CN111395215B - UHPC edge angle type assembled buffer layer for rockfall protection shed tunnel - Google Patents
UHPC edge angle type assembled buffer layer for rockfall protection shed tunnel Download PDFInfo
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- CN111395215B CN111395215B CN202010195701.0A CN202010195701A CN111395215B CN 111395215 B CN111395215 B CN 111395215B CN 202010195701 A CN202010195701 A CN 202010195701A CN 111395215 B CN111395215 B CN 111395215B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
- E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
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Abstract
The invention relates to a UHPC edge angle type assembled buffer layer for a rockfall protection shed tunnel, which covers the top of the shed tunnel and comprises a buffer base layer transverse baffle and a buffer base layer longitudinal baffle which are arranged perpendicular to the top of the shed tunnel, wherein a rectangular frame consisting of the buffer base layer transverse baffle and the buffer base layer longitudinal baffle is covered with a plurality of UHPC edge connecting plates; the UHPC edge connecting plate is provided with edge wedge holes for inserting UHPC edges, edge mounting rods are transversely inserted into and penetrate through the UHPC edges from the end part of the UHPC edge connecting plate, and transversely adjacent UHPC edge connecting plates are connected through the exposed edge mounting rods. The invention has the advantages of high buffering energy consumption, easy construction, low cost, repairability and the like, and can be popularized and applied in the construction of shed tunnel structures in dangerous rockfall areas.
Description
Technical Field
The invention belongs to the technical field of tunnel engineering construction, and particularly relates to a UHPC edge angle type assembled buffer layer for a rockfall protection shed tunnel.
Background
Newly-built railways in the severe mountainous areas of the midwestern province mostly pass through V-shaped gullies, hillsides are steep, and dangerous rock falling rocks are distributed mostly. According to the distribution rule of rockfall movement tracks, tunnel portals are the places with the highest rockfall risk, a shed tunnel structure is generally adopted to cover a sand layer for protection, and once the place fails, rockfall impact is caused, so that catastrophic consequences are caused.
Three problems of the active hangar tunnel and the buffer layer are needed to be improved. Firstly, the shed tunnel structure is generally located the hard mountain area, because of the difficult maintenance that targets in place of the topography condition, the sand layer often can appear hardening, run off the scheduling problem and cause the function to weaken even become invalid. Secondly, when the falling rocks perform impact motion in the sandy soil layer, the resistance range of the falling rocks is about the sandy soil layer with a projection area, and the sandy soil in the range can rapidly move to the periphery after being stressed, so that the movement time of the falling rocks in the sandy soil layer is extremely short; thirdly, the cohesive force of the sand is low, the stress area of the rockfall finally contacted with the shed tunnel top plate after impact deformation is only the projected area of the rockfall, the stress area cannot be diffused, and the stress concentration effect of the shed tunnel structure is obvious. In a word, the sand layer is low in efficiency in 3 aspects of use and maintenance, delay time and diffusion stress. The key technology of the shed tunnel buffer layer is to reduce maintenance difficulty, prolong impact time and diffuse stress range.
The novel buffer layer of a kind of falling rocks protection shed tunnel is developed, make its easy construction easy to maintain and long service life, can prolong the impact action time and can effectively diffuse the falling rocks action load through structural optimization simultaneously to realize the function of protecting shed tunnel structure safety, can show and improve the safe in service of shed tunnel structure in the dangerous rock falling rocks area.
Disclosure of Invention
The invention aims to provide a UHPC edge angle type assembled buffer layer for a rockfall protection shed tunnel, which can effectively diffuse the stress area of the shed tunnel, prolong the movement time of rockfall in the buffer layer and reduce the impact force influence of rockfall of the shed tunnel.
The technical scheme adopted by the invention is as follows:
a UHPC sword angle type assembled buffer layer for falling rocks protection shed tunnel, its characterized in that:
the UHPC blade angle type assembled buffer layer covers the top of the shed tunnel and comprises a buffer base layer transverse baffle and a buffer base layer longitudinal baffle which are perpendicular to the top of the shed tunnel, and a rectangular frame consisting of the buffer base layer transverse baffle and the buffer base layer longitudinal baffle is covered with a plurality of UHPC blade connecting plates;
the UHPC edge connecting plate is provided with edge wedge holes for inserting UHPC edges, edge mounting rods are transversely inserted into and penetrate through the UHPC edges from the end part of the UHPC edge connecting plate, and transversely adjacent UHPC edge connecting plates are connected through the exposed edge mounting rods.
The transverse baffle plates of the buffer base layer are vertically and symmetrically arranged two times perpendicular to the top of the shed tunnel, are of a concrete structure and are integrally cast with the top of the shed tunnel.
The longitudinal baffle of the buffer base layer is perpendicular to the top of the shed tunnel and transversely arranged between the two transverse baffles of the buffer base layer, and is of a steel plate structure, and the space between the transverse baffles of the buffer base layer is longitudinally separated.
The inner sides of the transverse baffle plates of the buffer base layer corresponding to the transverse two ends of the longitudinal clapboard of the buffer base layer are provided with slots, and the longitudinal clapboard of the buffer base layer is inserted into the corresponding slots and fixed.
The buffering basic unit has been laid to the shed tunnel top in buffering basic unit horizontal baffle and the longitudinal baffle of buffering basic unit, and the buffering basic unit is the coarse sand layer.
The transverse baffle of the buffer base layer, the longitudinal baffle of the buffer base layer and the UHPC blade connecting plate form a square cabin structure which covers the top of the shed tunnel, and the square cabin structure is arc-shaped and is adaptive to the shape of the top of the shed tunnel.
The UHPC blade foot is a UHPC prefabricated part and is of a strip-shaped vertical plate structure, the UHPC blade foot is divided into three parts from top to bottom, the longitudinal section of the top part is in a trapezoid shape with a large top and a small bottom, the middle part is in a rectangle shape, the bottom part is in an inverted triangle shape, and the top part is provided with a transverse through hole which is a blade foot mounting hole.
The UHPC cutting edge connecting plate is a UHPC prefabricated part and is of an arc panel structure, longitudinal strip-shaped cutting edge wedge holes are arranged on the two transverse sides of the UHPC cutting edge connecting plate, the shape of the longitudinal section of each cutting edge wedge hole is the same as that of the top of the UHPC cutting edge, the UHPC cutting edge is inserted into each cutting edge wedge hole from the upper part, the top clamp is limited in each cutting edge wedge hole, and the middle part and the bottom part of each UHPC cutting edge connecting plate extend out from the lower part of the UHPC cutting edge connecting plate.
A transverse through hole is arranged between the blade wedge hole and the end part of the UHPC blade connecting plate and is a connecting plate mounting hole, and a transverse connecting plate anchoring hole is arranged on the hole wall on the inner side of the blade wedge hole.
The blade foot mounting rod is a steel bar, transversely inserted from a connecting plate mounting hole at the end part of the UHPC blade foot connecting plate, inserted into and penetrated through the blade foot mounting hole of the UHPC blade foot, further inserted into a connecting plate anchoring hole of the UHPC blade foot connecting plate, and the UHPC blade foot connecting plate are fixed;
the connecting plates of the UHPC edge feet which are adjacent in the transverse direction are butted and provided with a longitudinal gap which is an overflow area, and the edge foot mounting rods with exposed end parts are butted and welded and fixed.
The invention has the following advantages:
(1) the impact range is diffused, the impact time is delayed, and the buffering effect is good.
The damage of the shed tunnel structure is mainly manifested by broken rock breaking through the shed tunnel slab, cracked concrete in the contact area, over-limit of concrete crack at the bottom of the contact area, exposure or yielding of steel bars at the bottom of the contact area and the like, and the essential reason is that the local stress of the contact area is overlarge. The invention converts the phenomenon of impacting the shed tunnel by falling rocks into a multi-ribbed plate formed by combining falling rocks impact blade feet and connecting plates, so that the contact area of the shed tunnel is increased to the area of the multi-ribbed plate from the projected area of the falling rocks, the local stress is effectively diffused, and the damage of the shed tunnel structure caused by stress concentration is avoided.
The impulse is generally constant, i.e. the impact force is inversely proportional to the impact time. After falling rocks hit the top of the invention, the multi-ribbed plates start to move downwards through the blade feet, when the falling rocks are pressed down by a huge external force, the buffer base material with certain fluidity overflows to an overflow area, the series of movements can greatly prolong the impact time of the falling rocks acting on sand and then acting on a shed tunnel top plate,
in conclusion, the buffer device achieves the purpose of high buffer efficiency by reducing local stress and prolonging action time.
(2) The construction is convenient, and the maintenance is free and easy.
The buffer layer is mainly divided into a buffer base layer, a blade foot and a connecting plate. The buffer base layer is coarse sand with a certain thickness, so that the material taking is easy, the construction is simple and the cost is saved; the sword foot is UHPC bar-shaped structure and trompil board structure with even the board, can pour the production in the factory prefabrication, and the UHPC structure construction of small-size component is very easy, puts at the buffering basic unit top after sword foot and even the board transportation are taken one's place, can accomplish through the perforation and the welding of reinforcing bar, and the construction is simple and convenient swift.
Conventional buffer layer is single sand layer, and the attenuation that easily runs off along with time passes, needs often to maintain and guarantees normal use function. The top of the invention is the ultra-high performance concrete slab, which has better durability, covers the top of the coarse sand of the buffer base layer to protect the coarse sand, avoids the loss of the buffer base layer and can be generally free from maintenance. If the impact damage is serious, the buffer base layer is refilled and the connecting blade foot connecting plate is paved, so that the rapid maintenance can be realized.
As the main parts of the buffer layer are all produced in advance in factories, the parts with the same size can be disassembled and assembled on site after being manufactured in factories during replacement. The main construction process during replacement is only steel plate welding, UHPC plate buckling and light high molecular polymer on-site foaming. The method is a mature process and is simple and easy to operate.
Drawings
Fig. 1 is a general diagram of rockfall protection.
FIG. 2 is a schematic view of a buffer layer before being paved.
FIG. 3 is a schematic view of a UHPC blade and tie plate prior to installation.
FIG. 4 is an assembly view of a UHPC blade foot web.
In the figure:
1-UHPC edge foot type assembled buffer layer, 2-shed tunnel, 3-buffer base layer transverse baffle, 4-buffer base layer longitudinal baffle, 5-UHPC edge foot connecting plate, 6-edge foot wedge hole, 7-UHPC edge foot, 8-edge foot mounting rod, 9-slot, 10-buffer base layer, 11-edge foot mounting hole, 12-connecting plate mounting hole, 13-connecting plate anchoring hole and 14-overflow area.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
A main protection structure of traffic facilities in a hard mountainous area in a dangerous rock rockfall disaster risk area is a shed tunnel 2, and a UHPC (ultra high performance polycarbonate) blade-foot type assembled buffer layer 1 is paved on the top of the shed tunnel 2, so that the rockfall impact range can be effectively diffused, the impact time can be prolonged, the impact energy of rockfall on a shed tunnel structure can be reduced, the protection function on the shed tunnel main body structure can be achieved, and the traffic operation safety can be guaranteed.
The invention relates to a UHPC edge angle type assembled buffer layer for a rockfall protection shed tunnel, wherein the UHPC edge angle type assembled buffer layer 1 covers the top of the shed tunnel 2 and comprises a buffer base layer transverse baffle 3 and a buffer base layer longitudinal baffle 4 which are arranged perpendicular to the top of the shed tunnel 2, and a rectangular frame consisting of the buffer base layer transverse baffle 3 and the buffer base layer longitudinal baffle 4 is covered with a plurality of UHPC edge foot connecting plates 5. The UHPC edge connecting plate 5 is provided with an edge wedge hole 6 and is inserted with an UHPC edge 7, an edge mounting rod 8 is transversely inserted from the end part of the UHPC edge connecting plate 5 and penetrates through the UHPC edge 7, and transversely adjacent UHPC edge connecting plates 5 are connected through the respectively exposed edge mounting rods 8.
The buffer base layer transverse baffle 3 is vertical to the top of the shed tunnel 2 and is longitudinally and symmetrically arranged twice, and is integrally cast with the top of the shed tunnel 2. The longitudinal baffle 4 of the buffer base layer is transversely arranged between the two transverse baffles 3 of the buffer base layer perpendicular to the top of the shed tunnel 2, and longitudinally separates the space between the transverse baffles 3 of the buffer base layer. The inner sides of the buffer base layer transverse baffle plates 3 corresponding to the transverse ends of the buffer base layer longitudinal partition plates 4 are provided with slots 9, and the buffer base layer longitudinal partition plates 4 are inserted into the corresponding slots 9 and fixed. Buffering basic unit 10 has been laid to 2 tops of hangar tunnel in buffering basic unit transverse baffle 3 and the longitudinal baffle 4 of buffering basic unit, and buffering basic unit 10 is the coarse sand layer, for having the coarse sand of certain thickness, fills in the region of the possible contact of falling rocks at hangar tunnel 2 top.
The transverse baffle 3 of the buffer base layer, the longitudinal baffle 4 of the buffer base layer and the UHPC cutting edge connecting plate 5 form a square cabin structure which covers the top of the shed tunnel 2, and the square cabin structure is arc-shaped and is adaptive to the shape of the top of the shed tunnel 2. The transverse baffle 3 of the buffering base layer is of a concrete structure, and the longitudinal baffle 4 of the buffering base layer is of a steel plate structure.
The UHPC edge 7 is a UHPC (ultra high performance concrete) prefabricated part and is of a strip-shaped vertical plate structure which is divided into three parts from top to bottom, the longitudinal section of the top part is of a trapezoid with a large top and a small bottom, the middle part is of a rectangle, the bottom part is of an inverted triangle, and a vertical edge structure with a knife edge-shaped bottom and a wedge-shaped top is formed. The top of the UHPC cutting edge 7 is provided with a transverse through hole which is a cutting edge mounting hole 11. The UHPC edge connecting plate 5 is a UHPC prefabricated part and is of an arc panel structure, longitudinal strip-shaped edge wedge holes 6 are arranged on two transverse sides of the UHPC edge connecting plate, the shape of the longitudinal section of each edge wedge hole 6 is the same as that of the top of the UHPC edge 7, the UHPC edge 7 is inserted into the edge wedge holes 6 from the upper part, the top part is clamped in the edge wedge holes 6, and the middle part and the bottom part extend out from the lower part of the UHPC edge connecting plate 5.
A transverse through hole is arranged between the cutting edge wedge hole 6 and the end part of the UHPC cutting edge connecting plate 5, and is a connecting plate mounting hole 12, and a transverse connecting plate anchoring hole 13 is arranged on the hole wall at the inner side of the cutting edge wedge hole 6. The blade foot mounting rod 8 is transversely inserted from a connecting plate mounting hole 12 at the end part of the UHPC blade foot connecting plate 5, then is inserted into and penetrates through a blade foot mounting hole 11 of the UHPC blade foot 7, and is further inserted into a connecting plate anchoring hole 13 of the UHPC blade foot connecting plate 5, so that the UHPC blade foot 7 and the UHPC blade foot connecting plate 5 are fixed. The blade foot mounting rod 8 is formed by zinc impregnation treatment of common steel bars and has stronger durability. The blade foot connecting plates 5 which are adjacent transversely are butted and provided with a longitudinal gap which is an overflow area 14, and the blade foot mounting rods 8 with exposed end parts are butted and welded and fixed.
The construction steps of the invention are as follows:
step 1: dangerous rock falling rock mountain slope form survey and special investigation, the falling rock risk is identified and evaluated, the engineering implementation of the active and passive protection design of the mountain slope is carried out, and the maximum impact energy required to be born by the UHPC blade foot type assembled buffer layer 1 on the upper part of the shed tunnel 2 is determined through simulation analysis.
Step 2: and (3) calculating the minimum thickness of the UHPC blade foot type assembled buffer layer protected small shed tunnel plate, the filling thickness of a buffer base layer 10 (coarse sand can be adopted for filling), the minimum thickness of a buffer base layer transverse baffle 3 and a buffer base layer longitudinal partition plate 4, the construction size of the UHPC blade foot 7 and the minimum plate thickness of the UHPC blade foot connecting plate 5 according to the maximum impact energy in the step 1. And (5) constructing and designing details of the buffer layer structure according to the calculation result to finish the design drawing.
And step 3: and (3) processing and manufacturing the main components of the UHPC edge foot type assembled buffer layer according to the design drawing in the step (2). And (3) processing a UHPC (ultra high performance concrete) cutting edge 7 and a UPHC cutting edge connecting plate 5 by a concrete member factory according to the design drawing of the step (2), wherein the cutting edge and the connecting plate are formed by pouring and high-temperature steam curing UHPC (ultra high performance concrete) materials. The cutting edge and the connecting plate relate to a cutting edge mounting hole 11, a connecting plate mounting hole 12, a connecting plate anchoring hole 13 and a cutting edge wedge hole 6, and the cutting edge and the connecting plate are accurate to loft and are positioned without errors in reservation.
And 4, step 4: and (3) purchasing reinforcing steel bars according to the design drawing in the step (2), cutting and processing the reinforcing steel bars into a blade mounting rod 8, and carrying out zinc impregnation and other durability measures on the blade mounting rod 8. The steel plate is cut to form the cushion base longitudinal separators 4.
And 5: and (4) transporting the finished products finished in the steps 3 to 4 to a shed tunnel construction site. The shed tunnel structure is poured by the vertical mold, and the transverse baffle 3 of the buffer base layer is poured together with the shed tunnel main body structure. The transverse baffle 3 of the buffering base layer is provided with grooves according to the space between the clapboards in the longitudinal direction, so that the longitudinal clapboards 4 of the buffering base layer can be conveniently inserted into the separating chamber. And maintaining the poured shed tunnel 2 to the designed strength.
Arrangement 6: and (5) filling coarse sand in the buffer base layer sub-compartment formed in the step (5) to a designed height.
And 7: and (3) inserting the UHPC cutting edge 7 into the UHPC cutting edge connecting plate 5 through the cutting edge wedge hole 6 in the shed tunnel construction site.
And 8: the blade foot mounting rod 8 is inserted into the tie plate mounting hole 12, through the blade foot mounting hole 11, and terminates at the tie plate anchoring hole 13 on the basis of step 7.
And step 9: and (4) laying the finished product in the step (8) on the finished product in the step (6), and carrying out on-site welding on the adjacent blade foot mounting rods (8) to ensure that the load is shared by a plurality of UHPC (ultra high performance polycarbonate) connecting plates together when falling rocks impact.
Step 10: and (5) repeating the step (7) to the step (9) until all the UHPC blade-edge buffer layers on the top of the shed tunnel are assembled, and carrying out delivery operation with the shed tunnel structure after the UHPC blade-edge buffer layers are qualified through acceptance check.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (9)
1. A UHPC sword angle type assembled buffer layer for falling rocks protection shed tunnel, its characterized in that:
the UHPC blade angle type assembled buffer layer (1) covers the top of the shed tunnel (2) and comprises a buffer base layer transverse baffle (3) and a buffer base layer longitudinal baffle (4) which are arranged perpendicular to the top of the shed tunnel (2), and a rectangular frame consisting of the buffer base layer transverse baffle (3) and the buffer base layer longitudinal baffle (4) is covered with a plurality of UHPC blade connecting plates (5);
a cutting edge wedge hole (6) is formed in the UHPC cutting edge connecting plate (5) and a UHPC cutting edge (7) is inserted into the cutting edge wedge hole, a cutting edge mounting rod (8) is transversely inserted into the UHPC cutting edge connecting plate (5) from the end part of the UHPC cutting edge connecting plate and penetrates through the UHPC cutting edge (7), and the transversely adjacent UHPC cutting edge connecting plates (5) are connected through the respectively exposed cutting edge mounting rods (8);
the UHPC blade leg (7) is a UHPC prefabricated part and is of a strip-shaped vertical plate structure, the UHPC blade leg is divided into three parts from top to bottom, the longitudinal section of the top part is in a trapezoid shape with a large top and a small bottom, the middle part is in a rectangle shape, the bottom part is in an inverted triangle shape, and the top part is provided with a transverse through hole which is a blade leg mounting hole (11).
2. The UHPC cornered fabricated buffer layer for rockfall protection sheds according to claim 1, wherein:
the two transverse baffle plates (3) of the buffer base layer are vertical to the top of the shed tunnel (2) and are symmetrically arranged in the longitudinal direction, are of a concrete structure and are integrally cast with the top of the shed tunnel (2).
3. The UHPC cornered fabricated buffer layer for rockfall protection sheds according to claim 2, wherein:
the longitudinal baffle (4) of the buffer base layer is perpendicular to the top of the shed tunnel (2) and transversely arranged between the two transverse baffles (3) of the buffer base layer, and is of a steel plate structure, so that the space between the transverse baffles (3) of the buffer base layer is longitudinally separated.
4. A UHPC cornered fabricated buffer layer for rockfall protection sheds according to claim 3, wherein:
the inner sides of the transverse baffle plates (3) of the buffer base layer corresponding to the transverse ends of the longitudinal baffle plates (4) of the buffer base layer are provided with slots (9), and the longitudinal baffle plates (4) of the buffer base layer are inserted into the corresponding slots (9) and fixed.
5. The UHPC cornered modular buffer layer for rockfall protection sheds according to claim 4, wherein:
the buffering base layer (10) is laid on the tops of the shed holes (2) in the transverse baffle (3) and the longitudinal baffle (4) of the buffering base layer, and the buffering base layer (10) is a coarse sand layer.
6. The UHPC cornered modular buffer layer for rockfall protection sheds according to claim 5, wherein:
a shelter structure consisting of the transverse baffle (3) of the buffer base layer, the longitudinal baffle (4) of the buffer base layer and the UHPC blade connecting plate (5) covers the top of the shed tunnel (2), and the shelter structure is arc-shaped and is adaptive to the shape of the top of the shed tunnel (2).
7. The UHPC cornered modular buffer layer for rockfall protection sheds according to claim 6, wherein:
the UHPC edge connecting plate (5) is an UHPC prefabricated part and is of an arc panel structure, longitudinal strip-shaped edge wedge holes (6) are formed in the two transverse sides of the UHPC edge connecting plate, the shape of the longitudinal section of each edge wedge hole (6) is the same as that of the top of the UHPC edge (7), the UHPC edge (7) is inserted into the edge wedge holes (6) from the upper part, the top part is clamped in the edge wedge holes (6), and the middle part and the bottom part extend out of the lower part of the UHPC edge connecting plate (5).
8. The UHPC cornered fabricated buffer layer for rockfall protection sheds according to claim 7, wherein:
a transverse through hole is arranged between the edge wedge hole (6) and the end part of the UHPC edge connecting plate (5) and is a connecting plate mounting hole (12), and a transverse connecting plate anchoring hole (13) is arranged on the hole wall on the inner side of the edge wedge hole (6).
9. The UHPC cornered fabricated buffer layer for rockfall protection sheds according to claim 8, wherein:
the blade foot mounting rod (8) is a steel bar, transversely inserted from a connecting plate mounting hole (12) at the end part of the UHPC blade foot connecting plate (5), inserted into and penetrated through a blade foot mounting hole (11) of the UHPC blade foot (7), further inserted into a connecting plate anchoring hole (13) of the UHPC blade foot connecting plate (5), and the UHPC blade foot (7) and the UHPC blade foot connecting plate (5) are fixed;
the connecting plates (5) of the UHPC edge feet which are adjacent in the transverse direction are butted and provided with a longitudinal gap which is an overflow area (14), and the edge foot mounting rods (8) with exposed end parts are butted and welded and fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010195701.0A CN111395215B (en) | 2020-03-19 | 2020-03-19 | UHPC edge angle type assembled buffer layer for rockfall protection shed tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010195701.0A CN111395215B (en) | 2020-03-19 | 2020-03-19 | UHPC edge angle type assembled buffer layer for rockfall protection shed tunnel |
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| CN111395215B true CN111395215B (en) | 2021-10-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256583A (en) * | 1998-03-09 | 1999-09-21 | Nippon Samikon Kk | Back earth pressure reducing structure |
| JP2001055713A (en) * | 1999-08-18 | 2001-02-27 | Okasan Livic Co Ltd | Reduced-weight structure for rock fall protective structure |
| CN206769951U (en) * | 2017-03-30 | 2017-12-19 | 长沙理工大学 | A kind of lane device for being used for safe escape in tunnel |
| CN108360560A (en) * | 2018-02-12 | 2018-08-03 | 四川省交通运输厅交通勘察设计研究院 | A kind of assembled steel case hangar tunnel and construction method suitable for rescue and relief work |
| CN208105091U (en) * | 2018-03-29 | 2018-11-16 | 四川省交通运输厅交通勘察设计研究院 | A kind of buffering energy-consumption shed tunnel top composite construction suitable for anti-rock-fall impact |
| CN209584879U (en) * | 2019-01-31 | 2019-11-05 | 四川省交通运输厅交通勘察设计研究院 | A kind of compound porous energy dissipating support hangar tunnel |
-
2020
- 2020-03-19 CN CN202010195701.0A patent/CN111395215B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256583A (en) * | 1998-03-09 | 1999-09-21 | Nippon Samikon Kk | Back earth pressure reducing structure |
| JP2001055713A (en) * | 1999-08-18 | 2001-02-27 | Okasan Livic Co Ltd | Reduced-weight structure for rock fall protective structure |
| CN206769951U (en) * | 2017-03-30 | 2017-12-19 | 长沙理工大学 | A kind of lane device for being used for safe escape in tunnel |
| CN108360560A (en) * | 2018-02-12 | 2018-08-03 | 四川省交通运输厅交通勘察设计研究院 | A kind of assembled steel case hangar tunnel and construction method suitable for rescue and relief work |
| CN208105091U (en) * | 2018-03-29 | 2018-11-16 | 四川省交通运输厅交通勘察设计研究院 | A kind of buffering energy-consumption shed tunnel top composite construction suitable for anti-rock-fall impact |
| CN209584879U (en) * | 2019-01-31 | 2019-11-05 | 四川省交通运输厅交通勘察设计研究院 | A kind of compound porous energy dissipating support hangar tunnel |
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| CN111395215A (en) | 2020-07-10 |
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