CN102505641B - Repair reinforcing structure of steel bridge deck and repair reinforcing method of repair reinforcing structure - Google Patents
Repair reinforcing structure of steel bridge deck and repair reinforcing method of repair reinforcing structure Download PDFInfo
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Abstract
The invention discloses a repair reinforcing structure of a steel bridge deck and a repair reinforcing method of the repair reinforcing structure. The repair reinforcing structure comprises the steel bridge deck, and is characterized in that the upper surface of the steel bridge deck is welded with a plurality of longitudinal steel ribs and a plurality of transverse steel ribs, the longitudinal steel ribs and the transverse steel ribs are mutually staggered to form a gridding supporting structure, crushed aggregates are filled in rectangular grooves of the gridding supporting structure, steel cover plates are arranged above the rectangular grooves and are fixedly welded with the longitudinal steel ribs and the transverse steel ribs, the adjacent steel cover plates are connected in a welded manner, epoxy resin cement paste is filled in a gap between the steel bridge deck and each steel cover plate and gaps among the crushed aggregates, and a cold-mixing resin bituminous concrete bridge deck paving layer is paved on the steel cover plates. The repair reinforcing structure of the steel bridge deck has the advantages that the repair reinforcing structure of the steel bridge deck is reliable in quality, convenient in construction, relatively low in comprehensive manufacturing cost and convenient in repair.
Description
Technical field
The present invention relates to a kind of renovation reinforced structure of road surface, especially relate to a kind of renovation reinforced structure and method for repairing and reinforcing thereof of steel bridge deck.
Background technology
China in first mid-term of reform and opening-up starts to build the steel box girder bridge across footpath greatly, due to the expectation deficiency to China Transportation Industry overload situation and the consideration of funds cost aspect originally, the bridge surface armor plate of the steel bridge of building is at that time all thinner, conventionally adopts the steel plate of 12 millimeters thick.The in the situation that of large flow and carrying row over haulage more than ten years, there is prematurely fatigue cracking phenomenon in the bridge surface armor plate of many steel bridges, these cracks are constantly expansion under heavy traffic effect continuously, use safety and the Long Service Life of bridge are seriously affected, also the bridge design that makes to reach 100 years is on the hazard application life, therefore, must carry out reinforcing reparation to this steel bridge construction.
The bridge surface armor plate of existing steel bridge is conventionally connected or is connected by braced structuress such as U-shaped stiffening rib and vertical and horizontal diaphragms in the mode of welding, structure is very complicated, therefore panel is taken off by no means easy from braced structures, not only want long-time close traffic society to be caused to tremendous influence but also be also difficult to economically burden, and these steel bridges are all being undertaken heavy traffic current conventionally, excavate simply the force-bearing situation that deck paving weld crack can not change original structure, often there will be again new crack very soon, be difficult to play the effect of effective reparation.Therefore the method for repairing and reinforcing of, developing the renovation reinforced structure of a kind of reliable in quality, easy construction, comprehensive cost Steel Bridge plate relatively cheap and easy to maintenance and realizing this structure seems day by day urgent.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of holding capacity that improves bridge surface armor plate, and simple in structure, renovation reinforced structure and the method for repairing and reinforcing thereof of easy construction, comprehensive cost steel bridge deck relatively cheap and easy to maintenance.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of renovation reinforced structure of steel bridge deck, comprise bridge surface armor plate, on described bridge surface armor plate, weld many longitudinal steel ribs and the horizontal steel rib of Duo Gen, described longitudinal steel rib and the described interlaced formation grid of horizontal steel rib braced structures, in the rectangular recess of described grid braced structures, be filled with crushed stone aggregate, the rectangular recess top of described grid braced structures is provided with steel deck-plate, described steel deck-plate is welded and fixed with described longitudinal steel rib and described horizontal steel rib respectively, adjacent described steel deck-plate is weldingly connected, space between space between described bridge surface armor plate and described steel deck-plate and described crushed stone aggregate is filled with epoxy resin cement paste, on described steel deck-plate, be equipped with cold mixing retinasphal concrete bridge deck pavement layer.
Described longitudinal steel rib and described horizontal steel rib thickness are 20～30mm, and width is 50～80mm, and the area of described rectangular recess is 8～16m
2, transverse width is 2～4m.
The particle diameter of described crushed stone aggregate is 1～2cm, and described steel deck-plate adopts Q345 bridge steel plate, and thickness is 10～12mm.
Described cold mixing retinasphal rigid pavement wearing layer is made up of following material composition and percentage by weight: retinasphal cementitious matter 5-9%, sandstone mineral aggregate 80-90%, polyester fiber 0.3-0.4%, mineral powder filling materials 4-10%, described retinasphal cementitious matter is formed by petroleum bitumen and epoxy resin and epoxy curing agent allotment.
A method for repairing and reinforcing for steel bridge deck, comprises the following steps:
(1) repair by welding is carried out in the crack of the bridge surface armor plate of steel bridge, then bridge surface armor plate is carried out impeller blasting and carries out preservative treatment;
(2) the longitudinal steel rib many horizontal steel ribs that are parallel to each other of upper surface welding and the Duo Gen of step (1) bridge surface armor plate after treatment being parallel to each other, described horizontal steel rib and the described interlaced formation grid of longitudinal steel rib braced structures;
(3) crushed stone aggregate that is 1～2cm by particle diameter is filled in the rectangular recess of described grid braced structures;
(4) rectangular recess top that will described grid braced structures covers steel deck-plate, and described steel deck-plate and described longitudinal steel rib and described horizontal steel rib are welded and fixed, and adjacent described steel deck-plate is welded to each other connected;
(5) described steel deck-plate is holed and mud jacking joint is installed, epoxy resin cement paste is injected between described sheet-steel cover and described bridge surface armor plate in the mode of mud jacking, the space between described bridge surface armor plate and described steel deck-plate and described crushed stone aggregate space are each other filled up;
(6) after described epoxy resin cement paste curing molding, described mud jacking joint is removed, and with described epoxy resin cement paste, the joint that mud jacking joint is installed is filled and led up, the cold mixing retinasphal concrete bridge deck pavement layer that then on the bridge surface armor plate after reinforcement, making a layer thickness is 3～5cm can form the renovation reinforced structure of steel bridge deck.
Described longitudinal steel rib and described horizontal steel rib thickness are 20～30mm, and width is 50～80mm, and the area of described rectangular recess is 8～16m
2, transverse width is 2～4m.
Described steel deck-plate adopts Q345 bridge steel plate, and thickness is 10～12mm.
Described mud jacking joint comprises the first mud jacking joint with ball valve switch and the second mud jacking joint with ball valve switch, the first described mud jacking joint and the second described mud jacking joint are installed in step (5) on described steel deck-plate, the first described mud jacking joint is connected to pneumatic mortar machine, by the first described pneumatic mortar machine, described epoxy resin cement paste is pressed into slowly, the ball valve switch of the second described mud jacking joint is opened to the air of discharging in described rectangular recess, until the second described mud jacking joint is while gushing out even bubble-free epoxy resin cement paste, close the ball valve switch of the second described mud jacking joint.
Described cold mixing retinasphal rigid pavement wearing layer is made up of following material composition and percentage by weight: retinasphal cementitious matter 5～9%, sandstone mineral aggregate 80～90%, polyester fiber 0.3～0.4%, mineral powder filling materials 4～10%, described retinasphal cementitious matter is formed by petroleum bitumen and epoxy resin and epoxy curing agent allotment.
Compared with prior art, the invention has the advantages that: grid braced structures is set on former bridge surface armor plate and another layer of steel deck-plate is installed, utilize epoxy resin cement paste and the space between former bridge surface armor plate and steel deck-plate is filled up, make it to form a kind of sandwich structure of double-layer plate, then, the cold mixing retinasphal concrete bridge deck pavement layer of making one deck high-modulus on the steel plate after reinforcement.This combining structure has not only improved the integral rigidity of steel plate and deck paving, vehicular load is delivered on former bridge surface armor plate by steel deck-plate and epoxy rubble interlayer, reduce the stress amplitude of former bridge surface armor plate at same vehicular load condition lower stress, adopt the cold mixing retinasphal concrete bridge deck pavement layer that modulus of elasticity is larger simultaneously, extended the tired application life of former bridge surface armor plate.
Therefore the steel bridge panel structure after reliable, the easy construction of the renovation reinforced architecture quality of this steel bridge deck, comprehensive cost are relatively cheap and easy to maintenance and renovation reinforced is jointly stressed with former bridge surface armor plate formation combined system, has effectively improved the integral rigidity of bridge floor; After the simple reparation of former steel bridge deck simultaneously, retained, strengthening construction operation is carried out on former steel bridge deck, constructs relatively simple and quick, and little to social traffic impact, comprehensive cost is relatively low.
Accompanying drawing explanation
Fig. 1 is the structural representation of the renovation reinforced structure of steel bridge deck of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
Certain suspension steel bridge bridge floor is wide 18 meters, and long 900 meters, design service life 100 years, bridge surface armor plate thickness 10-12 millimeter, braced structures adopts U-shaped stiffening rib 7 (as shown in Figure 1).Overload heavy traffic operation only 12 years, there is the through crack that many long narrow tables rice is long in U-shaped stiffening rib place, and rainwater enters the case beam inside under bridge surface armor plate by crack, causes unnecessary corrosion to occur, and bridge and security of operation are all affected.
The renovation reinforced structure of this steel bridge deck as shown in Figure 1, comprise bridge surface armor plate 1, the upper surface of bridge surface armor plate 1 be welded with many longitudinal steel ribs 2 and the horizontal steel rib 2 of Duo Gen (in diagram with the longitudinal steel rib of 2 unified representation and horizontal steel rib), longitudinally steel rib 2 and the horizontal interlaced formation grid of steel rib 2 braced structures, in the rectangular recess 3 of this grid braced structures, be filled with crushed stone aggregate 4, rectangular recess 3 tops of grid braced structures are provided with steel deck-plate 5, steel deck-plate 5 is with longitudinally steel rib 2 and horizontal steel rib 2 are welded and fixed, adjacent steel deck-plate 5 is weldingly connected, space between space and crushed stone aggregate 4 between bridge surface armor plate 1 and sheet-steel cover 5 is filled with epoxy resin cement paste 6, on this steel deck-plate 5, be equipped with cold mixing retinasphal concrete bridge deck pavement layer 8.
In this specific embodiment, longitudinally steel rib 2 and horizontal steel rib 2 thickness are 20～30mm, and width is 50～80mm; The area of rectangular recess 3 is 8～16m
2, transverse width is 2～4m; The particle diameter of crushed stone aggregate 4 is 1～2cm; Steel deck-plate 5 adopts Q345 bridge steel plate, and thickness is 10～12mm.
Cold mixing retinasphal concrete bridge deck pavement layer 8 is made up of following material composition and percentage by weight: retinasphal cementitious matter 5-9%, sandstone mineral aggregate 80-90%, polyester fiber 0.3-0.4%, mineral powder filling materials 4-10%, retinasphal cementitious matter is formed by petroleum bitumen and epoxy resin and epoxy curing agent allotment.Cold mixing retinasphal concrete is consolidated by materials such as retinasphal, sandstone mineral aggregate and polyester fibers, generates that a kind of intensity is high, good toughness and resistant to elevated temperatures special asphalt concrete pavement.
The renovation reinforced structure that realizes above-mentioned steel bridge deck can adopt following method for repairing and reinforcing, comprises the steps:
1) close traffic is excavated existing deck paving, find crack and soldering is carried out in the crack of bridge surface armor plate 1, after welding, paste the thick steel plate bar of 8-12mm in commissure weldering and carry out reinforcement, then bridge surface armor plate 1 is carried out impeller blasting and carries out preservative treatment, for example spray epoxy zinc-rich paint, reach corrosion-resistant effect;
2) the thick 20～30mm of being of upper surface welding through step (1) bridge surface armor plate 1 after treatment, wide be many horizontal steel ribs 2 of 50～80mm and longitudinal steel rib 2, laterally steel rib 2 and longitudinally the grid braced structures of steel rib 2 interlaced formation, rectangular recess 3 areas of grid braced structures are 8～16m
2, transverse width is 2～4m, the degree of depth of rectangular recess 3 equals or is slightly larger than the thickness of longitudinal steel rib 2 or horizontal steel rib 2;
3) in rectangular recess 3, fill up the crushed stone aggregate 4 that particle diameter is 1～2cm, as granite stones;
4) above rectangular recess 3, cover floor space that 10～12mm is thick and be slightly larger than the steel deck-plate 5 of rectangular recess 3, steel deck-plate 5 is welded and fixed with longitudinal steel rib 2 and horizontal steel rib 2 respectively, formation includes the confined space of rubble interlayer, adjacent steel deck-plate 5 is welded to each other and is connected, form the new continuous steel plate of bridge floor, and weld seam is polished with abrasive machine;
5) respectively steel deck-plate 5 is punched and threadings at the diagonal endpoint location of each airtight rectangular recess 3, the first mud jacking joint with ball valve switch and the second mud jacking joint (not shown) are respectively installed, adopt pneumatic mortar machine to pour into high-intensity epoxy resin cement paste 6 in the rubble interlayer of rectangular recess 3, when mud jacking operation, the first mud jacking joint connects pneumatic mortar machine, epoxy resin cement paste is pressed into slowly, the ball valve switch of the second mud jacking joint is opened, make the Bas Discharged in closed interlayer, during uniformly without obvious bubble-free epoxy resin cement paste 6 until the second mud jacking joint gushes out, close the ball valve switch of the second mud jacking joint, keep pneumatic mortar machine pressure 30-60 second,
6) under summer normal temperature condition, epoxy resin cement paste is not more than 72 hours 6 hardening times, and its compressive strength of epoxy concrete being made up of epoxy resin cement paste 6 and rubble after grouting is not less than 30MPa, and compression modulus is not less than 1x10
4mPa, after epoxy resin cement paste 6 solidifies, removes the first mud jacking joint and the second mud jacking joint, and with epoxy resin cement paste 6, the position that the first mud jacking joint and the second mud jacking joint are installed is filled and led up, and forms the renovation reinforced structure of steel bridge deck 1; Pour into the epoxy resin cement paste 6 of grid and fill the compound that crushed stone aggregate 4 forms, the mechanical characteristic after it is curing should meet the regulation of following table 1, thereby meets the needs of the stressed of new steel plate and distortion.
Table 1 epoxy macadam-aggregate mix mechanical property requirements
| Technical requirements | Detection method | |
| Paste resin viscosity, 25 ℃ of Pa.S of trickling property | ≤5 |
| Hardening time 25 ℃ of h | 72≥t≥6 | |
| Compressive strength MPa | ≥30 | T0553-2005 |
| Rupture strength MPa | ≥10 | T0558-2005 |
| -10 ℃ of low-temperature bending limiting strain × 10 -6 | ≥800 | T0728 |
| 25 ℃ of MPa of modulus of elasticity | ≥10000 | T0559-2005 |
7) on the new surface of steel plate of laying, carry out impeller blasting, be then coated with one deck retinasphal waterproofing course, the performance of retinasphal waterproofing course should meet the regulation of table 2.
Table 2 retinasphal waterproofing course technical requirement
8) on the bridge surface armor plate that completes reinforcement recovery, carry out cold mixing retinasphal concrete bridge deck pavement, new bridge floor can be open to traffic.
Cold mixing retinasphal concrete bridge deck pavement layer 8 pavement thickness are 3～5cm.Cold mixing retinasphal concrete is made up of following material composition and percentage by weight: retinasphal cementitious matter 5～9%, sandstone mineral aggregate 80～90%, polyester fiber 0.3～0.4%, mineral powder filling materials 4～10%, wherein retinasphal cementitious matter is formed by petroleum bitumen and epoxy resin and epoxy curing agent allotment.In preparation process, first will after petroleum bitumen and epoxy resin and epoxy curing agent allotment mixing, there is cross-linking and curing reaction, and then the material such as sandstone and polyester fiber is consolidated, generate the bituminous concrete that is different from conventional high temperature resistant heavy duty.The mechanical characteristic of cold mixing retinasphal concrete of the present invention and asphalt concrete is as shown in table 3:
The mechanical property of table 3 cold mixing retinasphal concrete and asphalt concrete
Above-mentioned cold mixing retinasphal concrete is both crisp hard unlike portland cement concrete, also easily deliquescing under high temperature heavy load unlike asphalt concrete; Because petroleum bitumen and epoxy resin and epoxy curing agent can react at normal temperatures, therefore construction is without large-scale hot mixed asphaltic concrete mixing equipment.
Above-mentioned sand material quality should meet code requirement promulgated by the ministries or commissions of the Central Government, and grating is AC-13 level, and performance requirement is shown in Table 4:
The performance requirement of table 4 sand material
The concrete index request of above-mentioned cold mixing retinasphal is shown in Table 5:
The requirement of table 5 retinasphal performance indications
| Pilot project | Unit | Technical requirements | Test method |
| Refer to the dry time (25 ℃) | h | ≥8.0 | Refer to dry method |
| Hardening time (25 ℃) | h | ≤72 | |
| Elongation at break (25 ℃) | ％ | ≥80 | Direct tensile test |
| Breaking strength (25 ℃) | MPa | ≥3.0 | |
| Viscosity | Pa.S | Should be suitable for mix |
Reinforce through this, steel bridge deck composite entity rigidity improves 37 times.Under same wheel load condition, load is delivered to former bridge surface armor plate 1 by the rubble interlayer of sheet-steel cover 5 and infusion epoxy resin cement paste 6, make the stressed strain value of the crack place steel plate after renovation reinforced reduce 72%, can improve 120 years application life of bridge surface armor plate.Reinforce through this, bridge increases constant weight 140kg/m
2, bridge sling load-carrying members are still in the working range in bearing, and recovery scenario is feasible.Through measuring and calculating, implement this renovation reinforced scheme, bridge can keep one side of something to be open to traffic, and repairs approximately six months total duration, and rehabilitation expense needs approximately 6,000 ten thousand yuan, significantly saves than changing bridge surface armor plate.
The present invention is in no way limited to above-mentioned preferred embodiment, but is not deviating under the prerequisite of marrow of the present invention and scope, can in this preferred embodiment, make various modifications and variations, and scope of the present invention is only limited by appending claims.
Claims (4)
1. the renovation reinforced structure of a steel bridge deck, comprise bridge surface armor plate, it is characterized in that: on described bridge surface armor plate, weld many longitudinal steel ribs and the horizontal steel rib of Duo Gen, described longitudinal steel rib and the described interlaced formation grid of horizontal steel rib braced structures, in the rectangular recess of described grid braced structures, be filled with crushed stone aggregate, the rectangular recess top of described grid braced structures is provided with steel deck-plate, described steel deck-plate is welded and fixed with described longitudinal steel rib and described horizontal steel rib respectively, adjacent described steel deck-plate is weldingly connected, space between space between described bridge surface armor plate and described steel deck-plate and described crushed stone aggregate is filled with epoxy resin cement paste, on described steel deck-plate, be equipped with cold mixing retinasphal concrete bridge deck pavement layer, wherein said longitudinal steel rib and described horizontal steel rib thickness are 20～30mm, width is 50～80mm, the area of described rectangular recess is 8～16m
2, transverse width is 2～4m, and the particle diameter of described crushed stone aggregate is 1～2cm, and described steel deck-plate adopts Q345 bridge steel plate, and thickness is 10～12mm.
2. the renovation reinforced structure of a kind of steel bridge deck according to claim 1, it is characterized in that: described cold mixing retinasphal concrete bridge deck pavement layer is made up of following material composition and percentage by weight: retinasphal cementitious matter 5-9%, sandstone mineral aggregate 80-90%, polyester fiber 0.3-0.4%, mineral powder filling materials 4-10%, described retinasphal cementitious matter is formed by petroleum bitumen and epoxy resin and epoxy curing agent allotment.
3. a method for repairing and reinforcing for steel bridge deck claimed in claim 1, is characterized in that comprising the following steps:
(1) repair by welding is carried out in the crack of the bridge surface armor plate of steel bridge, then bridge surface armor plate is carried out impeller blasting and carries out preservative treatment;
(2) the longitudinal steel rib many horizontal steel ribs that are parallel to each other of upper surface welding and the Duo Gen of step (1) bridge surface armor plate after treatment being parallel to each other, described horizontal steel rib and the described interlaced formation grid of longitudinal steel rib braced structures, wherein said longitudinal steel rib and described horizontal steel rib thickness are 20～30mm, and width is 50～80mm;
(3) crushed stone aggregate that is 1～2cm by particle diameter is filled in the rectangular recess of described grid braced structures;
(4) the rectangular recess top of described grid braced structures is covered to steel deck-plate, described steel deck-plate and described longitudinal steel rib and described horizontal steel rib are welded and fixed, the area that adjacent described steel deck-plate is welded to each other to connected, wherein said rectangular recess is 8～16m
2, transverse width is 2～4m, and described steel deck-plate adopts Q345 bridge steel plate, and thickness is 10～12mm;
(5) described steel deck-plate is holed and mud jacking joint is installed, between sheet-steel cover described in epoxy resin cement paste is injected in the mode of mud jacking and described bridge surface armor plate, space between described bridge surface armor plate and described steel deck-plate and described crushed stone aggregate space are each other filled up, wherein said mud jacking joint comprises the first mud jacking joint with ball valve switch and the second mud jacking joint with ball valve switch, the first described mud jacking joint and the second described mud jacking joint are installed on described steel deck-plate, the first described mud jacking joint is connected to pneumatic mortar machine, by the first described pneumatic mortar machine, described epoxy resin cement paste is pressed into slowly, the ball valve switch of the second described mud jacking joint is opened to the air of discharging in described rectangular recess, until the second described mud jacking joint is while gushing out even bubble-free epoxy resin cement paste, close the ball valve switch of the second described mud jacking joint,
(6) after described epoxy resin cement paste curing molding, described mud jacking joint is removed, and the joint that mud jacking joint is installed is filled and led up with described epoxy resin cement paste, then the cold mixing retinasphal concrete bridge deck pavement layer that, on the steel plate after reinforcement, making a layer thickness is 3～5cm can form the renovation reinforced structure of steel bridge deck.
4. the method for repairing and reinforcing of a kind of steel bridge deck according to claim 3, it is characterized in that: described cold mixing retinasphal concrete bridge deck pavement layer is made up of following material composition and percentage by weight: retinasphal cementitious matter 5～9%, sandstone mineral aggregate 80～90%, polyester fiber 0.3～0.4%, mineral powder filling materials 4～10%, described retinasphal cementitious matter is formed by petroleum bitumen and epoxy resin and epoxy curing agent allotment.
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| CN103114525B (en) * | 2013-02-07 | 2016-01-06 | 华南理工大学 | A kind of bridge deck pavement structure and paving method thereof |
| CN103696375B (en) * | 2013-12-25 | 2015-08-19 | 长安大学 | A kind of antiseptic concrete coating prosthetic appliance |
| CN103741599B (en) * | 2014-01-03 | 2015-12-02 | 江苏省交通科学研究院股份有限公司 | A kind of lightweight cold mixing resin steel bridge deck pavement material |
| CN104294770B (en) * | 2014-09-17 | 2016-01-13 | 邵旭东 | Steel-concrete combined structure repairs reinforced structure and the method thereof of seam |
| EP3355259A1 (en) * | 2015-09-24 | 2018-08-01 | Fujifilm Corporation | Repair plan devising assistance system, method, and program |
| CN112081020A (en) * | 2020-09-22 | 2020-12-15 | 深圳市和顺达建筑工程有限公司 | Bridge deck pavement structure suitable for bridge repair and method thereof |
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| JP4650255B2 (en) * | 2005-12-22 | 2011-03-16 | 株式会社大林組 | Steel slab reinforcement structure and existing steel slab reinforcement method |
| CN101121812B (en) * | 2007-07-27 | 2010-09-01 | 华南理工大学 | Epoxy resin base fast repairing material and preparation method thereof |
| CN101235673A (en) * | 2008-01-18 | 2008-08-06 | 河海大学 | Method for rehabilitating concrete surface injury using high-strength abrasion-proof basalt fibre mortar |
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Effective date of registration: 20210809 Address after: 315000 room 16c-5, No. 220, Zhongshan East Road, Haishu District, Ningbo City, Zhejiang Province Patentee after: Ningbo Tianyi Steel Bridge Pavement Engineering Co.,Ltd. Address before: Room 1242, No. 1558, Jiangnan Road, high tech Zone, Ningbo, Zhejiang 315040 Patentee before: NINGBO TIANYI STEEL DECK PAVEMENT TECHNOLOGY Co.,Ltd. |
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