Method for reinforcing a road pavement base

Abstract

The application discloses a highway pavement base reinforcing method, which comprises the following steps: pouring a solidifying agent into a highway pavement base, and the pouring step is realized by a pouring assembly, wherein the pouring assembly comprises a guide cylinder, a guide main pipe and a guide branch pipe; the guide cylinder is vertically arranged on the highway pavement base and is a rigid hollow structure; the guide main pipe is vertically arranged on the guide cylinder; and the guide branch pipe is annularly arranged at the middle and lower parts of the guide main pipe. The application can improve the compressive strength of the highway pavement base, has the advantages of simple structure and convenient construction, reduces the transportation amount of building materials, and has good reinforcing effect and bearing effect.

Description

Technical Field

[0001] This invention relates to the field of highway construction technology. More specifically, this invention relates to a method for reinforcing the base course of a highway pavement. Background Technology

[0002] With the rapid development of my country's economy, the demand for efficient logistics and transportation is increasing, leading to higher requirements and standards for highway construction. The roadbed base layer bears the dynamic and static loads from vehicles and the pavement layer, while also transmitting and dispersing these loads deep into the foundation. Therefore, the quality of the roadbed base layer directly affects the overall quality of the highway. Highway construction is influenced by local topography and soil conditions. For example, in coastal areas of my country, the soft soil layers have high water content, low elevation, and high compressibility. Even with compaction, continuous vehicle traffic and long-term changes in load, coupled with rainwater impact and accumulation, can cause problems such as roadbed settlement, instability, and deformation. Summary of the Invention

[0003] This invention provides a method for reinforcing the base course of a highway pavement, which can improve the compressive strength of the base course of the highway pavement, has the advantages of simple structure and convenient construction, reduces the amount of building materials to be transported, and has good reinforcement and load-bearing effects.

[0004] To achieve these objectives and other advantages according to the present invention, a method for reinforcing a road pavement base course is provided, comprising injecting a curing agent into the road pavement base course, the injection step being performed by an injection assembly comprising:

[0005] A guide cylinder, which is vertically installed on the base layer of the highway pavement, is a rigid hollow structure;

[0006] A main guide pipe is vertically disposed on the guide cylinder. The axial length of the main guide pipe is greater than that of the guide cylinder, and the outer diameter of the main guide pipe is smaller than that of the guide cylinder. The top surface of the main guide pipe has a curing agent inlet and is a load-bearing surface. The bottom surface of the main guide pipe has a conical structure.

[0007] A flow guide branch is arranged in the lower middle part of the flow guide main. One end of the flow guide branch is connected and communicated with the flow guide main through a flexible tube. The other end of the flow guide branch is connected to the outer wall of the flow guide main through a guide spring. The flow guide branch is provided with a flow guide hole. The guide spring is configured such that its elastic force causes the flow guide branch to form a certain angle with the flow guide main.

[0008] Preferably, the main guide pipe has a bamboo-joint structure, with the uppermost part having the load-bearing surface and the curing agent inlet, and the lowermost part having the cone-shaped structure.

[0009] Preferably, the conical structure of the main flow guide is also connected to a barb.

[0010] Preferably, the method includes tightening both sides of the road surface base layer, the tightening step being achieved by a tightening assembly, which further includes:

[0011] The clamping structure includes a pair of clamping plates and a clamping sleeve. The pair of clamping plates are symmetrically arranged on both sides of the road surface base layer. The clamping plates are horizontally fixedly connected to a clamping shaft through a horizontal plate. The horizontal plate has a counterweight inside. The clamping shaft has external threads, and the external threads of the pair of clamping shafts have opposite directions of rotation. The clamping sleeve is horizontally arranged below the road surface base layer. The clamping sleeve has external threads and two sections of internal threads with opposite directions of rotation. The external threads of the pair of clamping shafts are simultaneously threadedly connected to the two sections of internal threads of the clamping sleeve. Rotating the clamping sleeve causes the pair of clamping plates to move closer together and move towards each other.

[0012] The traction structure includes a pair of traction plates, a pair of traction springs, and a pair of buffer springs. The outer sides of the pair of traction plates are connected to the inner sides of a pair of top plates via a pair of buffer springs. The buffer springs include an upper buffer spring and a lower buffer spring. The bottom of the pair of traction plates is connected to the horizontal plate via a hinge seat. Traction blocks are provided at the bottom of both sides of the road surface layer. The traction blocks have inclined traction surfaces. The inner sides of the pair of traction plates are connected to a pair of traction springs. The traction springs are inclined and connected to the inclined traction surfaces.

[0013] Preferably, the outer sides of the pair of top clamping plates are provided with angle steel reinforcing plates, which are connected to the road surface base layer by high-strength bolts.

[0014] Preferably, the traction spring is connected to an extension plate, and the inner sides of a pair of traction plates are connected to the extension plate via a hinge seat.

[0015] The present invention has at least the following beneficial effects:

[0016] First, this invention injects a curing agent into the road surface base layer. By setting up a guide tube, a main guide tube, and branch guide tubes, the curing agent can penetrate into the road surface base layer at different heights and widths, improving the compressive strength of the road surface base layer. The curing strength can be adjusted, which is conducive to speeding up the construction progress. It has the advantages of simple structure and convenient construction, reduces the amount of building materials to be transported, and has good reinforcement and load-bearing effects.

[0017] Secondly, this invention tightens both sides of the road surface base layer. When the road surface layer vibrates downwards, the traction spring and buffer spring work together to reduce or even eliminate the vibration transmitted to the tightening plate. A pair of tightening plates clamp the internal structure to prevent deformation and further strengthen the roadbed.

[0018] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of one technical solution of the present invention. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0021] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0022] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the reagents and materials mentioned are commercially available. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0023] like Figure 1 As shown, this invention provides a method for reinforcing the base course of a highway pavement. The base course is an existing layered structure, which may include, but is not limited to, rock-soil layers, gravel-soil layers, silt-soil layers, and compacted soil layers. The reinforcement method includes injecting a curing agent into the base course 5. The injection step is achieved through an injection assembly, which includes:

[0024] Guide cylinder 1 is vertically installed on the road surface base layer 5, and the guide cylinder 1 is a rigid hollow structure;

[0025] The main guide pipe 2 is vertically arranged on the guide cylinder 1. The axial length of the main guide pipe 2 is greater than that of the guide cylinder 1, and the outer diameter of the main guide pipe 2 is smaller than that of the guide cylinder 1. The top surface of the main guide pipe 2 has a curing agent inlet. The top surface of the main guide pipe 2 is a load-bearing surface, and the bottom surface of the guide pipe is a conical structure.

[0026] A flow guide branch pipe 3 is arranged in the lower middle part of the flow guide main pipe 2. One end of the flow guide branch pipe 3 is connected and communicated with the flow guide main pipe 2 through a flexible pipe. The other end of the flow guide branch pipe 3 is connected to the outer wall of the flow guide main pipe 2 through a guide spring. The flow guide branch pipe 3 is provided with a flow guide hole. The guide spring is configured such that its elastic force causes the flow guide branch pipe 3 and the flow guide main pipe 2 to form a certain angle.

[0027] In the above technical solution, by setting up a guide tube 1, a main guide tube 2, and a branch guide tube 3, the curing agent can penetrate into the road base layer at different heights and widths, thereby improving the compressive strength of the road base layer 5. The curing strength can be adjusted, which is conducive to speeding up the construction progress. It has the advantages of simple structure and convenient construction, reduces the amount of building materials to be transported, and has good reinforcement and load-bearing effects.

[0028] The guide cylinder 1 is a hollow cylindrical structure that can be driven deep into the road surface base layer 5 using a pile driver to compact the surrounding soil. The insertion depth of the guide cylinder 1 can be adjusted. The main guide pipe 2 is inserted into the guide cylinder 1. The top surface of the main guide pipe 2 is a load-bearing surface, and the bottom surface is a conical structure, allowing it to be inserted even deeper than the guide cylinder 1 using a pile driver. The outer periphery of the main guide pipe 2 is surrounded by guide branch pipes 3, forming concentric rings of guide branch pipes 3 at different heights. When the lower ring of guide branch pipes 3 is folded, it does not obstruct the upper ring of guide branch pipes 3, allowing for circumferential flow. In an interlaced or axially interlaced manner, when the main guide pipe 2 is inside the guide cylinder 1, the guide spring is compressed, and the guide branch pipe 3 is close to the main guide pipe 2. As the main guide pipe 2 is lowered to its lower end and gradually exposed, the guide springs are released from compression and naturally elongate. Their elastic force enables the guide branch pipe 3 to overcome the resistance of the surrounding soil layer and gradually form a certain angle with the main guide pipe 2 to reach a balanced position, i.e., it is inserted at different depths and widths. Then, high-pressure curing agent is pumped into the main guide pipe 2. The curing agent flows from the main guide pipe 2 to the guide branch pipe 3 and seeps into the surrounding soil layer through different guide holes.

[0029] During construction, due to differences in soil quality or construction requirements, the distance and height between adjacent guide cylinders 1 need to be different to achieve the best reinforcement effect. First, confirm the installation position, drive the guide cylinder 1 into the depth of the road surface base layer 5, and then send the sub-assembly formed by the main guide pipe 2 and the branch guide pipe 3 into the guide cylinder 1, and further drive the piles into the depth of the road surface base layer 5 below the guide cylinder 1. The elastic force of the guide spring causes the guide springs to gradually extend from bottom to top, so that the branch guide pipes 3 form a certain angle with the main guide pipe 2. Pull up the main guide pipe 2, and the reaction force of the branch guide pipe 3 fixes it deep in the road surface base layer 5. At this time, high-pressure curing agent is pumped into the main guide pipe 2 and enters the surrounding soil layer through the guide hole.

[0030] In another technical solution, the main guide pipe 2 has a bamboo-joint structure, with the uppermost part having the load-bearing surface and the curing agent inlet, and the lowermost part having the conical structure. The length of the main guide pipe 2 can be adjusted by detaching the bamboo-joint pipe body to accommodate different depths of the road surface base layer 5.

[0031] In another technical solution, the conical structure of the main diversion pipe 2 is also connected to a barb. The barb allows the pipe to be pulled out after the pile has been driven into place, with the barb inserting into the surrounding soil side in the opposite direction, further securing the circumferential stability of the main diversion pipe 2.

[0032] Because vehicles generate vibrations during operation, these vibrations are transmitted through the pavement layer 4 to the underlying road surface base layer 5. Prolonged or frequent vibrations can cause wear on the road surface base layer 5. Combined with the high static load of the pavement layer 4, this can lead to cracking between the pavement layer 4 and the road surface base layer 5. In another technical solution, the sides of the road surface base layer 5 are tightened together. This tightening step is achieved using a tightening assembly, which further includes:

[0033] The clamping structure includes a pair of clamping plates 9 and a clamping sleeve 8. The pair of clamping plates 9 are symmetrically arranged on both sides of the road surface base layer 5. The clamping plates 9 are horizontally fixedly connected to a clamping shaft 7 through a horizontal plate 13. The horizontal plate 13 is provided with a counterweight. The clamping shaft 7 is provided with external threads, and the external threads of the pair of clamping shafts 7 have opposite directions of rotation. The clamping sleeve 8 is horizontally arranged below the road surface base layer 5. The clamping sleeve 8 has external threads and two sections of internal threads with opposite directions of rotation. The external threads of the pair of clamping shafts 7 are simultaneously threadedly connected to the two sections of internal threads of the clamping sleeve 8. Rotating the clamping sleeve 8 causes the pair of clamping plates 9 to move closer together and move towards each other.

[0034] The traction structure includes a pair of traction plates 6, a pair of traction springs 10, and a pair of buffer springs 11. The outer sides of the pair of traction plates 6 are connected to the inner sides of a pair of top plates 9 through a pair of buffer springs 11. The buffer springs 11 include an upper buffer spring 11 and a lower buffer spring 11. The bottom of the pair of traction plates 6 is connected to the horizontal plate 13 through a hinge seat. Traction blocks 12 are provided at the bottom of both sides of the road surface layer 4. The traction blocks 12 have inclined traction surfaces. The inner sides of the pair of traction plates 6 are connected to a pair of traction springs 10. The traction springs 10 are inclined and connected to the inclined traction surfaces.

[0035] In the above technical solution, the road surface base layer 5 is tightened. When the road surface layer 4 vibrates downward, the traction spring 10 and the buffer spring 11 work together to reduce or even eliminate the vibration transmitted to the tightening plate 9. The pair of tightening plates 9 clamp the internal structure to avoid deformation and further strengthen the roadbed.

[0036] Install a top-tightening sleeve 8 and a pair of top-tightening shafts 7. The top-tightening sleeve 8 is mounted via a bearing seat, allowing it to rotate and restricting its horizontal movement. The top-tightening sleeve 8 has two internal threads with opposite directions, which can be threadedly connected to the pair of top-tightening shafts 7. The top-tightening sleeve 8 has external threads. Rotating the top-tightening sleeve 8 allows the pair of top-tightening shafts 7 to move closer or further apart, thereby adjusting their relative positions. Then, the pair of top-tightening shafts 7 are connected to a horizontal plate 13. The horizontal plate 13 is equipped with a counterweight, which greatly increases the pressure exerted by the horizontal plate 13 on the soil layer, thereby improving the stability of the connection between the pair of top-tightening plates 9 and the soil layer. This allows for adjustment of the distance between the pair of top-tightening plates 9 to meet the needs of actual work, improving the adaptability and flexibility of the equipment. Determine the installation position of the pair of top-tightening plates 9, and drive them deep into the road base layer using a pile driver. They are then fixedly connected to the horizontal plate 13 to form a top-tightening structure, which can reinforce and protect the road base layer 5. There is supporting force between the layers of components from the outside to the inside, which helps to save materials and reduce costs.

[0037] A pair of hinged seats are installed on a pair of horizontal plates 13, and then a pair of traction plates 6 are installed. The pair of traction plates 6 can swing relative to the horizontal plates 13. A pair of buffer springs 11 are installed on a pair of top plates 9. The buffer springs 11 include an upper buffer spring 11 and a lower buffer spring 11, which are connected to the upper and lower parts of the traction plates 6 respectively. When the traction plates 6 swing, the buffer springs 11 will contract and adjust accordingly when subjected to external force. The upper buffer spring 11 and the lower buffer spring 11 extend to different lengths to match the swing amplitude of the traction plates 6, thereby buffering the force and reducing the force of the pair of traction plates 6 on the pair of top plates 9, thereby improving the stability of the connection between the pair of top plates 9 and the road surface base layer 5, and indirectly improving the reinforcement effect of the road surface base layer 5. A traction block 12 is installed at the bottom of the road surface layer 4. The traction block 12 is a wedge-shaped block, and its inclined traction surface is connected to the traction spring 10. When the road surface is subjected to downward pressure, the pressure is transmitted to the traction spring 10. It can absorb the vibration generated by the vehicle driving above the road surface layer 4 and prevent wear inside the road surface base layer 5. When the road surface layer 4 sinks slightly, the traction block 12 can provide a supporting force through the traction spring 10 to prevent the road surface layer 4 from sinking. At the same time, the traction block 12 can also be used for shoulder drainage operation. The traction spring 10 drives the traction plate 6 to swing. A pair of top plates 9 and a pair of horizontal plates 13 form an external wrapping protection structure to further prevent deformation and reduce the impact of the vibration of the road surface layer 4 on the road surface base layer 5.

[0038] It can effectively provide temporary support for the vibration (dynamic load) on the top of the pavement layer 4, ensuring that it will not be damaged when subjected to vibration (dynamic load), effectively improving the compressive strength. Furthermore, it can change its bottom support effect according to the actual load, greatly improving the load-bearing capacity. It can not only provide support in a steady state, but also change the support effect and reinforcement force in a dynamic state, ensuring stability and reinforcement effect in a dynamic state.

[0039] In another technical solution, angle steel reinforcing plates are provided on the outer sides of a pair of top clamping plates 9, which are connected to the road surface base layer 5 by high-strength bolts. These plates are embedded and fixed in the soil layer. The number of angle steel reinforcing plates can be set according to the horizontal length of the top clamping plates 9, further strengthening the vertical stability of the top clamping plates 9 and increasing the strength of the connection structure between the road surface base layer 5 and the soil layer, thereby achieving the reinforcement of the road surface base layer 5.

[0040] In another technical solution, the traction spring 10 is connected to an extension plate, and the inner sides of a pair of traction plates 6 are connected to the extension plate via a hinge seat. The extension plate and the traction spring 10 are arranged coaxially. When the traction spring 10 is compressed, it presses against the extension plate, and the extension plate adjusts its swing angle, which more effectively transmits external force to the traction plates 6 and protects the service life of the traction spring 10.

[0041] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the invention will be readily apparent to those skilled in the art.

[0042] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for reinforcing the base course of a highway pavement, characterized in that, include: The application of a curing agent to the base course of a highway pavement is carried out using an application assembly, which includes: A guide cylinder, which is vertically installed on the base layer of the highway pavement, is a rigid hollow structure; A flow guide pipe is vertically disposed on the guide cylinder. The axial length of the flow guide pipe is greater than that of the guide cylinder, and the outer diameter of the flow guide pipe is smaller than that of the guide cylinder. The top surface of the flow guide pipe has a curing agent inlet. The top surface of the flow guide pipe is a load-bearing surface, and the bottom surface of the flow guide pipe has a conical structure. A flow guide branch pipe is arranged around the lower middle part of the main flow guide pipe. One end of the flow guide branch pipe is connected and communicates with the main flow guide pipe through a flexible tube. The other end of the flow guide branch pipe is connected to the outer wall of the main flow guide pipe through a guide spring. The flow guide branch pipe is provided with a flow guide hole. The guide spring is configured such that when the main flow guide pipe is located inside the guide cylinder, the guide spring is compressed and the flow guide branch pipe is close to the main flow guide pipe. When the main flow guide pipe is lowered to the lower end and gradually exposed, the elastic force of the guide spring makes the flow guide branch pipe form a certain angle with the main flow guide pipe. During construction, first confirm the installation location, drive the guide tube into the depth of the road surface base layer, then send the sub-assembly formed by the main diversion pipe and the branch diversion pipe into the guide tube, and further drive the pile into the depth of the road surface base layer below the guide tube. Pull out the main diversion pipe, and at this time pump high pressure curing agent into the main diversion pipe, which enters the surrounding soil layer through the diversion hole. The two sides of the road surface base layer are tightened together. The tightening step is achieved by a tightening assembly, which also includes: The clamping structure includes a pair of clamping plates and a clamping sleeve. The pair of clamping plates are symmetrically arranged on both sides of the road surface base layer. The clamping plates are horizontally fixedly connected to a clamping shaft through a horizontal plate. The horizontal plate has a counterweight inside. The clamping shaft has external threads, and the external threads of the pair of clamping shafts have opposite directions of rotation. The clamping sleeve is horizontally arranged below the road surface base layer. The clamping sleeve has external threads and two sections of internal threads with opposite directions of rotation. The external threads of the pair of clamping shafts are simultaneously threadedly connected to the two sections of internal threads of the clamping sleeve. Rotating the clamping sleeve causes the pair of clamping plates to move closer together and move towards each other. The traction structure includes a pair of traction plates, a pair of traction springs, and a pair of buffer springs. The outer sides of the pair of traction plates are connected to the inner sides of a pair of top plates via a pair of buffer springs. The buffer springs include an upper buffer spring and a lower buffer spring. The bottom of the pair of traction plates is connected to the horizontal plate via a hinge seat. Traction blocks are provided at the bottom of both sides of the road surface layer. The traction blocks have inclined traction surfaces. The inner sides of the pair of traction plates are connected to a pair of traction springs. The traction springs are inclined and connected to the inclined traction surfaces.

2. The method for reinforcing the base course of a highway pavement as described in claim 1, characterized in that, The main guide pipe has a bamboo-joint structure, with the uppermost part having the load-bearing surface and the curing agent inlet, and the lowermost part having the cone-shaped structure.

3. The method for reinforcing the base course of a highway as described in claim 1, characterized in that, The conical structure of the main flow guide is also connected to a barb.

4. The method for reinforcing the base course of a highway pavement as described in claim 1, characterized in that, Angle steel reinforcement plates are provided on the outer sides of a pair of top clamping plates, which are connected to the road surface base layer by high-strength bolts.

5. The method for reinforcing the base course of a highway pavement as described in claim 1, characterized in that, The traction spring is connected to an extension plate, and the inner sides of a pair of traction plates are connected to the extension plate via hinge seats.

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