CN110608053A - Structure for simulating shield tunnel circumferential weld joint - Google Patents
Structure for simulating shield tunnel circumferential weld joint Download PDFInfo
- Publication number
- CN110608053A CN110608053A CN201911042041.6A CN201911042041A CN110608053A CN 110608053 A CN110608053 A CN 110608053A CN 201911042041 A CN201911042041 A CN 201911042041A CN 110608053 A CN110608053 A CN 110608053A
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- Prior art keywords
- joint
- ring
- shield tunnel
- inter
- circumferential weld
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- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 238000007906 compression Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 16
- 238000010008 shearing Methods 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000011160 research Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
-
- 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
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a structure for simulating a shield tunnel circumferential weld joint, which relates to a circumferential weld between adjacent model segment rings and is characterized in that the structure comprises a plurality of inter-ring joint spring groups arranged at intervals along the circumferential weld, wherein each inter-ring joint spring group consists of longitudinal rib plates fixed on two sides of the circumferential weld and inter-ring joints arranged between the longitudinal rib plates; the longitudinal rib plates are fixed on the inner wall of the model pipe sheet ring, and two ends of the inter-ring joint are respectively fixed on the end faces of the longitudinal rib plates. The invention has the advantages that: the mechanical property of the circular seam joint of the model shield tunnel can be designed according to the requirements of the tensile and compressive rigidity and the shearing rigidity of the circular seam joint of the prototype shield tunnel, the elastic property of the circular seam joint is good, the transverse rigidity of the shield tunnel is not influenced, and the circular seam joint is suitable for indoor model tests.
Description
Technical Field
The invention belongs to the technical field of shield tunnels, and particularly relates to a structure for simulating a circumferential seam joint of a shield tunnel.
Background
The shield tunnel is a tubular structure formed by connecting pipe pieces through bolts, and the transverse rigidity of the shield tunnel is smaller than that of the shield tunnel in a homogeneous longitudinal-seam-free state due to the existence of longitudinal seams, and the rigidity ratio of the shield tunnel and the longitudinal seams is the transverse rigidity effective rate; similarly, due to the existence of the annular seam, the longitudinal rigidity of the shield tunnel is smaller than that in a homogeneous annular seam-free state, and the rigidity ratio of the shield tunnel and the homogeneous annular seam-free state is the longitudinal rigidity effective rate. In the process of shield tunnel cross section deformation and longitudinal bending deformation, the stress mechanisms of the segment longitudinal joint and the annular joint are different, so that the effective rate of transverse rigidity and the effective rate of longitudinal rigidity are greatly different.
When the shield tunnel related research is carried out by adopting a model test with a reduced proportion, the research on the influence of longitudinal uneven settlement of the shield tunnel and the like caused by short-distance foundation pit excavation, short-distance pile foundation construction, local surface pile loading, communication channel construction and train circulating load on the shield tunnel has the advantages of more simulation working conditions, less test time, low cost and the like. In the research, the influence of the rigidity of the circular seam joint needs to be considered, and if the bolt is directly connected with the pipe sheet ring, the tensile and compressive rigidity and the shear rigidity of the circular seam joint are difficult to design according to the requirement; if the problem of longitudinal rigidity reduction of the model shield tunnel is considered by adopting the homogeneous tube with the reduced wall thickness, the transverse rigidity of the segment ring of the shield tunnel cannot be simultaneously met.
However, for the model shield tunnel, when considering the effective problem of the transverse rigidity, a homogeneous circular ring (without longitudinal seam) with reduced thickness can be used to simulate a pipe sheet ring, or a longitudinal seam joint can be simulated by slotting at the position of the longitudinal seam joint (patent "tunnel model test method with variable rigidity of lining structure joint", application number: 201410175038.2), but when the reduction of the longitudinal rigidity of the tunnel by the circular seam is also considered by a homogeneous pipe with reduced thickness, the reduction of the transverse rigidity and the reduction of the longitudinal rigidity cannot be satisfied at the same time. In the patent 'lining model for shield tunnel longitudinal model test and manufacturing method' (application number: 201810293105.9), longitudinal seams are adopted and cut grooves are adopted, and annular seams are connected by longitudinal joint pieces, but when the longitudinal joint pieces are adopted for connection, the shear rigidity of the annular seam joint is inconvenient to control and even difficult to simulate, and the shear resistance between segment rings is one of important performances of the shield tunnel longitudinal rigidity.
Disclosure of Invention
The invention aims to provide a structure for simulating a shield tunnel circumferential weld joint according to the defects of the prior art, wherein a plurality of inter-ring joint spring groups are arranged on the circumferential weld between adjacent model pipe sheet rings, and the inter-ring joints are formed by connecting a rubber shear spring seat and a tension and compression steel spring seat in series, so that the tension and compression stiffness and the shear stiffness of the prototype shield tunnel circumferential weld joint are simulated, and an indoor model test is carried out.
The purpose of the invention is realized by the following technical scheme:
a structure for simulating a shield tunnel circumferential weld joint relates to a circumferential weld between adjacent model segment rings, and is characterized by comprising a plurality of inter-ring joint spring groups arranged at intervals along the circumferential weld, wherein each inter-ring joint spring group consists of longitudinal rib plates fixed on two sides of the circumferential weld and inter-ring joints arranged between the longitudinal rib plates; the longitudinal rib plates are fixed on the inner wall of the model pipe sheet ring, and two ends of the inter-ring joint are respectively fixed on the end faces of the longitudinal rib plates.
The arrangement position of the longitudinal rib plate on the model segment ring corresponds to the arrangement position of the circular seam connecting bolt on the prototype segment ring.
The inter-ring joint comprises a rubber shearing spring seat and a tension and compression steel spring seat which are connected in series, and the rubber shearing spring seat and the tension and compression steel spring seat are respectively arranged on one side of the circular seam.
The rubber shearing spring seat comprises a rubber shearing spring and end plates respectively arranged at two ends of the rubber shearing spring.
The tension and compression steel spring seat comprises two steel pipes which are nested with each other, a steel spring is sleeved on each steel pipe, and the outer end of each steel pipe is provided with an end plate.
The invention has the advantages that: the mechanical property of the circular seam joint of the model shield tunnel can be designed according to the requirements of the tensile and compressive rigidity and the shearing rigidity of the circular seam joint of the prototype shield tunnel, the elastic property of the circular seam joint is good, the transverse rigidity of the shield tunnel is not influenced, and the circular seam joint is suitable for indoor model tests.
Drawings
FIG. 1 is a schematic structural diagram of a simulated shield tunnel circumferential seam joint according to the present invention;
FIG. 2 is a schematic view showing the composition of the circular seam joint of the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:
referring to fig. 1-2, the labels 1-11 in the figures are: the device comprises a mould pipe sheet ring 1, an inter-ring joint spring group 2, an inter-ring joint 3, a longitudinal rib plate 4, a rubber shearing spring seat 5, a tension and compression steel spring seat 6, an end plate 7, a steel pipe 8, a steel pipe 9, a steel spring 10 and a rubber shearing spring 11.
Example (b): as shown in fig. 1 and 2, the embodiment specifically relates to a structure for simulating a shield tunnel circumferential weld joint, the structure is arranged at a circumferential weld between adjacent model segment rings 1, the structure includes a plurality of inter-ring joint spring groups 2 arranged at intervals along the circumferential weld between the adjacent model segment rings 1, the adjacent model segment rings 1 are connected through the inter-ring joint spring groups 2, and each inter-ring joint spring group 2 is composed of two longitudinal rib plates 4 and an inter-ring joint 3 arranged between the longitudinal rib plates 4.
As shown in fig. 1, longitudinal rib plates 4 are respectively arranged on two sides of each circular seam, and the longitudinal rib plates 4 and the inner wall surface of the model segment ring 4 can be fixed by welding or the like, wherein it should be noted that the precise arrangement positions of the longitudinal rib plates 4 correspond to the arrangement positions of the circular seam connecting bolts on the prototype shield segment ring; the two sides of the inter-ring joint 3 are connected with the longitudinal rib plates 4, the inter-ring joint 3 is specifically composed of a rubber shear spring seat 5 and a tension and compression steel spring seat 6, as shown in fig. 2, the rubber shear spring seat 5 is composed of a rubber shear spring 11 and end plates 7 arranged at two ends of the rubber shear spring 11; the tension and compression steel spring seat 6 comprises a steel pipe 8 and a steel pipe 9 which are nested with each other, an end plate 7 is fixedly arranged at the outer ends of the steel pipe 8 and the steel pipe 9, and a steel spring 10 is sleeved on the outer wall surfaces of the steel pipe 8 and the steel pipe 9, so that the tension and compression steel spring seat 6 is formed.
As shown in fig. 1 and 2, during installation, according to the tensile and shear resistance of the circumferential seam connecting bolt on the ring of the prototype shield segment, determining the shear stiffness and the tension and compression stiffness of the rubber shear spring seat 5 and the tension and compression steel spring seat 6 in the inter-ring joint 3, respectively attaching the end plate 7 on the rubber shear spring seat 5 and the end plate 7 of the tension and compression steel spring seat 6 to each other, abutting against and fixing them, and connecting them in series to form the inter-ring joint 3; and then the whole inter-ring joint 3 is arranged between the longitudinal rib plates 4 at two sides of the circular seam to form the inter-ring joint spring group 2.
The beneficial effect of this embodiment lies in: when the longitudinal mechanical properties of the shield tunnel need to be considered in the related research of the shield tunnel, such as the research on the influence of short-distance foundation pit excavation, short-distance pile foundation construction, local surface loading, communication channel construction, longitudinal uneven settlement of the shield tunnel caused by train circulating load and the like on the shield tunnel, the influence of the rigidity of the circumferential seam joint needs to be considered, and if the bolts are directly connected with the pipe sheet rings, the tensile and compression rigidity and the shearing rigidity of the circumferential seam joint are difficult to design as required; if the problem of longitudinal rigidity reduction of the model shield tunnel is considered by adopting the homogeneous tube with the reduced wall thickness, the transverse rigidity of the shield tunnel segment ring cannot be simultaneously satisfied (because the effective rate of the longitudinal rigidity and the effective rate of the transverse rigidity are greatly different). In the embodiment, a plurality of inter-ring joint spring groups are arranged on the annular seam between adjacent model pipe sheet rings, and the inter-ring joints are formed by connecting rubber shear spring seats and tension-compression steel spring seats in series, so that the tension-compression stiffness and the shear stiffness of the annular seam joint of the prototype shield tunnel are simulated, and an indoor model test is performed.
Claims (5)
1. A structure for simulating a shield tunnel circumferential weld joint relates to a circumferential weld between adjacent model segment rings, and is characterized by comprising a plurality of inter-ring joint spring groups arranged at intervals along the circumferential weld, wherein each inter-ring joint spring group consists of longitudinal rib plates fixed on two sides of the circumferential weld and inter-ring joints arranged between the longitudinal rib plates; the longitudinal rib plates are fixed on the inner wall of the model pipe sheet ring, and two ends of the inter-ring joint are respectively fixed on the end faces of the longitudinal rib plates.
2. The structure for simulating a circumferential seam joint of a shield tunnel according to claim 1, wherein the longitudinal ribs are provided at positions on the model segment ring corresponding to positions of circumferential seam connecting bolts on the prototype segment ring.
3. The structure of claim 1, wherein the inter-ring joint comprises a rubber shear spring seat and a tension and compression steel spring seat connected in series, and the rubber shear spring seat and the tension and compression steel spring seat are respectively disposed on one side of the circumferential seam.
4. The structure for simulating a circumferential seam joint of a shield tunnel according to claim 3, wherein the rubber shear spring seat comprises a rubber shear spring and end plates respectively disposed at two ends of the rubber shear spring.
5. The structure of the simulated shield tunnel circumferential weld joint of claim 3, characterized in that the tension and compression steel spring seat comprises two steel pipes which are nested with each other, the steel pipes are sleeved with steel springs, and the outer ends of the steel pipes are respectively provided with end plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911042041.6A CN110608053A (en) | 2019-10-30 | 2019-10-30 | Structure for simulating shield tunnel circumferential weld joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911042041.6A CN110608053A (en) | 2019-10-30 | 2019-10-30 | Structure for simulating shield tunnel circumferential weld joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110608053A true CN110608053A (en) | 2019-12-24 |
Family
ID=68895519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911042041.6A Pending CN110608053A (en) | 2019-10-30 | 2019-10-30 | Structure for simulating shield tunnel circumferential weld joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110608053A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH094388A (en) * | 1995-06-19 | 1997-01-07 | Daiho Constr Co Ltd | Water stop/aseismatic joint for segment in shield tunnel |
| JPH0932488A (en) * | 1995-07-19 | 1997-02-04 | Geostr Corp | Ring-to-ring joint for segment ring |
| JP2003184490A (en) * | 2001-12-13 | 2003-07-03 | Nippon Steel Corp | Primary lining part structure of shield tunnel |
| JP2006161283A (en) * | 2004-12-02 | 2006-06-22 | Jfe Engineering Kk | Fitting joint |
| CN101113596A (en) * | 2006-07-24 | 2008-01-30 | 同济大学 | Elastica loading unit capable of simulating formation resistance capability |
| CN101667220A (en) * | 2009-09-22 | 2010-03-10 | 同济大学 | Simulation method of shield tunnel joint structure |
| CN108571328A (en) * | 2018-06-29 | 2018-09-25 | 西南交通大学 | A kind of stratum interface segment shield tunnel segment lining structure and design method |
| CN108776033A (en) * | 2018-03-30 | 2018-11-09 | 西南交通大学 | A kind of lining model and production method for shield tunnel longitudinal direction model test |
| CN209195475U (en) * | 2018-12-27 | 2019-08-02 | 丁思库 | A kind of constructing tunnel atomization water curtain device for reducing dust |
| CN210768804U (en) * | 2019-10-30 | 2020-06-16 | 华东交通大学 | Structure for simulating shield tunnel circumferential weld joint |
-
2019
- 2019-10-30 CN CN201911042041.6A patent/CN110608053A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH094388A (en) * | 1995-06-19 | 1997-01-07 | Daiho Constr Co Ltd | Water stop/aseismatic joint for segment in shield tunnel |
| JPH0932488A (en) * | 1995-07-19 | 1997-02-04 | Geostr Corp | Ring-to-ring joint for segment ring |
| JP2003184490A (en) * | 2001-12-13 | 2003-07-03 | Nippon Steel Corp | Primary lining part structure of shield tunnel |
| JP2006161283A (en) * | 2004-12-02 | 2006-06-22 | Jfe Engineering Kk | Fitting joint |
| CN101113596A (en) * | 2006-07-24 | 2008-01-30 | 同济大学 | Elastica loading unit capable of simulating formation resistance capability |
| CN101667220A (en) * | 2009-09-22 | 2010-03-10 | 同济大学 | Simulation method of shield tunnel joint structure |
| CN108776033A (en) * | 2018-03-30 | 2018-11-09 | 西南交通大学 | A kind of lining model and production method for shield tunnel longitudinal direction model test |
| CN108571328A (en) * | 2018-06-29 | 2018-09-25 | 西南交通大学 | A kind of stratum interface segment shield tunnel segment lining structure and design method |
| CN209195475U (en) * | 2018-12-27 | 2019-08-02 | 丁思库 | A kind of constructing tunnel atomization water curtain device for reducing dust |
| CN210768804U (en) * | 2019-10-30 | 2020-06-16 | 华东交通大学 | Structure for simulating shield tunnel circumferential weld joint |
Non-Patent Citations (2)
| Title |
|---|
| 张冬梅;樊振宇;黄宏伟;: "考虑接头力学特性的盾构隧道衬砌结构计算方法研究", 岩土力学, no. 08, 10 August 2010 (2010-08-10), pages 2547 - 2552 * |
| 黄大维等: "《纵向残余顶推力对盾构隧道纵向刚度影响试验研究》", 《中国铁道科学》, vol. 44, no. 1, 31 January 2023 (2023-01-31), pages 142 - 152 * |
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