CN206144578U - Last soft hard ground layer tunnel supporting structure down - Google Patents
Last soft hard ground layer tunnel supporting structure down Download PDFInfo
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- CN206144578U CN206144578U CN201621164136.7U CN201621164136U CN206144578U CN 206144578 U CN206144578 U CN 206144578U CN 201621164136 U CN201621164136 U CN 201621164136U CN 206144578 U CN206144578 U CN 206144578U
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Abstract
The utility model relates to a tunnel construction technology field specifically indicates a last soft hard ground layer tunnel supporting structure down. Including pipe -roof structure and bearing structure, the pipe -roof structure includes many steel pipes, and many steel pipes form the domes that cover in the tunnel top, two blocks of steel sheets between the adjacent steel pipe are along the radial parallel interval arrangement in tunnel, and the space between two blocks of steel sheets forms arched intercommunication cavity with steel pipe inner space intercommunication, steel sheet with the steel pipe in the mounting groove of steel pipe lateral wall through seting up, the concrete has been pour in the intercommunication cavity, last end bearing in two steel pipes bottom of bearing structure. The utility model discloses an arched pipe -roof structure has strengthened soft soil layer's intensity, and the problem of having avoided appearing easily collapsing at soft soil layer tunnel construction takes place, has strengthened the construction flexibility through preliminary bracing and secondary lining structure, has reduced the influence to the earth's surface, and construction security height has improved the efficiency of construction, has very big spreading value.
Description
Technical field
This utility model is related to tunneling technology field, in particular to a kind of upper-soft lower-hard ground tunnel support structure.
Background technology
Constructing tunnel can typically take the engineering methods such as Mining Method, shield (jacking) method, cut and cover method to construct.Wherein Mining Method is general
It is applied to geological conditions preferably, the preferable tunnel of country rock self-stability.It is weak when upper-soft lower-hard ground need to adopt mining method construction
Stratum is difficult to from steady, the easy Collapse Deformation under upper load effect.Existing upper-soft lower-hard ground Tunneling by mining method construction needs
The a range of soft stratum of tunnel perimeter is reinforced, is then applied under the protection on the stratum and advance support that reinforce
Work.Such constructing tunnel under generic condition can be met using prior art, but in complex condition, however it remains ask below
Topic：
1) in the case of conditional, generally preferable consolidation effect can be obtained by the way of reinforcing is faced down from ground.
But when existing buildings or structures are closely worn in tunnel down, then implement surrounding rock consolidation from ground without condition, can only be using in hole
Reinforce.And strengthening construction limited space in hole, being limited by prior art, stratum consolidation effect is general, and affects other works in hole
Sequence is constructed.From the point of view of existing engineering experience, the Tunneling by mining method high for settlement request, when ground does not possess reinforcing condition
When, consolidation effect is generally difficult to ensure.
2) it is by surface settlement control in allowed band, advance support need to be continued to increase with the increase of tunnel span
With the rigidity of preliminary bracing, but pipe canopy widely used in prior art, per-fore pouring liquid with small pipe, steel arch-shelf and gunite concrete
The space increased Deng conventional supporting measure rigidity is relatively limited.If big in Mining Method only with existing conventional supporting measure
During span tunnel excavation, on pipe canopy and its preliminary bracing, its rigidity is relatively small, what formation function caused for stratum load action
Deformation is larger, it is difficult to meet the requirement of settlement Control.
3) during longspan tunnel stratum consolidation, because stratum soil mass property has a larger difference, the comprcssive strength of reinforcing body,
Anti-permeability performance can produce certain discreteness, and the tunnel high to requirement of settlement control, its safely controllable property is poor, exist in construction compared with
Excessive risk.
Utility model content
The purpose of this utility model seeks to the supporting construction presence of the prior art for solving to be mentioned in above-mentioned background technology
Complex structure, constructional difficulties, stability is poor, be difficult to meet requirement of settlement control, the problem of security control difference, there is provided it is a kind of
Upper-soft lower-hard ground tunnel support structure.
The technical solution of the utility model is：A kind of upper-soft lower-hard ground tunnel support structure, it is characterised in that：Including position
In the pipe curtain structure and the supporting construction below tunnel clearance on tunnel clearance top；Described pipe curtain structure includes many edges
Tunnel is axially arranged in the steel pipe in the soft layer of tunnel top, and circumferencial direction arranged for interval of many steel pipes along tunnel is formed to be covered
The domes in tunnel upper are built, two pieces of Interal fixations along tunnel circumferential directions connect between adjacent steel pipe；It is described
Adjacent steel pipe between two blocks of steel plates along tunnel radial parallel arranged for interval, the space between two blocks of steel plates is by being opened in
The mounting groove of steel pipe side wall is connected with steel duct space, and steel plate forms the connection cavity of arch with steel pipe；Described connection is empty
Intracavity has poured armored concrete；The upper end of described supporting construction is connected on two steel pipes of pipe curtain structure both sides bottom
The closing supporting construction being looped around on the outside of tunnel is formed with pipe curtain structure.
Further described supporting construction include being embedded in hard soil layer at the beginning of the sidepiece of tunnel clearance both sides
Phase supporting and the bottom preliminary bracing below tunnel clearance, the lower end of sidepiece preliminary bracing is fixed on bottom preliminary bracing
Two ends form the U-shaped supporting construction being undertaken in below tunnel, the upper end of sidepiece preliminary bracing and the both sides bottom of pipe curtain structure
Fastener for connection, sidepiece preliminary bracing, bottom preliminary bracing and steel pipe and steel plate form the ring-shaped cavity supporting construction of sealing.
Further described supporting construction also includes secondary lining；Described secondary lining is propped up to pour in the sidepiece initial stage
U-shaped reinforced concrete structure on the inside of shield and bottom preliminary bracing, the both sides upper end of secondary lining and pipe curtain structure both sides most under
Two steel pipes at end are fixedly connected.
Further described steel plate is continuously arranged along tunnel axial direction, set between two between adjacent steel pipe block steel plate
It is equipped with column；Described column is the member structure that the radial direction along tunnel is arranged, the two ends of column are separately fixed at adjacent
On two blocks of steel plates.
The many steel pipe reinforcing bars along tunnel axially spaced-apart arrangement, steel pipe reinforcing bar edge are equipped with further described steel pipe
All of fastener for connection is overall structure by the circumferencial direction in tunnel, and steel pipe reinforcing bar is by concreting in connection cavity.
In further described secondary lining many have been poured along the spaced apart lining cutting reinforcing bar of tunnel axial direction；Institute
The both sides upper end of the lining cutting reinforcing bar stated is welded to connect to be formed and is centered around outside tunnel circumference with the both sides lower end of corresponding steel pipe reinforcing bar
The loop configuration of side.
Support bar is provided between further described pipe curtain structure and bottom preliminary bracing；Described support bar it is upper
End is fixed on the side wall of steel pipe, and lower end is supported on the hard soil layer of tunnel bottom.
A kind of construction method of upper-soft lower-hard ground tunnel support structure, it is characterised in that：Described construction method includes
Following steps：
1), it is spaced applies steel in order along tunnel axial direction inserting piling steel pipe in the soft layer above tunnel clearance
Pipe is until form the domes being covered in above tunnel clearance；
2), mounting groove is opened up on the wall of steel pipe side from steel duct, two blocks of steel plates is inserted in mounting groove, by the two of steel plate
End is respectively welded on adjacent two piece steel pipe, and from steel duct the soil body between steel plate is excavated, and is applied between two blocks of steel plates
Inner support；
3), piecemeal tunneling, along the hard soil layer construction supporting structure of tunnel sidepiece and bottom, by pipe curtain structure both sides
The steel pipe of bottom is fixed on the upper end of supporting construction；
4) tunnel for excavating subsequent cycle section, is continued, until all section tunnels complete construction.
In further described step 3, the method along the hard soil layer construction supporting structure of tunnel sidepiece and bottom is：
Piecemeal tunneling, construct sidepiece preliminary bracing and bottom preliminary bracing and connects as one both successively, by the sidepiece initial stage
The upper end of supporting is connected to the side wall of two steel pipes of pipe curtain structure both sides bottom, and the tunnel excavation for treating a circulation section is completed
Afterwards, lining cutting reinforcing bar is set up along sidepiece preliminary bracing and bottom preliminary bracing, lining cutting reinforcing bar is connected with steel pipe reinforcement welding, in side
The inner side pouring reinforcement concrete of portion's preliminary bracing and bottom preliminary bracing is allowed to form the secondary lining of support tube curtain structure.
Further the construction method of piecemeal tunneling is：First excavation section of first tunneling both sides, along tunnel
The hard soil layer construction sidepiece preliminary bracing of gauge both sides, by the steelframe upper end of sidepiece preliminary bracing pipe curtain structure both sides are welded on
On the steel pipe of bottom, support bar is installed between pipe curtain structure and the hard soil layer of tunnel clearance bottom, then tunneling
The second middle excavation section, along the hard soil layer construction bottom preliminary bracing of tunnel bottom, by the lower end of sidepiece preliminary bracing
It is connected in the preliminary bracing of bottom.
Advantage of the present utility model has：1st, tunnel advanced support structure of the present utility model, compares existing advance support
With bigger rigidity and globality, while less to the deformation effect on stratum；
2nd, this utility model by pipe curtain structure by combining the composite lining composition that preliminary bracing structure, secondary lining are formed
The closing supporting structure system in whole tunnel, has adaptability to the stratum of upper-soft lower-hard ground；
3rd, this utility model upper tube curtain structure is constructed using shield method or jacking, bottom is opened using Mining Method
The construction method of digging, compares existing construction method and has, construct flexible, speed of application little to earth's surface deformation effect special faster
Point, has adaptability to the longspan tunnel of upper-soft lower-hard ground；
4th, this utility model tunnel clearance top carries out supporting using the pipe curtain structure of arch, go for tunnel with both
Have apart from the situation of very little between the buildings or structures basis of underground, and construct on existing structure impact very little.
This utility model enhances the intensity of advance support in soft layer by the pipe curtain structure of arch, it is to avoid soft
The problem that collapsing easily occurs in weak soil layer construction tunnel occurs, and enhances construction by preliminary bracing and secondary liner structure flexible
Property, the impact to earth's surface is reduced, working security is high, efficiency of construction is improve, with great promotional value.
Description of the drawings
Fig. 1：Structural representation of the present utility model；
Fig. 2：Pipe curtain structure of the present utility model and supporting construction distribution relation structural representation；
Fig. 3：Pipe curtain structure of the present utility model and secondary lining attachment structure schematic diagram；
Wherein：1-steel pipe；2-steel plate；The preliminary bracing of 3-sidepiece；The preliminary bracing of 4-bottom；5-column；6-steel pipe
Reinforcing bar；7-connection cavity；8-support bar；9-mounting groove；10-lining cutting reinforcing bar；11-secondary lining；12-the first excavation area
Section；13-the second excavates section.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in further detail with specific embodiment.
Such as Fig. 1～3, a kind of upper-soft lower-hard ground tunnel support structure, the supporting construction of the present embodiment includes two parts, one
Be be located at tunnel clearance above the pipe curtain structure in soft layer, two be located at tunnel below in hard soil layer
Supporting construction, pipe curtain structure is used to strengthen the intensity of advance support in soft layer, it is to avoid occur during constructing tunnel
The problem for collapsing, supporting construction is fixedly connected to form the cavity body structure of annular with pipe curtain structure, is looped around the outside in tunnel, is used for
Support tunnel excavation construction.
As shown in Fig. 1～2, pipe curtain structure includes many steel pipes being axially arranged in along tunnel in the soft layer of tunnel top
1, the steel pipe 1 of the present embodiment is constructed by shield method or jacking, and circumferencial direction of many steel pipes 1 along tunnel is spaced cloth
Put to form the domes for being covered in tunnel upper, be that, close to semicircular structure, domes are stable as shown in Fig. 1～2
Property it is good, Stress Transfer and dissipate preferable, with good stable support function.The present embodiment arranges steel between adjacent steel pipe 1
Plate 2, overall semicircular structure is connected as by steel plate 2 by all of steel pipe 1.
The multi-disc steel plate 2 being provided between adjacent steel pipe 1 more than at least two panels, radial direction of the multi-disc steel plate 2 along tunnel
Arranged for interval, the two ends of steel plate 2 are respectively welded on the side wall of adjacent two steel pipe 1.Axial direction of the single steel plate 2 along tunnel
Continuously it is arranged between two adjacent steel pipes 1.
Be provided with two panels steel plate 2 between the adjacent steel pipe 1 of the present embodiment, every steel plate 2 along tunnel circumferential directions,
Radial direction arranged for interval of the two panels steel plate 2 along tunnel.Column 5 is provided between adjacent steel plate 2, column 5 is along tunnel
The member structure of radial direction arrangement, the two ends of column 5 are separately fixed on adjacent two blocks of steel plates 2.Column 5 improves steel plate 2
Between rigidity, it is to avoid occur the problem of the deformation of steel plate 2 in the pressure by soft layer.
Installing steel plate 2 is realized by the mounting groove 9 on steel pipe 1, from the inside of steel pipe 1 on the side wall of steel pipe 1
Mounting groove 9 is opened up, steel plate 2 is installed by mounting groove 9, steel plate 2 is welded on the side wall of steel pipe 1, the sky between two blocks of steel plates 2
Between connected with the inner space of steel pipe 1 by mounting groove 9, formed along tunnel circumferential directions the arch in soft layer
Shape connects cavity 7, as shown in Figures 1 to 3.
Steel pipe reinforcing bar 6 is equipped with connection cavity 7, steel pipe reinforcing bar 6 is arch steel, circumference of the steel pipe reinforcing bar 6 along tunnel
Direction insertion steel pipe 1, by all of steel pipe 1 overall structure is connected as, and steel pipe reinforcing bar 6 is arranged in adjacent steel pipe 1 by mounting groove 9
Between two panels steel plate 2 between, while to concrete perfusion in connection cavity 7, the inside of concrete gravity flow actual arrival steel pipe 1 and steel plate
Between 2, reinforced concrete structure is formed with steel pipe reinforcing bar 6, concrete connects steel pipe 1, steel plate 2, column 5 and steel pipe reinforcing bar 6
For overall structure, whole pipe curtain structure forms the armored concrete shrouded in tunnel upper and protects cover structure.
As shown in Fig. 1～2, supporting construction includes the sidepiece initial stage positioned at tunnel clearance both sides being embedded in hard soil layer
Supporting 3 and the bottom preliminary bracing 4 below tunnel clearance, what supporting construction was mainly installed after excavation is used for
Support tube curtain structure, wherein, the lower end of sidepiece preliminary bracing 3 is fixed on the two ends of bottom preliminary bracing 4 and is formed and is undertaken in tunnel
The U-shaped supporting construction of lower section, the upper end of sidepiece preliminary bracing 3 is connected with the steel pipe 1 of the both sides bottom of pipe curtain structure, such as Fig. 3
It is shown, the ring-shaped cavity supporting construction of sidepiece preliminary bracing 3, bottom preliminary bracing 4 and steel pipe 1 and the formation sealing of steel plate 2.Side
Portion's preliminary bracing 3 and bottom preliminary bracing 4 are steel plate structure, play the purpose of stable support tube curtain structure.
Tunnel, due to the deadweight of pipe curtain structure, in the case where lower section does not have any support tunnel is carried out in digging process
Excavate in road, it is possible to the problem that pipe curtain structure collapses occur, therefore during tunneling, need in pipe curtain structure and tunnel
Support is set between road bottom, and the support of the present embodiment is support bar 8, and as shown in Fig. 1～2, the upper end of support bar 8 is fixed on steel
Pipe 1 it is upper, lower end is supported on the hard soil layer of tunnel bottom, by the support of support bar 8, can be avoided in tunnel excavation mistake
Occurs the problem that pipe curtain structure collapses in journey.
After having installed sidepiece preliminary bracing 3 and bottom preliminary bracing 4, the installation of secondary lining 11 can be carried out, two
Secondary lining cutting 11 is after the completion of section tunnelling, in the secondary supporting construction that tunnel bottom and sidepiece are installed, this enforcement
The secondary lining 11 of example includes lining cutting reinforcing bar 10, and lining cutting reinforcing bar 10 is the semicircle reinforcing bar along tunnel circumferential directions, lining cutting
The two ends of reinforcing bar 10 are welded to connect respectively with the two ends of corresponding steel pipe reinforcing bar 6, by lining cutting reinforcing bar 10 and the company of steel pipe reinforcing bar 6
Connect, effectively pipe curtain structure and supporting construction can be connected as into entirety.Lining cutting reinforcing bar 10 is relied on for skeleton casting concrete, shape
Into secondary lining 11, secondary lining 11 is to be fitted in U-shape structure in sidepiece preliminary bracing 3 and bottom preliminary bracing 4, secondary lining
The upper end for building 11 is fixed on the steel pipe 1 of pipe curtain structure both sides bottom, in fact, secondary lining 11 and pipe curtain structure are connected as
Integrally, so whole supporting construction is formed a complete closed housing structure, and the pipe curtain structure on top bears weak soil
The pressure of layer, bottom bracing structure is by these pressure dissipations to hard soil layer, it is ensured that run in construction and later stage in tunnel
Stability.
The specifically construction method of the present embodiment is comprised the following steps：1st, along tunnel in the soft layer above tunnel clearance
Road axial direction inserting piling steel pipe 1, using shield method or jacking constructing tunnel is carried out, and is first constructed nearest apart from hard soil layer
Steel pipe 1, then relies on the steel pipe 1 that construction is completed to carry out the construction of adjacent steel pipe 1, until all of steel pipe 1 is formed is centered around tunnel
Domes above road gauge, many steel pipes 1 along tunnel circumferencial direction arranged for interval successively,
2nd, mounting groove 9 is opened up on the side wall of steel pipe 1 from inside steel pipe 1, two blocks of steel plates 2 is inserted in mounting groove 9, by steel plate
2 two ends are respectively welded on adjacent two piece steel pipe 1, the soil body between the inner excavation steel plate 2 of steel pipe 1, in two blocks of steel plates 2
Between weld column 5, make column 5 along the radial direction supporting steel plate 2 in tunnel,
3rd, steel pipe reinforcing bar 6 is set up in steel pipe 1, to casting concrete between the inside of steel pipe 1 and steel plate 2, it is ensured that concrete
Steel pipe 1 can be flowed into connect in cavity 7 with what steel plate 2 was formed,
Tunnel excavation is divided into three parts by the 4th, piecemeal tunneling, the present embodiment, as shown in figure 1, for the of tunnel both sides
One the second excavation section 13 for excavating section 12 and centre, during During Initial Stage Construction supporting, the first excavation area of first tunneling both sides
Section 12, along the hard soil layer construction sidepiece preliminary bracing 3 of tunnel clearance both sides, by the upper end of sidepiece preliminary bracing 3 pipe is connected to
On the steel pipe 1 of curtain structure both sides bottom, support bar 8 is installed between pipe curtain structure and the hard soil layer of tunnel clearance bottom,
Then second in the middle of tunneling excavates section 13, and the hard soil layer along tunnel bottom arranges bottom preliminary bracing 4, by sidepiece
The lower end of preliminary bracing 3 is connected in bottom preliminary bracing 4,
5th, after the completion for the treatment of the tunnel excavation of a circulation section, the support bar 8 in the circulation section is removed, carries out the race way
Second Lining Construction in section, first sets up lining cutting reinforcing bar 10, by lining cutting reinforcing bar along sidepiece preliminary bracing 3 and bottom preliminary bracing 4
10 are welded to connect with steel pipe reinforcing bar 6, are allowed to be formed in the inner side casting concrete of sidepiece preliminary bracing 3 and bottom preliminary bracing 4
The secondary lining 11 of support tube curtain structure, it is ensured that secondary lining 11 is stably connected with the armored concrete in pipe curtain structure,
6th, treat after the completion of concrete curing, carry out the constructing tunnel of subsequent cycle section, successively alternately, until all
Section tunnel completes construction.
Ultimate principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Simply illustrate principle of the present utility model, this utility model can also on the premise of without departing from this utility model spirit and scope
There are various changes and modifications, these changes and improvements are both fallen within the range of claimed this utility model.This utility model will
Protection domain is asked to be defined by appending claims and its equivalent.
Claims (7)
1. a kind of upper-soft lower-hard ground tunnel support structure, it is characterised in that：Including the pipe curtain structure positioned at tunnel clearance top
With the supporting construction below tunnel clearance；It is soft that described pipe curtain structure is axially arranged in tunnel top including many along tunnel
Steel pipe (1) in weak soil layer, circumferencial direction arranged for interval of many steel pipes (1) along tunnel forms the arch for being covered in tunnel upper
Structure, two blocks of steel plates (2) along tunnel circumferential directions are fixedly connected between adjacent steel pipe (1)；Described adjacent steel pipe (1)
Between two pieces of steel plates (2) along tunnel radial parallel arranged for interval, the space between two pieces of steel plates (2) is by being opened in steel pipe
(1) mounting groove (9) of side wall is connected with steel pipe (1) inner space, and steel plate (2) forms the connection cavity of arch with steel pipe (1)
(7)；Armored concrete has been poured in described connection cavity (7)；The upper end of described supporting construction is connected to pipe curtain structure two
Formed with pipe curtain structure on two steel pipes (1) of side bottom and be looped around closing supporting construction on the outside of tunnel.
2. a kind of upper-soft lower-hard ground tunnel support structure as claimed in claim 1, it is characterised in that：Described supporting construction
Including be embedded in hard soil layer positioned at the sidepiece preliminary bracing (3) of tunnel clearance both sides and below tunnel clearance under
Portion's preliminary bracing (4), the lower end of sidepiece preliminary bracing (3) is fixed on the two ends of bottom preliminary bracing (4) and is formed and is undertaken in tunnel
The U-shaped supporting construction of lower section, the upper end of sidepiece preliminary bracing (3) is connected with the steel pipe (1) of the both sides bottom of pipe curtain structure, side
Portion's preliminary bracing (3), bottom preliminary bracing (4) and steel pipe (1) and steel plate (2) form the ring-shaped cavity supporting construction of sealing.
3. a kind of upper-soft lower-hard ground tunnel support structure as claimed in claim 2, it is characterised in that：Described supporting construction
Also include secondary lining (11)；Described secondary lining (11) is to pour in sidepiece preliminary bracing (3) and bottom preliminary bracing (4)
The U-shaped reinforced concrete structure of inner side, the both sides upper end of secondary lining (11) and two steel pipes of pipe curtain structure both sides bottom
(1) it is fixedly connected.
4. a kind of upper-soft lower-hard ground tunnel support structure as claimed in claim 1, it is characterised in that：Described steel plate (2)
Along tunnel, axial direction is continuously arranged, between two pieces of steel plates (2) between adjacent steel pipe (1) column (5) is provided with；Described is vertical
Post (5) is the member structure that the radial direction along tunnel is arranged, the two ends of column (5) are separately fixed at adjacent two blocks of steel plates (2)
On.
5. a kind of upper-soft lower-hard ground tunnel support structure as claimed in claim 1, it is characterised in that：Described steel pipe (1)
The many steel pipe reinforcing bars (6) along tunnel axially spaced-apart arrangement are inside equipped with, circumferencial direction of the steel pipe reinforcing bar (6) along tunnel will be all
Steel pipe (1) be connected as overall structure, steel pipe reinforcing bar (6) is by concreting in connection cavity (7).
6. a kind of upper-soft lower-hard ground tunnel support structure as claimed in claim 3, it is characterised in that：Described secondary lining
(11) many have been poured along the spaced apart lining cutting reinforcing bar (10) of tunnel axial direction in；The both sides of described lining cutting reinforcing bar (10)
Upper end is welded to connect to form the loop configuration for being centered around tunnel periphery with the both sides lower end of corresponding steel pipe reinforcing bar (6).
7. a kind of upper-soft lower-hard ground tunnel support structure as claimed in claim 1, it is characterised in that：Described pipe curtain structure
Support bar (8) is provided between bottom preliminary bracing (4)；The upper end of described support bar (8) is fixed on the side of steel pipe (1)
Wall, lower end is supported on the hard soil layer of tunnel bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621164136.7U CN206144578U (en) | 2016-10-25 | 2016-10-25 | Last soft hard ground layer tunnel supporting structure down |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621164136.7U CN206144578U (en) | 2016-10-25 | 2016-10-25 | Last soft hard ground layer tunnel supporting structure down |
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| Publication Number | Publication Date |
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| CN206144578U true CN206144578U (en) | 2017-05-03 |
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ID=58623797
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621164136.7U Active CN206144578U (en) | 2016-10-25 | 2016-10-25 | Last soft hard ground layer tunnel supporting structure down |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437781A (en) * | 2016-10-25 | 2017-02-22 | 中铁第四勘察设计院集团有限公司 | Upper-soft lower-hard stratum tunnel supporting structure and construction method thereof |
| CN112049032A (en) * | 2020-07-27 | 2020-12-08 | 成龙建设集团有限公司 | Method for reinforcing municipal highway door opening |
-
2016
- 2016-10-25 CN CN201621164136.7U patent/CN206144578U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437781A (en) * | 2016-10-25 | 2017-02-22 | 中铁第四勘察设计院集团有限公司 | Upper-soft lower-hard stratum tunnel supporting structure and construction method thereof |
| CN106437781B (en) * | 2016-10-25 | 2019-04-19 | 中铁第四勘察设计院集团有限公司 | A kind of upper-soft lower-hard ground tunnel support structure and its construction method |
| CN112049032A (en) * | 2020-07-27 | 2020-12-08 | 成龙建设集团有限公司 | Method for reinforcing municipal highway door opening |
| CN112049032B (en) * | 2020-07-27 | 2022-05-17 | 成龙建设集团有限公司 | Method for reinforcing municipal highway door opening |
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