CN206438465U - A kind of ecological self-purification type landscape revetment reconstruction structure - Google Patents

Abstract

The utility model discloses an ecological self-cleaning type landscape revetment reconstruction structure, which comprises a retaining wall body. The retaining wall body is partially demolished to the design elevation. There are several drainage grooves arranged at intervals in the extending direction of the shoreline; at least one level of aquatic platform in front of the wall is arranged on the ground of the river embankment in front of the water-facing side of the retaining wall, and each level of aquatic platform in front of the wall is planted with Aquatic plants; a drainage filter structure is set on the retaining side of the partially demolished retaining wall; a filter drainage layer is laid on the ground behind the partially demolished retaining wall; The slope is built with several levels of land terraces at intervals from top to bottom, and terrestrial plants are planted on the land terraces behind each level of wall. The utility model has the advantages of safety and durability, beautiful ecological landscape, innovation, environmental protection and energy saving, simple and economical, convenient maintenance and the like.

Description

An ecological self-purification landscape revetment structure

technical field

The utility model relates to the technical field of ecological landscape reconstruction of river and lake embankments, in particular to an ecological self-purification landscape revetment reconstruction structure based on a traditional retaining wall structure for ecological landscape reconstruction.

Background technique

With the advancement of urbanization, the traditional retaining wall structure can no longer meet people's needs for ecological landscape. In recent years, the frequent occurrence of urban waterlogging has promoted the concept of building a "sponge city", which includes the construction of ecological rivers and their subsidiary structures.

In order to improve the urban disadvantages and beautify the environment, more and more river ecological reconstruction projects are included in the construction plan. At present, most of the common transformation methods are to demolish the existing revetment and rebuild new ecological revetment, but there are a series of disadvantages such as large negative impact on the surrounding environment, waste of resources, high energy consumption, and high cost. At the same time, due to the increasing shortage of land resources, the construction waste generated There is nowhere to place it.

Gravity-type mortar block stone revetment is the oldest form of retaining wall structure. It has been widely used because of its rich material source, simple form, convenient material acquisition and convenient construction. Referring to Fig. 1, what provided in the figure is the existing grout block stone gravity revetment, including the front row of reinforced concrete prefabricated square piles 10, the rear row of reinforced concrete prefabricated square piles 20, the front row of reinforced concrete prefabricated square piles 10 and the rear The top of the row of reinforced concrete prefabricated square piles 20 and the reinforced concrete bottom plate 30 fixedly connected with the front row of reinforced concrete prefabricated square piles 10 and the rear row of reinforced concrete prefabricated square piles 20, and the mortar block stone wall body arranged on the reinforced concrete bottom plate 30 40 and the pressure top 50 that is arranged on the top surface of the mortar block stone wall body 40 . For plain areas with small terrain drop, low river water, and small retaining height, from the perspective of economics and practicality, gravity-type mortar block stone bank revetment structures are mostly used.

Based on the needs of urban development, it is necessary to carry out ecological transformation of the current revetment. Most designers usually completely dismantle the existing retaining wall structure and replace it with prefabricated concrete blocks, ecological gabions and other revetment structures with good ecological landscape effects, which have achieved certain results in the ecological management of rivers and lakes. . However, because most of the current revetment is still within the service life, the structure is safe and reliable, safe demolition and reconstruction are neither economical nor environmentally friendly, and the implementation is also difficult, with obvious shortcomings. An ecological transformation plan with only partial demolition.

For this reason, the applicant has conducted useful explorations and attempts, and has found a solution to the above-mentioned problems, and the technical solutions to be introduced below are produced under this background.

Utility model content

The technical problem to be solved by the utility model is to provide an economical and environment-friendly protection system for the current revetment, which is neither economical nor environmentally friendly, and difficult to implement, due to the fact that the existing retaining wall structure is completely dismantled when carrying out ecological transformation. It is also convenient for construction and implementation and is a safe and durable ecological self-purification landscape revetment reconstruction structure.

The technical problem to be solved by the utility model can be realized by adopting the following technical solutions:

An ecological self-cleaning landscape revetment reconstruction structure, comprising a front row of piles, a rear row of piles, a retaining wall bottom plate arranged on the top of the front row of piles and the rear row of piles and fixedly connected to the front row of piles and the rear row of piles, and The retaining wall body arranged on the bottom plate of the retaining wall is characterized in that the retaining wall body is partially demolished to the design elevation, and the top surface of the partially demolished retaining wall body is along the bank of the retaining wall. There are several drainage grooves at intervals in the direction of the line extension, and each drainage groove connects the water-facing side and the soil-retaining side of the partially demolished retaining wall; on the ground of the river embankment, the retaining There is at least one level of aquatic platform in front of the wall in front of the water-facing side of the wall, and aquatic plants are planted on each level of aquatic platform in front of the wall; the retaining side of the partially demolished retaining wall is provided with There is a drainage filtering structure, and a top paving cushion is laid on the top surface of the partially demolished retaining wall and the drainage filtering structure, and the top paving cushion forms a horizontal viewing platform; A filter drainage layer is laid on the ground behind the partially demolished retaining wall; on the filter drainage layer along the slope from top to bottom, there are several levels of terrestrial terraces behind the wall, each level Land plants are planted on the land terrace behind the wall.

In a preferred embodiment of the present invention, cement mortar is used to smooth the stone joints on the surface involved when the wall body of the retaining wall is partially demolished.

In a preferred embodiment of the present utility model, there are two aquatic platforms in front of the wall, which are respectively the first-level aquatic platform in front of the wall and the second-level aquatic platform in front of the wall. The design of the first-level aquatic platform in front of the wall The elevation is lower than the design elevation of the aquatic platform in front of the second-level wall, the aquatic plants planted on the aquatic platform in front of the first-level wall are aquatic plants with a water-resistant depth of 0.8m to 1m, and the aquatic plants in front of the second-level wall The aquatic plants planted on the platform are aquatic plants with a water tolerance depth of 0.3m to 0.6m.

In a preferred embodiment of the present utility model, the outer edges of the aquatic platform in front of the first-level wall and the aquatic platform in front of the second-level wall adopt close-packed round wooden piles to retain soil, and the piles of the round wooden piles The diameter is 0.1m-0.2m, and the pile length of the round wooden pile is 2m-3m.

In a preferred embodiment of the present invention, the round wooden piles arranged at the outer edge of the aquatic platform in front of the second-stage wall are arranged in a wave-shaped arrangement, or connected along the river, or arranged at intervals.

In a preferred embodiment of the present utility model, several anti-corrosion woods are laid at intervals along the extension direction of the retaining wall shoreline on the top pavement cushion.

In a preferred embodiment of the present utility model, the drainage filtering structure is composed of a prismatic ecological gabion and a bagged crushed stone filter layer which are sequentially arranged on the retaining soil side of the partially demolished retaining wall. constitute.

In a preferred embodiment of the present invention, the filter drainage layer is composed of a gravel permeable layer and a geotextile arranged on the gravel permeable layer.

In a preferred embodiment of the present invention, the terrestrial terraces behind the several levels of walls are formed by laying the partially demolished part of the retaining wall on the filter drainage layer.

In a preferred embodiment of the present invention, the width of the terrestrial terrace behind the several levels of walls increases gradually from top to bottom.

In a preferred embodiment of the present utility model, a number of pedestrian paths are arranged at intervals along the extension direction of the retaining wall shoreline on the land terraces behind the several levels of walls, one end of each pedestrian path is located at the top of the embankment, and the other end Extend down to the horizontal viewing platform.

In a preferred embodiment of the utility model, a pedestrian walkway is laid on the top of the embankment along the extension direction of the retaining wall shoreline, and the pedestrian walkway is composed of several bluestone slabs arranged at regular intervals.

In a preferred embodiment of the present utility model, turf is planted between two adjacent bluestone slabs, and shrubs or trees are planted on the shoulders of both sides of the walkway on the top of the embankment.

Due to adopting the above technical scheme, the beneficial effects of the utility model are:

1. Safe and durable. The soil pressure behind the modified revetment structure wall decreases, the groundwater level behind the wall decreases, the water pressure decreases, the soil slope in front of the wall is more stable, and no large vertical external load is applied to the wall, the overall structure is safer and the structure is protected In place, maintaining the original durability.

2. Beautiful ecological landscape. The water and land exchange channel is opened, and aquatic and terrestrial plants are planted in a large area. The ecological performance is superior, and the external structure and landscape effect are consistent.

3. Pioneering and innovative. The bank revetment reconstruction structure of the utility model is based on the idea of conventional ecological landscape design, integrates the concept of "sponge city", creatively transforms the sponge structure, and the alternative way of combining ecological protection structures such as gabion nets with hard structures is hard bank revetment Retrofit offers new ideas.

4. Environmental protection and energy saving. The revetment reconstruction structure of the utility model makes full use of the waste rocks produced when the retaining wall is removed, and the modified sections all use low-energy-consumption techniques and materials, and there is no energy consumption during operation.

5. Simple and economical. The construction technology of the bank revetment reconstruction structure of the utility model is easy to implement, and the construction is convenient; the selection of materials is also relatively easy to purchase, except for bluestone slabs, the rest of the materials are not high-priced items in landscape and ecological design; the budgeted project cost per linear meter is 4920 Yuan, more economical.

6. Easy maintenance. The bank revetment reconstruction structure of the utility model has good durability, and the maintenance cost is mainly reflected in plant maintenance; the structural materials are also relatively conventional, and the later replacement and repair are also relatively convenient; even if the water filtration system behind the wall fails, it will not cause major damage to the safety and stability of the structure influences.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Figure 1 is a cross-sectional view of the existing mortar block stone gravity revetment.

Fig. 2 is a sectional view of the ecological self-purification type landscape revetment reconstruction structure of the present utility model.

Fig. 3 is a water-facing side elevation of the ecological self-purification landscape revetment reconstruction structure of the utility model.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

Referring to Fig. 2 and Fig. 3, what provides in the figure is a kind of ecological self-cleaning type landscape bank revetment reconstruction structure, comprises front row pile 100, rear row pile 200, is arranged on the top of front row pile 100 and rear row pile 200 and is connected with front row pile 100 and rear row pile 200. The retaining wall bottom plate 300 to which the row of piles 100 and the rear row of piles 200 are fixedly connected and the retaining wall body 400 arranged on the retaining wall bottom plate 300 . The front row of piles 100 and the rear row of piles 200 are C30 reinforced concrete prefabricated square piles. The bottom plate 300 of the retaining wall is made of C30 reinforced concrete.

The wall body 400 of the retaining wall is partially demolished to the design elevation, which is usually 3.0m (about three layers of stone), and the stone materials about 0.6m thick on the retaining side of the wall body 400 with an elevation of 3.0m to 2.4m also need to be removed , to ensure that the width of the top of the wall body 400 of the demolished retaining wall is not less than 0.5m, and the slope of the wall back is consistent with that of the wall body that has not been demolished; the wall body 400 of the wall with an elevation of 3.0m to 2.6m is 400 meters per linear meter Remove a stone. After the wall body of the retaining wall is demolished for 400 degrees, it can ensure that the water and land are connected at a constant water level. When the wall body 400 of the retaining wall is partially demolished, the surface involved shall be smoothed with 1:3 cement mortar to avoid affecting the durability of the wall body 400 of the retaining wall. The stones produced during the demolition of the retaining wall body 400 do not need to be transported outside. After the masonry mortar is removed and cleaned, they can be used as retaining stones for the terrestrial terraces behind the wall. Plants can also grow in the stone crevices, which is compatible with the retaining wall. Body 400 maintains the unity of style, and also makes the boundary outline of each level of plant growth platform appear natural, vivid and interesting.

The top surface of the partially demolished retaining wall body 400 is provided with several drainage grooves 410 at intervals along the extending direction of the retaining wall shoreline, and each drainage groove 410 will be partially demolished. The water-facing side and the soil-retaining side are connected, and the width of the drainage groove 410 is 0.3m.

Considering that the river generally has the functions of flood discharge and drainage, this reconstruction should not reduce the water surface rate, water flow and water storage capacity of the river. Therefore, it is not suitable to change important parameters such as the slope ratio of the soil in front of the wall on a large scale. Therefore, on the ground of the river embankment At least one level of aquatic platform in front of the wall is arranged in front of the water-facing side of the wall body 400 of the retaining wall, and aquatic plants are planted on the aquatic platform in front of each level of wall. no effect. In this embodiment, there are two aquatic platforms in front of the wall, namely the first-level aquatic platform 510 in front of the wall and the second-level aquatic platform 520 in front of the wall, and the design elevation of the first-level aquatic platform 510 in front of the wall is lower than that of the second level The design elevation of the aquatic platform 520 in front of the wall, specifically, the elevation of the aquatic platform 510 in front of the first stage of the wall is 1.8m, and the elevation of the aquatic platform 520 of the second stage in front of the wall is 2.4m. The filling slope of the first-level aquatic platform 510 in front of the wall and the second-level aquatic platform 520 in front of the wall is 1:10, and aquatic plants of different water-resistant depths can be planted. For example, the aquatic plants planted on the aquatic platform 510 in front of the first-level wall are usually aquatic plants with a water-resistant depth of 0.8m to 1m, such as lotus, milkweed, etc.; the aquatic plants planted on the aquatic platform 520 in front of the second-level wall are usually It is an aquatic plant that can tolerate water at a depth of 0.3m to 0.6m, such as Zailihua, Acorus iris, Arrowhead, etc.

The outer edges of the aquatic platform 510 in front of the first-level wall and the aquatic platform 520 in front of the second-level wall adopt close-packed round wooden piles 511, 521 to retain the soil. 0.1m to 0.2m, and the pile lengths of the round wooden piles 511 and 521 are 2m to 3m. In order to make the scenery well-proportioned, in addition to doing some landscape design in terms of aquatic plant types and planting ranges, the round wooden piles 521 set at the outer edge of the aquatic platform 520 in front of the second-level wall are arranged in a wave shape or connected along the river. Or arrange at intervals.

A drainage filter structure 600 is arranged on the retaining side of the partially demolished retaining wall body 400, and the drainage filtering structure 600 consists of prism-shaped Ecological gabion 610 (cross-sectional size 600 * 600mm) and bagged crushed stone filter layer 620 (thick 300mm) constitute.

A top pavement cushion 700 is laid on the top surface of the partially demolished retaining wall body 400 and the drainage filter structure 600. The top pavement cushion 700 is a C30 reinforced concrete prefabricated slab (size 500×100×1600mm) , the top paving cushion layer 700 constitutes a horizontal viewing platform, and the width of the horizontal viewing platform is 1.5m. A number of preservative wood 710 (size 45×120×1600mm) is laid at intervals along the extension direction of the shoreline of the retaining wall on the top pavement cushion 700, and the laying distance between two adjacent pieces of preservative wood 710 is 2cm.

A filter drainage layer 800 connected to the drainage filter structure 600 is laid on the ground behind the partially demolished retaining wall body 400. The filter drainage layer 800 consists of a gravel permeable layer 810 (thickness 300mm) and a gravel permeable layer. Geotextile 820 (dimensions: 300 g/m ² ) on 810 constitutes. The filter drainage layer 800 is used in combination with the drainage filter structure 600 to form a rainwater purification system in which natural rainwater is quickly infiltrated and filtered and discharged to the river through the drainage groove 410 of the partially demolished retaining wall body 400 .

On the filter drainage layer 800, a three-stage wall rear terrace 900 is built at intervals along the slope from bottom to top. The design elevation of the three-stage wall rear land terrace 900 is 3.40m, 3.65m, 3.90m, and each stage The height of the land terrace 900 behind the wall is 0.25m. Terrestrial plants are planted on the terrestrial terrace 900 behind each level of wall, such as small shrubs such as yunnanensis and barberry, and the rest are mainly turf. The land terrace 900 behind the tertiary wall is formed by laying the partially demolished part of the retaining wall body 400 on the filter drainage layer 800 . The width of the land terrace 900 behind the third-level wall gradually increases from high to low, respectively 0.6m, 0.8m, and 1.0m. A number of pedestrian paths (dimensions: 0.3m×0.1m×1m) are arranged at intervals along the extension direction of the shoreline of the retaining wall on the land platform 900 behind the third-level wall. One end of each pedestrian path is located at the top of the embankment, and the other end faces Extend down to the horizontal viewing platform.

A sidewalk 1000 is paved along the extension direction of the retaining wall shoreline on the top of the embankment, and the sidewalk 1000 is composed of several bluestone slabs arranged at even intervals. Grass is planted between two adjacent bluestone slabs, and shrubs or trees are planted on the shoulders of both sides of the walkway on the top of the embankment.

The construction method of the ecological self-purification type landscape revetment reconstruction structure of the present utility model comprises the following steps:

Step 1, build the cofferdam. According to the characteristics of the river course, cofferdams or cofferdams along the river can be used, and the river water between the cofferdams and the shoreline of the proposed retaining wall can be drained;

Step 2, foundation pit excavation. Before excavation of the foundation pit, the groundwater level should be lowered so that the groundwater level is lowered to 0.5m-1m below the excavation surface, and the lower boundary of the sand and gravel permeable layer is used as the excavation slope, and the excavation is carried out layer by layer to the design elevation of 2.4m;

Step 3, partially demolish the retaining wall body 400 to the design elevation, and at the same time properly dispose of the demolished stone materials, and then use 1:3 cement mortar for the surface involved when the retaining wall body 400 is partially demolished. Stone joints are smoothed;

Step 4: Pave the drainage filter structure 600 on the retaining side of the partially demolished retaining wall body 400, that is, mechanically hoist or manually install the prismatic ecological gabion 610 and bagged crushed stone filter layer 620 Pave and install on the retaining side of the partially demolished retaining wall body 400 in turn;

Step 5, laying the filter drainage layer 800 on the ground behind the partially demolished retaining wall body 400, that is, laying the gravel permeable layer 810 and the geotextile 820 layer by layer, and compacting and leveling;

Step 6, backfill the soil behind the partially demolished retaining wall body 400 and lay it to the design elevation of 3.0m, and compact and level it;

Step 7: Lay the top pavement cushion 700 on the top surface of the partially demolished retaining wall and the drainage filter structure by mechanical hoisting or manual laying, and manually lay the top pavement cushion 700 Lay anti-corrosion wood 710 at intervals along the extension direction of the retaining wall shoreline;

Step 9, build the terrestrial terrace 900 on the filter drainage layer 800, build and fill in layers according to the elevations of 3.4m, 3.65m, 3.9m, and 4.2m, firstly build waste stones or permeable bricks, then fill and compact, and then build the upper platform, and then plant terrestrial plants on the terrestrial terrace behind each level of wall;

Step 10, laying a pedestrian walkway 1000 on the top of the embankment, laying bluestone slabs in place by mechanical hoisting or manual laying, forming a pedestrian walkway 1000;

Step 11, on the ground of the river embankment, in front of the water-facing side of the partially demolished retaining wall body 400, set the first-level wall front aquatic platform 510 and the second-level wall front aquatic platform 520, and Close-packed round wooden stakes 511, 521 are set at the outer edge of the aquatic platform 510 in front of the first-level wall and the aquatic platform 520 in front of the second-level wall, and then the aquatic platform 510 in front of the first-level wall and the aquatic platform 520 in front of the second-level wall plant aquatic plants;

Step 12, remove the cofferdam and tidy up the construction site.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (13)

1. a kind of ecological self-purification type landscape revetment reconstruction structure, including preceding campshed, rear campshed, it is arranged on the preceding campshed and heel row The top of stake and the barricade bottom plate affixed with the preceding campshed and rear campshed and the barricade wall being arranged on the barricade bottom plate Body, it is characterised in that the barricade wall body is dismantled to design altitude by local, by the top surface of the barricade wall body after local dismantle If being arranged at intervals with arterial highway drain groove along barricade water front bearing of trend, every one of drain groove is by described by after local dismantle Meet water side and the insertion of earth-retaining side of barricade wall body；Positioned at the side that meets water of the barricade wall body on the ground of bank of river Front be provided with aquatic platform before at least one-level wall, per one-level wall before plant on aquatic platform and be implanted with water plant；It is described by office A trap drainage structure is provided with the earth-retaining side of barricade wall body after portion's forcible entry, in the barricade wall by after local dismantle It is equipped with a top layer on body and the top surface of trap drainage structure to mat formation bed course, top layer bed course of mating formation constitutes a horizontal view and put down Platform；One, which is equipped with, on the barricade wall by after local dismantle ground square after one's death crosses filter drainage layer；Filter drainage layer is crossed described On built terrestrial halfpace after some grades of walls by laying bricks or stones along domatic interval from top to bottom, per one-level wall after on terrestrial halfpace plantation terrestrial plant Thing.

2. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 1, it is characterised in that the barricade wall body is by office Portion surface involved when dismantling carries out floating processing using cement mortar to crack of stone.

3. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 1, it is characterised in that aquatic platform before the wall For two, aquatic platform before aquatic platform, the first order wall before aquatic platform and second level wall respectively before first order wall Design altitude is less than the water planted before the design altitude of aquatic platform before the second level wall, the first order wall on aquatic platform Plant is water plant of the resistance to water depth in 0.8m~1m, and the water plant planted on aquatic platform before the second level wall is Water plant of the resistance to water depth in 0.3m~0.6m.

4. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 3, it is characterised in that water before the first order wall Log pile before life platform and second level wall at the outer rim of aquatic platform using solid matter carries out earth-retaining, and the stake footpath of the log pile is 0.1m~0.2m, a length of 2m~3m of stake of the log pile.

5. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 3, it is characterised in that water before the second level wall The log pile set at the outer rim of life platform connects arrangement or arranged for interval using waveform arrangement or along river Mode is arranged.

6. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 1, it is characterised in that the top layer is mated formation bed course On be equipped with some anticorrosive woods along barricade water front bearing of trend interval.

7. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 1, it is characterised in that the trap drainage structure By the prismatic Ecotypic Stone Mesh-box being successively set on the earth-retaining side of the barricade wall body by after local dismantle and packed rubble mistake Filtering layer is constituted.

8. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 1, it is characterised in that it is described cross filter drainage layer by Sand gravel pervious bed and the geotextiles being arranged on the sand gravel pervious bed are constituted.

9. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 1, it is characterised in that some grades of wall hinterlands The part building stones that raw halfpace is locally dismantled using the barricade wall body are laid on described cross on filter drainage layer and constituted.

10. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 1, it is characterised in that after some grades of walls The width of terrestrial halfpace is from top to bottom gradually increased.

11. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 1, it is characterised in that after some grades of walls Some footpaths are arranged at intervals with along barricade water front bearing of trend on terrestrial halfpace, one end of each footpath is located at levee crown Place, its other end extends downward into the horizontal sightseeing platform.

12. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 1, it is characterised in that along barricade on levee crown Water front bearing of trend is equipped with a pavement, and the bluestone board that the pavement is set by some uniform intervals is constituted.

13. ecological self-purification type landscape revetment reconstruction structure as claimed in claim 12, it is characterised in that two blocks of adjacent green stones Turf Culture between plate, positioned at the both sides dike shoulder plantation shrub of the pavement or arbor on levee crown.