阅读说明：本技术 一种预应力高强再生混合连续刚构桥梁体系及施工工艺 (A kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system and construction technology ) 是由 宋杰 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种预应力高强再生混合连续刚构桥梁体系,包括桥梁本体和预应力系统,所述桥梁本体包括桩基、承台、桥墩和主梁,所述桩基顶部浇筑有承台,所述承台顶部浇筑有桥墩,所述桥墩顶部浇筑有主梁,所述桥墩与所述承台内部交替充填有废旧低等级混凝土和新制高等级混凝土,所述桥墩与所述承台之间通过所述预应力系统固定连接,所述桥墩与所述主梁之间通过所述预应力系统固定连接；本发明通过有效利用再生混凝土,取消桥梁支座,优化结构整体设计,进而提升结构受力性能、减少材料用量、降低建设成本,以实现高效节能、先进环保的技术目标。(The invention discloses a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge systems, including bridge ontology and pre-stress system, the bridge ontology includes pile foundation, cushion cap, bridge pier and girder, cushion cap has been poured at the top of the pile foundation, bridge pier has been poured at the top of the cushion cap, the pier coping portion has poured girder, replace inside the bridge pier and the cushion cap and is filled with waste and old inferior grade concrete and the high-grade concrete of brand-new, it is fixedly connected between the bridge pier and the cushion cap by the pre-stress system, it is fixedly connected between the bridge pier and the girder by the pre-stress system；The present invention by effective use regeneration concrete, cancel bridge pad, optimize structure whole design, and then lift structure stress performance, reduce material utilization amount, reducing the construction costs, to realize the technical goal of energy-efficient, advanced environmental protection.)

1. a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system, including bridge ontology (100) and pre-stress system (200), the bridge ontology (100) includes pile foundation (110), cushion cap (120) bridge pier (130) and girder (140), the pile foundation (110) top has poured cushion cap (120), has poured bridge pier (130) at the top of the cushion cap (120), pours at the top of the bridge pier (130) Girder (140) are built, it is characterised in that: replace inside the bridge pier (130) and the cushion cap (120) and be filled with waste and old inferior grade Concrete (131) and the high-grade concrete of brand-new (132), by described pre- between the bridge pier (130) and the cushion cap (120) Stress system (200) is fixedly connected, and passes through the pre-stress system (200) between the bridge pier (130) and the girder (140) It is fixedly connected.

2. a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system according to claim 1, it is characterised in that: institute Stating waste and old inferior grade concrete (131) is that abandoned building, structures, bridge and road are removed and remove all or part of reinforcing bar Waste and old concrete block later.

3. a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system according to claim 2, it is characterised in that: institute The high-grade concrete of brand-new (132) is stated as natural aggregate concrete or regenerated aggregate concrete, and the high-grade coagulation of the brand-new Native (132) compression strength is greater than 50Mpa.

4. a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system according to claim 3, it is characterised in that: institute Stating pre-stress system (200) includes prestressing force pull end steel deck-plate (201), prestressed anchor fixed end steel deck-plate (202), prestressing force Pull end shear plate (203), prestress anchoraging end shear plate (204), prestressing force end spiral reinforcement (205), prestressing force pull end Anchorage (206), prestressed anchor fixed end anchorage (207), prestress wire positioning device (208), prestress wire bellows (209) and prestress wire (210).

5. a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system according to claim 4, it is characterised in that: institute State bridge pier (130) and the girder (140) phase that prestressing force pull end steel deck-plate (201) is arranged at the top of the girder (140) Meet place, the prestressed stretch-draw end shear plate (203) bottom for reinforce the prestressing force pull end steel deck-plate (201) with it is described Connection between girder (140).

6. a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system according to claim 5, it is characterised in that: institute Prestressed anchor fixed end steel deck-plate (202) is stated to be arranged in the cushion cap (120) bottom, the prestress anchoraging end shear plate (204) Connection for reinforcing between the prestressed anchor fixed end steel deck-plate (202) and the cushion cap (120) bottom.

7. a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system according to claim 6, it is characterised in that: institute Prestressing force pull end anchorage (206) is stated to be arranged at the center of prestressing force pull end steel deck-plate (201) lower surface, it is described pre- Stress anchored end anchorage (207) is arranged at the center of prestressed anchor fixed end steel deck-plate (202) upper surface, the prestressing force Prestressing force end spiral reinforcement is provided at the top of stretching end anchorage (206) bottom and the prestressed anchor fixed end anchorage (207) (205)。

8. a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system according to claim 7, it is characterised in that: institute Prestress wire bellows (209) setting is stated in the inside of the bridge pier (130) and the cushion cap (120), and described pre- is answered Power steel strand wires bellows (209) is buried in the waste and old inferior grade concrete (131) and the high-grade concrete of the brand-new (132) Inside, the prestress wire (210) are plugged on prestress wire bellows (209) inside, the prestress steel Stretching end at the top of twisted wire (210) is anchored in the groove of the prestressing force pull end steel deck-plate (201), the prestress steel twist The anchored end of line (210) bottom is anchored in the groove of the prestressed anchor fixed end steel deck-plate (202)；

Wherein, the prestress wire bellows (209) uses metal or plastic film capicitor, the prestress wire (210) 7 φ of prestressing force, 5 steel strand wires of tension normal intensity 1670/1860Mpa are used.

9. a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system according to claim 8, it is characterised in that: institute It states there are two prestress wire positioning device (208) settings, two prestress wire positioning devices (208) uniformly set It sets between the prestress wire bellows (209).

10. a kind of construction technology of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system according to claim 1, It is characterized in that, comprising the following steps:

S1, pile foundation construction: according to ordinary pile foundation construction method construct, basic procedure include smooth location, the setting-out of stake position, drilling machine just Position, drilling process, pile foundation pore-forming, steel reinforcement cage installation, borehole cleaning, conduit waterproof test, installation conduit, filling concrete, health, Pile crown excavation, which is cut, tests stake with pile crown；

S2, regeneration concrete bearing platform construction and vertical prestressing are embedded: regeneration concrete bearing platform construction is substantially according to cushion cap foundation pit Excavation, fabrication of reinforcing cage and installation, concreting and health step carry out, and fabrication of reinforcing cage and fixing link will answer in advance Power anchored end steel deck-plate, prestress anchoraging end shear plate, prestressed anchor fixed end anchorage are pre-installed to position, concreting and support Raw link, firstly, to pour into the high-grade coagulation of brand-new of about 2cm thickness on the prestressed anchor fixed end steel deck-plate of cushion cap bottom Soil, secondly, the waste and old inferior grade concrete being sufficiently humidified so as to is poured into inside cushion cap, according to the high-grade concrete of brand-new with it is waste and old Inferior grade volume of concrete 1:1 ratio, which alternately pours, vibrates, until pouring to cushion cap top position, it is to be ensured that brand-new height etc. Grade concrete is uniformly mixed with waste and old inferior grade concrete to be integrated；

S3, regeneration concrete bridge pier and the joint Dun Liang construction: regeneration concrete bridge pier and the joint Dun Liang construction substantially according to Template construct and installation, fabrication of reinforcing cage and installation, concreting and health step carry out, fabrication of reinforcing cage and mounting ring Section, vertical prestressing various parts are respectively mounted in place, prestressing force pull end steel deck-plate, prestressed anchor fixed end are specifically included Steel deck-plate, prestressed stretch-draw end shear plate, prestress anchoraging end shear plate, prestressing force end spiral reinforcement, prestressing force pull end Anchorage, prestressed anchor fixed end anchorage, prestress wire positioning device, prestress wire bellows and prestress wire, Concreting and health link pour into the waste and old inferior grade concrete being sufficiently humidified so as to inside bridge pier, according to brand-new height etc. Grade concrete and waste and old inferior grade volume of concrete 1:1 ratio are alternately poured and are vibrated, until pouring to bridge pier and girder phase Connect place's girder top position, it is to be ensured that the high-grade concrete of brand-new is uniformly mixed with waste and old inferior grade concrete and is integrated；

S4, vertical prestressing stretching construction: vertical prestressing is carried out according to two stages of pre- tensioning and whole tensioning, and pre- tensioning should be Recycled concrete strength reaches the 60% when progress of design value, and pre- stretching control force is 781.2Mpa, and whole tensioning is in regeneration coagulation 95% and the elasticity modulus that native intensity reaches design value reach design value 90% after carry out, whole stretching control force be 1302Mpa, When pre- tensioning, bridge pier and cushion cap template should be removed, bridge pier and cushion cap compression should not be caused to hinder, prestressed strand is before use It must make tensioning, anchorage experiment, it is real according to actual measurement pipe friction factor and deviation factor, actual measurement anchor mouth and horn mouth friction loss Situation is surveyed, control stress for prestressing is adjusted, to guarantee that prestressing is accurate；

S5, main girder construction: continuous rigid after the completion of the construction of concrete pier and Dun Liang to be regenerated joint and vertical prestressing tensioning Remaining girder section of structure is executed according to conventional construction method, such as support cast-in-place or cast-in-place cantilever method, to complete continuous rigid The construction of structure bridge system.

Technical field

The present invention relates to traffic infrastructure industry waste and old concrete recycle utilization technology field, specially a kind of prestressing force High-strength regenerative mixed Continuous Rigid-Frame Bridge system and construction technology.

Background technique

With the sustained and rapid development of China's economic, urbanization and process of industrialization are constantly accelerated, and in traditional traffic In infrastructure provision, rough design and barbarous construction exist in large quantities for a long time, consume a large amount of social resources and the energy.Together When, buildings or structures remove, the road surface waste and old concrete reprocessing, generate under concrete production, engineering construction or other situations Increase year by year and cannot efficiently use, destruction is caused to ecological environment.

In conjunction with current low-carbon environment-friendly theory, discarded concrete, which can be turned waste into wealth, becomes the new trend of engineering field.This Project is intended to traditional traffic infrastructure industry, leads in highway, high-speed railway, urban track traffic and municipal traffic etc. In the construction of domain science of bridge building, energy-efficient, regenerated environment protecting advanced design and construction theory are greatly developed --- " prestressing force is high Strong regenerative mixed Continuous Rigid-Frame Bridge system ".Continuous rigid frame system bridge is because its stress performance is high-efficient, durability is good, economical The features such as property is good, the increasingly attention by domestic and international row insider, by the combination with waste and old concrete, further Bridge engineering construction cost is reduced, regenerated environment protecting theory is embodied.

Summary of the invention

The purpose of the present invention is to provide a kind of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system and construction technology, To solve the problems mentioned in the above background technology.

To achieve the above object, the invention provides the following technical scheme: a kind of prestressed high-strength regenerative mixed continuous rigid frame Bridge system, including bridge ontology and pre-stress system, the bridge ontology include pile foundation, cushion cap, bridge pier and girder, the stake Poured cushion cap at the top of base, poured bridge pier at the top of the cushion cap, the pier coping portion has poured girder, the bridge pier with it is described It alternately is filled with waste and old inferior grade concrete and the high-grade concrete of brand-new inside cushion cap, is led between the bridge pier and the girder It crosses the pre-stress system to be fixedly connected, be fixedly connected between the cushion cap and the girder by the pre-stress system.

Wherein, the waste and old inferior grade concrete is that abandoned building, structures, bridge and road are removed and remove whole Or the waste and old concrete block after the reinforcing bar of part.

Wherein, the high-grade concrete of the brand-new is natural aggregate concrete or regenerated aggregate concrete, and the brand-new High-grade concrete crushing strength is greater than 50Mpa.

Wherein, the pre-stress system includes prestressing force pull end steel deck-plate, prestressed anchor fixed end steel deck-plate, prestressing force Pull end shear plate, prestress anchoraging end shear plate, prestressing force end spiral reinforcement, prestressing force pull end anchorage, prestress anchoraging Hold anchorage, prestress wire positioning device, prestress wire bellows and prestress wire.

Wherein, the bridge pier at the top of the girder and the girder joint is arranged in the prestressing force pull end steel deck-plate, The prestressed stretch-draw end shear board bottom portion is used for the connection reinforced between the prestressing force pull end steel deck-plate and the girder.

Wherein, the prestressed anchor fixed end steel deck-plate is arranged in the cushion cap bottom, the prestress anchoraging end shear plate Connection for reinforcing between the prestressed anchor fixed end steel deck-plate and the cushion cap bottom.

Wherein, the prestressing force pull end anchorage is arranged at the center of the prestressing force pull end steel deck-plate lower surface, The prestressed anchor fixed end anchorage is arranged at the center of the prestressed anchor fixed end steel deck-plate upper surface, the prestressed stretch-draw Prestressing force end spiral reinforcement is provided at the top of end anchorage bottom and the prestressed anchor fixed end anchorage.

Wherein, the prestress wire bellows is arranged in the inside of the bridge pier Yu the cushion cap, and described pre- answers Power steel strand wires bellows is buried in the waste and old inferior grade concrete and the high-grade inside concrete of the brand-new, the prestressing force Steel strand wires are plugged on the prestress wire bellows interior, and the stretching end at the top of the prestress wire is anchored at described In the groove of prestressing force pull end steel deck-plate, the anchored end of the prestress wire bottom is anchored at the prestressed anchor fixed end In the groove of steel deck-plate.

Wherein, the prestress wire bellows uses metal or plastic film capicitor, and the prestress wire uses 7 φ of prestressing force, 5 steel strand wires of tension normal intensity 1670/1860Mpa.

Wherein, there are two the prestress wire positioning device settings, two prestress wire positioning devices It is uniformly arranged between the prestress wire bellows.

A kind of construction technology of prestressed high-strength regenerative mixed Continuous Rigid-Frame Bridge system, comprising the following steps:

S1, pile foundation construction: constructing according to ordinary pile foundation construction method, and basic procedure includes smooth location, the setting-out of stake position, bores Machine is in place, drilling process, pile foundation pore-forming, steel reinforcement cage installation, borehole cleaning, conduit waterproof test, install conduit, filling concrete, Health, pile crown excavation cut and test stake with pile crown；

S2, regeneration concrete bearing platform construction and vertical prestressing are embedded: regeneration concrete bearing platform construction is substantially according to cushion cap Excavation of foundation pit, fabrication of reinforcing cage and installation, concreting and health step carry out, fabrication of reinforcing cage and fixing link, will Prestressed anchor fixed end steel deck-plate, prestress anchoraging end shear plate, prestressed anchor fixed end anchorage are pre-installed to position, concreting And health link, firstly, the brand-new that pour into about 2cm thickness on the prestressed anchor fixed end steel deck-plate of cushion cap bottom is high-grade mixed Solidifying soil according to the high-grade concrete of brand-new and gives up secondly, the waste and old inferior grade concrete being sufficiently humidified so as to is poured into inside cushion cap Old inferior grade volume of concrete 1:1 ratio, which alternately pours, vibrates, until pouring to cushion cap top position, it is to be ensured that brand-new is high Grade concrete is uniformly mixed with waste and old inferior grade concrete and is integrated；

S3, regeneration concrete bridge pier and the construction of the joint Dun Liang: regeneration concrete bridge pier and the construction of the joint Dun Liang are basic It is carried out according to template construct and installation, fabrication of reinforcing cage and installation, concreting and health step, fabrication of reinforcing cage and installation Vertical prestressing various parts are respectively mounted in place by link, specifically include prestressing force pull end steel deck-plate, prestress anchoraging Hold steel deck-plate, prestressed stretch-draw end shear plate, prestress anchoraging end shear plate, prestressing force end spiral reinforcement, prestressed stretch-draw Hold anchorage, prestressed anchor fixed end anchorage, prestress wire positioning device, prestress wire bellows and prestress steel twist Line, concreting and health link pour into the waste and old inferior grade concrete being sufficiently humidified so as to inside bridge pier, according to brand-new height Grade concrete and waste and old inferior grade volume of concrete 1:1 ratio are alternately poured and are vibrated, until pouring to bridge pier and girder Joint girder top position, it is to be ensured that the high-grade concrete of brand-new is uniformly mixed with waste and old inferior grade concrete and is integrated；

S4, vertical prestressing stretching construction: vertical prestressing is carried out according to two stages of pre- tensioning and whole tensioning, pre- tensioning The 60% when progress of design value should be reached in recycled concrete strength, pre- stretching control force is 781.2Mpa, and whole tensioning is regenerating 95% and the elasticity modulus that concrete strength reaches design value reach design value 90% after carry out, whole stretching control force is 1302Mpa when pre- tensioning, should remove bridge pier and cushion cap template, should not cause to hinder to bridge pier and cushion cap compression, prestressed strand It must make tensioning, anchorage experiment before, rubbed according to actual measurement pipe friction factor and deviation factor, actual measurement anchor mouth and horn mouth Resistance loss actual measurement situation, adjusts control stress for prestressing, to guarantee that prestressing is accurate；

S5, main girder construction: after the completion of the construction of concrete pier and Dun Liang to be regenerated joint and vertical prestressing tensioning, even Continue remaining girder section of rigid structure to execute according to conventional construction method, such as support cast-in-place or cast-in-place cantilever method, thus the company of completion Continuous rigid frame bridge system construction.

Compared with prior art, the beneficial effects of the present invention are:

1, the present invention is first passed through is used in mixed way by waste and old inferior grade concrete and the high-grade concrete of brand-new, is simplified useless The treatment processes such as broken, screening, purification when old concrete recycles, it is more efficient to utilize waste and old concrete, reduce engineering Construction cost.

2, bridge pier and cushion cap according to the present invention pass through vertical prestressing system and girder is affixed, upper and lower part structure Synergistic effect, greatly improves bridge pier, cushion cap and the bending resistance of girder entirety and torsional rigidity, obtains the drag of structure each section Uniformly fully playing, the suitable bridge of girder increases to bending stiffness, and span ability enhancing, material is fully used, thus Save a large amount of construction materials.

3, the present invention is not needed using support, and no support Continuous Rigid-Frame Bridge system eliminates the bridge operation later period and largely props up Seat detection and the feeding work of dimension have saved support installation with bridge and have tieed up feeding expense, and extension bridge, which is integrally tieed up, supports the period.

4, the present invention cancels bridge pad by effective use regeneration concrete, optimizes structure whole design, and then promoted Structure tension performance reduces material utilization amount, reducings the construction costs, to realize the technical goal of energy-efficient, advanced environmental protection.

Detailed description of the invention

Fig. 1 is the whole schematic view of the front view of the present invention；

Fig. 2 is bridge pier of the present invention and cushion cap schematic view of the front view；

Fig. 3 is bridge pier of the present invention and cushion cap pre-stress system schematic view of the front view；

Fig. 4 is bridge pier of the present invention and cushion cap pre-stress system side structure schematic view；

Fig. 5 is pre-stress system schematic view of the front view of the present invention；

Fig. 6 is the portion A enlarged structure schematic diagram in Fig. 5；

Fig. 7 is prestressing force pull end steel deck-plate schematic view of the front view of the present invention；

Fig. 8 is the portion B enlarged structure schematic diagram in Fig. 5；

Fig. 9 is prestressed anchor fixed end steel deck-plate schematic view of the front view of the present invention.

In Fig. 1-9: 100- bridge ontology；110- pile foundation；120- cushion cap；130- bridge pier；The waste and old inferior grade concrete of 131-； The high-grade concrete of 132- brand-new；140- girder；200- pre-stress system；201- prestressing force pull end steel deck-plate；202- is answered in advance Power anchored end steel deck-plate；203- prestressed stretch-draw end shear plate；204- prestress anchoraging end shear plate；205- prestressing force end spiral shell Revolve reinforcing bar；206- prestressing force pull end anchorage；207- prestressed anchor fixed end anchorage；208- prestress wire positioning device； 209- prestress wire bellows；210- prestress wire.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.