CN111676850A - Corrugated steel wind-resistant snow-retaining wall structure and manufacturing and mounting process thereof - Google Patents
Corrugated steel wind-resistant snow-retaining wall structure and manufacturing and mounting process thereof Download PDFInfo
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- CN111676850A CN111676850A CN202010321765.0A CN202010321765A CN111676850A CN 111676850 A CN111676850 A CN 111676850A CN 202010321765 A CN202010321765 A CN 202010321765A CN 111676850 A CN111676850 A CN 111676850A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/02—Snow fences or similar devices, e.g. devices affording protection against sand drifts or side-wind effects
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/02—Snow fences or similar devices, e.g. devices affording protection against sand drifts or side-wind effects
- E01F7/025—Devices specially adapted for protecting against wind, e.g. screens, deflectors or attenuators at tunnel or lock entrances
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a corrugated steel wind-resistant snow-proof wall structure and a manufacturing and installing process thereof, wherein the wind-resistant snow-proof wall is composed of a plurality of sectional bodies, and the end parts of the sectional bodies are overlapped and arranged in a way of overlapping with a parting line; each subsection body comprises an upright post, an upper top plate, a lower bottom plate and an arc cover type cap; the upright posts are vertically arranged at equal intervals, and arc cover type cap posts are arranged at the tops of the upright posts; the upper top plate and the lower bottom plate are formed by mutually connecting the end parts of a plurality of transversely arranged corrugated steel plates through bolts; two ends of each corrugated steel plate are connected with the upright post through bolts; the upper top plate and the lower bottom plate are installed at intervals to form a middle energy dissipation gap; the lower bottom plate is arranged off the ground, and a bottom energy dissipation gap is formed between the lower edge of the lower bottom plate and the ground; a plurality of energy dissipation ventilation holes are arranged on the corrugated steel plate at equal intervals by one corrugation; the wind-blocking snow-blocking wall has good stress characteristics, strong deformation damage resistance and strong durability, adopts full factory production in the manufacturing and mounting process, and has the advantages of short construction period, less quality damage and the like.
Description
Technical Field
The invention relates to the technical field of wind resistance and snow protection, in particular to a corrugated steel wind resistance and snow protection wall structure and a manufacturing and mounting process thereof.
Background
Roads constructed in alpine and high-altitude areas are affected by wind, snow and snow in more than one half of the whole year. When wind blows snow, the visibility of the road is reduced sharply and the effective visual range is shortened due to wind and snow flow, and traffic blockage (snowing hills) is troubled by vehicles and drivers and passengers after a large amount of wind blows snow and is accumulated on the road surface, so that major traffic safety accidents are frequent. At present, although windbreak and snow blowing measures such as turf piling walls, earth banking walls or dry-masonry stone snow retaining walls are adopted, the effect is slight, and the amount of snow accumulated on the road surface is not reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the corrugated steel wind-blocking snow-blocking wall structure and the manufacturing and installing process thereof adopt the corrugated steel plate, the upright post and other components, and install the wind-blocking snow-blocking wall according to the requirements of strength, rigidity, height, length adjustment, use function and the like according to different environmental conditions. The problem that traffic blockage (large snow seal) troubles vehicles and drivers and passengers after a large amount of wind blows snow and is accumulated on the road surface and serious traffic safety accidents occur frequently is solved.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a corrugated steel wind-resistant snow-retaining wall structure is composed of a plurality of sectional bodies, wherein the end parts of the sectional bodies are overlapped, spaced and overlapped; each subsection body comprises an upright post, an upper top plate, a lower bottom plate and an arc cover type cap; the plurality of upright posts are vertically arranged at equal intervals, and arc cover type cap posts are arranged at the tops of the upright posts; the upper top plate and the lower bottom plate are formed by mutually connecting the end parts of a plurality of transversely arranged corrugated steel plates through bolts; two ends of each corrugated steel plate are connected with the upright post through bolts; the upper top plate and the lower bottom plate are installed at intervals to form a middle energy dissipation gap; the lower bottom plate is arranged off the ground, and a bottom energy dissipation gap is formed between the lower edge of the lower bottom plate and the ground; a plurality of energy dissipation ventilation holes are formed in the corrugated steel plate at intervals of one corrugation.
Preferably, the corrugated steel plate has the wave pitch of 200mm, the wave height of 55mm, the plate thickness of 4mm, the length of a single plate piece of 4000mm and the width of 1280 mm; the upright post is a steel pipe with the diameter of 140mm and the wall thickness of 4.5mm, and the arc cover type cap is matched with the upright post; m16 bolts of 8.8S are adopted for connection between the corrugated steel plates, and U-shaped bolts with the diameter of 16mm are adopted for connection between the corrugated steel plates and the steel upright posts.
Preferably, the upper and lower widths of the middle energy dissipation gap are 100 mm; the upper and lower width of the bottom energy dissipation gap is 200 mm; the diameter of the energy dissipation ventilating holes is more than or equal to 30mm, the transverse distance between the energy dissipation ventilating holes is 400mm, and the vertical distance is every other wave crest or wave trough.
Preferably, the length of each subsection body of the wind-blocking snow-blocking wall is 23.25m, the total height is more than or equal to 2.85m (including energy dissipation and wind permeability gaps), the width of an overlapped gap at the end part between the subsection bodies is 60cm, and the overlapped length is 80 cm.
The manufacturing and mounting process of the corrugated steel wind-resistant snow-retaining wall structure comprises the following steps:
(1) manufacturing a corrugated steel plate: selecting and blanking corrugated steel plates; adopting a full-automatic wave press to press waves; punching bolt holes and energy dissipation ventilation holes by using an automatic punching machine; shaping and surface treatment of the corrugated steel plate;
(2) hot-dip galvanizing antiseptic treatment is carried out on the corrugated steel plate, the upright post, the arc cover type post cap and the connecting bolt;
(3) spraying green anticorrosive paint on one side of the corrugated steel plate;
(4) and measuring and lofting and marking points with lime marks at positions 15-25 m away from the plane of the edge of the road shoulder according to the lengths of the segmented bodies of the wind-blocking snow-blocking wall, the overlapping and overlapping relation among the segmented bodies and the main wind and snow flow direction, wherein the distance between the measuring points is not more than 4m, and checking and rechecking.
(5) Inserting and striking the upright post according to the position of the measuring point by using a small-sized pile driver, and marking a buried depth scale mark in the length range of 2m at the lower end of the upright post before piling; when the problems of column deflection and the like are found in the piling process, the inserting and beating are immediately stopped, and the inserting and beating are carried out after the correction until the buried depth is not less than 1.5 m;
(6) after inserting and hitting all stand columns of a subsection body of the wind-blocking snow-blocking wall, dividing corrugated steel plates into two rows and reserving energy dissipation gaps, and installing transverse corrugations on the stand columns to form an upper top plate and a lower bottom plate; during installation, the stand is located the road bed direction side, and corrugated steel plate is located windward side direction side, and the one side to corrugated steel plate single face spraying green anticorrosive paint is installed towards road bed one side direction.
(7) The corrugated steel plate is clamped on the upright post by adopting a U-shaped bolt and penetrates through double bolt holes of the corrugated steel plate to be connected by wearing a steel gasket and screwing a nut, or is connected by a bolt according to a reserved bolt hole on the upright post; the corrugated steel plates are connected through reserved bolt holes by using bolts; after the installation is finished, whether all the bolts are in leakage connection or not is checked; correcting a torque wrench used for screwing the connecting bolt before use, and checking the torque of the bolt after screwing;
(8) after the wind-blocking snow-blocking wall is installed, the corrugated steel plate is sprayed with an anticorrosive paint surface for inspection; when the damage such as abrasion, scraping and the like is found, the repairing spraying is carried out on site; before spraying, the surface to be sprayed is cleaned and then is subjected to paint supplementing; the spray coating is uniform and complete, consistent in color, flat and smooth in surface, free of missing coating, peeling, stripping, bubbling, dripping tumors or agglomeration, cracks and the like, and is not subjected to anticorrosive coating construction when meeting construction environments which do not meet the performance requirements of anticorrosive spray coating materials, such as rain, snow, fog, wind, sand, flying dust, low air temperature and the like.
Preferably, the average thickness of the anticorrosive zinc coating of the corrugated steel plate, the upright post and the arc cover type cap post in the step (2) is more than or equal to 600g/m2Or the average thickness of the zinc coating is more than or equal to 84 μm, and the minimum thickness is 62 μm; the average thickness of the anticorrosive zinc coating of the connecting bolt is more than or equal to 350g/m2Or the average thickness of the zinc coating is more than or equal to 50 mu m, and the minimum thickness is 36 mu m.
Preferably, the thickness of the total dry film of the corrugated steel plate single-side sprayed with the green anticorrosive paint in the step (3) is not less than 210 μm, and the color is light green.
Preferably, the position of the measurement point in step (4) is determined according to the following conditions:
the distance between the measuring point and the edge plane of the road shoulder is adjusted and determined within the range of 15 m-25 m according to the viewing path and the main wind and snow flow direction angle;
the length of the segmented body of the wind-resistant snow-blocking wall is 23.25m, and the total height is more than or equal to 2.85 m;
the included angle between the section body of the wind-blocking snow-blocking wall and the flow direction angle of the main wind and snow is 60-75 degrees;
the overlapping gap width of the end parts between the segmented bodies of the wind-blocking snow-blocking wall is 60cm, and the overlapping length is 80 cm.
Preferably, when the nut is screwed by the torque wrench in the step (6), the control torque of each nut is 160 N.m-200 N.m, and the relative torque error is not more than +/-5%; the torque wrench adopted for the bolt torque inspection has a torque relative error not greater than +/-3%.
Compared with the prior art, the invention has the following beneficial effects:
(1) the method has very important significance for scientific treatment of snow damage of highway sections blown with snow by wind in plateau high-altitude areas, ecological environment protection, improvement of social benefits, environmental protection benefits, economic benefits and the like, technical support and the like;
(2) the corrugated steel plate adopted in the invention can be processed by self, and the corrugated steel plates with different wall thicknesses, wave shapes (wave pitch and wave height) and sizes can be adopted according to the requirements of strength, rigidity, height and length under different environmental conditions and the requirements of use functions and the like, so that the corrugated steel plate is flexible to use and strong in adaptability.
(3) The invention adopts the corrugated steel plate to combine with the upright post, the inertia moment is obviously increased due to the existence of the corrugations, the stress strain caused by the extra-large wind load can be simultaneously distributed in the axial direction and the radial direction, the stress concentration of the extra-large wind load can be dispersed to a greater extent, the dynamic load of the extra-large wind or the wind-blown snow can be better resisted, the structural safety coefficient is increased, and the invention has excellent characteristic of resisting the heavy wind and snow.
(4) All parts adopt hot-dip galvanizing anti-corrosion layers resisting wind, sand and snow abrasion, and the outer surface of the corrugated steel plate is sprayed with anti-corrosion paint, so that the corrugated steel plate has the durability of super-long service.
(5) Due to the whole-factory production and the whole-assembly construction, the key quality problems of frost heaving, deformation, damage, collapse and the like of the engineering structure caused by special climatic environment conditions in alpine regions can be effectively solved.
(6) The corrugated steel plate does not need loading and unloading equipment, and the laminated bundling and transportation are convenient and quick. The method has the advantages of simple process, convenience, high speed, no need of large-scale mechanical equipment and large amount of manual operation, high production efficiency, convenience for field management, and reduction of the construction period by at least 60% compared with the conventional construction period of piling turf, ridge, slate or concrete snow retaining wall.
(7) The method can greatly utilize steel energy resources, does not excavate, cover or damage permafrost and vegetation during construction, does not generate construction waste, and is favorable for environmental protection.
(8) Compared with the traditional snow retaining wall made of piled turf, ridges, rubble or concrete, the snow retaining wall made of the corrugated steel plates can reduce the construction cost of damaging the environment by at least 10 percent; due to factors such as durability, strong deformation and damage resistance and the like, the maintenance cost is reduced by at least over 60 percent.
(9) The corrugated steel plate snow-retaining wall has unique superiority from the aspects of engineering quality, structural safety, durability, construction period, environmental protection, engineering cost, green traffic and the like, and has very remarkable economic benefit, environmental protection benefit and social benefit.
Drawings
FIG. 1 is a schematic structural view of a corrugated steel wind-blocking snow-blocking wall structure segment according to the present invention;
in the figure: the energy dissipation structure comprises a stand column 1, an upper top plate 2, a lower bottom plate 3, a middle energy dissipation gap 4, a bottom energy dissipation gap 5, an arc cover type cap 6 and an energy dissipation ventilation hole 7.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described as follows:
in one embodiment of the invention, the corrugated steel wind-resistant snow-blocking wall structure is composed of a plurality of segmented bodies, and the end parts of the segmented bodies are overlapped, spaced and overlapped; each subsection body comprises an upright post 1, an upper top plate 2, a lower bottom plate 3 and an arc cover type cap 6 (shown in figure 1); a plurality of upright posts 1 are vertically arranged at equal intervals, and arc cover type cap posts 6 are arranged at the tops of the upright posts 1; the upper top plate 2 and the lower bottom plate 3 are formed by connecting a plurality of corrugated steel plates which are transversely arranged with each other through bolts; two ends of each corrugated steel plate are connected with the upright post 1 through bolts; a middle energy dissipation gap 4 is formed between the upper top plate 2 and the lower bottom plate 3 at intervals; the lower bottom plate 3 is arranged off the ground, and a bottom energy dissipation gap 5 is formed between the lower edge of the lower bottom plate and the ground; a plurality of energy dissipation ventilation holes 7 are arranged on the corrugated steel plate at intervals of one corrugation.
In a specific embodiment of the invention, the corrugated steel plate adopts a wave pitch of 200mm, a wave height of 55mm, a plate thickness of 4mm, a length of a single plate of 4000mm and a width of 1280 mm; the upright post is a steel pipe with the diameter of 140mm and the wall thickness of 4.5mm, and the arc cover type cap is matched with the upright post; the corrugated steel plate is connected by 8.8S M16 bolts, and the corrugated steel plate is connected with the steel upright posts by phi 16mm U-shaped bolts.
In one embodiment of the invention, in order to reduce certain wind resistance load of the wind and snow blocking wall and increase the wind resistance stability of the wind and snow blocking wall, the wind permeability of the wind and snow blocking wall is set according to the arrangement distance of the steel pipe upright posts, the vertical arrangement width of the corrugated steel plate veneers and the transverse arrangement length of the veneers; the upper and lower widths of the middle energy dissipation gap 4 are 100 mm; the upper and lower widths of the bottom energy dissipation gap 5 are 200 mm; the diameter of the energy dissipation ventilating holes 7 is 30mm, and the transverse distance between the energy dissipation ventilating holes 7 is 400 mm.
In one embodiment of the invention, in order to reduce certain wind resistance load of the wind and snow blocking wall and increase the wind resistance stability of the wind and snow blocking wall, the wind permeability of the wind and snow blocking wall is set according to the arrangement distance of the steel pipe upright posts, the vertical arrangement width of the corrugated steel plate veneers and the transverse arrangement length of the veneers; the upper and lower widths of the middle energy dissipation gap 4 are 100 mm; the upper and lower widths of the bottom energy dissipation gap 5 are 200 mm; the diameter of the energy dissipation ventilating holes 7 is 50mm, the transverse distance of the energy dissipation ventilating holes 7 is 400mm, and the vertical distance is every other wave crest or wave trough.
In a specific embodiment of the invention, because adverse factors such as uneven settlement, frost heaving deformation and other changes of permafrost geology exist in high altitude areas of plateaus, in order to avoid adverse effects which may generate large-area deformation or damage and other conditions on the wind-blocking snow-blocking wall to the greatest extent; the length of each subsection body of the wind-blocking snow-blocking wall is 23.25m, the total height is 2.85m (including energy dissipation and wind permeability clearance), the width of an overlapped gap at the end part between the subsection bodies is 60cm, and the overlapped length is 80 cm.
In a specific embodiment of the invention, because adverse factors such as uneven settlement, frost heaving deformation and other changes of permafrost geology exist in high altitude areas of plateaus, in order to avoid adverse effects which may generate large-area deformation or damage and other conditions on the wind-blocking snow-blocking wall to the greatest extent; the length of each subsection body of the wind-blocking snow-blocking wall is 23.25m, the total height is 2.9m (including energy dissipation and wind permeability gaps), the width of the overlapped gap at the end part between the subsection bodies is 60cm, and the overlapped length is 80 cm.
In a particular embodiment of the present invention,
the manufacturing and mounting process of the corrugated steel wind-resistant snow-retaining wall structure comprises the following steps:
(1) manufacturing a corrugated steel plate: selecting and blanking corrugated steel plates; adopting a full-automatic wave press to press waves; punching bolt holes and energy dissipation ventilation holes by using an automatic punching machine; shaping a corrugated steel plate; surface treatment of corrugated steel plate pieces;
(2) the corrugated steel plate, the upright post 1, the arc cover type post cap 6 and the connecting bolt are subjected to hot-dip galvanizing corrosion prevention treatment;
(3) spraying green anticorrosive paint on one side of the corrugated steel plate;
(4) and at the position which is 15m away from the plane of the edge of the road shoulder, measuring and lofting the road according to the length of the segmented bodies of the wind-blocking snow-blocking wall, the overlapping and overlapping relation among the segmented bodies and the main wind and snow flow direction, marking the measuring points with white grey, wherein the distance between the measuring points is 4.0m, and checking and rechecking.
(5) And (3) inserting the upright post 1 according to the position of the measuring point by using a small-sized pile driver, and marking the scale mark of the buried depth dimension in the length range of 2m at the lower end of the steel pipe upright post before piling. When the problems of column deflection and the like are found in the piling process, the inserting and beating are immediately stopped, and the inserting and beating are carried out after the correction until the buried depth is 1.5 m;
(6) after inserting and hitting all the stand columns 1 of one subsection of the wind-blocking snow-blocking wall, dividing the corrugated steel plates into two rows and reserving energy dissipation gaps, and installing the transverse corrugations on the stand columns 1 to form an upper top plate 2 and a lower bottom plate 3; during installation, the upright column 1 is positioned on the roadbed direction side, the corrugated steel plate is positioned on the windward side direction side, and the side, which is sprayed with the green anticorrosive paint, of the single side of the corrugated steel plate is installed towards the roadbed side direction.
(7) The corrugated steel plate is clamped on the upright post 1 by adopting a U-shaped bolt and penetrates through double bolt holes of the corrugated steel plate to be connected by wearing a steel gasket and screwing a nut, or is connected by a bolt according to a reserved bolt hole on the upright post; the corrugated steel plates are connected through reserved bolt holes by using bolts; after the installation is finished, whether all the bolts are in leakage connection or not is checked; correcting a torque wrench used for screwing the connecting bolt before use, and checking the torque of the bolt after screwing;
(8) after the wind-blocking snow-blocking wall is installed, the corrugated steel plate is sprayed with an anticorrosive paint surface for inspection; when the damage such as abrasion, scraping and the like is found, the repairing spraying is carried out on site; before spraying, the surface to be sprayed is cleaned and then is subjected to paint supplementing; the spray coating is uniform and complete, consistent in color, flat and smooth in surface, free of missing coating, peeling, stripping, bubbling, dripping tumors or agglomeration, cracks and the like, and is not subjected to anticorrosive coating construction when meeting construction environments which do not meet the performance requirements of anticorrosive spray coating materials, such as rain, snow, fog, wind, sand, flying dust, low air temperature and the like.
In a particular embodiment of the present invention,
the manufacturing and mounting process of the corrugated steel wind-resistant snow-retaining wall structure comprises the following steps:
(1) manufacturing a corrugated steel plate: selecting and blanking corrugated steel plates; adopting a full-automatic wave press to press waves; punching bolt holes and energy dissipation ventilation holes by using an automatic punching machine; shaping a corrugated steel plate; surface treatment of corrugated steel plate pieces;
(2) the corrugated steel plate, the upright post 1, the arc cover type post cap 6 and the connecting bolt are subjected to hot-dip galvanizing corrosion prevention treatment;
(3) spraying green anticorrosive paint on one side of the corrugated steel plate;
(4) and at the position which is 25m away from the plane of the edge of the road shoulder, measuring and lofting the road according to the length of the segmented bodies of the wind-blocking snow-blocking wall, the overlapping and overlapping relation among the segmented bodies and the main wind and snow flow direction, marking the measuring points with white grey, wherein the distance between the measuring points is 3.9m, and checking and rechecking.
(5) And (3) inserting the upright post 1 according to the position of the measuring point by using a small-sized pile driver, and marking the scale mark of the buried depth dimension in the length range of 2m at the lower end of the steel pipe upright post before piling. When the problems of column deflection and the like are found in the piling process, the inserting and beating are immediately stopped, and the inserting and beating are carried out after the correction until the buried depth is 1.6 m;
(6) after inserting and hitting all the stand columns 1 of one subsection of the wind-blocking snow-blocking wall, dividing the corrugated steel plates into two rows and reserving energy dissipation gaps, and installing the transverse corrugations on the stand columns 1 to form an upper top plate 2 and a lower bottom plate 3; during installation, the upright column 1 is positioned on the roadbed direction side, the corrugated steel plate is positioned on the windward side direction side, and the side, which is sprayed with the green anticorrosive paint, of the single side of the corrugated steel plate is installed towards the roadbed side direction.
(7) The corrugated steel plate is clamped on the upright post 1 by adopting a U-shaped bolt and penetrates through double bolt holes of the corrugated steel plate to be connected by wearing a steel gasket and screwing a nut, or is connected by a bolt according to a reserved bolt hole on the upright post; the corrugated steel plates are connected through reserved bolt holes by using bolts; after the installation is finished, whether all the bolts are in leakage connection or not is checked; correcting a torque wrench used for screwing the connecting bolt before use, and checking the torque of the bolt after screwing;
(8) after the wind-blocking snow-blocking wall is installed, the corrugated steel plate is sprayed with an anticorrosive paint surface for inspection; when the damage such as abrasion, scraping and the like is found, the repairing spraying is carried out on site; before spraying, the surface to be sprayed is cleaned and then is subjected to paint supplementing; the spray coating is uniform and complete, consistent in color, flat and smooth in surface, free of missing coating, peeling, stripping, bubbling, dripping tumors or agglomeration, cracks and the like, and is not subjected to anticorrosive coating construction when meeting construction environments which do not meet the performance requirements of anticorrosive spray coating materials, such as rain, snow, fog, wind, sand, flying dust, low air temperature and the like.
In one embodiment of the invention, the average thickness of the corrosion-resistant zinc plating layer of the corrugated steel plate, the upright post 1 and the arc cover type cap 6 in the step (2) is 600g/m2Or the average thickness of the zinc coating is 84 μm, and the minimum thickness is 62 μm;
average anticorrosive zinc coating of connecting boltThe thickness is 350g/m2Or the average thickness of the zinc coating is 50 μm, and the minimum thickness is 36 μm;
in one embodiment of the invention, the average thickness of the corrosion-resistant zinc plating layer of the corrugated steel plate, the upright post 1 and the arc cover type cap 6 in the step (2) is 650g/m2Or the average thickness of the zinc coating is 85 μm, and the minimum thickness is 62 μm;
the average thickness of the anticorrosive zinc coating of the connecting bolt is 360g/m2Or the average thickness of the zinc coating is 55 μm, and the minimum thickness is 36 μm;
in one embodiment of the invention: and (3) spraying a green anticorrosive paint on one side of the corrugated steel plate in the step (3), wherein the total dry film thickness is 210 mu m, and the color is light green.
In one embodiment of the invention, the corrugated steel plate in the step (3) is sprayed with the green anticorrosive paint on one side, the total dry film thickness is 220 μm, and the color is light green.
In an embodiment of the present invention, the position of the measurement point in step (4) is determined according to the following conditions:
the distance between the measuring point and the edge plane of the road shoulder is adjusted and determined within the range of 15 m-25 m according to the viewing path and the main wind and snow flow direction angle;
the length of the segmental body of the wind-blocking snow-blocking wall is 23.25m, and the total height is 2.85 m;
the included angle between the wind-blocking snow-blocking wall subsection body and the main wind and snow flow direction angle is 60 degrees;
the overlapping gap width of the end parts between the segmented bodies of the wind-blocking snow-blocking wall is 60cm, and the overlapping length is 80 cm.
In an embodiment of the present invention, the position of the measurement point in step (4) is determined according to the following conditions:
the distance between the measuring point and the edge plane of the road shoulder is adjusted and determined within the range of 15 m-25 m according to the viewing path and the main wind and snow flow direction angle;
the length of the segmental body of the wind-blocking snow-blocking wall is 23.25m, and the total height is 2.9 m;
the included angle between the wind-blocking snow-blocking wall subsection body and the main wind and snow flow direction angle is 75 degrees;
the overlapping gap width of the end parts between the segmented bodies of the wind-blocking snow-blocking wall is 60cm, and the overlapping length is 80 cm.
In one embodiment of the invention, the control torque of each nut in the screwing process by the torque wrench in the step (6) is 160n.m, and the relative torque error is +/-5%; the torque wrench adopted for the bolt torque inspection has a torque relative error of +/-3%.
In a specific embodiment of the invention, when the nut is screwed by the torque wrench in the step (6), the control torque of each nut is 200n.m, and the relative torque error is ± 4%; the torque wrench adopted for the bolt torque inspection has a torque relative error of +/-2%.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention by equivalent replacement or change according to the technical solution and the modified concept of the present invention within the technical scope of the present invention.
Claims (9)
1. The utility model provides a corrugated steel wind-resistant snow-guard wall structure comprises a plurality of segmentation bodies, characterized in that: the end parts of the segmented bodies are overlapped, separated and overlapped; each subsection body comprises an upright post, an upper top plate, a lower bottom plate and an arc cover type cap; the plurality of upright posts are vertically arranged at equal intervals, and arc cover type cap posts are arranged at the tops of the upright posts; the upper top plate and the lower bottom plate are formed by mutually connecting the end parts of a plurality of transversely arranged corrugated steel plates through bolts; two ends of each corrugated steel plate are connected with the upright post through bolts; the upper top plate and the lower bottom plate are installed at intervals to form a middle energy dissipation gap; the lower bottom plate is arranged off the ground, and a bottom energy dissipation gap is formed between the lower edge of the lower bottom plate and the ground; a plurality of energy dissipation ventilation holes are formed in the corrugated steel plate at intervals of one corrugation.
2. A corrugated steel wind-and snow-blocking wall structure according to claim 1, wherein: the corrugated steel plate adopts the wave pitch of 200mm, the wave height of 55mm, the plate thickness of 4mm, the length of a single plate piece of 4000mm and the width of 1280 mm; the upright post is a steel pipe with the diameter of 140mm and the wall thickness of 4.5mm, and the arc cover type cap is matched with the upright post; m16 bolts of 8.8S are adopted for connection between the corrugated steel plates, and U-shaped bolts with the diameter of 16mm are adopted for connection between the corrugated steel plates and the steel upright posts.
3. A corrugated steel wind-and snow-blocking wall structure according to claim 2, wherein: the upper and lower widths of the middle energy dissipation gap are 100 mm; the upper and lower width of the bottom energy dissipation gap is 200 mm; the diameter of the energy dissipation ventilating holes is more than or equal to 30mm, the transverse distance between the energy dissipation ventilating holes is 400mm, and the vertical distance is every other wave crest or wave trough.
4. A corrugated steel wind-and snow-blocking wall structure according to claim 1, wherein: the length of each subsection body of the wind-resistant snow-blocking wall is 23.25m, and the total height is more than or equal to 2.85 m; the overlapping gap width of the end parts between the subsection bodies is 60cm, and the overlapping length is 80 cm.
5. A process for manufacturing and installing a corrugated steel wind-and snow-blocking wall structure according to any one of claims 1 to 3, wherein: the method comprises the following steps:
(1) manufacturing a corrugated steel plate: selecting and blanking corrugated steel plates; adopting a full-automatic wave press to press waves; punching bolt holes and energy dissipation ventilation holes by using an automatic punching machine; shaping and surface treatment of the corrugated steel plate;
(2) hot-dip galvanizing antiseptic treatment is carried out on the corrugated steel plate, the upright post, the arc cover type post cap and the connecting bolt;
(3) spraying green anticorrosive paint on one side of the corrugated steel plate;
(4) measuring and lofting and measuring points with white gray marks at positions 15-25 m away from the plane of the edge of the road shoulder according to the lengths of the segmented bodies of the wind-blocking snow-blocking wall, the overlapping and overlapping relation among the segmented bodies and the main wind and snow flow direction, wherein the distance between the measuring points is not more than 4m, and checking and rechecking;
(5) inserting and striking the upright post according to the position of the measuring point by using a small-sized pile driver, and marking a buried depth scale mark in the length range of 2m at the lower end of the upright post before piling; when the problems of column deflection and the like are found in the piling process, the inserting and beating are immediately stopped, and the inserting and beating are carried out after the correction until the buried depth is not less than 1.5 m;
(6) after inserting and hitting all stand columns of a subsection body of the wind-blocking snow-blocking wall, dividing corrugated steel plates into two rows and reserving energy dissipation gaps, and installing transverse corrugations on the stand columns to form an upper top plate and a lower bottom plate; when the corrugated steel plate is installed, the upright posts are positioned on the side of the roadbed, the corrugated steel plate is positioned on the side of the windward side, and the side, which is sprayed with the green anticorrosive paint, of the single side of the corrugated steel plate is installed in the direction facing the side of the roadbed;
(7) the corrugated steel plate is clamped on the upright post by adopting a U-shaped bolt and penetrates through double bolt holes of the corrugated steel plate to be connected by wearing a steel gasket and screwing a nut, or is connected by a bolt according to a reserved bolt hole on the upright post; the corrugated steel plates are connected through reserved bolt holes by using bolts; after the installation is finished, whether all the bolts are in leakage connection or not is checked; correcting a torque wrench used for screwing the connecting bolt before use, and checking the torque of the bolt after screwing;
(8) after the wind-blocking snow-blocking wall is installed, the corrugated steel plate is sprayed with an anticorrosive paint surface for inspection; when the damage such as abrasion, scraping and the like is found, the repairing spraying is carried out on site; before spraying, the surface to be sprayed is cleaned and then is subjected to paint supplementing; the spray coating is uniform and complete, consistent in color, flat and smooth in surface, free of missing coating, peeling, stripping, bubbling, dripping tumors or agglomeration, cracks and the like, and is not subjected to anticorrosive coating construction when meeting construction environments which do not meet the performance requirements of anticorrosive spray coating materials, such as rain, snow, fog, wind, sand, flying dust, low air temperature and the like.
6. The manufacturing and installation process of a corrugated steel wind-and snow-blocking wall structure according to claim 5, wherein: the average thickness of the anticorrosive zinc coating of the corrugated steel plate, the upright post and the arc cover type cap of the step (2) is more than or equal to 600g/m2 or the average thickness of the zinc coating is more than or equal to 84 mu m, and the minimum thickness is 62 mu m; the average thickness of the anti-corrosion zinc coating of the connecting bolt is more than or equal to 350g/m2 or the average thickness of the zinc coating is more than or equal to 50 mu m and the minimum thickness is 36 mu m.
7. The manufacturing and installation process of a corrugated steel wind-and snow-blocking wall structure according to claim 5, wherein: and (3) spraying a green anticorrosive paint on one side of the corrugated steel plate in the step (3), wherein the total dry film thickness is not less than 210 mu m, and the color is light green.
8. The manufacturing and installation process of a corrugated steel wind-and snow-blocking wall structure according to claim 5, wherein: the position of the measuring point in the step (4) is determined according to the following conditions:
the distance between the measuring point and the edge plane of the road shoulder is adjusted and determined within the range of 15 m-25 m according to the viewing path and the main wind and snow flow direction angle;
the length of the segmented body of the wind-resistant snow-blocking wall is 23.25m, and the total height is more than or equal to 2.85 m;
the included angle between the section body of the wind-blocking snow-blocking wall and the flow direction angle of the main wind and snow is 60-75 degrees;
the overlapping gap width of the end parts between the segmented bodies of the wind-blocking snow-blocking wall is 60cm, and the overlapping length is 80 cm.
9. The manufacturing and installation process of a corrugated steel wind-and snow-blocking wall structure according to claim 5, wherein: in the step (6), when the nut is screwed by a torque wrench, the torque of each nut is controlled to be 160 N.m-200 N.m, and the relative error of the torque is not more than +/-5%; the torque wrench adopted for the bolt torque inspection has a torque relative error not greater than +/-3%.
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Application publication date: 20200918 |