CN113832871B - Arch bridge reinforcing method based on corrugated steel plate - Google Patents
Arch bridge reinforcing method based on corrugated steel plate Download PDFInfo
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- CN113832871B CN113832871B CN202110869900.XA CN202110869900A CN113832871B CN 113832871 B CN113832871 B CN 113832871B CN 202110869900 A CN202110869900 A CN 202110869900A CN 113832871 B CN113832871 B CN 113832871B
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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
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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
- E01D4/00—Arch-type bridges
Abstract
The invention discloses an arch bridge reinforcing method based on a folded steel plate, which comprises the following steps: A. removing the original protective wall of the bridge opening to expose the soil mass on the wall of the bridge opening; B. an arched metal surface layer made of folded steel plates is arranged in the bridge opening, and a filling gap is formed between the metal surface layer and the soil body on the wall of the bridge opening; C. and pouring concrete in the filling gaps to form a concrete inner layer which connects the metal surface layer and the soil body, wherein the metal surface layer and the concrete inner layer form a new bridge opening protecting wall, and the metal surface layer forms a pouring template and a template support in the process of pouring the concrete. The invention aims to provide a corrugated steel plate-based arch bridge reinforcing method for a road closing time period and a small earthwork excavation amount during construction, and solves the problems that the existing arch bridge reinforcing construction process needs to close the upper road and the lower road, the closing time is long, and the earthwork excavation amount is large.
Description
Technical Field
The application relates to the technical field of underground building construction, in particular to an arch bridge reinforcing method based on corrugated steel plates.
Background
In the process of road construction, when roads are subjected to solid crossing, arch bridges are built on high roads for low roads (mostly single arch bridges) to cross and pass, and as the service time goes on, the damage strength of the arch bridges is reduced, so that the arch bridges need to be reinforced and repaired again. The existing method for repairing the reinforcement comprises the steps of widening a bridge opening, supporting a mould through a full framing serving as a mould support, injecting slurry into the mould to form a concrete reinforcing layer, and removing the full framing and the mould after the concrete reinforcing layer is cured. The reinforcement repairing method has the following defects: the full framing support is used as a mold support to support the mold, and a road below the full framing support needs to be closed for closing construction, so that traffic below the full framing support is influenced; the mould needs to be dismantled, which is time-consuming; the strengthening layer needs to be thick to meet the strength requirement, the wall thickness of the bridge opening becomes thinner in the construction process when the soil layer thickness of the excavated bridge opening is large due to thickening of the strengthening layer, the thinning not only increases the earthwork excavation amount, but also enables the strength of the arch bridge to be reduced more during repair, the arch bridge is easy to collapse when a high-level road is driven, and the high-level road needs to be closed during construction due to safety.
Disclosure of Invention
The invention aims to provide a corrugated steel plate-based arch bridge reinforcing method for closing a road time period and reducing the earthwork excavation amount during construction, and solves the problems that the existing arch bridge reinforcing construction process needs to close the upper road and the lower road, the closing time is long, and the earthwork excavation amount is large.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for reinforcing an arch bridge based on a corrugated steel plate is characterized by comprising the following steps: A. removing the original wall of the bridge opening to expose the soil on the wall of the bridge opening; B. installing an arched metal surface layer made of folded steel plates in the bridge opening, and forming a filling gap between the metal surface layer and the soil body on the wall of the bridge opening; C. and pouring concrete in the filling gaps to form a concrete inner layer which connects the metal surface layer and the soil body together, wherein the metal surface layer and the concrete inner layer form a new bridge opening retaining wall, and the metal surface layer forms a pouring template and a template support in the process of pouring the concrete. The construction time is short (the road needs to be closed when the earth is excavated and the metal surface layer is installed), and the excavation amount of the earth is not needed to be closed for the high-level road. The full support does not need to be built for supporting, and the template does not need to be removed. The thickness of the corrugated steel plate is more than 8 mm.
Preferably, a plurality of grouting pipes distributed along the circumferential direction of the metal surface layer are fixed on the surface of the metal surface layer on one side of the filling gap, the grouting pipes extend along the depth direction of the bridge opening, and a plurality of grout outlet holes are formed in the circumferential surface of each grouting pipe; and C, pouring concrete through the grouting pipe during pouring of the concrete in the step C. The entire filling gap can be reliably filled with the slurry. The strength of the new wall protection of the bridge opening can be improved.
Preferably, the grouting pipe is provided with a plurality of supporting rods distributed along the extension direction of the grouting pipe, one end of each supporting rod is hinged with the grouting pipe through a hinge shaft, the hinge shaft is perpendicular to the grouting pipe, the grouting pipe is provided with an avoidance through hole for the inlet and outlet of one end of each supporting rod connected with the grouting pipe, and one end of each supporting rod connected with the grouting pipe is provided with a blocking rod positioned in the grouting pipe; when the support rod rotates to be folded on the grouting pipe by taking the hinge shaft as a shaft, the blocking rod blocks in the grouting pipe, and the support rod is positioned in the filling gap; before concrete is poured, the driving rod is inserted into the grouting pipe to drive the blocking rod, so that the supporting rod rotates by taking the hinge shaft as an axis and is separated from the grouting pipe, and the supporting rod is unfolded into soil body inserted into the wall part of the bridge opening when the inner end of the driving rod exceeds the blocking rod. The strength and the connection reliability of the concrete inner layer can be improved. The increase in strength does not result in an increase in the amount of earth excavated.
Preferably, the outer surface of the support rod is provided with a plurality of puncture heads, and all the puncture heads are positioned in the soil body of the wall of the bridge opening when the support rod is unfolded. The reliability of the connection between the new protecting wall of the bridge opening and the soil body can be improved.
Preferably, the support rod is a blind pipe structure with an opening at one end connected with the grouting pipe, the puncture heads are arranged in four rows, the puncture heads in the same row are distributed along the extension direction of the support rod, the four rows of puncture heads are distributed along the circumferential direction of the support rod, the distribution direction of the two rows of puncture heads is perpendicular to the distribution direction of the other two rows of puncture heads, the two rows of puncture heads are distributed along the radial direction of the hinge shaft, the other two rows of puncture heads are distributed along the axial direction of the hinge shaft, the puncture heads distributed along the radial direction of the hinge shaft are fixedly connected with the support rod, the support rod is provided with two rows of puncture head connecting through holes distributed along the axial direction of the hinge shaft, the two rows of puncture heads distributed along the axial direction of the hinge shaft correspond to each other and can be telescopically penetrated in the puncture head connecting through holes, the drive rod is a blind pipe structure with one end of the blocking rod closed and the other end opened when the grouting pipe is inserted, the drive rod is provided with a plurality of air outlet holes capable of aligning with the openings on all the support rods in one-to-one correspondence, and when the air outlet holes are aligned with the openings; when the supporting rod is folded on the grouting pipe, the stabs in the two rows of stabs axially distributed along the hinge shaft are contracted in the supporting rod; after the driving rod drives the supporting rod to rotate by taking the hinge shaft as a shaft and is separated from the grouting pipe, air is blown into the driving rod firstly to enable the air pressure in the supporting rod to rise to push the two rows of stabs axially distributed along the hinge shaft out of the supporting rod, then the driving rod is pulled out, and finally grouting is carried out through the grouting pipe to fill gaps and grooves formed in soil bodies when the supporting rod swings. The structural strength and the reliability of the grouting filling gap can be improved.
Preferably, two flexible sealing films are arranged in the support rod, the periphery of each flexible sealing film is connected with the support rod in a sealing mode to form two isolation cavities disconnected with the inner space of the support rod, and the inner ends of the two rows of puncture heads distributed along the axial direction of the hinge shaft are located in the two isolation cavities in a one-to-one correspondence mode. Not only can conveniently prevent air leakage from the puncture head connecting through hole, but also can save labor when the puncture head extends out.
Preferably, the inner end of the puncture head axially distributed along the hinge shaft is provided with a barb for preventing the puncture head from falling out of the support rod. The connection reliability is good.
Preferably, two ends of the driving rod are rotatably supported on the metal surface layer or the grouting pipe, and an elastic sealing ring protruding out of the driving rod and extending along the circumferential direction of the air outlet hole is arranged on the outer circumferential surface of the part of the driving rod provided with the air outlet hole; the in-process of injected tube is inserted to the actuating lever, elastic sealing ring staggers with the one end that branch and injected tube are connected, all separate apart between the inner peripheral surface of whole outer peripheral face and injected tube of actuating lever, separate apart between the one end that whole outer peripheral face and branch of actuating lever and injected tube are connected, the actuating lever inserts injected tube to with all branch with injected tube after separately, rotate the actuating lever and make the venthole align with the opening, when the venthole aligns with the opening, pass through between the one end that branch and injected tube are connected and the actuating lever elastic sealing ring sealing connection is in the same place. The driving rod can be inserted into the driving support rod to drive the support rod to unfold, labor is saved, and the opening and the air outlet can be reliably sealed and butted together to prevent air leakage.
Preferably, the driving rod is eccentrically arranged in the grouting pipe. The outer diameter of the drive rod can be maximized.
Preferably, the strut is located outside the grout tube when the strut is closed onto the grout tube. The convenience in the manufacturing process can be improved, and the pipe diameter of the grouting pipe is smaller.
Preferably, two ends of the metal surface layer in the depth direction of the bridge opening are provided with outer flanges, and the outer flanges positioned at the two ends of the metal surface layer are shielded at the two ends of the filling gap so that the filling gap forms a closed cavity. Can conveniently prevent the slurry from overflowing during grouting.
Preferably, in the step A, excavating two sides of the bridge opening hardened pavement along the width direction of the bridge opening to form two trenches positioned at two sides of the bridge opening hardened pavement in the width direction, wherein the distance between the two trenches of the bridge opening hardened pavement is the design width of the bridge opening; and step B, inserting two end heads of the metal surface layer along the width direction of the bridge opening into the two trenches in a one-to-one correspondence manner, and fixing the end heads together with the hardened pavement of the bridge opening through expansion bolts. The metal surface layer can be reliably kept in a set state, and the phenomenon that the metal surface layer expands outwards to prevent the size of the action bridge opening from being not in accordance with the requirement when the metal surface layer contracts inwards and expands with heat and contracts with cold during grouting is avoided.
Preferably, the grouting pipe, the support rod and the stabs are all of metal structures. The strength of the concrete layer and the strength of the repaired arch bridge can be improved.
The invention has the following beneficial effects: the corrugated steel plate is adopted to manufacture the metal surface layer to serve as the side wall surface of the bridge opening, and the corrugated steel plate can have higher strength under the condition of thinner wall thickness, so that the thickness of excavated earth is lower when the bridge opening is widened under the condition that the requirement on the reinforcing strength of the arch bridge is not changed, the earth amount and the intensity reduction amount of the arch bridge caused in the construction process are reduced, and the upper road can be prevented from being closed; the metal surface layer can be used as a mold and a mold support, so that a full space support does not need to be built for supporting when a concrete layer is formed by grouting, the closing time of a low road is short, the mold does not need to be removed, and the field construction time can be shortened; the support rod and the grouting pipe can be used as a framework of concrete, so that the strength of the concrete layer is high; the supporting rods can be folded, and the grouting pipes are unfolded in a pressing mode after being installed in place, so that the excavated earth volume is not required to be increased due to the design of the supporting rods, grooves can be generated when the supporting rods are unfolded, and the grooves are filled to form concrete bumps after concrete is injected, so that the connection strength between the concrete layer and the earth body is good, and the effect of improving the strength of the arch bridge is achieved; the stabs are arranged, so that the connection strength of the concrete layer and the strength of the arch bridge can be further improved; part of the stabs extend out after the support rod is unfolded, so that the stress of the support rod during unfolding can be reduced, and the connection effect between the connecting stabs and the soil body can be ensured; if the stabs are in the unfolding state, the stabs extending along the axial direction of the hinge shaft can also scratch a narrow ditch in soil, and the narrow ditch is not easy to fill during grouting, so that the ground grabbing effect of the stabs is influenced.
Drawings
FIG. 1 is a schematic view of a bridge opening as viewed in the direction of extension during construction;
FIG. 2 is an enlarged partial schematic view at A of FIG. 1;
fig. 3 is a partially enlarged schematic view at B of fig. 2;
FIG. 4 is a schematic view of FIG. 1 taken at C-C and with the struts in a deployed state;
FIG. 5 is an enlarged partial schematic view at D of FIG. 4;
FIG. 6 is a schematic view of the section C-C of FIG. 1 with the struts collapsed onto the grout tube;
fig. 7 is a partially enlarged schematic view at E of fig. 6.
In the figure: the bridge opening comprises a bridge opening 1, a soil body 2 on the wall of the bridge opening, a metal surface layer 3, a filling gap 4, a grouting pipe 5, a grout outlet 6, a support rod 7, a hinge shaft 8, an avoiding through hole 9, one end 10 of the support rod connected with the grouting pipe, a stopping rod 11, a stabbing head 12, stabbing heads 13 distributed along the radial direction of the hinge shaft, a stabbing head connecting through hole 14, stabbing heads 15 distributed along the axial direction of the hinge shaft, a barb 16, an outer flange 17, a blind hole 18, a shaft head 19, an air outlet hole 20, an elastic sealing ring 21, a groove 22, a flexible sealing film 23, an isolation cavity 24, a hardened road surface 25 of the bridge opening, a trench 26, an expansion bolt 27, a high road 28, a low road 29, a driving rod 30 and an opening 31.
Detailed Description
The invention is further illustrated with reference to the accompanying drawings and specific examples.
Referring to fig. 1 to 7, a method for reinforcing an arch bridge based on a corrugated steel plate includes the following steps: A. removing the original bridge protecting wall of the bridge opening 1 to expose the soil body 2 on the wall of the bridge opening; B. an arched metal surface layer 3 made of a folded steel plate is arranged in the bridge opening, and the thickness of the metal surface layer is more than 8 millimeters. A filling gap 4 is formed between the metal surface layer and the soil body on the wall of the bridge opening; C. and pouring concrete in the filling gaps to form a concrete inner layer which connects the metal surface layer and the soil body, wherein the metal surface layer and the concrete inner layer form a new bridge opening protecting wall, and the metal surface layer forms a pouring template and a template support in the process of pouring the concrete. A plurality of grouting pipes 5 distributed along the circumferential direction of the metal surface layer are fixed on the surface of the metal surface layer on one side of the filling gap, the grouting pipes extend along the depth direction of the bridge opening, and a plurality of grout outlet holes 6 are arranged on the circumferential surface of each grouting pipe; and C, when concrete is poured in the step C, the concrete is poured in through a grouting pipe and then flows out from the grout outlet hole to fill the filling gap. The grouting pipe is provided with a plurality of supporting rods 7 distributed along the extension direction of the grouting pipe, one end of each supporting rod is hinged with the grouting pipe through a hinge shaft 8, the hinge shaft is perpendicular to the grouting pipe, the grouting pipe is provided with an avoidance through hole 9 for the inlet and outlet of one end of each supporting rod connected with the grouting pipe, and one end 10 of each supporting rod connected with the grouting pipe is provided with a blocking rod 11 positioned in the grouting pipe; when the support rod rotates to be folded on the grouting pipe by taking the hinge shaft as a shaft, the blocking rod blocks in the grouting pipe, the support rod is positioned outside the grouting pipe, and the support rod is positioned in the filling gap. Before concrete is poured, the driving rod 30 is inserted into the grouting pipe to drive the blocking rod, so that the supporting rod rotates by taking the hinge shaft as an axis and is separated from the grouting pipe, and the supporting rod is unfolded into soil body inserted into the wall part of the bridge opening when the inner end of the driving rod exceeds the blocking rod. The outer surface of the support rod is provided with a plurality of stabs 12, when the support rod is unfolded, all the stabs are located in soil of the wall of the bridge opening, and in the embodiment, the stabs are all located in the soil of the wall of the bridge opening. The support rod is of a blind pipe structure, one end of the support rod, which is connected with the grouting pipe, is provided with an opening 31, the pricking heads are arranged in four rows, the pricking heads in the same row of pricking heads are distributed along the extending direction of the support rod, the four rows of pricking heads are distributed along the circumferential direction of the support rod, the distribution direction of the two rows of pricking heads is perpendicular to the distribution direction of the other two rows of pricking heads, the two rows of pricking heads are distributed along the radial direction of the hinge shaft, the other two rows of pricking heads are distributed along the axial direction of the hinge shaft, the pricking heads 13 distributed along the radial direction of the hinge shaft are fixedly connected with the support rod, the support rod is provided with two rows of pricking head connecting through holes 14 distributed along the axial direction of the hinge shaft, the two rows of pricking heads distributed along the axial direction of the hinge shaft are correspondingly and can be telescopically penetrated in the pricking head connecting through holes, and the inner ends of the pricking heads 15 distributed along the axial direction of the hinge shaft are provided with barbs 16 for preventing the pricking heads from being separated from the support rod. The two ends of the metal surface layer along the depth direction of the bridge opening are provided with outer flanges 17, and the outer flanges at the two ends of the metal surface layer shield the two ends of the filling gap so that the filling gap forms a closed cavity. One end of the driving arresting rod is provided with a shaft head 19 which is rotatably connected to the blind hole 18 of one outer flange, and the other end of the driving rod is rotatably connected to the other outer flange. The driving rod is eccentrically arranged in the grouting pipe. The driving rod is a blind pipe structure which drives one end of the blocking rod to be closed and the other end of the blocking rod to be open when the grouting pipe is inserted, and a plurality of air outlet holes 20 which can be aligned with the openings on all the supporting rods in a one-to-one correspondence mode are formed in the driving rod. An elastic sealing ring 21 which protrudes out of the driving rod and extends along the circumferential direction of the air outlet hole is arranged on the outer circumferential surface of the part of the driving rod, which is provided with the air outlet hole; the in-process that the actuating lever inserted the slip casting pipe, elastic sealing ring staggers with the one end of branch with slip casting union coupling, all separate apart between the whole outer peripheral face of actuating lever and the inner peripheral surface of slip casting pipe, separate apart between the whole outer peripheral face of actuating lever and the one end of branch with the slip casting union coupling, the actuating lever inserts the slip casting pipe to with all branch with the slip casting pipe after separately (being that the spindle nose supports when in the blind hole), rotate the actuating lever and make the venthole align with the opening, when the venthole aligns with the opening, pass through between the one end of branch with the slip casting union coupling and the actuating lever elastic sealing ring sealing connection is in the same place. When the support rod is folded on the grouting pipe (namely in an initial state), the puncture heads in the two rows of puncture heads axially distributed along the hinge shaft are contracted in the support rod; after the driving rod drives the supporting rod to rotate by taking the hinge shaft as a shaft and separate from the grouting pipe, air is blown into the driving rod firstly to enable the air pressure in the supporting rod to rise to push the two rows of stabs axially distributed along the hinge shaft out of the supporting rod, then the driving rod is pulled out, and finally grouting is carried out through the grouting pipe to fill gaps and grooves 22 formed in soil bodies when the supporting rod swings. Two flexible sealing films 23 are arranged in the supporting rod, the peripheries of the flexible sealing films are connected with the supporting rod in a sealing mode to form two isolation cavities 24 disconnected with the internal space of the supporting rod, and the inner ends of the two rows of the stabs distributed along the axial direction of the hinge shaft are located in the two isolation cavities in a one-to-one correspondence mode. The grouting pipe, the support rod and the stabs are all of metal structures. In the step A, excavating two sides of the bridge opening hardened pavement along the width direction of the bridge opening to form two ditches 26 positioned at two sides of the bridge opening hardened pavement 25 in the width direction, wherein the distance between the two ditches of the bridge opening hardened pavement is the design width of the bridge opening; in the step B, two ends of the metal surface layer along the width direction of the bridge opening are correspondingly inserted into the two trenches one by one, and the ends are fixed with the hardened pavement of the bridge opening through expansion bolts 27. In the construction process of the invention, the high-level road 28 does not need to be closed, the low-level road 29 only needs to be totally closed in the step A and the step B, and if the width of the bridge opening is wider, the low-level road does not need to be totally closed in the whole construction process, but only needs to be semi-closed in the step A and the step B.
Claims (6)
1. An arch bridge reinforcing method based on a corrugated steel plate is characterized by comprising the following steps: A. removing the original wall of the bridge opening to expose the soil on the wall of the bridge opening; B. an arched metal surface layer made of a folded steel plate is arranged in the bridge opening, and a filling gap is formed between the metal surface layer and a soil body on the wall of the bridge opening; C. pouring concrete in the filling gap to form a concrete inner layer which connects the metal surface layer and the soil body together, wherein the metal surface layer and the concrete inner layer form a new bridge opening protecting wall, the metal surface layer forms a pouring template and a template support in the concrete pouring process, a plurality of grouting pipes distributed along the circumferential direction of the metal surface layer are fixed on the surface of the metal surface layer on one side of the filling gap, the grouting pipes extend along the depth direction of the bridge opening, and a plurality of grout outlet holes are formed in the circumferential surface of each grouting pipe; c, when concrete is poured in the step C, the concrete is poured through the grouting pipe, a plurality of supporting rods distributed along the extension direction of the grouting pipe are arranged on the grouting pipe, one end of each supporting rod is hinged with the grouting pipe through a hinge shaft, the hinge shaft is perpendicular to the grouting pipe, the grouting pipe is provided with an avoidance through hole for enabling one end of each supporting rod connected with the grouting pipe to enter and exit, and one end of each supporting rod connected with the grouting pipe is provided with a blocking rod located in the grouting pipe; when the support rod rotates to be folded on the grouting pipe by taking the hinge shaft as a shaft, the blocking rod blocks in the grouting pipe, and the support rod is positioned in the filling gap; before concrete is poured, a driving rod is inserted into a grouting pipe to drive a blocking rod, so that a support rod rotates by taking a hinge shaft as an axis and is separated from the grouting pipe, the support rod is unfolded into a soil body inserted into the wall of a bridge opening when the inner end of the driving rod exceeds the blocking rod, a plurality of puncture heads are arranged on the outer surface of the support rod, all the puncture heads are positioned in the soil body of the wall of the bridge opening when the support rod is unfolded, the support rod is of a blind pipe structure, the opening is formed in one end, connected with the grouting pipe, of which only, four rows are arranged, the puncture heads in the same row are distributed along the extending direction of the support rod, the four rows of puncture heads are distributed along the circumferential direction of the support rod, the distribution direction of the two rows of puncture heads is vertical to that of the other two rows of puncture heads are distributed along the radial direction of the hinge shaft, the other two rows of puncture heads are distributed along the axial direction of the hinge shaft, the puncture heads distributed along the radial direction of the hinge shaft are fixedly connected with the support rod, the two rows of puncture head connecting through holes are arranged along the axial direction of the hinge shaft, the blind pipe connecting through holes are aligned with the openings, the air outlet pipe, the blind pipe is sealed with the opening, and the air outlet pipe is sealed with the blind pipe, when the blind pipe, the blind pipe is aligned with the air outlet pipe, and the blind pipe, the blind pipe is aligned with the air outlet hole, and the blind pipe; when the supporting rod is folded on the grouting pipe, the stabs in the two rows of stabs axially distributed along the hinge shaft are contracted in the supporting rod; after the driving rod drives the supporting rod to rotate by taking the hinge shaft as a shaft and is separated from the grouting pipe, air is blown into the driving rod firstly to enable the air pressure in the supporting rod to rise to push the two rows of stabs axially distributed along the hinge shaft out of the supporting rod, then the driving rod is pulled out, and finally grouting is carried out through the grouting pipe to fill gaps and grooves formed in soil bodies when the supporting rod swings.
2. The arch bridge reinforcing method based on the corrugated steel plate as claimed in claim 1, wherein two flexible sealing films are provided in the supporting rod, the peripheries of the flexible sealing films are hermetically connected with the supporting rod to form two isolated cavities disconnected with the internal space of the supporting rod, and the inner ends of two rows of stabs axially distributed along the hinge shaft are located in the two isolated cavities in a one-to-one correspondence manner.
3. A method of reinforcing an arch bridge based on corrugated steel sheets as claimed in claim 1 or 2, wherein the inner ends of the barbed heads axially distributed along the hinge shaft are provided with barbs for preventing the barbed heads from coming off the struts.
4. The arch bridge reinforcing method based on the corrugated steel plate as claimed in claim 1 or 2, wherein two ends of the driving rod are rotatably supported on the metal surface layer or the grouting pipe, and an elastic sealing ring protruding from the driving rod and extending along the circumferential direction of the air outlet hole is arranged on the outer circumferential surface of the part of the driving rod provided with the air outlet hole; the in-process that the actuating lever inserted the slip casting pipe, elastic sealing ring staggers with the one end of branch with slip casting union coupling, all separate apart between the whole outer peripheral face of actuating lever and the inner peripheral surface of slip casting pipe, separate apart between the whole outer peripheral face of actuating lever and the one end of branch with the slip casting union coupling, the actuating lever inserts the slip casting pipe to with all branch with the slip casting pipe after separately, rotate the actuating lever and make the venthole align with the opening, when the venthole aligns with the opening, pass through between the one end of branch with the slip casting union coupling and the actuating lever elastic sealing ring sealing connection is in the same place.
5. The arch bridge reinforcing method based on the corrugated steel plate as claimed in claim 1 or 2, wherein the two ends of the metal surface layer along the depth direction of the bridge opening are provided with outer flanges, and the outer flanges at the two ends of the metal surface layer are shielded at the two ends of the filling gap so that the filling gap forms a closed cavity.
6. The arch bridge reinforcing method based on the folded steel plates as claimed in claim 1 or 2, wherein in the step A, two trenches are formed on both sides of the bridge opening hardened pavement in the width direction of the bridge opening by digging the bridge opening hardened pavement along both sides of the bridge opening hardened pavement in the width direction of the bridge opening, and the distance between the two trenches of the bridge opening hardened pavement is the designed width of the bridge opening; and B, inserting two end heads of the metal surface layer in the width direction of the bridge opening into the two trenches in a one-to-one correspondence mode, and fixing the end heads and the hardened pavement of the bridge opening together through expansion bolts.
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| CN203684208U (en) * | 2013-11-20 | 2014-07-02 | 长安大学 | Prefabricated tubular pile used for constructing roads and bridges and with externally-extending rod piece |
| CN206376256U (en) * | 2017-01-12 | 2017-08-04 | 张立彦 | A kind of civil engineering slope anchorage device |
| CN111676836A (en) * | 2020-04-22 | 2020-09-18 | 青海路拓工程设施制造集团有限公司 | Reinforcing construction method for corrugated steel of existing old small bridges and culverts |
| CN112942298B (en) * | 2021-02-02 | 2022-07-29 | 阳江市源丰建设工程有限公司 | Consolidation method of silt soft foundation |
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