CN114855563A - Slip form construction method of auxiliary concrete member - Google Patents
Slip form construction method of auxiliary concrete member Download PDFInfo
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- CN114855563A CN114855563A CN202210650945.2A CN202210650945A CN114855563A CN 114855563 A CN114855563 A CN 114855563A CN 202210650945 A CN202210650945 A CN 202210650945A CN 114855563 A CN114855563 A CN 114855563A
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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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/50—Removable forms or shutterings for road-building purposes; Devices or arrangements for forming individual paving elements, e.g. kerbs, in situ
- E01C19/502—Removable forms or shutterings, e.g. side forms; Removable supporting or anchoring means therefor, e.g. stakes
- E01C19/506—Removable forms or shutterings, e.g. side forms; Removable supporting or anchoring means therefor, e.g. stakes for kerbs, gutters or similar structures, e.g. raised portions, median barriers
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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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- Road Paving Structures (AREA)
Abstract
The invention discloses a slip form construction method of an auxiliary concrete member, which comprises the following steps: the method comprises the following steps of road groove acceptance → transverse drain pipe → longitudinal ditch sliding form → cushion layer → median traffic canalization retaining wall and edge strip foundation sliding form → road shoulder construction → base layer construction → New Jersey guardrail → asphalt layer.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to a slip form construction method of an auxiliary concrete member.
Background
Concrete auxiliary concrete members such as kerbs, longitudinal ditches, median traffic canalization retaining walls, edge strip foundations and the like are indispensable construction parts of construction road sections, mainly play roles in regulating, draining, safety and beautifying traffic, and are indispensable components of modern highways, particularly high-grade highways.
The traditional construction method of the auxiliary concrete member has two modes: one mode is construction by a prefabrication method, and the auxiliary concrete members are transported to a site for installation after being prefabricated; the other mode is a fixed-mold casting method, and after a mold of an attached concrete member is designed, concrete is cast and formed after the fixed-mold is fixed on site; the two modes have the defects of low efficiency, high cost, poor quality and the like.
In the prior art, as shown in fig. 3, the following disadvantages mainly exist for the process flow chart of the auxiliary concrete member construction method: firstly, after the base course is finished, the auxiliary concrete members are subjected to cross construction, and the top surface of the base course is polluted by the aid of road shoulder hilling, mortar for manually installing curbs and the like; secondly, the construction period of the auxiliary concrete member is generally relatively long, which easily causes long construction interval between the top surface of the base layer and the asphalt surface layer and causes overlong exposure time of the top surface of the base layer; thirdly, there is quality risk, because the affiliated concrete member is alternately under construction many, and the cross construction manual consumption is big, takes place the construction confusion phenomenon easily, and influence the construction quality.
Disclosure of Invention
The invention aims to provide a slip form construction method of an auxiliary concrete member, which is used for solving the problem that the auxiliary concrete member is frequently constructed in a crossed manner.
The purpose of the invention can be realized by the following technical scheme:
a slip form construction method of an auxiliary concrete member comprises the following steps:
step one, checking and accepting a road groove: checking and accepting the road slot according to a checking project of JTG F80-2020 road engineering quality checking and evaluating standard;
step two, transverse drainage pipe: constructing and burying a transverse drain pipe before the cushion layer, and winding geotextile at the inlet end of the transverse drain pipe to prevent blockage;
step three, longitudinal ditch slip form: excavating a longitudinal ditch according to construction paying-off, placing walking channel steel on an excavation line and a control pile after excavation is finished, placing a hoisting slip-form machine in place in the longitudinal ditch, hoisting concrete materials to a hopper of the slip-form machine to enter a mould, and continuously vibrating an attached vibrator in the process that the slip-form machine moves along the walking channel steel so that concrete is paved and cast along the shape of the longitudinal ditch;
step four, cushion layer: spreading a mixture meeting the grading requirement of the crushed stone aggregate on the roadbed;
step five, dividing the belt into a traffic canalization retaining wall and an edge strip foundation slip form: slip form construction is respectively carried out on the edge parts and the middle parts of the two sides of the cushion layer, the slip form construction is that concrete is continuously paved and poured through a traveling slip form machine, and the elevation of the middle-belt traffic canalization retaining wall is consistent with that of the top surface poured by the edge strip foundation;
step six, performing road shoulder construction after the median strip traffic canalization retaining wall and the edge strip foundation slip form are completed: the sequence is first layer of hilling and filling construction → curb slipform construction → second layer of hilling and filling construction → greening construction;
step seven, performing base layer construction after the curb slip form construction is completed: the sequence is subbase → lower base → upper base paving construction;
step eight, a new jersey guardrail: constructing and molding the new Jersey guardrail at the middle sub-zone of the upper base layer by a fixed mold pouring method on site;
step nine, an asphalt layer: and constructing an asphalt layer by adopting a layer-by-layer paving method.
As a further scheme of the invention: and in the second step, transverse drain pipes are arranged along the middle sub-belt of the cushion layer every 80-120m, and the transverse drain pipes are 300mm phi HDPE double-wall corrugated pipes.
As a further scheme of the invention: when the longitudinal ditch slip form, the median zone traffic canalization retaining wall, the side strip foundation slip form and the curb slip form are constructed, the mold-entering temperature of concrete is less than or equal to 30 ℃, and the temperature difference between the mold-entering temperature of the concrete and the surface of a pouring medium is 0-15 ℃.
As a further scheme of the invention: the cushion layer meets the relevant requirements of JTGT F20-2015 detail highway pavement base course construction technology, and the measured value of CBR of the cushion layer is more than 80%.
As a further scheme of the invention: the pouring sizes of the median strip traffic canalization retaining wall and the edge strip foundation are both 58cm in height and 23cm in width.
As a further scheme of the invention: and in the sixth step, the compaction degree of the rolling detection of the first layer of hilling filling construction and the second layer of hilling filling construction is more than or equal to 96 percent.
As a further scheme of the invention: pouring cement required by concrete in the curb slip form construction: sand: the weight ratio of crushed stones is 370: 690: 1180.
as a further scheme of the invention: and step seven, paving the middle base layer, the lower base layer and the upper base layer by adopting cement stabilized gravel layers.
As a further scheme of the invention: and eighthly, the pouring strength of the new Jersey guardrail is more than or equal to 20 MPa.
As a further scheme of the invention: and in the step nine, an AC-20C medium particle type asphalt concrete layer, an AC-16C medium particle type modified asphalt concrete layer and an AC-13C fine particle type modified asphalt concrete layer are sequentially paved on the asphalt layer from bottom to top.
The invention has the beneficial effects that:
(1) the base course is carried out after the construction of the curb slip form, thereby avoiding the problems of more crossed construction and disordered management of the auxiliary concrete members and being beneficial to reducing the pollution to the top surface of the base course;
(2) the longitudinal ditch slip form, the middle divided zone traffic canalization retaining wall, the edge strip foundation slip form and the curb slip form have the characteristic of continuous concrete pouring construction, and compared with the traditional prefabrication method construction and on-site fixed mold pouring method construction, the auxiliary concrete member slip form construction can improve construction conditions, reduce labor intensity, accelerate construction progress, save resources and reduce engineering cost;
(3) the construction steps are reasonably distributed, the shoulder construction and the base construction are carried out after the center-divided traffic canalization retaining wall, the edge strip foundation slip form and the curb slip form are finished, the auxiliary concrete members are reasonably planned and distributed for construction, the construction management of the auxiliary concrete members is convenient, and the construction quality is improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a process flow diagram of a slip-form construction method of an auxiliary concrete structure according to the present invention;
FIG. 2 is a schematic cross-sectional view of a construction section of a slipform construction method for an auxiliary concrete structure according to each process of the present invention;
fig. 3 is a process flow diagram of a construction method of an auxiliary concrete structure in the prior art.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention is a slip-form construction method for an auxiliary concrete member, comprising the following steps:
step one, checking and accepting a road groove: checking and accepting the road slot according to a checking project of JTG F80-2020 road engineering quality checking and evaluating standard;
in the technical scheme, the standard of the road groove acceptance is shown in table 1.
TABLE 1 road groove acceptance Standard
Step two, transverse drainage pipe: constructing and burying a transverse drain pipe before the cushion layer, and winding geotextile at the inlet end of the transverse drain pipe to prevent blockage;
in the technical scheme, transverse drain pipes are arranged along the middle sub-belt of the cushion layer at intervals of 80-120m and are HDPE double-wall corrugated pipes with the diameter of 300mm, and the embedding allowable deviation and the inspection method of the transverse drain pipes are shown in table 2.
TABLE 2 horizontal drainpipe burying allowance deviation and inspection method
Step three, longitudinal ditch slip form: excavating a longitudinal ditch according to construction paying-off, placing walking channel steel on an excavation line and a control pile after excavation is finished, placing a hoisting slip-form machine in place in the longitudinal ditch, hoisting concrete materials to a hopper of the slip-form machine to enter a mould, and continuously vibrating an attached vibrator in the process that the slip-form machine moves along the walking channel steel so that concrete is paved and cast along the shape of the longitudinal ditch;
in the present solution, the allowable deviation and inspection method of the slipform cast longitudinal ditch are shown in table 3.
TABLE 3 vertical ditch tolerance deviation and inspection method
Step four, cushion layer: spreading a mixture meeting the grading requirement of the crushed stone aggregate on the roadbed;
in the technical scheme, the cushion layer meets the relevant requirements of JTGT F20-2015 detail for highway pavement base course construction technology, the measured value of CBR of the cushion layer is more than 80%, and the cushion layer inspection items are shown in Table 4.
Table 4 cushion layer examination items
Step five, dividing the belt into a traffic canalization retaining wall and an edge strip foundation slip form: slip form construction is respectively carried out on the edge parts and the middle parts of the two sides of the cushion layer, the slip form construction is that concrete is continuously paved and poured through a traveling slip form machine, and the elevation of the middle-belt traffic canalization retaining wall is consistent with that of the top surface poured by the edge strip foundation;
in the technical scheme, the pouring sizes of the divided-zone traffic canalized retaining wall and the side strip foundation are both 58cm high and 23cm wide, the slip form construction efficiency is improved, and the cost is reduced.
Step six, performing road shoulder construction after the median strip traffic canalization retaining wall and the edge strip foundation slip form are completed: the sequence is first layer of hilling and filling construction → curb slipform construction → second layer of hilling and filling construction → greening construction;
in the technical scheme, the compaction degree of the rolling detection of the first layer of hilling filling construction and the second layer of hilling filling construction is more than or equal to 96 percent.
In the technical scheme, cement required by concrete pouring in the curb slip form construction is as follows: sand: the weight ratio of crushed stones is 370: 690: 1180, the poured kerb is dense and has high strength.
Step seven, performing base layer construction after the curb slip form construction is completed: the sequence is subbase → lower base → upper base paving construction;
in the technical scheme, the underlayer, the lower base layer and the upper base layer are paved by adopting cement stabilized gravel layers, and the inspection items of the underlayer, the lower base layer and the upper base layer are shown in table 5.
TABLE 5 examination items of lower base layer, lower base layer and upper base layer
| Type (B) | Sub-base layer | Lower base layer | Upper base layer |
| Degree of compaction (%) | ≥97 | ≥98 | ≥98 |
| Compressive strength (MPa) | ≥2.0 | ≥3.0 | ≥3.0 |
Step eight, a new jersey guardrail: constructing and molding the new Jersey guardrail at the middle sub-zone of the upper base layer by a fixed mold pouring method on site;
in the technical scheme, the pouring strength of the new Jersey guardrail is more than or equal to 20MPa, when an automobile collides with the new Jersey guardrail, the new Jersey guardrail basically does not move and deform under the action of instant moving load, and energy in the collision process is mainly absorbed by the fact that the automobile contacts with the surface of the new Jersey guardrail and climbs and turns along the surface of the new Jersey guardrail, so that the safety protection effect is achieved.
Step nine, an asphalt layer: and constructing an asphalt layer by adopting a layer-by-layer paving method.
In the technical scheme, an AC-20C medium particle type asphalt concrete layer, an AC-16C medium particle type modified asphalt concrete layer and an AC-13C fine particle type modified asphalt concrete layer are sequentially paved on an asphalt layer from bottom to top, wherein the AC-20C medium particle type asphalt concrete layer has the performances of high-temperature rutting resistance, shearing resistance, compactness and impermeability, and simultaneously has the performance of fatigue cracking resistance; the AC-16C medium-grain modified asphalt concrete layer has the performances of high-temperature rutting resistance, low-temperature cracking resistance and water damage resistance; the AC-13C fine grain type modified asphalt concrete layer has the performances of flatness, firmness, skid resistance and water tightness.
In the technical scheme, when the longitudinal ditch slip form, the median strip traffic canalization retaining wall, the side strip foundation slip form and the curb slip form are constructed, the mold-entering temperature of concrete is less than or equal to 30 ℃, and the temperature difference between the mold-entering temperature of the concrete and the surface of a casting medium is 0-15 ℃, so that the casting quality of the slip form construction is improved.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. A slip form construction method of an auxiliary concrete member is characterized by comprising the following steps:
step one, checking and accepting a road groove: checking and accepting the road slot according to a checking project of JTG F80-2020 road engineering quality checking and evaluating standard;
step two, transverse drainage pipe: constructing and burying a transverse drain pipe before the cushion layer, and winding geotextile at the inlet end of the transverse drain pipe to prevent blockage;
step three, longitudinal ditch slip form: excavating a longitudinal ditch according to construction paying-off, placing walking channel steel on an excavation line and a control pile after excavation is finished, placing a hoisting slip-form machine in place in the longitudinal ditch, hoisting concrete materials to a hopper of the slip-form machine to enter a mould, and continuously vibrating an attached vibrator in the process that the slip-form machine moves along the walking channel steel so that concrete is paved and cast along the shape of the longitudinal ditch;
step four, cushion layer: spreading a mixture meeting the grading requirement of the crushed stone aggregate on the roadbed;
step five, dividing the belt into a traffic canalization retaining wall and an edge strip foundation slip form: slip form construction is respectively carried out on the edge parts and the middle parts of the two sides of the cushion layer, the slip form construction is that concrete is continuously paved and poured through a traveling slip form machine, and the elevation of the middle-belt traffic canalization retaining wall is consistent with that of the top surface poured by the edge strip foundation;
step six, after the median strip traffic canalization retaining wall and the edge strip foundation slip form are completed, road shoulder construction is carried out: the sequence is first layer of hilling and filling construction → curb slipform construction → second layer of hilling and filling construction → greening construction;
step seven, performing base layer construction after the curb slip form construction is completed: the sequence is subbase → lower base → upper base paving construction;
step eight, a new jersey guardrail: constructing and molding the new Jersey guardrail at the middle sub-zone of the upper base layer by a fixed mold pouring method on site;
step nine, an asphalt layer: and constructing an asphalt layer by adopting a layer-paving method.
2. The slip form construction method of an auxiliary concrete member according to claim 1, wherein in the second step, a transverse drain pipe is arranged along the middle belt of the cushion layer every 80-120m, and the transverse drain pipe is a 300mm phi HDPE double-wall corrugated pipe.
3. The slip-form construction method of an auxiliary concrete member according to claim 1, wherein during the slip-form construction of the longitudinal ditch, the center-banded traffic canalization retaining wall, the slip-form construction of the side strip foundation and the slip-form construction of the curb, the mold-entering temperature of the concrete is less than or equal to 30 ℃, and the temperature difference between the mold-entering temperature of the concrete and the surface of the casting medium is 0-15 ℃.
4. The slipform construction method of an appurtenant concrete member according to claim 1, characterized in that the bedding layer meets the requirements of JTGT F20-2015 detailed highway base course construction technology, and the measured value of the CBR of the bedding layer is greater than 80%.
5. The slip-form construction method of an accessory concrete member according to claim 1, wherein the mid-zone traffic canalized retaining wall and the side strip foundation pouring dimensions are 58cm high by 23cm wide.
6. The slip-form construction method of an auxiliary concrete member according to claim 1, wherein the compaction degree of the rolling detection of the first layer of hilling fill construction and the second layer of hilling fill construction in the sixth step is not less than 96%.
7. The slipform construction method of an appurtenant concrete member according to claim 1, characterized in that the concrete required for pouring the concrete in the slipform construction of the curb: sand: the weight ratio of crushed stones is 370: 690: 1180.
8. the slip form construction method of an auxiliary concrete member according to claim 1, wherein in the seventh step, the middle base layer, the lower base layer and the upper base layer are paved by adopting cement stabilized gravel layers.
9. The slip-form construction method of an auxiliary concrete member according to claim 1, wherein the casting strength of the new jersey guardrail in the eighth step is not less than 20 MPa.
10. The slip-form construction method of an auxiliary concrete member according to claim 1, wherein in the ninth step, the asphalt layer is sequentially paved with an AC-20C medium particle type asphalt concrete layer, an AC-16C medium particle type modified asphalt concrete layer and an AC-13C fine particle type modified asphalt concrete layer from bottom to top.
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| CN202210650945.2A CN114855563A (en) | 2022-06-09 | 2022-06-09 | Slip form construction method of auxiliary concrete member |
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| CN202210650945.2A CN114855563A (en) | 2022-06-09 | 2022-06-09 | Slip form construction method of auxiliary concrete member |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628247A (en) * | 2012-04-24 | 2012-08-08 | 天津二十冶建设有限公司 | Insulation construction method for frozen-earth roadbed |
| CN104005313A (en) * | 2014-06-16 | 2014-08-27 | 葛洲坝集团第二工程有限公司 | Construction method for asphalt concrete pavement separation zone kerbs |
| CN108301293A (en) * | 2018-02-06 | 2018-07-20 | 广州市佑安土木工程有限公司 | A kind of construction method of road surface steady layer of water and appurtenant work |
| JP2018178643A (en) * | 2017-04-20 | 2018-11-15 | ケイコン株式会社 | Construction method of structure by slipform construction |
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2022
- 2022-06-09 CN CN202210650945.2A patent/CN114855563A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628247A (en) * | 2012-04-24 | 2012-08-08 | 天津二十冶建设有限公司 | Insulation construction method for frozen-earth roadbed |
| CN104005313A (en) * | 2014-06-16 | 2014-08-27 | 葛洲坝集团第二工程有限公司 | Construction method for asphalt concrete pavement separation zone kerbs |
| JP2018178643A (en) * | 2017-04-20 | 2018-11-15 | ケイコン株式会社 | Construction method of structure by slipform construction |
| CN108301293A (en) * | 2018-02-06 | 2018-07-20 | 广州市佑安土木工程有限公司 | A kind of construction method of road surface steady layer of water and appurtenant work |
Non-Patent Citations (1)
| Title |
|---|
| 包烨明: "路基梯形水沟滑模施工技术研究", 《铁道建筑技术》 * |
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