CN105401519A - Anti-knocking steel box beam bridge deck paving structure and paving method - Google Patents
Anti-knocking steel box beam bridge deck paving structure and paving method Download PDFInfo
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- CN105401519A CN105401519A CN201510946264.0A CN201510946264A CN105401519A CN 105401519 A CN105401519 A CN 105401519A CN 201510946264 A CN201510946264 A CN 201510946264A CN 105401519 A CN105401519 A CN 105401519A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention provides an anti-knocking steel box beam bridge deck paving structure and a paving method and belongs to the technical field of traffic transportation and the field of protection of bridge engineering. In the structure, the upper layer is an asphalt concrete wearing layer and the lower layer is a GFRP (Glass Fiber Reinforced Polymer)-composite concrete anti-knocking pavement layer, namely, a waterproof layer (2) is arranged on a steel box beam orthotropic bridge deck slab (1); a lower adhesive layer (3) is arranged on the waterproof layer (2); the GFRP-composite concrete anti-knocking pavement layer (4) is arranged on the lower adhesive layer (3); an upper adhesive layer (5) is arranged on the GFRP-composite concrete anti-knocking pavement layer (4); the asphalt concrete wearing layer (6) is arranged on the upper adhesive layer (5). The paving method comprises the following steps: (a) derusting a steel bridge deck by sandblasting; (b) performing anticorrosive coating on the steel bridge deck slab, and arranging the waterproof layer in a sprinkling way; (c) forming the lower adhesive layer on the waterproof layer in a coating mode; (d) strapping a GFRP glass fiber reinforced bar net, and then pouring high-strength high-toughness light composite concrete; (e) carrying out vibrating and maintaining, and afterwards adhering a GFRP glass fiber reinforced sheet on the upper surface of the concrete layer; (f) laying coarse sand on a contact surface between the GFRP sheet and the asphalt pavement layer, and arranging the upper adhesive layer in a sprinkling way; and (g) laying the asphalt concrete wearing layer.
Description
Technical field
The present invention relates to a kind of steel box girder bridge floor paving layer structure and paving method, particularly relate to a kind of steel box girder bridge floor paving layer structure and the paving method with the capability of antidetonance, belong to technical field of traffic transportation and bridge engineering protection field.
Background technology
Bridge construction is urban viaduct, overpass bridge especially, bridge spanning the sea, belong to opening public transit facility, in its military service process, there is the blast of larger hazardous materials transportation vehicle or terrorist above bridge floor, ignite the risk that car bomb or case and bag bomb cause structural failure and extensive casualties.In bridge construction, one the most common is exactly steel box girder, by Orthotropic Steel Bridge Deck, and stiffening rib, diaphragm, the compositions such as midfeather.Deck thickness is thin; rigidity is little; general deck installation structure generally only considers that the point load of dispersion wheel protects bridge deck; not there is the effect of opposing blast impulse; when meeting with Blast Load; may there is METHOD FOR LARGE DEFORMATION ELASTOPLASTIC in Orthotropic Steel Bridge Deck, even occur cracking or cut, cause bridge construction generation local failure or total Collapse.At present, existing highway bridge specification not yet considers Blast Shock, the research of bridge construction antiknock aspect is focusing more under bridge the destruction of bridge pier or the destruction to bridge construction entirety, the blast resistant measures research taked exploding above bridge floor seldom, for the damage and fracture under minimizing steel box girder especially steel bridge deck up Blast Loads, propose a kind of steel box girder bridge floor paving layer structure with the capability of antidetonance, weaken the destroying infection of Blast Load to substructure by this pave-load layer structure.
Summary of the invention
The object of the invention is to overcome the weak point existed in above-mentioned technology, a kind of steel box girder bridge floor paving layer structure and the paving method with the capability of antidetonance are provided.
For achieving the above object, the technical solution used in the present invention is:
A kind of steel box girder bridge floor paving structure with the capability of antidetonance, to set up defences above steel box beam orthotropic deck slab 1 water layer 2, tack coat 3 is set in the top of waterproofing course 2, the top of lower tack coat 3 is GFRP-composite concrete antiknock pave-load layer 4, the top of GFRP-composite concrete antiknock pave-load layer 4 is upper tack coat 5, and the top of upper tack coat 5 is bituminous concrete wearing layer 6.Described GFRP-composite concrete antiknock pave-load layer is made up of the high-strength and high-ductility Light-weight composite concrete layer and GFRP glass fiber reinforcement thin plate configuring GFRP muscle net, described GFRP glass fiber reinforcement thin plate is pasted on described high-strength and high-ductility Light-weight composite concrete layer surface, and described high-strength and high-ductility Light-weight composite concrete adopts following proportioning (weight portion):
Cement 489;
Sand 602;
Coarse aggregate 870;
Water 160;
Glass fiber 50;
Steel fibre 150;
EPS particle 20;
SILICA FUME 145;
Early strength and high effect water reduction agent 25;
Expansion agent 30.
Further, described bituminous concrete wearing layer is made up of 20mmOGFC-13 open gradation drainage asphalt abrasion upper layer+20mm modified asphalt concrete SMA-10 pitch abrasion cutting optimal.
Further, the thick 2mm of described GFRP glass fiber reinforcement thin plate, main component is alkali-free glass fibre.
Further, the configuration mode of described GFRP muscle net is single-layer bidirectional GFRP glass fiber reinforcement muscle net.Described GFRP glass fiber reinforcement muscle net is positioned in the middle part of GFRP-composite concrete antiknock pave-load layer, and GFRP glass fiber reinforcement muscle diameter 10mm, tensile strength standard value is not less than 600MPa, and mesh spacing is not more than 150mm × 150mm.
Further, described EPS grain diameter is 1mm, and apparent density is approximately 20kg/m3.
Also further, a kind of paving method with the steel box girder bridge floor paving structure of the capability of antidetonance, comprises following step of mating formation in the present invention:
A. Steel Bridge Deck derusting by sandblasting;
B. anticorrosive coating process is carried out to steel bridge deck, spread waterproofing course;
C. waterproofing course is coated with and plants lower tack coat;
D. colligation GFRP muscle net, then builds high-strength and high-ductility Light-weight composite concrete;
E. vibrate, maintenance completes, layer of concrete upper surface pastes GFRP glass fiber reinforcement thin plate;
F. coarse sand is laid at the contact surface of GFRP thin plate and asphalt mixture surfacing, tack coat in spread;
G. asphalt concrete abrasion layer.
Further, lower tack coat is two-layer modified epoxy cementing agent, and first floor 0.2 ~ 0.3mm modified epoxy cementing agent, above spreads the alloyed steel sand of 0.3 ~ 0.6mm; The second layer 0.4 ~ 0.6mm modified epoxy cementing agent, above spreads the rubble of 1.18 ~ 2.36mm.
Further, for strengthening the bonding of GFRP thin plate and bituminous concrete wearing layer, the contact surface of GFRP thin plate and asphalt mixture surfacing lays the coarse sand of particle diameter 2 ~ 4.75mm, and upper bonding layer material is spreading 1kg/m2 modified emulsifying asphalt.
Further, high-strength and high-ductility light weight concrete construction adopt layering grouting with vibration compound build forming method.
Further, for improving the uniformity of concrete batching system and avoiding segregation, use super plasticizer and extend mixing time.
Further, for making fiber distribute good and avoid conglomeration, adopting when adding fiber and slowly disperseing Adding Way.
Advantage of the present invention is:
Usefulness of the present invention is to propose first to consider anti-explosion design in steel box girder bridge floor paving layer structure, a kind of steel box girder bridge floor paving layer structure and the paving method with the capability of antidetonance are provided, by design GFRP-composite concrete antiknock pave-load layer, single-layer bidirectional GFRP muscle net and upper surface is inside established to paste 2mm thick GFRP glass fiber reinforcement thin plate, and select high-strength and high-ductility Light-weight composite concrete, thus reach the intensity strengthening steel box-girder pave-load layer, toughness and shock resistance antiknock ability, the pressure of very big alleviation explosion wave, for bridge box-beam structure improve its opposing bridge floor above blast impulse ability a kind of simple and practical method and thinking are provided.Particularly:
(1) GFRP glass fiber reinforcement thin plate intensity is high, has good corrosion resistance and good incubation and thermal insulation function, impact resistance is strong and do not burn under high temperature, can as being anti-impact force and the first fire-retardant defence line.
(2) be provided with single-layer bidirectional GFRP glass fiber reinforcement muscle net in the middle part of 65mm thick high-strength and high-ductility Light-weight composite concrete layer of concrete, utilize the feature that GFRP muscle is high-strength, fire-retardant, replace common steel mesh reinforcement, become anti-impact force and fire-retardant secondary defense.
(3) GFRP-mixes compound and coagulates native antiknock pave-load layer and select high-strength and high-ductility light weight concrete construction, adds a certain proportion of steel fibre, glass fiber and EPS particle and SILICA FUME, and replaces coarse aggregate with EPS particulate fraction.EPS particle can alleviate concrete deadweight, SILICA FUME significantly can improve the adhesive property of EPS particle and cement slurry, improve EPS light weight concrete construction compressive strength, mixing of steel fiber and glass fiber then can significantly improve its shrinkage performance, reach high-strength, the object of high-ductility and lightweight, become the 3rd defence line of anti-impact force antiknock.
(4) GFRP-mixes compound to coagulate adhesive property between native antiknock pave-load layer and steel plate good, and shear strength is up to 2.0MPa, and modulus of elasticity is less than 30GPa, and bent toughness is very large, can not rupture under regular service conditions with the upper and lower disturbance of pontic.
Accompanying drawing explanation
Fig. 1 is the structural representation with the steel box girder bridge floor paving layer of the capability of antidetonance provided by the invention.
Fig. 2 is GFRP-composite concrete antiknock pave-load layer structural representation.
In figure, 1, steel box girder bridge panel 2, waterproofing course 3, lower tack coat 4, GFRP-composite concrete antiknock pave-load layer 5, upper tack coat 6, bituminous concrete wearing layer 7, high-strength and high-ductility light weight concrete construction 8, GFRP glass fiber reinforcement muscle net 9, GFRP glass fiber reinforcement thin plate.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Pave-load layer structure of the present invention is 40mm bituminous concrete wearing layer and lower floor by upper strata is that the GFRP-composite concrete antiknock pave-load layer that 67mm is thick forms.GFRP-composite concrete antiknock pave-load layer is antiknock core layer, is made up of the high-strength and high-ductility Light-weight composite concrete of 65mm thick configuration GFRP muscle net and surface mount 2mm thick GFRP glass fiber reinforcement thin plate.As shown in Figure 1, this paving structure is followed successively by steel box girder bridge panel 1 from bottom to up, waterproofing course 2, lower tack coat 3, GFRP-composite concrete antiknock pave-load layer 4, upper tack coat 5, bituminous concrete wearing layer 6.Wherein, as shown in Figure 2, described GFRP-composite concrete antiknock pave-load layer is made up of the high-strength and high-ductility Light-weight composite concrete layer 7 and GFRP glass fiber reinforcement thin plate 9 configuring GFRP muscle net 8, described GFRP glass fiber reinforcement thin plate 9 is pasted on described high-strength and high-ductility Light-weight composite concrete layer 7 surface, and described high-strength and high-ductility Light-weight composite concrete layer adopts following proportioning (weight portion):
Cement 489;
Sand 602;
Coarse aggregate 870;
Water 160;
Glass fiber 50;
Steel fibre 150;
EPS particle 20;
SILICA FUME 145;
Early strength and high effect water reduction agent 25;
Expansion agent 30.
The above-mentioned paving method with the steel box girder bridge floor paving layer structure of the capability of antidetonance, comprises the following steps and construction requirement: the derusting by sandblasting of (a) Steel Bridge Deck, requires that cleannes reach Sa2.5 level, roughness reaches 50 ~ 100 μm; B () carries out anticorrosive coating process to steel bridge deck, spread waterproofing course; C () waterproofing course is coated with two-layer modified epoxy cementing agent, first floor 0.2 ~ 0.3mm modified epoxy cementing agent, above spreads the alloyed steel sand of 0.3 ~ 0.6mm; The second layer 0.4 ~ 0.6mm modified epoxy cementing agent, above spreads the rubble of 1.18 ~ 2.36mm; (d) colligation single-layer bidirectional GFRP glass fiber reinforcement muscle net, be positioned in the middle part of GFRP-composite concrete antiknock pave-load layer, GFRP muscle diameter 10mm, tensile strength standard value is not less than 600MPa, mesh spacing 150mm × 150mm, then builds the thick high-strength and high-ductility Light-weight composite concrete of 65mm; E () is vibrated, maintenance completes, concrete strength reaches after 80%, pastes 2mm thick GFRP glass fiber reinforcement thin plate at concrete surface; F the contact surface of () GFRP thin plate and asphalt mixture surfacing lays the coarse sand of particle diameter 2 ~ 4.75mm, binding material is spreading 1kg/m
2modified emulsifying asphalt (g) lays the thick bituminous concrete wearing layer of 40mm.
The thick bituminous concrete wearing layer of above-mentioned 40mm wears away upper layer+20mm modified asphalt concrete SMA-10 cutting optimal by 20mmOGFC-13 open gradation drainage asphalt and forms.It is good that this wearing layer has drainage, antiskid, Rut resistance and noise reduction effect, can provide stable, smooth track, meet normal vehicle operation requirement for vehicle.
The thick 2mm of GFRP-composite concrete antiknock pave-load layer surface mount GFRP glass fiber reinforcement thin plate, main component is alkali-free glass fibre.It is high that glass fiber reinforcement thin plate has intensity, and quality is light, high temperature resistant, the performances such as shock resistance.The antiknock of GFRP-composite concrete is mated formation thickness 65mm, inner configuration single-layer bidirectional GFRP muscle net.GFRP muscle has the features such as tensile strength is high, corrosion resistance is excellent, lightweight.GFRP muscle net is positioned in the middle part of GFRP-composite concrete antiknock pave-load layer, and as shown in Figure 2, GFRP muscle diameter 10mm, tensile strength standard value is not less than 600MPa, mesh spacing 150mm × 150mm.
In GFRP-composite concrete antiknock pave-load layer, composite concrete is high-strength and high-ductility Light-weight composite concrete, and unit weight is less than 2000kg/m3, and modulus of elasticity is greater than 27GPa, and compressive strength is greater than 70Pa, and rupture strength is greater than 18MPa, and breaking resistance is greater than 7.5MPa.Introduce steel fibre and glass fiber, efficiently mineral admixture etc. to its tough-increased and reinforced modification; For reducing concrete gravity, suitably add EPS particle, particle diameter is 1mm, and apparent density is approximately 20kg/m3.EPS particle has good energy-absorbing function and antiknock ability, and explosion wave, by the energy after the complex coagulation soil layer containing EPS particle, huge subtracting occurs, and the lower floor in safeguard structure obtains protection.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (11)
1. one kind has the steel box girder bridge floor paving structure of the capability of antidetonance, it is characterized in that, to set up defences in the top of steel box beam orthotropic deck slab (1) water layer (2), tack coat (3) is set in the top of waterproofing course (2), the top of lower tack coat (3) is GFRP-composite concrete antiknock pave-load layer (4), the top of GFRP-composite concrete antiknock pave-load layer (4) is upper tack coat (5), the top of upper tack coat (5) is bituminous concrete wearing layer (6), described GFRP-composite concrete antiknock pave-load layer is made up of the high-strength and high-ductility Light-weight composite concrete layer and GFRP glass fiber reinforcement thin plate configuring GFRP muscle net, described GFRP glass fiber reinforcement thin plate is pasted on described high-strength and high-ductility Light-weight composite concrete layer surface, described high-strength and high-ductility Light-weight composite concrete adopts following proportioning (weight portion):
Cement 489;
Sand 602;
Coarse aggregate 870;
Water 160;
Glass fiber 50;
Steel fibre 150;
EPS particle 20;
SILICA FUME 145;
Early strength and high effect water reduction agent 25;
Expansion agent 30.
2. the steel box girder bridge floor paving structure with the capability of antidetonance according to claim 1, is characterized in that, described bituminous concrete wearing layer wears away upper layer+20mm modified asphalt concrete SMA-10 cutting optimal by 20mmOGFC-13 open gradation drainage asphalt and forms.
3. the steel box girder bridge floor paving structure with the capability of antidetonance according to claim 1, is characterized in that, the thick 2mm of described GFRP glass fiber reinforcement thin plate, main component is alkali-free glass fibre.
4. the steel box girder bridge floor paving structure with the capability of antidetonance according to claim 1, it is characterized in that, the configuration mode of described GFRP muscle net is single-layer bidirectional GFRP glass fiber reinforcement muscle net, described GFRP glass fiber reinforcement muscle net is positioned in the middle part of GFRP-composite concrete antiknock pave-load layer, GFRP glass fiber reinforcement muscle diameter 10mm, tensile strength standard value is not less than 600MPa, and mesh spacing is not more than 150mm × 150mm.
5. the steel box girder bridge floor paving structure with the capability of antidetonance according to claim 1, is characterized in that, described EPS grain diameter is 1mm, and apparent density is approximately 20kg/m
3.
6. a paving method with the steel box girder bridge floor paving structure of the capability of antidetonance according to claim 1, is characterized in that comprising following step of mating formation:
A. Steel Bridge Deck derusting by sandblasting;
B. anticorrosive coating process is carried out to steel bridge deck, spread waterproofing course;
C. waterproofing course is coated with and plants tack coat;
D. colligation GFRP muscle net, then builds high-strength and high-ductility Light-weight composite concrete;
E. vibrate, maintenance completes, layer of concrete upper surface pastes GFRP glass fiber reinforcement thin plate;
F. coarse sand is laid at the contact surface of GFRP thin plate and asphalt mixture surfacing, tack coat in spread;
G. asphalt concrete abrasion layer.
7. the paving method of steel box girder bridge floor paving structure according to claim 6, it is characterized in that lower tack coat is two-layer modified epoxy cementing agent, first floor 0.2 ~ 0.3mm modified epoxy cementing agent, above spreads the alloyed steel sand of 0.3 ~ 0.6mm; The second layer 0.4 ~ 0.6mm modified epoxy cementing agent, above spreads the rubble of 1.18 ~ 2.36mm.
8. the paving method of steel box girder bridge floor paving structure according to claim 6, it is characterized in that, for strengthening the bonding of GFRP thin plate and bituminous concrete wearing layer, the contact surface of GFRP thin plate and asphalt mixture surfacing lays the coarse sand of particle diameter 2 ~ 4.75mm, and binding material is spreading 1kg/m2 modified emulsifying asphalt.
9. the paving method of steel box girder bridge floor paving structure according to claim 6, is characterized in that, high-strength and high-ductility light weight concrete construction employing layering grouting builds forming method with vibration compound.
10. the paving method of steel box girder bridge floor paving structure according to claim 6, is characterized in that, for improving the uniformity of concrete batching system and avoiding segregation, uses super plasticizer and extends mixing time.
The paving method of 11. steel box girder bridge floor paving structures according to claim 6, is characterized in that, for making fiber distribute good and avoid conglomeration, adopting slowly disperse Adding Way when adding fiber.
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| CN201510946264.0A CN105401519B (en) | 2015-12-17 | 2015-12-17 | A kind of steel box girder bridge floor paving structure and method for paving with the capability of antidetonance |
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| CN201510946264.0A CN105401519B (en) | 2015-12-17 | 2015-12-17 | A kind of steel box girder bridge floor paving structure and method for paving with the capability of antidetonance |
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Cited By (10)
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| CN106702889A (en) * | 2017-01-06 | 2017-05-24 | 中北大学 | Bridge pier stud section design having resistance to explosion impact |
| CN106758877A (en) * | 2016-12-29 | 2017-05-31 | 天津市交通科学研究院 | The maintenance reinforcement method of bridge steel and concrete mixing section |
| CN107237256A (en) * | 2017-08-09 | 2017-10-10 | 上海市市政规划设计研究院 | Long-acting endurance bridge deck pavement structure |
| CN107574751A (en) * | 2017-10-09 | 2018-01-12 | 安徽安能建设集团有限公司 | A kind of bridge bridge span structure and its construction method |
| CN107815965A (en) * | 2017-10-25 | 2018-03-20 | 南京林业大学 | A kind of bridge deck pavement structure with reinforced structure |
| CN108086153A (en) * | 2018-01-31 | 2018-05-29 | 太原科技大学 | A kind of bridge deck pavement structure and method for paving of explosion-proof protecting against shock |
| CN108316142A (en) * | 2018-02-06 | 2018-07-24 | 李纪芳 | A kind of paving structure and method of Steel Bridge |
| CN108867369A (en) * | 2018-04-03 | 2018-11-23 | 武汉金麦特材料科技有限公司 | Bridge deck pavement structure |
| CN109778665A (en) * | 2019-03-14 | 2019-05-21 | 山东省交通规划设计院 | A kind of toughness steel reinforced concrete combined bridge deck and its construction method |
| CN112942091A (en) * | 2021-02-01 | 2021-06-11 | 浙江大学 | Integrated lightweight and tough composite bridge deck pavement structure and pavement method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106758877A (en) * | 2016-12-29 | 2017-05-31 | 天津市交通科学研究院 | The maintenance reinforcement method of bridge steel and concrete mixing section |
| CN106702889A (en) * | 2017-01-06 | 2017-05-24 | 中北大学 | Bridge pier stud section design having resistance to explosion impact |
| CN107237256A (en) * | 2017-08-09 | 2017-10-10 | 上海市市政规划设计研究院 | Long-acting endurance bridge deck pavement structure |
| CN107574751A (en) * | 2017-10-09 | 2018-01-12 | 安徽安能建设集团有限公司 | A kind of bridge bridge span structure and its construction method |
| CN107815965A (en) * | 2017-10-25 | 2018-03-20 | 南京林业大学 | A kind of bridge deck pavement structure with reinforced structure |
| CN108086153A (en) * | 2018-01-31 | 2018-05-29 | 太原科技大学 | A kind of bridge deck pavement structure and method for paving of explosion-proof protecting against shock |
| CN108316142A (en) * | 2018-02-06 | 2018-07-24 | 李纪芳 | A kind of paving structure and method of Steel Bridge |
| CN108316142B (en) * | 2018-02-06 | 2019-05-31 | 李纪芳 | A kind of paving structure and method of Steel Bridge |
| CN108867369A (en) * | 2018-04-03 | 2018-11-23 | 武汉金麦特材料科技有限公司 | Bridge deck pavement structure |
| CN109778665A (en) * | 2019-03-14 | 2019-05-21 | 山东省交通规划设计院 | A kind of toughness steel reinforced concrete combined bridge deck and its construction method |
| CN112942091A (en) * | 2021-02-01 | 2021-06-11 | 浙江大学 | Integrated lightweight and tough composite bridge deck pavement structure and pavement method |
| CN112942091B (en) * | 2021-02-01 | 2022-06-17 | 浙江大学 | Integrated light-weight and flexible composite bridge deck pavement structure and pavement method |
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