CN105064397A - Open excavation construction method for expanding excavation of station on metro interzone shield tunnel foundation - Google Patents

Open excavation construction method for expanding excavation of station on metro interzone shield tunnel foundation Download PDF

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CN105064397A
CN105064397A CN201510443110.XA CN201510443110A CN105064397A CN 105064397 A CN105064397 A CN 105064397A CN 201510443110 A CN201510443110 A CN 201510443110A CN 105064397 A CN105064397 A CN 105064397A
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station
jurisdiction
column
excavation
tunnel
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CN105064397B (en
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张明聚
刘义
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Beijing University of Technology
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Beijing University of Technology
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Abstract

An open excavation construction method for expanding excavation of a station on a metro interzone shield tunnel foundation method includes the steps that uplift piles, wall columns, a base plate, a middle stand column foundation and transverse supporting beams between the wall columns are constructed in a transverse channel, wherein the base plate is connected with the bottoms of the wall columns, water prevention treatment is conducted, and the wall columns and duct pieces are connected, so that a sealed stress system is formed; soil over the tunnel is subjected to grouting reinforcement, an excavation retaining structure of a station body foundation bit is built, and the top end of the structure is connected with an external campshed or an underground diaphragm wall through a connection beam; slopes are supported through a composite soil nailing supporting technology, foot locking supports are erected at the pile foots, after excavation is conducted on the bottom of a foundation pit, residual duct pieces are removed, connection beams between the wall columns are constructed, and the connection beams are firmly connected with the duct pieces; the transverse support system is constructed. The method is reasonable, feasible and high in maneuverability. By means of application of the method, great economic benefits, social benefits and environmental benefits are achieved. The method has significant engineering application value and development prospects.

Description

A kind of open cutting construction method digging station on Subway Tunnel shield tunnel basis
Technical field
The present invention relates to a kind of on Subway Tunnel shield tunnel basis, dig station structure and open cutting construction method thereof, belong to track traffic technical field of construction.
Background technology
In the middle of numerous subway construction constructions, " shield method " is high with its working security, speed of application is very fast, obtain in subway construction features such as surrounding environment influence are relatively little and apply more and more widely.But, at home in the middle of interval shield construction in the past, the simply single running tunnel construction of form of fracture is only limitted to the use of shield structure, run into shield structure miss the stop problem time, first shield structure being disassembled often, from when hanging out in anterior shield structure well, then proceeding to another shield structure well, again shield structure is re-assemblied, construct; Or in advance station is digged, the width at station and bottom are expanded, then utilizes dilatory equipment to miss the stop dilatory for shield structure.No matter two kinds of modes of missing the stop all can make the utilization ratio of Suporting structure greatly reduce from which angle, the disposable continuous driving distance of shield method is shortened greatly.According to Beijing shield construction present situation statistics on several the subway lines built at present, the shield machine of a practice of construction removes the time of its work holdup in interval, its construction non-propulsion activity duration accounts for total construction and advances 52.7% of the activity duration, the construction of these non-propulsion mainly comprise the construction of the shield structure well of shield machine when missing the stop, shield machine assembling of going into the well, disintegrate, hang out, transition, turn around, draw and miss the stop, if add the work holdup situation of shield machine in the construction of interval, the practice of construction speed of shield machine can be slower, and its utilization rate will be lower.In addition, because present shield construction makes shield machine in construction period very flexible, its dismounting group repeatedly unloads the dilatory application life of shield machine of greatly reducing such as missing the stop.Simultaneously, the construction of launching shaft, received well, the well that turns around and the disintegration of shield machine, hang out, extra operating expenses that transition etc. causes, the expense that the every km of engineering cost cost in shield construction is normally advanced compared with shield machine increases up to nearly about 10%; And the dilatory of shield machine is missed the stop, relate to the extra charge of widening station and bringing, every km increases about 6% ~ 8%.Visible, how effectively the non-propulsion job execution reduced in shield construction is the key point of the utilization ratio problem improving shield machine.
Summary of the invention
Based on the problems referred to above, the present invention proposes a kind of on Subway Tunnel shield tunnel basis, extend subway station structure and open cutting construction method thereof, and its form of structure is the double-deck Metro Station Structure system of freely-supported framed wall pillar.It adopts two space enclosing structure to carry out retaining soil and water; Utilize section of jurisdiction inner support system to carry out section of jurisdiction supporting, unnecessary section of jurisdiction is removed, and utilize rectangular steel plates and " L " shaped cast iron arch springing beam to carry out longitudinal restraint to section of jurisdiction; Adopting in the transverse passage-way that excavates out of hidden construction process, construct the base plate of agent structure and central post strip foundation and both walls intercolumniation cross binding beam, and carry out base plate and wall column, connection between cross binding beam and wall column; Adopt cut and cover method to carry out excavation construction to station agent structure, remove remaining unnecessary section of jurisdiction, the connection of coupling beam between line pipe of going forward side by side sheet and wall column; Utilize the wall column system, side wall, central post etc. constructed as the vertical supporting system of agent structure, utilize base plate, middle plate, top board and the cross binding beam constructed as the cross binding system of agent structure.Its main purpose is that providing a kind of adopts the new technology of building subway station in the underground railway engineering of shield construction, new method, to reduce the non-propulsion operation in the middle of shield-tunneling construction, improves the utilization ratio of Suporting structure.Under this method is mainly used in solving prevailing conditions, interval shield structure (refers to that for the Suporting structure diameter of subway sectional tunnel be about 6m, the single shield tunnel enlarging subway station that its excavation cannot be utilized to be formed) in the middle of tunnel enlarging metro station construction non-propulsion operation too much, the problem that Suporting structure service efficiency is low.
To achieve these goals, the technical solution used in the present invention is:
Step one: construct space enclosing structure A (as campshed adds water-stop curtain or diaphragm wall) planning to build within the scope of subway station, space enclosing structure 1 top is built Guan Liang and is reserved sufficient length reinforcing bar at Guan Liang near side, station, and its hat beam elevation of top should be equal with ground level.The building-in depth of space enclosing structure should meet the requirement of resistance to overturning and Antiseepage stability;
Step 2: adopt Suporting structure to apply subway sectional tunnel, in the interim inner support system in erection section of jurisdiction, inside, section of jurisdiction, the form of structure of inner support system is gate type support structure, for the purpose of construction and safety, each interim inner support system width is advisable so that half section of jurisdiction is wide, each endless tube sheet construction period, ensure to have semi-ring section of jurisdiction at least under the support of inner support system, and connect with longitudinal bracing rod member between adjacent interim inner support system;
Step 3: section of jurisdiction, designed openings position is removed, the reserved steel bar of rectangular steel plates and section of jurisdiction, lower cut place and built-in fitting is adopted to be connected, be connected with the reserved steel bar of " L " shaped cast iron arch springing girder construction and section of jurisdiction, upper cut place and built-in fitting, to carry out longitudinal restraint to section of jurisdiction, upper cut place, and between cast iron arch springing beam and section of jurisdiction, build waterproof concrete carry out waterproof;
Step 4: light section transverse passage-way excavation is carried out to the soil body between the corresponding opening of parallel shield tunnel, after treating soil excavation, uplift pile, station base arrangement and wall column structure is constructed in transverse passage-way, apply the upper and lower incision node of wall column and opening section of jurisdiction, build both walls intercolumniation crossbeam, apply wall column and crossbeam node, between the corresponding wall column in both sides, set up temporary steel support.Station base plate is together with being cast in bottom wall column and build station agent structure central post basis simultaneously, and both sides, central post basis are with base plate compact siro spinning technology and reserve cup-shaped recess and node connector bottom central post;
Step 5: carry out grouting and reinforcing to the soil body above transverse passage-way and section of jurisdiction, drafts in scope at excavation of foundation pit and constructs excavation of foundation pit space enclosing structure B, and be connected with space enclosing structure A by space enclosing structure B with coupling beam;
Step 6: the inner soil body of excavation pit is until design foundation ditch elevation of bottom position, in digging process, in order to keep the stability of excavation slope, compound soil nail support technology is adopted to carry out supporting to side slope and support at footing position install lock pin, in order to avoid impacting construction, lock pin supports and should be arranged in more than plate and meet the lateral stressed requirement of pile body;
Step 7: remove remainder section of jurisdiction, at upper cut place, " L " shaped cast iron arch springing beam be installed and weld with arch springing beam set by wall column position, rectangular steel plates is installed at lower cut place, weld with wall column place rectangular steel plates, complete building of whole base arrangement, at upper and lower opening place, section of jurisdiction, construct coupling beam structure between wall column, apply constructing and build waterproof concrete with waterproof outside upper node of opening section of jurisdiction upper and lower otch node;
Step 8: remove the interim inner support system in section of jurisdiction, inverted arch structure of constructing in shield tunnel;
Step 9: remove temporary steel support between wall column, construct station bottom side wall, central post, construct middle plate and platform slab;
Step 10: construct upper strata, station side wall, central post and top board.The backfill top board top soil body, recovers road surface.
Beneficial effect
A kind of structure and open cutting construction method thereof digging station on Subway Tunnel shield tunnel basis proposed by the invention, effectively decrease the non-propulsion operation in shield-tunneling construction, substantially increase the efficiency of construction of shield-tunneling construction, both for the long distance driving of shield machine provides condition, also possibility had been provided for choosing flexibly of interchange of position.Meanwhile, adopt two space enclosing structure, both ensure that the resistance to overturning of main structure body, to also been removed in work progress the potential safety hazard hidden.The application of rectangular steel plates and " L " shaped cast iron arch springing beam not only serves the effect of longitudinal restraint to the section of jurisdiction of opening part, also make section of jurisdiction and wall column and between section of jurisdiction and wall column the connected node of coupling beam stressed more reasonable, waterproofing work is more simple.The construction of transverse passage-way is that the construction that takes the lead in of base plate creates condition, and as one of the cross binding of wall column, the construction of base plate strengthens the stability of wall column.Station main body adopts cut and cover tunneling, and construction is simple, quick, economy, safety, has added cross binding beam, better can ensure wall column structure and stratum lateral stability between node between wall.Rationally, construction is reliably easy for the technology of the present invention, and stress system conversion is simple clear and definite, and quality is easy to control, and will thoroughly change the conventional program of underground railway construction, its construction application will bring huge economic benefit, social benefit and environmental benefit.
Accompanying drawing explanation
Fig. 1 is the subway station standard section sectional drawing that Subway Tunnel shield tunnel basis of the present invention digs, and Fig. 2 is freely-supported framed wall pillar double-deck subway station three-dimensional structure diagram.
Fig. 3 ~ Figure 14 is each construction way figure that Subway Tunnel shield tunnel of the present invention digs subway station.Wherein, Fig. 3 is bored pile (wall), constructs space enclosing structure 1 and to come of age beam; It is interval by station that Fig. 4 is shield-tunneling construction, and settle shield duct piece in running tunnel AT STATION; Fig. 5 for install inner support system in duct pieces of shield tunnel; Fig. 6, for removing unnecessary section of jurisdiction, and installs rectangular steel plates and " L " shaped cast iron arch springing beam, and builds waterproof concrete and carry out waterproof; Fig. 7 installs section of jurisdiction inner support in inside, section of jurisdiction, laterally excavates transverse passage-way and build uplift pile at corresponding section of jurisdiction opening part; Fig. 8 is construction wall column and base plate, central post basis, and between wall column, sets up temporary steel support, applies the upper lower node between wall column and section of jurisdiction, build the cross binding beam of both walls intercolumniation; Fig. 9 is grouting and reinforcing section of jurisdiction and transverse passage-way upper soil horizon and constructs space enclosing structure 2, carries out coupling beam connection at top Guan Liangchu to space enclosing structure 1 and space enclosing structure 2; Figure 10 for excavate foundation ditch within the scope of station, limit excavation limit supporting; Figure 11, for continuing the excavation soil body until design elevation position, removes the unnecessary section of jurisdiction of residue, carries out longitudinal restraint, and construct coupling beam between wall column and be connected with otch section of jurisdiction incision section of jurisdiction; Figure 12, for removing section of jurisdiction inner support system, builds inverted arch structure in inside, section of jurisdiction; Figure 13, for removing temporary steel support between wall column, constructs bottom side wall, center pillar and middle plate; Figure 14, for constructing station hall layer side wall and central post, builds top board structure, the backfill top board top soil body.
Figure 15 is transverse passage-way standard section sectional drawing.
In figure, 1, road surface, 2, space enclosing structure A, 3, Guan Liang, 4, shield duct piece, 5, wall column, 6, rectangular steel plates, 7, " L " shaped cast iron arch springing beam, 8, waterproof concrete, 9, inverted arch, 10, base plate, 11, central post basis, 12, grouting and reinforcing soil layer, 13, space enclosing structure B, 14, coupling beam, 15, anchor pole, 16, bottom central post, 17, cross binding beam, 18, bottom side wall, 19, middle plate, 20, upper strata side wall, 21, top layer central post, 22, top board, 23, backfill, 24, uplift pile, 25, Guan Liang, 26, interim inner support, 27, transverse passage-way, 28, temporary steel support, 29, excavation of foundation pit steel shotcrete support, 30, platform slab, 31, coupling beam between wall column, 32, lock pin supports, 33, soil nailing.
Detailed description of the invention
As shown in figures 1-15, under a urban road of the present invention, shallow embedding bilayer two is across subway station embodiment, a kind of cut and cover tunneling engineering method digging station on Subway Tunnel shield tunnel basis of the present invention is adopted to apply, its agent structure is made up of (its structure forms as shown in Figure 1) the base plate 10 of cast-in-situ steel reinforced concrete, middle plate 19, top board 22, bottom side wall 18, upper strata side wall 20, wall column 5, shield duct piece 4, cross binding beam 17 bottom central post 16, top layer central post 21, its structure top thickness of earth covering 5.5m, excavated section is of a size of 12m × 20.5m.By reference to the accompanying drawings, construction way of the present invention is further described in detail.
Its construction way of construction that Parallel Interval shield tunnel basis digs subway station of the present embodiment is:
Step one: planning to build punching filling stake within the scope of subway station, constructing space enclosing structure A2, building hat beam 3 at space enclosing structure A2 top and reserving sufficient length reinforcing bar at hat beam 3 near side, station;
Step 2: adopt Suporting structure to apply subway sectional tunnel, install shield duct piece 4 in running tunnel AT STATION, and in the interim inner support 26 in erection section of jurisdiction, shield duct piece 4 inside;
Step 3: section of jurisdiction, design opening portion, the reserved steel bar of rectangular steel plates 6 and section of jurisdiction, lower cut place and built-in fitting is adopted to be connected, be connected with the reserved steel bar of " L " shaped cast iron arch springing beam 7 and section of jurisdiction, upper cut place and built-in fitting, to carry out longitudinal restraint to section of jurisdiction, upper cut place, and between cast iron arch springing beam and section of jurisdiction, build waterproof concrete 8 carry out waterproof;
Step 4: light section transverse passage-way 27 is carried out to the soil body between the corresponding opening of parallel shield tunnel and excavates,
Step 5: after treating soil excavation, in transverse passage-way 27, build station base plate 10 and wall column 5, apply wall column 5 and shield duct piece about 4 incision node, build cross binding beam 17, apply wall column 5 and cross binding beam 17 node, between wall column 5, set up temporary steel support 28.The base plate 10 at station is together with being cast in bottom wall column 5 and build agent structure central post basis, station 11 simultaneously, and 11 both sides, central post basis are with base plate 10 compact siro spinning technology and reserve cup-shaped recess and node connector bottom central post;
Step 6: carry out grouting and reinforcing to soil layer above transverse passage-way and section of jurisdiction, drafts in scope at excavation of foundation pit and constructs excavation of foundation pit space enclosing structure B13, and be connected with space enclosing structure A2 by space enclosing structure B13 with coupling beam 14;
Step 6: the inner soil body of excavation pit is until design foundation ditch elevation of bottom position, in digging process, adopt composite soil nailing to carry out supporting to excavation pit and support 32 at footing position install lock pin, for avoiding impact construction, lock pin supports 32 positions and is arranged in plate more than 19;
Step 7: remove remainder section of jurisdiction, " L " shaped cast iron arch springing beam 7 is installed at upper cut place and welds with arch springing beam set by wall column position, rectangular steel plates is installed at lower cut place, weld with wall column place rectangular steel plates 6, complete building of whole base arrangement, at upper and lower opening place, section of jurisdiction, construct coupling beam 31 between wall column, apply constructing and building waterproof concrete 8 with waterproof outside upper node of opening section of jurisdiction upper and lower otch node;
Step 8: remove the interim inner support 26 in section of jurisdiction, inverted arch 9 structure of constructing in shield tunnel;
Step 9: remove temporary steel support 28 between wall column, construct station bottom side wall 18, central post 16, construct middle plate 19 and platform slab 30;
Step 10: construct upper strata, station side wall 20, central post 21 and top board 22.The backfill top board top soil body 23, recovers road surface 1.
11 step: the construction completing this job step, carries out next step construction.
Described space enclosing structure A2 is that campshed adds water-stop curtain or continuous underground wall structure, builds hat beam 3 at space enclosing structure A2 top, and hat beam 3 elevation of top is equal with ground 1 absolute altitude.Space enclosing structure A2 building-in depth should meet resistance to overturning and Antiseepage stability requirement; Described Shield, is characterized in that its section of jurisdiction external diameter is about 6m, and single shield tunnel cannot be utilized to extend subway station; Install shield duct piece 4 in described running tunnel AT STATION, it is characterized in that, the shield duct piece 4 installed is straight joint splicing, and the hoop strengthened between section of jurisdiction connects; In the interim inner support 26 in erection section of jurisdiction, shield duct piece 4 inside, the interim inner support 26 of setting up is for convenience of the gate type support structural system of construction.For the purpose of construction and safety, each interim inner support system 26 width is advisable so that half section of jurisdiction is wide, each endless tube sheet construction period, ensure to have semi-ring section of jurisdiction at least under the support of inner support system, and connect with longitudinal bracing rod member between adjacent interim inner support system.
Described rectangular steel plates 6, its longitudinal stretching rigidity should be enough large, to retrain in the demolishing process of section of jurisdiction, longitudinal dispersion occurs; " L " shaped cast iron arch springing beam 7, except meeting longitudinal stretching rigidity, also should have enough bending stiffnesses, to meet connection stiffness demand.
Described light section transverse passage-way 27, itself and Lin Jie position, section of jurisdiction should arrange between wall column construction working, workplace elevation of top should higher than wall column elevation of top 20 ~ 30cm, and transverse passage-way elevation of bottom should be no less than wall column elevation of bottom, and its excavation width is more than or equal to the width of a wall column; The uplift pile 24 of constructing in described transverse passage-way 27, its ground stabilization intensity should meet base bearing capacity examination criteria.
Described space enclosing structure B13 is underground continuous wall-enclosure structure; Describedly improve soil layer above transverse passage-way 27 and shield duct piece 4, its improvement scope, depending on concrete soil body condition, does not do concrete norm.Coupling beam 14 between described space enclosing structure, its elevation of top is not above the ground level absolute altitude; Be connected with the waterproof concrete 8 of building in " L " shaped cast iron arch springing beam 7 bottom described space enclosing structure B13, and should take measures to avoid causing comparatively large disturbances to the node constructed.
In described step 7, described " L " shaped cast iron arch springing beam 7 and rectangular steel plates 6 should be fastenedly connected with section of jurisdiction reserved steel bar and built-in fitting.
Described inverted arch 9 height of building meets the design height setting of gauge requirement and wall column 5 when normally will run by train.
Described central post 16 is concrete filled steel tube central post.
Its form of structure of described main body station is the double-deck Metro Station Structure system of freely-supported framed wall pillar.
Be more than an exemplary embodiments of the present invention, enforcement of the present invention is not limited thereto.

Claims (9)

1. on Subway Tunnel shield tunnel basis, dig the cut and cover tunneling method at station, it is characterized in that: Specific construction step is,
Step one: construct space enclosing structure A (2) planning to build within the scope of subway station, space enclosing structure A (2) top is built Guan Liang (3) and is reserved sufficient length reinforcing bar at Guan Liang (3) near side, main body station;
Step 2: adopt Suporting structure to apply subway sectional tunnel, install shield duct piece (4) in running tunnel AT STATION, and in the inside erection interim inner support in section of jurisdiction, section of jurisdiction (26);
Step 3: section of jurisdiction, design opening portion, rectangular steel plates (6) is adopted to be connected with the reserved steel bar of section of jurisdiction, lower cut place and built-in fitting, be connected with the reserved steel bar of " L " shaped cast iron arch springing beam (7) and section of jurisdiction, upper cut place and built-in fitting, to carry out longitudinal restraint to section of jurisdiction, upper cut place, and between " L " shaped cast iron arch springing beam (7) and section of jurisdiction, build waterproof concrete (8) carry out waterproof;
Step 4: light section transverse passage-way (27) excavation is carried out to the soil body between the corresponding opening of parallel shield tunnel, after treating soil excavation, uplift pile, station base arrangement (10) and wall column (5) is built in transverse passage-way, apply the upper and lower incision node of wall column and opening section of jurisdiction, build supporting traverse between wall column (17), apply wall column and supporting traverse node, between wall column, set up temporary steel support (28); Build agent structure central post basis, station (11) together with station base plate (10) and wall column (5) bottom is cast in, (11) both sides, central post basis are with base plate (10) compact siro spinning technology and reserve cup-shaped recess and node connector bottom central post simultaneously;
Step 5: grouting and reinforcing is carried out to transverse passage-way (27) and shield duct piece (4) top soil layer, draft in scope at excavation of foundation pit and construct excavation of foundation pit space enclosing structure B (13), and with coupling beam (14), space enclosing structure B (13) is connected with space enclosing structure A (2);
Step 6: the inner soil body of excavation pit is until design foundation ditch elevation of bottom position, in digging process, in order to ensure the stability of excavation slope, adopt compound soil nail support technology to carry out supporting to excavation slope and support (32) at footing position install lock pin, lock pin supports (32) and should be arranged in more than plate (19) and meet the lateral stressed balance requirement of pile body;
Step 7: remove remainder section of jurisdiction, at upper cut place, " L " shaped cast iron arch springing beam (7) be installed and weld with cast iron arch springing beam set by wall column position, rectangular steel plates is installed at lower cut place, weld with wall column place rectangular steel plates (6), complete building of whole base arrangement, at upper and lower opening place, section of jurisdiction, construct coupling beam between wall column (31), apply building and build waterproof concrete with waterproof outside upper node of opening section of jurisdiction upper and lower otch node;
Step 8: remove the interim inner support in section of jurisdiction (26), inverted arch (9) structure of constructing in shield tunnel;
Step 9: remove temporary steel support (28) between wall column, construct station bottom side wall (18), central post (16), plate (19) and platform slab (30) in construction;
Step 10: construct upper strata, station side wall (20), central post (21) and top board (22), forms main body station; The backfill top board top soil body (23), recovers road surface (1).
2. a kind of cut and cover tunneling method digging station on Subway Tunnel shield tunnel basis according to claim 1, it is characterized in that: in described step one, described space enclosing structure A (2) adds water-stop curtain or continuous underground wall structure for campshed, build Guan Liang (3) at space enclosing structure A (2) top, Guan Liang (3) elevation of top is equal with ground (1) absolute altitude.
3. a kind of cut and cover tunneling method digging station on Subway Tunnel shield tunnel basis according to claim 1, it is characterized in that: in described step 2, in described running tunnel AT STATION, shield duct piece (4) is installed, the shield duct piece (4) installed is straight joint splicing, and the hoop strengthened between section of jurisdiction connects; At shield duct piece (4) the inside erection interim inner support in section of jurisdiction (26), the interim inner support (26) of setting up is for convenience of the gate type support structural system of construction.
4. a kind of cut and cover tunneling method digging station on Subway Tunnel shield tunnel basis according to claim 1, it is characterized in that: in described step 4, described light section transverse passage-way (27), itself and Lin Jie position, section of jurisdiction should arrange between wall column construction working, workplace elevation of top should higher than wall column elevation of top 20 ~ 30cm, transverse passage-way elevation of bottom should be no less than wall column elevation of bottom, and its excavation width is more than or equal to the width of a wall column; The uplift pile (24) of constructing in described transverse passage-way (27), its ground stabilization intensity should meet base bearing capacity examination criteria.
5. a kind of cut and cover tunneling method digging station on Subway Tunnel shield tunnel basis according to claim 1, it is characterized in that: in described step 5, described space enclosing structure B (13) is underground continuous wall-enclosure structure; Coupling beam (14) between described space enclosing structure, its elevation of top is not above the ground level absolute altitude; Described space enclosing structure B (13) bottom is connected with the waterproof concrete (8) of building in " L " shaped cast iron arch springing beam (7).
6. a kind of cut and cover tunneling method digging station on Subway Tunnel shield tunnel basis according to claim 1, it is characterized in that: in described step 7, described " L " shaped cast iron arch springing beam (7) and rectangular steel plates (6) should be fastenedly connected with section of jurisdiction reserved steel bar and built-in fitting.
7. a kind of cut and cover tunneling method digging station on Subway Tunnel shield tunnel basis according to claim 1, it is characterized in that: in described step 8, described in inverted arch (9) height of the building design height that meets gauge requirements and wall column (5) when normally will run by train set.
8. a kind of cut and cover tunneling method digging station on Subway Tunnel shield tunnel basis according to claim 1, it is characterized in that: in described step 9, described central post (16) is concrete filled steel tube central post.
9. a kind of cut and cover tunneling method digging station on Subway Tunnel shield tunnel basis according to claim 1, is characterized in that: in described step 10, and its form of structure of described main body station is the double-deck Metro Station Structure system of freely-supported framed wall pillar.
CN201510443110.XA 2015-07-26 2015-07-26 Open excavation construction method for expanding excavation of station on metro interzone shield tunnel foundation Expired - Fee Related CN105064397B (en)

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CN110424398A (en) * 2019-07-03 2019-11-08 中铁一局集团厦门建设工程有限公司 Across existing shield section open-cut engineering method in zero distance
CN110593900A (en) * 2019-08-26 2019-12-20 中铁三局集团有限公司 Construction method for close-range superposed shield interval of open-cut tunnel in spring development urban area
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CN103277110A (en) * 2013-05-13 2013-09-04 中铁十四局集团有限公司 Construction method of overlapped shield tunnel
CN103266896A (en) * 2013-05-24 2013-08-28 上海市城市建设设计研究总院 Construction method for shield tunneling machine retaining structure taking position firstly and being constructed secondly and for shield shaft excavation

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CN105862914A (en) * 2016-04-18 2016-08-17 西南交通大学 Method for obstructing influences of additional load on ground on lower close-spaced tunnel
CN105862914B (en) * 2016-04-18 2018-03-09 西南交通大学 A kind of method separated ground additional load and influenceed on bottom proximity tunnel
CN108951652A (en) * 2018-08-08 2018-12-07 武岳 Tunnel immediately adjacent to bridge section deep foundation pit supporting structure and construction method
CN109183848A (en) * 2018-08-10 2019-01-11 广东省建工设计院有限公司 A kind of Tunnel Design and building method
CN109183848B (en) * 2018-08-10 2019-06-21 广东省建工设计院有限公司 A kind of Tunnel Design and building method
CN110424398A (en) * 2019-07-03 2019-11-08 中铁一局集团厦门建设工程有限公司 Across existing shield section open-cut engineering method in zero distance
CN110593900A (en) * 2019-08-26 2019-12-20 中铁三局集团有限公司 Construction method for close-range superposed shield interval of open-cut tunnel in spring development urban area
CN112252330A (en) * 2020-10-16 2021-01-22 安徽省交通建设股份有限公司 Safety protection system for excavation of existing line subway tunnel by foundation pit and construction method
CN113027495A (en) * 2021-05-26 2021-06-25 中国铁路设计集团有限公司 Underground excavation large-span station construction method implemented by interval tunnel organization
CN113027495B (en) * 2021-05-26 2021-07-23 中国铁路设计集团有限公司 Underground excavation large-span station construction method implemented by interval tunnel organization

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