CN103061774A - Shield tunnel construction environment simulation unit - Google Patents
Shield tunnel construction environment simulation unit Download PDFInfo
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- CN103061774A CN103061774A CN2013100022881A CN201310002288A CN103061774A CN 103061774 A CN103061774 A CN 103061774A CN 2013100022881 A CN2013100022881 A CN 2013100022881A CN 201310002288 A CN201310002288 A CN 201310002288A CN 103061774 A CN103061774 A CN 103061774A
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- environment simulation
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- foundation trench
- tunnel construction
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Abstract
Disclosed is a shield tunnel construction environment simulation unit. A foundation trench of the shield tunnel construction environment simulation unit is a rectangular reinforce concrete foundation trench. The tops of the left and right walls of the foundation trench are provided with channels. Columns on two sides of a moving reaction frame are disposed in the channels. A plurality of jacks are disposed below the moving reaction frame. The foundation trench is longitudinally divided into an environment simulation site and a starting well by a partition wall. The partition wall is provided with a shield entry. Fixed reaction grids are disposed on the left wall, right wall and front wall of the environment simulation site respectively. A plurality of horizontal jacks are disposed on the fixed reaction grids. A sliding retainer wall unit is arranged in front of the jacks and is disposed at the bottom of the environment simulation site through slides. The jacks on the fixed reaction grids and the jacks on the moving reaction frame are both connected with a hydraulic loading device. The shield tunnel construction environment simulation unit is in an open large-space structure, capable of simulating rich stratum environments, available for large-scale similar model experiments, capable of effectively eliminating boundary effect, capable of more truly reflecting the complex shield tunnel construction environment, and is highly reliable.
Description
Technical field
The present invention relates to a kind of shield tunnel construction environment simulator.
Background technology
Adopting the shield tunnel construction environment simulator to carry out the shield driving model test, is mechanical behavior and the generation of shield tunnel disease and a kind of important means of development with tunnel lining structure of influencing each other of Analysis of Complex ground environment and shield tunnel construction.
Shield tunnel advances in the stratum exactly, collapse Yi Bian prevent native sand, Yi Bian within it section excavate, a kind of method of building the tunnel of lining cutting operation.The shield tunnel construction method is applicable in the soft stratum usually, and it is very large with influencing each other of ground environment on every side.Need the engineering hydrology geology characteristic according to penetrating ground in the construction, be aided with various auxiliary construction measures.The shield structure had both required to bear strata pressure, guaranteed that again safety economy ground carries out tunnel piercing.Therefore, adopt influencing each other and generation and the development of shield tunnel disease of shield tunnel construction environment simulator simulated formation environment and shield tunnel construction, provide experimental basis to design and the construction of shield tunnel, tool is of great significance.
Existing shield tunnel construction environment simulator is also few, and the part that comes with some shortcomings.The construction environment of shield tunnel is complicated and changeable, usually run into the ground environments such as weak rich water, fragmentation, existing simulation system mainly adopts at model clay case interpolation analog material carries out scaled down ground environment simulated test, the model clay tankage is little, can only simulate different ground environments by changing analog material, the ground environment that can simulate is simple; Can't analog bias, the complicated ground environment such as heavily stressed; Simultaneously, the shield structure form of fracture that low capacity model clay case can be simulated is single, and the driving route is fixed, and applicable surface is narrow; Can only be used for the simulation of shield tunneling process, ignore the simulation of the sheet assembly unit of shield tail pipe and the processes such as shield tail decylization, slip casting, not simulate the driving overall process on the complete meaning.Certainly, more can't simulate shield tunnel and be in work progress under the complex three-dimensional space stress form and the auxiliary engineering method of coordinative construction.
Summary of the invention
The purpose of this invention is to provide a kind of shield tunnel construction environment simulator, this device can be simulated the various bad ground environment at shield tunnel construction place, realize the simulation of shield driving overall process under the true formation condition, to draw influencing each other and the influence factor of shield tunnel disease of shield tunnel construction and ground environment on every side, for the design of shield tunnel and construction provide more reliably test basis, guarantee better economy and the safety in tunnel.
The present invention solves its technical problem, the technical scheme that adopts is: a kind of shield tunnel construction environment simulator, comprise foundation trench, hydraulic loading device, control device, it is characterized in that: described foundation trench is rectangular-shaped sunk type steel concrete foundation trench, the top of the left and right sidewall of foundation trench is provided with conduit, the castor of portable counter-force frame two heel posts is installed in the conduit, and portable counter-force frame soffit is provided with a plurality of jack.
Described foundation trench is divided into environment simulation field and starting well by partition wall along the longitudinal direction, have shield structure entrance on the partition wall, the left and right sidewall of environment simulation field and antetheca all are equipped with fixed counter-force screen work, be evenly arranged the jack of a plurality of horizontal directions on the fixed counter-force screen work, the place ahead of jack is provided with slidingtype barricade unit, and slidingtype barricade unit is installed on bottom, environment simulation field by slide rail.
Jack on the described fixed counter-force screen work all is connected with hydraulic loading device with the jack of portable counter-force frame soffit.
The course of work of the present invention and principle are:
According to the test demand, in the environment simulation field, arrange the truly construction environment of layer material simulation shield tunnel complexity, closely connect construction environment such as need simulation shield tunnel, then be embedded in the relevant position, stratum with building (structure) object model in prefabricated existing local ground and the ground by experimental design.Earth pressure cell, foil gauge, displacement transducer, temperature pick up etc. are set in earth formation material simultaneously measure components and parts.Portable counter-force frame adjusted to along the longitudinal direction add the position, force.Control device control hydraulic loading device selects the jack combination on portable counter-force frame and the fixed counter-force screen work to exert oneself according to predetermined heap(ed) capacity and loading sequence, with the initial three-dimensional ground stress field of simulation shield tunnel construction environment.By the shield tunnel construction modeling scheme of setting, select corresponding shield machine kind and shield driving route to begin driving again.
After beginning driving, the shield structure is from starting well, and the shield structure entrance entered environment simulation yard on partition wall is finished digging face excavation, unearthed, the shield machine propelling of soil output, the simulation of the driving overall processes such as pipe sheet assembling and shield tail decylization, slip casting and auxiliary engineering method.
In the tunneling process, also can simulate the shield tunnel disease: during pipe sheet assembling, with the section of jurisdiction simulation Lining Crack of cracking, with transverse slot simulation section of jurisdiction faulting of slab ends between pipe ring; During slip casting, simulate slip casting leakiness etc. with the cavity after the lining cutting.Analyze it to tunnel structure and the impact of ground environment on every side.
In the tunneling process, earth pressure cell, foil gauge, displacement transducer, temperature pick up etc. are measured the corresponding data of components and parts dynamic monitoring.
After test is finished, data analysis and judgement to each phase measuring components and parts feedback, can draw the driving of shield tunnel under set test conditions overall process to disturbing influence and the stability of ground environment, and the influence factor of shield tunnel disease, research and analyse stress morphology and the variation of tunnel structure, for design and the construction of shield tunnel provides test basis.
Compared with prior art, the invention has the beneficial effects as follows:
One, the environment simulation field is open large spatial structure, and material capacity is large, and the ground environment of simulation is abundant, can carry out the large scale layer during similar model test, can effectively eliminate boundary effect, the complicated shield tunnel construction environment of truer reflection, widely applicable, good reliability.
Two, by building (structure) object model in pre-buried local ground and the ground in the environment simulation field, can simulate shield tunnel and closely connect really construction environment, and quality, the size tested sensor have no special requirements the measurement convenience.
Three, in the environment simulation field of open large spatial structure, change the force that adds of vertical direction jack by the portable counter-force frame of operation upper part, again in conjunction with the jack on the fixed counter-force screen work of selecting, and the combination of exert oneself speed and size, the part of realizing flexibly ground environment adds unloading, finishes the real simulation of shield tunnel multiple complicated three-dimensional stress field.
Four, the applicable different section form of this environment simulator, different shield structure kind and shield machine tool excavation operation with specific function, and shield tunneling, be unearthed, the simulation of the driving overall processes such as pipe sheet assembling, shield tail decylization, slip casting, auxiliary engineering method.
Five, with the disease in equivalent material simulating shield tunnel construction and the operation process, analyze it to tunnel structure and the impact of ground environment on every side, the stressed condition of research shield tunnel construction, structural safety and durability, thus guarantee better safety and the economy in tunnel.
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the plan structure schematic diagram of the embodiment of the invention.
The specific embodiment
Embodiment
Fig. 1 illustrates, a kind of shield tunnel construction environment simulator, comprise foundation trench 1, hydraulic loading device 2, control device, it is characterized in that: described foundation trench 1 is the sunk type steel concrete foundation trench of rectangular-shaped shape, the top of foundation trench 1 left and right sidewall is provided with conduit 1a, the castor of 3 liang of heel posts of portable counter-force frame is installed in the conduit 1a, and portable counter-force frame 3 soffits are provided with a plurality of jack 5.
Described foundation trench 1 is divided into environment simulation field 1c and starting well 1d by partition wall 1b along the longitudinal direction, have shield structure entrance 1e on the partition wall 1b, the left and right sidewall of environment simulation field 1c and antetheca all are equipped with fixed counter-force screen work 4, be evenly arranged the jack 5 of a plurality of horizontal directions on the fixed counter-force screen work 4, the place ahead of jack 5 is provided with slidingtype barricade unit 6, and slidingtype barricade unit 6 is installed on environment simulation field 1c bottom by slide rail 7;
Jack 5 on the described fixed counter-force screen work 4 all is connected with hydraulic loading device 2 with the jack 5 of portable counter-force frame 3 soffits.
Claims (1)
1. shield tunnel construction environment simulator, comprise foundation trench (1), hydraulic loading device (2), control device, it is characterized in that: described foundation trench (1) is rectangular-shaped sunk type steel concrete foundation trench, the top of the left and right sidewall of foundation trench (1) is provided with conduit, the castor of portable counter-force frame (3) two heel posts is installed in the conduit, and portable counter-force frame (3) soffit is provided with a plurality of jack (5);
Described foundation trench (1) is divided into environment simulation field and starting well by partition wall along the longitudinal direction, have shield structure entrance on the partition wall, the left and right sidewall of environment simulation field and antetheca all are equipped with fixed counter-force screen work (4), be evenly arranged the jack (5) of a plurality of horizontal directions on the fixed counter-force screen work (4), the place ahead of jack (5) is provided with slidingtype barricade unit (6), and slidingtype barricade unit (6) is installed on bottom, environment simulation field by slide rail (7);
The jack (5) of the jack (5) on the described fixed counter-force screen work (4) and portable counter-force frame (3) soffit all is connected with hydraulic loading device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100022881A CN103061774A (en) | 2013-01-04 | 2013-01-04 | Shield tunnel construction environment simulation unit |
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| CN2013100022881A CN103061774A (en) | 2013-01-04 | 2013-01-04 | Shield tunnel construction environment simulation unit |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103514786A (en) * | 2013-09-13 | 2014-01-15 | 上海交通大学 | Model test method based on displacement control method for influences of tunnel construction on environment |
| CN103616287A (en) * | 2013-11-28 | 2014-03-05 | 湖南大学 | Laboratory model testing device for tunnel excavation |
| CN103915030A (en) * | 2014-04-24 | 2014-07-09 | 湖南大学 | Underground engineering tunneling model test device with expanding and contracting function |
| CN104165058A (en) * | 2014-07-30 | 2014-11-26 | 浙江大学 | Device for simulating geological environment in TBM tunneling process |
| CN104833537A (en) * | 2015-02-17 | 2015-08-12 | 北京交通大学 | Similarity model test apparatus for simulating tunnel construction |
| CN105136507A (en) * | 2015-09-16 | 2015-12-09 | 长安大学 | Experimental apparatus and method of indoor simulation tunnel excavation |
| CN105863734A (en) * | 2016-05-20 | 2016-08-17 | 天津大学 | Device for simulating and monitoring existing tunnel during excavation of double-track tunnel |
| CN110749721A (en) * | 2019-09-28 | 2020-02-04 | 同济大学 | Tunnel model test platform considering complex loading and unloading working conditions |
| CN111829804A (en) * | 2020-07-24 | 2020-10-27 | 上海隧道工程有限公司 | Shield propulsion simulation test platform |
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| JPH0829297A (en) * | 1994-07-12 | 1996-02-02 | Nishimatsu Constr Co Ltd | Method and apparatus for test of shield excavation model |
| CN2771845Y (en) * | 2004-12-09 | 2006-04-12 | 上海隧道工程股份有限公司 | Large-sized shield driving analogue test platform |
| CN2801891Y (en) * | 2005-06-28 | 2006-08-02 | 中国矿业大学(北京) | Slide rail device for engineering test |
| CN101775989A (en) * | 2010-02-05 | 2010-07-14 | 上海盾构设计试验研究中心有限公司 | Comprehensive simulation test platform of large sunk shield entry-driving machine |
| CN203066983U (en) * | 2013-01-04 | 2013-07-17 | 西南交通大学 | Shield tunnel construction environment simulation system |
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2013
- 2013-01-04 CN CN2013100022881A patent/CN103061774A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0829297A (en) * | 1994-07-12 | 1996-02-02 | Nishimatsu Constr Co Ltd | Method and apparatus for test of shield excavation model |
| CN2771845Y (en) * | 2004-12-09 | 2006-04-12 | 上海隧道工程股份有限公司 | Large-sized shield driving analogue test platform |
| CN2801891Y (en) * | 2005-06-28 | 2006-08-02 | 中国矿业大学(北京) | Slide rail device for engineering test |
| CN101775989A (en) * | 2010-02-05 | 2010-07-14 | 上海盾构设计试验研究中心有限公司 | Comprehensive simulation test platform of large sunk shield entry-driving machine |
| CN203066983U (en) * | 2013-01-04 | 2013-07-17 | 西南交通大学 | Shield tunnel construction environment simulation system |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103514786A (en) * | 2013-09-13 | 2014-01-15 | 上海交通大学 | Model test method based on displacement control method for influences of tunnel construction on environment |
| CN103616287A (en) * | 2013-11-28 | 2014-03-05 | 湖南大学 | Laboratory model testing device for tunnel excavation |
| CN103616287B (en) * | 2013-11-28 | 2015-09-02 | 湖南大学 | A kind of tunnel excavation indoor model test device |
| CN103915030B (en) * | 2014-04-24 | 2016-06-01 | 湖南大学 | The underground works driving model test apparatus of the scalable function of a kind of tool |
| CN103915030A (en) * | 2014-04-24 | 2014-07-09 | 湖南大学 | Underground engineering tunneling model test device with expanding and contracting function |
| CN104165058A (en) * | 2014-07-30 | 2014-11-26 | 浙江大学 | Device for simulating geological environment in TBM tunneling process |
| CN104833537A (en) * | 2015-02-17 | 2015-08-12 | 北京交通大学 | Similarity model test apparatus for simulating tunnel construction |
| CN105136507A (en) * | 2015-09-16 | 2015-12-09 | 长安大学 | Experimental apparatus and method of indoor simulation tunnel excavation |
| CN105136507B (en) * | 2015-09-16 | 2016-08-24 | 长安大学 | The experimental provision of a kind of lab simulation tunnel excavation and method |
| CN105863734A (en) * | 2016-05-20 | 2016-08-17 | 天津大学 | Device for simulating and monitoring existing tunnel during excavation of double-track tunnel |
| CN105863734B (en) * | 2016-05-20 | 2017-10-10 | 天津大学 | Double track tunnel excavates existing tunnel simulation monitoring device |
| CN110749721A (en) * | 2019-09-28 | 2020-02-04 | 同济大学 | Tunnel model test platform considering complex loading and unloading working conditions |
| CN111829804A (en) * | 2020-07-24 | 2020-10-27 | 上海隧道工程有限公司 | Shield propulsion simulation test platform |
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Application publication date: 20130424 |