CN115538708A - Construction method for reinforced soil-fixing grid of large-gradient planting inclined roof - Google Patents
Construction method for reinforced soil-fixing grid of large-gradient planting inclined roof Download PDFInfo
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- CN115538708A CN115538708A CN202211210966.9A CN202211210966A CN115538708A CN 115538708 A CN115538708 A CN 115538708A CN 202211210966 A CN202211210966 A CN 202211210966A CN 115538708 A CN115538708 A CN 115538708A
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
- E04D11/002—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings consisting of two or more layers, at least one of the layers permitting turfing of the roof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
- E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/0404—Drainage on the roof surface
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/0404—Drainage on the roof surface
- E04D13/0477—Underroof drainage layers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/254—Roof garden systems; Roof coverings with high solar reflectance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/32—Roof garden systems
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to the technical field of building construction, in particular to a construction method of a reinforced soil-fixing grid for a large-gradient planted sloping roof. The construction method of the reinforced soil-fixing grid for the large-gradient planted inclined roof is characterized in that a fine aggregate concrete waterproof protective layer, a cross anti-collapse drainage plate, a geotextile filter layer and a honeycomb soil-fixing grid with set thickness are sequentially laid above a roof waterproof layer from bottom to top, and then light planting soil is backfilled in the honeycomb soil-fixing grid; a plurality of L-shaped steel bars are embedded in the fine aggregate concrete waterproof protective layer, and the L-shaped steel bars partially extend out of the fine aggregate concrete waterproof protective layer; the cross anti-collapse drainage plate and the geotextile filter layer are sequentially arranged in the vertical section of the L-shaped steel bar in a penetrating manner; tensioning the honeycomb soil fixing grids into a rhombic state in each grid area, and fixing the honeycomb soil fixing grids on the vertical sections of the L-shaped steel bars; when the light planting soil is backfilled, the elevation is controlled to be higher than the honeycomb soil fixing grids, and the vertical section of the L-shaped steel bar is covered. The construction method can ensure the stability of the soil body on the large-gradient planted roof, and has simple construction process and low cost.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a reinforced soil-fixing grid for a large-gradient planted sloping roof.
Background
Along with the development of cities, the ground space of the cities is increasingly tense, the land resource is 'earth-inch gold', the demand of people on planting land is increasingly highlighted, and the contradiction between building land and planting land is increasingly prominent. In order to solve the problem of urban planting land, a planted roof begins to appear in a building. The planting roof is supported by the top plane of a building, for the large-gradient planting roof, the construction process is complex, the construction requirement is high, the shape of the roof is gradually increased from bottom to top, when planting soil is directly backfilled on the large-gradient planting roof, the planting soil can be settled due to time, rainwater soaking, building vibration and the like, soil body loss is caused, the quality and the expected effect are difficult to ensure, once the soil body is settled due to various reasons, the overall effect of the roof is influenced, rework is caused, and the rework cost is not small. Aiming at the planting roof with a large gradient, the problem which needs to be solved urgently is formed by how to ensure the stability of the soil body, the construction progress and the construction benefit.
Disclosure of Invention
In view of the above, the invention aims to provide a construction method for a reinforced soil-fixing grid of a large-gradient planted inclined roof, which ensures the stability of a soil body on the large-gradient planted roof, improves the construction progress and ensures the construction benefit.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a construction method for a large-gradient planting inclined roof reinforcement and soil consolidation grid is characterized in that a fine aggregate concrete waterproof protective layer, a cross anti-collapse drainage plate, a geotextile filter layer and a honeycomb soil consolidation grid with set thickness are sequentially laid above a roof waterproof layer from bottom to top, and then light planting soil is backfilled in the honeycomb soil consolidation grid;
a plurality of L-shaped steel bars are embedded in the fine aggregate concrete waterproof protective layer, the straight sections of the L-shaped steel bars are positioned in the fine aggregate concrete waterproof protective layer, and the vertical sections of the L-shaped steel bars extend out of the fine aggregate concrete waterproof protective layer;
the cross anti-collapse drainage plate and the geotextile filter layer are sequentially arranged on the vertical section of the L-shaped reinforcing steel bar in a penetrating manner;
the honeycomb soil fixing grids are stretched into a rhombic state in each grid area and are fixed on the vertical sections of the L-shaped reinforcing steel bars, and the vertical sections of the L-shaped reinforcing steel bars are positioned at the peripheral corners of the corresponding rhombic grid areas stretched by the honeycomb soil fixing grids;
and when the light planting soil is backfilled, controlling the elevation to be higher than the honeycomb soil fixing grids and covering the vertical section of the L-shaped steel bar.
Furthermore, the fine aggregate concrete waterproof protective layer is formed by pouring C25 concrete and internally provided with bidirectional reinforcing steel bars; the method comprises the steps of typesetting the L-shaped steel bars before pouring, controlling the position, pouring and embedding the L-shaped steel bars according to the blanking in advance and the typesetting in the pouring process, wherein the L-shaped steel bars are arranged in a quincunx shape.
Furthermore, the cross anti-collapse drainage plate adopts a concave-convex plastic drainage plate, before the cross anti-collapse drainage plate is installed, garbage on the fine stone concrete waterproof protective layer is cleaned, mortar is used for leveling, no obvious height difference is ensured, the concave-convex plastic drainage plate is laid, and the flatness of the drainage plate is well controlled; setting a straight section within a distance range in the length direction, wherein the straight section is connected with the concave-convex hollow vertical ribs by a hot melting method without concave-convex hollow vertical ribs; concave-convex hollow studs are arranged in the width direction, and after the glue is coated, the hollow studs are overlapped and then compacted.
Furthermore, when the geotextile filter layer is laid, a natural lap joint mode is adopted, the seam needs to be intersected with a slope surface line, the distance between the seam and a slope toe is balanced or a place where stress possibly exists, and the distance between the horizontal seam needs to be larger than a set parameter; on the slope surface, carrying out staggered cycle on the first feeding of the upper industrial fabric, and then putting down the upper industrial fabric along the city surface to ensure that the upper industrial fabric keeps a tensioned state; all geotextiles must be held down by a sand pot that will be used during the course of laying and will remain on top of the layer of material.
Furthermore, when the geotextile is laid, the size of the geotextile needs to be determined according to the field condition, and the geotextile is cut and then is tried to be laid; after the size is determined, the lap joint parts of the two geotextiles are connected by wind-holding inspection, and the cutting-edge time cutting-edge line of the lap joint parts is straight and straight, and the stitches are uniform.
Furthermore, before the roof waterproof layer is constructed, a cement mortar leveling layer, a heat insulation layer, a fine aggregate concrete leveling layer and a waterproof layer are sequentially constructed.
Furthermore, the heat-insulating layer adopts an extruded polystyrene board, the extruded polystyrene board adopts a full-adhesion method, the bottom surface of the extruded polystyrene board is directly adhered to the roof base layer after being dipped in the boiled asphalt, and is fixed by expansion bolts; paving from one direction to the other direction during paving, and reserving expansion joints of 1-2cm when the extruded polystyrene board is adhered at the positions of the rigid components protruding from the parapet, the gutter and the roof; and paving in a staggered joint arrangement mode, wherein the length of the staggered joint is 1/2 of the length of the standard plate.
Furthermore, when the waterproof layer is constructed, the internal and external corners are made into circular arc shapes, and the minimum radius of the internal corner is larger than that of the external corner; after the wall-penetrating pipe root is positioned, the periphery of the floor slab is tightly blocked by cement waterproof mortar, a groove is reserved between the pipe root and concrete and is used for embedding and filling sealing paste or waterproof mortar, and the part, connected with the ground, of the periphery of the pipe root is plastered into a splayed shape by cement mortar.
The construction method for the reinforced soil-fixing grid of the large-gradient planted inclined roof has the beneficial effects that:
1. the construction method can ensure the stability of the soil body on the large-gradient planted roof, and the backfilling of the planted soil on the roof with a larger gradient can not cause the loss of the soil body, thereby improving the survival rate of plants.
2. The construction method has the advantages of simple construction process, low cost of materials, manpower and machinery, high applicability, safety and operability, and convenient and good construction, and not only ensures the construction progress and quality, but also ensures the construction benefit.
3. The construction method is wide in application range and can be applied to any planting roof with a large gradient.
Drawings
FIG. 1 is a construction flow chart of the construction method of the reinforced soil-fixing grid for the large-gradient planted inclined roof of the invention;
FIG. 2 is a schematic diagram of a constructed roof constructed by the method for constructing the reinforced and soil-stabilized lattice of the large-gradient planted sloping roof;
FIG. 3 is a schematic diagram of L-shaped steel bar pre-embedding positions in the construction method of the large-gradient planting inclined roof reinforcement and soil stabilization grid;
FIG. 4 is a schematic diagram of the installation and layout of the honeycomb soil fixation grids in the construction method of the reinforced soil fixation grids for the large-gradient planted inclined roof.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The invention relates to a concrete embodiment of a construction method of a reinforced soil-fixing grid of a large-gradient planted inclined roof, which comprises the following steps:
the present embodiment is described as a specific example in field construction.
As shown in fig. 1, the construction method of the reinforced soil-fixing grid for the large-gradient planted inclined roof generally comprises the following construction processes: 20 thick cement mortar leveling layer → 50 thick extruded polystyrene board → 30 thick C20 fine stone concrete leveling → 3+4mmSBS waterproof coiled material → 160 thick inner reinforcing steel bar C25 fine stone concrete waterproof protection → PVC cross collapse-proof drainage board → geotextile filter layer → fixed honeycomb soil fixing grid → backfill light planting soil. The specific roofing method is shown in fig. 2.
The above steps will be described in detail below.
The construction process of the cement mortar leveling layer and the fine aggregate concrete leveling layer comprises the following steps: cleaning a base layer → plugging a pipe root → watering and wetting → constructing a leveling layer → maintaining.
Wherein, 1, basic layer cleaning: loose impurities on the upper surfaces of the structural layer and the heat insulation layer are cleaned, and adhesive impurities such as ash slag and the like protruding out of the surface of the base layer need to be shoveled, so that the effective thickness of the leveling layer cannot be influenced. 2. Plugging a pipe root: before making a leveling layer in a large area, the pipe root, the deformation joint and the root of the roof warm ditch wall are processed. 3. Watering and moistening: before the leveling layer is smeared, water should be properly sprayed to wet the surface of the base layer, the combination of the base layer and the leveling layer is mainly facilitated, however, excessive water cannot be sprayed, so that the drying of the surface of the leveling layer is not influenced, and the waterproof layer is subjected to air nesting after construction to cause hollowing of the waterproof layer. The water is sprayed to the extent that the base layer and the leveling layer can be firmly combined. 4. The construction leveling layer comprises a sticking point elevation, a punching rib and paving cement mortar (fine aggregate concrete). Pasting point elevation and punching rib: according to the requirement of gradient, stay wires are used for finding a slope, when leveling mortar is paved according to a point elevation (plaster cake) of l-2 m, firstly, ribs are punched at an interval of l-2 m in the flowing direction, and division seams of a leveling layer are arranged, the width is generally 20mm, the seams are communicated with a heat insulation layer, and the maximum interval of the division seams is 6m. Paving cement mortar (fine aggregate concrete): loading ash according to the grid blocks, leveling by scraping bar and punching rib, leveling by wooden trowel after finding slope, and press polishing by iron trowel. After the floating water sinks, people step on the floating water to remove the foot mark but not sink, and then press the floating water with an iron trowel for the second time to get the life-saving effect. The fine stone concrete is C20 commercial concrete with the slump of 180 +/-20; the proportion of the leveling layer cement mortar is 1: 3, and the mixing consistency is controlled at 7cm. 6. And (5) maintenance: leveling and compacting the leveling layer, watering and curing for 24 hours, wherein the general curing period is 7 days, and paving a heat-insulating layer or a waterproof layer after drying.
The operation main points of cement mortar screed-coat and fine aggregate concrete screed-coat include: 1. before the construction of the leveling layer, loose sundries on the base layer are cleaned, and hard objects protruding out of the base layer are removed and cleaned. 2. The base layer which is not easy to combine with the leveling layer is subjected to interface treatment, and plain cement paste can be uniformly coated on the base layer once. 3. The quality and the mixing proportion of the materials used for the leveling layer meet the design requirements, and the accurate metering and the mechanical stirring are realized. 4. And the leveling layer is compacted and leveled before initial setting of cement, water collection is completed before final setting of the cement, secondary press polishing is carried out, and the separation strips are taken out in time. The curing time is not less than 7 days, and several ways such as watering, moistening covering, spraying curing agent or brushing cold bottom oil can be adopted for curing. 5. As the leveling layer of the waterproof coiled material base layer, the leveling layer is made into an arc, is neat and smooth at the joint of the protruded roof and the corner of the base layer, the radius of the arc of the modified asphalt waterproof coiled material is preferably 50mm, and the radius of the synthetic polymer waterproof coiled material base layer is preferably 20mm. 6. The environmental temperature is lower than 5 ℃, and the construction of the roof leveling layer is not suitable. If necessary, corresponding winter construction measures are taken.
The construction of the 50-thick extruded polystyrene board is the construction of a heat insulation layer, and the main process comprises the following steps: surface layer cleaning → trial assembly layout → heat preservation layer laying → heat preservation layer acceptance inspection.
Wherein, 1, surface layer cleaning: impurities and dust on the waterproof layer are cleaned. 2. Assembling and trial arranging: after the roof plates are arranged in a trial mode before formal laying, the roof plates are arranged in order according to the serial number by trial splicing according to the serial number arrangement and the actual situation, and if the gaps among the plates are not suitable, the gaps are observed to be adjusted in real time. 3. And (3) pasting the heat preservation plate: (1) Before the extruded polystyrene board is pasted, snapping lines on the surface of the treated base layer wall according to a construction drawing; (2) sticking the extruded polystyrene board by adopting a full sticking method; (3) Dipping the bottom surface of the extruded polystyrene board in the boiled asphalt, directly sticking the extruded polystyrene board to a roof base layer, and fixing the extruded polystyrene board by adopting an expansion bolt with the diameter of M14 multiplied by 120 mm; (4) Should follow one direction during the tiling and spread to another direction, at parapet, eaves gutter and roofing convex rigid member position, should reserve 1-2cm expansion joint when the extruded polystyrene board is pasted: (5) The extruded polystyrene board should be arranged with a staggered seam, and the length of the staggered seam is 1/2 of the length of the standard board and is not less than 100mm. The size of the minimum non-standard insulation board is not less than 150mm and is not arranged at the edge; (6) The nonstandard extruded polystyrene board insulation board can be cut and processed by a portable cutting machine or a hacksaw: (7) The adhesive is respectively coated on the back surface, the side surface and the roof base layer of the heat insulation board.
The key points of the operation of 50-thick extruded polystyrene board construction comprise: 1. when construction is carried out in rainy season, covering measures should be taken; 2. the base layer of the extruded polystyrene board is smooth, dry and clean; 3. the extruded polystyrene board is closely attached to the surface of a base layer needing heat preservation and is paved and stably; 4. the gaps between the plates are tightly embedded and filled by adopting sealant; 5. the adhered extruded polystyrene board is tightly adhered and firmly adhered; 6. the thickness of the extruded polystyrene plate is 50 thick which meets the design requirement; 7. the loose, plate-shaped or integral heat-insulating layer which is laid well can not be constructed, and necessary measures are taken to ensure that the heat-insulating layer is not damaged.
3+4mmSBS waterproof coiled material refers to construction of a waterproof layer of a planted roof. The method mainly comprises the following construction processes: cleaning a base layer → positioning → laying an additional layer → constructing a first layer of coating → acceptance → constructing a second layer of coiled material → sealing and accepting a head → acceptance → testing → water storage testing.
During construction, it is necessary to ensure that: 1. the internal and external corners are as follows: the internal corner and the external corner are made into circular arc shapes, the minimum radius of the internal corner is 50mm, and the minimum radius of the external corner is 20mm. 2. The root part of the tube: after the wall-penetrating pipe root is positioned, the floor slab is used for 1:2.5 when the cement waterproof mortar is tightly blocked and the gap is more than 20mm, the fine stone waterproof concrete can be used for tightly blocking. A groove is reserved between the pipe root and the concrete, the depth of the groove is 10mm, the width of the groove is 10mm, and sealing paste or waterproof mortar is embedded and filled. The part connected with the ground around the pipe root is plastered into a splayed shape by cement mortar. 3. The through-wall pipeline and the connecting piece are firmly installed and have tight seams, and if rust and oil stain exist, the through-wall pipeline and the connecting piece are cleaned by a steel wire brush, abrasive paper, a solvent and the like.
The operation main points of waterproof layer include: 1. the base layer is required to be solid, flat, dry and free of unevenness, looseness and sanding. The internal and external corners should be made into circular arc corners. 2. And (3) uniformly coating a base layer treating agent on the base layer, wherein the thickness is required to be uniform, the base layer treating agent does not leak, is not accumulated, is dried until the base layer treating agent is not sticky when touched by fingers, and then an additional layer can be paved and a large-area coiled material is paved. 3. The three-side internal corner and the upturning internal corner are cut to be in proper size and pattern by adopting a film-coated coiled material and are fixed on the base layer by using cement steel nails so as to enhance the waterproof effect of the weak parts. 4. When a waterproof layer of the coil is laid on a large surface, firstly, a datum line is bounced, the coil is laid for 5m to 6m in a trial mode by aligning with the datum line, the isolation paper is slightly cut by a paper cutter, the coil does not need to be scratched, the isolation paper is slowly torn on the back of the coil, meanwhile, the coil is slowly pushed forwards along the datum line, and the coil is laid while the isolation paper is torn. And after the coiled material is laid, the coiled material which is laid in the previous test is coiled and is laid and adhered on the base layer according to the method. And (3) forcibly rolling the coiled material towards two sides by using a matched compression roller to remove air below the coiled material. Firmly adhering to the base layer and compacting. And laying the next coiled material, aligning the adjacent coiled material with the lap joint control line, and paving the adjacent coiled material by adopting the method (the adhesive needs to be brushed according to the lap joint width). 5. And special sealant is adopted to seal weak positions such as the end of a waterproof layer of the coiled material, more cut openings of the coiled material, abnormal parts and the like. And after the waterproof construction is finished, a waterproof protective layer is made as soon as possible. 6. Water storage test: and after all the waterproof layers are completely paved, the self-inspection is qualified, and an engineering supervision manager is informed to check and accept the waterproof layers. And after the acceptance is qualified, storing water for 24 hours. And a surface layer can be made after no leakage is ensured.
The construction of the waterproof protection of the 160-thick internal reinforcing steel bar C25 fine-stone concrete comprises the following steps: cleaning a base layer → binding reinforcing steel bars → pouring surface layer concrete → maintaining. Wherein, 1, basic unit clearance: loose impurities on the upper surface of the waterproof layer are cleaned, clinkers and other bonding impurities protruding out of the surface of the base layer need to be shoveled, and the effective thickness of the protective layer cannot be influenced. 2. Binding steel bars: binding phi 8@150 bidirectional steel bars on the waterproof layer, and using cushion blocks to cushion the steel bars. 3. Pouring surface layer concrete: should carry out typesetting to L shaped steel bar before pouring, control position, accurate positioning, pour the limit according to the L shaped steel bar of unloading in advance and typesetting and pre-buried at the same time in the process of pouring, L shaped steel bar, interval 400mm, plum blossom shape are arranged, the model is HRB400E, the diameter is 16mm, as shown in figure 3, it is 300mm to expose the finished surface height of pea gravel concrete waterproof protective layer, the flat section in the anchor pea gravel concrete waterproof protective layer and crotch length are 300mm. 4. And (5) maintenance: and after the waterproof protective layer is leveled and compacted, the waterproof protective layer can be watered and maintained for 24 hours, the general maintenance period is 7 days, and the drainage plate and the geotextile are laid after drying.
The construction main points of arrangement of reinforcement C25 fine gravel concrete water proof in 160 thick include: 1. protective layer is 160mm thick C25 pea gravel concrete internal-match phi 8@150 bidirectional steel bar, pre-buried L shaped steel bar, interval 400mm, and the quincunx is arranged, and the model is HRB400E, and diameter 16mm exposes highly for 300mm, and anchor protective layer crotch length is 300mm. 2. And the L-shaped steel bars are typeset before the protective layer is poured, the position is controlled, and the positioning is accurate. 3. The exposed length of the L-shaped steel bar is strictly controlled in the pouring process.
The PVC cross collapse prevention drainage plate construction process comprises the following steps: 1. cleaning up the garbage on the waterproof protection layer of the fine stone concrete, leveling the garbage by using mortar to ensure that no obvious height difference exists, wherein the PVC cross anti-collapse drainage plate is a concave-convex plastic drainage plate, and the flatness of the drainage plate is controlled during laying; 2. in order to ensure reliable lap joint of the connecting parts and no water leakage. A straight section within the range of 10cm in the length direction is connected by a hot melting method without concave-convex hollow studs; concave-convex hollow studs are arranged in the width direction, and after glue is coated, the hollow studs are overlapped and compacted; 3. after the drain bar is laid, the upper part of the drain bar is covered with the geotextile filter layer, so that the soil can be prevented from entering the lug boss of the drain bar to block water flow. Water flows to the drainage plate through the covering layer, flows to the blind ditches on the periphery along the gradient direction, and then is collected into the water collecting pit through the blind ditches.
The construction key points of PVC cross anti-collapse drain bar include: 1. the drain board is stored in a dry and ventilated environment to prevent solarization and keep away from a fire source. 2. The drainage protection plate can not be inclined or cross-pressed when being placed vertically or horizontally, the stacking height does not exceed 3 layers, and the weight stacking is avoided. 3. When laying, the concrete should be leveled naturally, along a slope or along the water flow direction. 4. The cross anti-collapse drainage plate is arranged on the vertical section of the L-shaped reinforcing steel bar in a penetrating mode.
The construction of the geotextile filter layer comprises the following construction processes: checking the substrate → positioning and paying-off → cutting geotextile → laying → checking and accepting. Specifically, 1, substrate inspection: and (4) checking whether the base layer has unevenness, impurities and the like, leveling the base, and finishing the impurity cleaning without accumulated water. 2. Positioning and paying off: and typesetting and paying off the geotextile according to the drawing and the actual situation on site. 3. Cutting the geotextile: and cutting according to the typesetting. 4. Laying: and (3) paving the geotextile in a dry mode, wherein the lapping width is not less than 200mm, and the geotextile is laid smoothly without folds.
The geotechnical cloth filter layer has the following construction main points: 1. before the geotextile, submitting a detailed geotextile laying drawing to an engineer; 2. manually spreading, wherein the cloth surface needs to be smooth, and a deformation allowance is left if necessary; 3. the geotextile can be naturally lapped, and the width of the natural lapping is not less than 200mm; 4. the seam must intersect with the slope surface line, the distance of the horizontal seam must be more than 1.5 m at the place where the slope toe is balanced or stress may exist; 5. on the slope surface, one feeding of the upper fabric is staggered, and then the upper fabric is put down along the city surface to ensure that the upper fabric keeps a tensioned state; 6. all geotextiles need to be pressed by sand pots, and the sand pots are used during the laying process and are reserved on a layer of material on the upper surface of the laying; 7. determining the size of the geotextile according to the field condition, trial paving after cutting, checking whether the cutting size is accurate, checking whether the lap joint width is proper, leveling the lap joint part and ensuring proper tightness; 8. connecting the lap joint parts of the two geotextiles by wind-holding inspection, wherein the distance between the connection points is proper, the cutting line of the lapping parts is straight and straight, and the stitches are uniform; 9. after sewing, whether the geotextile is laid smoothly or not and whether defects exist or not are checked, and if the defects do not meet the requirements, the geotextile should be repaired in time.
The construction of the honeycomb soil fixing lattice comprises the following steps: positioning and paying-off → laying honeycomb soil fixing grids → backfilling planting soil. Wherein, 1, positioning and paying-off: and typesetting and paying off the honeycomb soil fixing grids according to the drawing and the actual situation on site. 2. Laying a soil fixing grid: and stretching the finished soil fixing grid into a full diamond state, and fixing the diamond state on the pre-embedded L-shaped steel bar, as shown in fig. 4. The honeycomb soil fixing grids are stretched into a rhombic state in each grid area and are fixed on the vertical sections of the L-shaped reinforcing steel bars, and the vertical sections of the L-shaped reinforcing steel bars are all positioned at the peripheral corners of the corresponding rhombic grid areas stretched by the honeycomb soil fixing grids.
The construction of backfilling the light planting soil comprises basic layer cleaning → planting soil entering field → planting soil backfilling. Wherein, 1, basic unit clearance: and cleaning up sundries in the soil fixing grids. 2. Entering planting soil: when the light planting soil enters a field, a specially-assigned person must be sent to clean automobile tires, the construction field is cleaned to be flat, no sundries exist, and a transportation road needs to be bricked and coated with a film to carry out finished product protection. The light planting soil has the advantages of good physical and chemical properties, loose structure, ventilation, strong water and fertilizer retention capacity and suitability for soil for growth of landscape plants. High-quality soil dug in the green belt is preferentially utilized, the soil does not contain organic impurities, gravels and excessive sands, and the light planting soil is piled to a specified place after the light planting soil is qualified. 3. Backfilling planting soil: and (3) transporting the backfilled soil to a specified position, transporting the backfilled soil to the roof in a matching way by using a tower crane, hoisting the light planting soil to the roof by using the tower crane, manually dispersing and leveling the planting soil, controlling the elevation to be 100mm higher than the honeycomb soil fixing grids, and covering L-shaped steel bars.
Aiming at the construction of the large-gradient planted roof, the construction process of the novel large-gradient planted inclined roof reinforced soil-fixing lattice is finally formed by laying a 160 mm-thick fine stone concrete waterproof layer above a roof waterproof layer, pre-burying vertical L-shaped steel bar fixed honeycomb soil-fixing lattices, laying PVC cross collapse-preventing drainage plates, geotextile filter layers and the like, so that the gliding and water and soil loss of a roof planted soil body are effectively prevented, the soil body stability of the inclined roof is ensured, and the survival rate of plants is improved.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The construction method of the reinforced soil-fixing lattice for the large-gradient planted inclined roof is characterized in that a fine aggregate concrete waterproof protective layer, a cross collapse-shaped anti-collapse drainage plate, a geotextile filter layer and a honeycomb soil-fixing lattice with set thickness are sequentially laid above a roof waterproof layer from bottom to top, and then light planting soil is filled in the honeycomb soil-fixing lattice;
a plurality of L-shaped steel bars are embedded in the fine aggregate concrete waterproof protective layer, the straight sections of the L-shaped steel bars are positioned in the fine aggregate concrete waterproof protective layer, and the vertical sections of the L-shaped steel bars extend out of the fine aggregate concrete waterproof protective layer;
the cross anti-collapse drainage plate and the geotextile filter layer are sequentially arranged on the vertical section of the L-shaped reinforcing steel bar in a penetrating manner;
the honeycomb soil fixing grids are stretched into a rhombic state in each grid area and are fixed on the vertical sections of the L-shaped reinforcing steel bars, and the vertical sections of the L-shaped reinforcing steel bars are positioned at the peripheral corners of the corresponding rhombic grid areas stretched by the honeycomb soil fixing grids;
and when the light planting soil is backfilled, controlling the elevation to be higher than the honeycomb soil fixing grids and covering the vertical section of the L-shaped steel bar.
2. The construction method of the reinforced soil-fixing lattice for the large-gradient planted inclined roof as claimed in claim 1, wherein the fine aggregate concrete waterproof layer is formed by pouring C25 concrete and internally provided with bidirectional reinforcing steel bars; the method comprises the steps of typesetting the L-shaped steel bars before pouring, controlling the position, pouring and embedding the L-shaped steel bars according to the blanking in advance and the typesetting in the pouring process, wherein the L-shaped steel bars are arranged in a quincunx shape.
3. The construction method for the reinforced soil-fixing grid of the large-gradient planted inclined roof is characterized in that the cross-shaped collapse-preventing drainage plate is a concave-convex plastic drainage plate, before the cross-shaped collapse-preventing drainage plate is installed, garbage on the fine stone concrete waterproof protective layer is cleaned, mortar is used for leveling, no obvious height difference is ensured, the concave-convex plastic drainage plate is paved, and the flatness of the drainage plate is controlled; setting a straight section within a distance range in the length direction, wherein the straight section is connected with the concave-convex hollow vertical ribs by a hot melting method without concave-convex hollow vertical ribs; concave-convex hollow studs are arranged in the width direction, and after the glue is coated, the hollow studs are overlapped and then compacted.
4. The construction method of the reinforced soil-fixing lattice for the sloping planted pitched roof as claimed in claim 1, wherein when the geotextile filter layer is laid, a natural lap joint mode is adopted, the seam must intersect with the slope surface line, and the distance of the horizontal seam must be larger than the set parameters in the place where the slope toe is balanced or stress may exist; on the slope surface, carrying out staggered cycle on the first feeding of the upper industrial fabric, and then putting down the upper industrial fabric along the city surface to ensure that the upper industrial fabric keeps a tensioned state; all geotextiles must be held down by sand pots which will be used during the laying and remain on top of the laying.
5. The construction method for the reinforced soil grid of the large-gradient planted inclined roof, according to claim 4, is characterized in that when the geotextile is laid, the size of the geotextile needs to be determined according to the field condition, and the geotextile is cut and laid in a trial mode; after the size is determined, the lap joint parts of the two geotextiles are connected by wind-holding inspection, and the cutting-edge time cutting-edge line of the lap joint parts is straight and straight, and the stitches are uniform.
6. The method for constructing the large-gradient planted inclined roof reinforcement and soil consolidation grid according to any one of claims 1 to 5, characterized in that a cement mortar leveling layer, a heat insulation layer, a fine stone concrete leveling layer and a waterproof layer are constructed in sequence before the roof waterproof layer is constructed.
7. The construction method of the reinforced soil-fixing grid for the large-gradient planted inclined roof is characterized in that the heat-insulating layer is made of extruded polystyrene boards, the extruded polystyrene boards are made of a full-adhesive method, the bottom surfaces of the extruded polystyrene boards are dipped in boiled asphalt and then directly adhered to the roof base layer, and the extruded polystyrene boards are fixed by expansion bolts; paving from one direction to the other direction during paving, and reserving expansion joints of 1-2cm when the extruded polystyrene board is adhered at the positions of the rigid components protruding from the parapet, the gutter and the roof; and paving in a staggered joint arrangement mode, wherein the length of the staggered joint is 1/2 of the length of the standard plate.
8. The construction method for the reinforced soil grid of the large-gradient planted inclined roof, according to claim 6, is characterized in that when the waterproof layer is constructed, the internal and external corners are made into circular arc shapes, and the minimum radius of the internal corner is larger than that of the external corner; after the wall-penetrating pipe root is positioned, the periphery of the floor slab is tightly blocked by cement waterproof mortar, a groove is reserved between the pipe root and concrete and is used for embedding and filling sealing paste or waterproof mortar, and the part, connected with the ground, of the periphery of the pipe root is smeared into a splayed shape by the cement mortar.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117266456A (en) * | 2023-09-19 | 2023-12-22 | 北京建工四建工程建设有限公司 | Roof planting structure containing top overhead layer and construction method thereof |
| CN117266457A (en) * | 2023-09-19 | 2023-12-22 | 北京建工四建工程建设有限公司 | Planting roof suitable for large-gradient full-waterproof and construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117266456A (en) * | 2023-09-19 | 2023-12-22 | 北京建工四建工程建设有限公司 | Roof planting structure containing top overhead layer and construction method thereof |
| CN117266457A (en) * | 2023-09-19 | 2023-12-22 | 北京建工四建工程建设有限公司 | Planting roof suitable for large-gradient full-waterproof and construction method thereof |
| CN117266457B (en) * | 2023-09-19 | 2024-06-25 | 北京建工四建工程建设有限公司 | Planting roof suitable for large-gradient full-waterproof and construction method thereof |
| CN117266456B (en) * | 2023-09-19 | 2024-06-25 | 北京建工四建工程建设有限公司 | Roof planting structure containing top overhead layer and construction method thereof |
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