Pre-stress type EPS roadbed widening structure
By using protective shell sealing nuts in the EPS subgrade widening structure and using steel pad limit prestressing, the problems of nut slip wire and rust are solved, and the stability and service life of the subgrade are improved.
Patent Information
- Application Number
- CN202422424814.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-08
AI Technical Summary
In the EPS subgrade widening structure, the nuts and anchors are prone to slip wires and rust, resulting in reduced stress on the subgrade and affecting the stability and service life of the subgrade.
The nut is sealed in the protective shell with independent protection, and prestressed through the steel pad limit and stress components to ensure the stable position of the nut and prevent the subgrade settlement and water damage.
It improves the bearing capacity and service life of the roadbed, strengthens the close connection between the new and old roadbeds, and ensures the stability of the roadbed stress.
Smart Images
Figure CN223281136U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of EPS roadbed, in particular to a prestressed EPS roadbed widening structure. Background Art
[0002] EPS roadbed refers to a technology that uses expanded polystyrene as a roadbed material in road construction. In roadbed projects, EPS blocks are usually used as filling materials for the roadbed to reduce the weight of the roadbed and reduce the pressure on the underlying soil, thereby reducing the risk of uneven settlement. In order to ensure the overall stability and bearing capacity of the roadbed, it is necessary to pre-stress the roadbed with the help of anchor rods when widening the roadbed.
[0003] During the laying process of the current EPS roadbed widening structure, the nuts on the anchor rods are mostly tightened to pre-stress the roadbed. After long-term use of the roadbed, the nuts and anchor rods are easily affected by local settlement of the roadbed or underground water seepage, and the nuts are also more likely to rust, resulting in a decrease in roadbed stress and affecting the normal use of the roadbed.
[0004] Therefore, in view of the fact that the nuts of the existing EPS roadbed widening structure are prone to rust and thread stripping, resulting in a decrease in roadbed stress, a prestressed EPS roadbed widening structure can be designed. Through independent protection, the prestressed nuts can be sealed and protected to prevent roadbed settlement and water damage from affecting the position of the nuts, ensure the stability of roadbed stress, and ensure that the new and old roadbeds are tightly connected, thereby improving the roadbed bearing capacity, extending the service life of the roadbed, and enhancing the practical value of the widening structure. Utility Model Content
[0005] In order to overcome the problem of most EPS roadbed widening structures, after long-term use, the roadbed is affected by local settlement of the roadbed or underground water seepage, etc., and the nuts and anchor rods are prone to thread slippage, and the nuts are also more likely to rust, resulting in the problem of reduced roadbed stress.
[0006] The technical solution of the utility model is: a prestressed EPS roadbed widening structure, including a roadbed, an old roadbed, an expansion component, a stress component, a steel pad, a nut, a protective shell and an installation component; the old roadbed is arranged above the roadbed, one side of the old roadbed is arranged in a stepped shape, an expansion component is also arranged above the roadbed, a stress component is arranged on one side of the expansion component, multiple groups of stress components are arranged, a steel pad is arranged on the outside of one end of the stress component, a nut is arranged on one side of the steel pad, the nut is arranged on the outside of the stress component, a protective shell is arranged on the outside of the nut, and an installation component is arranged on one side of the protective shell.
[0007] Preferably, the old roadbed is fixed by setting a roadbed support, the old roadbed is used to fix the position of the expansion component, the steel pad is used to limit the nut, the nut is rotated to apply stress to the stress component, and the stress component is used to pre-stress the expansion component to ensure the stability and bearing capacity of the expansion component, and the protective shell position is fixed by installing the component, and the nut is protected by the protective shell, so as to avoid the roadbed settlement and water damage affecting the nut position, ensure the stability of the roadbed stress, ensure the close connection effect of the new and old roadbeds, and enhance the practical value of the widening structure.
[0008] Preferably, the expansion component includes a reinforced concrete layer, a gravel layer, an EPS filler layer, a pavement layer and a reinforced concrete baffle; a reinforced concrete layer is arranged above the roadbed, a gravel layer is arranged above the reinforced concrete layer, an EPS filler layer is arranged above the gravel layer, a reinforced concrete layer is also arranged above the EPS filler layer, a pavement layer is also arranged above the EPS filler layer, and a reinforced concrete baffle is arranged on one side of the pavement layer.
[0009] Preferably, the reinforced concrete layer is arranged on one side of the old roadbed, and two groups of reinforced concrete layers are arranged. The reinforced concrete layer is arranged above the roadbed, and the reinforced concrete layer is also arranged above the EPS filler layer.
[0010] Preferably, the stress component includes a reserved hole and a prestressed anchor rod; the pavement layer is provided with a reserved hole, the reinforced concrete baffle is also provided with a reserved hole, and the inner side of the reserved hole is provided with a prestressed anchor rod.
[0011] Preferably, multiple groups of reserved holes are provided, the reserved holes are provided horizontally and vertically respectively, the reserved holes penetrate the reinforced concrete layer, and one end of some of the reserved holes penetrates the old roadbed.
[0012] Preferably, the installation assembly includes an annular groove, an annular clamping plate, an annular connecting plate, mounting holes and fastening bolts; an annular groove is provided on the inner side of the pavement layer, an annular groove is also provided on the inner side of the reinforced concrete baffle, an annular clamping plate is provided on the bottom surface of the protective shell, an annular connecting plate is provided on the outer side of the protective shell, a mounting hole is provided on one side of the annular connecting plate, and a fastening bolt is provided on the inner side of the mounting hole.
[0013] Preferably, there are multiple groups of annular grooves, the annular clamping plates and the annular grooves are interlocked, there are multiple groups of mounting holes, the fastening bolts are threadedly connected to the pavement layer, and the fastening bolts are also threadedly connected to the reinforced concrete baffle.
[0014] The beneficial effects of the present invention are as follows: compared with the traditional EPS roadbed widening structure, most of them use the nuts on the anchor rods to pre-stress the roadbed. After the roadbed is used for a long time, it is easy to cause thread slippage between the nuts and the anchor rods due to the influence of local settlement of the roadbed or underground water seepage, and the nuts are also more likely to rust, resulting in a reduction of roadbed stress and affecting the normal use of the roadbed. The pre-stressed nuts are sealed and protected by independent protection, avoiding the influence of roadbed settlement and water damage on the position of the nuts, ensuring the stability of the roadbed stress, ensuring the close connection between the new and old roadbeds, thereby improving the roadbed bearing capacity, extending the service life of the roadbed, and enhancing the practical value of the widening structure; when pre-stressing the foundation, the old roadbed is fixed by setting a roadbed support, and the nut is limited by a steel pad. The nut is rotated to pre-stress the expanded foundation to ensure the stability and bearing capacity of the foundation, and the nut is protected by a protective shell to solve the problem that the nuts of most EPS roadbed widening structures are easy to rust and thread slippage, resulting in a reduction of roadbed stress, and enhance the stability of roadbed use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Shown is a three-dimensional structural schematic diagram of a prestressed EPS roadbed widening structure of the utility model;
[0016] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the expansion components of a prestressed EPS roadbed widening structure of the present invention;
[0017] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the stress components of a prestressed EPS roadbed widening structure of the present invention;
[0018] Figure 4 What is shown is a schematic diagram of the three-dimensional structure of the installation components of a prestressed EPS roadbed widening structure of the present invention.
[0019] Explanation of the accompanying symbols: 1. Roadbed; 2. Old roadbed; 201. Reinforced concrete layer; 202. Gravel layer; 203. EPS filler layer; 204. Pavement layer; 205. Reinforced concrete baffle; 301. Reserved hole; 302. Prestressed anchor rod; 303. Steel pad; 304. Nut; 4. Protective shell; 401. Annular groove; 402. Annular clamping plate; 403. Annular connecting plate; 404. Mounting hole; 405. Fastening bolt. DETAILED DESCRIPTION
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] See also Figure 1-Figure 4The utility model provides an embodiment: a prestressed EPS roadbed widening structure, including a roadbed 1, an old roadbed 2, an expansion component, a stress component, a steel pad 303, a nut 304, a protective shell 4 and an installation component; the old roadbed 2 is arranged above the roadbed 1, and one side of the old roadbed 2 is arranged in a stepped shape. An expansion component is also arranged above the roadbed 1, and a stress component is arranged on one side of the expansion component. The stress component is provided in multiple groups, a steel pad 303 is arranged on the outside of one end of the stress component, a nut 304 is arranged on one side of the steel pad 303, the nut 304 is arranged on the outside of the stress component, a protective shell 4 is arranged on the outside of the nut 304, and an installation component is provided on one side of the protective shell 4.
[0022] See also Figure 2-Figure 4 In this embodiment, the expansion component includes a reinforced concrete layer 201, a crushed stone layer 202, an EPS filler layer 203, a pavement layer 204 and a reinforced concrete baffle 205; a reinforced concrete layer 201 is arranged above the roadbed 1, a crushed stone layer 202 is arranged above the reinforced concrete layer 201, an EPS filler layer 203 is arranged above the crushed stone layer 202, a reinforced concrete layer 201 is also arranged above the EPS filler layer 203, a pavement layer 204 is also arranged above the EPS filler layer 203, and a reinforced concrete baffle is arranged on one side of the pavement layer 204. Plate 205, reinforced concrete layer 201 is set on one side of the old roadbed 2. Two groups of reinforced concrete layers 201 are set. Reinforced concrete layer 201 is set above roadbed 1. Reinforced concrete layer 201 is also set above EPS filler layer 203. The reinforced concrete layer 201 enhances the bearing capacity of the roadbed. The crushed stone layer 202 is used to timely drain the moisture inside the roadbed to avoid the impact of water damage on the roadbed. The EPS filler layer 203 effectively controls the differential settlement of the old roadbed 2 and the new roadbed. The pavement layer 204 ensures that the widened roadbed has the same flatness as the old roadbed 2.
[0023] The stress component includes a reserved hole 301 and a prestressed anchor rod 302; the pavement layer 204 is provided with a reserved hole 301, and the reinforced concrete baffle 205 is also provided with a reserved hole 301. The inner side of the reserved hole 301 is provided with a prestressed anchor rod 302, and the reserved hole 301 is provided with multiple groups. The reserved holes 301 are respectively provided horizontally and vertically. The reserved holes 301 pass through the reinforced concrete layer 201, and one end of some reserved holes 301 passes through the old roadbed 2. The insertion position of the prestressed anchor rod 302 is clearly defined through the reserved hole 301, and the nut 304 is rotated on the prestressed anchor rod 302 to prestress the roadbed; the installation component includes an annular groove 401, an annular clamping plate 402, an annular connecting plate 403, an installation hole 404 and a fastening bolt 405; the inner side of the pavement layer 204 is provided with an annular groove 401, and the reinforced concrete baffle 205 is provided with a An annular groove 401 is also provided on the inner side, an annular clamping plate 402 is provided on the bottom surface of the protective shell 4, an annular connecting plate 403 is provided on the outer side of the protective shell 4, a mounting hole 404 is provided on one side of the annular connecting plate 403, a fastening bolt 405 is provided on the inner side of the mounting hole 404, multiple groups of annular grooves 401 are provided, the annular clamping plate 402 and the annular clamping groove 401 are interlocked with each other, multiple groups of mounting holes 404 are provided, the fastening bolts 405 and the pavement layer 204 are threadedly connected to each other, and the fastening bolts 405 and the reinforced concrete baffle 205 are also threadedly connected to each other, and the annular clamping plate 402 is inserted into the annular groove 401 to ensure the sealing effect of the protective shell 4, and the annular connecting plate 403 is used to fix the position of the protective shell 4, and the fastening bolts 405 are rotated in the mounting hole 404 to fix the position of the annular connecting plate 403.
[0024] When laying the widened roadbed, a reinforced concrete layer 201 is laid on the roadbed 1 along the stepped side of the old roadbed 2, a crushed stone layer 202 is laid on the reinforced concrete layer 201, an EPS filler layer 203 is laid on the crushed stone layer 202, and another reinforced concrete layer 201 is laid on the EPS filler layer 203. A pavement layer 204 is laid on the reinforced concrete layer 201, and a reinforced concrete baffle 205 is poured on one side of the pavement layer 204.
[0025] During prestressing, multiple groups of reserved holes 301 are drilled downward on the pavement layer 204. At the same time, multiple groups of reserved holes 301 are drilled horizontally on one side of the reinforced concrete baffle 205. Prestressed anchor rods 302 are inserted into the reserved holes 301. Nuts 304 are fixed with steel pads 303. Nuts 304 are rotated to prestress the prestressed anchor rods 302.
[0026] Then, the annular clamping plate 402 is embedded in the annular clamping groove 401 so that the protective shell 4 covers the nut 304, and then the fastening bolt 405 is rotated in the mounting hole 404 on the annular connecting plate 403. Finally, the pavement layer 204 and the reinforced concrete baffle 205 are poured to cover the protective shell 4 so that the pavement layer 204 is flush with the pavement of the old roadbed 2.
[0027] Through the above steps, the old roadbed 2 is fixed by setting the roadbed 1, the old roadbed 2 is used to fix the position of the expansion component, the steel pad 303 is used to limit the nut 304, and the nut 304 is rotated to apply stress to the stress component, thereby using the stress component to pre-stress the expansion component to ensure the stability and bearing capacity of the expansion component, and the protective shell 4 is fixed by installing the component, and the nut 304 is protected inside by the protective shell 4.
[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.
Claims
1. A prestressed EPS roadbed widening structure, comprising a roadbed (1) and an old roadbed (2); characterized in that: The invention also includes an expansion component, a stress component, a steel pad (303), a nut (304), a protective shell (4) and an installation component; an old roadbed (2) is arranged above the roadbed (1), one side of the old roadbed (2) is arranged in a stepped shape, an expansion component is further arranged above the roadbed (1), a stress component is arranged on one side of the expansion component, multiple groups of stress components are arranged, a steel pad (303) is arranged on the outside of one end of the stress component, a nut (304) is arranged on one side of the steel pad (303), the nut (304) is arranged on the outside of the stress component, a protective shell (4) is arranged on the outside of the nut (304), and a installation component is arranged on one side of the protective shell (4).
2. The prestressed EPS roadbed widening structure according to claim 1, characterized in that: The expansion component comprises a reinforced concrete layer (201), a crushed stone layer (202), an EPS filler layer (203), a pavement layer (204) and a reinforced concrete baffle (205); a reinforced concrete layer (201) is arranged above the roadbed (1), a crushed stone layer (202) is arranged above the reinforced concrete layer (201), an EPS filler layer (203) is arranged above the crushed stone layer (202), a reinforced concrete layer (201) is also arranged above the EPS filler layer (203), a pavement layer (204) is also arranged above the EPS filler layer (203), and a reinforced concrete baffle (205) is arranged on one side of the pavement layer (204).
3. The prestressed EPS roadbed widening structure according to claim 2, characterized in that: A reinforced concrete layer (201) is arranged on one side of the old roadbed (2). Two groups of reinforced concrete layers (201) are provided. The reinforced concrete layer (201) is arranged above the roadbed (1). The reinforced concrete layer (201) is also arranged above the EPS filler layer (203).
4. The prestressed EPS roadbed widening structure according to claim 2, characterized in that: The stress component includes a reserved hole (301) and a prestressed anchor rod (302); the road surface layer (204) is provided with a reserved hole (301), the reinforced concrete baffle (205) is also provided with a reserved hole (301), and the inner side of the reserved hole (301) is provided with a prestressed anchor rod (302).
5. The prestressed EPS roadbed widening structure according to claim 4, characterized in that: The reserved holes (301) are provided in multiple groups. The reserved holes (301) are provided horizontally and vertically respectively. The reserved holes (301) penetrate the reinforced concrete layer (201). One end of some of the reserved holes (301) penetrates the old roadbed (2).
6. The prestressed EPS roadbed widening structure according to claim 4, characterized in that: The mounting assembly comprises an annular clamping groove (401), an annular clamping plate (402), an annular connecting plate (403), a mounting hole (404) and a fastening bolt (405); the inner side of the pavement layer (204) is provided with an annular clamping groove (401), the inner side of the reinforced concrete baffle (205) is also provided with an annular clamping groove (401), the bottom surface of the protective shell (4) is provided with an annular clamping plate (402), the outer side of the protective shell (4) is provided with an annular connecting plate (403), one side of the annular connecting plate (403) is provided with a mounting hole (404), and the inner side of the mounting hole (404) is provided with a fastening bolt (405).
7. The prestressed EPS roadbed widening structure according to claim 6, characterized in that: The annular groove (401) is provided with multiple groups, the annular clamping plate (402) and the annular groove (401) are interlocked, the mounting hole (404) is provided with multiple groups, the fastening bolt (405) and the road surface layer (204) are threadedly connected to each other, and the fastening bolt (405) and the reinforced concrete baffle (205) are also threadedly connected to each other.