CN103952957B - Can the roadbase structure of solving problem of vehicle bump at bridge head - Google Patents
Can the roadbase structure of solving problem of vehicle bump at bridge head Download PDFInfo
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- CN103952957B CN103952957B CN201410148272.6A CN201410148272A CN103952957B CN 103952957 B CN103952957 B CN 103952957B CN 201410148272 A CN201410148272 A CN 201410148272A CN 103952957 B CN103952957 B CN 103952957B
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a kind of can the roadbase structure of solving problem of vehicle bump at bridge head, in end of the bridge construction, the roadbase structure be connected with bridge pile foundation is: 1) lower floor of roadbase is by the subbase of foam concrete by displacement method process; 2) upper strata of roadbase is regenerative pervious cement stabilized macadam; The present invention significantly can reduce the sedimentation with highway end of the bridge linking-up road, in addition the intensity of foam concrete reaches more than 2.5MPa, the intensity of regenerative pervious cement stabilized macadam reaches 10MPa, that can guarantee with highway end of the bridge linking-up road is stable, fundamentally solving problem of vehicle bump at bridge head, possesses easy construction, the advantage of economy, environmental protection simultaneously.
Description
Technical field
The present invention relates to a kind of can the roadbase structure of solving problem of vehicle bump at bridge head.
Background technology
Bumping at bridge-head be due to the relative settlement at highway end of the bridge and shrinkage joint (bridge approach) place or shrinkage joint destroy and make road surface longitudinal gradient occur step cause vehicle by time produce the phenomenon of jumping.Rupturing in back filling behind abutment place appearance sedimentation in various degree in road surface, (sedimentation value is generally 10 ~ 30cm, have even more than 60cm), make vehicle by time produce jump and impact, thus additional impact load is caused to bridges and culverts and road surface, driver and passenger is made to feel discomfort of jolting, vehicle is even caused significantly to slow down, serious caused traffic accident (particularly vehicle mechanical accident).Therefore, problem of bumping at bridge-head has become the workmanship of high-grade highway and the important factor in order of cost.Highway bridgehead vehicle jump not only exists on the highway of China, and be also a still unsolved difficult problem abroad, this is due to end of the bridge place: side has pile foundation, and settling amount is less, and opposite side is without pile foundation, and settling amount is larger caused.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of above prior art: provide a kind of easy construction, economy, environmental protection, fundamentally the roadbase structure of solving problem of vehicle bump at bridge head.
Technical solution of the present invention is as follows: a kind of can the roadbase structure of solving problem of vehicle bump at bridge head, in end of the bridge construction, the roadbase structure be connected with bridge pile foundation is:
1) lower floor of roadbase is by the subbase of foam concrete by displacement method process;
2) upper strata of roadbase is regenerative pervious cement stabilized macadam;
Described foam concrete by weight percentage, is prepared from by following raw material:
Raw material 1: aluminium ground-slag 1 ~ 3%, slag powders 20 ~ 30%, water glass 10 ~ 20%, prodan 3 ~ 8%, alkaline residue powder 5 ~ 10%, haydite 35 ~ 55%; Raw material 2: water, the weight of described water is 25 ~ 40% of each component weight in raw material 1;
The concrete preparation method of described foam concrete is: first by aluminium ground-slag, water glass and prodan mix and blend, and then add slag powders, alkaline residue powder, haydite stir evenly, finally above mixture is mixed with water and stirs evenly;
Described regenerative pervious cement stabilized macadam by weight percentage, is prepared from by following raw material:
Raw material 1: alkaline residue powder 3 ~ 5%, Alive Building garbage regeneration powder 12 ~ 16%, steel-making slag powder 18 ~ 25%, Admixture 0.5 ~ 1.5%, recycled cement stabilization gravel gathers materials 55 ~ 65%; Raw material 2: water, the weight of described water is 25 ~ 40% of each component weight in raw material 1;
The concrete preparation method of described regenerative pervious cement stabilized macadam is: first alkaline residue powder, Alive Building garbage regeneration powder, steel-making slag powder and Admixture are mixed, and then gathers materials with recycled cement stabilization gravel and stir, and finally adds water and stirs evenly;
Described aluminium ground-slag be aluminium electrolysis enterprise containing aluminium solid waste by the aluminium ground-slag of ball milling.
Described alkaline residue powder is the alkaline residue powder being utilized the solid waste ball milling produced in ammonia-soda process soda ash process by alkaline enterprise.
Described Alive Building garbage regeneration powder is formed by ball milling after construction refuse regenerated powder activation process.
Described construction refuse regenerated powder is the powder byproduct that the grain graininess produced in production reclaimed concrete aggregate process is less than 0.3mm.
Described Admixture be silicate, aluminate, triethanolamine, aluminium sulfate one or more.
The silicate of soda modulus of described water glass is 2.4.
It is that the waste cement stabilization gravel fragmentation produced by orcible entry road forms that described recycled cement stabilization gravel gathers materials.
It is that in road reconstruction process, roadbed material is the gravel particle of 5 ~ 15mm through the particle diameter of fragmentation that described recycled cement stabilization gravel gathers materials.
The invention has the beneficial effects as follows: the unit weight of the foamed concrete material that the present invention adopts is about 25% of traditional material, the unit weight of the regenerative pervious Cement Treated Material of roadbase is about 70% of conventional cement stabilization gravel or fly ash lime stabilized crushed rock material, significantly can reduce the sedimentation with highway end of the bridge linking-up road, in addition the intensity of foam concrete reaches more than 2.5MPa, the intensity of regenerative pervious cement stabilized macadam reaches 10MPa, that can guarantee with highway end of the bridge linking-up road is stable, fundamentally solving problem of vehicle bump at bridge head, possesses easy construction simultaneously, economical, the advantage of environmental protection.
Detailed description of the invention
With specific embodiment, the present invention is described in further details below, but the present invention is not only confined to following specific embodiment.
Embodiment one
In end of the bridge construction, the roadbase structure be connected with bridge pile foundation is:
1) lower floor of roadbase is by the subbase of foam concrete by displacement method process, and namely earth roadbed employing foam concrete displacement soil is as the subbase of the road be connected with bridge pile foundation, and displacement thickness is greater than 2000mm; Wherein the unit weight of foam concrete is the 25%-35% of soil.
2) upper strata of roadbase is regenerative pervious cement stabilized macadam, adopt regenerative pervious cement stabilized macadam as the basic unit of the road be connected with bridge pile foundation on the subbase of i.e. roadbase, construction technology is the same with traditional cement stabilized macadam, but must reach more than 1.5MPa in foam concrete intensity and could construct;
The unit weight of regenerative pervious cement stabilized macadam is the 60%-70% of cement stabilized macadam or fly ash lime stabilized crushed rock.
Described foam concrete by weight percentage, is prepared from by following raw material:
Raw material 1: aluminium ground-slag 1 ~ 3%, slag powders 20 ~ 30%, water glass 10 ~ 20%, prodan 3 ~ 8%, alkaline residue powder 5 ~ 10%, haydite 35 ~ 55%; Raw material 2: water, the weight of described water is 25 ~ 40% of each component weight in raw material 1;
The concrete preparation method of described foam concrete is: first by aluminium ground-slag, water glass and prodan mix and blend, and then add slag powders, alkaline residue powder, haydite stir evenly, finally above mixture is mixed with water and stirs evenly;
Described regenerative pervious cement stabilized macadam by weight percentage, is prepared from by following raw material:
Raw material 1: alkaline residue powder 3 ~ 5%, Alive Building garbage regeneration powder 12 ~ 16%, steel-making slag powder 18 ~ 25%, Admixture 0.5 ~ 1.5%, recycled cement stabilization gravel gathers materials 55 ~ 65%; Raw material 2: water, the weight of described water is 25 ~ 40% of each component weight in raw material 1;
The concrete preparation method of described regenerative pervious cement stabilized macadam is: first alkaline residue powder, Alive Building garbage regeneration powder, steel-making slag powder and Admixture are mixed, and then gathers materials with recycled cement stabilization gravel and stir, and finally adds water and stirs evenly;
Described aluminium ground-slag be aluminium electrolysis enterprise containing aluminium solid waste by the aluminium ground-slag of ball milling.
Described alkaline residue powder is the alkaline residue powder being utilized the solid waste ball milling produced in ammonia-soda process soda ash process by alkaline enterprise.
Described Alive Building garbage regeneration powder is formed by ball milling after construction refuse regenerated powder activation process.
Described construction refuse regenerated powder is the powder byproduct that the grain graininess produced in production reclaimed concrete aggregate process is less than 0.3mm.
Described Admixture be silicate, aluminate, triethanolamine, aluminium sulfate one or more.
The silicate of soda modulus of described water glass is 2.4.
It is that in road reconstruction process, roadbed material is the gravel particle of 5 ~ 15mm through the particle diameter of fragmentation that described recycled cement stabilization gravel gathers materials.
Wherein the concrete preparation method (can refer to patent CN102838302A) of Alive Building garbage regeneration powder is: (1) first, construction refuse regenerated powder particle diameter being less than 0.36mm mixes with lime mechanical activation and mechanical lapping, wherein lime intermingled quantity be mixed material gross weight 5% ~ 15%, remaining as construction refuse regenerated powder, at room temperature grinding obtains the powder that fineness is less than 0.075mm;
(2) powder after step (1) mechanical activation is placed in sodium aluminosilicate solution and soaks 18 ~ 30 hours, dry, be heated to 900 ~ 950 DEG C again, be incubated 2 ~ 5 hours, then naturally cool to room temperature;
(3) be 1:0.8 ~ 1.5 normal temperature mixed grindings by step (2) cooled material and slag powders with weight ratio, the specific area being ground to mixed material meets and is greater than 450m
2/ kg.
Described sodium aluminosilicate solution is sodium silicoaluminate saturated solution.
As preferably, described sodium silicoaluminate saturated solution is mass percent is that 5 ~ 15% sodium aluminosilicate solutions and zeolite powder are mixed to the saturated mixed solution of zeolite powder.
Embodiment two
In end of the bridge construction, the roadbase structure be connected with bridge pile foundation is:
1) lower floor of roadbase is by the subbase of foam concrete by displacement method process, and namely earth roadbed (soil matrix) is by the subbase of foam concrete soil replacement method displacement soil as the road be connected with bridge pile foundation, and displacement soil thickness is greater than 2000mm;
2) upper strata of roadbase is regenerative pervious cement stabilized macadam, namely, after foam concrete intensity reaches more than 1.5MPa, regenerative pervious cement stabilized macadam on the subbase of roadbase, is adopted to be obtained the basic unit of the road be connected with bridge pile foundation by the construction technology the same with traditional cement stabilized macadam;
Described foam concrete by weight percentage, is prepared from by following raw material:
Raw material 1: aluminium ground-slag 3%, slag powders 25%, water glass 17%, prodan 6%, alkaline residue powder 8%, haydite 41%; Raw material 2: water, the weight of described water is 35% of each component weight in raw material 1;
Prepare foam concrete as follows: first by aluminium ground-slag, water glass and prodan mix and blend, and then add slag powders, alkaline residue powder, haydite stir evenly, finally above mixture is mixed with water and stirs evenly;
Described regenerative pervious cement stabilized macadam by weight percentage, is prepared from by following raw material:
Raw material 1: alkaline residue powder 3%, Alive Building garbage regeneration powder 16%, steel-making slag powder 21%, triethanolamine 1%, recycled cement stabilization gravel gathers materials 59%; Raw material 2 is the water of 40% of each component weight in raw material 1;
The concrete preparation method of described regenerative pervious cement stabilized macadam is: first alkaline residue powder, Alive Building garbage regeneration powder, steel-making slag powder and Admixture are mixed, and then gathers materials with recycled cement stabilization gravel and stir, and finally adds water and stirs evenly;
Described aluminium ground-slag be aluminium electrolysis enterprise containing aluminium solid waste by the aluminium ground-slag of ball milling.
Described alkaline residue powder is the alkaline residue powder being utilized the solid waste ball milling produced in ammonia-soda process soda ash process by alkaline enterprise.
Described Alive Building garbage regeneration powder is formed by ball milling after construction refuse regenerated powder activation process.
Described construction refuse regenerated powder is the powder byproduct that the grain graininess produced in production reclaimed concrete aggregate process is less than 0.3mm.
The silicate of soda modulus of described water glass is 2.4.
It is that in road reconstruction process, roadbed material is the gravel particle of 5 ~ 15mm through the particle diameter of fragmentation that described recycled cement stabilization gravel gathers materials.
Wherein the concrete preparation method (can refer to patent CN102838302A) of Alive Building garbage regeneration powder is: (1) first, construction refuse regenerated powder particle diameter being less than 0.36mm mixes with lime mechanical activation and mechanical lapping, wherein lime intermingled quantity be mixed material gross weight 5% ~ 15%, remaining as construction refuse regenerated powder, at room temperature grinding obtains the powder that fineness is less than 0.075mm;
(2) powder after step (1) mechanical activation is placed in sodium aluminosilicate solution and soaks 18 ~ 30 hours, dry, be heated to 900 ~ 950 DEG C again, be incubated 2 ~ 5 hours, then naturally cool to room temperature;
(3) be 1:0.8 ~ 1.5 normal temperature mixed grindings by step (2) cooled material and slag powders with weight ratio, the specific area being ground to mixed material meets and is greater than 450m
2/ kg.
Described sodium aluminosilicate solution is sodium silicoaluminate saturated solution.
As preferably, described sodium silicoaluminate saturated solution is mass percent is that 5 ~ 15% sodium aluminosilicate solutions and zeolite powder are mixed to the saturated mixed solution of zeolite powder.
The present embodiment sample and traditional material performance comparison as follows:
Foam concrete performance
| Title | Dry density kg/m 3 | 28d compressive strength MPa |
| Foam concrete | 553.3 | 2.84 |
| Cement-soil | 2231.5 | 1.23 |
Regenerative pervious cement stabilized macadam
| Title | Unit weight kg/m 3 | 28d compressive strength MPa |
| Regenerative pervious cement stabilized macadam | 1135.3 | 11.8 |
| Cement stabilized macadam | 1868.0 | 4.2 |
Claims (7)
1. can the roadbase structure of solving problem of vehicle bump at bridge head, it is characterized in that: in end of the bridge construction, the roadbase structure be connected with bridge pile foundation is:
1) lower floor of roadbase is by the subbase of foam concrete by displacement method process;
2) upper strata of roadbase is regenerative pervious cement stabilized macadam;
Described foam concrete by weight percentage, is prepared from by following raw material:
Raw material 1: aluminium ground-slag 1 ~ 3%, slag powders 20 ~ 30%, water glass 10 ~ 20%, prodan 3 ~ 8%, alkaline residue powder 5 ~ 10%, haydite 35 ~ 55%; Raw material 2: water, the weight of described water is 25 ~ 40% of each component weight in raw material 1;
The concrete preparation method of described foam concrete is: first by aluminium ground-slag, water glass and prodan mix and blend, and then add slag powders, alkaline residue powder, haydite stir evenly, finally above mixture is mixed with water and stirs evenly;
Described regenerative pervious cement stabilized macadam by weight percentage, is prepared from by following raw material:
Raw material 1: alkaline residue powder 3 ~ 5%, Alive Building garbage regeneration powder 12 ~ 16%, steel-making slag powder 18 ~ 25%, Admixture 0.5 ~ 1.5%, recycled cement stabilization gravel gathers materials 55 ~ 65%; Raw material 2: water, the weight of described water is 25 ~ 40% of each component weight in raw material 1;
The concrete preparation method of described regenerative pervious cement stabilized macadam is: first alkaline residue powder, Alive Building garbage regeneration powder, steel-making slag powder and Admixture are mixed, and then gathers materials with recycled cement stabilization gravel and stir, and finally adds water and stirs evenly.
2. according to claim 1 a kind of can the roadbase structure of solving problem of vehicle bump at bridge head, it is characterized in that: described aluminium ground-slag be aluminium electrolysis enterprise containing the aluminium ground-slag of aluminium solid waste by ball milling.
3. according to claim 1 a kind of can the roadbase structure of solving problem of vehicle bump at bridge head, it is characterized in that: described alkaline residue powder is the alkaline residue powder being utilized the solid waste ball milling produced in ammonia-soda process soda ash process by alkaline enterprise.
4. according to claim 1 a kind of can the roadbase structure of solving problem of vehicle bump at bridge head, it is characterized in that: described Alive Building garbage regeneration powder is formed by ball milling after construction refuse regenerated powder activation process.
5. according to claim 4 a kind of can the roadbase structure of solving problem of vehicle bump at bridge head, it is characterized in that: described construction refuse regenerated powder is produce the powder byproduct that the grain graininess produced in reclaimed concrete aggregate process is less than 0.3mm.
6. according to claim 1 a kind of can the roadbase structure of solving problem of vehicle bump at bridge head, it is characterized in that: it is that the waste cement stabilization gravel fragmentation produced by orcible entry road forms that described recycled cement stabilization gravel gathers materials.
7. according to claim 1 a kind of can the roadbase structure of solving problem of vehicle bump at bridge head, it is characterized in that: described Admixture be silicate, aluminate, triethanolamine, aluminium sulfate one or more.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410148272.6A CN103952957B (en) | 2014-04-15 | 2014-04-15 | Can the roadbase structure of solving problem of vehicle bump at bridge head |
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| CN201410148272.6A CN103952957B (en) | 2014-04-15 | 2014-04-15 | Can the roadbase structure of solving problem of vehicle bump at bridge head |
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| CN103952957B true CN103952957B (en) | 2016-02-10 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104328780A (en) * | 2014-09-15 | 2015-02-04 | 浙江省嘉维交通科技发展有限公司 | Treatment method for settlement behind bridge abutment |
| CN105696465A (en) * | 2014-11-25 | 2016-06-22 | 任丘市永基建筑安装工程有限公司 | Bridgehead ramp and road connection technique |
| CN105200879B (en) * | 2015-10-16 | 2017-07-28 | 北京科技大学 | A kind of permeable foam concrete pile composite foundation |
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| CN2501908Y (en) * | 2000-06-14 | 2002-07-24 | 荆学松 | High earth-filled road-bed stage back capable of preventing vehicle vibration on bridge head |
| RU2381324C2 (en) * | 2008-04-02 | 2010-02-10 | Государственное образовательное учреждение высшего профессионального образования "Пензенский государственный университет" (ПГУ) | Road reconstruction and strengthening method |
| CN102041759A (en) * | 2010-11-26 | 2011-05-04 | 合肥工业大学科教开发部 | Transition roadway for managing bumping at bridge-head |
| CN102979021A (en) * | 2012-11-21 | 2013-03-20 | 邢台路桥建设总公司 | Construction method for treating vehicle jump at bridge head in highway |
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2014
- 2014-04-15 CN CN201410148272.6A patent/CN103952957B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| CN2501908Y (en) * | 2000-06-14 | 2002-07-24 | 荆学松 | High earth-filled road-bed stage back capable of preventing vehicle vibration on bridge head |
| RU2381324C2 (en) * | 2008-04-02 | 2010-02-10 | Государственное образовательное учреждение высшего профессионального образования "Пензенский государственный университет" (ПГУ) | Road reconstruction and strengthening method |
| CN102041759A (en) * | 2010-11-26 | 2011-05-04 | 合肥工业大学科教开发部 | Transition roadway for managing bumping at bridge-head |
| CN102979021A (en) * | 2012-11-21 | 2013-03-20 | 邢台路桥建设总公司 | Construction method for treating vehicle jump at bridge head in highway |
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