CN211227885U - Rock foundation existing high-speed railway dyke force balance side width structure - Google Patents
Rock foundation existing high-speed railway dyke force balance side width structure Download PDFInfo
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- CN211227885U CN211227885U CN201922155717.4U CN201922155717U CN211227885U CN 211227885 U CN211227885 U CN 211227885U CN 201922155717 U CN201922155717 U CN 201922155717U CN 211227885 U CN211227885 U CN 211227885U
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Abstract
The utility model discloses a rock foundation existing high-speed railway embankment force balance side width structure, which comprises a plurality of grouting anchor rods, wherein the grouting anchor rods are arranged in the rock foundation outside the embankment toe at intervals; the reinforced concrete frame structure is arranged on a rock foundation outside the slope toe of the existing embankment, and all grouting anchor rods are connected to the bottom of the frame structure; one end of the reinforced concrete cantilever plate is connected to the top of the frame structure, the other end of the reinforced concrete cantilever plate is placed on the existing embankment shoulder structure, and the top surface of the frame structure, the top surface of the cantilever plate and the top surface of the existing embankment are flush; and filling the inner cavity of the frame structure with a filling body. By the aid of the wide structure, high bearing capacity and anchoring force of a rock foundation are fully utilized, the weight of a frame structure and an internal filling body of the frame structure is utilized, and pulling force generated by a grouting anchor rod is combined to resist load of a train acting on a cantilever plate, so that unfavorable vertical deformation of the train passing through the cantilever plate can be avoided, and an existing high-speed railway is not influenced.
Description
Technical Field
The utility model relates to a high-speed railway engineering field especially relates to an existing high-speed railway dyke force balance group width structure of rock foundation and construction method.
Background
The high-speed railways develop rapidly in China, large high-speed railway networks in China are basically built at present, but with the continuous increase of local requirements, the high-speed railway branch network construction is increased day by day, and in the high-speed railway branch network construction, a plurality of newly built high-speed railways need to be parallel to the existing high-speed railways, and even need to be built in the vicinity of the existing high-speed railways or need to be widened.
The high-speed railway has strict requirements on deformation, the ballastless track high-speed railway is subjected to millimeter-scale deformation control, loads are added near the existing high-speed railway, the existing high-speed railway is undoubtedly caused to generate adverse deformation, and when the existing high-speed railway is a embankment project, the adverse deformation influence newly increased in the later period is particularly obvious and becomes a key control point for implementation of a newly-built high-speed railway.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the problems in the prior art, the rock foundation existing high-speed railway embankment force balance side width structure and the construction method are provided, and the technical problem that the side width deformation of the rock foundation existing high-speed railway embankment is difficult to control can be effectively solved.
In order to realize the purpose, the utility model discloses a technical scheme be:
a rock foundation existing high-speed railway dyke force balance side width structure comprises:
the grouting anchor rods are arranged in the rock foundation on the outer side of the slope toe of the existing embankment at intervals;
the reinforced concrete frame structure is arranged on a rock foundation outside the slope toe of the existing embankment, and all the grouting anchor rods are connected to the bottom of the frame structure;
one end of the reinforced concrete cantilever plate is connected to the top of the frame structure, the other end of the reinforced concrete cantilever plate is placed on the existing embankment shoulder structure, and the top surface of the frame structure, the top surface of the cantilever plate and the top surface of the existing embankment are flush;
and the filling body is used for filling the cavity in the frame structure.
The setting width of the frame structure is determined according to the width requirement, the cantilever plate meets the vertical deformation requirement under the action of the dynamic stress of the train, and the grouting anchor rod can provide great favorable tension for the frame structure; the frame structure is used as a bearing body of a newly-built broad roadbed, is used as a fixed stress end of the cantilever plate and provides a constraint space for the filling body; the economic and local material utilization of the weight of the filling body provides favorable pressure for widening the road base; the cantilever plate is used as a part of a bearing structure of the broad road foundation, and the cantilever structure is not contacted with the existing high-speed rail filling body and does not generate unfavorable deformation to the existing high-speed rail.
By adopting the rock foundation existing high-speed railway embankment force balance side width structure, the high bearing capacity and anchoring force of the rock foundation are fully utilized, the weight of the filling body passes through the frame structure and the interior of the frame structure, and the pulling force generated by the grouting anchor rod is combined to resist the load acted on the cantilever plate by a train and have high safety storage, so that the unfavorable vertical deformation of the train passing through the cantilever plate can be avoided, and the side width roadbed does not generate unfavorable load on the existing high-speed railway, thereby not influencing the existing high-speed railway; the structure completely avoids the influence on the existing high-speed railway filling body, so that the existing high-speed railway cannot be adversely affected.
Preferably, the top surface of the frame structure and the top surface of the cantilever plate form a wide structure top surface for arranging a track structure.
Preferably, a chamfer structure is arranged between the cantilever plate and the side wall of the frame structure.
The grouting anchor rod determines the setting distance and depth according to the force balance safety reserve requirement, and preferably, the depth of the grouting anchor rod inserted into the rock foundation is equal to or greater than 4 m.
Preferably, the filling is a layered filling structure.
Preferably, frame construction includes bottom plate, two perpendicular walls and roof, the bottom plate, two perpendicular wall with the roof encloses into the cubic pipe gallery structure, set up in the intraductal filler of cubic pipe gallery.
Preferably, the cantilever plate and the top plate are an integrally formed structural member.
The utility model also provides a construction method as above of the existing high railway dyke force balance group width structure of rock foundation, including following step:
A. leveling a rock foundation of a newly built high-speed railway;
B. constructing all the grouting anchor rods on a rock foundation, wherein the grouting anchor rods are embedded into the rock foundation, and the top parts of the grouting anchor rods are exposed out of the surface of the rock foundation;
C. constructing the bottom plate and the vertical wall on a rock foundation, wherein the exposed section of the grouting anchor rod is fixedly connected with the steel bars of the bottom plate, and the vertical stressed steel bars of the vertical wall are exposed out of the top of the vertical stressed steel bars;
D. after the bottom plate and the vertical wall are formed, filling the filling body in the cavity of the frame structure;
E. and integrally constructing the top plate and the cantilever plate, wherein exposed steel bars of the vertical wall are fixedly connected with steel bars of the top plate.
By adopting the construction method of the rock foundation existing high-speed railway embankment force balance side width structure, the high bearing capacity and the anchoring force of the rock foundation are fully utilized, the weight of the filling body in the frame structure and the frame structure is utilized, and the pulling force generated by the grouting anchor rod is combined to resist the load acted on the cantilever plate by a train and have high safety reserve, so that the unfavorable vertical deformation generated when the train passes through the cantilever plate can be avoided, and the side width roadbed does not generate unfavorable load to the existing high-speed railway, thereby not influencing the existing high-speed railway; the construction method has the characteristics of good deformation control effect, quick and convenient construction, safety, economy, reliability, environmental protection and the like, and is beneficial to popularization and application.
Preferably, in the step B, the exposed section of the grouting bolt is equal to or greater than 30 cm.
Preferably, in the step C, an exposed section of the vertical stressed steel bar of the vertical wall is equal to or larger than 30 cm.
Preferably, in the step D, after the strength of the bottom plate and the vertical wall concrete reaches 80% of the design strength, the filling body is filled in the cavity of the frame structure.
Preferably, in the step D, filling soil layers are constructed in layers to form the filling body.
Preferably, after the step E, a track structure on the top plate and the cantilever plate is constructed.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. by applying the utility model, the existing high-speed railway embankment force balance side width structure of the rock foundation fully utilizes the high bearing capacity and anchoring force of the rock foundation, the weight of the filling body passes through the frame structure and the interior of the frame structure, and the pulling force generated by the grouting anchor rod is combined to resist the load acted on the cantilever plate by a train, and the side width structure has very high safety storage, so that the unfavorable vertical deformation of the train passing through the cantilever plate can be avoided, and the side width roadbed does not generate unfavorable load to the existing high-speed railway, thereby not influencing the existing high-speed railway; the structure completely avoids the influence on the existing high-speed railway filling body, so that the adverse influence on the existing high-speed railway can not be generated;
2. by applying the construction method of the rock foundation existing high-speed railway embankment force balance side width structure, the high bearing capacity and the anchoring force of the rock foundation are fully utilized, the weight of the filling body passes through the frame structure and the interior of the frame structure, and the pulling force generated by the grouting anchor rod is combined to resist the load acted on the cantilever plate by a train and have high safety reserve, so that the unfavorable vertical deformation generated when the train passes through the cantilever plate can be avoided, and the side width roadbed does not generate unfavorable load to the existing high-speed railway, thereby not influencing the existing high-speed railway; the construction method has the characteristics of good deformation control effect, quick and convenient construction, safety, economy, reliability, environmental protection and the like, and is beneficial to popularization and application.
Drawings
Fig. 1 is the schematic diagram of the force balance side width structure of the existing high-speed railway of the rock foundation.
Icon: the method comprises the following steps of 1-grouting anchor rods, 2-frame structures, 21-bottom plates, 22-vertical walls, 23-top plates, 3-cantilever plates, 4-filling bodies, 5-track structures, 6-rock foundations and 7-existing embankments.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in figure 1, the present high railway dyke force balance group of rock foundation wide structure, include:
the grouting anchor rods 1 are arranged in a rock foundation 6 on the outer side of a toe of an existing embankment 7 at intervals, the grouting anchor rods 1 determine arrangement intervals and depth according to force balance safety reserve requirements, and specifically, the depth of the grouting anchor rods 1 inserted into the rock foundation 6 is equal to or greater than 4 m;
the reinforced concrete frame structure 2 is used for being arranged on a rock foundation 6 on the outer side of a toe of an existing embankment 7, all grouting anchor rods 1 are connected to the bottom of the frame structure 2, the frame structure 2 comprises a bottom plate 21, two vertical walls 22 and a top plate 23, and the bottom plate 21, the two vertical walls 22 and the top plate 23 enclose a cubic pipe gallery structure;
one end of the reinforced concrete cantilever plate 3 is connected to the top of the frame structure 2, the other end of the reinforced concrete cantilever plate is placed on the shoulder structure of the existing embankment 7, the top surface of the frame structure 2, the top surface of the cantilever plate 3 and the top surface of the existing embankment 7 are flush, the cantilever plate 3 and the top plate 23 are integrally formed structural members, and a chamfer structure is arranged between the cantilever plate 3 and the adjacent vertical wall 22;
the filling body 4 adopts common soil materials to fill the cavity in the frame structure 2 layer by layer;
and the track structure 5 is used for arranging a wide structure top surface formed by the top surface of the frame structure 2 and the top surface of the cantilever plate 3.
The setting width of the frame structure 2 is determined according to the width requirement, the cantilever plate 3 meets the vertical deformation requirement under the action of the dynamic stress of the train, and the grouting anchor rod 1 can provide great favorable tension for the frame structure 2; the frame structure 2 is used as a bearing body of a newly-built broad roadbed, is used as a fixed stress end of the cantilever plate 3 and provides a constraint space for the filling body 4; the economic and local material utilization is utilized to provide favorable pressure for the wide roadbed by the weight of the filling body 4; the cantilever plate 3 is used as a part of a bearing structure of the broad road foundation, and the cantilever structure is not contacted with the existing high-speed rail filling body and does not generate unfavorable deformation to the existing high-speed rail.
By applying the utility model, the existing high-speed railway embankment force balance side width structure of the rock foundation fully utilizes the high bearing capacity and anchoring force of the rock foundation 6, and the weight of the filling body 4 passing through the frame structure 2 and the interior of the frame structure is combined with the pulling force generated by the grouting anchor rod 1 to resist the load acted on the cantilever plate 3 by a train and has very high safety reserve, so that the unfavorable vertical deformation generated when the train passes through the cantilever plate 3 can be avoided, and the side width road base does not generate unfavorable load to the existing high-speed railway base, thereby not influencing the existing high-speed railway; the structure completely avoids the influence on the existing high-speed railway filling body, so that the existing high-speed railway cannot be adversely affected.
Example 2
As shown in fig. 1, the utility model provides a construction method of existing high railway dyke force balance group width structure of rock foundation for the existing high railway dyke force balance group width structure of rock foundation of construction as in embodiment 1, this method includes following step:
A. leveling a rock foundation 6 foundation of the newly built high-speed railway;
B. constructing all the grouting anchor rods 1 on the basis of the rock foundation 6, wherein the grouting anchor rods 1 are embedded into the rock foundation 6, the top parts of the grouting anchor rods 1 are exposed out of the surface of the rock foundation 6, and the exposed sections of the grouting anchor rods 1 are equal to or larger than 30 cm;
C. constructing the bottom plate 21 and the vertical wall 22 on the basis of the rock foundation 6, wherein the exposed section of the grouting anchor rod 1 is fixedly connected with the steel bars of the bottom plate 21 by welding, the vertical stressed steel bars of the vertical wall 22 are exposed out of the top of the vertical stressed steel bars, and the exposed section of the vertical stressed steel bars of the vertical wall 22 is equal to or larger than 30 cm;
the method also comprises the working procedures of setting a template and pouring concrete;
D. after the concrete strength of the bottom plate 21 and the vertical wall 22 reaches 80% of the designed strength, filling soil layers are constructed in the cavity of the frame structure 2 in a layering mode and filled in the filling body 4;
E. integrally constructing the top plate 23 and the cantilever plate 3, and fixedly connecting exposed steel bars of the vertical wall 22 with steel bars of the top plate 23 by welding;
the method also comprises the working procedures of setting a template and pouring concrete, wherein the reinforcement cage of the top plate 23 and the reinforcement cage of the cantilever plate 3 are bound into a whole;
F. the track structure 5 on the top plate 23 and the cantilever plate 3 is constructed.
By applying the construction method of the rock foundation existing high-speed railway embankment force balance side width structure, the high bearing capacity and anchoring force of the rock foundation 6 are fully utilized, the weight of the frame structure 2 and the filling body 4 inside the frame structure is utilized, and the pulling force generated by the grouting anchor rod 1 is combined to resist the load acted on the cantilever plate 3 by a train and have high safety reserve, so that the unfavorable vertical deformation of the train passing through the cantilever plate 3 can be avoided, and the side width road base does not generate unfavorable load to the existing high-speed railway base, thereby not influencing the existing high-speed railway; the construction method has the characteristics of good deformation control effect, quick and convenient construction, safety, economy, reliability, environmental protection and the like, and is beneficial to popularization and application.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides an existing high railway dyke force balance group of rock foundation is wide structure which characterized in that includes:
the grouting anchor rods (1) are arranged in a rock foundation (6) on the outer side of the toe of the existing embankment (7) at intervals;
the reinforced concrete frame structure (2) is arranged on a rock foundation (6) on the outer side of a toe of an existing embankment (7), and all the grouting anchor rods (1) are connected to the bottom of the frame structure (2);
one end of the reinforced concrete cantilever plate (3) is connected to the top of the frame structure (2), the other end of the reinforced concrete cantilever plate is placed on a shoulder structure of an existing embankment (7), and the top surface of the frame structure (2), the top surface of the cantilever plate (3) and the top surface of the existing embankment (7) are flush;
and the filling body (4) is used for filling the cavity inside the frame structure (2).
2. The force-balancing roof width structure according to claim 1, characterized in that the roof width structure formed by the top side of the frame structure (2) and the top side of the cantilever plate (3) is used for arranging a track structure (5).
3. The force-balancing roof width structure according to claim 1, characterized in that a chamfer structure is provided between the cantilever plate (3) and the side wall of the frame structure (2).
4. The force-balancing highwall structure according to claim 1, characterized in that the grouting bolt (1) is inserted into the rock foundation (6) to a depth equal to or greater than 4 m.
5. The force-balancing highwall structure according to claim 1, characterized in that the filling body (4) is a layered filling structure.
6. Force balancing roof width structure according to any one of claims 1-5, characterized in, that the frame structure (2) comprises a bottom plate (21), two vertical walls (22) and a top plate (23), the bottom plate (21), the two vertical walls (22) and the top plate (23) enclosing a cubic tube lane structure, the filling body (4) being arranged inside the tubes of the cubic tube lane.
7. The force balancing highwall structure according to claim 6, characterized in that the cantilevered panel (3) and the top panel (23) are an integral structural member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922155717.4U CN211227885U (en) | 2019-12-04 | 2019-12-04 | Rock foundation existing high-speed railway dyke force balance side width structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922155717.4U CN211227885U (en) | 2019-12-04 | 2019-12-04 | Rock foundation existing high-speed railway dyke force balance side width structure |
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| Publication Number | Publication Date |
|---|---|
| CN211227885U true CN211227885U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922155717.4U Active CN211227885U (en) | 2019-12-04 | 2019-12-04 | Rock foundation existing high-speed railway dyke force balance side width structure |
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| Country | Link |
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| CN (1) | CN211227885U (en) |
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