CN113373751A

CN113373751A - Roadbed anti-settlement structure containing light materials

Info

Publication number: CN113373751A
Application number: CN202110652741.8A
Authority: CN
Inventors: 云峰; 贾勋涛; 韩佳琦; 祝河清; 张肖虎; 王东乐; 田鹏博; 李志东
Original assignee: Cccc Shec Meng Xing Engineering Co ltd
Current assignee: Cccc Shec Meng Xing Engineering Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-09-10
Anticipated expiration: 2041-06-09
Also published as: CN113373751B

Abstract

The invention discloses a roadbed anti-settlement structure containing a light material, and belongs to the technical field of highway anti-settlement structures. The profiled steel sheet of the subgrade anti-settling layer is provided with at least two layers from top to bottom; the lower end of a first support body of the settlement compensation mechanism is connected with two oblique planes at the top end of a second support body in a sliding manner, the oblique planes at the two sides of the sliding connection piece are provided with straight angle teeth which are matched with each other along the slope direction of the oblique planes, a first spring is arranged between the second support body and a third support body, the vertex angle of an L-shaped pressure lever is hinged at the top of the third support body, the outermost end of one edge of the L-shaped pressure lever is positioned at the bottom of the second support body, and the outermost end of the other edge of the L-shaped pressure lever is connected with the lowest end of the oblique planes of the first support body; the light filler is filled between the upper and lower layers of profiled steel sheets. The invention reduces the weight of the filled embankment to reduce the settlement of the embankment, and compensates the settlement caused by the overweight load of the road surface by the settlement compensation mechanism, thereby prolonging the service life of the road.

Description

Roadbed anti-settlement structure containing light materials

Technical Field

The invention relates to the technical field of highway anti-settlement structures, in particular to a roadbed anti-settlement structure containing a light material.

Background

The subgrade settlement has direct influence on the operation of the highway, and the analysis and the treatment of the subgrade settlement problem have direct influence on the progress, the engineering quality and the safety of the highway construction. At present, the traffic transportation industry in China is continuously developed vigorously, the requirement of highway construction on the stability of a roadbed is continuously improved, and the problem of roadbed settlement is a main factor related to the stability of the highway construction, so that the problem of roadbed settlement is properly solved in the highway construction, and the normal operation of the highway construction is ensured.

The settlement of the highway subgrade can bring about great adverse effects, firstly, the intact subgrade can be damaged, and then the pavement structure is damaged under the action of external force, after the subgrade sinks, the deformation of an internal filling soil strain area causes uneven settlement, so that filling cracks are caused, the subgrade does not have enough tensile strength in the filling area so as to cause cracks, and further the problems of pavement deformation, pit concavity, arching and the like are caused, so that once the settlement of the highway subgrade occurs, a series of adverse effects can be caused, and the serious effects can be caused on the service cycle of the highway and the driving safety.

The settlement of the roadbed in the embankment engineering of the high-grade highway on the soft soil foundation is inevitable, and particularly, the settlement is more obvious after the road is used for a period of time, so that the effective prevention of the settlement problem of the highway on the soft soil foundation is the key for ensuring the quality of the whole highway, the settlement prevention treatment mode of the traditional soft soil roadbed has poor effect, the disturbance to the soft soil foundation is increased, and a new roadbed settlement prevention structure needs to be developed.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provide a subgrade anti-settlement structure containing light materials.

The invention provides a roadbed anti-sedimentation structure containing a light material, which sequentially comprises a soft soil layer, a waterproof layer, a foam concrete layer and a poured pavement layer from bottom to top, and is characterized in that an anti-sedimentation layer is also arranged between the waterproof layer and the foam concrete layer, and the anti-sedimentation layer comprises:

the profiled steel sheet is provided with two layers from top to bottom;

the settlement compensation mechanisms are uniformly distributed between an upper layer of profiled steel sheet and a lower layer of profiled steel sheet, each settlement compensation mechanism comprises a first support body, a second support body, a third support body, a first spring and an L-shaped pressure lever which are sequentially arranged from top to bottom, the lower end of the first support body and the top end of the second support body are provided with inclined planes which are matched with each other, the middle parts of the two inclined planes are provided with a sliding connection piece used for connecting the first support body and the second support body along the inclined plane gradient direction, the inclined planes at the two sides of the sliding connection piece are also provided with right-angle teeth which are matched with each other along the inclined plane gradient direction, the first spring is arranged between the second support body and the third support body, the top angle of the L-shaped pressure lever is hinged at the top part of the third support body, the outermost end of the horizontal edge of the L-shaped pressure lever is positioned at the bottom part of the second support body, and the vertical edge of the L-shaped pressure lever is arranged outside the third support body, and the outermost end of the first support body is connected with the lowest end of the inclined plane of the first support body;

and the light filler is filled in a space formed by the upper and lower layers of profiled steel sheets and the settlement compensation mechanism.

Preferably, a cavity is formed in the third support body, an insertion section is arranged at the bottom of the second support body and can be inserted into the cavity, the cavity is further communicated with a plurality of filler inlets, and the filler inlets are used for enabling fillers between the upper profiled steel sheet and the lower profiled steel sheet to enter the cavity.

Preferably, the EPS board body is further included, the bottom of the EPS board body is matched with the upper surface of the upper laminated steel plate in shape, a plurality of filling holes are formed in the EPS board body, EPS particles are filled in the filling holes, and a plurality of through holes used for enabling the EPS particles to enter between the upper laminated steel plate and the lower laminated steel plate are formed in the upper laminated steel plate.

Preferably, the sliding connection piece comprises a dovetail groove arranged along the inclined surface of the first support body and a dovetail slide block arranged along the inclined surface of the second support body, and the dovetail slide block is in sliding connection with the dovetail groove.

Preferably, the lowest end of the inclined plane of the first support body is connected with the end part of the L-shaped pressure lever through a second spring.

Preferably, the lightweight filler is a mixture of EPS particles and a water absorbing agent.

Preferably, the first spring is externally sleeved with a telescopic sleeve.

Preferably, a pressure sensor is arranged between the second support body and the third support body, the pressure sensor is arranged at the joint of the second support body or the third support body and the first spring, and the pressure sensor is in signal connection with the control center.

Preferably, the soft soil layer is provided with drain holes on both sides of the roadbed, and the outside of the drain holes is provided with a drainage channel.

Preferably, an inverted filter layer is arranged between the water drainage hole and the roadbed.

Compared with the prior art, the invention has the beneficial effects that: the subgrade anti-settlement structure resists the subgrade settlement problem caused by the falling of a soft soil layer or the overlarge self weight of the subgrade by arranging the anti-settlement layer, on one hand, the subgrade material of the invention is mostly made of light materials, and on the other hand, the bottom of the anti-settlement layer is provided with the waterproof layer and the drainage structure to drain the water in the soft soil layer in time; the profiled steel sheet of the anti-settling layer is used for enabling the light filler to be in a certain space area and ensuring the distribution uniformity of the light filler, and meanwhile, the profiled steel sheet has certain plasticity and can resist stress change caused by settling on the basis of improving the overall strength of the settling layer, so that the stability of a roadbed is ensured;

the settlement compensation mechanism is uniformly distributed between the upper and lower profiled steel sheets and can compensate subgrade settlement caused by overweight bearing of a road surface, the first support body and the second support body are connected in a sliding manner, when the road surface is settled due to overweight bearing, the first support body slides down along the inclined plane of the second support body, and in the process of sliding down, the first support body is also connected with the L-shaped pressure lever which is hinged on the top surface of the third support body, so that the part of the L-shaped pressure lever, which is positioned at the bottom of the second support body, can apply upward supporting force to the second support body after being pressed, the heights of the first support body and the second support body are integrally lifted, the displacement change caused by the sliding of the first support body and the second support body is compensated, and the lifting of the heights of the first support body and the second support body is effective only after the first support body and the second support body slide due to the external force of the laminated board, therefore, the two are performed cooperatively, compensate each other, and do not need the participation of external equipment.

The third support body is internally provided with the cavity which is communicated with the filler inlet, so that the filler enters the cavity through the filler inlet after the insertion section is lifted, the second support body is further supported, and the stability of the whole sedimentation compensation mechanism is ensured.

The invention can reduce the compression deformation of the foundation and reduce the settlement of the embankment by reducing the weight of the filled embankment, and simultaneously, the settlement compensation mechanism compensates the settlement caused by the overweight bearing of the road surface, thereby prolonging the service life of the road and ensuring the driving safety of the road.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the settlement compensating mechanism of the present invention;

FIG. 3 is a schematic structural diagram of a first supporting body according to the present invention;

fig. 4 is a schematic structural diagram of a second support body according to the present invention.

Description of reference numerals:

1. the concrete-filled concrete composite floor comprises a soft soil layer, 2 a waterproof layer, 3 a foam concrete layer, 4 a poured pavement layer, 5 a settlement-proof layer, 6 a profiled steel sheet, 7 a settlement compensation mechanism, 71 a first support body, 72 a second support body, 721 an insertion section, 73 a third support body, 731 a cavity, 732 a filler inlet, 74 a first spring, 75 an L-shaped compression bar, 8 a light filler, 9 an oblique plane, 10 a dovetail groove, 11 a dovetail slide block, 12 right-angled teeth, 13 a drain hole, 14 a drain groove, 15 a reverse filter layer, 16 an EPS plate body and 17 a second spring.

Detailed Description

Detailed description of the preferred embodimentsthe following detailed description of the present invention will be given with reference to the accompanying drawings 1-4, but it should be understood that the scope of the present invention is not limited to the specific embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Example 1

The invention provides a roadbed anti-sedimentation structure containing a light material, which sequentially comprises a soft soil layer 1, a waterproof layer 2, a foam concrete layer 3 and a poured pavement layer 4 from bottom to top, and is characterized in that an anti-sedimentation layer 5 is also arranged between the waterproof layer 2 and the foam concrete layer 3, and the anti-sedimentation layer 5 comprises:

the profiled steel sheet 6 is provided with two layers from top to bottom;

the settlement compensation mechanisms 7 are uniformly distributed between the upper and lower layers of profiled steel sheets 6, each settlement compensation mechanism 7 comprises a first support body 71, a second support body 72, a third support body 73, a first spring 74 and an L-shaped pressure lever 75 which are sequentially arranged from top to bottom, the lower end of the first support body 71 and the top end of the second support body 72 are provided with inclined planes 9 which are matched with each other, the middle parts of the two inclined planes 9 are provided with a sliding connection piece used for connecting the first support body 71 and the second support body 72 along the inclined plane gradient direction, the inclined planes at the two sides of the sliding connection piece are also provided with right-angled teeth 12 which are matched with each other along the inclined plane gradient direction, the first spring 74 is arranged between the second support body 72 and the third support body 73, the vertex angle of the L-shaped pressure lever 75 is hinged at the top of the third support body 73, the outermost end of the horizontal edge of the L-shaped pressure lever 75 is positioned at the bottom of the second support body 72, the vertical edge of the L-shaped pressure lever 75 is arranged outside the third support body 73, and the outermost end of the L-shaped pressure lever is connected with the lowest end of the inclined surface of the first support body 71;

and the light filler 8 is filled in a space formed by the upper and lower layers of profiled steel sheets 6 and the settlement compensating mechanism 7.

In the embodiment, the settlement of the soft soil layer 1 is prevented by arranging the settlement prevention layer 5, specifically, the settlement prevention layer comprises two layers of profiled steel plates 6 arranged above and below and settlement compensation mechanisms 7 arranged between the two layers of profiled steel plates 6, in the embodiment, the first support body 71 and the second support body 72 of each settlement compensation mechanism 7 are connected in a sliding way through inclined planes arranged oppositely, so that the first support body 71 and the second support body 72 can be connected into a whole and can generate certain displacement to resist the change of external stress, and as shown in fig. 3-4, the first support body 71 can only move downwards relative to the second support body 72, but the second support body 72 cannot move upwards relative to the first support body 71, so that when the first support body 71 slides downwards along the inclined planes, a downward thrust can be applied to the L-shaped compression bar 75, because the L-shaped press rod 75 is hinged to the third support 73, the other end of the L-shaped press rod 75 tilts upwards to provide an upward supporting force for the second support 72, and the second support 72 does not slide upwards relative to the first support 71, so that the second support 72 can only be lifted synchronously with the first support 71 under the supporting force, and the lifting of the overall height of the first support 71 and the second support 72 is realized, so as to compensate the height difference caused by the sliding down height and the sedimentation of the first support 71, and realize the effective support of the upper layer structure. The light filler 8 is used for filling the gap between the upper and lower laminated steel plates 6 and the settlement compensation mechanism 7, and supporting the upper and lower laminated steel plates 6, so that the excessive deformation caused by external force is avoided, and the stability of the whole roadbed is ensured.

Example 2

On the basis of embodiment 1, in order to further improve the compensation sedimentation, a cavity 731 is provided in the third supporting body 73, an insertion section 721 is provided at the bottom of the second supporting body 72, the insertion section 721 can be inserted into the cavity 731, and the cavity 731 is further communicated with a plurality of filler inlets 732 for allowing the filler between the upper and lower profiled steel plates 6 to enter the cavity 731.

In this embodiment, when the second supporting body 72 is lifted, the inserting section 721 at the bottom thereof moves upwards to form a gap with the cavity 731, and the light filler enters the gap between the cavity 731 and the inserting section 721 through the filler inlet to support the inserting section 721 and ensure the high stability thereof.

Example 3

On the basis of embodiment 2, as part of the filler enters the cavity 731, the light filler 8 between the upper and lower laminated steel plates 6 is reduced, and the reinforcing and supporting effects on the profiled steel plates 6 and the settlement compensation mechanism 7 are affected, the EPS plate body 16 is further included in this embodiment, the bottom of the EPS plate body 16 is matched with the upper surface of the upper laminated steel plate 6 in shape, a plurality of filling holes are formed in the EPS plate body 16, the EPS particles are filled in the filling holes, and a plurality of through holes for the EPS particles to enter between the upper and lower laminated steel plates 6 are formed in the upper laminated steel plate 6.

In this embodiment, the EPS plate 16 is made of a light material, and a plurality of filling holes are further formed in the EPS plate, the EPS particles are filled in the filling holes, and a plurality of through holes for the EPS particles to enter between the upper and lower steel profiled plates 6 are formed in the upper steel profiled plate 6, so that when the light filler between the steel profiled plates 6 is reduced, the EPS particles can enter between the steel profiled plates 6 through the through holes for replenishment, and the filling amount of the light material between the steel profiled plates 6 is ensured.

Preferably, the sliding connector includes a dovetail groove 10 along the inclined surface of the first support 71, and a dovetail slider 11 along the inclined surface of the second support 72, and the dovetail slider 11 is slidably connected to the dovetail groove 10.

Preferably, the lowest end of the inclined surface of the first support 71 is connected to the end of the L-shaped press lever 75 through the second spring 17. The gliding speed of the first supporting body 71 is buffered through the second spring 17, and the phenomenon that the gliding speed is too high to cause large disturbance to a road base is avoided.

As a preferable mode, the light filler 8 is a mixture of EPS particles and a water absorbing agent. The proportion relation of EPS granule and water absorbent carries out the humidity of soft soil layer according to actual conditions and suitably adjusts, and the effect of water absorbent lies in adsorbing moisture, ensures the mobility of EPS granule, makes it can get into in cavity 731 through the filler entry smoothly.

Preferably, a telescoping tube is disposed around the exterior of the first spring 74. The telescopic tube functions to restrict the first spring 74 from being deformed only in the height direction.

Preferably, a pressure sensor is arranged between the second support 72 and the third support 73, the pressure sensor is arranged at the joint of the second support 72 or the third support 73 and the first spring 74, and the pressure sensor is in signal connection with the control center. The aim is to know the spacing between the second support 72 and the third support 73 by monitoring the pressure value variation of the pressure sensor in order to evaluate the effectiveness of the sedimentation compensation mechanism 7.

Preferably, the soft soil layer 1 is provided with drain holes 13 on both sides of the roadbed, and the outside of the drain holes 13 is provided with drainage channels 14. The water in the soft soil layer 1 is timely discharged, so that the subgrade settlement is prevented.

Preferably, an inverted filter 15 is further provided between the water discharge hole 13 and the roadbed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a roadbed prevents subsiding structure containing light material includes soft soil layer (1), waterproof layer (2), foam concrete layer (3) and pours pavement layer (4) from bottom to top in proper order, a serial communication port, still be equipped with between waterproof layer (2) and foam concrete layer (3) and prevent subsiding layer (5), prevent subsiding layer (5) and include:

the profiled steel sheet (6) is arranged in two layers from top to bottom;

the settlement compensation mechanisms (7) are multiple in number and uniformly distributed between an upper layer of profiled steel sheet and a lower layer of profiled steel sheet (6), each settlement compensation mechanism (7) comprises a first support body (71), a second support body (72), a third support body (73), a first spring (74) and an L-shaped pressure lever (75) which are sequentially arranged from top to bottom, oblique planes (9) which are mutually matched are arranged at the lower end of the first support body (71) and the top end of the second support body (72), sliding connecting pieces used for connecting the first support body (71) and the second support body (72) are arranged in the middle of the two oblique planes (9) along the slope direction of the oblique planes, right-angled teeth (12) which are mutually matched are also arranged on the oblique planes at the two sides of the sliding connecting pieces along the slope direction of the oblique planes, the first spring (74) is arranged between the second support body (72) and the third support body (73), and the top angle of the L-shaped pressure lever (75) is hinged at the top of the third support body (73), the outermost end of the horizontal edge of the L-shaped pressure lever (75) is positioned at the bottom of the second support body (72), the vertical edge of the L-shaped pressure lever (75) is arranged outside the third support body (73), and the outermost end of the L-shaped pressure lever is connected with the lowest end of the inclined surface of the first support body (71);

and the light filler (8) is filled in a space formed by the upper and lower layers of profiled steel sheets (6) and the settlement compensating mechanism (7).

2. The roadbed anti-settling structure comprising a light material as claimed in claim 1, wherein a cavity (731) is arranged in the third supporting body (73), the bottom of the second supporting body (72) is provided with an insertion section (721), the insertion section (721) can be inserted into the cavity (731), and the cavity (731) is further communicated with a plurality of filler inlets (732) which are used for enabling fillers between the upper and lower profiled steel plates (6) to enter the cavity (731).

3. The roadbed anti-settlement structure containing the lightweight material as claimed in claim 1, further comprising an EPS plate body (16), wherein the bottom of the EPS plate body (16) is matched with the upper surface shape of the upper laminated steel plate (6), a plurality of filling holes are arranged on the EPS plate body (16), the filling holes are filled with EPS particles, and a plurality of through holes for the EPS particles to enter between the upper laminated steel plate and the lower laminated steel plate (6) are arranged on the upper laminated steel plate (6).

4. A roadbed subsidence prevention structure containing a lightweight material as claimed in claim 1, wherein the sliding connection member includes a dovetail groove (10) provided along an inclined surface of the first support body (71), and a dovetail slider (11) provided along an inclined surface of the second support body (72), the dovetail slider (11) being slidably connected with the dovetail groove (10).

5. A subgrade anti-settlement structure containing lightweight materials according to claim 1, characterized in that the lowest end of the slope of the first support body (71) is connected with the end of the L-shaped compression bar (75) through a second spring (17).

6. A subgrade anti-settlement structure containing lightweight materials according to claim 1, characterized in that the lightweight filler (8) is a mixture of EPS particles and a water absorbing agent.

7. A subgrade anti-settlement structure containing a lightweight material according to claim 1, characterized in that the outside of the first spring (74) is sleeved with a telescopic tube.

8. A subgrade anti-settlement structure containing lightweight materials according to claim 1, characterized in that a pressure sensor is arranged between the second support body (72) and the third support body (73), the pressure sensor is arranged at the joint of the second support body (72) or the third support body (73) and the first spring (74), and the pressure sensor is in signal connection with a control center.

9. The roadbed anti-settlement structure containing the lightweight material as claimed in claim 1, wherein the soft soil layer (1) is provided with drainage holes (13) on both sides of the roadbed, and drainage grooves (14) are provided on the outer sides of the drainage holes (13).

10. A subgrade anti-settlement structure containing lightweight materials according to claim 9, characterized in that an inverted filter (15) is arranged between the drainage hole (13) and the subgrade.