CN109763835A - A kind of shield machine reception steel platform - Google Patents
A kind of shield machine reception steel platform Download PDFInfo
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- CN109763835A CN109763835A CN201711401271.8A CN201711401271A CN109763835A CN 109763835 A CN109763835 A CN 109763835A CN 201711401271 A CN201711401271 A CN 201711401271A CN 109763835 A CN109763835 A CN 109763835A
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Abstract
The invention discloses a kind of shield machines to receive steel platform, including several bracing members columns, thick steel plate, steel bracket, under conditions of hardened structure has little time construction in, it can use steel column platform and carry out whole reception shield machine, the connection system being welded and fixed between steel column using the interaction of work 20a I-steel, guarantee to be formed between steel column whole, stability is higher, reception bracket adds the welding of I20a angle steel as resistant slide block and steel plate welding using 2cm steel plate, it prevents shield machine from sliding, ensure that the received safety of shield.
Description
Technical field
The present invention relates to receive steel platform more particularly to a kind of shield machine reception steel platform.
Background technique
Conventional shield machine reception in subway station shield shaft bottom plate or middle plate structure of reinforced concrete and conserves strong
Degree carries out after reaching requirement, will receive bracket and be directly placed on concrete structure fixed receive.Has above-mentioned receiving
Condition generally requires station and has the completion of shield received well structure construction, duration looser condition.
During Urban Metro Construction, often due to preliminary engineering and other external factor influence, station main structure
Construction time is short, and the duration is nervous.Especially F3/B3 superimposing thread tunnel station construction when, the more commonly lower two layers of station of project amount
Greatly, minus two layers of shield condition of acceptance can not be provided on time, that is, be unable to complete at minus two layers of shield received well in board concrete structure
Construction.
Summary of the invention
To solve the above problems, the present invention provides a kind of shield machine reception steel platform, hardened structure has little time construction in
Under the conditions of, it can use steel column platform and carry out whole reception shield machine, the interaction welding of work 20a I-steel is used between steel column
Fixed connection system guarantees that formation is whole between steel column, and stability is higher, receives bracket using δ=2cm steel plate and adds I20a
Angle steel welding is welded as resistant slide block and steel plate, is prevented shield machine from sliding, be ensure that the received safety of shield.
To achieve the above object, the present invention uses following technological means:
The present invention provides a kind of shield machine reception steel platform, including several bracing members columns, thick steel plate, steel bracket, described
Each bracing members column bottom is welded and fixed with pre-embedded steel slab, is provided with several horizontal braces, batter brace between each bracing members column,
The top of the bracing members column is provided with the longitudinal I-steel for connecting longitudinal column, the lateral I-steel for connecting transverse upright,
Plate in station structure is withstood in the longitudinal direction I-steel left end, and longitudinal I-steel right end resists end side wall, the longitudinal direction I-steel,
Lateral I-steel top is provided with thick steel plate, and the thick steel plate top is provided with shield machine bracket, and the shield machine bracket passes through
I-steel one is connect with side wall, before and after the shield machine bracket and in adopt several places between hardened structure and use I-steel one as steel branch
Fixed several I-steel one are respectively installed in support at left and right sides of shield machine bracket between main structure.
Further, three row of horizontal tie rod of upper, middle and lower, 4 vertical oblique pulls are provided between each bracing members column
Item, 2 layers of horizontal batter brace.
Further, the bracing members column is using 12 settings, longitudinal 4 rows, lateral 3 rows, above 12 steel columns
Using the longitudinal direction the 45a I-steel of 6 12m, 2 are 1 group of carry out Two bors d's oeuveres, connect longitudinal 4 root posts, Two bors d's oeuveres I-steel left end
Plate in station structure is withstood, right end withstands end side wall；Laterally 3 root posts are connected using the 45a transverse direction I-steel of 8 1.36m.
Further, the I-steel one is 45a I-steel.
Further, for the thick steel plate with a thickness of 20 millimeters, laying width is 8.0m, length 11.75m.
Further, the horizontal braces, vertical batter brace, horizontal batter brace use 20a I-steel.
Further, before and after the shield machine bracket and in adopt between hardened structure and use 45a I-steel as bracing members at 8,
Respectively 6 45a I-steel are fixed in installation between main structure at left and right sides of shield machine bracket.
Further, the shield machine bracket and its underpart thick steel plate add the welding of I20a angle steel as resistant slide block.
Beneficial effects of the present invention:
Under conditions of hardened structure has little time construction in, it is whole to can use the progress of steel column platform for the configuration of the present invention is simple
Body receives shield machine, and the connection system being welded and fixed between steel column using the interaction of work 20a I-steel guarantees to be formed between steel column
Whole, stability is higher, and reception bracket adds the welding of I20a angle steel as resistant slide block and steel plate weldering using δ=2cm steel plate
It connects, prevents shield machine from sliding, ensure that the received safety of shield.
Detailed description of the invention
Fig. 1 is the overall structure diagram of embodiment 1；
Fig. 2 is the side elevation schematic diagram of embodiment 1；
Fig. 3 is the elevational schematic view of embodiment 1；
Fig. 4 is the floor map of embodiment 1；
Fig. 5 is the boundary condition schematic diagram of embodiment 1；
Fig. 6 is the shield machine bracket structural schematic diagram of embodiment 1；
Fig. 7 is the shield machine weight distribution schematic diagram of embodiment 1；
Fig. 8 is the frictional resistance distribution schematic diagram of embodiment 1；
Fig. 9 is the platform maximum displacement schematic diagram that the deformation of embodiment 1 calculates；
Figure 10 is the shield machine walking working face maximum displacement schematic diagram that the deformation of embodiment 1 calculates；
Figure 11 is the plate unit maximum stress schematic diagram of the Strength co-mputation of embodiment 1；
Figure 12 is the 45a Two bors d's oeuveres I-steel greatest combined stress schematic diagram of the Strength co-mputation of embodiment 1；
Figure 13 is the steel pipe post greatest combined stress schematic diagram of the Strength co-mputation of embodiment 1；
Figure 14 is the steel pipe post maximum counter-force schematic diagram of the Strength co-mputation of embodiment 1；
Figure 15 is that the connection of the Strength co-mputation of embodiment 1 is greatest combined stress schematic diagram；
Figure 16 is the connection system maximum axle power schematic diagram of the Strength co-mputation of embodiment 1；
Figure 17 is the basic calculation maximum counter-force schematic diagram of embodiment 1；
Figure 18 is the steel pipe column floor diagram of embodiment 1；
Figure 19 is the parameter input interface schematic diagram of the stable calculation of embodiment 1；
Figure 20 is 1 schematic diagram of mode of the stable calculation of embodiment 1；
Figure 21 is 2 schematic diagram of mode of the stable calculation of embodiment 1；
Figure 22 is 3 schematic diagram of mode of the stable calculation of embodiment 1；
Figure 23 is 4 schematic diagram of mode of the stable calculation of embodiment 1；
Figure 24 is 5 schematic diagram of mode of the stable calculation of embodiment 1；
Figure 25 is 6 schematic diagram of mode of the stable calculation of embodiment 1；
Figure 26 is the pre-embedded steel slab floor map of embodiment 1；
Figure 27 is the pre-embedded steel slab dowel arrangement schematic diagram of embodiment 1；
Figure 28 is the pre-embedded steel slab dowel full-page proof schematic diagram of embodiment 1；
Figure 29 is the I-steel full-page proof schematic diagram of embodiment 1；
Figure 30 is that the top I-shaped steel part of embodiment 1 connects floor map；
Figure 31 is the top I-shaped steel part connecting side face schematic diagram of embodiment 1；
Figure 32 is the shield machine bracket and side wall connection effect schematic diagram of embodiment 1.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention will be further described.
Embodiment 1: westwards village station~section Wen Jinzhan, the left line the beginning and the end mileage in section are long for No. 9 lines of Shenzhen Metro
498.56m, it is that westwards village station, the station Xi Cun are transfer stops that left line, which goes out hole, and there are height differences for tunnel shielding portal and transfer section bottom plate.In order to
Reception construction when to arrival, shield reception need to set up shield and receive steel platform.Shield receives end well and reserves pore size
For 11.5 × 7.5m.Main structure is gone along with sb. to guard him using diaphram wall, and diaphram wall is with a thickness of 1000mm.
This implements into the shield machine diameter in hole to be φ 6340；Shield machine host length is 8650mm, the long 1650mm of cutterhead.
Head self weight is 320T.
In conjunction with field condition, westwards village station is transfer stop, and left line tunnel shielding portal bottom is with negative Tipple Bottom plate face height difference
8.337m.In order to create condition of acceptance to shield-tunneling construction, steel platform need to be set up by village station end well westwards.
If shield receiving platform (length × width × height=11.5m × 7.5m × 8.337m) needs to be set up January in advance,
And shield is installed and receives bracket, after shield machine reaches village station westwards, implements to disintegrate, lifts out shield machine head.
The present embodiment provides a kind of shield machines to receive steel platform,
(1) structure designs
Steel platform is followed successively by steel pipe column (600 × 12), connection system (12.6 double flute steel), 45a Two bors d's oeuveres work from top to bottom
Word steel (stringer), 20cm thick steel plate, shield machine bracket.Bracket is fixed by the limit I-steel of welding on the steel plate.Steel
Tubular pole and minus 1 bottom plate are anchored (foundation bolt).45a Two bors d's oeuveres I-steel (stringer) and top steel plate hold out against plate in minus 2, side when calculating
Boundary's condition considers according to x, z to constraint.
(2) load is arranged
Shield machine bracket and rigid platform transverse direction contact width are as follows: 0.5m × 2.Shield machine considers according to 320t, according to shield
Control platform parameter, shield machine is from appearing appearing completely, jacking force 120t --- 190t.This calculating is examined according to 190t
Consider.
(1) shield machine gravity: 320/ (11.5 × 0.5 × 2)=27.83t/ ㎡.
(2) frictional resistance applies according to joint load: 190t/126=1.508t.Dead load: midas is voluntarily added.
(3) Load Combination: 1.4 × [(1)+(2)]+1.2 × (3)
(3) calculation specifications
This is calculated will all consider from hole according to shield machine, i.e. shield machine whole gravity and friction masterpiece when walking
With on bracket.
Using Load Combination: 1.4 × [(1)+(2)]+1.2 × (3).
(1) deformation calculates
Platform maximum displacement: 24.97mm is concentrated mainly on steel plate edge
Shield machine walking working face maximum displacement: 4.81mm
(2) Strength co-mputation
Plate unit maximum stress: 152.53N/mm2
45a Two bors d's oeuveres I-steel greatest combined stress 75.14N/mm2
Steel pipe post greatest combined stress 56.88N/mm2
Maximum counter-force 48.86t
Connection is greatest combined stress 79.53N/mm2
Connection is maximum axle power 224.45kN
Bracing (double 12.6 channel steels) welding seam calculating (the high 8mm of weld seam):
Internal force: shearing N=224.45kN
Stress:
Therefore the high 8mm of weld seam, two-sided 4 weld seam weld lengths 12cm can be met the requirements.
(3) basic calculation
Maximum counter-force 48.86t
Counter-force computational chart
| Load | FX(kN) | FY(kN) | FZ(kN) |
| Self weight | 0 | 0 | 400.555852 |
| Machine weight | -1863.341953 | 0 | 3138.005 |
| It is total | -1863.341953 | 0 | 3538.560852 |
Steel pipe column maximum counter-force is 48.86t, is anchored on concrete slab by 800 × 800 × 20 steel plates.
Concrete plate thickness 0.4m considers that then, foundation bearing capacity must reach below concrete slab according to 45 ° of angles of flare:
After basement process, requirements above must be reached.
(4) stable calculation
This calculates the overall stability of steel platform, 6 mode is arranged, self weight is according to constant load, machine weight, shield machine
Frictional force considers according to variable load.
Mode 1: critical load coefficient 10.00
Mode 2: critical load coefficient 10.01
Mode 3: critical load coefficient 13.61
Mode 4: critical load coefficient 13.62
Mode 5: critical load coefficient 15.68
Mode 6: critical load coefficient 15.68
Learnt by calculating above: steel platform critical load coefficient is larger, and is non-shield machine walking position steel plate buckling,
Therefore, stable calculation is met the requirements.Steel platform design meets requirement.
To guarantee steel platform in the stabilization of floor structure, floor bearing power intensity need to reach 190.08kpa, in bottom slab concreting
When pre-embedded steel slab need to be set.
(4) preparation of construction
(1) sundries is cleared up, and carries out the sundries cleaning on bottom plate after marching into the arena first, ponding excludes.
(2) column bottom is levelling, and worker is arranged to clean out sundries on pre-embedded steel slab and cement slurry etc., in order to avoid influence subsequent
Welding effect.
(3) surveying setting-out, measuring goes out the plan-position central point of every bracing members column on steel plate surface, and carries out mark
Note.Repetition measurement bracing members elevation of bottom is controlled in -19.53m.
(5) steel platform is installed
(1) steel column and the installation of bottom level tie rod
Using 80T truck crane by the bracing members of length 7.86m, it is in place that underground is hung in by root.
The installation for carrying out corner bracing members column first, after standing on underground vertically, in the case where crane rope is not loose,
Steel column ring flange and bottom pre-embedded steel slab are fully welded fixation, wirerope is unclamped after fixing, is continuedLiftingSecond closed on
Support, after second support is in place, crane rope is not loose, its steel column ring flange and bottom pre-embedded steel slab are fully welded fixation,
And then by bottom I-steel horizontal braces and bottom batter brace firm welding, the third root of installation between two supportsColumnWith with
Upper method, but must assure that the column plan-position of first three root installation forms a triangle.Then remaining steel is successively installed
Column, after every steel column is in place, first by itRing flangeIt is fixed with bottom steel plate spot welding, then by itself and adjacent installation
I-shaped molten steel horizontal drawing item and bottom batter brace firm welding are used between column, until all installation is in place for all support posts.
(2) batter brace is installed
In order to ensure steel platform monolithic stability, between steel column other than setting three row of horizontal tie rod of upper, middle and lower, also in addition
If 4 vertical batter braces and 2 layers of horizontal batter brace, tie rod uses I-steel as follows.Install general sequence be from top to bottom,
From east orientation west, it may be assumed that the vertical batter brace in the vertical batter brace → lower part in upper level batter brace → top → lower horizontal batter brace.
(3) installation of branch support I-steel and steel plate are laid with
Globality and top stress to guarantee steel platform is more reasonable, uses 6 12m's above 12 steel columns
45a I-steel, 2 are 1 group of carry out Two bors d's oeuveres, connect longitudinal 4 root posts, and Two bors d's oeuveres I-steel left end withstands plate in station structure,
Right end withstands end side wall.Laterally 3 root posts are connected using the 45a I-steel of 8 1.36m.
(4) just bracket is connect with side wall
Rigid bracket is connect with side wall using 45a I-steel, reduces pallet top deformation.
(5) steel plate is laid with
It is in place for the ease of worker operation and reception bracket, 20mm thick steel plate is completely spread at the top of column, being laid with width is
8.0m, length 11.75m.Spot welding between steel plate and i-beam frame, is fixed temporarily by one block of steel plate of every laying immediately.
(6) bracket installation is received
Shield receives pedestal and is prefabricated into for steel construction, and shield base position is quasi- by hole actual measurement center and design axis
True setting-out, according to the baseline of surveying and locating when pedestal is installed, two track centerlines must be directed at portal center and push away with shield
Into axis it is consistent, it is ensured that shield driving motion track meets construction requirement, according to actual measurement portal position and it is expected that shield machine into
Hole posture, it is -11.93m that installation, which receives the control of bracket locations elevation of bottom,.Plane, which is subject to, surveys portal data and places, and hangs out
When underground is welded and fixed in place, after pedestal is welded, reinforcing support need to be carried out, it is ensured that its strength and stiffness.
(7) bracket rear support is installed
Receive after bracket is installed, before and after bracket and in adopt between hardened structure and use 45a I-steel as steel branch at 8
Support prevents bracket from front-rear direction displacement occurs.Support uses steel corbel with main structure connecting portion, it is ensured that support and main body knot
Structure, bracket push up reality, avoid concrete fragmentation or receive bracket generation displacement.It is each between main structure at left and right sides of bracket simultaneously
6 45a type I-steel are fixed in installation, prevent bracket from the displacement of left and right directions occurs.Bracket all around I-steel length with existing
Field actual conditions blanking.
(8) coating butter
Receiving bracket top surface coating butter, reducing the frictional force that shield machine slides on bracket, it is flat to reduce bottom steel
Platform lateral force.
(6) it checks and accepts
After all components of steel platform are installed, technical staff and quality inspection people are led by unit in charge of construction person in charge of the technology aspect first
Member carries out an acceptance inspection, and whether emphasis checks specification, the quantity of component, height, the length of weld seam, and push up with main structure junction
It is real.After acceptance(check), report management carries out an acceptance inspection, and can come into operation after management acceptance(check).
Claims (8)
1. a kind of shield machine receives steel platform, which is characterized in that described each including several bracing members columns, thick steel plate, steel bracket
Bracing members column bottom is welded and fixed with pre-embedded steel slab, and several horizontal braces, batter brace, institute are provided between each bracing members column
The top for stating bracing members column is provided with the longitudinal I-steel for connecting longitudinal column, the lateral I-steel for connecting transverse upright, institute
It states longitudinal I-steel left end and withstands plate in station structure, longitudinal I-steel right end resists end side wall, the longitudinal direction I-steel, cross
I-steel top is provided with thick steel plate, the thick steel plate top is provided with shield machine bracket, and the shield machine bracket passes through work
Word steel one is connect with side wall, before and after the shield machine bracket and in adopt several places between hardened structure and use I-steel one as steel branch
Fixed several I-steel one are respectively installed in support at left and right sides of shield machine bracket between main structure.
2. a kind of shield machine according to claim 1 receives steel platform, which is characterized in that between each bracing members column
It is provided with three row of horizontal tie rod of upper, middle and lower, 4 vertical batter braces, 2 layers of horizontal batter brace.
3. a kind of shield machine according to claim 1 receives steel platform, which is characterized in that the bracing members column uses 12
Root setting, longitudinal 4 rows, laterally 3 rows, use the longitudinal direction the 45a I-steel of 6 12m above 12 steel columns, and 2 are 1 group of progress
Two bors d's oeuveres connects longitudinal 4 root posts, and Two bors d's oeuveres I-steel left end withstands plate in station structure, and right end withstands end side wall；Using 8
The 45a transverse direction I-steel of root 1.36m connects laterally 3 root posts.
4. a kind of shield machine according to claim 1 receives steel platform, which is characterized in that the I-steel one is 45a work
Word steel.
5. a kind of shield machine according to claim 1 receives steel platform, which is characterized in that the thick steel plate is with a thickness of 20 millis
Rice, laying width are 8.0m, length 11.75m.
6. a kind of shield machine according to claim 3 receives steel platform, which is characterized in that the horizontal braces, it is vertical tiltedly
Tie rod, horizontal batter brace use 20a I-steel.
7. a kind of shield machine according to claim 1 or 4 receives steel platform, which is characterized in that before the shield machine bracket
Afterwards and in adopt between hardened structure and use 45a I-steel as bracing members at 8, at left and right sides of shield machine bracket between main structure
6 45a I-steel are fixed in each installation.
8. a kind of shield machine according to claim 1 receives steel platform, which is characterized in that under the shield machine bracket and its
Portion's thick steel plate adds the welding of I20a angle steel as resistant slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401271.8A CN109763835A (en) | 2017-12-22 | 2017-12-22 | A kind of shield machine reception steel platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401271.8A CN109763835A (en) | 2017-12-22 | 2017-12-22 | A kind of shield machine reception steel platform |
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| Publication Number | Publication Date |
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| CN109763835A true CN109763835A (en) | 2019-05-17 |
Family
ID=66450130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711401271.8A Pending CN109763835A (en) | 2017-12-22 | 2017-12-22 | A kind of shield machine reception steel platform |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374612A (en) * | 2019-07-26 | 2019-10-25 | 济南轨道交通集团有限公司 | It is a kind of applied to the shield machine receiving platform and construction technology that face under dummy status |
| CN111828024A (en) * | 2020-07-17 | 2020-10-27 | 青岛理工大学 | Adjustable receiving platform of tunnel boring equipment |
| CN112253149A (en) * | 2020-11-02 | 2021-01-22 | 北京市政建设集团有限责任公司 | Reinforcing method for shield tunneling machine to translate through reserved hole section of subway station middle plate |
| CN112253148A (en) * | 2020-11-02 | 2021-01-22 | 北京市政建设集团有限责任公司 | Movable supporting method for enabling shield to horizontally move through station middle plate in stacking arrangement of travelling crane tunnels |
| CN113513325A (en) * | 2020-05-14 | 2021-10-19 | 中国建筑第二工程局有限公司 | Shield tunneling machine steel receiving platform and mounting method thereof |
| CN113530557A (en) * | 2021-08-09 | 2021-10-22 | 中建一局集团建设发展有限公司 | Subway transfer passage structure without receiving well and construction method |
| CN113756832A (en) * | 2021-09-28 | 2021-12-07 | 中铁一局集团有限公司 | Large-section rectangular oblique-crossing pipe jacking construction method |
| CN118407773A (en) * | 2024-06-21 | 2024-07-30 | 中铁十一局集团城市轨道工程有限公司 | Construction method of negative ring pipe slice supporting system and transportation shared platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110374612A (en) * | 2019-07-26 | 2019-10-25 | 济南轨道交通集团有限公司 | It is a kind of applied to the shield machine receiving platform and construction technology that face under dummy status |
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| CN111828024A (en) * | 2020-07-17 | 2020-10-27 | 青岛理工大学 | Adjustable receiving platform of tunnel boring equipment |
| CN111828024B (en) * | 2020-07-17 | 2021-09-14 | 青岛理工大学 | Adjustable receiving platform of tunnel boring equipment |
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| CN112253149A (en) * | 2020-11-02 | 2021-01-22 | 北京市政建设集团有限责任公司 | Reinforcing method for shield tunneling machine to translate through reserved hole section of subway station middle plate |
| CN112253148A (en) * | 2020-11-02 | 2021-01-22 | 北京市政建设集团有限责任公司 | Movable supporting method for enabling shield to horizontally move through station middle plate in stacking arrangement of travelling crane tunnels |
| CN113530557A (en) * | 2021-08-09 | 2021-10-22 | 中建一局集团建设发展有限公司 | Subway transfer passage structure without receiving well and construction method |
| CN113756832A (en) * | 2021-09-28 | 2021-12-07 | 中铁一局集团有限公司 | Large-section rectangular oblique-crossing pipe jacking construction method |
| CN118407773A (en) * | 2024-06-21 | 2024-07-30 | 中铁十一局集团城市轨道工程有限公司 | Construction method of negative ring pipe slice supporting system and transportation shared platform |
| CN118407773B (en) * | 2024-06-21 | 2024-09-24 | 中铁十一局集团城市轨道工程有限公司 | Construction method of negative ring pipe slice supporting system and transportation shared platform |
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Application publication date: 20190517 |