CN113513048A - Station house underground passage leakage-proof structure and construction process - Google Patents
Station house underground passage leakage-proof structure and construction process Download PDFInfo
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- CN113513048A CN113513048A CN202110419417.1A CN202110419417A CN113513048A CN 113513048 A CN113513048 A CN 113513048A CN 202110419417 A CN202110419417 A CN 202110419417A CN 113513048 A CN113513048 A CN 113513048A
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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
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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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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Abstract
The anti-seepage structure for the station house underground passage comprises a cement crystal permeation type waterproof coating layer positioned between horizontal construction joints, a water swelling and water stopping adhesive layer used for sealing the horizontal construction joints, a galvanized steel plate water stopping belt perpendicular to the horizontal construction joints, and a water-facing surface facing the galvanized steel plate water stopping belt. The anti-leakage construction process of the underground passage of the house comprises the following steps: a cement crystal permeable waterproof coating layer arranged between the horizontal construction joints; the water-swelling water-stopping adhesive layer is used for sealing the horizontal construction joint; and a galvanized steel plate waterstop is arranged in the direction vertical to the horizontal construction joint. The technical scheme of the invention can ensure that the underground passage is not damaged due to water leakage, ensure the driving safety, avoid corroding the terminal equipment in the passage and prolong the service life of the structure; simple process, quick construction and installation, convenient replacement, good drainage effect and cost saving.
Description
Technical Field
The invention relates to a building ground seepage-proofing process, in particular to a station house underground passage seepage-proofing structure and a construction process.
Background
With the progress of high-speed rail construction in China, more and more high-speed rail station houses appear in the form of urban gates. The elevated station house adopting the 'house-bridge integrated' form provides convenient ticket buying, waiting and commercial space for passengers due to the integrity of the large space, and is one of the main forms of a newly-built high-speed rail station house. Meanwhile, in order to improve the construction land efficiency, underground passages and an overhead layer are built in various station rooms, the station rooms generally adopt a passenger flow form of 'going in from top to bottom', and the station rooms enter the ground from a station and go out from the underground passages below lines when going out of the station. The concrete construction of the underground passage belongs to mass concrete construction, temperature cracks and shrinkage cracks often occur in the construction, the structural integrity and durability of the underground passage are affected, and the requirement on the impermeability of the underground structure is high particularly in coastal cities with high underground water levels.
Disclosure of Invention
The invention aims to provide a station house underground passage leakage-proof structure and a construction process.
The seepage-proofing structure of the station building underground passage comprises a cement crystallization seepage-proofing coating layer positioned between horizontal construction joints, a water swelling and water stopping adhesive layer used for sealing the horizontal construction joints, and a galvanized steel plate water stopping belt perpendicular to the horizontal construction joints, wherein the galvanized steel plate water stopping belt faces to the upstream face and is used for preventing water from permeating inwards along the horizontal construction joints from the upstream face.
The invention relates to a leakage-proof structure of a station building underground passage, which further comprises a middle embedded type steel-edge water stop arranged in the annular side wall construction joint, an externally attached type water stop externally attached to the outer surface of the side wall, and an additional waterproof coiled material, wherein the middle embedded type steel-edge water stop is embedded in the side wall, and a rubber part in the middle of the middle embedded type steel-edge water stop is positioned in the annular side wall construction joint.
The station house underground passage leakage-proof structure also comprises a middle-buried steel edge water stop arranged in the deformation joint, an externally-attached water stop attached to the outer surface of the side wall, an additional waterproof coiled material and a seamless steel pipe with the inner diameter of 42 mm, wherein butter is injected into the seamless steel pipe, a shear rod is arranged in the seamless steel pipe and penetrates through the deformation joint, a medium-density polyethylene plate is arranged in the deformation joint, and a semicircular PVC drain pipe with the diameter of 50mm and a polysulfide two-component sealant for sealing are arranged on the inner side of the deformation joint.
The invention relates to an anti-leakage structure for an underground passage of a station building, wherein a through hole is formed in the middle of an externally-attached water stop, the position of the through hole corresponds to the extending direction of a deformation joint, a plurality of ribs arranged in parallel are arranged on the inner side of the externally-attached water stop, and an additional waterproof coiled material is paved on the outer side surface of the externally-attached water stop.
The invention relates to an anti-leakage construction process of an underground passage of a house, which comprises the following steps:
a cement crystal permeable waterproof coating layer arranged between the horizontal construction joints;
the water-swelling water-stopping adhesive layer is used for sealing the horizontal construction joint;
and a galvanized steel plate waterstop is arranged in the direction vertical to the horizontal construction joint, faces the upstream face, and is used for preventing water from permeating inwards along the horizontal construction joint from the upstream face.
The invention discloses a construction process for preventing leakage of an underground passage of a house, which comprises the following steps:
arranging the middle embedded steel-edge water stop in the annular side wall construction joint, embedding the middle embedded steel-edge water stop in the side wall, and arranging the rubber part at the middle part of the middle embedded steel-edge water stop in the annular side wall construction joint
And paving an externally-attached water stop and an additional waterproof coiled material on the outer surface of the side wall.
The invention discloses a construction process for preventing leakage of an underground passage of a house, which comprises the following steps:
a middle-buried steel edge water stop belt is arranged in the deformation joint;
paving an externally-attached water stop and an additional waterproof coiled material on the outer surface of the side wall;
arranging a seamless steel pipe with the inner diameter of 42 mm on one side of the deformation joint, injecting butter into the seamless steel pipe, arranging a shear rod in the seamless steel pipe, and enabling the shear rod to penetrate through the deformation joint to reach the other side of the deformation joint;
a medium density polyethylene sheet is arranged in the deformation joint;
a semicircular PVC drain pipe with the diameter of 50mm and a polysulfide two-component sealant for sealing are arranged on the inner side of the deformation joint.
The invention discloses a construction process for preventing leakage of an underground passage of a house, which comprises the following steps: the steel-edge water stop is welded on the structural steel bars, four edges of the galvanized steel sheet water stop are welded and connected through the binding surface, the longitudinal construction joint of the side wall faces to the backwater side, and the longitudinal center line of the rubber water stop is aligned with the joint.
The invention relates to a construction process for preventing leakage of an underground passage of a house, which further comprises the following steps:
base layer treatment: after the construction of the concrete cushion layer is finished, removing and cleaning the base layer protrusion before the construction, moistening the base layer in advance, paving cement mortar, leveling the vertical surface of the brick-built guide wall by adopting cement mortar with the weight ratio of 1:3, wherein the thickness of the leveling layer is 20 mm; all internal corners are made into obtuse angles of 5 x 5 cm by using cement mortar with the weight ratio of 1:3, and the external corners are made into rounded angles with the R being more than or equal to 5 cm.
The invention discloses an antiseep construction process for an underground passage of a house, wherein the construction of a cement crystallization permeable waterproof coating layer comprises the following steps: stirring the materials according to a water-cement ratio of 0.3:1 to form a paste, and performing brushing construction, wherein the dosage is 1.5-2.5 kilograms per square meter; the coating is uniformly stirred, and the stirred coating is used up within 30 min; brushing the coating with a brush, wherein the brushing construction is completed in two times, the time interval between the two brushing is 2-3 hours, the coating is brushed back and forth in the positive and negative directions, after the first brushing is completed, the coating is initially set, and then the second brushing construction can be performed; stirring the slurry used for the second brushing, wherein the slurry is slightly thinner than the slurry used for the first brushing, increasing the brushing fine density, checking whether poor construction positions such as missing coating, hollowing, powder rising and the like exist after the second brushing is finally solidified, if the poor construction positions exist, fully keeping a wet base surface to brush during the brushing construction, keeping the base surface wet, carrying out water spraying, moisturizing and maintenance within 6-8 hours after the construction, carrying out maintenance 2-3 times every day, maintaining once every other day, checking the original leakage condition of the back water surface after the coating is coated 15-20 days after the construction on the upstream surface is completed, if obvious cracks exist, carrying out leakage blocking treatment, chiseling a 3 cm-wide U-shaped groove with the depth of 2cm along the cracks, and filling the groove with a rapid-setting infiltration crystallization type waterproof material after flushing; if the crack is fine, blade-coating once by adopting a method of properly thickening the coating;
the additional waterproofing membrane shop pastes includes: paving a plane and then paving a vertical face of the coiled material, and building the coiled material at the stubble throwing position on the top surface of the guide wall by using bricks to prevent the coiled material from sliding off when the coiled material of the vertical face is paved;
after the floor waterproof layer is constructed to be qualified, a C20 fine-stone concrete protective layer with the thickness of 50mm is poured on the surface of the floor waterproof layer; after the construction of the waterproof layer of the vertical surface is qualified, an extruded polystyrene board with the thickness of 18mm outside is adopted for protection;
the steel-edged water stop is fixed on the structural steel bars in a welding manner, the fixing part is firm and reliable so as to prevent the water stop from shifting to influence the waterproof effect when concrete is poured and vibrated, meanwhile, the joint part of the water stop is not kept at the corner part, and when concrete on one side of a deformation joint is poured, in order to prevent the rubber water stop on the other side from being damaged, the baffle plate of the template is made into a box shape; the four edges of the binding surface of the galvanized steel plate waterstop are in full welding connection, and the dovetail faces to the back water side;
constructing the water-swelling water stop strip when meeting water: a groove is reserved on the surface of the construction joint, and the water-stopping glue is continuously, uniformly and fully extruded without bubbles and holes; after extrusion forming, temporary protection measures are taken in a curing period, and concrete cannot be poured before the water-stopping adhesive is cured; the water gel is closely adhered to the base surface of the construction joint, and the phenomena of hollowing, separation and the like cannot occur in the middle; the joint parts of the water-stopping adhesive are connected by adopting a butt joint method, the butt joint is tightly and closely matched, and the separated parts cannot be generated; when welding operation is carried out near the water stop glue, the water stop glue is covered and protected; and cutting off the water gel once the water gel has a damaged part or a part expanded in advance, and paving the water gel again at the cut-off part.
The technical scheme of the invention can ensure that the underground passage is not damaged due to water leakage, ensure the driving safety, avoid corroding the terminal equipment in the passage and prolong the service life of the structure; simple process, quick construction and installation, convenient replacement, good drainage effect and cost saving.
Drawings
FIG. 1 is a water-proof design drawing of a horizontal construction joint;
FIG. 2 is a view of a waterproof construction of a deformation joint of a base plate;
FIG. 3 is a waterproof construction diagram of a deformation joint of a side wall;
fig. 4 is a schematic view of a method for fixing an externally-attached water stop.
Detailed Description
As shown in fig. 1, 2, 3 and 4, the invention provides a seepage-proof structure for an underground passage of a station building, which comprises a cement crystal permeable waterproof coating layer positioned between horizontal construction joints, a water swelling and sealing adhesive layer used for sealing the horizontal construction joints, and a galvanized steel plate water stop belt perpendicular to the horizontal construction joints, wherein the galvanized steel plate water stop belt faces to the upstream surface and is used for preventing water from permeating inwards from the upstream surface along the horizontal construction joints.
The station building underground passage leakage-proof structure further comprises a middle embedded type steel-edge water stop arranged in the annular side wall construction joint, an outer attached type water stop attached to the outer surface of the side wall, and an additional waterproof coiled material, wherein the middle embedded type steel-edge water stop is embedded in the side wall, and a rubber part in the middle of the middle embedded type steel-edge water stop is positioned in the annular side wall construction joint.
The station house underground passage leakage-proof structure further comprises a middle-buried steel edge water stop arranged in the deformation joint, an outer-pasted water stop pasted on the outer surface of the side wall, an additional waterproof coiled material and a seamless steel pipe with the inner diameter of 42 mm, wherein butter is injected into the seamless steel pipe, a shear rod is arranged in the seamless steel pipe and penetrates through the deformation joint, a medium-density polyethylene plate is arranged in the deformation joint, and a semicircular PVC drain pipe with the diameter of 50mm and a polysulfide two-component sealant for sealing are arranged on the inner side of the deformation joint.
According to the station house underground passage anti-leakage structure, the through hole is formed in the middle of the externally-attached water stop belt, the position of the through hole corresponds to the extending direction of the deformation joint, the plurality of ribs which are arranged in parallel are arranged on the inner side of the externally-attached water stop belt, and the additional waterproof coiled material is paved on the outer side face of the externally-attached water stop belt.
The invention relates to an anti-leakage construction process of an underground passage of a house, which comprises the following steps:
a cement crystal permeable waterproof coating layer arranged between the horizontal construction joints;
the water-swelling water-stopping adhesive layer is used for sealing the horizontal construction joint;
and a galvanized steel plate waterstop is arranged in the direction vertical to the horizontal construction joint, faces the upstream face, and is used for preventing water from permeating inwards along the horizontal construction joint from the upstream face.
The invention discloses a construction process for preventing leakage of an underground passage of a house, which comprises the following steps:
arranging the middle embedded steel-edge water stop in the annular side wall construction joint, embedding the middle embedded steel-edge water stop in the side wall, and arranging the rubber part at the middle part of the middle embedded steel-edge water stop in the annular side wall construction joint
And paving an externally-attached water stop and an additional waterproof coiled material on the outer surface of the side wall.
The invention discloses a construction process for preventing leakage of an underground passage of a house, which comprises the following steps:
a middle-buried steel edge water stop belt is arranged in the deformation joint;
paving an externally-attached water stop and an additional waterproof coiled material on the outer surface of the side wall;
arranging a seamless steel pipe with the inner diameter of 42 mm on one side of the deformation joint, injecting butter into the seamless steel pipe, arranging a shear rod in the seamless steel pipe, and enabling the shear rod to penetrate through the deformation joint to reach the other side of the deformation joint;
a medium density polyethylene sheet is arranged in the deformation joint;
a semicircular PVC drain pipe with the diameter of 50mm and a polysulfide two-component sealant for sealing are arranged on the inner side of the deformation joint.
The invention discloses a construction process for preventing leakage of an underground passage of a house, which comprises the following steps: the steel-edge water stop is welded on the structural steel bars, four edges of the galvanized steel sheet water stop are welded and connected through the binding surface, the longitudinal construction joint of the side wall faces to the backwater side, and the longitudinal center line of the rubber water stop is aligned with the joint.
The invention relates to a construction process for preventing leakage of an underground passage of a house, which further comprises the following steps:
base layer treatment: after the construction of the concrete cushion layer is finished, removing and cleaning the base layer protrusion before the construction, moistening the base layer in advance, paving cement mortar, leveling the vertical surface of the brick-built guide wall by adopting cement mortar with the weight ratio of 1:3, wherein the thickness of the leveling layer is 20 mm; all internal corners are made into obtuse angles of 5 x 5 cm by using cement mortar with the weight ratio of 1:3, and the external corners are made into rounded angles with the R being more than or equal to 5 cm.
The invention discloses an antiseep construction process for an underground passage of a house, wherein the construction of a cement crystallization permeable waterproof coating layer comprises the following steps: stirring the materials according to a water-cement ratio of 0.3:1 to form a paste, and performing brushing construction, wherein the dosage is 1.5-2.5 kilograms per square meter; the coating is uniformly stirred, and the stirred coating is used up within 30 min; brushing the coating with a brush, wherein the brushing construction is completed in two times, the time interval between the two brushing is 2-3 hours, the coating is brushed back and forth in the positive and negative directions, after the first brushing is completed, the coating is initially set, and then the second brushing construction can be performed; stirring the slurry used for the second brushing, wherein the slurry is slightly thinner than the slurry used for the first brushing, increasing the brushing fine density, checking whether poor construction positions such as missing coating, hollowing, powder rising and the like exist after the second brushing is finally solidified, if the poor construction positions exist, fully keeping a wet base surface to brush during the brushing construction, keeping the base surface wet, carrying out water spraying, moisturizing and maintenance within 6-8 hours after the construction, carrying out maintenance 2-3 times every day, maintaining once every other day, checking the original leakage condition of the back water surface after the coating is coated 15-20 days after the construction on the upstream surface is completed, if obvious cracks exist, carrying out leakage blocking treatment, chiseling a 3 cm-wide U-shaped groove with the depth of 2cm along the cracks, and filling the groove with a rapid-setting infiltration crystallization type waterproof material after flushing; if the crack is fine, blade-coating once by adopting a method of properly thickening the coating;
the additional waterproofing membrane shop pastes includes: paving a plane and then paving a vertical face of the coiled material, and building the coiled material at the stubble throwing position on the top surface of the guide wall by using bricks to prevent the coiled material from sliding off when the coiled material of the vertical face is paved;
after the floor waterproof layer is constructed to be qualified, a C20 fine-stone concrete protective layer with the thickness of 50mm is poured on the surface of the floor waterproof layer; after the construction of the waterproof layer of the vertical surface is qualified, an extruded polystyrene board with the thickness of 18 outside is adopted for protection;
the steel-edged water stop is fixed on the structural steel bars in a welding manner, the fixing part is firm and reliable so as to prevent the water stop from shifting to influence the waterproof effect when concrete is poured and vibrated, meanwhile, the joint part of the water stop is not kept at the corner part, and when concrete on one side of a deformation joint is poured, in order to prevent the rubber water stop on the other side from being damaged, the baffle plate of the template is made into a box shape; the four edges of the binding surface of the galvanized steel plate waterstop are in full welding connection, and the dovetail faces to the back water side;
constructing the water-swelling water stop strip when meeting water: a groove is reserved on the surface of the construction joint, and the water-stopping glue is continuously, uniformly and fully extruded without bubbles and holes; after extrusion forming, temporary protection measures are taken in a curing period, and concrete cannot be poured before the water-stopping adhesive is cured; the water gel is closely adhered to the base surface of the construction joint, and the phenomena of hollowing, separation and the like cannot occur in the middle; the joint parts of the water-stopping adhesive are connected by adopting a butt joint method, the butt joint is tightly and closely matched, and the separated parts cannot be generated; when welding operation is carried out near the water stop glue, the water stop glue is covered and protected; and cutting off the water gel once the water gel has a damaged part or a part expanded in advance, and paving the water gel again at the cut-off part.
The anti-leakage structure for preventing the underground passage of the station house and the construction process mainly comprise joint position treatment such as a concrete structure deformation joint and a construction joint, and a circular drainage pipe, a transverse drainage pipe and a side type blind ditch in the structure, wherein the whole drainage path is external water → the circular drainage pipe (the transverse drainage pipe) → the side type blind ditch → a collecting header pipe → a water collecting well. The anti-seepage structure for preventing the station house underground passage and the construction process are suitable for station houses in high water level areas, coastal urban areas and areas with abundant underground water.
The whole waterproof construction process comprises the following steps: construction preparation → surface treatment of cushion layer → (2mm cement crystal permeable waterproof coating → additional layer → 3mm self-adhesive polymer modified asphalt waterproof coiled material → waterproof protective layer of bottom plate) → construction of waterproof concrete structure of bottom plate → construction of reinforcing steel bar of side wall and top plate → installation of water stop strip and construction joint water stop strip → ring of deformation joint, installation of longitudinal drainage blind pipe → pouring of waterproof concrete → (2mm cement crystal permeable waterproof coating of side wall and top plate → additional layer of side wall and top plate → 3mm self-adhesive polymer modified asphalt waterproof coiled material of side wall and top plate → waterproof protective layer of side wall and top plate) → construction of inner side drainage blind ditch and filling layer of channel
The treatment mode of each seam:
horizontal construction joint: the galvanized steel sheet waterstop, the cement crystallization permeable waterproof coating and the water swelling waterstop glue are compounded to stop water;
circumferential side wall construction joint: a middle-buried steel-edged water stop, an externally-attached water stop and an additional waterproof coiled material;
deformation joint: a phi 50 semicircular PVC drain pipe and a polysulfide two-component sealant are arranged at the inner side of the embedded steel-edge water stop, the externally-attached water stop, the additional waterproof coiled material and a phi 42 (inner diameter) seamless steel pipe;
wherein: the deformation joint is arranged at two shear rods in the whole circumferential direction during structure construction, wherein a phi 42 (inner diameter) seamless steel pipe is embedded in one side of the deformation joint, the shear rods are made of phi 40mm smooth steel bars, the length is 1m, the distance is 400mm, grease is injected into the phi 42 (inner diameter) seamless steel pipe in the other side of the deformation joint, and a 20mm gap is reserved between the pipe end and the shear rods and used for transferring shear force and reducing deformation.
A drainage path: external water → circumferential drain pipe (lateral drain pipe) → lateral blind drain → collection header pipe → sump well automatic pump drainage.
The good drainage effect of drainage system that blind pipe, side formula blind ditch and collection house steward are constituteed, and horizontal blind ditch and collection house steward adopt phi 100pvc pipe, the pipe shaft is opened 10mm @60mm round hole, the plum blossom is arranged, and wrap up two-layerly with geotechnological cloth, vertical blind pipe adopts phi 50pvc pipe, cut into the semicircle, set up in movement joint and construction joint position department, and seal with the sealant, horizontal blind ditch sets up in the passageway filling layer, interval 6m, do well simultaneously and indulge horizontal blind pipe connection and lead to the water test, guarantee that the underpass does not have the seepage, guarantee intraductal no jam simultaneously.
Base layer treatment: after the concrete cushion layer construction is completed, the base layer bulges are shoveled and cleaned up before construction, the base layer is fully wetted in advance, and then cement paste is paved. And leveling the vertical surface of the brick-built guide wall by adopting 1:3 cement mortar, wherein the thickness of the leveling layer is 20 mm. All internal corners are made into obtuse angles of 5 multiplied by 5 cm by 3 cement mortar, and all external corners are made into rounded angles with R being more than or equal to 5 cm.
Cement crystal permeable waterproof coating: the materials are brushed and constructed by adding 1 part of water into 3 parts of materials according to a water-cement ratio (weight ratio) of 0.3:1, namely stirring the materials into a pasty state, wherein the general dosage is 1.5 kg per square meter, and the dosage is required at a special position as follows: and 1.8 to 2.5 kilograms per square meter. The paint is stirred fully and uniformly, small ash balls cannot exist, the amount of the paint is used, and the stirred paint is used up within 30 minutes. The common construction method of the coating can be used for brushing with a brush, the brushing construction is completed in two times, the time interval of brushing for two times is 2-3 hours, the coating is brushed back and forth in the positive and negative directions, and after the brushing for the first time is completed, the coating is initially set (in a hand-dry state), and then the brushing construction for the second time can be performed. The second pass may be carried out with a slurry which is stirred slightly less finely than the slurry used in the first pass, but the fineness of the pass must be increased.
And after the second painting final setting, checking whether bad construction positions such as missing painting, hollowing, powder rising and the like exist, and if so, timely repairing. During painting construction, the painting can be carried out until the wet base surface is kept sufficiently, so that the base surface is kept wet. The product has unique moisturizing effect, and is subjected to water spraying moisturizing maintenance within 6-8 hours after construction, 2-3 times per day and once again every other day (the maintenance moisturizing cannot be realized by water storage maintenance).
And (5) after 15-20 days after the construction of the coating on the upstream surface is finished, checking the original leakage condition of the backside surface. If the crack is obvious, performing leak stopping treatment, chiseling a U-shaped groove with the width of 3cm and the depth of 2cm along the crack, flushing and then filling the groove with a rapid-hardening and permeable crystallization type waterproof material; if the crack is fine, the product is blade-coated once by adopting a method of properly thickening the coating.
Paving and sticking coiled materials: the coiled material should be laid on the plane first and then on the vertical surface. When the vertical face coiled material is laid, the coiled material at the stubble throwing position is laid on the top surface of the guide wall by bricks to prevent the coiled material from sliding off.
Construction of a protective layer: after the floor waterproof layer is constructed to be qualified, a C20 fine-stone concrete protective layer with the thickness of 50mm is poured on the surface of the floor waterproof layer; and after the construction of the vertical waterproof layer is qualified, an extruded polystyrene board with the thickness of 18mm is adopted for protection.
Construction of a joint:
(1) the steel-edged water stop is welded and fixed on the structural steel bars, and the fixing part is firm and reliable, so that the water stop is prevented from shifting to influence the waterproof effect when concrete is poured and vibrated. Meanwhile, the joint part of the water stop belt cannot be kept at the corner part, and when concrete on one side of the deformation joint is poured, in order to prevent the rubber water stop belt on the other side from being damaged, the baffle plate of the template is made into a box shape.
(2) The four sides of the binding surface of the galvanized steel plate water stop are fully welded and connected, and the dovetail orientation is required: the longitudinal construction joints of the side walls face the backwater side.
(3) And (5) externally pasting a rubber waterstop for construction.
1) The longitudinal center line of the water stop belt should be aligned with the seam, and the error should not be larger than 10 mm.
2) After the water stop is installed, the positions such as raised edges and overlarge hollows cannot occur, so that the water stop is prevented from being excessively distorted and displaced when concrete is poured.
3) The surface of the waterstop is strictly forbidden to be used as a concrete protective layer, the meshing of the waterstop rack and the cast-in-place concrete of the structure is ensured to be compact, when the concrete is poured, the surface of the waterstop arranged on the plane cannot be polluted by mud, accumulated sundries and the like, and otherwise, the waterstop must be cleaned up. So as to avoid influencing the engaging compactness of the water stop and the cast-in-place concrete.
(4) Construction of water-swelling sealing strip
1) The surface of the construction joint is provided with a groove, and the surface is solid and relatively flat without honeycomb, sand and other parts.
2) The thickness of the concrete on any side of the waterproof glue is not less than 50 mm.
3) The extrusion of the water stop glue is continuous, uniform, full and free of bubbles and holes.
4) After extrusion molding, temporary protection measures should be taken in the curing period, and concrete should not be poured before the water-stop glue is cured.
5) The water gel should be closely adhered to the base surface of the construction joint, and the phenomena of hollowing, separation and the like cannot occur in the middle.
6) The joint parts of the water-stop glue are connected by adopting a butt joint method, the butt joint is compact, and the separated parts cannot be generated.
7) When welding operation is performed near the waterproof adhesive, the waterproof adhesive should be covered and protected.
8) Once the water gel has a damaged part or a part expanded in advance, the water gel is cut off, and the water gel is laid on the cut-off part again.
The technical scheme of the invention has the advantages that:
the novel water-proof and drainage technology is applied by combining sectional drainage, regional collection, seam pressure reduction and side ditch seepage-proof drainage according to the combination of 'prevention, drainage, interception and blockage, rigid-flexible coordination and comprehensive treatment' on the basis of the traditional water-proof and drainage technology (based on design);
after the vertical and horizontal drainage blind pipes are used, compared with the traditional construction, the seepage-proofing performance can be greatly improved, the water pressure on two sides is reduced, the water seepage phenomenon of a concrete structure is greatly reduced, the former seepage regulation phenomenon is fundamentally changed, the seepage-proofing quality of an underground passage is greatly improved, the soil pressure is kept balanced, and the settlement is reduced;
the underground passage can be ensured not to cause diseases caused by water leakage, the driving safety is ensured, the corrosion of the tail end equipment in the passage is avoided, and the service life of the structure is prolonged;
simple process, quick construction and installation, convenient replacement, good drainage effect and cost saving.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a station room underpass leak protection structure, its characterized in that, including the cement crystallization permeation type waterproof coating layer that is located between the horizontal construction joint with be used for sealing the water swelling stagnant water glue film of meeting of horizontal construction joint still includes with horizontal construction joint vertically galvanized steel sheet waterstop, galvanized steel sheet waterstop is towards the upstream face for prevent that water from being followed horizontal construction joint by the upstream face and inwards permeating.
2. The leakage prevention structure for the underground passage of the station building according to claim 1, further comprising a middle-buried steel-edge water stop arranged in the circumferential side wall construction joint, an externally-attached water stop attached to the outer surface of the side wall, and an additional waterproof coiled material, wherein the middle-buried steel-edge water stop is buried in the side wall, and the rubber part in the middle of the middle-buried steel-edge water stop is located in the circumferential side wall construction joint.
3. The station building underground passage leakage-proof structure of claim 2, characterized in that still includes buried steel edge waterstop and outer attached type waterstop and additional waterproofing coiled material attached to the outer surface of the side wall in the deformation joint, and also includes seamless steel pipe with inner diameter of 42 mm, grease is injected into the seamless steel pipe, set up the shear rod in the seamless steel pipe, the shear rod passes the deformation joint, sets up medium density polyethylene board in the deformation joint, and the deformation joint inboard sets up semicircle PVC drain pipe of diameter 50mm and sealed polysulfide two-component sealant of usefulness.
4. The leakage-proof structure for the underground passage of the station house according to claim 3, wherein a through hole is formed in the middle of the externally attached water stop, the through hole is located in a position corresponding to the extending direction of the deformation joint, a plurality of ribs arranged in parallel are arranged on the inner side of the externally attached water stop, and an additional waterproof coiled material is paved on the outer side surface of the externally attached water stop.
5. The anti-leakage construction process of the underground passage of the house is characterized by comprising the following steps of:
a cement crystal permeable waterproof coating layer arranged between the horizontal construction joints;
the water-swelling water-stopping adhesive layer is used for sealing the horizontal construction joint;
and a galvanized steel plate waterstop is arranged in the direction vertical to the horizontal construction joint, faces the upstream face, and is used for preventing water from permeating inwards along the horizontal construction joint from the upstream face.
6. The antiseep construction process of underground passage of house of claim 5, comprising:
arranging the middle embedded steel-edge water stop in the annular side wall construction joint, embedding the middle embedded steel-edge water stop in the side wall, and arranging the rubber part at the middle part of the middle embedded steel-edge water stop in the annular side wall construction joint
And paving an externally-attached water stop and an additional waterproof coiled material on the outer surface of the side wall.
7. The antiseep construction process of underground passage of house of claim 6, comprising:
a middle-buried steel edge water stop belt is arranged in the deformation joint;
paving an externally-attached water stop and an additional waterproof coiled material on the outer surface of the side wall;
a seamless steel pipe with the inner diameter of 42 mm is arranged at one side of the deformation joint, grease is injected into the seamless steel pipe,
a shear rod is arranged in the seamless steel pipe and penetrates through the deformation joint to reach the other side of the deformation joint;
a medium density polyethylene sheet is arranged in the deformation joint;
a semicircular PVC drain pipe with the diameter of 50mm and a polysulfide two-component sealant for sealing are arranged on the inner side of the deformation joint.
8. The antiseep construction process of underground passage of house of claim 7, comprising: the steel-edge water stop is welded on the structural steel bars, four edges of the galvanized steel sheet water stop are welded and connected through the binding surface, the longitudinal construction joint of the side wall faces to the backwater side, and the longitudinal center line of the rubber water stop is aligned with the joint.
9. The antiseep construction process of underground passage of house of claim 8, further comprising:
base layer treatment: after the construction of the concrete cushion layer is finished, removing and cleaning the base layer protrusion before the construction, moistening the base layer in advance, paving cement mortar, leveling the vertical surface of the brick-built guide wall by adopting cement mortar with the weight ratio of 1:3, wherein the thickness of the leveling layer is 20 mm; all internal corners are made into obtuse angles of 5 x 5 cm by using cement mortar with the weight ratio of 1:3, and the external corners are made into rounded angles with the R being more than or equal to 5 cm.
10. The antiseep construction process of the underground passageway of the house of claim 9,
the construction of the cement crystallization permeable waterproof coating layer comprises the following steps: stirring the materials according to a water-cement ratio of 0.3:1 to form a paste, and performing brushing construction, wherein the dosage is 1.5-2.5 kilograms per square meter; the coating is uniformly stirred, and the stirred coating is used up within 30 min; brushing the coating with a brush, wherein the brushing construction is completed in two times, the time interval between the two brushing is 2-3 hours, the coating is brushed back and forth in the positive and negative directions, after the first brushing is completed, the coating is initially set, and then the second brushing construction can be performed; stirring the slurry used for the second brushing, wherein the slurry is slightly thinner than the slurry used for the first brushing, increasing the brushing fine density, checking whether poor construction positions such as missing coating, hollowing, powder rising and the like exist after the second brushing is finally solidified, if the poor construction positions exist, fully keeping a wet base surface to brush during the brushing construction, keeping the base surface wet, carrying out water spraying, moisturizing and maintenance within 6-8 hours after the construction, carrying out maintenance 2-3 times every day, maintaining once every other day, checking the original leakage condition of the back water surface after the coating is coated 15-20 days after the construction on the upstream surface is completed, if obvious cracks exist, carrying out leakage blocking treatment, chiseling a 3 cm-wide U-shaped groove with the depth of 2cm along the cracks, and filling the groove with a rapid-setting infiltration crystallization type waterproof material after flushing; if the crack is fine, blade-coating once by adopting a method of properly thickening the coating;
the additional waterproofing membrane shop pastes includes: paving a plane and then paving a vertical face of the coiled material, and building the coiled material at the stubble throwing position on the top surface of the guide wall by using bricks to prevent the coiled material from sliding off when the coiled material of the vertical face is paved;
after the floor waterproof layer is constructed to be qualified, a C20 fine-stone concrete protective layer with the thickness of 50mm is poured on the surface of the floor waterproof layer; after the construction of the waterproof layer of the vertical surface is qualified, an extruded polystyrene board with the thickness of 18mm outside is adopted for protection;
the steel-edged water stop is fixed on the structural steel bars in a welding manner, the fixing part is firm and reliable so as to prevent the water stop from shifting to influence the waterproof effect when concrete is poured and vibrated, meanwhile, the joint part of the water stop is not kept at the corner part, and when concrete on one side of a deformation joint is poured, in order to prevent the rubber water stop on the other side from being damaged, the baffle plate of the template is made into a box shape; the four edges of the binding surface of the galvanized steel plate waterstop are in full welding connection, and the dovetail faces to the back water side;
constructing the water-swelling water stop strip when meeting water: a groove is reserved on the surface of the construction joint, and the water-stopping glue is continuously, uniformly and fully extruded without bubbles and holes; after extrusion forming, temporary protection measures are taken in a curing period, and concrete cannot be poured before the water-stopping adhesive is cured; the water gel is closely adhered to the base surface of the construction joint, and the phenomena of hollowing, separation and the like cannot occur in the middle; the joint parts of the water-stopping adhesive are connected by adopting a butt joint method, the butt joint is tightly and closely matched, and the separated parts cannot be generated; when welding operation is carried out near the water stop glue, the water stop glue is covered and protected; and cutting off the water gel once the water gel has a damaged part or a part expanded in advance, and paving the water gel again at the cut-off part.
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| CN202110419417.1A CN113513048A (en) | 2021-04-19 | 2021-04-19 | Station house underground passage leakage-proof structure and construction process |
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