CN207633207U - A kind of ultra-high performance concrete seam construction for assembly hollow slab bridges beam - Google Patents
A kind of ultra-high performance concrete seam construction for assembly hollow slab bridges beam Download PDFInfo
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- CN207633207U CN207633207U CN201721303466.4U CN201721303466U CN207633207U CN 207633207 U CN207633207 U CN 207633207U CN 201721303466 U CN201721303466 U CN 201721303466U CN 207633207 U CN207633207 U CN 207633207U
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 74
- 238000010276 construction Methods 0.000 title abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 106
- 239000010959 steel Substances 0.000 claims abstract description 106
- 230000002787 reinforcement Effects 0.000 claims abstract description 18
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 21
- 238000005452 bending Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 238000010008 shearing Methods 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000002265 prevention Effects 0.000 description 4
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Abstract
The utility model discloses a kind of ultra-high performance concrete seam constructions for assembly hollow slab bridges beam, including the hinge seam between two hollow slab girders and ultra-high performance concrete longitudinal band；Hinge seam forms basic framework by two precast hollow slab beam webs and the pre-buried lateral connection reinforcing bar stretched out by web, longitudinal reinforcement, stirrup, is filled with ultra-high performance concrete；Ultra-high performance concrete longitudinal band includes that precast beam top plate stretches out the framework of steel reinforcement that reinforcing bar, longitudinal reinforcement, transverse steel are formed, and is filled simultaneously with ultra-high performance concrete with hinge seam.Ultra-high performance concrete seam described in the utility model, design by rational reinforcement constitution and cleverly longitudinal band, give full play to the technical advantage that ultra-high performance concrete intensity is high, durability is good, non-coarse aggregate is easily closely knit, the shearing resistance, bending resistance, water-impervious function of seam can be met simultaneously, and there is preferable life-cycle economic benefit.
Description
Technical Field
The utility model relates to a bridge engineering technical field particularly, provides a super high performance concrete joint structure for assembled hollow slab bridge.
Background
The assembly type hollow slab bridge generally has hinge joint falling and water seepage, the transverse integrity of the hollow slab is low, and the bridge deck pavement is damaged, cracked, pushed and other typical diseases. Furthermore, hollow slab design calculations are based on the hinge plate theory, which assumes that the ideal "hinge" only bears shear, neglecting its tension; in fact, the hollow slab hinge joint is subjected to bending moment around the longitudinal direction of the beam besides shearing force, and transverse bending moment when each hollow slab works cooperatively; the calculation theory of the hollow slab and the actual working state of the hinge joint have deviation. In the prior art, the defects caused by the hinge joint are not fundamentally solved by the limitation of the material performance of concrete and the self structure of a hollow slab bridge. In addition, with the development of economic society, the traffic volume, particularly overloaded vehicles, is rapidly increased, and the traffic volume, particularly overloaded vehicles, interacts with long-term adverse factors, so that the development of bridge diseases is promoted.
The ultra-high performance concrete consists of reactive powder concrete and steel fibers, and is a cement-based composite material with ultrahigh strength, ultrahigh toughness and high durability. The hinge joints of the hollow slabs are filled with the ultra-high performance concrete, and the bridge deck is provided with the longitudinal and transverse ultra-high performance concrete strips, so that the transverse connection performance of the hollow slabs can be effectively improved, the stress performance of the joint joints of the hollow slabs is improved, the integral rigidity, the long-term service performance and the durability of the bridge are improved, the superior mechanical property of the ultra-high performance concrete is fully exerted, and the whole service life cost of the hollow slab bridge is reduced. Only shear forces are transmitted as opposed to conventional hinge joint designs and are therefore referred to as joints.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can bear the shear force simultaneously, moment of torsion, horizontal moment of flexure and prevention of seepage water be used for the seam structure of assembled hollow slab bridge, through reasonable reinforcing bar structure and the vertical strip of ingenious design, full play ultra high performance concrete intensity is high, the durability is good, do not have the easy closely knit technical advantage of coarse aggregate, can satisfy shear, bending resistance, the prevention of seepage water function of seam simultaneously, have better atress performance, constructability and life-cycle economic benefits.
The utility model provides a technical scheme as follows:
an ultra-high performance concrete joint structure for fabricated hollow slab bridges, comprising:
a hinge joint (11) and an ultra-high performance concrete longitudinal strip (12) between the two prefabricated hollow plate beams; wherein,
the hinge joint (11) comprises a hinge joint frame and ultrahigh-performance concrete filled in the hinge joint frame; the hinge joint frame is composed of webs of two prefabricated hollow plate beams (1), hinge joint transverse connecting steel bars (2) extending out of the webs, hinge joint longitudinal steel bars (4) and hinge joint stirrups (5); the hinge joint transverse connecting steel bars (2) are door-shaped steel bars and are arranged in an array shape; 2-3 longitudinal hinge joint reinforcing steel bars (4) are transversely and symmetrically arranged at the bottom layer of the hinge joint (11), and 1 longitudinal hinge joint reinforcing steel bar (4) is arranged at other positions;
the ultra-high performance concrete longitudinal strip (12) comprises a longitudinal strip steel reinforcement framework and ultra-high performance concrete filled in the longitudinal strip steel reinforcement framework; the longitudinal strip steel bar framework is composed of prefabricated beam top plate extending steel bars (3), longitudinal strip longitudinal steel bars (6) and longitudinal strip transverse steel bars (7), and the longitudinal strip longitudinal steel bars (6) are located on the lower layer of the longitudinal strip transverse steel bars (7); the longitudinal strip steel reinforcement framework and the hinge joint framework form a joint integral steel reinforcement framework.
Preferably, the diameter of the hinge joint transverse connecting steel bar (2) is 10-12 mm, and the distance between two branches in the shape of a Chinese character 'men' is 10-20 cm; the vertical distance between the transverse connecting steel bars (2) of the hinge joint is 12 cm-16 cm, and the longitudinal distance is 30 cm-42 cm; the vertical height difference of the hinge joint transverse connecting steel bar (2) is at least 1 cm-1.5 cm. Through the setting of above-mentioned hinge seam transverse connection reinforcing bar, not only can improve seam faying face shear strength, make faying face shear ductility increase simultaneously, and construction convenience.
Preferably, the diameter of the longitudinal hinge joint reinforcing steel bar (4) is 6-12 mm, and the vertical distance is 12-16 cm.
Preferably, the diameter of the hinge joint stirrup (5) is 6-12 mm, and the longitudinal distance is 30-42 cm.
Preferably, the width of the ultra-high performance concrete longitudinal strip (12) is 0.3-0.8 m, the thickness of the ultra-high performance concrete longitudinal strip is 3.5-5.0 cm, and the width of the ultra-high performance concrete longitudinal strip (12) is 2-3 times of the width of the hinge joint (11). According to the structural scheme of the longitudinal strips, the requirements on strength and rigidity can be met, and due to the excellent durability of the ultra-high performance concrete, the water seepage prevention function of the joint is realized.
Preferably, the diameter of the precast beam top plate extending steel bar (3) is 10-20 mm within the width range of the ultra-high performance concrete longitudinal strip (12), the extending length is 5-7 cm, and the longitudinal distance and the transverse distance are both 12-22 cm.
Preferably, the diameters of the longitudinal reinforcing steel bars (6) of the longitudinal strips and the transverse reinforcing steel bars (7) of the longitudinal strips are 6-12 mm, and the distance between the longitudinal reinforcing steel bars and the transverse reinforcing steel bars is 3-20 cm; and the transverse reinforcing steel bar (7) of the longitudinal strip extends out of the longitudinal strip (12) by 10-20 cm. According to the scheme for arranging the longitudinal strip steel bars, the requirements on the strength and the rigidity of the joint can be well met.
Compared with the prior art, the utility model has the advantages of:
the utility model provides a be applied to assembled hollow slab bridge's super high performance seam has adopted novel material ultra high performance concrete, has compensatied that ordinary concrete intensity is low, bonding strength is low, the relatively poor shortcoming of durability, satisfy many-sided functional requirements such as seam position shear, bending resistance, prevention of seepage water, improved the articulated application current situation that calculates theory and actual stress state of hollow slab and have the deviation, avoided diseases such as traditional hollow slab bridge hinge joint breakage, drop, infiltration, reduce hollow slab bridge life-span cost.
Two, use the utility model provides a hollow slab bridge of integration hollow slab bridge structures of ultra-high performance seam tradition relatively hollow slab bridge, the ultra-high performance concrete seam and the horizontal strip that become netted integration through the space between each precast beam are connected, have improved the transverse connection performance between the roof beam, and bridge integral rigidity improves, has improved long-term performance of bridge and durability.
Three, use the utility model provides an empty core plate bridge structures of wholeization of ultra high performance seam, bridge integral rigidity improves, has improved bridge deck pavement layer stress state, can effectively solve ordinary concrete bridge deck slab and easily crack and pitch pavement easily damaged difficult problem.
To sum up, the utility model discloses a technical scheme is used for the empty core plate bridge of assembled completely, with this type of bridge type fashioned construction technique and equipment and the utility model discloses combine together, can guarantee better the utility model discloses the feasibility and the efficiency of construction that bridge structure and construction were built.
Drawings
Fig. 1 is a front view of the ultra-high performance concrete joint along the cross section in the embodiment of the present invention.
Fig. 2 is a cross-sectional view taken at a-a in fig. 1.
Fig. 3 is a cross-sectional view at B-B in fig. 1.
Fig. 4 is a front view along the cross section of the integrated hollow slab bridge structure based on the ultra-high performance concrete connection in the embodiment of the present invention.
Fig. 5 is a cross-sectional view taken at a-a in fig. 4.
Fig. 6 is a cross-sectional view at B-B in fig. 4.
Description of reference numerals:
1. prefabricating a hollow plate girder; 2. embedding transverse connecting steel bars of the hinge joints; 3. embedding a top plate extending out of a steel bar; 4. hinging longitudinal steel bars; 5. hinging and sewing the stirrup; 6. longitudinal strip longitudinal reinforcement; 7. longitudinal strip transverse reinforcement; 8. ultra-high performance concrete; 9. transverse stripe transverse steel bars; 10. transverse strip longitudinal reinforcement; 11. hinging and sewing; 12. a longitudinal strip; 13. a transverse strip.
Detailed Description
To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below. Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Example (b): a ultra high performance concrete joint structure for assembled hollow slab bridge
As shown in fig. 1 to 3, the utility model discloses an ultra high performance concrete joint structure for assembled hollow slab bridge, including hinge joint 11 and the vertical strip 12 of ultra high performance concrete between two hollow slab beams. The hinge joint 11 is formed by two prefabricated hollow plate beams 1 web plates, embedded transverse connecting steel bars 2 extending from the web plates, longitudinal steel bars 4 and stirrups 5 to form a basic frame, and the frame is filled with ultrahigh-performance concrete 8. The ultra-high performance concrete longitudinal strip 12 comprises a steel bar framework formed by extending steel bars 3, longitudinal steel bars 6 and transverse steel bars 7 out of the top plate of the precast beam 1, and is filled with ultra-high performance concrete 8 together with the hinge joint.
The ultra-high performance concrete joint of the embodiment is characterized in that the structure of the prefabricated hollow slab beam 1 is matched with the structure of the hinge joint 11, and the side surfaces of two webs of the prefabricated hollow slab beam 1 are connected with the hinge joint 11.
In the ultra-high performance concrete joint of the embodiment, the prefabricated hollow slab beam 1 is provided with the hinge joint transverse connecting steel bars 2 extending out of the joint face, the hinge joint transverse connecting steel bars 2 are in a 'door' shape (see fig. 3) and are arranged in an array shape, in the embodiment, the diameter of each hinge joint transverse steel bar 2 is 10mm, the distance between two branches is 15cm, the vertical distance is 12cm, the longitudinal distance is 35 cm., the beam is conveniently erected, the vertical height difference of the hinge joint transverse steel bars on the two sides of the hollow slab prefabricated beam is at least 1.2cm, and the inclination angle α of the transverse connecting steel bars is 4 degrees.
According to the ultrahigh-performance concrete joint, the diameter of the longitudinal steel bars 4 of the hinge joint is 10mm, the vertical distance of the longitudinal steel bars is 12cm, the longitudinal steel bars 2 are transversely and symmetrically arranged on the bottom layer of the hinge joint, and 1 longitudinal steel bar 4 is arranged in the rest positions.
In the ultra-high performance concrete joint of the embodiment, the diameter of the hinge joint stirrup 5 is 10mm, and the longitudinal distance is 35 cm.
In the ultra-high performance concrete joint of the embodiment, the width of the ultra-high performance concrete longitudinal strip 12 is 2 times of the width of the hinge joint 11, the width is 0.43m, and the thickness is 4.0 cm.
According to the ultrahigh-performance concrete joint, the prefabricated hollow slab beam 1 is provided with the connecting steel bars 3 extending out of the top plate within the width range of the longitudinal strip 12 of the ultrahigh-performance concrete, the diameter of each steel bar is 10mm, the extending length of each steel bar is 6cm, and the longitudinal distance of each steel bar is 20 cm.
In the ultra-high performance concrete joint of the embodiment, the longitudinal steel bars 6 and the transverse steel bars 7 are arranged in the longitudinal ultra-high performance concrete longitudinal strips 12, and the longitudinal steel bars 6 are arranged at the lower layers of the transverse steel bars 7. The diameters of the longitudinal steel bars 6 and the transverse steel bars 7 are both 10mm, and the distances between the longitudinal steel bars and the transverse steel bars are respectively 10cm and 15 cm; and the transverse bars 7 extend 15cm from the longitudinal strips 12.
In the ultra-high performance concrete joint of the embodiment, the longitudinal steel bars 6 and the transverse steel bars 7 in the ultra-high performance concrete longitudinal strips 12 and the prefabricated beam top plate extending steel bars 3 form a longitudinal strip steel bar framework, and the longitudinal strip steel bar framework, the hinge joint transverse connecting steel bars 2 and the longitudinal steel bars 4 form a joint integral steel bar framework through the stirrups 5; and the hinge joint structure 11 and the longitudinal strips 12 are filled with ultra-high performance concrete 8.
As shown in fig. 1 to 6, the integrated hollow slab bridge structure connected by the ultra-high performance concrete in the present embodiment is formed by connecting three prefabricated hollow slab beams 1 in the transverse direction of the bridge through two ultra-high performance concrete joints and five ultra-high performance concrete transverse strips 13.
In the bridge structure of the embodiment, the transverse ultra-high performance concrete strips 13 are arranged for 5 times along the longitudinal direction of the bridge, and the length is the same as the width of the bridge deck. The transverse strips were 4.0cm thick and 0.86m wide.
In the bridge structure of the embodiment, the prefabricated hollow slab beam 1 is provided with the connecting steel bars 3 extending from the top plate within the width range of the ultra-high performance concrete transverse strip 13, the diameter of the steel bars is 10mm, the extending length of the steel bars is 6cm, and the longitudinal distance and the transverse distance of the steel bars are 20 cm.
In the bridge structure of the embodiment, the ultra-high performance concrete transverse strip 13 is provided with the longitudinal steel bar 10 and the transverse steel bar 9, and the longitudinal steel bar 10 is arranged at the lower layer of the transverse steel bar 9. The diameters of the longitudinal steel bars 10 and the transverse steel bars 9 are 10mm, and the distances between the longitudinal steel bars and the transverse steel bars are 10cm and 15cm respectively; and the longitudinal reinforcing bars 10 are extended by 15cm from the transverse strips 13.
In the bridge structure of the embodiment, the joints of the transverse strips 13 and the hollow slab are simultaneously filled and poured with the ultra-high performance concrete 8, and the longitudinal strips 12 and the transverse strips 13 are staggered with each other to form a net structure. In the crossing area of the longitudinal strips 12 and the transverse strips 13, the transverse steel bars 7 of the longitudinal strips 12 or the longitudinal steel bars 10 of the transverse strips 13 are eliminated, as shown in fig. 6.
The construction method of the integrated hollow slab bridge structure based on the ultra-high performance concrete connection in the actual engineering application comprises the following steps:
it should be noted that, in the following construction steps, the terms "left side, right side, left side and right side" respectively represent two sides of the beam, and the terms "left side" and "right side" and "left side" and "right side" may be interchanged in the whole construction step.
(a) Manufacturing a prefabricated hollow slab beam template, binding reinforcing steel bars, bending the part of the transverse hinge joint connecting reinforcing steel bars extending out of the connecting surface into a shape with the same inclination as that of the web plate, and attaching the web plate template; pouring common concrete, maintaining, (if the prestressed concrete hollow slab beam is adopted, the prestressed construction is completed), and storing the beam; because the vertical position of the transverse connecting steel bar of the pre-embedded hinge joint of the prefabricated hollow slab beam is closely related to the smooth beam erection, the vertical position of the transverse connecting steel bar of the hinge joint at the left side of the prefabricated beam is 1 cm-1.5 cm higher than that at the right side, and the tolerance error is not more than 0.5 cm;
(b) chiseling concrete around the bent hinge joint transverse connecting steel bar, roughening a joint surface, and roughening the surface of the top surface of the hollow plate;
(c) straightening the transverse connecting reinforcing steel bars of the hinge joints of the bending sections, wherein the transverse connecting reinforcing steel bars of the hinge joints of the bending sections are inclined upwards, the reinforcing steel bars on the right side of the prefabricated beam are inclined downwards, and the inclination angle α is 1.2 x (phi/2)/D (wherein phi is the diameter of the reinforcing steel bars, and D is the distance by which the transverse connecting reinforcing steel bars of the hinge joints extend out of a joint surface), wherein the tolerance error is not more than α/2;
(d) binding longitudinal steel bars of the hinge joints: binding or spot-welding the longitudinal steel bars of the hinge joints on the upper parts of the transverse connecting steel bars of the hinge joints, wherein if the binding is firm, the longitudinal steel bars are prevented from shifting when the ultrahigh-performance concrete of the hinge joints is hoisted or poured; it should be noted that if the transverse positions of the hinge joint transverse connecting steel bars are overlapped with each other, the longitudinal steel bars are bound or spot-welded on the hinge joint transverse connecting steel bars extending out of the hinge joint right side beam body, or else, the longitudinal steel bars are bound or spot-welded on the transverse connecting steel bars extending out of the beam body at a shorter distance;
(e) binding hinge joint stirrups: binding or spot-welding the hinge joint stirrup to the longitudinal steel bar, wherein if the binding is firm, the stirrup is prevented from shifting when the hinge joint ultrahigh-performance concrete is hoisted or poured;
(f) hoisting the prefabricated hollow plate beam, firstly hoisting a first beam on the left side, when a second beam is hoisted to be higher than the vertical elevation of the first beam which is already installed by 12-16 cm (namely the vertical distance of the transverse connecting reinforcing steel bar of the hinge joint), slowly moving the beam body to the left side to a designed position, then slowly moving the beam body downwards to the designed elevation, and sequentially installing other prefabricated beam bodies from the left side to the right side according to the method;
(g) manufacturing longitudinal strip templates and transverse strip templates, and binding longitudinal steel bars and transverse steel bars of the longitudinal strips and the transverse strips respectively;
(h) wetting the joint surface of the new concrete and the old concrete, pouring the ultrahigh-performance concrete of the hinge joint, the longitudinal strip and the transverse strip, and finishing maintenance;
(i) and binding bridge deck reinforcing steel bars, pouring common bridge deck concrete, and completing construction of auxiliary facilities such as bridge deck pavement and the like.
Above-mentioned the utility model discloses an in the work progress of hollow slab bridge structure of wholeization based on ultra high performance concrete connection, all can adopt the construction equipment and the construction process of traditional hollow slab bridge structure, need not to increase new equipment and drop into, also need not to carry out new technical training to the constructor, construction method is simple and convenient, swift, rapid, to guarantee the time limit for a project, improve the efficiency of construction and have the significance.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (7)
1. An ultra-high performance concrete joint structure for an assembled hollow slab bridge, comprising:
a hinge joint (11) and an ultra-high performance concrete longitudinal strip (12) between the two prefabricated hollow plate beams;
the hinge joint (11) comprises a hinge joint frame and ultrahigh-performance concrete filled in the hinge joint frame; the hinge joint frame is composed of webs of two prefabricated hollow plate beams (1), hinge joint transverse connecting steel bars (2) extending out of the webs, hinge joint longitudinal steel bars (4) and hinge joint stirrups (5); the hinge joint transverse connecting steel bars (2) are door-shaped steel bars and are arranged in an array shape; 2-3 longitudinal hinge joint reinforcing steel bars (4) are transversely and symmetrically arranged at the bottom layer of the hinge joint (11), and 1 longitudinal hinge joint reinforcing steel bar (4) is arranged at other positions;
the ultra-high performance concrete longitudinal strip (12) comprises a longitudinal strip steel reinforcement framework and ultra-high performance concrete filled in the longitudinal strip steel reinforcement framework; the longitudinal strip steel bar framework is composed of prefabricated beam top plate extending steel bars (3), longitudinal strip longitudinal steel bars (6) and longitudinal strip transverse steel bars (7), and the longitudinal strip longitudinal steel bars (6) are located on the lower layer of the longitudinal strip transverse steel bars (7); the longitudinal strip steel reinforcement framework and the hinge joint framework form a joint integral steel reinforcement framework.
2. The ultra-high performance concrete joint structure for the fabricated hollow slab bridge according to claim 1, wherein the diameter of the hinge joint transverse connecting bar (2) is 10-12 mm, and the distance between two branches of the portal shape is 10-20 cm; the vertical distance between the transverse connecting steel bars (2) of the hinge joint is 12 cm-16 cm, and the longitudinal distance is 30 cm-42 cm; the vertical height difference of the hinge joint transverse connecting steel bar (2) is at least 1 cm-1.5 cm.
3. The ultra high performance concrete joint structure for the fabricated hollow slab bridge according to claim 2, wherein the diameter of the hinge joint longitudinal reinforcement (4) is 6-12 mm, and the vertical distance is 12-16 cm.
4. The ultra high performance concrete joint structure for the fabricated hollow slab bridge according to claim 3, wherein the hinge joint stirrup (5) has a diameter of 6 to 12mm and a longitudinal distance of 30 to 42 cm.
5. The ultra high performance concrete joint structure for the fabricated hollow slab bridge according to any one of claims 1 to 4, wherein the width of the ultra high performance concrete longitudinal strips (12) is 0.3-0.8 m, the thickness is 3.5-5.0 cm, and the width of the ultra high performance concrete longitudinal strips (12) is 2-3 times of the width of the hinge joints (11).
6. The ultra high performance concrete joint structure for the fabricated hollow slab bridge according to claim 5, wherein the precast beam top plate protruding reinforcing steel bars (3) have a diameter of 10mm to 20mm, a protruding length of 5cm to 7cm, and a longitudinal and transverse distance of 12cm to 22cm within the width range of the ultra high performance concrete longitudinal strips (12).
7. The ultra high performance concrete joint structure for the fabricated hollow slab bridge according to claim 6, wherein the longitudinal strip longitudinal reinforcements (6) and the longitudinal strip transverse reinforcements (7) have a diameter of 6-12 mm and a spacing of 3-20 cm; and the transverse reinforcing steel bar (7) of the longitudinal strip extends out of the longitudinal strip (12) by 10-20 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721303466.4U CN207633207U (en) | 2017-10-10 | 2017-10-10 | A kind of ultra-high performance concrete seam construction for assembly hollow slab bridges beam |
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| CN201721303466.4U CN207633207U (en) | 2017-10-10 | 2017-10-10 | A kind of ultra-high performance concrete seam construction for assembly hollow slab bridges beam |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806008A (en) * | 2017-10-10 | 2018-03-16 | 山西省交通科学研究院 | A kind of integration hollow slab bridge girder construction and its construction method based on ultra-high performance concrete connection |
| CN109403214A (en) * | 2018-11-21 | 2019-03-01 | 三峡大学 | A kind of the band transversely and horizontally hinge at shear reinforcement and default slot interface seam construction and its construction method |
| CN109403215A (en) * | 2018-11-21 | 2019-03-01 | 三峡大学 | It is a kind of to lay the concrete hinge seam construction and its construction method for intersecting shear reinforcement |
| CN112049026A (en) * | 2020-09-02 | 2020-12-08 | 湖南大学 | Prefabricated beam section, high early strength UHPC wet joint and long-span beam bridge suspension splicing construction method thereof |
| CN112281627A (en) * | 2020-09-21 | 2021-01-29 | 宁波交通工程建设集团有限公司 | Steel bar joint structure of prefabricated section T beam |
| CN114293480A (en) * | 2021-12-23 | 2022-04-08 | 浙江正方交通建设有限公司 | Comprehensive reinforcing structure for active hollow slab bridge and construction method |
| CN116892178A (en) * | 2023-09-11 | 2023-10-17 | 湖南大学 | Reinforcing method of hollow slab girder bridge based on UHPC |
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2017
- 2017-10-10 CN CN201721303466.4U patent/CN207633207U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806008A (en) * | 2017-10-10 | 2018-03-16 | 山西省交通科学研究院 | A kind of integration hollow slab bridge girder construction and its construction method based on ultra-high performance concrete connection |
| CN109403214A (en) * | 2018-11-21 | 2019-03-01 | 三峡大学 | A kind of the band transversely and horizontally hinge at shear reinforcement and default slot interface seam construction and its construction method |
| CN109403215A (en) * | 2018-11-21 | 2019-03-01 | 三峡大学 | It is a kind of to lay the concrete hinge seam construction and its construction method for intersecting shear reinforcement |
| CN112049026A (en) * | 2020-09-02 | 2020-12-08 | 湖南大学 | Prefabricated beam section, high early strength UHPC wet joint and long-span beam bridge suspension splicing construction method thereof |
| CN112281627A (en) * | 2020-09-21 | 2021-01-29 | 宁波交通工程建设集团有限公司 | Steel bar joint structure of prefabricated section T beam |
| CN112281627B (en) * | 2020-09-21 | 2021-05-11 | 宁波交通工程建设集团有限公司 | Steel bar joint structure of prefabricated section T beam |
| CN114293480A (en) * | 2021-12-23 | 2022-04-08 | 浙江正方交通建设有限公司 | Comprehensive reinforcing structure for active hollow slab bridge and construction method |
| CN114293480B (en) * | 2021-12-23 | 2024-05-24 | 浙江正方交通建设有限公司 | Active hollow slab bridge comprehensive reinforcement structure and construction method |
| CN116892178A (en) * | 2023-09-11 | 2023-10-17 | 湖南大学 | Reinforcing method of hollow slab girder bridge based on UHPC |
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