail 31 and the baffle top frame 32 are all formed by welding a plurality of seamless steel pipes, and the interval between the seamless steel pipes is 400-450 mm, so that the framework shape is formed by welding. The protective net system 2 comprises a top protective net, a fence protective net and a bottom protective net, the top protective net, the fence protective net and the bottom protective net are woven into a net shape by steel wires, four corner parts of the net-shaped top protective net, the fence protective net and the bottom protective net form a ring shape, and the net-shaped top protective net, the fence protective net and the bottom protective net are hooked on the end of an exposed seamless steel pipe to be fixed during installation. And a high-density base plate 5 with the thickness of 10mm is laid on the bottom protective net for workers to stand. Pre-buried mounting 4 is the zigzag, and two-thirds length of whole pre-buried mounting 4 is pre-buried in extrusion side wall 1, and remaining pre-buried mounting 4 extends extrusion side wall 1 for hang protection supporting platform frame 3, utilize the steel pipe adapter directly to lock rectangle bottom plate frame 30 on pre-buried mounting 4 during the installation.
Wherein rectangle bottom plate frame 30 needs the bearing workman, so higher to its requirement of intensity, in this embodiment, rectangle bottom plate frame 30 adopts 8 seamless steel pipes 6m, 3, 3.7m, 51 m, 32 m, total length 79.1m of 48mm 3.5mm, connects between the steel pipe and adopts the welding.
The pre-buried fixing piece 4 is made of 28 mm-diameter first-grade steel and is at least exposed 150mm, the length of the hook parts 40 of the two ends of the Z-shaped pre-buried fixing piece 4 is 150mm, and the length of the middle part of the Z-shaped pre-buried fixing piece is 13 times as long as that of the hook parts. The whole safety protection device has the following dead weight: 405.14kg, load: 190kg, the height of the enclosure fence is 1.3m, and the width of the workbench of the rectangular bottom plate frame 30 is 0.9 m.
(1) Yield load and ultimate load of 28mm reinforcing bar:
the cross-sectional area of the 28mm first-level steel bar is as follows:
S=πr²=3.14×14²=615.44mm²,
28mm first grade reinforcing bar HPB300, its yield strength is: 300MPa, tensile strength: 420 MPa;
the yield load is therefore: 300MPa × 615.44mm =184.6KN
The ultimate load is: 420MPa × 615.44mm =258.48KN
(2) And the dosage of the dam surface of the 28mm anchoring steel bar is about: 1160 steel bars, each steel bar is 1.75m long, 4.834kg/m, and the total weight of the steel bars is as follows: 1160 × 1.75 × 4.834=9813 kg;
preferably, one side of the rectangular bottom plate frame 30, which is far away from the extrusion side wall 1, is further provided with a vertical rod 6 extending downwards, and a support plate is welded at the lower end of the vertical rod 6. The embedded fixing pieces 4 are arranged along the slope surface of the extrusion side wall 1 at equal intervals, and when the protective supporting platform frame 3 is hung on the embedded fixing piece 4 at the upper stage, the vertical rod 6 and the supporting plate are propped against the embedded fixing piece 4 at the lower stage (as shown in fig. 2). The safety protection device is used for strengthening and supporting the whole safety platform, and the whole weight of the safety protection device is shared by the upper-level embedded fixing piece 4 and the lower-level embedded fixing piece 4. When the protective device needs to be lifted, the excavator is used for lifting to a proper height position, and the supporting beam suspension sling is installed again to enter a normal construction protection state.
It is right above the utility model provides a safety device of extrusion side wall construction usefulness introduces in detail. The description of the specific embodiments is only for the purpose of helping understanding the method of the present invention and the core idea thereof, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims (7)
1. Safety device of extrusion side wall construction usefulness, its characterized in that: comprises a protective net system, a protective supporting platform frame and an embedded fixing piece,
the protective supporting platform frame comprises a rectangular bottom plate frame, a containment fence fixed perpendicular to the rectangular bottom plate frame, and a baffle top frame arranged at the upper end of the containment fence in parallel with the rectangular bottom plate frame, wherein the rectangular bottom plate frame, the containment fence and the baffle top frame are all assembled by a plurality of seamless steel pipes;
the protective net system comprises a top protective net, a fence protective net and a bottom protective net, wherein the top protective net, the fence protective net and the bottom protective net are woven into a net shape by steel wires and are respectively hung and paved on a rectangular bottom plate frame, a surrounding fence and a baffle top frame;
the embedded fixing piece is Z-shaped, the two-thirds length of the whole embedded fixing piece is embedded in the extrusion side wall, and the rest embedded fixing piece extends out of the extrusion side wall and is used for hanging the protective supporting platform frame.
2. The safety shield for extruded sidewall construction as recited in claim 1, further comprising: four corner parts of the meshed top protective net, the fence protective net and the bottom protective net form a ring shape, and are hooked on the exposed end of the seamless steel pipe to be fixed during installation.
3. The safety shield for extruded sidewall construction as recited in claim 1, further comprising: the rectangular bottom plate frame, the enclosure fence and the baffle top frame are all formed by welding a plurality of seamless steel tubes, and the space between the seamless steel tubes is 400-450 mm, so that the seamless steel tubes are welded into a frame shape.
4. The safety shield for extruded sidewall construction as recited in claim 1, further comprising: and a high-density backing plate is laid on the bottom protective net.
5. The safety shield for extruded sidewall construction as recited in claim 1, further comprising: the pre-buried fixing piece adopts 28mm diameter first grade steel, exposes 150mm at least, and the crotch portion length of Z type pre-buried fixing piece both ends is 150mm, and the middle part length of Z type pre-buried fixing piece is 13 times length of crotch portion.
6. The safety shield apparatus for extrusion sidewall construction as set forth in claim 3 or 5, wherein: one side of the rectangular bottom plate frame, which is far away from the extrusion side wall, is also provided with a vertical downwards extending vertical rod, and a support plate is welded at the lower end head of the vertical rod.
7. The safety shield for extruded sidewall construction as recited in claim 6, wherein: the pre-buried mounting is arranged along the domatic equidistance of extrusion side wall, and when protection supporting platform frame hung on the pre-buried mounting of last level, pole setting and backup pad supported on the pre-buried mounting of next level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922111539.5U CN212223791U (en) | 2019-11-30 | 2019-11-30 | Safety protection device for extrusion side wall construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922111539.5U CN212223791U (en) | 2019-11-30 | 2019-11-30 | Safety protection device for extrusion side wall construction |
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| CN212223791U true CN212223791U (en) | 2020-12-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561914A (en) * | 2022-03-04 | 2022-05-31 | 中国电建集团西北勘测设计研究院有限公司 | Drainage structure in concrete panel rock-fill dam cushion zone in cold region |
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2019
- 2019-11-30 CN CN201922111539.5U patent/CN212223791U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561914A (en) * | 2022-03-04 | 2022-05-31 | 中国电建集团西北勘测设计研究院有限公司 | Drainage structure in concrete panel rock-fill dam cushion zone in cold region |
| CN114561914B (en) * | 2022-03-04 | 2024-01-19 | 中国电建集团西北勘测设计研究院有限公司 | Drainage structure for bedding layer area of concrete face rockfill dam in cold area |
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