CN114439492B - Device and test method for simulating stratum constraint of shield synchronous grouting test - Google Patents
Device and test method for simulating stratum constraint of shield synchronous grouting test Download PDFInfo
- Publication number
- CN114439492B CN114439492B CN202210083122.6A CN202210083122A CN114439492B CN 114439492 B CN114439492 B CN 114439492B CN 202210083122 A CN202210083122 A CN 202210083122A CN 114439492 B CN114439492 B CN 114439492B
- Authority
- CN
- China
- Prior art keywords
- stratum
- limiting plate
- steel frames
- test
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 24
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 43
- 239000010959 steel Substances 0.000 claims description 43
- 230000000452 restraining effect Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002689 soil Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Educational Technology (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Physics & Mathematics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention aims to solve the technical problem of providing a device and a test method for simulating stratum restraint of a shield synchronous grouting test, which are used for simulating the restraint effect of different stratum above a tunnel on a segment structure in a shield tunnel wall post synchronous grouting test, and comprise a mounting frame, a fixed limiting plate and a stratum limiting plate, wherein the fixed limiting plate and the stratum limiting plate are of arc structures; the back of the fixed limiting plate is fixed on the bottom surface of the mounting frame, and the back of the stratum limiting plate is fixed on the cambered surface of the fixed limiting plate through a plurality of constraint springs.
Description
Technical Field
The invention belongs to the technical field of shield tunnel model tests, and particularly relates to a device and a test method for simulating stratum constraint of a shield synchronous grouting test.
Background
In recent years, the development of China is more and more modern, and modern shield equipment is adopted in tunnel construction. In the process of shield tunneling, because the outer diameter of the shield shell is larger than the outer diameter of the lining segment, after the shield tail is separated from the segment, an annular gap can be formed between the segment and the stratum, and the gap is required to be treated by synchronous grouting of the shield tail in time so as to prevent the segment from being hollow, so that the stratum is greatly settled. When the slurry of synchronous grouting fills the gap of the shield tail and is not coagulated, buoyancy is generated on the pipe piece so that the pipe piece floats upwards. Meanwhile, the stratum above the pipe piece can generate downward acting force on the pipe piece as external load, and the floating deformation of the pipe piece can be limited to a certain extent. And when stratum properties are different, the restriction capability to the segment is also different.
At present, in the synchronous grouting test of the shield tunnel, the soil body is directly used in the model test box to simulate stratum for experiments, namely, geological soil layers are paved above the pipe pieces in the model test box, due to different types of the geological soil layers, such as hard rock geological soil layers and soft soil geological soil layers, the constraint effect of different types of geological soil layers on the pipe pieces in the simulation grouting process is different, in order to simulate different geological soil layers, the soil layers on the pipe pieces are required to be cleaned and replaced with new soil bodies, the experimental process is complicated, and cleaning work after the experiments is very troublesome.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a test method for simulating stratum restriction of a shield synchronous grouting test, which are used for simulating the restriction of different stratum above a tunnel to a segment structure in a shield tunnel wall post synchronous grouting test.
The invention is realized by the following technical scheme:
the device for simulating stratum restraint of the shield synchronous grouting test comprises a mounting frame, a fixed limiting plate and a stratum limiting plate, wherein the fixed limiting plate and the stratum limiting plate are of arc structures;
the back of the fixed limiting plate is fixed on the bottom surface of the mounting frame, and the back of the stratum limiting plate is fixed on the cambered surface of the fixed limiting plate through a plurality of constraint springs.
Further, the upper end and the lower end of the constraint spring are detachably connected with the fixed limiting plate and the stratum limiting plate.
Further, the mounting frame comprises two transverse steel frames and two longitudinal steel frames, the two transverse steel frames are distributed in parallel from front to back, the two longitudinal steel frames are distributed in parallel from left to right and are positioned below the transverse steel frames, the transverse steel frames and the longitudinal steel frames are connected into a whole through the vertical steel frames, and the transverse steel frames and the longitudinal steel frames are distributed in a # -shaped mode in space;
the bottoms of the two longitudinal steel frames are respectively fixed on the left side edge and the right side edge of the fixed limiting plate, and fixing rings are arranged at the two ends of the transverse steel frames.
The invention relates to a test method for simulating stratum constraint of a shield synchronous grouting test, which is carried out by adopting the device for simulating stratum constraint of the shield synchronous grouting test and comprises the following steps:
(1) Fixing a mounting frame on the upper part of the test box, forming a gap between the cambered surface of the stratum limiting plate and the outer wall of the test tube piece for grouting, and simulating stratum restraint above the test tube piece by means of resilience force of a plurality of restraint springs;
(2) In order to simulate stratum restraint of different foundation bed coefficients K, the stratum limiting plate is disassembled to replace a restraint spring of a corresponding spring rate coefficient K, wherein the relation between K and K is K=k/0.1.
Further, 10-15 constraint springs are uniformly distributed in each square meter of area between the fixed limiting plate and the stratum limiting plate.
Compared with the prior art, the invention has the following beneficial effects:
the back of the fixed limiting plate is fixed on the bottom surface of the mounting frame, and the back of the stratum limiting plate is fixed on the cambered surface of the fixed limiting plate through a plurality of constraint springs.
1. The restraining spring and the stratum limiting plate simulate the restraining soil layer at the upper part of the duct piece, so that the displacement amplitude of the duct piece in the test can be limited, and the excessive displacement of the duct piece is prevented; the constraint springs with different rigidity coefficients replace soil layers with different foundation bed coefficients and are used for simulating the constraint effect of different strata above the tunnel on the pipe sheet structure;
the device and the test method for simulating stratum constraint of the shield synchronous grouting test avoid the process of frequently replacing the real soil in the past, simplify the test process and reduce the labor loss generated by cleaning the soil;
2. the device for simulating stratum restraint of the shield synchronous grouting test is reasonable in structural design, simple in assembly manufacturing process, convenient to install and adjust and wide in application range.
Drawings
FIG. 1 is a schematic diagram of a device for simulating stratum restraint in a shield synchronous grouting test according to the invention;
FIG. 2 is a schematic view of a mounting frame according to the present invention;
wherein: 1. a transverse steel frame; 2. a longitudinal steel frame; 3. vertical steel frame; 4. fixing the steel ring; 5. a fixing bolt; 6. fixing a limiting plate; 7. a formation limiting plate; 8. and the spring can be detached.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. 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.
As shown in fig. 1-2, the invention discloses a device for simulating stratum restraint of a shield synchronous grouting test, which comprises a mounting frame, a fixed limiting plate 6 and a stratum limiting plate 7, wherein the fixed limiting plate 6 and the stratum limiting plate 7 are of arc-shaped steel plate structures. The mounting frame comprises two transverse steel frames 1 and two longitudinal steel frames 2, wherein the two transverse steel frames 1 are distributed in a front-back parallel mode, the two longitudinal steel frames 2 are distributed in a left-right parallel mode and are located below the transverse steel frames 1, the transverse steel frames 1 and the longitudinal steel frames 2 are connected into a whole in a welded mode through four vertical steel frames 3, welding points of the transverse steel frames 1 and the longitudinal steel frames 2 are located at end positions, and the transverse steel frames 1 and the longitudinal steel frames 2 are distributed in a 'groined' mode in space. The tail end of the transverse steel frame 1 is provided with a fixing ring 4 and a fixing bolt 5 for fixing the device, and when in use, the fixing ring 4 is sleeved on the steel frame carried by the whole equipment (mainly a test box) of the test device, and then the fixing bolt 5 is screwed.
The left and right sides limit of the back of fixed limiting plate 6 is fixed in the bottom of two vertical steelframe 2 with the welded mode respectively, and the back of stratum limiting plate 7 is fixed on the cambered surface of fixed limiting plate 6 with bolted connection's mode through a plurality of binding springs, so design, make things convenient for the dismouting of binding spring and stratum limiting plate 7.
In a shield tunnel wall post-synchronous grouting test, the device disclosed by the invention is required to be arranged above the pipe piece, and when the pipe piece is displaced due to various reasons and reaches a certain amplitude, the stratum limiting plate 7 plays a role in preventing the pipe piece from continuing to displace, namely, the pipe piece is prevented from being displaced greatly in the test.
The restraining spring 8 is a mainly functioning part in the present invention for simulating different strata in different situations. The ratio of the pressure intensity p applied to any point on the soil layer foundation to the foundation settlement s of the point is called a foundation bed coefficient, and the foundation bed coefficient can be understood as the soil body rigidity. The stiffness of the restraining spring is affected by its diameter, material, number of turns, etc. In this test, the corresponding stratum was simulated using springs having a stiffness approximately equivalent to the foundation coefficient of the corresponding stratum, 10 constraint springs were uniformly distributed between the fixed and stratum-limiting plates 6 and 7 per square meter of area, each constraint spring accounting for about 0.1m on average of the area of the stratum-limiting plate 7 2 The conversion formula of the bed coefficient K and the spring rate K of the restraining spring at this time may be approximated as k=k/0.1. When the stratum is soft, its rigidity is small, such as foundation coefficient is about 0.1×10 4 kN/m 3 ~2.0×10 4 kN/m 3 The soft soil stratum has weak constraint effect, and the rigidity can be 0.1X10 3 kN/m~2.0×10 3 A spring 8 between kN/m; when the formation is a hard rock formation, the formation has a relatively high stiffness, e.g. a bed coefficient of about 19.6X10 4 kN/m 3 ~98.1×10 4 kN/m 3 The hard soil stratum has strong restraint effect and adopts the rigidity coefficient of 19.6x10 3 kN/m~98.1×10 3 A restraining spring 8 between kN/m with a bed coefficient of approximately 0.981 x 10 6 kN/m 3 ~14.71×10 6 kN/m 3 The rigidity of the hard rock stratum between the two layers is 0.981 multiplied by 10 5 kN/m~14.71×10 5 A restraining spring between kN/m.
The method for testing by adopting the device for simulating stratum restraint of the shield synchronous grouting test comprises the following steps:
(1) Fixing the mounting frame on the upper part of the test box through the fixing ring, forming a gap between the cambered surface of the stratum limiting plate 7 and the outer wall of the test tube piece for grouting, and simulating stratum restraint above the test tube piece by means of resilience force of the plurality of restraint springs;
(2) In order to simulate stratum restraint of different foundation bed coefficients K, the stratum limiting plate 7 is disassembled to replace a restraint spring with a corresponding spring stiffness coefficient K, wherein the relation between K and K is K=k/0.1;
(3) And when the shield tunnel wall is subjected to synchronous grouting test, if the pipe piece is displaced due to various reasons and reaches a certain amplitude, the stratum limiting plate 7 plays a role in preventing the pipe piece from continuing to displace, namely, the pipe piece is prevented from larger displacement in the test.
The invention adopts the constraint springs with different rigidity coefficients to have different effects when the pipe piece floats upwards, and corresponds to the state of the pipe piece floating upwards when the stratum with different base coefficients is constructed. For example: when the stiffness coefficient of the constraint spring is larger, the constraint spring corresponds to the situation that the stratum at the upper middle part in actual construction is a hard stratum; and when the stiffness coefficient of the constraint spring is smaller, the constraint spring corresponds to the situation that the stratum at the upper part in actual construction is a clay layer, and the like. When the stratum to be simulated changes, the detachable stratum limiting plate 7 and the restraint springs are detached from the fixed limiting plate 6, the restraint springs with the corresponding rigidity coefficients are installed, and then the stratum limiting plate 7 is installed and fixed, so that the test can be continued.
According to the device and the method for simulating stratum restraint of the shield synchronous grouting test, the restraining spring and the stratum limiting plate 7 simulate the restraining soil layer at the upper part of the pipe piece, so that the displacement amplitude of the pipe piece in the test can be limited, and the excessive displacement of the pipe piece is prevented; the constraint springs with different rigidity coefficients replace soil layers with different foundation bed coefficients and are used for simulating the constraint effect of different strata above the tunnel on the pipe sheet structure;
the device and the test method for simulating stratum restraint of the shield synchronous grouting test avoid the process of frequently replacing the real soil body in the past, simplify the test process and reduce the labor loss generated by cleaning the soil body.
Claims (3)
1. The device for simulating stratum restraint of the shield synchronous grouting test is characterized by comprising a mounting frame, a fixed limiting plate and a stratum limiting plate, wherein the fixed limiting plate and the stratum limiting plate are arc-shaped structures;
the back of the fixed limiting plate is fixed on the bottom surface of the mounting frame, and the back of the stratum limiting plate is fixed on the cambered surface of the fixed limiting plate through a plurality of constraint springs;
the upper end and the lower end of the constraint spring are detachably connected with the fixed limiting plate and the stratum limiting plate;
the mounting frame comprises two transverse steel frames and two longitudinal steel frames, the two transverse steel frames are distributed in parallel from front to back, the two longitudinal steel frames are distributed in parallel from left to right and are positioned below the transverse steel frames, the transverse steel frames and the longitudinal steel frames are connected into a whole through the vertical steel frames, and the transverse steel frames and the longitudinal steel frames are distributed in a # -shaped mode in space;
the bottoms of the two longitudinal steel frames are respectively fixed on the left side edge and the right side edge of the fixed limiting plate, and fixing rings are arranged at the two ends of the transverse steel frames.
2. The test method for simulating the stratum constraint of the shield synchronous grouting test is characterized by adopting the device for simulating the stratum constraint of the shield synchronous grouting test according to claim 1 for test, and comprises the following steps:
(1) Fixing a mounting frame on the upper part of the test box, forming a gap between the cambered surface of the stratum limiting plate and the outer wall of the test tube piece for grouting, and simulating stratum restraint above the test tube piece by means of resilience force of a plurality of restraint springs;
(2) In order to simulate stratum restraint of different foundation bed coefficients K, the stratum limiting plate is disassembled to replace a restraint spring of a corresponding spring rate coefficient K, wherein the relation between K and K is K=k/0.1.
3. The test method of claim 2, wherein 10-15 restraining springs are uniformly distributed in each square meter of area between the fixed limiting plate and the stratum limiting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210083122.6A CN114439492B (en) | 2022-01-25 | 2022-01-25 | Device and test method for simulating stratum constraint of shield synchronous grouting test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210083122.6A CN114439492B (en) | 2022-01-25 | 2022-01-25 | Device and test method for simulating stratum constraint of shield synchronous grouting test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114439492A CN114439492A (en) | 2022-05-06 |
| CN114439492B true CN114439492B (en) | 2023-06-06 |
Family
ID=81369069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210083122.6A Active CN114439492B (en) | 2022-01-25 | 2022-01-25 | Device and test method for simulating stratum constraint of shield synchronous grouting test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114439492B (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403306B (en) * | 2008-11-10 | 2010-09-22 | 西南交通大学 | Soil pressure balancing type tunnel shielding simulation experiment system |
| CN104989423B (en) * | 2015-06-11 | 2017-05-24 | 同济大学 | Visual single-circle shield tunneling synchronous grouting slurry diffusion mode study platform and application of platform |
| CN207647708U (en) * | 2017-12-09 | 2018-07-24 | 山东金城建设有限公司 | A kind of slip casting pump configuration of reservoir treating |
| CN107905967A (en) * | 2017-12-09 | 2018-04-13 | 惠州市梦芭迪工业产品设计中心(普通合伙) | A kind of slip casting pump configuration of reservoir treating |
| CN209742911U (en) * | 2019-02-01 | 2019-12-06 | 上海工程技术大学 | simulation test device for slurry loss amount in shield synchronous grouting |
| CN110618037A (en) * | 2019-10-23 | 2019-12-27 | 中铁第四勘察设计院集团有限公司 | Loading device and method for shield tunnel lining full-scale test |
| CN110748353A (en) * | 2019-12-03 | 2020-02-04 | 中国矿业大学(北京) | Shield excavation and soil body settlement monitoring simulation test platform and simulation test method |
| CN212433171U (en) * | 2020-06-02 | 2021-01-29 | 北京市轨道交通建设管理有限公司 | Shield grouting test device |
| CN112664267A (en) * | 2020-12-25 | 2021-04-16 | 北京大地高科地质勘查有限公司 | Water plugging method for grouting transformation of coal seam roof water-bearing stratum |
| CN112664212A (en) * | 2020-12-30 | 2021-04-16 | 合诚工程咨询集团股份有限公司 | Three-dimensional model loading device and method for shield machine |
| CN113107505B (en) * | 2021-05-27 | 2022-10-21 | 西南交通大学 | Multi-mode shield tunneling test research device |
-
2022
- 2022-01-25 CN CN202210083122.6A patent/CN114439492B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114439492A (en) | 2022-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101775840B (en) | Beam column node suitable for quadrate steel pipe column | |
| CN202148612U (en) | Three-dimensional earthquake isolation device capable of controlling sway and resisting lift-off | |
| CN208949708U (en) | A kind of antidetonation bridge pier | |
| CN105716959B (en) | It is a kind of can simulated groundwater position dynamic change excavation models experimental rig | |
| CN106289718A (en) | Attenuating shock wave system that a kind of scalable slope is high and using method | |
| CN114439492B (en) | Device and test method for simulating stratum constraint of shield synchronous grouting test | |
| CN108318663A (en) | Simulate the experimental rig of Tunnel Passing fault belt | |
| CN103255740B (en) | Vertical pile positioning landing stage | |
| CN209494195U (en) | A kind of civil engineering concrete surface dabbing device | |
| CN103967020B (en) | A kind of prestressing force suspension device for elongated rectangular shape foundation ditch | |
| CN205506571U (en) | Ground water level dynamic change's foundation ditch model test device can simulate | |
| CN211111302U (en) | Ecological floating island spud pile | |
| CN210174677U (en) | Hard crossing for changing electrified railway into moving | |
| CN104295146B (en) | 110kV line project improvement corner tower composition structure | |
| CN106192895A (en) | Packaging type reinforced gabion cylinder mould | |
| CN208075695U (en) | A kind of blasting protection device | |
| CN109989773A (en) | The drawing anchor support system and method for highway soft rock tunnel | |
| CN205349372U (en) | For a short time, construct to fold friendship tunnel controllable gate shaped steel frame apart from shield only | |
| CN212958672U (en) | Underground coal mine roadway supporting device | |
| CN106968248A (en) | A kind of civil engineering piling machine | |
| CN208395859U (en) | A kind of novel sink tubular type seabed tunnel | |
| CN216718083U (en) | Concrete impact testing machine | |
| CN216665512U (en) | Telescopic chassis big frame of high-lift anchoring drilling machine | |
| CN211989656U (en) | Be used for hydraulic equipment production with vibrations sand washer | |
| CN206157785U (en) | Vibrating device is prevented to public road bridge roof beam pile foundation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Peng Inventor after: Li Zhengxin Inventor after: Zhang Chen Inventor after: Xiao Mingqing Inventor after: Sun Xutao Inventor after: Wang Shimin Inventor after: He Chuan Inventor after: Shu Jicheng Inventor after: Li Zongjie Inventor after: Peng Xiaoyu Inventor after: Lou Rui Inventor before: Chen Peng Inventor before: Zhang Chen Inventor before: Sun Xutao Inventor before: Wang Shimin Inventor before: He Chuan Inventor before: Shu Jicheng Inventor before: Li Zongjie Inventor before: Peng Xiaoyu Inventor before: Lou Rui Inventor before: Li Zhengxin |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240102 Address after: Block a, Tiejian building, 2666 Aoti West Road, Lixia District, Jinan City, Shandong Province Patentee after: CHINA RAILWAY SHISIJU Group Corp. Patentee after: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Patentee after: CHINA RAILWAY 14TH BUREAU GROUP SHIELD ENGINEERING Co.,Ltd. Patentee after: SOUTHWEST JIAOTONG University Address before: 610000 North Section of Second Ring Road, Chengdu City, Sichuan Province Patentee before: SOUTHWEST JIAOTONG University Patentee before: CHINA RAILWAY 14TH BUREAU GROUP SHIELD ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right |