CN108517796A - Approximate closed steel case adds spring buffer layer - Google Patents
Approximate closed steel case adds spring buffer layer Download PDFInfo
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- CN108517796A CN108517796A CN201810522450.5A CN201810522450A CN108517796A CN 108517796 A CN108517796 A CN 108517796A CN 201810522450 A CN201810522450 A CN 201810522450A CN 108517796 A CN108517796 A CN 108517796A
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- spring
- steel
- steel case
- closed
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Classifications
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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
Abstract
The present invention relates to a kind of closed steel casees of approximation to add spring buffer layer, the buffer layer is set to above the structure sheaf of rock-fall proof structural top, steel case including not top surface, it is evenly arranged spring in steel case, spring top is provided with upper layer steel plate, the closed hexahedron that upper layer steel plate can be compressed with steel case composition top.The present invention utilizes the discharge of gas and the natural process of resorption in spring layer and basic closed case, form double layer damping, the harm of falling rocks impulsive load is effectively reduced, the deficiency of other buffer layers in actual application is solved, effective guarantee is provided safely for railway operation.
Description
Technical field
The invention belongs to bridge structure technical field of buildings, and in particular to a kind of closed steel case of approximation adds spring buffer layer.
Background technology
In the multiple area of rockfall, railway is typically provided rockfall safeguard structure.The impact force of falling rocks is very big, when falling
When stone collides with safeguard structure, what falling rocks was transmitted to safeguard structure is a kind of impulsive force of moment load pop-off,
This impulse action power is much larger than the weight of falling rocks itself.Generally rigid structure is difficult to do resists greatly this arteries and veins to sufficient intensity
Impulse force.
Normal practice is one layer of buffer layer of laying at the top of safeguard structure, and code requirement laying about 2m is thick to banket as slow
Rush the impulsive force that layer eliminates falling rocks.
The own wt that bankets of 2m thickness is big, this allow for that lower protective structure must do it is powerful enough be enough to resist banket
Weight.
If can be bound to the weight reduction of banketing of 2m, substructure that can save quantities with lightness, reduces engineering and make
Valence.
Invention content
The object of the present invention is to provide a kind of closed steel casees of approximation to add spring buffer layer, is laid on rock-fall proof structural top,
Falling rocks is reduced to destroy the impulsive force of safeguard structure.
The technical solution adopted in the present invention is：
Approximate closed steel case adds spring buffer layer, it is characterised in that：
The buffer layer is set to above the structure sheaf of rock-fall proof structural top, including the not steel case of top surface, in steel case uniformly
It is disposed with spring, spring top is provided with upper layer steel plate, the closed hexahedron that upper layer steel plate can be compressed with steel case composition top.
Upper layer steel plate bottom surface is welded with steel grating.
Two layers of spring is provided in steel case, the spring of lower layer is set on bottom plate i.e. lower layer's steel plate of steel case, the bullet on upper layer
Spring is set on the steel plate of middle level.
The spring of lower layer is strong spring, and the spring on upper layer is weak spring.
Upper layer steel plate surrounding and the gap of steel case surrounding are provided with the closed bed course of caoutchouc elasticity.
The bottom plate of steel case, that is, be provided with sand bedding course between lower layer's steel plate and the structure sheaf of rock-fall proof structural top.
The present invention has the following advantages：
（1）Light-duty Structural：
Traditional rock-fall proof method, structure sheaf top being banketed with 2m is thick as buffer layer, weight
Amount is too big, this structure only has steel plate and spring weight, and weight is far smaller than the weight of banketing of 2m thickness.This is just greatly reduced
The project scale of following safeguard structure.
（2）Double damping systems：
Utilize the discharge of gas and the natural process of resorption in spring layer and basic closed case, shape
At double layer damping, the harm of falling rocks impulsive load is effectively reduced.
（3）Service life is long：
Buffer layer, which removes, uses fill stratum, and the lightweight constructions such as rubber and foam, but rubber also can be used
And foam etc. is easy to aging, and it is easy spontaneous combustion, it is not rock-steady structure, is not used unit receiving.After this buffer layer, knot
Structure performance is stablized non-aging, extends service life, more will not spontaneous combustion, reduce the probability of secondary disaster.
（4）Low cost：
Having new material foamed aluminium etc. at present also can replace banketing as buffer layer, but the new materials such as foamed aluminium involve great expense,
Project cost is raised, it is difficult to promote.This structural cost is cheap, construction is simple, convenient to carry out.
Description of the drawings
Fig. 1 is steel case bottom section of the present invention.
Fig. 2 is the whole section of the present invention.
In figure, 1- steel casees, 2- sand bedding courses, 3- structure sheafs, 4- lower layers steel plate, the middle levels 5- steel plate, the upper layers 6- steel plate, 7- steel lattice
Grid, 8- springs.
Specific implementation mode
The present invention will be described in detail With reference to embodiment.
The present invention relates to a kind of closed steel casees of approximation, and spring buffer layer, design principle to be added to be to extend arteries and veins using spring-compressed
The action time of impulse force reduces impulsive force using the internal and external pressure difference of approximate closed steel case and endangers.
The buffer layer is set to above the structure sheaf of rock-fall proof structural top, including the not steel case 1 of top surface, high about
0.6m, 1 bottom surface of steel case and the same area of structure sheaf.Spring 8 has been evenly arranged in steel case 1,8 top of spring is provided with upper layer steel plate 6,
Steel plate 6 bottom surface in upper layer is welded with steel grating 7, the rigidity for enhancing top layer steel plate.Upper layer steel plate 6 can with the composition of steel case 1 top
With the closed hexahedron of compression.The bottom plate of steel case 1, that is, be provided with sand between lower layer's steel plate 4 and the structure sheaf of rock-fall proof structural top
Bed course 2, thick 10cm can make the power that top is transmitted be evenly transferred to structure sheaf.
Two layers of spring 8 is provided in steel case 1, the spring 8 of lower layer is set on bottom plate i.e. lower layer's steel plate 4 of steel case 1, upper layer
Spring 8 be set on middle level steel plate 5.The spring 8 of lower layer is strong spring, and the spring 8 on upper layer is weak spring.Upper two layers steel plate
With the substantially same area of lower layer's steel plate, the only thickness of side steel plate less, upper two layers steel plate respectively with following steel plate and side steel plate
Form the closed hexahedron that a top can be compressed.
6 surrounding of upper layer steel plate and the gap of 1 surrounding of steel case are provided with the closed bed course of caoutchouc elasticity, when steel plate stress deformation
Gap can be reduced, closed case internal and external pressure difference is effectively utilized.
Using the formula principle of Mv=ft, M indicates that falling rocks quality, V indicate that falling rocks speed, f indicate rock-fall impact in structure
Power, t indicate falling rocks and structural impact time.
In the case where falling rocks quality and speed are constant, extend the action time of falling rocks and structure, will directly reduce and fall
The impact force of stone.Above rock-fall impact when steel plate, upper layer steel plate and steel grating stress move down, while transmitting the force to bullet
Spring is transmitted to lower layer's steel plate and passes to structure sheaf again again.Spring-compressed extends action time.And when upper layer steel plate is downward,
Air is compressed in hexahedron, and air gives upper layer steel plate one upward reaction force, while air can be arranged outward along gap
Go out.
After falling rocks is stablized, springback when upper two layers steel plate is sprung back upwards, may drive lower layer's steel plate after bouncing
It springs back together, it is unfavorable to foot guard structure.After in substantially closed hexahedron, substantially closed hexahedral inner air pressure
After contracting outside row to hexahedron, it is less than extraneous air density in springback process internal atmospheric density, air resorption passes through air pressure
Difference gives one downward reaction force of upper layer steel plate, effectively extends the recoil of spring time, reduces screen resilience, reduces because of spring
Moment bounces the harmful tractive force for driving bottom upward.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And to any equivalent transformation that technical solution of the present invention is taken, it is that claim of the invention is covered.
Claims (6)
1. approximate closed steel case adds spring buffer layer, it is characterised in that：
The buffer layer is set to above the structure sheaf of rock-fall proof structural top, including the not steel case of top surface（1）, steel case（1）
Inside it has been evenly arranged spring（8）, spring（8）Top is provided with upper layer steel plate（6）, upper layer steel plate（6）With steel case（1）Composition top
The closed hexahedron that can be compressed.
2. the closed steel case of approximation according to claim 1 adds spring buffer layer, it is characterised in that：
Upper layer steel plate（6）Bottom surface is welded with steel grating（7）.
3. the closed steel case of approximation according to claim 1 adds spring buffer layer, it is characterised in that：
Steel case（1）Inside it is provided with two layers of spring（8）, the spring of lower layer（8）It is set to steel case（1）Bottom plate, that is, lower layer's steel plate（4）
On, the spring on upper layer（8）It is set to middle level steel plate（5）On.
4. the closed steel case of approximation according to claim 3 adds spring buffer layer, it is characterised in that：
The spring of lower layer（8）For strong spring, the spring on upper layer（8）For weak spring.
5. the closed steel case of approximation according to claim 1 adds spring buffer layer, it is characterised in that：
Upper layer steel plate（6）Surrounding and steel case（1）The gap of surrounding is provided with the closed bed course of caoutchouc elasticity.
6. the closed steel case of approximation according to claim 1 adds spring buffer layer, it is characterised in that：
Steel case（1）Bottom plate, that is, lower layer's steel plate（4）It is provided with sand bedding course between the structure sheaf of rock-fall proof structural top（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810522450.5A CN108517796A (en) | 2018-05-28 | 2018-05-28 | Approximate closed steel case adds spring buffer layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810522450.5A CN108517796A (en) | 2018-05-28 | 2018-05-28 | Approximate closed steel case adds spring buffer layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108517796A true CN108517796A (en) | 2018-09-11 |
Family
ID=63427531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810522450.5A Pending CN108517796A (en) | 2018-05-28 | 2018-05-28 | Approximate closed steel case adds spring buffer layer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653109A (en) * | 2019-02-02 | 2019-04-19 | 四川省交通运输厅交通勘察设计研究院 | A kind of spring grid combination damping device suitable for rescue and relief work steel hangar tunnel |
| CN111058390A (en) * | 2019-12-17 | 2020-04-24 | 石家庄铁道大学 | A rockfall protector for open cut tunnel top |
| CN111335193A (en) * | 2020-03-01 | 2020-06-26 | 西南交通大学 | Box-type modular layered composite anti-hardening sand cushion unit at top of shed tunnel and construction method |
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| CN106369098A (en) * | 2016-10-08 | 2017-02-01 | 西南交通大学 | Novel air spring for two-grade rigidity self-adaptive adjustment |
| CN106522274A (en) * | 2017-01-10 | 2017-03-22 | 吉林大学 | Assembly type spring energy dissipation cushion protecting structure for preventing landfall and rockfall of top of shed chamber |
| CN106974357A (en) * | 2017-05-27 | 2017-07-25 | 浙江工贸职业技术学院 | A kind of damping shoe |
| CN206571877U (en) * | 2017-01-23 | 2017-10-20 | 山东哈迪斯机车配件有限公司 | A kind of air spring damper |
| CN107420475A (en) * | 2017-06-14 | 2017-12-01 | 安徽国防科技职业学院 | A kind of pneumatic bumper of washing machine, dryer |
| CN207362708U (en) * | 2017-09-16 | 2018-05-15 | 兰州工业学院 | A kind of high-performance bridge construction anti-drop device |
| CN208293451U (en) * | 2018-05-28 | 2018-12-28 | 中铁第一勘察设计院集团有限公司 | A kind of closed steel case of approximation adds spring buffer layer |
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2018
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Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455731A (en) * | 1934-10-16 | 1936-10-27 | Fein Maschb Ges Mit Beschraenk | Improvements in or relating to shock absorbers |
| CN102203369A (en) * | 2008-10-23 | 2011-09-28 | 拉玛德卡尼股份公司 | Damper |
| CN101709756A (en) * | 2009-09-21 | 2010-05-19 | 桂来强 | Vibration damper |
| CN104696411A (en) * | 2013-12-06 | 2015-06-10 | 中国飞机强度研究所 | Fixed-frequency type air damping vibration isolator |
| CN205331311U (en) * | 2015-12-17 | 2016-06-22 | 浙江亚厦装饰股份有限公司 | Floor damping device |
| CN106369098A (en) * | 2016-10-08 | 2017-02-01 | 西南交通大学 | Novel air spring for two-grade rigidity self-adaptive adjustment |
| CN106522274A (en) * | 2017-01-10 | 2017-03-22 | 吉林大学 | Assembly type spring energy dissipation cushion protecting structure for preventing landfall and rockfall of top of shed chamber |
| CN206571877U (en) * | 2017-01-23 | 2017-10-20 | 山东哈迪斯机车配件有限公司 | A kind of air spring damper |
| CN106974357A (en) * | 2017-05-27 | 2017-07-25 | 浙江工贸职业技术学院 | A kind of damping shoe |
| CN107420475A (en) * | 2017-06-14 | 2017-12-01 | 安徽国防科技职业学院 | A kind of pneumatic bumper of washing machine, dryer |
| CN207362708U (en) * | 2017-09-16 | 2018-05-15 | 兰州工业学院 | A kind of high-performance bridge construction anti-drop device |
| CN208293451U (en) * | 2018-05-28 | 2018-12-28 | 中铁第一勘察设计院集团有限公司 | A kind of closed steel case of approximation adds spring buffer layer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653109A (en) * | 2019-02-02 | 2019-04-19 | 四川省交通运输厅交通勘察设计研究院 | A kind of spring grid combination damping device suitable for rescue and relief work steel hangar tunnel |
| CN111058390A (en) * | 2019-12-17 | 2020-04-24 | 石家庄铁道大学 | A rockfall protector for open cut tunnel top |
| CN111335193A (en) * | 2020-03-01 | 2020-06-26 | 西南交通大学 | Box-type modular layered composite anti-hardening sand cushion unit at top of shed tunnel and construction method |
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