CN105155578B - Complicated geological and environment access subway existing support system construction method - Google Patents
Complicated geological and environment access subway existing support system construction method Download PDFInfo
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- CN105155578B CN105155578B CN201510349222.9A CN201510349222A CN105155578B CN 105155578 B CN105155578 B CN 105155578B CN 201510349222 A CN201510349222 A CN 201510349222A CN 105155578 B CN105155578 B CN 105155578B
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Abstract
The invention discloses complicated geological and environment accesses subway existing support system construction method for diaphragm walls, it comprises the following steps: chooses in ground-connecting-wall system yet to be built a little as the first axle point, sets original supporting ground-connecting-wall system of original subway station and two intersection of ground-connecting-wall system yet to be built；Then build new ground-connecting-wall from the first axle o'clock to the first joint face and form closing structure；In closing structure, choose the angle point from the first joint face and the second joint face are the most nearest make a call to two ranked third three axes agitating pile as the second axle point, the yet to be built 3rd new ground-connecting-wall left and right sides then starting to set to the second joint face edge from the second axle point；Successively two ranked first, pour first, second, third new ground-connecting-wall between second, third three axes agitating pile, use this method to improve structural stability and waterproof effect.
Description
Technical field
The present invention relates to access subway existing support system construction method, particularly relate to a kind of complicated geological and environment access subway is existing
Support system construction method for diaphragm walls.
Background technology
Diaphram wall originates from Italy, and through the development of decades, Diaphragm Wall is the most ripe, in last century
Phase incoming China, be initially only used as the gear soil of foundation pit enclosure, cut-pff wall, along with urban land day is becoming tight, high-rise and Super High
The appearance of building, it is basic from developing into skyscraper load-bearing as outer wall of basement, and the entirety being greatly reinforced building is held
Loading capability, relative reduction cost, constantly improving especially as construction technology, constantly to ultra-thin, ultra-deep direction
Development, is widely used in rivers and lakes antiseepage, the construction of harbour, dock and sewage treatment plant and be widely used in skyscraper
Basement, underground parking, subway even bridge construction.But complicated in geology and local environmental conditions, geology weakness is again
Containing miscellaneous fill, during periphery next-door neighbour subway station, the construction technology that diaphram wall doubles as outer wall of basement as supporting construction is difficult
Degree is big.
The Chinese patent of Application No. 2010102511997 discloses that " excavation of subway foundation pit in soft soil area impervious leakage-stopping is constructed
Method ", including step: one, ground-connecting-wall seam pre-reinforcement construction: high-pressure rotary jet grouting pile pre-reinforcement structure construction, draw hole, mini-valve tube
Slip casting and sealing of hole and again draw hole and mini-valve tube is pre-buried stand-by；Two, excavation of foundation pit and impervious leakage-stopping construction: for clearly knowing ground
Company's wall seam existing defects and risk point are in the situation surface surface dust cleaning in below excavation of foundation pit face and enter with encased steel plate plate reinforcement method
The anti-drain process of row, uses for the slight breakthrough of percolating water situation and draws the hole note cyanogen method of coagulating and block, for leaking and
The leakage point that water leakage situation is serious uses lateral aperture slip casting method to block, and is filled with slip casting by pre-buried mini-valve tube after having blocked
Reinforce.The method of this patent excavation of subway foundation pit in soft soil area impervious leakage-stopping, is to have constructed at the ground-connecting-wall of the subway constructed
After one-tenth and before excavation of foundation pit, the ground-connecting-wall seam constructed is carried out reinforcing.It is not suitable for the week of the application
The ground-connecting-wall construction method for supporting of next-door neighbour subway station, limit.
The Chinese patent of Application No. 2010101688608 discloses " diaphram wall Y-shaped embedding rock groove section dado structure and ground
The retaining wall forming construction method thereof of lower diaphragm wall Y-shaped embedding rock groove section ", it includes cement-soil mixing pile wall, cement soil deep
Churned pile wall is provided with armored concrete and leads wall, it is characterised in that described cement-soil mixing pile wall includes three " V " type cement
Soil deep mixing wall, three " V " type cement-soil mixing pile walls constitute Y-shaped, described Y-shaped cement soil deep
Churned pile wall two vertical corners be provided with plastic concrete stake and be connected with the cement-soil mixing pile of both sides, thus constitute
Y-shaped embedding rock groove section dado structure.Diaphram wall Y-shaped embedding rock groove section uses " five millings " forming construction method thereof.This is special
Profit discloses diaphram wall Y-shaped embedding rock groove section panelling construction method, and two vertical corners are provided with plastic concrete stake and two
The cement-soil mixing pile of side connects, and the ground-connecting-wall of the periphery next-door neighbour subway station and complicated geology that are not suitable for the application props up
Protect construction method.
The Chinese patent of Application No. 2013106136119 disclose " a kind of immersed tube fetch earth cast-in-place rectangle support pile ground-connecting-wall and
Construction method ", it is characterized in that being fetched earth by immersed tube arranged side by side outside foundation ditch, the armored concrete support pile of cast-in-place square-section,
The combination type ground-connecting-wall that the cement mixing pile being mutually lapped with 1-4 row or cement rotary churning pile collectively constitute, rectangle support pile cross section
Long limit 600-1200mm, minor face 200-700mm, the long 10-35m of stake；Cement mixing pile or cement rotary churning pile diameter 500-1200mm,
The long 10-25m of stake.This patent disclose immersed tube to fetch earth cast-in-place rectangle support pile ground-connecting-wall, be not suitable for the periphery of the application closely
The ground-connecting-wall construction method for supporting of ferrum station and complicated geology.
Summary of the invention
It is an object of the invention to overcome the deficiency of prior art, it is provided that one improves labor productivity, save cost,
Both improve and the waterproof ability of station, former station body original ground-connecting-wall seam crossing, and also strengthened ground, add new and old ground-connecting-wall
The complicated geological of intensity, rigidity and stability and environment access subway existing support system construction method.
Complicated geological and environment access subway existing support system construction method, and it comprises the following steps:
(1) choose in ground-connecting-wall system yet to be built a little as the first axle point, set original supporting ground-connecting-wall of original subway station
System and two intersection of ground-connecting-wall system yet to be built；Original supporting ground-connecting-wall system in original subway station and ground yet to be built
Even select one at two intersection of wall system from the nearest intersection of the first axle point as the first joint face, another intersection
Place, as the second joint face, then builds new ground-connecting-wall from the first axle o'clock to the first joint face, concretely comprises the following steps: choose the first axle
First nearest circuit between point and the first joint face constructs, from the first axle o'clock to the first joint face along yet to be built first set newly
Lian Qiang makes a call to the left and right sides two and ranked first three axes agitating pile；Choose the circuit farther out between the first axle point and the first joint face the most again
Construct, start to the first joint face to make a call to two rows along the yet to be built second new ground-connecting-wall left and right sides set from the first described axle point
Second three axes agitating pile, makes the second three axes agitating pile and the first three axes agitating pile form closing structure；
(2) choose in closing structure from the most nearest angle point of the first joint face and the second joint face as the second axle point, then from
2 axle points start to make a call to two to the second joint face along the yet to be built 3rd new ground-connecting-wall left and right sides set and ranked third three axes agitating pile；
(3) successively two ranked first, pour first, second, third new ground-connecting-wall between second, third three axes agitating pile；
(4) construct the first elevator foundation pit and the three axes agitating pile of the second elevator foundation pit in the centre position at closing structure, three described axles
Mixing pile is constructed along the surrounding of the first elevator foundation pit set and the surrounding of the second elevator foundation pit；
(5) ground in the region surrounded by the 3rd new ground-connecting-wall, the new ground-connecting-wall of closing structure and original supporting ground-connecting-wall system is carried out
The supporting of cast-in-situ bored pile at lower two layer regions and F3/B3 Local handover；
(6) construction first paragraph high-pressure rotary jet grouting pile at the first joint face；
(7) construction second segment high-pressure rotary jet grouting pile at the second joint face；
(8) the 3rd section of high-pressure rotary jet grouting pile of construction on the left of cast-in-situ bored pile.
This method is applicable to circumstance complication, narrow field next-door neighbour's subway and the environment of many solitary buildings, uses this method ground-connecting-wall tool
Having enough rigidity, strength and stability, the strong adaptability to stratum, Construction Vibration is little, and noise is low, and construction headroom is little, energy
Appropriate application soil, barrier performance is good.Reach triple waterproof effect with both sides three axes agitating pile, add the steady of miscellaneous fill soil layer
Fixed.Ground-connecting-wall doubles as outer wall of basement and improves labor productivity, has saved cost, saves the duration, and economy is closed
Reason.The use of high-pressure rotary jet grouting pile, had both improve and the waterproof ability of station, former station body original ground-connecting-wall seam crossing, had also strengthened ground
Base, improves the intensity of ground-connecting-wall, rigidity, stability.The first axle point of this method choose the underground to be migrated away from periphery
Pipeline and the built effect on building of surrounding, not only ensure that the duration, and the formation of beneficially closing structure；The of this method
Choosing of 2 axle points i.e. ensure that stablizing of force structure weak spot, substantially reduces the distance of rehandling mechanical material simultaneously,
Cost and duration are saved.The first axle point of this method and choosing of the second axle point, and the construction started from two axle points respectively is suitable
Sequence and flow process, have passed through detailed mechanics check computation, not only increases structural stability and waterproof effect.
Accompanying drawing explanation
Fig. 1 is complicated geological of the present invention and environment access subway existing support system construction method schematic top plan view；
Fig. 2 is the A node enlarged drawing of Fig. 1 of the present invention；
Fig. 3 is the B node enlarged drawing of Fig. 1 of the present invention；
Fig. 4 is the C node enlarged drawing of Fig. 1 of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in detail.
Complicated geological and environment access subway existing support system construction method as shown in drawings, and it comprises the following steps:
(1) choosing in ground-connecting-wall system yet to be built a little as the first axle point 1, the first axle point selection principle is according to on-the-spot actual
Situation, in order to ensure not delay the duration, the first axle point, away from periphery underground utilities to be migrated, chooses the first axle point 1 energy simultaneously
Built effect on building is not had around when ensureing ground-connecting-wall construction to be onstructed.Connect with setting original supporting of original subway station
Wall system and two intersection of ground-connecting-wall system yet to be built；Original supporting ground-connecting-wall system in original subway station is with yet to be built
Selecting one at two intersection of ground-connecting-wall system from the nearest intersection of the first axle point as the first joint face, another intersects
As the second joint face at face, then build new ground-connecting-wall from the first axle point 1 to the first joint face, concretely comprise the following steps: choose
First nearest circuit between 1 axle point 1 and the first joint face constructs, yet to be built to the first joint face along set from the first axle point 1
First new ground-connecting-wall 2 left and right sides is made a call to two and be ranked first three axes agitating pile；Choose the most again between the first axle point 1 and the first joint face
Circuit farther out construct, from the first described axle point start to first joint face along set the yet to be built second new ground-connecting-wall 3
The left and right sides is made a call to two and be ranked second three axes agitating pile, makes the second three axes agitating pile and the first three axes agitating pile form closing structure；
(2) choose in closing structure from the most nearest angle point of the first joint face and the second joint face as the second axle point 13, then
Start to make a call to two to the second joint face along the yet to be built 3rd new ground-connecting-wall 12 left and right sides set from the second axle point 13 to ranked third three axles and stir
Mix stake；
(3) successively two ranked first, pour first, second, third new ground-connecting-wall between second, third three axes agitating pile；
(4) construct the first elevator foundation pit 4 and three axes agitating pile of the second elevator foundation pit 5 in the centre position at closing structure, described
Three axes agitating pile is constructed along the surrounding of the first elevator foundation pit 4 set and the surrounding of the second elevator foundation pit 5；
(5) carry out in the region surrounded by the 3rd new ground-connecting-wall 12, the new ground-connecting-wall of closing structure and original supporting ground-connecting-wall system
Underground two layer region 8 and the supporting of junction, F3/B3 region 9 cast-in-situ bored pile 6；
(6) construction first paragraph high-pressure rotary jet grouting pile 11 at the first joint face；
(7) construction second segment high-pressure rotary jet grouting pile 7 at the second joint face；
(8) the 3rd section of high-pressure rotary jet grouting pile 10 of construction on the left of cast-in-situ bored pile 6.
Embodiment 1
(1) choosing in ground-connecting-wall system yet to be built a little as the first axle point 1, the first axle point selection principle is according to on-the-spot actual
Situation, in order to ensure not delay the duration, the first axle point, away from periphery underground utilities to be migrated, chooses the first axle point 1 energy simultaneously
Built effect on building is not had around when ensureing ground-connecting-wall construction to be onstructed.Connect with setting original supporting of original subway station
Wall system and two intersection of ground-connecting-wall system yet to be built；Original supporting ground-connecting-wall system in original subway station is with yet to be built
Selecting one at two intersection of ground-connecting-wall system from the nearest intersection of the first axle point as the first joint face, another intersects
As the second joint face at face, then build new ground-connecting-wall from the first axle point 1 to the first joint face, concretely comprise the following steps: choose
First nearest circuit between 1 axle point 1 and the first joint face constructs, yet to be built to the first joint face along set from the first axle point 1
First new ground-connecting-wall 2 left and right sides is made a call to two and be ranked first three axes agitating pile；Choose the most again between the first axle point 1 and the first joint face
Circuit farther out construct, from the first described axle point start to first joint face along set the yet to be built second new ground-connecting-wall 3
The left and right sides is made a call to two and be ranked second three axes agitating pile, makes the second three axes agitating pile and the first three axes agitating pile form closing structure；
(2) choose in closing structure from the most nearest angle point of the first joint face and the second joint face as the second axle point 13, then
Start to make a call to two to the second joint face along the yet to be built 3rd new ground-connecting-wall 12 left and right sides set from the second axle point 13 to ranked third three axles and stir
Mix stake；
(3) successively two ranked first, pour first, second, third new ground-connecting-wall between second, third three axes agitating pile；
(4) construct the first elevator foundation pit 4 and three axes agitating pile of the second elevator foundation pit 5 in the centre position at closing structure, described
Three axes agitating pile is constructed along the surrounding of the first elevator foundation pit 4 set and the surrounding of the second elevator foundation pit 5；
(5) carry out in the region surrounded by the 3rd new ground-connecting-wall 12, the new ground-connecting-wall of closing structure and original supporting ground-connecting-wall system
Underground two layer region 8 and the supporting of junction, F3/B3 region 9 cast-in-situ bored pile 6；
(6) construction first paragraph high-pressure rotary jet grouting pile 11 at the first joint face；
(7) construction second segment high-pressure rotary jet grouting pile 7 at the second joint face；
(8) the 3rd section of high-pressure rotary jet grouting pile 10 of construction on the left of cast-in-situ bored pile 6.
Through inspection: this method is applicable to circumstance complication, narrow field next-door neighbour's subway and the environment of many solitary buildings, uses this method
Ground-connecting-wall has enough rigidity, strength and stability, not only increases structural stability and waterproof effect, and reduces cost
Cost 2%.
Claims (1)
1. complicated geological and environment access subway existing support system construction method, it is characterised in that it comprises the following steps:
(1) choose in ground-connecting-wall system yet to be built a little as the first axle point, set original supporting ground of original subway station
Even wall system and two intersection of ground-connecting-wall system yet to be built；Original supporting ground-connecting-wall system in original subway station with treat
One is selected from the nearest intersection of the first axle point as the first joint face at two intersection of the ground-connecting-wall system built, another
As the second joint face at individual intersection, then build new ground-connecting-wall from the first axle o'clock to the first joint face, concretely comprise the following steps:
First the nearest circuit chosen between the first axle point and the first joint face constructs, from the first axle o'clock to the first joint face along setting
The yet to be built first new ground-connecting-wall left and right sides is made a call to two and be ranked first three axes agitating pile；Choose the most again the first axle point and the first joint face it
Between circuit farther out construct, start to the first joint face along yet to be built second set newly even from the first described axle point
The wall left and right sides is made a call to two and be ranked second three axes agitating pile, makes the second three axes agitating pile and the first three axes agitating pile form closing structure；
(2) choose in closing structure from the most nearest angle point of the first joint face and the second joint face as the second axle point, then
Start to make a call to two to the second joint face along the yet to be built 3rd new ground-connecting-wall left and right sides set from the second axle point and ranked third three axle stirrings
Stake；
(3) successively two ranked first, pour first, second, third new ground-connecting-wall between second, third three axes agitating pile；
(4) construct the first elevator foundation pit and the three axes agitating pile of the second elevator foundation pit in the centre position at closing structure, described
Three axes agitating pile is constructed along the surrounding of the first elevator foundation pit set and the surrounding of the second elevator foundation pit；
(5) carry out in the region surrounded by the 3rd new ground-connecting-wall, the new ground-connecting-wall of closing structure and original supporting ground-connecting-wall system
Underground two layer region and F3/B3 Local handover at the supporting of cast-in-situ bored pile；
(6) construction first paragraph high-pressure rotary jet grouting pile at the first joint face；
(7) construction second segment high-pressure rotary jet grouting pile at the second joint face；
(8) the 3rd section of high-pressure rotary jet grouting pile of construction on the left of cast-in-situ bored pile.
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| CN105926668A (en) * | 2016-06-23 | 2016-09-07 | 程华清 | Construction method of partition wall between ultradeep foundation pit and place near dangerous building |
| CN114837240A (en) * | 2022-05-10 | 2022-08-02 | 中交一公局集团有限公司 | Structure and method for improving bearing capacity of single-chamber closed underground continuous wall foundation by using rear drilled piles |
| CN117211289A (en) * | 2023-11-08 | 2023-12-12 | 中国建筑第六工程局有限公司 | Construction method of multiple systems of foundation in complex environment |
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| JP3620323B2 (en) * | 1999-01-13 | 2005-02-16 | 株式会社大林組 | How to renovate underground structures |
| CN101250883A (en) * | 2008-04-03 | 2008-08-27 | 上海市第一建筑有限公司 | Side-discharging construction method for subway station shared underground wall |
| CN101614019A (en) * | 2008-11-11 | 2009-12-30 | 中铁四局集团建筑工程有限公司 | The multilayer underground structure next to existing building self-supporting construction method |
| CN101914917B (en) * | 2010-08-10 | 2012-01-11 | 中铁一局集团有限公司 | Anti-seepage and leak-blocking construction method for excavation of subway foundation pit in soft soil area |
| KR101467147B1 (en) * | 2014-05-16 | 2014-11-28 | 주식회사 삼안 | Subway platform construction method using semi-rigid connection |
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