CN103590839B - Subway station cast-in-place structural portal support construction technology - Google Patents
Subway station cast-in-place structural portal support construction technology Download PDFInfo
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- CN103590839B CN103590839B CN201310598592.7A CN201310598592A CN103590839B CN 103590839 B CN103590839 B CN 103590839B CN 201310598592 A CN201310598592 A CN 201310598592A CN 103590839 B CN103590839 B CN 103590839B
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Abstract
Subway station cast-in-place structural portal support construction technology belongs to subway work field.In negative three layers of station, plate is built and is adopted portal support as support system, described portal support is: three layers of rail capable zone centerline each 2.15m in both sides are born at station, on base plate, 4.905m scope adopts portal support, and portal support is made up of 1 root post, 1 crossbeam, 2 diagonal braces and pre-embedded steel slab; Crossbeam adopts above-mentioned pre-embedded steel slab and station structure side wall to be connected and fixed, and column is connected with bed bolt; Column is connected with transom bolt; Together, multiple tracks portal support is by the fastener for connection along orbital direction layout for portal support direction along ng a path 90cm.This support system, under the prerequisite of safety, for assembling within the scope of the district of Gui Hang AT STATION supporting after shield structure provides the usefull space, reaches the object of reduction of erection time, makes the assembling of going into the well of shield structure, debugs and provide the station structure of the condition of starting to construct to become possibility simultaneously.Engineering shortens the duration of 30%, saves the cost of about 10%.
Description
Technical field
To the present invention relates within the scope of Gui Hang district, station, station, subway drum tower street plate support system in cast-in-place structural and adopt portal support construction technology.The interval left line shield structure in station, An Deli North Street ~ station, drum tower street is interval to be started and tunneling construction by station, drum tower street the North shield structure well.The negative three left lines in Ceng Guihang district in station need provide supporting assembling space after the long shield machine of 80m, and in this layer, plate support system adopts portal support.
Background technology
At present, in railway traffic engineering subway work, in cast-in-situ concrete, plate support system generally adopts all round victory scaffold technique.But all round victory scaffold cannot be removed before structure all completes, inside, station is caused to carry out other operations.At present because subway work place is limited, interval shield structure often starts from station, supporting after shield structure must assembled inside AT STATION, for reaching shield structure assembling condition early, accelerating construction progress, and form a kind of brand-new subway station cast-in-place structural portal support construction technology.
Summary of the invention
Portal support is formed by connecting by high-strength bolt by column, crossbeam and diagonal brace, and crossbeam is connected firmly by pre-embedded steel slab and agent structure side wall, and column is fixed on structure base slab by high-strength bolt.Portal support headroom 4.3m × 4.5m, supporting assembling requisite space condition after meeting shield structure.Avoid support system and adopt all round victory scaffold construction, must could assemble the limitation of shield structure after structure all completes and removes.
Subway station cast-in-place structural portal support construction technology, it is characterized in that: in negative three layers of station, plate is built and adopted portal support as support system, described portal support is: three layers of rail capable zone centerline each 2.15m in both sides are born at station, on base plate, 4.905m scope adopts portal support, and portal support is made up of 1 root post, 1 crossbeam, 2 diagonal braces and pre-embedded steel slab; Crossbeam adopts above-mentioned pre-embedded steel slab and station structure side wall to be connected and fixed, and column is connected with bed bolt; Column is connected with transom bolt;
Together, multiple tracks portal support is by the fastener for connection along orbital direction layout for portal support direction along ng a path 90cm.
Further, crossbeam adopts I45 i iron, column to adopt I32 i iron, diagonal brace to adopt I22 i iron.
Further, it is characterized in that: the pre-embedded steel slab that portal support crossbeam adopts 1 piece of 1600 × 500mm × 20mm thick and station structure side wall are connected and fixed, and pre-embedded steel slab is vertically buried underground, and pre-embedded steel slab welds 52 Φ 22 reinforcing bars behind in advance, the long 450mm of every root reinforcing bar.
Further, it is characterized in that: column is connected with base plate and adopts expansion bolt, and every root post 4 expansion bolts, expansion bolt model is M24*200mm.
Further, portal support longitudinally adopts Φ 48 steel pipe as bridging, and the longitudinal 4 ~ 5m of bridging together.
The present invention is supporting assembling space after meeting shield structure, under the prerequisite that ensure that construction safety, not only substantially reduces the engineering time, ensure that the node duration, and ensure that construction quality.
Utilize construction technology of the present invention, tool has the following advantages:
One, ensure that construction quality, provide supporting operation space after shield structure.
Two, save the construction period, make station structure and shield structure interval can operation simultaneously.
Three, structure side wall and base plate add embedded bar and expansion bolt.
Four, entirety accelerates the construction speed of 30%.
Five, the construction cost of about 10% is saved.
Accompanying drawing explanation
Fig. 1 is construction technology figure of the present invention.
In Fig. 2, plate adopts portal support to support scope schematic diagram.
Fig. 3 portal support crossbeam and column connected node schematic diagram.
Fig. 4 portal support column and base plate connected node schematic diagram.
Fig. 5 portal support crossbeam and side wall junction pre-embedded steel slab schematic diagram.
Schematic diagram arranged by the longitudinal bridging of Fig. 6 portal support.
Supporting scope schematic diagram after the inner shield structure of Fig. 7 portal support.
Detailed description of the invention
Illustrate below in conjunction with accompanying drawing:
As shown in Figure 1, the present invention adopts portal support to provide shield structure assembling space bottom plate support system in negative three layers of station, drum tower street, and portal support top adopts steel pipe support, portal support construction length 80 meters, as shown in Figure 2.Specific construction flow process step sequence is:
The first step: portal support design considerations " building structure loading specification " (GB50009-2001), " Code for design of steel structures " (GBJ17-88) carry out Design calcu-lation with the requirement in " concrete structure engineering construction quality accident specification " (GB50204-2002), " building operations fastener type steel pipe scaffold technical specification of security " (JGJ130-2002).According to requiring in " code for acceptance of construction quality of steel structures " (GB50205-2001) and " building operations fastener type steel pipe scaffold technical specification of security " (JGJ130-2002) to construct.Portal support used all appointment be up to the standards producer processing, the scene of being transported to is carried out assembled, reports supervising engineer to a higher authorities for approval use after the assay was approved through quality inspection engineer.
Second step: portal support assembling construction.Assembledly should to carry out on smooth solid ground, through the accurate setting-out of precise engineering surveying instrument, to determine the assembled position of its portal support; Rack beam and column with bolts, as shown in Figure 3.
3rd step: portal support assembling construction.First on base plate, line midline is released by measurement class, measurement is told somebody what one's real intentions are to record and is given site operation team technician in writing, construction corps technician is according to measuring measuring column center line of telling somebody what one's real intentions are, the position of the first door frame portal support is gone out at existing scaffold south unwrapping wire, again according to the spacing of 60cm, by north to the center line adjoining time measuring in the south and go out each portal support; According to center line setting-out bolt hole position, according to the spiro keyhole position of column bottom surface preformed hole junction steel plate, perform supporting expansion bolt at the scene, expansion bolt should keep vertical, as shown in Figure 4.
4th step: install one frames door cribbing every 90cm, middle bracing wire is installed; Before installing, every 60cm controls to measure portal support column base concrete face absolute altitude, according to absolute altitude difference size, carries out cutting or pading plate adjusts; By adjustment after column and steel plate full weld firm; Crossbeam is connected firmly (as shown in Figure 5) by pre-embedded steel slab and agent structure side wall; Ground portal support material use 25t crane is hung in place to installation position, the center line gone out according to measuring by construction corps technician and bolt position in place, carry out temporary support, adjust the verticality of single door frame portal support, put firm wedge at suspension column junction steel plate underlay finally to fix, and electric welding connects.After all portal supports install, outside column, with steel pipe, portal support is longitudinally fixed four roads, arrange by more than bottom steel plate; Both sides arrange bridging, and continuous bridging and ground angle control at 45 ° ~ 60 °; As shown in Figure 6.
5th step: portal support is set up order and is: lay base → perpendicular Pin monolithic door frame column → installations crossbeam → installation lateral connection steel pipe → repeat installation portal support, longitudinal bridging based on this.After portal support installation, the lumps of wood is laid above portal support crossbeam, spacing 90cm, adjacent stent end face is not when same absolute altitude, between the lumps of wood and crossbeam chock plate ensure the lumps of wood and crossbeam closely connected, scaffold support collet is directly over crossbeam, and total sub-semigroup ensures with the lumps of wood on portal support closely connected simultaneously; Establish bridging to extend to base plate outside portal support column, above portal support bridging and crossbeam, scaffold connects into entirety, above crossbeam, increase by one horizontal cross brace bottom scaffold.
6th step: the capable zone position narrow space of plate rail in negative three layers of station, drum tower street, is supporting assembling after meeting shield structure, lays single-line railway in the portal support in agent structure Gui Hang district.Before laying, first carry out land clearing, in track, spacing is 90cm, for equipment (1 battery truck of rear matching operation indispensability, 1 electric locomotive 8.2 meters, 4 slag-soil trucks 7 meters/, 1 swelling navy barrow 5 meters, 1 mortar vehicle 5 meters, 2 segment cars 4 meters /) use, each workshop connecting bridge connects, and is hung in one by one, as shown in Figure 7 at shield structure well by 50t straddle truck.7th step: portal support control stress point.Portal support bolt connectivity robustness: the prestressed size of bolt does not almost affect the prying force effect the etc. when rupture load of bolt, ultimate bending moment and ultimate limit state; The impact of steel column edge of a wing thickness on connection ultimate bending moment, prying force effect is less; Bolt connection meets the demands.Must pad closely knit at the bottom of column: reduce ground pressure, protecting field surface concrete structure etc.; Portal support keeps verticality: portal support is ± 50mm along the perpendicularity deviation of body of wall longitudinal direction, the perpendicularity deviation of portal support transverse direction is ± 20mm, the longitudinal direction and the horizontal vertical missing that often walk portal support are≤2mm, and the top horizontal departure often walking portal support is≤5mm.Outside longitudinal joint steel pipe and portal support column two, the fastener of steel pipe is connected firmly; The fixation of column base plate expansion bolt.
8th step: portal support is removed: the prerequisite work that portal support is removed is that left line shield-tunneling construction is complete, through program manager check and verify confirmation no longer need portal support time, remove plate portal support in negative three layers of station.Remove portal support and report and submit special construction plan to supervising engineer, after supervising engineer checks and approves, can carry out.Remove portal support should meet the following requirements: before 1, removing portal support, the material on portal support should be removed, instrument and foreign material.When removing portal support, should security area be set, sets up caution notice, and be responsible for warning by special messenger.2, the dismounting of portal support, the principle first should torn open by rear dress, from start to dismantle steel pipe bridging, steel pipe horizontal brace, portal support etc.3, workman must stand on the interim scaffold floor arranged and carry out dismounting operation.When 4, dismantling link, first the jam plate on lock and the locking plate had contact with should be gone to enable possition, then start dismounting, inaccurate hard draw, forbids to knock.5, the door frame removed, steel pipe and accessory, the mechanical handling of bundled use or derrick should be sent to ground, prevent collision, forbids throwing.6, horizontal cross bar and bridging etc., can must remove when relevant portal support dismantled by scaffold; 7, workman must stand on the interim scaffold floor arranged and carry out field-strip, and by regulation use safety protective articles; 8, during support removing, the column of dismounting, diagonal brace, stull etc. are hung out foundation ditch with 25t crane, are transported to storehouse by scaffold, the lumps of wood and template above first striking, then striking, column.
Plate support system in negative three layers of station, drum tower street of the present invention is used successfully to instead of all round victory scaffold by portal support, the steric requirements of supporting assembling after meeting shield structure.Portal support is compared with other constructure scheme, and portal support is installed light, flexible, sets up efficiency high, and greatly, bearing capacity is strong for height and level interval adjustable range, and good stability is quick for installation.After concrete construction, stamping die, form removal, to tear frame open also extremely convenient, do not need heavy mechanical equipment, can save a large amount of labour costs, mechanical expense, reduce construction costs, shorten the duration.Be installed to dismounting from portal support, only use 4d, and quality project, be worth similar engineering to be used for reference.
Above portal support construction technology of the present invention, be the exemplary embodiments of this subway station, enforcement of the present invention is not limited thereto.
Claims (4)
1. subway station cast-in-place structural portal support construction technology, it is characterized in that: in negative three layers of station, plate is built and adopted portal support as support system, described portal support is: three layers of rail capable zone centerline each 2.15m in both sides are born at station, on base plate, 4.905m scope adopts portal support, and portal support is made up of 1 root post, 1 crossbeam, 2 diagonal braces and pre-embedded steel slab; Crossbeam adopts above-mentioned pre-embedded steel slab and station structure side wall to be connected and fixed, and column is connected with bed bolt; Column is connected with transom bolt;
Together, multiple tracks portal support is by the fastener for connection along orbital direction layout for portal support direction along ng a path 90cm.
2. station cast-in-place structural portal support construction technology according to claim 1, is characterized in that:
Crossbeam adopts I45 i iron, column to adopt I32 i iron, diagonal brace to adopt I22 i iron.
3. station cast-in-place structural portal support construction technology according to claim 1, is characterized in that: column is connected with base plate and adopts expansion bolt, and every root post 4 expansion bolts, expansion bolt model is M24*200mm.
4. station cast-in-place structural portal support construction technology according to claim 1, is characterized in that: portal support longitudinally adopts Φ 48 steel pipe as bridging, and longitudinally 4 ~ 5m is together for bridging.
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| CN201310598592.7A CN103590839B (en) | 2013-11-25 | 2013-11-25 | Subway station cast-in-place structural portal support construction technology |
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| CN201310598592.7A CN103590839B (en) | 2013-11-25 | 2013-11-25 | Subway station cast-in-place structural portal support construction technology |
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| CN103590839B true CN103590839B (en) | 2016-04-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105672695A (en) * | 2016-01-27 | 2016-06-15 | 上海市基础工程集团有限公司 | Steel structure bracket system for rapid construction of subway station |
| CN110685720B (en) * | 2019-11-18 | 2024-09-20 | 山西省交通科技研发有限公司 | Construction template and construction method for secondary lining of connecting channel in shield tunnel section |
| CN113389562B (en) * | 2020-03-11 | 2022-07-19 | 中国建筑第六工程局有限公司 | Quick starting construction method for shield tunneling machine of subway tunnel |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2385085Y (en) * | 1999-03-04 | 2000-06-28 | 王迺业 | Double adjustable formwork construction lining trolley |
| DE19944317A1 (en) * | 1999-09-15 | 2001-03-22 | Gta Maschinensysteme Gmbh | Cutting chamber at the tunnel cutting face is formed by pressure cushions between the roof shields and the support frames to give a forward movement under pressure without tunnel roof damage |
| CN101509263A (en) * | 2009-03-09 | 2009-08-19 | 上海隧道工程股份有限公司 | Digging method foundation pit structure of steel cover and plate cover, and construction method |
| CN201627588U (en) * | 2010-04-08 | 2010-11-10 | 中国葛洲坝集团股份有限公司 | Device for preventing rollover and displacement of side-top arch formworks of steel mold trolley |
| CN102031978A (en) * | 2010-11-16 | 2011-04-27 | 吕修伦 | Internal drawing tunnel/hole reinforced concrete support-free upright die |
| CN102505706A (en) * | 2011-09-30 | 2012-06-20 | 北京市政建设集团有限责任公司 | Method for building subway station |
| CN202544854U (en) * | 2011-12-09 | 2012-11-21 | 中国建筑第八工程局有限公司 | Lining trolley for subway station |
| CN202611714U (en) * | 2012-04-09 | 2012-12-19 | 中铁二十一局集团第三工程有限公司 | Tunnel assembly type construction trolley without welding |
| CN103375171A (en) * | 2013-07-18 | 2013-10-30 | 中铁隧道集团有限公司 | Counterforce frame in shield hole |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100283525B1 (en) * | 1998-12-31 | 2001-03-02 | 허승조 | How to Install Freestanding Tunnel Formwork |
-
2013
- 2013-11-25 CN CN201310598592.7A patent/CN103590839B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2385085Y (en) * | 1999-03-04 | 2000-06-28 | 王迺业 | Double adjustable formwork construction lining trolley |
| DE19944317A1 (en) * | 1999-09-15 | 2001-03-22 | Gta Maschinensysteme Gmbh | Cutting chamber at the tunnel cutting face is formed by pressure cushions between the roof shields and the support frames to give a forward movement under pressure without tunnel roof damage |
| CN101509263A (en) * | 2009-03-09 | 2009-08-19 | 上海隧道工程股份有限公司 | Digging method foundation pit structure of steel cover and plate cover, and construction method |
| CN201627588U (en) * | 2010-04-08 | 2010-11-10 | 中国葛洲坝集团股份有限公司 | Device for preventing rollover and displacement of side-top arch formworks of steel mold trolley |
| CN102031978A (en) * | 2010-11-16 | 2011-04-27 | 吕修伦 | Internal drawing tunnel/hole reinforced concrete support-free upright die |
| CN102505706A (en) * | 2011-09-30 | 2012-06-20 | 北京市政建设集团有限责任公司 | Method for building subway station |
| CN202544854U (en) * | 2011-12-09 | 2012-11-21 | 中国建筑第八工程局有限公司 | Lining trolley for subway station |
| CN202611714U (en) * | 2012-04-09 | 2012-12-19 | 中铁二十一局集团第三工程有限公司 | Tunnel assembly type construction trolley without welding |
| CN103375171A (en) * | 2013-07-18 | 2013-10-30 | 中铁隧道集团有限公司 | Counterforce frame in shield hole |
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