CN107012880A - A kind of pile pier structure of the empty rail of suspension type - Google Patents
A kind of pile pier structure of the empty rail of suspension type Download PDFInfo
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- CN107012880A CN107012880A CN201710103739.9A CN201710103739A CN107012880A CN 107012880 A CN107012880 A CN 107012880A CN 201710103739 A CN201710103739 A CN 201710103739A CN 107012880 A CN107012880 A CN 107012880A
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- 239000000725 suspension Substances 0.000 title claims abstract description 32
- 230000002787 reinforcement Effects 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims description 46
- 239000010959 steel Substances 0.000 claims description 46
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000010985 leather Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000010008 shearing Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000010485 coping Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
- E02D2200/1607—Shapes round, e.g. circle
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of pile pier structure of the empty rail of suspension type, is provided with reinforcement cage, and the peg equipped with laterally setting on the side wall of bridge pier bottom, Bored Pile Foundation between Bored Pile Foundation and bridge pier bottom and is also equipped with prestress wire.This kind of pile pier integral structure, its structural strength is high, and shearing resistance, resistance to plucking and flexural capacity are strong, with higher structural strength and wider array of applicability, while suitable for the building of centering type stress.
Description
Technical field
The present invention relates to pile foundation and the structure of bridge pier, more particularly to a kind of pile pier knot being used in the empty rail of suspension type
Structure.
Background technology
Suspension type sky rail is a kind of orbital fashion of overhead rail train, and it includes some inverted L shape bridge piers, and is installed on
The Steel Bridge of inverted L shape pier coping portion below the crossbeam, train is hung on below track, orbiting.Its pier coping portion is cantilever
Structure, train is located at below cantilever, is conducted oneself with dignity by bridge pier, train is conducted oneself with dignity, and train operation load, and wind load effect
Under, bridge pier needs to afford larger unbalance loading, and its bridge pier needs to have the ability for bearing unbalance loading with pile foundation integrated structure.
The integrated structure of existing building infrastructure, its pile foundation and bridge pier, mostly pile foundation elevates above the soil, and first pours ground
Bottom point, above ground portion reserved steel bar cage treats pier bottom insertion after-pouring above ground portion formation suspended deck structure.Such a pile pier structure is held
Press performance good, the need for being well positioned to meet vertical load building, but its resistance to plucking, bending resistance, anti-bias load poor performance, it is impossible to meet
The bearing requirements of the empty rail of above-mentioned suspension type.
The content of the invention
The present invention is intended to provide a kind of have good resistance to plucking and flexural capacity, the suspension type of unbalance loading ability can be born very well
The pile pier structure of empty rail, the need for adapting to the empty rail of suspension type.
The pile pier structure of the empty rail of suspension type of the present invention, including Bored Pile Foundation and L-shaped bridge pier, bridge pier includes transversal
Face is rectangle and the column being vertically arranged, and the crossbeam for extending at the top of column and laterally setting；The top of Bored Pile Foundation
Portion is above the ground level, and a boundary line that scoops for Bored Pile Foundation is less than ground certain distance, and the steel reinforcement cage of foundation pile is extended to by bottom
Top；The bottom of column is embedded in base drilling plinth stake, and the sidewall surfaces that column bottom is located at the part of subsurface spread all over horizontal stretch
The peg gone out, column bottom is fixed about outside peg reinforcement cage；The surrounding of the steel reinforcement cage of Bored Pile Foundation is disposed with many
Root prestress wire, the two ends of each prestress wire are strained and fixed at the top and bottom of steel reinforcement cage respectively.
The pile pier structure of the empty rail of suspension type of the present invention, scoops a boundary line and locates below ground level, and stake top is located at ground
On face, bridge pier bottom stretches into below ground in Bored Pile Foundation, and sets peg and reinforcement cage in bridge pier side wall,
After pouring, its pile foundation is by steel reinforcement cage top section, and bridge pier is combined closely by peg and reinforcement cage with pouring section, so that stake
Base forms the structure of a monoblock type with bridge pier, and its intensity connected has obtained significantly being lifted, and bridge pier is provided with well
Resistance to plucking and flexural capacity；And prestress wire is arranged on steel reinforcement cage, can be with stretch-draw prestressing force after pile pier is poured and finished
Steel strand wires, make it produce prestressing force.Because empty its bridge pier of rail of the suspension type is eccentric structure, its towards line side by
Pressure, the tension in dorsad line side；By setting the prestress wire of varying number in both sides, in steel bridge pier dorsad line side
Prestressing force is added, this makes pile pier structure can be good at realizing that stress is offset in pile pier junction, so as to further strengthen
The resistance to plucking and anti-bending strength of bridge pier.And a certain degree of prestressing force that prestress wire is provided, also enable whole pier stake system
Enough changes that load is adapted in certain limit, it is unloaded, fully loaded, and when there is wind load, the change of enough adaptive load, dimension
The stabilization of whole system is held, the stability of whole train operation is improved.
Brief description of the drawings
Fig. 1 is the structural representation of the pile pier structure of the empty rail of suspension type.
Fig. 2 is the partial enlarged drawing of the pile pier structure of the empty rail of suspension type shown in Fig. 1.
Fig. 3 is the bridge pier and the structural representation of peg of the pile pier structure of the empty rail of suspension type shown in Fig. 1.
Fig. 4-6 is the peg schematic layout pattern under three kinds of bridge pier sizes respectively.
Fig. 7-10 is the reinforcement cage schematic layout pattern under three kinds of bridge pier sizes respectively.
Figure 11 is the structural representation of the end fixation kit of the pile pier structure of the empty rail of suspension type shown in Fig. 1.
Figure 12 is the structural representation of the middle part fixation kit of the pile pier structure of the empty rail of suspension type shown in Fig. 1.
Figure 13 is the steel strand wires distributing position schematic diagram of the pile pier structure of the empty rail of suspension type shown in Fig. 1.
Figure 14 is the steel strand wires length schematic diagram of the pile pier structure of the empty rail of suspension type shown in Fig. 1.
Embodiment
A kind of pile pier structure of the empty rail of suspension type, including Bored Pile Foundation 1 and L-shaped bridge pier, it is square that bridge pier, which includes cross section,
Shape and the column 21 being vertically arranged, and the crossbeam 22 for extending at the top of column and laterally setting；The top of Bored Pile Foundation
It is above the ground level, and a boundary line that scoops for Bored Pile Foundation is less than ground certain distance, the steel reinforcement cage of foundation pile extends to top by bottom
End；The bottom of column is embedded in base drilling plinth stake, and sidewall surfaces of the column bottom positioned at the part of subsurface, which spread all over, to be crossed out
Peg 4, column bottom is fixed about outside peg reinforcement cage 3；The surrounding of the steel reinforcement cage of Bored Pile Foundation is disposed with many
Root prestress wire 5, the two ends of each prestress wire are strained and fixed at the top and bottom of steel reinforcement cage respectively.Bored Pile Foundation
1 periphery is settable steel pile casting 10, and the top protrusion of steel pile casting is above the ground level.
As shown in figure 1, horizontal line M is above-ground route in figure, horizontal line N is scoops a boundary line, and reinforcement cage is arranged at this two
Between horizontal line, be both installed in foundation pile, but with bridge pier bottom connection function, so as to improve the bond strength of pile pier, improve
Resistance to plucking, the flexural capacity of bridge pier.
The pile pier structure of the empty rail of described suspension type, the arrangement of peg is high according to the different of pier column section, bridge pier pier
Difference can take different arrangements, for example：Pier column 21 is embedded in subterranean depth for 1.2m；If pier column section chi
Very little is 900x900mm, and a height of 9~17m of bridge pier pier, the side of column bottom four is respectively uniformly provided with the row peg 4 of nine row eight, top row peg away from
From the ground, distance of the bottom row peg apart from pier bottom is respectively 320mm and 80mm, and left and right two row peg is apart from column side
100mm；Or the row peg 4 of nine row six is respectively uniformly provided with the side of column bottom four, top row peg is apart from ground, bottom row's peg distance
The distance at pier bottom is respectively 320mm and 80mm, and left and right two row peg is 125mm apart from column side.Such as (a), (b) in Fig. 4
It is shown.
As shown in (a) in Fig. 5, (b), if pier column sectional dimension is 800x900mm, a height of 8.5~10m of bridge pier pier,
The side of column bottom four is respectively uniformly provided with the row peg 4 of seven row three, and distance of the top row peg apart from ground, bottom row's peg apart from pier bottom is divided
Not Wei 340mm and 80mm, left and right two row peg is 100mm apart from column side；Or uniformly set the side of column bottom four is each
There is a row peg 4 of seven row six, distance of the top row peg apart from ground, bottom row's peg apart from pier bottom is respectively 340mm and 80mm, left,
Right two row pegs are 75mm apart from column side.
As shown in (a) in Fig. 6, (b), if pier column sectional dimension is 800x900mm, a height of 11~17m of bridge pier pier, stand
The side of column bottom four is respectively provided with the row peg 4 of nine row four, and each row is uniformly distributed, and top row peg arranges peg apart from pier apart from ground, bottom
The distance at bottom is respectively 340mm and 80mm, and the row peg of outside two is 100mm, the row peg distance of inner side two apart from column side
Outside peg is 200mm；Or the row peg 4 of nine row six is respectively uniformly provided with the side of column bottom four, top row peg is apart from ground, bottom
It is respectively 340mm and 80mm to arrange distance of the peg apart from pier bottom, and left and right two row peg is 75mm apart from column side.
Above-mentioned various sizes arrangement, can depending on actual conditions, with meet different geologic structures, different size column or
The use of different model train needs.
The pile pier structure of the empty rail of described suspension type, difference according to pier column section of the arrangement of pile pier junction, bridge
The difference of the high difference of pier pier and peg arrangement can take the arrangement of different reinforcement cages.Its lateral tie removes three layers of top
Stirrup arranges outer using the screw-thread steels of φ 16, by 80mm spacing, and remaining lateral tie is using the screw-thread steels of φ 12, by 100mm spacing
Arrangement；Lengthways main steel bar arrangement can use following four：If pier column sectional dimension is 900x900mm, a height of 9m of pier stake
Pier junction, lengthways main steel bar is arranged by Fig. 6 modes.If pier column sectional dimension is 900x900mm, a height of 17m of pier pile pier
Junction, lengthways main steel bar is arranged by Fig. 7 modes.If pier column sectional dimension is 800x900mm, a height of 8.5 ~ 10m of pier stake
Pier junction, lengthways main steel bar is arranged by Fig. 8 modes.If pier column sectional dimension is 800x900mm, a height of 11 ~ 17m of pier stake
Pier junction, lengthways main steel bar is arranged by Fig. 9 modes.
The pile pier structure of the empty rail of described suspension type, prestress wire is slow-adhesion prestress steel strand, including is set
In the anchor plate 6 of the upper/lower terminal of steel reinforcement cage 11 of Bored Pile Foundation 1, and vertically, compartment of terrain is installed in the middle part of steel reinforcement cage
Several U-shaped buckles 7；Cable-through hole is provided with the middle part of anchor plate, the aperture of cable-through hole is outer slightly larger than prestress wire 5
Footpath, is fixedly installed on steel reinforcement cage to the both ends horizontal of U-shaped buckle, and its internal diameter size and the prestressing force after parcel plastics leather sheath
The external diameter of steel strand wires is adapted, in the endoporus of the center of the cable-through hole of the anchor plate of steel reinforcement cage upper/lower terminal and all U-shaped buckles
The heart is on same vertical curve；The middle part of prestress wire is also cross all U-shaped buckles, the two ends of prestress wire
It is fixed on through cable-through hole and by anchorage on anchor plate.This kind of prestress wire is by bare wire, slow setting adhesive and outsourcing
Plastic skin set composition, dilatation is freely in the construction stage, not with around, the generation of slow setting adhesive is bonded for it, and is constructing
In predetermined period after, presstressed reinforcing steel produces cementation by the slow setting adhesive of solidification with surrounding concrete.Slow cohesion
The two ends of prestress wire are anchored at by anchorage on the anchor plate of steel reinforcement cage upper/lower terminal, and middle part then passes through U-shaped buckle
Carry out spacing, and prestress wire is held in the state of vertical direction by anchor plate and U-shaped buckle, the direction with its by
Force direction is consistent, both can to the full extent using the effect of prestress wire, can avoid again prestress wire because
The effect of eccentric force and worn plastic leather sheath, ultimately result in prestress wire abrasion or even are broken；Meanwhile, the mistake on anchor plate
String holes is slightly larger than the external diameter of prestress wire, and the internal diameter of U-shaped buckle is then adapted with the external diameter of prestress wire, thus protected
Demonstrate,prove the smoothness of prestress wire work；In addition, because the outer layer covers of prestress wire have plastics leather sheath, it is pre- by ensureing
After the linearity requirement of prestress steel strand, enough spaces can be provided to the tensioning of prestress wire, so as to ensure pre- answer
The tension performance of power steel strand wires, smoothly can provide prestressing force for pile foundation.
As shown in Figure 11,12, anchor plate 6 is equipped with spiral bar 61, prestress wire towards the side at the middle part of steel reinforcement cage 11
End is through spiral bar and cable-through hole and is fixed on anchor plate.In stretch-draw prestressing force steel strand wires, when prestressing force is not transmitted
Into total, the prestressing force born below anchor plate is larger, and in order to preferably protect steel strand wires, spiral bar is set in this place
The intensity of the position concrete can be increased, prevent from causing the position concrete to burst apart because local pressure is too big, so as to increase
The stability of whole prestress system.Equipped with the reinforcement for improving structural strength on steel reinforcement cage 11, the two ends of U-shaped buckle 7 are fixed
It is installed on reinforcement, so as to improve the installation strength of U-shaped buckle, and improves the safety in utilization of prestress wire.Anchor pad
The internal diameter of the cable-through hole of plate 6 is more than the diameter 0-2mm of prestress wire 5；Install the spaced 2m of several U-shaped buckles 7
In on steel reinforcement cage 11.On the one hand structure under the size can ensure the use requirement of prestress wire, again can be preferably
Prestress wire is protected.
As shown in Figure 13,14, the cutting length of prestress wire 5 is equal to active length and adds 700mm；Active length is
Presstressed reinforcing steel length between the anchorage of two ends.The cross section of Bored Pile Foundation 1 is the both sides difference in circle, a certain diametric(al)
The prestress wire 5 that quantity is not waited is installed；In the greater number of prestress wire of side setting of dorsad empty rail, and
Side close to sky rail sets lesser amt, utilizes the setting of varying number prestress wire so that between two sides of pier stake
Resistance to plucking it is different with fracture resistance, meet centering type stress building use needs while, reduce needed for prestress steel
Twisted wire quantity.And be preferably to improve its performance and reduce waste by Practical experiments, two can be set on Bored Pile Foundation 1
The orthogonal diameter of bar, wherein one end of a diameter is equipped with prestress wire 5, prestress wire place radius
Both sides further respectively have five prestress wires and a prestress wire, five prestress wires of homonymy and the center of circle
Between line and the angle between the diameter be respectively 21 °, 36 °, 51 °, 66 °, 81 °, opposite side prestress wire and the diameter
Between angle be 51 °, while separately having seven prestress wires relative with another diameter with above-mentioned seven prestress wires
It is installed in Bored Pile Foundation with claiming.Above-mentioned 14 prestress steel twist line positions are as shown in two groups of N1~N7 in Fig. 4, in addition, institute
The one end for having prestress wire is mounted on the top of Bored Pile Foundation, and diametrically two are between prestress wire and diameter
Angle is that 51 ° of four prestress wires have same length and are longer than the length of remaining prestress wire.This can be
In the case of meeting needs, the consumption of prestress wire needed for further reducing.
Claims (10)
1. a kind of pile pier structure of the empty rail of suspension type, including Bored Pile Foundation（1）With L-shaped bridge pier, it is characterised in that：Bridge pier includes
Cross section is rectangle and the column being vertically arranged（21）, and the crossbeam for extending at the top of column and laterally setting（22）；Bore
It is above the ground level at the top of the pile foundation of hole, and a boundary line that scoops for Bored Pile Foundation is less than ground certain distance, the steel reinforcement cage of foundation pile
Top is extended to by bottom；The bottom of column is embedded in base drilling plinth stake, and column bottom is located at the side wall table of the part of subsurface
Face spreads all over the peg crossed out（4）, column bottom is fixed about outside peg reinforcement cage（3）；The steel of Bored Pile Foundation
The surrounding of muscle cage is disposed with many prestress wires（5）, the two ends of each prestress wire are strained and fixed in steel reinforcement cage respectively
Top and bottom.
2. the pile pier structure of the empty rail of suspension type according to claim 1, it is characterised in that：Pier column（22）It is embedded in underground
Depth is 1.2m.
3. the pile pier structure of the empty rail of suspension type according to claim 2, it is characterised in that：If pier column sectional dimension is
900x900mm, a height of 9 ~ 17m of bridge pier pier, the side of column bottom four are respectively uniformly provided with the row peg of nine row eight（4）, top row, bottom row's peg
It is respectively 320mm and 80mm apart from ground, left and right two row peg is 100mm apart from column side；Or in column bottom four
Side is respectively uniformly provided with the row peg of nine row six（4）, top row, bottom row's peg are respectively 320mm and 80mm, left and right two row apart from ground
Peg is 125mm apart from column side.
4. the pile pier structure of the empty rail of suspension type according to claim 2, it is characterised in that：If pier column sectional dimension is
800x900mm, a height of 8.5 ~ 10m of bridge pier pier, the side of column bottom four are respectively uniformly provided with the row peg of seven row three（4）, top row, bottom row's bolt
Pitch of nails is respectively from the ground 340mm and 80mm, and left and right two row peg is 100mm apart from column side；Or in column bottom
Four sides are respectively uniformly provided with the row peg of seven row six（4）, it is respectively 340mm and 80mm, left and right two apart from ground that top row, bottom, which arrange peg,
Row peg is 75mm apart from column side.
5. the pile pier structure of the empty rail of suspension type according to claim 2, it is characterised in that：If pier column sectional dimension is
800x900mm, a height of 11 ~ 17m of bridge pier pier, the side of column bottom four are respectively provided with the row peg of nine row four（4）, respectively arrange and be uniformly distributed, and
It is respectively 340mm and 80mm apart from ground that top row, bottom, which arrange peg, and the row peg of outside two is 100mm, inner side apart from column side
Two row pegs are 200mm apart from outside peg；Or the row peg of nine row six is respectively uniformly provided with the side of column bottom four（4）, top row,
It is respectively 340mm and 80mm apart from ground that peg is arranged at bottom, and left and right two row peg is 75mm apart from column side.
6. the pile pier structure of the empty rail of suspension type according to claim 1, it is characterised in that：Prestress wire is slow cohesion
Prestress wire, including it is arranged at Bored Pile Foundation（1）Steel reinforcement cage（11）The anchor plate of upper/lower terminal（6）, and along vertical
Direction compartment of terrain is installed on several U-shaped buckles in the middle part of steel reinforcement cage（7）；Cable-through hole is provided with the middle part of anchor plate, cable-through hole
Aperture is slightly larger than prestress wire（5）External diameter, be fixedly installed on steel reinforcement cage to the both ends horizontal of U-shaped buckle, and in it
Footpath size and the external diameter of the prestress wire after parcel plastics leather sheath are adapted, the mistake of the anchor plate of steel reinforcement cage upper/lower terminal
The center of string holes and the endoporus center of all U-shaped buckles are on same vertical curve；Wear simultaneously at the middle part of prestress wire
All U-shaped buckles are crossed, the two ends of prestress wire are fixed on anchor plate on through cable-through hole and by anchorage.
7. the pile pier structure of the empty rail of suspension type according to claim 6, it is characterised in that：Anchor plate（6）Towards steel reinforcement cage
（11）The side at middle part is equipped with spiral bar（61）, the end of prestress wire passes through spiral bar and cable-through hole and is fixed on anchor pad
On plate.
8. the pile pier structure of the empty rail of suspension type according to claim 6 or 7, it is characterised in that：Prestress wire（5）'s
Cutting length is equal to active length and adds 700mm.
9. the pile pier structure of the empty rail of suspension type according to claim 6 or 7, it is characterised in that：Bored Pile Foundation（1）Horizontal stroke
Section is that the both sides in circle, a certain diametric(al) are separately installed with the prestress wire that quantity is not waited（5）.
10. the pile pier structure of the empty rail of suspension type according to claim 9, it is characterised in that：Bored Pile Foundation（1）On set two
The orthogonal diameter of bar, wherein one end of a diameter is equipped with prestress wire（5）, radius where the prestress wire
Both sides further respectively have five prestress wires and a prestress wire, five prestress wires and circle of homonymy
The angle between line and the diameter in the heart is respectively 21 °, 36 °, 51 °, 66 °, 81 °, and opposite side prestress wire is straight with this
Angle between footpath is 51 °, while separately having seven prestress wires with above-mentioned seven prestress wires with another diameter phase
Symmetrically it is installed in Bored Pile Foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103739.9A CN107012880A (en) | 2017-02-24 | 2017-02-24 | A kind of pile pier structure of the empty rail of suspension type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103739.9A CN107012880A (en) | 2017-02-24 | 2017-02-24 | A kind of pile pier structure of the empty rail of suspension type |
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| CN107012880A true CN107012880A (en) | 2017-08-04 |
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| CN201710103739.9A Pending CN107012880A (en) | 2017-02-24 | 2017-02-24 | A kind of pile pier structure of the empty rail of suspension type |
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