CN113338647A - Construction method of edge-facing protective railing - Google Patents
Construction method of edge-facing protective railing Download PDFInfo
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- CN113338647A CN113338647A CN202110578114.4A CN202110578114A CN113338647A CN 113338647 A CN113338647 A CN 113338647A CN 202110578114 A CN202110578114 A CN 202110578114A CN 113338647 A CN113338647 A CN 113338647A
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- precast beam
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- steel pipe
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
- E04G21/3223—Means supported by building floors or flat roofs, e.g. safety railings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A construction method of an edge protection railing is characterized by comprising the following steps: a. finishing the construction of a frame column (15), b, finishing the hoisting of a prestressed precast beam (1), C, taking a plurality of sections of 1350mm long phi 48x3 vertical steel pipes (4), d, taking a plurality of 150mm long phi 20 steel bars (5), making into Z-shaped steel bars, e, installing 3 horizontal steel pipes (7) by adopting fasteners on the vertical steel pipes, f, outside the vertical steel pipes, adopting a zinc-plated iron wire to fix a green safety net, g, installing part of upper steel bars (9) of a precast beam superposition (13) in sequence, h, all precast beams, and pouring 150mm thick C40 concrete (12) after the steel bar truss floor bearing plate steel bars are installed. The construction method of the near-edge guard rail has the advantages of simplifying the design method of the original near-edge guard rail, reducing the construction difficulty and danger of the near-edge guard rail, improving the labor efficiency of workers, reducing the engineering cost and accelerating the construction period.
Description
Technical Field
The invention relates to a protective railing for building construction, in particular to a construction method of an edge protective railing.
Background
Plastic PVC sleeves with the diameter of 50mm are pre-embedded in the precast beam at the distance of 1.5m in the production process of the precast beam at the periphery of the reservoir area, and holes are reserved on the precast beam; after the precast beam is hoisted, a single scaffold steel pipe is inserted into the reserved hole to serve as a horizontal stress support, and the two sides of the precast beam are respectively fastened by a fastener and the precast beam is clamped tightly; the end parts of the horizontal rods are provided with vertical rod pieces, the height of the rod pieces is required to meet the condition that the total height is not less than 1.2m higher than the finished surface of the floor slab, the distance between the top horizontal rod and the finished surface of the floor slab is 1200mm, the height of the bottom horizontal rod above the ground is not more than 600mm, and the middle part of the horizontal rod is additionally provided with one horizontal rod; one to two longitudinal scaffold steel tubes are fixedly arranged on the horizontal rod piece along the longitudinal direction of the beam, the distance between the scaffold steel tubes is generally not more than 300mm, and the scaffold boards are fully paved after the installation is finished; the outside side rod pieces are fully hung with a dense mesh safety net and provided with skirting boards, and the skirting boards are coated with red and white warning color paint. This technique has several problems:
1. the construction difficulty is high, the processing and production difficulty of the precast beam is increased, and meanwhile, the difficulty and the danger of the construction of workers are increased.
2. The construction speed is slow, the efficiency of workers is low, the cost is relatively high, and the construction period is slow.
3. The horizontal thrust resistance of the protective barrier is weaker.
The known construction methods of the edge guard rail have various inconveniences and problems as described above.
Disclosure of Invention
The invention aims to provide a safe and reliable construction method of an edge protection guardrail.
In order to achieve the purpose, the technical solution of the invention is as follows:
a construction method of an edge protection railing, which is a construction method of an edge protection railing and adopts the original construction mode of the edge protection railing: plastic PVC sleeves with the diameter of 50mm are pre-embedded in the precast beam at the distance of 1.5m in the production process of the precast beam, and holes are reserved on the precast beam; after the precast beam is hoisted, a single scaffold steel pipe is inserted into the reserved hole to serve as a horizontal stress support, and the two sides of the precast beam are respectively fastened by a fastener and the precast beam is clamped tightly; the end parts of the horizontal rods are provided with vertical rod pieces, the height of the rod pieces is required to meet the condition that the total height is not less than 1.2m higher than the finished surface of the floor slab, the distance between the top horizontal rod and the finished surface of the floor slab is 1200mm, the height of the bottom horizontal rod above the ground is not more than 600mm, and the middle part of the horizontal rod is additionally provided with one horizontal rod; one to two longitudinal scaffold steel tubes are fixedly arranged on the horizontal rod piece along the longitudinal direction of the beam, the distance between the scaffold steel tubes is generally not more than 300mm, and the scaffold boards are fully paved after the installation is finished; the construction method of the near-edge guard rail is characterized by comprising the following steps of:
a. after the frame column construction is finished, hoisting the prestressed precast beam after the frame column concrete reaches 75% strength;
b. after the hoisting of the prestressed precast beam is finished, paving the steel bar truss floor bearing plate, and firmly fixing the steel bar truss floor bearing plate and the prestressed precast beam;
c. taking a plurality of sections of 1350mm long phi 48 multiplied by 3 vertical steel pipes, arranging the vertical steel pipes at a distance of 2000mm, and performing primary welding on the vertical steel pipes and stirrups on the outermost side of the upper part of the superposed part of the precast beam by adopting 6mm high welding seams to firmly weld;
d. taking a plurality of 150mm long phi 20 steel bars to manufacture Z-shaped steel bars, and firmly welding the two ends of the Z-shaped steel bars with a second stirrup at the outer side of the upper part of the overlapped part of the phi 48 multiplied by 3 vertical steel pipes and the precast beam by adopting a 6mm high welding line respectively;
e. installing 3 phi 48 multiplied by 3 horizontal steel pipes on the vertical steel pipes by adopting fasteners, wherein the distance between the horizontal steel pipe at the lowest end and the top end of the superposed part of the precast beam is not more than 20mm, and the horizontal steel pipe at the upper end is flush with the top end of the vertical steel pipe;
f. after the green safety net is fixed on the outer side of the vertical steel pipe by adopting galvanized iron wires, the protective railing has the near-edge protection capability in the steel bar construction stage;
g. sequentially installing upper reinforcing steel bars of the superposed part of the precast beam, upper negative bending moment of the joint part of the precast beam and the steel bar truss floor bearing plate, lower connecting reinforcing steel bars and floor bearing plate distribution reinforcing steel bars;
h. after all precast beams, steel bar truss floor carrier plate reinforcing bar installation, pour 150mm thick C40 concrete, after C40 concrete strength reached the designing requirement, after vertical steel pipe and C40 concrete have certain a body coupling ability, the protection railing had stronger anti horizontal thrust ability.
The construction method of the edge protection railing can be further realized by adopting the following technical measures.
In the method, the vertical steel pipe and the stirrup at the upper part of the overlapped part of the precast beam are welded twice, so that the vertical steel pipe has horizontal thrust resistance.
After the technical scheme is adopted, the construction method of the near-edge protective railing has the following advantages:
1. the design method of the original limb guard rail is simplified, and the construction difficulty and the danger of the limb guard rail are reduced;
2. the labor efficiency of workers is improved, the engineering cost is reduced, and the construction period is shortened.
Drawings
FIG. 1 is a construction floor plan of an edge guard rail according to an embodiment of the present invention;
fig. 2 is a construction schematic view of an edge protection balustrade according to an embodiment of the present invention.
In the figure: 1, pre-stressed precast beam; 2, hooping; 3, steel bar truss floor bearing plates; 4 phi 48 multiplied by 3 vertical steel pipes; 5 phi 20 connecting steel bars; a 66mm weld; 7 phi 48 multiplied by 3 horizontal steel pipes; 8, a safety net; 9 prefabricating upper reinforcing steel bars of the superposed part of the beam; 10 connecting the upper hogging moment and the lower connecting steel bar; 11, distributing steel bars on the floor bearing plate; 12C40 concrete; 13 prefabricating a beam overlapping part; 14 floor slab; 15 frame posts; 16 guard rails.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
Referring to fig. 1-2, the construction method of the near-edge guard rail of the present invention is as follows: plastic PVC sleeves with the diameter of 50mm are pre-embedded in the precast beam at the distance of 1.5m in the production process of the precast beam, and holes are reserved on the precast beam; after the precast beam is hoisted, a single scaffold steel pipe is inserted into the reserved hole to serve as a horizontal stress support, and the two sides of the precast beam are respectively fastened by a fastener and the precast beam is clamped tightly; the end parts of the horizontal rods are provided with vertical rod pieces, the height of the rod pieces is required to meet the condition that the total height is not less than 1.2m higher than the finished surface of the floor slab, the distance between the top horizontal rod and the finished surface of the floor slab is 1200mm, the height of the bottom horizontal rod above the ground is not more than 600mm, and the middle part of the horizontal rod is additionally provided with one horizontal rod; one to two longitudinal scaffold steel tubes are fixedly arranged on the horizontal rod piece along the longitudinal direction of the beam, the distance between the scaffold steel tubes is generally not more than 300mm, and the scaffold boards are fully paved after the installation is finished; the construction method of the near-edge guard rail is characterized by comprising the following steps of:
a. after the frame column 15 is constructed, hoisting the prestressed precast beam 1 after the column concrete reaches 75% strength;
b. after the hoisting of the prestressed precast beam 1 is finished, paving the steel bar truss floor bearing plate 3, and firmly fixing the steel bar truss floor bearing plate 3 and the precast beam 1;
c. taking a plurality of sections of 1350mm vertical steel pipes 4 with the lengths phi of 48 multiplied by 3, arranging the vertical steel pipes at intervals of 2000mm, and adopting 6mm high welding seams 6 to perform primary welding on the steel pipes and the stirrups 2 on the outermost sides of the upper parts of the superposed parts of the precast beams to be firm;
d. taking a plurality of 150mm long phi 20 steel bars 5, manufacturing the steel bars into a Z shape, welding two ends of the steel bars with 6mm high welding seams 6 with the phi 48x3 vertical steel pipe 4 and a second steel bar 2 on the outer side of the upper part of the superposed part of the precast beam firmly again, and welding twice to ensure that the phi 48x3 vertical steel pipe 4 has enough horizontal thrust resistance;
e. installing 3 phi 48 multiplied by 3 horizontal steel pipes 7 on the phi 48 multiplied by 3 vertical steel pipes 4 by fasteners, wherein the distance between the lowest end steel pipe and the top end of the superposed 13 part of the precast beam is not more than 20mm, and the upper end horizontal steel pipe 7 is parallel to the top end of the vertical steel pipe 4;
f. in the vertical steel pipe 4 outside of phi 48X3, adopt behind the fixed green safety net of galvanized iron wire, guard rail 16 has tentatively had reinforcing bar construction stage and has faced limit protective capacities
g. Sequentially installing 13 parts of upper reinforcing steel bars 9 of the precast beam superposition, upper negative bending moment and lower connecting reinforcing steel bars 9 of the joint part of the precast beam and the steel bar truss floor bearing plate and floor bearing plate distribution reinforcing steel bars 11;
h. after all precast beams and steel bar truss floor support plate steel bars are installed, C40 concrete 12 with the thickness of 150mm is poured, after the strength of the C40 concrete meets the design requirement, after the phi 48 multiplied by 3 vertical steel pipes 4 and the C40 concrete 12 have certain integrated connection capacity, the near-edge protective railing 16 has stronger horizontal thrust resistance. Has the capability of near-edge protection during the mechanical construction stage on the floor, such as the impact of a forklift and the collision of a small crane.
Compared with the prior art, the construction method of the near-edge guard rail has the advantages of being simpler, higher in efficiency and faster, improving the labor efficiency of workers, greatly reducing engineering measure cost and construction risk and shortening the construction period.
The construction method of the edge protection railing is applied to the research and development application center project of the Wenzhou Pingyang Wan-Yu warehouse robot and the manufacturing project of the Wenzhou Pingyang Wan-Yu warehouse robot, and the effect is obvious.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.
Claims (2)
1. A construction method of an edge protection railing, which adopts the original construction mode of the edge protection railing: plastic PVC sleeves with the diameter of 50mm are pre-embedded in the precast beam at the distance of 1.5m in the production process of the precast beam, and holes are reserved on the precast beam; after the precast beam is hoisted, a single scaffold steel pipe is inserted into the reserved hole to serve as a horizontal stress support, and the two sides of the precast beam are respectively fastened by a fastener and the precast beam is clamped tightly; the end parts of the horizontal rods are provided with vertical rod pieces, the height of the rod pieces is required to meet the condition that the total height is not less than 1.2m higher than the finished surface of the floor slab, the distance between the top horizontal rod and the finished surface of the floor slab is 1200mm, the height of the bottom horizontal rod above the ground is not more than 600mm, and the middle part of the horizontal rod is additionally provided with one horizontal rod; one to two longitudinal scaffold steel tubes are fixedly arranged on the horizontal rod piece along the longitudinal direction of the beam, the distance between the scaffold steel tubes is generally not more than 300mm, and the scaffold boards are fully paved after the installation is finished; the construction method of the near-edge guard rail is characterized by comprising the following steps of:
a. after the frame column (15) is constructed, hoisting the prestressed precast beam (1) after the frame column concrete reaches 75% strength;
b. after the prestressed precast beam (1) is hoisted, paving the steel bar truss floor bearing plate (3), and firmly fixing the steel bar truss floor bearing plate (3) and the prestressed precast beam (1);
c. taking a plurality of sections of 1350mm long phi 48 multiplied by 3 vertical steel pipes (4), arranging the vertical steel pipes at a distance of 2000mm, and adopting 6mm high welding seams (6) to weld the vertical steel pipes and stirrups (2) on the outermost side of the upper part of the superposed part of the precast beam for the first time to be firm;
d. taking a plurality of 150mm long phi 20 steel bars (5) to manufacture Z-shaped steel bars, and firmly welding the two ends of the Z-shaped steel bars with 6mm high welding seams (6) with phi 48 multiplied by 3 vertical steel pipes (4) and second stirrups (2) on the outer sides of the upper parts of the superposed parts of the precast beams again;
e. installing 3 phi 48 multiplied by 3 horizontal steel pipes (7) on the vertical steel pipe (4) by adopting a fastener, wherein the distance between the horizontal steel pipe at the lowest end and the top end of the superposed beam (13) part is not more than 20mm, and the horizontal steel pipe (7) at the upper end is parallel and level to the top end of the vertical steel pipe (4);
f. after the green safety net is fixed on the outer side of the vertical steel pipe (4) by adopting galvanized iron wires, the protective railing (16) has the edge protection capability in the reinforcing steel bar construction stage;
g. sequentially installing upper reinforcing steel bars (9) of a precast beam superposition (13) part, upper negative bending moment and lower connecting reinforcing steel bars (9) of a precast beam and reinforcing steel bar truss floor bearing plate connecting part and floor bearing plate distribution reinforcing steel bars (11);
h. after all precast beams, steel bar truss floor carrier plate reinforcing bar installation, pour 150mm thick C40 concrete (12), after C40 concrete strength reached the designing requirement, after vertical steel pipe (4) and C40 concrete (12) had certain a body coupling ability, guard rail (16) had stronger anti horizontal thrust ability.
2. The construction method of the edge-facing protective railing according to claim 1, characterized in that the vertical steel pipe (4) is ensured to have horizontal thrust resistance by welding the vertical steel pipe and the stirrup (2) at the upper part of the overlapped part of the precast beam twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110578114.4A CN113338647A (en) | 2021-05-26 | 2021-05-26 | Construction method of edge-facing protective railing |
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| CN202110578114.4A CN113338647A (en) | 2021-05-26 | 2021-05-26 | Construction method of edge-facing protective railing |
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| GB2027768A (en) * | 1979-01-10 | 1980-02-27 | Aireborough Hydraulics Ltd | Adjustable Hanger for a Safety- rail |
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| CN203487487U (en) * | 2013-07-04 | 2014-03-19 | 重庆交通大学 | Anti-collision guardrail structure |
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| CN111979895A (en) * | 2020-08-14 | 2020-11-24 | 上海市政工程设计研究总院（集团）有限公司 | Groove connecting structure of prefabricated anti-collision guardrail and adjacent components and construction method thereof |
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-
2021
- 2021-05-26 CN CN202110578114.4A patent/CN113338647A/en active Pending
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| CN109610484A (en) * | 2018-12-07 | 2019-04-12 | 杭州江润科技有限公司 | Intercept water side slope of embankment ecological protection and construction method |
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| CN111979895A (en) * | 2020-08-14 | 2020-11-24 | 上海市政工程设计研究总院（集团）有限公司 | Groove connecting structure of prefabricated anti-collision guardrail and adjacent components and construction method thereof |
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Application publication date: 20210903 |