CN216551388U - Soft foundation embankment structure and drainer for soft foundation embankment construction - Google Patents

Abstract

The utility model relates to a weak foundation embankment structure, which comprises an embankment body, drainage ditches and a water collecting well, wherein the drainage ditches are positioned at two sides of a roadbed and used for discharging water in the foundation, the water collecting well is provided with an inverted siphon used for discharging the water in the water collecting well into a local water system, the embankment body is supported on a surface hard shell layer formed by solidifying the roadbed in situ, and the surface hard shell layer is formed by adding cement and a curing agent to the roadbed and then stirring and solidifying the roadbed. The utility model also relates to a drainer for constructing the soft foundation embankment, which comprises a supporting seat provided with traveling wheels and a plurality of drainage units, wherein each drainage unit comprises a bearing seat, the bottom wall of each bearing seat is provided with a through groove provided with a plurality of vertical connecting holes, the bearing seats of all the drainage units are detachably connected together, and the through grooves are butted together to form a drainage groove. The utility model aims to provide a soft foundation embankment structure with good stability, and solves the problems that an embankment built on the existing soft foundation is easy to settle and poor in stability.

Description

Soft foundation embankment structure and drainer for soft foundation embankment construction

Technical Field

The utility model relates to the technical field of road traffic construction, in particular to a soft foundation embankment structure and a drainer for constructing the soft foundation embankment.

Background

Soft soil has a quite large distribution range in coastal and inland areas of China, and a soft soil foundation (the soft soil in a marshland is also rich in free water) is often encountered in road construction. The weak layer is often thicker, has the characteristics of high water content, high compressibility, high sensitivity, easy disturbance, easy deformation, low bearing capacity and the like, has large influence on the stability of the roadbed, and the foundation easily causes excessive settlement and uneven settlement under the action of an upper load to influence the service performance and the service life of a road. The existing construction method of the road embankment is the same as that of a hard roadbed, soil is compacted to the set thickness after being filled in place at one time, and the set embankment thickness meets the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a soft foundation embankment structure with good stability, and solves the problems that an embankment built on the existing soft foundation is easy to settle and poor in stability.

The technical problem is solved by the following technical scheme: the utility model provides a weak ground embankment structure, its characterized in that includes embankment main part, the drainage ditch that supplies the interior water of ground to discharge that is located the road bed both sides and the sump pit of collecting the water of drainage ditch, the sump pit is provided with the inverted siphon who is used for discharging the water in the sump pit into local water system, embankment main part supports on the surperficial crust layer that solidifies and forms on the spot the roadbed, the surperficial crust layer is for adding cement and curing agent and stirring the solidification to the roadbed and form. This technical scheme owing to can carry out the drainage to the road bed, the former ground of road bed has gone on hardening to upper end stability is good, can improve road bed intensity in former ground. A

Preferably, the embankment body comprises a roadbed top layer, two base layers and a plurality of heightening layers positioned between the roadbed top layer and the base layers; the compacted thickness of the base layer is 43 cm-47 cm and 45 cm; the compaction thickness of the heightening layer is 20 cm-25 cm. The compaction effect of embankment main part is good.

Preferably, a concrete supporting surface layer is arranged in the drainage ditch. The equipment is supported in the escape canal and works when being convenient for to drain.

The utility model also provides a drainer for constructing a soft foundation embankment, which comprises two supporting seats provided with travelling wheels and a plurality of drainage units, wherein each drainage unit comprises a bearing seat, the upper surface of each bearing seat is provided with a through groove extending along the width direction of the roadbed, the bottom wall of each through groove is provided with a plurality of vertical connecting holes, the bearing seats of all the drainage units are detachably connected together, the through grooves are butted together to form a drainage groove, the two ends of each drainage ditch are connected with the two supporting seats, the two ends of each drainage groove are provided with a drainage port positioned above the drainage ditch, an outer pipe inserted into the roadbed can be connected in the vertical connecting holes in a lifting way, an inner rod internally provided with a water collecting cavity can be penetrated in the outer pipe in a lifting and rotating way, the peripheral surface of the outer pipe is provided with water holes of the outer pipe part, the water holes of the outer pipe part are provided with water strainer nets, the water collecting cavity is provided with inner rod part water holes which can be aligned with the water holes of the outer pipe part in a one-to-one correspondence way, the upper end of the outer pipe is connected with the bearing seat through an outer pipe lifting structure, and the upper end of the inner rod is connected with the inner rod lifting structure and the inner rod rotating structure. The process of carrying out the drainage through this drainer does: the outer tube of outer tube elevation structure drive descends and inserts in the road bed, descend and wear to establish in the outer tube in interior pole elevation structure drive, pole rotation in interior pole rotation structure drive is neat with outer tube portion water hole to the inner tube portion water hole, free water in the road bed earth gets into the chamber of catchmenting through outer tube portion water hole and inner tube portion water hole, earth is stopped at the chamber outside that catchments by the water strainer, pole rotation in interior pole rotation structure drive is crossed with outer tube portion water hole and is made interior pole portion water hole closed by the outer tube in the pole rotation structure drive, pole elevation in interior pole elevation structure drive is higher than the upper end of outer tube to the pole portion water hole that lies in the below, the water in the chamber of catchmenting flows out in the water drainage tank and then the runner escape canal through inner tube portion water hole, drainage process is to the log raft play that arrives the road bed and meets the requirements above repetition. Can absorb the water in the roadbed more sufficiently and quickly and discharge the water.

Preferably, the strainer in all the vertical holes of the outer pipe part are connected together to form a filter pipe, and the filter pipe is arranged in the outer pipe in a penetrating way. It is convenient to arrange the water strainer in the water hole of the outer pipe part.

Preferably, the upper end of the connecting hole is provided with a protruding section protruding out of the bottom wall of the drainage through groove, and the upper end of the outer pipe is provided with an outward flange blocking the protruding section. The water in the drainage channel can be reliably prevented from flowing back to the roadbed from the bearing seat between the outer pipe and the bearing seat. The outer pipe and the bearing seat can be matched, so that labor is saved when the outer pipe is lifted.

Preferably, the wall of the water collecting cavity is hinged with a plurality of stirring rods which are distributed along the circumferential direction of the inner rod and can be folded into the water collecting cavity and extend out of the water collecting cavity through horizontal hinge shafts. When in use: interior pole rises for the last time and the log raft in will gathering the water cavity is discharged the back, thereby add cement and curing agent to the inner tube through the upper end of outer tube thereby realize adding cement and curing agent to the road bed in, outer tube elevation structure drive outer tube rises and extracts the road bed, thereby the pole descends and inserts in the road bed in interior pole elevation structure drive, makes the puddler stretch out and gathers the water cavity, and it is rotatory through interior pipe revolution mechanic drive interior pole, thereby the rotatory realization of pole is stirred the road bed after adding cement and curing agent when interior pole is rotatory. The drainer can also be used for stirring after adding the curing agent, and the method can add the cement and the curing agent into the roadbed, so that the stirring at the upper end is easier to be uniform.

Preferably, the stirring rod is provided with a supporting arm, and a supporting block is arranged in the water collecting cavity; when the stirring rod is folded into the water collecting cavity, the supporting arm is supported on the supporting block, and the moment generated by the gravity of the stirring rod drives the supporting arm to be supported on the supporting block. The labor can be saved when the inner rod is rotated.

Preferably, the inner rod lifting structure comprises a lifting plate, a lifting plate lifting cylinder for supporting the lifting plate on the bearing seat, a motor connected to the lifting plate, a driving gear arranged on a power output shaft of the motor and a plurality of driven gears which are correspondingly connected to the inner rod one by one and meshed with the driving gear, wherein the inner rod can be rotatably arranged on the lifting plate in a penetrating manner and is provided with a stop block matched with the lifting plate to enable the lifting plate to lift the inner rod; the outer tube lifting mechanism is an outer tube lifting cylinder, one end of the outer tube lifting cylinder is connected with the outer tube, and the other end of the outer tube lifting cylinder is connected with the bearing seat.

Preferably, the travelling wheels of the two supporting seats are supported in the drainage ditches on two sides of the roadbed in a one-to-one correspondence manner. The drainer can be prevented from being embossed on the road surface and needing to be flattened.

The utility model has the following advantages: firstly, aiming at the characteristic of high underground water level of a soft foundation, drainage measures of a drainage ditch, a water collecting well and an inverted siphon are adopted to optimize drainage, so that the water in the roadbed can be ensured to be smoothly discharged into a local water system; secondly, the weak original ground is cured in situ by adopting a strong stirring method, so that a hard shell layer is quickly formed on the surface of the roadbed, and the bearing capacity is improved; thirdly, the first layer of the subgrade is doped with cement and lime, which is beneficial to improving the water stability of the soft foundation; fourthly, the first layer and the second layer are filled by thick layers, which is beneficial to the mechanized construction of the embankment; and fourthly, the embankment is made of waste soil solidified soil, so that the embankment is light in weight, and resource conservation and pollution control are realized while uneven settlement is avoided.

Drawings

FIG. 1 is an end view of an embankment constructed in accordance with the present invention;

FIG. 2 is a schematic view of a drainage structure;

fig. 3 is a schematic cross-sectional view of the drainer with both the outer pipe and the inner pipe inserted into the subgrade;

FIG. 4 is an enlarged partial schematic view at A of FIG. 3;

FIG. 5 is a schematic top view of the drain;

FIG. 6 is a partially enlarged view showing the outer pipe of the drainer inserted into the roadbed inner rod and the outer pipe pulled out for draining;

fig. 7 is a partially enlarged view illustrating the outer pipe of the drainer when the inner pole of the roadbed is pulled out and inserted into the roadbed to be stirred.

In the figure: the water collecting device comprises a drainage ditch 1, a water collecting well 2, a local water system 3, an inverted siphon 6, a surface crust layer 7, a roadbed top layer 8, a base layer 9, a heightening layer 10, a travelling wheel 11, a supporting seat 12, a bearing seat 13, a through groove 14, a vertical connecting hole 15, a drainage groove 16, a drainage outlet 17, an outer pipe 18, a water collecting cavity 19, an inner rod 20, an outer pipe water hole 21, a water filter screen 22, an inner rod water hole 23, an outer pipe lifting structure 24, a lifting plate 25, a lifting plate lifting cylinder 26, a stop block 27, a motor 28, a driving gear 29, a driven gear 30, a protruding section 31, an outward flanging 32, a horizontal hinge shaft 33, a stirring rod 34, a supporting arm 35, a supporting block 36, a roadbed 40, a lead vertical rod 38, a connecting lug 39, a bolt 41 and a nut 42.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 7, a weak foundation embankment structure includes an embankment body, drainage ditches 1 located at both sides of the roadbed for draining water in the foundation, and water collecting wells 2 for collecting water in the drainage ditches, the water collecting wells are provided with inverted siphons 6 for draining water in the water collecting wells into a local water system 3, the embankment body is supported on a surface crust layer 7 formed by curing the roadbed in situ, and the surface crust layer is formed by adding cement and curing agent to the roadbed and then stirring and curing the roadbed. The embankment body comprises a top roadbed layer 8, two base layers 9 and a plurality of heightening layers 10 arranged between the top roadbed layer and the base layers. The compacted thickness of the base layer is 43 cm-47 cm and 45 cm; the compaction thickness of the heightening layer is 20 cm-25 cm. The depth of the drainage ditch is more than 60cm, and the depth of the water collecting well is 1.0-1.5 m. The thickness of the surface hard shell layer is 95 cm-105 cm, and the heightening layer is 2 layers. The curing agent is fly ash, lime or slag micro powder.

Before forming the surface crust layer, drainage is firstly carried out to a drainage ditch through the drainer for constructing the soft foundation embankment, the drainer for constructing the soft foundation embankment comprises two supporting seats 12 provided with traveling wheels 11 and a plurality of drainage units, in the embodiment, the number of the drainage units is 3, and the drainage units are arranged according to the width of the roadbed. The drainage unit is including bearing seat 13, and the upper surface that bears the seat is equipped with the logical groove 14 that extends along road bed width direction, is equipped with a plurality of vertical connecting hole 15 on the diapire that leads to the groove, and specifically a drainage unit's logical groove is equipped with 4 vertical connecting hole. The carrier blocks of all the drainage units are detachably connected together and the through slots are butted together to form the drainage channel 16, and specifically the carrier blocks are fixed together by the connecting lugs 39 and the bolts 41 and nuts 42. The two ends of the drainage ditch are connected with the two supporting seats, and the two ends of the drainage groove are provided with a drainage port 17 positioned above the drainage ditch. An outer pipe 18 inserted into the roadbed can be connected in the vertical connecting hole in a lifting manner, and an inner rod 20 with a water collecting cavity 19 arranged inside is arranged in the outer pipe in a penetrating manner in a lifting and rotating manner. The peripheral surface of the outer pipe is provided with an outer pipe water hole 21, and the outer pipe water hole is provided with a water strainer 22. The water collecting cavity is provided with inner rod water holes 23 which can be aligned with the outer pipe water holes in a one-to-one correspondence mode, and the upper end of the outer pipe is connected with the bearing seat through an outer pipe lifting structure 24. The outer tube lifting mechanism is an outer tube lifting cylinder, one end of the outer tube lifting cylinder is connected with the outer tube, and the other end of the outer tube lifting cylinder is connected with the bearing seat. The upper end of the inner rod is connected with the inner rod lifting structure and the inner rod rotating structure. The inner rod lifting structure comprises a lifting plate 25, a lifting plate lifting cylinder 26 for supporting the lifting plate on the bearing seat and a stop block 27 which is arranged on the inner rod and matched with the lifting plate, so that the lifting plate can lift the inner rod. The rotatable structure comprises a motor 28 connected to the lifting plate, a driving gear 29 arranged on a power output shaft of the motor, and a plurality of driven gears 30 which are connected to the inner rod in a one-to-one correspondence and meshed with the driving gear. The inner rod can rotate and be arranged on the lifting plate in a penetrating way in a lifting way. The concrete process of draining the water of the roadbed comprises the following steps: the outer tube of outer tube elevation structure drive descends and inserts in the road bed, descend and wear to establish in the outer tube in interior pole elevation structure drive, pole rotation in interior pole rotation structure drive is neat with outer tube portion water hole to the inner tube portion water hole, free water in the road bed earth gets into the chamber of catchmenting through outer tube portion water hole and inner tube portion water hole, earth is stopped at the chamber outside that catchments by the water strainer, pole rotation in interior pole rotation structure drive is crossed with outer tube portion water hole and is made interior pole portion water hole closed by the outer tube in the pole rotation structure drive, pole elevation in interior pole elevation structure drive is higher than the upper end of outer tube to the pole portion water hole that lies in the below, the water in the chamber of catchmenting flows out in the water drainage tank and then the runner escape canal through inner tube portion water hole, drainage process is to the log raft play that arrives the road bed and meets the requirements above repetition. The water filter nets in the vertical holes of all the outer pipe parts are connected together to form a filter pipe, and the filter pipe is arranged in the outer pipe in a penetrating way. The upper end of the connecting hole is provided with a convex section 31 protruding out of the bottom wall of the drainage through groove, and the upper end of the outer pipe is provided with an outward flange 32 blocking the convex section. The wall of the water collecting cavity is hinged with a plurality of stirring rods 34 which are distributed along the circumferential direction of the inner rod and can be folded into the water collecting cavity and extend out of the water collecting cavity through a horizontal hinge shaft 33, and the number of the stirring rods is 3. (ii) a The concrete process of stirring and curing the roadbed after adding the cement and the curing agent to the roadbed comprises the following steps: interior pole rises for the last time and with the water discharge back of gathering the intracavity, thereby add cement and curing agent to the inner tube through the upper end of outer tube and realize adding cement and curing agent to the road bed on, outer tube lift structure drive outer tube rises and extracts the road bed, interior pole falls and inserts in road bed 40 in the interior pole lift structure drive, make the puddler stretch out and gather the water chamber (for example set up pull rope on the puddler and make the stirring board empty and the interior pole of extension), it is rotatory through interior pole revolution mechanic drive during interior pole rotation, thereby it is rotatory to realize stirring the road bed after adding cement and curing agent to drive the puddler when interior pole is rotatory. The stirring rod is provided with a supporting arm 35, and a supporting block 36 is arranged in the water collecting cavity; when the stirring rod is folded into the water collecting cavity, the supporting arm is supported on the supporting block, and the moment generated by the gravity of the stirring rod drives the supporting arm to be supported on the supporting block. The walking wheels of the two supporting seats are correspondingly supported in the drainage ditches on two sides of the roadbed one by one. The lifting plate is sleeved on a wire vertical rod 38 connected to the bearing seat.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A soft foundation embankment structure is characterized by comprising an embankment body, drainage ditches and a water collecting well, wherein the drainage ditches are located on two sides of a roadbed and used for draining water in a foundation, the water collecting well is provided with an inverted siphon used for draining the water in the water collecting well into a local water system, and the embankment body is supported on a surface hard shell layer formed by solidifying a foundation in situ.

2. The weak foundation embankment structure according to claim 1, wherein the embankment body comprises a roadbed top layer, two foundation layers and a plurality of heightening layers between the roadbed top layer and the foundation layers; the compacted thickness of the base layer is 43 cm-47 cm and 45 cm; the compaction thickness of the heightening layer is 20 cm-25 cm.

3. The weak foundation embankment structure according to claim 1 or 2, wherein a concrete support surface layer is provided in the drainage ditch.

4. A drainer for soft foundation embankment construction of the soft foundation embankment structure defined in claim 1, which comprises two supporting bases and a plurality of drainage units, wherein the supporting bases are provided with walking wheels, the drainage units comprise bearing bases, the upper surfaces of the bearing bases are provided with through grooves extending along the width direction of the roadbed, the bottom walls of the through grooves are provided with a plurality of vertical connecting holes, the bearing bases of all the drainage units are detachably connected together and the through grooves are butted together to form a drainage channel, the two ends of the drainage channel are connected with the two supporting bases, the two ends of the drainage channel are provided with a water outlet positioned above the drainage channel, the vertical connecting holes are connected with outer pipes inserted into the roadbed in a lifting manner, inner rods internally provided with water collecting cavities are arranged in the outer pipes in a lifting and rotating manner, the peripheral surfaces of the outer pipes are provided with water holes of outer pipe portions, the water hole of the outer pipe part is provided with a water filter screen, the water collecting cavity is provided with an inner rod part water hole which can be aligned with the water hole of the outer pipe part in a one-to-one correspondence manner, the upper end of the outer pipe is connected with the bearing seat through an outer pipe lifting structure, and the upper end of the inner rod is connected with an inner rod lifting structure and an inner rod rotating structure.

5. The drainer for constructing the weak foundation embankment according to claim 4, wherein all the water filters in the vertical holes of the outer pipe portions are connected together to form a filter pipe, and the filter pipe is inserted into the outer pipe.

6. The drainer for soft foundation embankment construction according to claim 4, wherein the upper end of the connection hole is provided with a protruding section protruding from the bottom wall of the drainage channel, and the upper end of the outer pipe is provided with a flange for blocking the protruding section.

7. The drainer for constructing the weak foundation embankment according to claim 4, wherein the wall of the water collecting cavity is hinged with a plurality of stirring rods which are distributed along the circumferential direction of the inner rod and can be folded into the water collecting cavity and extend out of the water collecting cavity through a horizontal hinge shaft; in the third step, concrete processes of adding cement and curing agent to the roadbed and then stirring the roadbed are as follows: interior pole rises for the last time and the log raft in will gathering the water cavity is discharged the back, thereby add cement and curing agent to the inner tube through the upper end of outer tube thereby realize adding cement and curing agent to the road bed in, outer tube elevation structure drive outer tube rises and extracts the road bed, thereby the pole descends and inserts in the road bed in interior pole elevation structure drive, makes the puddler stretch out and gathers the water cavity, and it is rotatory through interior pipe revolution mechanic drive interior pole, thereby the rotatory realization of pole is stirred the road bed after adding cement and curing agent when interior pole is rotatory.

8. The drainer for soft foundation embankment construction according to claim 7, wherein the stirring rod is provided with a support arm, and a support block is arranged in the water collection cavity; when the stirring rod is folded into the water collecting cavity, the supporting arm is supported on the supporting block, and the moment generated by the gravity of the stirring rod drives the supporting arm to be supported on the supporting block.

9. The drainer for soft foundation embankment construction according to claim 4, wherein the inner rod lifting structure comprises a lifting plate, a lifting plate lifting cylinder for supporting the lifting plate on the bearing seat, a motor connected to the lifting plate, a driving gear arranged on a power output shaft of the motor, and a plurality of driven gears which are correspondingly connected to the inner rod and meshed with the driving gear, wherein the inner rod can be rotatably arranged on the lifting plate in a penetrating manner and is provided with a stop block which is matched with the lifting plate to enable the lifting plate to lift the inner rod; the outer tube lifting mechanism is an outer tube lifting cylinder, one end of the outer tube lifting cylinder is connected with the outer tube, and the other end of the outer tube lifting cylinder is connected with the bearing seat.

10. The drainer for soft foundation embankment construction according to claim 4, wherein the traveling wheels of the two support bases are supported in the drainage ditch at both sides of the roadbed in one-to-one correspondence.

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