CN207194906U - Precast lining structure for tunnel model test - Google Patents
Precast lining structure for tunnel model test Download PDFInfo
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- CN207194906U CN207194906U CN201720586028.7U CN201720586028U CN207194906U CN 207194906 U CN207194906 U CN 207194906U CN 201720586028 U CN201720586028 U CN 201720586028U CN 207194906 U CN207194906 U CN 207194906U
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- tunnel
- exterior sheathing
- model
- inner template
- model test
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Abstract
It the utility model is related to the precast lining structure for tunnel model test, precast lining structure wherein for tunnel model test includes base, is located at the mould that base upper section is in tunnel contour vertically, the mould includes inner template and exterior sheathing, the inner template and exterior sheathing form by some sections of circular arc steel plate splicings, the cavity formed between inner template and exterior sheathing is interval with barrier flaps, gypsum slurries are cast with several separate chambers formed between inner template, exterior sheathing and barrier flaps, soil pressure sensor is embedded with the separate chamber.For the utility model compared with the tunnel-liner model of traditional one-piece casting, pin-connected panel tunnel-liner model preferably simulation face partial excavation, lining cutting can be segmented the practice of construction process applied；The pre-buried miniature soil pressure sensor in lining cutting piecemeal simultaneously, it is convenient to measure the contact between liner structure and country rock, avoid traditional external labeling type sensor to the resulting adverse effect of model test.
Description
Technical field：
It the utility model is related to a kind of precast lining structure for tunnel model test.
Background technology：
With the fast development of China Higher level highway, railway, the construction scale of mountain tunnel is also unprecedented with building difficulty
Increase.On the other hand, the complexity due to ground and Tunnel Engineering in itself, in addition to theory analysis, field observation and numerical simulation,
Model test method has increasingly becomed a kind of important means of Tunnel Engineering association area research.
Model test is by certain geometry, physical relation, replaces prototype to carry out testing research with model, and research is tied
Fruit is used for the test method of prototype.From domestic and international disclosed documents and materials, in the related model test of Tunnel Engineering, its
Liner structure model is typically in the mould of specific dimensions, is poured and is built up using gypsum slurries or cement bonded sand slurries disposable whole body
Type.But in engineering practice, mountain tunnel generally use face partial excavation, liner structure are segmented the New Austrian Tunneling Method applied
Construction, therefore the tunnel-liner model of one-piece casting formula, can not simulate practice of construction process.
On the other hand, during carrying out model test, foil gauge or miniature need to be posted in the outer surface of liner structure model
Soil pressure sensor, to measure the physical quantitys such as the contact between the stress of liner structure, country rock lining cutting.But through likelihood ratio reduced scale
Tunnel model afterwards, its physical dimension is smaller, and various external labeling type measurement sensors（And its lead-foot-line）Occupy suitable body
Product, this will produce considerable influence to model test result.
The content of the invention：
The purpose of this utility model is to provide a kind of precast lining structure for tunnel model test, and this is used for tunnel
The precast lining of road model test is reasonable in design, and compared with the tunnel-liner model of traditional one-piece casting, it can be preferable
The practice of construction process that simulation face partial excavation, lining cutting segmentation apply.
The utility model is used for the precast lining structure of tunnel model test, it is characterised in that：Including base, vertically set
It is in the mould of tunnel contour in base upper section, the mould includes inner template and exterior sheathing, and the inner template and exterior sheathing are equal
Formed by some sections of circular arc steel plate splicings, the cavity formed between inner template and exterior sheathing is interval with barrier flaps, in internal model
Gypsum slurries are cast with several separate chambers formed between plate, exterior sheathing and barrier flaps, are buried in the separate chamber
There is soil pressure sensor.
Further, the outer surface of above-mentioned inner template, the inner surface of exterior sheathing are coated with releasing agent layer, the barrier flaps
Two sides be also coated with releasing agent layer.
Further, above-mentioned barrier flaps are the flake aluminum in " Ω " shape.
Further, above-mentioned base is PVC cystosepiments.
Further, above-mentioned releasing agent is vaseline or butter, and the circular arc steel plate is circular arc galvanized steel plain sheet, described
Gypsum slurries are that plaster of Paris presses 2 with water：1 ratio stirs the stream plastic state to be formed.
The preparation method that the utility model is used for the precast lining structure of tunnel model test, it is described to be used for tunnel model
The precast lining structure of experiment includes base, is located at the mould that base upper section is in tunnel contour vertically, and the mould includes
Inner template and exterior sheathing, the inner template and exterior sheathing form by some sections of circular arc steel plate splicings, inner template and exterior sheathing
Between the cavity that is formed be interval with barrier flaps, several separate chambers formed between inner template, exterior sheathing and barrier flaps
Gypsum slurries are inside cast with, soil pressure sensor is embedded with the separate chamber；During making, by tunnel prototype by design geometry
The likelihood ratio carries out reduced scale, and then according to the inside and outside contour size of lining cutting structural model after reduced scale, customizes corresponding mould, mould
Inner template and exterior sheathing form by some sections of circular arc steel plate splicings；The base of mould uses PVC cystosepiments；The barrier of mould
Piece is using the flake aluminum for bending to Ω shapes；In inner template lateral surface and exterior sheathing medial surface smearing release agent in order to which the later stage takes off
Mould, liner structure model inside and outside contour line position is depicted on base, by inner template and exterior sheathing insertion base, obstructed
Piece both sides smearing release agent, and between it is inserted into inner and outer template at a certain distance, be allowed to form some separate chambers；Then exist
In above-mentioned chamber independently of each other, the gypsum slurries allocated in specific proportions are injected, after it air-dries shaping, being formed, there is Ω shapes to connect
The precast lining structure piecemeal of head；In casting process, can in liner structure piecemeal pre-buried miniature soil pressure sensor, so as to
During later stage carries out model test, the contact between specific location liner structure and country rock is measured；Then bottom is removed
Seat, deviates from mould successively by the liner structure piecemeal of air-dried shaping；When carrying out model test, with the partial excavation of face,
Each liner structure piecemeal is assembled successively,, should be in the assembled seam crossing of each piecemeal during assembled to simulate practice of construction process
Seccotine is smeared, to ensure to be reliably connected between each piecemeal.
The utility model advantage is：Compared with the tunnel-liner model of traditional one-piece casting, pin-connected panel tunnel-liner mould
Type preferably simulation face partial excavation, lining cutting can be segmented the practice of construction process applied；It is simultaneously pre-buried in lining cutting piecemeal
Miniature soil pressure sensor, it is convenient to measure the contact between liner structure and country rock, avoid traditional external labeling type sensor
To the resulting adverse effect of model test.
Brief description of the drawings：
Fig. 1 is the top view for pouring device of precast lining structural model；
Fig. 2 is the side view of the single liner structure piecemeal of pre-buried miniature soil pressure sensor；
Fig. 3 is the top view of the assembled tunnel lining structure model completed in part；
In figure：1- inner templates, 2- exterior sheathings, 3- bases, 4- barrier flaps, the chamber of 5- independences, 6- liner structure piecemeals, 7-
Miniature soil pressure sensor, 8- assembly seams.
Embodiment：
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
The precast lining structure that the utility model is used for tunnel model test includes base 3, vertical be located on base is cut
Face is in the mould of tunnel contour, and the mould includes inner template 1 and exterior sheathing 2, and the inner template 1 and exterior sheathing 2 are by some
Section circular arc steel plate splicing forms, and the cavity formed between inner template and exterior sheathing is interval with barrier flaps 4, in inner template, outside
Gypsum slurries are cast with several separate chambers 5 formed between template and barrier flaps, are embedded with the separate chamber micro-
Type soil pressure sensor 7.
Further, it is coated with releasing agent for the ease of the demoulding, the outer surface of above-mentioned inner template, the inner surface of exterior sheathing
Layer, the two sides of the barrier flaps are also coated with releasing agent layer.
Further, in order to reasonable in design, above-mentioned barrier flaps 4 are the flake aluminum in " Ω " shape.
Further, in order to easy to make, above-mentioned base is PVC cystosepiments.
Further, above-mentioned releasing agent is vaseline or butter, and the circular arc steel plate is circular arc galvanized steel plain sheet, described
Gypsum slurries are that plaster of Paris presses 2 with water：1 ratio stirs the stream plastic state to be formed.
The preparation method that the utility model is used for the precast lining structure of tunnel model test, it is described to be used for tunnel model
The precast lining structure of experiment includes base, is located at the mould that base upper section is in tunnel contour vertically, and the mould includes
Inner template and exterior sheathing, the inner template and exterior sheathing form by some sections of circular arc steel plate splicings, inner template and exterior sheathing
Between the cavity that is formed be interval with barrier flaps, several separate chambers formed between inner template, exterior sheathing and barrier flaps
Gypsum slurries are inside cast with, soil pressure sensor is embedded with the separate chamber；During making, by tunnel prototype by design geometry
The likelihood ratio carries out reduced scale, and then according to the inside and outside contour size of lining cutting structural model after reduced scale, customizes corresponding mould, mould
Inner template and exterior sheathing form by some sections of circular arc steel plate splicings；The base of mould uses PVC cystosepiments；The barrier of mould
Piece is using the flake aluminum for bending to Ω shapes；In inner template lateral surface and exterior sheathing medial surface smearing release agent in order to which the later stage takes off
Mould, liner structure model inside and outside contour line position is depicted on base, by inner template and exterior sheathing insertion base, obstructed
Piece both sides smearing release agent, and between it is inserted into inner and outer template at a certain distance, be allowed to form some separate chambers；Then exist
In above-mentioned chamber independently of each other, the gypsum slurries allocated in specific proportions are injected, after it air-dries shaping, being formed, there is Ω shapes to connect
The precast lining structure piecemeal of head；In casting process, can in liner structure piecemeal pre-buried miniature soil pressure sensor, so as to
During later stage carries out model test, the contact between specific location liner structure and country rock is measured；Then bottom is removed
Seat, deviates from mould successively by the liner structure piecemeal of air-dried shaping；When carrying out model test, with the partial excavation of face,
Each liner structure piecemeal is assembled successively,, should be in the assembled seam crossing of each piecemeal during assembled to simulate practice of construction process
Seccotine is smeared, to ensure to be reliably connected between each piecemeal.
It is specific to make embodiment（Such as Fig. 1-3）：
1）Using four lane road tunnel as prototype, according to its excavation contour line and lining thickness at initial stage, by 1：20 geometry
The likelihood ratio carries out reduced scale.The planar dimension of lining model is after reduced scale：Width 186cm, height 112cm, thickness 2cm.
2）According to the physical dimension of lining model after reduced scale, corresponding mould is customized.The left-half of inner template 1 and right side
Point, it is respectively 92cm, 51cm, 15cm, 220cm circular arc galvanized steel plain sheet by 4 sections of radiuses（Thickness 3mm）Composition, above-mentioned 8 sections
Circular arc galvanized steel plain sheet forms inner template 1 by welding.
3）The left-half of exterior sheathing 2 and right half part, it is respectively 94cm, 53cm, 17cm, 222cm circle by 4 sections of radiuses
Arc galvanized steel plain sheet（Thickness 3mm）Composition, above-mentioned 8 sections of circular arc galvanized steel plain sheets form inner template 2 by welding.
4）By length 6cm aluminium flake（Thickness 2mm）Ω shapes are bent to as barrier flaps.
5）In the lateral surface of inner template 1, the uniform smearing release agent of the medial surface of exterior sheathing 2 and the both sides of barrier flaps 4（Vaseline or Huang
Oil）, in order to which the later stage is stripped.
6）Using the PVC cystosepiments of 5cm thickness as mold base, depict on the base 3 for laying inner and outer template
Embedded slot, inner template 1 and exterior sheathing 2 are embedded in base 3.16 pieces of barrier flaps 4 are inserted at a certain distance inner and outer template it
Between, it is allowed to form 16 separate chambers 5.
6）Plaster of Paris and water are pressed 2：1 ratio stirs to form the gypsum slurries of stream plastic state, and is implanted sequentially above-mentioned
In each separate chamber 5.Simultaneously can in the chamber of vault and abutment wall pre-buried miniature soil pressure sensor 7, be easy to the later stage to measure
Vault and the contact at abutment wall.
7）After gypsum slurries air-dry shaping completely, base 3 is first removed, then pushes away by people's force vibration the mode such as drag, by wind
The liner structure piecemeal 6 of dry forming deviates from mould successively.
8）It is according to the partial excavation situation of face, each liner structure piecemeal 6 is assembled successively when carrying out model test,
And smear seccotine in assembled seam crossing 8.Using the precast lining structural model described in this patent, face branch can be simulated
Excavate, the practice of construction process that lining cutting segmentation applies；And ad-hoc location can easily be measured by miniature soil pressure sensor 7
Locate the contact between liner structure and country rock.
The utility model advantage is：Compared with the tunnel-liner model of traditional one-piece casting, pin-connected panel tunnel-liner mould
Type preferably simulation face partial excavation, lining cutting can be segmented the practice of construction process applied；It is simultaneously pre-buried in lining cutting piecemeal
Miniature soil pressure sensor, it is convenient to measure the contact between liner structure and country rock, avoid traditional external labeling type sensor
To the resulting adverse effect of model test.
The foregoing is only preferred embodiment of the present utility model, it is all done according to present utility model application the scope of the claims it is equal
Deng change and modification, it should all belong to covering scope of the present utility model.
Claims (4)
- A kind of 1. precast lining structure for tunnel model test, it is characterised in that：Including base, vertically it is located on base Section is in the mould of tunnel contour, and the mould includes inner template and exterior sheathing, and the inner template and exterior sheathing are by some sections Circular arc steel plate splicing forms, and the cavity formed between inner template and exterior sheathing is interval with barrier flaps, in inner template, exterior sheathing Gypsum slurries are cast with several separate chambers formed between barrier flaps, soil pressure biography is embedded with the separate chamber Sensor.
- 2. the precast lining structure according to claim 1 for tunnel model test, it is characterised in that：The internal model The outer surface of plate, the inner surface of exterior sheathing are coated with releasing agent layer, and the two sides of the barrier flaps are also coated with releasing agent layer.
- 3. the precast lining structure according to claim 1 for tunnel model test, it is characterised in that：The barrier Piece is the aluminium flake in " Ω " shape.
- 4. the precast lining structure according to claim 1 for tunnel model test, it is characterised in that：The base For PVC cystosepiments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720586028.7U CN207194906U (en) | 2017-05-24 | 2017-05-24 | Precast lining structure for tunnel model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720586028.7U CN207194906U (en) | 2017-05-24 | 2017-05-24 | Precast lining structure for tunnel model test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207194906U true CN207194906U (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720586028.7U Expired - Fee Related CN207194906U (en) | 2017-05-24 | 2017-05-24 | Precast lining structure for tunnel model test |
Country Status (1)
| Country | Link |
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| CN (1) | CN207194906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577318A (en) * | 2020-04-17 | 2020-08-25 | 中国海洋大学 | Tunnel long-distance excavation supporting construction device suitable for model test |
-
2017
- 2017-05-24 CN CN201720586028.7U patent/CN207194906U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577318A (en) * | 2020-04-17 | 2020-08-25 | 中国海洋大学 | Tunnel long-distance excavation supporting construction device suitable for model test |
| CN111577318B (en) * | 2020-04-17 | 2021-02-26 | 中国海洋大学 | Tunnel long-distance excavation supporting construction device suitable for model test |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 Termination date: 20200524 |
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| CF01 | Termination of patent right due to non-payment of annual fee |