CN105089670B - Construction method for enlarging and excavating subway station on basis of parallel interval shield tunnel - Google Patents

Construction method for enlarging and excavating subway station on basis of parallel interval shield tunnel Download PDF

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CN105089670B
CN105089670B CN201510443084.0A CN201510443084A CN105089670B CN 105089670 B CN105089670 B CN 105089670B CN 201510443084 A CN201510443084 A CN 201510443084A CN 105089670 B CN105089670 B CN 105089670B
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jurisdiction
station
column
construction
shield
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CN105089670A (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

The invention relates to a construction method for enlarging and excavating a subway station on the basis of a parallel interval shield tunnel. The station structure formed through enlarging and excavation is in a form of a simple support framework wall column type double-layer subway station; piles and a water stop heavy curtain or an underground continuous wall are used for blocking soil and water; the lateral deformation of soil bodies is resisted; a duct piece temporary supporter is erected in a station interval tunnel; after the excavation is performed to the bottom of a foundation pit, partial shield duct pieces are removed under the protection of a duct piece inner supporter and a temporary steel supporter between the duct pieces; bottom plates are connected with the bottoms of wall columns; connecting beams between the wall columns are stably and firmly connected with the duct pieces; waterproof treatment and connection between the wall columns and the duct pieces are performed; and a sealed stress system is formed. A construction main body provides a vertical support system for an excavation space by using constructed middle vertical posts, side walls, the wall columns and a connecting beam system between the wall columns. The method is reasonable and feasible; the operability is high; after the method is applied, huge economic benefits, social benefits and environment benefits can be brought; and important engineering application values and development prospects are realized.

Description

One kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel
Technical field
The present invention relates to a kind of structure and construction method that subway station is digged on the basis of Parallel Interval shield tunnel, category In technical field of rail traffic.
Background technology
In the middle of numerous subway construction constructions, " shield method " is very fast, right with its working security height, speed of application The features such as surrounding environment influence is relatively small has obtained increasingly being widely applied in subway construction.However, conventional at home Interval shield construction in the middle of, the simple single running tunnel construction of form of fracture is only limitted to the use of shield, is being run into Shield miss the stop problem when, often first shield is disassembled, is hung out from current shield well, then proceeded to another shield well, Again shield is re-assemblied, is constructed;Or in advance station is digged, the width at station and bottom are enlarged, so Missed the stop shield dilatory using dilatory equipment afterwards.No matter two kinds of modes of missing the stop can all cause Suporting structure from for which angle Utilization ratio is substantially reduced, and greatly shortens the disposable continuous driving distance of shield method.According to Beijing at present on several ground built Shield construction present situation statistics on iron wire road, the shield machine of a practice of construction remove the time of its work holdup in the interval, and which is applied The work non-propulsion activity duration accounts for the 52.7% of total construction propulsion activity duration, and these non-propulsion constructions mainly exist including shield machine The construction of shield well when missing the stop, the assembling of going into the well of shield machine, disintegrate, hang out, transition, turn around, it is dilatory miss the stop, if again plus Work holdup situation of the upper shield machine in interval construction, the practice of construction speed of shield machine can be slower, and its utilization rate will be lower.This Outward, as present shield construction causes shield machine in construction period very flexible, its dismounting group repeatedly unloads dilatory missing the stop Etc. the service life of shield machine for substantially reducing.Meanwhile, launching shaft, received well, the construction of the well that turns around and shield machine Disintegrate, hang out, the extra operating expenses caused by transition etc., make the engineering cost cost in shield construction per km compared with shield The expense that machine is normally advanced is increased up to nearly 10% or so;And for the dilatory of shield machine misses the stop, be related to intensification and widen station The extra charge brought, increases about 6%~8% per km.It can be seen that, the non-propulsion how effectively reduced in shield construction is made Industry construction is the key point of the utilization ratio problem for improving shield machine.
The content of the invention
Based on the problems referred to above, the present invention proposes a kind of structure that subway station is extended on the basis of parallel shield tunnel and applies Work method, its version are freely-supported framed wall pillar bilayer Metro Station Structure system.Which adopts double building enclosures to be kept off Native dash;Section of jurisdiction supporting is carried out using section of jurisdiction inner support system, unnecessary section of jurisdiction is removed, and utilize rectangular steel plates and " L " Shaped cast ferrum arch springing beam carries out longitudinal restraint to section of jurisdiction;Excavation construction is carried out using cut and cover method to station agent structure, base is excavated Behind the bottom of hole, segmentation excision is carried out to section of jurisdiction, apply coupling beam and neutral column foundation etc. between base plate, wall column, wall column, and carry out section of jurisdiction The connecting node of coupling beam between wall column and section of jurisdiction and wall column;By the use of wall column system, side wall, central post constructed etc. as main body The vertical supporting system of structure, by the use of the base plate constructed, middle plate, top board and cross-brace beam laterally propping up as agent structure Support body system.Its main purpose be a kind of underground railway engineering of employing shield construction is provided in build the new work of subway station Skill, new method, to reduce the non-propulsion operation in the middle of shield-tunneling construction, improve the utilization ratio of Suporting structure.It is mainly used in solving Under prevailing conditions, interval shield (refers to a diameter of 6m of Suporting structure for subway sectional tunnel or so, it is impossible to excavate institute using which The single shield tunnel enlarging subway station for being formed) non-propulsion operation is excessive in the middle of tunnel enlarging metro station construction, and shield sets The low problem of standby service efficiency.
To achieve these goals, the technical solution used in the present invention is:
Step one:Building enclosure A construct in the range of subway station (as campshed plus water-stop curtain or underground are continuous being planned to build Wall), Guan Liang is poured at the top of building enclosure A and in Guan Liang near the reserved sufficient length reinforcing bar in station side, its Guan Liang elevation of top Should be equal with ground elevation.The building-in depth of building enclosure should meet the requirement of stability in the large and Antiseepage stability;
Step 2:Subway sectional tunnel is applied using Suporting structure, duct pieces of shield tunnel is installed in running tunnel AT STATION, The interim inner support system in section of jurisdiction is set up inside section of jurisdiction, the version of inner support system is gate type support structure, for ease of applying For the sake of work and safety, each interim inner support system width is a width of preferably with half section of jurisdiction, each endless tube piece construction period, it is ensured that At least semi-ring section of jurisdiction is under the support of inner support system, and is connected with longitudinal bracing rod member between adjacent interim inner support system Connect;
Step 3:Grouting and reinforcing is carried out to the soil body above section of jurisdiction, excavation of foundation pit is constructed in the range of excavation of foundation pit is drafted and is enclosed Protection structure B, and building enclosure B is attached with building enclosure A with coupling beam;
Step 4:Inside excavation pit the soil body to section of jurisdiction along short transverse centre position, in digging process, in order to keep base The stability of hole side slope, carries out supporting and sets up lock foot in footing position supporting using compound soil nail support technology side slope, be Avoid impacting construction, lock foot supports and should be located at more than middle plate and meet the lateral stressed requirement of pile body;
Step 5:The outer wall punching in section of jurisdiction, sets up section of jurisdiction temporary steel support, bracing members end and pipe along station longitudinal divisionses Piece inwall connects;
Step 6:Continue to excavate the soil body until design of foundation pit absolute altitude, dismounting need to pour the unnecessary section of jurisdiction in wall column position, using square At shape steel plate and lower cut, the reserved steel bar and built-in fitting of section of jurisdiction is attached, with " L " shaped cast ferrum arch springing girder construction and upper cut The reserved steel bar and built-in fitting of place section of jurisdiction is attached, so that longitudinal restraint is carried out to section of jurisdiction at upper cut, and in cast iron arch springing beam Water-proof concrete is poured between section of jurisdiction carries out waterproof;
Step 7:Uplift pile, station base arrangement and wall column structure are constructed, wall column and the upper and lower incision in opening section of jurisdiction is applied Node, pours both walls column braces crossbeam, applies wall column and crossbeam node, between the correspondence wall column of both sides sets up temporary steel Support.Together with station base plate is poured with wall column bottom and while pour station agent structure neutrality column foundation, neutral column foundation two Side is closely connected with base plate and reserved central post bottom cup-shaped recess and node connector;
Step 8:Section of jurisdiction temporary steel support is removed, remainder section of jurisdiction is extractd, " L " shaped cast ferrum arch is installed at upper cut Foot beam is simultaneously welded with arch springing beam set by wall column position, and rectangular steel plates welding at rectangular steel plates, with wall column is installed at lower cut, At the upper and lower opening of section of jurisdiction, coupling beam structure between wall column is constructed, apply constructing and in upper node for the opening upper and lower otch node in section of jurisdiction Outside pours water-proof concrete with waterproof;
Step 9:The interim inner support system in section of jurisdiction is removed, inverted arch structure of constructing in shield tunnel;
Step 10:Temporary steel support between wall column is removed, station bottom side wall, central post is constructed, is constructed middle plate and platform slab;
Step 11:Remove lock foot to support, construct station upper strata side wall, central post and top board.The backfill top board top soil body, Recover road surface.
Beneficial effect
A kind of structure and construction party that subway station is digged on the basis of Parallel Interval shield tunnel proposed by the invention Method, the non-propulsion operation being effectively reduced in shield-tunneling construction, substantially increases the efficiency of construction of shield-tunneling construction, has been both shield machine Long distance driving provide condition, the also flexible selection for interchange of position provides possibility.Meanwhile, using double building enclosures, Both the stability in the large of main structure body had been ensure that, hidden potential safety hazard in work progress had been also been removed.Rectangular steel plates and " L " The application of shaped cast ferrum arch springing beam not only serves the effect of longitudinal restraint to the section of jurisdiction at opening, also so that section of jurisdiction and wall column and pipe Between piece and wall column, the connecting node stress of coupling beam is more reasonable, and water-proofing treatment is simpler easy.Station main body adopts cut and cover method Construction, construction is simple, quick, economical, safety, has added cross-brace beam between wall, more preferably can ensure between node wall column structure and Stratum lateral stability.Rationally, construction is reliably easy for the technology of the present invention, and stress system conversion is simple clearly, and quality is easy to Control, is thoroughly changed the conventional program that underground railway is built, and its construction application will bring huge economic benefit, social benefit And environmental benefit.
Description of the drawings
Fig. 1 is the subway station standard section profile digged on the basis of Parallel Interval shield tunnel of the present invention, Fig. 2 For freely-supported framed wall pillar bilayer subway station three-dimensional structure diagram.
Fig. 3~Figure 13 is each construction way figure that Parallel Interval shield tunnel of the present invention digs subway station.Wherein, Fig. 3 For bored pile (wall), building enclosure 1 and Guan Liang are constructed;Fig. 4 is that shield-tunneling construction is interval by station, and running tunnel AT STATION Interior placement shield duct piece;Fig. 5 is the installation inner support system in duct pieces of shield tunnel;Fig. 6 is grouting and reinforcing section of jurisdiction upper soil horizon And building enclosure 2 is constructed, coupling beam connection is carried out to building enclosure 1 and building enclosure 2 at the Guan Liang of top;Fig. 7 is to station model Enclose interior foundation ditch to be excavated, the supporting when excavating, lock foot is constructed in footing position and supported;Fig. 8 excavates the soil body to shield for continuation Section of jurisdiction is punched along short transverse centre position, outside section of jurisdiction and sets up section of jurisdiction temporary steel support, and Fig. 9 is set to foundation ditch to excavate the soil body Meter absolute altitude, dismounting need to pour the unnecessary section of jurisdiction in wall column position and install rectangular steel plates and " L " shaped cast ferrum arch springing beam, pour building waterproofing coagulation Soil carries out waterproof.Figure 10 sets up temporary steel support between wall column, pours bottom of foundation ditch uplift pile to construct wall column structure, constructs Base plate, neutral column foundation.Remove remaining unnecessary section of jurisdiction, carry out longitudinal restraint to incision section of jurisdiction, and construct between wall column coupling beam with Otch section of jurisdiction is attached, and applies the upper lower node between wall column and section of jurisdiction, pours the cross-brace beam of both walls intercolumniation;Figure 11 To remove section of jurisdiction inner support system, inverted arch structure is poured inside section of jurisdiction;Figure 12 is temporary steel support and section of jurisdiction between dismounting wall column Temporary steel support, constructs bottom side wall, center pillar and middle plate, platform slab;Figure 13 pours top to construct station hall layer side wall and central post Hardened structure, the backfill top board top soil body.
In figure, 1, road surface, 2, building enclosure A, 3, Guan Liang, 4, shield duct piece, 5, wall column, 6, rectangular steel plates, 7, " L " shaped cast Ferrum arch springing beam, 8, water-proof concrete, 9, inverted arch, 10, base plate, 11, neutral column foundation, 12, grouting and reinforcing soil layer, 13, go along with sb. to guard him knot Structure B, 14, coupling beam, 15, anchor pole, 16, bottom central post, 17, cross-brace beam, 18, bottom side wall, 19, middle plate, 20, upper layer side Wall, 21, top layer central post, 22, top board, 23, backfill, 24, uplift pile, 25, Guan Liang, 26, interim inner support, 27, section of jurisdiction faces When bracing members, 28, temporary steel support, 29, excavation of foundation pit steel shotcrete support, 30, platform slab, coupling beam between 31, wall column, 32, lock foot Support, 33, soil nailing.
Specific embodiment
As shown in figures 1-13, two across subway station embodiment of shallow embedding bilayer under a urban road of the invention, adopts A kind of construction that subway station is digged on the basis of Parallel Interval shield tunnel of the present invention is applied, and its agent structure is by existing Pour between reinforced concrete floor 10, middle plate 19, top board 22, bottom side wall 18, upper strata side wall 20, wall column 5, shield duct piece 4, wall column Cross-brace beam 17, bottom central post 16, top layer central post 21 constitute (its structure composition is as shown in Figure 1), its structure top earthing Thickness 5.5m, excavated section size are 12m × 20.5m.With reference to accompanying drawing, the construction way of the present invention is made further specifically It is bright.
The construction that subway station is digged on the basis of Parallel Interval shield tunnel its construction way of this example is:
Step one:Building enclosure A2 construct in the range of subway station (as campshed plus water-stop curtain or underground are continuous being planned to build Wall), Guan Liang 3 is poured at the top of building enclosure A2 and in Guan Liang 3 near the reserved sufficient length reinforcing bar in station side, at the top of its Guan Liang 3 Absolute altitude should be equal with 1 absolute altitude of ground.The building-in depth of building enclosure A2 should meet the requirement of stability in the large and Antiseepage stability;
Step 2:Subway sectional tunnel is applied using Suporting structure, shield duct piece 4 is installed in running tunnel AT STATION, The interim inner support 26 in section of jurisdiction is set up inside shield duct piece 4, is connected with longitudinal bracing rod member between adjacent interim inner support system;
Step 3:Grouting and reinforcing is carried out to the soil body above section of jurisdiction, excavation of foundation pit is constructed in the range of excavation of foundation pit is drafted and is enclosed Protection structure B13, and building enclosure B13 is attached with building enclosure A2 with coupling beam 14;
Step 4:Inside excavation pit the soil body to section of jurisdiction along short transverse centre position, in digging process, in order to keep base The stability of hole side slope, carries out supporting and in footing position rack using the anchor pole 15 in composite soil nailing, 33 side slope of soil nailing If lock foot supports 32, in order to avoid impacting to construction, lock foot supports 32 should be located at middle plate more than 19 and to meet pile body horizontal Force request;
Step 5:Punching in 4 outer wall of shield duct piece, section of jurisdiction temporary steel support 27 being set up along station longitudinal divisionses, section of jurisdiction is faced When 27 end of bracing members be connected with shield duct piece inwall;
Step 6:Continue to excavate the soil body until design of foundation pit absolute altitude, dismounting need to pour the unnecessary section of jurisdiction in wall column position, using square At shape steel plate 6 and lower cut, the reserved steel bar and built-in fitting of section of jurisdiction is attached, with 7 structure of " L " shaped cast ferrum arch springing beam with above cut The reserved steel bar and built-in fitting of Kou Chu sections of jurisdiction is attached, so that longitudinal restraint is carried out to section of jurisdiction at upper cut, and in " L " shaped cast ferrum Water-proof concrete is poured between arch springing beam 7 and shield duct piece 4 carries out waterproof;
Step 7:Uplift pile 24, station base plate 10 and wall column structure 5 are constructed, wall column 5 and the upper and lower otch in opening section of jurisdiction is applied Place's node, pours both walls column braces crossbeam 17, applies wall column 5 and 17 node of crossbeam, sets up between the correspondence wall column of both sides Temporary steel support 28.Together with station base plate 10 is poured with 5 bottom of wall column and while pour station agent structure neutrality column foundation 11,11 both sides of neutral column foundation are closely connected with base plate 10 and reserved central post bottom cup-shaped recess and node connector;
Step 8:Section of jurisdiction temporary steel support 27 is removed, remainder section of jurisdiction is extractd, " L " shaped cast ferrum is installed at upper cut Arch springing beam 7 is simultaneously welded with arch springing beam set by wall column position, and rectangular steel plates weldering at rectangular steel plates, with wall column is installed at lower cut Connect, at the upper and lower opening of section of jurisdiction, construct 31 structure of coupling beam between wall column, apply the upper and lower otch node in opening section of jurisdiction and outside upper node Side pours water-proof concrete with waterproof;
Step 9:The interim inner support 26 in section of jurisdiction is removed, 9 structure of inverted arch of constructing in shield tunnel;
Step 10:Temporary steel support 28 between wall column is removed, station bottom side wall 18, central post 16 is constructed, is constructed middle plate 19 And platform slab 30;
Step 11:Remove lock foot and support 32, construct station upper strata side wall 20, central post 21 and top board 22.Backfill top board Top backfill 23, recovers road surface 1.
Step 12:The construction of this job step is completed, next step construction is carried out.
Building enclosure A2 adds water-stop curtain or continuous underground wall structure for campshed, and hat is poured at the top of building enclosure A2 Beam 3,3 elevation of top of Guan Liang are equal with 1 absolute altitude of ground.Building enclosure A2 building-in depth should meet stability in the large and Antiseepage stability Property require;
Shield duct piece external diameter is 6m or so, it is impossible to extend subway station using single shield tunnel.
Shield duct piece 4 is installed in the running tunnel AT STATION, the shield duct piece 4 installed splices for straight joint, and strengthens Ring connection between section of jurisdiction;
The interim inner support 26 in section of jurisdiction is set up inside shield duct piece 4, the interim inner support 26 for being set up is for convenience of construction Gate type support structural system.For the sake of construction and safety, each 26 width of interim inner support is a width of preferably with half section of jurisdiction, often One endless tube piece construction period, it is ensured that at least semi-ring section of jurisdiction is under the support of inner support system, and adjacent interim inner support Connected with longitudinal bracing rod member between system;
Building enclosure B13 is underground continuous wall-enclosure structure;
Described to carry out grouting and reinforcing to 4 top soil layer of shield duct piece, its reinforcing scope is not done depending on concrete soil body condition Concrete norm.Coupling beam 14 between the building enclosure, its elevation of top are not higher than ground elevation.
The rectangular steel plates 6, its longitudinal stretching rigidity are sufficiently large, with constrain in the demolishing process of section of jurisdiction occur longitudinal direction from Dissipate;" L " shaped cast ferrum arch springing beam 7 should have enough bending stiffnesses in addition to longitudinal stretching rigidity is met, also, to meet connection stiffness Demand.
" L " the shaped cast ferrum arch springing beam 7 should be fastenedly connected with section of jurisdiction reserved steel bar and built-in fitting with rectangular steel plates 6.
The uplift pile 24 constructed, its foundation stabilization intensity should meet base bearing capacity examination criteria;It is described to pour 9 height of inverted arch meets gauge requirement and the design height setting of wall column 5 when will normally run by train;
The central post 16 is concrete filled steel tube central post.
Described its version of main body station is freely-supported framed wall pillar bilayer Metro Station Structure system.
Be more than the present invention an exemplary embodiments, the present invention enforcement not limited to this.

Claims (9)

1. one kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel, it is characterised in that:Specific construction is walked Suddenly it is,
Step one:Building enclosure A (2) construct in the range of subway station being planned to build, pour at the top of building enclosure A (2) Guan Liang (3) and In Guan Liang (3) near the reserved sufficient length reinforcing bar in station side, its Guan Liang (3) elevation of top should be equal with road surface (1) absolute altitude;Enclose The building-in depth of protection structure A (2) should meet the requirement of stability in the large and Antiseepage stability;
Step 2:Subway sectional tunnel is applied using Suporting structure, shield duct piece (4) is installed AT STATION, in shield in running tunnel The interim inner support (26) in section of jurisdiction is set up inside structure section of jurisdiction (4), the version of interim inner support (26) is gate type support structure;
Step 3:Grouting and reinforcing is carried out to the soil body above section of jurisdiction, excavation of foundation pit is constructed in the range of excavation of foundation pit is drafted and is gone along with sb. to guard him knot Structure B (13), and building enclosure B (13) is attached with building enclosure A (2) with coupling beam (14);
Step 4:Inside excavation pit the soil body to section of jurisdiction along short transverse centre position, in digging process, in order to keep foundation ditch side The stability on slope, carries out supporting and in footing position rack using the anchor pole (15) in composite soil nailing, soil nailing (33) side slope If lock foot supports (32), in order to avoid impacting to construction, lock foot supports (32) should be located at more than middle plate (19) and meet stake The lateral stressed requirement of body;
Step 5:Punching in shield duct piece (4) outer wall, section of jurisdiction temporary steel support (27) being set up along station longitudinal divisionses, section of jurisdiction is faced When bracing members (27) end be connected with shield duct piece (4) inwall;
Step 6:Continue to excavate the soil body until design of foundation pit absolute altitude, dismounting need to pour the unnecessary section of jurisdiction in wall column (5) position, using square At shape steel plate (6) and lower cut, the reserved steel bar and built-in fitting of section of jurisdiction is attached, with " L " shaped cast ferrum arch springing beam (7) structure with At upper cut, the reserved steel bar and built-in fitting of section of jurisdiction is attached, so that longitudinal restraint is carried out to section of jurisdiction at upper cut, and in " L " shape Water-proof concrete (8) is poured between cast iron arch springing beam (7) and shield duct piece (4) carries out waterproof;
Step 7:Uplift pile (24), base plate (10) and wall column (5) are constructed, wall column (5) and the upper and lower incision section in opening section of jurisdiction is applied Point, pours both walls intercolumniation cross-brace beam (17), applies wall column (5) and cross-brace beam (17) node, in both sides correspondence wall Temporary steel support (28) is set up between post;Together with base plate (10) is poured with wall column (5) bottom and while pour station body junction Structure neutrality column foundation (11), neutral column foundation (11) both sides be closely connected with base plate (10) and reserve central post bottom cup-shaped recess and Node connector;
Step 8:Section of jurisdiction temporary steel support (27) is removed, remainder section of jurisdiction is extractd, " L " shaped cast ferrum arch is installed at upper cut Foot beam (7) is simultaneously welded with " L " shaped cast ferrum arch springing beam set by wall column position, is installed at rectangular steel plates, with wall column at lower cut Rectangular steel plates (6) are welded, and at the upper and lower opening of section of jurisdiction, construct coupling beam between wall column (31) structure, apply the upper and lower otch in opening section of jurisdiction Node is constructed and pours water-proof concrete with waterproof on the outside of upper node;
Step 9:The interim inner support (26) in section of jurisdiction is removed, inverted arch (9) structure of constructing in shield tunnel;
Step 10:Temporary steel support (28) between wall column is removed, station bottom side wall (18), central post (16) is constructed, is constructed middle plate And platform slab (30) (19);
Step 11:Remove lock foot and support (32), construct station upper strata side wall (20), central post (21) and top board (22);Backfill The backfill (23) on top board top, recovers road surface (1).
2. one kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel according to claim 1, and which is special Levy and be:In the step one, building enclosure A (2) adds water-stop curtain or continuous underground wall structure for campshed, is going along with sb. to guard him knot Guan Liang (3) is poured at the top of structure A (2), Guan Liang (3) elevation of top is equal with road surface (1) absolute altitude;Building enclosure A (2) building-in depth should Meet stability in the large and Antiseepage stability is required.
3. one kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel according to claim 1, and which is special Levy and be:In the step 2, the Shield, it is characterised in that its section of jurisdiction external diameter is 6m or so, it is impossible to using single One shield tunnel extends subway station;The shield duct piece (4) installed splices for straight joint, and strengthens the connection of the ring between section of jurisdiction; The interim inner support (26) for being set up is for convenience of the gate type support structural system constructed.
4. one kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel according to claim 1, and which is special Levy and be:In the step 3, building enclosure B (13) is underground continuous wall-enclosure structure;To necromancer on shield duct piece (4) Layer carries out grouting and reinforcing;Coupling beam (14) between the building enclosure, its elevation of top are not higher than grade elevation.
5. one kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel according to claim 1, and which is special Levy and be:In the step 6, the rectangular steel plates (6), its longitudinal stretching rigidity are sufficiently large, to constrain section of jurisdiction demolishing process Middle generation longitudinal dispersion;" L " shaped cast ferrum arch springing beam (7) should have enough bending stiffnesses in addition to longitudinal stretching rigidity is met, also, To meet connection stiffness demand;" L " shaped cast ferrum arch springing beam (7) and rectangular steel plates (6) should be with section of jurisdiction reserved steel bars and pre-buried Part is fastenedly connected.
6. one kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel according to claim 1, and which is special Levy and be:In the step 7, the uplift pile (24) constructed, its foundation stabilization intensity should meet base bearing capacity detection mark It is accurate.
7. one kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel according to claim 1, and which is special Levy and be:In the step 9, the inverted arch (9) for pouring meets gauge requirement and wall column (5) when highly will normally run by train Design height setting.
8. one kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel according to claim 1, and which is special Levy and be:In the step 10 and 11, the central post is concrete filled steel tube central post.
9. one kind digs Construction Method of Metro Station on the basis of Parallel Interval shield tunnel according to claim 1, and which is special Levy and be:In the step 11, its version of main body station is freely-supported framed wall pillar bilayer Metro Station Structure system.
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