CN104360047B - A kind of plate-type ballastless track closes die cavity self-compacting concrete dynamic stability evaluation methodology and device - Google Patents
A kind of plate-type ballastless track closes die cavity self-compacting concrete dynamic stability evaluation methodology and device Download PDFInfo
- Publication number
- CN104360047B CN104360047B CN201410662919.7A CN201410662919A CN104360047B CN 104360047 B CN104360047 B CN 104360047B CN 201410662919 A CN201410662919 A CN 201410662919A CN 104360047 B CN104360047 B CN 104360047B
- Authority
- CN
- China
- Prior art keywords
- die cavity
- self
- compacting concrete
- plate
- dynamic stability
- 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
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to a kind of plate-type ballastless track and close die cavity self-compacting concrete dynamic stability evaluation methodology and device, the method testing procedure: 1) perfusion autodensing concrete almixture in broach hopper (1)；2) mixture free-flow in the closing die cavity (3) of fluted (7) and built-in reinforced mesh (8)；3) when closing full mixture in die cavity, continue pressurize perfusion, until mixture rising 10cm in observation port (5), stop perfusion；4) weigh after just preparation and distance die cavity two ends 20cm autodensing concrete almixture, adopt 5mm square hole screen to sieve, calculate two kinds of lower mortars of mixture sieve and account for the difference of concrete ratio；5) static 15 minutes, the needle penetration of penetrometer (6) test observation port is adopted.The present invention can truly simulate filling process self-compacting concrete flow regime in closing die cavity, has simple operation, measuring accuracy height, is applicable to the features such as on-the-spot, it is adaptable to plate-type ballastless track self-compacting concrete dynamic stability Fast Evaluation.
Description
Technical field:
The invention belongs to the technical field of measurement and test of construction material, it is specifically related to a kind of plate-type ballastless track and closes die cavity self-compacting concrete dynamic stability evaluation methodology and device, suitable in the evaluation of self-compacting concrete, Cracking of High Flowing Concrete dynamic stability, it is particularly well-suited to high-speed railway CRTSII plate-type non-fragment orbit Cha Qu and the evaluation of CRTSIII plate-type non-fragment orbit closing die cavity self-compacting concrete dynamic stability.Background technology:
With concrete material self intelligent power realize structure from filling and self-compaction function be the important technical revolution utilizing material property to solve to be caused Structural Endurance Problem by construction factor.As the concrete Typical Representative self-compacting concrete of intelligent power because its height can application property, Technical Economy and environment friendly be applied to having in the CRTSIII plate-type ballastless track structure of China's independent intellectual property right.The version that CRTSIII plate-type non-fragment orbit filling bed is special, proposes new technology and requires filling bed self-compacting concrete: the filling bed closing die cavity that track plates and base are constituted determines self-compacting concrete and should have high Self-leveling performance and good foam stability energy.In filling bed closed die cavity space, the multiple inhibition such as the limited impression on reinforced mesh, base and the gate muscle at the bottom of track plates requires that filling bed concrete should have good gap by property, from Packing character and education resistance.Bottom filling bed, the water absorption character of geotextiles sealing coat flexible foundation and great friction coefficient determine filling bed self-compacting concrete and should possess high fluidity and high-moisture-retention.At the self-compacting concrete that this closing die cavity of plate-type ballastless track uses, should considering that self-compacting concrete has enough mobility, self-compacting concrete can irrigate whole die cavity；Considering that self-compacting concrete has suitable stability again, at self-compacting concrete filling process and self-compacting concrete quiescing process, the aggregate in autodensing concrete almixture must not isolate.
Self-compacting concrete stability can be divided into static isolation and dynamically isolate.Static stability refers to after concreting completes, and before hardening, interior generation during this period of time, is often vertical direction；Dynamic stability refers to and occurs in concrete transportation, casting process, is often horizontal direction.Research currently for static stability is more, also brings in self-compacting concrete relevant criterion.Foreign Japan and American-European self-compacting concrete Specification, self-compacting concrete Detection of Stability is proposed corresponding index by China's Specification, " self-compacting concrete direction of design and construction " (CCES02-2004) proposes the test of mixture stability jumping table, it is proposed that coarse aggregate vibration isolation rate is not more than the requirement of 10%.Accordingly, " self-dense concrete mixture stability testing device " (ZL200720062718.9) openly knows clearly employing static state isolation post method to evaluate the stability of autodensing concrete almixture, this device includes Detection of Stability cylinder and jumping table, Detection of Stability honor is that equivalently-sized (diameter is φ 115mm by three joints, height 100mm) cylinder stack together, descending most pitch circle column casing to be provided with base plate, Detection of Stability cylinder is placed in jumping table.Two cylindrical drum joints are provided with prominent limit, and fix with bolt.The internal diameter of described cylindrical drum is 115mm, is highly 100mm.Described jumping table amplitude is 25 ± 2mm, vibration per second 1 time, and vibration number is 25 times." self-compacting concrete direction of design and construction " (CCES02-2004) proposes self-compacting concrete hardenite homogeneity should meet the requirement less than 15mm of the thickness of maturing upper surface screed, but does not provide corresponding detection method." self-compacting concrete application technology code " (CECS203-2006) proposition V-type funnel evaluates self-compacting concrete education resistance by the time, and self-compacting concrete education resistance is divided into Three Estate, one-level: 10-25s, two grades: 7-25s, three grades: 4-25s.The capacity of V-type funnel is about 10L, and making material can be metal or plastics, is provided with the bottom quickly opening and having watertightness at the position of leak discharging opening." self-compacting concrete application technology code " (JGJ/T283-2012) proposes employing isolation rate and coarse aggregate vibration isolation rate two indices to evaluate the education resistance of self-compacting concrete, isolation rate is divided into two grades, namely less than 20% with less than 15%, isolation rate Cleaning Principle is based in autodensing concrete almixture aggregate and under static state sinks, in test cylinder (total height 300mm) upper strata (60mm), mortar accounts for concrete ratio, and mortar is to adopt the square hole screen that 5mm crossed by concrete to obtain；Coarse aggregate vibration isolation rate test method is the same with " self-compacting concrete direction of design and construction " with evaluation criterion.Along with the expansion of self-compacting concrete range of application, the stability of autodensing concrete almixture becomes the key determining its application, and numerous scholars begin one's study self-compacting concrete static stability and dynamic stability gradually.The evaluation of self-compacting concrete stability substantially can be divided into several big class: the first kind is visualization estimation of stability, the method is measuring self-compacting concrete divergence while, it is four grades according to aggregate distribution in mixture, bleeding ring around by the analysis of stability of self-compacting concrete, the method has the features such as simple, and is included into " TestMethodforSlumpFlowofSelf-ConsolidatingConcrete " (ASTMC1611-2014).Equations of The Second Kind is sieve analysis, take 10 ± 0.5L autodensing concrete almixture and be placed in bucket, and cover lid, square hole screen poured into by the concrete weighing a barrel top (4.8 ± 0.2) kg after level place stands 15min from 50 ± 5cm position, sieve top, weighs the mortar by sieve and is taken concrete mass ratio.3rd class is static isolation post method, the method is in the cylinder by one more piece cylinder of self-compacting concrete, test of the static a period of time the superiors and the aggregate distribution in orlop autodensing concrete almixture, the method is included into " TestMethodforStaticSegregationofSelf-ConsolidatingConcre teUsingColumnTechnique " (ASTMC1610-2014).4th class additive method, additive method includes electrical conductivity method, sinks to test method(s) etc., but these methods are in conceptual phase more and not yet carry out practical engineering application.The research that concrete is dynamically isolated to be lacked a lot compared to static state, but most researchs all think that dynamically isolation is that concrete occurs gradually after flowing through time one relatively long or distance, or due to the extruding with template in casting process, the effects such as collision occur rapidly, and it depends on concrete flow behavior and the surface character of suspension medium.Self-compacting concrete dynamic stability method of testing mainly has: flowing channel process and swing case test method(s) etc..The test philosophy of flowing channel process is to utilize autodensing concrete almixture to flow through the content difference of aggregate after the skewed slot with certain gradient, autodensing concrete almixture flows through the chute with 7 ° of 1.83m, not having any barrier, there is sensitivity difference, is not suitable for the problems such as scene in the method.Swing the testing procedure of case test method(s): poured in the middle part of swing case by self-compacting concrete, measure the initial depth of penetration in position, instrument warping part, then with the speed of each two seconds, swing back and forth 60 times, finally make instrument keep balance, again measure and tilt position depth of penetration.The advantage of the method be the number of oscillations that utilizes and swing case can the flow distance of simulation concrete mixture, shortcoming swings in case and is not provided with obstacle, it is impossible to reflection self-compacting concrete flow regime in practical structures.Although there being now the research of self-compacting concrete dynamic stability, but any method of testing is not had to gain unanimous acceptance not yet.The detection method of the proposed self-compacting concrete dynamic stability of feature such as die cavity, multiple obstruction (groove, reinforced mesh) is not more closed for CRTSIII plate-type non-fragment orbit self-compacting concrete layer.
Summary of the invention:
The present invention is directed to and lack the present situation that high-speed railway plate type ballastless track closing die cavity self-compacting concrete dynamic stability is evaluated, invented a kind of there is visualization, suitable in on-the-spot and mixture method for estimating stability and the device of flow regime die cavity can be closed at non-fragment orbit by the board-like self-compacting concrete of objective simulation, to realize the field control to high-speed railway plate type ballastless track autodensing concrete almixture stability, it is proposed to the present invention.
Technical scheme: a kind of plate-type ballastless track closes die cavity self-compacting concrete dynamic stability evaluation methodology and device, the method testing procedure: 1) in broach hopper 1, irrigate autodensing concrete almixture；2) mixture free-flow in the closing die cavity 3 with fluted 7 and built-in reinforced mesh 8；3) when closing full mixture in die cavity, continue pressurize perfusion, until mixture rising 10cm in observation port 5, stop perfusion；4) weigh after just preparation and distance die cavity two ends 20cm autodensing concrete almixture, adopt 5mm square hole screen to sieve, calculate two kinds of lower mortars of mixture sieve and account for the difference of concrete ratio；5) static 15 minutes, penetrometer 6 is adopted to test the needle penetration of observation port.
Described broach hopper 1 is fixed on support 2.
Described die cavity of closing is of a size of 120cm × 60cm × 10cm, and material is lucite.
Described closing mold cavity bottoms arranges the groove 7 of 2 10cm × 60cm × 10cm.
Described closed die intracavity puts reinforced mesh 8, is of a size of 120cm × 60cm, and reinforced mesh is made up of longitudinally 3, the laterally reinforcing bar of 6 φ 10mm.
The described base plate closing die cavity can be dismantled, and base plate can be laid geotextiles.
The described cylinder that observation port 5 is φ 8cm × 20cm, is placed in directly over groove.
The described cylindrical drum that penetrometer 6 is aluminium alloy or plastics, internal diameter, height and thickness respectively 75mm, 50mm and 1mm, weight is 40-60g.
Described needle penetration test, after irrigating complete static 15 minutes, penetrometer 6 respectively measures 3 points at observation port 5 and fill orifice 4.
The mechanism of the present invention: by the closing die cavity of realistic simulation plate-type ballastless track self-compacting concrete layer and perfusion operating mode, adopt die cavity to reflect the closing space that autodensing concrete almixture flows；The obstacle of the simulation autodensing concrete almixture flow process such as reinforced mesh, groove is set in employing；Fully reflect self-compacting concrete flow regime in die cavity.Close die cavity and adopt lucite material, self-compacting concrete flow regime can be made to visualize.
Advantages of the present invention: (1) truly simulation self-compacting concrete closes the flow regime under die cavity, multiple obstruction state at non-fragment orbit, it is possible to objectively respond the essence of self-compacting concrete dynamic stability；(2) test equipment is simple, and method of testing is convenient, is applicable not only to the preparation of test chamber self-compacting concrete, is also applied for the quality control of job site self-compacting concrete；(3) the manufacturability simulation test of CRTSIII plate-type non-fragment orbit self-compacting concrete can be substituted, reduce and take off plate number of times.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is broach hopper and support bracket fastened structural representation in Fig. 1.
Fig. 3 is the structural representation closing die cavity in Fig. 1.
Fig. 4 is the structural representation of penetrometer in Fig. 1.
In figure: 1-broach hopper, 2-fixed support, 3-close die cavity, 4-fill orifice, 5-observation port, 6-penetrometer, 7-groove, 8-reinforced mesh.
Detailed description of the invention:
By the examples below, and in conjunction with accompanying drawing, technical scheme is done further illustrate.
Embodiment: autodensing concrete almixture is encased in broach hopper 1, autodensing concrete almixture free-falling is allowed to enter closing die cavity 3 from fill orifice 4, autodensing concrete almixture free-flow in closing die cavity 3, after self-compacting concrete reaches surrounding, will gradually with die cavity upper surface, reach to a certain degree, mixture will overflow from observation port 5, when mixture exceeds die cavity 10cm, stop perfusion.Weigh the autodensing concrete almixture after just preparation and the mixture at distance 20cm place, die cavity end, 5mm square hole screen is adopted to sieve, calculating two kinds of lower mortars of mixture sieve and account for the difference of concrete ratio, when the difference of slurry is less than 10%, self-compacting concrete dynamic stability is better；After static 15 minutes, test the needle penetration of observation port and fill orifice with penetrometer 6.After needle penetration head places the 15-20 second, reading the depth of penetration of penetrometer, when penetrometer needle penetration is less than 20mm, autodensing concrete almixture has good stability.
The above-mentioned description to embodiment is for ease of those skilled in the art it will be appreciated that and apply the present invention.These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art's announcement according to the present invention, the improvement made for the present invention and amendment all should within protection scope of the present invention.
Claims (8)
1. a plate-type ballastless track closes die cavity self-compacting concrete dynamic stability evaluation methodology, it is characterised in that: 1) perfusion autodensing concrete almixture in broach hopper (1)；2) mixture free-flow in the closing die cavity (3) of fluted (7) and built-in reinforced mesh (8)；3) when closing full mixture in die cavity, continue pressurize perfusion, until mixture rising 10cm in observation port (5), stop perfusion；4) weigh after just preparation and distance die cavity two ends 20cm autodensing concrete almixture, adopt 5mm square hole screen to sieve, calculate two kinds of lower mortars of mixture sieve and account for the difference of concrete ratio；5) static 15 minutes, the needle penetration of penetrometer (6) test observation port is adopted；6) described closing die cavity (3) bottom arranges the groove (7) of 2 10cm × 60cm × 10cm.
2. plate-type ballastless track according to claim 1 closes die cavity self-compacting concrete dynamic stability evaluation methodology, it is characterised in that: described broach hopper (1) is fixed on support (2).
3. plate-type ballastless track according to claim 1 closes die cavity self-compacting concrete dynamic stability evaluation methodology, it is characterised in that: described closing die cavity (3) is of a size of 120cm × 60cm × 10cm, and material is lucite.
4. plate-type ballastless track according to claim 1 and 2 closes die cavity self-compacting concrete dynamic stability evaluation methodology, it is characterized in that: described built-in reinforced mesh (8) is of a size of 120cm × 60cm, reinforced mesh is made up of longitudinally 3, the laterally reinforcing bar of 6 φ 10mm.
5. plate-type ballastless track according to claim 1 and 2 closes die cavity self-compacting concrete dynamic stability evaluation methodology, it is characterised in that: the base plate closing die cavity (3) can be dismantled, and base plate can be laid geotextiles.
6. plate-type ballastless track according to claim 1 closes die cavity self-compacting concrete dynamic stability evaluation methodology, it is characterised in that: observation port (5) is the cylinder of φ 10cm × 20cm, is placed in the surface of groove (7).
7. plate-type ballastless track according to claim 1 closes die cavity self-compacting concrete dynamic stability evaluation methodology, it is characterized in that: the cylindrical drum that penetrometer (6) is aluminium alloy or plastics, internal diameter, height and thickness respectively 75mm, 50mm and 1mm, weight is 40-60g.
8. plate-type ballastless track according to claim 1 closes die cavity self-compacting concrete dynamic stability evaluation methodology, it is characterised in that: after irrigating complete static 15 minutes, 3 points measured by penetrometer (6) in observation port (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662919.7A CN104360047B (en) | 2014-11-20 | 2014-11-20 | A kind of plate-type ballastless track closes die cavity self-compacting concrete dynamic stability evaluation methodology and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662919.7A CN104360047B (en) | 2014-11-20 | 2014-11-20 | A kind of plate-type ballastless track closes die cavity self-compacting concrete dynamic stability evaluation methodology and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104360047A CN104360047A (en) | 2015-02-18 |
| CN104360047B true CN104360047B (en) | 2016-06-29 |
Family
ID=52527328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410662919.7A Active CN104360047B (en) | 2014-11-20 | 2014-11-20 | A kind of plate-type ballastless track closes die cavity self-compacting concrete dynamic stability evaluation methodology and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104360047B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777078B (en) * | 2015-05-11 | 2017-06-09 | 中南大学 | Filling bed self-dense concrete mixture stability testing device and its method of testing |
| CN108548750A (en) * | 2018-04-28 | 2018-09-18 | 中建西部建设西南有限公司 | A kind of device and method of evaluation pervious concrete mix physical performance |
| CN108982820A (en) * | 2018-07-19 | 2018-12-11 | 北京工业大学 | A kind of device and method of construction site detection concrete disintegration rate and stability |
| CN109342267B (en) * | 2018-11-19 | 2024-05-10 | 中铁十七局集团第一工程有限公司 | CRTS III type ballastless track self-compaction concrete test instrument |
| CN109440652B (en) * | 2018-12-11 | 2024-02-06 | 中交一公局集团有限公司 | Full-scale model of fabricated bent cap pier pile and crack pouring construction process using full-scale model |
| CN110672455B (en) * | 2019-10-21 | 2022-09-30 | 武汉美好绿色建筑科技有限公司 | Self-compacting concrete homogeneity testing device and method |
| CN116289353B (en) * | 2023-03-02 | 2023-12-19 | 江苏科技大学 | Device for reducing filling layer self-compaction concrete filling segregation degree and operation method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979545Y (en) * | 2006-11-10 | 2007-11-21 | 北京工业大学 | A multifunctional self-compacting concrete workability detector |
| CN201016975Y (en) * | 2007-03-16 | 2008-02-06 | 中南大学 | Self-dense concrete mixture stability testing device |
| CN201159736Y (en) * | 2007-12-28 | 2008-12-03 | 河海大学 | Combined appraisement device for service behavior of self-compacting concrete |
| CN101893538A (en) * | 2010-07-16 | 2010-11-24 | 中南大学 | Self-compacting concrete filling performance testing device |
| CN202018414U (en) * | 2010-12-23 | 2011-10-26 | 中国铁道科学研究院铁道建筑研究所 | Working performance comprehensive test device for self-filling concrete for high speed railway slab ballastless tracks |
| CN102778556A (en) * | 2011-05-09 | 2012-11-14 | 同济大学 | Testing method for working performance of concrete and apparatus implementing same |
| CN203053818U (en) * | 2013-02-04 | 2013-07-10 | 哈尔滨学院 | Measurement instrument for working property of self-compacting concrete |
| CN103926392A (en) * | 2014-04-14 | 2014-07-16 | 浙江建设职业技术学院 | Testing device for working performance of self-compacting concrete |
-
2014
- 2014-11-20 CN CN201410662919.7A patent/CN104360047B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979545Y (en) * | 2006-11-10 | 2007-11-21 | 北京工业大学 | A multifunctional self-compacting concrete workability detector |
| CN201016975Y (en) * | 2007-03-16 | 2008-02-06 | 中南大学 | Self-dense concrete mixture stability testing device |
| CN201159736Y (en) * | 2007-12-28 | 2008-12-03 | 河海大学 | Combined appraisement device for service behavior of self-compacting concrete |
| CN101893538A (en) * | 2010-07-16 | 2010-11-24 | 中南大学 | Self-compacting concrete filling performance testing device |
| CN202018414U (en) * | 2010-12-23 | 2011-10-26 | 中国铁道科学研究院铁道建筑研究所 | Working performance comprehensive test device for self-filling concrete for high speed railway slab ballastless tracks |
| CN102778556A (en) * | 2011-05-09 | 2012-11-14 | 同济大学 | Testing method for working performance of concrete and apparatus implementing same |
| CN203053818U (en) * | 2013-02-04 | 2013-07-10 | 哈尔滨学院 | Measurement instrument for working property of self-compacting concrete |
| CN103926392A (en) * | 2014-04-14 | 2014-07-16 | 浙江建设职业技术学院 | Testing device for working performance of self-compacting concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104360047A (en) | 2015-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104360047B (en) | A kind of plate-type ballastless track closes die cavity self-compacting concrete dynamic stability evaluation methodology and device | |
| Saha et al. | Fracture properties of asphalt mixtures using semi-circular bending test: A state-of-the-art review and future research | |
| CN202018414U (en) | Working performance comprehensive test device for self-filling concrete for high speed railway slab ballastless tracks | |
| CN101893538B (en) | Self-compacting concrete filling performance testing device | |
| CN103675244B (en) | Concrete homogeneity testing method | |
| Zhou et al. | Experimental and analytical study of X-section cast-in-place concrete pile installation effect | |
| Chen et al. | Investigation of permeability of open graded asphalt mixture considering effects of anisotropy and two-dimensional flow | |
| CN109098161B (en) | Device and method for testing shear wave velocity of layered rolling roadbed in all directions | |
| CN105808836A (en) | Method for determining temperature history curve of mass concrete with ultrahigh content of fly ash | |
| Ranieri et al. | Measurement of hydraulic conductivity in porous mixes | |
| CN104777078B (en) | Filling bed self-dense concrete mixture stability testing device and its method of testing | |
| CN110231115A (en) | Simulate the device and method of plastic zone of surrounding rock development and liquid liner structure mechanical response under different supporting power | |
| Kim et al. | Flow behaviour and piping potential at the soil–structure interface | |
| Liu et al. | Construction techniques and quality test and evaluation of lightweight cellular concrete mixed with fly ash as subgrade material | |
| Frappa et al. | Destructive and non-destructive tests on columns and cube specimens made with the same concrete mix | |
| Che et al. | Relationship between air voids and permeability: Effect on water scouring resistance in HMA | |
| Liu et al. | Methods for testing the quality of lightweight cellular concrete during pouring | |
| Alvarez et al. | Optimizing the design of permeable friction course mixtures | |
| Sun et al. | Study on deformation behavior and prediction model of asphalt mixture based on interface-slip characteristics of aggregates | |
| El Zein et al. | Evaluation of internal bleeding in concrete foundation from the Terzaghi’s effective stress postulate | |
| CN108398319B (en) | Ultra-high water filling material creep test device and use method thereof | |
| CN104359794B (en) | A kind of plate-type ballastless track closed cavity self-compacting concrete static stability evaluation method and device | |
| Issa et al. | Modelling compactibility of RCC specimens using the asphalt gyratory compactor | |
| TWI220681B (en) | A simulation system and method of a grouting test body | |
| Pei et al. | Research on mechanical characteristics and energy dissipation of traditional ramming technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Tongjun Inventor after: Li Huajian Inventor after: Tan Yanbin Inventor after: Yi Zhonglai Inventor after: Huang Fali Inventor after: Xie Yongjiang Inventor after: Li Linxiang Inventor after: Cheng Guanzhi Inventor before: Li Huajian Inventor before: Tan Yanbin Inventor before: Yi Zhonglai Inventor before: Huang Fali Inventor before: Xie Yongjiang Inventor before: Li Linxiang Inventor before: Cheng Guanzhi |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100081 Beijing city Haidian District Daliushu Road No. 2 Patentee after: Railway Construction Research Institute of China Railway Research Institute Group Co., Ltd. Address before: 100081 Beijing city Haidian District Daliushu Road No. 2 Patentee before: Railway Construction Institute of China Academy of Railway Sciences |