CN207609428U - The ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section - Google Patents
The ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section Download PDFInfo
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- CN207609428U CN207609428U CN201721650505.8U CN201721650505U CN207609428U CN 207609428 U CN207609428 U CN 207609428U CN 201721650505 U CN201721650505 U CN 201721650505U CN 207609428 U CN207609428 U CN 207609428U
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Abstract
The utility model is related to wear the ground handling well Shed-pipe Advanced Support pre-add solid system of existing object, including working shaft under shield section, working shaft bottom is shaft floor, and well bore is combined bolting and shotcrete system；It is provided with pipe canopy supporting steel frame above the shaft floor of working shaft bottom, is provided with pipe canopy guide pipe at the top of pipe canopy supporting steel frame and peripherally sets pipe canopy in layer.The utility model, which is directed to, to be worn important construction of structures and can not perform the technical barrier of advance support in hole under shield, take full advantage of the reliability that shotcrete bolt construction method performs the advanced pre-reinforcement of convenience, flexibility and steel tube shed of working shaft, it is not only easy for construction, reduce investment outlay, it is also greatly reduced influence of the surface pre reinforced to ground and its periphery construction of structures, while enhancing the global reliability that shield is passed through safely.
Description
Technical field
The utility model belongs to tunnel construction technical field, and in particular to the ground work of existing object is worn under a kind of shield section
Make well Shed-pipe Advanced Support pre-add solid system.
Background technology
21 century is that the period that underground engineering rapidly develops, the especially construction of China's subway engineering in recent years are even more such as fire
Such as the bitter edible plant.Extensive use of the rock tunnel(ling) machine in subway engineering so that under wear some constructions of structures and become safer, but for
Some especially important constructions of structures, if the improper influence for often causing unrepairable of Reinforcement Measures；Shield machine one
As do not have stratum pre-reinforcement function, and be commonly that large-scale surface drilling is noted to the method for existing building foundation stabilization
Slurry is reinforced, but influences range of grouting and consolidation effect due to the problems such as setting angle and grouting pressure control；Ground simultaneously
Slip casting needs large-scale ground to take up an area, and influences ambient enviroment, Engineering concordance is difficult.Therefore Shield is pacified
Important construction of structures is passed through entirely, and to construction of structures ground, effectively more stringent requirements are proposed for advanced pre-reinforcement.
Invention content
The purpose of this utility model is to provide the ground handling well Shed-pipe Advanced Support pre-add that existing object is worn under a kind of shield section
Solid system, by ground handling well Shed-pipe Advanced Support pre-reinforcement under complex environment, can during shield crossing construction of structures,
The effectively foundation settlement of limitation construction of structures.
Technical solution used by the utility model is：
The ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section, it is characterised in that：
Including working shaft 1,1 bottom of working shaft is shaft floor 5, and well bore is combined bolting and shotcrete system 4；
5 top of shaft floor of 1 bottom of working shaft is provided with pipe canopy supporting steel frame 6, the 6 top setting of pipe canopy supporting steel frame
There is pipe canopy guide pipe 7 and peripherally sets pipe canopy 2 in layer.
1 top exterior walls of working shaft are provided with fore shaft collar tie beam 3.
Pipe canopy 2 is seamless steel pipe, is internally provided with small-sized steel reinforcement cage, and small-sized steel reinforcement cage includes the hoop 13 in center, hoop
13 peripheries are provided with interpolation reinforcing bar 11 and locating support ring 12.
Pipe canopy supporting steel frame 6 is made of crossbeam 9 and perpendicular support 10；
Cross member is based on shaft floor 5, and head piece is that pipe canopy guiding steel pipe 7 provides carrier, and head piece is horizontal the bottom of with
Perpendicular support 10 is set between beam.
Pipe canopy is oriented to 7 one end of steel pipe and is placed on pipe canopy supporting steel frame 6, with 6 head piece of pipe canopy supporting steel frame, 9 welding by both sides
It connects, the other end is squeezed into 1 side wall of working shaft.
Combined bolting and shotcrete system 4 includes advanced anchor tube, steel grating, reinforced mesh and gunite concrete.
The utility model has the following advantages：
The utility model excavates working shaft in earth's surface, in well installing pipe canopy supporting steel frame, setting pipe canopy guide pipe, beat
If pipe canopy is simultaneously inserted into steel reinforcement cage and grouting methol in steel pipe, pipe canopy pre-add solid system, the gunite concrete being related to, steel are formed
It is conventional material that material, cement mortar and steel pipe, which set mechanical equipment etc. used,（Equipment）, corresponding size is general type,
Manufacture easy to process；And pipe boron steel length of tube, horizontal layout can be carried out according to tunnel and construction of structures relative space position relationship
Adjustment, pipe canopy rigidity can be determined according to the cement mortar grade of inside filling, steel reinforcement cage and steel pipe stiffness by itself information summary, be passed through
The pre-add solid system of Shed-pipe Advanced Support, it can be ensured that the safety of surrounding enviroment during shield driven tunnel crossing construction of structures.Active well position
It flexibly selects in combination with construction of structures position, ground and subsurface picture to be reinforced, avoids ground road occupying and pipeline to move as possible and change
Adverse effect efficiently solves the disadvantage for wearing that important construction of structures ground pre-reinforcement construction is difficult, effect is poor, range is small under shield section
End has higher economic benefit and social benefit, is widely used in the engineerings such as urban track traffic, railway, highway
Foreground.
Description of the drawings
Fig. 1 is shaft support structure and Guan Peng（Plane）Schematic diagram.
Fig. 2 is shaft support structural profile（Facade）Schematic diagram.
Fig. 3 is pipe canopy schematic cross-sectional view.
In figure, 1- working shafts, 2- pipe canopies, 3- fore shaft collar tie beams, 4- combined bolting and shotcrete systems, 5- shaft floors, 6- pipe canopy branch
Support steelframe, 7- pipe canopy guide pipes, 8- seamless steel pipes, 9- crossbeams, the perpendicular supports of 10-, 11- interpolation reinforcing bars, 12- locating support rings, 13- rings
Hoop.
Specific implementation mode
The utility model is described in detail With reference to embodiment.
Ground handling well Shed-pipe Advanced Support pre-add solid system involved by the utility model, in working shaft combined bolting and shotcrete side wall
Drilling setting pipe canopy guide pipe, and by pipe canopy guide pipe and the support locating steel frame welding of pipe canopy, pipe canopy is set along pipe canopy guide pipe
Slip casting steel pipe, the interior setting steel reinforcement cage of pipe boron steel pipe and grouting methol, form pipe canopy pre-add solid system, it is ensured that shield driven tunnel crossing
The safety of surrounding enviroment during construction of structures.
Concrete structure includes working shaft 1, and 1 bottom of working shaft is shaft floor 5, and well bore is combined bolting and shotcrete system 4；Work
5 top of shaft floor for making 1 bottom of vertical shaft is provided with pipe canopy supporting steel frame 6, and 6 top of pipe canopy supporting steel frame is provided with pipe canopy guiding
Pipe canopy 2 is set in pipe 7 and peripherally layer.Working shaft 1 provides level for pipe canopy 2 and sets condition.Working shaft 1 should be laid in
Surface condition is preferable, position smaller on traffic impact and not influencing construction of structures safety to be protected, and preferably avoids shield section
Surface.Combined bolting and shotcrete system 4 includes advanced anchor tube, steel grating, reinforced mesh and gunite concrete.Shaft floor 5 is generally adopted
With monolithic reinforced concrete structure, to reinforce Floor load-bearing capacity.
Working shaft 1 is generally constructed using shotcrete bolt construction method, and 1 top exterior walls of working shaft are provided with fore shaft collar tie beam 3.It is beating
If the sides Guan Peng, it is close to shaft wall and performs pipe canopy supporting steel frame 6, play a supportive role to pipe canopy 2.On pipe canopy locating steel frame 6
Welded pipe canopy is oriented to steel pipe 7, plays the role of positioning to pipe canopy 2.
Pipe canopy 2 is seamless steel pipe, needs to set into stratum from pipe canopy guiding steel pipe 7, sets precision to improve, and right
Slip casting is carried out in pipe；Small-sized steel reinforcement cage can be arranged in inside, improve 2 rigidity of pipe canopy, and small-sized steel reinforcement cage includes the hoop 13 in center, ring
It binds round 13 peripheries and is provided with interpolation reinforcing bar 11 and locating support ring 12.
Pipe canopy supporting steel frame 6 is made of crossbeam 9 and perpendicular support 10, generally uses shaped steel；Cross member is using shaft floor 5 as base
Plinth, head piece are that pipe canopy guiding steel pipe 7 provides carrier, and perpendicular support 10 is arranged between head piece and cross member.Except 9 both ends of crossbeam need to be set
It sets outside perpendicular support 10, according to 9 length of crossbeam, centre can also add perpendicular support 10, to shorten crossbeam span, subtract the whole of small pipe shed and become
Shape.Pipe canopy is oriented to 7 one end of steel pipe and is placed on pipe canopy supporting steel frame 6, another with 6 head piece of pipe canopy supporting steel frame, 9 two-sided welding
End is squeezed into 1 side wall of working shaft, and avoids the steel grating in side wall combined bolting and shotcrete system 4.
The ground handling well Shed-pipe Advanced Support pre-add solid system that existing object is worn under above-mentioned shield section has following structure feature：
Working shaft 1 is supported pipe canopy guide pipe 7 and pipe canopy by performing pipe canopy guide pipe 7 in combined bolting and shotcrete side wall
The welding of locating steel frame 6, which is realized, to be accurately positioned, while carrying out effective packing to drilling gap, with effective fixing pipe canopy guide pipe 7, really
Keeping canopy 2 sets precision.Pipe canopy 2 is set along pipe canopy guide pipe 7, injected hole and pressure injection cement are bored on 2 slip casting steel pipe of pipe canopy
Slurry is to reinforce surrounding formation.7 diameter 180mm of pipe canopy guide pipe, wall thickness 6mm, long 500mm, pipe canopy guide pipe 7 should be positioned strictly,
Horizontal inclinometer should be used often to measure the degree of skewness of pipe canopy 2 in 2 drilling process of pipe canopy, it is found that deviant exceeds design requirement
When, it should rectify a deviation in time；Steel pipe circumferential direction center spacing 400mm, about 1 °~2 ° of outer limb, steel pipe use diameter 159mm, wall thickness 6mm
Seamless steel pipe, merogenesis installation.Injected hole aperture on slip casting steel pipe is 10mm, pitch of holes 200mm, is arranged in blossom type, steel
Pipe tail portion（Aperture section）Hell is not used as only slurry section at 2m.Grouting serous fluid uses cement mortar, just intends parameter：The cement mortar ratio of mud
0.8:1~1:1, grouting pressure：Using 0.2~0.4MPa, should have according to practical geological condition, and by testing determination in construction
Close construction parameter.
The construction method of the ground handling well Shed-pipe Advanced Support pre-add solid system of existing object, feature are worn under above-mentioned shield section
It is：
Include the following steps：
Step 1：Working shaft collar tie beam foundation pit is excavated, fore shaft collar tie beam 3 is performed；Using reverse construction working shaft 1, erect
Well foundation pit performs combined bolting and shotcrete system 4 after often excavating 0.5m-1m；Vertical shaft excavation of foundation pit on earth after, perform shaft floor 5；
Step 2：After shaft floor 5 reaches design strength, then sets the sides Guan Peng and be close to shaft wall and perform pipe canopy branch
Support steelframe 6；6 cross member 9 of pipe canopy supporting steel frame will do necessary connection with shaft floor 5, to ensure that supporting steel frame 6 is stablized；Pipe
After canopy supporting steel frame 6 is installed in place, pipe canopy is equidistantly set into shaft wall along 9 upper limb of head piece and is oriented to steel pipe 7, and will be led
To steel pipe 7 and 9 firm welding of head piece；
Step 3：It is oriented to after steel pipe 7 drills along pipe canopy and sets 2 steel pipe of pipe canopy, according to top construction of structures situation, to steel pipe
Small-sized steel reinforcement cage is inside put into improve 2 overall stiffness of pipe canopy；Into pipe canopy 2, grouting methol fills steel pipe, and reinforces circumferentially
Layer；
Step 4：The timely backfilling working vertical shaft 1 after the completion of performing of pipe canopy 2, it is ensured that the safety of surrounding enviroment when shield crossing.
The pre-add solid system of ground handling well Shed-pipe Advanced Support have it is flexible and changeable, it is adaptable, it is safe and reliable the features such as, have
Effect ground solves when wearing important construction of structures under shield section, scarce to construction of structures foundation stabilization is difficult, effect is poor, range is small
Point.The safety of surrounding enviroment, reduces engineering risk when can ensure that Tunnel Passing construction of structures by pipe canopy pre-add solid system.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are new by reading this practicality
Type specification and to any equivalent transformation that technical solutions of the utility model are taken, be the claim institute of the utility model
Cover.
Claims (6)
1. wearing the ground handling well Shed-pipe Advanced Support pre-add solid system of existing object under shield section, it is characterised in that：
Including working shaft（1）, working shaft（1）Bottom is shaft floor（5）, well bore is combined bolting and shotcrete system（4）；
Working shaft（1）The shaft floor of bottom（5）Top is provided with pipe canopy supporting steel frame（6）, pipe canopy supporting steel frame（6）Top
It is provided with pipe canopy guide pipe（7）And pipe canopy is peripherally set in layer（2）.
2. the ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section according to claim 1,
It is characterized in that：
Working shaft（1）Top exterior walls are provided with fore shaft collar tie beam（3）.
3. the ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section according to claim 1,
It is characterized in that：
Pipe canopy（2）For seamless steel pipe, it is internally provided with small-sized steel reinforcement cage, small-sized steel reinforcement cage includes the hoop in center（13）, hoop
（13）Periphery is provided with interpolation reinforcing bar（11）With locating support ring（12）.
4. the ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section according to claim 1,
It is characterized in that：
Pipe canopy supporting steel frame（6）By crossbeam（9）With perpendicular support（10）It constitutes；
Cross member is with shaft floor（5）Based on, head piece is that pipe canopy is oriented to steel pipe（7）Carrier is provided, head piece is horizontal the bottom of with
Perpendicular support is set between beam（10）.
5. the ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section according to claim 4,
It is characterized in that：
Pipe canopy is oriented to steel pipe（7）One end is placed in pipe canopy supporting steel frame（6）On, with pipe canopy supporting steel frame（6）Head piece（9）It is two-sided
Welding, the other end squeeze into working shaft（1）In side wall.
6. the ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section according to claim 1,
It is characterized in that：
Combined bolting and shotcrete system（4）Including advanced anchor tube, steel grating, reinforced mesh and gunite concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721650505.8U CN207609428U (en) | 2017-12-01 | 2017-12-01 | The ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721650505.8U CN207609428U (en) | 2017-12-01 | 2017-12-01 | The ground handling well Shed-pipe Advanced Support pre-add solid system of existing object is worn under shield section |
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| CN207609428U true CN207609428U (en) | 2018-07-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905817A (en) * | 2017-12-01 | 2018-04-13 | 中铁第勘察设计院集团有限公司 | The ground handling well Shed-pipe Advanced Support pre-add solid system of existing thing is worn under shield section |
| CN109736842A (en) * | 2019-01-10 | 2019-05-10 | 中铁隧道集团二处有限公司 | The construction method in foundation-free residential house area is passed through in a kind of slurry shield reduction disturbance |
| CN110067561A (en) * | 2019-04-26 | 2019-07-30 | 中铁二十三局集团有限公司 | Under wear both wired Urban Underground mining sectbn construction methods |
-
2017
- 2017-12-01 CN CN201721650505.8U patent/CN207609428U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905817A (en) * | 2017-12-01 | 2018-04-13 | 中铁第勘察设计院集团有限公司 | The ground handling well Shed-pipe Advanced Support pre-add solid system of existing thing is worn under shield section |
| CN109736842A (en) * | 2019-01-10 | 2019-05-10 | 中铁隧道集团二处有限公司 | The construction method in foundation-free residential house area is passed through in a kind of slurry shield reduction disturbance |
| CN110067561A (en) * | 2019-04-26 | 2019-07-30 | 中铁二十三局集团有限公司 | Under wear both wired Urban Underground mining sectbn construction methods |
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