CN111877190A - A reinforced structure that is used for hinge joint to become invalid to cause veneer atress disease bridge - Google Patents
A reinforced structure that is used for hinge joint to become invalid to cause veneer atress disease bridge Download PDFInfo
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- CN111877190A CN111877190A CN202010804389.0A CN202010804389A CN111877190A CN 111877190 A CN111877190 A CN 111877190A CN 202010804389 A CN202010804389 A CN 202010804389A CN 111877190 A CN111877190 A CN 111877190A
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- hinge joint
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The invention discloses a reinforcing structure for a single-plate stress damaged bridge caused by hinge joint failure, and belongs to the field of bridge reinforcement. The flange steel channel comprises flange steel channels and reinforced concrete. The flange channel steel is tightly attached to the bottom of the bridge plate, the reinforced concrete is located in the flange channel steel and comprises longitudinal steel bars, U-shaped steel bars and concrete, the longitudinal steel bars are longitudinally arranged along the grooves, and the two ends of the upper portion of each U-shaped steel bar are respectively implanted into the holes in the lower portion of the bridge plate on the two sides of the hinge joint. The U-shaped reinforcing steel bars comprise upper U-shaped reinforcing steel bars and lower U-shaped reinforcing steel bars. The upper U-shaped reinforcing steel bars and the lower U-shaped reinforcing steel bars comprise vertical reinforcing steel bars on two sides and transverse reinforcing steel bars at the bottom, and the transverse reinforcing steel bars at the bottom are connected with the bottom ends of the vertical reinforcing steel bars on two sides. The longitudinal steel bar is arranged in the lower U-shaped steel bar and is in cross connection with the bottom of the lower U-shaped steel bar. The invention can give full play to the shearing resistance of the transverse reinforcing steel bar and the bending resistance of the longitudinal reinforcing steel bar; the friction force of the up-and-down movement of the hinge joint of the bridge plate is increased, the influence of the failure of the hinge joint is made up, and the integral stress capacity of the bridge plate is improved.
Description
Technical Field
The invention relates to a bridge reinforcing technology, in particular to a reinforcing structure for a single-plate stress damaged bridge caused by hinge joint failure.
Background
Hinge joints among plate bridges fail to become common defects of the bridges, the defects are caused by a plurality of reasons, the conventional hinge joint action is not sufficiently known, and the management part, the quality inspection part, the design and construction department usually only pay attention to the quality of the beam plates and neglect the hinge joint quality, so that various defects of the hinge joints occur. The failure of the hinge joint directly causes the stress of the single plate of the bridge, so that the bridge deck is easily damaged, and the service life of the bridge deck is influenced.
Aiming at reinforcing stress damage of a single plate of a bridge caused by hinge joint failure, Chinese invention patent CN103174098B discloses a reinforcing method for treating stress of the single plate by section steel concrete, which comprises the following steps: pressing into U-shaped steel with flanges according to the length and the structure of the single-span bridge, wherein the steel flanges are provided with through holes; b. roughening the surface concrete of the bottom plate on two sides of the hinge joint of the hollow plate, and drilling holes on the bottom plate according to the hole positions of the flanges of the U-shaped steel flanges of the flanges; c, cleaning the drilled hole and implanting an anchoring screw into the through hole; d, anchoring and mounting flange U-shaped steel on the hollow slab; concrete is poured into the hinge joint of the hollow plate, L-shaped ribs are embedded in the bottom plates on two sides of the hinge joint respectively, the L-shaped ribs are connected into a U-shaped structure, the longitudinal steel bars are welded with the L-shaped ribs, and at least two longitudinal steel bars are arranged in the vertical direction along the L-shaped ribs. The method adopts the steel reinforced concrete reinforcement technology to reinforce the hollow slab from the two aspects of improving the integral stress and the single-beam bearing capacity, thereby not only improving the integrity and the transverse load distribution, but also improving the bearing capacity of the single beam.
In the reinforcing technology for the stress condition of the single plates of the bridge, the transverse connecting ribs of the L-shaped ribs of the U-shaped structures are used for positioning the longitudinal reinforcing steel bars and resisting the transverse shearing force of the single plates. The shearing resistance of the transverse connecting rib is stronger when the transverse connecting rib is closer to the bridge bottom plate, the longitudinal reinforcing rib at the bottom of the reinforced structure can improve the bending resistance of concrete in the longitudinal direction, and meanwhile, the bending resistance of the reinforced concrete is stronger when the thickness of the reinforced concrete is thicker, so that the bending resistance of the longitudinal reinforcing rib at the bottom of the reinforced structure is stronger when the longitudinal reinforcing rib is farther from the bridge bottom plate. The transverse connecting ribs and the longitudinal reinforcing steel bars in the reinforcing technology are difficult to simultaneously improve the transverse shearing resistance and the longitudinal bending resistance of the reinforcing structure.
Disclosure of Invention
Aiming at the prior art, the invention aims to provide a reinforcing structure for a single-plate stress damaged bridge caused by hinge joint failure, which can greatly improve the overall performance of the reinforcing structure.
In order to solve the technical problem, the reinforcing structure for the single-plate stress damaged bridge caused by hinge joint failure comprises a flange channel steel and reinforced concrete, wherein the reinforced concrete is positioned in the flange channel steel, the flange channel steel is longitudinally arranged along the position right below a hinge joint, and the upper end of the flange channel steel is fixed and tightly attached to the lower surface of a bridge plate. The reinforced concrete comprises longitudinal steel bars, U-shaped steel bars and concrete, and the longitudinal steel bars are longitudinally arranged along the hinge joints. The U-shaped reinforcing steel bar comprises an upper U-shaped reinforcing steel bar and a lower U-shaped reinforcing steel bar, the upper U-shaped reinforcing steel bar and the lower U-shaped reinforcing steel bar comprise two side vertical reinforcing steel bars and a bottom transverse reinforcing steel bar, and the bottom transverse reinforcing steel bar is connected with the bottom ends of the two side vertical reinforcing steel bars. The upper ends of the vertical steel bars on the two sides of the upper U-shaped steel bar are respectively planted in the holes on the lower surfaces of the bridge plates on the two sides of the hinge joint and are fixed in the holes, and the transverse steel bar of the upper U-shaped steel bar abuts against the lower surface of the bridge plate. The longitudinal steel bars are arranged in the lower U-shaped steel bars and are in cross connection with the bottom transverse steel bars.
The bottom of each of the two adjacent bridge plates with the hinge joint is provided with at least one longitudinal steel bar on the bridge plate, the longitudinal steel bars on the upper U-shaped steel bar are arranged in the upper U-shaped steel bar, and the vertical steel bars on the two sides of the upper U-shaped steel bar are alternately abutted against the longitudinal steel bars of the bridge plate in the upper U-shaped steel bar.
The diameter of the upper U-shaped reinforcing steel bar is larger than that of the lower U-shaped reinforcing steel bar.
The inner parts of the bent corners of the upper U-shaped steel bars are provided with inclined connecting bars, the inclined connecting bars connect the vertical steel bars on the two sides of the upper U-shaped steel bars with the horizontal steel bars at the bottom of the upper U-shaped steel bars, and the original longitudinal steel bars of the bridge plate are close to the joints of the inclined connecting bars and the vertical steel bars.
Compared with the prior art, the invention has the beneficial effects that: 1. the U-shaped reinforcing steel bars are divided into upper U-shaped reinforcing steel bars and lower U-shaped reinforcing steel bars, so that an original transverse reinforcing steel bar has transverse shear resistance and longitudinal reinforcing steel bar positioning functions, and the transverse reinforcing steel bars of the upper U-shaped reinforcing steel bars and the upper U-shaped reinforcing steel bars respectively play roles, and the shear resistance of the transverse reinforcing steel bars and the bending resistance of the longitudinal reinforcing steel bars can be fully exerted; 2. after the vertical reinforcing bar in both sides of upper portion U-shaped reinforcing bar received the pulling force of the horizontal reinforcing bar in bottom, the vertical reinforcing bar in both sides extrudees the original longitudinal reinforcement of bridge plate to the centre in the time of the centre extrusion concrete, after the longitudinal reinforcement received the extrusion force to the centre of hinge joint, its fore-and-aft concrete can be extruded to the longitudinal reinforcement, therefore, the concrete along the longitudinal both sides of hinge joint all received to middle extrusion force, further increase the frictional resistance of the up-and-down motion between the bridge plate of the hinge joint that became invalid, compensate the influence that the hinge joint became invalid, improve the whole atress ability of bridge plate like this.
Drawings
FIG. 1 is a schematic diagram of the transverse cross-sectional structure of the present invention.
Fig. 2 is a schematic structural view of a section a-a in fig. 1.
Detailed Description
The invention will now be further described in the following with reference to the accompanying drawings, in which reference is made to figures 1-2, in which embodiments of the invention are shown.
In order to solve the technical problem, the invention provides a reinforcing structure for a single-plate stress damaged bridge caused by hinge joint failure, which comprises a flange channel steel 1 and reinforced concrete 2. The flange channel steel 1 is provided with steel flanges 11 at two sides, an opening at the upper end and a groove, the opening faces upwards and is positioned under the hinge joint 3 and tightly attached to the lower surface of the bridge plate 4, reinforced concrete 2 is filled in the groove, the steel flange 11 is arranged at the top end of the side wall of the groove, and the steel flange 11 is fixed on the lower surface of the bridge plate 4. The reinforced concrete 2 comprises longitudinal steel bars 21, U-shaped steel bars and concrete, the concrete fills the gap between the bridge plate 4 and the flange channel steel 1, the longitudinal steel bars 21 are longitudinally arranged along the grooves, the two ends of the upper part of each U-shaped steel bar are respectively planted in the holes 41 in the lower part of the bridge plate 4 on the two sides of the hinge joint 3, and the U-shaped steel bars are fixed in the holes 41 through viscose glue. The vertical both ends of flange channel-section steel 1 set up shrouding 12, and recess upper portion is provided with inlet pipe 13, and inlet pipe 13 passes shrouding 12. The U-shaped reinforcing bars include an upper U-shaped reinforcing bar 22 and a lower U-shaped reinforcing bar 23. The upper U-shaped reinforcing steel bar 22 and the lower U-shaped reinforcing steel bar 23 both comprise two side vertical reinforcing steel bars 221 and 231 and bottom transverse reinforcing steel bars 222 and 232, and the bottom transverse reinforcing steel bars 222 and 232 are respectively connected with the bottom ends of the two side vertical reinforcing steel bars 221 and 231.
The horizontal reinforcing bar 222 in bottom of upper portion U-shaped reinforcing bar 22 receives behind the shear force, thereby downwarping and transverse tension, the horizontal reinforcing bar 222 in bottom is to the horizontal taut vertical reinforcing bar 221 in both sides in centre like this, the vertical reinforcing bar 221 in both sides extrudes the concrete on the bridge deck to the centre, thereby extrude the filler in the hinge joint, the power that the vertical reinforcing bar 221 bottom department in both sides extrudees the concrete is the biggest, the horizontal reinforcing bar 222 in bottom of upper portion U-shaped reinforcing bar 22 can be nearer from 4 bottoms of bridge deck, it receives the extrusion force of the vertical reinforcing bar 221 in both sides to increase the concrete on the bridge deck 4 like this, make the filler in the hinge joint receive the extrusion force increase, increase the frictional resistance of the up-and-down motion between the bridge deck 4 of hinge. Thereby reducing the influence of the single plate stress of the bridge plate 4 on the reinforcing member and increasing the transverse shearing resistance of the reinforcing structure. The transverse bars 222 of the upper U-shaped reinforcing bars 22 abut against the bottom of the bridge deck 4, so that the shear resistance of the transverse bars 222 of the upper U-shaped reinforcing bars 22 is optimized.
The longitudinal steel bars 21 are arranged in the lower U-shaped steel bars 23 and are in cross connection with the bottom transverse steel bars 232, the longitudinal steel bars 21 can enhance the longitudinal bending resistance of concrete, the longitudinal bending resistance of the reinforced concrete 2 is greatly related to the thickness of the reinforced concrete, and the bottom transverse steel bars 232 of the lower U-shaped steel bars 23 play a role in positioning the inner longitudinal steel bars 21, so that the thickness of the reinforced concrete 2 can be designed according to the design requirement of longitudinal bending resistance.
As a further optimization, at least one original longitudinal steel bar 42 of the bridge plate is arranged in the upper U-shaped steel bar 22 at the bottom of each of two bridge plates 4 adjacent to the hinge joint 3, the vertical steel bars 221 at two sides of the upper U-shaped steel bar 22 are close to the longitudinal steel bars 42 of the bridge plate 4 inside the upper U-shaped steel bar, after the vertical steel bars 221 at two sides of the upper U-shaped steel bar 22 are subjected to the pulling force of the transverse steel bar 222 at the bottom, the vertical reinforcing steel bars 221 at the two sides extrude the concrete towards the middle and simultaneously extrude the original longitudinal reinforcing steel bars 42 of the bridge plate 4 towards the middle, after the original longitudinal reinforcing steel bars 42 are extruded towards the middle of the hinge joint 3, the longitudinal reinforcing bars 42 will squeeze the longitudinal concrete towards the middle, greatly increasing the area of the squeezed concrete on the bridge deck, therefore, the concrete between the longitudinal reinforcements 42 of the bridge plate on the two longitudinal sides of the hinge joint 3 is extruded towards the middle, so that the extrusion force on the filler in the hinge joint is further increased, and the frictional resistance of the up-and-down movement between the bridge plates 4 of the failed hinge joint is further increased.
The inclined connecting ribs 223 are arranged inside the bent corners of the upper U-shaped steel bar 22, the inclined connecting ribs 223 connect the vertical steel bars 221 on the two sides of the upper U-shaped steel bar 22 with the transverse steel bars 222, the original longitudinal steel bars 42 of the bridge plate 4 are close to the joints of the inclined connecting ribs 223 and the vertical steel bars 221, and the tensile force of the transverse steel bars 222 can be transferred to the extrusion force of the vertical steel bars 221 on the longitudinal steel bars 42 through the inclined connecting ribs 223 as soon as possible.
Further, the lower U-shaped reinforcing bars 22 only play a role in positioning the longitudinal reinforcing bars 21, so that the diameter of the upper U-shaped reinforcing bars 22 and the diameter of the longitudinal reinforcing bars 21 inside the lower U-shaped reinforcing bars 23 are both larger than the diameter of the lower U-shaped reinforcing bars 23, and the purpose of saving materials is achieved.
The construction steps of the embodiment of the invention comprise the following steps:
s1, pressing into a flange channel steel 1 according to the length and the structure of a single-span bridge;
s2, chiseling surface concrete on the bottom plates on two sides of the hinge joint 3 of the bridge plate 4, and drilling holes on the bottom plates according to the hole positions of the steel flanges 11 of the flange channel steel 1;
s3, chiseling a small amount of concrete at the bottom of the bridge plate 4 near the hinge joint 3, finding the original longitudinal steel bars 42 at the bottoms of the bridge plates 4 at two sides near the hinge joint 3, drilling holes upwards in the bottom of the bridge plate 4 along the longitudinal steel bars 42, cleaning the drilled holes, injecting viscose glue into the drilled holes, and inserting the upper ends of the vertical steel bars 221 at two sides of the upper U-shaped steel bar 22 into the drilled holes until the transverse steel bars 222 of the upper U-shaped steel bar 22 abut against the bottom of the bridge plate 4;
s4, placing the longitudinal steel bars 21 in the reinforced concrete 2 on the transverse steel bars 232 of the lower U-shaped steel bars 23 and welding;
s5, cleaning drill holes corresponding to the hole positions of the steel flange 11, injecting viscose glue into the drill holes, and smearing the viscose glue on the upper surface of the steel flange 11 and the lower surface corresponding to the bridge plate 4;
s6, enabling the through hole in the flange channel steel 1 to correspond to the drilled hole, and enabling the anchoring bolt 14 to penetrate through the through hole and be fixedly implanted into the drilled hole;
s7, welding sealing plates 12 at two ends of the flange channel steel 1;
s8, injecting concrete into the flange channel steel 1 through the feed pipe 13;
and S9, after the concrete reaches the strength, putting the bridge into use.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (4)
1. A reinforcing structure for a bridge with a single plate stressed and damaged due to hinge joint failure comprises a flange channel steel and reinforced concrete, wherein the reinforced concrete is positioned in the flange channel steel, the flange channel steel is longitudinally arranged right below a hinge joint, the upper end of the flange channel steel is fixed and tightly attached to the lower surface of a bridge plate, the reinforced concrete comprises longitudinal steel bars, U-shaped steel bars and concrete, the longitudinal steel bars are longitudinally arranged along the hinge joint, the reinforcing structure is characterized in that the U-shaped steel bars comprise upper U-shaped steel bars and lower U-shaped steel bars, the upper U-shaped steel bars and the lower U-shaped steel bars respectively comprise vertical steel bars at two sides and transverse steel bars at the bottom, the transverse steel bars at the bottom are connected with the bottom ends of the vertical steel bars at two sides, the upper ends of the vertical steel bars at two sides of the upper U-shaped steel bars are respectively implanted in holes in the lower surface of the bridge plate at two sides of the hinge joint and are fixed, the longitudinal steel bars are arranged in the lower U-shaped steel bars and are in cross connection with the bottom transverse steel bars.
2. The reinforcing structure for a bridge damaged by stress on a single plate caused by hinge joint failure according to claim 1, wherein at least one longitudinal steel bar on each of the bottom of two adjacent bridge plates at the hinge joint is arranged inside the upper U-shaped steel bar, and the vertical steel bars on two sides of the upper U-shaped steel bar are crossly abutted against the longitudinal steel bars on the inner bridge plate.
3. The reinforcing structure for a single-plate stress damaged bridge caused by hinge joint failure according to claim 1, wherein the diameter of the upper U-shaped steel bar is larger than that of the lower U-shaped steel bar.
4. The reinforcing structure for a single-slab stressed bridge girder with defects caused by hinge joint failures as claimed in claim 1, wherein inclined connecting bars are arranged inside the corners of the upper U-shaped steel bars, the inclined connecting bars connect the vertical steel bars on the two sides of the upper U-shaped steel bars with the horizontal steel bars at the bottom of the upper U-shaped steel bars, and the original longitudinal steel bars of the bridge slab are close to the joints of the inclined connecting bars and the vertical steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010804389.0A CN111877190A (en) | 2020-08-12 | 2020-08-12 | A reinforced structure that is used for hinge joint to become invalid to cause veneer atress disease bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010804389.0A CN111877190A (en) | 2020-08-12 | 2020-08-12 | A reinforced structure that is used for hinge joint to become invalid to cause veneer atress disease bridge |
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| CN111877190A true CN111877190A (en) | 2020-11-03 |
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| CN202010804389.0A Pending CN111877190A (en) | 2020-08-12 | 2020-08-12 | A reinforced structure that is used for hinge joint to become invalid to cause veneer atress disease bridge |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003027419A (en) * | 2001-07-17 | 2003-01-29 | Eko Japan Kk | Method for repairing buried bar in concrete structure, and buried bar arrangement structure |
| JP2006214118A (en) * | 2005-02-02 | 2006-08-17 | Topy Ind Ltd | Device and method for reinforcing steel floor slab of existing bridge |
| CN103306216A (en) * | 2013-05-27 | 2013-09-18 | 华侨大学 | Novel reinforcing device for reinforced concrete bridge and bridge deck, and construction method thereof |
| CN203393641U (en) * | 2013-07-23 | 2014-01-15 | 金辉 | Anchoring profile steel concrete beam |
| CN105019365A (en) * | 2014-04-28 | 2015-11-04 | 郑州大学 | Structure for rapidly restoring hinge joint of hollow slab bridge and construction method thereof |
| CN105064222A (en) * | 2015-08-02 | 2015-11-18 | 金辉 | H-shaped steel combination reinforced structure for beam bridge, and construction method of H-shaped steel combination reinforced structure |
| CN207073076U (en) * | 2017-07-24 | 2018-03-06 | 东北林业大学 | One kind carries out cored slab Shear Strengthening structure using gap space is cut with scissors |
| CN109295863A (en) * | 2017-07-24 | 2019-02-01 | 辽宁省交通规划设计院有限责任公司 | A kind of increase carries out cored slab Shear Strengthening structure and method with circumferential muscle |
| CN110747760A (en) * | 2019-11-28 | 2020-02-04 | 台州学院 | Reinforcing structure and reinforcing method for single plate stress of bridge |
-
2020
- 2020-08-12 CN CN202010804389.0A patent/CN111877190A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003027419A (en) * | 2001-07-17 | 2003-01-29 | Eko Japan Kk | Method for repairing buried bar in concrete structure, and buried bar arrangement structure |
| JP2006214118A (en) * | 2005-02-02 | 2006-08-17 | Topy Ind Ltd | Device and method for reinforcing steel floor slab of existing bridge |
| CN103306216A (en) * | 2013-05-27 | 2013-09-18 | 华侨大学 | Novel reinforcing device for reinforced concrete bridge and bridge deck, and construction method thereof |
| CN203393641U (en) * | 2013-07-23 | 2014-01-15 | 金辉 | Anchoring profile steel concrete beam |
| CN105019365A (en) * | 2014-04-28 | 2015-11-04 | 郑州大学 | Structure for rapidly restoring hinge joint of hollow slab bridge and construction method thereof |
| CN105064222A (en) * | 2015-08-02 | 2015-11-18 | 金辉 | H-shaped steel combination reinforced structure for beam bridge, and construction method of H-shaped steel combination reinforced structure |
| CN207073076U (en) * | 2017-07-24 | 2018-03-06 | 东北林业大学 | One kind carries out cored slab Shear Strengthening structure using gap space is cut with scissors |
| CN109295863A (en) * | 2017-07-24 | 2019-02-01 | 辽宁省交通规划设计院有限责任公司 | A kind of increase carries out cored slab Shear Strengthening structure and method with circumferential muscle |
| CN110747760A (en) * | 2019-11-28 | 2020-02-04 | 台州学院 | Reinforcing structure and reinforcing method for single plate stress of bridge |
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Application publication date: 20201103 |