CN208309299U - A kind of Karst region railway bed substrate antidumping foundation reinforcing structure - Google Patents
A kind of Karst region railway bed substrate antidumping foundation reinforcing structure Download PDFInfo
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- CN208309299U CN208309299U CN201820089637.6U CN201820089637U CN208309299U CN 208309299 U CN208309299 U CN 208309299U CN 201820089637 U CN201820089637 U CN 201820089637U CN 208309299 U CN208309299 U CN 208309299U
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Abstract
A kind of Karst region 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.Include: not squeeze into basement rock stake pile group, the basement rock stake of not squeezing into ground is arranged at intervals at by portraitlandscape and is constituted, 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 constituted, respectively squeeze into basement rock stake lower part pass through complete bedrock surface 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, consolidates to form a clump of piles with the stake top for respectively squeezing into basement rock stake；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, in particular to a kind of Karst region railway bed substrate antidumping foundation stabilization knot
Structure.
Background technique
It is influenced in Karst region by karst water fluctuation, corrosion function, bedrock surface Chang Fenghua and sapping are at 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, tubular pole 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 biggish deformation occur, will affect railway 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.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of Karst region railway bed substrate antidumping grounds to 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 region railway foundation bed antidumping foundation reinforcing structure of the invention, it is characterized in that including: not squeeze into
Basement rock stake pile group is arranged at intervals at the basement rock stake of not squeezing into ground by portraitlandscape and constitutes, 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 can lava stratum across the weak weathering of complete bedrock surface insertion
Certain depth；Stake top construct is located at the top for squeezing into basement rock stake pile group, with the stake top for 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 popularization and application foreground.
Detailed description of the invention
This specification includes following five width attached drawing:
Fig. 1 is a kind of cross-section diagram of Karst region 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 region 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 region 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 region 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 region railway bed substrate antidumping foundation reinforcing structure of the present invention
Figure.
Component name and corresponding label are shown in figure: squeezing into basement rock stake 10, does not squeeze into basement rock stake 20, ground beam 31, holds
Support plate 32, cushion 33, lower blotter 331, TGXG 332, upper blotter 333, soil base A, weak weathering are solvable
Rock stratum B, railway bed filling body C, complete bedrock surface D.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to Fig.1, a kind of Karst region railway foundation bed antidumping foundation reinforcing structure includes: not squeeze into basement rock stake stake
Group, is arranged at intervals at the basement rock stake 20 of not squeezing into ground by portraitlandscape and constitutes, 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 constituted every the basement rock stake 10 of squeezing into of setting, the lower part for respectively squeezing into basement rock stake 10 can lava across the weak weathering of complete bedrock surface D insertion
Stratum certain depth；Stake top construct is located under foundation surface and squeezes into the top of basement rock stake pile group, and respectively squeezes into basement rock stake 10
Stake top consolidate to form a clump of piles；Cushion 33, in not squeezing into basement rock stake pile group respectively, be layed in ground base table on stake top construct
On face, railway bed filling body C is filled on cushion 33.
Referring to Fig.1, ground is reinforced jointly by not squeezing into basement rock stake pile group, squeezing into basement rock stake pile group, can effectively reduce
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.The clump of piles for squeezing into the stake of basement rock pile group and the formation of stake top construct is 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 tubular pole 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.
Referring 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 protrudes 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.
Referring 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 protrude into loading plate 32 certain length and with 32 main reinforcement bind of loading plate or weldering
It connects, the consolidation for squeezing into basement rock stake 10 Yu loading plate 32 is realized eventually by the concrete for pouring loading plate 32.Carrying after forming
Plate 32 will squeeze into basement rock stake 10 and be connected to form that an 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 in conjunction with upper load and deformation requirements inspection.Pole
It holds under operating condition 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
At a clump of piles.
Referring 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 load 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 333 being successively laid with from below to up are constituted.
Referring to Fig. 5, the working principle of antidumping foundation reinforcing structure of the present invention are as follows: upper load F3 passes through cushion
33 uniformly transfer and respectively reinforce stake top in substrate ground, squeezing into basement rock stake 10 and do not squeeze into basement rock stake 20 by certain stake spacing
F2, F3 are provided, ensure bearing capacity and vertical deformation requirement；Inter-pile soil can squeeze, along inclination bedrock surface under upper load effect
A slanting directed force F 3 and a steering M along bedrock surface are generated, basement rock pile group stake top is squeezed into and stake item construct is rigid
Property connects to form entirety, provides the power of a resistance to plucking and shearing resistance to offset overturning effect.The structure can effectively solve bedrock surface
The problem of tilting the bottom stab ilization antidumping in precipitous location is particularly suitable for Karst region karsts developing area bottom stab ilization, has
The features such as antidumping effect is good, easy for construction, economic has wide popularization and application foreground.
A kind of some principles of substrate antidumping foundation reinforcing structure in Karst region described above that only explains through diagrams,
Shown in being not intended to for the present invention to be confined to and in the specific structure and the scope of application, therefore all it may be utilized
Corresponding modification and equivalent belong to the applied the scope of the patents of the present invention.
Claims (7)
1. a kind of Karst region railway bed substrate antidumping foundation reinforcing structure, it is characterized in that including: not squeeze into basement rock stake
Pile group is arranged at intervals at the basement rock stake (20) of not squeezing into ground by portraitlandscape and constitutes, do not squeeze into the stake of basement rock stake (20) respectively
Bottom is located 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 indulging
It is constituted to squeeze into basement rock stake (10) being horizontally arranged at interval, the lower part for respectively squeezing into basement rock stake (10) is embedding across complete bedrock surface (D)
Entering 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, with
The stake top for respectively squeezing into basement rock stake (10) consolidates to form a clump of piles；Cushion (33), in do not squeeze into basement rock stake pile group respectively, stake top is constructed
It is layed on foundation surface on body, railway bed filling body (C) is filled on cushion (33).
2. a kind of Karst region railway bed substrate antidumping foundation reinforcing structure as described in claim 1, it is characterized in that:
It is described that not squeeze into basement rock stake (20) be cement fly ash gravel pile, cement mixing pile or tubular pole.
3. a kind of Karst region railway bed substrate antidumping foundation reinforcing structure as described in claim 1, it is characterized in that:
Described squeeze into basement rock stake (10) are reinforced concrete drilling stake.
4. a kind of Karst region railway bed substrate antidumping foundation reinforcing structure as claimed in claim 3, it is characterized in that:
It is described squeeze into basement rock stake (10) be embedded in weak weathering can lava stratum depth not less than 3m.
5. a kind of Karst region railway bed substrate antidumping foundation reinforcing structure as described in claim 1, it is characterized in that:
The stake top construct is the ground beam (31) or loading plate (32) of reinforced concrete structure.
6. a kind of Karst region railway bed substrate antidumping foundation reinforcing structure as described in claim 1, it is characterized in that:
The cushion (33) is by the lower blotter (331), TGXG (332) and the upper blotter that are successively laid with from below to up
(333) it constitutes.
7. a kind of Karst region railway bed substrate antidumping foundation reinforcing structure as described in claim 1, it is characterized in that:
The setting range of the stake top construct extends laterally to the top for not squeezing into basement rock stake pile group, and basement rock stake is not squeezed into part covering
Pile group, and a clump of piles is formed with basement rock stake (20) consolidation of not squeezing under it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820089637.6U CN208309299U (en) | 2018-01-18 | 2018-01-18 | A kind of Karst region railway bed substrate antidumping foundation reinforcing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820089637.6U CN208309299U (en) | 2018-01-18 | 2018-01-18 | A kind of Karst region railway bed substrate antidumping foundation reinforcing structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130826A (en) * | 2018-01-18 | 2018-06-08 | 中铁二院工程集团有限责任公司 | A kind of karst railway bed substrate antidumping foundation reinforcing structure |
| CN110952388A (en) * | 2019-12-17 | 2020-04-03 | 同济大学 | High-speed railway wide roadbed compaction pile combined pile network foundation structure and design method |
| CN111188236A (en) * | 2020-01-16 | 2020-05-22 | 西南交通大学 | Soft soil foundation reinforcing structure under high embankment |
-
2018
- 2018-01-18 CN CN201820089637.6U patent/CN208309299U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130826A (en) * | 2018-01-18 | 2018-06-08 | 中铁二院工程集团有限责任公司 | A kind of karst railway bed substrate antidumping foundation reinforcing structure |
| CN110952388A (en) * | 2019-12-17 | 2020-04-03 | 同济大学 | High-speed railway wide roadbed compaction pile combined pile network foundation structure and design method |
| CN111188236A (en) * | 2020-01-16 | 2020-05-22 | 西南交通大学 | Soft soil foundation reinforcing structure under high embankment |
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