CN105298516A - Combined supporting structure of steel pipe pile steel-bar-embedded tunnel composite lining used for soft foundation - Google Patents
Combined supporting structure of steel pipe pile steel-bar-embedded tunnel composite lining used for soft foundation Download PDFInfo
- Publication number
- CN105298516A CN105298516A CN201510767206.1A CN201510767206A CN105298516A CN 105298516 A CN105298516 A CN 105298516A CN 201510767206 A CN201510767206 A CN 201510767206A CN 105298516 A CN105298516 A CN 105298516A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- pipe pile
- lining
- tunnel
- soft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A combined supporting structure of a steel pipe pile steel-bar-embedded tunnel composite lining used for a soft foundation aims at effectively solving the sedimentation problem during the post-construction operation period of a tunnel, and meanwhile the combined supporting structure can effectively control the construction period and is good in structural integrity, high in external load resisting capacity and capable of ensuring tunnel long-time operation safety. The combined supporting structure comprises the annular tunnel composite lining which is composed of a primary supporting part and a secondary lining and is of a closed structure. A waterproof layer is arranged between the primary supporting part and the secondary lining. Steel pipe piles are longitudinally and transversely arranged on the portion, below the inverted arch section of the tunnel composite lining, of the foundation at intervals, and all the steel pipe piles penetrate through soft ground and are embedded in bed rock. Main steel bars of the secondary lining are fixedly connected with the tops of the steel pipe piles through connection reinforcing steel bars, and water swelling rubber gaskets wrap the tops of the steel pipe piles. Grouting pipes are distributed between the steel pipe piles in the soft ground.
Description
Technical field
The present invention relates to civil engineering, the combined retaining structure of particularly a kind of steel pipe pile bar planting tunnel recombination lining cutting for soft base
Background technology
Railway construction in China enters the high-speed developing period, build on a large scale along with railway, in circuit, tunnel ratio is also in increase, part tunnel inevitably passes through the deep flabbily interval of substrate, when the deep soft stratum of Tunnel Passing substrate, be usually expressed as base bearing capacity deficiency, surrouding rock deformation is large, the security incident such as even to cave in, the security of operation of serious threat train.
At present, the conventional more employing of Tunnel Base process rolls, change fill out, grouting and reinforcing, compaction pile etc., for the deep soft stratum of substrate, wherein rolling and change to fill out affects larger on the duration, and being only applicable to shallow-layer base treatment (thickness is not more than 3m), bed course bottom soil layer bearing capacity is still lower; Independent grout and strengthen processing effect is difficult to ensure; Compaction pile needs strong rammer real, very easily occurs that compacting not exclusively, causes expansion force upwards to discharge, and causes stake top protuberance cracking, bursting inverted arch and two linings.But, the index request such as ride comfort, lateral stability, structural strength of bullet train to circuit is very high, in view of this, exploitation one is needed can effectively to control tunnel settlement after construction, and the deep soft stratum treatment technology of Tunnel Base of easy construction, safety, to make up the deficiency of old-fashioned single substrate treating method.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of combined retaining structure of the steel pipe pile bar planting tunnel recombination lining cutting for soft base, effectively to solve the settlement issues after sandhog during operation, it effectively can control construction period simultaneously, and structural integrity is good, opposing external load ability is strong, guarantees the long-term operation security in tunnel.
It is as follows that the present invention solves the problems of the technologies described above adopted technical scheme:
The combined retaining structure of a kind of steel pipe pile bar planting tunnel recombination lining cutting for soft base of the present invention, comprise the composite lining of tunnel of the enclosed construction being made up of ring-type preliminary bracing, secondary lining, waterproofing course is provided with between preliminary bracing, secondary lining, it is characterized in that: the ground below described composite lining of tunnel inverted arch section is interior longitudinally, be horizontally arranged at interval steel pipe pile, and each steel pipe pile passes soft stratum and embeds basement rock; The main muscle of described secondary lining and the top of each steel pipe pile are formed a fixed connection by connecting reinforcement, the top outsourcing hydro-expansive rubber packing ring of each steel pipe pile; Grouting Pipe is laid between the inherent each steel pipe pile of described soft stratum.
The invention has the beneficial effects as follows, substrate arranges the steel pipe pile embedding basement rock, forms end and makes use, thus improve the bearing capacity of structure, arrange connecting reinforcement on stake top, one end is implanted the steel pipe pile top other end and is implanted secondary lining, integrally welded with muscle main in secondary lining, make power transmission better effects if; Stake top outsourcing hydro-expansive rubber packing ring, effectively solves because of bar planting splash guard perforation seepy question; Between stake, Grouting Pipe is set, play its stratum improving effect, thus substrate forms the relatively high improvement layer of bearing capacity, add conventional tunnel system composite lining and form combined supporting bearing structure, this structure is strong to the tunnel applicability being in the deep soft stratum of substrate, be particularly useful for passing through artificial backfill, section that supporting capacity is low, effectively can control the differential settlement during tunnel operation, ensure traffic safety.
Accompanying drawing explanation
Fig. 1 is the overall structure figure that the present invention is applicable to the combined retaining structure of the steel pipe pile bar planting tunnel recombination lining cutting of soft base;
Fig. 2 is steel pipe pile and the Grouting Pipe arrangement diagram that the present invention is applicable to the combined retaining structure of the steel pipe pile bar planting tunnel recombination lining cutting of soft base;
Fig. 3 is the stake top outsourcing hydro-expansive rubber bead construction figure that the present invention is applicable to the combined retaining structure of the steel pipe pile bar planting tunnel recombination lining cutting of soft base;
Fig. 4 is the stake top reinforcing bar elevation that the present invention is applicable to the combined retaining structure of the steel pipe pile bar planting tunnel recombination lining cutting of soft base;
Fig. 5 is the stake top reinforcing bar top view that the present invention is applicable to the combined retaining structure of the steel pipe pile bar planting tunnel recombination lining cutting of soft base;
Fig. 6 is that the present invention is applicable to bar connecting arrangement diagram in the stake top reinforcing bar of the combined retaining structure of the steel pipe pile bar planting tunnel recombination lining cutting of soft base and secondary lining.
Component shown in figure, position and corresponding mark: in the shotcrete layer 3a of basement rock 1, soft stratum 2, preliminary bracing, the anchor pole 3b of preliminary bracing, waterproofing course 4, secondary lining 5, secondary lining, in lengthways main steel bar 5a, secondary lining, in lacing wire 5b, secondary lining, muscle 8a, pile ring muscle 8b, steel pipe socket 8c, hydro-expansive rubber packing ring 9, Grouting Pipe 10 are indulged in the main muscle 5c of hoop, inverted arch section 6, inverted arch backfill layer 7, steel pipe pile 8, stake top.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
With reference to Fig. 1, the combined retaining structure of a kind of steel pipe pile bar planting tunnel recombination lining cutting for soft base of the present invention, comprise the composite lining of tunnel being made up of the enclosed construction of ring-type preliminary bracing, secondary lining 5, between preliminary bracing, secondary lining 5, be provided with waterproofing course 4.Preliminary bracing comprises the anchor pole 3b of shotcrete layer 3a, preliminary bracing.Ground below described composite lining of tunnel inverted arch section 6 is interior longitudinally, be horizontally arranged at interval steel pipe pile 8, each steel pipe pile 8 passes soft stratum 2 and embeds basement rock 2, the main muscle of described secondary lining 5 and the top of each steel pipe pile 8 are formed a fixed connection by connecting reinforcement, namely substrate arranges the steel pipe pile 8 embedding basement rock, form end and make use, thus improve the bearing capacity of structure, on stake top, connecting reinforcement is set, one end is implanted the steel pipe pile 8 top other end and is implanted secondary lining 5, link into an integrated entity with muscle main in secondary lining 5, make power transmission better effects if.The top of each steel pipe pile 8 and outsourcing hydro-expansive rubber packing ring 9, effectively solve because bar planting to be bored a hole seepy question through waterproofing course 4.Lay Grouting Pipe 10 between the inherent each steel pipe pile 8 of described soft stratum 2, play its stratum improving effect, thus substrate forms the relatively high improvement layer of bearing capacity.This structural system is strong to the tunnel applicability being in the deep soft stratum of substrate, is particularly useful for passing through artificial backfill, section that supporting capacity is low, effectively can controls the differential settlement during tunnel operation, ensure traffic safety.
See figures.1.and.2, described steel pipe pile 8 reinforcing scope is between corner, tunnel recombination lining cutting both sides, and quincuncial arrangement, 40cm ~ 50cm is got in stake footpath, horizontal spacing 1 ~ 1.2m, longitudinal pitch 0.6 ~ 0.8m.In order to improve soft stratum further, promote load-carrying capacity of surrounding rock, control foundation settlement, Grouting Pipe 10 is set between adjacent steel pile tube 8, long 2 ~ the 3m of described Grouting Pipe 10, diameter 25 ~ 35mm, horizontal spacing 1 ~ 1.2m, longitudinal pitch 0.6 ~ 0.8m, body is distributed with the perforate for slurries diffusion, perforate is arranged along tube length direction uniform crossover, should from both sides to centre during slip casting, to guarantee grouting quality.Steel pipe pile 8 and Grouting Pipe 10 interval are arranged, this arrangement form effectively can ensure the performance of an effect, improve rail level stability.
As shown in Figure 3, because waterproofing course 4 has reserved reinforced steel bar perforation, corrode for preventing seepage, at steel pipe pile 8 top outsourcing hydro-expansive rubber packing ring 9, packing ring radial width is 2 times of steel pipe pile wall thickness, hydro-expansive rubber packing ring 9 is in sleeve-shaped, and its top has the boss that radial direction inside contracts formation, and hydro-expansive rubber packing ring 9 is buckled in steel pipe pile 8 top.
As shown in Figure 4, Figure 5, steel pipe pile 8 adopts and transfers steel pipe socket 8c grouting behind shaft or drift lining mode pile.The pile ring muscle 8b that described connecting reinforcement indulges muscle 8a and vertical interval by the stake top at hoop interval is formed, and it is dark that below steel pipe pile 8 top 3 ~ 4m is implanted in its underpart, and steel pipe socket 8c is integrally welded.Usually, stake top is indulged muscle 8a hoop in pile body and is evenly arranged 10 ~ 15, protective layer thickness 40 ~ 50mm, pile ring muscle 8b spacing 200mm, and bottom and steel pipe socket 8c weld.
As shown in Figure 6, steel pipe pile 8 top is through the shotcrete layer 3a of preliminary bracing, and muscle 8a is indulged through waterproofing course 4 in stake top, then extend in secondary lining 5, entirety (meet main muscle as connecting reinforcement and produce superimposed phenomenon, manually can bend skew in right amount, avoid main muscle) is welded into lengthways main steel bar 5a in secondary lining 5, lower vertical inserts soft stratum 2, gos deep into basement rock 2 ~ 3m.
The above the present invention that just explains through diagrams is for some principles of the combined retaining structure of the steel pipe pile bar planting tunnel recombination lining cutting of soft base and function, be not the present invention to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the present invention applies for.
Claims (5)
1. the combined retaining structure for the steel pipe pile bar planting tunnel recombination lining cutting of soft base, comprise the composite lining of tunnel being made up of the enclosed construction of ring-type preliminary bracing, secondary lining (5), waterproofing course (4) is provided with between preliminary bracing, secondary lining (5), it is characterized in that: in the ground of described composite lining of tunnel inverted arch section (6) below longitudinally, the steel pipe pile that is horizontally arranged at interval (8), each steel pipe pile (8) is through soft stratum (2) and embed basement rock (2); The main muscle of described secondary lining (5) and the top of each steel pipe pile (8) are formed a fixed connection by connecting reinforcement, top outsourcing hydro-expansive rubber packing ring (9) of each steel pipe pile (8); Grouting Pipe (10) is laid between the inherent each steel pipe pile (8) of described soft stratum (2).
2. the combined retaining structure of a kind of steel pipe pile bar planting tunnel recombination lining cutting for soft base as claimed in claim 1, is characterized in that: described steel pipe pile (8) is being quincunx laying.
3. the combined retaining structure of a kind of steel pipe pile bar planting tunnel recombination lining cutting for soft base as claimed in claim 1, it is characterized in that: the pile ring muscle (8b) that described connecting reinforcement indulges muscle (8a) and vertical interval by the stake top at hoop interval is formed, it is dark that below steel pipe pile (8) top 3 ~ 4m is implanted in its underpart, and steel pipe socket (8c) is integrally welded.
4. the combined retaining structure of a kind of steel pipe pile bar planting tunnel recombination lining cutting for soft base as claimed in claim 1, it is characterized in that: described Grouting Pipe (10) gos deep into soft stratum (2) 2 ~ 3m, its pipe shaft uniform crossover arranges injected hole.
5. the combined retaining structure of a kind of steel pipe pile bar planting tunnel recombination lining cutting for soft base according to claim 1, it is characterized in that: described hydro-expansive rubber packing ring (9) is in sleeve-shaped, its top has the boss that radial direction inside contracts formation, and hydro-expansive rubber packing ring (9) is buckled in steel pipe pile (8) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510767206.1A CN105298516A (en) | 2015-11-11 | 2015-11-11 | Combined supporting structure of steel pipe pile steel-bar-embedded tunnel composite lining used for soft foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510767206.1A CN105298516A (en) | 2015-11-11 | 2015-11-11 | Combined supporting structure of steel pipe pile steel-bar-embedded tunnel composite lining used for soft foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105298516A true CN105298516A (en) | 2016-02-03 |
Family
ID=55196245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510767206.1A Pending CN105298516A (en) | 2015-11-11 | 2015-11-11 | Combined supporting structure of steel pipe pile steel-bar-embedded tunnel composite lining used for soft foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105298516A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963696A (en) * | 2015-07-28 | 2015-10-07 | 中国电建集团成都勘测设计研究院有限公司 | Construction method for arching tunnel bottom |
| CN107100630A (en) * | 2017-07-03 | 2017-08-29 | 北京市市政工程设计研究总院有限公司 | Pile foundation type bored tunnel and construction method in deep backfill |
| CN107152282A (en) * | 2017-06-09 | 2017-09-12 | 中国铁建大桥工程局集团有限公司 | Steel pipe pile reinforced tunnel inverted arch soft soil foundation construction engineering method |
| CN109882209A (en) * | 2019-03-19 | 2019-06-14 | 重庆交通大学 | Owe the bored concrete pile pre-reinforcement supporting construction and construction method of consolidating stratum under-traverse tunnel |
| CN110206563A (en) * | 2019-06-25 | 2019-09-06 | 深圳市综合交通设计研究院有限公司 | A kind of full packet waterproof composite lining structure resistant to pressure and its construction method |
| CN110219679A (en) * | 2019-07-22 | 2019-09-10 | 西南交通大学 | A kind of soft stratum tunnel lining structure |
| CN110230504A (en) * | 2019-06-25 | 2019-09-13 | 深圳市综合交通设计研究院有限公司 | A kind of soft lower hard full packet waterproof of compound stratum composite lining structure resistant to pressure and its construction method |
| CN111156033A (en) * | 2020-01-20 | 2020-05-15 | 北京市市政工程研究院 | Tunnel inverted arch structure repairing method and repairing structure |
| CN111396088A (en) * | 2020-04-14 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Constraint pile, integral structure for controlling deformation of tunnel bottom and construction method |
| CN111608699A (en) * | 2020-04-08 | 2020-09-01 | 贵州省公路工程集团有限公司 | Assembled inverted arch unit, assembled inverted arch structure and construction method |
| CN113898381A (en) * | 2021-10-09 | 2022-01-07 | 中铁二十三局集团第四工程有限公司 | Grouting method for prestressed lining |
| CN114233336A (en) * | 2021-11-03 | 2022-03-25 | 中交一公局集团有限公司 | Tree-shaped steel pipe pile for supporting arch springing of soft foundation arch in tunnel and construction process thereof |
| CN114810124A (en) * | 2022-03-14 | 2022-07-29 | 中铁第四勘察设计院集团有限公司 | Connecting structure for combined tunnel lining structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0317396A (en) * | 1989-06-13 | 1991-01-25 | Toyo Bussan Kk | Tunnel, fixing work of water-proof sheet thereto, and fixing part |
| CN201176640Y (en) * | 2008-04-05 | 2009-01-07 | 衡水中铁建工程橡胶有限责任公司 | Grouting type expansion steel edge water-stop meet with water |
| CN201496072U (en) * | 2009-08-31 | 2010-06-02 | 中铁第四勘察设计院集团有限公司 | Fully-closed water-proof composite lining structure capable of adjusting water pressure |
| CN103147444A (en) * | 2013-03-24 | 2013-06-12 | 中铁二院工程集团有限责任公司 | Foundation pit enclosure structure capable of realizing supporting while excavating and foundation pit excavating method |
| CN203239357U (en) * | 2013-05-14 | 2013-10-16 | 中交第一公路勘察设计研究院有限公司 | Adjacent tunnel supporting structure suitable for collapsible loess |
| CN203515598U (en) * | 2013-10-18 | 2014-04-02 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel supporting structure bridged active fault |
| CN205225280U (en) * | 2015-11-11 | 2016-05-11 | 中铁二院工程集团有限责任公司 | A combined supporting structure that is used for steel -pipe pile bar planting tunnel composite lining of soft base |
-
2015
- 2015-11-11 CN CN201510767206.1A patent/CN105298516A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0317396A (en) * | 1989-06-13 | 1991-01-25 | Toyo Bussan Kk | Tunnel, fixing work of water-proof sheet thereto, and fixing part |
| CN201176640Y (en) * | 2008-04-05 | 2009-01-07 | 衡水中铁建工程橡胶有限责任公司 | Grouting type expansion steel edge water-stop meet with water |
| CN201496072U (en) * | 2009-08-31 | 2010-06-02 | 中铁第四勘察设计院集团有限公司 | Fully-closed water-proof composite lining structure capable of adjusting water pressure |
| CN103147444A (en) * | 2013-03-24 | 2013-06-12 | 中铁二院工程集团有限责任公司 | Foundation pit enclosure structure capable of realizing supporting while excavating and foundation pit excavating method |
| CN203239357U (en) * | 2013-05-14 | 2013-10-16 | 中交第一公路勘察设计研究院有限公司 | Adjacent tunnel supporting structure suitable for collapsible loess |
| CN203515598U (en) * | 2013-10-18 | 2014-04-02 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel supporting structure bridged active fault |
| CN205225280U (en) * | 2015-11-11 | 2016-05-11 | 中铁二院工程集团有限责任公司 | A combined supporting structure that is used for steel -pipe pile bar planting tunnel composite lining of soft base |
Non-Patent Citations (1)
| Title |
|---|
| 唐茂皓等: "不同群桩设计参数下桩基荷载的简化分析", 《路基工程》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963696A (en) * | 2015-07-28 | 2015-10-07 | 中国电建集团成都勘测设计研究院有限公司 | Construction method for arching tunnel bottom |
| CN107152282A (en) * | 2017-06-09 | 2017-09-12 | 中国铁建大桥工程局集团有限公司 | Steel pipe pile reinforced tunnel inverted arch soft soil foundation construction engineering method |
| CN107100630A (en) * | 2017-07-03 | 2017-08-29 | 北京市市政工程设计研究总院有限公司 | Pile foundation type bored tunnel and construction method in deep backfill |
| CN109882209B (en) * | 2019-03-19 | 2024-01-26 | 重庆交通大学 | Bored pile pre-reinforced supporting structure of undersolidified stratum underpass tunnel and construction method |
| CN109882209A (en) * | 2019-03-19 | 2019-06-14 | 重庆交通大学 | Owe the bored concrete pile pre-reinforcement supporting construction and construction method of consolidating stratum under-traverse tunnel |
| CN110206563A (en) * | 2019-06-25 | 2019-09-06 | 深圳市综合交通设计研究院有限公司 | A kind of full packet waterproof composite lining structure resistant to pressure and its construction method |
| CN110230504A (en) * | 2019-06-25 | 2019-09-13 | 深圳市综合交通设计研究院有限公司 | A kind of soft lower hard full packet waterproof of compound stratum composite lining structure resistant to pressure and its construction method |
| CN110219679A (en) * | 2019-07-22 | 2019-09-10 | 西南交通大学 | A kind of soft stratum tunnel lining structure |
| CN111156033A (en) * | 2020-01-20 | 2020-05-15 | 北京市市政工程研究院 | Tunnel inverted arch structure repairing method and repairing structure |
| CN111608699A (en) * | 2020-04-08 | 2020-09-01 | 贵州省公路工程集团有限公司 | Assembled inverted arch unit, assembled inverted arch structure and construction method |
| CN111396088A (en) * | 2020-04-14 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Constraint pile, integral structure for controlling deformation of tunnel bottom and construction method |
| CN111396088B (en) * | 2020-04-14 | 2024-06-04 | 中铁二院工程集团有限责任公司 | Construction method for controlling tunnel bottom deformation |
| CN113898381A (en) * | 2021-10-09 | 2022-01-07 | 中铁二十三局集团第四工程有限公司 | Grouting method for prestressed lining |
| CN113898381B (en) * | 2021-10-09 | 2024-05-24 | 中铁二十三局集团第四工程有限公司 | Grouting method for prestressed lining |
| CN114233336A (en) * | 2021-11-03 | 2022-03-25 | 中交一公局集团有限公司 | Tree-shaped steel pipe pile for supporting arch springing of soft foundation arch in tunnel and construction process thereof |
| CN114233336B (en) * | 2021-11-03 | 2024-01-30 | 中交一公局集团有限公司 | Tree-shaped steel pipe pile for supporting arch springing of soft foundation arch frame in tunnel and construction process of tree-shaped steel pipe pile |
| CN114810124A (en) * | 2022-03-14 | 2022-07-29 | 中铁第四勘察设计院集团有限公司 | Connecting structure for combined tunnel lining structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105298516A (en) | Combined supporting structure of steel pipe pile steel-bar-embedded tunnel composite lining used for soft foundation | |
| CN205225280U (en) | A combined supporting structure that is used for steel -pipe pile bar planting tunnel composite lining of soft base | |
| CN104153304B (en) | A kind of corrugated steel culvert fills structure and dam filling construction thereof | |
| CN203515597U (en) | Tunnel structure applicable to soft stratum | |
| CN204645075U (en) | A kind of urban road soft foundation underground pipeline bracing means | |
| CN109797769B (en) | Collapsible loess area underground comprehensive pipe gallery foundation structure and construction method thereof | |
| CN105696602A (en) | Composite pile-anchor supporting method and structure for deepening excavation | |
| CN106759223B (en) | Controllable rigid pile+displacement hull+reinforcement cushion combined composite foundation | |
| CN105544512A (en) | Reinforced sack grouting stone-breaking pile with heat transferring tube buried therein and construction method | |
| CN111778793B (en) | Cavity collapse prevention and control structure and construction method | |
| CN209924998U (en) | Shallow earthing shield tunnel is worn road reinforcement protection architecture down | |
| CN102776899B (en) | Anti-floating structure of shallow-buried shield tunnel | |
| CN102966072B (en) | Construction method for treating widened and heightened engineering joint surfaces of dikes on soft clay foundation | |
| CN104631440B (en) | A kind of existing large-section in-situ concrete pile strength core increases foundation pit supporting construction and constructional method | |
| CN102606176A (en) | Collapsible loess tunnel construction method | |
| CN101793027B (en) | Core-grouted static pressure anchor rod pile | |
| CN103015414A (en) | Precast concrete post grouting pile and grouting process | |
| CN103410144B (en) | Prestressed reinforcement piles set into rock and construction method | |
| CN104895111A (en) | Construction method of integrated pipe trench in soft soil | |
| CN205024710U (en) | Adopt raft foundation structure of anti prestressed anchorage of floating cable | |
| CN107100179B (en) | Light combined retaining structure and method for treating large-range high-fill slope engineering | |
| CN205000297U (en) | A earthquake -resistant structure for meizoseismal area high earth -rock dam | |
| CN109914439B (en) | Combined slope support construction method | |
| CN110939142A (en) | Roadbed structure for side slope | |
| CN203977433U (en) | Soft Deep Foundation Pit engineering composite supporting construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |
|
| WD01 | Invention patent application deemed withdrawn after publication |