CN105735078B - A kind of double layer continuous reinforced concrete pavement structure suitable for area of heavy rainfull - Google Patents
A kind of double layer continuous reinforced concrete pavement structure suitable for area of heavy rainfull Download PDFInfo
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- CN105735078B CN105735078B CN201610135172.9A CN201610135172A CN105735078B CN 105735078 B CN105735078 B CN 105735078B CN 201610135172 A CN201610135172 A CN 201610135172A CN 105735078 B CN105735078 B CN 105735078B
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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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
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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
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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
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
- E01C11/226—Coherent pavings
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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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/145—Sliding coverings, underlayers or intermediate layers ; Isolating or separating intermediate layers; Transmission of shearing force in horizontal intermediate planes, e.g. by protrusions, by inlays
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of double layer continuous reinforced concrete pavement structure suitable for area of heavy rainfull, the pavement structure includes basic unit, basic unit is divided into basic unit and gone to a grassroots level, upper basic unit uses lean concrete, go to a grassroots level and use asphalt macadam, it is equipped with basic unit under Portland Cement Concrete Surface Course, basic unit and is equipped with granular cushion；Portland Cement Concrete Surface Course is provided with double layer continuous glass fiber-reinforced polymer and bearing, and double layer continuous glass fiber-reinforced polymer is the continuous horizontal glass fiber-reinforced polymer of the continuous longitudinal glass fiber-reinforced polymer in upper strata and lower floor and longitudinal glass fiber-reinforced polymer；Set on surface layer every 150m and pre- joint-cutting is provided with a transverse joint, the well lid on surface layer；Thin type dense-graded asphalt concrete interlayer is provided between basic unit and surface layer；Basic unit sets 2%~3% crown slope with surface layer.The present invention can effectively solve the road of area of heavy rainfull because the problem of water system is enriched or impeded drainage pavement structure earlier period damage is serious.
Description
Technical field
The invention belongs to road engineering technical field, it is related to a kind of double layer continuous armored concrete suitable for area of heavy rainfull
Pavement structure.
Background technology
The problem of ponding is serious inside current road generally existing impeded drainage, Lu Biao and pavement structure, in addition by city
The extreme weather events such as extra torrential rain frequency that the factors such as tropical island effect trigger is existing, presence and the driving effect of water make pavement structure by
To seriously washing away, the bulk strength and stability of strong influence pavement structure make road earlier period damage serious, often because road
The maintenance on road causes interruption of communication or congestion, or even triggers traffic accident, the durability in the urgent need to improving road engineering.
China's last century has built substantial amounts of cement concrete pavement around the nineties, cement concrete pavement need to typically be set
Seam is put, to solve the problems such as expanding with heat and contract with cold of cement concrete slab, but washing away and driving effect due to water, cement concrete
Be also easy to produce at the seam and plate angle on road surface come to nothing, purt mud, faulting of slab ends, the disease such as disconnected plate, especially in the urban road of area of heavy rainfull
This phenomenon is extremely serious, the service life and quality of extreme influence cement concrete pavement.Hereafter, it is in all parts of the country to build drip
Based on blue or green road surface, but bituminous paving is same because the effect of water generates more early disease, or even also has caused by high temperature
Rutting deformation and the disease such as the face checking caused by low temperature, and the height of temperature for cement concrete pavement it is general not
These can be caused to influence, and the bearing capacity of bituminous paving is also relatively poor.Adopt this structure of bituminous paving always in recent years
Mainly it is easier because the relative cement concrete pavement of maintenance after disease occurs in bituminous paving, does not solve road inherently
The problem of face early disease takes place frequently, and the design service life of bituminous paving is generally 10~15 years, and cement concrete pavement
Design service life is generally 30~50 years, if so the problem of cement concrete pavement is present can be solved, giving full play to it
Long-life feature and lacking is repaired, and will produce significant social and economic effects.Building cement concrete pavement can also fill
Divide using materials such as cement, the flyash of China's yield relative abundance, reduce the dependence to petroleum resources, promote local economy hair
Exhibition.Thus, it is necessary to research and develop a kind of new cement concrete pavement structure, the pavement structure not only can set seam less, subtract
Few water enters to blend the flimsy problem of seam, improves traffic safety and comfortableness, also there is excellent erosion resistibility and carrying
Ability, can solve area of heavy rainfull road because the problem of water system is enriched or impeded drainage pavement structure earlier period damage is serious.
The content of the invention
The technical problems to be solved by the invention are to research and develop a kind of double layer continuous armored concrete suitable for area of heavy rainfull
Pavement structure, this pavement structure not only can effectively solve area of heavy rainfull road because water system is abundant or impeded drainage pavement structure
The problem of earlier period damage is serious, and with good pavement performance and social and economic effects.
To achieve the above object, the technical scheme is that：
A kind of double layer continuous reinforced concrete pavement structure suitable for area of heavy rainfull, including basic unit, the basic unit are divided into
Upper basic unit and to go to a grassroots level, upper basic unit uses lean concrete, thickness is 20~30cm, goes to a grassroots level and uses asphalt macadam, thickness is 9~
It is equipped with Portland Cement Concrete Surface Course in 18cm, basic unit, thickness is to be equipped with granular cushion, thickness under 20~30cm, basic unit
For 20~30cm；The Portland Cement Concrete Surface Course is provided with double layer continuous glass fiber-reinforced polymer and bearing, double layer continuous glass fiber-reinforced polymer
For the continuous horizontal glass fiber-reinforced polymer of the continuous longitudinal glass fiber-reinforced polymer in upper strata and lower floor and longitudinal glass fiber-reinforced polymer, on surface layer
Set every 150m and pre- joint-cutting is provided with a transverse joint, the well lid on surface layer；Thickness is provided between the basic unit and surface layer
For 4cm thin type dense-graded asphalt concrete interlayer；The basic unit sets 2%~3% crown slope with surface layer.
The transverse joint width is 1.0~1.5cm, and length is that half range road surface is wide, the whole surface thickness of depth penetration, point
For upper and lower part, wherein upper lateral joint depth is 7cm, is filled using silicone adhesive, upper lateral seam 8~15cm of both sides
In the range of poured using epoxy resin mortar, lower, transverse seam using ethylene closed cell foam joint filling board fill, longitudinal glass fibre
Muscle crosses joint filling board；The pre- joint-cutting depth is 3~4cm, and width is 3~5mm, from well lid edge to Portland Cement Concrete Surface Course side
Edge, using silicone adhesive joint filling.
The maximum particle diameter of gathering materials of the thin type dense-graded asphalt concrete interlayer is 16mm, and voidage is no more than 2%, pitch
Consumption is 4%~5%；The asphalt macadam gathers materials maximum particle diameter for 37.5mm, and asphalt content is 3%~4%.
Continuous distance of longitudinal glass fiber-reinforced polymer away from surface layer top surface in the upper strata is not less than 9cm and no more than 1/2 surface layer
Thickness；Horizontal glass fiber-reinforced polymer is away from surface layer bottom surface in the continuous horizontal glass fiber-reinforced polymer of the lower floor and longitudinal glass fiber-reinforced polymer
Distance is 3~5cm, and longitudinal glass fiber-reinforced polymer is placed on horizontal glass fiber-reinforced polymer；The glass fiber-reinforced polymer modulus of elasticity is not less than
35000MPa, surface is in shape of threads, a diameter of 16mm, the continuous horizontal glass of the continuous longitudinal glass fiber-reinforced polymer in upper strata and lower floor
Fiber bar is 0.60%~0.80% with longitudinal glass fiber-reinforced polymer ratio of reinforcement, and glass fiber-reinforced polymer, which passes through steel tendon colligation, to be completed to connect
Connect and be placed on bearing, the horizontal glass fiber-reinforced polymer at longitudinal construction joint is connected using straight screw sleeve, horizontal glass fiber-reinforced polymer
Length in reserve is 60cm and 20cm, length interlaced arrangement.
Beneficial effects of the present invention are as follows：
The present invention provides a kind of double layer continuous reinforced concrete pavement structure suitable for area of heavy rainfull, is many according to solving
Rain area road is because the problem of water system is abundant or impeded drainage pavement structure earlier period damage is serious, improving pavement structure performance
Principle carry out rationally with scientific design；Bed course of the present invention uses graded broken stone, and basic unit uses asphalt macadam, lean concrete,
Surface layer can play good row using the cement concrete for setting double layer continuous glass fiber-reinforced polymer, bed course using graded broken stone
Water, impermeable role, it is ensured that basic unit is in more dry environment, make with two layers of cement stabilized soil material commonly used in the art
Compared for the basic unit of cement concrete pavement structure, pavement structure of the invention is both for area of heavy rainfull road rainfall is more, underground
The features such as water level is high has enough erosion resistibilities, and each structure sheaf embodies the incremental rule of rigidity again, advantageously reduces road surface knot
The service life of the load fatigue stress of structure, effectively lifting pavement structure.
The present invention is high mainly for the current acid rain frequency of occurrences using glass fiber-reinforced polymer, and road table pollutant is more, and rainwater is from connecing
It is serious to reinforcement corrosion after seam or horizontal micro-crack are infiltrated, the effective cross-section of reinforcing bar can be made constantly to reduce, reinforcing bar is done sth. in advance to break
Split；Glass fiber-reinforced polymer has excellent decay resistance, also adapts to bigger stretcher strain, and glass fiber-reinforced polymer thermal expansion system
Number is than reinforcing bar closer to most cement concretes, and the deformation with cement concrete is more coordinated and unanimously, typically will not
There is longitudinal tensile failure model, the use longevity for pavement structure can be greatly promoted in the cement concrete pavement structure of area of heavy rainfull
Life.
Two layers above and below glass fiber-reinforced polymer point in pavement structure of the present invention, the continuous longitudinal glass fiber-reinforced polymer in upper strata is mainly used
In the cracking of constraint surface layer cement concrete, make Portland Cement Concrete Surface Course by the flat of the crackle gap width of temperature contracting and drying shrinkage generation
Mean control is within 0.5mm, and upper strata does not set horizontal glass fiber-reinforced polymer, is conducive to the vibration compacting of cement concrete, and saves
About cost；Lower floor sets continuous horizontal glass fiber-reinforced polymer and longitudinal glass fiber-reinforced polymer is mainly consideration area of heavy rainfull cement concrete
Situations such as plat-bottom escape or roadbed settlement easily occurs in road surface, occurs acting on following laminate bottom in driving after these situations and typically can
By larger tension, and the bending tensile strength of cement concrete slab is relatively small, the continuous horizontal glass fiber-reinforced polymer of lower floor
The bending tensile strength of Portland Cement Concrete Surface Course plate can be effectively lifted with longitudinal glass fiber-reinforced polymer, Portland Cement Concrete Surface Course is substantially reduced
There is the probability of disconnected plate in plate；Basic unit also sets certain crown slope, and the water that especially can infiltrate road surface is by road camber from basic unit edge
Discharge, reduces surface layer bottom ponding to washing away at the top of basic unit.
The present invention sets a transverse joint on surface layer every 150m, predominantly reduces transversal crack quantity, has set
The cement concrete pavement of continuous glass fibre muscle does not set transverse joint mostly, more transversal crack typically occurs, substantially
Every 1.0~2.0m mono-, and the gap width of a small number of transversal crack is larger, can produce seepage problem, in addition occur gnaw side, it is broken
The disease such as broken, transverse joint width can reduce transversal crack about 20~30 for 1.0~1.5cm setting, also further reduce
Water enters to blend because crackle has the hidden danger for being likely to occur disease；Minority is set in existing continuous reinforced concrete pavement engineering
A number of transverse joint, although reduce these problems, but transverse joint is often again into weak link, at transverse joint
Occur in that gnaw side, come to nothing, the disease such as faulting of slab ends, disconnected plate, compared with traditional transverse joint, upper lateral seam both sides 8 of the invention
Poured in the range of~15cm using epoxy resin mortar, because epoxy resin mortar intensity is high, efficiently solves seam crossing and easily occur gnawing side
Problem；Another significant advantage of transverse joint is that continuous glass fibre muscle with being set in pavement structure is effectively tied in the present invention
Close, continue transverse joint in the continuity of two layers of longitudinal glass fiber-reinforced polymer above and below keeping, existing engineering at transverse joint and all set
Longitudinal dowel bar reinforcement bar of 50cm length is put, the reinforcing bar of seam crossing is discontinuous and short, the coagulating cement of seam crossing reinforcing bar and its surrounding
Soil is easily damaged, and adds washing away for water, occur at transverse joint come to nothing, the disease such as faulting of slab ends, disconnected plate, with reference to road surface in the present invention
Other features of structure, transverse joint of the invention can effectively solve these problems.
The present invention is provided with pre- joint-cutting at the well lid on surface layer, can effectively discharge answering inside pavement structure near well lid
Crack is more and irregular at power, the existing cement concrete pavement well lid of solution, the flimsy problem of pavement structure at well lid.
Upper strata in double layer continuous glass fiber-reinforced polymer of the present invention does not set horizontal glass fiber-reinforced polymer, matches somebody with somebody with existing double layer continuous
Reinforced concrete road surface is compared to that can save 1/4 glass fiber-reinforced polymer consumption, and by taking width of roadway 16m as an example, every kilometer can save build
1,400,000 yuan or so of cost；Compared with Portland cement concrete pavement structure, the present invention is due to being provided with double layer continuous glass fibre
Muscle up-front investment cost about increases by 46%, but when can effectively solve existing cement concrete pavement structure applied to area of heavy rainfull
Be also easy to produce come to nothing, purt mud, faulting of slab ends, the disease such as disconnected plate the problem of, service life can improve 3~4 times, because seam and disease are driven a vehicle less
Comfortableness and security are increased dramatically, and maintenance costs and the reconstruction cost shared in year also greatly reduce, and can reduce road surface
The harmful effect caused to society is damaged, the often traffic caused by pavement damage and maintenance of area of heavy rainfull road can be also solved
The problem of interrupting or congestion, or even trigger traffic accident, there is good social benefit and economic benefit.
2016《The government work report》In point out, great infrastructure construction will be strengthened during " 13 ", it is newly-built to change
Build about 30,000 kilometers of highway mileage open to traffic, the pavement structure has a extensive future, and potential social and economic effects show
Write.
Brief description of the drawings
Fig. 1 is the structural representation of double layer continuous reinforced concrete pavement structure of the present invention.
Fig. 2 is the transverse joint schematic diagram of double layer continuous reinforced concrete pavement structure of the present invention.
Fig. 3 sets partial schematic diagram for the glass fiber-reinforced polymer of double layer continuous reinforced concrete pavement structure of the present invention.
Fig. 4 sets for the horizontal glass fiber-reinforced polymer at longitudinal construction joint of double layer continuous reinforced concrete pavement structure of the present invention
Put partial schematic diagram.
The description of reference numerals of each element is as follows in figure：
1- Portland Cement Concrete Surface Courses；The thin type dense-graded asphalt concrete interlayers of 2-；Basic unit on 3- lean concretes；4- pitches are broken
Stone is gone to a grassroots level；5- granular cushions；6- longitudinal directions glass fiber-reinforced polymer；7- transverse direction glass fiber-reinforced polymers；8- ethylene closed cell foams are filled out
Stitch plate；9- silicone adhesives；10- epoxy resin mortars；11- bearings；12- straight screw sleeves；13- steel tendons.
Embodiment
For a better understanding of the present invention, the present invention is made further specifically below with reference to drawings and the specific embodiments
Bright, described embodiment is merely illustrative of the technical solution of the present invention, and is not intended to limit the invention.
Embodiment
As shown in figure 1, a kind of double layer continuous reinforced concrete pavement structure suitable for area of heavy rainfull of the present invention, including
Basic unit 3 on Portland Cement Concrete Surface Course 1, thin type dense-graded asphalt concrete interlayer 2, lean concrete, asphalt macadam is gone to a grassroots level 4, level
With blotter 5.
Wherein, the thickness of Portland Cement Concrete Surface Course 1 is 24cm, and flexural tensile strength standard value is 5.0MPa, and surface layer connects provided with double-deck
Continuous glass fiber-reinforced polymer and bearing 11, double layer continuous glass fiber-reinforced polymer are that the continuous longitudinal glass fiber-reinforced polymer 6 in upper strata and lower floor are continuous
Horizontal glass fiber-reinforced polymer 7 and longitudinal glass fiber-reinforced polymer 6；The thickness of basic unit 3 is 24cm on lean concrete, and cement consumption is 178kg/
m3, flexural tensile strength standard value is 4.0MPa；Asphalt macadam goes to a grassroots level 4 thickness for 10cm, and maximum particle diameter of gathering materials is 37.5mm, pitch
Consumption is 3.5%；The thickness of granular cushion 5 is 20cm, directly using broken rear ungarbled rubble；Basic unit and surface layer it
Between set thin type dense-graded asphalt concrete interlayer of the thickness as 4cm, maximum particle diameter of gathering materials is 16mm, and voidage is 1.8%, pitch
Consumption is 4.6%；Basic unit is all provided with 3% crown slope with surface layer.
A transverse joint is set every 150m on surface layer, joint gap is 1.2cm, and length is that half range road surface is wide, depth
Through whole surface thickness, it is divided into upper and lower part, wherein upper lateral joint depth is 7cm, is filled using silicone adhesive 9, on
Poured in the range of the 10cm of portion transverse joint both sides using epoxy resin mortar 10, lower, transverse seam uses ethylene closed cell foam joint filling
Plate 8 is filled, and longitudinal glass fiber-reinforced polymer 6 crosses ethylene closed cell foam joint filling board 8 (as shown in Figure 2)；At well lid on surface layer
If pre- joint-cutting, pre- joint-cutting depth is 3cm, and width is 4mm, from well lid edge to Portland Cement Concrete Surface Course edge, using silicone adhesive 9
Joint filling；Double layer continuous glass fiber-reinforced polymer, continuous longitudinal distance of the glass fiber-reinforced polymer 6 away from surface layer top surface in upper strata are set on surface layer
For 9cm, the continuous horizontal glass fiber-reinforced polymer 7 of lower floor and horizontal glass fiber-reinforced polymer 7 in longitudinal glass fiber-reinforced polymer 6 are away from surface layer bottom surface
Distance is 4cm, and longitudinal glass fiber-reinforced polymer 6 is placed on horizontal glass fiber-reinforced polymer 7, and glass fiber-reinforced polymer modulus of elasticity is 40000MPa,
Surface is in shape of threads, a diameter of 16mm, the continuous horizontal glass fiber-reinforced polymer 7 of the continuous longitudinal glass fiber-reinforced polymer 6 in upper strata and lower floor
It is 0.60% with longitudinal ratio of reinforcement of glass fiber-reinforced polymer 6, glass fiber-reinforced polymer completes connection by the colligation of steel tendon 13 and is placed in branch
On seat 11 (as shown in Figure 3), the horizontal glass fiber-reinforced polymer 7 at longitudinal construction joint is connected using straight screw sleeve 12, horizontal glass
Fiber bar length in reserve is 60cm and 20cm, length interlaced arrangement (as shown in Figure 4).
Claims (2)
1. a kind of double layer continuous reinforced concrete pavement structure suitable for area of heavy rainfull, including basic unit, the basic unit are divided into
Basic unit and to go to a grassroots level, upper basic unit uses lean concrete, thickness is 20~30cm, goes to a grassroots level and uses asphalt macadam, thickness is 9~
It is equipped with Portland Cement Concrete Surface Course in 18cm, basic unit, thickness is to be equipped with granular cushion, thickness under 20~30cm, basic unit
For 20~30cm；The Portland Cement Concrete Surface Course is provided with double layer continuous glass fiber-reinforced polymer and bearing, double layer continuous glass fiber-reinforced polymer
For the continuous horizontal glass fiber-reinforced polymer of the continuous longitudinal glass fiber-reinforced polymer in upper strata and lower floor and longitudinal glass fiber-reinforced polymer, on surface layer
Set every 150m and pre- joint-cutting is provided with a transverse joint, the well lid on surface layer；Thickness is provided between the basic unit and surface layer
For 4cm thin type dense-graded asphalt concrete interlayer；The basic unit sets 2%~3% crown slope with surface layer；
The transverse joint width is 1.0~1.5cm, and length is that half range road surface is wide, and the whole surface thickness of depth penetration is divided into
Portion and bottom, wherein upper lateral joint depth are 7cm, are filled using silicone adhesive, upper lateral seam both sides 8~15cm scopes
Interior use epoxy resin mortar is poured, and lower, transverse seam is filled using ethylene closed cell foam joint filling board, and longitudinal glass fiber-reinforced polymer is horizontal
Wear joint filling board；The pre- joint-cutting depth is 3~4cm, and width is 3~5mm, from well lid edge to Portland Cement Concrete Surface Course edge,
Using silicone adhesive joint filling；
The maximum particle diameter of gathering materials of the thin type dense-graded asphalt concrete interlayer is 16mm, and voidage is no more than 2%, asphalt content
For 4%~5%；The asphalt macadam gathers materials maximum particle diameter for 37.5mm, and asphalt content is 3%~4%.
2. a kind of double layer continuous reinforced concrete pavement structure suitable for area of heavy rainfull according to claim 1, it is special
Levy and be, continuous distance of longitudinal glass fiber-reinforced polymer away from surface layer top surface in the upper strata is not less than 9cm and no more than 1/2 surface layer is thick
Degree；In the continuous horizontal glass fiber-reinforced polymer of the lower floor and longitudinal glass fiber-reinforced polymer horizontal glass fiber-reinforced polymer away from surface layer bottom surface away from
From for 3~5cm, longitudinal glass fiber-reinforced polymer is placed on horizontal glass fiber-reinforced polymer；The glass fiber-reinforced polymer modulus of elasticity is not less than
35000MPa, surface is in shape of threads, a diameter of 16mm, the continuous horizontal glass of the continuous longitudinal glass fiber-reinforced polymer in upper strata and lower floor
Fiber bar is 0.60%~0.80% with longitudinal glass fiber-reinforced polymer ratio of reinforcement, and glass fiber-reinforced polymer, which passes through steel tendon colligation, to be completed to connect
Connect and be placed on bearing, the horizontal glass fiber-reinforced polymer at longitudinal construction joint is connected using straight screw sleeve, horizontal glass fiber-reinforced polymer
Length in reserve is 60cm and 20cm, length interlaced arrangement.
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