CN210163748U - Water storage type high-bearing grass planting permeable terrace for soft soil foundation - Google Patents

Abstract

The utility model relates to a soft soil foundation water storage type height bears grass planting terrace that permeates water, its characterized in that: the top sand pile is driven into a soft soil foundation, and the permeable base layer and the leveling layer are sequentially laid on the soft soil foundation; the reticular bearing layer is laid above the leveling layer and comprises an oval column module and a plum blossom-shaped module which are mutually meshed; the planting soil is filled in a grid formed by the elliptic cylinder module and the plum blossom-shaped module. The utility model discloses bear the weight of the dynamic height, water storage nature is good, the afforestation rate is high, construction convenience possesses obvious economic benefits and social.

Description

Water storage type high-bearing grass planting permeable terrace for soft soil foundation

Technical Field

The utility model belongs to the municipal works field especially relates to a soft soil foundation water storage type height bears grass planting terrace that permeates water, is applicable to the terrace construction in parking area, fire control passageway, park etc. is particularly useful for the terrace construction of soft soil foundation geological conditions.

Background

In recent years, the economy of China is rapidly developed, vehicles are rapidly increased, and the problem of difficulty in parking in cities is increasingly serious. The use of urban corner spaces (such as roadside greenbelts and the like) and the arrangement of small parking spaces therein has long been an important approach to solve the problem. Along with the continuous improvement of the ecological environment consciousness of people, the small parking space is also developed to ecology all the time. At present, the small parking space uses more ecological terrace to have brick terrace, grass planting brick terrace and the concrete terrace that permeates water. The three ecological terraces have porous structures, can quickly supplement ground water into underground water resources, and realize ecological functions. Besides, the grass planting brick terrace can plant plants by utilizing the holes of the grass planting bricks, so that the vegetation coverage rate is improved; the pervious concrete terrace has the advantages of high bearing capacity and strong integrity.

In a soft soil foundation, when the traditional grass planting bricks are adopted for paving, the strength of the soil foundation is reduced along with the increase of the water content in the soil body, and the foundation is likely to sink unevenly or even crack and collapse; in addition, because the permeability coefficient of the soft soil foundation is very small and the soil body improvement cost is too high, rainwater needs to be transferred to other LID facilities through pipes and channels laid in the base layer, so that the construction cost is greatly increased, and the construction difficulty is also increased; in addition, the traditional grass planting bricks also have the problems of weak bearing capacity, easy displacement or damage under the action of external force, low terrace greening rate in a concrete grass-coating form and the like.

SUMMERY OF THE UTILITY MODEL

This implement neotype aim at to the ground that traditional grass planting brick terrace exists easily subsides or the fracture collapses, need establish the canal and with high costs and the construction loaded down with trivial details, grass planting brick easily shifts or damage, afforestation rate low scheduling problem in basic unit, has provided a soft soil ground water storage type height and has born the grass planting terrace of permeating water.

In order to realize the technical purpose, the utility model discloses a following technical scheme:

the utility model relates to a soft soil foundation water storage type high-bearing grass planting permeable terrace, which comprises a gyro sand pile, a permeable base layer, a leveling layer, a net-shaped bearing layer and planting soil, wherein the gyro sand pile is driven into the soft soil foundation, and the permeable base layer and the leveling layer are sequentially laid on the soft soil foundation; the reticular bearing layer is laid above the leveling layer and comprises an oval column module and a plum blossom-shaped module which are mutually meshed; the planting soil is filled in a grid formed by the elliptic cylinder module and the plum blossom-shaped module.

Preferably, a plurality of arc grooves are formed in the circumferential direction of the plum blossom-shaped modules, the radians of the arc grooves are matched with the radians of the two end parts of the long diameter of the plum blossom-shaped modules, elliptic cylinder modules which are equal to the arc grooves of the single plum blossom-shaped module are connected around each plum blossom-shaped module, and two plum blossom-shaped modules are connected to each elliptic cylinder module.

Preferably, the size of the horizontal section of the plum blossom-shaped module is gradually increased from top to bottom, and a protrusion is arranged in each arc-shaped groove; the size from the top down of the horizontal cross-section of oval post module diminishes gradually, and the position that oval post module corresponds long diameter both ends is equipped with the recess with protruding complex, and the arch card is gone into in the recess.

Preferably, the top sand pile is arranged in a quincunx shape and sequentially comprises a diameter-variable section, a straight cylinder section and a pile head from top to bottom.

Preferably, the height of the elliptic cylinder module is twice that of the plum blossom-shaped module.

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses set up top sand pile in the soft soil foundation, top sand pile adopts closely knit rubble, sand to replace the soft soil with low modulus, low strength that the pile body volume is the same, when bearing the outer load, and stress concentrates gradually to the pile body, and the pressure that the soil body all around the stake bore correspondingly reduces. Because the strength and the anti-deformation capability of the peg-top sand pile are superior to those of soft soil, the bearing capacity and the modulus of the formed composite foundation are superior to those of the original soil body, so that the deformation of the soft soil foundation is reduced, and the bearing capacity of the terrace is improved.

(2) The gyro sand pile is arranged in the soft soil foundation, so that the water passing area is greatly increased, the soil body permeation path around the pile side and at the pile bottom is shortened to some extent, the water head pressure acting on the pile side and at the pile bottom is also improved to some extent, the comprehensive seepage flow rate of the soil body is obviously improved, the water storage capacity of the grass planting terrace is further effectively improved, and the effects of preventing local water damage, keeping surface water, prolonging the flood discharge time and the like are achieved.

(3) The oval column modules and the plum blossom-shaped modules are mutually meshed to form a net-shaped bearing layer with good structural integrity, the bottom layer is continuous net-shaped concrete, the bearing can be uniformly stressed after being pressed, the fracture and the settlement cannot occur, and the requirement of traffic bearing is met while the high greening rate is realized.

(4) All grass planting cavities in the net-shaped bearing layer formed by the oval column modules and the plum blossom-shaped modules are mutually connected and are directly connected with the permeable base layer, so that the survival rate of grass planting can be greatly improved; the unique 'grass-coated concrete' mode replaces the traditional 'concrete-coated grass' mode, so that the concrete module is more easily covered by grass planting, and the greening rate can reach more than 60%.

Drawings

FIG. 1 is a sectional view of a soft soil foundation water storage type high-bearing grass planting permeable terrace;

FIG. 2 is a cross-sectional view of a soft soil foundation water storage type high-bearing grass planting permeable terrace A-A;

FIG. 3 is a perspective view of a top sand pile;

FIG. 4 is a plan view of a quincunx module;

FIG. 5 is a perspective view of a quincunx module;

FIG. 6 is a plan view of an elliptical cylinder module;

FIG. 7 is a perspective view of an elliptical cylinder module;

fig. 8 is an assembly diagram of a quincunx module and an elliptic cylinder module.

In the figure: 1. the soil planting method comprises the following steps of (1) a soft soil foundation, (2) a top sand pile, (201) a reducing section, (202) a straight cylinder section, (203) a pile head, (3) a permeable base layer, (4) a leveling layer, (5) a plum blossom-shaped module, (500) an arc-shaped groove, (501) a protrusion, (6) an oval column module, (601) a groove and (7) planting soil.

Detailed Description

The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, and the following examples are illustrative of the present invention and are not limited to the following examples. The terrace construction of a certain parking lot adopts a soft soil foundation water storage type high-bearing grass planting permeable terrace.

Combine the attached drawing 1 to show, the utility model relates to a soft soil foundation water storage type height bears grass planting terrace that permeates water, including top sand pile 2, basic unit 3, screed-coat 4, netted bearer layer and planting soil 7 of permeating water. Referring to fig. 3, the top sand pile 2 includes a diameter-variable section 201, a straight section 202 and a pile head 203 from top to bottom. The variable diameter section 201 is 250mm high, the diameter of the upper surface is 500mm, and the diameter of the lower surface is 100 mm; the straight cylinder section 202 is 200mm high and 100mm in diameter; the pile head 203 is a cone, the diameter of the upper surface is 100mm, and the height is 50 mm; referring to the attached figure 2, the gyro sand piles 2 are arranged in a quincunx shape and are driven into the soft soil foundation 1, and the distance between the transverse center and the longitudinal center of each gyro sand pile 2 is 1.2 m.

With reference to the attached drawing 1, the permeable base layer 3 and the leveling layer 4 are sequentially laid on the soft soil foundation 1, the permeable base layer 3 is graded broken stones with the thickness of 180mm, and the leveling layer 4 is medium coarse sand with the thickness of 30 mm.

Referring to fig. 1, the reticular bearing layer is laid above the leveling layer 4, and comprises an elliptic cylinder module 6 and a plum blossom-shaped module 5 which are meshed with each other. Combine that fig. 4 and 5 show, plum blossom module 5's horizontal cross-section's size from the top down grow gradually, plum blossom module 5 height 75mm, plum blossom module 5's circumference sets up a plurality of arc recesses 500 (the utility model discloses in be equipped with four arc recesses 500 on every plum blossom module 5), arc recess 500's radian and the radian phase-match of the long diameter both ends portion of plum blossom module 5 all are equipped with arch 501 in every arc recess 500. Referring to fig. 6 and 7, the size of the horizontal cross section of the elliptic cylinder module 6 is gradually reduced from top to bottom, the upper surface has a long diameter of 150mm and a short diameter of 100mm, the lower surface has a long diameter of 130mm and a short diameter of 80mm, the elliptic cylinder module 5 has a height of 150mm, and the elliptic cylinder module 6 is provided with grooves 601 matched with the protrusions 501 at positions corresponding to the two ends of the long diameter. As shown in fig. 8, four elliptical pillar modules 6 are connected around each quincunx-shaped module 5, two quincunx-shaped modules 5 are connected to each elliptical pillar module 6, when the connection is performed, the protrusions 501 are clamped into the grooves 601 to realize occlusion, the elliptical pillar modules 6 and the quincunx-shaped modules 5 form a grid in a surrounding manner, and the planting soil 7 is filled in the grid.

The main construction process of the soft soil foundation water storage type high-bearing grass planting permeable terrace is as follows:

step one, treating a foundation: according to the design requirement, excavating a soft soil foundation 1, clearing earthwork and achieving the design elevation; checking whether the longitudinal slope, the transverse slope and the sideline meet the design requirements or not; trimming the soft soil foundation 1, leveling, rolling and compacting, wherein the compaction coefficient reaches over 95 percent, and paying attention to underground pipelines.

Step two, constructing a gyro sand pile 2: measuring and paying off the upper surface of the soft soil foundation 1 to determine the position of the gyro sand pile 2; then a pickaxe, a hydraulic piling car or other small-sized machines are matched and manually extruded to form a pile hole of the gyro sand pile 2; then, manually pouring the sandstone materials which are mixed uniformly in advance according to a certain proportion into the hole and filling the hole to be compact; in the construction, the pile length, the sand filling amount and the sand-stone gradation of the top sand pile 2 are mainly controlled, and a secondary driving process is adopted if necessary.

Step three, constructing a permeable base layer 3: paving the material of the permeable base layer 3 to ensure that the grading distribution of the material is uniform and no obvious particle separation phenomenon exists; and further leveling and rolling the permeable base layer 3 to be compact, and ensuring that the compactness of the permeable base layer is over 95 percent.

Step four, constructing a leveling layer 4: and (3) paving, leveling and rolling the leveling layer 4 material to be compact, and ensuring that the compactness of the leveling layer is over 95 percent.

Step five, installing the elliptic cylinder module 6 and the plum blossom-shaped module 5: before the module is installed, the surface of the module is smooth, edges and corners of the module are neat, and the defects of deflection, warping, hollowing, missing edges, corner drop, cracks and the like are overcome; cleaning the surface of the leveling layer 4, and controlling a line according to design elasticity on the leveling layer; further smearing mortar according to the control line and paving the first plum blossom-shaped module 5 in place; then, coating mortar on the periphery of the quincunx module 5, installing the elliptic cylinder module 6, hammering the module stably by using a rubber hammer, and ensuring that the quincunx module 5 and the elliptic cylinder module 6 are tightly engaged with the protrusion 501 through the groove 601; then the other end of the elliptic cylinder module 6 is in snap-in connection with the plum blossom-shaped module 5 and is hammered stably; and circulating the operations until all the modules are installed to form the reticular bearing layer.

Step six, ridging and grass planting: filling planting soil 7 in the hole cavity of the reticular bearing layer by using a small funnel shovel; then, the turf is divided into blocks with the size of the pore space by a hay cutter, the blocks are artificially planted in the planting soil 7 of the pore space of the terrace, and point fertilizer is properly applied and watering is carried out during cultivation, so that the survival rate of the grass is ensured.

The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (5)

1. The utility model provides a soft soil foundation water storage type height bears grass planting terrace that permeates water which characterized in that: the top sand pile planting device comprises a top sand pile (2), a permeable base layer (3), a leveling layer (4), a net-shaped bearing layer and planting soil (7), wherein the top sand pile (2) is driven into a soft soil foundation (1), and the permeable base layer (3) and the leveling layer (4) are sequentially laid on the soft soil foundation (1); the reticular bearing layer is laid above the leveling layer (4), and comprises an elliptic cylinder module (6) and a plum blossom-shaped module (5) which are mutually meshed; the planting soil (7) is filled in a grid enclosed by the elliptic cylinder module (6) and the plum blossom-shaped module (5).

2. The soft soil foundation water storage type high-bearing grass planting permeable terrace according to claim 1, characterized in that: the circumference of plum blossom form module (5) set up a plurality of arc recess (500), the radian of arc recess (500) and the radian phase-match of plum blossom form module (5) long diameter both ends portion, connect around every plum blossom form module (5) with arc recess (500) equivalent oval column module (6) of single plum blossom form module (5), connect two plum blossom form modules (5) on every oval column module (6).

3. The soft soil foundation water storage type high-bearing grass planting permeable terrace according to claim 1 or 2, characterized in that: the size of the horizontal section of the plum blossom-shaped module (5) is gradually increased from top to bottom, and a protrusion (501) is arranged in each arc-shaped groove (500); the size of the horizontal section of the elliptic column module (6) is gradually reduced from top to bottom, grooves (601) matched with the protrusions (501) are formed in the positions, corresponding to the two ends of the long diameter, of the elliptic column module (6), and the protrusions (501) are clamped into the grooves (601).

4. The soft soil foundation water storage type high-bearing grass planting permeable terrace according to claim 1, characterized in that: the gyroscope sand pile (2) is arranged in a quincunx shape, and the gyroscope sand pile (2) sequentially comprises a diameter-variable section (201), a straight cylinder section (202) and a pile head (203) from top to bottom.

5. The soft soil foundation water storage type high-bearing grass planting permeable terrace according to claim 1, characterized in that: the height of the elliptic cylinder module (6) is twice of that of the plum blossom-shaped module (5).

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