CN114197335A - External prestress reinforcing structure of hollow slab beam bridge and construction method - Google Patents
External prestress reinforcing structure of hollow slab beam bridge and construction method Download PDFInfo
- Publication number
- CN114197335A CN114197335A CN202111623318.1A CN202111623318A CN114197335A CN 114197335 A CN114197335 A CN 114197335A CN 202111623318 A CN202111623318 A CN 202111623318A CN 114197335 A CN114197335 A CN 114197335A
- Authority
- CN
- China
- Prior art keywords
- hollow slab
- main body
- bridge main
- bridge
- slab bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 title description 9
- 239000004567 concrete Substances 0.000 claims abstract description 39
- 238000004873 anchoring Methods 0.000 claims abstract description 22
- 230000002787 reinforcement Effects 0.000 claims abstract description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 8
- 210000002435 tendon Anatomy 0.000 claims description 29
- 239000010410 layer Substances 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000004570 mortar (masonry) Substances 0.000 claims description 13
- 229920000642 polymer Polymers 0.000 claims description 13
- 239000011241 protective layer Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 230000035515 penetration Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an external prestress reinforcement structure of a hollow slab girder bridge and a construction method thereof, belonging to the technical field of hollow slab bridge building structures, the structure comprises a hollow slab bridge main body, the middle part of which is provided with a cavity, high-strength bolts penetrate through the two sides of the hollow slab bridge main body from top to bottom, concrete supporting blocks are poured and filled at the corresponding penetration parts of the high-strength bolts at the two sides of the cavity, the concrete supporting blocks are provided with a plurality of vertical reinforcing steel bars which are distributed at intervals, the bottom of the hollow slab bridge main body is longitudinally provided with external prestress reinforcing steel bars, a steering block is arranged between the middle part of the external prestress reinforcing steel bars and the bottom surface of the hollow slab bridge main body in a cushioning manner, the two ends of the external prestress reinforcing steel bars are pre-tightened and fixed through anchoring devices, and the anchoring devices are simultaneously locked and fixed by the high-strength bolts, and the invention can realize the longitudinal prestress reinforcement of a middle plate of the hollow slab bridge; the method has the advantages of small damage degree to the plate structure layer, high construction efficiency and reliable anchoring performance.
Description
Technical Field
The invention relates to the technical field of hollow slab bridge road building structures, in particular to an external prestress reinforcing structure of a hollow slab bridge and a construction method.
Background
The hollow slab beam bridge has the advantages of simple structural form, definite stress, good economy, convenience for mass production in prefabricating plants and the like, and is widely applied to medium and small span bridges. The external prestress technology is applied to the reinforcement of various bridges in a mature way, but the bottom plate of the hollow slab beam is small in thickness and cannot bear the concentrated force generated by the prestressed anchoring end; and the internal space of the hollow slab is narrow, and the two hollow slabs are connected through the hinge joint, so that anchors cannot be installed on the left and right sides of the hollow slabs, and the application of longitudinal external prestress reinforcement on the hollow slab bridge is always in a state before stagnation.
Therefore, the invention patent publication number of 'external prestress reinforcement structure and method of prestressed concrete slab girder of highway bridge' published 6-5-6-2020 is as follows: CN111236095A, chiseling the inclined hole from top to bottom with the hollow slab, anchor prestressing tendons on the bridge deck pavement layer, realize external prestressing force and use.
However, the above structure has drawbacks:
1. in actual engineering, a chute chiseled from the top of the plate to the bottom of the plate with a certain length has the defects of construction technology and higher difficulty.
2. The external prestressed tendons are anchored on the fixed beam pavement layer, and the thickness of the pavement layer of the plate-girder bridge is generally 8cm, and the bridge pavement layer is only provided with a small amount of reinforcing mesh sheets, even the bridge pavement layer is made of plain concrete, so that the problem of anchoring failure can be caused when bearing large anchoring concentrated force.
3. Under the repeated direct action of the automobile load, the anchorage device can slide, and the steel strand is extruded to cause the problems of sliding, wire breaking and the like.
4. The secondary reinforcement of the technology is inconvenient.
The thickness of the top plate of the hollow slab beam is small, the cross section of the hollow slab is hollowed in different degrees, and the problems of cracking and the like can occur under concentrated force under an anchor.
Based on the structure, the invention designs an external prestress reinforcing structure of a hollow slab girder bridge and a construction method, so as to solve the problems.
Disclosure of Invention
The invention aims to provide an external prestress reinforcing structure of a hollow slab girder bridge and a construction method, so as to solve the technical problems.
In order to realize the purpose, the invention provides the following technical scheme: the utility model provides an external prestressing force reinforced structure of hollow slab girder bridge, includes that the middle part is equipped with the hollow slab bridge main part of cavity, wear to establish high strength bolt from top to bottom in the both sides of hollow slab bridge main part, the cavity both ends correspond both sides high strength bolt runs through the department and pours to pack and have the concrete supporting shoe, the concrete supporting shoe is provided with a plurality of interval distribution's vertical reinforcing bar, the bottom of hollow slab bridge main part vertically is provided with external prestressing tendons, external prestressing tendons's middle part with set up between the bottom surface of hollow slab bridge main part and turn to the piece, external prestressing tendons's both ends are all fixed through anchor pretension, anchor is by high strength bolt locking simultaneously.
Preferably, pouring rubber baffles are arranged on two sides of the concrete supporting block, and baffle limiting steel bars vertically penetrating through the hollow slab bridge main body are arranged on the outer sides of the pouring rubber baffles.
Preferably, the upper side wall and the lower side wall of the concrete supporting block are respectively provided with a bolt hole and a square operation hole, and the high-strength bolt penetrates through the bolt hole and the square operation hole.
Preferably, the anchoring device is of an L-shaped plate element structure, one side wall of the L-shaped plate element structure is attached to the bottom surface of the hollow slab bridge main body and is fixedly fastened by the high-strength bolt in a penetrating mode, and the other side wall of the L-shaped plate element structure is perpendicular to the bottom surface of the hollow slab bridge main body and is anchored by an anchorage device after being penetrated by the external prestressed tendons.
Preferably, the top of the hollow slab bridge main body is provided with a bridge deck pavement layer, and the top ends of the high-strength bolts are embedded in the bridge deck pavement layer.
Preferably, a polymer mortar protective layer is arranged at the bottom of the hollow slab bridge main body, and the external prestressed tendons are embedded in the polymer mortar protective layer.
Preferably, a pre-tightening spring penetrates through a screw rod of the high-strength bolt, and the pre-tightening spring cushion is arranged at the bottom of the hollow slab bridge main body.
A construction method of an external prestress reinforcing structure of a hollow slab girder bridge comprises the following construction steps:
step S1: determining the corresponding position of the anchoring device on the hollow slab bridge main body, and vertically chiseling the bridge deck pavement layer of the hollow slab bridge main body to the surface of the plate body structure layer of the hollow slab bridge main body;
step S2: vertically cutting bolt holes with the diameters matched with the screw diameters of the high-strength bolts downwards, installing upper backing plates and the high-strength bolts, and repairing a bridge deck pavement layer;
step S3: drilling holes at corresponding positions from bottom to top, wherein the hole diameter is adaptive to the diameter of the baffle limiting steel bar, and inserting the baffle limiting steel bar;
step S4: the lower bolt hole is expanded to form a square operation hole for installing the pouring rubber baffle, so that the pouring rubber baffle is conveniently installed on the inner side of the baffle limiting steel bar, the pouring rubber baffle is blocked with the inner wall of the hollow slab bridge main body, and the square operation hole is blocked to only leave a grouting hole channel;
step S5: drilling holes upwards near the high-strength bolts from the bottom plate, and installing vertical steel bars;
step S6: injecting micro-expansion fine stone concrete slurry from bottom to top; forming a concrete supporting block when the micro-expansion fine aggregate concrete reaches the age;
step S7: and installing an anchoring device, pre-tightening the high-strength bolt, and tensioning the external prestressed tendon and then locking by using an anchorage device.
Step S8: and forming a polymer mortar protective layer by using polymer mortar to carry out sealing protection on the outer prestressed tendon.
Compared with the prior art, the invention has the beneficial effects that:
1. the high-strength bolt is arranged in a beam body of a main body of the hollow slab bridge, the anchoring device is connected with the high-strength bolt, the high-strength bolt provides huge pretightening force for the anchoring device, and after the external prestressed tendons are tensioned, the prestress is transmitted to the concrete supporting block on the tension side through huge static friction force between the anchoring device and the main body of the hollow slab bridge and extrusion force between a screw rod of the high-strength bolt and the concrete supporting block.
2. Because the huge pretightning force of high strength bolt can not directly be exerted on hollow slab bridge main part, set up vertical reinforcing bar and pour the concrete supporting shoe in high strength bolt department, prevent that the hollow slab bridge main part of inside excavation from being squashed.
3. The bolt holes and the square operation holes are grooved, so that the construction difficulty is small.
4. The external prestressed tendons are anchored at the lower side of the hollow slab bridge main body, the clearance at the lower part of the slab beam is large, and the inspection and the maintenance are convenient.
5. In order to prevent the pre-tightening force of the high-strength bolt from reducing, a pre-tightening spring is arranged between the anchoring devices, and the pre-tightening spring is used for transmitting the elastic force to the screw rod to keep the screw rod in a high stress state of the pre-tightening spring, so that the reliable force transmission of the anchoring devices is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 along line A-A;
FIG. 3 is a schematic view of the structure of FIG. 1 along the line B-B;
FIG. 4 is a schematic view of the structure of FIG. 1 along the direction C-C;
FIG. 5 is a schematic view of the structure of FIG. 1 taken along line D-D;
FIG. 6 is a schematic view of a portion of the structure of FIG. 1;
fig. 7 is a schematic view of the structure in the direction of E-E in fig. 6.
In the drawings, the components represented by the respective reference numerals are listed below:
the method comprises the following steps of 1-cavity, 2-hollow slab bridge main body, 3-high-strength bolt, 31-pre-tightening spring, 4-concrete supporting block, 5-vertical steel bar, 6-external pre-stressing tendon, 61-anchor device, 7-steering block, 8-anchoring device, 9-pouring rubber baffle, 10-baffle limiting steel bar, 11-bolt hole, 12-square operation hole, 13-bridge deck pavement layer and 14-polymer mortar protective layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides an external prestressing force reinforced structure of hollow slab girder bridge, is equipped with hollow slab bridge main part 2 of cavity 1 including the middle part, wear to establish high strength bolt 3 from top to bottom in hollow slab bridge main part 2's both sides, high strength bolt 3's specific quantity is decided according to hollow slab bridge main part 2 sizes, is the equidistance and arranges the distribution.
The top of hollow slab bridge main part 2 has bridge deck pavement layer 13, 3 tops of high strength bolt embed in bridge deck pavement layer 13, earlier slot on bridge deck pavement layer 13 when high strength bolt 3 installs, seal the fluting position again after the fastening is fixed after the installation to hide the end part of high strength bolt 3, prevent directly to expose in the bridge deck.
Part of the high-strength bolts 3 penetrate through the positions of the cavities 1, the penetrating positions of the high-strength bolts 3, corresponding to the two sides, of the two ends of each cavity 1 are poured and filled with concrete supporting blocks 4, the concrete supporting blocks 4 are formed by pouring cast-in-place micro-expansion concrete, the concrete supporting blocks 4 are provided with a plurality of vertical reinforcing steel bars 5 distributed at intervals, the vertical reinforcing steel bars 5 vertically penetrate from the bottoms of the hollow slab bridge main bodies 2 and serve as reinforcing steel frameworks of the concrete supporting blocks 4, and the strength of the concrete supporting blocks 4 is guaranteed.
The concrete supporting block 2 is characterized in that pouring rubber baffles 9 are arranged on two sides of the concrete supporting block 4, baffle limiting steel bars 10 which are vertically arranged in the hollow slab bridge main body 2 in a penetrating mode are arranged on the outer sides of the pouring rubber baffles 9, the pouring rubber baffles 9 mainly play a role of forming templates when the concrete supporting block 4 is poured, and the baffle limiting steel bars 10 are abutted to the outer sides of the pouring rubber baffles 9 and play a supporting role in supporting the pouring rubber baffles 9.
The upper side wall and the lower side wall of the concrete supporting block 4 are respectively provided with a bolt hole 11 and a square operation hole 12, the high-strength bolt 3 penetrates through the bolt hole 11 and the square operation hole 12, the bolt hole 11 is formed before the concrete supporting block 4 is poured and is used for locking the high-strength bolt 3, and the square operation hole 12 is formed by expanding and cutting the lower half part of the bolt hole 11 and is used for placing a pouring rubber baffle plate 9 into the cavity 1 and keeping a pouring opening of concrete slurry after partial plugging in the later period.
The bottom of hollow slab axle main part 2 vertically is provided with external prestressing tendons 6, the middle part of external prestressing tendons 6 with establish between the bottom surface of hollow slab axle main part 2 and turn to piece 7, prop up the support downwards in 6 middle parts of external prestressing tendons from hollow slab axle main part 2 bottom surface through turning to piece 7.
The bottom of the hollow slab bridge main body 2 is provided with a polymer mortar protective layer 14, and the external prestressed tendons 6 are embedded in the polymer mortar protective layer 14 to play a role in isolating the external prestressed tendons 6.
The both ends of external prestressing tendons 6 are all fixed through 8 pretensions of anchor device, anchor device 8 quilt simultaneously 3 locks of high strength bolt are fixed, and anchor device 8 is L shaped plate element structure, a lateral wall of L shaped plate element structure with 2 bottom surfaces of hollow slab bridge main part are laminated and are worn to establish the lock solid by high strength bolt 3, another lateral wall with 2 bottom surfaces of hollow slab bridge main part are perpendicular and utilize ground tackle 61 anchor after being worn to establish by external prestressing tendons 6, and anchor device and high strength bolted connection, high strength bolt provide huge pretightning force for anchor device, and after the external prestressing tendons of stretch-draw, the prestressing force passes through the huge static friction power of anchor device and hollow slab bridge main part and the extrusion force transmission of the screw rod of high strength bolt and concrete supporting shoe for the concrete supporting shoe of tensile side, forms stable stretch-draw anchor structure.
Working principle embodiment:
step S1: determining the corresponding position of the anchoring device 8 on the hollow slab bridge main body 2, and vertically chiseling the bridge deck pavement layer 13 of the hollow slab bridge main body 2 to the surface of the slab structure layer of the hollow slab bridge main body 2;
step S2: vertically cutting bolt holes 11 which are adaptive to the diameters of the screws of the high-strength bolts 3 downwards, installing upper backing plates and the high-strength bolts, and repairing a bridge deck pavement layer 13;
step S3: drilling holes at corresponding positions from bottom to top, wherein the diameter of each hole is matched with the diameter of the baffle limiting steel bar 10, and inserting the baffle limiting steel bar 10;
step S4: the lower bolt hole 11 is expanded to form a square operation hole 12 for installing the pouring rubber baffle 9, so that the pouring rubber baffle 9 is conveniently installed on the inner side of the baffle limiting steel bar 10, the pouring rubber baffle 9 and the inner wall of the hollow slab bridge main body 2 are plugged, and the square operation hole 12 is sealed to leave only a grouting pore channel;
step S5: drilling holes upwards near the high-strength bolts 3 from the bottom plate, and installing vertical steel bars 5;
step S6: injecting micro-expansion fine stone concrete slurry from bottom to top; forming a concrete supporting block 4 when the micro-expansion fine aggregate concrete reaches the age;
step S7: and installing an anchoring device 8, pre-tightening the high-strength bolt 3, tensioning the external prestressed tendon 6 and then locking by using an anchorage device 61.
Step S8: the polymer mortar protective layer 14 is formed by using polymer mortar to carry out sealing protection on the outer prestressed tendons 6.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Terms used in any technical scheme disclosed in the invention for indicating position relation or shape include approximate, similar or close state or shape except for other meanings.
It will be apparent to those skilled in the art that the above-described embodiments of the present invention are merely preferred embodiments of the present invention, and it is not necessary to create any inventive effort to design various external prestressed reinforcement structures and methods for prestressed concrete slabs of road bridges based on the teachings of the present invention, and all equivalent changes, modifications, substitutions and alterations made without departing from the spirit and scope of the present invention are all within the scope of the present invention.
Claims (8)
1. The utility model provides an external prestressing force reinforced structure of hollow slab beam bridge which characterized in that: the hollow slab bridge comprises a hollow slab bridge main body (2) with a cavity (1) in the middle, high-strength bolts (3) are arranged on the two sides of the hollow slab bridge main body (2) in a penetrating mode from top to bottom in a penetrating mode, the two ends of the cavity (1) correspond to the two sides, a concrete supporting block (4) is filled at the penetrating position of the high-strength bolts (3) in a pouring mode, a plurality of vertical reinforcing steel bars (5) distributed at intervals are arranged on the concrete supporting block (4), external prestressed tendons (6) are longitudinally arranged at the bottom of the hollow slab bridge main body (2), a steering block (7) is arranged between the middle of the external prestressed tendons (6) and the bottom surface of the hollow slab bridge main body (2) in a cushioning mode, the two ends of the external prestressed tendons (6) are fixed through anchoring devices (8) in a pre-tightening mode, and the anchoring devices (8) are locked and fixed by the high-strength bolts (3) at the same time.
2. The external prestressed reinforcement structure of hollow slab girder bridge of claim 1, wherein: pouring rubber baffles (9) are arranged on two sides of the concrete supporting block (4), and baffle limiting steel bars (10) which penetrate through the hollow slab bridge main body (2) from top to bottom are arranged on the outer sides of the pouring rubber baffles (9).
3. The external prestressed reinforcement structure of hollow slab girder bridge of claim 1, wherein: the concrete supporting block is characterized in that the upper side wall and the lower side wall of the concrete supporting block (4) are respectively provided with a bolt hole (11) and a square operating hole (12), and the high-strength bolt (3) penetrates through the bolt hole (11) and the square operating hole (12).
4. The external prestressed reinforcement structure of hollow slab girder bridge of claim 1, wherein: the anchoring device (8) is of an L-shaped plate element structure, one side wall of the L-shaped plate element structure is attached to the bottom surface of the hollow slab bridge main body (2) and is fixedly fastened by the high-strength bolts (3) in a penetrating mode, and the other side wall of the L-shaped plate element structure is perpendicular to the bottom surface of the hollow slab bridge main body (2) and is anchored by an anchorage device (61) after being penetrated by the external prestressed tendons (6).
5. The external prestressed reinforcement structure of hollow slab girder bridge of claim 1, wherein: the top of hollow slab bridge main part (2) has bridge deck pavement layer (13), high strength bolt (3) top embedded in bridge deck pavement layer (13).
6. The external prestressed reinforcement structure of hollow slab girder bridge of claim 1, wherein: the bottom of the hollow slab bridge main body (2) is provided with a polymer mortar protective layer (14), and the external prestressed tendons (6) are embedded in the polymer mortar protective layer (14).
7. The external prestressed reinforcement structure of hollow slab girder bridge of claim 1, wherein: and a pre-tightening spring (31) penetrates through a screw rod of the high-strength bolt (3), and the pre-tightening spring (31) is arranged at the bottom of the hollow slab bridge main body (2) in a cushioning manner.
8. The construction method of the external prestressed reinforcement structure of hollow slab girder bridge according to claim 1, characterized by comprising the following construction steps:
step S1: determining the corresponding position of the anchoring device (8) on the hollow slab bridge main body (2), and vertically chiseling the bridge deck pavement layer (13) of the hollow slab bridge main body (2) to the surface of the slab structure layer of the hollow slab bridge main body (2);
step S2: vertically cutting bolt holes (11) which are adaptive to the screw diameters of the high-strength bolts (3) downwards, installing upper backing plates and high-strength bolts, and repairing a bridge deck pavement layer (13);
step S3: drilling holes at corresponding positions from bottom to top, wherein the hole diameter is matched with the diameter of the baffle limiting steel bar (10), and inserting the baffle limiting steel bar (10);
step S4: the lower bolt hole (11) is expanded to form a square operation hole (12) for installing the pouring rubber baffle (9), the pouring rubber baffle (9) is conveniently installed on the inner side of the baffle limiting steel bar (10), the inner walls of the pouring rubber baffle (9) and the hollow slab bridge main body (2) are plugged, and the square operation hole (12) is sealed to leave only a grouting hole channel;
step S5: drilling holes upwards from the bottom plate near the high-strength bolts (3), and installing vertical steel bars (5);
step S6: injecting micro-expansion fine stone concrete slurry from bottom to top; forming a concrete supporting block (4) when the micro-expansion fine aggregate concrete reaches the age;
step S7: and installing an anchoring device (8), pre-tightening the high-strength bolt (3), and locking by using an anchorage device (61) after tensioning the external prestressed tendon (6).
Step S8: and forming a polymer mortar protective layer (14) by using polymer mortar to carry out sealing protection on the outer prestressed tendon (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623318.1A CN114197335B (en) | 2021-12-28 | 2021-12-28 | Construction method of external prestress reinforcing structure of hollow slab beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623318.1A CN114197335B (en) | 2021-12-28 | 2021-12-28 | Construction method of external prestress reinforcing structure of hollow slab beam bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114197335A true CN114197335A (en) | 2022-03-18 |
| CN114197335B CN114197335B (en) | 2024-05-03 |
Family
ID=80656931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111623318.1A Active CN114197335B (en) | 2021-12-28 | 2021-12-28 | Construction method of external prestress reinforcing structure of hollow slab beam bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114197335B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926331A (en) * | 2012-10-30 | 2013-02-13 | 商丘市豫东公路勘察设计有限公司 | Concrete hollow slab bridge strengthened by transverse integral clamping connection |
| CN103061271A (en) * | 2012-12-25 | 2013-04-24 | 中铁大桥勘测设计院集团有限公司 | Single plate force-bearing reinforcing method of hollow slab bridge |
| CN103774565A (en) * | 2013-12-31 | 2014-05-07 | 郑州大学 | Hollow slab grider bridge longitudinal prestressing reinforcement method |
| CN104328747A (en) * | 2013-07-23 | 2015-02-04 | 金辉 | Reinforcement method for single beam bearing of bridge and construction method thereof |
| KR20160099150A (en) * | 2015-02-11 | 2016-08-22 | (주)성환이앤씨 | Bridge construction method using anchorage device for tendon axis displacement control |
| CN109989359A (en) * | 2019-03-08 | 2019-07-09 | 苏交科集团股份有限公司 | A kind of hollow slab girder reinforcement means and structure |
| CN110055907A (en) * | 2019-05-08 | 2019-07-26 | 中交第二航务工程局有限公司 | A kind of concrete freely-supported hollow slab girder proposes load ruggedized construction |
| CN209277021U (en) * | 2018-12-27 | 2019-08-20 | 河南丰力路桥科技有限公司 | Lateral ties reinforcement structure at a kind of Hollow Slab Beam Bridge hinge seam |
-
2021
- 2021-12-28 CN CN202111623318.1A patent/CN114197335B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926331A (en) * | 2012-10-30 | 2013-02-13 | 商丘市豫东公路勘察设计有限公司 | Concrete hollow slab bridge strengthened by transverse integral clamping connection |
| CN103061271A (en) * | 2012-12-25 | 2013-04-24 | 中铁大桥勘测设计院集团有限公司 | Single plate force-bearing reinforcing method of hollow slab bridge |
| CN104328747A (en) * | 2013-07-23 | 2015-02-04 | 金辉 | Reinforcement method for single beam bearing of bridge and construction method thereof |
| CN103774565A (en) * | 2013-12-31 | 2014-05-07 | 郑州大学 | Hollow slab grider bridge longitudinal prestressing reinforcement method |
| KR20160099150A (en) * | 2015-02-11 | 2016-08-22 | (주)성환이앤씨 | Bridge construction method using anchorage device for tendon axis displacement control |
| CN209277021U (en) * | 2018-12-27 | 2019-08-20 | 河南丰力路桥科技有限公司 | Lateral ties reinforcement structure at a kind of Hollow Slab Beam Bridge hinge seam |
| CN109989359A (en) * | 2019-03-08 | 2019-07-09 | 苏交科集团股份有限公司 | A kind of hollow slab girder reinforcement means and structure |
| CN110055907A (en) * | 2019-05-08 | 2019-07-26 | 中交第二航务工程局有限公司 | A kind of concrete freely-supported hollow slab girder proposes load ruggedized construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114197335B (en) | 2024-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109183607B (en) | Prefabricated spliced UHPC pipe-concrete ultrahigh pier and construction method | |
| CN109184737B (en) | Tunnel prestress constraint filling lining support system capable of yielding and absorbing energy and process | |
| CN105862538B (en) | The oblique bond-retarded prestressed concrete pavement structure of assembled | |
| CN109610314B (en) | Prefabricated bridge deck wet joint structure and assembling method | |
| CN111877182B (en) | Novel construction method for upper structure of multi-chamber continuous UHPC box girder bridge | |
| CN112853933B (en) | Segment prefabricated assembled concrete-filled steel tube pier with restorable function | |
| CN103046478B (en) | Strengthening and pulling device of hinge gap of compositional plate girder bridge | |
| CN111705650B (en) | UHPC beam slab cast-in-place joint structure with embedded reinforced steel component and construction method thereof | |
| CN205711596U (en) | Assembled oblique bond-retarded prestressed concrete pavement structure | |
| CN111962533A (en) | Energy dissipation type pile anchor structure in strong seismic region and construction method thereof | |
| CN111733692A (en) | Segment pre-pressing assembly type concrete pier structure and construction method thereof | |
| CN108951399A (en) | A kind of Single-box multi-chamber box beam bridge and its construction method | |
| CN103290786A (en) | System and method for rapidly reinforcing railway bridge by external prestressing | |
| CN110847041A (en) | Temporary anchoring structure and anchoring method for segmental prefabricated assembled concrete box girder | |
| CN110578287B (en) | Assembled earthing corrugated steel plate-prestressed concrete combined arch bridge and construction method thereof | |
| CN111364374A (en) | Shear-resistant reinforcing method for small-section hollow beam | |
| CN108978492B (en) | Simply supported variable continuous bridge hogging moment steel bundle tensioning connector and bridge structure | |
| CN209114299U (en) | A kind of Single-box multi-chamber box beam bridge | |
| CN114197335A (en) | External prestress reinforcing structure of hollow slab beam bridge and construction method | |
| CN112252169B (en) | Hollow box-rock anchor combined light ground anchor bridge abutment and construction process thereof | |
| CN209760027U (en) | hollow core slab structure | |
| CN211849498U (en) | Flexible net surface layer and rigid beam composite soil nailing wall supporting system | |
| CN110284520B (en) | Dry-wet hybrid-connection large-span closed frame plate-column assembly system | |
| KR101352560B1 (en) | Strength arch passage and its construction method | |
| CN219731796U (en) | Well divide area secondary to pour built-in concrete guardrail structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |