CN113914145A - Tramcar embedded roadbed light structure for protecting municipal pipeline and construction method - Google Patents
Tramcar embedded roadbed light structure for protecting municipal pipeline and construction method Download PDFInfo
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- CN113914145A CN113914145A CN202111202276.4A CN202111202276A CN113914145A CN 113914145 A CN113914145 A CN 113914145A CN 202111202276 A CN202111202276 A CN 202111202276A CN 113914145 A CN113914145 A CN 113914145A
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- layer
- pipeline
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- encapsulating
- municipal
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Abstract
The invention discloses a tramcar embedded roadbed light structure for protecting municipal pipelines, which is characterized in that: comprises an encapsulating layer, a backfill layer, a foundation bed surface layer and a track supporting layer from bottom to top; the encapsulating layer is provided with a groove structure protruding upwards and used for sealing the pipeline, and a groove filling layer is arranged around the pipeline in the groove structure; and laying impermeable geomembranes at the bottom, the side periphery and the top of the backfill layer. The municipal pipeline is safely protected in a concrete encapsulation mode, foam light soil is used for backfilling in an excavated foundation pit, and the soil pressure borne by the pipeline is remarkably reduced to compensate additional stress applied by upper electric cars and track loads, so that the influence of the soil pressure on the pipeline is reduced; thereby not only effectively protected the pipeline, avoided the change of management money, can reduce the tram load again and to the influence of pipeline, guaranteed tram's road bed settlement control standard.
Description
Technical Field
The invention belongs to the field of tramcars and highway traffic roadbed design, and particularly relates to an embedded type roadbed light structure of a tramcar for protecting municipal pipelines and a construction method.
Background
The tramcar line is mainly based on the ground line, mainly lays along the town road, in the process of establishing, inevitably takes place various influences and restrictions with the ambient environment, especially tramcar ground segment whole track bed buries formula roadbed structure and easily receives municipal administration pipeline cross influence to there is very big influence to the tramcar design scheme. There are currently two main treatment options:
1. the scheme has the difficulties of complex pipeline migration and modification procedures, large pipeline migration and modification quantity, high migration and modification cost and the like;
2. when bridge and culvert or pile plate structures are adopted for crossing protection, disturbance influence of bridge and culvert foundation and pile foundation construction on soil layers around pipelines exists, and the construction time is long and the cost is high; when the tramcar and the pipeline are in small-angle oblique crossing, the structural crossing design difficulty is large.
Therefore, when the treatment measures are not proper, the construction cost is high, and even potential safety hazards can be brought to the operation of pipelines and trams.
Disclosure of Invention
Aiming at least one of the defects or improvement requirements in the prior art, the invention provides the tramcar embedded roadbed light structure for protecting the municipal pipeline, which adopts concrete encapsulation protection and foam light soil backfilling, is convenient and quick to construct, short in construction period, green and environment-friendly, ensures the quality, saves the engineering construction cost, can meet the settlement control requirement of the tramcar, and can ensure the safety of the pipeline.
To achieve the above objects, according to one aspect of the present invention, there is provided an embedded railroad bed light structure for tramcars for municipal pipeline protection, wherein: comprises an encapsulating layer, a backfill layer, a foundation bed surface layer and a track supporting layer from bottom to top;
the encapsulating layer is provided with a groove structure protruding upwards and used for sealing the pipeline, and a groove filling layer is arranged around the pipeline in the groove structure;
and laying impermeable geomembranes at the bottom, the side periphery and the top of the backfill layer.
Further preferably, the envelope layer is a plain concrete envelope layer.
Further preferably, the cross section of the encapsulating layer is zigzag.
Further preferably, the encapsulating layer comprises a bottom plain concrete cushion layer, a side plain concrete encapsulating protective layer and a top plain concrete encapsulating protective layer which are connected in sequence;
the channel structure is formed by a side plain concrete underlayment and a top plain concrete underlayment.
Further preferably, the tank filling layer is a sand filling layer.
Preferably, an anti-seepage geomembrane is laid between the encapsulating layer and the filling layer, an anti-seepage geomembrane is laid between the filling layer and the surface layer of the foundation bed, and an anti-seepage geomembrane is laid on the periphery of the excavation side slope of the filling layer.
Further preferably, the filling layer is foamed lightweight soil.
In order to achieve the above object, according to another aspect of the present invention, there is provided a method for constructing an embedded roadbed light structure of a tramcar for protecting municipal pipelines, comprising the steps of:
s1, accurately detecting and positioning the pipeline position, performing slope-releasing excavation according to the pipeline position and the buried depth by combining geological conditions, excavating to a preset distance from the bottom of the pipeline, reserving part of undisturbed soil at the bottom of the pipeline, and checking and confirming the integrity of the pipeline;
s2, forming a groove structure for sealing the pipeline around the pipeline to form an encapsulating layer, and backfilling a filling layer around the pipeline before capping the groove structure;
s3, determining the thickness, the wet density and the construction mix proportion of the backfill layer before the backfill layer is applied on the encapsulating layer;
s4, after the pipeline is sealed and protected, a layer of impermeable geomembrane is paved on the bottom and the side slopes on the two sides;
s5, applying a backfill layer;
s6, laying an impermeable geomembrane on the top of the backfill layer for sealing;
and S7, filling the surface layer of the foundation bed on the backfilling layer with strength meeting the requirement, and then pouring the track supporting layer.
Further preferably, step S2 includes: and pouring a bottom cushion layer at the bottoms of two sides of the left undisturbed soil, pouring lateral encapsulation protective layers at two sides of the pipeline, backfilling a groove filling layer around the pipeline, and then sealing the top of the pipeline by using the top encapsulation protective layer.
Further preferably, in step S5, the backfill layer is poured in layers, and maintenance measures are made in time.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the tramcar embedded roadbed light structure for protecting the municipal pipeline and the construction method thereof adopt a concrete encapsulation form to carry out safety protection on the municipal pipeline, foam light soil is adopted for backfilling in an excavation foundation pit, the soil pressure borne by the pipeline is obviously reduced to compensate the additional stress applied by the upper tramcar and the track load, and thus the influence of the soil pressure on the pipeline is reduced; thereby not only effectively protected the pipeline, avoided the change of management money, can reduce the tram load again and to the influence of pipeline, guaranteed tram's road bed settlement control standard.
2. The tramcar embedded roadbed light structure for protecting municipal pipelines and the construction method effectively avoid a plurality of difficulties in pipeline moving and changing and save engineering construction cost.
3. The tramcar embedded roadbed light structure for protecting municipal pipelines and the construction method thereof adopt the foam light soil for backfilling, reduce the influence of tramcar load on the pipelines, have convenient construction, short construction period and guaranteed quality, save the engineering construction cost and ensure the safety of the tramcar and the pipelines.
4. Along with the development of this kind of novel track traffic of tram to ground is applied and is established to mainly bury formula road bed and must have complicated influence with the pipeline alternately, and this patent is not only effectual solved the pipeline and has moved complicated procedure and high cost that changes, and has guaranteed the safety of tram and pipeline, has practiced thrift the engineering construction cost, and application prospect is good.
5. The embedded type roadbed light structure for municipal pipeline protection can be popularized to rail transit and road traffic, engineering construction cost can be saved, construction is convenient, construction time can be saved, the environment can be protected, and good economic benefit and social benefit are achieved.
Drawings
FIG. 1 is a schematic longitudinal cross-sectional view of a tram buried roadbed lightweight structure for municipal pipeline protection according to an embodiment of the invention;
FIG. 2 is a detailed schematic cross-sectional view of a plain concrete envelope of a tram buried roadbed light structure for municipal pipeline protection according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a tram buried roadbed lightweight structure for municipal pipeline protection according to an embodiment of the invention;
fig. 4 is a flow chart of a construction method of the tramcar buried roadbed light structure for protecting the municipal pipeline according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1 to 3, the present invention provides a tram buried roadbed light structure for protecting municipal pipelines, wherein: comprises an encapsulating layer, a backfill layer, a foundation bed surface layer 6 and a track supporting layer 7 from bottom to top; the encapsulating layer is provided with a groove structure protruding upwards and used for sealing the pipeline 1, and a groove filling layer is arranged around the pipeline 1 in the groove structure; and laying the impermeable geomembranes 4 at the bottom, the side periphery and the top of the backfill layer.
Further preferably, the envelope layer is a plain concrete envelope layer 2, more particularly a C25 plain concrete envelope layer.
As shown in fig. 2, it is further preferable that the cross-section of the encapsulation layer is zigzag. Further preferably, the envelope layer comprises a horizontal bottom plain concrete cushion layer 21, a vertical side plain concrete envelope protection layer 22 and a horizontal top plain concrete envelope protection layer 23 which are connected in sequence; the trough structure is formed by side plain concrete underlayment 22 and a top plain concrete encapsulation protective layer 23, wherein the thickness of the side plain concrete encapsulation protective layer 22 is greater than the thickness of the bottom plain concrete underlayment 21. The bottom plain concrete cushion layer 21 is a 0.15m thick C25 plain concrete cushion layer, the side plain concrete encapsulation protective layer 22 is a 0.2m thick C25 plain concrete encapsulation protective layer, and the top plain concrete encapsulation protective layer 23 is a C25 plain concrete encapsulation protective layer.
As shown in fig. 1, it is further preferable that the tank filling layer is a sand filling layer 3.
As shown in fig. 1 and 3, it is further preferable that an impermeable geomembrane 4 is laid between the envelope layer and the filling layer, an impermeable geomembrane 4 is laid between the filling layer and the foundation bed surface layer 6, and an impermeable geomembrane 4 is laid around the excavation slope side of the filling layer.
Further preferably, the filling layer is foamed lightweight soil 5.
Further preferably, the bed surface 6 is a cement stabilized macadam bed surface.
Further preferably above the rail-supporting layer 7 is a tramway structure 8.
As shown in fig. 4, the invention also provides a construction method of the tramcar embedded roadbed light structure for protecting municipal pipelines, which comprises the following steps:
s1, accurately detecting and positioning the position of the pipeline 1, performing slope excavation according to the position of the pipeline and the buried depth by 1:0.5 by combining geological conditions, excavating within the width range of the roadbed and the allowable excavation depth, excavating to the preset distance of the bottom of the pipeline, reserving part of undisturbed soil 9 at the bottom of the pipeline, and checking and confirming the integrity of the pipeline.
And S2, constructing a groove structure for sealing the pipeline 1 around the pipeline 1 to form a C25 plain concrete encapsulating layer 2, and backfilling a filling sand layer 3 around the pipeline before capping the groove structure. Further preferably, step S2 includes: pouring a layer of bottom plain concrete cushion layer 21 with the thickness of 0.15m and C25 at the bottom of the two sides of the left undisturbed soil 9, pouring plain concrete encapsulation protective layers 22 with the thickness of 0.2m and C25 at the two sides of the pipeline, backfilling the periphery of the pipeline with a filling sand layer 3, and then sealing the top by using the top plain concrete encapsulation protective layers 23.
S3, before the backfill layer is applied on the encapsulating layer, determining the backfill thickness and the wet density of the foam lightweight soil 5 according to the stress compensation principle, wherein the backfill thickness is controlled to be 1-3 m, and the wet density range is 500-1000 kg/m3(ii) a And determining the construction mixing proportion of the foamed lightweight soil 5 according to the combination requirement.
And S4, after the pipeline is sealed and protected, paving a layer of impermeable geomembrane 4 on the bottom and the side slopes on the two sides.
S5, backfilling foamed light soil 5 on the encapsulating layer; further preferably, in step S5, the light foam soil is poured in layers, and maintenance measures are made in time to ensure the quality of the light foam soil.
S6, laying an impermeable geomembrane 4 on the top of the foamed light soil 5 for sealing, reducing the influence of underground water on the foamed light soil, and ensuring the durability of the foamed light soil.
And S7, when the strength of the foamed light soil 5 meets the requirement, filling the surface layer of the cement stabilized macadam foundation bed on the foamed light soil, and then pouring the track supporting layer 7.
In summary, compared with the prior art, the scheme of the invention has the following significant advantages:
the tramcar embedded roadbed light structure for protecting the municipal pipeline and the construction method thereof adopt a concrete encapsulation form to carry out safety protection on the municipal pipeline, foam light soil is adopted for backfilling in an excavation foundation pit, the soil pressure borne by the pipeline is obviously reduced to compensate the additional stress applied by the upper tramcar and the track load, and thus the influence of the soil pressure on the pipeline is reduced; thereby not only effectively protected the pipeline, avoided the change of management money, can reduce the tram load again and to the influence of pipeline, guaranteed tram's road bed settlement control standard.
The tramcar embedded roadbed light structure for protecting municipal pipelines and the construction method effectively avoid a plurality of difficulties in pipeline moving and changing and save engineering construction cost.
The tramcar embedded roadbed light structure for protecting municipal pipelines and the construction method thereof adopt the foam light soil for backfilling, reduce the influence of tramcar load on the pipelines, have convenient construction, short construction period and guaranteed quality, save the engineering construction cost and ensure the safety of the tramcar and the pipelines.
Along with the development of this kind of novel track traffic of tram to ground is applied and is established to mainly bury formula road bed and must have complicated influence with the pipeline alternately, and this patent is not only effectual solved the pipeline and has moved complicated procedure and high cost that changes, and has guaranteed the safety of tram and pipeline, has practiced thrift the engineering construction cost, and application prospect is good.
The embedded type roadbed light structure for municipal pipeline protection can be popularized to rail transit and road traffic, engineering construction cost can be saved, construction is convenient, construction time can be saved, the environment can be protected, and good economic benefit and social benefit are achieved.
It will be appreciated that the embodiments of the system described above are merely illustrative, in that elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over different network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a formula roadbed light structure is buryyed to tram to municipal pipeline protection which characterized in that: comprises an encapsulating layer, a backfill layer, a bed surface layer (6) and a track supporting layer (7) from bottom to top;
the encapsulating layer is provided with a groove structure protruding upwards and used for sealing the pipeline (1), and a groove filling layer is arranged around the pipeline (1) in the groove structure;
and laying an impermeable geomembrane (4) at the bottom, the side periphery and the top of the backfill layer.
2. A tram underride light construction for municipal pipeline protection according to claim 1, wherein:
the encapsulating layer is a plain concrete encapsulating layer (2).
3. A tram underride light construction for municipal pipeline protection according to claim 1, wherein:
the cross section of the encapsulating layer is shaped like a Chinese character 'ji'.
4. A tram underride light construction for municipal pipeline protection according to claim 3, wherein:
the encapsulating layer comprises a bottom plain concrete cushion layer (21), a side plain concrete encapsulating protective layer (22) and a top plain concrete encapsulating protective layer (23) which are sequentially connected;
the channel structure is formed by side plain concrete underlayments (22) and a top plain concrete enveloping protective layer (23).
5. A tram underride light construction for municipal pipeline protection according to claim 1, wherein:
the tank inner filling layer is a filling sand layer (3).
6. A tram underride light construction for municipal pipeline protection according to claim 1, wherein:
one layer of anti-seepage geomembrane (4) is laid between the envelope layer and the filling layer, one layer of anti-seepage geomembrane (4) is laid between the filling layer and the foundation bed surface layer (6), and one layer of anti-seepage geomembrane (4) is laid on the periphery of the excavation side slope of the filling layer.
7. A tram underride light construction for municipal pipeline protection according to claim 1, wherein:
the filling layer is foam light soil (5).
8. A construction method for an embedded type roadbed light structure of a tramcar for protecting municipal pipelines is characterized by comprising the following steps:
s1, detecting and positioning the position of the pipeline (1), carrying out slope excavation according to the position and buried depth of the pipeline by combining geological conditions, excavating to the bottom of the pipeline for a preset distance, and reserving part of undisturbed soil (9) at the bottom of the pipeline;
s2, constructing a groove structure for sealing the pipeline (1) around the pipeline (1) to form an encapsulating layer, and backfilling a groove filling layer around the pipeline before capping the groove structure;
s3, determining the thickness, the wet density and the construction mix proportion of the backfill layer before the backfill layer is applied on the encapsulating layer;
s4, after the pipeline is sealed and protected, a layer of impermeable geomembrane (4) is laid on the bottom and the side slopes on the two sides;
s5, applying a backfill layer;
s6, laying an impermeable geomembrane (4) at the top of the backfill layer for sealing;
and S7, filling the foundation bed surface layer (6) on the backfilled layer with the strength meeting the requirement, and then pouring the track supporting layer (7).
9. The method for constructing a tram buried roadbed light structure for municipal pipeline protection as claimed in claim 8, wherein the method comprises the following steps:
step S2 includes: and pouring a bottom cushion layer at the bottoms of two sides of the left undisturbed soil (9), pouring side encapsulation protective layers at two sides of the pipeline, backfilling a filling layer in the groove around the pipeline, and then sealing the top of the pipeline by using the top encapsulation protective layer.
10. The method for constructing a tram buried roadbed light structure for municipal pipeline protection as claimed in claim 8, wherein the method comprises the following steps:
in step S5, layered pouring is adopted for pouring the backfill layer, and maintenance measures are made in time.
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| CN202111202276.4A CN113914145A (en) | 2021-10-15 | 2021-10-15 | Tramcar embedded roadbed light structure for protecting municipal pipeline and construction method |
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| CN202111202276.4A CN113914145A (en) | 2021-10-15 | 2021-10-15 | Tramcar embedded roadbed light structure for protecting municipal pipeline and construction method |
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| CN112228631A (en) * | 2020-11-03 | 2021-01-15 | 呼和浩特中燃城市燃气发展有限公司 | Pipeline reinforcing system |
| CN212536916U (en) * | 2020-07-01 | 2021-02-12 | 中国电建集团贵阳勘测设计研究院有限公司 | Structure for water delivery pipe passing through highway |
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2021
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| JP2001311131A (en) * | 2000-04-28 | 2001-11-09 | Nippon Steel Corp | Protection method for embedded pipe |
| CN102505598A (en) * | 2011-10-09 | 2012-06-20 | 中铁六局集团有限公司 | Method for reinforcement construction of soft soil foundation by exchange-filling with foam lightweight soil |
| JP2017053489A (en) * | 2015-09-10 | 2017-03-16 | 東レ株式会社 | Protection structure and protection method of underground pipe |
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