CN109457571B - Construction method for repairing ground deformation joint - Google Patents
Construction method for repairing ground deformation joint Download PDFInfo
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- CN109457571B CN109457571B CN201811372381.0A CN201811372381A CN109457571B CN 109457571 B CN109457571 B CN 109457571B CN 201811372381 A CN201811372381 A CN 201811372381A CN 109457571 B CN109457571 B CN 109457571B
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Abstract
The invention discloses a construction method for repairing ground deformation joints, which comprises the steps of breaking surface concrete, building a water retaining wall, dredging, plugging, filling an expansion water stop strip, performing interface treatment, planting ribs, arranging upturned beam reinforcing steel bars, pre-embedding a first grouting pipe, arranging a first polyethylene foam plastic plate, arranging an upturned beam template, coating interface glue, pouring cement-based grouting material, maintaining and removing a mold, arranging a first steel plate water stop belt, a newly-added beam reinforcing steel bar, a second grouting pipe, channel steel, angle steel, a newly-added beam template, pouring the cement-based grouting material, maintaining and removing the mold, arranging an L-shaped steel plate and grouting, arranging a second polyethylene foam plastic plate, a second steel plate water stop belt, a third steel plate water stop belt, pouring non-cured asphalt, arranging a cover plate and arranging a drainage blind drain. According to the construction method, the multiple water stopping components are arranged, the upturning beam and the newly added beam are arranged to reinforce the deformation joint area, the water stopping facility components are protected, corrosion damage to the deformation joint is reduced, the water stopping and draining effects are good, and the quality of the deformation joint is improved.
Description
Technical Field
The invention relates to the field of engineering construction, in particular to a construction method for repairing a ground deformation joint.
Background
In the existing engineering, the deformation joint structure is often damaged seriously due to factors such as insufficient anti-floating capacity and uneven settlement of a foundation of a reinforced concrete bottom plate, severe water seepage of different degrees exists at the deformation joint, and the water stop steel plate and the rubber water stop belt at the deformation joint have the conditions of corrosion, damage, cracking, bulging and the like of different degrees, so that the deformation joint needs to be repaired safely and qualitatively.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, the deformation joint structure is seriously damaged due to the factors of insufficient anti-floating capacity, uneven settlement of a foundation and the like of a reinforced concrete bottom plate, the deformation joint has serious water seepage in different degrees, and a water-stopping steel plate and a rubber water-stopping belt in the deformation joint have corrosion, damage, cracking, bulging and the like in different degrees, so that the deformation joint needs to be repaired safely and qualitatively, and provides a construction method for repairing the ground deformation joint.
In order to achieve the above purpose, the invention provides the following technical scheme:
a construction method for repairing a ground deformation joint comprises the following steps:
A. breaking surface layer concrete at the original damaged deformation joint, plugging two sides of drainage ditches at two sides of a road after breaking, building water retaining walls at two ends of a broken surface, cleaning sludge sundries in a deformation joint reinforced concrete bottom plate, and grouting and plugging the original structure bottom plate until no obvious leakage point exists;
B. processing the joint of the deformation joint and the water stop strip, cleaning the surface, keeping the surface clean and free of impurities, embedding the water stop strip expanding when encountering water in the reserved groove, and painting sealant on the water stop strip;
C. interface treatment of new and old concrete, polishing a surface layer (original and old concrete) of base layer concrete until a solid base layer (fresh stones are exposed) is leaked, cleaning, washing, drying and leveling the polished surface, planting bars in a bottom plate, connecting upper turning beam steel bars above the steel bars planted in the bottom plate, pre-embedding a first grouting pipe, arranging a first polyethylene foam plastic plate on the surface of a deformation joint and above a water-swelling water stop strip, connecting the first polyethylene foam plastic plate to the steel bars on two sides of the upper turning beam, arranging upper turning beam pouring templates and sealing joints (between the upper turning beam pouring templates, between the upper turning beam pouring templates and the concrete bottom plate, between the upper turning beam pouring templates and the first polyethylene foam plastic plate), and smearing interface glue on the surface layer concrete of the base layer;
D. pouring cement-based grouting material through a first pre-embedded grouting pipe, grouting from one side until the grouting material overflows from the other side, and maintaining and removing a formwork after grouting is finished to form an upturning beam;
E. arranging a first steel plate waterstop above a first polyethylene foam plastic plate, connecting the first steel plate waterstop to upturned beams on two sides, planting ribs in the upturned beams, connecting new beam reinforcing steel bars above the embedded ribs of the upturned beams, pre-embedding a second grouting pipe, arranging channel steel on two sides of the first steel plate waterstop, connecting the channel steel to the new beam reinforcing steel bars, arranging new beam pouring templates and sealing seams (between the new beam pouring templates, between the new beam pouring templates and the upturned beam top surfaces, and between the new beam pouring templates and the channel steel), and arranging angle steel at the tops of the new beam reinforcing steel bars on two sides above the channel steel;
F. grouting cement-based grouting material from one side until the grouting material overflows from the other side by using a pre-embedded second grouting pipe, and maintaining and removing the formwork after grouting to form a newly-added beam;
G. after all grouting materials of the deformation joint are poured, connecting an L-shaped steel plate between the channel steel and the angle steel, and then respectively grouting the upward-turning beam, the newly-added beam and the L-shaped steel plate of the deformation joint through a high-pressure grouting pipe;
H. a second polyethylene foam plastic plate and a second steel plate water stop are arranged between the two channel steels, the second steel plate water stop is positioned in the middle of the second polyethylene foam plastic plate, a third steel plate water stop is arranged between the top ends of the two channel steels, non-solidified asphalt is poured into the area among the third steel plate water stop, the L-shaped steel plate and the angle steel, and then a cover plate is arranged between the two angle steels;
I. and transverse drainage blind ditches are arranged on two sides of the deformation joint and communicated with the drainage ditch.
By adopting the construction method for repairing the ground deformation joint, the original damaged deformation joint surface layer concrete is broken, the deformation joint is constructed again, the multiple water stop members are arranged, the deformation joint area is reinforced by arranging the upturning beam and the newly added beam, the water stop facility members are protected, the drainage blind ditch is arranged for drainage and seepage, the corrosion damage to the deformation joint is reduced, the structural life of the deformation joint is prolonged, the water stop and drainage effects are good, and the quality of the deformation joint is improved.
Preferably, before the step A is executed, the silt behind the side wall and under the bottom plate at the deformation joint is solidified and grouted.
Preferably, in the step C, the elevation of the top surface of the steel bar is controlled when the steel bar of the upturning beam is bound, and the error is less than or equal to 5 mm.
Preferably, in the step E, before the new beam steel bars are bound, the support frames are erected, the support frame steel pipes are longitudinally arranged along the deformation joint, the distance between every two adjacent support frame steel pipes is 80-120cm, and after the new beam steel bars are bound and fixed, the support frames are removed.
Preferably, the support frame steel pipes are arranged at equal intervals.
Preferably, in the step E, the elevation of the top surface of the steel bar is controlled when the new beam steel bar is bound, and the error is less than or equal to 10 mm.
Preferably, in the step C, the first grouting pipe is laid flat and fixed on the concrete surface, and in the step E, the second grouting pipe is laid flat and fixed on the concrete surface.
Preferably, the first steel plate waterstop, the second steel plate waterstop and the third steel plate waterstop are stainless steel members, the channel steel is a carbon steel member, and the first steel plate waterstop, the second steel plate waterstop and the third steel plate waterstop are all bonded with the channel steel.
Preferably, the first steel plate water stop is a U-shaped steel plate water stop, the second steel plate water stop is a V-shaped or M-shaped steel plate water stop, and the third steel plate water stop is a V-shaped or M-shaped steel plate water stop.
Preferably, 7-15mm graded broken stones are filled in the drainage underdrain and are wrapped by geotextile.
Preferably, when the newly added beam is constructed, the flatness of the edge-returning concrete and the flatness of the cover plate cannot be guaranteed to be the same, a layer of laitance exists on the edge-returning surface layer, the requirement of a travelling crane cannot be met, after the step H is executed, the top surface of the newly added beam is trimmed and polished to be flush with the cover plate, and then the step I is executed.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
by the construction method for repairing the ground deformation joint, the original damaged deformation joint surface layer concrete is broken, the deformation joint is constructed again, multiple water stop members are arranged, the deformation joint area is reinforced by the upturning beam and the newly added beam, the water stop facility members are protected, the drainage blind ditch is arranged for drainage and seepage, the corrosion damage to the deformation joint is reduced, the structural life of the deformation joint is prolonged, the water stop and drainage effects are good, and the quality of the deformation joint is improved.
Drawings
FIG. 1 is a schematic view of a deformation joint according to the present invention.
The labels in the figure are: the method comprises the following steps of 1-bottom plate, 2-deformation joint, 3-water swelling water stop, 4-upturning beam steel bar, 5-first grouting pipe, 6-first polyethylene foam plastic plate, 7-first steel plate water stop, 8-newly-added beam steel bar, 9-second grouting pipe, 10-channel steel, 11-angle steel, 12-L-shaped steel plate, 13-second polyethylene foam plastic plate, 14-second steel plate water stop, 15-third steel plate water stop, 16-non-cured asphalt, 17-cover plate and 18-drainage hidden ditch.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Examples
As shown in FIG. 1, the construction method for repairing the ground deformation joint comprises the following steps:
A. in order to prevent the dangerous situation of water and sand gushing after the surface layer concrete is broken, the silt behind the side wall at the deformation joint 2 and below the bottom plate 1 is solidified and grouted, the subsequent process construction is carried out after the grouting strength reaches the design requirement, and as the grouting is carried out at blind spots and a layer of sand inclusion stone is arranged between the surface layer and the floor concrete, the grouting and leaking stoppage can not stop open water, and only the silt can be solidified preliminarily;
B. breaking surface layer concrete at the original damaged deformation joint 2, plugging two sides of drainage ditches at two sides of a road after breaking, building water retaining walls at two ends of a broken surface, cleaning sludge sundries in the reinforced concrete bottom plate 1 of the deformation joint 2, and grouting and plugging the original structure bottom plate 1 until no obvious leakage point exists;
the accurate position of the center line of the deformation joint 2 is difficult to determine, and meanwhile, in order to ensure the normal operation of subsequent construction and not to damage the original structure outside the damaged area, the width of the concrete damaged area of the surface layer is 260cm, and the depth is 90 cm;
when the surface concrete is cut, cutting the surface concrete along a control line by using a diesel cutting machine, wherein the thickness of the original surface concrete plate is 20cm, cutting the surface concrete in multiple layers, controlling the single-layer cutting depth within 3-5cm, and manually breaking the surface concrete by using an air compressor (preventing the original structure from being damaged due to overlarge vibration when a breaker is broken to cause water gushing and sand gushing risks), wherein the breaking process follows the principle from inside to outside and from the center to two sides to prevent the concrete layer outside the broken region from being damaged;
the deformation joint 2 is blocked at two sides of a drainage ditch after being broken, the drainage pipe is bridged to ensure that water flow is smooth and does not flow to the deformation joint 2, the blocking is built by brick-concrete, the blocked royal facing is closed, the sand and concrete blocks remained at the bottom and the side wall of the drainage ditch at the building position are chiseled, the drainage pipe is embedded after chiseling is finished, then two ends of the drainage pipe are embedded by mixed blocked royal jelly, the embedding width is 18cm, the thickness is 15cm, the top surface is ensured to be flat after embedding is finished, a plurality of rows of smooth bricks are built at the top until the height is equal to the top surface of the drainage ditch, finally, 3cm blocked royal jelly is adopted to seal three surfaces, a water blocking wall close to the water blocking wall is arranged before building, water sources at two sides are temporarily blocked by adopting a single-layer sand bag and color strip cloth, most of water flow is guided to the drainage ditches at two sides, when the water flow in the building range is small, the thickness of the cushion layer is 5cm, a plurality of rows of butyl bricks are built on the cushion layer after the cushion layer is leveled, the building is completed, the 3cm leakage stoppage king three-side sealing is adopted, and the temporary sand bag enclosure is removed after the strength of the water retaining wall meets the requirement;
after the water retaining wall is built, cleaning sludge in a bottom plate of the deformation joint 2, wherein the cleaning mode is water flushing, and a sewage pump is adopted for pumping and discharging slurry, when a single deformation joint 2 is subjected to dredging, two 3kw sewage pumps are arranged in the deformation joint 2 for flushing and pumping and discharging, and finally, a mop is adopted for wiping and cleaning residual accumulated water;
grouting and plugging the original structural bottom plate, checking → picking and chiseling → cleaning the groove → filling the waterproof and plugging agent → drilling → cleaning the hole → grouting circulation for 2-3 times → surface layer recovery until no obvious leakage point exists;
C. processing the joint surface of the deformation joint 2 and the water stop strip, cleaning the surface, keeping the surface clean and free of impurities, embedding the water stop strip 3 expanding when meeting water in a reserved groove, and painting a plurality of layers of sealant on the water stop strip;
because of 2 both sides concrete loose structures of movement joint are more, for guaranteeing 3 installation quality of water inflation sealing rod, need handle movement joint 2 and sealing rod looks joint face: firstly, removing an expansion water stop strip 3 filled in an original bottom plate 1, picking and chiseling loose concrete and sundries at a deformation joint 2 by using a hand hammer and a steel chisel, wherein the removing depth of the sundries in the deformation joint 2 is required to be controlled within 10cm during chiseling, removing accumulated water and residues on the upper part of the deformation joint 2 by using a steel wire brush after chiseling is finished, keeping the drying, uniformly coating a layer of interface adhesive on two sides of the deformation joint 2 after chiseling, then brushing the finished groove bottom by using polymer mortar, wherein the brushing thickness is 5cm, the brushing surface is required to be smooth, re-filling the expansion water stop strip 3 with water of 30mm multiplied by 60mm, cleaning the inner surface of a reserved groove, keeping the surface clean and free from sundries, inserting the expansion water stop strip 3 in the reserved groove, and brushing a plurality of layers of sealants on the inner surface;
D. the method comprises the following steps of interface treatment of new and old concrete, polishing a surface layer (original old concrete) of base layer concrete to a polishing depth of 1-2cm until a solid base layer (fresh stones are exposed), cleaning, washing, drying and leveling a polished surface, planting bars in a bottom plate 1, connecting upturned beam steel bars 4 above the planted bars of the bottom plate 1, controlling the top surface elevation of the steel bars when the upturned beam steel bars 4 are bound, wherein the error is less than or equal to 5mm, pre-embedding first grouting pipes 5, flatly placing and fixing the first grouting pipes 5 on the concrete surface, arranging first polyethylene foam plastic plates 6 on the surface of deformation joints 2 and above water-swelling water stops 3, connecting the first polyethylene foam plastic plates 6 to the steel bars on two sides of the upturned beam, and sealing joints (between the upturned beam casting templates, between the upturned beam casting templates and the concrete bottom plate 1), Between the upper turning beam pouring template and the first polyethylene foam plastic plate 6), coating interface glue on the surface layer of the base concrete;
the method comprises the following steps of (1) planting steel bars on a bottom plate, determining the drilling position → drilling, → cleaning a channel → cleaning steel bars → implanting steel bars → solidifying glue → inspecting, planting steel bars with HRB400E phi 12 at an interval of 200mm and a steel bar planting depth of 120mm, bending the ends of the planted steel bars at 90 degrees, ensuring the bending length to be 6cm for welding, drilling by using an electric hand drill, ensuring the verticality during drilling, cleaning the channel by using a steel brush, an air machine and the like after hole forming, washing the hole by using acetone until the channel is cleaned, removing rust on the planted steel bars by using a grinding wheel mill until no dirt exists on the surface of the steel bars, injecting prepared steel bar planting glue into the channel, slowly implanting the steel bars, enabling the glue to be just extruded out of the channel, drawing the planted bars for inspecting after the steel bar planting glue is solidified, and performing the next procedure after the steel;
installing a first grouting pipe 5, placing the first grouting pipe 5 in the middle of a structural joint, wherein the minimum thickness of the first grouting pipe 5 away from a free face of a structure is 70mm to ensure grouting pressure required by grouting effect, horizontally placing a main grouting pipe on the surface of concrete, drilling holes at intervals of 200mm by using a percussion drill and installing a fixing clamp to fix the grouting pipe (ensuring that the grouting pipe is tightly attached to the surface of original bottom plate concrete), respectively leading out a grouting guide pipe along two ends of the first grouting pipe 5 at intervals of 5-6m, wherein the tail end of each guide pipe is temporarily and firmly sealed, the length of the grouting guide pipe led out of the concrete is more than or equal to 150mm, the turning radius of the first grouting pipe 5 at an axillary part is more than or equal to 150mm, the turning part is gentle and does not have a break angle, the lapping distance of two first grouting pipes 5 at the position needing lapping is 100mm, and the two first grouting pipes 5 are placed in parallel at intervals of 50mm, the lap joint part must be firmly fixed with the base surface;
the lap joint part of the first polyethylene foam plastic plate 6 is firmly bound by using a transparent adhesive tape, so that looseness and dislocation of the grouting material during pouring are prevented;
E. pouring cement-based grouting material into the pre-embedded first grouting pipe 5, grouting from one side until the grouting material overflows from the other side, and maintaining and removing the formwork after grouting to form the upturning beam;
determining the mixing ratio of water and grouting material according to the specification requirement of the grouting material, controlling the water temperature of stirring water of the grouting material to be between 15 and 30 ℃, calculating the grouting material and the water according to the weight ratio, wherein the weight error is less than 1 percent so as to ensure that the grouting is not caked and uniform consistency is achieved, and because the initial setting time of the grouting material is short, the grouting material stirred each time is not too much, the stirred grouting material is used up in the grouting material, the grouting material which has reached the initial setting can not be used, the grouting must be continuously carried out after half an hour, the grouting time is shortened as far as possible, the vibration is strictly forbidden in the grouting process, the proper insertion and tamping can be carried out, and the full and compact size of the repair reinforcement section is ensured;
immediately covering a layer of film on the surface of the grouting material after grouting is finished, starting covering and curing with moist geotextile within 2-5 hours, avoiding vibration within 24 hours, prohibiting travelling before the strength is reached, starting watering and curing after pouring is finished for 24 hours, setting the grouting material for 5 hours, removing a template after the setting strength reaches 70%, hammering and checking after the grouting material is set, finding out air-blast sound, and performing filling treatment;
F. arranging a first steel plate waterstop 7 above a first polyethylene foam plastic plate 6, connecting the first steel plate waterstop 7 to upturned beams on two sides, planting ribs in the upturned beams, connecting a new beam reinforcing steel bar 8 above the upturned beam reinforcing steel bar, building a support frame before the new beam reinforcing steel bar 8 is bound, arranging support frame steel pipes at equal intervals along the longitudinal direction of a deformation joint 2, controlling the distance between adjacent support frame steel pipes to be 100cm, controlling the elevation of the top surface of the reinforcing steel bar when the new beam reinforcing steel bar 8 is bound, controlling the error to be less than or equal to 10mm, removing the support frame after the new beam reinforcing steel bar 8 is bound and fixed, pre-embedding a second grouting pipe 9, horizontally placing and fixing the second grouting pipe 9 on the concrete surface, arranging channel steel 10 on two sides of the first steel plate waterstop 7, connecting the channel steel 10 to the new beam reinforcing steel bar 8, and then arranging new beam pouring formworks and sealing joints (between the new beam pouring formworks, between the newly added beam pouring template and the channel steel 10), angle steel 11 is arranged at the tops of newly added beam steel bars 8 on two sides above the channel steel 10;
G. grouting cement-based grouting material through a pre-embedded second grouting pipe 9, grouting from one side until the grouting material overflows from the other side, and maintaining and removing the formwork after grouting to form a newly-added beam;
immediately covering a layer of film on the surface of the grouting material after grouting is finished, beginning to change and maintain the grouting material by using moist geotextile within 2-5 hours, avoiding vibration within 24 hours, forbidding travelling before the strength is reached, starting to spray water for maintenance after the grouting is finished within 24 hours, setting the grouting material for 5 hours, dismantling a template after the setting strength reaches 70%, hammering and checking the grouting material after the setting, finding out air-blast sound, and performing filling supplement treatment;
H. after all grouting materials of the deformation joint 2 are poured and the strength is qualified, connecting an L-shaped steel plate 12 between the channel steel 10 and the angle steel 11, and then respectively grouting the upper turning beam, the newly added beam and the L-shaped steel plate 12 of the deformation joint 2 through high-pressure grouting pipes;
using a high-pressure grouting machine to fill acrylate into a high-pressure grouting pipe, controlling grouting pressure to be 0.2-0.5MPa from one side to the other side on the next course in the grouting sequence, stopping grouting observation for 1-2 minutes when the exhaust hole is grouted, taking out a grouting nozzle to perform next conduit grouting, removing the grouting nozzle after the grouting is finished, and sealing the grouting hole;
I. a second polyethylene foam plastic plate 13 and a second steel plate water stop belt 14 are arranged between the two channel steels 10, the second steel plate water stop belt 14 is positioned in the middle of the second polyethylene foam plastic plate 13, a third steel plate water stop belt 15 is arranged between the top ends of the two channel steels 10, non-solidified asphalt 16 is poured into the area among the third steel plate water stop belt 15, the L-shaped steel plate 12 and the angle steel 11, and then a cover plate 17 is arranged between the two angle steels 11;
J. when the newly added beam is constructed, the flatness of the edge-returning concrete and the flatness of the cover plate 17 cannot be guaranteed to be the same, a layer of laitance exists on the edge-returning surface layer, the requirement of a traveling crane cannot be met, and the top surface of the newly added beam is trimmed and polished to be flush with the cover plate 17;
K. when the pavement is constructed, in order to prevent the profiled steel sheet and the bottom plate from water seepage to cause secondary damage to the deformation joint 2 structure, when a 100mm thick fine stone concrete layer of the bottom layer of the anti-floating plate is constructed, the two sides of the deformation joint 2 are provided with transverse drainage blind ditches 18, 7-15mm graded broken stones are filled in the drainage blind ditches 18, geotextile packages are arranged in the drainage blind ditches, and the drainage blind ditches 18 are communicated with drainage ditches.
In a preferred embodiment of the present invention, the first steel plate water stop 7 is a U-shaped steel plate water stop, the second steel plate water stop 14 is a V-shaped steel plate water stop, the third steel plate water stop 15 is a V-shaped steel plate water stop, the first steel plate water stop 7, the second steel plate water stop 14, and the third steel plate water stop 15 are all stainless steel members, the channel steel 10 is a carbon steel member, and the first steel plate water stop 7, the second steel plate water stop 14, and the third steel plate water stop 15 are all bonded to the channel steel 10.
By the aid of the construction method for repairing the ground deformation joint, original concrete on the surface layer of the damaged deformation joint 2 is broken, the deformation joint 2 is constructed again, multiple water-stopping components are arranged, the deformation joint 2 area is reinforced by the aid of the upturning beam and the newly-added beam, water-stopping facility components are protected, the drainage blind ditches 18 are arranged for drainage and seepage, corrosion damage to the deformation joint 2 is reduced, the structural life of the deformation joint 2 is prolonged, the construction method is good in water-stopping and drainage effects, and the quality of the deformation joint 2 is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A construction method for repairing a ground deformation joint (2) is characterized by comprising the following steps:
A. breaking surface layer concrete at the original damaged deformation joint (2), plugging two sides of drainage ditches at two sides of a road after breaking, building water retaining walls at two ends of a broken surface, cleaning sludge sundries in a reinforced concrete bottom plate (1) of the deformation joint (2), and grouting and plugging the original structure bottom plate (1);
B. processing the joint surface of the deformation joint (2) and the water stop strip, cleaning the surface, embedding the water stop strip (3) which expands when meeting water in a reserved groove, and painting sealant on the water stop strip;
C. interface treatment of new and old concrete, polishing a surface layer of base layer concrete, planting ribs in a bottom plate (1), connecting upturned beam steel bars (4) above the planted ribs of the bottom plate (1), pre-burying and arranging first grouting pipes (5), arranging first polyethylene foam plastic plates (6) on the surfaces of deformation joints (2) and above water-swelling water stop strips (3), connecting the first polyethylene foam plastic plates (6) to the steel bars on two sides of the upturned beam, arranging upturned beam pouring templates and sealing joints, and smearing interface glue on the surface layer of the base layer concrete;
D. grouting cement-based grouting material from one side until the grouting material overflows from the other side by using a pre-embedded first grouting pipe (5), and maintaining and removing the formwork after the grouting is finished;
E. arranging a first steel plate water stop belt (7) above a first polyethylene foam plastic plate (6), connecting the first steel plate water stop belt (7) to an upturning beam on two sides, planting ribs in the upturning beam, connecting a newly-added beam reinforcing steel bar (8) above the upturning beam planting ribs, pre-embedding a second grouting pipe (9), arranging channel steel (10) on two sides of the first steel plate water stop belt (7), connecting the channel steel (10) to the newly-added beam reinforcing steel bar (8), then arranging a newly-added beam pouring template and sealing seams, and arranging angle steel (11) at the top of the newly-added beam reinforcing steel bar (8) on two sides above the channel steel (10);
F. grouting cement-based grouting material through a pre-embedded second grouting pipe (9), grouting from one side until the grouting material overflows from the other side, and maintaining and removing the formwork after grouting is finished;
G. after all grouting materials of the deformation joint (2) are poured, an L-shaped steel plate (12) is connected between the channel steel (10) and the angle steel (11), and then grouting is respectively carried out on the upward-turning beam, the newly-added beam and the L-shaped steel plate (12) of the deformation joint (2) through a high-pressure grouting pipe;
H. a second polyethylene foam plastic plate (13) and a second steel plate water stop belt (14) are arranged between the two channel steels (10), the second steel plate water stop belt (14) is positioned in the middle of the second polyethylene foam plastic plate (13), a third steel plate water stop belt (15) is arranged between the top ends of the two channel steels (10), non-solidified asphalt (16) is poured into the area among the third steel plate water stop belt (15), the L-shaped steel plate (12) and the angle steel (11), and then a cover plate (17) is arranged between the two angle steel (11);
I. and transverse drainage blind ditches (18) are arranged at two sides of the deformation joint (2), and the drainage blind ditches (18) are communicated with a drainage ditch.
2. The construction method for repairing a ground deformation joint (2) according to claim 1, wherein before the step A, the sand and sand under the bottom plate (1) and behind the back of the side wall at the deformation joint (2) are solidified and grouted.
3. The construction method for repairing the ground deformation joint (2) according to the claim 1, wherein in the step C, the elevation of the top surface of the steel bar is controlled when the upturned beam steel bar (4) is bound, and the error is less than or equal to 5 mm.
4. The construction method for repairing the ground deformation joint (2) according to claim 1, wherein in the step E, a support frame is erected before the newly added beam steel bars (8) are bound, support frame steel pipes are longitudinally arranged along the deformation joint (2), and the distance between every two adjacent support frame steel pipes is 80-120 cm.
5. The construction method for repairing the ground deformation joint (2) according to the claim 1, wherein in the step E, the elevation of the top surface of the steel bar is controlled when the newly added beam steel bar (8) is bound, and the error is less than or equal to 10 mm.
6. The construction method for repairing a ground deformation joint (2) according to claim 1, wherein in step C, the first grouting pipe (5) is laid flat and fixed on the concrete surface, and in step E, the second grouting pipe (9) is laid flat and fixed on the concrete surface.
7. The construction method for repairing the ground deformation joint (2) according to claim 1, wherein the first steel plate water stop (7), the second steel plate water stop (14) and the third steel plate water stop (15) are all stainless steel members, the channel steel (10) is a carbon steel member, and the first steel plate water stop (7), the second steel plate water stop (14) and the third steel plate water stop (15) are all bonded with the channel steel (10).
8. The construction method for repairing a ground deformation joint (2) according to claim 1, wherein the first steel plate water stop (7) is a U-shaped steel plate water stop, the second steel plate water stop (14) is a V-shaped or M-shaped steel plate water stop, and the third steel plate water stop (15) is a V-shaped or M-shaped steel plate water stop.
9. The construction method for repairing a ground deformation joint (2) according to claim 1, wherein the drainage underdrain (18) is filled with 7-15mm graded crushed stone and provided with a geotextile wrap.
10. The construction method for repairing the ground deformation joint (2) according to any one of claims 1 to 9, wherein during construction of the newly added beam, the flatness of the edge-returning concrete and the cover plate (17) cannot be guaranteed to be the same, a layer of laitance exists on the edge-returning surface layer, the requirement of a traveling crane cannot be met, after the step H is executed, the top surface of the newly added beam is trimmed and polished to be level with the cover plate (17), and then the step I is executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811372381.0A CN109457571B (en) | 2018-11-16 | 2018-11-16 | Construction method for repairing ground deformation joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811372381.0A CN109457571B (en) | 2018-11-16 | 2018-11-16 | Construction method for repairing ground deformation joint |
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| CN109457571A CN109457571A (en) | 2019-03-12 |
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| CN110206561A (en) * | 2019-05-30 | 2019-09-06 | 中国神华能源股份有限公司神朔铁路分公司 | Disease in Tunnel Base point processing method |
| CN111021425B (en) * | 2019-12-05 | 2021-11-16 | 中冶天工集团天津有限公司 | Seepage-proofing construction method for deformation joint of underground pipe gallery |
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| 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 |
| CN108660950A (en) * | 2018-06-28 | 2018-10-16 | 张维秀 | A kind of road and bridge crack reparation fixing device |
| CN108708453A (en) * | 2018-06-05 | 2018-10-26 | 中冶东北建设（沈阳）工程技术有限公司 | Basementwaterproofing construction method |
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| US4439070A (en) * | 1981-07-23 | 1984-03-27 | Dimmick Floyd E | Method for restoring an underwater piling and an underwater jacket used therewith |
| CN102817382A (en) * | 2012-08-30 | 2012-12-12 | 苏州市建筑科学研究院有限公司 | Repair constructing method of basement deformation joint leakage |
| 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 |
| CN108708453A (en) * | 2018-06-05 | 2018-10-26 | 中冶东北建设（沈阳）工程技术有限公司 | Basementwaterproofing construction method |
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