CN1490461A - Method for windening old rode terrace by shock compaction - Google Patents
Method for windening old rode terrace by shock compaction Download PDFInfo
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- CN1490461A CN1490461A CNA031569463A CN03156946A CN1490461A CN 1490461 A CN1490461 A CN 1490461A CN A031569463 A CNA031569463 A CN A031569463A CN 03156946 A CN03156946 A CN 03156946A CN 1490461 A CN1490461 A CN 1490461A
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Abstract
Various impact methods for compacting the widened bed of old road and their technological steps are disclosed according to the soil and filled height of the bed. Its advantages are high strnegth of road bed, high load-bearing power and high integral stability.
Description
Technical field
The present invention relates to shock compaction and widen the method for old road embankment.
Background technology
The transformation on old road, upgrading are that road construction often runs into.Now in the specific implementation, the method for employing is to widen the road surface with traditional method for widening, specifically, is that ground begins up to fill from level to level, compacting from widening partly with vibratory roller.The result that this job practices is brought widens between consolidation effect partly and the use old road for many years to certainly exist bigger difference, produces differential settlement, thereby influences the supporting capacity and the resistance to overturning of road.
On the other hand, the appearance of impact densifying-machine and use are widely improving subgrade strength to road construction, reduce the control of roadbed settlement after construction and have brought possibility.As everyone knows, impact densifying-machine with its high amplitude, low-frequency consolidation effect far above the high-frequency of vibration pressure power machine, the consolidation effect of short arc, with 25KJ triangle impact densifying-machine is example, its impact function increases by 10 times than vibratory compactor, compacting influences the degree of depth and reaches 5m, and effectively compacted depth is increased to 1 by the 0.20-0.30m of vibratory compaction, 00-1.50m, and the rolling speed of impact densifying-machine improves twice than vibratory compactor
Summary of the invention
Therefore, the object of the present invention is to provide a kind of shock compaction that can overcome the prior art shortcoming to widen the method for old road embankment.
As everyone knows, old road embankment is widened the soil property that itself is subjected to embankment, the factors of affecting such as height of widening, and therefore, the applicant provides corresponding solution at different factors.
Widen first aspect of the method for old road embankment according to shock compaction of the present invention, it is that height general at soil condition, that widen is not too high, generally is no more than 3m, and its solution comprises the steps:
1. old road embankment one side of widening is put in order, comprise weed a garden, stone etc.;
2. old road embankment one side of widening is from bottom to top scraped out one or more intilted steps.The old road embankment that how much depends on of step is widened a side by the height of roadbed to end face, and the width of step generally is not less than 1m, and the height of step is generally 60-100cm.
3. the step that will scrape out is divided into several layers, and every layer floor height is generally 20cm, and every layer is filled soil identical with former road embankment or that be close, uses the vibratory compactor compacting, before last layer bankets.To each step placement in layers, and fill soil identical with former road embankment or that be close, use soil identical with former road embankment or that be close to mean the soil that soil property is identical with the grating situation or be close at this.So at first guaranteed and the uniformity of old road roadbed, avoided the former roadbed that causes owing to soil property difference and widen the difference on compacting intensity and sedimentation rate that the inconsistency between the part may cause from soil property; Compaction in layers is to provide good basis for subgrade strength; Vibratory compactor is used in compaction in layers, and the one, not the too big good consolidation effect that can guarantee to obtain at the compacting floor height, the 2nd, from economic aspect, have the low advantage of cost.
With impact densifying-machine to the last layer enhancing property ftercompction before banketing.In abovementioned steps, to the step that scrapes out carry out placement in layers, compacting provides good basis for foundation strength, but the angle of widening from whole old road embankment, for guaranteeing to widen the partly supporting capacity after being delivered for use, making it fall heavy rate reduces, must be to the ground enhancing property ftercompction of placement in layers, compacting, the requirement of enhancing property ftercompction is the technical requirements of widening according to old road embankment and the ground of placement in layers, compacting is carried out results measured determine.The ftercompction of enhancing property is not only one deck of the most approaching last layer or which floor to be carried out ftercompction, but to carrying out ftercompction than multilayer, obtain in a big way that the ftercompction of (degree of depth) can only realize with impact densifying-machine, because impact densifying-machine is to be its characteristics with low frequency, high amplitude.
5. last layer is banketed, with vibratory compactor and impact densifying-machine compacting.The result of this step widens old road embankment partly to reach and Jiu Lu road surface basically identical.The Jiu Lu road surface is the use through for many years, because a variety of causes, for example, rolling of vehicle, Jiu Lu road surface and ground have been finished its sedimentation, and with popular words, old road is compacted in long-term use, so use vibratory compactor and impact densifying-machine compacting to widening respectively after partly last layer bankets, in the hope of reaching and Jiu Lu road surface basically identical.
6. will widen embankment and the former road of haveing been friends in the past overlays subbase, basic unit and road surface in the lump, form a new road surface.Said road surface can be a flexible pavement, also can be the rigid pavement.
Widen second aspect of old road embankment according to shock compaction of the present invention, it is under the situation at the general soil property identical with first aspect, but the height of widening is higher, for example surpass 3m, so, its solution can be regarded the extension of first aspect of the present invention as, specifically comprises the steps:
1. old road embankment one side of widening is put in order, comprise weed a garden, stone etc.;
2. old road embankment one side of widening is from bottom to top scraped out one or more intilted steps.The old road embankment that how much depends on of step is widened a side by the height of roadbed to end face, and the width of step generally is not less than 1m, and the height of step is generally 60-100cm;
3. the step that will scrape out is divided into several layers, and every layer is filled soil identical with former road embankment or that be close, uses the vibratory compactor compacting, reaches 3m until the depth of fill;
4. when embankment highly reaches 3m, with the ftercompction of impact densifying-machine enhancing property.As everyone knows, when the depth of fill high more, also high more to the requirement of the compacting intensity of ground.Therefore, according to method of the present invention,, when whenever reaching embankment height 3m, utilize the consolidation effect enhancing property ftercompction of impact densifying-machine, to improve the compacting intensity that oneself becomes ground when whole embankment highly surpasses 3m.
5. repeating step 3,4, before last layer bankets.
6. last layer is banketed, with vibratory compactor and impact densifying-machine compacting.The result of this step widens old road embankment partly to reach and Jiu Lu road surface basically identical.
7. will widen embankment and the former road of haveing been friends in the past overlays subbase, basic unit and road surface in the lump, form a new road surface.Said road surface can be a flexible pavement, also can be the rigid pavement.
Widen the 3rd aspect of old road embankment according to shock compaction of the present invention, it is highly to be no more than 3m at widening, but all soil properties preferably of grating and water content of banketing.Here said " grating of banketing and water content all soil property " preferably is meant better that in this said grating the curve that the shared percentage of native stone granulate size of composition provides is evenly continuous; Said water content better be meant be no more than optimum moisture content ± 2%.Obviously, its soil condition is to be better than aforesaid general soil condition.Corresponding solution comprises the steps:
1. the old road embankment of the side of widening is put in order, comprise weed a garden, stone etc.;
2. from bottom to top scrape out one or more intilted steps along the slope, old roadside of widening this side of road surface, step how much depend on a side that old road embankment widens height to end face, the width of step is not less than 1m, the height of step is generally 60-100cm.
3. the step that will scrape out is divided into several layers, select for use identical with former road embankment or be close, the grating of promptly banketing and water content soil are preferably banketed as widening partly, and the technological parameter of each lift thickness, directly shock compaction is that undisturbed soil is drawn by test.For example, the depth of fill is 80cm, directly uses the impact densifying-machine compacting, repeats abovementioned steps before filling last layer and banketing;
4. before filling last one deck and banketing, with the ftercompction of conflict compacting machine enhancing property.
5. will widen embankment at last and the former road of haveing been friends in the past overlays subbase, basic unit and road surface in the lump, and form a new road surface, described road surface can be a flexible pavement, also can be the rigid pavement.
Aforesaid three aspects all are to widen with one-sided embankment to describe, and should be understood that the present invention is not limited to one-sided embankment and widens, and aforesaid any one aspect is equally applicable to the bilateral embankment and widens.To this, the explanation below by to the 4th aspect will be more readily apparent from.
Widen the 4th aspect of method of old road embankment according to shock compaction of the present invention, it is all need widen at old road bilateral embankment, and old road is a cement concrete pavement.
For having cement concrete pavement, and the processing that the both sides embankment all need be widened comprises two parts, one of be processing to old road, both sides embankment, two are processing to original road surface.The former handles by the solution of one of three aspects, aforesaid first aspect to the of the present invention.Be that example describes with first aspect below, it comprises the steps:
1. two dypass topics is put in order, comprise weed a garden, stone etc.
2. the both sides embankment is scraped out intilted step, the width of step generally is not less than 1m, uses the requirement of vibratory compactor on width to guarantee down-stream, and the height of step is generally 60-100cm.
3. oneself step that scrapes out is divided into several layers, and floor height is generally 20cm, but not limit by this; Select for use identical with old road or water permeability soil preferably, for example, sand grains soil partly bankets as widening; Banket the back with traditional vibratory roller to before widening the embankment placement in layers and being densified to last layer and banketing.
4. with the ftercompction of impact densifying-machine enhancing property, before the ftercompction, the ground of placement in layers, compacting is comprised the test of foundation strength, and according to construction one requirement of widening the road surface, the technical data of punching machine is determined the requirement of ftercompction, as number of rolling;
5. treat that two dypass slopes finish dealing with after the above-mentioned processing, enter the processing to original road surface, at first use shock compaction crusher machine road surface, it is block to make its fracture be net, and whole thickness of slab is run through in the crack, and interlocking is tight between piece and the piece, eliminates plat-bottom escape
6. desire to widen road surface one side, cement concrete pavement and the opposite side embankment is handled finishing, overlay subbase, basic unit and road surface.
Be understood that, disclosed four aspects of applicant, they can be used as different combinations and implement.
The applicant is described in detail design of the present invention and embodiment; the professional and technical personnel can make various conversion and improvement on this basis; but these conversion and improvement all do not break away from spirit of the present invention, all within the protection domain that claims limited.
Claims (5)
1. the method that old road embankment is widened in shock compaction comprises the steps:
(1) puts in order desiring to widen partly, comprise the weeds of removing on the ground, stone etc.;
(2) side that the old road embankment that will widen is widened from bottom to top scrapes out one or more intilted steps;
(3) step that will scrape out is divided into several layers, and every layer is filled soil identical with former road embankment or that be close, uses the vibratory compactor compacting, before last layer bankets;
(4) with impact densifying-machine to the last layer enhancing property ftercompction before banketing;
(5) last layer is banketed, with vibratory compactor and impact densifying-machine compacting;
(6_) will widen embankment and the former road of haveing been friends in the past overlays subbase, basic unit and road surface in the lump, form a new road surface.Said road surface can be a flexible pavement, also can be the rigid pavement.
2. the method that old road embankment is widened in shock compaction comprises the steps:
(1) puts in order desiring to widen partly, comprise the weeds of removing on the ground, stone etc.;
(2) side that the old road embankment that will widen is widened from bottom to top scrapes out one or more intilted steps;
(3) step that will scrape out is divided into several layers, and every layer is filled soil identical with former road embankment or that be close, uses the vibratory compactor compacting, reaches 3m until the depth of fill;
(4) when embankment highly reaches 3m, with the ftercompction of impact densifying-machine enhancing property;
(5) repeating step 3,4, before last layer bankets.
(6) last layer is banketed, with vibratory compactor and impact densifying-machine compacting.The result of this step widens old road embankment partly to reach and Jiu Lu road surface basically identical.
(7) will widen embankment and the former road of haveing been friends in the past overlays subbase, basic unit and road surface in the lump, form a new road surface.Said road surface can be a flexible pavement, also can be the rigid pavement.
3. the method that old road embankment is widened in shock compaction comprises the steps:
(1) partly puts in order widening, comprise the weeds of removing on the ground, stone etc.;
(2) from bottom to top scrape out one or more intilted steps along the slope, old roadside of widening this side of road surface, step how much depend on a side that old road embankment widens height to end face, the width of step is not less than 1m, the height of step is generally 60-100cm.
(3) step that will scrape out is divided into several layers, select for use identical with former road embankment or be close, the grating of promptly banketing and water content soil are preferably banketed as widening partly, each lift thickness is 80cm, directly use the impact densifying-machine compacting, repeat abovementioned steps before filling last layer and banketing;
(4) before filling last one deck and banketing, with the ftercompction of conflict compacting machine enhancing property.
(5) will widen embankment at last and the former road of haveing been friends in the past overlays subbase, basic unit and road surface in the lump, and form a new road surface, described road surface can be a flexible pavement, also can be the rigid pavement.
4. according to the described method of any one claim of claim 1-3, it is characterized in that all widening at the embankment of Jiu Lu both sides.
5. according to the described method of any one claim of claim 1-3, after last layer enhancing property ftercompction, also comprise with shock compaction crusher machine road surface, it is block to make its fracture be net, whole thickness of slab is run through in the crack, and interlocking is tight between piece and the piece, eliminates the step of plat-bottom escape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156946 CN1226487C (en) | 2003-09-15 | 2003-09-15 | Method for windening old rode terrace by shock compaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156946 CN1226487C (en) | 2003-09-15 | 2003-09-15 | Method for windening old rode terrace by shock compaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1490461A true CN1490461A (en) | 2004-04-21 |
| CN1226487C CN1226487C (en) | 2005-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03156946 Expired - Fee Related CN1226487C (en) | 2003-09-15 | 2003-09-15 | Method for windening old rode terrace by shock compaction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359046A (en) * | 2011-07-27 | 2012-02-22 | 河南省交通规划勘察设计院有限责任公司 | High fill subgrade connection method |
| CN102619150A (en) * | 2012-04-26 | 2012-08-01 | 石家庄铁道大学 | Anchored roadbed widening method |
| CN103046446A (en) * | 2013-01-17 | 2013-04-17 | 长沙理工大学 | Highway reconstruction and extension project joint portion treatment structure |
-
2003
- 2003-09-15 CN CN 03156946 patent/CN1226487C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359046A (en) * | 2011-07-27 | 2012-02-22 | 河南省交通规划勘察设计院有限责任公司 | High fill subgrade connection method |
| CN102619150A (en) * | 2012-04-26 | 2012-08-01 | 石家庄铁道大学 | Anchored roadbed widening method |
| CN103046446A (en) * | 2013-01-17 | 2013-04-17 | 长沙理工大学 | Highway reconstruction and extension project joint portion treatment structure |
| CN103046446B (en) * | 2013-01-17 | 2015-12-09 | 长沙理工大学 | Highway reconstruction and extension project joint portion treatment structure |
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| Publication number | Publication date |
|---|---|
| CN1226487C (en) | 2005-11-09 |
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