CN105696426B - It is a kind of to handle the construction method and its road structure for closing on both wired soft soil foundations - Google Patents
It is a kind of to handle the construction method and its road structure for closing on both wired soft soil foundations Download PDFInfo
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- CN105696426B CN105696426B CN201610208948.5A CN201610208948A CN105696426B CN 105696426 B CN105696426 B CN 105696426B CN 201610208948 A CN201610208948 A CN 201610208948A CN 105696426 B CN105696426 B CN 105696426B
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Road Paving Structures (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses the construction method and its road structure that a kind of processing closes on both wired soft soil foundations, construction method step is：Flatten place, at safety margin in newly-built toe region of the roadbed far from existing line side of design, multiple rows of rigidity CFG of longitudinally constructing along circuit；In the toe region for closing on existing line side to the newly-built roadbed of design at safety margin, along the longitudinal flexible rotary churning pile of the multiple rows of construction of construction of circuit；Above CFG rigid, flexible rotary churning pile, at the top of Soft Soil Layer mattress layer is longitudinally laid with along circuit；By design above mattress layer roadbed paving.The present invention not only effectively increases foundation bearing capacity, and the settlement after construction for reducing roadbed ensure that soft soil roadbed stability, will not also have a negative impact to both wired safe operation.Foundation reinforcing structure form of the present invention is simple, and ground adaptability is good, and technology is reasonable, cost, has more wide application value.
Description
Technical field
The present invention relates to geotechnical engineering field, in particular to a kind of processing close on both construction methods of wired soft soil foundation and
Its road structure.
Background technology
To ensure high speed traveling safety, high-speed railway is high to post-construction settlement of subgrade requirement, sinks after ballastless track roadbed work
The relative settlement that 15mm, bridge or tunnel road changeover portion is generally not to be exceeded in drop should not exceed 5mm.High-speed iron is built in soft clay area
Road and because being limited by yard or other conditions, it is necessary to using roadbed form by when, then need to take rational basement process
Measure, so that post-construction settlement of subgrade is within control standard.Structure includes hard stratum, is located at general soft soil foundation from bottom to up
Soft Soil Layer above hard stratum, Soft Soil Layer top surface are earth's surface, use single type to the treatment measures of soft soil foundation at present more
Rigid CFG pile composite foundations, most common for CFG pile net structure composite foundations, " net " in " stake net " structure be sand, broken
Stone and direction earthwork grille form certain thickness mattress layer, and " stake " is CFG, upper load is made to be evenly transferred to lower sleeping soil
Layer, to meet ground requirement for bearing capacity, effectively controls settlement after construction.Chinese invention patent (Publication No. CN101148891A)
" for expressway soft foundation processing in rigid and flexible long-short pile composite foundation " in disclose a kind of CFG long stakes of rigidity,
Flexible stub is alternately distributed setting, upper end is laid with the structure of mattress layer.
With flourishing for railway construction in China cause, the railway network is increasingly flourishing, and newly built railway and existing railway line are not
It is evitable to generate parallel.When carrying out CFG stake net basement process to newly built railway soft soil foundation, because of CFG pile machine equipments height
Degree is up to more than 24m, and center of gravity is high, and self-stability is poor, and frequent movement is needed in work progress, can not effective protection, have and toppled intrusion both
The possibility of Wired Security gauge causes danger to both wired safe operations；After another construction every time, construction equipment must be removed
Other than safe distance, the duration can be greatly prolonged, increases engineering cost.
Therefore it for the above situation, needs to develop a kind of consolidation process and closes on both wired high-speed railway soft soil foundation
Construction method and its road structure, can not only improve foundation bearing capacity, reduce post-construction settlement of subgrade, to both wired peace during construction
Battalion for the national games will not have an adverse effect.
Invention content
Present invention aim to solve the deficiency of above-mentioned background technology, provide it is a kind of both met post-construction settlement of subgrade and
The requirement of bearing capacity but can protect both wired safe operations, close on both wired high-speed railway soft soil foundation construction method and
Its road structure.
The technical scheme is that：It is a kind of to handle the construction method for closing on both wired soft soil foundations, which is characterized in that step
Suddenly it is：
A. flatten place, at safety margin in toe region of the roadbed of design far from existing line side, along the line
Multiple rows of rigidity CFG of road longitudinal direction construction；
B. it longitudinally constructs in the toe region for closing on existing line side to the roadbed of design at safety margin, along circuit
Multiple rows of flexible rotary churning pile of construction, rigidity CFG both pass through Soft Soil Layer to hard stratum with flexible rotary churning pile stake bottom, and stake top is extremely
Soft Soil Layer top surface；
C. after rigidity CFG, flexible churning pile concrete reach design strength, on CFG rigid, flexible rotary churning pile
At the top of side, Soft Soil Layer mattress layer is longitudinally laid with along circuit；
D. by design, roadbed paving, the roadbed slope foot edge are concordant with mattress layer transverse edge above mattress layer.
Preferably, the rigidity CFG stakes are equipped with pile cover, and the pile cover top flushes in flexible rotary churning pile top.
Preferably, it is respectively arranged in step a outside slope foot of the CFG roadbeds in design of rigidity far from existing line side, Xiang Yuan
Continue to set 1-2 root rigidity CFG from existing line direction；Flexible rotary churning pile is respectively arranged in step b to close on both in the roadbed of design
Have outside the slope foot of circuit side, continue to set 1-2 root flexibility rotary churning piles to existing line direction.
Preferably, the flexible rotary churning pile stake diameter is 0.6-0.7m, and stake spacing is 2-3 times of stake diameter；Described CFG stakes of rigidity
Diameter is 0.5-0.6m, and stake spacing is 3-5 times of stake diameter.
Preferably, it constructs in step b before flexible rotary churning pile, constructs between the roadbed and existing line of design and indulged along circuit
To a row stress relief hole, the stress relief hole hole depth is the same as flexible rotary churning pile stake bottom depth, spacing 3-4m.
Preferably, adjacent two rows rigidity the distance between CFG is equal between multiple rows of rigidity CFG, often between row's rigidity CFG
Distance is equal between adjacent two rigidity CFG side by side；Between multiple rows of flexibility rotary churning pile between adjacent two rows of flexible rotary churning piles away from
From equal, distance is equal between often arranging adjacent two flexible rotary churning piles between flexible rotary churning pile side by side.
Further, between adjacent two rows of rigidity CFG, laterally aligned arrangement or lateral friendship between adjacent two rows of flexible rotary churning piles
Mistake arrangement.
The present invention also provides the road structures that a kind of processing closes on both wired soft soil foundations, which is characterized in that including being laid with
Mattress layer at the top of Soft Soil Layer and the roadbed for being laid on above mattress layer, closing on existing line, from peace below the mattress layer
At full boundary in toe region of the roadbed far from existing line side, along longitudinally disposed multiple rows of rigidity CFG of circuit, the cotton-padded mattress
In the toe region for closing on existing line side to roadbed at safety margin below bed course, along the longitudinally disposed multiple rows of flexibility of circuit
Rotary churning pile, the flexibility rotary churning pile and CFG stake bottoms of rigidity are both passed through in Soft Soil Layer to hard stratum, and stake top is to Soft Soil Layer top
Face.
Preferably, the flexible rotary churning pile stake diameter is 0.6-0.7m, and stake spacing is 2-3 times of stake diameter；Described CFG stakes of rigidity
Diameter is 0.5-0.6m, and stake spacing is 3-5 times of stake diameter.
Preferably, the mattress layer is from bottom to top successively by blotter, medium coarse sand bed course, direction earthwork grille, second
Medium coarse sand bed course and the second blotter are laid with.
Advantages of the present invention is：
1. rigidity CFG, the outer CFG machines of safety margin are set using CFG pile machine equipments on the outside of 23-25m safety margins
The height of 25m will not cause danger to both wired, will not reduce construction efficiency；Inside uses the churning pile machine equipment of height 3m
Rotary churning pile is set, therefore reinforced soft soil ground is carried out using rotary churning pile within safety clearance, both Wired Securities had both been protected or can improve
Construction efficiency.
2. rigid CFG and flexible rotary churning pile are used cooperatively, the heavy and flexible rotary churning pile of control CFG rigid is gathered
Crowd in-out effects, top covering mattress layer can more fully play the bearing capacity of inter-pile soil, and the control for both having met settlement after construction will
It asks, and greatly reduces project cost.
3. not only effectively increasing foundation bearing capacity, the settlement after construction for reducing roadbed ensure that high-speed railway soft soil subgrade
Stability, will not also have a negative impact to both wired safe operation.Foundation reinforcing structure form of the present invention is simple, stratum
Adaptability is good, and technology is reasonable, cost, has more wide application value.
Description of the drawings
Fig. 1 is to be of the invention along roadbed transversary schematic diagram
Fig. 2 is mattress layer along roadbed transversary schematic diagram
Fig. 3 arranges schematic diagram for CFG equilateral triangles of rigidity
Fig. 4 is CFG arranged in squares schematic diagrames of rigidity
Wherein：1. 6. mattress layer of the flexible rotary churning pile of 2. Soft Soil Layer of roadbed, 3. hard stratum, 4. rigidity CFG stakes 5. 7.
6.2 medium coarse sand bed course of cap 8. stress relief hole, 9. existing line, 10. safety margin, 6.1 blotter, 6.3 two-way geotechnique
6.4 second medium coarse sand bed course of grid, 6.5 second blotter.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, offer processing of the present invention closes on the road structure of both wired soft soil foundations, soft soil foundation is from bottom to up
Structure includes hard stratum 3, the Soft Soil Layer 2 above hard stratum 3, and road structure includes the mattress for being laid on 2 top of Soft Soil Layer
Layer 6 and the roadbed 1 for being laid on above mattress layer 6, closing on existing line 9,1 side of roadbed is that existing line 9 (is in the present embodiment
Right side).The safety margin 10 of existing line of the present invention construct rigidity CFG when equipment existing line 9 is not had an impact
Transverse confinement, the safety margin 10 of existing line 9 are located in roadbed 1 (between two slope foots), and roadbed 1 closes on both wired in the present embodiment
9 side slope foot of road is inside slope foot, is outside slope foot far from 9 side slope foot of existing line.
It is set at 1 outside slope foot to safety margin 10 of roadbed, along circuit is longitudinally spaced in the Soft Soil Layer 2 of 6 lower section of mattress layer
Multiple rows of rigidity CFG stakes 4 are put, are indulged at 1 inside slope foot to safety margin 10 of roadbed, along circuit in the Soft Soil Layer 2 of 6 lower section of mattress layer
To the multiple rows of flexible rotary churning pile 5 of interval setting.Soft soil foundation i.e. except 9 safety margin 10 of existing line uses rigidity CFG stakes 4,
Using flexible rotary churning pile 5 within safety clearance 10.
Rigid CFG stakes 4 are equipped with pile cover 7, and 7 top of pile cover flushes in flexible 5 top of rotary churning pile to 2 top surface of Soft Soil Layer.It is soft
Property rotary churning pile 5 and 4 top of rigidity CFG stakes be laid with mattress layer 6, flexible rotary churning pile 5 and 4 bottoms of rigidity CFG stakes across Soft Soil Layer 2 to
In hard stratum 3.As shown in Fig. 2, mattress layer 6 is from bottom to top successively by blotter 6.1, medium coarse sand bed course 6.2, two-way geotechnological lattice
Grid 6.3, the second medium coarse sand bed course 6.4 and the second blotter 6.5 form.
Adjacent two rows rigidity CFG stakes the distance between 4 are equal between multiple rows of rigidity CFG stakes 4, between often row rigidity CFG stakes 4 side by side
Adjacent two rigidity CFG stakes 4 between distance it is equal；The distance between adjacent two rows of flexible rotary churning piles 5 between multiple rows of flexibility rotary churning pile 5
Equal, distance is equal between often arranging adjacent two flexible rotary churning piles 5 between flexible rotary churning pile 5 side by side.It is adjacent two rows of firm in the present invention
Property CFG stakes 4 between, laterally aligned arrangement or laterally staggered arrangement between adjacent two rows of flexible rotary churning piles 5, adjacent two rows when laterally aligned
Between it is adjacent four formation square arrangement；Adjacent three formation equilateral triangle between adjacent two rows when laterally staggered.Rigid CFG stakes 4
Equilateral triangle arrangement as shown in figure 3, square arrangement as shown in figure 4, in Fig. 3-4 left and right to for circuit longitudinal direction, upward and downward is line
Road is lateral.Either square or equilateral triangle arrangement, pilespacing is identical between arbitrary neighborhood rigidity CFG stakes 4.Flexible rotary churning pile
5 are similarly set with rigidity CFG stakes 4, repeat no more.Wherein, flexible 5 diameter d of rotary churning pile2For 0.6-0.7m, stake space D2For 2-3
Times stake diameter；Rigid 4 diameter d of CFG stakes1For 0.5-0.6m, stake space D1For 3-5 times of stake diameter.
The row stress relief hole 8 along roadbed longitudinal direction, stress relief hole 8 are equipped between 1 inside slope foot of roadbed and existing line 9
Hole depth is the same as flexible 5 bottom depth of rotary churning pile (the present embodiment depth 5-13m), pitch of holes 3-4m.Each flexible rotary churning pile 5 of row is in roadbed 1
Inside slope foot is outer, continues to set 1-2 root flexibilities rotary churning pile 5 to 9 direction of existing line, each to arrange rigidity CFG stakes 4 in 1 outside of roadbed
Slope foot is outer, continues setting 1-2 root rigidity CFG stakes 4 to far from 9 direction of existing line.
The construction method of above structure of the present invention is：
A. place is flattened before stiffening basic ground, rear surveying setting-out refers to fixed pile, new to design at safety margin 10
It longitudinally constructs in slope foot (roadbed 1 is not laid with also at this time, and slope foot position is determined according to design) region, along circuit on the outside of road construction base more
Arrange rigidity CFG stakes 4, stake diameter d1For 0.5-0.6m, stake space D1Generally using 3-5 times of stake diameter, the present embodiment preferably rigidity CFG stakes 4
Stake diameter d1=0.5m, stake space D1=5 times of stake diameters, square or equilateral triangle lay out pile the (side of laying out pile in i.e. aforementioned road structure
), generally arranged when scene lays out pile from roadbed center line toward both sides slope foot likes, as shown in Figure 3-4, until on the outside of roadbed slope foot it is outer, to
Far from 9 direction of existing line (in Fig. 1 to the left), respectively row also continues to be equipped with 1-2 root rigidity CFG stakes 4 (the present embodiment preferably 1), stake
The long Soft Soil Layer that has to penetrate through in principle need to specifically be determined to hard formation according to settlement Control standard by settling inspection calculation.It is CFG rigid
4 tops set pile cover 7, expand pile cover to be round, pile cover top width 0.9m, high 0.5m, cast in situs C25 concrete.
B. the row stress relief hole 8 along 1 longitudinal direction of roadbed is opened up between 1 inside slope foot of the roadbed of design and existing line 9,
8 upper end of stress relief hole and 2 either flush of Soft Soil Layer, aperture 127mm, spacing 3m.To the roadbed of design 1 at safety margin 10
In the toe region of inside, along circuit, longitudinally the flexible rotary churning pile 5 of the multiple rows of construction of construction, stress relief hole 8 can reduce flexible rotation as possible
The influence of 5 pairs of existing lines 9 of stake is sprayed, flexible 5 bottom depth of rotary churning pile are identical with 8 hole depth of stress relief hole.One when scene lays out pile
As from 1 center line of roadbed toward both sides slope foot arrange, until outside 1 inside slope foot of roadbed, to close on 9 direction of existing line (in Fig. 1 to
It is right) each row also continues to be equipped with 1-2 root flexibilities rotary churning pile 5 (the present embodiment preferably 2), stake diameter d2For 0.6-0.7m, stake space D2For
2-3 times of stake diameter, the present embodiment preferably 5 diameter d of flexible rotary churning pile2=0.6m, stake space D2=3 times of stake diameters, square or positive triangle
Shape lays out pile (pile arrangement in i.e. aforementioned road structure), need to specifically be determined according to settlement Control standard by settling inspection calculation.Just
Property CFG stakes 4 and flexible 5 bottoms of rotary churning pile both pass through Soft Soil Layer to hard stratum, stake top is to Soft Soil Layer top surface, rigid CFG stakes 4
(including pile cover 7), the stake top of flexible rotary churning pile 5 are concordant in the horizontal direction with stake bottom.
C. after rigid CFG stakes 4 and flexible 5 concrete strength of pile of rotary churning pile reach design strength, rigid CFG stakes 4 and
Flexible 5 stake top of rotary churning pile, 2 top of Soft Soil Layer set the mattress layer 6 of 0.6m thickness, and one layer of direction earthwork grille 10 of interior laying, both ends are returned
For folding not less than 2.0m, tensile strength is not less than 110kN/m, by thickness is successively from bottom to top 20cm blotters 6.1, in 10cm
Coarse sand bed course 6.2, direction earthwork grille 6.3, the second medium coarse sands of 10cm bed course 6.4 and the second blotters of 20cm composition.
D. the design of newly-built roadbed roadbed paving 1,1 slope foot edge of roadbed and mattress layer above blotter 6 before
Transverse edge is concordant.
CFG pile machine equipments height reaches more than 24m in the present invention, therefore safety margin 10 is away from existing line transverse direction 23-
25m, safety margin outside set rigidity CFG using CFG pile machine equipments, and CFG machine height will not cause danger to both wired；
It had both protected both Wired Securities using the rotary churning pile equipment setting rotary churning pile of height 3m or construction efficiency can be improved in inside.
Claims (9)
1. a kind of handle closes on the construction methods of both wired soft soil foundations, which is characterized in that step is：
A. place is flattened, to toe region of the roadbed (1) far from existing line (9) side of design at safety margin (10)
Interior, multiple rows of rigidity CFG (4) of longitudinally constructing along circuit, each roadbed (1) for arranging rigidity CFG (4) in design is far from existing line
(9) slope foot of side is outer, continues setting 1-2 root rigidity CFG (4) to far from existing line (9) direction；
B. it closes in the toe region of existing line (9) side, indulged along circuit to the roadbed (1) of design at safety margin (10)
To the flexible rotary churning pile (5) of multiple rows of construction of constructing, each flexible rotary churning pile (5) of row closes on existing line (9) one in the roadbed (1) of design
The slope foot of side is outer, continues to set 1-2 root flexibility rotary churning piles (5), rigidity CFG (4) and flexibility to existing line (9) direction
Rotary churning pile (5) stake bottom both passes through Soft Soil Layer (2) to hard stratum (3), and stake top is to Soft Soil Layer top surface；
C. after rigidity CFG (4), flexible rotary churning pile (5) concrete reach design strength, in CFG rigid (4), flexible churning
Above stake (5), at the top of Soft Soil Layer (2) mattress layer (6) is longitudinally laid with along circuit；
D. by design in mattress layer (6) top roadbed paving (1), roadbed (1) the slope foot edge and blotter (6) widthwise edge
Edge is concordant.
2. construction method as described in claim 1, which is characterized in that rigidity CFG (4) is equipped with pile cover (7), described
Pile cover (7) top flushes in flexible rotary churning pile (5) top.
3. construction method as described in claim 1, which is characterized in that it is described flexibility rotary churning pile (5) stake diameter be 0.6-0.7m, stake
Spacing is 2-3 times of stake diameter；Described CFG (4) stake diameters of rigidity are 0.5-0.6m, and stake spacing is 3-5 times of stake diameter.
4. construction method as described in claim 1, which is characterized in that construct before flexible rotary churning pile (5), setting in step b
A row stress relief hole (8) of the construction along circuit longitudinal direction, the stress relief hole (8) between the roadbed (1) of meter and existing line (9)
Hole depth is the same as flexible rotary churning pile (5) stake bottom depth, spacing 3-4m.
5. construction method as described in claim 1, which is characterized in that adjacent two rows rigidity CFG between multiple rows of rigidity CFG (4)
The distance between stake (4) is equal, and distance is equal between often arranging adjacent two rigidity CFG (4) between rigidity CFG (4) side by side；It is more
The distance between adjacent two rows of flexible rotary churning piles (5) are equal between the flexible rotary churning pile (5) of row, often between the flexible rotary churning pile (5) of row side by side
Adjacent two flexible rotary churning piles (5) between distance it is equal.
6. construction method as claimed in claim 5, which is characterized in that between adjacent two rows rigidity CFG (4), adjacent two rows it is soft
Laterally aligned or laterally staggered arrangement between property rotary churning pile (5).
7. a kind of handle the road structure for closing on both wired soft soil foundations, which is characterized in that including being laid at the top of Soft Soil Layer (2)
Mattress layer (6) and be laid on above mattress layer (6), close on the roadbeds (1) of existing line (9), below the mattress layer (6) from
At safety margin (10) in toe region of the roadbed (1) far from existing line (9) side, along the longitudinally disposed multiple rows of rigidity of circuit
CFG (4), each rigidity CFG (4) of arranging continue to set 1-2 outside the slope foot of roadbed (1) outside, to separate existing line (9) direction
Existing line (9) side is closed in root rigidity CFG (4), mattress layer (6) lower section at safety margin (10) to roadbed (1)
Toe region in, along the longitudinally disposed multiple rows of flexible rotary churning pile (5) of circuit, each flexible rotary churning pile (5) of row is in roadbed (1) interior side slope
Foot is outer, continues to set 1-2 root flexibility rotary churning piles (5), the flexibility rotary churning pile (5) and rigidity CFG to existing line (9) direction
(4) stake bottom is both passed through in Soft Soil Layer (2) to hard stratum (3), and stake top is to Soft Soil Layer top surface.
8. road structure as claimed in claim 7, which is characterized in that it is described flexibility rotary churning pile (5) stake diameter be 0.6-0.7m, stake
Spacing is 2-3 times of stake diameter；Described CFG (4) stake diameters of rigidity are 0.5-0.6m, and stake spacing is 3-5 times of stake diameter.
9. road structure as claimed in claim 7, which is characterized in that the mattress layer (6) is from bottom to top successively by rubble pad
Layer (6.1), medium coarse sand bed course (6.2), direction earthwork grille (6.3), the second medium coarse sand bed course (6.4) and the second blotter
(6.5) it is laid with.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610208948.5A CN105696426B (en) | 2016-04-06 | 2016-04-06 | It is a kind of to handle the construction method and its road structure for closing on both wired soft soil foundations |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610208948.5A CN105696426B (en) | 2016-04-06 | 2016-04-06 | It is a kind of to handle the construction method and its road structure for closing on both wired soft soil foundations |
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| CN105696426A CN105696426A (en) | 2016-06-22 |
| CN105696426B true CN105696426B (en) | 2018-06-12 |
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| CN106638168A (en) * | 2017-01-17 | 2017-05-10 | 马鞍山钢铁股份有限公司 | Device for treating metallurgy railroad bed defects through reinforcing and grouting and construction method |
| CN106968139B (en) * | 2017-03-09 | 2018-08-24 | 中铁十九局集团有限公司 | The construction method of railway bed supporting in undercrossing tunnel jacking framed bridge jack-in process |
| CN107044076A (en) * | 2017-03-24 | 2017-08-15 | 铁道第三勘察设计院集团有限公司 | A kind of newly built railway rigid road base and its construction method for closing on existing high ferro |
| CN107130614A (en) * | 2017-05-31 | 2017-09-05 | 中铁二十局集团第六工程有限公司 | The anti-Landslide System of swelled ground high slope and construction method |
| CN108570888A (en) * | 2018-05-07 | 2018-09-25 | 中铁二院工程集团有限责任公司 | It is a kind of to weaken the length mini pile construction and construction method that expansive soil foundation swells |
| CN113718560B (en) * | 2021-09-30 | 2022-12-27 | 中铁二局集团有限公司 | Intelligent monitoring-based construction method for coordinative settlement control of adjacent existing line retaining wall type high-speed railway foundation |
| CN114320371A (en) * | 2022-01-05 | 2022-04-12 | 中铁二局第一工程有限公司 | Construction method for controlling deformation of operation track by isolated grouting |
| CN114808554A (en) * | 2022-05-07 | 2022-07-29 | 中铁二院贵阳勘察设计研究院有限责任公司 | Ballastless track foundation of high-speed railway and processing method |
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| CN201991012U (en) * | 2011-01-30 | 2011-09-28 | 中铁第四勘察设计院集团有限公司 | Composite pile foundation for treating railway soft soil foundation |
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| KR20110068450A (en) * | 2009-12-16 | 2011-06-22 | 한국철도공사 | Elastic pile for railroad-bed frostbite reduction and this construction technique |
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| CN201991012U (en) * | 2011-01-30 | 2011-09-28 | 中铁第四勘察设计院集团有限公司 | Composite pile foundation for treating railway soft soil foundation |
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