CN104278604B - Speedway shape of a saddle pioneer road process for constructing - Google Patents
Speedway shape of a saddle pioneer road process for constructing Download PDFInfo
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- CN104278604B CN104278604B CN201410591199.XA CN201410591199A CN104278604B CN 104278604 B CN104278604 B CN 104278604B CN 201410591199 A CN201410591199 A CN 201410591199A CN 104278604 B CN104278604 B CN 104278604B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/002—Design or lay-out of roads, e.g. street systems, cross-sections ; Design for noise abatement, e.g. sunken road
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The present invention relates to highway construction technical field.A kind of speedway shape of a saddle pioneer road process for constructing, in express highway roadbed one or both sides to be built, carries out building and moves towards identical pioneer road with express highway roadbed; For place speedway being designed with bridge, culvert, channel design thing, the pioneer road place of its correspondence adopts bionics principle, builds pioneer road by the shape of a saddle.Effectively ensure that roadbed, the globality on road surface and construction quality, objectively effect a radical cure the difficult problem of " end of the bridge (containing the platform back of the body) jumps car ", filled up the world blank, its advance, no matter at international and the domestic meaning and value all with milestone, really overcomes inertial thinking.
Description
Technical field
The present invention relates to highway construction technical field, be specifically related to a kind of speedway shape of a saddle pioneer road process for constructing.
Background technology
It is a global problem that end of the bridge (containing the platform back of the body) jumps car.Recent decades, countries in the world all conduct in-depth research, take various methods and measures (remarking additionally) below, even have employed many new technologies, pertinent literature is thousands of, all be intended to solve Similar Problems, but whole, the many factors that relates to too complicated because of problem, still cannot reach desirable object so far.
Trace it to its cause, see Fig. 1, except subjective factor impact is comparatively large, odjective cause that is very important and that easily ignored by people (especially people easily note in practice less than essential factor) be: (1), along with the continuous raising of roadbed, takes the method for longitudinal rolling " cannot approach " works abutment body and parados; Take the method laterally rolled, road roller, in the width deficiency (even if taking the method etc. of the wide 50cm of every side extra-fill) again of transverse direction, also cannot roll put in place (because road roller rolls required length of wagon deficiency).So just create " rolling blind area ", constructor has to small-sized rammer process or carelessly deals with get over (of paramount importance link is done something against one's will), thus, there are serious problems in the place of key.(2) equally along with the continuous raising of roadbed, unit in charge of construction has to " to draw slope " at works one end (head) opening and builds up and down ramp, to solve muck haulage (Transporting equipment) vehicle climb and fall problem, simultaneously also as the road transporting cement stabilized macadam base, subbase and last conveying asphalt concrete surface layer material in the future.So so, just draw more serious problem: because these up and down ramps itself take " roadbed " entity part, terminating less than Practical Completion cannot premature removal, when last making asphalt pavement structural layer, " breach " roadbed on slope is drawn how on earth to process? not hard to imagine, originally whether the road structure of design department's design can be guaranteed in these places, how to ensure again? leave defect to be inevitable! Meanwhile, due to difficulty (the local road roller of opening, because keeping the Equilibrium of vehicle body, cannot roll) that opening " draws slope " and again increase road roller to roll at all.We cry on the one hand to ring and solve " end of the bridge (containing the platform back of the body) jumps car " problem, arrange and roll obstacle, and manufacture road structure " weak floor " in end of the bridge (the containing the platform back of the body) position of this key, how to deal with problems again on the other hand?
For drawing slope breach, see Fig. 2, it can cause the disappearance of former project organization level, because breach occurs in the soil layer stage, all subgrade and pavements construction " three phases " all will use this breach, finally mending will after structure at all levels all completes when filling out breach, it must cause to mend fills out material that barbed portion adopts and the intrinsic inconsistent imperfection with technique, thus not only do not effect a radical cure the problem of differential settlement, on the contrary, think and manufactured overall differential settlement, thus so-called radical cure end of the bridge (containing the platform back of the body) jumping car just becomes Arabian Nights.
The method that before certain, domestic and international existing tradition solution end of the bridge jumps (containing the platform back of the body) car is: 1. the major measure of external employing: 1) abutment and embankment are built on solid natural soil matrix; 2) transition slab at bridge head of sufficient length and intensity is built; 3) appropriate filling material is selected; 4) abundant compacting filling material or make filling material be in stable state; 5) keep draining unimpeded; 6) low embankment is built; 7) earthwork is filled and is had the sufficient time interval between laying of roadway; 8) correct construction method and strict inspection is adopted; 9) traffic loading is alleviated.2. the major measure of domestic employing: 1) pay attention to bridge foundation process, fill construction technique after the platform that employing is advanced.Select suitable compacting equipment, guarantee the backfill in time of the platform back of the body, backfill compacting degree reaches requirement.2) improve ground performance, improve bearing capacity of foundation soil, reduce relative settlement.3) select filler after platform targetedly, improve Bridgehead by Blastig degree of compaction.4) carry out the draining of approach embankment, waterproofing, transition slab at bridge head is set.5) optimizing design scheme, reinforcing embankment of adopting new technology.
Above method all rests in the angle of Theory Thinking, and whether realistic, whether can to reach radical cure end of the bridge (containing the platform back of the body) jumping car object, does not arouse enough attention.Studying carefully its key is the research of site construction technology not deep enough, have ignored the existence of " rolling blind area " and " the project organization break drawing slope breach to cause loses " this objective fact that can not be ignored.
Summary of the invention
The object of the invention is for above-mentioned Problems existing and deficiency, utilize " bionics " principle, by simulating the image of " saddle ", overcome inertial thinking, change a kind of thinking, the shape local widening roadbed (simultaneously ensureing the unimpeded of pioneer road) utilizing pioneer road special, ensures that rolling apparatus can roll and puts in place, provides one to solve the speedway shape of a saddle pioneer road process for constructing of end of the bridge (containing the platform back of the body) jumping car preferably.
For achieving the above object, the main technical schemes taked is:
A kind of speedway shape of a saddle pioneer road process for constructing, in express highway roadbed one or both sides to be built, carries out building and moves towards identical pioneer road with express highway roadbed; For place speedway being designed with bridge, culvert, channel design thing, the pioneer road place of its correspondence adopts bionics principle, and build pioneer road by the shape of a saddle, the process for constructing of its pioneer road mainly comprises the following steps:
1) show clearly original ground, flatten, roll some times, then place Min layers fills out simple and easy surface material brick slag, aggregate chips etc. thereon, leveling is roller-compaction also, forms pioneer road;
2) bridge is had at the corresponding Expressway Design of pioneer road, culvert, in the scope of channel design thing 5 ~ 10m, along with the continuous increase of Subgrade Soils of Expressway side's filled height, each section of pioneer road place of its correspondence all carries out synchronous raising by saddle-shaped configuration, and form overall structure with express highway roadbed main body, draw slope to fill to shape of a saddle pioneer road two ends simultaneously, shape of a saddle pioneer road can be formed thus, in Roadbed Construction process, the compensation roadbed height at shape of a saddle pioneer road top and express highway roadbedly will remain contour along connecing,
3) complete until express highway pavement engineering construction and possess standard and hand over after condition, shape of a saddle pioneer road is removed, express highway roadbedly carry out the process of brush slope to this section simultaneously.
At described pioneer road outside spacers, meeting island is set, meeting island for outwards to widen 3.5m ~ 4.5m again by pioneer road outward flange, the region of long 8m ~ 10m.
Step 2) in, carry out shape of a saddle pioneer road at employing filling method constantly to increase in lifting process, to the surface chipping of shape of a saddle pioneer road Elevated section, and carry out rolling formation temporary construction sidewalk, so repeatedly carry out until express highway roadbed build completes.
In step 3), adopt excavator remove pioneer road and brush slope, for shape of a saddle partial demolition and the unnecessary earthwork of brushing slope, transport directly in Expressway Central Strip, as greening soil.
Described shape of a saddle pioneer road top is 5m ~ 10m with the express highway roadbed contour compensation roadbed length flushed, and longitudinal grade is 1% ~ 3%.
Outside the compensation roadbed two ends of described shape of a saddle pioneer road, relatively high position place is provided with the circular reflective mirror that diameter is 0.8m-1.5m.
Described shape of a saddle pioneer road is the assembled steel beam column of a series of universal rod body, beret truss, general general rod member or special rod member, it is according to different express highway roadbed height, determine that shape of a saddle pioneer road needs the height of the steel beam column compensating roadbed part, steel beam column suitably embeds a part in express highway roadbed side slope when carrying out splicing and increasing, in like manner carry out the spreading of slope, two ends steel beam column simultaneously and increase according to the requirement of longitudinal grade.
Described steel beam column end face is the movable road device that an employing U-bolts connects, this movable road device is in advance according to the movable steel suspension bridge bridge deck structure that the principle of steel suspension bridge had been made already, piecemeal, segmentation and piece weight are suitable, be convenient to flexible combination install, uppermost this layer of movable steel suspension bridge bridge floor only first need be laid down when increasing, original steel beam column basis is reinstalled after increasing steel suspension bridge bridge floor part, and so repeatedly operates; Draw slope part steel beam column according to the height calculated in advance and longitudinal grade, with assembled saddle road steel beam column part along connecing.
Adopt technique scheme, acquired beneficial effect is:
The present invention adopts " bionics " principle, process Bridge is built for the speedway existed, culvert, channel design thing place cannot roll and put in place, deck artificially lacks, car phenomenon is jumped in appearance after causing construction to complete (differential settlement), the present invention is fully by " the special construction method " of pioneer road, namely the method compensating roadbed is formed by " shape of a saddle " pioneer road, effectively solve work progress Bridge, culvert, channel design thing place rolls (cannot ensure) not in place, also " cut " that solve roadbed end recent decades " popular " draws slope pattern simultaneously, cause roadbed, the problem of road structure level weakness, effectively ensure that roadbed, the globality on road surface and construction quality, objectively effect a radical cure the difficult problem of " end of the bridge (containing the platform back of the body) jumps car ", fill up the world blank, no matter its advance is at international and the domestic meaning and value all with milestone, really overcome inertial thinking, it is the typical successful example of " stone on its mountain can attack jade ".
Accompanying drawing explanation
Fig. 1 is that structural representation built by existing speedway.
Fig. 2 is speedway deck general schematic.
Fig. 3 is that the structural representation with pioneer road built by speedway of the present invention.
Fig. 4 be in Fig. 3 A-A to structural representation.
Fig. 5 be in Fig. 3 B to structural representation.
Sequence number in figure: 1 for express highway roadbed, 2 be express highway roadbed side slope, 3 be pioneer road, 4 be meeting island, 5 be bridge or culvert, channel design thing, 6 is roadbed breach (opening), 7 be shape of a saddle pioneer road for rolling blind area, 8,9 be reflective mirror for compensating roadbed, 10,11 be soil layer, 12 be cement stabilized macadam layer, 13 be asphalt concrete pavement.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
Embodiment one: a kind of speedway shape of a saddle pioneer road process for constructing, in express highway roadbed one or both sides to be built, carries out building and moves towards identical pioneer road with express highway roadbed; For the bridge that speedway is designed with, culvert, channel design thing place, the pioneer road place of its correspondence adopts bionics principle, and build pioneer road by the shape of a saddle, the process for constructing of its pioneer road mainly comprises the following steps:
1) show clearly original ground, flatten, roll some times, then paving fills out simple and easy surface material brick slag, aggregate chips etc. thereon, leveling is roller-compaction also, forms pioneer road;
2) bridge is had at the corresponding Expressway Design of pioneer road, culvert, in the scope of channel design thing 5 ~ 10m, along with the continuous increase of Subgrade Soils of Expressway side's filled height, each section of pioneer road place of its correspondence all adopts the method for banketing to carry out synchronous raising by saddle-shaped configuration, and form overall structure with express highway roadbed main body, draw slope to fill to shape of a saddle pioneer road two ends simultaneously, shape of a saddle pioneer road can be formed thus, constantly increase in lifting process at shape of a saddle pioneer road, to the surface chipping of shape of a saddle pioneer road Elevated section, and carry out rolling formation temporary construction sidewalk, so repeatedly carry out until express highway roadbed build completes, in Roadbed Construction process, the compensation roadbed height at shape of a saddle pioneer road top and express highway roadbedly will remain contour along connecing,
3) after express highway pavement engineering construction completes, adopt excavator to remove pioneer road, express highway roadbedly carry out brush slope to this section simultaneously, for shape of a saddle pioneer road dismounting and brush the unnecessary earthwork on slope, transport directly in Expressway Central Strip, as greening soil.
Arrange meeting island at described pioneer road outside spacers, meeting island is for outwards to widen 3.5m ~ 4.5m by pioneer road, and the length on meeting island is 8m ~ 10m.
Described shape of a saddle pioneer road top is 5m ~ 10m with the express highway roadbed contour compensation roadbed length flushed, longitudinal grade is 1% ~ 3%, and outside the compensation roadbed two ends of described shape of a saddle pioneer road, eminence is provided with the circular reflective mirror that diameter is 0.8m-1.5m.
Embodiment two: the structure of the present embodiment is substantially identical with embodiment one, something in common no longer repeats, its difference is: described shape of a saddle pioneer road is a series of universal rod body, beret truss, general general rod member or the assembled steel beam column of special rod member, it is according to different express highway roadbed height, determine that shape of a saddle pioneer road needs height and the roadbed side slope of the steel beam column compensating roadbed part, carry out splicing increase and suitably embed roadbed side slope part, in like manner carry out the spreading of slope, two ends steel beam column according to the requirement of longitudinal grade simultaneously and increase.
Described steel beam column end face is the movable road device that an employing U-bolts connects, this movable road device is in advance according to the movable steel suspension bridge bridge deck structure that the principle of steel suspension bridge had been made already, piecemeal, segmentation and piece weight are suitable, be convenient to flexible combination install, uppermost this layer of movable steel suspension bridge bridge floor only first need be laid down when increasing, original steel beam column basis is reinstalled after increasing steel suspension bridge bridge floor part, and so repeatedly operates; Draw slope part steel beam column according to the height calculated in advance and longitudinal grade, with assembled saddle road steel beam column part along connecing.
Claims (8)
1. a speedway shape of a saddle pioneer road process for constructing, is characterized in that, in express highway roadbed one or both sides to be built, carries out building and moves towards identical pioneer road with express highway roadbed; For place speedway being designed with channel design thing, the pioneer road place of its correspondence adopts bionics principle, and build pioneer road by the shape of a saddle, the process for constructing of shape of a saddle pioneer road mainly comprises the following steps:
1) show clearly original ground, flatten, roll some times, then place Min layers fills out simple and easy surface material thereon, leveling is roller-compaction also, forms pioneer road;
2) have in the scope of channel design thing 5 ~ 10m at the corresponding Expressway Design of pioneer road, along with the continuous increase of Subgrade Soils of Expressway side's filled height, each section of pioneer road place of its correspondence all carries out synchronous raising by saddle-shaped configuration, and form overall structure with express highway roadbed main body, draw slope to fill to shape of a saddle pioneer road two ends simultaneously, shape of a saddle pioneer road can be formed thus, in Roadbed Construction process, the compensation roadbed height at shape of a saddle pioneer road top and express highway roadbedly will remain contour along connecing;
3) complete until express highway pavement engineering construction and possess standard and hand over after condition, shape of a saddle pioneer road is removed, express highway roadbedly carry out the process of brush slope to this section simultaneously.
2. speedway shape of a saddle pioneer road process for constructing according to claim 1, is characterized in that, arrange meeting island at described pioneer road outside spacers, meeting island for outwards to widen 3.5m ~ 4.5m again by pioneer road outward flange, the region of long 8m ~ 10m.
3. speedway shape of a saddle pioneer road process for constructing according to claim 1, it is characterized in that, step 2) in, carry out shape of a saddle pioneer road at employing filling method constantly to increase in lifting process, to the surface chipping of shape of a saddle pioneer road Elevated section, and carry out rolling formation temporary construction sidewalk, so repeatedly carry out until express highway roadbed build completes.
4. speedway shape of a saddle pioneer road process for constructing according to claim 3, it is characterized in that, in step 3), excavator is adopted to remove pioneer road and brush slope, for shape of a saddle partial demolition and the unnecessary earthwork of brushing slope, transport directly in Expressway Central Strip, as greening soil.
5. speedway shape of a saddle pioneer road process for constructing according to claim 1, is characterized in that, described shape of a saddle pioneer road top is 5m ~ 10m with the express highway roadbed contour compensation roadbed length flushed, and longitudinal grade is 1% ~ 3%.
6. speedway shape of a saddle pioneer road process for constructing according to claim 1, is characterized in that, outside the compensation roadbed two ends of described shape of a saddle pioneer road, relatively high position place is provided with the circular reflective mirror that diameter is 0.8m-1.5m.
7. speedway shape of a saddle pioneer road process for constructing according to claim 1, it is characterized in that, described shape of a saddle pioneer road is the assembled steel beam column of a series of universal rod body or beret truss, it is according to different express highway roadbed height, determine that shape of a saddle pioneer road needs the height of the steel beam column compensating roadbed part, steel beam column suitably embeds a part in express highway roadbed side slope when carrying out splicing and increasing, in like manner carry out the spreading of slope, two ends steel beam column simultaneously and increase according to the requirement of longitudinal grade.
8. speedway shape of a saddle pioneer road process for constructing according to claim 7, it is characterized in that, described steel beam column end face is the movable road device that an employing U-bolts connects, this movable road device is in advance according to the movable steel suspension bridge bridge deck structure that the principle of steel suspension bridge had been made already, piecemeal, segmentation and piece weight are suitable, be convenient to flexible combination install, uppermost this layer of movable steel suspension bridge bridge floor only first need be laid down when increasing, original steel beam column basis is reinstalled after increasing steel suspension bridge bridge floor part, and so repeatedly operates; Draw slope part steel beam column according to the height calculated in advance and longitudinal grade, with assembled shape of a saddle pioneer road steel beam column part along connecing.
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| CN201410591199.XA CN104278604B (en) | 2014-10-29 | 2014-10-29 | Speedway shape of a saddle pioneer road process for constructing |
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| CN108755310B (en) * | 2018-06-11 | 2020-05-12 | 河南省公路工程试验检测中心有限公司 | Quantitative detection and treatment method for bump at bridge head |
| CN113944107B (en) * | 2021-10-28 | 2023-10-03 | 中铁二十局集团有限公司 | Land short pier bridge roadbed filling type bridge loading channel and construction method thereof |
| CN113944106A (en) * | 2021-10-28 | 2022-01-18 | 中铁二十局集团有限公司 | Steel trestle bridge channel for upper bridge of land short pier bridge and construction method of steel trestle bridge channel |
| CN117005290B (en) * | 2023-08-08 | 2024-03-01 | 北京正坤市政工程有限责任公司 | Assembled steel temporary bridge and construction method thereof |
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| CN100557130C (en) * | 2004-12-07 | 2009-11-04 | 安岗 | Fishhook-type rotary omnidirectional overpass for road |
| CN101363209A (en) * | 2008-07-08 | 2009-02-11 | 张雷 | Technology for preventing bumping at bridge-head |
| CN102720136B (en) * | 2012-05-22 | 2014-06-25 | 中国建筑第六工程局有限公司 | Island and cofferdam construction method for roads, bridges and bearing platforms |
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