CN106321115B - A kind of shield tunnel construction model construction method - Google Patents
A kind of shield tunnel construction model construction method Download PDFInfo
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- CN106321115B CN106321115B CN201610980409.3A CN201610980409A CN106321115B CN 106321115 B CN106321115 B CN 106321115B CN 201610980409 A CN201610980409 A CN 201610980409A CN 106321115 B CN106321115 B CN 106321115B
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- shield tunnel
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000004567 concrete Substances 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000004088 simulation Methods 0.000 claims abstract description 7
- 238000005336 cracking Methods 0.000 claims abstract description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 18
- 238000004826 seaming Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 230000036244 malformation Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000009916 joint effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 206010023230 Joint stiffness Diseases 0.000 description 1
- 206010068052 Mosaicism Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of structural model construction methods of shield tunnel, it is characterised in that：Structural model is built using method for numerical simulation, to shield tunnel construction according to material and damage performance difference circumferential subregion and between layer simulates section of jurisdiction to layering, using concrete cracking contact, the diameter of bolt is more than using bolt hole.The model that the present invention is built more can reasonably embody the spatial character and malformation performance of material, embody connector effect.
Description
Technical field
The present invention relates to a kind of tunnel models, and in particular to one kind being suitable for shield duct piece tunnel model construction method.
Background technology
Shield tunnel, which is built in the development of urban public tranlport system, to play an important roll, with shield tunnel quantity
The problem of sharp increase, tunnel operation security is just becoming growing interest.Operation the phase, reasonable tunnel structure Performance Evaluation, in time
Tunnel defect is administered, is the important leverage of rail traffic safety.
In the prior art, tunnel lateral direction is reduced to a homogeneous annulus by the equivalent continuous rigidity model in the wider longitudinal direction of application,
Seam effect is not considered.The amendment rigidity model influenced using joint stiffness consideration circumferential weld is reduced, can preferably embody tunnel
Circumferential deformation, but cannot consider that tunnel seam opens effect.More hinge ring models, beam-spring method, rigid plate-spring-loaded floating die
Type simulates joint action with hinge or spring, can preferably evaluate the Stiffness and seam effect caused by duct piece connector, but neglect
The spatial character of section of jurisdiction is omited.In the bending resistance research of prestressed concrete continuous beam, it is proposed that if concrete section is divided into
The strip coating method model of dry item/block is based on plane section assumption and classical mechanics equilibrium condition, can preferably react multiple material
Mechanical characteristic under matter, a variety of stress states, result of calculation are widely considered to be theoretical value.But the application of the model is current
It is confined in the plane analytical analysis of subrange.Using the numerical model of contact surface treatment between section of jurisdiction, there are contact surfaces
Nonlinearity problem, computational efficiency is low, result is likely difficult to restrain.
Therefore, research and development are a kind of considering seam effect, material space characteristic and damage performance simultaneously, and ensures that calculating structure is accurate
Exactness, computational efficiency three-dimensional shield tunnel construction model for shield tunnel construction Performance Evaluation have very important meaning
Justice.
Invention content
The goal of the invention of the present invention is to provide a kind of tunnel structural model structure suitable for shield tunnel construction Performance Evaluation
Construction method, the tunnel structural model consider seam effect, material space characteristic and damage performance, and can guarantee that calculating structure is accurate
Degree, computational efficiency.
To achieve the above object of the invention, the technical solution adopted by the present invention is：A kind of structural model structure of shield tunnel
Method, using method for numerical simulation build structural model, to shield tunnel construction according to material with damage performance difference in circumferential direction
Subregion and layer to layering, using concrete cracking simulate section of jurisdiction between contact.
In above-mentioned technical proposal, using the seam of adjacent duct pieces of shield tunnel as initial position, the circumferential direction subregion is successively
Including seaming zone, seam subregion, armored concrete subregion, normal concrete area；From outside to inside, the layer includes successively to layering
First normal concrete layer, the first reinforced concrete floor, the second normal concrete layer, the second reinforced concrete floor, third are common
Concrete layer.
In above-mentioned technical proposal, seaming zone material breaks ring model using William-Warnke, and tensile strength is set as zero,
Section of jurisdiction is simulated by section of jurisdiction splaying effect when pulling force；Its compression strength is set as identical as steel.
Wherein, seam region width is set as 5~10 millimeters.
In above-mentioned technical proposal, seam subregion, normal concrete area, the first normal concrete floor, the second normal concrete
Layer, third normal concrete layer material parameter according to the concrete parameters of use be arranged.
Armored concrete subregion, the first reinforced concrete floor, the second reinforced concrete floor, are modeled using monoblock type.
Wherein, the thickness of seam subregion, armored concrete subregion, the first reinforced concrete floor, the second reinforced concrete floor
Respectively 40~60mm.
In above-mentioned technical proposal, in the junction of adjacent two panels tunnel segment structure, it is correspondingly connected with bolt location, is respectively set
Bolt hole, bolt hole make bolt be not in contact with concrete slightly larger than the diameter of bolt, and bolt length is equal to opening for bolt hole
Slot length.
Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
1, compared with longitudinal equivalent continuous rigidity model, the present invention establishes seam subregion for duct piece connector performance, more can
Embody influence of the seam deformation for tunnel overall deformation.
2, compared with correcting rigidity model, the present invention establishes seam subregion for connector and builds connection bolt, can
More true simulation seam opens deformation.
3, with more hinge ring models, beam-spring method, rigid plate-spring model, joint action phase is simulated with hinge or spring
Than the present invention establishes physical model using method for numerical simulation, can embody the spatial character of material.
4, compared with concrete strip coating method model, the present invention establishes physical model using method for numerical simulation, not only in layer
Subregion is carried out to layering and in circumferential direction, more can reasonably embody the spatial character and malformation performance of material.
5, compared with the numerical model for establishing contact surface, butt joint joint filler uses William-Warnke in the present invention
Broken ring model, is zero by its tensile strength, and the height that can be simulated in the presence of section of jurisdiction splaying effect and contact surface is non-thread
Sex chromosome mosaicism.So that deformation calculates, more efficient, result is more accurate.
6, connection bolt and concrete are avoided using the method for grooved bore to connection bolt and concrete contact problems
The calculating that the contact of material is brought is difficult to convergence problem.
Description of the drawings
Fig. 1 is the joint structure schematic diagram of the tunnel structural model in the embodiment of the present invention；
Fig. 2 is the tunnel structural model established using three-dimensional finite element in embodiment；
Fig. 3 is connection bolt model in embodiment；
Fig. 4 is the comparison line chart of seam joint open in embodiment；
Fig. 5 is the comparison line chart of embodiment center tap amount of deflection；
Fig. 6 is the comparison line chart that bolt drawing/pressure value is connected in embodiment；
Wherein：1, seaming zone, 2, seam subregion, 3, armored concrete area, 4, normal concrete area, the 5, first common coagulation
Soil layer, the 6, first reinforced concrete floor, the 7, second normal concrete layer, the 8, second reinforced concrete floor, 9, the common coagulation of third
Soil layer, 10, bolt, 11, bolt hole, 12, section of jurisdiction, 13, bridle iron, 14, seam.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments：
Embodiment：
A kind of structural model construction method of shield tunnel, including：
1, such as Fig. 1 carries out layering and zoning processing by material characteristics to tunnel structure to section of jurisdiction, and circumferential direction is divided on the whole：It connects
Stitch area 1, seam subregion 2, armored concrete area 3, normal concrete area 4.In layer to being divided into the first normal concrete layer 5, first
Reinforced concrete floor 6, the second normal concrete layer 7, the second reinforced concrete floor 8, third normal concrete layer 9.In seam crossing,
Equipped with bolt 10, separated by bolt hole 11 and rest part.Tunnel knot as shown in Figure 2 is established using three-dimensional finite element ANSYS
Structure model, wherein both sides section of jurisdiction 12 is arranged on bridle iron 13, is seam 14 between section of jurisdiction.
2, concrete unit uses solid65, concrete material to break ring model using William-Warnke, and reinforcing bar uses
Bilinearity equal strength hardening model.
3, reinforcing bar is modeled using monoblock type.
4, connection bolt is beam188 units, and bolt length is equal to effective length 11cm, is equal to slotting length, sees Fig. 3 institutes
Show.
5,1 thickness 5mm of seaming zone, ring model is broken using William-Warnke, and it is zero to simulate section of jurisdiction to take tensile strength
Open effect；And its compression strength is set as identical as steel, it causes to calculate to avoid concrete pressure break when being pressurized and not restrain.
6, the thickness of seam subregion 2, armored concrete subregion 3, the first reinforced concrete floor 6, the second reinforced concrete floor 8
For 50mm.
7, fig. 4 to fig. 6 is the calculated value using model of the present invention.As shown in figure 4, the joint stretching value value of the present invention and prison
Measured value is more identical, can more embody seam anamorphic effect；As shown in figure 5, the connector deflection value and monitor value of the present invention are more identical, more
Influence of the joint distortion for tunnel overall deformation can be embodied；Such as Fig. 6, the present invention considers the space of connection bolt and section of jurisdiction material
Characteristic, can not only bolt drawing/pressure can also calculate section of jurisdiction damage feature.
Claims (6)
1. a kind of structural model construction method of shield tunnel, it is characterised in that：Structural model is built using method for numerical simulation,
Shield tunnel construction is simulated according to material with damage performance difference in circumferential subregion and in layer to layering, using concrete cracking
It is contacted between section of jurisdiction；Using the seam of adjacent duct pieces of shield tunnel as initial position, the circumferential direction subregion includes seaming zone successively
（1）, seam subregion（2）, armored concrete subregion（3）, normal concrete area（4）；From outside to inside, the layer wraps successively to layering
Include the first normal concrete layer（5）, the first reinforced concrete floor（6）, the second normal concrete layer（7）, the second armored concrete
Layer（8）, third normal concrete layer（9）；Seaming zone（1）Material usesWilliam-WarnkeBroken ring model, tensile strength
It is set as zero, simulation section of jurisdiction is by section of jurisdiction splaying effect when pulling force；Its compression strength is set as identical as steel.
2. shield tunnel construction model construction method according to claim 1, it is characterised in that：Seaming zone（1）Width is set
It is set to 5~10 millimeters.
3. shield tunnel construction model construction method according to claim 1, it is characterised in that：Seam subregion（2）, it is common
Concrete region（4）, the first normal concrete layer（5）, the second normal concrete layer（7）, third normal concrete layer（9）Material
Parameter is arranged according to the concrete parameters of use.
4. shield tunnel construction model construction method according to claim 1, it is characterised in that：Armored concrete subregion
（3）, the first reinforced concrete floor（6）, the second reinforced concrete floor（8）, modeled using monoblock type.
5. the structural model construction method of shield tunnel according to claim 1, it is characterised in that：Seam subregion（2）, steel
Reinforced concrete subregion（3）, the first reinforced concrete floor（6）, the second reinforced concrete floor（8）Thickness be respectively 40~60mm.
6. shield tunnel construction model construction method according to claim 1, it is characterised in that：In adjacent two panels section of jurisdiction
The junction of structure, is correspondingly connected with bolt location, and bolt hole is respectively set, and bolt hole makes bolt and mix slightly larger than the diameter of bolt
Solidifying soil is not in contact, and bolt length is equal to the slotting length of bolt hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980409.3A CN106321115B (en) | 2016-11-08 | 2016-11-08 | A kind of shield tunnel construction model construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980409.3A CN106321115B (en) | 2016-11-08 | 2016-11-08 | A kind of shield tunnel construction model construction method |
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| CN106321115A CN106321115A (en) | 2017-01-11 |
| CN106321115B true CN106321115B (en) | 2018-09-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108150192B (en) * | 2018-01-22 | 2023-11-28 | 中铁第四勘察设计院集团有限公司 | Double-layer lining shield tunnel deformation joint structure and shield tunnel |
| CN109493710A (en) * | 2018-12-21 | 2019-03-19 | 同济大学 | The shield tunnel liner design methods and model of the circumferential assembled performance of analog |
| CN111259556B (en) * | 2020-01-20 | 2022-06-07 | 西南交通大学 | Safety evaluation method based on shield tunnel segment joint opening amount |
| CN112648017B (en) * | 2020-12-28 | 2022-07-29 | 中国科学院武汉岩土力学研究所 | Numerical method for simulating serious bias large deformation of tunnel |
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