CN115316186B

CN115316186B - Circular pipe pile for soil slope tree planting and slope fixing matching

Info

Publication number: CN115316186B
Application number: CN202211098637.XA
Authority: CN
Inventors: 徐玮彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-10-03
Anticipated expiration: 2042-09-09
Also published as: CN115316186A

Abstract

The circular pipe pile comprises a tubular pile body rolled by a steel plate, wherein the steel plate is provided with a first long side and a second long side, the first long side and the second long side form an axial movable joint capable of being lapped and locked, the length of the tubular pile body is smaller than that of a main root of a tree of a straight root system used for tree planting, and a plurality of fibrous root outlet holes are formed in the pipe wall at one side of the axial movable joint. One embodiment is also provided with a lock head, a clamping hole and an elongated lock rod, wherein the elongated lock rod can lock the axially movable connector. The round pipe pile forms a clutch type coiled sheet structure, the round pipe pile at the young tree stage can play a role in engineering fixation, and after the locking at the adult tree stage is released, the round pipe pile body can be pulled away, and the root can return to a normal water and soil environment. The round pipe pile can be repeatedly used after being pulled away from the soil body, so that the soil engineering cost can be saved, and the round pipe pile has the effects of short construction period, low construction cost and soil pollution reduction.

Description

Circular pipe pile for soil slope tree planting and slope fixing matching

Technical Field

The invention relates to the technical field of slope reinforcement, in particular to a circular pipe pile for soil slope tree planting and slope fixing matching.

Background

In the foundation engineering construction of mountain highway construction, water conservancy and hydropower engineering and the like, the soil slope is required to be reinforced for improving the stability and the safety of the soil slope. In the prior art, a method for reinforcing a side slope by arranging a protective net is provided, and the method can only prevent soil on the surface layer of the side slope from sliding down. There are also methods of planting trees and fixing slopes, cement piles or steel pipe piles in a multipoint layout mode. For the fixation of soil slope, if directly adopt the mode of planting trees reinforcement, because trees implant earlier stage root system weak point, root volume are few and the growth direction of main root is vertical growth, lead to the domatic vertical direction go deep depth inadequately, solid soil effect is not good. If engineering measures are simply adopted, the coordination with the natural environment is not facilitated. Most of the existing soil slope treatment methods are to carry out tree planting greening after the slope reinforcement measures are implemented, and the construction period is long.

Chinese patent application CN106818264a discloses a circular pipe pile for reinforcing a slope in cooperation with a straight root tree, wherein the circular pipe pile can be placed in the soil slope perpendicular to the slope, and the circular pipe pile is provided with a fibrous root outlet and a nutrient solution conveying pipe; the straight root arbor can be planted in the circular pipe pile pipe body placed in the soil slope, the main root grows along the circular pipe pile perpendicular to the slope surface in the early growth stage, and the main root naturally grows downwards after the main root grows beyond the circular pipe pile. The technical scheme synchronously implements engineering slope fixing measures and tree planting, thereby saving the construction period and enhancing the slope fixing effect. The defects are that: 1. although the distal end of the root can extend out of the pipe pile to grow freely, the length of the common pipe pile is generally more than 3 meters, so that the main body part of the root is limited in the pipe pile cavity for a long time, and the water and fertilizer absorption of the root is seriously affected; 2. the root in the tubular pile lumen has the problem of radial growth limitation, and the problem is particularly remarkable when the tree body enters an adult tree stage, and the serious problem can lead to death of the tree body. Although the technical proposal adopts a method of expanding the pipe diameter (to 60-80 cm) and matching the nutrient solution delivery pipe to avoid the problems, the problems are not thoroughly solved, which affects the popularization and application of the technology.

Disclosure of Invention

The invention aims to solve the problem of providing a circular pipe pile matched with soil slope planting and slope fixing.

The invention adopts the following technical scheme that the pipe pile comprises a pipe pile body, wherein the pipe pile body is formed by rolling a steel plate, the steel plate is provided with a first long side and a second long side, the first long side and the second long side form an axial movable joint which can be lapped and locked in a rolling state, the length of the pipe pile body is smaller than the length of a main root of a straight root tree used for tree planting after the tree is formed, and a plurality of fibrous root outlet holes are formed in the pipe wall at one side of the axial movable joint.

The principle is as follows: the soil slope is divided into an upper weak layer and a lower bearing layer, and the invention is matched with tree planting and slope fixing, and the tree planting and slope fixing tree adopts a straight root system arbor. The circular pipe pile forms a clutch type coiled sheet structure, an axial movable joint (a first long side and a second long side) is connected and locked to form a cylindrical common pipe pile structure, and the axial movable joint (the first long side and the second long side) is unlocked to be in a separation state to form the coiled sheet structure. According to the requirement, the round pipe pile placed in the soil body can be converted into a coiled sheet structure from a pipe pile structure. The locking structure of the axially movable interface can take many forms.

The construction and later management steps of the round pipe pile are as follows:

1) Material preparation: determining proper straight root system arbor varieties according to construction environments; according to the actual condition of the side slope and the used straight root arbor, round pipe piles with proper length, diameter and thickness are selected, and the first long side and the second long side are set to be in a locking state.

2) Preparation before construction: the field is clear and flat, a mechanical walking track is paved, and a mechanical approach is realized.

3) The circular pipe pile is placed in the soil slope: the round pipe pile is placed into soil body of soil slope along the direction vertical to slope surface, and one side of axial movable connector with fibrous root outlet hole is upward.

4) Planting arbor: and planting straight root system arbor in the round pipe pile, wherein the root system direction of the straight root system arbor extends along the inclined lower direction of the inner wall of the pipe and is vertical to the slope.

5) And (3) construction completion: after the straight root system arbor is planted, the construction equipment is removed, and the site is cleaned.

6) Unlocking the axially movable interface: along with the growth of the straight root system arbor, the distal end of the root system extends beyond the pipe orifice at the lower end of the round pipe pile and penetrates into the bearing layer, and naturally turns to downwards grow under the action of gravity. In the stage that the tree body gradually enters the adult tree, the inclined root part positioned in the inner cavity of the pipe is thickened, and the radial growth tends to be in a limited state, in this stage, the inclined root part in the pipe pile has enough thickness, length and strength, and can basically replace the circular pipe pile to realize the soil fixing function. At this time, the locking state of the axial movable connector (the first long side and the second long side) can be released, the first long side and the second long side are separated, and the circular pipe pile is immediately converted into a coiled sheet structure.

7) Drawing out the round pipe pile (coiled sheet structure): according to the actual condition of the inclined root which is obliquely pricked into the slope body for growth, the circular pipe pile (coiled sheet structure) can be temporarily reserved or pulled away from the soil body. If the round pipe pile (coiled sheet structure) is required to be reserved in the soil body, other operations are not required after unlocking, the round pipe pile is continuously extruded by the radial growth of the inclined root, the opening is gradually expanded by the axially movable connector, fibrous roots at the opening are naturally increased, and the effect of increasing the water and fertilizer supply is achieved. When the inclined root can replace the circular pipe pile to realize the soil fixing function, the circular pipe pile with the coiled sheet structure can be pulled away from the soil body by adopting a mechanical device, so that the water and fertilizer isolation of the original pipe wall to the inclined root is avoided, the inclined root is restored to the normal water and soil environment, the fibrous root around the inclined root can naturally proliferate, and the soil fixing effect is enhanced year by year. Before the extraction operation step, a mechanical device can be used for knocking down the round pipe pile to cause the round pipe pile to be pricked downwards by about 30cm, and the operation can retract part of fibrous roots penetrating through the fibrous root outlet hole into the pipe, so that the damage of the extraction operation to root systems is reduced.

The improvement is that the inner side of the first long side is provided with a plurality of lock heads with axial lock holes, the second long side is provided with clamping holes matched with the lock heads, and the lock further comprises a long lock rod which can be inserted into the axial lock holes to lock the axial movable connectors. The locking state of the axial movable interface can be released by axially pulling the long locking rod upwards.

The other improvement is that the utility model also comprises an inner rolling extension sleeve arranged at the end part of the second long side. The locking structure is buried in the soil for a long time, so that the problem of easy corrosion is solved, and the inner rolling type extension sleeve can protect locking structures such as a lock head, a long locking rod and the like and reduce the corrosion.

In a further improvement, the first long side is provided with a first inner curled edge, the second long side is provided with a second inner curled edge, and the device further comprises an elongated locking piece provided with a clamping groove, and the elongated locking piece can lock the first inner curled edge and the second inner curled edge. The locking state of the axial movable interface can be released by axially pulling the long locking piece upwards.

The beneficial effects of the invention are as follows:

1. the circular pipe pile is of a clutch type coiled sheet structure, the first long side and the second long side are connected and locked to form a cylindrical common pipe pile structure, and the first long side and the second long side are unlocked and separated to form the coiled sheet structure. In the early growth stage of the tree body, the round pipe pile plays an engineering fixing role on the soil slope, so that the effect of fixing the slope is achieved; in the growing stage of the tree body, along with thickening of the rhizome, the radial growth of the inclined root part of the round pipe pile tends to be limited, and through evaluation, when the inclined root part of the inclined penetration slope body growth can basically replace the round pipe pile to realize the soil fixing function, the locking state of the axial movable connector can be released, the pipe pile body with the coiled sheet structure is pulled away from the soil body and returns to the normal soil and water environment, the root part freely grows, the soil fixing function is fully exerted, and the soil fixing effect is enhanced year by year.

2. The round pipe pile can be repeatedly used after being pulled out of soil, and the cost of soil engineering can be saved.

3. The invention adopts double measures of engineering slope fixing of soil slope and straight root system arbor slope fixing, not only solves the problem that the straight root system arbor has poor reinforcing effect due to short root system in the early period of slope fixing, but also avoids the problem that the implementation period of the conventional engineering slope fixing and the straight root system arbor slope fixing is long in stages, and has the advantages of short construction period and low construction cost.

4. The conventional circular pipe pile is kept in soil for a long time, and the problem of soil pollution exists.

Drawings

FIG. 1 is a schematic diagram of the present invention combined with tree planting to fix a slope.

FIG. 2 is a schematic cross-sectional view (shown separated) of a latch mechanism according to a first embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a latch mechanism according to a first embodiment of the present invention (shown in a latched condition).

Fig. 4 is a schematic cross-sectional view of a tubular pile body according to a first embodiment of the present invention.

Fig. 5 is a schematic perspective view of a first embodiment of the present invention.

Fig. 6 is an enlarged schematic view of a partial structure of fig. 5.

FIG. 7 is a schematic cross-sectional view of a latch mechanism according to a second embodiment of the present invention (shown in a latched condition).

Fig. 8 is a schematic cross-sectional view of a tubular pile body according to a second embodiment of the present invention.

FIG. 9 is a schematic partial perspective view of an elongated latch according to a second embodiment of the present invention.

FIG. 10 is a schematic cross-sectional view of a latch structure according to a third embodiment of the present invention (showing an inner wrap type extension sleeve structure).

In the figure: the tubular pile comprises a tubular pile body 1, a first long side 2, a second long side 3, an axially movable connector 4, a fibrous root outlet hole 5, an axially locking hole 6, a locking head 7, a clamping hole 8, an elongated locking rod 9, an inner rolling extension sleeve 10, a first inner rolling edge 11, a second inner rolling edge 12, an elongated locking piece 13, an inclined root 14, a weak layer 20 and a bearing layer 21.

Detailed Description

As shown in fig. 1 to 10, an embodiment of the present invention adopts a technical scheme that the pipe pile comprises a pipe pile body 1, wherein the pipe pile body 1 is formed by rolling a steel plate, the steel plate is provided with a first long side 2 and a second long side 3, the first long side 2 and the second long side 3 form an axial movable connector 4 capable of being lapped and locked in a rolling state, the length of the pipe pile body 1 is smaller than the length of a main root of a tree of a straight root system used for tree planting, and a plurality of fibrous root outlet holes 5 are formed in a pipe wall at one side of the axial movable connector 4.

The principle is as follows: the soil slope is divided into an upper weak layer 20 and a lower bearing layer 21, and the invention is matched with tree planting and slope fixing, and the tree planting and slope fixing adopts a straight root system arbor. The circular pipe pile of the invention forms a clutch type coiled sheet structure, the axial movable joint 4 (the first long side 2 and the second long side 3) is connected and locked to form a cylindrical common pipe pile structure, and the axial movable joint 4 (the first long side 2 and the second long side 3) is unlocked to be in a separated state to form the coiled sheet structure. According to the requirement, the round pipe pile placed in the soil body can be converted into a coiled sheet structure from a pipe pile structure. The locking structure of the axially movable interface 4 may take a variety of forms.

1) Material preparation: determining proper straight root arbor varieties such as poplar, pine, elm and the like according to construction environments; according to the actual condition of the side slope and the used straight root arbor, round pipe piles with proper length, diameter and thickness are selected, and the first long side 2 and the second long side 3 are set to be in a locking state. A circular pipe pile of a specific embodiment is 3m in length, 45cm in diameter and 5mm in steel plate thickness.

3) The circular pipe pile is placed in the soil slope: the round pipe pile is placed into soil body of the soil slope along the direction vertical to the slope surface, and one side of the axial movable joint 4 provided with the fibrous root outlet hole 5 is required to be kept upwards.

6) Unlocking the axially movable interface 4: along with the growth of the straight root system arbor, the distal end of the root system extends beyond the pipe orifice at the lower end of the round pipe pile, penetrates into the bearing layer 21, naturally turns under the action of gravity and grows downwards. In the stage that the tree body gradually enters the adult tree, the inclined root 14 positioned in the inner cavity of the pipe is thickened, the radial growth tends to be in a limited state, and in the stage, the inclined root 14 in the pipe pile has enough thickness, length and strength, and can basically replace the circular pipe pile to realize the soil fixing function. At this time, the locking state of the axially movable connector 4 (the first long side 2 and the second long side 3) can be released, the first long side 2 and the second long side 3 are separated, and the circular pipe pile is immediately converted into a coiled sheet structure.

7) Drawing out the round pipe pile (coiled sheet structure): the tubular pile (coiled sheet structure) can be temporarily reserved or pulled away from the soil body according to the soil slope fixing requirement and the actual condition of the inclined root 14. If the round pipe pile (coiled sheet structure) is required to be reserved in the soil body, other operations are not required after unlocking, the round pipe pile is continuously extruded by the radial growth of the inclined root 14, the opening is gradually expanded by the axially movable connector 4, fibrous roots at the opening are naturally increased, and the effect of increasing water and fertilizer supply is achieved. When the inclined root 14 can replace the round pipe pile to realize the soil fixing function, the round pipe pile with a coiled sheet structure can be pulled away from the soil body by adopting a mechanical device, so that the water and fertilizer isolation of the original pipe wall to the inclined root 14 is avoided, the inclined root 14 returns to the normal water and soil environment, fibrous roots around the inclined root 14 naturally proliferate, and the soil fixing effect is enhanced year by year. Before the extraction operation step, a mechanical device can be used for knocking down the round pipe pile to cause the round pipe pile to be pricked downwards by about 30cm, and the operation can retract part of fibrous roots penetrating out of the fibrous root outlet hole 5 into the pipe, so that the damage of the extraction operation to root systems is reduced.

As shown in fig. 2 to 6, an improvement is that the inner side of the first long side 2 is provided with a plurality of locking heads 7 with axial locking holes 6, the second long side 3 is provided with a clamping hole 8 matched with the locking heads 7, and the connector further comprises an elongated locking rod 9, and the elongated locking rod 9 can be inserted into the axial locking holes 6 to lock the axially movable connector 4. The locking state of the axially movable connector 4 can be released by axially pulling the long locking rod 9 upwards.

As shown in fig. 10, another modification further comprises an inner wrap type extension sleeve 10 provided at the end of the second long side 3. The locking structure is buried in the soil for a long time, so that the problem of easy corrosion is solved, and the inner rolling type extension sleeve 10 can protect the locking structure such as the lock head 7, the long locking rod 9 and the like and reduce the corrosion.

As shown in fig. 7 to 9, a further development is that the first long side 2 is provided with a first inner bead 11 and the second long side 3 is provided with a second inner bead 12, and that an elongate locking element 13 is provided with a locking groove, which locking element 13 can lock the first inner bead 11 and the second inner bead 12. The locking state of the axially movable interface 4 can be released by axially pulling the long locking piece 13 upwards.

The invention is not limited to the specific structure of the above embodiment, and equivalent transformation of other similar structures falls within the protection scope of the invention.

Claims

1. The utility model provides a soil slope planting solid pipe stake of slope matching use, includes the tubular pile body, its characterized in that: the tubular pile body is formed by rolling a steel plate, the steel plate is provided with a first long side and a second long side, the first long side and the second long side form an axial movable connector capable of being lapped and locked in a rolling state, the length of the tubular pile body is smaller than that of a main root of a tree which is a straight root for tree planting, a plurality of fibrous root outlet holes are formed in the pipe wall on one side of the axial movable connector, a plurality of locking heads with axial locking holes are arranged on the inner side of the first long side, a clamping hole matched with the locking heads is formed in the second long side, the tubular pile further comprises a long locking rod and an inner rolling extension sleeve, the long locking rod can be inserted into the axial locking holes to lock the axial movable connector, and the inner rolling extension sleeve is arranged at the end part of the second long side.