CN211446646U - Rigid-flexible combined double-layer protection shed tunnel - Google Patents
Rigid-flexible combined double-layer protection shed tunnel Download PDFInfo
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- CN211446646U CN211446646U CN201921839454.2U CN201921839454U CN211446646U CN 211446646 U CN211446646 U CN 211446646U CN 201921839454 U CN201921839454 U CN 201921839454U CN 211446646 U CN211446646 U CN 211446646U
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Abstract
The utility model discloses a hard and soft combination double-deck protection shed hole, including the main part bow member, the outside of main part bow member is equipped with flexible protective structure, the inboard of main part bow member is equipped with rigid protective structure, flexible protective structure includes flexible protection network and follows the vertical interval distribution's of main part bow member many supporting cables, two tip of supporting cable are fixed respectively in the both sides ground of main part bow member, the middle part of supporting cable is fixed on the vertical braces who is equipped with on the main part bow member, forms the arch, flexible protection network fixes on supporting cable, rigid protective structure includes the rigidity guard plate, the inboard at the main part bow member is fixed to the rigidity guard plate. This shed tunnel outside adopts flexible protective structure to be used for absorbing the rockfall energy, dredging the rockfall, and inboard adoption rigidity protective structure interception probably falls to the less rubble on the circuit, prevents that the rubble from invading the circuit, can adapt to the higher high-speed railway of operation safety requirement.
Description
Technical Field
The utility model relates to a technical field is built to the railway, especially relates to railway rockfall protective structure, in particular to double-deck protection shed tunnel of hard and soft combination.
Background
The geological condition that dangerous rockfall exists at a tunnel portal in traffic tunnel construction often produces serious influence on normal operation of a line, and particularly, various construction activities at the present stage are expanded to the middle and the west, and the conditions that rock mass at the tunnel portal is steep and severe in weathering phenomenon are more and more common. The large and small stones falling from the mountain body can affect the personal safety and the driving safety of personnel on the line, particularly the stones on the high-speed railway with high running speed can cause serious accidents such as train derailment.
Aiming at the problem of dangerous rock falling at the tunnel portal, the tunnel portal is mainly treated in a mode of arranging a shed tunnel at the portal, and the structural form of the shed tunnel mainly comprises a rigid shed tunnel with a reinforced concrete structure and a flexible shed tunnel consisting of a steel frame, a steel wire rope and the like.
The rigid shed tunnel is mainly of a reinforced concrete structure and is mainly arranged at a position where falling rocks possibly exist in a line, and vehicles and equipment in the line are protected from being influenced by the falling rocks by using the larger rigidity of the structure. However, the rigid concrete shed tunnel generally needs a larger structural thickness to directly resist the impact force of falling rocks, has large overall engineering quantity and high manufacturing cost, has weaker energy absorption and elastic deformation, can directly cause cracking or damage of the concrete structure due to the larger falling rocks, and is more complicated in overall maintenance and repair.
Due to the problems of the rigid shed tunnel, the shed tunnel in the current stage adopts the idea of leading the falling rock energy absorbed by the flexible structure to guide the falling rock to fall outside the line. When the flexible member encounters falling rock impact, the energy can be absorbed through elastic deformation to guide the falling rock to bounce, and meanwhile, the replacement and maintenance are convenient and fast after the local member is damaged. However, in the existing stage, the flexible shed tunnel mostly uses the blocking net as a protection measure, and for a high-speed railway with higher operation safety requirement, the safety condition can be influenced by smaller falling rocks, and the flexible shed tunnel has no adaptability.
Disclosure of Invention
There is the absorbable energy lower, maintain to restore comparatively loaded down with trivial details problem to current rigidity shed hole, and flexible shed hole exists the problem to the unable effective interception of less rubble, the utility model aims at providing a rigidity and flexibility combination double-deck protection shed hole, this shed hole outside adopt flexible protective structure to be used for absorbing the rockfall energy, dredge the rockfall, the inboard rigidity protective structure interception of adopting is probably fallen to the less rubble on the circuit, prevents the rubble invasion circuit, can adapt to the higher high-speed railway of operation safety requirement.
The utility model discloses a realize like this: the utility model discloses a hard and soft combination double-deck protection shed hole, including the main part bow member, the outside of main part bow member is equipped with flexible protective structure, the inboard of main part bow member is equipped with rigid protective structure, flexible protective structure includes flexible protection network and follows the vertical interval distribution's of main part bow member many supporting cables, two tip of supporting cable are fixed respectively in the both sides ground of main part bow member or the both sides of main part bow member, the middle part of supporting cable is fixed on the vertical support that is equipped with on the main part bow member, forms the arch, flexible protection network is fixed on supporting cable, rigid protective structure includes the rigidity guard plate, the inboard at the main part bow member is fixed to the rigidity guard plate.
Further, two ends of the supporting cable are respectively provided with a spring buffer; two ends of the supporting cable are respectively fixed on the ground at two sides of the main arch frame through spring buffers.
Further, the rigid protection plate is fixed on the main arch frame through a vertical support; the rigid protection plate is fixed with the end of the vertical support extending to the inner side of the main arch frame.
Further, the rigid protection plate is arched; the inner side of the main arch frame is respectively provided with a plurality of arched rigid protection plates along the longitudinal direction.
Furthermore, the main arch frame adopts a steel arch frame as a framework of the shed tunnel, the main arch frame is longitudinally arranged along a line, and two sides of the main arch frame are fixedly arranged on a stable foundation.
Further, the vertical supports are fixed on the main arch frame, one ends of the vertical supports extend towards the inner side of the main arch frame, and the other ends of the vertical supports extend towards the outer side of the main arch frame. The vertical supports are welded and fixed on the main arch frame.
Furthermore, the middle part of the supporting cable is fixed on a plurality of vertical supports arranged on the main arch frame to form an arch; the plurality of vertical supports are distributed on the arch curve of the main arch at intervals and are perpendicular to the arch curve.
Furthermore, a plurality of vertical supports fixed with the same supporting cable are set as a group of vertical supports, a plurality of groups of vertical supports are longitudinally arranged on the main arch frame, and each group of vertical supports are connected through a longitudinal connecting rod.
Furthermore, two corresponding vertical supports between each group of vertical supports are connected through two longitudinal connecting rods which are arranged in a crossed mode.
Further, the flexible protective net is fixed between two adjacent supporting cables which are arranged along the longitudinal direction of the main arch at intervals.
The utility model has the advantages that: the utility model takes the main arch as the main structure, the outer side is provided with the flexible protection structure, and the inner side is provided with the rigid protection structure; the flexible protection structure consists of a vertical support, a support cable, a protective net and a spring buffer. The vertical support is fixed on the main body structure, the end parts of the support cables are fixed to the ground or two sides of the main body arch centering by adopting spring buffers, the middle parts of the support cables are fixed on the vertical support, and the external protective net is arranged on the support cables; the rigidity protective structure comprises vertical braces and rigidity guard plate, and the guard plate passes through vertical braces to be fixed to the main part bow member.
The double-deck protection shed tunnel structure of hard and soft combination of the above-mentioned structure of this patent compares current rigidity shed tunnel structure, has and to falling stone energy-absorbing buffer function, connects through each parts is nimble, and it is comparatively convenient to maintain, protection below circuit operation safety that can be better.
The double-deck protection shed hole structure of the just gentle combination of the above-mentioned structure of this patent compares current flexible shed hole structure, and rigid protective structure is arranged to the inboard, can prevent the rubble that drops in the outside flexible protection network, prevents to drop into the operation line.
The double-deck protection shed tunnel structure of hard and soft combination of above-mentioned structure of this patent can be used to each type traffic route top, especially has better adaptability to the higher circuit of operation safety requirements such as high-speed railway.
Drawings
FIG. 1 is a cross-sectional view of a rigid-flexible combined double-layer protection shed tunnel;
FIG. 2 is a longitudinal section of the rigid-flexible combined double-layer protection shed tunnel.
In the attached drawing, 1 is a main arch frame, 2 is a vertical support, 3 is a support cable, 4 is a flexible protective net, 5 is a spring buffer, 6 is a longitudinal connecting rod, and 7 is a rigid protective plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 2, the embodiment discloses a rigid-flexible combined double-layer protection shed tunnel, which comprises a main body arch frame 1, the outer side of the main body arch frame 1 is provided with a flexible protection structure, the inner side of the main body arch frame 1 is provided with a rigid protection structure, the flexible protection structure comprises a flexible protection net 4 and a plurality of support cables 3 distributed along the longitudinal interval of the main body arch frame 1, two ends of each support cable 3 are respectively fixed on the two side surfaces of the main body arch frame 1 or the two side walls of the main body arch frame, the middle parts of the support cables 3 are fixed on vertical supports 2 arranged on the main body arch frame 1 to form an arch, the flexible protection net 4 is fixed on the support cables 3, the rigid protection structure comprises rigid protection plates 7, and the rigid protection plates 7 are fixed on the inner side of the main body arch frame 1.
After the vertical supports 2 are arranged along the main arch 1, the supporting cables 3 are arranged along the outer sides of the vertical supports 2.
Further, both ends of the support cable 3 are respectively provided with a spring damper 5; the two ends of the support cable 3 are fixed on the ground on the two sides of the main arch 1 through spring buffers 5.
Further, the rigid protection plate 7 is fixed at the end part of the vertical support 2 which is mainly arranged on the inner side of the main arch frame 1 through the vertical support 2, the rigid protection plate 7 can be made of steel, the thickness of the protection plate is determined according to the size of broken stones which penetrate through the flexible protection net 4, the range of the rigid protection plate 7 is determined according to the possible rockfall range, and at least the arch part is covered. The rigid protection plate 7 is fixed with the end of the vertical support 2 extending to the inside of the main arch 1.
Further, the rigid protection plate 7 is arched; the inner side of the main arch frame 1 is respectively provided with a plurality of arched rigid protection plates 7 along the longitudinal direction.
Further, the main body arch centering 1 adopts a steel arch centering as a framework of the shed tunnel, the main body arch centering 1 is longitudinally arranged along a line, and two sides of the main body arch centering 1 are arranged on a stable foundation for fixation.
The utility model discloses according to the required space of circuit of required protection, confirm 1 main structure size of main part bow member, main part bow member 1 can adopt the I-steel, is fixed in the circuit both sides with its bottom, and bow member structure model is according to the expected rockfall size and the speed analysis of dropping confirms.
Further, the vertical supports 2 are fixed on the main arch 1, one end of each vertical support 2 extends towards the inner side of the main arch 1, and the other end of each vertical support 2 extends towards the outer side of the main arch 1. In the embodiment, the vertical supports 2 are welded and fixed on the main arch frame 1. In main part bow member 1 side welded fastening vertical braces 2, vertical braces 2 can adopt steel, and 2 lengths of vertical braces are confirmed according to the deformation degree of upper portion protection network, avoid falling rocks part to pound and hinder main part bow member 1, and 2 diameters of vertical braces are confirmed according to flexible protection rigidity requirement, should provide the protection network deflection of certain degree.
Furthermore, the middle part of the supporting cable 3 is fixed on a plurality of vertical supports 2 arranged on the main arch frame 1 to form an arch; the plurality of vertical supports 2 are distributed on the arch curve of the main arch frame 1 at intervals and are vertical to the arch curve.
Furthermore, a plurality of vertical supports 2 fixed with the same supporting cable 3 are set as a group of vertical supports 2, a plurality of groups of vertical supports 2 are longitudinally arranged on the main arch frame 1, and each group of vertical supports 2 are connected through a longitudinal connecting rod 6.
Further, two corresponding vertical supports 2 between each group of vertical supports 2 are connected through two longitudinal connecting rods 6 arranged in a crossed manner. Longitudinal connecting rods 6 are longitudinally arranged on two sides of the vertical support 2 in the embodiment and are arranged in a crossed mode, so that the longitudinal integrity is enhanced.
Further, the flexible protection net 4 is fixed between two adjacent support cables 3 which are longitudinally arranged along the main arch 1 at intervals.
The method is characterized in that dangerous rock falling sections exist at the tunnel portal, a steel arch is used as a framework of the shed tunnel, the structural size is determined according to the requirement of internal space, the steel arch is longitudinally arranged along a line, and two sides of the steel arch are arranged on a stable foundation for fixation. An arch foundation structure is arranged according to the stratum conditions, and other related structures are fixed on the arch structure. The arch centering top sets up flexible protective structure, and flexible protective structure adopts flexible metal mesh as the interception net, and the interception net is fixed in steel arch centering outside support cable 3, and the cable middle part is fixed in vertical braces 2 department, and the shed hole both sides ground is gone into in the both sides anchor, sets up spring buffer 5 simultaneously at the tip, and vertical braces 2 is fixed in on the main part steel arch centering skeleton. Vertical support 2 adopts the connecting reinforcement to carry out vertical fixation along vertical, strengthens the vertical wholeness of structure. The arch portion position of bow member below sets up the rigidity protection for other rubbles that the protection passed outside flexible net, the rigidity protection is connected to the bow member through vertical braces 2, and the rubble that falls into rolls out from both sides.
This double-deck protection shed tunnel main part bow member 1 adopts the great structure of rigidity, prevents that the falling rocks from destroying shed tunnel major structure invasion circuit boundary. The flexible protective layer is established in the shed tunnel outside, and after the rockfall fell into the protection network, the protection network drives outside vertical braces 2 and takes place to warp, drives cable both sides spring buffer 5 simultaneously and warp for absorb the striking energy, at the protection network deformation in-process, dredge the rockfall to the shed tunnel both sides simultaneously. The internal rigid protection structure can better prevent external broken stones from falling into the line, and the safe operation of the line can be ensured.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has 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 or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a two-layer protection shed tunnel of hard and soft combination which characterized in that: including the main part bow member, the outside of main part bow member is equipped with flexible protective structure, the inboard of main part bow member is equipped with rigidity protective structure, flexible protective structure includes flexible protection network and follows the many support cables of the vertical interval distribution of main part bow member, two tip of support cable are fixed respectively in the both sides ground of main part bow member or the both sides of main part bow member, support cable's middle part and fix on the vertical braces that is equipped with on the main part bow member, form the arch, flexible protection network is fixed on supporting cable, rigidity protective structure includes the rigidity guard plate, the inboard at the main part bow member is fixed to the rigidity guard plate.
2. The rigid-flexible combined double-layer protection shed tunnel according to claim 1, characterized in that: spring buffers are respectively arranged at the two ends of the supporting cable; two ends of the supporting cable are respectively fixed on the ground at two sides of the main arch frame through spring buffers.
3. The rigid-flexible combined double-layer protection shed tunnel according to claim 1, characterized in that: the rigid protection plate is fixed on the main arch frame through a vertical support; the rigid protection plate is fixed with the end of the vertical support extending to the inner side of the main arch frame.
4. The rigid-flexible combined double-layer protection shed tunnel according to claim 1 or 3, characterized in that: the rigid protection plate is arched; the inner side of the main arch frame is respectively provided with a plurality of arched rigid protection plates along the longitudinal direction.
5. The rigid-flexible combined double-layer protection shed tunnel according to claim 1, characterized in that: the main body arch centering adopts the steel arch centering, as the skeleton of hangar tunnel, the main body arch centering is along circuit longitudinal arrangement, the both sides of main body arch centering are arranged in and are stabilized on the ground fixed.
6. The rigid-flexible combined double-layer protection shed tunnel according to claim 1, characterized in that: the vertical supports are fixed on the main arch frame, one ends of the vertical supports extend towards the inner side of the main arch frame, and the other ends of the vertical supports extend towards the outer side of the main arch frame.
7. The rigid-flexible combined double-layer protection shed tunnel according to claim 1, characterized in that: the middle part of the supporting cable is fixed on a plurality of vertical supports arranged on the main arch frame to form an arch; the plurality of vertical supports are distributed on the arch curve of the main arch at intervals and are perpendicular to the arch curve.
8. The rigid-flexible combined double-layer protection shed tunnel according to claim 1, characterized in that: a plurality of vertical supports fixed with the same supporting cable are set as a group of vertical supports, a plurality of groups of vertical supports are longitudinally arranged on the main arch frame, and each group of vertical supports are connected through a longitudinal connecting rod.
9. The rigid-flexible combined double-layer protection shed tunnel according to claim 8, wherein: two corresponding vertical supports between each group of vertical supports are connected through two longitudinal connecting rods which are arranged in a crossed mode.
10. The rigid-flexible combined double-layer protection shed tunnel according to claim 1, characterized in that: the flexible protective net is fixed between two adjacent supporting cables which are arranged at intervals along the longitudinal direction of the main arch frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921839454.2U CN211446646U (en) | 2019-10-30 | 2019-10-30 | Rigid-flexible combined double-layer protection shed tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921839454.2U CN211446646U (en) | 2019-10-30 | 2019-10-30 | Rigid-flexible combined double-layer protection shed tunnel |
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| CN211446646U true CN211446646U (en) | 2020-09-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323683A (en) * | 2020-10-26 | 2021-02-05 | 西安中交土木科技有限公司 | Protective device |
| CN114753274A (en) * | 2022-04-18 | 2022-07-15 | 重庆交通大学 | Anti avalanche of severe cold tunnel engineering strikes's heat preservation open cut tunnel structure |
-
2019
- 2019-10-30 CN CN201921839454.2U patent/CN211446646U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323683A (en) * | 2020-10-26 | 2021-02-05 | 西安中交土木科技有限公司 | Protective device |
| CN114753274A (en) * | 2022-04-18 | 2022-07-15 | 重庆交通大学 | Anti avalanche of severe cold tunnel engineering strikes's heat preservation open cut tunnel structure |
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