CN106049531B - High-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction - Google Patents

High-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction Download PDF

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Publication number
CN106049531B
CN106049531B CN201610404918.1A CN201610404918A CN106049531B CN 106049531 B CN106049531 B CN 106049531B CN 201610404918 A CN201610404918 A CN 201610404918A CN 106049531 B CN106049531 B CN 106049531B
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steel plate
chamfering
construction
wood
multicell
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CN106049531A (en
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汪庆豪
陈建
麻玉侠
李立仁
金明春
李立坦
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Rui Construction Group Co., Ltd.
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Rui Construction Group Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/045Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/04Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Sustainable Development (AREA)
  • Foundations (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The present invention relates to a kind of high-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction, include the following steps:1)Basement process 2)Construction of bottom plates, 3)Formwork system location and installation, 4)Side wall is constructed, and 5)Construction of central division wall, 6) top board construction, 7)Evacuation platform is constructed.The present invention high-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction have many advantages, such as structure it is reliable, it is easy for construction, economize on resources.

Description

High-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction
Technical field
The present invention relates to a kind of high-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction, are applicable in frame tunnel Construction, be particularly suitable for the multicell frame constructing tunnel that high-moisture surpasses soft clay area.
Background technology
Underground space development gradually starts upsurge in recent years, and construction of underground structure shows large span, multicell and structure shape The characteristics of formula is complicated.Wenzhou Area is largely Soft Clay, and silt depth is big, moisture content saturation, and foundation capability is low Under, constructional difficulties very big there are difficulty.This just Large Underground main body stay in place form engineering is proposed than previous higher Requirement, underground traffic formwork construction technology is increasingly becoming the core technology of Large Underground main body structure construction.
When the country builds tunnel at present, often using segmented tradition wooden model formwork skill during cut and cover tunneling Art, but the defects of the technology is slow there are speed of application, and form joint is more, and Surface Quality of Concrete is bad.It is mixed further for underground Solidifying soil outside wall, because of formwork narrow space, traditional two-sided formwork support process is difficult with, and traditional split bolt formwork Technology can make wall infiltration phenomenon occur.
In conclusion though existing tunnel can obtain ideal basement process effect under suitable conditions of project natural environment Fruit, but construction procedure is cumbersome, difficulty of construction is big, especially in construction of the reply Wenzhou Area for the high-moisture ultra-soft soil of representative In there are a large amount of shortcomings.In consideration of it, there is an urgent need for inventing, a kind of stable structure, bearing capacity are high, economic benefit is excellent at present High-moisture weak soil box multicell cast in place frame method for tunnel construction, cheap to reach easy for construction, most of component It is reusable, there is certain economic technology benefit.
Invention content
The purpose of the present invention is to provide a kind of high-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction, power The rapid construction in realistic existing multicell frame tunnel, and with outstanding structural stability, reach most of component recycling.
To realize the above-mentioned technical purpose, present invention employs following technical schemes:
High-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction, it is characterised in that include the following steps:
1)Basement process:Uplift pile is set after unwrapping wire(1)And stand column pile(2), the excavation of progress frame tunnel foundation pit, foundation pit Top pours one layer of thin bed course;
2)Construction of bottom plates:Bind baseplate reinforcing bar, pre-buried pvc pipe(6)And nut(7), formwork erection pours bottom plate(3)Concrete, Nut bore is blocked with screw rod in casting process, is extracted after initial set;Chamfering(4)Independent formwork construction, similary pre-buried pvc pipe(6) And nut(7);
3)Formwork system location and installation:In general steel plate(14)With chamfering steel plate(13)Setting montant connecting pin above (17), by general steel plate(14)Pass through vertical recyclable screw rod(12)With bottom plate(3)It is fixedly connected, chamfering steel plate(13)By oblique To recyclable screw rod(5)With chamfering(4)It is fixedly connected;Montant is installed(18), cross bar(19)And Crossing brace(20), montant(18)Bottom Montant connecting pin is inserted at end(17)In;
4)Side wall template construction:Side wall reinforcing bar is bound, bamboo slab rubber is installed(21)Make side template, bamboo slab rubber(21)By secondary stupefied The lumps of wood(22), the main stupefied lumps of wood(23)It reinforces, adjusts adjustable transverse to support(27)Withstand the main stupefied lumps of wood(23), side wall top passes through Setting sockets bar 37 and TRD engineering method stakes(34)Top shaped steel(35)The connection steel bar of upper welding(36)Reinforcement by connection;
5)Mid-board template construction:Mid-board reinforcing bar is bound, in the pre-buried rubber and plastic block in evacuation platform position(30)Connect with lateral Connect muscle(31), installation mid-board bamboo slab rubber 21 makees template, with laterally adjustable section support(27), the secondary stupefied lumps of wood(22), the main stupefied lumps of wood (23)It reinforces, by cross bar(19)With adjustable transverse to support(27)Connection;Screw arbor with nut at both-ends is uniformly arranged on interval wall form (24), Screw arbor with nut at both-ends(24)Pass through double nut(26), Two bors d's oeuveres steel pipe(25)It is fastenedly connected;
6)Top board construction:Top plate bed die is installed, time stupefied lumps of wood is set(22), the main stupefied lumps of wood(23), vertically be adjusted support (28), by montant(18)Upper end and adjustable vertical support(28)Connection;Top plate bed die both sides are overlapped with side wall die head, are tied up Prick roof steel bar, subsequent casting concrete;
7)Evacuation platform is constructed:After mid-board form removal, rubber and plastic block is removed(30), leave embedded link slot(29), in slot It is provided with lateral connection muscle(31), install evacuation platform template(32), by evacuation platform reinforcing bar with lateral connection muscle(31)Binding It is fixed, pour evacuation platform(10).
Further, bottom plate(3)And chamfering(4)In pre-buried pvc pipe(6)And nut(7), bottom plate(3)By can vertically return Receive screw rod(12)Connect general steel plate(14), chamfering(4)Pass through oblique recyclable screw rod(5)Connect chamfering steel plate(13).
General steel plate(14)With chamfering steel plate(13)The equal welding steel connector in edge(15), general steel plate(14)And chamfering Steel plate(13)It is fastened by bolts and is linked to be entirety.
Evacuation platform template(32)Using bulk integral forming steel form, shuttering supporting is had(33).
The present invention has the characteristics that following and advantageous effect:
(1)Using integrated formwork system, construction procedure is optimized, realizes the fast and convenient construction in frame tunnel.
(2)Bottom plate is provided with built-in fitting, connection bottom steel plate and connection formwork system, is also fixed respectively between the steel plate of bottom, is Integral system is linked to be an entirety, has good bearing capacity.
(3)The shaped steel in TRD engineering method stakes is made full use of at the top of side wall, forms the single side formwork knot with good stress-bearing capability Structure, it is easy for construction.
(4)It constructs after evacuation platform, using bulk integral forming steel form, optimizes construction procedure, saved the duration.
Description of the drawings
Fig. 1 is high-moisture ultra-soft soil box multicell cast in place frame tunnel formwork system schematic diagram of the present invention.
Fig. 2 is steel plate joint detail figure in bottom at A in Fig. 1.
Fig. 3 is interval wall form schematic diagram at B in Fig. 1.
Fig. 4 is to be embedded in link slot schematic diagram in Fig. 1 at C.
Fig. 5 is connection figure at the top of side form at D in Fig. 1.
Fig. 6 is evacuation platform formwork schematic diagram.
Fig. 7 is box multicell cast in place frame tunnel structure cross-section diagram.
Fig. 8 is construction flow chart of the present invention.
In figure:1- uplift piles, 2- stand column pile, 3- bottom plates, 4- chamferings, the oblique recyclable screw rods of 5-, 6-PVC pipes, 7- nuts, 8- side walls, 9- mid-boards, 10- evacuation platforms, 11- construction joints, the vertical recyclable screw rods of 12-, 13- chamfering steel plates, 14- ordinary steels Plate, 15- steel plate connectors, 16- top plates, 17- montants connecting pin, 18- montants, 19- cross bars, 20- Crossing braces, 21- bamboo slab rubbers, The 22- stupefied lumps of wood, the stupefied lumps of wood of 23- master, 24- Screw arbor with nut at both-ends, 25- Two bors d's oeuveres steel pipes, 26- double nuts, 27- adjustable transverses to support, The adjustable vertical supports of 28-, the embedded link slots of 29-, 30- rubber and plastic blocks, 31- lateral connection muscle, 32- evacuation platform templates, 33- Shuttering supporting, 34-TRD engineering method stakes, 35- shaped steel, 36- connection steel bars, 37- socket bar.
Specific embodiment
The pile piling technique requirement of cast-in-situ bored pile, the requirement of welding procedure technology, scaffold building in present embodiment Technology requirement etc. repeats no more, and emphasis illustrates high-moisture ultra-soft soil box multicell cast in place frame constructing tunnel of the present invention Embodiment.
Fig. 1 is high-moisture ultra-soft soil box multicell cast in place frame tunnel formwork system schematic diagram of the present invention, and Fig. 2 is Fig. 1 Steel plate joint detail figure in bottom at middle A;Fig. 3 is interval wall form schematic diagram at B in Fig. 1;Fig. 4 is that embedded link slot shows at C in Fig. 1 It is intended to;Fig. 5 is connection figure at the top of side form at D in Fig. 1;Fig. 6 is box multicell cast in place frame tunnel structure cross-section diagram;Fig. 7 is case Type multicell cast in place frame tunnel structure cross-section diagram.
With reference to the high-moisture ultra-soft soil box multicell cast in place frame tunnel formwork system shown in Fig. 1-7, frame tunnel knot Structure is made of uplift pile 1, stand column pile 2, bottom plate 3, side wall 8, mid-board 9, chamfering 4, top plate 16 and evacuation platform 10;Formwork system Including montant 18, cross bar 19, Crossing brace 20, bamboo slab rubber 21, the secondary stupefied lumps of wood 22, the main stupefied lumps of wood 23, adjustable transverse to 27 and of support Adjustable vertical support 28;Bottom plate 3 and chamfering 4 have been respectively fixedly connected with general steel plate 14 and chamfering steel plate 13;In general steel plate 14 and chamfering steel plate 13 be both provided with montant connecting pin 17 above, 18 bottom end of montant is inserted into montant connecting pin 17, upper end and top The adjustable vertical support 28 set in 16 template of plate connects, and 19 both ends of cross bar in 8 template of side wall, 9 template of mid-board with setting Adjustable transverse connected to support 27.
Pre-buried pvc pipe 6 and nut 7 in bottom plate 3 and chamfering 4, bottom plate 3 connect general steel plate by vertical recyclable screw rod 12 14, chamfering 4 connects chamfering steel plate 13 by oblique recyclable screw rod 5.
The equal welding steel connector 15 of general steel plate 14 and 13 edge of chamfering steel plate, general steel plate 14 and chamfering steel plate 13 are logical It crosses bolt fastening and is linked to be entirety.
Frame tunnel both sides are equipped with TRD engineering methods stake 34, and steel bar 36 is welded to connect on the shaped steel 35 of stake top, and connection steel bar 36 is logical It crosses and sockets bar 37 and be fixedly connected with formwork system.
Mid-board 9 is provided with Screw arbor with nut at both-ends 24, and Screw arbor with nut at both-ends 24 is fastenedly connected by double nut 26, Two bors d's oeuveres steel pipe 25.
As shown in figure 8, high-moisture ultra-soft soil box multicell cast in place frame constructing tunnel step is as follows:
1)Basement process:It is set after unwrapping wireUplift pile 1,Stand column pile 2 carries out opening for frame tunnel foundation pit It digs, depth 8m, one layer of thin bed course of 20cm is poured at the top of foundation pit.
2)Construction of bottom plates:Baseplate reinforcing bar is bound, rebar sizes are according to design value, and reasonable Arrangement built-in fitting:Pvc pipe 6(Pipe Diameter 30cm), nut 7(M30), formwork erection pours 3 concrete of bottom plate, base plate thickness 0.5m, with M30 screw rods by spiral shell in casting process Female hole blocks, and is extracted after initial set;4 independent formwork construction of chamfering, chamfering angle size is the equally pre-buried pvc pipes 6 of 500mm*500mm, spiral shell Cap 7.
3)Formwork system location and installation:Montant connecting pin 17 is set on general steel plate 14 and chamfering steel plate 13.Commonly Steel plate 14,15 thickness of chamfering steel plate are 28mm, and general steel plate 14 is fixedly connected by vertical recyclable screw rod 12 with bottom plate 3; Chamfering steel plate 13 is fixedly connected by oblique recyclable screw rod 5 with chamfering 4;Montant 18, cross bar 19, Crossing brace 20, montant are installed 18 are inserted into montant connecting pin 17.
4)Side wall template construction:Side wall reinforcing bar is bound, side template is installed, using bamboo slab rubber 21, template passes through secondary stupefied The lumps of wood 22, the main stupefied lumps of wood 23 are reinforced, and the secondary stupefied lumps of wood, main stupefied lumps of wood monarch are the 100mm*100mm lumps of wood, and the main stupefied lumps of wood adjusts adjustable Lateral support 27 withstands the main stupefied lumps of wood 23, and side wall top sockets bar 38 by setting, with being welded on 34 top shaped steel 35 of TRD engineering methods stake 36 reinforcement by connection of connection steel bar connect.
5)Mid-board template construction:Bind mid-board reinforcing bar, in evacuation platform position pre-buried 30cm*30cm rubber and plastics block 30,Lateral connection muscle 31,Interval wall form is installed(Bamboo slab rubber), equally with it is laterally adjustable section support 27, the secondary stupefied lumps of wood 22, The main stupefied lumps of wood 23 is reinforced, and cross bar 19 is connect with adjustable transverse to support 27;It is evenly arranged with Screw arbor with nut at both-ends 24 simultaneously to reinforce, lead to Cross double nut 26, Two bors d's oeuveres steel pipe 25 is fastenedly connected.
6)Top board construction:Top plate bed die is installed, lower end is provided that time stupefied lumps of wood 22, the main stupefied lumps of wood 23, vertically may be used respectively Support 28 is adjusted, top plate bed die both sides are overlapped with side wall die head, bind roof steel bar, subsequent casting concrete, and thickness is 0.5m。
7)Evacuation platform is constructed:After mid-board form removal, rubber and plastic block 30 is removed, embedded link slot 29 is left, is set in slot There is lateral connection muscle 31, install evacuation platform template, by evacuation platform reinforcing bar with lateral connection muscle banding fixed, it is flat to pour evacuation Platform 10, evacuation platform length are 0.9m.

Claims (4)

1. high-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction, it is characterised in that include the following steps:
1)Basement process:Uplift pile is set after unwrapping wire(1)And stand column pile(2), the excavation of progress frame tunnel foundation pit, foundation pit top Pour one layer of thin bed course;
2)Construction of bottom plates:Bind baseplate reinforcing bar, pre-buried pvc pipe(6)And nut(7), formwork erection pours bottom plate(3)Concrete pours Nut bore is blocked with screw rod in the process, is extracted after initial set;Chamfering(4)Independent formwork construction, similary pre-buried pvc pipe(6)And spiral shell Cap(7);
3)Formwork system location and installation:In general steel plate(14)With chamfering steel plate(13)Setting montant connecting pin above(17), will General steel plate(14)Pass through vertical recyclable screw rod(12)With bottom plate(3)It is fixedly connected, chamfering steel plate(13)It is returned by oblique Receive screw rod(5)With chamfering(4)It is fixedly connected;Montant is installed(18), cross bar(19)And Crossing brace(20), montant(18)Bottom end is inserted into Montant connecting pin(17)In;
4)Side wall template construction:Side wall reinforcing bar is bound, bamboo slab rubber is installed(21)Make side template, bamboo slab rubber(21)Pass through the secondary stupefied lumps of wood (22), the main stupefied lumps of wood(23)It reinforces, adjusts adjustable transverse to support(27)Withstand the main stupefied lumps of wood(23), side wall top passes through setting Socket bar(37)With TRD engineering method stakes(34)Top shaped steel(35)The connection steel bar of upper welding(36)Reinforcement by connection;
5)Mid-board template construction:Mid-board reinforcing bar is bound, in the pre-buried rubber and plastic block in evacuation platform position(30)With lateral connection muscle (31), bamboo slab rubber is installed(21)Make template, with adjustable transverse to support(27), the secondary stupefied lumps of wood(22), the main stupefied lumps of wood(23)It reinforces, By cross bar(19)With adjustable transverse to support(27)Connection;Screw arbor with nut at both-ends is uniformly arranged on interval wall form(24), to drawing spiral shell Bar(24)Pass through double nut(26), Two bors d's oeuveres steel pipe(25)It is fastenedly connected;
6)Top board construction:Top plate bed die is installed, time stupefied lumps of wood is set(22), the main stupefied lumps of wood(23), adjustable vertical support(28), By montant(18)Upper end and adjustable vertical support(28)Connection;Top plate bed die both sides are overlapped with side wall die head, binding top Slab muscle, subsequent casting concrete;
7)Evacuation platform is constructed:After mid-board form removal, rubber and plastic block is removed(30), leave embedded link slot(29), slot is interior to be set There is lateral connection muscle(31), install evacuation platform template(32), by evacuation platform reinforcing bar with lateral connection muscle(31)Banding fixed, Pour evacuation platform(10).
2. high-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction according to claim 1, feature exist In bottom plate(3)And chamfering(4)In pre-buried pvc pipe(6)And nut(7), bottom plate(3)Pass through vertical recyclable screw rod(12)It connects general Logical steel plate(14), chamfering(4)Pass through oblique recyclable screw rod(5)Connect chamfering steel plate(13).
3. high-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction according to claim 2, feature exist In general steel plate(14)With chamfering steel plate(13)The equal welding steel connector in edge(15), general steel plate(14)With chamfering steel plate (13)It is fastened by bolts and is linked to be entirety.
4. high-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction according to claim 1, feature exist In evacuation platform template(32)Using bulk integral forming steel form, shuttering supporting is had(33).
CN201610404918.1A 2016-06-08 2016-06-08 High-moisture ultra-soft soil box multicell cast in place frame method for tunnel construction Active CN106049531B (en)

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Publication number Priority date Publication date Assignee Title
CN108505805B (en) * 2018-03-21 2020-02-07 杭州江润科技有限公司 Large cast-in-situ water pool with expansion reinforcing belt for crack control and construction method thereof
CN108842819B (en) * 2018-09-07 2020-06-16 中国能源建设集团安徽电力建设第一工程有限公司 Urban rail transit cable line tunnel construction method
CN110130934B (en) * 2019-05-22 2020-07-07 河南省交通规划设计研究院股份有限公司 Construction method of urban tunnel branch junction with box-type top plate structure

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KR101301079B1 (en) * 2012-09-10 2013-09-03 안창일 Box construction method
CN103485366A (en) * 2013-09-30 2014-01-01 中铁一局集团有限公司 Safe stress conversion construction method for improvement on main structure of subway station
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KR101463217B1 (en) * 2013-09-06 2014-11-21 주식회사 하이드로코리아 A connecting structrue of box type and construction method using the same
CN105220626A (en) * 2015-10-27 2016-01-06 安徽水安建设集团股份有限公司 Steel form device and the construction method that combines with outer steel mould plate thereof in a kind of self-propelled

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Publication number Priority date Publication date Assignee Title
KR101301079B1 (en) * 2012-09-10 2013-09-03 안창일 Box construction method
KR101463217B1 (en) * 2013-09-06 2014-11-21 주식회사 하이드로코리아 A connecting structrue of box type and construction method using the same
CN103485366A (en) * 2013-09-30 2014-01-01 中铁一局集团有限公司 Safe stress conversion construction method for improvement on main structure of subway station
CN104060629A (en) * 2014-07-02 2014-09-24 中铁十二局集团第七工程有限公司 Covered top-down excavation subway station overlapped wall construction method and movable side wall formwork jumbo
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Inventor after: Wang Qinghao

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