High fill roadbed

Abstract

The utility model belongs to the technical field of constructional engineering, and particularly relates to a high-fill roadbed which comprises an upper roadbed, an upper embankment, a lower roadbed, a lower embankment and a drainage pipe, the high-fill roadbed further comprises a reinforcing platform, and the reinforcing platform wraps the drainage pipe and provides compression resistance between the drainage pipe and the upper embankment. The reinforcing platform wrapping the drainage pipe is arranged, so that the loading performance and the fatigue resistance of the filling roadbed at the drainage pipeline are improved and the service life of the filling roadbed at the drainage pipeline is prolonged through the compression resistance between the drainage pipe and the upper embankment, and the use quality of the whole roadbed is further guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and specifically relates to a high fill roadbed. Background Art

[0002] High fill roadbed refers to a roadbed structure of a specific height that is set up in highway engineering based on stability calculation and verification in accordance with the provisions of the Highway Design Code. This roadbed structure is mainly used to increase the fill height of the roadbed to meet specific engineering needs, such as alleviating level crossing traffic interference, adjacent highway construction, and the setting of channel facilities across the highway. Under the action of the self-weight of the roadbed and the weight of the car, the high fill roadbed is prone to cracking, overall decline, and local decline. In the engineering design, the high fill roadbed is set as a multi-layer structure to ensure its permeability, load performance, fatigue resistance and service life.

[0003] Due to the high longitudinal height of the high embankment roadbed, especially in rice fields or areas with perennial waterlogging, drainage pipes are installed to connect both sides of the roadbed to avoid waterlogging. However, since the drainage pipes pass through the bottom or middle layer of the high embankment roadbed, the load performance, fatigue resistance and service life of the high embankment roadbed at the drainage pipes will be reduced, thereby affecting the overall roadbed quality. Utility Model Content

[0004] In view of this, the utility model provides a high embankment roadbed, and a reinforcement platform is arranged to wrap the drainage pipe, so as to improve the compression resistance between the drainage pipe and the upper embankment, thereby improving the load performance, fatigue resistance and service life of the embankment roadbed at the drainage pipe, thereby ensuring the use quality of the overall roadbed.

[0005] In order to achieve the above technical objectives, the specific technical solutions adopted by the utility model are:

[0006] A high fill roadbed, comprising:

[0007] The upper roadbed is exposed to the outside environment and is used to bear the road surface;

[0008] an upper embankment, disposed below the level of the upper roadbed, for providing a load to the road surface;

[0009] A lower roadbed is arranged between the upper embankment and the upper roadbed, is attached to the upper roadbed and the upper embankment, and is used to increase the load of the upper roadbed and provide a drainage carrier;

[0010] A lower embankment, arranged below the level of the upper embankment, and arranged in close contact with the upper embankment, for providing stability and support for the upper embankment;

[0011] a drainage pipe axially penetrating through the two sides of the lower embankment to provide a water passage between the two sides of the lower embankment;

[0012] The high fill roadbed further comprises a reinforcement platform, which wraps the drainage pipe and provides compression resistance between the drainage pipe and the upper embankment.

[0013] Furthermore, the cross section of the reinforcement platform is trapezoidal, and the bottom of the water level reaches the environmental base of the high fill roadbed.

[0014] Furthermore, the horizontal top of the reinforcement platform reaches the lower embankment.

[0015] Furthermore, the horizontal top of the reinforcement platform reaches the top of the lower embankment and fits the horizontal bottom of the lower roadbed.

[0016] Furthermore, the upper roadbed is a coarse sand layer or a graded crushed stone layer.

[0017] Furthermore, the upper embankment is a crushed stone layer, a crushed concrete layer or an asphalt concrete layer.

[0018] Furthermore, the lower embankment is an earth and stone layer.

[0019] Furthermore, the reinforcement platform is a stone soil layer, an industrial slag layer, a geofoam plastic, a bubble mixed lightweight soil layer or a reinforced embankment.

[0020] Furthermore, the thickness of the reinforcement platform is 0.3 to 0.8 meters.

[0021] By adopting the above technical solution, the utility model can bring the following beneficial effects:

[0022] The utility model is provided with a reinforcing platform wrapped around the drainage pipe, and the compression resistance between the drainage pipe and the upper embankment is improved, so as to improve the load performance, fatigue resistance and service life of the fill roadbed at the drainage pipe, thereby ensuring the service quality of the overall roadbed;

[0023] The cross section of the reinforcing platform of the utility model is a trapezoid, and the bottom of the water reaches the environmental base of the high fill roadbed, which can increase the bonding strength between the drainage pipe of the high fill roadbed and the environmental base, and avoid slight displacement caused by the change of bonding strength due to uneven materials;

[0024] The horizontal top of the reinforcement platform of the utility model can be set to reach the lower embankment, which can enhance the bonding strength between the reinforcement platform and the upper embankment;

[0025] The horizontal top of the reinforcing platform of the utility model can be set to reach the top of the lower embankment and fit the horizontal bottom setting of the lower roadbed, which can avoid the problem of increased construction difficulty of rollers and tamping machines due to the raised structure during construction, thereby reducing the construction difficulty as a whole.

[0026] The utility model adopts high-cost structural layers such as geofoam plastics only on the reinforcement platform, and still adopts traditional structural layers on the upper part, thereby avoiding excessive increase in the overall cost of the high fill roadbed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic cross-sectional view of a high fill roadbed in a specific implementation mode of the utility model;

[0029] Among them: 1. Upper roadbed; 2. Lower roadbed; 3. Upper embankment; 4. Lower embankment; 5. Drainage pipe; 6. Reinforcement platform. DETAILED DESCRIPTION

[0030] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0031] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0032] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0033] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. The drawings only show components related to the present disclosure rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0034] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0035] In one embodiment of the present invention, a high fill roadbed is provided, such as Figure 1 As shown, including:

[0036] The upper roadbed 1 is exposed to the external environment and is used to receive the road surface;

[0037] an upper embankment 3, arranged below the level of the upper roadbed 1, for providing load for the road surface;

[0038] The lower roadbed 2 is arranged between the upper embankment 3 and the upper roadbed 1, and is attached to the upper roadbed 1 and the upper embankment 3, so as to enhance the load of the upper roadbed 1 and provide a drainage carrier;

[0039] A lower embankment 4 is arranged below the upper embankment 3 and is arranged in close contact with the upper embankment 3 to provide stability and support for the upper embankment 3;

[0040] A drainage pipe 5 axially penetrates the two sides of the lower embankment 4 to provide a water channel between the two sides of the lower embankment 4;

[0041] The high fill roadbed further comprises a reinforcement platform 6 , which wraps the drainage pipe 5 and provides compression resistance between the drainage pipe 5 and the upper embankment 3 .

[0042] The upper roadbed 1, lower roadbed 2, upper embankment 3 and lower embankment 4 of this embodiment adopt traditional structures. The upper roadbed 1 is located at the top layer of the roadbed, with a thickness of generally 0 to 0.3 meters, and a compaction degree of greater than or equal to 96%, which is often referred to as the "96 zone". The lower roadbed 2 is located below the upper roadbed 1, generally 0.3 to 0.8 meters, and a compaction degree of greater than or equal to 96%, and belongs to the "96 zone" together with the upper roadbed 1. The upper embankment 3 is located below the lower roadbed 2, with a thickness of generally 0.8 to 1.5 meters, and a compaction degree of greater than or equal to 94%, which is often referred to as the "94 zone". The lower embankment 4 is located at the bottom layer of the roadbed, that is, below the upper embankment 3, with a thickness of less than 1.5 meters, and a compaction degree of greater than or equal to 93%, which is often referred to as the "93 zone".

[0043] The thickness of the reinforcing platform 6 in this embodiment is 0.3-0.8 meters, and the compaction degree should be greater than or equal to 96%.

[0044] In this embodiment, a reinforcing platform 6 is provided to wrap the drainage pipe 5, so as to improve the compression resistance between the drainage pipe 5 and the upper embankment 3, thereby improving the load performance, fatigue resistance and service life of the fill roadbed at the drainage pipe 5, thereby ensuring the service quality of the entire roadbed;

[0045] In this embodiment, the cross section of the reinforcing platform 6 is a trapezoid, and the bottom of the water reaches the environmental base of the high fill roadbed. This embodiment can increase the bonding strength between the high fill roadbed drainage pipe 5 and the environmental base, and avoid slight displacement caused by changes in bonding strength due to uneven materials;

[0046] In this embodiment, the upper roadbed 1 is a coarse sand layer or a graded crushed stone layer. The upper embankment 3 is a crushed stone layer, a crushed concrete layer or an asphalt concrete layer. The lower embankment 4 is an earth and stone layer. The reinforcing platform 6 is a stone soil layer, an industrial slag layer, a geofoam, a bubble mixed lightweight soil layer or a reinforced embankment. In this embodiment, only a high-cost structural layer such as geofoam is used on the reinforcing platform 6, and a traditional structural layer is still used above, which can avoid excessive increase in the overall cost of the high fill roadbed.

[0047] In one embodiment, the horizontal top of the reinforcing platform 6 is set to reach the lower embankment 4. This embodiment can enhance the bonding strength between the reinforcing platform 6 and the upper embankment 3;

[0048] In one embodiment, the horizontal top of the reinforcing platform 6 is set to reach the top of the lower embankment 4 and fit the horizontal bottom of the lower roadbed 2. This embodiment can avoid the problem of increased construction difficulty of rollers and tamping machines due to the raised structure during construction, thereby reducing the construction difficulty as a whole.

[0049] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A high fill roadbed, characterized in that: include: The upper roadbed is exposed to the outside environment and is used to bear the road surface; an upper embankment, disposed below the level of the upper roadbed, for providing a load to the road surface; A lower roadbed is arranged between the upper embankment and the upper roadbed, is attached to the upper roadbed and the upper embankment, and is used to increase the load of the upper roadbed and provide a drainage carrier; A lower embankment, arranged below the level of the upper embankment, and arranged in close contact with the upper embankment, for providing stability and support for the upper embankment; a drainage pipe axially penetrating through the two sides of the lower embankment to provide a water passage between the two sides of the lower embankment; The high embankment roadbed further comprises a reinforcement platform, which wraps the drainage pipe and provides compression resistance between the drainage pipe and the upper embankment.

2. The high fill roadbed according to claim 1, characterized in that: The cross section of the reinforcement platform is trapezoidal, and the bottom of the water level reaches the environmental base of the high fill roadbed.

3. The high fill roadbed according to claim 2, characterized in that: The horizontal top of the reinforcement platform reaches into the lower embankment.

4. The high fill roadbed according to claim 2, characterized in that: The horizontal top of the reinforcement platform reaches the top of the lower embankment and fits the horizontal bottom of the lower roadbed.

5. The high fill roadbed according to claim 1, characterized in that: The upper roadbed is a coarse sand layer or a graded crushed stone layer.

6. The high fill roadbed according to claim 1, characterized in that: The upper embankment is a crushed stone layer, a crushed concrete layer or an asphalt concrete layer.

7. The high fill roadbed according to claim 1, characterized in that: The lower embankment is an earth and stone layer.

8. The high fill roadbed according to claim 1, characterized in that: The reinforcement platform is a stone soil layer, an industrial slag layer, a geofoam plastic, a bubble mixed light soil layer or a reinforced embankment.

9. The high fill roadbed according to claim 1, characterized in that: The thickness of the reinforcement platform is 0.3 to 0.8 meters.

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