CN115961964B - Organic glass sleeve installation method of composite earth pressure shield construction mechanism experimental device - Google Patents
Organic glass sleeve installation method of composite earth pressure shield construction mechanism experimental device Download PDFInfo
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- CN115961964B CN115961964B CN202310018495.XA CN202310018495A CN115961964B CN 115961964 B CN115961964 B CN 115961964B CN 202310018495 A CN202310018495 A CN 202310018495A CN 115961964 B CN115961964 B CN 115961964B
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- organic glass
- glass sleeve
- steel skeleton
- sleeve
- earth pressure
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- 239000011521 glass Substances 0.000 claims abstract description 103
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 69
- 239000010959 steel Substances 0.000 claims abstract description 69
- 239000002131 composite material Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 239000005457 ice water Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 15
- 230000008602 contraction Effects 0.000 abstract description 5
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 229920005372 Plexiglas® Polymers 0.000 description 34
- 239000004926 polymethyl methacrylate Substances 0.000 description 31
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Securing Of Glass Panes Or The Like (AREA)
- Gasket Seals (AREA)
Abstract
The invention belongs to the field of composite earth pressure shield experimental devices, and discloses an organic glass sleeve mounting method of a composite earth pressure shield construction mechanism experimental device, which comprises the following steps: cooling the organic glass sleeve to be lower than room temperature, and reducing the size of the cooled organic glass sleeve; sleeving the gasket outside the cooled organic glass sleeve to form a pre-assembly, wherein the outer diameter of the pre-assembly is smaller than the inner diameter of the steel skeleton; packaging the preassembled component into a steel skeleton; the organic glass sleeve is warmed to room temperature, the size of the organic glass sleeve is increased, and the organic glass sleeve and the steel skeleton squeeze the gasket. The invention applies the principle of thermal expansion and cold contraction to the installation of the organic glass sleeve and the steel skeleton, the organic glass sleeve is contracted due to cold, the size is reduced, the outer diameter of the pre-assembly is smaller than the inner diameter of the steel skeleton, the pre-assembly can be easily installed in the steel skeleton, the assembly is simple and convenient, the assembly efficiency is high, the organic glass sleeve or the steel skeleton is not required to be opened, and the mechanical property of the whole structure is better.
Description
Technical Field
The invention relates to the field of composite earth pressure shield experimental devices, in particular to an organic glass sleeve mounting method of a composite earth pressure shield construction mechanism experimental device.
Background
The artificial stratum storage barrel is used in the composite earth pressure shield construction mechanism experimental device. The artificial stratum storage barrel comprises an organic glass sleeve and a steel skeleton. The organic glass sleeve is sleeved in the steel skeleton, and a rubber gasket is arranged at the contact position of the organic glass sleeve and the steel skeleton.
The pressure of about 0.3Mpa is kept in the working process of the composite earth pressure shield construction mechanism experimental device, the pressure is transmitted to the steel skeleton by the organic glass sleeve, and the steel skeleton bears the load. Thus, a tight fit between the plexiglas sleeve and the steel skeleton is required, with the rubber gasket therebetween being compacted.
However, because the organic glass sleeve is transversely plugged into the steel skeleton, if no gap exists between the organic glass sleeve and the steel skeleton, the organic glass sleeve cannot be plugged, and if the gap is large, the effect of tightly attaching the organic glass sleeve and the steel skeleton cannot be achieved. If the organic glass sleeve or the steel skeleton is assembled again through an opening, the mechanical property of the whole structure can be affected.
Disclosure of Invention
The invention aims to provide an organic glass sleeve mounting method of a composite earth pressure shield construction mechanism experimental device, which can smoothly mount an organic glass sleeve in a steel skeleton, ensure that the organic glass sleeve and the steel skeleton are tightly mounted, and have better mechanical properties of the whole structure without an opening on the organic glass sleeve or the steel skeleton.
In order to achieve the above object, the following technical scheme is provided:
An organic glass sleeve installation method of a composite earth pressure shield construction mechanism experimental device is used for installing an organic glass sleeve into a steel skeleton and comprises the following steps of:
s1, cooling the organic glass sleeve to be lower than room temperature, and reducing the size of the cooled organic glass sleeve;
S2, sleeving a gasket outside the cooled organic glass sleeve to form a pre-assembly, wherein the outer diameter of the pre-assembly is smaller than the inner diameter of the steel skeleton;
s3, loading the preassembly into the steel skeleton;
And S4, heating the organic glass sleeve to the room temperature, and enabling the size to be large, wherein the organic glass sleeve and the steel skeleton squeeze the gasket.
As an alternative scheme of the organic glass sleeve mounting method of the composite earth pressure shield construction mechanism experimental device, the room temperature is set to be a ℃, the organic glass sleeve is cooled from the room temperature a ℃ to the cooling temperature B ℃, the outer diameter of the organic glass sleeve at the room temperature a ℃ is a mm, the outer diameter of the organic glass sleeve at the cooling temperature B ℃ is B mm, and then a-b=axc× (a-B), wherein C is the thermal expansion coefficient of the organic glass sleeve.
As an alternative scheme of the organic glass sleeve installation method of the composite earth pressure shield construction mechanism experimental device, the cooling temperature is 0 ℃.
As an alternative to the installation method of the organic glass sleeve of the composite earth pressure shield construction mechanism experimental device of the present invention, the organic glass sleeve is placed into an ice-water mixture so that the organic glass sleeve is cooled to the cooling temperature of 0 ℃.
As an alternative to the organic glass sleeve installation method of the composite earth pressure shield construction mechanism experimental device, the outer diameter of the preassembly is 2mm smaller than the inner diameter of the steel skeleton.
As an alternative scheme of the organic glass sleeve installation method of the composite earth pressure shield construction mechanism experimental device, the room temperature is 20 ℃.
As an alternative scheme of the organic glass sleeve installation method of the composite earth pressure shield construction mechanism experimental device, A is 1217mm, and B is 1214mm.
As an alternative scheme of the organic glass sleeve installation method of the composite earth pressure shield construction mechanism experimental device, the inner diameter of the steel skeleton is 1222mm.
As an alternative to the organic glass sleeve mounting method of the composite earth pressure shield construction mechanism experimental device, the thickness of the gasket when not extruded is 3mm.
As an alternative scheme of the organic glass sleeve installation method of the composite earth pressure shield construction mechanism experimental device, the gasket is a rubber gasket.
The beneficial effects of the invention are as follows:
The organic glass sleeve mounting method of the composite earth pressure shield construction mechanism experimental device provided by the invention is used for mounting the organic glass sleeve into the steel skeleton, and cooling the organic glass sleeve based on the principle of thermal expansion and cold contraction, so that the organic glass sleeve is contracted due to cold, and the size is reduced. Before the cooled organic glass sleeve is installed in the steel skeleton, the gasket is sleeved outside the organic glass sleeve to form the pre-assembly. Because the external diameter of the pre-assembly is smaller than the internal diameter of the steel skeleton, the pre-assembly can be easily assembled into the steel skeleton, the assembly is simple and convenient, the assembly efficiency is high, an organic glass sleeve or a steel skeleton is not required to be opened, and the mechanical property of the whole structure is better. Then, the organic glass sleeve is heated to room temperature, and the organic glass sleeve is heated to expand, so that the size is increased, the gap between the outer wall of the organic glass sleeve and the inner wall of the steel skeleton is reduced, and the gasket is extruded by the organic glass sleeve and the steel skeleton, so that the organic glass sleeve and the steel skeleton are tightly installed. The invention applies the principle of thermal expansion and cold contraction to the installation of the organic glass sleeve and the steel skeleton creatively, has simple and convenient assembly and high assembly efficiency, does not need to open the organic glass sleeve or the steel skeleton, and has better mechanical property of the whole structure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram showing an assembly of a plexiglas sleeve, a gasket and a steel skeleton according to an embodiment of the invention;
FIG. 2 is a second schematic view of an assembly of a plexiglas sleeve, gasket and steel skeleton according to an embodiment of the invention;
FIG. 3 is a schematic view of a plexiglas sleeve (at 20 ℃ C. At room temperature) provided in accordance with an embodiment of the invention;
FIG. 4 is a schematic view of a plexiglas sleeve (at a cooling temperature of 0 ℃) provided in an embodiment of the invention;
FIG. 5 is a schematic illustration of a plexiglas sleeve and gasket (at a cooling temperature of 0 ℃) provided in accordance with an embodiment of the invention;
FIG. 6 is a schematic illustration of a plexiglas sleeve and gasket according to an embodiment of the invention being encased in a steel skeleton (at a cooling temperature of 0 ℃);
fig. 7 is a schematic view of a plexiglas sleeve and gasket according to an embodiment of the invention being incorporated into a steel skeleton (at room temperature 20 ℃).
Reference numerals:
1. A plexiglass sleeve; 2. a steel skeleton; 3. and a gasket.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 and 2, the present embodiment provides a method for installing an organic glass sleeve 1 into a steel skeleton 2 of a composite earth pressure shield construction mechanism experimental device, the method comprising the steps of:
S1, cooling the organic glass sleeve 1 to be lower than the room temperature, and reducing the size of the cooled organic glass sleeve 1.
Based on the principle of thermal expansion and cold contraction, the organic glass sleeve 1 is cooled, and the organic glass sleeve 1 contracts due to the cooling, so that the size is reduced.
S2, sleeving the gasket 3 outside the cooled organic glass sleeve 1 to form a pre-assembly, wherein the outer diameter of the pre-assembly is smaller than the inner diameter of the steel skeleton 2.
Before the cooled plexiglas sleeve 1 is put into the steel skeleton 2, the gasket 3 is sleeved outside the plexiglas sleeve 1. Since the size of the plexiglas sleeve 1 after cooling becomes small, the gasket 3 fitted over the plexiglas sleeve 1 is not tightened by the plexiglas sleeve 1 or the gasket 3 is tightened by the plexiglas sleeve 1, but the deformation of the gasket 3 is small at this time. The gasket 3 is illustratively a rubber gasket.
And S3, packaging the preassembled component into the steel skeleton 2.
Because the external diameter of the pre-assembly is smaller than the internal diameter of the steel skeleton 2, the pre-assembly can be easily assembled into the steel skeleton 2, the assembly is simple and convenient, the assembly efficiency is high, the organic glass sleeve 1 or the steel skeleton 2 is not required to be opened, and the mechanical property of the whole structure is better. Illustratively, the outer diameter of the package is 2mm smaller than the inner diameter of the steel skeleton 2, facilitating the packaging of the package into the steel skeleton 2 without the need to cool the plexiglas sleeve 1 to an excessively low temperature.
And S4, the organic glass sleeve 1 is heated to room temperature, the size of the organic glass sleeve is increased, and the organic glass sleeve 1 and the steel skeleton 2 squeeze the gasket 3.
The organic glass sleeve 1 warms to room temperature, namely the organic glass sleeve 1 is heated and expands, so that the size becomes larger, the gap between the outer wall of the organic glass sleeve 1 and the inner wall of the steel skeleton 2 becomes smaller, and the gasket 3 is extruded by the organic glass sleeve 1 and the steel skeleton 2, so that the tight installation of the organic glass sleeve 1 and the steel skeleton 2 is realized.
In the organic glass sleeve installation method of the composite earth pressure shield construction mechanism experimental device provided by the embodiment, the thermal expansion and contraction principle is creatively applied to the installation of the organic glass sleeve 1 and the steel skeleton 2, the assembly is simple and convenient, the assembly efficiency is high, the organic glass sleeve 1 or the steel skeleton 2 is not required to be opened, and the mechanical property of the whole structure is better.
Assuming that the room temperature is a ℃, the plexiglas sleeve 1 is cooled from the room temperature a ℃ to a cooling temperature B ℃, the outside diameter of the plexiglas sleeve 1 at the room temperature a ℃ is Amm, the outside diameter of the plexiglas sleeve 1 at the cooling temperature B ℃ is B mm, a-b=a×c× (a-B), wherein C is the thermal expansion coefficient of the plexiglas sleeve 1. Based on the outside diameter of the plexiglas sleeve at room temperature, the inside diameter of the steel skeleton 2 at room temperature, the initial thickness of the gasket 3, the reduction in the size of the plexiglas sleeve 1 can be approximately determined, and thus the cooling temperature to which the plexiglas sleeve 1 needs to be cooled.
As shown in fig. 3 to 7, in the present example, the thermal expansion coefficient c=130×10 -6/°c of the plexiglass (polymethyl methacrylate), the room temperature is 20 ℃, the cooling temperature is 0 ℃, the inside diameter of the plexiglass sleeve 1 at the room temperature of 20 ℃ is 1200mm, the outside diameter a is 1217mm, the thickness is 17mm, the inside diameter dimension of the steel skeleton 2at the room temperature of 20 ℃ is 1222mm, and a-b=a×c× (a-B) =1217×130×10 -6 × (20-0) =3.16 mm when the plexiglass sleeve 1 is cooled from the room temperature of 20 ℃ to the cooling temperature of 0 ℃. The thickness of the gasket 3 when not pressed was 3mm. Taking these data as examples, the installation method will be further explained.
Referring to fig. 3 and 4, S1, when the plexiglas sleeve 1 is cooled from room temperature 20 ℃ to cooling temperature 0 ℃, its outer diameter is reduced from 1217mm to 1217-3.16 ≡1214mm. Specifically, the plexiglas sleeve 1 is placed into an ice-water mixture to cool the plexiglas sleeve 1 to a cooling temperature of 0 ℃.
Referring to fig. 5, S2, a 3mm thick gasket 3 is placed over the cooled plexiglas sleeve 1, where the package has an outer diameter of 3 x 2+1214 = 1220mm.
Referring to fig. 6, S3, the package is loaded into the steel skeleton 2, and the radial gap between the package and the steel skeleton 2 is (1222-1220)/(2=1 mm).
Referring to fig. 7, S4, the plexiglas sleeve 1 is warmed up from the cooling temperature of 0 ℃ to the room temperature of 20 ℃, the outer diameter of the plexiglas sleeve 1 is changed back to 1217mm, at this time, the radial gap between the plexiglas sleeve 1 and the steel skeleton 2 is (1222-1217)/(2=2.5 mm, the gasket 3 with the original thickness of 3mm is extruded and the thickness is reduced by 0.5mm, the thickness after extrusion is 2.5mm, and the plexiglas sleeve 1 is tightly assembled with the steel skeleton 2.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (9)
1. The organic glass sleeve mounting method of the composite earth pressure shield construction mechanism experimental device is used for mounting an organic glass sleeve (1) into a steel skeleton (2), and is characterized by comprising the following steps of:
s1, cooling the organic glass sleeve (1) to be lower than room temperature, wherein the size of the cooled organic glass sleeve (1) is reduced;
s2, sleeving a gasket (3) outside the cooled organic glass sleeve (1) to form a pre-assembly, wherein the outer diameter of the pre-assembly is smaller than the inner diameter of the steel skeleton (2);
S3, loading the preassembly into the steel skeleton (2) on the premise that the opening of the organic glass sleeve (1) or the steel skeleton (2) is not needed;
s4, heating the organic glass sleeve (1) to the room temperature, and changing the size of the organic glass sleeve to be larger and the size of the organic glass sleeve to be back to the size before cooling, wherein the organic glass sleeve (1) and the steel skeleton (2) extrude the gasket (3); the gasket (3) is compressed and reduced in thickness;
Setting the room temperature as a ℃, cooling the organic glass sleeve (1) from the room temperature of a ℃ to a cooling temperature of B ℃, wherein the outside diameter of the organic glass sleeve (1) at the room temperature of a ℃ is A mm, and the outside diameter of the organic glass sleeve (1) at the cooling temperature of B ℃ is B mm, A-B=A multiplied by C multiplied by (a-B), wherein C is the thermal expansion coefficient of the organic glass sleeve (1).
2. The method for installing the organic glass sleeve of the composite earth pressure shield construction mechanism experimental device according to claim 1, wherein the cooling temperature is 0 ℃.
3. The method for installing the organic glass sleeve of the composite earth pressure shield construction mechanism experimental device according to claim 2, wherein the organic glass sleeve (1) is placed into an ice-water mixture so that the organic glass sleeve (1) is cooled to the cooling temperature of 0 ℃.
4. The method for installing the organic glass sleeve of the composite earth pressure shield construction mechanism experimental device according to claim 2, wherein the outer diameter of the pre-assembly is 2 mm smaller than the inner diameter of the steel skeleton (2).
5. The method for installing the organic glass sleeve of the composite earth pressure shield construction mechanism experimental device according to claim 4, wherein the room temperature is 20 ℃.
6. The method for installing the organic glass sleeve of the composite earth pressure shield construction mechanism experimental device according to claim 5, wherein A is 1217 mm, and B is 1214 mm.
7. The method for installing the organic glass sleeve of the composite earth pressure shield construction mechanism experimental device according to claim 6, wherein the inner diameter of the steel skeleton (2) is 1222 mm.
8. The method for installing the organic glass sleeve of the composite earth pressure shield construction mechanism experimental device according to claim 7, wherein the thickness of the gasket (3) when not pressed is 3 mm.
9. The method for installing the organic glass sleeve of the composite earth pressure shield construction mechanism experimental device according to any one of claims 1 to 8, wherein the gasket (3) is a rubber gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310018495.XA CN115961964B (en) | 2023-01-06 | 2023-01-06 | Organic glass sleeve installation method of composite earth pressure shield construction mechanism experimental device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310018495.XA CN115961964B (en) | 2023-01-06 | 2023-01-06 | Organic glass sleeve installation method of composite earth pressure shield construction mechanism experimental device |
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| CN115961964A CN115961964A (en) | 2023-04-14 |
| CN115961964B true CN115961964B (en) | 2024-09-03 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088768A (en) * | 2016-07-27 | 2016-11-09 | 山东大学 | A kind of anti-buckling support, method and application with ring orientation prestress |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667601A (en) * | 2017-10-17 | 2019-04-23 | 北京建工路桥集团有限公司 | A kind of construction method that glass fibre main reinforcement portal is originated with steel bushing and off-axis line |
| CN108843337B (en) * | 2018-06-15 | 2020-02-18 | 中铁十二局集团有限公司 | A construction method using short sleeve for shield initiation |
| CN211924165U (en) * | 2020-03-09 | 2020-11-13 | 中国水利水电第一工程局有限公司 | Assembled steel sleeve structure for shield launching and receiving |
| CN114075977B (en) * | 2020-08-18 | 2024-10-18 | 北京京合顺通隧道工程有限公司 | Construction method and device for water filling receiving shield in steel sleeve |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088768A (en) * | 2016-07-27 | 2016-11-09 | 山东大学 | A kind of anti-buckling support, method and application with ring orientation prestress |
Non-Patent Citations (1)
| Title |
|---|
| 异形盾构同步注浆运动模式SPH模拟及试验验证;李培楠等;同济大学学报(自然科学版);第4节，图9-11 * |
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