CN214362628U - Roadbed structure - Google Patents

Abstract

The application provides a roadbed structure, this roadbed structure includes: a base plate; the side walls are arranged at two opposite ends of the bottom plate and are fixedly connected with the bottom plate, and the side walls are higher than the bottom plate to form accommodating grooves in a surrounding mode with the bottom plate; and the roadbed body is positioned in the accommodating groove and is paved on the upper surface of the bottom plate. Enclose through bottom plate and side wall and close and form the holding tank, the mode of road bed body setting in the holding tank can effectively prevent water infiltration to the holding tank in, can completely cut off surface water, groundwater outside the road bed body, effectively ensured the structural strength of road bed body.

Description

Roadbed structure

Technical Field

The application relates to the field of engineering construction, in particular to a roadbed structure.

Background

The roadbed structure is a component of a railway or a highway, is constructed above a foundation, and is used for bearing loads on rails or the foundation to ensure the structural stability of the rails or the foundation, and therefore needs to be firm enough to provide support for the rails or the foundation. Often can meet site environment complicacy so that roadbed structure appearance circumstances such as soaking, infiltration take place at the in-process of carrying out the roadbed structure construction, influence the structural strength of roadbed body, often adopt side slope retaining protective structure such as gravity type barricade, bank protection to handle among the correlation technique, have waterproof stagnant water effect relatively poor, the whole degree of safety of structure is lower, complicated environmental condition adaptability is lower scheduling problem, is difficult to satisfy relevant requirement.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present application provides a roadbed structure to solve the problem that the roadbed structure is soaked in water or seeps water.

The technical scheme of the embodiment of the application is realized as follows:

the embodiment of the application provides a roadbed structure, includes: a base plate; the side walls are arranged at two opposite ends of the bottom plate and are fixedly connected with the bottom plate, and the side walls are higher than the bottom plate to form accommodating grooves in a surrounding mode with the bottom plate; and the roadbed body is positioned in the accommodating groove and is paved on the upper surface of the bottom plate.

Further, the bottom plate extends in a first direction; the side walls comprise a first side wall and a second side wall, the first side wall is located on one side of the first direction, and the second side wall is located on the other side, opposite to the one side, of the first direction.

Further, the side wall and the bottom plate are of an integrated structure.

Further, still include: the escape canal, the escape canal is located in the holding tank, just the first side wall in escape canal laminate in the side wall.

Further, still include: the cable duct, the cable duct is located in the holding tank, the lateral wall of cable duct laminate in the escape canal with the relative second lateral wall of first lateral wall.

Further, the side wall is provided with a drain hole which penetrates through the side wall.

Further, still include: the roadbed body comprises a foundation bed surface layer, a foundation bed bottom layer and a embankment below the foundation bed, wherein the foundation bed surface layer, the foundation bed bottom layer and the embankment below the foundation bed are sequentially arranged from top to bottom.

Further, still include: the contact net stand, fixed set up in outside the holding tank, the lower extreme of contact net stand is fixed on the stand basis, the stand basis set up in ground outside the holding tank or setting are in being located in the soil slope of ground top.

Further, the side wall is fixedly connected with a sound barrier, and the sound barrier protrudes upwards from the top surface of the side wall.

The application provides a roadbed structure, this roadbed structure includes: a base plate; the side walls are arranged at two opposite ends of the bottom plate and are fixedly connected with the bottom plate, and the side walls are higher than the bottom plate to form accommodating grooves in a surrounding mode with the bottom plate; the embankment is located in the holding tank and is laid on the upper surface of the bottom plate. Enclose through bottom plate and side wall and close and form the holding tank, the mode that embankment setting was in the holding tank below foundation bed and the foundation bed can effectively prevent water infiltration to the holding tank in, can completely cut off earth's surface and underground water outside the road bed, has effectively ensured the structural strength of road bed.

Drawings

Fig. 1 is a schematic structural diagram of a roadbed structure according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of another roadbed structure provided by the embodiment of the application;

fig. 3 is a schematic structural diagram of another roadbed structure according to an embodiment of the present application.

Description of the reference numerals

100-roadbed structure; 110-a base plate; 120-side walls; 121-a sound barrier; 122-drain holes; 130-roadbed body; 131-bedding surface layer; 132-a bed bottom layer; 133-embankment under the bed; 140-a drain; 150-cable trough; 160-catenary columns; 161-column base.

Detailed Description

Various combinations of the specific features in the embodiments described in the detailed description may be made without contradiction, for example, different embodiments may be formed by different combinations of the specific features, and in order to avoid unnecessary repetition, various possible combinations of the specific features in the present application will not be described separately.

In the description of the embodiments of the present application, it should be noted that, unless otherwise specified and limited, the term "connected" should be interpreted broadly, for example, directly or indirectly through an intermediate, and the specific meaning of the term can be understood by those skilled in the art according to specific situations.

It should be noted that the terms "first \ second" and "first \ second" referred to in the embodiments of the present application are only used for distinguishing similar objects and do not represent a specific ordering for the objects, and it should be understood that "first \ second" and "first \ second" may be interchanged under a specific order or sequence where permitted. It should be understood that "first," "second" distinct objects may be interchanged under appropriate circumstances such that embodiments of the present application described herein may be implemented in an order other than those illustrated or described herein.

The roadbed structure can be divided into a railway roadbed structure and a highway roadbed structure according to the difference of corresponding vehicles; the railway roadbed structure can be divided into a roadbed of a common railway, a roadbed of a high-speed railway, a roadbed of urban rail transit and the like according to different set railway grades, functional requirements and geographical positions. The roadbed structure provided by the embodiment of the application can be applied to railway roadbed and highway roadbed, and can also be suitable for various grades and geographic positions. Based on the characteristics of a urban (suburban) railway, a roadbed structure will be described below by taking an example in which a roadbed structure is applied to the urban (suburban) railway.

The urban (suburban) railway provides fast, public transportation and large traffic service between central urban area and surrounding town group and town group. The urban rail transit system is a new transit mode between a main railway and urban rail transit, is different from common railways, high-speed railways and urban rail transit, and is generally positioned in a central urban area and nearby the central urban area. The conditions of high surface water level, underground water development, complex site environment conditions, limited land use and high requirement on the surrounding environment frequently occur in urban (suburban) railways, and the conventional geotechnical structure roadbed type or the conventional retaining protection structure type are adopted.

As shown in fig. 1, an embodiment of the present application provides a roadbed structure 100, wherein the roadbed structure 100 comprises: a bottom plate 110, a side wall 120, and a roadbed body 130. The bottom plate 110 is formed in a flat plate shape, and the side walls 120 are disposed at opposite ends of the bottom plate 110 and are fixedly coupled to the bottom plate 110. Specifically, the extending direction of the railway is taken as the length direction, the crossing direction of the railway is taken as the width direction, and the side walls 120 are arranged at two ends of the bottom plate 110 in the width direction; the side wall 120 may be divided into two parts, wherein one part of the side wall 120 is disposed at one end of the base plate 110, and the other part of the side wall 120 is disposed at the other end of the base plate 110 opposite to the one end. The side wall 120 is higher than the bottom plate 110 to form an accommodating groove by enclosing with the bottom plate 110, the bottom plate 110 and the side wall 120 divide the foundation and the accommodating groove, and soil, stones and water of the foundation cannot enter the accommodating groove. The roadbed body 130 is positioned in the accommodating groove and is laid on the upper surface of the base plate 110, and the roadbed body 130 and the foundation are separated by the base plate 110 and the side walls 120, so that the water on the ground surface and the water under the ground cannot permeate into the accommodating groove, the environment where the roadbed body 130 is positioned is dry, and the structural strength of the roadbed body 130 is guaranteed.

The application provides a roadbed structure, this roadbed structure includes: a base plate; the side walls are arranged at two opposite ends of the bottom plate and are fixedly connected with the bottom plate, and the side walls are higher than the bottom plate to form accommodating grooves in a surrounding mode with the bottom plate; the foundation bed and the roadbed body below the foundation bed are positioned in the accommodating groove and paved on the upper surface of the bottom plate. Enclose through bottom plate and side wall and close and form the holding tank, the mode that embankment setting was in the holding tank below foundation bed and the foundation bed can effectively prevent water infiltration to the holding tank in, can completely cut off earth's surface and underground water outside the roadbed body, has effectively ensured the structural strength of roadbed body.

The situation illustrated in fig. 1 is that the roadbed structure is present in the form of a cutting, alternatively the roadbed structure may also be present in the form of a embankment as illustrated in fig. 2 and 3. The roadbed is formed into a embankment in a filling mode, and the roadbed is formed into a cutting in an excavation mode. In short, the vehicle can be driven and the pedestrian can call the embankment above the ground; the part lower than the ground generally has a certain width and can also be called as cutting by pedestrians.

As shown in fig. 1, in some embodiments of the present application, the base plate 110 extends in a first direction (i.e., a direction perpendicular to the plane of the paper in fig. 1). The side walls 120 include a first side wall and a second side wall, wherein the first side wall is located at one side of the first direction (e.g., the left side in fig. 1) to prevent the soil and rock at the left side of the cutting from collapsing into the holding tank or water from infiltrating into the holding tank, and the second side wall is located at the other side (e.g., the right side in fig. 1) opposite to the one side of the first direction to prevent the soil and rock at the right side of the cutting from collapsing into the holding tank or water from infiltrating into the holding tank.

The outer side wall surfaces of the first side wall and the second side wall on the left side and the right side shown in the figure 1 are basically parallel to the surfaces in the vertical direction, namely, the side walls basically have no inclined slope, so that a side slope is not required to be arranged, the occupied land can be reduced, and the problems of complex environmental conditions and limited land use are solved well.

As shown in FIG. 1, in some embodiments of the present application, the side walls 120 and the bottom panel 110 are of unitary construction. Specifically, the side wall 120 and the bottom plate 110 may be both manufactured in a cast-in-place manner, for example, a formwork may be erected on a foundation, and then cement mortar and other materials are poured into the formwork, and after the cement mortar is cured, the formwork is removed, so that a structure in which the side wall 120 and the bottom plate 110 are combined into a whole may be formed; the side wall 120 and the bottom plate 110 may be fabricated in a prefabricated manner, for example, the integrally formed bottom plate 110 and the side wall 120 may be fabricated at a factory, and then transported to the vicinity of the foundation, and the integrated structure of the side wall 120 and the bottom plate 110 may be hoisted to the foundation by using a crane or the like. The integrally formed side wall 120 and the bottom plate 110 can ensure the structural strength between the side wall 120 and the bottom plate 110, ensure the position stability of the side wall 120 and prevent the displacement relative to the bottom plate 110 under the pressure of the earth and stones at the two sides of the cutting; and the waterproof capability of the connection part between the side wall 120 and the bottom plate 110 can be ensured, and the water of the foundation is ensured to be difficult to permeate into the accommodating tank through the connection part between the side wall 120 and the bottom plate 110, so that the stability of the environment in the accommodating tank is ensured.

As shown in fig. 1, in some embodiments of the present disclosure, the roadbed structure 100 further includes a drain 140, the drain 140 is located in the accommodating groove, and a first side wall (a side wall on the outer side in the width direction) of the drain 140 is attached to the side wall 120. Note that the fitting indicates a state in which the adjacent surfaces of the two are substantially overlapped with each other, and there is no significant gap therebetween, but it is not excluded that a partial region between the two has a small gap. The height of the water inlet of the drainage ditch 140 is lower than or equal to the height of the upper surface of the roadbed body 130. For example, in a state where the drainage ditch 140 is formed in a groove shape, an upper opening of the drainage ditch 140 is a water inlet of the drainage ditch 140, and water may rapidly flow into the drainage ditch 140 through the upper surface of the roadbed body 130, so as to drain water on the roadbed body 130, which is beneficial to keeping the environment of the roadbed body 130 dry. The drainage ditch 140 may be configured as a U-shaped groove, and specifically, the drainage ditch 140 has a bottom wall and two side walls, wherein the two side walls are both fixedly connected to the bottom wall, the bottom wall is attached to the bottom plate 110 or the roadbed body 130, one of the two side walls has a first side wall, and the first side wall is attached to the side wall 120.

Specifically, the drainage ditch 140 may be provided in two, wherein one drainage ditch 140 is provided at one side (e.g., the left side in fig. 1) in the first direction, and the first side wall of the drainage ditch 140 is attached to the left side wall 120, i.e., the drainage ditch 140 is provided at the left side in the holding tank; another drain 140 is disposed on the other side (right side in fig. 1) opposite to the one side in the first direction, and a first side wall of the drain 140 is attached to the right side wall 120, that is, the drain 140 is disposed on the right side in the accommodating groove. The upper surface of the roadbed body 130 may be arranged to be inclined downward gradually from the middle to both sides, so that the water flow on the left side of the roadbed body 130 may flow into the drainage ditch 140 on the left side through the upper surface of the roadbed body 130, and the water flow on the right side of the roadbed body 130 may flow into the drainage ditch 140 on the right side through the upper surface of the roadbed body 130. The slope at which the upper surface of the roadbed body 130 is inclined may be 2% to 6%, that is, a ratio of a height in the vertical direction from the middle of the upper surface of the roadbed body 130 to the edge of the upper surface of the roadbed body 130 to a height thereof in the horizontal direction is 2% to 6%, and may be 4%, for example. To ensure structural stability of the ballast body 130 and to ensure rapid inflow of water from the upper surface of the ballast body 130 into the drainage ditch 140.

Of course, only one drain may be provided, and one drain may be provided on one side (e.g., the left side in fig. 1) of the first direction, and the first side wall of the drain is attached to the left side wall. The bed may be provided with a slope inclined downward toward one side (e.g., left side) of the first direction, so that water such as rainwater on the bed may flow into the drainage ditch through the surface of the bed. The slope of the bed inclination may be 2% to 6%, i.e. the ratio of the height of one side of the bed to the other side of the bed in the vertical direction and its height in the horizontal direction is 2% to 6%, e.g. may be 4%. To ensure the stability of the bed structure and simultaneously ensure that water flow can rapidly flow from the surface of the bed to the drainage ditch.

As shown in fig. 1, in some embodiments of the present disclosure, the roadbed structure 100 further includes a cable trough 150, the cable trough 150 is located in the holding trough, a side wall of the cable trough 150 can be attached to a second side wall of the drainage ditch 140 opposite to the first side wall, that is, the drainage ditch 140 is located between the cable trough 150 and the side wall 120, water can flow into the drainage ditch 140 through a top surface of the cable trough 150, and the cable trough 150 is disposed at a position where the holding trough is close to an edge, so that influence on laying of the roadbed body 130 can be reduced, and the roadbed body 130 can be laid in the holding trough with enough space. The cable trough 150 may be provided in the form of a pipe, wires for transmission of communication, signals, power, etc. may be provided in the cable trough 150, and the cable trough 150 in the form of a pipe may protect the wires inside.

Specifically, two cable grooves 150 may be provided, wherein one cable groove 150 is provided at one side (for example, the left side in fig. 1) in the first direction, the side wall of the cable groove 150 is attached to the left drain 140, that is, the cable groove 150 is provided at the left side in the holding tank, and may provide a passage for the arrangement of the wires provided at the left side in the first direction; another cable groove 150 is disposed on the other side (right side in fig. 1) opposite to the one side in the first direction, and a first sidewall of the cable groove 150 fits the drainage ditch 140 on the right side, that is, the cable groove 150 is disposed on the right side in the accommodating groove, so as to provide a passage for the arrangement of the wires disposed on the right side in the first direction.

Of course, the cable trough may also be only one, one cable trough may be disposed on one side of the first direction (e.g., the left side in fig. 1), the side wall of the cable trough is attached to the left drainage ditch, that is, the cable trough is disposed on the left side of the accommodating groove, and all the wires may be uniformly disposed in the cable trough.

As shown in fig. 1, in some embodiments of the present application, the roadbed structure 100 further includes a catenary column 160, the catenary column 160 is disposed outside the accommodating tank, and the lower end of the catenary column 160 is fixed on a column foundation 161, the column foundation 161 is disposed on the ground outside the accommodating tank or in a soil slope above the ground. It should be noted that, in the case where the roadbed is shown in fig. 1 as a cutting form, the column foundations 161 may be disposed below the ground and the side wall surfaces are parallel to the vertical direction, that is, the column foundations 161 are disposed in an upright state, and there is no need to provide an inclined soil slope as a support, so that space can be saved. In the case where the roadbed is shown in fig. 2 in the form of an embankment, the column foundations 161 may be provided in an upright state below the ground or may be provided above the ground supported by a slope. The contact net stand 160 and the stand foundation 161 are both arranged outside the accommodating groove, and the space of the accommodating groove can not be occupied, so that the width of the bottom plate 110 can be effectively reduced, and the difficulty of engineering construction is reduced. The contact net stand 160 can provide the support for the contact net, and the contact net can be for walking the train power supply on the rail to satisfy the demand of train walking.

As shown in fig. 1, in some embodiments of the present application, the side wall 120 is fixedly connected with a sound barrier 121, and the sound barrier 121 protrudes upward from the top surface of the side wall 120. Specifically, in the case where the side wall 120 is divided into a first side wall and a second side wall, the sound barrier may be provided on both the top surface of the first side wall and the top surface of the second side wall. The sound barrier 121 can reduce the amount of sound transmitted from one side to the other side, and the sound barrier 121 arranged on the two sides of the rail can reduce the transmission of noise on the two sides of the rail and reduce noise pollution to residents along the rail. Optionally, the catenary pillar 160 is disposed outside the sound barrier 121, and a top surface of the catenary pillar 160 is higher than a top surface of the sound barrier 121.

As shown in fig. 1, in some embodiments of the present application, the roadbed body 130 includes a bed surface layer 131 and a bed bottom layer 132, and the bed surface layer 131 is laid on an upper surface of the bed bottom layer 132. The surface layer 131 of the foundation bed can adopt graded sand gravel to provide support for the rail and meet the damping requirement of the rail in the using process; plain concrete can be adopted below the surface layer of the foundation bed to meet the requirements of structural strength and drainage.

It should be understood by those skilled in the art that fig. 1 is a view of various technical means for arranging the roadbed in the form of cutting, and the technical means can also be used in the roadbed arranged in the form of embankment shown in fig. 2.

As shown in fig. 2, in some embodiments of the present disclosure, the roadbed body 130 further includes a below-bed embankment 133, the below-bed embankment 133 is paved on the upper surface of the bottom plate 110, and a basement layer 132 is paved on the above-surface of the below-bed embankment 133, that is, a basement skin 131, a basement layer 132, and the below-bed embankment 133 are sequentially arranged from top to bottom. The embankment 133 below the foundation bed may be made of compacted soil or the like to meet the design elevation requirement. That is, in a road section where the design elevation can be satisfied only by applying the foundation bed top layer 131 and the foundation bed bottom layer 132, the embankment 133 below the foundation bed may not be used, and in a road section where the foundation bed top layer 131 and the foundation bed bottom layer 132 cannot satisfy the design elevation, the embankment 133 below the foundation bed needs to be used to satisfy the requirement of the design elevation.

As shown in fig. 2, in some embodiments of the present invention, the side wall 120 is provided with a drainage hole 122, and the drainage hole 122 penetrates through the side wall 120 to communicate the inside of the receiving groove with the outside of the receiving groove. The outer ground height of holding tank is less than or equal to the height of drain pipe to the water inlet of drain pipe sets up in the bottom of holding tank, thereby can be by discharge to outside the holding tank in the drain pipe by the water of road bed body 130 surface infiltration road bed body 130 bottom, has further ensured road bed body 130's environment dry. The penetrating direction of the drainage hole 122 can be along the vertical direction of the first direction, and the penetrating direction of the drainage hole 122 gradually inclines downwards from the inside of the accommodating tank to the outside of the accommodating tank, so as to ensure that the water flow in the accommodating tank can flow out quickly.

It will be appreciated by those skilled in the art that the structure of the embankment 133 below the bed and the arrangement of the drain holes 122 illustrated in figure 2 above may also be applied to the various embodiments of the subgrade shown in figure 1 for use as a cutting.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (9)

1. A roadbed structure, comprising:

a base plate;

the side walls are arranged at two opposite ends of the bottom plate and are fixedly connected with the bottom plate, and the side walls are higher than the bottom plate to form accommodating grooves in a surrounding mode with the bottom plate;

and the roadbed body is positioned in the accommodating groove and is paved on the upper surface of the bottom plate.

2. The roadbed structure of claim 1, wherein the base slab extends in a first direction; the side walls comprise a first side wall and a second side wall, the first side wall is located on one side of the first direction, and the second side wall is located on the other side, opposite to the one side, of the first direction.

3. A roadbed structure according to claim 1 or 2, wherein the side walls and the base slab are of unitary construction.

4. A roadbed structure according to claim 1 or 2, further comprising: the escape canal, the escape canal is located in the holding tank, just the first side wall in escape canal laminate in the side wall.

5. The roadbed structure of claim 4, further comprising: the cable duct, the cable duct is located in the holding tank, the lateral wall of cable duct laminate in the escape canal with the relative second lateral wall of first lateral wall.

6. A roadbed structure as claimed in claim 1 or 2, wherein the side walls are provided with drainage holes which extend through the side walls.

7. A roadbed structure according to claim 1 or 2, further comprising: the roadbed body comprises a foundation bed surface layer, a foundation bed bottom layer and a embankment below the foundation bed, wherein the foundation bed surface layer, the foundation bed bottom layer and the embankment below the foundation bed are sequentially arranged from top to bottom.

8. A roadbed structure according to claim 1 or 2, further comprising: the contact net stand, fixed set up in outside the holding tank, the lower extreme of contact net stand is fixed on the stand basis, the stand basis set up in ground outside the holding tank or setting are in being located in the soil slope of ground top.

9. A roadbed structure according to claim 1 or 2, wherein the side walls are fixedly connected with sound barriers, which project upwards from the top surfaces of the side walls.

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