CN109972518B - Construction method of hanging plate type guardrail base - Google Patents
Construction method of hanging plate type guardrail base Download PDFInfo
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- CN109972518B CN109972518B CN201910168539.0A CN201910168539A CN109972518B CN 109972518 B CN109972518 B CN 109972518B CN 201910168539 A CN201910168539 A CN 201910168539A CN 109972518 B CN109972518 B CN 109972518B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention relates to a construction method of a hanging plate type guardrail base, which comprises the following steps: 1) construction preparation; 2) treating the surface of the box girder; 3) cleaning the surface of the box girder; 4) mounting and positioning the hanging plate; 5) arranging base side molds; 6) pouring concrete on the base; 7) and positioning and arranging guardrail posts. The invention has the beneficial effects that: the invention not only can reduce the influence of the cleaning of the upper surface of the box girder on the external environment, but also can synchronously realize the recycling of sewage, control the cleaning range and save the consumption of water resources; the hanging plate is convenient to position and install on site, has good structural integrity, can save the using amount of temporary supports for hanging plate construction, realizes the reutilization of an installation system, and saves building materials; the base side die has high installation and positioning precision and can synchronously meet the positioning requirement of the built-in magic box; the side form support has good stability and convenient movement, and can effectively reduce the difficulty of site operation positioning.
Description
Technical Field
The invention relates to a construction method of a hanging plate type guardrail base, which can improve the field construction quality and the integrity of a construction structure, reduce the environmental protection difficulty and improve the field construction efficiency, belongs to the field of bridge engineering and is suitable for hanging plate type guardrail base construction engineering.
Background
With the increasing investment and attention in highway construction in China, more and more bridge projects are built, and new challenges are brought to the construction of the bridge projects. Due to the limitation of various factors, the problems of low construction efficiency, poor structural integrity and the like of the guardrail in practical application in the construction of the concrete bridge guardrail seriously affect the construction quality and the driving safety of the bridge, so that the construction scheme and the construction effect of the bridge guardrail are further optimized.
There has been a municipal bridge guardrail among the prior art, including lower base and upper base, be equipped with protective assembly on the upper base, upper base and lower pedestal junction are equipped with and dredge the opening, be equipped with the plug connector of motion in vertical direction on the upper base, just be equipped with the jack to the position of plug connector on the lower base, still include the control assembly of control plug connector up-and-down motion. This guardrail structure is comparatively simple and convenient, improves the installation effectiveness of guardrail to a certain extent, but the integrality of being connected of guardrail structure and bridge remains to promote.
In view of this, the invention is urgently needed to provide a construction method of a hanging plate type guardrail base, which can improve the field construction quality and the integrity of a construction structure, reduce the difficulty of installing guardrail columns and improve the field construction efficiency.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the construction method of the hanging plate type guardrail base, which can improve the field construction quality and the integrity of a construction structure, reduce the environmental protection difficulty and improve the field construction efficiency.
The construction method of the hanging plate type guardrail base comprises the following steps:
1) construction preparation: preparing a hanging plate, a cantilever hanging frame, a water collecting tank, a hanging positioning body, a base side mold, a guardrail column and a built-in magic box, and determining the mix proportion of concrete and the coordinates of the guardrail column;
2) and (3) surface treatment of the box girder: correcting the positions of a positioning batten and a connecting anchor bar preset in the box girder, and roughening the upper surface of the box girder;
3) cleaning the surface of the box girder: the box girder is provided with an overhanging hanging frame, and a pressure device, a water pipe connector, an inner water baffle and an outer water baffle are arranged on a hanging frame crossbeam; connecting the water pipe connector with a water spray pipe, and arranging a washing nozzle on the water spray pipe; the inner side wall of the water collecting tank is provided with a positioning inner support and a filter plate support body, and a filter plate is arranged on the filter plate support body opposite to the mirror image; the hanger suspender is connected with the positioning inner support, and a suspender lantern ring is arranged outside the hanger suspender; the anchor bar lantern ring is arranged on the connecting anchor bar, the lantern ring connecting rod is arranged between the suspender lantern ring and the anchor bar lantern ring, and the transverse position of the water collecting tank is adjusted through the lantern ring positioning bolt on the lantern ring connecting rod; a water pumping pipeline is arranged between the water collecting tank and the pressurizing device, and a joint sealing body is arranged at the joint of the water collecting tank and the tank beam; end support bottom plates, end support pillars and end support diagonal rods are arranged on the upper surfaces of the box girders at two ends of the water spraying area, and the end water baffles are connected with the end support pillars in a sticking manner; scouring the upper surface of the box girder by a scouring spray head;
4) and (3) mounting and positioning a hanging plate: a suspension positioning body is arranged at the top of the box girder; the lower surface of the cantilever beam is provided with a sliding channel and a beam bottom supporting plate, and a sliding baffle is arranged in the sliding channel; an elastic support body is arranged between the beam bottom supporting plate and the sliding baffle; the hanging plate is provided with a connecting transverse rib, the upper part of the connecting anchor rib is provided with a U-shaped connecting rib, and the U-shaped connecting rib and the connecting transverse rib are connected with the connecting transverse plate through fastening bolts;
5) and (3) laying base side molds: the box girder is provided with a side mould bracket and a base side mould, the bottom end of the base side mould is provided with a side mould bottom support, and the outer side of the base side mould is provided with a mould side sliding groove facing the side of the side mould bracket; a bracket hoisting weight is arranged on the sliding support rod; the upper parts of the base side mold and the hanging plate are provided with a limiting ejector rod, and an ejector rod positioning bolt, a side mold limiting groove and a hanging plate limiting groove are arranged on the limiting ejector rod; the side die limiting groove and the hanging plate limiting groove are respectively connected with the base side die and the hanging plate; a box side pressure plate and a connecting lug plate are arranged on the outer side wall of the built-in magic box, and a magic box adjusting rod is arranged between the box side pressure plate and the limiting ejector rod, so that the connecting lug plate is connected with the connected base steel bar;
6) pouring concrete on the base: checking the spatial positions of the hanging plate, the built-in magic box and the base side mold, and performing concrete pouring and curing to form a cast-in-place base after the connection strength of the base steel bars and the connection lug plates meets the requirements;
7) positioning and arranging guardrail columns: after the cast-in-place base concrete forms strength, a cylinder bottom leveling layer is laid at the bottom of the built-in magic box, and then the cylinder bottom connecting plate, the connecting sleeve and the column bottom connecting section are placed on the cylinder bottom leveling layer; an inter-column connecting ring is arranged at the top end of the column bottom connecting section, an upright column positioning bracket is arranged on the upper surface of the box girder, and the positioning hoop is connected with the replaceable guardrail column through a hoop bolt; after the bottom end of the replaceable guardrail column is firmly connected with the connecting ring between the columns, the horizontal positions of the column bottom connecting section and the replaceable guardrail column are corrected synchronously through the ring side correcting rod and the positioning cross rod; the construction of grouting in the barrel is firstly carried out, and then the column base protection body is arranged.
Preferably, the method comprises the following steps: step 3) the overhanging hanging frame consists of a hanging frame bottom plate, a hanging frame upright post, a hanging frame cross beam and a hanging frame hanging rod, wherein a hanging frame sliding groove connected with the hanging frame upright post is arranged on the hanging frame bottom plate; the inner water baffle, the outer water baffle and the end water baffle adopt rubber sheets or geomembranes, and plate bottom closing bodies are arranged at the bottoms of the inner water baffle and the end water baffle; the outer water baffle is connected with the hanger suspender in a sticking way; the cross section of the filter residue plate is arc-shaped, and the filter residue plate is provided with water filtering holes.
Preferably, the method comprises the following steps: step 4) the suspension positioning body consists of an upright post bottom plate, a support upright post, a cantilever beam, an outer hanging rod and a rod bottom supporting plate; the vertical adjusting bolts are arranged on the supporting upright posts, the transverse adjusting bolts are arranged on the overhanging cross beams, the elastic supporting bodies and the bottom bearing plates are arranged on the rod bottom supporting plates, and the transverse supporting rods and the elastic closing bodies are arranged on the outer hanging rods facing to the hanging plates.
Preferably, the method comprises the following steps: and 5) the side die support consists of a support bottom plate, a support sliding groove, a support vertical rod, a support cross rod and a sliding support rod, and the sliding support rod and the support cross rod are vertically connected with the support vertical rod.
Preferably, the method comprises the following steps: step 7), arranging a cylinder outer connecting rib on the outer side wall of the connecting sleeve, arranging an elastic connecting rib on the inner side wall of the connecting sleeve, and arranging a cylinder inner connecting bolt at the bottom end of the connecting sleeve; the connecting sleeve is welded with the cylinder outer connecting rib and the elastic connecting rib, and the connecting sleeve is connected with the cylinder inner connecting bolt in a sticking way; the elastic connecting ribs adopt rigid elastic sheets; the inner side wall of the inter-column connecting ring is provided with connecting threads, 3-4 ring side correcting rods are arranged on the outer side of the inter-column connecting ring along the circumferential direction, and a cylinder wall pressure bearing plate is arranged between the ring side correcting rods and the built-in magic box; the upright post positioning support consists of a post bottom bearing plate, a positioning upright post, a positioning cross rod, a positioning hoop and a plate top pressing weight, and a cross rod bolt is arranged on the positioning cross rod; the column foot protection body is right-angled trapezoid in cross section, is made of a rubber plate or a plastic plate or a steel plate or an alloy plate, and is connected with the replaceable guardrail column in a sticking mode or in a welding mode.
Preferably, the method comprises the following steps: the guardrail column in the step 1) comprises a column bottom connecting section and a replaceable guardrail column.
The invention has the beneficial effects that:
(1) the invention can not only reduce the influence of the cleaning of the upper surface of the box girder on the external environment, but also synchronously realize the recycling of sewage, control the cleaning range and save the consumption of water resources.
(2) The hanging plate is convenient to position and install on site, has good structural integrity, can save the using amount of temporary supports in hanging plate construction, realizes the recycling of an installation system, and saves building materials.
(3) The base side die has high installation and positioning precision and can synchronously meet the positioning requirement of the built-in magic box; the side form support has good stability and convenient movement, and can effectively reduce the difficulty of site operation positioning.
(4) The guardrail column structure has good integrity and convenient replacement, can realize accurate positioning of the guardrail in the longitudinal direction and the transverse direction, and improves the construction quality.
Drawings
FIG. 1 is a construction flow chart of a hanging plate type guardrail base of the invention;
FIG. 2 is a schematic view of a box girder surface treatment structure;
FIG. 3 is a schematic view of the arrangement of the end water deflector of FIG. 2;
FIG. 4 is a schematic view of the hanging plate mounting structure;
FIG. 5 is a cross-sectional view of the glide channel of FIG. 4;
FIG. 6 is a schematic view of a construction structure of a cast-in-place base;
figure 7 is a schematic view of an alternative fence post layout configuration.
Description of reference numerals: 1-hanging a plate; 2, hanging a cantilever rack; 3, a water collecting tank; 4-hanging a positioning body; 5-base side mould; 6-guardrail posts; 7-built-in magic box; 8-box girder; 9-positioning the lath; 10-connecting anchor bars; 11-a pylon beam; 12-a pressurizing device; 13-a water pipe connector; 14-inner water baffle; 15-outer water baffle; 16-a water spray pipe; 17-flushing the spray head; 18-positioning an inner support; 19-a filter plate support; 20-a filter residue plate; 21-a pylon boom; 22-a boom collar; 23-a tendon lantern ring; 24-a collar link; 25-collar locating pegs; 26-water pumping pipeline; 27-seam closures; 28-end support bottom plate; 29-end support struts; 30-end stay diagonal; 31-cantilever beam; 32-a glide channel; 33-beam bottom bracing plate; 34-a slide baffle; 35-an elastic support; 36-connecting transverse ribs; 37-U-shaped connecting ribs; 38-connecting the transverse plates; 39-fastening bolts; 40-side form holder; 41-side die bottom support; 42-mold side runner; 43-a slipping brace; 44-hoisting the bracket; 45-limiting ejector rods; 46-ejector pin positioning bolt; 47-side die limiting groove; 48-hanging plate limit groove; 49-a cartridge-side platen; 50-connecting ear plates; 51-magic box adjusting rod; 52-base steel bars; 53-cylinder bottom leveling layer; 54-cylinder bottom connecting plate; 55-a connecting sleeve; 56-column bottom connecting section; 57-intercolumnar connecting rings; 58-column positioning support; 59-positioning the ferrule; 60- -replaceable guardrail posts; 61-ring side alignment rods; 62-positioning cross bars; 63-injecting slurry into the cylinder; 64-column base protection body; 65-a hanger base plate; 66-hanger posts; 67-hanger runner; 68-water filtration holes; 69-end water baffle; 70-plate bottom obturation body; 71-column bottom plate; 72-supporting columns; 73-hanging rods outside; 74-a pole bottom gusset; 75-vertical adjusting bolts; 76-transverse adjusting bolt; 77-cross bar bolt; 78-bottom bearing plate; 79-transverse strut; 80-elastic obturator; 81-a rack floor; 82-a bracket chute; 83-bracket upright stanchion; 84-a rack rail; 85-plate top weight; 86-external connecting ribs; 87-elastic connecting ribs; 88-connecting bolts in the cylinder; 89-positioning the upright post; 90-cylinder wall bearing plate; 91-column bottom bearing plate; 92-a cast-in-place base; 93-ferrule bolt.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. 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 those improvements and modifications also fall within the scope of the claims of the present invention.
Referring to fig. 1, the construction method of the hanging plate type guardrail base comprises the following construction steps:
1) construction preparation: according to the construction requirements, a hanging plate 1, a cantilever hanging frame 2, a water collecting tank 3, a hanging positioning body 4, a base side mold 5, a guardrail column 6 and a built-in magic box 7 are prepared, and the mix proportion of concrete and the coordinates of the guardrail column 6 are determined;
2) surface treatment of the box girder 8: correcting the positions of a positioning slat 9 and a connecting anchor bar 10 preset in the box girder 8, and roughening the upper surface of the box girder 8;
3) cleaning the surface of the box girder 8: the box girder 8 is provided with an overhanging hanger 2, and the hanger beam 11 is provided with a pressure device 12, a water pipe connector 13, an inner water baffle 14 and an outer water baffle 15; connecting the water pipe connector 13 with a spray pipe 16, and arranging a washing nozzle 17 on the spray pipe 16; a positioning inner support 18 and a filter plate support body 19 are arranged on the inner side wall of the water collecting tank 3, and a filter plate 20 is arranged on the filter plate support body 19 opposite to the mirror image; the hanger suspender 21 is connected with the positioning inner support 18, and a suspender lantern ring 22 is arranged outside the hanger suspender 21; the anchor bar lantern ring 23 is arranged on the connecting anchor bar 10, the lantern ring connecting rod 24 is arranged between the suspender lantern ring 22 and the anchor bar lantern ring 23, and the transverse position of the water collecting tank 3 is adjusted through the lantern ring positioning bolt 25 on the lantern ring connecting rod 24; a water pumping pipeline 26 is arranged between the water collecting tank 3 and the pressurizing device 12, and a joint sealing body 27 is arranged at the joint of the water collecting tank 3 and the tank beam 8; the upper surfaces of the box girders 8 at the two ends of the water spraying area are provided with end support bottom plates 28, end support pillars 29 and end support diagonal rods 30, and the end water baffles 69 are connected with the end support pillars 29 in a sticking way; the upper surface of the box girder 8 is scoured through a scouring spray head 17;
4) the hanging plate 1 is installed and positioned: the top of the box girder 8 is provided with a suspension positioning body 4; a sliding channel 32 and a beam bottom supporting plate 33 are arranged on the lower surface of the cantilever beam 31, and a sliding baffle 34 is arranged in the sliding channel 32; an elastic support body 35 is arranged between the beam bottom support plate 33 and the sliding baffle 34; the hanging plate 1 is provided with a connecting transverse rib 36, the upper part of the connecting anchor rib 10 is provided with a U-shaped connecting rib 37, and the U-shaped connecting rib 37 and the connecting transverse rib 36 are both connected with a connecting transverse plate 38 through a fastening bolt 39;
5) the base side die 5 is arranged: the box girder 8 is provided with a side die bracket 40 and a base side die 5, the bottom end of the base side die 5 is provided with a side die bottom support 41, and the outer side of the base side die 5 facing the side of the side die bracket 40 is provided with a die side chute 42; a bracket hoisting weight 44 is arranged on the sliding support rod 43; a limiting ejector rod 45 is arranged at the upper parts of the base side mold 5 and the hanging plate 1, and an ejector rod positioning bolt 46, a side mold limiting groove 47 and a hanging plate limiting groove 48 are arranged on the limiting ejector rod 45; the side die limiting groove 47 and the hanging plate limiting groove 48 are respectively connected with the base side die 5 and the hanging plate 1; a box side pressure plate 49 and a connecting lug plate 50 are arranged on the outer side wall of the built-in magic box 7, and a magic box adjusting rod 51 is arranged between the box side pressure plate 49 and the limiting ejector rod 45, so that the connecting lug plate 50 is connected with a connected base steel bar 52;
6) pouring concrete on the base: checking the spatial positions of the hanging plate 1, the built-in magic box 7 and the base side mold 5, and performing concrete pouring and curing to form a cast-in-place base 92 after the connection strength of the base steel bars 52 and the connecting ear plates 50 meets the requirements;
7) positioning and arranging guardrail columns: after the cast-in-place base 92 concrete forms strength, a cylinder bottom leveling layer 53 is laid at the bottom of the built-in magic box 7, and then the cylinder bottom connecting plate 54, the connecting sleeve 55 and the column bottom connecting section 56 are placed on the cylinder bottom leveling layer 53; an inter-column connecting ring 57 is arranged at the top end of the column bottom connecting section 56, a column positioning bracket 58 is arranged on the upper surface of the box girder 8, and a positioning hoop 59 is connected with the replaceable guardrail column 60 through a hoop bolt 93; after the bottom end of the replaceable guardrail column 60 is firmly connected with the inter-column connecting ring 57, the horizontal positions of the column bottom connecting section 56 and the replaceable guardrail column 60 are corrected synchronously through the ring side correcting rod 61 and the positioning cross rod 62; the construction of the grout injection 63 in the barrel is performed first, and then the toe guard 64 is provided.
Referring to fig. 2-7, in the hanging plate type guardrail base, the box girder 8 is provided with the cantilever hanging frame 2, the outer side of the cleaning area is provided with the inner water baffle 14, the outer water baffle 15 and the end water baffle 69, and the inner side wall of the water collecting tank 3 is provided with the filter residue plate 20; the top of the box girder 8 is provided with a suspension positioning body 4, and an elastic supporting body 35 is arranged between the girder bottom supporting plate 33 and the sliding baffle 34, so that the U-shaped connecting rib 37 and the connecting transverse rib 36 are connected with the connecting transverse plate 38 through a fastening bolt 39; the side die support 40 and the base side die 5 are arranged on the box girder 8, so that the side die limiting groove 47 and the hanging plate limiting groove 48 are respectively connected with the base side die 5 and the hanging plate 1; the outer side wall of the built-in magic box 7 is provided with a box side pressing plate 49 and a connecting lug plate 50; the cylinder bottom connecting plate 54, the connecting sleeve 55, the column bottom connecting section 56 and the replaceable guardrail column 60 are arranged on the cylinder bottom leveling layer 53 at the bottom of the built-in magic box 7, and the column foot protecting body 64 is arranged on the outer side of the replaceable guardrail column 60.
The hanging plate 1 is prefabricated by concrete materials, and the strength grade of the concrete is C35.
The suspension rack 2 consists of a rack bottom plate 65, a rack upright post 66, a rack cross beam 11 and a rack suspension rod 21, wherein the rack bottom plate 65 is made of a steel plate with the thickness of 2mm, the plane size is 2m × 3m, the rack upright post 66 is made of H-shaped steel with the specification of 244 × 175 × 7 × 11, a rack sliding groove 67 is formed in the upper surface of the rack bottom plate 65, the rack sliding groove 67 is formed by rolling the steel plate with the thickness of 2mm, the height is 30cm, the width is 25 cm., the rack cross beam 11 is made of H-shaped steel with the specification of 150 × 150 × 7 × 10, and the rack suspension rod 21 is formed by rolling steel pipes with the diameter of 100mm and the wall thickness of 1 mm.
The water collecting tank 3 is formed by welding steel plates with the thickness of 1mm, the cross section of the water collecting tank is rectangular, the height of the water collecting tank is 0.5m, and the width of the water collecting tank is 0.4 m.
The suspension positioning body 4 is composed of an upright column bottom plate 71, a support upright column 72, an overhanging cross beam 31, an external hanging rod 73 and a rod bottom support plate 74, wherein the upright column bottom plate 71 and the rod bottom support plate 74 are both made of steel plates with the thickness of 2mm, the support upright column 72 is made of H-shaped steel with the specification of 244 × 175 × 7 × 11, the external hanging rod 73 is made of steel pipes with the diameter of 100mm and the wall thickness of 1mm through rolling, and the overhanging cross beam 31 is made of H-shaped steel with the specification of 150 × 150 × 7 × 10.
The base side die 5 adopts an aluminum alloy template with the thickness of 2 mm.
The column bottom connecting section 56 is formed by rolling a steel tube with the diameter of 20cm and the wall thickness of 2 mm; the replaceable fence post 60 is made of a steel plate having a thickness of 1 mm.
The built-in magic box 7 is formed by rolling a steel plate with the thickness of 1mm, and the plane size is 40 × 40 cm.
The box girder 8 is a reinforced concrete structure, the width of the box girder is 24m, and the strength grade of concrete is C50.
The positioning strip plate 9 is formed by rolling a steel plate with the thickness of 2mm, and the height is 15 cm.
The connecting anchor bars 10 are threaded reinforcing bars with the diameter of 32mm and the length of 30 cm.
The pressurizing device 12 adopts an electric pressurizing water pump, and the lift is 30 m.
The water pipe connector 13 adopts a water pipe ball valve.
The inner water baffle 14, the outer water baffle 15 and the end water baffle 69 are all made of rubber sheets with the thickness of 2mm, and the bottoms of the rubber sheets are connected with the plate bottom closing body 70; the plate bottom closing body 70 is formed by cutting a rubber plate with the thickness of 2cm and the width of 5 cm.
The spray pipe 16 and the water pumping pipeline 26 are both made of steel pipes and have the diameter of 30 mm.
The washing nozzle 17 adopts a high-pressure nozzle, and the diameter of a water spraying opening is 2 mm.
The positioning inner support 18 is formed by cutting a steel plate with the thickness of 2mm and the width of 3 cm.
The filter plate support body 19 is formed by rolling a steel plate with the thickness of 1 mm.
The cross section of the filter residue plate 20 is arc-shaped and is made of a steel plate with the thickness of 1 mm.
The suspender lantern ring 22 and the anchor bar lantern ring 23 are respectively made of a steel pipe with the diameter of 120mm and a steel pipe with the diameter of 60mm, and are vertically welded and connected with the lantern ring connecting rod 24. The toggle link 24 is a screw with a diameter of 20 mm. The collar positioning bolt 25 is a bolt with a thread diameter of 20 mm.
The seam closures 27 are cut out of a rubber sheet with a thickness of 1 cm.
The end support base plate 28 is made of a steel plate with a thickness of 2 mm.
The end support strut 29 is made of H-shaped steel with the specification of 244 × 175 × 7 × 11.
The end stay diagonal members 30 are made of steel pipes having a diameter of 60 mm.
The sliding channel 32 is arranged on the lower surface of the cantilever beam 31 and is rolled by a steel plate with the thickness of 2 mm.
The beam bottom supporting plate 33 and the sliding baffle 34 are both made of steel plates with the thickness of 2 mm.
The elastic support 35 is made of a spring material.
The connecting transverse bar 36 and the U-shaped connecting bar 37 are both made of twisted steel bars with the diameter of 25 mm.
The connecting transverse plate 38 is made of a steel plate material with the thickness of 2mm and the width of 10 cm.
The fastening bolt 39 is a stainless steel bolt having a diameter of 22 mm.
The side die support 40 comprises a support bottom plate 81, support sliding grooves 82, support vertical rods 83, support cross rods 84 and sliding support rods 43, wherein the support bottom plate 81 is formed by rolling a steel plate with the thickness of 2mm, the support sliding grooves 82 are made of channel steel with the specification of 16a, the support vertical rods 83 are made of H-shaped steel with the specification of 100 × 50 × 5 × 7, and the support cross rods 84 and the sliding support rods 43 are made of steel pipes with the diameter of 60 mm.
The side mould bottom support 41 is made of steel plate material with the thickness of 1 mm.
The die side sliding grooves 42, the side die limiting grooves 47 and the hanging plate limiting grooves 48 are formed by rolling steel plates with the thickness of 2 mm.
The limiting ejector rod 45 is made of a steel pipe material with the diameter of 60 mm.
The support hoisting weight 44 is made of concrete blocks, and the weight is 0.1 t.
The mandril positioning bolt 46 adopts a bolt with the inner diameter of 60 mm.
The box side pressing plate 49 and the connecting lug plate 50 are both formed by rolling steel plates with the thickness of 2 mm.
The magic box adjusting rod 51 is made of bolts with the diameter of 20 mm.
The base steel bar 52 is a threaded steel bar with a diameter of 25 mm.
Cement mortar is used for the cylinder bottom leveling layer 53.
The cylinder bottom connecting plate 54 is made of a steel plate having a thickness of 2 mm.
The connecting sleeve 55 is rolled from a steel plate having a thickness of 1mm and has a cross-sectional dimension of 30cm × 30 cm.
The inter-column connecting ring 57 is rolled from a steel plate having a thickness of 2mm and a height of 15 cm.
The column positioning bracket 58 is composed of a column bottom bearing plate 91, a positioning column 89, a positioning cross rod 62, a positioning hoop 59 and a plate top pressing weight 85.
The positioning collar 59 is formed by rolling a steel plate with the thickness of 1mm, and the height is 30 cm.
The ring side positioning rod 61 adopts a bolt with the diameter of 22 mm; the positioning cross rods 62 are all screws with the diameter of 30 mm.
The in-barrel grout 63 is a concrete material having a strength grade of C35.
The column foot protection body 64 has a right trapezoid cross section and is made of a rubber plate.
The diameter of the water filtering hole 68 is 0.1 cm.
The vertical adjusting bolt 75, the horizontal adjusting bolt 76 and the cross bar bolt 77 are all bolts with the diameter of 22 mm.
The bottom bearing plate 78 is a steel plate having a thickness of 2mm and a width of 10 cm.
The transverse stay 79 is a steel pipe with a diameter of 30 mm.
The elastic airtight body 80 is a rubber plate with a thickness of 1 cm.
The plate top weight 85 is a concrete block with a weight of 0.1 t.
The external cylinder connecting rib 86 is a threaded steel bar with the diameter of 16 mm.
The elastic connecting ribs 87 are rigid elastic sheets with the thickness of 1 mm.
The cylinder inner connecting bolt 88 is a bolt having an inner diameter of 20 cm.
The positioning column 89 is made of H-shaped steel with the specification of 150 × 150 × 7 × 10.
The cylinder wall bearing plate 90 and the column bottom bearing plate 91 are both made of steel plates with the thickness of 1 mm.
The cast-in-place foundation 92 is of a reinforced concrete structure, and the concrete strength grade is C35.
The ferrule bolt 93 is a bolt having a diameter of 20 mm.
Claims (5)
1. The construction method of the hanging plate type guardrail base is characterized by comprising the following construction steps:
1) construction preparation: preparing a hanging plate (1), a cantilever hanging frame (2), a water collecting tank (3), a hanging positioning body (4), a base side mold (5), a guardrail column (6) and a built-in magic box (7), and determining the mix proportion of concrete and the coordinate of the guardrail column (6);
2) surface treatment of the box girder (8): correcting the positions of a positioning slat (9) and a connecting anchor bar (10) preset in the box girder (8), and performing chiseling treatment on the upper surface of the box girder (8);
3) cleaning the surface of the box girder (8): the box girder (8) is provided with an overhanging hanger (2), the overhanging hanger (2) consists of a hanger bottom plate (65), a hanger upright post (66), a hanger beam (11) and a hanger (21), and a hanger chute (67) connected with the hanger upright post (66) is arranged on the hanger bottom plate (65); a pressurizing device (12), a water pipe connector (13), an inner water baffle (14) and an outer water baffle (15) are arranged on a hanger beam (11); the outer water baffle (15) is connected with the hanger suspender (21) in a sticking way; the water pipe connector (13) is connected with a water spraying pipe (16), and a washing nozzle (17) is arranged on the water spraying pipe (16); a positioning inner support (18) and a filter plate support body (19) are arranged on the inner side wall of the water collecting tank (3), and a filter residue plate (20) is arranged on the filter plate support body (19) which is opposite to the mirror image; the hanger suspender (21) is connected with the positioning inner support (18), and a suspender lantern ring (22) is arranged outside the hanger suspender (21); anchor bar lantern rings (23) are arranged on the connecting anchor bars (10), lantern ring connecting rods (24) are arranged between the suspender lantern ring (22) and the anchor bar lantern rings (23), and the transverse position of the water collecting tank (3) is adjusted through lantern ring positioning bolts (25) on the lantern ring connecting rods (24); a water pumping pipeline (26) is arranged between the water collecting tank (3) and the pressurizing device (12), and a joint sealing body (27) is arranged at the joint of the water collecting tank (3) and the tank beam (8); an end support bottom plate (28), an end support pillar (29) and an end support diagonal rod (30) are arranged on the upper surface of the box girder (8) at two ends of the water spraying area, and an end water baffle (69) is connected with the end support pillar (29) in a sticking way; the upper surface of the box girder (8) is scoured through a scouring nozzle (17);
4) the hanging plate (1) is installed and positioned: the top of the box girder (8) is provided with a suspension positioning body (4), and the suspension positioning body (4) consists of a stand column bottom plate (71), a support stand column (72), a cantilever beam (31), an external hanging rod (73) and a rod bottom support plate (74); vertical adjusting bolts (75) are arranged on the supporting upright posts (72), transverse adjusting bolts (76) are arranged on the cantilever beam (31), elastic supporting bodies (35) and bottom bearing plates (78) are arranged on the rod bottom supporting plates (74), and transverse supporting rods (79) and elastic sealing bodies (80) are arranged on the outer hanging rods (73) facing the hanging plate (1); the lower surface of the cantilever beam (31) is provided with a sliding channel (32) and a beam bottom supporting plate (33), and a sliding baffle (34) is arranged in the sliding channel (32); an elastic support body (35) is arranged between the beam bottom support plate (33) and the sliding baffle (34); the hanging plate (1) is provided with a connecting transverse rib (36), the upper part of the connecting anchor rib (10) is provided with a U-shaped connecting rib (37), and the U-shaped connecting rib (37) and the connecting transverse rib (36) are connected with a connecting transverse plate (38) through a fastening bolt (39);
5) the base side die (5) is arranged: a side die support (40) and a base side die (5) are arranged on the box girder (8), a side die bottom support (41) is arranged at the bottom end of the base side die (5), and a die side sliding groove (42) is arranged on the outer side surface of the base side die (5) facing the side die support (40); a bracket hoisting weight (44) is arranged on the sliding support rod (43); a limiting ejector rod (45) is arranged at the upper parts of the base side mold (5) and the hanging plate (1), and an ejector rod positioning bolt (46), a side mold limiting groove (47) and a hanging plate limiting groove (48) are arranged on the limiting ejector rod (45); the side die limiting groove (47) and the hanging plate limiting groove (48) are respectively connected with the base side die (5) and the hanging plate (1); a box side pressure plate (49) and a connecting lug plate (50) are arranged on the outer side wall of the built-in magic box (7), and a magic box adjusting rod (51) is arranged between the box side pressure plate (49) and the limiting ejector rod (45) so that the connecting lug plate (50) is connected with a base steel bar (52) which is connected with the magic box adjusting rod;
6) pouring concrete on the base: checking the spatial positions of the hanging plate (1), the built-in magic box (7) and the base side mold (5) and the connection strength of the base reinforcing steel bars (52) and the connecting lug plates (50) to meet the requirements, and then performing concrete pouring maintenance to form a cast-in-place base (92);
7) positioning and arranging guardrail columns: after the concrete of the cast-in-place base (92) forms strength, a cylinder bottom leveling layer (53) is laid at the bottom of the built-in magic box (7), and then a cylinder bottom connecting plate (54), a connecting sleeve (55) and a column bottom connecting section (56) are placed on the cylinder bottom leveling layer (53); an inter-column connecting ring (57) is arranged at the top end of the column bottom connecting section (56), a column positioning bracket (58) is arranged on the upper surface of the box girder (8), and a positioning hoop (59) is connected with the replaceable guardrail column (60) through a hoop bolt (93); after the bottom end of the replaceable guardrail column (60) is firmly connected with the inter-column connecting ring (57), the transverse positions of the column bottom connecting section (56) and the replaceable guardrail column (60) are synchronously corrected through the ring side correcting rod (61) and the positioning cross rod (62); the construction of injecting slurry (63) into the cylinder is firstly carried out, and then the column foot protective body (64) is arranged.
2. The construction method of the hanging plate type guardrail base of claim 1, which is characterized in that: step 3), rubber sheets or geomembranes are adopted for the inner water baffle (14), the outer water baffle (15) and the end water baffle (69), and plate bottom closing bodies (70) are arranged at the bottoms of the inner water baffle (14) and the end water baffle (69); the cross section of the filter residue plate (20) is arc-shaped, and a water filtering hole (68) is arranged on the filter residue plate (20).
3. The construction method of the hanging plate type guardrail base of claim 1, which is characterized in that: and step 5), the side die support (40) consists of a support bottom plate (81), a support sliding groove (82), a support upright rod (83), a support cross rod (84) and a sliding support rod (43), and the sliding support rod (43) and the support cross rod (84) are vertically connected with the support upright rod (83).
4. The construction method of the hanging plate type guardrail base of claim 1, which is characterized in that: step 7), an outer cylinder connecting rib (86) is arranged on the outer side wall of the connecting sleeve (55), an elastic connecting rib (87) is arranged on the inner side wall of the connecting sleeve (55), and an inner cylinder connecting bolt (88) is arranged at the bottom end of the connecting sleeve (55); the connecting sleeve (55) is connected with the cylinder outer connecting rib (86) and the elastic connecting rib (87) in a welding way, and the connecting sleeve (55) is connected with the cylinder inner connecting bolt (88) in a sticking way; the elastic connecting ribs (87) adopt rigid elastic sheets; the inner side wall of the inter-column connecting ring (57) is provided with connecting threads, 3-4 ring side correcting rods (61) are arranged on the outer side of the inter-column connecting ring (57) along the circumferential direction, and a cylinder wall pressure bearing plate (90) is arranged between the ring side correcting rods (61) and the built-in magic box (7); the upright post positioning bracket (58) consists of a post bottom bearing plate (91), a positioning upright post (89), a positioning cross rod (62), a positioning hoop (59) and a plate top pressing weight (85), and a cross rod bolt (77) is arranged on the positioning cross rod (62); the column foot protection body (64) is in a right trapezoid shape in cross section, is made of a rubber plate or a plastic plate or a steel plate or an alloy plate, and is connected with the replaceable guardrail column (60) in a sticking mode or in a welding mode.
5. The construction method of the hanging plate type guardrail base of claim 1, which is characterized in that: step 1) the guardrail post (6) comprises a post bottom connecting section (56) and a replaceable guardrail post (60).
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| CN201910168539.0A CN109972518B (en) | 2019-03-06 | 2019-03-06 | Construction method of hanging plate type guardrail base |
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| CN201910168539.0A CN109972518B (en) | 2019-03-06 | 2019-03-06 | Construction method of hanging plate type guardrail base |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0941657A (en) * | 1995-08-04 | 1997-02-10 | Ohbayashi Corp | Building construction of working scaffold |
| CN102383371A (en) * | 2011-08-25 | 2012-03-21 | 南京润盛建设集团有限公司 | Overpass concrete outside-hanged cantilever type flower bed and construction method thereof |
| CN102493350A (en) * | 2011-12-19 | 2012-06-13 | 中国一冶集团有限公司 | Construction method of landscape bridge outside-hanging crash barrier |
| CN107604813A (en) * | 2017-08-01 | 2018-01-19 | 温州华隆建设有限公司 | Municipal Bridge guardrail and its construction method |
| CN207435896U (en) * | 2017-11-16 | 2018-06-01 | 王亚陆 | A kind of Collison fence for bridge of the plug-in planting groove of prefabricated |
-
2019
- 2019-03-06 CN CN201910168539.0A patent/CN109972518B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0941657A (en) * | 1995-08-04 | 1997-02-10 | Ohbayashi Corp | Building construction of working scaffold |
| CN102383371A (en) * | 2011-08-25 | 2012-03-21 | 南京润盛建设集团有限公司 | Overpass concrete outside-hanged cantilever type flower bed and construction method thereof |
| CN102493350A (en) * | 2011-12-19 | 2012-06-13 | 中国一冶集团有限公司 | Construction method of landscape bridge outside-hanging crash barrier |
| CN107604813A (en) * | 2017-08-01 | 2018-01-19 | 温州华隆建设有限公司 | Municipal Bridge guardrail and its construction method |
| CN207435896U (en) * | 2017-11-16 | 2018-06-01 | 王亚陆 | A kind of Collison fence for bridge of the plug-in planting groove of prefabricated |
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| CN109972518A (en) | 2019-07-05 |
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