CN108130826A - A kind of karst railway bed substrate antidumping foundation reinforcing structure - Google Patents
A kind of karst railway bed substrate antidumping foundation reinforcing structure Download PDFInfo
- Publication number
- CN108130826A CN108130826A CN201810050472.6A CN201810050472A CN108130826A CN 108130826 A CN108130826 A CN 108130826A CN 201810050472 A CN201810050472 A CN 201810050472A CN 108130826 A CN108130826 A CN 108130826A
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- Prior art keywords
- stake
- basement rock
- squeezing
- foundation
- rock stake
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/08—Deep or vertical foundation
Abstract
A kind of karst railway bed substrate antidumping foundation reinforcing structure tilts precipitous location ground and consolidation effect to effectively improve karsts developing area substrate bedrock surface, avoids its substrate that sliding, lateral deviation occurs or topples, it is ensured that railroad embankment safety.Including：Basement rock stake pile group is not squeezed into, and the basement rock stake of not squeezing into being arranged at intervals at by portraitlandscape in ground is formed, and the stake bottom for not squeezing into basement rock stake respectively is located on complete bedrock surface；Squeeze into basement rock stake pile group, be set in the ground for not squeezing into basement rock stake pile group side, squeezed into basement rock stake by portraitlandscape is spaced and formed, respectively squeeze into basement rock stake lower part complete bedrock surface is passed through to be embedded in weak weathering can lava stratum certain depth；Stake top construct is located at the top for squeezing into basement rock stake pile group under foundation surface, and the stake top with respectively squeezing into basement rock stake, which consolidates, to form a clump of piles；Cushion, in not squeezing into basement rock stake pile group respectively, being layed on foundation surface on stake top construct, railway bed filling body is filled on cushion.
Description
Technical field
The present invention relates to geotechnical engineering, more particularly to a kind of karst railway bed substrate antidumping foundation stabilization knot
Structure.
Background technology
Fluctuated in karst by karst water, corrosion function is influenced, bedrock surface Chang Fenghua and sapping are into wavy, honeycomb
Shape, funnel-form, the gradient that bedrock surface height rises and falls, elevation variation is violent, local dip is precipitous is often suddenly in 1:2.5, such case
If foundation stabilization need to be taken by the requirement railway foundation bed of bearing capacity or post-construction deformation down, the ground of basement rock routinely cannot be introduced into
Reinforce such as CFG, cement mixing pile, pile pile stake bottom can be placed on inclined bedrock surface, on top the loads such as filler work
Sliding, lateral deviation can occur under, and then influence bottom stab ilization effect and larger deformation occur, railway will be influenced when serious
Operation security.Although drilled pile can squeeze into basement rock, full substrate is high using project cost, and equally exists the wind that sidesway occurs
Danger.Therefore a kind of karsts developing area substrate bedrock surface is needed to tilt the antidumping foundation reinforcing structure in precipitous location to solve existing ask
Topic, while need to have the characteristics that economical, environmentally friendly and easy for construction.
Invention content
The technical problems to be solved by the invention are to provide a kind of karst railway bed substrate antidumping ground and add
Fixing structure tilts precipitous location ground and consolidation effect to effectively improve karsts developing area substrate bedrock surface, its substrate is avoided to occur
Sliding, lateral deviation are toppled, it is ensured that railroad embankment safety.
The technical solution adopted by the present invention to solve the technical problems is as follows：
A kind of karst railway foundation bed antidumping foundation reinforcing structure of the present invention, it is characterized in that including：It does not squeeze into
Basement rock stake pile group, the basement rock stake of not squeezing into being arranged at intervals at by portraitlandscape in ground are formed, and do not squeeze into the stake bottom of basement rock stake respectively
On complete bedrock surface；Basement rock stake pile group is squeezed into, is set in the ground for not squeezing into basement rock stake pile group side, by portraitlandscape
Spaced to squeeze into basement rock stake composition, the lower part for respectively squeezing into basement rock stake passes through the weak weathering of complete bedrock surface insertion can lava stratum
Certain depth；Stake top construct is located at the top for squeezing into basement rock stake pile group, the stake top with respectively squeezing into basement rock stake under foundation surface
Consolidation forms a clump of piles；Cushion, in not squeezing into basement rock stake pile group respectively, be layed on foundation surface on stake top construct, iron
Road roadbed filling body is filled on cushion.
The invention has the advantages that can effectively improve karsts developing area substrate bedrock surface tilts precipitous location ground and reinforcing
Effect, the clump of piles for squeezing into the stake of basement rock pile group and the formation of stake top construct provide lateral restriction not squeeze into basement rock stake pile group, keep away
Exempt from substrate sliding, lateral deviation occurs and topples, antidumping works well, it can be ensured that railroad embankment safety；With squeeze into basement rock stake pile group,
The common consolidated subsoil of basement rock stake pile group is not squeezed into, can effectively reduce foundation stabilization cost, and there is good economy；Construction party
Just, there is wide popularizing application prospect.
Description of the drawings
This specification includes following five width attached drawing：
Fig. 1 is a kind of cross-section diagram of karst railway bed substrate antidumping foundation reinforcing structure of the present invention；
Fig. 2 is to squeeze into basement rock pile group in a kind of karst railway bed substrate antidumping foundation reinforcing structure of the present invention
The plan view of stake；
Fig. 3 is to squeeze into basement rock pile group in a kind of karst railway bed substrate antidumping foundation reinforcing structure of the present invention
The plan view of stake；
Fig. 4 is the knot of cushion in a kind of karst railway bed substrate antidumping foundation reinforcing structure of the present invention
Structure schematic diagram；
Fig. 5 is a kind of force way signal of karst railway bed substrate antidumping foundation reinforcing structure of the present invention
Figure.
Component name and corresponding label are shown in figure：Basement rock stake 10 is squeezed into, basement rock stake 20 is not squeezed into, ground beam 31, holds
Support plate 32, cushion 33, lower blotter 331, TGXG 332, upper blotter 331, soil base A, weak weathering are solvable
Rock stratum B, railway bed filling body C, complete bedrock surface D.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
With reference to Fig. 1, a kind of karst railway foundation bed antidumping foundation reinforcing structure includes：Basement rock stake stake is not squeezed into
Group, the basement rock stake 20 of not squeezing into being arranged at intervals at by portraitlandscape in ground are formed, and the stake bottom for not squeezing into basement rock stake 20 respectively is located at
On complete bedrock surface D；Basement rock stake pile group is squeezed into, is set in the ground for not squeezing into basement rock stake pile group side, by between portraitlandscape
It is formed every the basement rock stake 10 of squeezing into of setting, the lower part for respectively squeezing into basement rock stake 10 passes through the weak weathering of complete bedrock surface D insertions can lava
Stratum certain depth；Stake top construct is located at the top for squeezing into basement rock stake pile group, with respectively squeezing into basement rock stake 10 under foundation surface
Stake top consolidate to form a clump of piles；Cushion 33, in not squeezing into basement rock stake pile group respectively, ground base table is layed on stake top construct
On face, railway bed filling body C is filled on cushion 33.
With reference to Fig. 1, ground by not squeezing into basement rock stake pile group, squeezing into basement rock stake pile group is reinforced, can effectively be reduced jointly
Foundation stabilization cost has good economy.Basement rock stake pile group is squeezed into setting in the ground for not squeezing into basement rock stake pile group side,
The top and stake top construct consolidation for squeezing into basement rock stake pile group are formed as one a clump of piles, and the lower part insertion for respectively squeezing into basement rock stake 10 is weak
Weathering can lava stratum certain depth.A clump of piles for the stake of basement rock pile group and the formation of stake top construct is squeezed into not squeeze into basement rock stake pile group
Lateral restriction is provided, avoids substrate that sliding, lateral deviation occurs and topples, antidumping works well, it can be ensured that railroad embankment safety
It is described not squeeze into basement rock stake 20 and can be used cement fly ash gravel pile, cement mixing pile or pile pile etc., cost compared with
It is low.It is described to squeeze into basement rock stake 10 and use reinforced concrete drilling stake, be embedded in weak weathering can the depth on lava stratum should meet iron
Road requirement of settlement control and undertake upper load requirement, usually not less than 3m.
With reference to Fig. 2, the stake top construct is the ground beam 31 of reinforced concrete structure.Ground beam 31 will squeeze into basement rock stake pile group
In respectively squeeze into basement rock stake 10 stake top it is lateral, connected longitudinally, the stake top reserved steel bar for respectively squeezing into basement rock stake 10 is stretched into ground beam 31
Certain length, and with 31 main reinforcement bind of ground beam or welding, eventually by pour 31 concrete of ground beam realization squeeze into basement rock stake pile group
With the consolidation of ground beam 31.Ground beam 31 after forming will squeeze into basement rock stake 10 and be connected to form an antidumping clump of piles entirety, and to side
The flatter basement rock stake 20 of not squeezing into of side group scar provides sidewise restraint.
With reference to Fig. 3, the stake top construct can also use the loading plate 32 of reinforced concrete structure.Respectively squeeze into basement rock stake
10 consolidate with loading plate 52, stake top reserved steel bar stretch into loading plate 32 certain length and with 32 main reinforcement bind of loading plate or weldering
It connects, is realized eventually by the concrete for pouring loading plate 32 and squeeze into basement rock stake 10 and the consolidation of loading plate 32.Carrying after forming
Plate 32 will squeeze into basement rock stake 10 and be connected to form that antidumping clump of piles is whole, and to side bedrock surface it is flatter do not squeeze into basement rock
Stake 20 provides sidewise restraint.
Squeezing into basement rock stake 10 and not squeezing into 20 spacing of basement rock stake should calculate and determine with reference to upper load and deformation requirements inspection.Pole
It holds under operating mode to ensure antidumping effect, the setting range of the stake top construct, which can extend laterally to, does not squeeze into basement rock pile group
The top of stake, basement rock pile group stake is not squeezed into part covering or all covering, and consolidates shape with the basement rock stake 20 of not squeezing under it
Into a clump of piles.
With reference to Fig. 4, foundation stabilization is laid with cushion 33 after the completion of applying on foundation surface, and top railway bed is filled out
Building body C loads and other loads are evenly transferred on the ground of substrate.33 thickness of cushion is typically no less than 0.4m, by
Lower blotter 331, TGXG 332 and the upper blotter 331 being laid with successively from below to up are formed.
With reference to Fig. 5, the operation principle of antidumping foundation reinforcing structure of the present invention is：Upper load F3 passes through cushion 33
It uniformly transfers and respectively reinforces stake top in substrate ground, squeezing into basement rock stake 10 and not squeezing into basement rock stake 20 and carry by certain stake spacing
For F2, F3, bearing capacity and vertical deformation requirement are ensured；Inter-pile soil can be squeezed, be produced along inclination bedrock surface under upper load effect
A raw slanting directed force F 3 and a steering M along bedrock surface squeeze into basement rock pile group stake top and stake item construct rigidity
Connection forms entirety, provides the power of a resistance to plucking and shearing resistance to offset overturning effect.The structure can effectively solve bedrock surface and incline
The problem of bottom stab ilization antidumping in oblique precipitous location, karst karsts developing area bottom stab ilization is particularly suitable for, had anti-
The features such as effect of toppling is good, easy for construction, economic has wide popularizing application prospect.
The above is a kind of some principles of karst substrate antidumping foundation reinforcing structure that explain through diagrams,
Be not intended to by the present invention be confined to shown in and the concrete structure and the scope of application in, it is therefore every it is possible that being utilized
Corresponding modification and equivalent belong to the apllied the scope of the claims of the present invention.
Claims (7)
1. a kind of karst railway foundation bed antidumping foundation reinforcing structure, it is characterized in that including：Basement rock stake pile group is not squeezed into,
The basement rock stake (20) of not squeezing into being arranged at intervals at by portraitlandscape in ground is formed, and the stake bottom for not squeezing into basement rock stake (20) respectively is located at
On complete bedrock surface (D)；Basement rock stake pile group is squeezed into, is set in the ground for not squeezing into basement rock stake pile group side, by portraitlandscape
Spaced to squeeze into basement rock stake (10) composition, the lower part for respectively squeezing into basement rock stake (10) passes through the embedded weak wind of complete bedrock surface (D)
Change can lava stratum certain depth；Stake top construct is located at the top for squeezing into basement rock stake pile group, with respectively squeezing under foundation surface
The stake top of basement rock stake (10) consolidates to form a clump of piles；Cushion (33), in not squeezing into basement rock stake pile group respectively, on stake top construct
It is layed on foundation surface, railway bed filling body (C) is filled on cushion (33).
2. a kind of karst railway foundation bed antidumping foundation reinforcing structure as described in claim 1, it is characterized in that：It is described
It is cement fly ash gravel pile, cement mixing pile or pile pile not squeeze into basement rock stake (20).
3. a kind of karst railway foundation bed antidumping foundation reinforcing structure as described in claim 1, it is characterized in that：It is described
Basement rock stake (10) is squeezed into as reinforced concrete drilling stake.
4. a kind of karst railway foundation bed antidumping foundation reinforcing structure as claimed in claim 3, it is characterized in that：It is described
Squeeze into the embedded weak weathering of basement rock stake (10) can the depth on lava stratum be not less than 3m.
5. a kind of karst railway foundation bed antidumping foundation reinforcing structure as described in claim 1, it is characterized in that：It is described
Stake top construct is the ground beam (31) of reinforced concrete structure or loading plate (32).
6. a kind of karst railway foundation bed antidumping foundation reinforcing structure as described in claim 1, it is characterized in that：It is described
Cushion (33) is by the lower blotter (331), TGXG (332) and the upper blotter that are laid with successively from below to up
(331) it forms.
7. a kind of karst railway foundation bed antidumping foundation reinforcing structure as described in claim 1, it is characterized in that：It is described
The setting range of stake top construct extends laterally to the top for not squeezing into basement rock stake pile group, and basement rock stake stake is not squeezed into part covering
Group, and form a clump of piles with basement rock stake (20) consolidation of not squeezing under it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810050472.6A CN108130826A (en) | 2018-01-18 | 2018-01-18 | A kind of karst railway bed substrate antidumping foundation reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810050472.6A CN108130826A (en) | 2018-01-18 | 2018-01-18 | A kind of karst railway bed substrate antidumping foundation reinforcing structure |
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| Publication Number | Publication Date |
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| CN108130826A true CN108130826A (en) | 2018-06-08 |
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| CN201810050472.6A Pending CN108130826A (en) | 2018-01-18 | 2018-01-18 | A kind of karst railway bed substrate antidumping foundation reinforcing structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113430870A (en) * | 2021-07-22 | 2021-09-24 | 湖北兴利源建设工程有限公司 | Roadbed structure for green reinforcement treatment of newly-built railway karst foundation and construction method thereof |
| CN115045152A (en) * | 2022-06-16 | 2022-09-13 | 广州市第二市政工程有限公司 | Construction method of tubular pile and cement mixing pile soft soil roadbed boundary section toughness frame type composite foundation |
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