CN107059536B - A kind of new-to-old concrete interface bar planting adhesive method - Google Patents
A kind of new-to-old concrete interface bar planting adhesive method Download PDFInfo
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- CN107059536B CN107059536B CN201710280953.1A CN201710280953A CN107059536B CN 107059536 B CN107059536 B CN 107059536B CN 201710280953 A CN201710280953 A CN 201710280953A CN 107059536 B CN107059536 B CN 107059536B
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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
- E01C11/06—Methods of making joints
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- Piles And Underground Anchors (AREA)
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Abstract
The invention discloses a kind of new-to-old concrete interface bar planting adhesive methods, comprising the following steps: (1) checks substrate concrete quality: the substrate concrete surface to strength grade not less than C20 carries out dabbing processing；(2) carry out dabbing treated substrate concrete to surface and carry out bar planting construction: snap the line positioning, borehole cleaning, injecting glue, bar planting, is inspected for acceptance at drilling；(3) novel concrete is poured.This method by the distance between two neighboring bar planting center, the anchorage depth of bar planting, bar planting position edge at a distance from substrate concrete edge, the parameters such as the relationship of bore diameter and bar planting diameter are reasonably optimized, reach and improves Mechanics Performance of Adherence of New intensity, improve stress performance, limit the relative displacement of new-to-old concrete interface, improve anti-shear ability, it effectively controls the track of novel concrete, gather around the diseases such as packet and reflection crack, the purpose to prolong the service life.
Description
Technical field
The present invention relates to the reinforcing of cement concrete pavement and maintenance field, specifically a kind of new-to-old concrete interface bar plantings
Adhesive method.
Background technique
In recent years, concrete is widely used in civil construction project and road engineering neck with its excellent engineering characteristic
Domain.Under natural environment and human activity effect, there is a large amount of concrete structure that different journeys have occurred every year in world wide
The aging and damage of degree；It is especially extremely extensive in China's concrete structure use, since design, construction and maintenance are improper, i.e.,
Make newly-built concrete structure, also will appear honeycomb, cavity, crack or even the diseases such as collapse, to seriously affect structure just
It is often used, greatly shortens the service life of structure.Investigation display: the adhesion strength on concrete binding face can be reduced constantly,
Reach its critical value used after 17~20 years；After using 18 years, the concrete topping in structure only has one bridge block
10% adhesion strength is intact, and 20% is weakened, and 70% adhesion strength completely lost.
In order to not influence structure normal use and guarantee the service life of structure, by technological means to concrete structure
It carries out reinforcement and reinforces just at current urgent problem to be solved.And the key of success repairing and reinforcing is that New-old concrete
In conjunction with the binding performance of the two directly determines reinforcement and the strengthening quality of concrete structure.For the broken of road and bridge pavement
It damages, rejecting breakage, loose concrete is proposed in engineering, pours the method for repairing and mending of new finishing coat.However, in natural environment and lotus
Under load effect, complicated stress is presented in binder course after repairing.For example, thermal gradient, drying and watering cycle, the Frozen-thawed cycled the effects of
Under, repairing faying face nearby often generates biggish thermal stress and shrinkage stress.In addition, due to New-old concrete contraction not
Consistent and thermal gradient effect, faying face nearby will form tensile stress and shear stress, in subsequent serviceability limit stage, faying face
It will form compression and shear stress again.This has all greatly accelerated the breakdown speed of bond between fresh and hardened concretes layer, causes repairing and reinforcing
Failure.Facts have proved: the road surface that tradition is repaired by cohesive force between New-old concrete, new-to-old concrete interface intensity is lower,
Durability is poor, under normal use environment and Driving Loading, can destroy again quickly.
Because concrete structure is more complicated in use process stress, the simple combination between new-to-old concrete interface is purely relied on
Come achieve the purpose that reinforcement and reinforced concrete be it is difficult to realize, this is because the cohesive force that can be provided between the two interface compared with
It is small.In order to improve the cohesive force of faying face, in addition to outer to the processing of old concrete surface dabbing, mixing after treatment is also widely used
The methods of coagulate soil surface smearing chemical interface agent, concrete net slurry, directly pour special concrete, configuration shear reinforcement.Pass through
Engineering practice can obtain, and new-old concrete bonding can obtain better bearing capacity and using effect using bar planting processing mode.
Domestic and foreign scholars had carried out many researchs to Mechanics Performance of Adherence of New performance in recent years.In New-old concrete joint surface, reinforcing bar is set
Opening displacement of the connector to limit faying face increases adhesion strength, solves New-old concrete in structural strengthening reinforcement
Reliable bond problem.However, the method for reinforcing New-old concrete joint surface using bar planting processing mode there is no molding calculating
Theoretical and job specfication.The factor for influencing steel concrete supporting performance is more, and each factor is especially less to the quantitative analysis of performance,
This limits steel concrete supporting part to a certain extent and uses in practice.
Summary of the invention
In view of the deficiencies of the prior art, the technical issues of present invention intends to solve is to provide a kind of new-to-old concrete interface plant
Muscle adhesive method.This method passes through to the distance between two neighboring bar planting center, the anchorage depth of bar planting, bar planting position edge
With at a distance from substrate concrete edge, the parameters such as the relationship of bore diameter and bar planting diameter carry out reasonable optimization to reach raising new
The purpose of old concrete adhesion strength.
The technical solution that the present invention solves the technical problem is to provide a kind of new-to-old concrete interface bar planting bonding side
Method, it is characterised in that the following steps are included:
(1) it checks substrate concrete quality: substrate concrete surface of the strength grade not less than C20 is carried out at dabbing
Reason, makes its roughness 2.5-4mm；
(2) dabbing treated substrate concrete is carried out to surface and carries out bar planting construction:
A. snap the line positions: substrate concrete is upper along its length to rotate 60 ° of progress snap the line, then opposite direction along its length
It rotates 60 ° of degree and carries out snap the line, two oblique line intersection areas, the as bore position of bar planting；Bore position distribution in equilateral triangle,
The distance between two neighboring bore position center 6d <≤min (30d, 500mm)；Bore position edge and substrate concrete edge
Distance >=max (5d, 100mm) of edge；D indicates bar planting diameter；The bar planting diameter d >=10mm；
B. drill: according to bore position, drilling obtains bar planting hole；Drilling depth, that is, bar planting anchorage depth meets: max
(12d, 150mm)≤drilling depth≤B-max (5d, 50mm)；B is the thickness of substrate concrete；
The relationship of bore diameter D and bar planting diameter d meets: d≤16mm, D >=d+4mm；16mm < d≤25mm, D >=d+
6mm；D > 25mm, D >=d+8mm；
C. borehole cleaning: after a structural plane of substrate concrete is completed in drilling, borehole cleaning operation is carried out；
D. match glue: reinforcing bar should thoroughly remove surface attachments, floating rust and greasy dirt before with glue, reach bar planting and prepare to require；
Guarantee that drilling, borehole cleaning work are completed；Anchoring adhesive mixture is obtained with glue；
E. injecting glue: anchoring adhesive mixture is injected in bar planting hole, and injection rate occurs to be implanted into anchoring adhesive mixture after reinforcing bar
Subject to the phenomenon that being extruded；
F. bar planting: bar planting is carried out immediately after the completion of injecting glue；
G. inspect for acceptance: anchoring adhesive mixture carries out pull-out test after being fully cured；Using nondestructive test, test value
Reach off-load after design requirement；
(3) novel concrete is poured.
The method for pouring novel concrete is cleaning old concrete interface, and interface is made to keep clean wet；In substrate concrete
It smears one layer of cement paste or interfacial agents and then pours novel concrete with a thickness of 3~6mm in surface；Novel concrete intensity requirement
A grade higher than substrate concrete strength；It is conserved after the completion of pouring.
When drilling, using the impact drilling, impact drill is uniformly pierced perpendicular to substrate concrete surface, to control drilling
Depth.
The operating method of injecting glue is: pulling the pull rod of hand-held automatic pressure filling device, the anchoring adhesive mixture that will be prepared
The capsula interna for sucking filling device protrudes into the gluing nozzle of filling device in bar planting hole it is noted that excluding the air in bar planting hole when injecting glue,
Pushing drawing rod makes to pull out filling device to outside hole in push-pull rod in anchoring adhesive mixture injection hole, until the gluing nozzle of filling device is taken out
Stop injecting glue when out to from 1/3 hole depth of aperture, injection rate is to be implanted into the phenomenon that anchoring adhesive mixture after reinforcing bar is extruded
It is quasi-；After the completion of anchoring adhesive mixture injecting glue, the sleeve of filling device, the spring of filling device and pull rod are cleaned up with acetone.
After the completion of the specific method of bar planting is injecting glue, reinforcing bar is implanted into anchoring adhesive mixture on the libation at an ancient wedding ceremony of end, is inserted into bar planting hole；
Insertion edge same direction rotation in side is wanted when operation, so that anchoring adhesive mixture and reinforcing bar and bar planting hole wall surface bonding are closely knit；
Reinforcing bar will be inserted into bar planting hole duct bosom, not disturb bar planting before the deadline under room temperature.
Compared with prior art, the beneficial effects of the invention are that:
(1) this method reinforcing and repairing substrate concrete by the way of plant anchor can effectively enhance the old and new's coagulation
The adhesive property of soil improves stress performance, limits the relative displacement of new-to-old concrete interface, anti-shear ability is strong, Neng Gouyou
The track of effect ground control novel concrete gathers around the diseases such as packet and reflection crack, prolongs the service life.
At load initial stage, the shear-carrying capacity of New-old concrete is mainly that the bonding of New-old concrete undertakes, main bounded
Van der Waals force, mechanical snap power and chemical interactions in the transition zone of face undertake.With the increase of load, between New-old concrete
After cohesive force reaches capacity, adhesiving force destruction between New-old concrete simultaneously causes relative displacement between New-old concrete joint surface
Trend.Since old concrete surface becomes coarse after dabbing, when novel concrete surface is sent out on coarse old concrete surface
When raw opposite changing of the relative positions trend, cause the displacement trend for being parallel to adhesive surface and the displacement trend perpendicular to adhesive surface, the latter causes
Implantation reinforcing bar between New-old concrete joint surface generates tensile stress, and reinforcing bar tensile stress makes to generate friction between New-old concrete joint surface
Power is parallel to the sliding of adhesive surface to resist, meanwhile, implantation reinforcing bar is played also subject to the shearing between faying face, i.e. implantation reinforcing bar
Dowel action.Therefore, in the case of bar planting New-old concrete bonding, including the Mechanics Performance of Adherence of New and plant in the case of no bar planting
Enter bonding two parts of New-old concrete caused by reinforcing bar.Implantation reinforcing bar causes in the active force between New-old concrete, frictional force
Be converted to the drawing-resistant function of implantation reinforcing bar；Dowel action is ultimately converted to the tension effect of implantation reinforcing bar, therefore, after being implanted into reinforcing bar
The cohesive force size of New-old concrete is finally determined by the tension force value of implantation reinforcing bar.
(2) the triangular pitch mode of bar planting is more uniformly stressed concrete, can be effectively improved the position only in bar planting
It sets that place's stress is larger and the lesser phenomenon of stress at non-bar planting position, improves the shearing strength of Mechanics Performance of Adherence of New, Neng Gouyou
Effect inhibits the development in crack, and structure stress is made more uniformly to improve the ductility of structure.
(3) anchorage depth of bar planting is an important factor for influencing structural damage form.Research shows that: the anchoring of bar planting is deep
When spending smaller, structure easily occurs concrete cone and extracts destruction；When the anchorage depth of bar planting is larger, reinforcing bar extraction easily occurs for structure
Rupture failure after destruction or reinforcing bar constriction.This method has rationally designed the anchorage depth of bar planting, can not influence substrate coagulation
It destroys bonding interface while soil property amount and extracts destruction earlier than reinforcing bar.The anchorage depth of bar planting is smaller, when structure is destroyed
When, reinforcing bar fails to reach yield strength, and reinforcing bar fails to be fully used；The anchorage depth of bar planting is larger, easily to substrate intensity
It impacts, increases operating expenses, influence construction efficiency and strengthening quality.
(4) the distance between two neighboring bar planting center, while guaranteeing bonding shear strength, Ke Yiti are rationally designed
The utilization rate of high reinforcing bar avoids the waste of material, reduces unnecessary working procedure, and then construction efficiency and construction can be improved
Quality.When bar planting spacing is too small, bar planting is excessively intensively influenced by group bar effect, and the bar planting after repairing does not play too your writing also
Used time occurs matrix and destroys, and reinforcing bar is not utilized effectively；The shearing strength of structure is not when bar planting spacing is excessive, after repairing
It can effectively improve, repair efficiency is unobvious.
(5) dabbing processing is carried out to substrate concrete surface, makes its roughness 2.50-4.00mm, suitable roughness
Be conducive to improve the bonding shear strength between New-old concrete.
Detailed description of the invention
Fig. 1 is that the concrete road surface after a kind of repairing of embodiment of new-to-old concrete interface bar planting adhesive method of the present invention shows
It is intended to；
Fig. 2 is the concrete road surface after a kind of repairing of embodiment of new-to-old concrete interface bar planting adhesive method of the present invention
Cross-sectional view；(in figure: l indicates drilling depth)
Fig. 3 is the brill of the bar planting after a kind of snap the line positioning of embodiment of new-to-old concrete interface bar planting adhesive method of the present invention
Hole site arrangement schematic diagram；(in figure: L indicates the distance between two neighboring bore position center；M indicates bore position edge
At a distance from substrate concrete edge)
Specific embodiment
Specific embodiments of the present invention are given below.Specific embodiment is only used for that present invention be described in more detail, unlimited
The protection scope of the claim of this application processed.
The present invention provides a kind of new-to-old concrete interface bar planting adhesive method (abbreviation methods, referring to Fig. 1-3), feature
Be the following steps are included:
(1) substrate concrete quality: substrate concrete, that is, old concrete is checked；It is not low to choose substrate strength grade of concrete
In the substrate concrete of C20 as dealing with objects, substrate strength grade of concrete index and elasticity modulus should be according to field measurements
As a result it is determined by existing national standards " Code for design of concrete structures " GB50010；Substrate concrete surface is carried out at dabbing
Reason, makes 2.5~4mm of its roughness, and stone and the cement slurry etc. for removing the loosening of substrate concrete surface；
(2) dabbing treated substrate concrete is carried out to surface and carries out bar planting construction:
A. snap the line positions: substrate concrete rotates clockwise 60 ° of progress snap the line on along its length, then along its length
60 ° of degree of rotation carry out snap the line, two oblique line intersection areas, the as bore position of bar planting counterclockwise；Bore position is in equilateral triangle
Shape distribution, the minimum range > 6d between two neighboring bore position center, maximum distance take that both 30d's and 500mm is smaller
Value, i.e. min (30d, 500mm)；Bore position edge at a distance from substrate concrete edge >=both 5d and 100mm it is larger
Value, i.e. max (5d, 100mm)；D indicates bar planting diameter (mm)；The bar planting diameter d >=10mm；
B. it drills: bar planting hole is obtained with the impact drilling according to bore position；Drilling depth l, that is, bar planting anchorage depth
Meet: the anchorage depth minimum value of bar planting takes the larger value of both 12d and 150mm；2. maximum value≤B- of plant anchor depth
Max (5d, 50mm)；B is size of the substrate concrete along anchoring direction, the i.e. thickness (mm) of substrate concrete；In the present embodiment
Drilling depth is 15d；
The relationship of bore diameter D and bar planting diameter d meets table 1:
Table 1
| Bar planting diameter d (mm) | d≤16 | 16 d≤25 < | D > 25 |
| Bore diameter D (mm) | D≥d+4 | D≥d+6 | D≥d+8 |
Impact drill is used uniformly to pierce perpendicular to substrate concrete surface when drilling, to control the depth of drilling；
C. borehole cleaning: after a structural plane of substrate concrete is completed in drilling, using brush special and hair dryer (or rubber
Air bag, hand propelled inflator), carry out borehole cleaning operation；With the method for " blowing four brushes three times " when borehole cleaning, i.e., first blows in bar planting hole and float
Then dirt cleans hole wall with water with brush special, brush special pull in hole rotates when cleaning with water, blows brush repeatedly, cleans out
Dust in hole；
D. match glue: reinforcing bar should thoroughly remove surface attachments, floating rust and greasy dirt before with glue, reach bar planting and prepare to require；
Guarantee that drilling, borehole cleaning work are completed a construction section, and have organized to check and accept simultaneously, carries out record of acceptance of concealed work；With glue
It to be prepared according to the construction section dosage divided；It is prepared to obtain bar planting by the anchoring adhesive specification of selection with glue ratio
Glue mixture, and be finished within the specification stipulated time；
E. specific method injecting glue: is determined according to product description；General liquid anchoring adhesive mixture hand-held is automatic
Pressure grouting equipment carries out injecting glue operation；Operating method is: the pull rod of hand-held automatic pressure filling device (abbreviation filling device) is pulled,
By the capsula interna of the anchoring adhesive mixture prepared sucking filling device, it is noted that the air in bar planting hole is excluded, by filling device when injecting glue
Gluing nozzle protrude into bar planting hole and (protrude into about 8cm or so in the present embodiment), pushing drawing rod makes in anchoring adhesive mixture injection hole,
Filling device is pulled out to outside hole in push-pull rod, until the gluing nozzle of filling device is drawn to from 1/3 hole depth of aperture (in the present embodiment about
3cm or so) when stop injecting glue, injection rate is subject to be implanted into reinforcing bar after anchoring adhesive mixture slightly the phenomenon that being extruded；Anchoring adhesive
After the completion of mixture injecting glue, the sleeve of filling device, the spring of filling device and pull rod should be cleaned up with acetone, be used again with benefit；
F. bar planting: bar planting is carried out immediately after the completion of injecting glue；The specific method of bar planting is to guarantee that anchoring adhesive mixture is full
It is full, after the completion of injecting glue, the reinforcing bar processed is implanted into a little anchoring adhesive mixture of the end libation at an ancient wedding ceremony, is slowly inserted into bar planting hole；When operation
The rotation of side insertion edge same direction is wanted repeatedly, so that anchoring adhesive mixture and reinforcing bar and bar planting hole wall surface bonding are closely knit；Steel
Muscle will be inserted into bar planting hole duct bosom, not disturb bar planting (the present embodiment in the time as defined in anchoring adhesive specification under room temperature
In for for 24 hours)；
G. it inspects for acceptance: sending special messenger scene to nurse the bar planting constructed after bar planting in place, before gel, prevent collision；It plants
Muscle glue mixture carries out pull-out test after being fully cured；Using nondestructive test, test value reaches off-load after design requirement；It is non-
Destructive test is executed referring to " concrete structure post-anchoring technology regulation " (JGJ145-2004) appendix A；
(3) pour novel concrete: cleaning old concrete interface makes interface keep clean wet；In substrate concrete surface
It smears one layer of cement paste or interfacial agents and then pours novel concrete with a thickness of 3~6mm；Novel concrete intensity requirement compares base
The high grade of material concrete strength；It is conserved after the completion of pouring.
The present invention does not address place and is suitable for the prior art.
Claims (5)
1. a kind of new-to-old concrete interface bar planting adhesive method, it is characterised in that the following steps are included:
(1) check substrate concrete quality: the substrate concrete surface to strength grade not less than C20 carries out dabbing processing, makes
Its roughness is 2.5-4mm；
(2) dabbing treated substrate concrete is carried out to surface and carries out bar planting construction:
A. snap the line positions: substrate concrete is upper along its length to rotate 60 ° of progress snap the line, and then opposite direction rotates along its length
60 ° of degree carry out snap the line, two oblique line intersection areas, the as bore position of bar planting；Bore position distribution in equilateral triangle, 6d <
The distance between two neighboring bore position center≤min (30d, 500mm)；Bore position edge and substrate concrete edge
Distance >=max (5d, 100mm)；D indicates bar planting diameter；The bar planting diameter d >=10mm；
B. drill: according to bore position, drilling obtains bar planting hole；Drilling depth, that is, bar planting anchorage depth meets: max (12d,
150mm)≤drilling depth≤B-max (5d, 50mm)；B is the thickness of substrate concrete；
The relationship of bore diameter D and bar planting diameter d meets: d≤16mm, D >=d+4mm；16mm < d≤25mm, D >=d+6mm；d
> 25mm, D >=d+8mm；
C. borehole cleaning: after a structural plane of substrate concrete is completed in drilling, borehole cleaning operation is carried out；
D. match glue: reinforcing bar should thoroughly remove surface attachments, floating rust and greasy dirt before with glue, reach bar planting and prepare to require；Guarantee
Drilling, borehole cleaning work are completed；Anchoring adhesive mixture is obtained with glue；
E. injecting glue: anchoring adhesive mixture is injected in bar planting hole, injection rate is squeezed with being implanted into anchoring adhesive mixture after reinforcing bar
Subject to out the phenomenon that；
F. bar planting: bar planting is carried out immediately after the completion of injecting glue；
G. inspect for acceptance: anchoring adhesive mixture carries out pull-out test after being fully cured；Using nondestructive test, test value reaches
Off-load after design requirement；
(3) novel concrete is poured.
2. new-to-old concrete interface bar planting adhesive method according to claim 1, it is characterised in that pour novel concrete
Method is cleaning old concrete interface, and interface is made to keep clean wet；Substrate concrete surface smear one layer of cement paste or
Then person's interfacial agents pour novel concrete with a thickness of 3~6mm；Novel concrete intensity requirement is one higher than substrate concrete strength
Grade；It is conserved after the completion of pouring.
3. new-to-old concrete interface bar planting adhesive method according to claim 1, it is characterised in that when drilling, using impact
Drilling, impact drill is uniformly pierced perpendicular to substrate concrete surface, to control drilling depth.
4. new-to-old concrete interface bar planting adhesive method according to claim 1, it is characterised in that the operating method of injecting glue
It is: pulls the pull rod of hand-held automatic pressure filling device, by the capsula interna of the anchoring adhesive mixture prepared sucking filling device, when injecting glue
It is noted that excluding the air in bar planting hole, the gluing nozzle of filling device is protruded into bar planting hole, pushing drawing rod makes anchoring adhesive mixture
In injection hole, filling device is pulled out to outside hole in push-pull rod, until the gluing nozzle of filling device is drawn to stopping when from 1/3 hole depth of aperture
Injecting glue, injection rate is subject to be implanted into reinforcing bar after anchoring adhesive mixture the phenomenon that being extruded；Anchoring adhesive mixture injecting glue is completed
Afterwards, the sleeve of filling device, the spring of filling device and pull rod are cleaned up with acetone.
5. new-to-old concrete interface bar planting adhesive method according to claim 1, it is characterised in that the specific method of bar planting
It is that reinforcing bar is implanted into anchoring adhesive mixture on the libation at an ancient wedding ceremony of end, is inserted into bar planting hole after the completion of injecting glue；Want side insertion edge same when operation
Direction rotation, so that anchoring adhesive mixture and reinforcing bar and bar planting hole wall surface bonding are closely knit；Reinforcing bar will be inserted into bar planting hole duct most
Depths does not disturb reinforcing bar under room temperature before the deadline.
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| CN201710280953.1A CN107059536B (en) | 2017-04-26 | 2017-04-26 | A kind of new-to-old concrete interface bar planting adhesive method |
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| CN201710280953.1A CN107059536B (en) | 2017-04-26 | 2017-04-26 | A kind of new-to-old concrete interface bar planting adhesive method |
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| CN107974952B (en) * | 2017-12-11 | 2019-11-29 | 中铁十一局集团有限公司 | The method that bridge is repaired with concrete using bridge repairing |
| CN109518985A (en) * | 2018-10-10 | 2019-03-26 | 广东省建筑设计研究院 | A kind of design and construction method improving the power transmission of new-old concrete interface |
| CN109629421B (en) * | 2018-11-20 | 2020-11-27 | 同济大学 | Construction method for segment beam additionally provided with steel pipe and horizontally distributed steel bars |
| CN110499929A (en) * | 2019-08-28 | 2019-11-26 | 广东鼎耀工程技术有限公司 | A kind of construction auxiliary equipment and construction technology of reinforcing steel implant |
| CN110792101B (en) * | 2019-11-04 | 2021-11-23 | 广东省重工建筑设计院有限公司 | Underground building and implementation method thereof |
| CN111021186A (en) * | 2019-12-31 | 2020-04-17 | 广东粤路勘察设计有限公司 | Method for repairing large-space joint of concrete pavement slab |
| CN112525694A (en) * | 2020-12-01 | 2021-03-19 | 浙江瑞邦科特检测有限公司 | Nondestructive bar planting drawing test detection structure and method |
| CN114775458B (en) * | 2022-03-17 | 2024-04-26 | 广州市交通设计研究院有限公司 | Method for additionally paving UHPC layer on bridge deck concrete pavement layer |
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| CN102486049A (en) * | 2010-12-06 | 2012-06-06 | 上海伙隆实业有限公司 | Filler wall masonry tie bar planting method |
| CN103711053A (en) * | 2014-01-16 | 2014-04-09 | 山东大学 | Composite reinforced roadbed and construction method |
| CN204700349U (en) * | 2015-06-17 | 2015-10-14 | 陕西建工集团总公司 | A kind of beam slab bar planting boring bar tool |
| CN105888259A (en) * | 2016-03-31 | 2016-08-24 | 张友谊 | Concrete steel bar planting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486049A (en) * | 2010-12-06 | 2012-06-06 | 上海伙隆实业有限公司 | Filler wall masonry tie bar planting method |
| CN103711053A (en) * | 2014-01-16 | 2014-04-09 | 山东大学 | Composite reinforced roadbed and construction method |
| CN204700349U (en) * | 2015-06-17 | 2015-10-14 | 陕西建工集团总公司 | A kind of beam slab bar planting boring bar tool |
| CN105888259A (en) * | 2016-03-31 | 2016-08-24 | 张友谊 | Concrete steel bar planting method |
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