CN209444343U - A kind of hole column tunneling is inverse to build underground structure - Google Patents
A kind of hole column tunneling is inverse to build underground structure Download PDFInfo
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- CN209444343U CN209444343U CN201920095127.4U CN201920095127U CN209444343U CN 209444343 U CN209444343 U CN 209444343U CN 201920095127 U CN201920095127 U CN 201920095127U CN 209444343 U CN209444343 U CN 209444343U
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Abstract
The utility model provides that a kind of hole column tunneling is inverse to build underground structure, belongs to underground structure and builds technical field, wherein the inverse underground structure of building of hole column tunneling includes upper pilot tunnel, lower pilot tunnel, main arch just branch, permanent column, top beam, bottom girder and bottom plate；Upper pilot tunnel is just propped up far from the side setting main arch of lower pilot tunnel；Skirt piles are provided between the upper pilot tunnel of two sides and corresponding lower pilot tunnel；Permanent column is set between the upper pilot tunnel at middle part and corresponding lower pilot tunnel；Between permanent column, middle plate is fixedly installed between permanent column and skirt piles；Permanent column is square column or steel pipe column.The operations such as transport processing, positioning measurement, lifting fixation of the steel pipe column in narrow pilot tunnel can be evaded completely by the inverse underground structure of building of column tunneling in hole provided by the utility model, difficulty of construction is big, operating environment is poor, positioning accuracy and difference settlement control require construction difficult problem high, that bean column node construction is complicated, difficulty of construction reduces significantly, speed of application is accelerated, and risk is more controllable.
Description
Technical field
The utility model relates to underground structures to build technical field, build underground in particular to a kind of hole column tunneling is inverse
Structure.
Background technique
In the 1990s, cavern-pile method is succeeded application in Fu-Ba Line of Beijing metro for the first time, good stratum is achieved
Control effect has then obtained widespread adoption in No. 4 lines of Beijing Metro, one phase of No. 10 line, has had accumulated a large amount of experiences, at present
Mainstream engineering method as Beijing Subway Station.
By the development of more than ten years, cavern-pile method and early stage cavern-pile method at this stage in terms of mentality of designing and construction method all
There is very big difference, such as early stage answers eight line Wangfujings and Dongdan station and constructed, passed through using " pilot tunnel+pile foundation+interim center pillar " method
3 small pilot tunnels are excavated on upper layer, apply skirt piles, intermediate prop and beam, arc preliminary bracing in support forms two one columns of arch and faces
When support system, then using bottom carry out main body earth excavation and two lining apply, by two arch one column gibs be converted to
The permanent structure of three two columns of arch；It arrives Tian An-men western station again to construct using " small pilot tunnel+base " method, with Dongdan station and the mansion of a prince
Well station applies a base basis, while abandoning interim center pillar side by adding lower layer's pilot tunnel for base the difference is that changing pile foundation
Case changes suitable build and builds to be inverse, with structural slab when support, reduce the conversion etc. of power directly using steel pipe column as support；And in strength
Pine station uses " pilot tunnel+pile foundation " method, while skirt piles generally use cast-in-situ bored pile and construct；It has arrived at this stage, Beijing
The cavern-pile method Station Design of 6, No. 7 lines of iron has substantially continued the mentality of designing and construction method at Tian An-men western station, but also has very
More differences all increase between the bottom girder and base such as between the bottom girder below two center pillars and below skirt piles and center pillar
Lateral connection forms cross strip footing, so that globality is strengthened.The engineering method combines tunneling open cut and cap excavation method
Advantage, clear with structure stress, process conversion is few, controls the advantages that ground settlement is good, is generally satisfactory and promotes.
The sequence of construction of " hole column " engineering method secondary lining is there are three types of mode at present: full reverse construction, full bottom, half inverse along half
Build method.The lining of Xuanwumen station two uses full reverse construction, and the lining of Dongdan station two uses full bottom, and two lining of sturdy pines station inverse is built using half along half
Method, i.e. subway concourse (platform) are along building, whole inverse build.
Although hole column reverse construction saves many false stulls, but build at construction joint inverse due to being limited by space, applies
There are the waterproof qualities at reserved and the protection difficulty, construction joint of splash guard to be not easy the problems such as guarantee in work.Therefore, it is built inverse
It is easy to generate percolating water at construction joint.At inverse building structure construction joint when the concrete of lower part, since concrete setting is shunk, applying
It is difficult to pour closely knit and gap occur at work seam, to cause mass defect and security risk, influences structural solid quality and just
It is often used.
Steel core concrete column is the main bearing carrier in structure, and the quality of steel pipe column concrete is related to total
Safety and stablization.It because pilot tunnel section is smaller, is limited by working space, the installation accuracy and concrete construction of steel pipe column of steel pipe column
Quality be relatively difficult to guarantee.Since pilot tunnel headroom limits, steel pipe column needs merogenesis, so that number of nodes is more, therefore connects to steel pipe column
The quality of node needs strict control, and center pillar need to use steel pipe column, and the fortune of steel pipe column is carried out in very narrow small pilot tunnel
Defeated processing, positioning measurement lift the operations such as fixed, and difficulty of construction is big, and operating environment is poor, and positioning accuracy and difference settlement control are wanted
Ask high, and bean column node construction is complicated, can node realize effective transmitting of internal force, tectonic sieving, construction depending on node
Precision and construction quality.
Hole column bottom often uses lateral bracing members, and the transport installation difficulty of bracing members is big under enclosed environment, construction speed
Degree is slow, and cost is high.
In conclusion there are the transport processing of steel pipe column, positioning measurement, lifting are solid using reverse construction for " hole column " engineering method at present
Surely equal operations, difficulty of construction is big, and operating environment is poor, and positioning accuracy and difference settlement control require high, bean column node construction complexity
The shortcomings that；Big in the presence of lateral bracing members transport installation difficulty using traditional bottom, speed of application is slow, the high disadvantage of cost.
Utility model content
The utility model provides that a kind of hole column tunneling is inverse to build underground structure, it is intended to it is inverse to solve hole column tunneling in the prior art
Build the above problem existing for underground structure.
The utility model is realized in this way:
A kind of hole column tunneling is inverse to build underground structure, which is characterized in that just props up including upper pilot tunnel, lower pilot tunnel, main arch, is permanent
Column, top beam, bottom girder and bottom plate；
The upper pilot tunnel is arranged the main arch far from the side of the lower pilot tunnel and just props up；
Skirt piles are provided between the upper pilot tunnel of two sides and the corresponding lower pilot tunnel；
The bottom girder is arranged far from the side of the upper pilot tunnel in the lower pilot tunnel at middle part；
The top beam is arranged far from the side of the lower pilot tunnel in the upper pilot tunnel at middle part；
The bottom plate is set between the two neighboring lower pilot tunnel；
The permanent column is set between the upper pilot tunnel at middle part and the corresponding lower pilot tunnel；
Middle plate is fixedly installed between the permanent column and the skirt piles between the permanent column；
The permanent column is square column or steel pipe column.
In an embodiment of the present invention, the junction of the permanent column and the middle plate forms node, in institute
It states node and the side of the lower pilot tunnel is provided with bracket.
In an embodiment of the present invention, the two sides of the permanent column are provided with middle stringer, two it is described in indulge
Beam forms twin-spar construction.
In an embodiment of the present invention, there is the pilot tunnel pilot tunnel just to prop up, and the top that the pilot tunnel just props up is set
It is equipped with ductule.
In an embodiment of the present invention, the lower pilot tunnel is additionally provided in lower skirt piles on the downside of the skirt piles
Base.
The beneficial effects of the utility model are: by column tunneling in hole provided by the utility model it is inverse build underground structure can be complete
Evade the operations such as transport processing, positioning measurement, lifting fixation of the steel pipe column in narrow pilot tunnel, difficulty of construction is big, operating environment
Difference, positioning accuracy and difference settlement control require construction difficult problem high, that bean column node construction is complicated, and difficulty of construction reduces significantly,
Speed of application is accelerated, and risk is more controllable.The setting of especially permanent column, bracket and twin beams can increase integral strength, provide
The stress basis of lifting, facilitates Material Transportation in pilot tunnel, effectively controls relative settlement.
Detailed description of the invention
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is the inverse transverse cross-sectional view for building underground structure of hole column tunneling that the utility model embodiment provides；
The step of Fig. 2 is hole column tunneling that the utility model embodiment the provides inverse construction method for building underground structure is for the moment
Transverse cross-sectional view；
When the step of Fig. 3 is hole column tunneling that the utility model embodiment the provides inverse construction method for building underground structure two
Transverse cross-sectional view；
When the step of Fig. 4 is hole column tunneling that the utility model embodiment the provides inverse construction method for building underground structure three
Transverse cross-sectional view；
When the step of Fig. 5 is hole column tunneling that the utility model embodiment the provides inverse construction method for building underground structure four
Transverse cross-sectional view；
When the step of Fig. 6 is hole column tunneling that the utility model embodiment the provides inverse construction method for building underground structure five
Transverse cross-sectional view；
When the step of Fig. 7 is hole column tunneling that the utility model embodiment the provides inverse construction method for building underground structure six
Transverse cross-sectional view；
When the step of Fig. 8 is hole column tunneling that the utility model embodiment the provides inverse construction method for building underground structure seven
Transverse cross-sectional view；
When the step of Fig. 9 is hole column tunneling that the utility model embodiment the provides inverse construction method for building underground structure eight
Transverse cross-sectional view；
Figure 10 is that hole column tunneling that the utility model embodiment provides is inverse when building underground structure and abolishing lower part prop
Side sectional view；
Figure 11 is the inverse vertical structure schematic diagram for building underground structure of hole column tunneling that the utility model embodiment provides.
Icon: 1- pilot tunnel just props up；2- main arch just props up；3- ductule；4- top beam；5- crown beam；Plate in 6-；7- skirt piles；8-
Permanent column；9- bracket；10- bottom plate；Base in skirt piles under 11-；12- bottom girder；Column base in 13-；The interim center pillar of 14-；15- faces
When support；16- main arch two serves as a contrast；Stringer in 17-.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit the range of claimed invention, but is merely representative of the utility model
Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that indicating position or the term of positional relationship are based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion institute
The equipment or element of finger must have a particular orientation, is constructed and operated in a specific orientation, therefore should not be understood as to this reality
With novel limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is on or below second feature
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature the
Right above two features and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature is in the second spy
Under sign, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of fisrt feature level
Height is less than second feature.
Embodiment one
It present embodiments provides that a kind of hole column tunneling is inverse to build underground structure, please refers to Fig. 1 and Figure 11, this hole column tunneling is inverse
Building underground structure includes upper pilot tunnel, lower pilot tunnel, main arch just branch 2, permanent column 8, top beam 4, bottom girder 12 and bottom plate 10；
Pilot tunnel is only arranged in main arch and 10 layers of bottom plate, and lateral quantity is according to the proposed underground space across several and transverse post net
It is determining, when proposed underground structure be n across when, (n-1) a pilot tunnel is respectively set at column wherein.In the present embodiment, proposed
Underground structure is three across two pilot tunnels being respectively set at center pillar, in conjunction with the pilot tunnel of two sides, i.e. on a horizontal section there are four tools
Upper pilot tunnel and four lower pilot tunnels.
Upper pilot tunnel and lower pilot tunnel all have pilot tunnel and just prop up 1, and the top that pilot tunnel just props up 1 is provided with ductule 3, and ductule 3 is used
In slip casting advance reinforcement, guarantee that pilot tunnel just props up 1 intensity.
Upper pilot tunnel just props up 2 far from the side setting main arch of lower pilot tunnel；It includes between intermediate two upper pilot tunnels that main arch, which just props up 2,
Encircle on side between hogging and the two upper pilot tunnels and intermediate upper pilot tunnel of two sides.Main arch just props up 2 and also sets up close to the side of lower pilot tunnel
There is main arch two to serve as a contrast 16.
Skirt piles 7 are provided between the upper pilot tunnel and corresponding lower pilot tunnel of two sides, lower pilot tunnel is also set up in the downside of skirt piles 7
There is a base 11 in lower skirt piles.
Lower pilot tunnel at middle part is provided with longitudinal bottom girder 12 far from the side of upper pilot tunnel；
Top beam 4 is arranged far from the side of lower pilot tunnel in the upper pilot tunnel at middle part, specifically, top beam 4 is arranged in hogging and side
Between arch；
Bottom plate 10 is set between two neighboring lower pilot tunnel, specifically, bottom plate 10 is laid on, hole column tunneling is inverse to build underground structure
Bottom two sides skirt piles 7 between, be fixedly connected therebetween with bottom girder 12.
The permanent column 8 being arranged between the upper pilot tunnel at middle part and corresponding lower pilot tunnel, permanent column 8 are square column or steel pipe column.Its
The permanent column 8 of middle square column form uses armored concrete, it is ensured that enough intensity.Permanent column 8 improves quality of connection.Upper
Position among pilot tunnel and lower pilot tunnel is provided with middle plate 6, and middle plate 6 is vertically arranged with permanent column 8, and from cross section angle, middle plate 6 is set
It is placed between adjacent permanent column 8, and between permanent column 8 and skirt piles 7.
The junction of permanent column 8 and middle plate 6 forms node, and the side of lower pilot tunnel is provided with bracket 9, bracket in node
9 as in stringer 17 support.On bracket 9, the two sides of permanent column 8 are provided with middle stringer 17, and two middle stringers 17 form double
Girder construction.
Underground structure is built by the way that column tunneling in hole provided by the utility model is inverse, evades steel pipe column completely in narrow pilot tunnel
It transports processing, positioning measurement, lift the operations such as fixed, difficulty of construction is big, and operating environment is poor, positioning accuracy and difference settlement control
It is required that construction difficult problem high, that bean column node construction is complicated, difficulty of construction reduce significantly, speed of application is accelerated, and risk is more controllable.
Embodiment two
A kind of inverse construction method for building underground structure of hole column tunneling is present embodiments provided, Fig. 2-Figure 11 is please referred to, it is this
Construction method carries out tunneling in radiation scope below the house, and rest part is open cut, the hole column for building in embodiment one
Tunneling is inverse to build underground structure, comprising steps of
Step 1: referring to Fig. 2, by pilot tunnel on transverse passage-way excavation construction and lower pilot tunnel；First excavate two sides pilot tunnel, after open
Dig the pilot tunnel at middle part；Lower pilot tunnel is first excavated, afterwards the upper pilot tunnel of excavation, in construction, first branch backfills slip casting in time behind, and progress is real-time
Monitoring measurement, pilot tunnel carry out faces end head plugging afterwards to the end；Before upper pilot tunnel and lower pilot drive, steel tube shed, ductule 3 or deep hole are set
Slip casting advance reinforcement stratum, and necessary reinforcement measure is increased to the transverse passage-way in cut into hole region.Before excavation, pilot tunnel is excavated simultaneously
Supporting.
Step 2: referring to Fig. 3, after the perforation of lower pilot tunnel, in-cavity construction part backplane 10, bottom girder 12 are led under middle part
And waterproof layer, reserved bottom plate 10 are plugged into reinforcing bar, are implemented the pre-buried of the reinforcing bar of permanent column 8, are constructed after the lower pilot tunnel perforation of two sides
7 bases of skirt piles are as 7 basis of skirt piles, construct after the lower pilot tunnel perforation at middle part 7 sole plate 10 of skirt piles and 12 conduct of bottom girder
Middle column base 13 can take the foundation stabilizations measure such as slip casting, root pile and bored concrete pile in the hypodynamic situation of foundation bearing.
Step 3: referring to Fig. 4, downward pilot tunnel extending direction carries out applying for interim center pillar 14 and skirt piles 7 in upper pilot tunnel
Work pours stake top crown beam 5 in the upper pilot tunnel of two sides, and top beam 4 is poured in the upper pilot tunnel at middle part, and waterproof layer is arranged, and reserves
Two lining crown reinforcing bars are plugged into, and waterproof layer is reserved to connect raft, it is upper lead in-cavity construction main arch at the beginning of prop up 2, backfill construction in upper pilot tunnel；It excavates
Support using interim center pillar 14 as top beam 4 in the process, interim center pillar 14 is constructed using manually digging hole, with permanent column
8 are staggeredly arranged, and skirt piles 7 are constructed using manually digging hole, and base form and foundation stabilization measure are consistent with center pillar.It please refers to
Sandwiched one permanent column 8 between Figure 11, Zong Xiangshang, two interim center pillars 14.Face specifically, being also set up in the upper pilot tunnel at middle part
When support 15 be convenient for interim center pillar 14 constructions.
Step 4: referring to Fig. 5, by setting main arch vault ductule 3 in transverse passage-way, pre-pouring grout strengthening stratum is symmetrically opened
It digs both sides and encircles simultaneously supporting, hogging is constructed and side arch is staggered, and certain fore-and-aft distance is constructed, in construction while to the behind for propping up 2 at the beginning of main arch
It carries out slip casting and carries out the Real-Time Measuring；
Step 5: referring to Fig. 6, after just branch 2 reaches design strength after main arch, pilot tunnel within the scope of permanent structure section is removed
Grid, construction main arch two lining 16, side wall and waterproof layer, reserved steel bar are plugged into subsequent structural, and waterproof layer is reserved to connect raft；Pilot tunnel lattice
Grid steelframe, which longitudinally removes length, should not exceed 6m according to monitoring measurement strict control.
Step 6: please referring to Fig. 7 and Figure 10, continues to excavate downwards soil layer to middle 6 bottom absolute altitude of plate, entirely mould, pours
Plate 6, middle stringer 17, upper layer sidewall structure and laying waterproof layer, basement one closing cyclization, 8 model of interim center pillar 14 and permanent column
The middle plate 6 enclosed is poured to the later period；It is arranged in the conduct of fashioned iron bracket 9 and indulges twin beams support, it is pre- indulges twin beams side by by design requirement
Reinforcing bar is buried effectively to connect with interim 14 node of center pillar；Specifically, fashioned iron bracket is respectively set in interim center pillar 14 and 8 two sides of permanent column
9 and steel concrete bracket 9 as the support for indulging twin beams in center pillar two sides, interim center pillar 14 and 8 range of permanent column are locally stayed during excavation
Hole, interim center pillar 14 are abolished after permanent column 8 reaches intensity, and plate 6 pours after main structure is closed again AT STATION in box out range.
Step 7: referring to Fig. 8, continuing to excavate soil layer 10 absolute altitude of plate on earth downwards, under abolishing within the scope of main structure
Pilot tunnel is laid with bed course, waterproof layer, pours bottom plate 10 and sidewall structure；Earth excavation should in kerve, after pick and apply by the way of side
Work.To avoid the relatively large disturbances to hole subsoil, mechanical excavation can only be dug to the above position 300mm of bed course, remaining uses excavated by manual work
It removes；With net spray supporting between excavation construction stake.
Step 8: referring to Fig. 9, pour the middle plate 6 of permanent column 8, bracket 9 and permanent 8 range of column, emphasis vibrates beam column section
The concrete of point part, and make middle stringer 17 and bracket 9 closely connected, top beam 4 is closely connect with permanent column 8；It is reached to permanent column 8
To after design strength, interim center pillar 14 is abolished from top to bottom, pours the middle plate 6 of interim 14 range of center pillar；
Step 9: construction station internal structure.
In general, with proposed underground structure side wall and center pillar top/bottom part, along the longitudinally disposed single arch stalk of underground structure
Pilot tunnel is leading in-cavity construction skirt piles 7, interim center pillar 14, base, top beam 4 and crown beam 5, then the lining of section construction main arch two 16,
The permanent lateral stressed multiple arch multispan structure being located at the top of the proposed underground space together is formed, and connect formation permanently with crown beam 5
The interim center pillar 14 of lateral ledge-skirt piles 7- carries system, inverse to build single span or multispan, single-layer or multi-layer under the protection of this system
Underground space structure pours permanent center pillar, abolishes interim center pillar 14, pour interim center pillar after underground space structure closing molding
14 and permanent center pillar plate 6 in the residue of box out range in digging process.
In the present embodiment, it is successively main arch, middle plate 6 and side wall, bottom plate 10 and side wall, side that structure two served as a contrast, which pours sequence,
Wall is first poured pours position connector using the construction of funnel casting method with after, by pour pressure and vibrating spear vibrate concreting is close
It is real, one of Grouting Pipe, twice hydroexpansivity polyurethane water-stop glue and construction joint external coating cement-based penetrant are used at construction joint
Crystalline waterproof coating material.
It builds underground structure by the way that column tunneling in hole provided by the utility model is inverse and can evade steel pipe column completely in narrow pilot tunnel
Transport processing, the operations such as positioning measurement, lifting be fixed, difficulty of construction is big, and operating environment is poor, positioning accuracy and relative settlement control
System requires construction difficult problem high, that bean column node construction is complicated, and difficulty of construction reduces significantly, and speed of application is accelerated, and risk more may be used
Control.The setting of especially permanent column 8, bracket 9 and twin beams can increase integral strength, provide the stress basis of lifting, facilitate
Material Transportation in pilot tunnel, effectively controls relative settlement.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for
For those skilled in the art, various modifications and changes may be made to the present invention.All spirit and original in the utility model
Within then, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of hole column tunneling is inverse to build underground structure, which is characterized in that including upper pilot tunnel, lower pilot tunnel, main arch just branch, permanent column,
Top beam, bottom girder and bottom plate；
The upper pilot tunnel is arranged the main arch far from the side of the lower pilot tunnel and just props up；
Skirt piles are provided between the upper pilot tunnel of two sides and the corresponding lower pilot tunnel；
The bottom girder is arranged far from the side of the upper pilot tunnel in the lower pilot tunnel at middle part；
The top beam is arranged far from the side of the lower pilot tunnel in the upper pilot tunnel at middle part；
The bottom plate is set between the two neighboring lower pilot tunnel；
The permanent column is set between the upper pilot tunnel at middle part and the corresponding lower pilot tunnel；
Middle plate is fixedly installed between the permanent column and the skirt piles between the permanent column；
The permanent column is square column or steel pipe column.
2. column tunneling in hole according to claim 1 is inverse to build underground structure, which is characterized in that the permanent column and the middle plate
Junction formed node, the side of the lower pilot tunnel is provided with bracket in the node.
3. column tunneling in hole according to claim 1 is inverse to build underground structure, which is characterized in that the two sides of the permanent column are arranged
There is middle stringer, two middle stringers form twin-spar construction.
4. column tunneling in hole according to claim 1 is inverse to build underground structure, which is characterized in that the upper pilot tunnel and it is described under lead
There is pilot tunnel just to prop up in hole, and the top that the pilot tunnel just props up is provided with ductule.
5. column tunneling in hole according to claim 1 is inverse to build underground structure, which is characterized in that the lower pilot tunnel is in the skirt piles
Downside be additionally provided with a base in lower skirt piles.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109899087A (en) * | 2019-01-21 | 2019-06-18 | 成都市建筑设计研究院 | A kind of hole column tunneling is inverse to build underground structure and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899087A (en) * | 2019-01-21 | 2019-06-18 | 成都市建筑设计研究院 | A kind of hole column tunneling is inverse to build underground structure and construction method |
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Address after: 610017 No. 4, floor 1, building 1, No. 28, dongchenggenxia street, Qingyang District, Chengdu, Sichuan Patentee after: Chengdu architectural design and Research Institute Co.,Ltd. Address before: No.16, dongyuheyan street, Qingyang District, Chengdu, Sichuan 610017 Patentee before: CHENGDU ARCHITECTURAL DESIGN & Research Institute |