CN1888393B - Functional gradient shield pipe sheet and producing method thereof - Google Patents
Functional gradient shield pipe sheet and producing method thereof Download PDFInfo
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- CN1888393B CN1888393B CN200610019656A CN200610019656A CN1888393B CN 1888393 B CN1888393 B CN 1888393B CN 200610019656 A CN200610019656 A CN 200610019656A CN 200610019656 A CN200610019656 A CN 200610019656A CN 1888393 B CN1888393 B CN 1888393B
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Abstract
The present invention relates to a reinforced concrete segment for shield-driven tunnel and its preparation method. It is a functional gradient segment, and is characterized by that it is formed from segment exterior protecting layer, reinforced concrete structure layer and fireproofing explosion-resisting layer. The described segment exterior protecting layer is composed of high-compact water-proofing layer, high-impervious protecting layer and reinforced concrete protecting layer.
Description
Technical field
The present invention relates to a kind of reinforced concrete segment that is used for shield tunnel and preparation method thereof.
Background technology
After entering 21 century, the needs of building along with the enhancing of national comprehensive strength and traffic infrastructure, the Chinese transportation tunnel construction has stepped into the high-speed developing period, and the construction of great traffic tunnel engineerings such as the tunnel of especially growing up, city underground, subaqueous tunnel and seabed tunnel will enter unprecedented peak period.Shield method will become and build the main construction method of getting over tunnel over strait, river and city underground owing to its unique advantage.
In shield tunnel, the section of jurisdiction is tunnel structure skeleton and waterproof main body, also is most important and liner structure member most critical, not only requires the section of jurisdiction to have mechanics, water resistance preferably, also requires the section of jurisdiction to have impervious preferably, fireproof performance.The section of jurisdiction has decisive influence to the shield tunnel service life application life, and the quality of section of jurisdiction performance, particularly section of jurisdiction durability directly have influence on the application life of section of jurisdiction, even has influence on the workmanship of shield tunnel.Therefore, appropriate design section of jurisdiction material and structure are to improve the section of jurisdiction durability and the key point in application life thereof, are very important for guaranteeing the shield tunnel project quality and improving its service life.
Most widely used in shield tunnel lining structure at present is reinforced concrete segment, it adopts one-time cast-forming technology to be prepared from, on its mentality of designing and preparation technology, this traditional reinforced concrete segment belongs to the cunningham technic category, and its waterproof, impervious, against corrosion, cracking resistance and anti-fiery ability are ubiquitous serious problems:
1. waterproof, impervious, etch resistant properties is not high, influences durability
Waterproof, impervious, against corrosion be the outstanding problem that the reinforced concrete segment lining cutting exists.Adopt the reinforced concrete segment of cunningham technic, its impervious grade generally between P8～P12, by electric weight between 1500～3000 coulombs, Cl
-Diffusion coefficient is usually 20.0～40.0 * 10
-13m
2Between/the s.
2. shrinkage strain is big, and is easy to crack, influences volume stability and durability
The reinforced concrete segment requirement of strength is than higher, gel material content is higher relatively, particularly cement consumption is bigger, even do not mix mineral admixture in the section of jurisdiction concrete that has, do not mix or only mix a spot of flyash as Guangzhou and Shanghai Underground C50 section of jurisdiction concrete, this makes concrete shrinkage deformation big, microcrack appears shrinking in section of jurisdiction surface easily, cause the section of jurisdiction crack resistance poor, both influenced the presentation quality of section of jurisdiction, influence the volume stability and the durability of section of jurisdiction again.
3. do not consider fire resistance, have hidden danger
Because some defectives of Reinforced Concrete Materials self cause the fire resistance of reinforced concrete member poor.Adopt the reinforced concrete segment of cunningham technic not consider pyric factor, its fire resistance does not improve.At present in the world the fire resistance of section of jurisdiction as an important index, require in design, to pay attention to.
The shield duct piece that adopts domestic and international existing cunningham technic to design and prepare is difficult to have high waterproof simultaneously, high impervious, high against corrosion, high cracking resistance and high fireproof energy, be difficult to satisfy shield tunnel and be in high-pressure water-enriched situation, the abominable environment for use, be unfavorable for very much the raising of shield tunnel service life impervious, long-life requirement of section of jurisdiction height and the resistivity of shield tunnel under various accidental factors such as fire, blast.
Therefore, must break through existing section of jurisdiction mentality of designing or preparation technology, could improve the waterproof of reinforced concrete segment, endurance quality such as impervious, against corrosion greatly, and the volume stability and the fire resistance that improve reinforced concrete segment, to improve the application life of section of jurisdiction.
Summary of the invention
The object of the present invention is to provide a kind of functional gradient shield pipe sheet and preparation method thereof with high waterproof, high impervious, high against corrosion, high cracking resistance and high fireproof energy, to improve the resistivity under section of jurisdiction durability and the accidental factor, prolong section of jurisdiction application life, and then prolong the service life of shield tunnel project.
For achieving the above object, the technical solution adopted in the present invention is: a kind of functional gradient shield pipe sheet, it is characterized in that: it is made of section of jurisdiction external protection 1, reinforced concrete structure layer 2 and fire prevention bursting layer 3, section of jurisdiction external protection 1 is positioned at the external surface of reinforced concrete structure layer 2, and fire prevention bursting layer 3 is positioned at the inner surface of reinforced concrete structure layer 2; The thickness of reinforced concrete structure layer 2 is 300.0～500.0mm, and the thickness of fire prevention bursting layer 3 is 10.0～16.0mm; Described section of jurisdiction external protection 1 is made of the fine and close waterproofing course 4 of height, high impervious topping 5, reinforced concrete protective layer 6, high fine and close waterproofing course 4 is positioned at the external surface of high impervious topping 5, and reinforced concrete protective layer 6 is between the external surface of the inner surface of the impervious topping 5 of height and reinforced concrete structure layer 2; The thickness of high fine and close waterproofing course 4 is 0.01～1.5mm, and the thickness of high impervious topping 5 is 10.0～30.0mm, and the thickness of reinforced concrete protective layer 6 is 20.0～40.0mm.
The fine and close waterproofing course 4 of described height is made by efficient permeable crystalline waterproofing material.
The impervious topping of described height 5 by diffusion coefficient less than 3.0 * 10
-13m
2/ s, cracking resistance grade reach I level, the strength grade high-performance fine aggregate concrete between C100～C200 and are prepared from.
The high-performance fine aggregate concrete is mainly mixed by cement, water, hardening agent and the particle diameter fine aggregate raw material less than 0.63mm, and the shared parts by weight of each raw material are: 1.00 parts of cement, 0.16～0.22 part in water, 0.40～0.75 part of hardening agent, particle diameter are less than 1.00～1.40 parts of the fine aggregates of 0.63mm.
Described hardening agent mainly by specific area greater than 200000cm
2The high activity SiO of/g
2Micro mist, specific area are greater than 4000cm
2Little breeze of the high activity of/g or flyash, assorted fibre and economization agent raw material mix, and the shared parts by weight of each raw material are: specific area is greater than 200000cm
2The high activity SiO of/g
21.00 parts of micro mists, specific area are greater than 4000cm
21.50～3.00 parts in little breeze of the high activity of/g or flyash, 0.01～0.02 part of assorted fibre, 0.08～0.15 part of economization agent.
Described reinforced concrete protective layer 6 forms for the high performance concrete cast of strength grade greater than C50.
Described reinforced concrete structure layer 2 is mainly formed greater than the high performance concrete cast of C50 by reinforcing cage, strength grade.
Described fire prevention bursting layer 3 forms for the fire-proof coating for tunnels spraying.
The preparation method of above-mentioned a kind of functional gradient shield pipe sheet is characterized in that: it comprises the steps:
1) reinforcing cage is put into soffit 8 that the reinforced concrete segment punching block makes reinforcing cage 20.0～40.0mm at the bottom of the reinforced concrete segment punching block; In the reinforced concrete segment punching block cast strength grade greater than the high performance concrete of C50 to reinforcing cage upper surface 20.0～40.0mm, it on the reinforcing cage upper surface 7 reinforced concrete protective layer 6, insert then and smash, forming thickness is the reinforced concrete structure layer 2 of 300.0～500.0mm and the reinforced concrete protective layer 6 that thickness is 20.0～40.0mm;
2) adopt imprint process on reinforced concrete protective layer 6, to carry out the interface and strengthen processing;
3) cast high-performance fine aggregate concrete is inserted then and is smash, receives light, wipes one's face to reinforced concrete segment punching block upper surface on reinforced concrete protective layer 6, and forming thickness is the high impervious topping 5 of 10.0～30.0mm; Steam-cured section of jurisdiction, and water curing is carried out in the section of jurisdiction by maintaining process;
4) after the section of jurisdiction water curing finishes, spray efficient permeable crystalline waterproofing material at impervious topping 5 external surfaces of height, forming thickness is the high fine and close waterproofing course 4 of 0.01～1.5mm; Spray maintenance in section of jurisdiction is transported to the shield tunnel construction scene after stipulate the length of time, with shield machine the section of jurisdiction is installed;
5) after the section of jurisdiction was installed to shield tunnel, at reinforced concrete structure layer 2 inner surface spraying fire-proof coating for tunnels, forming thickness was the fire prevention bursting layer 3 of 10.0～16.0mm.
The present invention, therefore, compares with the reinforced concrete segment that adopts cunningham technic the technical scheme that function/structure-integrated design is carried out in the section of jurisdiction owing to adopted the Functionally Graded Materials design principle, has following remarkable result:
One, the high waterproof of functional gradient shield pipe sheet collector sheet external protection 1, high impervious, high against corrosion, high cracking resistance, high-strength, the high-performance of reinforced concrete structure layer 2, the fire prevention antiknock function of fire prevention bursting layer 3 is in one; Can improve the resistivity under section of jurisdiction durability and the accidental factor, prolong section of jurisdiction application life, and then prolong the service life of shield tunnel project greatly.
Its two, the section of jurisdiction external protection 1 of functional gradient shield pipe sheet is made of jointly the fine and close waterproofing course of height, high impervious topping, reinforced concrete protective layer, can significantly improve the anti-corrosion ability of the anti-permeability performance and the reinforcing bar of section of jurisdiction, and then improves the durability of section of jurisdiction.
They are three years old; because having adopted imprint process to carry out the interface between the high impervious topping of functional gradient shield pipe sheet and reinforced concrete protective layer strengthens and handles; increased the contact area between the two-layer homogeneous material; improve the mechanical snap power between the two-layer homogeneous material, strengthened shrinkage matching capacity between the two-layer homogeneous material.
The important technological parameters of functional gradient shield pipe sheet of the present invention is: according to GBJ82-85, impervious grade is greater than P40; According to U.S. ASTM C1202-97 standard, be lower than 100 coulombs by electric weight; According to concrete Cl
-The NEL method of diffusion coefficient fast detecting, Cl
-Diffusion coefficient is 0.5～1.5 * 10
-13m
2Between/the s; According to Chinese CCES 01-2004 standard, the cracking resistance grade reaches the I level; According to U.S. NFPA 502-2004 standard, fire endurance 4.0～5.0h.
Description of drawings
Fig. 1 is the structural representation of functional gradient shield pipe sheet of the present invention.
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Fig. 3 is preparation technology's flow chart of functional gradient shield pipe sheet of the present invention.
The specific embodiment
The present invention is a kind of reinforced concrete segment that is used for shield tunnel, and it carries out function/structure-integrated design according to the Functionally Graded Materials design principle to the section of jurisdiction, and adopts twice cast, once impresses the constant gradient complex technique and be prepared from.
The invention will be further described below in conjunction with embodiment and accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of functional gradient shield pipe sheet, it is made of section of jurisdiction external protection 1, reinforced concrete structure layer 2 and fire prevention bursting layer 3, and section of jurisdiction external protection 1 is positioned at the external surface of reinforced concrete structure layer 2, and fire prevention bursting layer 3 is positioned at the inner surface of reinforced concrete structure layer 2; The thickness of reinforced concrete structure layer 2 is 300.0～500.0mm, and the thickness of fire prevention bursting layer 3 is 10.0～16.0mm; Described section of jurisdiction external protection 1 is made of the fine and close waterproofing course 4 of height, high impervious topping 5, reinforced concrete protective layer 6, high fine and close waterproofing course 4 is positioned at the external surface of high impervious topping 5, and reinforced concrete protective layer 6 is between the external surface of the inner surface of the impervious topping 5 of height and reinforced concrete structure layer 2; The thickness of high fine and close waterproofing course 4 is 0.01～1.5mm, and the thickness of high impervious topping 5 is 10.0～30.0mm, and the thickness of reinforced concrete protective layer 6 is 20.0～40.0mm.
The fine and close waterproofing course 4 of described height is made by efficient permeable crystalline waterproofing material, and efficient permeable crystalline waterproofing material can adopt commercially available cementitious capillary waterproofing material, as commercially available DPS waterproofing materials.Efficient permeable crystalline waterproofing material can infiltrate high impervious topping inside; alkaloids reaction with cement inside forms water-fast gelinite, stops up space and capillary porosity duct; form fine and close permanent waterproof layer, further improve the anti-permeability performance of high impervious topping.Simultaneously, high fine and close waterproofing course can reduce concrete surface moisture content volatilization, prevents the concrete surface local desiccation or cracks.
The impervious topping of described height 5 by diffusion coefficient less than 3.0 * 10
-13m
2/ s, cracking resistance grade reach I level, the strength grade high-performance fine aggregate concrete between C100～C200 and are prepared from.The high-performance fine aggregate concrete is mainly mixed by cement, water, hardening agent and the particle diameter fine aggregate raw material less than 0.63mm, and the shared parts by weight of each raw material are: 1.00 parts of cement, 0.16～0.22 part in water, 0.40～0.75 part of hardening agent, particle diameter are less than 1.00～1.40 parts of the fine aggregates of 0.63mm.
Described hardening agent mainly by specific area greater than 200000cm
2The high activity SiO of/g
2Micro mist, specific area are greater than 4000cm
2Little breeze of the high activity of/g or flyash, assorted fibre and economization agent raw material mix, and the shared parts by weight of each raw material are: specific area is greater than 200000cm
2The high activity SiO of/g
21.00 parts of micro mists, specific area are greater than 4000cm
21.50～3.00 parts in little breeze of the high activity of/g or flyash, 0.01～0.02 part of assorted fibre, 0.08～0.15 part of economization agent.
Described reinforced concrete protective layer 6 forms for the high performance concrete cast of strength grade greater than C50.Described high performance concrete is mainly mixed by raw materials such as cement, flyash, sand, stone, water reducing agent, water, and the shared parts by weight of each raw material are: 1.00～1.30 parts of the handstones of 1.00 parts of cement, 0.20～0.30 part in flyash (I level), 1.60～1.90 parts in sand, particle diameter 4.75～9.5mm, the big stone 1.60～2.00 of particle diameter 4.75～26.5mm, 0.01～0.02 part of water reducing agent (naphthalene system), 0.30～0.40 part in water.
Described reinforced concrete structure layer 2 is mainly formed greater than the high performance concrete cast of C50 by reinforcing cage, strength grade.The used high performance concrete of the composition of described high performance concrete and reinforced concrete protective layer 6 is identical.
Described fire prevention bursting layer 3 forms for the fire-proof coating for tunnels spraying.
As shown in Figure 3, the preparation method of above-mentioned a kind of functional gradient shield pipe sheet, it comprises the steps:
1) reinforcing cage is put into soffit 8 that the reinforced concrete segment punching block makes reinforcing cage 20.0～40.0mm at the bottom of the reinforced concrete segment punching block; In the reinforced concrete segment punching block cast strength grade greater than the high performance concrete of C50 to reinforcing cage upper surface 20.0～40.0mm, it on the reinforcing cage upper surface 7 reinforced concrete protective layer 6, insert then and smash, forming thickness is the reinforced concrete structure layer 2 of 300.0～500.0mm and the reinforced concrete protective layer 6 that thickness is 20.0～40.0mm;
2) adopt imprint process on reinforced concrete protective layer, to carry out the interface and strengthen processing, and impressing mould adopts embedded broken line shape interface 9, the angle (as shown in Figure 2) that its broken line and horizontal plane maintenance are 15～65 °;
3) pour into a mould the high-performance fine aggregate concretes to reinforced concrete segment punching block upper surface at reinforced concrete protective layer 6, insert then and smash, receive light, wipe one's face, forming thickness is the high impervious topping 5 of 10.0～30.0mm; Steam-cured section of jurisdiction, and water curing is carried out in the section of jurisdiction by maintaining process;
4) after the section of jurisdiction water curing finishes, spray efficient permeable crystalline waterproofing material at impervious topping 5 external surfaces of height, forming thickness is the high fine and close waterproofing course 4 of 0.01～1.5mm; Spray maintenance in section of jurisdiction is transported to the shield tunnel construction scene after stipulate the length of time, with shield machine the section of jurisdiction is installed;
5) after the section of jurisdiction was installed to shield tunnel, at reinforced concrete structure layer 2 inner surface spraying fire-proof coating for tunnels, forming thickness was the fire prevention bursting layer 3. of 10.0～16.0mm
The important technological parameters of functional gradient shield pipe sheet of the present invention is: according to GBJ82-85, impervious grade is greater than P40; According to U.S. ASTM C1202-97 standard, be lower than 100 coulombs by electric weight; According to concrete Cl
-The NEL method of diffusion coefficient fast detecting, Cl
-Diffusion coefficient is 0.5～1.5 * 10
-13m
2Between/the s; According to Chinese CCES 01-2004 standard, the cracking resistance grade reaches the I level; According to U.S. NFPA 502-2004 standard, fire endurance 4.0～5.0h.
In order to contrast, to adopt the cunningham technic design and prepared common reinforced concrete segment (RCS-0), its material therefor and thickness such as table 1 and table 2.The design and prepared the functional gradient shield pipe sheet of forming by toppings such as the fine and close waterproofing course of height, high impervious topping, reinforced concrete protective layer, reinforced concrete structure layer and fire prevention bursting layers (FGS-1 and FGS-2), each layer material therefor and thickness such as table 1 and table 2 according to the present invention.Water curing was 7 days after wherein conservation system was steam-cured 11 hours, sprayed maintenance to 28 day again.Concrete steam curing system is: quiet stopping 3 hours; Heated up heating rate＜15 ℃ 3 hours; Constant temperature 3 hours, thermostat temperature are 50 ℃; Lowered the temperature rate of temperature fall＜15 ℃ 2 hours.
The section of jurisdiction test comprises: the impervious level estimate of monolithic section of jurisdiction; Section of jurisdiction core sampling back sample pass through electric weight, Cl
-Diffusion coefficient, fire endurance test, and by international employing Cl
-Diffusion coefficient is predicted the steel concrete method in application life, and life prediction has been carried out in the section of jurisdiction.
From the every test index in table 3 section of jurisdiction as can be seen, the fire endurance of FGS-1 and FGS-2 is 4.5h, all is higher than the 2.0h of RCS-0, satisfies the design standard that fire endurance in the construction of tunnel design standard should be not less than 4.0h; The impervious grade of FGS-1 and FGS-2 is respectively P40 and P45, all is higher than the P14 of RCS-0; FGS-1 and FGS-2 pass through electric weight, Cl
-All than the low several magnitude of RCS-0, its anti-permeability performance has obtained improving widely diffusion coefficient.If by international employing Cl
-Diffusion coefficient is predicted steel concrete application life, and then the prediction of FGS-1 and FGS-2 will reach respectively more than 400 years and 600 years application life, is higher than the less than 60 years of RCS-0 far away.
Table 1 section of jurisdiction each layer material therefor and requirement thereof
Each layer thickness of table 2 section of jurisdiction
The every test index in table 3 section of jurisdiction
Claims (2)
1. functional gradient shield pipe sheet, it is characterized in that: it is made of section of jurisdiction external protection (1), reinforced concrete structure layer (2) and fire prevention bursting layer (3), section of jurisdiction external protection (1) is positioned at the external surface of reinforced concrete structure layer (2), and fire prevention bursting layer (3) is positioned at the inner surface of reinforced concrete structure layer (2); The thickness of reinforced concrete structure layer (2) is 300.0～500.0mm, and the thickness of fire prevention bursting layer (3) is 10.0～16.0mm; Described section of jurisdiction external protection (1) is made of the fine and close waterproofing course of height (4), high impervious topping (5), reinforced concrete protective layer (6), high fine and close waterproofing course (4) is positioned at the external surface of high impervious topping (5), and reinforced concrete protective layer (6) is positioned between the external surface of the inner surface of high impervious topping (5) and reinforced concrete structure layer (2); The thickness of high fine and close waterproofing course (4) is 0.01～1.5mm, and the thickness of high impervious topping (5) is 10.0～30.0mm, and the thickness of reinforced concrete protective layer (6) is 20.0～40.0mm;
The fine and close waterproofing course of described height (4) is formed by the cementitious capillary waterproofing material spraying;
The impervious topping of described height (5) by diffusion coefficient less than 3.0 * 10
-13m
2/ s, cracking resistance grade reach I level, the strength grade high-performance fine aggregate concrete between C100～C200 and are prepared from;
The high-performance fine aggregate concrete is mainly mixed by cement, water, hardening agent and the particle diameter fine aggregate raw material less than 0.63mm, and the shared parts by weight of each raw material are: 1.00 parts of cement, 0.16～0.22 part in water, 0.40～0.75 part of hardening agent, particle diameter are less than 1.00～1.40 parts of the fine aggregates of 0.63mm;
Described hardening agent mainly by specific area greater than 200000cm
2The high activity SiO of/g
2Micro mist, specific area are greater than 4000cm
2Little breeze of the high activity of/g or flyash, assorted fibre and economization agent raw material mix, and the shared parts by weight of each raw material are: specific area is greater than 200000cm
2The high activity SiO of/g
21.00 parts of micro mists, specific area are greater than 4000cm
21.50～3.00 parts in little breeze of the high activity of/g or flyash, 0.01～0.02 part of assorted fibre, 0.08～0.15 part of economization agent.
2. the preparation method of a kind of functional gradient shield pipe sheet as claimed in claim 1, it is characterized in that: it comprises the steps:
1) reinforcing cage is put into soffit (8) that the reinforced concrete segment punching block makes reinforcing cage 20.0～40.0mm at the bottom of the reinforced concrete segment punching block; In the reinforced concrete segment punching block cast strength grade greater than the high performance concrete of C50 to reinforcing cage upper surface 20.0～40.0mm, on the reinforcing cage upper surface (7) reinforced concrete protective layer (6), insert then and smash, forming thickness is the reinforced concrete structure layer (2) of 300.0～500.0mm and the reinforced concrete protective layer (6) that thickness is 20.0～40.0mm;
2) adopt imprint process on reinforced concrete protective layer (6), to carry out the interface and strengthen processing;
3) go up cast high-performance fine aggregate concrete to reinforced concrete segment punching block upper surface at reinforced concrete protective layer (6), insert then and smash, receive light, wipe one's face, forming thickness is the high impervious topping (5) of 10.0～30.0mm; Steam-cured section of jurisdiction, and water curing is carried out in the section of jurisdiction by maintaining process;
The high-performance fine aggregate concrete is mainly mixed by cement, water, hardening agent and the particle diameter fine aggregate raw material less than 0.63mm, and the shared parts by weight of each raw material are: 1.00 parts of cement, 0.16～0.22 part in water, 0.40～0.75 part of hardening agent, particle diameter are less than 1.00～1.40 parts of the fine aggregates of 0.63mm;
Described hardening agent mainly by specific area greater than 200000cm
2The high activity SiO of/g
2Micro mist, specific area are greater than 4000cm
2Little breeze of the high activity of/g or flyash, assorted fibre and economization agent raw material mix, and the shared parts by weight of each raw material are: specific area is greater than 200000cm
2The high activity SiO of/g
21.00 parts of micro mists, specific area are greater than 4000cm
21.50～3.00 parts in little breeze of the high activity of/g or flyash, 0.01～0.02 part of assorted fibre, 0.08～0.15 part of economization agent.
4) after the section of jurisdiction water curing finishes, spray efficient permeable crystalline waterproofing material at the impervious topping of height (5) external surface, forming thickness is the high fine and close waterproofing course (4) of 0.01～1.5mm; Spray maintenance in section of jurisdiction is transported to the shield tunnel construction scene after stipulate the length of time, with shield machine the section of jurisdiction is installed;
Described efficient permeable crystalline waterproofing material is a cementitious capillary waterproofing material;
5) after the section of jurisdiction was installed to shield tunnel, at reinforced concrete structure layer (2) inner surface spraying fire-proof coating for tunnels, forming thickness was the fire prevention bursting layer (3) of 10.0～16.0mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610019656A CN1888393B (en) | 2006-07-18 | 2006-07-18 | Functional gradient shield pipe sheet and producing method thereof |
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|---|---|---|---|
| CN200610019656A CN1888393B (en) | 2006-07-18 | 2006-07-18 | Functional gradient shield pipe sheet and producing method thereof |
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| CN1888393B true CN1888393B (en) | 2010-05-12 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102006055416A1 (en) | 2006-11-22 | 2008-05-29 | Ed. Züblin Ag | Sicherheitstübbing |
| CN102071954B (en) * | 2010-12-20 | 2013-01-02 | 上海市城市建设设计研究院 | Shield tunnel duct piece |
| CN103306439B (en) * | 2013-06-14 | 2016-01-27 | 浙江建设职业技术学院 | Roof construction layer pouring technology implanted by a kind of high impervious cracking resistance topping |
| CN109057822A (en) * | 2018-10-11 | 2018-12-21 | 沈阳铭峻新型轨道交通科技有限公司 | A kind of concrete pipe sheet and preparation method thereof containing high active material |
| CN110469011A (en) * | 2019-08-20 | 2019-11-19 | 防灾科技学院 | A kind of building method and anti-conquassation shear wall of anti-conquassation shear wall |
| CN112443337B (en) * | 2021-01-29 | 2021-08-31 | 湖南大学 | Ultra-high performance concrete-common concrete shield tunnel segment and construction method thereof |
| CN113006818A (en) * | 2021-02-23 | 2021-06-22 | 福州大学 | Novel stainless steel impervious segment and preparation method thereof |
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