CN206592141U - A kind of leading screw branch ejection device - Google Patents
A kind of leading screw branch ejection device Download PDFInfo
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- CN206592141U CN206592141U CN201720238311.0U CN201720238311U CN206592141U CN 206592141 U CN206592141 U CN 206592141U CN 201720238311 U CN201720238311 U CN 201720238311U CN 206592141 U CN206592141 U CN 206592141U
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- leading screw
- branch ejection
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Abstract
The utility model provides a kind of leading screw branch ejection device, and the leading screw branch ejection device includes：Dowel, anchor slab, bottom plate, lead screw, top plate and crossbeam；Wherein, the two ends difference connecting bottom board and top plate of the lead screw；The bottom of the bottom plate and the top of anchor slab are connected, and the bottom of the anchor slab and the top of dowel are connected；The dowel and anchor slab are embedded in skirt piles, center pillar and/or steel pipe column；The top of the top plate and the bottom of crossbeam are connected.The sedimentation of both cable architectures can be effectively prevented using the utility model so that both the sedimentation of cable architecture can be limited within the scope of default very little, and can substantially reduce engineering cost.
Description
Technical field
The application is related to underground engineering technical field, more particularly to a kind of leading screw branch ejection device.
Background technology
At present, the catenet that track traffic is formed just utilizes urban underground space at an unprecedented rate.With
Subway gauze is constantly encrypted, and the intersection between new and old circuit, which is passed through, becomes abnormal universal, and existing line is worn under new subway circuit
Engineering also gradually increases.In order to reach preferably transfer effect between newly-built circuit and existing underground station, often using new
Build under station and wear the criss-cross fashion of building up station, to reduce transfer distance to greatest extent.However, this but gives civil Engineering Design
Great problem is brought with construction.On the one hand, in order in the work progress of newly-built circuit, the fortune of existing line is not interrupted
Battalion, sedimentation of the building up station property right side of railroad embankment department to existing structure proposes this pole of sedimentation limit value no more than 3mm
For harsh requirement；On the other hand, one needed to more broad-brush brick or concrete duct measure under so strict settlement request
Very fine technology work is done, the requirement of micro- sedimentation causes these measures usually to have too many difficulties to cope with.
Therefore, controlled in newly-built line construction, it is necessary to take various ancillary methods with ensuring to settle caused by construction infection
System is within 3mm.At present, conventional prior art includes：Around section stratum pre-reinforcement, jack are carried out using all kinds of slip castings
Support top etc..
At present, the case mutually passed through between station and interval, between interval and interval is numerous, and the technology used is arranged
Apply also relatively many, and the case mutually passed through between station and station is then relatively fewer.Below will be to be worn both under newly-built station
Have exemplified by station, with reference to the Engineering Projects (following table) that building up station is worn under the domestic newly-built station of subway in recent years, introduce each engineering and sink
The technology and control effect of control drop, and it is as shown in the table：
Table 1 wears the Engineering Projects of building up station under the domestic newly-built station of subway in recent years
Wherein, Wu Li, Zhao Yanfa, Liu Lei etc., Wang Zhigang describe Beijing Metro 4 from theoretical and construction angle respectively
Line Xuanwumen station uses the situation that existing No. 2 line Xuanwumens station is worn under CRD engineering methods using two rectangular cross sections at a distance of 4.1m, should
Engineering is the engineering of domestic the first station main body transverse station main body；Hao Zhihong, Tao Lianjin, Li Jidong etc. from design and are managed respectively
The angle of opinion describes Beijing Metro No. 10 line princess's grave station and uses CRD using two individual layer twin spans Rectangular Tunnels apart from each other
Engineering method, which is aided with, multiple pre- shores the situation that existing Line 1 princess grave station is worn under technology；Wang Dongyuan etc. is by Beijing Metro No. 10 line
Existing No. 4 line angles door western station engineering is worn under side door western station, both wired lower neighbouring big cross section subway twin tunnel boring constructions are have studied
Influence to Ground Deformation；Xu Yuanqi describes Guangzhou rail transit line 3 physical culture West Road station individual layer Three-arched tunnel using tune
Existing Line 1 physical culture West Road station project situation is worn under whole middle hole method；Xu Yansheng is then described in Sandy Silt and sandstone formation
Stand Chongqing Light Rail No. 10 line laterite and use CRD engineering methods (mechanical equivalent of light excavation knot using two horse-shoe tunnels at a distance of 1.66m
Close control (weak) blast working) under the construction technology stood with wearing existing No. 6 line laterite.
It can be seen that in conventional city soft soil layer, use from several only Engineering Projects at station Xia Chuan stations
Technical measures mainly include：Excavate Stabilizing Grout (contain deep hole grouting), long tubular shanty grout injection, multiple pre- shore (jack
Jacking) etc., in terms of implementation result, except existing princess's grave station settlement Control is inside and outside in 3mm, the sedimentation of other stations is larger.
Thus, it can be known that in the practice of specific practice of construction, above-mentioned engineering method of the prior art there is also many problems,
For example：All kinds of slip castings can not accurately control slurries consumption, pressure, cause effect unobvious or uneven, so that lifting is existing
Cable architecture；Jack branch ejection device can actively adjust (or compensation) both wired sedimentations in theory, still, due to top longeron coagulation
Between structure caused by native contraction distortion gap be difficult to it is closely knit mend slurry, so if it is both wired to accomplish actively to adjust (or compensation)
Sedimentation, then the quantity of used jack need to be enough, thus will make troubles and involve great expense to engineering construction；In addition,
Both wired technical scheme was at present temporarily without engineering real case for complete jack-up, therefore the actual utility of jack branch ejection device also makes
People queries.
Utility model content
In view of this, the utility model provides a kind of leading screw branch ejection device, so as to effectively prevent existing knot
The sedimentation of structure so that both the sedimentation of cable architecture can be limited within the scope of default very little, and can substantially reduce
Engineering cost.
What the technical solution of the utility model was specifically realized in：
A kind of leading screw branch ejection device, including：Dowel, anchor slab, bottom plate, lead screw, top plate and crossbeam；
Wherein, the two ends difference connecting bottom board and top plate of the lead screw；
The bottom of the bottom plate and the top of anchor slab are connected, and the bottom of the anchor slab and the top of dowel are connected；
The dowel and anchor slab are embedded in skirt piles, center pillar and/or steel pipe column；
The top of the top plate and the bottom of crossbeam are connected.
Preferably, the bottom plate and top plate are steel plate.
Preferably, the crossbeam is shaped steel crossbeam.
Preferably, the shaped steel crossbeam is I-steel.
Preferably, bottom plate and top plate that the lead screw is connected with its two ends respectively weld together.
As seen from the above technical solution, in the technical solution of the utility model, it is proposed that above-mentioned can be solidificated in steel
Leading screw branch ejection device in reinforced concrete.When using above-mentioned leading screw branch ejection device, leading screw branch can be passed through in construction early stage
The function of the regulation height of lead screw in ejection device so that leading screw branch ejection device is formed effectively to the bottom of both cable architectures
Support, and phase after construction, can play leading screw branch ejection device combined with armored concrete rear exposed conveying appliance gooseneck rigidity compared with
Big advantage, forms the support of more continuous and effective, so as to effectively prevent existing knot to the bottom of both cable architectures
The sedimentation of structure so that both the sedimentation of cable architecture can be controlled within the scope of default very little.
In addition, above-mentioned leading screw branch ejection device in the utility model is simple in construction, and it can realize and prior art
In the similar function of jack jacking apparatus (except compensation sedimentation function, but in actual applications, of the prior art thousand
The above-mentioned compensation sedimentation function of jin top jacking apparatus also is difficult to play and realized), but construction costs only uses in the prior art
5% or so of the technical scheme of jack jacking apparatus, therefore engineering cost can be substantially reduced, economic benefit is obvious.
In addition, the installation of above-mentioned leading screw branch ejection device in the utility model, using all easily, need to only be poured in concrete
Simple install is carried out before building to can be used, it is not necessary to complicated jack synchronous jacking system, therefore can also mitigate significantly
The workload of staff.
Brief description of the drawings
Fig. 1 be the utility model embodiment in leading screw branch ejection device structural representation.
Installation situation schematic diagrames of the Fig. 2 for the leading screw branch ejection device in the utility model embodiment in the pilot tunnel of side.
Fig. 3 be the utility model embodiment in step 201 schematic diagram.
Fig. 4 be the utility model embodiment in step 202 schematic diagram.
Fig. 5 be the utility model embodiment in step 204 schematic diagram.
Fig. 6 is the schematic diagram for pushing up the gap between total beam and the interior top of preliminary bracing in the utility model embodiment.
Fig. 7 be the utility model embodiment in step 205 schematic diagram.
Fig. 8 be the utility model embodiment in leading screw branch ejection device position view.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, develop simultaneously implementation referring to the drawings
Example, the utility model is further described.
Present embodiments provide a kind of leading screw branch ejection device.
Fig. 1 be the utility model embodiment in leading screw branch ejection device structural representation.Fig. 2 is implemented for the utility model
Installation situation schematic diagram of the leading screw branch ejection device in the pilot tunnel of side in example.As depicted in figs. 1 and 2, the utility model embodiment
In leading screw branch ejection device include：Dowel 11, anchor slab 12, bottom plate 13, lead screw 14, top plate 15 and crossbeam 16；
Wherein, the two ends difference connecting bottom board 13 and top plate 15 of the lead screw 14；
The bottom of the bottom plate 13 is connected with the top of anchor slab 12, and the bottom and the top of dowel 11 of the anchor slab 12 connect
Connect；
The dowel 11 and anchor slab 12 are embedded in skirt piles, center pillar and/or steel pipe column；
The top of the top plate 15 is connected with the bottom of crossbeam 16.
Preferably, in specific embodiment of the utility model, the bottom plate 13 and top plate 15 can be steel plates.
Preferably, in specific embodiment of the utility model, the crossbeam 16 can be shaped steel crossbeam.
Preferably, in specific embodiment of the utility model, the shaped steel crossbeam can be the I-steel of certain model.
Preferably, in specific embodiment of the utility model, can be by even between the crossbeam of each leading screw branch ejection device
Connect steel plate and bolt is attached.
Preferably, in specific embodiment of the utility model, the bottom that the lead screw 14 is connected with its two ends respectively
Plate 13 and top plate 15 weld together.
In addition, in the technical solution of the utility model, can be according to practical situations the need for, pre-set slip
The diameter of leading screw 14.For example, preferably, in specific embodiment of the utility model, the diameter of the lead screw 14 can be with
It is 50mm or other numerical value.
In above-mentioned leading screw branch ejection device, dowel 11 and anchor slab 12 can be embedded in skirt piles, center pillar and/or steel pipe column
In, be whole leading screw branch ejection device basis and take root.The lead screw 14 and top plate 15 at the middle part of bottom plate 13 are leading screw support top dresses
The main body put, furthermore, it is possible to adjust the length of lead screw 14 by artificial mode so that change bottom plate 13 and top plate 15 it
Between vertical range.
Therefore, in the technical solution of the utility model, the main body of above-mentioned leading screw branch ejection device can be arranged on newly-built
In Guan Liang, top longeron in structure of the subway, the dowel and anchor slab of leading screw branch ejection device are embedded in skirt piles, center pillar or steel pipe column
In, and the top of crossbeam 16 of leading screw branch ejection device is abutted with the preliminary bracing in new subway structure, so as to so that
It is present in both cable architectures on preliminary bracing top with above-mentioned leading screw branch ejection device support top.
In the technical solution of the utility model, above-mentioned leading screw branch ejection device can be arranged on institute in several ways
In the concrete structure that need to be set.It will be worn below so that above-mentioned leading screw branch ejection device is arranged under subway in both wired engineerings
Exemplified by specific implementation in new subway structure, the technical solution of the utility model is described in detail.
It is, for example, possible to use step as described below, above-mentioned leading screw branch ejection device is arranged under new subway and worn both
In new subway structure in wired engineering：
Step 201, in the skirt piles of new subway structure, center pillar and/or steel pipe column casting concrete, leading screw support top is filled
The dowel and anchor slab put are embedded in the top of the skirt piles, center pillar and/or steel pipe column.As shown in Figure 3.
Step 202, the bottom plate of leading screw branch ejection device is installed and (for example welded) on anchor slab, and is installed (for example on bottom plate
Welding) lead screw；Top plate is installed and (for example welded) at the top of lead screw, and is installed and (for example welded) at the top of top plate
Crossbeam.As shown in Figure 4.
Step 203, after leading screw branch ejection device is installed, lead screw is adjusted so that crossbeam holds out against new subway structure
Preliminary bracing top, be supported so as to the bottom to both cable architectures.
Step 204, the reinforcing bar of the Guan Liang in colligation pilot tunnel and top longeron, and casting concrete.
In casting concrete, it is necessary to note protecting lead screw, top plate and the crossbeam in leading screw branch ejection device.
In addition, the height (for example, 320mm) according to needed for being installed crossbeam, top board structure can be adopted in the altitude range
With plain concrete construction, bottom can use reinforced concrete structure.As shown in Figure 5.
Step 205, high pressure is carried out to gap by pre-buried Grouting Pipe and mends slurry.
High pressure is carried out to gap by built-in slip casting pipe and mends slurry, the interior top of top longeron or Guan Liang and preliminary bracing can be filled up
Between gap or gap that may be present.
Shrink when concrete, pour leakiness or when Guan Liang, top longeron can not be poured to the interior top of preliminary bracing,
Gap or gap will likely be produced between top longeron or Guan Liang and the interior top of preliminary bracing, as shown in Figure 6.Now, due to leading screw
The top of crossbeam and preliminary bracing in branch ejection device is directly held out against, therefore the exposed parts of crossbeam can be both wired with continued support
Structure, so as to effectively prevent post and lintel system formed it is rear but not closely connected caused by both cable architectures sedimentation.
Moreover, in this step 205, between pilot tunnel during soil excavation, pre-buried slip casting can be passed through according to monitoring situation
Pipe carries out many sub-high pressures to gap and mends slurry, to fill up the gap between top longeron or Guan Liang and the interior top of preliminary bracing, is allowed to close
It is real, and permanent closely connected holding force, as shown in Figure 7.By carrying out the operation that high pressure mends slurry to gap in above-mentioned steps 205, may be used also
Further to control new subway structure two to remove the sedimentation caused by preliminary bracing when serving as a contrast.
In the technical solution of the utility model, above-mentioned leading screw branch is all buried in every skirt piles that can be in the pilot tunnel of side
Ejection device, as shown in figure 8, therefore the spacing of two neighboring leading screw branch ejection device is skirt piles spacing (for example, 1.6 meters).Can be with
All buried in the every center pillar in middle drift and between two center pillars on set buttress according to above-mentioned method above-mentioned
Leading screw branch ejection device, therefore the spacing of two neighboring leading screw branch ejection device is spacing (example between center pillar and buttress or buttress
Such as, 2 meters).
In summary, in the technical solution of the utility model, it is proposed that above-mentioned can be solidificated in armored concrete
Leading screw branch ejection device.When using above-mentioned leading screw branch ejection device, it can pass through in construction early stage in leading screw branch ejection device
The function of the regulation height of lead screw so that leading screw branch ejection device forms effective support to the bottom of both cable architectures, and
After construction the phase, leading screw branch ejection device can be played the larger advantage of rear exposed conveying appliance gooseneck rigidity is combined with armored concrete,
The support of more continuous and effective is formed to the bottom of both cable architectures, so as to effectively prevent the sedimentation of both cable architectures,
Both the sedimentation of cable architecture is controlled within the scope of default very little.
In addition, above-mentioned leading screw branch ejection device in the utility model is simple in construction, and it can realize and prior art
In the similar function of jack jacking apparatus (except compensation sedimentation function, but in actual applications, of the prior art thousand
The above-mentioned compensation sedimentation function of jin top jacking apparatus also is difficult to play and realized), but construction costs only uses in the prior art
5% or so of the technical scheme of jack jacking apparatus, therefore engineering cost can be substantially reduced, economic benefit is obvious.
In addition, the installation of above-mentioned leading screw branch ejection device in the utility model, using all easily, need to only be poured in concrete
Simple install is carried out before building to can be used, it is not necessary to complicated jack synchronous jacking system, therefore can also mitigate significantly
The workload of staff.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements done etc. should be included in the utility model
Within the scope of protection.
Claims (5)
1. a kind of leading screw branch ejection device, it is characterised in that the leading screw branch ejection device includes：Dowel, anchor slab, bottom plate, lead screw,
Top plate and crossbeam；
Wherein, the two ends difference connecting bottom board and top plate of the lead screw；
The bottom of the bottom plate and the top of anchor slab are connected, and the bottom of the anchor slab and the top of dowel are connected；
The dowel and anchor slab are embedded in skirt piles, center pillar and/or steel pipe column；
The top of the top plate and the bottom of crossbeam are connected.
2. leading screw branch ejection device according to claim 1, it is characterised in that：
The bottom plate and top plate are steel plate.
3. leading screw branch ejection device according to claim 1, it is characterised in that：
The crossbeam is shaped steel crossbeam.
4. leading screw branch ejection device according to claim 3, it is characterised in that：
The shaped steel crossbeam is I-steel.
5. leading screw branch ejection device according to claim 1, it is characterised in that：
The bottom plate and top plate that the lead screw is connected with its two ends respectively weld together.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720238311.0U CN206592141U (en) | 2017-03-13 | 2017-03-13 | A kind of leading screw branch ejection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720238311.0U CN206592141U (en) | 2017-03-13 | 2017-03-13 | A kind of leading screw branch ejection device |
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| CN206592141U true CN206592141U (en) | 2017-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894834A (en) * | 2017-03-13 | 2017-06-27 | 北京市轨道交通设计研究院有限公司 | A kind of leading screw branch ejection device and subsidence control method |
-
2017
- 2017-03-13 CN CN201720238311.0U patent/CN206592141U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894834A (en) * | 2017-03-13 | 2017-06-27 | 北京市轨道交通设计研究院有限公司 | A kind of leading screw branch ejection device and subsidence control method |
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