CN114526088B - Longitudinal joint equivalent model for researching shield tunnel segment dislocation - Google Patents
Longitudinal joint equivalent model for researching shield tunnel segment dislocation Download PDFInfo
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- CN114526088B CN114526088B CN202210085491.9A CN202210085491A CN114526088B CN 114526088 B CN114526088 B CN 114526088B CN 202210085491 A CN202210085491 A CN 202210085491A CN 114526088 B CN114526088 B CN 114526088B
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- longitudinal joint
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/083—Methods or devices for joining adjacent concrete segments
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention provides a longitudinal joint equivalent model for researching shield tunnel segment dislocation, relates to the technical field of shield tunnel model tests, and solves the technical problem that the existing shield tunnel segment test model cannot truly simulate dislocation deformation between segment rings when the segment rings float upwards. The longitudinal joint equivalent model is a flexible annular structure connected between two adjacent pipe sheet rings, and the shear rigidity of the longitudinal joint equivalent model is equal to the sum of the shear rigidities of all longitudinal joints between two adjacent original pipe sheet rings. The longitudinal joint equivalent model meets the principle of equivalent rigidity with the actual longitudinal joint of the duct piece, has certain flexibility, and can represent the phenomenon of dislocation among duct piece rings. The radial deformation difference between the segment rings is attached to the actual segment condition, and the model test is helpful to intuitively reveal the slab staggering deformation rule of the shield tunnel segment lining structure in the longitudinal direction.
Description
Technical Field
The invention relates to the technical field of shield tunnel model tests, in particular to a longitudinal joint equivalent model for researching shield tunnel segment dislocation.
Background
The shield tunnel generally adopts an assembled lining, and the duct pieces are main components in the assembled lining. In order to meet the bearing requirements of the structure, the strength and the rigidity of the duct piece are high, and the duct piece also has the performances of water resistance, permeability resistance and the like. A plurality of prefabricated arc-shaped duct pieces are assembled to form a complete duct piece ring, and then a plurality of duct piece rings are connected to form a shield tunnel section. As a combined structure, the shield tunnel lining is influenced by the longitudinal joint of the segment when radial deformation occurs, and the deformation among all segment rings is not uniform. The rigidity of the longitudinal joint of the duct piece is weaker than that of the duct piece, deformation and even damage are easier to occur under the action of external load, and then bending, slab staggering and other phenomena occur between the longitudinal upper duct piece ring linings. When the deformation is serious, the pipe piece joint is too large in opening, multiple secondary tunnel diseases are caused, the smoothness of the train track is reduced, underground water also permeates into the interior of the tunnel along the joint position, and the safety and the stability of the shield tunnel structure are further influenced even.
At present, a great deal of research aiming at the longitudinal direction of the shield tunnel at home and abroad explains and analyzes the longitudinal deformation mode and the characteristics of the tunnel by utilizing a plurality of methods such as finite element simulation calculation, theoretical derivation, model test and the like. However, because the overall stress of the actual segment structure is complex, the longitudinal structure of the shield tunnel is usually simplified during research and calculation. The existing simplified modes are mainly a longitudinal equivalent serialization model and a longitudinal pipe sheet ring-joint model. In a longitudinal equivalent serialization model, a tunnel structure formed by the pipe sheet rings and the joints is regarded as a uniform continuous beam structure in a rigidity equivalent mode, the calculation is simple, the application is convenient, and the dislocation deformation of the tunnel cannot be reflected. In the longitudinal pipe sheet ring-joint model, although deformation and mechanical response characteristics of the joint are considered to a certain extent, the calculation is complex, the joint rigidity is difficult to determine, and the practical application is difficult. In the aspect of model test research, the segment lining is generally regarded as a homogeneous circular ring structure, and the influence of the longitudinal joint of the segment is ignored. Even if the longitudinal joint is simulated by externally sticking the joint pieces to the joint positions of the segment structures in part of tests, the joint pieces can not have certain flexibility like the actual segment joints, and the joint pieces can lose effectiveness instantly when staggered deformation occurs among segment rings.
In conclusion, most researches on longitudinal slab staggering deformation of shield tunnel segments are carried out by means of theoretical model calculation, and the method is deficient in indoor model tests. Based on this, it is desirable to provide an equivalent model of a longitudinal joint capable of more truly simulating the dislocation deformation between the pipe sheet rings.
Disclosure of Invention
The invention aims to provide a longitudinal joint equivalent model for researching shield tunnel segment dislocation, and solves the technical problem that a shield tunnel segment test model in the prior art cannot truly simulate dislocation deformation between segment rings when the segment rings float upwards. The technical effects that can be produced by the preferred technical scheme of the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a longitudinal joint equivalent model for researching shield tunnel segment dislocation, wherein the longitudinal joint equivalent model is an annular structure which is connected between two adjacent segment rings and has flexibility, and the shearing rigidity of the longitudinal joint equivalent model is equal to the sum of the shearing rigidity of all longitudinal joints between two adjacent original segment rings.
According to a preferred embodiment, the shear stiffness of the equivalent model of the longitudinal joint is determined as follows:
based on formula K p ＝nξκ b G b A b /l b Calculating the sum K of the shear stiffness of all longitudinal joints between two adjacent original pipe sheet rings p ；
Wherein, K p The sum of the shear stiffness of all longitudinal joints between two adjacent original pipe sheet rings; n is the number of longitudinal joints between rings of the prototype segment; xi is a shear stiffness correction coefficient considering the friction force of the concave-convex tenon and the concrete pipe sheet; k is a radical of formula b Is the sinco shearing coefficient of the iron wood of the longitudinal joint between rings of the prototype segment; g b The shear modulus of the longitudinal joint between rings of the prototype segment; a. The b The area of the shearing surface of the longitudinal joint between rings of the prototype segment is shown; l. the b The length of the longitudinal joint between rings of the prototype segment;
based on the set geometric similarity ratio C between the segment ring and the prototype segment ring L Ratio similar to modulus of elasticity C E According to formula K m ＝K p /C E C L And obtaining the shear stiffness K of the equivalent model of the longitudinal joint through conversion m 。
According to a preferred embodiment, the shear modulus and the longitudinal width of the equivalent model of the longitudinal joint are determined as follows:
based on formula K m ＝κ s GA/l obtains the relation between the shear modulus G and the longitudinal width l of the equivalent model of the longitudinal joint,
wherein, κ s Is the sinco shear coefficient of the longitudinal joint equivalent model; g is the shear modulus of the equivalent model of the longitudinal joint; a is the shear plane area of the equivalent model of the longitudinal joint; and l is the longitudinal width of the equivalent model of the longitudinal joint.
According to a preferred embodiment, when the material of the longitudinal joint equivalent model is determined, the shear modulus of the longitudinal joint equivalent model (1) is a known quantity, and the shear stiffness K is based on the determined shear stiffness K of the longitudinal joint equivalent model m And formula K m ＝κ s And GA/l, obtaining the longitudinal width l of the equivalent model of the longitudinal joint.
According to a preferred embodiment, when the longitudinal width l of the longitudinal joint equivalent model is a known quantity, the shear stiffness K is then determined on the basis of the determined longitudinal joint equivalent model m And formula K m ＝κ s And GA/l, obtaining the shear modulus of the equivalent model of the longitudinal joint, and selecting the material of the corresponding equivalent model of the longitudinal joint based on the obtained shear modulus.
According to a preferred embodiment, said longitudinal joint equivalent model is a nitrile rubber ring uniformly arranged in the circumferential direction of said segment ring.
According to a preferred embodiment, the cross-sectional thickness of the equivalent model of the longitudinal joint is smaller than the cross-sectional thickness of the segment ring.
According to a preferred embodiment, two sides of the equivalent model of the longitudinal joint are connected with two adjacent segments by adhesive material to form a shield tunnel longitudinal structure.
Based on the technical scheme, the longitudinal joint equivalent model for researching shield tunnel segment dislocation at least has the following technical effects:
the longitudinal joint equivalent model for researching shield tunnel segment dislocation is an annular structure which is connected between two adjacent segment rings and has flexibility, and the shearing rigidity of the longitudinal joint equivalent model is equal to the sum of the shearing rigidity of all longitudinal joints between two adjacent original segment rings. Therefore, the longitudinal joint equivalent model of the application has certain flexibility, when uneven external force in the longitudinal direction acts on the shield tunnel structure, the stress deformation of adjacent segment rings is different, and due to the flexibility of the longitudinal joint equivalent model, a certain amount of stretching is allowed to occur, so that the dislocation phenomenon among the segment rings can be represented. The radial deformation of the segment ring is attached to the actual segment radial deformation, and the model test is helpful to intuitively reveal the slab staggering deformation rule of the shield tunnel segment lining structure in the longitudinal direction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a connection structure of an equivalent model of a longitudinal joint and a segment ring according to an exemplary embodiment of the present invention;
FIG. 2 is a partial schematic view of an equivalent model of a longitudinal joint in accordance with an exemplary embodiment of the present invention;
fig. 3 is a schematic diagram of a longitudinal structure of a shield tunnel formed by connecting pipe sheet rings of an equivalent model of a longitudinal joint according to an exemplary embodiment of the present invention.
In the figure: 1-longitudinal joint equivalent model; 2-ring of pipe sheet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is explained in detail in the following with the accompanying drawings of the specification.
As shown in fig. 1 to 3, the invention provides a longitudinal joint equivalent model for studying shield tunnel segment dislocation, the longitudinal joint equivalent model 1 is an annular structure which is connected between two adjacent segment rings 2 and has flexibility, and the shear stiffness of the longitudinal joint equivalent model 1 is equal to the sum of the shear stiffness of all longitudinal joints between two adjacent original segment rings. Therefore, the model has certain flexibility under the condition of meeting the equivalent shearing rigidity. After two adjacent segment rings 2 are connected together by utilizing the longitudinal joint equivalent model, when longitudinal uneven external force acts on the segment rings, the stress deformation of the segment rings is different, and because the longitudinal joint equivalent model has flexibility, a certain amount of stretching is allowed to occur, so that the phenomenon of dislocation among the segment rings can be represented. This makes the segment ring dislocation condition in vertical direction comparatively laminate with actual conditions, helps utilizing model test to comparatively reveal the shield tunnel segment lining structure dislocation law in vertical direction more directly perceivedly.
Further preferably, the equivalent model of the longitudinal joint for researching duct piece staggering in the shield tunnel similar model test is determined according to the following mode:
parameters of the equivalent model of the longitudinal joint need to be determined according to actual parameters in the supporting engineering and the model similarity ratio. Firstly, regarding the longitudinal joint of the actual duct piece as a short and thick beam structure, and calculating the sum of the shear stiffness of all the longitudinal joints between the actual duct piece rings by using the Cisco theory of iron wood:
step 1: based on formula K p ＝nξκ b G b A b /l b Calculating the sum K of the shear stiffness of all longitudinal joints between two adjacent original pipe sheet rings p (ii) a Wherein, K p The sum of the shear stiffness of all longitudinal joints between two adjacent original pipe sheet rings; n is the number of longitudinal joints between rings of the prototype segment; xi is a shear stiffness correction coefficient considering the friction force of the concave-convex tenon and the concrete pipe sheet; k is a radical of formula b The sinkholdie shear coefficient of the longitudinal joint between rings of the prototype segment; g b The shear modulus of the longitudinal joint between rings of the prototype segment; a. The b The shear surface area of the longitudinal joint between the rings of the prototype segment；l b Is the length of the longitudinal joint between rings of the prototype segment.
Step 2: based on the set geometric similarity ratio C between the segment ring and the prototype segment ring L Ratio similar to modulus of elasticity C E According to formula K m ＝K p /C E C L And the shear stiffness K of the equivalent model 1 of the longitudinal joint is obtained through conversion m 。
Further preferably, since the shear stiffness of the longitudinal joint equivalent model is uniformly distributed along the circumferential direction of the shield tunnel structure, the longitudinal joint equivalent model can also be regarded as an ironwood sicca beam model, and the shear modulus and the longitudinal width of the longitudinal joint equivalent model are determined as follows:
based on formula K m ＝κ s GA/l obtains the relation between the shear modulus G and the longitudinal width l of the equivalent model of the longitudinal joint, wherein kappa s Is the sinco shear coefficient of the longitudinal joint equivalent model; g is the shear modulus of the equivalent model of the longitudinal joint; a is the shear plane area of the longitudinal joint equivalent model, and is determined by the cross section thickness of the longitudinal joint equivalent model; and l is the longitudinal width of the equivalent model of the longitudinal joint. It should be noted that the longitudinal width of the equivalent model of the longitudinal joint refers to the width of the equivalent model of the longitudinal joint protruding from the edge of the pipe piece ring. Therefore, when the longitudinal width of the equivalent longitudinal joint model is determined, the size of the shear modulus of the model is determined accordingly, so that the longitudinal width and the shear modulus of the material can be adjusted according to requirements in different tests, and the simulation effect of the equivalent longitudinal joint model is most suitable for reality.
Preferably, when the material of the longitudinal joint equivalent model 1 is determined, the shear modulus of the longitudinal joint equivalent model 1 is a known quantity, and the determined shear stiffness K of the longitudinal joint equivalent model is based on m And formula K m ＝κ s GA/l, and obtaining the longitudinal width l of the equivalent model 1 of the longitudinal joint. Preferably, the butyronitrile rubber circle that vertical joint equivalent model 1 that this application chooseed for use was evenly set up for the hoop along section of jurisdiction ring 2 makes it have certain flexibility, satisfies simultaneously with the rigidity equivalence of the vertical joint of actual section of jurisdiction.
Preferably, when connecting longitudinallyWhen the longitudinal width l of the head equivalent model 1 is a known quantity, the determined shear stiffness K of the longitudinal joint equivalent model is used as a basis m And formula K m ＝κ s And GA/l, obtaining the shear modulus of the equivalent model 1 of the longitudinal joint, and selecting the material of the corresponding equivalent model of the longitudinal joint based on the obtained shear modulus.
Preferably, the cross-sectional thickness of the longitudinal joint equivalent model 1 is smaller than the cross-sectional thickness of the segment ring 2. The cross section thickness of the equivalent model of the longitudinal joint refers to the difference between the outer diameter and the inner diameter of the equivalent model of the longitudinal joint.
Preferably, two sides of the longitudinal joint equivalent model 1 are connected with two adjacent tube sheet rings 2 through viscous materials to form a shield tunnel longitudinal structure.
After the longitudinal width and the thickness of the longitudinal joint equivalent model are determined according to the scheme, the longitudinal joint equivalent model is manufactured, and finally the longitudinal joint equivalent model 1 and the segment ring 2 are connected by using a strong adhesive material to form a shield tunnel longitudinal structure.
In the similar model test process of the shield tunnel, the equivalent model of the longitudinal joint can be stretched when the stress conditions of all the segment rings are different, and then staggered platform deformation among the segment rings is simulated. The longitudinal joint equivalent model disclosed by the invention is simple in design principle, easy to manufacture and good in applicability in tests. Meanwhile, the problem that the dislocation deformation between the pipe piece rings cannot be simulated in a model test is solved by the longitudinal joint equivalent model, the dislocation phenomenon between the pipe piece rings in an actual shield tunnel can be reflected truly and visually in the model test by the longitudinal joint equivalent model, and the longitudinal joint equivalent model has certain practical value.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. A longitudinal joint equivalent model for researching shield tunnel segment dislocation is characterized in that the longitudinal joint equivalent model (1) is an annular structure which is connected between two adjacent segment rings (2) and has flexibility, the shear rigidity of the longitudinal joint equivalent model (1) is equal to the sum of the shear rigidities of all longitudinal joints between two adjacent original segment rings converted based on a geometric similarity ratio and an elastic modulus similarity ratio,
the shear stiffness of the longitudinal joint equivalent model (1) is determined as follows:
based on formula K p ＝nξκ b G b A b /l b Calculating the sum K of the shear stiffness of all longitudinal joints between two adjacent primary pipe sheet rings p ；
Wherein, K p For all longitudinal between two adjacent primary pipe sheet ringsThe sum of the shear stiffness to the joint; n is the number of longitudinal joints between rings of the prototype segment; xi is a shear stiffness correction coefficient considering the friction force of the tenon and the mortise and the concrete pipe sheet; k is a radical of formula b The sinkholdie shear coefficient of the longitudinal joint between rings of the prototype segment; g b The shear modulus of the longitudinal joint between rings of the prototype segment; a. The b The area of the shearing surface of the longitudinal joint between rings of the prototype segment; l b The length of the longitudinal joint between rings of the prototype segment;
based on the set geometric similarity ratio C between the segment ring and the prototype segment ring L Ratio similar to modulus of elasticity C E According to formula K m ＝K p /C E C L And the shear stiffness K of the equivalent model (1) of the longitudinal joint is obtained through conversion m 。
2. The longitudinal joint equivalent model for studying shield tunnel segment staggering according to claim 1, wherein the shear modulus and the longitudinal width of the longitudinal joint equivalent model (1) are determined as follows:
based on formula K m ＝κ s GA/l obtains the relation between the shear modulus G and the longitudinal width l of the equivalent model of the longitudinal joint,
wherein, κ s Is the Simpolo shear coefficient of the longitudinal joint equivalent model; g is the shear modulus of the equivalent model of the longitudinal joint; a is the shear plane area of the equivalent model of the longitudinal joint; and l is the longitudinal width of the equivalent model of the longitudinal joint.
3. The longitudinal joint equivalent model for researching shield tunnel segment dislocation according to claim 2, characterized in that when the material of the longitudinal joint equivalent model (1) is determined, the shear modulus of the longitudinal joint equivalent model (1) is a known quantity, and the shear stiffness K based on the determined longitudinal joint equivalent model is determined m And formula K m ＝κ s And GA/l, obtaining the longitudinal width l of the equivalent model (1) of the longitudinal joint.
4. The shield tunnel segment for research of claim 2Equivalent model of a staggered longitudinal joint, characterized in that when the longitudinal width l of said equivalent model (1) is a known quantity, it is based on the determined shear stiffness K of the equivalent model of a longitudinal joint m And formula K m ＝κ s And GA/l, obtaining the shear modulus of the longitudinal joint equivalent model (1), and selecting the material of the corresponding longitudinal joint equivalent model based on the obtained shear modulus.
5. The longitudinal joint equivalent model for researching shield tunnel segment dislocation according to claim 3, characterized in that the longitudinal joint equivalent model (1) is a nitrile rubber ring uniformly arranged along the circumferential direction of the segment ring (2).
6. The equivalent model of a longitudinal joint for studying shield tunnel segment staggering according to claim 1, characterized in that the cross-sectional thickness of said equivalent model of a longitudinal joint (1) is smaller than the cross-sectional thickness of said segment ring (2).
7. The equivalent model of the longitudinal joint for studying shield tunnel segment staggering according to claim 1, characterized in that both sides of the equivalent model of the longitudinal joint (1) are connected with two adjacent segment rings (2) by viscous material to form a shield tunnel longitudinal structure.
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| CN202210085491.9A CN114526088B (en) | 2022-01-25 | 2022-01-25 | Longitudinal joint equivalent model for researching shield tunnel segment dislocation |
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| CN104537162B (en) * | 2014-12-16 | 2017-07-11 | 上海交通大学 | Determine shield tunnel liner interannular seam resistance faulting of slab ends and open deformability method |
| CN108241783B (en) * | 2018-01-05 | 2019-08-02 | 浙江大学城市学院 | The shield tunnel Method for Calculating Deformation of section of jurisdiction faulting of slab ends and rotation is considered under a kind of ground preloading simultaneously |
| CN108776033B (en) * | 2018-03-30 | 2023-09-22 | 西南交通大学 | Lining model for shield tunnel longitudinal model test and manufacturing method |
| CN108932902B (en) * | 2018-06-22 | 2021-02-02 | 同济大学 | Lining ring model design method capable of simulating shield tunnel circumferential joint |
| CN210768804U (en) * | 2019-10-30 | 2020-06-16 | 华东交通大学 | Structure for simulating shield tunnel circumferential weld joint |
| CN111222275B (en) * | 2020-01-07 | 2022-08-02 | 河海大学 | Method for establishing segment ring floating and dislocation fine model separated from shield tail |
| CN113361169B (en) * | 2021-06-10 | 2022-04-22 | 安徽省建筑科学研究设计院 | Efficient prediction method for longitudinal deformation of shield tunnel caused by surface burst loading |
| CN113959856B (en) * | 2021-10-25 | 2023-09-08 | 福州大学 | Test method for simulating longitudinal bending resistance of shield tunnel |
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