CN110593142A - Bridge repairing method - Google Patents
Bridge repairing method Download PDFInfo
- Publication number
- CN110593142A CN110593142A CN201910895891.4A CN201910895891A CN110593142A CN 110593142 A CN110593142 A CN 110593142A CN 201910895891 A CN201910895891 A CN 201910895891A CN 110593142 A CN110593142 A CN 110593142A
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- Prior art keywords
- bridge
- grouting
- plate group
- pipe
- push rod
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 239000011440 grout Substances 0.000 claims abstract description 26
- 238000007569 slipcasting Methods 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 11
- 238000005498 polishing Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 7
- 230000008439 repair process Effects 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000009415 formwork Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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 relates to a bridge repairing method, which comprises the following specific steps: firstly, grinding; secondly, mounting a grouting pipe; thirdly, installing a pouring template, erecting a support system below the bridge, installing a supporting plate group, plugging the edge of the supporting plate group and the bridge through a sealing plate group, enclosing a pouring area among the bridge, the supporting plate group and the sealing plate group, and enabling a slurry inlet end of a grouting pipe to penetrate through one sealing plate group to be exposed; a vent pipe is arranged on one sealing plate group; fourthly, grouting: injecting concrete grout into the pouring area through the grouting pipe, plugging the vent pipe after the grout flows out of the vent pipe, continuing to perform pressure grouting into the pouring area, and finally sealing the grout inlet end of the grouting pipe, wherein the pressure value is between 0.5 and 0.8 MPa; and fifthly, removing the mold. The invention has the advantages that a brand-new concrete layer is formed on the bottom end surface of the bridge, and the bridge foundation is comprehensively repaired and reinforced, so that the bridge is not easy to be damaged again after being repaired.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a bridge repairing method.
Background
When local damage appears in the bridge road surface, not only make the vehicle jolt, but also can aggravate the vibration to the bridge, lead to the bridge to appear the crack, in addition, the local damage on bridge road surface still can lead to silt to flow into, adds the erosion of high temperature weather and freezing weather, and long and of a specified duration can seriously influence the life of bridge.
When the bottom end face of the bridge has cracks, the existing repairing mode usually adopts the mode of erecting a scaffold under the bridge, and repairing personnel climb the scaffold to inject repairing materials into the cracks of the bridge. Although the method can repair the cracks of the bridge, the repaired part is cracked again soon after repair. Because the repair of the bridge by adopting the repair mode is local repair, the repair material at the damaged part is easily stripped from the bridge, and the repair material at the repaired position drops and cracks are generated again soon after the repair material is used, so that the traditional repair process not only causes poor repair effect and waste of repair cost, but also easily causes secondary damage to the bridge.
Disclosure of Invention
The invention aims to provide a bridge repairing method which is characterized in that a brand-new concrete layer is formed on the bottom end surface of a bridge to comprehensively repair and reinforce a bridge foundation, so that the bridge is not easy to damage again after being repaired.
The above object of the present invention is achieved by the following technical solutions:
a bridge repairing method comprises the following specific steps:
step one, grinding: comprehensively polishing the end face of the bottom end of the bridge to expose fresh concrete on the surface of the bridge;
step two, mounting a grouting pipe: the method comprises the following steps that a plurality of grouting pipes are arranged on the end face of the bottom end of a bridge side by side along the length direction of the bridge, the grouting pipes are hung on the end face of the bottom end of the bridge through a hanging rod, and the length direction of the grouting pipes is arranged along the width direction of the bridge;
erecting a support system below the bridge, installing a supporting plate group at the top end of the support system, arranging the supporting plate group opposite to the end surface of the bottom end of the bridge, plugging the edge of the supporting plate group and the bridge through a sealing plate group, sealing and detachably connecting the top end of the sealing plate group with the bridge, sealing and detachably connecting the bottom end of the sealing plate group with the supporting plate group, enclosing a pouring area among the bridge, the supporting plate group and the sealing plate group, and exposing the grout inlet end of a grouting pipe through one of the sealing plate groups; a breather pipe is arranged on one sealing plate group, one end of the breather pipe is communicated with the pouring area, the other end of the breather pipe is communicated with the outside, and the height of the end face of the bottom end of the bridge, at which the breather pipe is communicated with the outside, is higher than that of the end face of the bottom end of the bridge;
fourthly, grouting: injecting concrete grout into the pouring area through the grouting pipe until the grout flows out through the vent pipe, plugging the vent pipe after the grout flows out of the vent pipe, continuing performing pressure grouting into the pouring area, and finally sealing the grout inlet end of the grouting pipe, wherein the pressure value is 0.5-0.8 MPa;
fifthly, removing the mold: and after the concrete is completely condensed, removing the pouring template.
By adopting the technical scheme, one layer of concrete can be comprehensively poured on the bottom end surface of the bridge, so that cracks of the bridge are repaired, the concrete which is newly poured is filled on the bottom end face of the bridge, concrete grout can flow into the cracks generated in the bridge when the concrete is poured, and the newly poured bridge bottom surface is combined, so that the repaired part is not easy to crack again.
The invention is further configured to: and after polishing, mounting a plurality of anchor rods on the end surface of the bottom end of the bridge.
Through adopting above-mentioned technical scheme, through the stock can be better with the concrete layer of newly pouring with old bridge connection together, make newly poured concrete be difficult for and break away from between the bridge.
The invention is further configured to: the stock includes the body of rod, the vertical downward setting of the body of rod, be provided with a plurality of branches that set up to the bottom terminal surface direction slope of bridge on the body of rod.
By adopting the technical scheme, the anchor rod and the newly poured concrete are connected more stably.
The invention is further configured to: and adopting a sectional grouting mode in the pouring area.
By adopting the technical scheme, the grout injected into the pouring area can be more uniformly filled in the pouring area.
The invention is further configured to: in the process of installing and pouring the template, a plurality of partition plates are arranged between the supporting plate group and the bridge along the width direction of the bridge at intervals, a plurality of grouting sections of the grouting area are divided into regions through the partition plates, the number of the vent pipes is matched with the number of the grouting sections, the vent pipes are communicated with the grouting sections in a one-to-one mode and the grouting sections are communicated with the inside of the vent pipes, grouting holes communicated with the grouting sections are formed in the pipe walls of the grouting pipes respectively, a plugging piece for controlling the grouting holes to be opened or closed is arranged inside the grouting pipes, the control end of the plugging piece penetrates through the supporting plate group to be exposed, and a control piece for driving the plugging piece is arranged on the lower surface.
Through adopting above-mentioned technical scheme, make and pour the regional a plurality of slip casting sections that form to can carry out sectional grouting to the inside in the region of pouring.
The invention is further configured to: the front and the back of the partition board are respectively provided with a fixed rod.
Through adopting above-mentioned technical scheme, make that the baffle can be better with the concrete connection of pouring together.
The invention is further configured to: the plugging piece comprises a plugging plate matched with the grouting hole in the axial direction, a push rod is arranged on one side of the plugging plate, which is opposite to the grouting hole, the push rod is parallel to the axis of the grouting hole, the push rod penetrates through the pipe wall below the grouting pipe to be exposed, and one exposed end of the push rod penetrates through the supporting plate group to be exposed.
Through adopting above-mentioned technical scheme, only need control push rod rebound, can make the closure plate seal the injected hole.
The invention is further configured to: the control piece adopts electric telescopic handle, electric telescopic handle is located the below of push rod, electric telescopic handle passes through the fixing base and is fixed together with layer board group, electric telescopic handle's piston rod is coaxial relative with the push rod, link together through colluding the ring and the couple that collude that link together between electric telescopic handle's piston rod and the push rod.
Through adopting above-mentioned technical scheme, be convenient for control push rod makes the push rod remove.
The invention is further configured to: after the slip casting pipe is installed, the bottom end surface of the bridge is washed by water spraying, and surface dust is removed.
Through adopting above-mentioned technical scheme, clear away the loam on bridge bottom surface to ensure that newly-poured concrete can be better combine together with the bridge.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the novel concrete can be formed on the end face of the bottom end of the bridge, when the concrete is poured, the newly poured concrete can enter a crack generated by the bridge, so that the bridge is repaired, and meanwhile, the newly poured concrete completely covers the bottom end of the bridge, so that the crack is not easy to occur at the original crack when the novel concrete is used;
2. grouting the casting area in a segmented manner, so that the uniformity of concrete slurry in the casting area can be ensured;
3. through after installation slip casting pipe, the bottom surface to the bridge sprays water and washes, clears away surperficial dust to ensure that the concrete of newly pouring can be better combine together with the bridge.
Drawings
FIG. 1 is a block flow diagram of a bridge repair method;
FIG. 2 is a schematic view of the installation structure of the grouting pipe on the end face of the bottom end of the bridge;
FIG. 3 is a schematic view of the construction of a grout pipe;
FIG. 4 is a schematic view of the construction of the pouring module during installation;
FIG. 5 is a schematic view of the cast formwork after installation;
fig. 6 is a schematic view of the structure above the pallet group.
In the figure, 1, a bridge; 11. an anchor rod; 111. a rod body; 112. branching; 2. a bridge opening side wall; 3. a grouting pipe; 31. grouting holes; 4. a blocking member; 41. a blocking plate; 42. a push rod; 5. a pallet group; 6. a plate sealing group; 7. a breather pipe; 8. a partition plate; 81. fixing the rod; 9. an electric telescopic rod; 10. a fixed seat.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and fig. 2, a bridge repairing method disclosed by the invention specifically comprises the following steps:
step one, grinding: and integrally polishing the bottom surface of the bridge 1 by using a polishing device to expose a fresh concrete surface on the bottom surface of the bridge 1.
After finishing polishing, a plurality of anchor rods 11 are arranged on the bottom end face of the bridge 1, each anchor rod 11 comprises a rod body 111 connected with the bottom end face of the bridge 1, and the rod bodies 111 are vertically arranged downwards. The rod body 111 is provided with a plurality of branches 112 which are obliquely arranged towards the end face direction of the bottom end of the bridge 1, and the branches 112 and the rod body 111 are welded and fixed.
Step two, mounting a grouting pipe: a plurality of slip casting pipes 3 are installed on the bottom end face of the bridge 1 along the length direction of the bridge 1, and the length direction of the slip casting pipes 3 is arranged along the width direction of the bridge 1. One end of the grouting pipe in the length direction is located outside the side wall surface of the bridge 1 and is a grouting end of the grouting pipe, and the other end of the grouting pipe in the length direction is located right below the bridge 1 and is a grout outlet end. And a space is reserved between the grout outlet end of the grouting pipe 3 and the side wall surface of the bridge 1.
Referring to fig. 2, the grout pipe 3 is fixed on the end surface of the bridge 1 by a hanger rod with a space between the grout pipe 3 and the end surface of the bottom end of the bridge 1. One end of the suspender is fixed with the end surface of the bottom end of the bridge 1, and the other end is fixed with the grouting pipe 3. Referring to fig. 3, a plurality of grouting holes 31 are formed in one upward side of the wall of the grouting pipe 3 along the length direction of the grouting pipe 3, plugging pieces 4 are arranged inside the grouting pipe 3 and are opposite to the grouting holes 31 one by one, each plugging piece 4 comprises a plugging plate 41 matched with the grouting holes 31 in shape and size, a push rod 42 is arranged on one side of each plugging plate 41, which faces away from the grouting holes 31, and the axis of each push rod 42 is parallel to the axis of each grouting hole 31. The end of the push rod 42 facing away from the closure plate 41 is exposed through the lower wall of the grouting pipe 3. The push rod 42 is connected with the wall of the grouting pipe 3 in a sliding way.
When the push rod 42 is pushed to move upward, the push rod 42 pushes the blocking plate 41, and the blocking plate 41 closes the grouting hole 31 of the grouting pipe 3. When the push rod 42 moves downward, the push rod 42 drives the blocking plate 41 to separate the blocking plate 41 from the injection hole 31, thereby opening the injection hole 31.
After the grouting pipes 3 are installed, the bottom end surface of the bridge 1 is washed by water spraying, and dust adhered to the surface due to construction is removed.
Thirdly, installing a pouring template: referring to fig. 4, a support system is erected below the bridge 1, and the support system adopts a scaffold. And a supporting plate group 5 is arranged at the top end of the supporting system, and the supporting plate group 5 is positioned below the grouting pipe 3. One group of opposite end faces of the supporting plate group 5 are respectively aligned with the side walls 2 of the bridge opening, and the other group of opposite end faces of the supporting plate group 5 face the two side wall faces of the bridge 1 respectively and are respectively aligned with the two side wall faces of the bridge 1. And filling sealant at the joint between the side wall 2 of the bridge opening and the supporting plate group 5. Referring to fig. 5, a sealing plate group 6 is disposed between the two ends of the bridge 1 in the width direction and the support plate group 5, the top end of the sealing plate group 6 is attached to the side wall surface of the bridge 1, sealed with the bridge 1 and connected together by expansion bolts, and the bottom end of the sealing plate group 6 is sealed with the support plate group 5 and fixed together by bolts.
In this embodiment, one set of opposite ends of the pallet group 5 abuts against the bridge opening side wall 2, so that the opening between the pallet group 5 and the bridge is closed by the bridge opening side wall 2, and the opening between the other set of opposite ends and the bridge 1 is respectively closed by the sealing plate group 6. Openings between the four ends of the supporting plate group 5 and the bridge can be sealed through the sealing plate group 6.
A closed pouring space is defined by the support plate group 5, the sealing plate group 6 and the bridge 1, and the pouring space encloses the grout outlet end of the grouting pipe 3 and the part of the grouting pipe 3 with the grouting hole 31. The slurry inlet end of the grouting pipe 3 is exposed through the sealing plate group 6.
Referring to fig. 6, when the supporting plate group 5 is installed, a plurality of partition plates 8 are installed between the supporting plate group 5 and the bridge 1 along the width direction of the bridge 1, the top ends of the partition plates 8 are abutted to the top end of the bridge 1, and the bottom ends of the partition plates 8 are fixed to the supporting plate group 5 through bolts. And a plurality of grouting sections arranged along the width direction of the bridge girder 1 are formed between the pallet group 5 and the bridge girder 1 through the partition plates 8. The number of the baffle plates 8 is one less than the number of the grouting holes on the grouting pipe 3. Each spacer 8 is located between adjacent grouting holes 31 on the grouting pipe 3.
The front and back of the partition plate 8 are respectively fixed with a plurality of fixing rods 81, one end of each fixing rod 81 is welded and fixed with the partition plate, and the other end is a free end.
Referring to fig. 6, one end of one sealing plate group 6 close to the bridge is provided with vent pipes 7, the number of which is matched with the number of formed grouting sections, and the vent pipes 7 correspond to the grouting sections one by one. One end of the vent pipe 7 extends into the grouting section, and the other end of the vent pipe penetrates through the sealing plate group 6 so as to be positioned outside the pouring area. The height of the end of the breather pipe 7 outside the pouring space is higher than the bottom end surface of the bridge 1. The air pipe 7 penetrates through the sealing plate group 6 close to the slurry inlet end of the grouting pipe 3.
The supporting plate group 5 is formed by vertically and horizontally arranging and butting a plurality of steel templates, and the steel templates face the bottom end face of the bridge to form a surface parallel to the bottom end face of the bridge. When the steel formworks are butted, sealing strips are placed between the adjacent steel formworks, and therefore the sealing performance between the steel formworks is guaranteed through the sealing strips.
When the steel formwork is installed, a through hole for the push rod 42 to pass through is reserved at a position of the steel formwork opposite to the push rod 42 on the grouting pipe 3, and the push rod 42 passes through the through hole. And a sealing ring is arranged between the hole wall of the through hole and the push rod 42, so that the leakage is not easy to occur from the through hole during grouting.
The bottom end of the push rod 42 is provided with the electric telescopic rod 9, the piston rod of the electric telescopic rod 9 is opposite to the push rod 42, and the piston rod of the electric telescopic rod 9 is coaxial with the push rod. The push rod 42 is detachably connected with the piston rod of the electric telescopic rod 9. The push rod is fixed with the one end that electric telescopic handle 9 is relative and colludes the ring, is provided with on electric telescopic handle 9's the piston rod and colludes ring assorted couple, colludes the ring through the couple to link electric telescopic handle's telescopic link together with the push rod.
The electric telescopic rod 9 is fixed with the steel moulding plate through a fixing seat 10. When the electric telescopic rod 9 is in an extension state, the electric telescopic rod 9 pushes the push rod 42 to enable the blocking plate 41 to seal the grouting hole 31, and when the electric telescopic rod 9 is in a recovery state, the electric telescopic rod 9 pulls the push rod 42 to enable the blocking plate 41 to be separated from the grouting hole 31, so that the grouting hole 31 is opened.
Fourthly, grouting: and (3) communicating the grouting machine with the grouting pipe 3 by adopting a pressure grouting mode, and injecting concrete slurry into the pouring area through the grouting pipe 3 until the concrete slurry flows out through the vent pipe. After concrete grout flows out of the vent pipe 7, the vent pipe 7 is plugged, pressure grouting is continuously carried out in the pouring area, the pressure value is between 0.5MPa and 0.8MPa, pressure maintaining is carried out, and finally the grout inlet end of the grouting pipe 3 is sealed.
When grouting, the electric telescopic rod 9 is controlled to open the grouting holes in sequence according to the injection amount of the grout, and the opening direction is from the grout outlet end of the grouting pipe 3 to the grout inlet end direction of the grouting pipe 3, so that segmented grouting is performed on a plurality of grouting sections of a pouring area. And the slurry uniformity in the pouring area is ensured through sectional grouting.
Fifthly, removing the mold: and after the concrete is completely condensed, removing the pouring template.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, 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 (9)
1. A bridge repairing method is characterized in that: the method comprises the following specific steps:
step one, grinding: comprehensively polishing the end face of the bottom end of the bridge (1) to expose fresh concrete on the surface of the bridge (1);
secondly, installing a grouting pipe (3): a plurality of grouting pipes (3) are arranged on the end face of the bottom end of the bridge (1) side by side along the length direction of the bridge (1), the grouting pipes (3) are hung on the end face of the bottom end of the bridge (1) through hanging rods, and the length direction of the grouting pipes (3) is arranged along the width direction of the bridge (1);
erecting a support system below the bridge (1), installing a supporting plate group (5) at the top end of the support system, arranging the supporting plate group (5) opposite to the end surface of the bottom end of the bridge (1), plugging the edge of the supporting plate group (5) and the bridge (1) through a sealing plate group (6), sealing and detachably connecting the top end of the sealing plate group (6) with the bridge (1), sealing and detachably connecting the bottom end of the sealing plate group (6) with the supporting plate group (5), enclosing a pouring area among the bridge (1), the supporting plate group (5) and the sealing plate group (6), and exposing a grout inlet end of a grouting pipe (3) through one sealing plate group (6); a vent pipe (7) is arranged on one sealing plate group (6), one end of the vent pipe (7) is communicated with the pouring area, the other end of the vent pipe is communicated with the outside, and the height of the end face, communicated with the outside, of the vent pipe (7) is higher than that of the end face of the bottom end of the bridge (1);
fourthly, grouting: injecting concrete grout into the pouring area through the grouting pipe (3) until the grout flows out through the vent pipe (7), plugging the vent pipe (7) after the grout flows out of the vent pipe (7), continuing to perform pressure grouting into the pouring area, wherein the pressure value is between 0.5 and 0.8MPa, and finally sealing the grout inlet end of the grouting pipe (3);
fifthly, removing the mold: and after the concrete is completely condensed, removing the pouring template.
2. The bridge repairing method according to claim 1, wherein: after polishing, a plurality of anchor rods (11) are arranged on the end surface of the bottom end of the bridge (1).
3. The bridge repairing method according to claim 2, wherein: stock (11) are including the body of rod (111), the vertical downward setting of the body of rod (111), be provided with a plurality of branches (112) that set up to the bottom terminal surface direction slope of bridge (1) on the body of rod (111).
4. The bridge repairing method according to claim 1, wherein: and adopting a sectional grouting mode in the pouring area.
5. A method for repairing a bridge (1) according to claim 4, characterized in that: in the process of template is pour in the installation, set up a plurality of baffles (8) along the width direction interval of bridge (1) between layer board group (5) and bridge (1), thereby through baffle (8) will pour a plurality of slip casting sections of regional subregion, the quantity of breather pipe (7) and the quantity phase-match of slip casting section, breather pipe (7) and slip casting section one-to-one and inside are linked together, slip casting hole (31) that communicate with the slip casting section on the pipe wall of slip casting pipe (3) respectively, the inside that is located slip casting pipe (3) is provided with control slip casting hole (31) and opens or closed shutoff piece (4), and the control end of shutoff piece (4) passes layer board group (5) and exposes, and the lower surface that is located layer board group (5) is provided with the control of drive shutoff piece (4).
6. The bridge repairing method according to claim 5, wherein: and the front surface and the back surface of the partition plate (8) are respectively provided with a fixing rod (81).
7. The bridge repairing method according to claim 5, wherein: the plugging piece (4) comprises a plugging plate (41) matched with the grouting hole (31), a push rod (42) is arranged on one side, back to the grouting hole (31), of the plugging plate (41), the push rod (42) is parallel to the axis of the grouting hole (31), the push rod (42) penetrates through the pipe wall, located below the grouting pipe (3), to be exposed, and one end, exposed out of the push rod (42), of the plugging piece passes through the supporting plate group (5) to be exposed.
8. The bridge repairing method according to claim 7, wherein: the control piece adopts electric telescopic handle (9), electric telescopic handle (9) are located the below of push rod (42), electric telescopic handle (9) are fixed together through fixing base (10) and layer board group (5), the piston rod of electric telescopic handle (9) is coaxial relative with push rod (42), link together through colluding the ring that colludes that links together and couple between piston rod of electric telescopic handle (9) and push rod (42).
9. The bridge repairing method according to claim 1, wherein: after the grouting pipes (3) are installed, the bottom end surface of the bridge (1) is washed by water spraying, and surface dust is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895891.4A CN110593142A (en) | 2019-09-21 | 2019-09-21 | Bridge repairing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895891.4A CN110593142A (en) | 2019-09-21 | 2019-09-21 | Bridge repairing method |
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| Publication Number | Publication Date |
|---|---|
| CN110593142A true CN110593142A (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910895891.4A Pending CN110593142A (en) | 2019-09-21 | 2019-09-21 | Bridge repairing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914654A (en) * | 2021-11-15 | 2022-01-11 | 西南石油大学 | Grouting device for ecological restoration of concrete cracks |
| CN116045077A (en) * | 2023-02-16 | 2023-05-02 | 中交一公局集团有限公司 | Large-diameter direct-buried pipeline installation method |
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Application publication date: 20191220 |