CN110541431A - waterproof structure of pipe gallery and construction method thereof - Google Patents
waterproof structure of pipe gallery and construction method thereof Download PDFInfo
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- CN110541431A CN110541431A CN201910785768.7A CN201910785768A CN110541431A CN 110541431 A CN110541431 A CN 110541431A CN 201910785768 A CN201910785768 A CN 201910785768A CN 110541431 A CN110541431 A CN 110541431A
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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
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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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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Abstract
The invention discloses a waterproof structure of a pipe gallery and a construction method thereof. According to the invention, a series of structures are arranged, so that the device can be used for preventing water from being applied to the wall, the top plate, the gap and the internal and external corners of the pipe gallery, and underground water is effectively prevented from extending into the pipe gallery.
Description
Technical Field
the invention relates to the field of building waterproofing, in particular to a pipe gallery waterproofing structure and a construction method thereof.
Background
a pipe corridor is an underground construction facility for laying pipes, and in modern cities the status of pipe corridors is of increasing importance. Because the piping lane is used in underground design, so in the use of piping lane, the condition of infiltration takes place for inevitable meeting appears, and in the work progress of piping lane, the inevitable connecting joint that can exist moreover, and the existence of connecting joint also can cause the infiltration of piping lane. And the piping lane infiltration not only can the life of piping lane, also can influence the life of piping lane internal pipeline.
disclosure of Invention
The invention aims to solve the technical problems and provides a pipe gallery waterproof structure and a construction method thereof.
the technical scheme of the invention is as follows: a waterproof structure of a pipe gallery and a construction method of the waterproof structure comprise a wall body, wherein a waterproof layer is arranged on the water facing surface of the wall body, a sleeve penetrates through the wall body, the sleeve penetrates through the waterproof layer, and the waterproof layer comprises a first waterproof layer, a second waterproof layer, a third waterproof layer, a fourth waterproof layer, a fifth waterproof layer and a sixth waterproof layer. The first waterproof layer comprises a cement mortar leveling layer with the thickness of 20mm, a coiled material waterproof layer, a cement mortar protective layer with the thickness of 20mm and backfill soil, and the first waterproof layer is connected with the outer wall of the pipe gallery. The second waterproof layer comprises a filtering layer with the thickness of 50mm, permeable geotextile with the thickness of 200Kg/m2, a drainage plate layer with the thickness of 20mm, a C20 fine-stone concrete protective layer with the thickness not less than 70mm, an isolating layer, a coiled material waterproof layer and a cement mortar leveling layer with the thickness of 20mm, and the second waterproof layer is connected with the top plate of the pipe gallery. The third water layer includes 20mm thick cement mortar screed-coat, coiled material waterproof layer, 20mm thick cement mortar protective layer and backfill soil, and the third water layer meets with the piping lane outer wall. The fourth waterproof layer comprises a filter layer of 50mm, a permeable geotextile of 200Kg/m2, a drainage plate layer of 20mm thickness, a C20 fine-stone concrete protective layer of which the thickness is not less than 70mm, an isolation layer, a coiled material waterproof layer and a cement mortar leveling layer of 20mm thickness, and the fourth waterproof layer is connected with the top plate of the pipe gallery. The fifth waterproof layer includes 50mm thick C20 pea gravel concrete protective layer, isolation layer, the thick water proof coating of 1.5mm, the thick waterproofing membrane of 1.5mm, the thick cement mortar screed-coat of 20mm, C20 concrete cushion, and the fifth waterproof layer is used for the piping lane external corner. The sixth waterproof layer is the same with fifth waterproof layer structure, and the sixth waterproof layer is used for the piping lane reentrant corner, and above-mentioned waterproof layer is all constructed according to above-mentioned order in proper order and is laid.
Preferably, when third waterproof layer and fourth waterproof layer use, the sleeve pipe is the rigidity, and the intraductal cable that has passed of cover, still is provided with the pitch that is used for the shutoff sheathed tube at the intraductal cover, and still is provided with additional coiled material waterproof layer between third waterproof layer and wall body still be provided with the waterproof guard circle between fourth waterproof layer and the sleeve pipe.
preferably, when the first waterproof layer and the second waterproof layer are used, the sleeve is a flexible sleeve.
A construction method of a waterproof structure of a pipe gallery comprises the following steps of bottom plate waterproof construction, side plate waterproof construction, top plate waterproof construction, deformation joint waterproof construction, construction joint waterproof construction, internal and external corner waterproof construction and wall penetrating pipe waterproof construction, wherein the bottom plate waterproof construction, the side plate waterproof construction and the top plate waterproof construction respectively comprise the following steps of firstly laying a leveling layer before construction, wherein the leveling layer is formed by mixing 1 part of cement and 2.5 parts of mortar, secondly laying a macromolecular waterproof coiled material with creep property and a macromolecular waterproof coating with creep property on the leveling layer, thirdly laying a protective layer on the creep layer, the deformation joint waterproof construction comprises the following steps of firstly installing a steel edge rubber water stop belt, secondly installing a deformation joint caulking plate and caulking by using a sealant, and the construction joint waterproof construction comprises the following steps of preparing before the first step of construction, the method comprises the steps of paving clean slurry, brushing a concrete interface treating agent, paving cement mortar and concrete, and installing a steel plate water stop.
preferably, during the waterproof construction of the bottom plate, the waterproof coiled material is paved on the leveling layer, the waterproof coating is coated on one side of the waterproof coiled material, which is far away from the leveling layer, and an isolating layer is also paved between the protective layer and the waterproof coating; during curb plate waterproof construction and roof waterproof construction, waterproof coating scribbles on the screed-coat, and waterproofing membrane spreads and pastes on waterproof coating, and in curb plate waterproof construction, the protective layer is solid brick guard wall, and its highly the same with the lateral wall height, in roof waterproof construction, the protective layer is the concrete protective layer, and also is provided with the isolation layer between concrete protective layer and waterproofing membrane.
Preferably, the thickness of the leveling layer is 20mm, the thickness of the waterproof coating is 1.5mm, and the thickness of the waterproof coiled material is 1.5 mm.
the invention has the beneficial effects that:
When the invention is used and constructed, the water seepage of the pipe gallery can be effectively prevented, and the pipelines in the pipe gallery are protected to a certain extent.
The invention can also block the gap during construction, and prevent underground water from entering the pipe gallery from the gap.
The invention can also be used for preventing water at the male and female corners of the pipe gallery. Thereby avoiding the groundwater from entering the pipe gallery through the internal and external corners.
drawings
FIG. 1 is a construction process diagram of the present invention.
fig. 2 is a waterproof construction flow chart of the cast-in-place bottom plate.
Fig. 3 is a flow chart of the waterproof construction of the cast-in-place side wall.
Fig. 4 is a waterproof construction flow chart of a cast-in-place roof.
fig. 5 shows one structure diagram of the flexible connection method of the embedded sleeve through the wall pipe.
fig. 6 shows one structure diagram of the flexible connection method of the embedded sleeve through the wall pipe.
fig. 7 shows one structure of the flexible connection through-wall pipe of the embedded sleeve.
figure 8 shows one of the construction diagrams of the flexible connection of the embedded sleeve to the wall pipe.
figure 9 shows one of the construction diagrams of the flexible connection of the embedded sleeve to the wall pipe.
Fig. 10 waterproof structure diagram of cast-in-place roof external corner.
Fig. 11 is a waterproof structure diagram of the cast-in-place roof internal corner.
Element number description: 1. a wallboard; 2. a sleeve; 3. a first waterproof layer; 4. a second waterproof layer; 5. a cable; 6. a third water layer; 7. asphalt; 8. adding a waterproof layer of coiled material; 9. a top plate; 10. a waterproof guard ring; 11. a fourth waterproof layer; 12. a fifth waterproof layer; 13. and a sixth waterproof layer.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
Referring to fig. 1-11, a construction method of a waterproof structure of a pipe gallery, the waterproof material is more in variety and material consumption, and an engineering department should accurately and timely propose a material consumption plan to ensure that materials are supplied according to the plan and meet the requirements of normal construction.
(1) The waterproof concrete and the waterproof mortar should meet the relevant regulations of 'quality acceptance criteria for underground waterproof engineering' GB 502082011. The erosion resistance requirement of the waterproof concrete is in accordance with the relevant regulations of the existing national standard of 'industrial building anti-corrosion design code' GB50046 and 'concrete junction durability design code' GB 50476;
(2) The variety, specification, performance and the like of waterproof materials used in underground waterproof engineering must meet the current national or industrial product standards and design requirements. The selected waterproof material has the advantages of environmental protection, economy, practicability, simple and convenient construction, better adaptability, capability of adapting to local weather and environmental conditions, simple protection of finished products and the like;
(3) The waterproof material and the matched material used in underground engineering are in accordance with the regulation of the existing industry standard JC1066 for the limit of harmful substances in the building waterproof coating, and the pollution to the surrounding environment is avoided;
(4) before the waterproof construction material enters a field, sampling inspection is carried out by a detection unit with corresponding qualification, and a quality certification file, a detection report and the like are checked. Unqualified products are forbidden to use, sampling rechecking is carried out under supervision evidence after materials enter the field, and the qualified products can be used;
(5) the waterproof materials should be transported in different categories during the transportation process, so as to avoid exposure to the sun, rain and dampness. Waterproofing membrane need prevent that the transportation from causing the damage, influencing water-proof effects. The stacking of the raw materials in the construction site is to be independently stacked in a classified and partitioned manner, a covering method is selected to cover the raw materials, the raw materials are prevented from being exposed to the sun, rain and the like, fire-fighting facilities are arranged in the stacking material places, inflammable materials are strictly prevented from being stacked nearby, and meanwhile, a specially-assigned person is arranged to take care of the fire-fighting facilities. Preparing materials;
(6) in order to prevent the waterproof coiled material from being damaged in the storage process, the operation teams and groups need to check the types, specifications, quantity and the like of various waterproof materials, and after the waterproof coiled material is taken, whether the appearance quality of the waterproof coiled material has defects of fracture, deformation, holes and the like is checked, and if the waterproof coiled material has problems, the waterproof coiled material needs to be replaced in time.
the cast-in-place bottom plate waterproof construction process comprises the following steps of (1) before a cushion layer is poured, removing silt and sundries on a foundation or foundation soil, watering and wetting the dry soil, and preventing accumulated water from remaining on the surface. And cleaning up sundries such as garbage, soil and the like in the supporting template, watering and wetting the template, and blocking plate seams and holes. Corresponding foundation waterproof and drainage measures are set before cleaning, watering and wetting;
(2) C20 fine stone concrete is used for pouring a 100mm thick cushion. Before the cushion concrete is poured, the part with the reinforcement requirement needs to be checked and accepted, and pouring can be carried out after the checking and acceptance is qualified; when the cushion layer is poured, the concrete is pushed to the other end from one end in parallel along the length direction of the construction section, and the concrete is vibrated along with pouring and is leveled along with scraping. In the pouring process, an inserted vibrator is used for vibrating to compact, a scraping rod is used for scraping, a trowel is used for troweling before the initial setting of concrete, secondary troweling and pressing and press polishing treatment are carried out before the final setting, the surface of the concrete is ensured to be flat, compact and crack-free, and the surface of a cushion layer cannot have clear water;
(3) the method comprises the following steps of 1: 2.5 the cement mortar is constructed and leveled into a cushion layer with the thickness of 20mm, the surface of the leveling layer is required to be compact, the defects of sanding, honeycomb, cracks and the like are avoided, the combination with the next layer is required to be firm, and the hollowing phenomenon is avoided. After the base surface meets the requirement of waterproof construction, the next construction can be carried out;
(4) Paving and pasting a macromolecular waterproof coiled material with the thickness of 1.5mm and the creep property, wherein the coiled material can be constructed by adopting a dry paving method; a reinforced waterproof layer with the width of 1mm needs to be paved and pasted at the construction joint of the bottom plate by using materials with the same specification, and reinforced waterproof layers with the width of 0.6m need to be additionally paved and pasted at the positive and negative corners by using materials with the same specification; when the waterproof coiled materials are laid, the adjacent coiled materials are staggered and laid, and no cross joint is formed; paying attention to the fact that the waterproof coiled material cannot be pulled too tightly or large bulges occur, and the laid waterproof coiled material keeps natural, smooth and close-fitting;
(5) After the coiled material is paved, the high-molecular waterproof coating with creep property is coated, and the high-molecular waterproof coating is coated or sprayed layer by layer without missing coating and uniform coating thickness. The width of the brushing joint is not less than 100 mm;
(6) After the waterproof coating is constructed and formed into a film, constructing a 10mm isolating layer by adopting low-grade cement mortar;
(7) and immediately pouring a 50mm fine-stone concrete protective layer after the isolation layer is constructed so as to protect the constructed waterproof layer.
The waterproof construction process of the cast-in-place side wall (1) adopts the following steps: 2.5, performing construction of a 20 mm-thick leveling layer on the top plate of the pipe gallery by using cement mortar to ensure that the base surface meets the requirement of waterproof construction;
(2) The macromolecular waterproof coating with the thickness of 1.5mm and the creep property is brushed or sprayed layer by layer, so that the coating is not missed and missed, and the thickness of the coating is uniform. The width of the brushing joint is not less than 100 mm;
(3) After the waterproof coating is constructed and formed into a film, a macromolecule waterproof coiled material with the thickness of 1.5mm and the creep property is adopted for paving a roof construction joint reinforcing layer, the coiled material is constructed by a full-adhesion method, the paving width is 1m, and a reinforcing waterproof layer with the width of 0.6m is additionally paved at the internal corner and the external corner;
(4) After the thin node waterproof reinforcing layer is laid and attached, a large-area waterproof coil layer is laid and attached;
(5) after the waterproof roll material layer is paved, low-grade cement mortar is adopted to carry out construction of a 10mm isolation layer;
(6) after the isolation layer is constructed, adopting a bonding device to perform flat seam bonding on the polymer drainage (storage) plate, wherein the polymer drainage (storage) plate cannot be fixed by adopting a shooting nail or an anchor bolt, the lap joint of the drainage (storage) plate and the matched self-adhesive geotextile thereof meets the design or specification requirement, and the top plate adopts root-puncture-resistant polymer drainage (storage) plate self-adhesive geotextile;
(7) When planting is carried out on the top plate without covering soil, a fine stone concrete protective layer with the thickness of 70mm is poured to protect the waterproof layer, and when planting is carried out on the top plate with covering soil, graded broken stones with the particle size of 1-2 cm are selected to carry out 50mm filter layer construction.
The waterproof construction process of cast-in-place roof, 1) adopts 1: 2.5, performing construction of a 20 mm-thick leveling layer on the top plate of the pipe gallery by using cement mortar to ensure that the base surface meets the requirement of waterproof construction;
(2) the macromolecular waterproof coating with the thickness of 1.5mm and the creep property is brushed or sprayed layer by layer, so that the coating is not missed and missed, and the thickness of the coating is uniform. The width of the brushing joint is not less than 100 mm;
(3) after the waterproof coating is constructed and formed into a film, a macromolecule waterproof coiled material with the thickness of 1.5mm and the creep property is adopted for paving a roof construction joint reinforcing layer, the coiled material is constructed by a full-adhesion method, the paving width is 1m, and a reinforcing waterproof layer with the width of 0.6m is additionally paved at the internal corner and the external corner;
(4) after the thin node waterproof reinforcing layer is laid and attached, a large-area waterproof coil layer is laid and attached;
(5) After the waterproof roll material layer is paved, low-grade cement mortar is adopted to carry out construction of a 10mm isolation layer;
(6) after the isolation layer construction is finished, adopt to glue the king to carry out the flush joint bonding to the polymer row (hold) board, must not adopt to penetrate nail or crab-bolt fixed, arrange (hold) board and the overlap joint of supporting self-adhesion geotechnological cloth and should accord with design or standard requirement, the roof should adopt root resistance puncture type polymer row (hold) board self-adhesion geotechnological cloth.
(7) When planting is carried out on the top plate without covering soil, a fine stone concrete protective layer with the thickness of 70mm is poured to protect the waterproof layer, and when planting is carried out on the top plate with covering soil, graded broken stones with the particle size of 1-2 cm are selected to carry out 50mm filter layer construction.
the waterproof construction of the cast-in-situ tie part structure comprises deformation joint waterproofing, construction joint waterproofing and internal and external corner waterproofing reinforcing layers.
The engineering main structure pipe gallery is all in the underground buried section, the deformation joint is internally filled with a buried steel edge rubber water stop, a polyethylene foam board and a single-component polysulfide sealant for joint filling to perform waterproof treatment, and the outer wall is treated by laying a reinforced layer waterproof coiled material. The water stop belts at the deformation joint parts of the bottom plate and the top plate adopt a basin-type mounting method, so that bubbles generated during vibration can be smoothly discharged. The construction process comprises the following steps that (1) concrete at the position of the externally-attached water stop belt at the deformation joint is vibrated fully, and the water stop belt is tightly and watertight in occlusion. The steel-edged rubber water stop should be accurately positioned, and the central line of the middle hollow ring and the deformation joint should coincide. During construction, a plugging end die can be manufactured according to the position of the water stop belt;
(2) the surface of the poured concrete is smooth, does not run out of the mould and does not leak slurry, and the baffle plate is smooth, smooth and firm;
(3) The installation and connection of the water stop should meet the following requirements:
firstly, the water stop should be fixedly installed, the fixed point needs to be firm and reliable, and the water stop is prevented from lodging and twisting due to falling off of concrete pouring and vibrating points, so that the water stop effect is influenced;
Secondly, a unilateral water stop belt fixing groove is formed in an aluminum template end plate used for construction of the main body structure of the engineering pipe gallery, opposite sides are fixed by fasteners in a shape like a Chinese character 'ji' at intervals of 50cm, and the tail ends of the fasteners are welded on main body reinforcing steel bars for fixing;
thirdly, the on-site butt joint of the water stop belt is butted by adopting hot vulcanization and cannot be arranged within 0.5m from two sides of a structure corner, and the number of joints is reduced as much as possible;
Fourthly, the thickness of concrete on any side of the water stop is not less than 15cm, the longitudinal center line of the water stop is aligned with the seam, and the distance error between the longitudinal center line and the seam is not more than 1 cm;
fifthly, the water stop belt is perpendicular to the surface of the joint, and the error is not more than 15 degrees; when pouring and vibrating the concrete at the water stop part, attention should be paid to the fact that the water stop is righted by hands while pouring. The template at the water stop position is accurate and firm in installation and positioning, so that the accuracy of water stop positioning is prevented from being influenced by die running, die expansion and the like;
sixthly, the concrete at the water stop part must be vibrated fully, so that the water stop is tightly meshed with the concrete, and the vibrating rod is strictly prohibited from touching the water stop during vibration.
(4) When the local part of the water stop belt can not be installed (if the stirrup can not pass through), the water stop belt is required to be adopted for transitional connection. The length of the lap joint of the water stop strip and the longitudinal axis direction of the water stop strip is not less than 50mm, the water stop strip needs to be adhered to the upstream side of the water stop strip, the adhesion needs to be firm and reliable, and the water stop strip needs to be fixed in a reserved groove on the surface of a construction joint.
(5) the steel-edged rubber water stop should be clamped in the middle of the template (upper layer and lower layer), and the clamp should be flat and solid to prevent slurry leakage.
(6) the dowel bar consists of an iron sleeve 2 with the length of phi 27 multiplied by 1.5@400 mm and the length of 22@400 mm and a dowel bar with the length of 800m, a deformation joint caulking plate is installed after a casting section end template is removed in construction, and the deformation joint caulking plate is made of a low-foaming polyethylene plastic plate.
(7) After the caulking plate is installed, the single-component polysulfide sealant is used for sealing joints, before the caulking, a liner plate with a certain depth in a deformation joint is removed according to the caulking depth required by design, the concrete surface on the inner surface of the joint is cleaned by a steel wire brush and high-pressure air, and the clean, dry, solid and free of impurities such as oil stain, dust, peeling, sand grains and the like on the surface of the concrete in the joint is ensured. No sundries are accumulated on the surface of the deformation joint gasket plate; the glue injection is continuous, full, uniform and dense, and is closely adhered to the concrete surfaces at two sides of the joint, and the phenomena of hollowing, air bubbles and separation from base layers at two sides are not generated at any part; the surface of the sealant is smooth and cannot protrude out of the surface of the joint concrete; after the caulking is finished and before the sealant is not cured, protection work should be done.
the waterproof construction process of the construction joint, (1) the construction joint is reserved and should satisfy the following requirements before waterproof treatment:
Firstly, a horizontal construction joint of the wall body is reserved on the wall body which is not less than 300mm higher than the surface of the bottom plate. The horizontal construction joint for combining the arch, the plate and the wall is preferably kept at a position 150-300 mm below the joint of the arch, the plate and the wall; the vertical construction joint should avoid the section with much groundwater and fracture water, and should be combined with the deformation joint.
Secondly, when concrete is continuously poured at the construction joint, the compressive strength of the poured concrete is not less than 1.2 MPa.
thirdly, before the horizontal construction joint is used for pouring concrete, the surface laitance and sundries are removed, then the neat paste is laid, the concrete interface treating agent or the cement-based permeable crystallization type waterproof coating is coated, and then 1: 1.25, cement mortar is poured, and concrete is poured in time; before concrete is poured into the vertical construction joint, the surface of the vertical construction joint is cleaned, then a concrete interface treating agent or a cement-based permeable crystallization type waterproof coating is coated, and the concrete is poured in time.
(2) The construction joint of the main structure of the pipe gallery adopts a middle-buried steel plate waterstop combined with a cement-based crystallized waterproof coating coated on the inner surface, and the outer side of the construction joint adopts a 1.5mm thick polymer bonding type coiled material for reinforcing waterproof treatment. Before concrete at the construction joint is poured, a roughening machine is adopted to roughen the surface of the construction joint. The inspection and acceptance standard and the method of the construction joint are specified in relevant regulations of quality inspection and acceptance Standard of underground waterproof engineering. The construction joint of the engineering site is reserved above the axillary angle of the bottom plate by 350 mm. When concrete pouring construction is carried out at stagnant water steel sheet position department, should strengthen this position department concrete vibration, ensure that this position department vibrates closely knit, should forbid touching stagnant water steel sheet during the vibrating rod operation, prevent to take place stagnant water steel sheet off normal.
(3) the construction joint adopts the steel plate waterstop to be waterproof, and after the installation of the structural steel bar of the first pouring section is finished, the steel plate waterstop is installed at the construction joint, and the buried waterstop and the externally-attached waterstop are accurate in buried position and firm in fixation. And spot-welding a phi 12 steel bar on the upper part and the lower part of the steel plate waterstop respectively and welding the phi 12 steel bar with the structural steel bar of the first pouring section at a distance of 1m to fix the steel plate waterstop. When the steel plate waterstop is buried underground, the position of the steel plate waterstop needs to be noticed, the steel plate waterstop of the horizontal construction joint is buried at the central line of the side wall, the width of the steel plate waterstop 1/2 is buried, and the flanging of the waterstop steel plate faces the upstream face. And additionally laying a waterproof coiled material reinforcing layer with the length of not less than 600mm on the outer surface of the construction joint. The connection of the steel plate water stop adopts double-sided full welding, and the lap joint length is not less than 50 mm.
(4) The cement-based crystalline waterproof coating base layer requires that:
Firstly, cleaning up construction joints before construction, removing loose layers and other foreign matters on the surfaces without oil stains, dust, gravels, dirt and the like, and roughening the surfaces;
Secondly, when cracks larger than 0.3mm appear on the base layer, 10cm of each crack is brushed with a waterproof reinforcing layer, and finally, a waterproof layer is brushed.
And thirdly, the concrete layer is fully wetted before construction, but no open water is available.
After the base layer is treated and the base layer is qualified through acceptance, the waterproof coating film reinforcing layer is coated, the thickness of the waterproof coating film reinforcing layer is increased, the construction of a large-surface coating waterproof layer is started after the reinforcing layer is constructed, the waterproof layer is coated by 2 times, and the coating directions of an upper coating layer and a lower coating layer are perpendicular to each other. When the coating is completely dried, the next coating construction can be carried out.
The construction of the waterproof reinforced layer of the internal and external corners is carried out, the internal and external corner waterproofing of the bottom (top) plate is made into a slope angle of 45 degrees, the waterproof layers are constructed according to the respective surfaces, after the paving and the pasting of the macromolecule waterproof self-adhesive coiled material with the thickness of 1.5mm and the creep property are finished, the paving and the pasting of the reinforced layer are carried out, the paving and the pasting width of each surface of the internal and external corners is not less than 300mm, and after the paving and the pasting are finished, the sealing paste is used for sealing the gap between the reinforced layer and the.
Waterproof construction process of sleeve 2 formula wall bushing: (1) before the construction of pouring side wall concrete, the embedded wall-penetrating steel pipe sleeve 2 is fixed at a design position, a water-stopping steel ring is welded on the sleeve 2 positioned at the half part of the wall thickness, and a hole is reserved at the corresponding position of the wall-penetrating pipe of the template.
(2) When concrete is poured, the concrete near the wall-penetrating steel pipe needs to be vibrated and compacted. And after the template is removed, constructing the waterproof coiled material and the waterproof coiled material reinforcing layer, and plugging the wall-penetrating steel pipe by using a gunny bag and the like to prevent foreign matters from entering.
(3) The outer wall part and the inner wall part of the through-wall pipe are easy to be triggered, and water leakage is caused by collision of waterproof measures, so that when earth is backfilled outside the wall, fillers around the through-wall pipe need to be manually tamped carefully, and the pre-buried pipe fitting cannot be punched or tamped.
(4) and after the sleeve 2 is plugged, an additional coiled material waterproof layer is constructed on the upstream surface, and the additional coiled material of the sleeve 2 at the top plate needs to be sealed and protected by cement mortar.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a piping lane waterproof construction, includes the wall body, its characterized in that: the water-proof layer is arranged on the water-facing surface of the wall body, the sleeve penetrates through the wall body and penetrates through the water-proof layer, and the water-proof layer comprises a first water-proof layer, a second water-proof layer, a third water-proof layer, a fourth water-proof layer, a fifth water-proof layer and a sixth water-proof layer,
the first waterproof layer comprises a cement mortar leveling layer with the thickness of 20mm, a coiled material waterproof layer, a cement mortar protective layer with the thickness of 20mm and backfill soil, the first waterproof layer is connected with the outer wall of the pipe gallery,
The second waterproof layer comprises a filtering layer with the thickness of 50mm, permeable geotextile with the thickness of 200kg/m2, a drainage plate layer with the thickness of 20mm, a C20 fine-stone concrete protective layer with the thickness of not less than 70mm, an isolating layer, a coiled material waterproof layer and a cement mortar leveling layer with the thickness of 20mm, the second waterproof layer is connected with the top plate of the pipe gallery,
the third water-proofing layer comprises a cement mortar leveling layer with the thickness of 20mm, a coiled material waterproof layer, a cement mortar protective layer with the thickness of 20mm and backfill soil, the third water-proofing layer is connected with the outer wall of the pipe gallery,
The fourth waterproof layer comprises a filtering layer with the thickness of 50mm, permeable geotextile with the thickness of 200kg/m2, a drainage plate layer with the thickness of 20mm, a C20 fine-stone concrete protective layer with the thickness of not less than 70mm, an isolating layer, a coiled material waterproof layer and a cement mortar leveling layer with the thickness of 20mm, the fourth waterproof layer is connected with the top plate of the pipe gallery,
The fifth waterproof layer comprises a 50mm thick C20 fine aggregate concrete protective layer, an isolation layer, 1.5mm thick waterproof paint, 1.5mm thick waterproof coiled materials, 20mm thick cement mortar leveling layers and a C20 concrete cushion layer, the fifth waterproof layer is used for the external corner of the pipe gallery,
The sixth waterproof layer has the same structure as the fifth waterproof layer, is used for the internal corner of the pipe gallery,
and the waterproof layers are sequentially constructed and laid according to the sequence.
2. a water-proof structure for pipe galleries according to claim 1, characterized in that: when third waterproof layer and fourth waterproof layer use, the sleeve pipe is the rigidity, and the intraductal cable that has passed of cover, still is provided with the pitch that is used for the shutoff sheathed tube at the intraductal cover, and still is provided with additional coiled material waterproof layer between third waterproof layer and wall body still be provided with the water protection circle between fourth waterproof layer and the sleeve pipe.
3. A water-proof structure for pipe galleries according to claim 1, characterized in that: when the first waterproof layer and the second waterproof layer are used, the sleeve is a flexible sleeve.
4. A construction method for the pipe gallery waterproof structure as claimed in claims 1-3, comprising bottom plate waterproof construction, side plate waterproof construction, top plate waterproof construction, deformation joint waterproof construction, construction joint waterproof construction, internal and external corner waterproof construction and wall penetrating pipe waterproof construction, characterized in that:
The bottom plate waterproof construction, the side plate waterproof construction and the top plate waterproof construction all comprise the following steps of firstly, paving a leveling layer before construction, wherein the leveling layer is formed by mixing 1 part of cement and 2.5 parts of mortar, secondly, paving a macromolecular waterproof coiled material with creep property and a macromolecular waterproof coating with creep property on the leveling layer, thirdly, paving a protective layer on the creep layer,
the deformation joint waterproof construction comprises the following steps of installing a steel edge rubber water stop belt in the first step, installing a deformation joint caulking plate in the second step and filling joints by using sealant,
The construction joint waterproof construction method comprises the following steps of preparing before construction in the first step, paving clean slurry, brushing a concrete interface treating agent, paving cement mortar and concrete, and installing a steel plate water stop in the second step.
5. The construction method of the waterproof structure of the pipe gallery according to claim 4, characterized in that: when the bottom plate is in waterproof construction, the waterproof coiled material is paved on the leveling layer, the waterproof coating is coated on one side of the waterproof coiled material, which is far away from the leveling layer, and an isolating layer is also paved between the protective layer and the waterproof coating; during curb plate waterproof construction and roof waterproof construction, waterproof coating scribbles on the screed-coat, and waterproofing membrane spreads and pastes on waterproof coating, and in curb plate waterproof construction, the protective layer is solid brick guard wall, and its highly the same with the lateral wall height, in roof waterproof construction, the protective layer is the concrete protective layer, and also is provided with the isolation layer between concrete protective layer and waterproofing membrane.
6. The construction method of the waterproof structure of the pipe gallery according to claim 5, characterized in that: the thickness of screed-coat is 20mm, waterproof coating's thickness is 1.5mm, waterproofing membrane's thickness is 1.5 mm.
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Application publication date: 20191206 |