CN112663559B - Slope type ecological seawall structure assembled with grid net and construction method thereof - Google Patents
Slope type ecological seawall structure assembled with grid net and construction method thereof Download PDFInfo
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- CN112663559B CN112663559B CN202011498313.6A CN202011498313A CN112663559B CN 112663559 B CN112663559 B CN 112663559B CN 202011498313 A CN202011498313 A CN 202011498313A CN 112663559 B CN112663559 B CN 112663559B
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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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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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
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The invention provides a slope type ecological seawall structure provided with a grid net and a construction method thereof, and belongs to the field of seawall protection. The novel waterproof wall comprises a wave wall (2), a triangular grid net and a geotechnical net pad (6), wherein the triangular grid net is arranged between the wave wall (2) above a dyke surface (1) and a dyke foot (3), hollow pipes (4) are spliced through sleeves (5) to form a plurality of triangular grid units and are connected into a piece, and the geotechnical net pad (6) is pressed below the triangular grid net. The triangular grid protection net provided by the invention for the seawall slope surface can strengthen the seawall slope, block and slow down the wave impact, form a water supply and drainage network, provide a good inhabitation environment for ecological green planting of the hard seawall surface, and is suitable for strengthening and ecological reconstruction of a hard outer slope structure of a wide seawall.
Description
Technical Field
The invention relates to the field of sea wall protection, in particular to a slope type ecological sea wall structure provided with a grid net and a construction method thereof.
Background
The current seawall slope protection materials in China are mostly stone, concrete, fence plate type and ecological type protection surfaces. The stone facing or concrete can effectively resist wind and wave impact, the stability and strength of the stone facing or concrete meet the short-term wave prevention requirement, but the quality of cast-in-place concrete engineering is difficult to control, for example, concrete grid bars, internal steel bars of the stone facing or concrete are easy to be corroded by seawater to generate cracking damage, the later maintenance and replacement are difficult, the sea wall protection effect is affected, and most of traditional dike facing structures are monotonous, ecological environments are difficult to effectively consider, and the stability cannot be maintained for a long time; conventional ecological slope protection structure can satisfy ecological landscape requirement, but intensity can't ensure flood season and prevent unrestrained flood control safety. Therefore, the rigid structure and the ecological combined breakwater which have comprehensive strength, long-term stability and are convenient to maintain and meet the performance requirements of ecology and the like are the main trend of modern sea embankment engineering research.
Disclosure of Invention
The invention aims to solve the technical problem of the existing seawall, provides a slope type ecological seawall structure with an assembled grid network and a construction method thereof, wherein the slope type ecological seawall structure can achieve the effects of reinforcing a seawall slope and weakening sea waves, and meanwhile achieves the effect of constructing the ecological habitat of the seawall slope.
In order to achieve the above purpose, the invention provides a slope type ecological sea wall structure provided with a grid net, which sequentially comprises a dyke foot, a dyke surface and a road surface from the sea facing side to the inland direction, and further comprises a wave wall, a triangular grid net and a geonet pad, wherein the dyke surface sequentially comprises a dyke surface lower foundation, a geonet pad and a triangular grid net from bottom to top;
The wave wall is arranged at the junction of a road surface and a dyke surface and comprises an arc-shaped panel, a bottom plate and a plurality of water inlet holes, wherein the arc-shaped panel is arranged on the sea facing side above the bottom plate and is fixed, the road surface is paved on the bottom plate, a water drainage groove along the road surface is arranged on the inland side of the arc-shaped panel, and the water inlet holes penetrate through the arc-shaped panel and are close to the bottom plate and are communicated with the water drainage groove;
The triangular grid net is arranged between the breakwater wall and the dike foot above the dike surface and comprises hollow pipes, sleeves and tubular piles, wherein the hollow pipes are spliced through the sleeves to form a plurality of triangular grid units, and the triangular grid units are sequentially connected to the dike foot through the sleeves to be distributed;
the two ends of the hollow tube are respectively provided with a connecting tenon, the hollow tube is divided into a type I hollow tube and a type II hollow tube, the type I hollow tube is arranged at two sides of the triangular grid unit, and the type II hollow tube is arranged at the bottom side of the triangular grid unit;
The sleeve is divided into a type I sleeve, a type II sleeve and a type III sleeve, wherein the type I sleeve is of a regular hexagon structure, each side of the type I sleeve is provided with a pipeline hole, the internal channels of the pipeline holes are communicated with each other, each side of the pipeline holes is welded with a butt joint tenon matched with the connecting tenon of the hollow pipe, the center of the type I sleeve is provided with a pile hole matched with a pipe pile, the pile hole vertically penetrates through the type I sleeve, and the pipe pile is driven into a foundation below a dike surface from the pile hole of the type I sleeve;
The shape of the II-type sleeve is one half of that of a regular hexagon structure, the II-type sleeve comprises complete two sides and a longest side, pipeline holes are respectively arranged on the complete two sides and the longest side, the internal channels of the pipeline holes are communicated with each other, a butt joint tenon matched with the connecting tenon of the hollow pipe is welded outside each pipeline hole on the complete two sides, and the pipeline hole on the longest side is connected with a water inlet hole of the wave wall;
The III-shaped sleeve is one half of a regular hexagon structure, comprises complete two sides and a longest side, wherein each complete two sides is provided with a pipeline hole, each butt joint tenon matched with the connecting tenon of the hollow pipe is welded outside each butt joint tenon, a transverse groove is arranged at the longest side of the III-shaped sleeve, and the grooves are communicated with the outside and mutually communicated with the internal channels of the pipeline holes;
the geotechnical net pad is also in a plurality of continuous triangles, net pad frames are arranged on three sides of the geotechnical net pad, and the net pad frames are pressed below the hollow tubes.
Further, the connecting tenon of the hollow pipe is in an upper semicircular shape which extends out, the port of the hollow pipe is provided with port rubber I in a lower semicircular shape, the port of the connecting tenon is provided with port rubber II in an upper semicircular shape, and the upper part of the connecting tenon is provided with a left-right symmetrical fixed screw hole which does not penetrate through the pipe wall of the hollow pipe;
The inner diameter of the sleeve is consistent with that of the hollow pipe, a lower semicircular butt joint tenon is arranged in a pipeline hole of the sleeve, a rubber ring is arranged on the inner wall of the butt joint tenon, the rubber ring is cylindrical and clings to the inner wall of the butt joint tenon, and a left-right symmetrical positioning screw hole is formed in the lower part of the butt joint tenon;
still include screw and arc connection piece, telescopic butt joint tenon and hollow tube's connection tenon concatenation aligns telescopic location screw and hollow tube's fixed screw through the screw, and fixed sleeve of riveting arc connection piece and hollow tube.
Further, the hollow pipe also comprises a water hole I and a water hole II, wherein the water hole I is arranged at the lower side of the same side at two ends of the I-shaped hollow pipe and is communicated with the internal channel of the I-shaped hollow pipe; the water hole II is arranged on the lower side of the same side of the middle of the II-type hollow tube and is communicated with the internal channel of the II-type hollow tube.
Further, the dyke foot top sets up the concrete rib, be equipped with a plurality of rib water drainage tank on the concrete rib, rib water drainage tank extends to facing the sea side, III telescopic recess and rib water drainage tank intercommunication.
Further, the geotechnical net pad is of a double-layer net structure, and an artificial soil layer rich in plant nutrients is filled between the two layers of nets.
Further, the tubular pile comprises a pile cap and a round pile, and a water-stop rubber ring is sleeved below the pile cap.
Further, a plastic pipe is sleeved in the water inlet of the wave wall and extends outwards to the inside of the pipeline hole at the longest edge of the II-type sleeve.
The invention also provides a construction method of the slope type ecological seawall structure assembled with the grid network, which comprises the following steps:
Firstly, determining a reasonable triangular grid net size according to survey topography, and designing and manufacturing various prefabricated components through the triangular grid net size, wherein the prefabricated components comprise a wave wall unit, a hollow pipe, a sleeve, a geotechnical net pad, a concrete foot protection unit, and connecting sheets, screws and pipe piles matched with the wave wall unit, the hollow pipe, the sleeve, the geotechnical net pad and the concrete foot protection unit; the wave wall units are sequentially connected and fixed to form a wave wall, and the concrete foot protection units are sequentially connected and fixed to form concrete foot protection; one side of each wave wall unit is provided with a mortice, the other side is provided with a tenon matched with the mortice, the midpoint of the bottom of each wave wall unit is provided with a water inlet hole, and exposed steel bars are reserved at the mortice, the tenon and the water inlet hole; the joint of the concrete foot protection unit and the III sleeve is provided with a through hole and exposed reinforcing steel bars are reserved; performing anti-corrosion treatment on the tubular pile;
Continuously excavating earthwork at the top of the dyke surface according to the drawing requirement until the foundation pit is formed; the foundation pit excavation comprises a wave wall foundation pit at a dyke top pavement and a concrete foot protection foundation pit at a dyke foot; digging to the designed depth, paving a geomembrane for seepage prevention treatment, filling a bedding layer and compacting;
Thirdly, aligning mortises or tenons on the side edges of the wave wall units, and sequentially hoisting the wave wall units to be placed on a reserved foundation pit on the top of the dyke surface; the wave wall assembly mode is as follows: sequentially butting mortises at the side edges of the wave wall units with tenons of the next wave wall unit, binding exposed steel bars at two sides of the wave wall units by adopting stressed bars, then pouring concrete on site, filling exposed steel bars of the wave wall units for connection and fixation, and finishing backfilling of a foundation pit; plastic pipes with proper sizes are placed in the water inlet holes at the bottom of the wave wall;
paving a road surface on the bottom plate of the wave wall, and arranging drainage grooves along the trend of the road surface on the inland side of the arc-shaped panel;
step five, flattening the dike surface, arranging a triangular grid net between the wave wall and the dike foot, wherein the installation of the triangular grid net comprises four stages:
the first stage: lifting a II-type sleeve, placing the II-type sleeve on the top of a dike surface and tightly attaching the II-type sleeve to the midpoint of the wave wall unit, wherein a plastic pipe extends outwards into the II-type sleeve, welding reserved steel bars at the bottoms of the II-type sleeve and the wave wall unit through steel bars, filling and covering cast-in-place concrete, and connecting and fixing the II-type sleeve and the wave wall unit;
And a second stage: hoisting the I-shaped sleeve, placing the I-shaped sleeve below the II-shaped sleeve on the dike surface, reserving a hollow tube assembly space between the I-shaped sleeve and the II-shaped sleeve, wherein positioning measurement is required in the process, the precision is ensured, and after positioning is finished, a wedge-shaped wood block is adopted to temporarily keep the I-shaped sleeve stable;
And a third stage: a geotechnical net pad is flatly paved on the dike surface 1, the placed I-shaped sleeve is used as a locating point, and three vertexes of a frame of the net pad are aligned with the I-shaped sleeve;
Fourth stage: aligning the connecting tenons at two ends of the hollow pipe and the butt joint tenons around the sleeve, hoisting the I-shaped hollow pipe to be placed at two sides of the triangular grid unit, hoisting the II-shaped hollow pipe to be placed at the bottom edge of the triangular grid unit, and pressing the bottom of the hollow pipe on the frame of the net pad;
Two points are noted during installation: first point: the water holes I of the I-shaped hollow pipe face the outer side of the triangular grid unit, the water holes II of the II-shaped hollow pipe face the inner side of the triangular grid unit, and the triangular grid unit in front of the concrete toe guard is not provided with the II-shaped hollow pipe;
Second point: the initial triangular grid unit of the triangular grid net is arranged at one end of the wave wall unit, the upper end of the hollow pipe is connected with the II-type sleeve, the lower end of the hollow pipe is connected with the I-type sleeve, the fixing screw holes of the hollow pipe and the positioning screw holes of the sleeve are respectively riveted through the arc-shaped connecting pieces by screws, the hollow pipe and the sleeve are fixed, and the operation is repeated;
the triangular grid units in the middle of the triangular grid net are installed, the upper end of the hollow tube is connected with the upper I-shaped sleeve, the lower end of the hollow tube is connected with the lower I-shaped sleeve, the fixing screw holes of the hollow tube and the positioning screw holes of the sleeve are respectively riveted through the arc-shaped connecting pieces by screws, the sleeve and the hollow tube are fixed, and the operation is repeated;
The tail end triangular grid units of the triangular grid net are arranged at one end of the concrete guard leg, the upper end of the hollow pipe is connected with the I-shaped sleeve, the lower end of the hollow pipe is connected with the III-shaped sleeve, the fixing screw holes of the hollow pipe and the positioning screw holes of the sleeve are respectively riveted through the arc-shaped connecting pieces by screws, the hollow pipe and the sleeve are fixed, and the operation is repeated;
Fifth stage: hoisting the tubular pile, driving a water-stopping rubber ring on the circular pile sleeve into a foundation below the dike surface through a pile hole in the center of the I-shaped sleeve until the pile cap is tightly attached to the sleeve, and finishing the fixation of the I-shaped sleeve;
Step six, hoisting the concrete foot protection unit to be placed in a foundation pit at the foot of the embankment, welding the exposed steel bars reserved at the through holes of the III-type sleeve and the concrete foot protection by adopting steel bars, filling and covering cast-in-place concrete, cutting slurry and stone in the through holes of the concrete foot protection, plastering cement, and forming foot protection drainage grooves, so that the grooves of the III-type sleeve are communicated with the foot protection drainage grooves.
Step three is needed to be immediately carried out after the step two is completed; and fifthly, when a triangular grid net is arranged between the wave wall and the embankment, the sleeve positioning is timely adjusted, and the triangular grid net is continuously assembled by taking the triangular grid units as units.
Advantageous effects
The invention provides a slope type ecological seawall structure assembled into an assembled grid net through precast concrete members and a construction method thereof, and solves the problem of the existing seawall structure. According to the invention, the triangular grid net is assembled by the I-shaped sleeve and the hollow tube, the grid net nodes are fixed by the tubular piles, meanwhile, the embankment slope is anchored, the top of the triangular grid is connected with the wave wall by the II-shaped sleeve, the bottom of the triangular grid is connected with the concrete guard leg by the III-shaped sleeve, and the triangular grid protection net with one surface embedded and fixed on the embankment slope is constructed, so that the comprehensive protection strength and long-term stability of the embankment are effectively improved;
The invention fixes the soil pad and soil layer inside the triangular grid, and provides a stable inhabiting environment for ecological green planting; the water accumulated on the road surface at the top of the dike and the slope of the dike can be effectively removed through the internal channels of the triangular grids and the drain holes on the surface of the triangular grids, so that excessive water in the area of the dike is prevented from penetrating into the dike body or affecting vegetation, in addition, the water in the area of the dike is too little, and the water stored in the triangular grids is evaporated through the water holes to escape and is fed back to green plants, so that good water environment and ecological environment are provided for vegetation on the dike;
the prefabricated concrete hollow pipe, the sleeve and the tubular pile are used for reinforcing the seawall and weakening sea wave impact, the prefabricated concrete hollow pipe and the sleeve are suitable for the existing seawall slope, the quality of the components can be effectively guaranteed by the assembled components, the construction efficiency is improved, meanwhile, damaged components are convenient to replace, the subsequent maintenance is facilitated, and the safety and reliability of seawall protection are improved.
Drawings
Fig. 1 is a schematic perspective view of a slope type ecological seawall structure equipped with a grid mesh according to the present invention;
FIG. 2 is a schematic view of the structure of the blast wall of FIG. 1;
FIG. 3 is a schematic view of the hollow tube of FIG. 1;
FIG. 4 is a schematic view of the configuration of the type I sleeve of FIG. 1;
FIG. 5 is a schematic view of the type II sleeve of FIG. 1;
FIG. 6 is a schematic view of the type II sleeve of FIG. 1 connected to a bank top wave wall;
FIG. 7 is a schematic view of the type III sleeve of FIG. 1;
FIG. 8 is a schematic cross-sectional view of the sleeve I and tube stake of FIG. 1 in use;
FIG. 9 is a schematic illustration of the connection of the type I sleeve of FIG. 1 to a hollow tube;
FIG. 10 is a schematic view of the structure of the geonet pad of FIG. 1;
FIG. 11 is a schematic illustration of the direction of water flow in the triangular grid of FIG. 1;
In the figure: dyke surface 1, drainage groove 11, road surface 12,
Wave wall 2, tenon 21, mortise 22, arc panel 24, bottom plate 25, water inlet 26, plastic tube 261,
A dike foot 3, a concrete foot guard 31, a foot guard drain groove 32,
Hollow tube 4, I-type hollow tube 41, II-type hollow tube 42, water hole I421, water hole II 422, connecting tenon 44, port rubber I441, port rubber II 442, fixing screw hole 45, connecting piece 46, screw 47,
Sleeve 5, type I sleeve 51, type II sleeve 511, type III sleeve 512, positioning screw hole 52, butt joint tenon 53, pipe hole 531, groove 532, rubber ring 54, pile hole 55, pipe pile 56, pile cap 561, round pile 562, concrete wall 563, water stop rubber ring 564,
Geonet 6, net frame 61.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to examples and drawings. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
As shown in fig. 1, a slope type ecological seawall structure assembled with a grid net sequentially comprises a seawall foot 3, a seawall surface 1 and a road surface 12 from the sea facing side to the inland side.
Fig. 2 is a schematic structural view of the wave wall 2 in fig. 1, where the wave wall 2 is disposed at a junction between the road surface 12 and the dike surface 1, and includes an arc-shaped panel 24, a bottom plate 25 and a plurality of water inlet holes 26, where the arc-shaped panel 24 is disposed on a sea facing side above the bottom plate 25 and is fixed, and the arc of the arc-shaped panel conforms to the national wave wall standard and is bent to the sea facing side. Preferably, the blast wall 2 is an integral member of arcuate panels 24 and a bottom panel 25. Preferably, the water inlet 26 of the blast wall 2 is disposed at the midpoint of the bottom of the blast wall 2.
The road surface 12 is laid on the bottom plate 25 of the blast wall 2, and the drainage groove 11 running along the road surface 12 is provided on the inland side of the arc-shaped panel 24. When the road surface 12 is laid, the road surface is slightly inclined to the drainage groove 11, so that accumulated water flows to the drainage groove 11. The water inlet 26 of the blast wall 2 penetrates the arc-shaped panel 24 and is arranged close to the bottom plate 25 and is communicated with the water discharge tank 11.
The dyke surface 1 sequentially comprises a foundation below the dyke surface 1, a geotechnical net pad 6 and a triangular grid net from bottom to top, as shown in fig. 1. The triangular grid net is arranged between the wave wall 2 above the dike face 1 and the concrete guard feet 31 of the dike feet 3, and comprises a hollow tube 4, a sleeve 5 and a tubular pile 56. The hollow tubes 4 are spliced through the sleeves 5 to form a plurality of triangular grid units, and the triangular grid units are sequentially connected into pieces through the sleeves 5 to form a triangular grid network.
Fig. 3 is a schematic structural view of the hollow tube 4 in fig. 1, the hollow tube 4 is divided into a type i hollow tube 41 and a type ii hollow tube 42, the type i hollow tube 41 is disposed at both sides of the triangular grid unit, and the type ii hollow tube 42 is disposed at the bottom side of the triangular grid unit. For convenience of construction, the hollow tube 41 of type I and the hollow tube 42 of type II are all equal in length, and form an equilateral triangular grid unit. Specifically, each of the two ends of the hollow tube 4 is provided with a connecting tenon 44, the connecting tenon 44 of the hollow tube 4 is in an upper semicircular shape extending out, the port of the hollow tube 4 is provided with a port rubber I441 in a lower semicircular shape, the port of the connecting tenon 44 is provided with a port rubber II 442 in an upper semicircular shape, and the port rubber I441 and the port rubber II 442 can increase sealing tightness. The upper part of the connecting tenon 44 is also provided with a left-right symmetrical fixed screw hole 45 which does not penetrate through the wall of the hollow tube 4. Generally, the inner diameter of the sleeve 5 corresponds to the inner diameter of the hollow tube 4, and the cross section of the internal passage of the hollow tube 4 is generally circular.
The sleeve 5 is divided into a type i sleeve 51, a type ii sleeve 511 and a type iii sleeve 512, as shown in fig. 4 to 9.
Specifically, fig. 4 is a schematic structural diagram of the i-shaped sleeve 51 in fig. 1, where the i-shaped sleeve 51 has a regular hexagonal structure, each side of the i-shaped sleeve is provided with a pipe hole 531, and internal channels of the pipe holes 531 are mutually communicated and are provided with a butt joint tenon 53 matched with the connection tenon 44 of the hollow pipe 4. The outer welding of the pipeline hole 531 of sleeve 5 is docked tenon 53, and the butt joint tenon 53 is the semicircle shape down, the inner wall of butt joint tenon 53 sets up rubber circle 54, rubber circle 54 is cylindricly, hugs closely the inner wall of butt joint tenon 53, butt joint tenon 53 lower part is equipped with bilateral symmetry's locating screw hole 52. The butt joint tenon 53 of the sleeve 5 is spliced with the connecting tenon 44 of the hollow tube 4, the positioning screw hole 52 of the sleeve 5 is aligned with the fixing screw hole 45 of the hollow tube 4 through the screw 47, and the riveting arc-shaped connecting sheet 46 is used for fixing the I-shaped sleeve 51 and the hollow tube 4. As shown in fig. 9, a schematic view of the connection of the type i sleeve 51 to the hollow tube 4 in fig. 1 is shown.
The tubular pile 56 comprises a pile cap 561 and a round pile 562, a pile hole 55 matched with the tubular pile 56 is arranged in the center of the I-shaped sleeve 51, the pile hole 55 vertically penetrates through the I-shaped sleeve 51 and is provided with a concrete wall 563 for wrapping the reserved pile hole 55, the pile hole 55 is not communicated with the pipeline hole 531 due to the existence of the concrete wall 563, and water in a pipeline hole 531 channel inside the I-shaped sleeve 51 is prevented from penetrating into the dike along the round pile 562. The round piles 562 are driven into the foundation below the dike face 1 through the pile holes 55 at the hexagonal center of the i-shaped sleeve 51 until the pile caps 561 are tightly attached to the sleeve 5, and the round piles 562 anchor the dike slope. To prevent the infiltration of external water, a water stop rubber ring 564 is often sleeved under the pile cap 561. The pile cap 561 also serves to attenuate sea waves. Fig. 8 is a schematic cross-sectional view of the use state of the i-type sleeve and the pipe pile in fig. 1. Typically, the cap 561 and the stake 562 are an integral component.
Fig. 5 is a schematic structural view of the ii-type sleeve 511 in fig. 1, where the shape of the ii-type sleeve 511 is one half of that of a regular hexagon structure, and includes two complete sides and a longest side, and two complete sides and the longest side are respectively provided with a pipe hole 531, the internal channels of the pipe holes 531 are mutually communicated, and a butt joint tenon 53 matched with the connection tenon 44 of the hollow pipe 4 is welded on each outer side of the pipe hole 531 on the complete side, and the pipe hole 531 on the longest side is connected with the water inlet hole 26 of the wave wall 2, as shown in fig. 6, and is a schematic structural view of connection of the ii-type sleeve 511 and the wave wall 2 on the top of the dike in fig. 1. The plastic pipe 261 is sleeved in the water inlet hole 26 of the wave wall 2, and the plastic pipe 261 extends outwards to the inside of the pipeline hole 531 at the longest edge of the II-shaped sleeve 511.
Fig. 7 is a schematic structural diagram of the type iii sleeve 512 in fig. 1, where the shape of the type iii sleeve 512 is one half of a regular hexagon structure, and the type iii sleeve includes two complete sides and a longest side, where each complete side is provided with a pipe hole 531, and each butt joint tenon 53 matched with the connection tenon 44 of the hollow pipe 4 is welded to the outside, and a transverse semicircular groove 532 is disposed at the longest side, and the groove 532 is communicated with the outside and is mutually communicated with the internal channel of the pipe hole 531.
It can be seen that the present invention is provided with the ii-type sleeve 511 connected to the lower portion of the wave wall 2 as the starting point of the triangular grid; the III-type sleeve 512 is connected with the concrete guard feet 31 at the embankment feet 3 and is used as the end point of the triangular grid network; the I-shaped sleeve 51 is used as a positioning point of a key node of the triangular grid net, a triangular grid net with one surface embedded and fixed on a sea wall slope is constructed, each positioning node of the triangular grid net is fixed through the tubular pile 56, the sea wall slope is anchored, sea wave impact is blocked and slowed down, and the comprehensive sea wall protection strength and long-term stability are effectively improved.
And a geotechnical net cushion 6 is arranged between the triangular grid net and the foundation below the dyke surface 1, and the geotechnical net cushion 6 is integrally fixed inside the triangular grid net. The geotechnical net pad 6 is a double-layer net structure, which is made of corrosion-resistant polymer material PE, and an artificial soil layer rich in plant nutrients is filled between the two layers of net. In order to match with the triangular grid net units, the geotechnical net pad 6 is also made into a plurality of continuous triangles, net pad frames 61 are arranged on three sides of the geotechnical net pad, the net pad frames 61 are of a corrosion-resistant textile fabric structure, and the soft textile fabric is used as flexible textile fabric to provide buffer sealing effect for the hard dyke surface 1 and the rigid concrete prefabricated hollow tube 4. As shown in fig. 10, three vertexes of the net pad frame 61 are aligned with the sleeve 5 and pressed under the hollow pipe 4 so as to lay the hollow pipe 4, thereby providing a stable ecological space for the artificial soil layer inside the geotechnical net pad 6.
The dyke 3 is a stone-laid structure, in order to avoid adverse factors such as wave, the dyke 3 top sets up concrete foot protector 31, be equipped with a plurality of foot protector water drainage tank 32 on the concrete foot protector 31, foot protector water drainage tank 32 extends to facing the sea side, the recess 532 of III type sleeve 512 is connected with foot protector water drainage tank 32, simultaneously because the recess 532 of III type sleeve 512 is open, communicates with each other with the external world, can collect ponding before the concrete foot protector 31, and the rethread foot protector water drainage tank 32 is with whole ponding to the sea.
Preferably, one or more of the wave wall 2, the hollow tube 4, the sleeve 5, the geotechnical mat 6, the concrete toe guard 31 are prefabricated components. In addition, the shape of the connection tenon 44 of the hollow tube 4 and the abutment tenon 53 of the sleeve 5 is not limited to a protruding semicircle, but the protruding semicircle is designed with the simplest pattern and manufacture.
In order to provide a stable habitat for ecological green plants, water holes I421 are formed in the lower sides of the same sides of the two ends of the I-shaped hollow tube 41 and are communicated with the internal channels of the I-shaped hollow tube 41, and water holes II 422 are formed in the lower sides of the same sides of the middle of the II-shaped hollow tube 42. The number of the water holes I421 and the water holes II 422 is not limited, and the number is increased or decreased according to actual conditions. Preferably, a water hole I421 is provided at each end of the type I hollow tube 41, and two water holes II 422 are provided in the middle of the type II hollow tube 42.
Fig. 11 is a schematic view of the direction of water flow in the triangular grid of fig. 1. During installation, the I-shaped hollow pipes 41 are installed on two sides of the triangular grid unit, water holes I421 of the I-shaped hollow pipes are outwards, the II-shaped hollow pipes 42 are installed on the bottom edge of the triangular grid unit, water holes II 422 of the II-shaped hollow pipes are inwards, the I-shaped hollow pipes are sequentially arranged towards the direction of the dike foot 3 through connection of various sleeves 5, and the triangular grid unit without the II-shaped hollow pipes 42 is formed in front of the concrete foot protection 31. In the installation process, the inner wall of the rubber ring 54 is tightly attached to the semicircular butt joint rabbet 53 of the sleeve 5, and the semicircular butt joint rabbet and the port rubber I441 and the port rubber II 442 of the hollow tube 4 jointly play a role in buffering and sealing a rigid concrete connection point.
When sea waves rush up, accumulated water on the road surface 12 of the dyke top is collected to the drainage tank 11 and enters the circular pipeline hole 531 at the longest side of the II-type sleeve 511 through the plastic pipe 261 in the water inlet hole 26 of the wave wall 2. The accumulated water flows downwards through the triangular grid net, and forms a stable water delivery flow passage through the pipeline hole 531 of the sleeve 5, the inner wall of the rubber ring 54 and the hollow pipe 4 until the accumulated water is discharged to the sea surface through the foot protection water discharge groove 32; meanwhile, the accumulated water in the triangular grid can be discharged from the included angle formed between two adjacent triangular grid units, and can also be accumulated water from the bottom edges of the triangular grid units, the open grooves 532 of the III-type sleeves 512 are communicated with the outside before the concrete feet 31, the accumulated water before the concrete feet 31 is collected, and the residual accumulated water can be discharged to the sea surface through the foot protection water discharge grooves 32, so that a water supply and discharge network is formed.
The water holes I421 of the I-type hollow pipe 41 and the water holes II 422 of the II-type hollow pipe 42 are positioned above the net pad frame 61, so that the blocking of holes by soil is avoided, and the unnecessary water flow above a discharged soil layer is not influenced. The water accumulation on the road surface of the dike top and the slope of the dike surface can be effectively removed through the arrangement of the internal channels of the triangular grid network and the water holes I421 and the water holes II 422 on the surfaces of the internal channels of the triangular grid network, so that excessive water on the dike surface is prevented from penetrating into the dike body or affecting vegetation, in addition, the water stored in the triangular grid network is evaporated and escapes through the water holes I421 and the water holes II 422 to be fed back to green plants, and good water environment and ecological environment are provided for the vegetation on the dike surface;
The construction method of the slope type ecological seawall structure assembled with the grid net comprises the following construction contents:
Step one, determining reasonable triangular grid mesh size according to survey topography, and designing and manufacturing various prefabricated components through the triangular grid mesh size, wherein the prefabricated components comprise a wave wall unit, a hollow pipe 4, a sleeve 5, a geotechnical net pad 6, a concrete foot protection unit, and connecting sheets 46, screws 47, pipe piles 56 and the like matched with the wave wall unit. The wave wall units are sequentially connected and fixed to form a wave wall 2, and the concrete leg protecting units are sequentially connected and fixed to form concrete leg protecting 31. The side of each wave wall unit is provided with a mortice 22, the other side is provided with a tenon 21 matched with the mortice 22, a water inlet 26 is arranged at the midpoint of the bottom of each wave wall unit, and exposed steel bars are reserved at the mortice 22, the tenon 21 and the water inlet 26. The connection of the concrete toe guard unit and the iii-type sleeve 512 is provided with a through hole and exposed reinforcing steel bars are reserved. The pipe piles 56 are subjected to corrosion-preventing treatment.
And step two, continuously excavating earthwork at the top of the dyke surface 1 according to the drawing requirement until the foundation pit is formed. The foundation pit excavation comprises a wave wall 2 foundation pit at a dyke top pavement 12 and a concrete foot protection 31 foundation pit at a dyke foot 3. And (5) paving a geomembrane for seepage prevention treatment after excavating to a designed depth, filling a bedding layer and compacting. And when the slope is unstable, the slope gradient is slowed down or a support is arranged.
Thirdly, aligning mortises 22 or tenons 21 on the side edges of the wave wall units, and sequentially hoisting the wave wall units to be placed on the reserved foundation pit on the top of the dyke surface 1. The wave wall 2 is assembled in the following way: sequentially butting mortises 22 on the side edges of the wave wall units with tenons 21 of the next wave wall unit, binding exposed steel bars on the two sides of the wave wall units by adopting stressed bars, then pouring concrete on site, filling exposed steel bars of the wave wall 2 for connection and fixation, completing foundation pit backfilling, tamping backfilling once according to 200mm of backfilling, and ensuring that the physical parameters of the tamped backfilling meet design requirements; plastic tubes 261 of a suitable size are placed in the bottom inlet openings 26 of the blast wall 2.
And fourthly, paving the pavement 12 on the bottom plate 25 of the wave wall 2, and arranging drainage grooves 11 along the pavement 12 on the inland side of the arc-shaped panel 24. When the road surface 12 is laid, the road surface is slightly inclined to the drainage groove 11, so that accumulated water flows to the drainage groove 11.
Step five, arranging a triangular grid net between the wave wall 2 and the embankment 3, wherein the installation of the triangular grid net comprises four stages:
the first stage: lifting a II-type sleeve 511, placing the II-type sleeve 511 at the top of the dike surface 1 and clinging to the midpoint of the wave wall unit, wherein a plastic pipe 261 extends outwards into the II-type sleeve 511, welding reserved steel bars at the bottoms of the II-type sleeve 511 and the wave wall unit through steel bars, filling and covering cast-in-place concrete, and connecting and fixing the II-type sleeve 511 and the wave wall unit;
and a second stage: hoisting the I-shaped sleeve 51, placing the I-shaped sleeve 51 below the II-shaped sleeve 511 on the dike surface 1, reserving a hollow tube 4 assembly space between the I-shaped sleeve and the II-shaped sleeve, wherein positioning measurement is required in the process, the precision is ensured, and after positioning is finished, a wedge-shaped wood block is adopted to temporarily keep the I-shaped sleeve 51 stable;
And a third stage: a geotechnical net pad 6 is flatly paved on the dike surface 1, the placed I-shaped sleeve 51 is used as a locating point, and three vertexes of a net pad frame 61 are aligned with the I-shaped sleeve 51; the process keeps the artificial soil layer in the geotechnical net pad 6 smooth, sprays a layer of green planting base material rich in seeds on the surface of the artificial soil layer, covers non-woven fabrics to avoid seed washout, keeps heat and moisture, and promotes germination and growth of grass seeds;
fourth stage: the upper semicircular connecting tenons 44 at the two ends of the hollow tube 4 are aligned with the butt joint tenons 53 around the sleeve 5, the lifting I-shaped hollow tube 41 is placed at the two sides of the triangular grid unit, the lifting II-shaped hollow tube 42 is placed at the bottom edge of the triangular grid unit, and the bottom of the hollow tube 4 is pressed on the net pad frame 61.
Two points are noted during installation: first point: the I-shaped hollow pipes 41 are arranged on two sides of the triangular grid unit, water holes I421 of the I-shaped hollow pipes are outwards arranged, the II-shaped hollow pipes 42 are arranged on the bottom edge of the triangular grid unit, water holes II 422 of the II-shaped hollow pipes are inwards arranged, the II-shaped hollow pipes are connected through various sleeves 5 to be sequentially distributed towards the direction of the dike foot 3, and the triangular grid unit without the II-shaped hollow pipes 42 is formed in front of the concrete foot protector 31;
Second point: the initial triangular grid unit of the triangular grid net is arranged at one end of the wave wall unit, the upper end of the hollow tube 4 is connected with the II-type sleeve 511, the lower end of the hollow tube 4 is connected with the I-type sleeve 51, the fixing screw holes 45 of the hollow tube 4 and the positioning screw holes 52 of the sleeve 5 are respectively riveted through the arc-shaped connecting pieces 46 by screws 47, the hollow tube 4 and the sleeve 5 are fixed, and the operation is repeated;
The triangular grid units in the middle of the triangular grid net are installed, the upper end of the hollow tube 4 is connected with the upper I-shaped sleeve 51, the lower end of the hollow tube 4 is connected with the lower I-shaped sleeve 51, the fixing screw holes 45 of the hollow tube 4 and the positioning screw holes 52 of the sleeve 5 are respectively riveted through the arc-shaped connecting pieces 46 by bolts 47, the sleeve 5 and the hollow tube 4 are fixed, and the operation is repeated;
The triangular grid units at the tail end of the triangular grid net are arranged at one end of the concrete guard leg 31, the upper end of the hollow tube 4 is connected with the I-shaped sleeve 51, the lower end of the hollow tube 4 is connected with the III-shaped sleeve 512, the fixing screw holes 45 of the hollow tube 4 and the positioning screw holes 52 of the sleeve 5 are respectively riveted through the arc-shaped connecting pieces 46 by screws 47, the hollow tube 4 and the sleeve 5 are fixed, and the operation is repeated;
Third point: step three is needed to be immediately carried out after the step two is completed;
Fourth point: and fifthly, when a triangular grid net is arranged between the wave wall 2 and the embankment 3, the sleeve 5 is timely adjusted to be positioned, and the triangular grid net is continuously assembled by taking the triangular grid units as units.
Fifth stage: and hoisting the tubular pile 56, sleeving a water-stopping rubber ring 564 on the circular pile 562, driving the circular pile 562 into the foundation below the dike surface 1 through the pile hole 55 at the hexagonal center of the I-shaped sleeve 51 until the pile cap 561 is tightly attached to the sleeve 5, and anchoring the dike slope by the circular pile 562 to finish the fixation of the I-shaped sleeve 51. If necessary, it is necessary to check whether each tube stake 56 is installed in place to secure the respective positioning nodes of the triangular grid. The pile cap 561 also serves to attenuate sea waves.
Step six, hoisting the concrete foot protection unit to be placed in the foundation pit at the position of the embankment foot 3, welding the exposed steel bars reserved at the through holes of the III-shaped sleeve 512 and the concrete foot protection 31 by steel bars, filling and covering cast-in-place concrete, cutting slurry and stone at the position of the through holes of the concrete foot protection 31, plastering cement, forming the foot protection drainage groove 32, and communicating the groove 532 of the III-shaped sleeve 512 with the foot protection drainage groove 32. Meanwhile, the groove 532 of the III-shaped sleeve 512 is open and communicated with the outside, so that accumulated water in front of the concrete toe guard 31 can be collected, and then the accumulated water is discharged to the sea surface through the toe guard drain groove 32.
The invention relates to a construction method of a slope type ecological seawall structure for assembling a grid net, which is assembled sequentially according to the working procedures. The prefabricated concrete hollow pipe, the sleeve and the tubular pile are used for reinforcing the seawall and weakening sea wave impact, the prefabricated concrete hollow pipe and the sleeve are suitable for the existing seawall slope, the quality of the components can be effectively guaranteed by the assembled components, the construction efficiency is improved, meanwhile, damaged components are convenient to replace, the subsequent maintenance is facilitated, and the safety and reliability of seawall protection are improved.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The utility model provides an assembly grid net's slope ecological seawall structure, its by face sea side direction inland direction includes dyke foot (3), dyke face (1) and road surface (12) in proper order, its characterized in that:
The dam comprises a dam surface (1), a foundation below the dam surface (1), a triangular grid net and a geotechnical grid net pad (6), wherein the foundation, the geotechnical grid net pad (6) and the triangular grid net are sequentially arranged on the dam surface (1) from bottom to top;
the wave wall (2) is arranged at the junction of a road surface (12) and a dyke surface (1), and comprises an arc-shaped panel (24), a bottom plate (25) and a plurality of water inlet holes (26), wherein the arc-shaped panel (24) is arranged on the sea facing side above the bottom plate (25) and is fixed, the road surface (12) is paved on the bottom plate (25), a water drainage groove (11) along the trend of the road surface (12) is arranged on the inland side of the arc-shaped panel (24), and the water inlet holes (26) penetrate through the arc-shaped panel (24) and are close to the bottom plate (25) to be communicated with the water drainage groove (11);
The triangular grid net is arranged between a wave wall (2) above a dike surface (1) and dike feet (3), and comprises a hollow pipe (4), a sleeve (5) and tubular piles (56), wherein the hollow pipe (4) is spliced through the sleeve (5) to form a plurality of triangular grid units, and the triangular grid units are sequentially connected to the dike feet (3) through the sleeve (5) for arrangement;
The two ends of the hollow tube (4) are respectively provided with a connecting tenon (44), the hollow tube (4) is divided into a type I hollow tube (41) and a type II hollow tube (42), the type I hollow tube (41) is arranged at two sides of the triangular grid unit, and the type II hollow tube (42) is arranged at the bottom side of the triangular grid unit;
The sleeve (5) is divided into a type I sleeve (51), a type II sleeve (511) and a type III sleeve (512), the type I sleeve (51) is of a regular hexagon structure, each side of the sleeve is provided with a pipeline hole (531), the internal channels of the pipeline holes (531) are mutually communicated, each butt joint tenon (53) matched with the connecting tenons (44) of the hollow tubes (4) is welded outside each butt joint tenon, a pile hole (55) matched with a pipe pile (56) is arranged in the center of the type I sleeve (51), the pile hole (55) vertically penetrates through the type I sleeve (51), and the pipe pile (56) is driven into a foundation below the dike face (1) from the pile hole (55) of the type I sleeve (51);
The shape of the II-type sleeve (511) is one half of a regular hexagon structure, the II-type sleeve comprises complete two sides and a longest side, each of the complete two sides and the longest side is provided with a pipeline hole (531), the internal channels of the pipeline holes (531) are communicated with each other, each outer part of the pipeline holes (531) on the complete two sides is welded with a butt joint tenon (53) matched with a connection tenon (44) of the hollow pipe (4), and the pipeline holes (531) on the longest side are connected with a water inlet hole (26) of the wave wall (2);
The III-shaped sleeve (512) is one half of a regular hexagon structure, comprises complete two sides and a longest side, wherein the complete two sides are respectively provided with a pipeline hole (531), butt joint tenons (53) matched with the connection tenons (44) of the hollow pipes (4) are welded outside the pipe, transverse grooves (532) are formed in the longest side of the pipe, and the grooves (532) are communicated with the outside and mutually communicated with internal channels of the pipeline holes (531);
The geotechnical net pad (6) is also in a plurality of continuous triangles, net pad frames (61) are arranged on three sides of the geotechnical net pad, the net pad frames (61) are pressed below the hollow pipe (4), connecting tenons (44) of the hollow pipe (4) are in an upper semicircular shape extending out, ports of the hollow pipe (4) are provided with port rubber I (441) in a lower semicircular shape, ports of the connecting tenons (44) are provided with port rubber II (442) in an upper semicircular shape, and fixing screw holes (45) which are symmetrical left and right and do not penetrate through the pipe wall of the hollow pipe (4) are formed in the upper parts of the connecting tenons (44);
The inner diameter of the sleeve (5) is consistent with the inner diameter of the hollow pipe (4), a pipeline hole (531) of the sleeve (5) is provided with a butt joint tenon (53) in a lower semicircular shape, the inner wall of the butt joint tenon (53) is provided with a rubber ring (54), the rubber ring (54) is cylindrical and clings to the inner wall of the butt joint tenon (53), and the lower part of the butt joint tenon (53) is provided with a left-right symmetrical positioning screw hole (52);
The connecting tenon (53) of the sleeve (5) is spliced with the connecting tenon (44) of the hollow tube (4), the positioning screw hole (52) of the sleeve (5) and the fixing screw hole (45) of the hollow tube (4) are aligned through the screw (47), and the sleeve (5) and the hollow tube (4) are fixed through the riveting arc connecting piece (46); the concrete foot protector is characterized in that a concrete foot protector (31) is arranged above the embankment foot (3), a plurality of foot protector drainage grooves (32) are formed in the concrete foot protector (31), the foot protector drainage grooves (32) extend towards the sea side, and grooves (532) of the III-shaped sleeve (512) are communicated with the foot protector drainage grooves (32).
2. A sloped ecological seawall structure according to claim 1, characterized in that: the water hole I (421) is arranged at the lower side of the same side at two ends of the I-shaped hollow tube (41) and is communicated with the internal channel of the I-shaped hollow tube (41); the water hole II (422) is arranged at the lower side of the same side of the middle of the II-type hollow tube (42) and is communicated with the internal channel of the II-type hollow tube (42).
3. A sloped ecological seawall structure according to any one of claims 1 to 2, characterized in that: the geotechnical net pad (6) is of a double-layer net structure, and an artificial soil layer rich in plant nutrients is filled between the two layers of nets.
4. A sloped ecological seawall structure according to any one of claims 1 to 2, characterized in that: the tubular pile (56) comprises a pile cap (561) and a circular pile (562), and a water-stop rubber ring (564) is sleeved below the pile cap (561).
5. A sloped ecological seawall structure according to any one of claims 1 to 2, characterized in that: a plastic pipe (261) is sleeved in the water inlet hole (26) of the wave wall (2), and the plastic pipe (261) extends outwards to the inside of a pipeline hole (531) at the longest side of the II-type sleeve (511).
6. A construction method of a slope type ecological seawall structure assembled with a grid net comprises the following steps:
Firstly, determining a reasonable triangular grid mesh size according to survey topography, and designing and manufacturing various prefabricated components through the triangular grid mesh size, wherein the prefabricated components comprise a wave wall unit, a hollow pipe (4), a sleeve (5), a geotechnical net pad (6), a concrete foot protection unit, and connecting sheets (46), screws (47) and pipe piles (56) matched with the wave wall unit; the wave wall units are sequentially connected and fixed to form a wave wall (2), and the concrete foot protection units are sequentially connected and fixed to form concrete foot protection (31); one side of each wave wall unit is provided with a mortice (22), the other side is provided with a tenon (21) matched with the mortice (22), a water inlet hole (26) is arranged at the midpoint of the bottom of each wave wall unit, and exposed reinforcing steel bars are reserved at the mortice (22), the tenon (21) and the water inlet hole (26); the joint of the concrete foot protection unit and the III-type sleeve (512) is provided with a through hole and exposed steel bars are reserved; performing anti-corrosion treatment on the tubular pile (56);
continuously excavating earthwork at the top of the dike surface (1) according to the drawing requirement until the foundation pit is formed; the foundation pit excavation comprises a wave wall (2) foundation pit at a dyke top pavement (12) and a concrete foot protection (31) foundation pit at a dyke foot (3); digging to the designed depth, paving a geomembrane for seepage prevention treatment, filling a bedding layer and compacting;
thirdly, aligning mortises (22) or tenons (21) on the side edges of the wave wall units, and sequentially hoisting the wave wall units to be placed on a reserved foundation pit on the top of the dyke surface (1); the wave wall (2) is assembled by the following steps: sequentially butting mortises (22) at the side edges of the wave wall units with tenons (21) of the next wave wall unit, binding exposed steel bars at the two sides of the wave wall units by adopting stressed bars, casting concrete on site, and filling exposed steel bars of the wave wall (2) for connection and fixation to finish foundation pit backfilling; a plastic pipe (261) with a proper size is arranged in a water inlet hole (26) at the bottom of the wave wall (2);
Paving a road surface (12) on a bottom plate (25) of the wave wall (2), and arranging a drainage groove (11) along the road surface (12) on the inland side of the arc-shaped panel (24);
step five, leveling the dyke surface (1), arranging a triangular grid net between the wave wall (2) and the dyke feet (3), wherein the installation of the triangular grid net comprises four stages:
The first stage: hoisting a II-type sleeve (511), placing the II-type sleeve on the top of the dike surface (1) and tightly attaching the II-type sleeve to the midpoint of the wave wall unit, wherein a plastic pipe (261) extends outwards to the inside of the II-type sleeve (511), welding reserved steel bars at the bottoms of the II-type sleeve (511) and the wave wall unit through steel bars, filling and covering cast-in-place concrete, and connecting and fixing the II-type sleeve (511) and the wave wall unit;
And a second stage: hoisting the I-shaped sleeve (51), placing the I-shaped sleeve below the II-shaped sleeve (511) on the dike surface (1), reserving a hollow tube (4) assembly space between the I-shaped sleeve and the II-shaped sleeve, wherein positioning measurement is required in the process, precision is ensured, and after positioning is finished, the I-shaped sleeve (51) is temporarily kept stable by adopting a wedge-shaped wood block;
And a third stage: a geotechnical net pad (6) is flatly paved on the dike surface (1), the placed I-shaped sleeve (51) is used as a locating point, and three vertexes of a net pad frame (61) are aligned with the I-shaped sleeve (51);
Fourth stage: connecting tenons (44) at two ends of the hollow tube (4) are aligned with butt-joint tenons (53) around the sleeve (5), the lifting I-shaped hollow tube (41) is placed at two sides of the triangular grid unit, the lifting II-shaped hollow tube (42) is placed at the bottom edge of the triangular grid unit, and the bottom of the hollow tube (4) is pressed on the net pad frame (61);
When the concrete grid is installed, the water holes I (421) of the I-shaped hollow pipes (41) face to the outer side of the triangular grid units, the water holes II (422) of the II-shaped hollow pipes (42) face to the inner side of the triangular grid units, and the triangular grid units in front of the concrete guard feet (31) are not provided with the II-shaped hollow pipes (42);
the initial triangular grid unit of the triangular grid net is arranged at one end of the wave wall unit, the upper end of the hollow tube (4) is connected with the II-type sleeve (511), the lower end of the hollow tube is connected with the I-type sleeve (51), the fixing screw hole (45) of the hollow tube (4) and the positioning screw hole (52) of the sleeve (5) are respectively riveted through the arc-shaped connecting piece (46) by bolts (47), and the hollow tube (4) and the sleeve (5) are fixed, so that the operation is repeated;
the triangular grid units in the middle of the triangular grid net are arranged, the upper end of a hollow tube (4) is connected with a previous I-shaped sleeve (51), the lower end of the hollow tube is connected with a next I-shaped sleeve (51), a screw (47) penetrates through an arc-shaped connecting sheet (46) to rivet a fixing screw hole (45) of the hollow tube (4) and a positioning screw hole (52) of a sleeve (5) respectively, and the sleeve (5) and the hollow tube (4) are fixed, so that the operation is repeated;
The tail end triangular grid units of the triangular grid net are arranged at one end of a concrete guard leg (31), the upper end of a hollow tube (4) is connected with an I-shaped sleeve (51), the lower end of the hollow tube is connected with a III-shaped sleeve (512), a screw (47) penetrates through an arc-shaped connecting sheet (46) to rivet a fixing screw hole (45) of the hollow tube (4) and a positioning screw hole (52) of a sleeve (5) respectively, and the hollow tube (4) and the sleeve (5) are fixed, so that the operation is repeated;
Fifth stage: hoisting the tubular pile (56), sleeving a water-stopping rubber ring (564) on the circular pile (562), driving the circular pile into a foundation below the dike surface (1) through a pile hole (55) at the center of the I-shaped sleeve (51) until a pile cap (561) is tightly attached to the sleeve (5), and fixing the I-shaped sleeve (51);
Step six, hoisting a concrete foot protection unit to be placed on a foundation pit at the position of the embankment foot (3), welding exposed steel bars reserved at the positions of through holes of the III-type sleeve (512) and the concrete foot protection (31) by steel bars, filling and covering cast-in-place concrete, cutting slurry and stone at the positions of the through holes of the concrete foot protection (31), plastering cement, and forming a foot protection drainage groove (32), so that a groove (532) of the III-type sleeve (512) is communicated with the foot protection drainage groove (32).
7. The construction method according to claim 6, wherein: and step three is needed to be carried out immediately after the step two is completed.
8. The construction method according to claim 7, wherein: and fifthly, when a triangular grid net is arranged between the wave wall (2) and the embankment feet (3), the sleeve (5) is timely adjusted to be positioned, and the triangular grid units are used as units for continuous assembly.
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| CN111424606A (en) * | 2020-04-01 | 2020-07-17 | 辰源海洋科技(广东)有限公司 | Ecological seawall structure for ocean ecological restoration |
| CN111622179A (en) * | 2020-05-28 | 2020-09-04 | 上海市水利工程设计研究院有限公司 | Fence plate slope protection structure for ecological reconstruction of sea wall and construction method thereof |
| CN111676900A (en) * | 2020-06-22 | 2020-09-18 | 福建万山水利水电设计有限公司 | Slope type seawall and construction method thereof |
| CN214993495U (en) * | 2020-12-17 | 2021-12-03 | 河海大学 | Slope type ecological sea wall structure assembled with grid net |
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| CN112663559A (en) | 2021-04-16 |
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