CN214497380U - Assembled low pile cap shore protection suitable for silt foundation - Google Patents
Assembled low pile cap shore protection suitable for silt foundation Download PDFInfo
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- CN214497380U CN214497380U CN202022402763.2U CN202022402763U CN214497380U CN 214497380 U CN214497380 U CN 214497380U CN 202022402763 U CN202022402763 U CN 202022402763U CN 214497380 U CN214497380 U CN 214497380U
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Abstract
The utility model provides an assembled low pile cap shore protection suitable for silt foundation, including the pile foundation, prefabricated bottom plate, be equipped with a plurality of bottom plate trompil on the prefabricated bottom plate, the pile head passes the bottom plate trompil, prefabricated bottom plate erects on the pile foundation bracket, pile head lateral part recess is located prefabricated bottom plate top, pile head both sides groove position installation fastener, the fastener is L shape, the outside protrusion in fastener lower part forms the fastener tenon, the fastener tenon closely laminates with pile head lateral part recess, the fastener bottom offsets with the bottom plate, pile head external member cover is peripheral at pile head and fastener, form the effective connection of prefabricated pile foundation and prefabricated bottom plate. The utility model discloses an assembled low pile cap shore protection structure is reliable, and the component can be demolishd according to the demand in order, does not leave over abandonment concrete in the soil body, reduces the influence to ecology. The method has the advantages of adopting factory standard prefabrication, being low in cost and good in universality, completely avoiding the step of cast-in-place concrete construction on site, shortening the construction period on site, being good in construction quality and having small environmental influence.
Description
Technical Field
The utility model relates to a river course engineering construction technical field discloses an assembled low pile cap shore protection suitable for silt foundation.
Background
The construction of bank protection projects on a river course often encounters the problems that the height difference between a riverbed and a rear land area is large, the slope space is small, a vertical type bank protection section or a combined type bank protection section needs to be constructed, a vertical type bank protection structure is constructed on a muddy foundation with relatively poor mechanical indexes, and foundation treatment or a deep foundation structure needs to be adopted to meet the requirement of ensuring the safety and stability of the structure.
Conventional vertical type shore protection or combined type shore protection have gravity type retaining wall structure, pile foundation cushion cap retaining wall structure etc. and are deep at silt, newly-built gravity type retaining wall structure on the relatively poor ground of foundation bearing capacity, need carry out ground processing on a large scale, compare pile foundation formula structure and be uneconomic. The conventional pile foundation bearing platform retaining wall construction usually needs cast-in-place concrete members below the water level elevation, the construction interface is large, the construction period is long, and a cofferdam needs to be filled to occupy a river channel for a long time. The functions of river navigation, flood transportation and the like are influenced. Therefore, an assembled revetment suitable for a muddy foundation and a construction method thereof are urgently needed to be explored.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an assembled low pile cap shore protection suitable for silt texture ground, overcoming the limitation that conventional shore protection form was used on silt texture base river course, realizing that river course shore protection engineering factory is built and is established. And can flexibly reform transform local river course trend in the use process, realize component recovery when river course revetment is reformed once more.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
the utility model provides an assembled low pile cap shore protection suitable for silt foundation which characterized in that: the assembled low pile cap shore protection is including the pile foundation of inserting in soil, the pile foundation top is equipped with the pile head, the upper portion both sides side of pile head is equipped with the recess, the pile head below is equipped with the pile foundation bracket, be equipped with a plurality of bottom plate trompil on the prefabricated bottom plate, place prefabricated bottom plate level, the pile head passes the bottom plate trompil, prefabricated bottom plate erects on the pile foundation bracket, pile head lateral part recess is located prefabricated bottom plate top, pile head both sides groove position installation fastener, the fastener is L shape, the outside bulge in fastener lower part forms the fastener tenon, the fastener tenon closely laminates with pile head lateral part recess, the fastener bottom offsets with the bottom plate, pile head external member cover is peripheral at pile head and fastener, form the effective connection of prefabricated pile foundation and prefabricated bottom plate.
Furthermore, a plurality of layers of ecological frames are stacked above the prefabricated bottom plate to form a retaining wall, soil is back filled behind the retaining wall, and the number of layers of the ecological frames is reasonably set according to different soil retaining requirements.
Furthermore, the front part of the prefabricated bottom plate is provided with an upper flange extending upwards and a lower flange extending downwards, the front wall of the ecological frame is abutted against the upper flange of the prefabricated bottom plate, and the lower flange of the prefabricated bottom plate is inserted into the soil.
Furthermore, when the number of the ecological frames is more than 4, the geogrids are arranged between the ecological frames and are bonded with the rear soil body to keep stable.
Furthermore, geotextile is laid in the ecological frame, planting soil is arranged in the ecological frame, and plants near water are planted in the ecological frame.
Furthermore, a turf protection slope is planted on the side slope above the retaining wall, and emergent aquatic plants are planted on the front beach surface of the retaining wall.
Further, the utility model discloses an assembled low pile cushion cap shore protection is applicable to on the river course that rear land area elevation is higher than river course design high water level.
A construction method of an assembled low pile cap revetment suitable for a muddy foundation comprises the following steps:
A. manufacturing a pile foundation, a prefabricated bottom plate, fasteners and a pile head external member, wherein the top of the pile foundation is provided with a pile head, the side surfaces of two sides of the upper part of the pile head are provided with grooves, a pile foundation bracket is arranged below the pile head, the end part of one end of the prefabricated bottom plate is provided with an upper flange and a lower flange, the prefabricated bottom plate is provided with a plurality of bottom plate openings, the fasteners are L-shaped, the outward protruding parts of the lower parts of the fasteners form fastener tenons matched with the grooves of two sides of the pile head, and the pile head external member is provided with square holes matched with the pile head and the fasteners;
B. excavating a foundation trench, namely performing slope-releasing excavation on a riverway side slope to reach the elevation of a bottom plate, and leveling the foundation trench;
C. constructing a prefabricated pile foundation, and driving the pile foundation into soil according to the designed pile position and elevation;
D. constructing a prefabricated bottom plate, lifting the prefabricated bottom plate in place, arranging upper and lower flanges of the prefabricated bottom plate in the forward direction, enabling a hole of the bottom plate to penetrate through a pile head, arranging the prefabricated bottom plate on a bracket, filling a soil body in a place with a gap below the prefabricated bottom plate, installing fasteners at grooves on two sides of the pile head, enabling tenon joints of the fasteners to be tightly attached to grooves on the side parts of the pile head, enabling the bottoms of the fasteners to abut against the bottom plate, and sleeving pile head kits on the peripheries of the pile head and the fasteners to form a whole so as to lock the pile head on the bottom plate;
E. constructing a prefabricated ecological frame, namely placing the prefabricated ecological frame on a prefabricated bottom plate to form a retaining wall, abutting the front wall of the prefabricated ecological frame on the bottom layer against an upper flange at the front part of the prefabricated bottom plate, sleeving pile heads of a front row of pile foundations and a pile head sleeve arranged on the pile heads in the prefabricated ecological frame on the bottom layer, and backfilling a soil body behind the wall;
F. managing slopes and planting in a greening manner.
Furthermore, after the bank protection project is built, if a newly opened branch river needs to be connected to the river channel, the operation can be realized only by moving the ecological frame.
Furthermore, when the river bank protection needs to be reconstructed again in the future, the bank protection member can be orderly dismantled, and waste concrete is not left in the soil body.
The utility model discloses owing to adopted above-mentioned technical scheme, following beneficial effect has:
1. the assembled revetment is assembled by prefabricated pile foundation of standard, prefabricated bottom plate and ecological frame barricade and is formed, adopts effective connection, can reach the requirement of retaining soil and bearing capacity, structure safe and reliable.
2. The ecological frame is a hollow component, so that the communication between the open channel and the underground water body is maintained while the soil body behind the wall is kept stable; meanwhile, the ecological frame can be planted in layers to be suitable for greening under different water level conditions, and the ecological frame has good ecological property.
3. The whole revetment project is formed by each component equipment, can set up the ecological frame of the different number of piles in order to adapt to the high requirement of different soil protections. After the bank protection project is built, if a newly opened branch river needs to be connected to the river channel, the operation can be realized only by moving the ecological frame.
4. When the river bank protection needs to be reformed again in future, the current bank protection member can be orderly dismantled, waste concrete is not left in the soil body, and the influence on ecology is reduced.
5. The bank protection member is prefabricated by adopting factory standards, and large-scale production is realized. The method has the advantages of low cost, good universality, capability of completely avoiding the construction steps of cast-in-place concrete on site, shortening the construction period on site, good construction quality and less environmental influence.
6. The bank protection member is installed on site without strict dry land construction conditions, and can even be constructed underwater, so that the influence on river channel shipping and flood discharge caused by long-time occupation of a river channel by a filled cofferdam is avoided.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a cross-sectional view of the assembled type low pile cap revetment for muddy foundation and the assembled type revetment in the construction method of the present invention;
FIG. 2 is a diagram of the arrangement of pile positions on the prefabricated base plate according to the present invention;
fig. 3 is a schematic structural view of a prefabricated square pile of the present invention;
fig. 4 is a schematic structural view of the prefabricated pile head fastener of the present invention;
fig. 5 is a schematic structural view of a prefabricated pile head kit according to the present invention;
fig. 6 is the utility model discloses well branch river inserts river course department assembled revetment and warp the schematic diagram.
In the figure: 1-prefabricating a square pile; 2-prefabricating pile head fasteners; 3-prefabricating a pile head kit; 4-prefabricating a bottom plate; 5, prefabricating an ecological frame; 6-geotextile; 7-pedestrian walkway; 8-a railing; 9-opening holes on the bottom plate; 10-grass planting slope protection; 11-a waterside plant; 12-emergent aquatic plants; 13-riverbed side slopes; 14-side slope of river in the direction vertical to paper surface.
Detailed Description
The present invention will be more clearly and completely described below with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.
The utility model provides an assembled low pile cap shore protection suitable for silt foundation which characterized in that: the assembled low pile cap shore protection comprises a prefabricated square pile 1 inserted into soil, a pile head is arranged at the top of the prefabricated square pile 1, grooves are formed in the side faces of two sides of the upper portion of the pile head, a pile foundation bracket is arranged below the pile head, a plurality of bottom plate openings are formed in the prefabricated bottom plate, the prefabricated bottom plate is placed at 4 levels, the pile head penetrates through the bottom plate openings, the prefabricated bottom plate 4 is erected on the pile foundation bracket, grooves in the side portions of the pile head are located above the prefabricated bottom plate 4, prefabricated pile head fasteners 2 are installed at the groove positions in two sides of the pile head, the prefabricated pile head fasteners 2 are L-shaped, outward protruding portions of the lower portions of the prefabricated pile head fasteners 2 form fastener tenons, the fastener tenons are tightly attached to the grooves in the side portions of the pile head, the bottom of each prefabricated pile head fastener 2 abuts against the corresponding prefabricated bottom plate 4, and prefabricated pile head kits 3 are sleeved on the peripheries of the pile head and the prefabricated pile head fasteners 2, and effective connection of the prefabricated square pile 1 and the prefabricated bottom plate 4 is formed.
As shown in fig. 1, a bank protection project is newly built on a muddy river, and a low pile cap bank protection structure is often adopted to meet the requirements of bearing capacity and overall stability. The fabricated low pile cap shore protection member is completely prefabricated by adopting factory standards and assembled on site without cast-in-place concrete on site. Carrying out slope-releasing excavation on the riverbed side slope 13, excavating a foundation trench, sinking piles by adopting a vibration pile sinking method, driving the prefabricated square piles 1 into a designated elevation and a plane pile position, and sinking to a bracket position to be combined with manual local excavation and sinking. The prefabricated bottom plate 4 is lifted and installed, the constructor assists the lower bottom plate hole 9 to penetrate through the pile head frame on the bracket, and the position with a gap below the bottom plate is filled. And installing the precast pile head fastener 2 and the precast pile head kit 3 to effectively connect the precast square pile 1 and the precast bottom plate 4. The prefabricated ecological frame 5 is placed according to the drawing requirements, the front wall abuts against the front edge of the prefabricated bottom plate 4, the front row pile foundation pile heads and the prefabricated pile head external members 3 on the front row pile foundation pile heads are all sleeved in the prefabricated ecological frame and are orderly stacked to form a retaining wall, and meanwhile, soil bodies behind the retaining wall are backfilled. And (5) paving geotextile 6 in the prefabricated ecological frame, and backfilling planting soil. Managing slopes in front and back of the retaining wall, planting turf protection slopes 10 on the slopes above the retaining wall, planting suitable plants 11 in the ecological frame, and planting emergent aquatic plants 12 on the beach surface in front of the wall.
Pile up ecological frame and form the barricade above the prefabricated bottom plate, backfill the soil body behind the barricade, rationally set up the ecological frame number of piles according to different fender soil requirements. The geogrid is arranged between the ecological frames under the condition that the number of layers of the ecological frames is large, the geogrid is bonded with a rear soil body to be kept stable, the geogrid does not need to be arranged under the condition that the number of layers of the ecological frames is not more than four, the geogrid is arranged between every two layers after the number of layers exceeds four, the length of the geogrid is obtained according to calculation, the design technology of the ecological frames is mature, and the ecological frames are not important and innovative.
A construction method for assembled low pile cap revetment is characterized by comprising the following steps:
(1) survey lofting
Determining the arrangement position of a revetment structure on a riverway side slope according to the design requirements and the plane position of a drawing, determining the excavation range and elevation of the side slope on the basis of the arrangement position, and marking lines;
(2) excavation of foundation trench
Firstly, slope releasing and excavating are carried out on the side slope of the river channel, and a construction interface is created. The excavation method adopts layered excavation, and is carried out by a 0.5m3 backhoe excavator with a 5-ton dump truck, and earthwork is transported to a designated area. And leveling the foundation trench to ensure that the excavation elevation is accurate. The structure construction does not need cast-in-place concrete, and a small amount of water can be allowed to enter the foundation trench, so that a cofferdam does not need to be filled;
(3) standard prefabricated pile foundation construction
Selecting standard prefabricated square piles with reasonable sizes according to the bearing capacity requirement and the integral stability requirement of the side slope, sinking the piles by adopting a vibration pile sinking method under the condition of a deep sludge foundation, strictly controlling the driving elevation and the plane position of a pile foundation, and sinking the piles to a bracket position by combining manual local excavation and sinking to a specified elevation;
(4) construction of standard prefabricated bottom plate
And (3) conveying the standard prefabricated bottom plate to a construction site for hoisting and installation, wherein the prefabricated bottom plate is a symmetrical component, the front side and the back side are not distinguished, the prefabricated bottom plate is hoisted in place, the opening of the bottom plate penetrates through the pile head to be erected on the bracket under the assistance of constructors, and the place with a gap below the bottom plate is required to be filled. Installing standard prefabricated pile head fasteners and standard prefabricated pile head kits to effectively connect the pile foundation and the base plate;
(5) construction of standard prefabricated ecological frame
The standard prefabricated ecological frame is placed according to the requirements of a drawing, the front wall of the frame abuts against the front edge of the bottom plate, pile heads of the front row pile foundations are sleeved in the frame and are stacked in order, and meanwhile, a soil body behind the wall is backfilled. The number of stacked layers is larger than 4, and the geogrid is arranged between the upper portion and the lower portion of the ecological frame and extends into a rear soil body, so that design requirements are met. Laying geotextile in the ecological frame, and backfilling planting soil;
(6) slope management and greening planting
And the cohesive soil is backfilled behind the wall to meet the design requirement. And (5) arranging slopes in front of and behind the retaining wall, and planting suitable greening.
As shown in fig. 4, after the bank protection project is constructed, if a newly opened branch river needs to be connected to the river channel, the ecological frame 5 is only moved, and the river mouth is connected by adopting the conical slope.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (5)
1. The utility model provides an assembled low pile cap shore protection suitable for silt foundation which characterized in that: the utility model discloses a pile foundation support shore protection, including the pile foundation of inserting in soil, the pile foundation top is equipped with the pile head, the upper portion both sides side of pile head is equipped with the recess, the pile head below is equipped with the pile foundation bracket, be equipped with a plurality of bottom plate trompil on the prefabricated bottom plate, the prefabricated bottom plate level sets up, the pile head passes the bottom plate trompil, prefabricated bottom plate erects on the pile foundation bracket, pile head lateral part recess is located prefabricated bottom plate top, fastener is installed to pile head both sides groove position, the fastener is L shape, the outside bulge in fastener lower part forms the fastener tenon, the fastener tenon closely laminates with pile head lateral part recess, the fastener bottom offsets with the bottom plate, pile head external member cover is peripheral at pile head and fastener.
2. The fabricated low pile cap revetment according to claim 1, wherein: a plurality of layers of ecological frames are stacked above the prefabricated bottom plate to form a retaining wall, and a backfill soil body is arranged behind the retaining wall.
3. The fabricated low pile cap revetment according to claim 2, wherein: the front part of the prefabricated bottom plate is provided with an upper flange extending upwards and a lower flange extending downwards, the front wall of the ecological frame is abutted to the upper flange of the prefabricated bottom plate, and the lower flange of the prefabricated bottom plate is inserted into soil.
4. The fabricated low pile cap revetment according to claim 2, wherein: when the number of the ecological frames is more than 4, the geogrids are arranged between the ecological frames.
5. The fabricated low pile cap revetment according to claim 1, wherein: geotextile is laid in the ecological frame, planting soil is arranged in the ecological frame, and waterside plants are planted in the ecological frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022402763.2U CN214497380U (en) | 2020-10-26 | 2020-10-26 | Assembled low pile cap shore protection suitable for silt foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022402763.2U CN214497380U (en) | 2020-10-26 | 2020-10-26 | Assembled low pile cap shore protection suitable for silt foundation |
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| CN214497380U true CN214497380U (en) | 2021-10-26 |
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| CN202022402763.2U Active CN214497380U (en) | 2020-10-26 | 2020-10-26 | Assembled low pile cap shore protection suitable for silt foundation |
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