CN201865023U - Closed waterproof type central dividing strip for highway - Google Patents

Closed waterproof type central dividing strip for highway Download PDF

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Publication number
CN201865023U
CN201865023U CN2010206333829U CN201020633382U CN201865023U CN 201865023 U CN201865023 U CN 201865023U CN 2010206333829 U CN2010206333829 U CN 2010206333829U CN 201020633382 U CN201020633382 U CN 201020633382U CN 201865023 U CN201865023 U CN 201865023U
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CN
China
Prior art keywords
median strip
road
highway
central dividing
dividing strip
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Expired - Fee Related
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CN2010206333829U
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Chinese (zh)
Inventor
张玉恒
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JIANGSU HUAI'AN HIGHWAY ADMINISTRATION OFFICE
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JIANGSU HUAI'AN HIGHWAY ADMINISTRATION OFFICE
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Abstract

The utility model discloses a closed waterproof type central dividing strip for a highway. The pavement of the highway consists of a pavement base bottom (1), a base course (2) and a surface course (3). The central dividing strip is arranged at the center of the pavement and comprises core walls (4), an impervious layer (5) and a waterproof layer (6), wherein a bottom half curb (7) is connected with a top half curb (8) to form the core wall (4); the impervious layer (5) is laid on the pavement base bottom (1) between two core walls; and the inner sides of the core walls (4) and the surface of the impervious layer (5) are sprayed with emulsified asphalt so as to form the waterproof layer (6), therefore, the whole forms the central dividing strip. The integral waterproof efficiency of the central dividing strip is enhanced; not only the transverse waterproof function of the central dividing strip is enhanced, but also the problem that the edge of the middle pavement base bottom is loose is solved; and simultaneously, the green packing space in the central dividing strip is expanded.

Description

Highway sealing water proof type median strip
Technical field
The utility model belongs to the technical field that highway traffic infrastructure is built, and is specifically related to a kind of highway sealing water proof type median strip.
Background technology
The subgrade cross section of speedway, Class I highway adopts the monolithic section more.The general subgrade standard cross-section as shown in Figure 1.
" highway technical standard " (JTGB-2003) 3.0.4 bar stipulates that " speedway, Class I highway monolithic section are with in the middle of must being provided with.Middle band is by " two marginal strip and median strip are formed ", and median strip system is banketed by both sides road kerb, anticollision barrier, water-proof drainage system and centre thereof and forms, and adopts usually Convex shapedOr Shallow butterfly, its surface is planted grass greenization and is planted trees anti-dazzle.
The median strip is in the textural effect of playing the separation opposing traffic.Marginal strip provides safe driving necessary lateral clearance, and can guide driver's sight line.Can't guarantee traffic safety as band in the middle of not establishing, also be difficult to reach the requirement of corresponding road quality classification.The water-proof drainage system reduces road surface damage by water evil, avoids or alleviates the roadbed damaged or destroyed by flood, protects the important technique measure of environment along the line.
The convex shaped median strip:General convex shaped central strip bandwidth is less than or equal to 3 meters, and its surface is provided with the horizontal wall inscription of tendency both sides, so that surface water is got rid of to the road surface by cross flow.Simultaneously, ooze under water, stop the water that infiltrates in it further to infiltrate in road surface structare layer and the roadbed, usually according to its width and the different water-proof drainage mode of physical condition employing: i.e. blind drainage system, or sealing waterproofing system for reducing or remitting rainwater and green area irrigation.
Shallow butterfly median strip:When the median strip width greater than 3 meters, or shallow butterfly median strip should be adopted in the abundant area of rainfall, the waterproof and water drainage system of taking waterproof to combine with draining more, promptly by in the median strip, collecting well being set and transverse drain is discharged roadbed with water by certain fore-and-aft distance, ooze the harm roadbed to prevent that water from flowing down, side is oozed the harm road surface.
Adopt the median strip of blind drainage system:The blind drainage system is adopted in area that the central strip bandwidth is big, rainfall enriches or the highway section that the matrix vertical curve is set more, promptly vertical rubble french drain is set and transverse drain is set by certain distance in the bottom, median strip, water is in time discharged roadbed, ooze harm roadbed, side and ooze the harm road surface to prevent that water from flowing down. At present, this water-proof drainage mode of the many employings in the median strip of China's speedway,Shown in figure two.Adopting the shortcoming of the median strip of blind drainage system is that working procedure is more, and carries out earlier squeezing into the anticollision barrier column after the water proof structure construction, and operation has some setbacks and makes it to exist leakage (oozing) water problems; Construction costs is higher relatively; Be easy to for a long time in blind drainage system year silt up and can lose drainage gradually.
Adopt the median strip of sealing waterproofing system:The sealing waterproofing system is often adopted in area that the central strip bandwidth is less, rainfall is little or the direct highway section that the median strip is set on old pavement, promptly in bottom, median strip and road surface structare layer limit portion, adopt No. 10 thick cement mortar of integral cast-in-situ 2cm as waterproofing course, and then thereon the spray (being coated with) coating emulsified asphalt, and lay one deck waterproof geotextiles, ooze the harm roadbed under the current to stop, side is oozed the harm road surface. In recent years, Jiangsu Province's arterial highway construction project adopts this waterproof and the waterproof type of not draining,Shown in figure three.The shortcoming that adopts the median strip of sealing waterproofing system is must inner side edge portion of road pavement basic unit put in order the slope before the construction waterproof mortar, and there is loose problem in sub-surface inner side edge portion; On construction technology, be difficult to realize waterproof geotextiles and waterproofing mortar are fitted tightly, and the seam crossing of the joint of waterproof geotextiles, itself and anticollision barrier column also is difficult to accomplish to prevent the effect that seeps water by spraying mulseal; Working procedure is also more, and carries out earlier squeezing into the anticollision barrier column after the water proof structure construction, and operation has some setbacks and makes it to exist leakage (oozing) water problems.
Summary of the invention
The purpose of this utility model is: a kind of highway sealing water proof type median strip is provided, strengthen the integral waterproofing usefulness of median strip, not only strengthen the horizontal water-proof function of median strip, and the loose problem at middle part, solution road surface basic unit edge, also afforest the space of banketing simultaneously for expanding in the median strip.
Technical solution of the present utility model is: the road surface from bottom to top by at the bottom of the sub-surface, basic unit and surface layer constitute, in the middle of the road surface, establish the median strip, the median strip comprises core wall, impervious barrier and waterproofing course, connect the first half road kerb on the latter half road kerb and form core wall, the subbase upper berth on the road surface between the twice core wall infiltration layer of setting up defences, form waterproofing course at core wall medial surface and impervious barrier surface spraying mulseal, the whole median strip that forms.
At first, the cement concrete road kerb of both sides, median strip adds downwards and is deep at the bottom of the sub-surface, vertically forms twice waterproof concrete core wall between the banketing in sub-surface, surface layer and median strip; Secondly, the C2O handstone waterproof concrete that the ground subsoil layer top casting 3CM between twice waterproof concrete core wall is thick is as impervious barrier; At last, form waterproofing course at twice waterproof concrete core wall medial surface and handstone waterproof concrete impervious barrier surface integral spray mulseal.
The utlity model has following advantage:
The one, considers the median strip cross-sectional design as a whole, deepen road kerb to the sub-surface bottom surface, not only strengthened the horizontal water-proof function in median strip, and solved the loose problem of the sub-surface limit portion of road surface mid portion, also afforested the space of banketing for having expanded in the median strip.
The cast-in-place road kerb the latter half of the 2nd, elder generation's formwork erection, the sub-surface of constructing has again not only been saved medial branch retaining template for the construction of follow-up basic unit, and has been that the compaction quality that guarantees inner side edge portion of basic unit has been created advantage.
The 3rd. adopt the thick C2O handstone waterproof concrete of cast-in-place 3CM to replace No. 10 thick cement mortar of cast-in-place 2cm, improved the bulk strength and the barrier performance of impervious barrier as impervious barrier; Simultaneously, cancel in the median strip waterproof geotextiles that adopts usually, saved one working procedure and corresponding material, thereby can shorten the duration of a project, reduce engineering cost.
The 4th. made the working procedure of median strip in order, squeezed into anticollision barrier column after-pouring impervious concrete earlier, squeezed into after thoroughly having solved that the anticollision barrier column destroys impervious concrete layer and mulseal waterproofing course and the leakage seepage problem that exists.
The 5th. road kerb adopts the cast-in-place two step job practicess that combine with sliding formwork, the cast-in-place waterproof concrete road kerb the latter half of elder generation, the cast-in-place waterproof concrete road kerb of back sliding formwork the first half effectively improves the presentation quality of waterproof concrete road kerb, promotes the highway using character.
The 6th. ingenious high speed or the Class I highway median strip that utilizes road kerb to form the sealing water-proof function, operation is reasonable, and technology advanced person has improved the workmanship level, has promoted the meticulous grade of engineering, and cost economic is worthy to be popularized.
Description of drawings
Fig. 1 is speedway, Class I highway roadbed standard cross-section.
Fig. 2 is for adopting the median strip profile of blind drainage system.
Fig. 3 is for adopting the median strip profile of sealing waterproofing system.
Fig. 4 is sealing water proof type median strip profile.
Among the figure: at the bottom of 1 basic unit, 2 basic units, 3 surface layers, 4 core walls, 5 impervious barriers, 6 waterproofing courses, 7 the latter half road kerbs, 8 the first half road kerbs.
The specific embodiment
As shown in Figure 4, the road surface from bottom to top by at the bottom of the sub-surface 1, basic unit 2 and surface layer 3 constitute, in the middle of the road surface, establish the median strip, the median strip comprises core wall 4, impervious barrier 5 and waterproofing course 6, connect the first half road kerb 8 on the latter half road kerb 7 and form core wall 4, subbase 1 upper berth on the road surface between the twice core wall infiltration layer 5 of setting up defences forms waterproofing courses 6, the whole median strip that forms at core wall 4 medial surfaces and impervious barrier 5 surface spraying mulseals.
Below pressing Concrete construction sequence is made the median strip:
(1) on the ground subsoil layer, squeezes into median strip anticollision barrier column according to the working drawing design;
(2) utilize column as the template that supports upright road kerb the latter half, adopt the cast-in-place method of formwork erection, cast-in-place waterproof concrete road kerb the latter half is to basic unit's heights of roofs and finish its health, and the seam that vertically contracts is set synchronously;
(3) the ground subsoil layer between the cast-in-place waterproof concrete road kerb on both sides, median strip pushes up the thick C2O handstone waterproof concrete of cast-in-place 3CM as impervious barrier, with the corresponding seam that vertically contracts that is provided with of road kerb of both sides;
(4) finish the cement stabilized macadam base construction;
(5) secondary tooled joint, i.e. vertical abutment joint between waterproof concrete road kerb the latter half and the basic unit;
(6) adopt the cast-in-place method of sliding formwork, synovial membrane cast-in-place waterproof concrete road kerb the first half is also finished its health, corresponding with the latter half road kerb seam that vertically contracts that is provided with;
(7) cast-in-place waterproof concrete road kerb medial surface and the handstone waterproof concrete impervious barrier surface spraying mulseal on the both sides, median strip forms waterproofing course;
(8) in the median strip, banket and plant grass and tree planting, with greening, anti-dazzle, waterproof pollution load of overflow road surface.
(9) finish surface construction.
See attached list with the construction costs of every linear meter(lin.m.) length of the median strip of the median strip of adopting the blind drainage system, existing sealing waterproofing system in sealing water proof type median strip:
Three kinds of every linear meter(lin.m.) engineering quantities in median strip and cost contrast table
Illustrate: relatively for ease of three kinds of schemes, the central strip bandwidth is all in 2 meters, and asphalt concrete pavement thickness is in 12 centimetres, and cement stabilized macadam base thickness is in 34 centimetres, the rendzinas subbase is in 20 centimetres, and the road kerb width is in 20 centimetres and be higher than 13 centimetres on road surface.

Claims (1)

1. highway seals the water proof type median strip, the road surface is from bottom to top by (1) at the bottom of the sub-surface, basic unit (2) and surface layer (3) constitute, in the middle of the road surface, establish the median strip, the median strip comprises core wall (4), impervious barrier (5) and waterproofing course (6), the latter half road kerb (7) is gone up and is connected the first half road kerb (8) formation core wall (4), the subbase on the road surface between the twice core wall (1) the upper berth infiltration layer (5) of setting up defences, form waterproofing course (6) at core wall (4) medial surface and impervious barrier (5) surface spraying mulseal, the whole median strip that forms.
CN2010206333829U 2010-11-30 2010-11-30 Closed waterproof type central dividing strip for highway Expired - Fee Related CN201865023U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2010206333829U CN201865023U (en) 2010-11-30 2010-11-30 Closed waterproof type central dividing strip for highway

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CN201865023U true CN201865023U (en) 2011-06-15

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103147389A (en) * 2013-03-15 2013-06-12 天津市市政工程设计研究院 Novel bridge protecting facility
CN103882802A (en) * 2014-03-24 2014-06-25 天津市市政工程设计研究院 Cross-railway road bridge protection structure
CN104005313A (en) * 2014-06-16 2014-08-27 葛洲坝集团第二工程有限公司 Construction method for asphalt concrete pavement separation zone kerbs
CN108301293A (en) * 2018-02-06 2018-07-20 广州市佑安土木工程有限公司 A kind of construction method of road surface steady layer of water and appurtenant work

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103147389A (en) * 2013-03-15 2013-06-12 天津市市政工程设计研究院 Novel bridge protecting facility
CN103147389B (en) * 2013-03-15 2015-06-24 天津市市政工程设计研究院 Novel bridge protecting facility
CN103882802A (en) * 2014-03-24 2014-06-25 天津市市政工程设计研究院 Cross-railway road bridge protection structure
CN103882802B (en) * 2014-03-24 2015-10-28 天津市市政工程设计研究院 A kind of bridge safeguard structure of highway crossing railway
CN104005313A (en) * 2014-06-16 2014-08-27 葛洲坝集团第二工程有限公司 Construction method for asphalt concrete pavement separation zone kerbs
CN104005313B (en) * 2014-06-16 2015-12-02 中国葛洲坝集团第二工程有限公司 Asphalt concrete pavement dividing strip road kerb construction method
CN108301293A (en) * 2018-02-06 2018-07-20 广州市佑安土木工程有限公司 A kind of construction method of road surface steady layer of water and appurtenant work
CN108301293B (en) * 2018-02-06 2020-07-03 广州市佑安土木工程有限公司 Construction method of road surface water stabilization layer and auxiliary engineering

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Granted publication date: 20110615

Termination date: 20111130

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