CN115182389A - Subway Cheng Xin old concrete structure junction anti-seepage structure and construction process - Google Patents
Subway Cheng Xin old concrete structure junction anti-seepage structure and construction process Download PDFInfo
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- CN115182389A CN115182389A CN202210870271.7A CN202210870271A CN115182389A CN 115182389 A CN115182389 A CN 115182389A CN 202210870271 A CN202210870271 A CN 202210870271A CN 115182389 A CN115182389 A CN 115182389A
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000010426 asphalt Substances 0.000 claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 230000002265 prevention Effects 0.000 claims abstract description 10
- 238000005485 electric heating Methods 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- 230000002238 attenuated effect Effects 0.000 abstract description 3
- 239000012466 permeate Substances 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 3
- 238000005253 cladding Methods 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000004760 aramid Substances 0.000 description 3
- 229920006231 aramid fiber Polymers 0.000 description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/04—Watertight packings for use under hydraulic pressure
Abstract
A water seepage prevention structure for a joint of a metro Cheng Xin old concrete structure and a construction process thereof are disclosed, wherein a water seepage source is blocked fundamentally by arranging a water stop steel plate and a waterproof layer on the water facing side of the joint of a new concrete structure and an old concrete structure; the expansion water stop strip and the grouting pipe are arranged on the joint surface of the old concrete structure and the new concrete structure, so that the water seepage pressure in the water seepage passage is blocked or attenuated; arranging a pressurized waterproof jacket on the exposed side of the joint of a new concrete structure and an old concrete structure, and filling non-cured rubber asphalt in the pressurized waterproof jacket under pressure to block the final exposed water seepage point; the construction process of the seepage-proofing structure at the junction of the new concrete structure and the old concrete structure in the subway engineering comprises the steps of pumping non-cured rubber asphalt into a pressurized waterproof jacket through an asphalt pump, and utilizing the non-cured rubber asphalt to permeate into a water seepage point channel to plug a water seepage point, so that the problem of water seepage at the junction of the new concrete structure and the old concrete structure in the subway engineering is solved.
Description
Technical Field
The invention relates to the technical field of design and construction methods of anti-seepage structures at junctions of new and old concrete structures, in particular to an anti-seepage structure at a junction of a subway Cheng Xin old concrete structure and a construction process.
Background
In underground engineering structures such as subways and underground garages, the problem of connection between new and old concrete structures is often encountered, construction joints inevitably exist between the new and old concrete structures, and when the underground water level is shallow, the problem of water seepage can be caused at the construction joints; in order to solve the problem, a large number of water seepage prevention structure designs at the joint of new and old concrete are proposed, but the problems are not completely solved in the practical engineering application; if in subway construction, the construction joint at the joint of the new concrete structure and the old concrete structure is influenced by various factors such as heating and general settlement of concrete construction, deformation, settlement and vibration of subway tunnels during operation, and the common anti-seepage structure design at the joint of the new concrete structure and the old concrete structure is applied to the subway construction.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a water seepage prevention structure at the junction of a metro Cheng Xin old concrete structure, wherein a water seepage source is blocked fundamentally by arranging a water stop steel plate and a waterproof layer on the water facing side of the structure at the junction of a new concrete structure and an old concrete structure; the expansion water stop strip and the grouting pipe are arranged on the joint surface of the old concrete structure and the new concrete structure, so that the water seepage pressure in the water seepage passage is blocked or attenuated; arranging a pressurized waterproof jacket on the exposed side of the joint of a new concrete structure and an old concrete structure, filling non-solidified rubber asphalt in the pressurized waterproof jacket under pressure, and plugging the final exposed water seepage point by adopting pressurized penetration; the construction process of the seepage-proofing structure at the junction of the new concrete structure and the old concrete structure in the subway engineering is to pump and inject non-cured rubber asphalt into the pressurized waterproof jacket through an asphalt pump so that the non-cured rubber asphalt permeates into a seepage point channel to plug a seepage point, thereby solving the problem of water seepage at the junction of the new concrete structure and the old concrete structure in the subway engineering.
In order to realize the purpose, the invention adopts the following technical scheme: a subway Cheng Xin old concrete structure junction seepage-proofing structure is characterized in that a water-stopping steel plate is arranged on the water-facing side of the structure at the junction of a new concrete structure and an old concrete structure, and a waterproof layer is arranged at the junction of the water-stopping steel plate and the water-facing side of the structure; the structure is arranged to block water seepage from the junction of a new concrete structure and an old concrete structure, the junction of the new concrete structure and the old concrete structure in the subway engineering is bound to have a gap due to the influence of various factors such as concrete construction heating, subway tunnel deformation, settlement, vibration and the like during subway operation after the construction of the new concrete structure is completed, the gap is bound to be enlarged and is influenced by the enlargement of the gap at the junction of the new concrete structure and the old concrete structure, the actual original waterproof structure arranged on the junction of the new concrete structure and the old concrete structure is likely to have a descending or losing effect, but the influence on the water stop steel plate and the waterproof layer arranged outside the junction of the old concrete structure and the new concrete structure is limited, and the long-term use stability of the water seepage prevention structure at the junction of the new concrete structure and the old concrete structure in the subway engineering is ensured.
Furthermore, an expansion water stop strip and a grouting pipe are fixedly arranged on the joint surface of the old concrete structure and the new concrete structure, and the expansion water stop strip expands when contacting with newly poured concrete to block a water seepage passage on the joint surface or attenuate the water seepage pressure in the water seepage passage; after the new concrete structure is poured, joint filling materials are evenly injected into the joint surfaces through the grouting pipes, and water seepage passages on the joint surfaces are blocked.
Furthermore, two expansion water stop bars are arranged and penetrate through the joint surface of the old concrete structure and the new concrete structure; the slip casting pipe is provided with a plurality of slip casting pipes, and the slip casting pipes are fixedly arranged between the two expansion water stop strips.
Furthermore, a pressurized waterproof jacket is fixedly arranged on the exposed side of the joint of the old concrete structure and the new concrete structure; a closed space is formed between the pressurized waterproof jacket and the exposed side of the joint of the new and old concrete structures, and non-cured rubber asphalt is pressurized and filled in the closed space; the non-solidified rubber asphalt is filled by adopting pressurization, so that the non-solidified rubber asphalt is infiltrated into the interface by pressure to finally block the water seepage point.
Furthermore, the pressurized waterproof cladding comprises a cladding shell, the cross section of the cladding shell is in a trapezoid groove shape, flange edges are arranged on two sides in a bending mode, the pressurized waterproof cladding is fixedly connected with a new and old concrete structure through the flange edges, after the construction of the new concrete structure is completed, due to the influences of various factors such as heating in concrete construction, deformation of subway tunnels, settlement, vibration during subway operation and the like, gaps are bound to exist at the junction of the new and old concrete structures in subway engineering and are likely to grow, when the gaps of the junction of the new and old concrete structures grow, waist parts on two sides of the trapezoid grooves on the cross section of the cladding shell are pulled towards two sides, the height of the trapezoid grooves on the cross section of the cladding shell is reduced, a closed space between the pressurized waterproof cladding and the new and old concrete structures becomes smaller, non-cured rubber asphalt filled in the closed space is in a compressive stress state, the gaps of the junction of the new and old concrete structures can be automatically filled with the non-cured rubber asphalt in the compressive stress state, and automatic plugging and repairing of the growing gaps of the new and old concrete structures in the subway engineering are actually completed; an electric heating tube and a plurality of asphalt injection ports are fixedly arranged on the inner side of the trapezoid groove of the package shell, and plugs are fixedly arranged on the outer end faces of the asphalt injection ports; the electric heating tube generates heat when injecting the non-solidified rubber asphalt into the pressurized waterproof jacket, so that the non-solidified rubber asphalt is always kept at a higher temperature in the injection process to keep better fluidity and permeability.
Furthermore, a plurality of through holes are symmetrically formed in the flange edges on the two sides of the cladding shell and used for penetrating through the expansion bolts; the flange edge is fixedly provided with a leakage-proof base plate at the contact side with the concrete structure, and the leakage-proof base plate is made of water-absorbing rubber and has good elasticity so as to ensure the sealing property between the flange edges at the two sides of the cladding shell and the contact surface of the concrete structure.
Furthermore, a plurality of rivet nuts are fixedly arranged on the inner side of the trapezoidal groove of the pack shell, the end parts of the rivet nuts are fixedly provided with electric heating tube fixing pieces through bolts, and the electric heating tubes are fixedly arranged in the trapezoidal groove of the pack shell through the electric heating tube fixing pieces; the outer side of the cladding shell is provided with a binding post which is electrically connected with the electric heating tube.
A subway construction Cheng Xin old concrete structure junction seepage prevention structure construction technology, a water stop steel plate and a waterproof layer are arranged before the old concrete structure is poured, namely the water stop steel plate and the waterproof layer are actually used as a part of the subway construction concrete structure; the contact sides of the water stop steel plates and the old concrete structure and the new concrete structure are welded with a plurality of supporting steel bars, and the supporting steel bars are tied up and connected with steel bar cages in the old concrete structure and the new concrete structure; and the pressurized waterproof jacket and the non-cured rubber asphalt are arranged after the new concrete structure is poured, and the non-cured rubber asphalt in the pressurized waterproof jacket is injected by an asphalt pump to finish the plugging of a water seepage point.
Due to the adoption of the technical scheme, the invention has the following beneficial effects: the invention discloses a water seepage prevention structure at the junction of a metro Cheng Xin old concrete structure, which is characterized in that a water seepage source is blocked fundamentally by arranging a water stop steel plate and a waterproof layer on the water facing side of the structure at the junction of a new concrete structure and an old concrete structure; the expansion water stop strip and the grouting pipe are arranged on the joint surface of the old concrete structure and the new concrete structure, so that the water seepage pressure in the water seepage passage is blocked or attenuated; arranging a pressurized waterproof jacket on the exposed side of the joint of a new concrete structure and an old concrete structure, filling non-solidified rubber asphalt in the pressurized waterproof jacket under pressure, and plugging the final exposed water seepage point by adopting pressurized penetration; the construction process of the seepage-proofing structure at the junction of the new concrete structure and the old concrete structure in the subway engineering comprises the steps of pumping non-solidified rubber asphalt into a pressurized waterproof jacket through an asphalt pump, so that the non-solidified rubber asphalt permeates into a seepage point channel to plug a seepage point, and the seepage problem at the junction of the new concrete structure and the old concrete structure in the subway engineering is solved.
Drawings
FIG. 1 is a schematic view I of a seepage-proofing structure at the junction of a new concrete structure and an old concrete structure in subway engineering;
FIG. 2 is a schematic view of a seepage-proofing structure II at the junction of new and old concrete structures in subway engineering;
FIG. 3 is an enlarged schematic view of a part A of a water seepage prevention structure at the junction of a new concrete structure and an old concrete structure in subway engineering;
FIG. 4 is an enlarged schematic view of a part B of a water seepage prevention structure at the junction of a new concrete structure and an old concrete structure in subway engineering;
FIG. 5 is a schematic view of the inside structure of the pressurized waterproof jacket;
FIG. 6 is a schematic view of a cross-sectional view C-C of the pressurized waterproof jacket;
FIG. 7 is a schematic view of a cross-sectional view D-D of the pressurized waterproof enclosure;
FIG. 8 is an enlarged view of a section structure part E of a pressurized waterproof jacket D-D;
FIG. 9 is a schematic view of the outer side of the pressurized waterproof enclosure;
FIG. 10 is a schematic view of the actual installation of the pressurized waterproof enclosure;
FIG. 11 is a schematic sectional view of an initial state of a watertight structure at a junction of a new concrete structure and an old concrete structure in a subway engineering;
FIG. 12 is a schematic sectional view of the state of the junction of the new concrete structure and the old concrete structure in the subway engineering after the seepage-proofing structure changes.
In the figure: 1. an old concrete structure; 2. a new concrete structure; 3. the structure water-facing side; 4. a water stop steel plate; 5. a waterproof layer; 6. an expansion water stop bar; 7. a grouting pipe; 8. pressurizing the waterproof jacket; 8.1, a shell body; 8.2, an asphalt injection port; 8.3, an electric heating pipe; 8.4, a leakage-proof base plate; 8.5, a plug; 8.6, pulling and riveting the nut; 8.7, an electric heating tube fixing sheet; 8.8, a binding post; 9. non-cured rubber asphalt; 10. aramid fabric; 11. and (6) blocking the baffle.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
A water stop steel plate 4 is arranged on a water facing side 3 of a structure at the joint of an old concrete structure 1 and a new concrete structure 2; a waterproof layer 5 is arranged at the joint of the water stop steel plate 4 and the water facing side 3 of the structure; an expansion water stop bar 6 and a grouting pipe 7 are fixedly arranged on the joint surface of the old concrete structure 1 and the new concrete structure 2; two expansion water stop bars 6 are arranged and penetrate through the joint surface of the old concrete structure 1 and the new concrete structure 2; the grouting pipes 7 are arranged in number, and the grouting pipes 7 are fixedly arranged between the two expansion water stop bars 6; a pressurized waterproof jacket 8 is fixedly arranged on the exposed side of the joint of the old concrete structure 1 and the new concrete structure 2; a closed space is formed between the pressurized waterproof jacket 8 and the exposed side of the joint of the old concrete structure 1 and the new concrete structure 2, and non-cured rubber asphalt 9 is pressurized and filled in the closed space;
the pressurized waterproof cladding 8 comprises a cladding body 8.1, the cross section of the cladding body 8.1 is in a shape of a trapezoid groove, and flange edges are arranged on two sides in a bending mode; an electric heating tube 8.3 and a plurality of asphalt injection openings 8.2 are fixedly arranged on the inner side of the trapezoidal groove of the packaging shell 8.1, and plugs 8.5 are fixedly arranged on the outer end faces of the asphalt injection openings 8.2; a plurality of through holes are symmetrically formed in the flange edges on the two sides of the packing shell body 8.1, and a leakage-proof base plate 8.4 is fixedly arranged on the contact side of the flange edges and the concrete structure; a plurality of rivet nuts 8.6 are fixedly arranged on the inner side of the trapezoid-shaped groove of the package shell 8.1, the end parts of the rivet nuts 8.6 are fixedly provided with electric heating tube fixing pieces 8.7 through bolts, and the electric heating tube 8.3 is fixedly arranged in the trapezoid-shaped groove of the package shell 8.1 through the electric heating tube fixing pieces 8.7; the outer side of the packaging shell 8.1 is provided with a binding post 8.8, and the binding post 8.8 is electrically connected with the electric heating tube 8.3.
A construction process of a water seepage prevention structure at the junction of an old concrete structure Cheng Xin by a subway is characterized in that a water stop steel plate 4 and a waterproof layer 5 are arranged before the old concrete structure 1 is poured; the contact sides of the water stop steel plates 4 and the old concrete structure 1 and the new concrete structure 2 are provided with a plurality of supporting steel bars in a welding mode, and the supporting steel bars are connected with steel bar cages in the old concrete structure 1 and the new concrete structure 2 in a bundling mode; the pressurized waterproof jacket 8 and the non-cured rubber asphalt 9 are arranged after the new concrete structure 2 is poured, and the non-cured rubber asphalt 9 in the pressurized waterproof jacket 8 is injected by an asphalt pump;
the pressurized waterproof cladding 8 and the non-cured rubber asphalt 9 are arranged after the new concrete structure 2 is poured, and the method comprises the following steps:
s1, drilling a fixing hole of a pressurized waterproof jacket 8: drilling expansion bolt holes on two sides of the exposed side of the joint of the old concrete structure 1 and the new concrete structure 2 by using a percussion drill, and installing expansion bolts;
s2, cleaning the operation surface of the anti-seepage structure: blowing the exposed side of the joint of the old concrete structure 1 and the new concrete structure 2 by using a high-pressure air gun, wherein the blowing width is larger than the width of the pressurized waterproof jacket 8;
s3, heating and drying the operation surface of the water seepage structure: blowing the exposed side of the joint of the old concrete structure 1 and the new concrete structure 2 by using a hot air gun, wherein the blowing width is greater than the width of the single side of the pressurized waterproof jacket 8 by 80mm;
s4, spraying or blade coating of the waterproof base layer: heating the non-cured rubber asphalt 9 to a liquid state, coating the non-cured rubber asphalt 9 on the exposed side of the joint of the old concrete structure 1 and the new concrete structure 2 by spraying or manual blade coating, wherein the coating width of the waterproof base layer is greater than the width of the pressurized waterproof jacket 8, and the single side is 80mm;
s5, installing, fixing and pressurizing a waterproof jacket 8: the pressurized waterproof jacket 8 is fixedly arranged on the exposed side of the joint of the old concrete structure 1 and the new concrete structure 2 through expansion bolts; the two ends of the pressurized waterproof jacket 8 are subjected to extension connection or plugging treatment according to the specific situation on site; when the two layers of aramid fiber cloth 10 are attached together, the width of the aramid fiber cloth 10 is more than 160mm, and the length of the aramid fiber cloth 10 attached to the surfaces of the old concrete structure 1 and the new concrete structure 2 is more than 80mm; the plugging treatment is to fix a plugging baffle plate 11 on the end part to be plugged of the pressurized waterproof jacket 8 through bolts or welding;
s6, electrifying and preheating: after the pressurized waterproof jacket 8 is fixed, connecting the binding post 8.8 with a heating power supply to keep the electric heating tube 8.3 at 120-150 ℃;
s7, pump injection of non-cured rubber asphalt 9:
s7, 1: removing all plugs 8.5 of the asphalt injection ports 8.2 on the pressurized waterproof jacket 8;
s7, 2: selecting an asphalt filling port 8.2 at the highest position, connecting the asphalt filling port with an asphalt pump through a hose, and pumping non-solidified rubber asphalt 9 into a pressurized waterproof jacket 8 through the asphalt pump;
s7, 3: observing the leakage condition of the non-solidified rubber asphalt 9 of all the asphalt injection ports 8.2 on the pressurized waterproof jacket 8, and when the leakage of the non-solidified rubber asphalt 9 appears at the asphalt injection ports 8.2, installing and screwing down the plugs 8.5 of the asphalt injection ports 8.2 until all the plugs 8.5 on the pressurized waterproof jacket 8 are installed and screwed down;
s7, 4: observing the leakage condition and position of the non-cured rubber asphalt 9 between the pressurized waterproof jacket 8 and the old concrete structure 1 and the new concrete structure 2, marking, and turning off an asphalt pump and a heating power supply;
s7, 5: and sealing all marked positions, namely coating non-cured rubber asphalt 9 and applying aramid fabric 10 to the marked positions, wherein the aramid fabric 10 is applied by two layers.
The pressurized waterproof jacket 8 and the anti-seepage structure of the non-cured rubber asphalt 9 pressurized and filled in the pressurized waterproof jacket have excellent self-repairing property, structural strength and cohesiveness, and are not only suitable for the waterproof structure at the junction of the new concrete structure and the old concrete structure of a newly constructed subway, but also suitable for repairing the seepage water at the junction of the new concrete structure and the old concrete structure of the existing subway engineering put into operation; after the subway engineering is put into use, the electric heating tube 8.3 of the pressurized waterproof jacket 8 can be electrified and heated to 45-50 ℃ periodically, so that the self-repairing process of the non-cured rubber asphalt 9 is accelerated.
The present invention is not described in detail in the prior art.
Claims (8)
1. A water seepage prevention structure at the junction of a metro Cheng Xin old concrete structure is characterized in that: a water stop steel plate (4) is arranged on the structure water facing side (3) at the joint of the old concrete structure (1) and the new concrete structure (2); a waterproof layer (5) is arranged at the joint of the water stop steel plate (4) and the water facing side (3) of the structure.
2. The seepage-proofing structure for the junction of the new concrete structure and the old concrete structure in the subway engineering as claimed in claim 1, wherein: an expansion water stop bar (6) and a grouting pipe (7) are fixedly arranged on the joint surface of the old concrete structure (1) and the new concrete structure (2).
3. The seepage-proofing structure for the junction of the new concrete structure and the old concrete structure in the subway engineering as claimed in claim 2, wherein: two expansion water stop bars (6) are arranged and penetrate through the joint surface of the old concrete structure (1) and the new concrete structure (2); the grouting pipes (7) are provided with a plurality of grouting pipes (7), and the grouting pipes (7) are fixedly arranged between the two expansion water stop bars (6).
4. The seepage-proofing structure for the junction of the new concrete structure and the old concrete structure in the subway engineering as claimed in claim 1, wherein: a pressurizing waterproof jacket (8) is fixedly arranged on the exposed side of the joint of the old concrete structure (1) and the new concrete structure (2); and a closed space is formed between the pressurized waterproof jacket (8) and the exposed side of the joint of the old concrete structure (1) and the new concrete structure (2), and non-cured rubber asphalt (9) is pressurized and filled in the closed space.
5. The seepage-proofing structure for the junction of the new concrete structure and the old concrete structure in the subway engineering as claimed in claim 4, wherein: the pressurized waterproof jacket (8) comprises a jacket body (8.1), the cross section of the jacket body (8.1) is in a trapezoid groove shape, and flange edges are arranged on two sides in a bending mode; an electric heating pipe (8.3) and a plurality of asphalt injection openings (8.2) are fixedly arranged on the inner side of the trapezoidal groove of the packaging shell (8.1), and plugs (8.5) are fixedly arranged on the outer end faces of the asphalt injection openings (8.2).
6. The seepage-proofing structure for the junction of the new concrete structure and the old concrete structure in the subway engineering as claimed in claim 5, wherein: a plurality of through holes are symmetrically arranged on the flange edges at the two sides of the packing shell (8.1), and a leakage-proof base plate (8.4) is fixedly arranged at the contact side of the flange edges and the concrete structure.
7. The seepage-proofing structure for the junction of the new concrete structure and the old concrete structure in the subway engineering as claimed in claim 5, wherein: a plurality of rivet nuts (8.6) are fixedly arranged on the inner side of the trapezoidal groove of the bag shell (8.1), electric heating tube fixing pieces (8.7) are fixedly arranged at the end parts of the rivet nuts (8.6) through bolts, and electric heating tubes (8.3) are fixedly arranged in the trapezoidal groove of the bag shell (8.1) through the electric heating tube fixing pieces (8.7); a binding post (8.8) is arranged on the outer side of the packaging shell (8.1), and the binding post (8.8) is electrically connected with the electric heating tube (8.3).
8. A construction process of the anti-seepage structure at the junction of the new concrete structure and the old concrete structure of the subway engineering as claimed in claim 6 or 7, characterized in that: the water stop steel plate (4) and the waterproof layer (5) are arranged before the old concrete structure (1) is poured; the contact sides of the water stop steel plates (4) and the old concrete structure (1) and the new concrete structure (2) are provided with a plurality of supporting steel bars in a welding mode, and the supporting steel bars are connected with steel bar cages in the old concrete structure (1) and the new concrete structure (2) through bundling; the pressurized waterproof jacket (8) and the non-cured rubber asphalt (9) are arranged after the new concrete structure (2) is poured, and the non-cured rubber asphalt (9) in the pressurized waterproof jacket (8) is injected by an asphalt pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210870271.7A CN115182389B (en) | 2022-07-20 | 2022-07-20 | Water seepage prevention structure at junction of new and old concrete structures of subway engineering and construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210870271.7A CN115182389B (en) | 2022-07-20 | 2022-07-20 | Water seepage prevention structure at junction of new and old concrete structures of subway engineering and construction process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115182389A true CN115182389A (en) | 2022-10-14 |
| CN115182389B CN115182389B (en) | 2024-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210870271.7A Active CN115182389B (en) | 2022-07-20 | 2022-07-20 | Water seepage prevention structure at junction of new and old concrete structures of subway engineering and construction process |
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| US20010008060A1 (en) * | 1999-10-18 | 2001-07-19 | Chia-Lung Lu | Process of waterproofing construction surface and slit of construction surface |
| CN101324073A (en) * | 2008-07-23 | 2008-12-17 | 西安理工大学 | Building method of floor fissure strata tunnel deformation joint anti-seepage structure and anti-seepage structure |
| CN106284425A (en) * | 2016-08-15 | 2017-01-04 | 中国二十二冶集团有限公司 | Basement in high rise building roof deformation seam water proof structure construction method |
| CN207597441U (en) * | 2017-11-30 | 2018-07-10 | 四川国恒建筑设计有限公司 | A kind of basement side wall horizontal construction joint water proof structure |
| CN109356201A (en) * | 2018-10-19 | 2019-02-19 | 中铁第四勘察设计院集团有限公司 | A kind of the interface waterproof construction and interface method for waterproofing of new-old concrete |
| CN109440951A (en) * | 2018-11-28 | 2019-03-08 | 山东汇通建设集团有限公司 | New-old concrete works intersection stitches waterproof construction and construction technology |
| CN210032149U (en) * | 2019-05-16 | 2020-02-07 | 衡水通达桥闸工程橡胶有限公司 | TDKF can dismantle stagnant water seam |
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2022
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| US20010008060A1 (en) * | 1999-10-18 | 2001-07-19 | Chia-Lung Lu | Process of waterproofing construction surface and slit of construction surface |
| CN101324073A (en) * | 2008-07-23 | 2008-12-17 | 西安理工大学 | Building method of floor fissure strata tunnel deformation joint anti-seepage structure and anti-seepage structure |
| CN106284425A (en) * | 2016-08-15 | 2017-01-04 | 中国二十二冶集团有限公司 | Basement in high rise building roof deformation seam water proof structure construction method |
| CN207597441U (en) * | 2017-11-30 | 2018-07-10 | 四川国恒建筑设计有限公司 | A kind of basement side wall horizontal construction joint water proof structure |
| CN109356201A (en) * | 2018-10-19 | 2019-02-19 | 中铁第四勘察设计院集团有限公司 | A kind of the interface waterproof construction and interface method for waterproofing of new-old concrete |
| CN109440951A (en) * | 2018-11-28 | 2019-03-08 | 山东汇通建设集团有限公司 | New-old concrete works intersection stitches waterproof construction and construction technology |
| CN210032149U (en) * | 2019-05-16 | 2020-02-07 | 衡水通达桥闸工程橡胶有限公司 | TDKF can dismantle stagnant water seam |
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| CN115182389B (en) | 2024-02-09 |
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