CN104711918B - The method with faulting of slab ends is opened at the longitudinal seam of a kind of remedial cement concrete road surface - Google Patents

The method with faulting of slab ends is opened at the longitudinal seam of a kind of remedial cement concrete road surface Download PDF

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Publication number
CN104711918B
CN104711918B CN201510113111.8A CN201510113111A CN104711918B CN 104711918 B CN104711918 B CN 104711918B CN 201510113111 A CN201510113111 A CN 201510113111A CN 104711918 B CN104711918 B CN 104711918B
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CN
China
Prior art keywords
pull bar
longitudinal seam
faulting
cement concrete
slab ends
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Expired - Fee Related
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CN201510113111.8A
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Chinese (zh)
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CN104711918A (en
Inventor
陈达豪
周吴军
易文
肖宏彬
唐成阳
谭利
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Central South University of Forestry and Technology
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Central South University of Forestry and Technology
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Priority to CN201510113111.8A priority Critical patent/CN104711918B/en
Publication of CN104711918A publication Critical patent/CN104711918A/en
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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
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • 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
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/06—Methods of making joints
    • 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
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/14—Dowel assembly ; Design or construction of reinforcements in the area of joints

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Road Repair (AREA)

Abstract

The invention discloses and open the method with faulting of slab ends at the longitudinal seam of a kind of remedial cement concrete road surface, along the direction vertical with longitudinal seam, Cement Concrete Pavement Slab is slotted, after cleaning groove inner concrete and impurity, put into spiral pull bar, the backfill of groove material is filled out in selection, also includes the repairing need to added the faulting of slab ends disease at longitudinal seam.The present invention is a kind of effectively to delay because of the generation of longitudinal seam is wide and faulting of slab ends causes relevant disease and extend the service life of cement concrete pavement, can have the Load-transfer Capacity between efficient recovery longitudinal joint and improve and open the method with faulting of slab ends at the remedial cement concrete road surface longitudinal seam of travel safety.

Description

The method with faulting of slab ends is opened at the longitudinal seam of a kind of remedial cement concrete road surface
Technical field
A kind of method that the present invention relates to remedial cement concrete road surface, particularly relates to one and repaiies Mend the method that cement concrete pavement longitudinal seam opens.
Background technology
Under the common effect of longitudinal seam pull bar disappearance and traffic dynamic load and environmental load When pull bar lost efficacy, easily there are the phenomenons such as flexure increase and purt mud in cement concrete pavement, finally Cause longitudinal seam to open, the disease such as faulting of slab ends and disconnected plate.Open extensive with faulting of slab ends at longitudinal crack It is present in joint cement concrete and Continuous Reinforcement Cement Concrete Pavement, has a strong impact on cement The serviceability of concrete road surface.
Traditional joint filling method for repairing and mending cannot fundamentally solve to open at longitudinal seam and faulting of slab ends Further development.
Summary of the invention
The technical problem to be solved is to provide one and can effectively delay because longitudinally connecing Stitch the generation of the relevant disease that wide and faulting of slab ends causes and extend the use of cement concrete pavement The method with faulting of slab ends is opened at the remedial cement concrete road surface longitudinal seam in life-span.
In order to solve above-mentioned technical problem, the remedial cement concrete road surface that the present invention uses is longitudinally Seam crossing opens the method with faulting of slab ends, along the direction vertical with longitudinal seam to cement-concrete road Panel is slotted, and after cleaning groove inner concrete and impurity, puts into spiral pull bar, selects Fill out the backfill of groove material, also include the repairing that the faulting of slab ends disease at longitudinal seam need to be added, specifically Step is as follows:
Step 1: along the direction fluting vertical with longitudinal seam, remove trough inner water cement concrete, Clear up other loose material, use blasting treatment groove inner surface；
Step 2: reasonably set up pull bar design, places spiral pull bar in groove；
Step 3: fill out groove material and rationally select and backfill；
The repairing step need to added the faulting of slab ends disease at longitudinal seam includes: implement in step 1 Grouting was used to fill up plat-bottom escape in the past；Lead because of faulting of slab ends at milling longitudinal seam after step 3 The out-of-flatness, the overlay concrete material that cause make at faulting of slab ends smooth.
Along the direction fluting vertical with longitudinal seam in described step 1, specific requirement is as follows:
Groove width 50.0mm bigger than pull bar diameter, groove depth is more than the half of road deck thickness 25.0mm, length is as the criterion with the pull bar that can accommodate 1.2m length.
Described step 2 is reasonably set up pull bar design, specific as follows:
The a length of 1.2m of pull bar；
The spiral nominal diameter scope used is: 20.0mm～40.0mm；
Pull bar diameter meets pull bar nominal area of section summation with the spacing arranging pull bar and is more than 825.5mm2Every linear meter(lin.m.) longitudinal seam, clearance between tiebars is not less than 610mm, and pull bar is from coagulating cement Dirt road panel transverse joint is not less than 760mm.
Described step 3 is filled out the basic engineering character that groove material possesses include: low-shrinkage and Setting time is short；Use cement concrete material as filling out groove material, should meet following condition:
The nominal maximum aggregate size that gathers materials is 10mm；
7 days bending tensile strengths and comprcssive strength are respectively 3.93MPa and 24.1MPa；
28 days bending tensile strengths and comprcssive strength are respectively 4.69MPa and 30.3MPa.
Use and open at the remedial cement concrete road surface longitudinal seam of technique scheme and wrong The method of platform, setting up spiral pull bar splicing cement concrete pavement can effectively prevent longitudinal joint from entering One step is opened and recovers longitudinal joint Load-transfer Capacity, can improve traffic safety and strengthen the whole of pavement structure Body；Comparing full degree of depth patch and entire panel is overhauled, fluting sets up the side of spiral pull bar Method is the most economical.Set up spiral pull bar and open with faulting of slab ends as at maintenance longitudinal crack The mode of kind, has preferable economy and two key characters of durability.
Showing according to on-the-spot pavement performance survey data, fluting sets up spiral pull bar remedial cement The durability with faulting of slab ends and serviceability is opened with following at the longitudinal seam of concrete road surface Key factor is closely related: the length of spiral pull bar, diameter and intensity, pull bar mutual Spacing, buried depth, fill out the engineering properties of groove material.
This patent uses field investigation and measurement, determines at longitudinal seam because of adjacent lane panel position The open width moved and produce.Along the direction vertical with longitudinal seam to Cement Concrete Pavement Slab Slot, after cleaning groove inner concrete and impurity, put into spiral pull bar, select suitably Fill out groove material backfill；For the faulting of slab ends disease at longitudinal seam, need to increase fill up plat-bottom escape, The out-of-flatness that causes because of faulting of slab ends at milling longitudinal seam, overlay concrete material and make at faulting of slab ends smooth Deng repairing step.Reasonably pull bar designs and fills out the selection of groove material, can effectively prevent longitudinal joint Open and recover the Load-transfer Capacity of longitudinal joint further.
This method this method has the following advantages:
1, along the direction fluting vertical with longitudinal seam, groove width is bigger than pull bar diameter 50.0mm, the many 25.0mm of half of depth ratio road deck thickness, can realize pull bar and fill out groove material Good combination, it is ensured that pull bar is positioned at thickness of slab centre position, road surface.The method is applicable to various journey The longitudinal seam of degree opens, and work progress is relatively easy.
2, reasonably set up the design of spiral pull bar, a length of 1.2m of pull bar, can guarantee that and draw Bar and the sufficient bond strength filling out groove storeroom, prevent occurring phase para-position between pull bar with pointing Move；Pull bar diameter meets pull bar nominal area of section summation with the spacing arranging pull bar and is more than 825.5mm2Every linear meter(lin.m.) longitudinal seam, it is achieved setting up the effectiveness of pull bar, prevent longitudinal joint enters one The Load-transfer Capacity of longitudinal joint is opened and recovered to step；Clearance between tiebars is not less than 610mm, and pull bar is from cement Concrete flag horizontal boundary is not less than 760mm, prevents between fluting and slots and road deck Local failure occurs between free boundary.
3, use low-shrinkage and setting time short fill out groove material, can realize filling out groove material and The bonds well of Old cement concrete plate, can shorten the time of open to traffic.Compare complete deep Degree patch and entire panel are overhauled, and fluting sets up that the method for spiral pull bar is the rapidest and warp Ji practicality.
4, low-pressure grouting is used can effectively to fill up plat-bottom escape and non-excessive turbulence roadbed；Milling The requirement of minimum-depth, can effectively realize overlaying the good serviceability of concrete material and to mistake Good repair efficiency at platform.
In sum, the present invention is that one can delay effectively because longitudinal seam is wide and faulting of slab ends is led Cause relevant disease generation and extend cement concrete pavement service life, can have efficient recovery Load-transfer Capacity between longitudinal joint and the remedial cement concrete road surface improving travel safety longitudinally connect The method with faulting of slab ends is opened at seam.
Accompanying drawing explanation
Fig. 1 is to set up clearance between tiebars design flow diagram.
Fig. 2 is fluting longitudinal section schematic diagram (unit: mm).
Fig. 3 is fluting joint-cutting schematic diagram.
Fig. 4 is grouting, milling and overlay cement concrete material schematic diagram.
In figure: 1-spiral pull bar；2-cement concrete pavement longitudinal seam；3-fluting is cut Seam；The cement concrete that 4-fluting need to remove；5-groove width；6-milling region；7-overlays Concrete material region (dash area)；8-roadbase；(the grouting of 9-plat-bottom escape region Region).
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
See Fig. 1, Fig. 2, Fig. 3 and Fig. 4, in figure: 1-spiral pull bar；2-cement mixes Solidifying soil surface longitudinal seam；3-slots joint-cutting；The cement concrete that 4-fluting need to remove；5-opens Well width；6-milling region；7-overlays concrete material region (dash area)；8-road Basic unit；9-plat-bottom escape region (grouting region).Along the direction vertical with longitudinal seam to water Cement concrete road deck is slotted, and after cleaning groove inner concrete and impurity, puts into spiral Pull bar, selects to fill out the backfill of groove material, also includes need to adding the faulting of slab ends disease at longitudinal seam Repair, specifically comprise the following steps that
Step 1: along the direction fluting vertical with longitudinal seam, remove trough inner water cement concrete, Clear up other loose material, use blasting treatment groove inner surface；Specific requirement is as follows:
Groove width 50.0mm bigger than pull bar diameter, groove depth is more than the half of road deck thickness 25.0mm, length is as the criterion with the pull bar that can accommodate 1.2m length.
Step 2: reasonably set up pull bar design, places spiral pull bar in groove；Specifically As follows:
The a length of 1.2m of pull bar；
The spiral nominal diameter scope used is: 20.0mm-40.0mm；
Pull bar diameter meets pull bar nominal area of section summation with the spacing arranging pull bar and is more than 825.5mm2Every linear meter(lin.m.) longitudinal seam, clearance between tiebars is not less than 610mm, and pull bar is from coagulating cement Dirt road panel transverse joint is not less than 760mm.
Step 3: fill out groove material and rationally select and backfill: fill out the basic engineering that groove material possesses Matter includes: low-shrinkage and setting time are short；Use cement concrete material as filling out groove material, Should meet following condition:
The nominal maximum aggregate size that gathers materials is 10mm；
7 days bending tensile strengths and comprcssive strength are respectively 3.93MPa and 24.1MPa；
28 days bending tensile strengths and comprcssive strength are respectively 4.69MPa and 30.3MPa.
The repairing step need to added the faulting of slab ends disease at longitudinal seam includes: implement in step 1 Grouting was used to fill up plat-bottom escape in the past；Lead because of faulting of slab ends at milling longitudinal seam after step 3 The out-of-flatness, the overlay concrete material that cause make at faulting of slab ends smooth.
Embodiment 1:
The enforcement of the present invention divides three phases:
First stage is that pull bar scheme is set up in design, a length of 1.2m of pull bar, pull bar diameter and increasing Require if the combination of clearance between tiebars need to meet following three points: a) pull bar nominal area of section summation More than 825.5mm2Every linear meter(lin.m.) longitudinal seam；B) clearance between tiebars is not less than 610mm；C) pull bar From Cement Concrete Pavement Slab horizontal boundary not less than 760mm, set up clearance between tiebars design cycle As shown in Figure 1.To ensure that the repairing method that this patent proposes can effectively prevent the further of longitudinal joint Open and recover the Load-transfer Capacity of longitudinal joint；
Second stage is fluting, and with width as shown in Figures 2 and 3, joint-cutting completes groove depth After, use small-sized electric hand drill or chisel to remove the cement concrete in groove, place pull bar Before, to carrying out blasting treatment in groove and being dried, it is ensured that fill out groove material and Old cement concrete Bonds well.
Phase III is that groove material is filled out in backfill, must ensure that the pull bar set up is in during filler Design attitude, maintenance to conventional can the intensity of open to traffic.
Need to divide with after the phase III before stage 1 for the faulting of slab ends disease at longitudinal seam The repairing step grouting do not added is filled up at plat-bottom escape and milling longitudinal seam because faulting of slab ends causes Out-of-flatness, overlay concrete material and make at faulting of slab ends smooth, grouting, milling and adding are spread concrete Three process schematic of material are as shown in Figure 4.

Claims (4)

1. open the method with faulting of slab ends, edge at the longitudinal seam of remedial cement concrete road surface Cement Concrete Pavement Slab is slotted by the direction vertical with longitudinal seam, coagulation in cleaning groove After soil and impurity, put into spiral pull bar, select to fill out the backfill of groove material, also include longitudinal direction The repairing that the faulting of slab ends disease of seam crossing need to be added, is characterized in that: specifically comprise the following steps that
Step 1: along the direction fluting vertical with longitudinal seam, remove trough inner water cement concrete, Clear up other loose material, use blasting treatment groove inner surface；
Step 2: reasonably set up pull bar design, places spiral pull bar in groove；
Step 3: fill out groove material and rationally select and backfill；
The repairing step need to added the faulting of slab ends disease at longitudinal seam includes: implement in step 1 Grouting was used to fill up plat-bottom escape in the past；Lead because of faulting of slab ends at milling longitudinal seam after step 3 The out-of-flatness, the overlay concrete material that cause make at faulting of slab ends smooth.
Open at the longitudinal seam of remedial cement concrete road surface the most according to claim 1 With the method for faulting of slab ends, it is characterized in that: along the direction vertical with longitudinal seam in described step 1 Fluting, specific requirement is as follows:
Groove width 50.0mm bigger than pull bar diameter, groove depth is more than the half of road deck thickness 25.0mm, length is as the criterion with the pull bar that can accommodate 1.2m length.
At the longitudinal seam of remedial cement concrete road surface the most according to claim 1 and 2 Open the method with faulting of slab ends, it is characterized in that: described step 2 is reasonably set up pull bar design, Specific as follows:
The a length of 1.2m of pull bar；
The spiral nominal diameter scope used is: 20.0mm～40.0mm；
Pull bar diameter meets pull bar nominal area of section summation with the spacing arranging pull bar and is more than 825.5mm2Every linear meter(lin.m.) longitudinal seam, clearance between tiebars is not less than 610mm, and pull bar is from coagulating cement Dirt road panel transverse joint is not less than 760mm.
At the longitudinal seam of remedial cement concrete road surface the most according to claim 1 and 2 Open the method with faulting of slab ends, it is characterized in that: that fills out in described step 3 that groove material possesses is basic Engineering properties includes: low-shrinkage and setting time are short；Use cement concrete material as filling out Groove material, should meet following condition:
The nominal maximum aggregate size that gathers materials is 10mm；
7 days bending tensile strengths and comprcssive strength are respectively 3.93MPa and 24.1MPa；
28 days bending tensile strengths and comprcssive strength are respectively 4.69MPa and 30.3MPa.
CN201510113111.8A 2015-03-16 2015-03-16 The method with faulting of slab ends is opened at the longitudinal seam of a kind of remedial cement concrete road surface Expired - Fee Related CN104711918B (en)

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Publication number Priority date Publication date Assignee Title
CN105507109A (en) * 2016-01-14 2016-04-20 郑州大学 Damaged concrete pavement panel reinforcing structure and method
CN107044080B (en) * 2016-12-07 2019-11-08 华南农业大学 A kind of concrete panel crack steel plate sewing method
CN110004808A (en) * 2019-04-10 2019-07-12 安徽开源路桥有限责任公司 New old road overlap joint reflection crack construction machinery and pavement construction method
CN112726318A (en) * 2020-12-24 2021-04-30 杭州修路人科技股份有限公司 Regeneration and repair method for cement concrete pavement broken plate
WO2023215852A1 (en) * 2022-05-06 2023-11-09 Asphalt Materials, Inc. Method of replacing a longitudinal joint

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DE3008835A1 (en) * 1979-03-30 1980-10-16 Krems Huette Gmbh WEARING LAYER IN THE AREA OF A RUNWAY CEILING AFFECTED BY TRACKING
FR2762635B1 (en) * 1997-04-25 1999-06-04 Jean Michel Larquey PROCESS FOR SEALING JOINTS BETWEEN SELF-LOCKING CONCRETE PAVERS FOR RECEIVING THE APPLICATION OF PAINT LAYERS
CN103526678B (en) * 2013-10-30 2016-06-15 中南林业科技大学 A kind of construction method strengthening joint cement concrete road surface structure intensity

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