CN113265921A - Foam light soil roadbed - Google Patents
Foam light soil roadbed Download PDFInfo
- Publication number
- CN113265921A CN113265921A CN202110594069.1A CN202110594069A CN113265921A CN 113265921 A CN113265921 A CN 113265921A CN 202110594069 A CN202110594069 A CN 202110594069A CN 113265921 A CN113265921 A CN 113265921A
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- China
- Prior art keywords
- accommodating space
- soil
- foam
- pouring
- foamed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- E01C3/00—Foundations for pavings
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
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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
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a foam lightweight soil roadbed, which comprises: the pouring frame comprises a bottom plate and four side plates, and the four side plates are perpendicular to the bottom plate and are respectively connected with four side edges of the bottom plate; the cross-shaped plate comprises a horizontal part and a vertical part, the vertical part is clamped between the two opposite side plates and divides the interior of the pouring frame into a first accommodating space and a second accommodating space, the horizontal part is vertically connected to the surface of the vertical part, and foam light soil is respectively poured in the first accommodating space and the second accommodating space and has different densities. The invention reduces the cost of the roadbed and reduces the possibility of settlement in the soft foundation section.
Description
Technical Field
The invention relates to the field of roadbed correlation. More particularly, the invention relates to a foam lightweight soil roadbed.
Background
Roadbed structures should have sufficient strength and stability for safe and smooth operation of vehicles, and in order to meet these requirements, a large amount of high-standard filler is generally required, which has high cost and is prone to sedimentation in soft foundation sections. The foamed lightweight soil is characterized in that closed foam pores are formed inside concrete to lighten the concrete, and the use thereof for a roadbed may overcome the above problems.
Disclosure of Invention
It is an object of the present invention to provide a foamed lightweight soil subgrade which reduces the cost of the subgrade and reduces the likelihood of settlement occurring in soft subgrade sections.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided a foamed lightweight soil subgrade comprising:
the pouring frame comprises a bottom plate and four side plates, and the four side plates are perpendicular to the bottom plate and are respectively connected with four side edges of the bottom plate; the cross-shaped plate comprises a horizontal part and a vertical part, the vertical part is clamped between the two opposite side plates and divides the interior of the pouring frame into a first accommodating space and a second accommodating space, the horizontal part is vertically connected to the surface of the vertical part, and foam light soil is respectively poured in the first accommodating space and the second accommodating space and has different densities.
Furthermore, the two ends of the bottom plate extend outwards to form extension parts, a first groove is formed in the upper surface of the extension part located at one end, a second groove is formed in the lower surface of the extension part located at the other end, and the first groove is matched with the second groove.
Furthermore, through holes are distributed on the surfaces of the horizontal part and the vertical part, and the through hole rate of the horizontal part and the vertical part is not less than 40%.
Further, the preparation method of the foamed lightweight soil comprises the following steps: adding water into cement, fly ash and metakaolin to obtain slurry; taking foaming liquid, and ventilating to obtain a foaming material; and mixing the slurry with a foaming material, and stirring to obtain the foamed light soil.
Furthermore, the density of the foam light soil in the first accommodating space and the density of the foam light soil in the second accommodating space are respectively 500-550 kg/m3And 650 to 700kg/m3。
Furthermore, the first accommodating space and the second accommodating space are the same in volume, two pouring pipes are used for pouring foam light soil into the first accommodating space and the second accommodating space at the same speed, during pouring, a vibrating device is fixed to the top of the vertical portion, and the vibrating device vibrates at the frequency of 200-300 Hz.
Further, still include the bed course, the bed course sets up between ground and the bottom plate.
And further, roadbed fillers are filled between two adjacent pouring frames and compacted.
Further, still include concrete layer and pitch layer, concrete layer with the pitch layer is laid in proper order above foam lightweight soil and road bed filler.
The invention at least comprises the following beneficial effects:
according to the invention, the bottom plate and the side plates form the pouring frame, the pouring frame is divided into a first accommodating space and a second accommodating space by the cross-shaped plates, and two kinds of foam light soil with different densities are poured in the first accommodating space and the second accommodating space. Compared with the direct pouring of the foam light soil, the pouring frame improves the bearing strength, the high-density foam light soil is matched with the low-density foam light soil, the bearing strength of the roadbed is guaranteed, and the cost of the roadbed is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of a casting frame according to the present invention;
fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in FIGS. 1-2, embodiments of the present application provide a foamed lightweight subgrade comprising: the pouring frame 1 comprises a bottom plate 101 and four side plates 102, wherein the four side plates 102 are perpendicular to the bottom plate 101 and are respectively connected with four side edges of the bottom plate 101; the cross-shaped plate 2 comprises a horizontal part 202 and a vertical part 201, the vertical part 201 is clamped between the two opposite side plates 102 and divides the interior of the pouring frame 1 into a first accommodating space and a second accommodating space, the horizontal part 202 is vertically connected to the surface of the vertical part 201, and foam light soil is respectively poured in the first accommodating space and the second accommodating space and has different densities.
In the above embodiment, the bottom plate 101 and the side plates 102 are made of high-strength concrete by casting, and may be prefabricated in the factory or cast in situ, and the bottom plate 101 and the four side plates 102 are connected together to form a channel-shaped casting frame 1. The cross-shaped plate 2 can be made of metal, a pair of opposite, parallel side plates 102 are provided with a clamping groove on the inner side, so that the vertical part 201 of the cross-shaped plate 2 can be clamped conveniently, the pouring frame 1 is divided into a first accommodating space and a second accommodating space, and the horizontal part 202 of the cross-shaped plate 2 extends into the first accommodating space and the second accommodating space respectively. High-density and low-density foam light soil is poured in the first accommodating space and the second accommodating space, and the foam light soil can directly adopt the prior art. It can be seen that in the present embodiment, the bottom plate 101 and the side plates 102 form the casting frame 1, the casting frame 1 is divided into a first accommodating space and a second accommodating space by the cross-shaped plate 2, and two kinds of foam light soil with different densities are cast in the first accommodating space and the second accommodating space, as shown in fig. 2, the foam light soil is marked by different patterns. Compared with a roadbed formed by directly pouring foam light soil, the pouring frame 1 improves the bearing strength, the high-density foam light soil and the low-density foam light soil are alternately distributed and matched, the bearing strength of the roadbed is guaranteed, and the cost of the roadbed is reduced.
In other embodiments, two ends of the bottom plate 101 extend outwards to form an extension, a first groove 103 is formed on the upper surface of the extension at one end, and a second groove 104 is formed on the lower surface of the extension at the other end, and the first groove is matched with the second groove. In these embodiments, a preferred way of laying the foundation is provided, i.e. using a plurality of casting frames 1, which in turn overlap the first and second grooves, improving the integrity of the foundation. The form of the groove and the bulge is not limited, can be determined according to actual needs, and can be matched well.
In other embodiments, through holes are distributed on the surfaces of the horizontal part 202 and the vertical part 201, and the through hole rate of the horizontal part 202 and the vertical part 201 is not less than 40%. In these embodiments, the cross-shaped plate 2 is provided with through holes, so that the two kinds of foamed lightweight soils with different densities and the foamed lightweight soil and the cross-shaped plate 2 can be well fixed together, the bearing capacity of the roadbed is improved, and when the through hole rate is less than 40%, the fixing effect is reduced.
In other embodiments, the method for preparing the foamed lightweight soil includes: adding water into cement, fly ash and metakaolin to obtain slurry; taking foaming liquid, and ventilating to obtain a foaming material; and mixing the slurry with a foaming material, and stirring to obtain the foamed light soil. In these examples, a preferred method of making foamed lightweight soils is provided, with higher strength combinations of cement, fly ash and metakaolin.
In other embodiments, the density of the foamed lightweight soil in the first accommodating space and the density of the foamed lightweight soil in the second accommodating space are respectively 500-550 kg/m3And 650 to 700kg/m3. Foamed light soilThe density can be adjusted by adjusting the mixture ratio of cement, fly ash, metakaolin and foaming liquid, in the embodiments, the preferred density of two foamed light soils is provided, and is 650-700 kg/m3The foamed light soil has high strength, can well assist in pouring the frame 1, improves the bearing capacity of a roadbed, and is 500-550 kg/m3The cost of the foamed light soil is lower, and is 650-700 kg/m3The foamed light soil is matched, so that the bearing strength of the roadbed is guaranteed, and the cost of the roadbed is further reduced.
In other embodiments, the volumes of the first accommodating space and the second accommodating space are the same, two pouring pipes are used for pouring light foam soil into the first accommodating space and the second accommodating space at the same speed, during pouring, a vibrating device is fixed at the top of the vertical portion 201, and the vibrating device vibrates at a frequency of 200 to 300 Hz. And synchronously pouring foam light soil in the first accommodating space and the second accommodating space, so that the foam light soil with two densities is combined with each other at the junction through the through holes and cannot completely enter the other accommodating space. The cross-shaped plate 2 is vibrated by the vibrator so that the two kinds of foamed lightweight soils of different densities near the cross-shaped plate 2 can be sufficiently combined and combined with the cross-shaped plate 2. The vibration frequency of the vibration equipment is not too large easily, excessive mixing of the two foam light soils with different densities is avoided, and the optimal selection is 200-300 Hz.
The present embodiment also includes the following details to better achieve the technical effects. Specifically, the vibration equipment comprises a cylinder, a through groove is formed in the outer wall of the cylinder in the axial direction, the cylinder is clamped with the upper portion of the vertical portion through the through groove, a rotating shaft is arranged in the cylinder in a rotating mode, the rotating shaft is driven by a motor, an eccentric wheel is connected to the rotating shaft, and the eccentric wheel rotates along with the rotating shaft, so that the cylinder vibrates and then drives the vertical portion to vibrate. The vibrating equipment can be well detached from the vertical part and used for the next pouring space.
In other embodiments, the base plate 101 further comprises a cushion layer 3, the cushion layer 3 is arranged between the foundation and the base plate 101, and the cushion layer 3 can be arranged by using the prior art.
In other embodiments, the roadbed filler 6 is filled and compacted between two adjacent pouring frames 1, and a certain gap exists between two adjacent pouring frames 1 due to the extending part, and the two adjacent pouring frames 1 are filled and compacted through sand, slag and the like.
In other embodiments, the concrete layer 4 and the asphalt layer 5 are further included, and the concrete layer 4 and the asphalt layer 5 are sequentially laid above the foamed lightweight soil and the roadbed filling to form the pavement.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. The application, modification and variation of the foamed lightweight soil subgrade of the invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. The foam light soil roadbed is characterized by comprising:
the pouring frame comprises a bottom plate and four side plates, and the four side plates are perpendicular to the bottom plate and are respectively connected with four side edges of the bottom plate;
the cross-shaped plate comprises a horizontal part and a vertical part, the vertical part is clamped between the two opposite side plates and divides the interior of the pouring frame into a first accommodating space and a second accommodating space, the horizontal part is vertically connected to the surface of the vertical part, and foam light soil is respectively poured in the first accommodating space and the second accommodating space and has different densities.
2. A foam lightweight dirt subgrade according to claim 1 wherein said base plate has extensions extending outwardly from each end thereof, a first recess being formed in the upper surface of said extension at one end thereof and a second recess being formed in the lower surface of said extension at the other end thereof, said first recess mating with said second recess.
3. The foamed lightweight dirt subgrade of claim 1 wherein the horizontal and vertical sections have through-holes distributed over their surface, the through-hole ratio of the horizontal and vertical sections being no less than 40%.
4. The foamed lightweight soil subgrade of claim 3, wherein the preparation method of the foamed lightweight soil comprises the following steps: adding water into cement, fly ash and metakaolin to obtain slurry; taking foaming liquid, and ventilating to obtain a foaming material; and mixing the slurry with a foaming material, and stirring to obtain the foamed light soil.
5. The foam lightweight soil roadbed of claim 4, wherein the density of the foam lightweight soil in the first accommodating space and the density of the foam lightweight soil in the second accommodating space are respectively 500-550 kg/m3And 650 to 700kg/m3。
6. The foam lightweight soil roadbed as claimed in claim 3, wherein the first containing space and the second containing space have the same volume, two pouring pipes are used for pouring foam lightweight soil into the first containing space and the second containing space at the same speed, and during pouring, a vibration device is fixed on the top of the vertical part and vibrates at the frequency of 200-300 Hz.
7. A foam lightweight dirt substrate as claimed in claim 3 further including a underlayment disposed between the foundation and said base slab.
8. The foamed lightweight soil subgrade of claim 3, wherein roadbed fillers are filled between two adjacent pouring frames and compacted.
9. The foamed lightweight pavement of claim 8 further comprising a concrete layer and an asphalt layer, said concrete layer and said asphalt layer being laid in sequence over the foamed lightweight soil and the subgrade filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110594069.1A CN113265921B (en) | 2021-05-28 | 2021-05-28 | Foam light soil roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110594069.1A CN113265921B (en) | 2021-05-28 | 2021-05-28 | Foam light soil roadbed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113265921A true CN113265921A (en) | 2021-08-17 |
| CN113265921B CN113265921B (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110594069.1A Active CN113265921B (en) | 2021-05-28 | 2021-05-28 | Foam light soil roadbed |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213151A (en) * | 2022-01-06 | 2022-03-22 | 上海市地江建筑科技有限公司 | Superfine clay-based foam light soil and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207567572U (en) * | 2017-07-03 | 2018-07-03 | 中国铁路总公司 | A kind of Foam lightweight soil railway bed structure |
| CN209838427U (en) * | 2019-03-11 | 2019-12-24 | 中铁二院重庆勘察设计研究院有限责任公司 | Load shedding rectangular frame structure with top plate filled with light material |
| CN110983892A (en) * | 2019-12-25 | 2020-04-10 | 广东冠新建设有限公司 | Foamed light soil and pouring construction process thereof |
| CN211897651U (en) * | 2020-03-04 | 2020-11-10 | 北京中咨华安交通科技发展有限公司 | Roadbed structure in soft soil area |
| CN212077510U (en) * | 2020-03-09 | 2020-12-04 | 中铁第六勘察设计院集团有限公司 | High-speed railway light soil embankment U type groove supporting construction |
-
2021
- 2021-05-28 CN CN202110594069.1A patent/CN113265921B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207567572U (en) * | 2017-07-03 | 2018-07-03 | 中国铁路总公司 | A kind of Foam lightweight soil railway bed structure |
| CN209838427U (en) * | 2019-03-11 | 2019-12-24 | 中铁二院重庆勘察设计研究院有限责任公司 | Load shedding rectangular frame structure with top plate filled with light material |
| CN110983892A (en) * | 2019-12-25 | 2020-04-10 | 广东冠新建设有限公司 | Foamed light soil and pouring construction process thereof |
| CN211897651U (en) * | 2020-03-04 | 2020-11-10 | 北京中咨华安交通科技发展有限公司 | Roadbed structure in soft soil area |
| CN212077510U (en) * | 2020-03-09 | 2020-12-04 | 中铁第六勘察设计院集团有限公司 | High-speed railway light soil embankment U type groove supporting construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213151A (en) * | 2022-01-06 | 2022-03-22 | 上海市地江建筑科技有限公司 | Superfine clay-based foam light soil and preparation method thereof |
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| CN113265921B (en) | 2022-11-01 |
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