CN107675781A - A kind of monoblock type double side wings marginal zone strangles transversal trench cover and its construction method - Google Patents

A kind of monoblock type double side wings marginal zone strangles transversal trench cover and its construction method Download PDF

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Publication number
CN107675781A
CN107675781A CN201711070792.XA CN201711070792A CN107675781A CN 107675781 A CN107675781 A CN 107675781A CN 201711070792 A CN201711070792 A CN 201711070792A CN 107675781 A CN107675781 A CN 107675781A
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China
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plate
strangles
strangle
laterally
monoblock type
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CN107675781B (en
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刘淑敏
张志谦
王浩坦
燕仲彧
沈超
周钺
秦洋
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JSTI Group Co Ltd
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JSTI Group Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06Gully gratings
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Road Paving Structures (AREA)

Abstract

The present invention relates to a kind of monoblock type double side wings marginal zone to strangle transversal trench cover and its construction method, including surface is provided with the cover plate of some water draining pass, in addition to:Longitudinal direction strangles plate, laterally strangles plate and flange plate, wherein:Longitudinal direction strangles plate and is vertically arranged at cover plate both lateral sides, and two longitudinal directions form transversal ditch structure between strangling plate, and flange plate is horizontally placed on cover plate both lateral sides and on the outside of transversal ditch structure, and strangles plate vertical connection with longitudinal direction;Laterally strangle plate to be horizontally arranged at interval below flange plate and be vertically arranged with flange plate, laterally the Le side of plate one is strangled plate with longitudinal direction and connected, and is transversely to the machine direction Le plate;Laterally strangling plate surface and be provided with two circular cavities, being fixed for will laterally strangle plate with concrete.This programme, it is possible to achieve by cover plate, laterally Le plate, longitudinal direction Le plate and the edge of a wing form one, and the transversal trench cover of monoblock type is anchored in concrete by the hole by laterally strangling plate, the area of increase concrete and cover plate, common stress, and stability is good.

Description

A kind of monoblock type double side wings marginal zone strangles transversal trench cover and its construction method
Technical field
The present invention relates to a kind of draining, traffic and structural engineering field, more particularly to a kind of monoblock type double side wings marginal zone to strangle Transversal trench cover and its construction method.
Background technology
Landscape requirement, the raising of antinoise requirement, urban transportation and highway are handed over the development and traffic of tunneling technique Lead to and be more likely to substitute overpass using tunnel in some local transport nodes or special road section, on the one hand the appearance in tunnel solves Determined rapid transit the problem of, while preferably solve urban landscape and city vehicle noise to caused by the resident of section bear Face sound and complaint.
Although the appearance in tunnel possesses plurality of advantages, but the collection and exclusion to tunnel lower slope section rainwater bring it is very big Problem, conventional way is at tunnel face and tunnel bottom sets single or double transversal ditch and is capped grating type cover plate, To intercept the rainwater flowed down along slope.Traditional transversal ditch grid cover plate is typically anchored at the mixed of both sides using the method for bolt anchoring In solidifying soil, in the case where the volume of traffic is big, traction engine is more, vehicle is used repeatedly, bolt looseness, nut can be caused to lose, under long term, Cover plate lacks to be reliably connected with lower sleeping concrete, and cover plate loosens, and tilts, driving noise is big, comfortableness is poor, most serious person can go out Existing cover plate is taken up by the vehicle of fast running, hinders car and hurts sb.'s feelings, and traffic accident occurs.
To solve the above problems, at present in work progress, Integral iron casting cover plate is widely used, using factory The technique of pouring molding, solves the above problems to a certain extent.It is divided into three major parts on forming, and is grille cover respectively Plate main body, strangle plate, flange plate.Cover plate main body and the edge of a wing construct basic indistinction with conventional discharge ditch, and strangle plate as integral type The important component of cover plate, it is the unexistent part of traditional type cover plate.During installation, strangle plate and be inserted directly into concrete ditch body, It is close to transversal ditch ditch body, plays stable cover plate effect to a certain extent, bolt plays a part of in similar conventional cover plate.Integral type The advantages of gutter:Compact plant pours, good integrity;Plate insertion concrete ditch body is strangled, stability is good;It can be mass. But during use, integral type cover plate has the following disadvantages:Plate insertion concrete ditch body is strangled, by concrete ditch body with strangling plate The stable cover plate of wedge action, strangle plate, flange plate not together with concreting, it is impossible to form entirety with concrete, altogether Same stress, therefore its stress is limited, under the long term of vehicular load, strangles plate with concrete ditch body because build-in loosely produces loosening And then loss of stability, cause vehicular traffic traveling back shroud to send very big noise, vehicle pitching, comfortableness is poor, and exists Potential safety hazard.
In view of it is above-mentioned the defects of, the design people is actively subject to research and innovation, to found a kind of monoblock type bilateral edge of a wing Band strangles transversal trench cover and its construction method, the shortcomings that evading above-mentioned integral type cover plate and hidden danger, makes it with more in industry Value.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of monoblock type double side wings marginal zone to strangle transversal trench cover And its construction method.
Strangle transversal trench cover the embodiments of the invention provide a kind of monoblock type double side wings marginal zone, including surface be provided with it is some The cover plate of water draining pass, in addition to:Longitudinal direction strangles plate, laterally strangles plate and flange plate, wherein:
The longitudinal direction strangles plate and is vertically arranged at the cover plate both lateral sides, and two longitudinal directions form transversal ditch structure between strangling plate, The flange plate is horizontally placed on the cover plate both lateral sides and on the outside of the transversal ditch structure, and strangles plate with the longitudinal direction Vertical connection;
The plate of laterally strangling is horizontally arranged at interval below the flange plate and is vertically arranged with the flange plate, described laterally to strangle The side of plate one is strangled plate with the longitudinal direction and connected, and strangles plate perpendicular to the longitudinal direction;
Preferably, the plate surface of laterally strangling is provided with two circular cavities, for the plate of laterally strangling to be fixed with concrete.
Preferentially, it is 10cm-20cm that plate spacing distance is laterally strangled described in each two, and the plate thickness of laterally strangling is 10cm-15cm。
Preferentially, a diameter of 3cm-6cm of described hole.
Preferentially, the cover plate is included by some horizontal some water draining pass strangled plate and two vertical Le plate vertical interlaceds and formed, Prominent round bump is evenly arranged with the horizontal Le plate.
Preferentially, the cover plate width is less than or equal to 1 meter.
Preferably, it is that top to bottom thickness becomes narrow gradually that harden structure is strangled in the longitudinal direction, and it is uniform that plate both sides are strangled in the longitudinal direction Circular hole is provided with, the longitudinal direction Le plate surface among plate is laterally strangled described in each two and is each provided with circular hole.
A kind of monoblock type double side wings marginal zone strangles the construction method of transversal trench cover, comprises the following steps:
S1:According to target transverse ditch water drainage design requirement, calculate and formulate cover plate, laterally the chis such as plate, flange plate are strangled in Le plate, longitudinal direction Very little, specification, factory's die sinking and the integral formula double side wings marginal zone of one-time-concreting strangle transversal trench cover, and make specified quantity;
S2:The transversal trench cover of the monoblock type made is transported to job site, during pavement construction, transversal ditch is reserved and both sides is poured Build the planar range and ditch body constructional depth of concrete;
S3:By ditch body width standing tree masterplate, masterplate highly subtracts the transversal trench cover of monoblock type for ditch body depth and longitudinally strangles plate height, And stable masterplate;
S4:Ditch body masterplate both sides pour steel fiber reinforced concrete and vibration compacting;
S5:After concrete strength reaches the 50% of design strength, the transversal trench cover of monoblock type is placed on the steel fibre for having formed intensity Tie up on concrete and fixed;
S6:Continue to pour steel fiber reinforced concrete and vibration compacting at the flange plate of the transversal trench cover both sides of monoblock type;
S7:Steel fiber reinforced concrete is poured after covering both sides with straw bag, health of sprinkling water, intensity is formed.
By such scheme, the present invention at least has advantages below:
1. by some laterally Le plates that are horizontally arranged at interval under flange plate, laterally strangle on plate and hole is set, this is laterally strangled Plate, longitudinal direction strangle plate, flange plate and cover plate are connected to form the transversal trench cover of monoblock type, factory's primary concreting, and overall performance is good;Will The transversal trench cover of monoblock type can form entirety at pavement construction scene with both sides cast-in-place concrete, and the hole that transverse direction is strangled on plate can incite somebody to action Cover plate is anchored in concrete, transversal trench cover is formed entirety with concrete, and increases the contact area of concrete and cover plate, Common stress, bulk strength is high, stability is high, service life length;Laterally strangle plate Bilateral Symmetry to set, ditch body both sides concrete pair Title pours, and overall stress form is simply uniform, can reduce cover plate unstability, noise that vehicular load long term is brought, improves and relaxes Adaptive.
2. by setting monolithic cover plate width within 1 meter, it is easy to prefabrication, monolithic molding, convenient construction installation.
3rd, the water draining pass being made up of the horizontal Le plate and vertical Le plate vertical interlaced that are arranged on lid surface is in order to rainwater Uniformly flow into gutter.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description of the drawings
Fig. 1 is that a kind of monoblock type double side wings marginal zone provided by the invention strangles transversal trench cover stereogram;
Fig. 2 is the front view that a kind of monoblock type double side wings marginal zone provided by the invention strangles transversal trench cover;
Fig. 3 is the top view that a kind of monoblock type double side wings marginal zone provided by the invention strangles transversal trench cover;
Fig. 4 is the side view that a kind of monoblock type double side wings marginal zone provided by the invention strangles transversal trench cover;
Fig. 5 is integral construction state diagram provided by the invention.
Reference:1- cover plates, 2- longitudinally strangle plate, and 3- laterally strangles plate, 4- flange plates, 5- holes.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Referring to Fig. 1, a kind of monoblock type double side wings marginal zone of a preferred embodiment of the present invention strangles transversal trench cover, including surface The cover plate 1 of some water draining pass is provided with, in addition to:Longitudinal direction strangles plate 2, laterally strangles plate 3 and flange plate 4, wherein:Strangle plate 2 in longitudinal direction The both lateral sides of cover plate 1 are vertically arranged at, two longitudinal directions form transversal ditch structure between strangling plate 2, and flange plate 4 is horizontally placed on cover plate 1 Both lateral sides and strangle the vertical connection of plate 2 on the outside of the transversal ditch structure, and with longitudinal direction;Plate 3 is laterally strangled to be horizontally arranged at interval in the wing It is vertically arranged below listrium 4 and with flange plate 4, laterally strangles the side of plate 3 one and connect with longitudinal direction Le plate 2, and be transversely to the machine direction Le plate 2;Laterally strangling the surface of plate 3 and be provided with two circular cavities 5, being fixed for will laterally strangle plate 3 with concrete.
By some laterally Le plates 3 that are horizontally arranged at interval under flange plate 4, laterally strangle on plate 3 and hole is set, the transverse direction Strangle plate 3, longitudinal direction strangles plate 2, flange plate 4 and cover plate and is connected to form the transversal trench cover of monoblock type, factory's primary concreting, overall performance It is good;The transversal trench cover of monoblock type can be formed into entirety at pavement construction scene with both sides cast-in-place concrete, laterally strangle the hole on plate Cover plate can be anchored in concrete by hole, transversal trench cover and concrete is formed entirety, and increase connecing for concrete and cover plate Contacting surface is accumulated, common stress, and bulk strength is high, stability is high, service life length;Laterally strangle plate Bilateral Symmetry to set, ditch body both sides Concrete symmetrically pours, and overall stress form is simply uniform, can reduce cover plate unstability that vehicular load long term brings, make an uproar Sound, improve comfortableness.
Referring to Fig. 2, entirety can not be formed with concrete to evade Le plate in the prior art, therefore its stress is limited, in vehicle Under the long term of load, plate is strangled with concrete ditch body because build-in loosely produces loosening and then loss of stability in both sides, peace be present Full hidden danger, thus the present invention provides a kind of monoblock type double side wings marginal zone and strangles transversal trench cover, sets and is uniformly arranged under flange plate It is multiple laterally to strangle plate 3, and 2 holes 5 are uniformly opened laterally strangling the surface of plate 3, make concrete when pouring, laterally strangle the both sides of plate 3 Concrete plate 3 and the common fixation of concrete will can laterally be strangled by hole 5, it is fully wrapped around by concrete laterally to strangle plate, Plate 2, laterally Le plate 3 are strangled in longitudinal direction simultaneously and flange plate 4 is connected again, and this monoblock type forms structure, ensure that except cover plate Main body is crossed water section and not connected with concrete outside, and other components are wrapped up by concrete, and the common stress of concrete, together The long term of vehicular load is resisted, bulk strength improves, and stability is good and service life is grown.Therefore, the present invention provides a kind of Monoblock type double side wings marginal zone strangles transversal trench cover, and it is 10cm-20cm that each two, which laterally strangles the spacing distance of plate 3, and it is thick laterally to strangle plate 3 Spend for 10cm-15cm.Further, hole diameter 3cm-6cm.Set it should be particularly mentioned that each two laterally strangles the interval of plate 3 15cm Put, it be 12cm laterally to strangle plate 3 and set thickness, and hole diameter be arranged to 4.5cm can make vertically and horizontally stress evenly, deform It is few, most preferably to be designed in the present invention, distance and thickness also can be accordingly changed according to actual conditions.The transversal operculum colpi of each monoblock type It is decision design that plate or so, which respectively sets three laterally to strangle plate 3, and the stress of the transversal trench cover of monoblock type can be caused by steady and equal It is even.
Transversal trench cover is strangled due to monoblock type double side wings marginal zone to be mainly used in collecting rainwater, thus needs to set in lid surface Multiple ducts are put to be used in rainwater inflow groove, therefore the present invention provides a kind of monoblock type double side wings marginal zone and strangles transversal trench cover, Cover plate 1 includes being evenly arranged with plate by some horizontal some water draining pass strangled plate and two vertical Le plate vertical interlaceds and formed, horizontal strangle Prominent round bump.Prominent round bump causes vehicle operationally to press through transversal trench cover, increase vehicle tyre and lid The contact surface of plate surface, anti-skidding effect can be played and make vehicle traveling more steady.The horizontal plate of strangling of cover plate 1 is arranged to arch, and two End is slightly thick, middle partially thin, and this, which is operated, make it that cover plate entirety stress is preferable.
Because the transversal trench cover of monoblock type is usually factory's die sinking, one-piece casting shaping, thus most preferably monolithic lid Plate width is more convenient construction and installation within 1 meter, thus, further, the width of cover plate 1 is less than or equal to 1 meter.
It is that top to bottom thickness becomes narrow gradually that the structure of plate 2 is strangled in longitudinal direction, and the block plate is set by component actual stress distribution situation Non-uniform member is calculated as, material is saved on the premise of use intensity is ensured.Referring to Fig. 4, longitudinal direction is strangled the both sides of plate 2 and is evenly arranged with Circular hole, the longitudinal direction that each two is laterally strangled among plate 3 strangle the surface of plate 2 and are each provided with circular hole, and concrete can block circular hole, from And realize that longitudinal direction strangles plate 2 and entirety is also formed with concrete so that the transversal trench cover of monoblock type is fully connected with concrete, more surely It is fixed.
A kind of monoblock type double side wings marginal zone strangles the construction method of transversal trench cover, comprises the following steps:
S1:According to target transverse ditch water drainage design requirement, calculate and formulate cover plate 1, laterally plate 2, flange plate 4 are strangled in Le plate 3, longitudinal direction Equidimension, specification, factory's die sinking and the integral formula double side wings marginal zone of one-time-concreting strangle transversal trench cover, and make specified quantity;
S2:The transversal trench cover of the monoblock type made is transported to job site, during pavement construction, transversal ditch is reserved and both sides is poured Build the planar range and ditch body constructional depth of concrete;
S3:By ditch body width standing tree masterplate, masterplate highly subtracts the transversal trench cover of monoblock type for ditch body depth and longitudinally strangles plate height, And stable masterplate;
S4:Ditch body masterplate both sides pour steel fiber reinforced concrete and vibration compacting;
S5:After concrete strength reaches the 50% of design strength, the transversal trench cover of monoblock type is placed on the steel fibre for having formed intensity Tie up on concrete and fixed;
S6:Continue to pour steel fiber reinforced concrete and vibration compacting at the flange plate 4 of the transversal trench cover both sides of monoblock type;
S7:Steel fiber reinforced concrete is poured after covering both sides with straw bag, health of sprinkling water, intensity is formed.
Described above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that is led for this technology For the those of ordinary skill in domain, without departing from the technical principles of the invention, some improvement and modification can also be made, These improvement and modification also should be regarded as protection scope of the present invention.

Claims (8)

1. a kind of monoblock type double side wings marginal zone strangles transversal trench cover, including surface is provided with the cover plate of some water draining pass(1), its It is characterised by, in addition to:Strangle plate in longitudinal direction(2), laterally strangle plate(3)And flange plate(4), wherein:
Strangle plate in the longitudinal direction(2)It is vertically arranged at the cover plate(1)Plate is strangled in both lateral sides, two longitudinal directions(2)Between formed it is horizontal Cut ditch structure, the flange plate(4)It is horizontally placed on the cover plate(1)Both lateral sides and on the outside of the transversal ditch structure, And strangle plate with the longitudinal direction(2)Vertical connection;
It is described laterally to strangle plate(3)It is horizontally arranged at interval in the flange plate(4)Lower section and with the flange plate(4)It is vertically arranged, It is described laterally to strangle plate(3)Plate is strangled with the longitudinal direction in one side(2)Connect, and plate is strangled perpendicular to the longitudinal direction(2).
2. a kind of monoblock type double side wings marginal zone strangles transversal trench cover according to claim 1, it is characterised in that described laterally to strangle Plate(3)Surface is provided with two circular cavities(5), for laterally strangling plate by described(3)Fixed with concrete.
3. a kind of monoblock type double side wings marginal zone strangles transversal trench cover according to claim 2, it is characterised in that described in each two Laterally strangle plate(3)Spacing distance is 10cm-20cm, and the transverse direction strangles plate(3)Thickness is 10cm-15cm.
4. a kind of monoblock type double side wings marginal zone strangles transversal trench cover according to claim 1, it is characterised in that:Described hole (5)A diameter of 3cm-6cm.
5. a kind of monoblock type double side wings marginal zone strangles transversal trench cover according to claim 1, it is characterised in that the cover plate (1)Including being uniformly arranged by some horizontal some water draining pass strangled plate and two vertical Le plate vertical interlaceds and formed, horizontal strangle on plate There is prominent round bump.
6. a kind of monoblock type double side wings marginal zone strangles transversal trench cover according to claim 1, it is characterised in that the cover plate (1)Width is less than or equal to 1 meter.
7. a kind of monoblock type double side wings marginal zone strangles transversal trench cover according to claim 1, it is characterised in that strangles the longitudinal direction Plate(2)Structure is that top to bottom thickness becomes narrow gradually;Strangle plate in the longitudinal direction(2)Both sides are evenly arranged with circular hole, each two institute State and laterally strangle plate(3)Strangle plate in the middle longitudinal direction(2)Surface is each provided with circular hole.
8. a kind of monoblock type double side wings marginal zone strangles the construction method of transversal trench cover according to claim 1, it is characterised in that Comprise the following steps:
S1:According to target transverse ditch water drainage design requirement, calculate and formulate cover plate(1), laterally strangle plate(3), longitudinal direction strangle plate(2), the wing Listrium(4)Equidimension, specification, factory's die sinking and the integral formula double side wings marginal zone of one-time-concreting strangle transversal trench cover, and make rule Fixed number amount;
S2:The transversal trench cover of the monoblock type made is transported to job site, during pavement construction, transversal ditch is reserved and both sides is poured Build the planar range and ditch body constructional depth of concrete;
S3:By ditch body width standing tree masterplate, masterplate highly subtracts the transversal trench cover of monoblock type for ditch body depth and longitudinally strangles plate height, And stable masterplate;
S4:Ditch body masterplate both sides pour steel fiber reinforced concrete and vibration compacting;
S5:After concrete strength reaches the 50% of design strength, the transversal trench cover of monoblock type is placed on the steel fibre for having formed intensity Tie up on concrete and fixed;
S6:The flange plate from the transversal trench cover both sides of monoblock type(4)Continue to pour steel fiber reinforced concrete and vibration compacting in place;
S7:Steel fiber reinforced concrete is poured after covering both sides with straw bag, health of sprinkling water, intensity is formed.
CN201711070792.XA 2017-11-03 2017-11-03 Integral double-side flange belt tightening transverse ditch cover plate and construction method thereof Active CN107675781B (en)

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Application Number Priority Date Filing Date Title
CN201711070792.XA CN107675781B (en) 2017-11-03 2017-11-03 Integral double-side flange belt tightening transverse ditch cover plate and construction method thereof

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Application Number Priority Date Filing Date Title
CN201711070792.XA CN107675781B (en) 2017-11-03 2017-11-03 Integral double-side flange belt tightening transverse ditch cover plate and construction method thereof

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CN107675781B CN107675781B (en) 2024-07-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110984349A (en) * 2019-12-19 2020-04-10 中铁第六勘察设计院集团有限公司 Mounting structure and mounting method of drainage grate with transverse ditch

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004270293A (en) * 2003-03-07 2004-09-30 Norihiro Umezawa Method of manufacturing side ditch product with variable gradient type cover, and the side ditch product
JP2005264722A (en) * 2002-08-08 2005-09-29 Ito Yogyo Co Ltd Catchment grating and road draining structure using same
JP2007092315A (en) * 2005-09-27 2007-04-12 Retug Inc Side ditch unit and grating lid making use therefor
CN101631917A (en) * 2006-10-30 2010-01-20 阿考塞弗林阿尔曼有限公司 Grating
CN201952818U (en) * 2011-03-24 2011-08-31 王海勤 Flange type well lid
CN207525862U (en) * 2017-11-03 2018-06-22 苏交科集团股份有限公司 A kind of monoblock type double side wings marginal zone strangles transversal trench cover

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005264722A (en) * 2002-08-08 2005-09-29 Ito Yogyo Co Ltd Catchment grating and road draining structure using same
JP2004270293A (en) * 2003-03-07 2004-09-30 Norihiro Umezawa Method of manufacturing side ditch product with variable gradient type cover, and the side ditch product
JP2007092315A (en) * 2005-09-27 2007-04-12 Retug Inc Side ditch unit and grating lid making use therefor
CN101631917A (en) * 2006-10-30 2010-01-20 阿考塞弗林阿尔曼有限公司 Grating
CN201952818U (en) * 2011-03-24 2011-08-31 王海勤 Flange type well lid
CN207525862U (en) * 2017-11-03 2018-06-22 苏交科集团股份有限公司 A kind of monoblock type double side wings marginal zone strangles transversal trench cover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110984349A (en) * 2019-12-19 2020-04-10 中铁第六勘察设计院集团有限公司 Mounting structure and mounting method of drainage grate with transverse ditch

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