CN106120578A - A kind of construction method of mountain highway buried garden pipe culvert control critical eigenvalue - Google Patents
A kind of construction method of mountain highway buried garden pipe culvert control critical eigenvalue Download PDFInfo
- Publication number
- CN106120578A CN106120578A CN201610493924.9A CN201610493924A CN106120578A CN 106120578 A CN106120578 A CN 106120578A CN 201610493924 A CN201610493924 A CN 201610493924A CN 106120578 A CN106120578 A CN 106120578A
- Authority
- CN
- China
- Prior art keywords
- pipe culvert
- garden
- roadbed
- buried
- bed course
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses the construction method of a kind of mountain highway buried garden pipe culvert control critical eigenvalue, step is as follows: 1) filling roadbed to garden pipe culvert top design height；2) excavation roadbed and ground are to garden pipe culvert substrate designed elevation；3) pour garden pipe culvert substrate, and carry out maintenance；4) prefabricated garden pipe culvert is installed, and the soil arch arranging half moon-shaped employing elastic-plastic material at pipe culvert top guides bed course, and its two ends extend respectively to the two ends of the horizontal external diameter of pipe culvert；5) layering Bu Tian garden pipe culvert periphery roadbed, and hand compaction；6) soil layer more than pipe culvert top is carried out layered rolling, filling roadbed to designed elevation.The present invention guides bed course by arranging half moon-shaped soil arch on pipe culvert so that soil arch upper load is transferred to neighbouring roadbed and undertakes.The garden rectangular distribution of pipe culvert design load is similar to the distribution of slump body more than garden pipe culvert actual loading, and its upper load is transferred to neighbouring roadbed and undertakes, it is ensured that within garden pipe culvert stress is less than design load and is in safety range, prevent cracking.
Description
Technical field
The invention belongs to engineering construction field, be specifically related to the construction party of a kind of mountain highway buried garden pipe culvert control critical eigenvalue
Method.
Background technology
Along with the enforcement of national novel balanced development among regions planning, need to build many mountain highways, buried garden pipe is set
Culvert is the economical method of high roadbed mountain highway.Pipe culvert is owing to can concentrate making, and cost is relatively low, it is simple to quality control
System, construction and installation are convenient, for design discharge less time, banketed certain altitude, uses pipe culvert as highway drainage, irrigation
Structures fairly common.Therefore, pipe culvert design and produce and construction quality to construction costs, project progress and use effect
Fruit impact is the biggest.In Practical Project, pipe culvert crack is very universal, and investigation shows, pipeline cracking accounts for 63.5%, and wherein 70% is vertical
To cracking.
The Causes of Fracture of pipe culvert is more complicated, relates to design, processing technology and construction each side.Reinforcing bar in Practical Project
Concrete circular pipe culvert is often because in a certain respect or many reasons, such as the making of steel reinforcement cage, prefabricated, maintenance, pipe culvert base
The dealing with improperly of link such as plinth processes, tube coupling processes, backfill soil, the most then crack leaks and affects subgrade stability, heavy then cause embankment
Cave in, cause engineering accident, directly influence quality and the construction speed of engineering.But tracing it to its cause, pipe culvert cracking is main
Reason be that actual loading is beyond design load scope.Therefore, control the pipe culvert topmost method of cracking namely to control
The actual loading of pipe culvert.
Summary of the invention
It is an object of the invention to solve problems of the prior art, and a kind of mountain highway buried garden pipe culvert is provided
The construction method of control critical eigenvalue, to reduce the actual loading of pipe culvert, prevents cracking.
The technical solution adopted in the present invention is as follows:
A kind of construction method of mountain highway buried garden pipe culvert control critical eigenvalue, step is as follows:
1) filling roadbed to garden pipe culvert top design height；
2) excavation roadbed and ground are to garden pipe culvert substrate designed elevation；
3) pour garden pipe culvert substrate, and carry out maintenance；
4) installing prefabricated garden pipe culvert, and arrange half moon-shaped soil arch guiding bed course at pipe culvert top, described soil arch draws
Lead bed course and use elastic-plastic material, and its two ends extend respectively to the two ends of the horizontal external diameter of pipe culvert；Half moon-shaped soil arch guides
Bed course patch pipe culvert outer wall is arranged；
5) layering Bu Tian garden pipe culvert periphery roadbed, and hand compaction；
6) soil layer more than pipe culvert top is carried out layered rolling, filling roadbed to designed elevation.
The theoretical foundation of the present invention is as follows:
From mechanical concept, existing buried garden pipe culvert job specfication does not illustrates how buried garden pipe culvert avoids cracking risk to ask
Topic.How applicant creatively directly avoids cracking risk with mechanics methods analyst buried garden pipe culvert, and find buried garden to manage
The control cracking method contained.
The first step is directly with mechanics methods analyst buried garden pipe culvert Cracks:
From Fig. 1 (a), buried garden pipe culvert design load PDesign=H × D (1.1)
Owing to garden pipe culvert rigidity is less than garden pipe culvert actual loading more than subgrade stiffness, the garden rectangular distribution of pipe culvert design load
Being distributed in similar inverted trapezoidal, shallow embedding garden pipe culvert exceeds the quata stress within safety range；The pipe culvert stress that exceeds the quata in buried garden can cause garden
Pipe culvert ftractures, and the weak part of the most buried garden pipe culvert or link are garden pipe culvert crackings, it should prevent from inducing detrimental effect power
With the transfer of energy Dou Xiang garden pipe culvert structure or concentration effect.The most buried garden pipe culvert actual loading
PActual=H × (D+Hsin α) (1.2)
Wherein H is the above height of embankment in pipe culvert top, garden；D is garden pipe culvert diameter；α is actual loading extended corner；PDesignFor deeply
Bury garden pipe culvert design load；PActualFor buried garden pipe culvert actual loading.
Obviously PActual＞ PDesign (1.3)
If PActualExceeding buried garden pipe culvert allowable stress, buried garden pipe culvert will necessarily produce crack.
Second step is directly by mechanics method searching buried garden pipe culvert minimizing load method:
From Fig. 1 (b), Fig. 2, formula (1.4), formation soil arch is set at pipe culvert top, buried garden roadbed and guides bed course,
The elastic-plastic materials such as the foam of such as thick D/6～D/4, then carry out embankment construction, on bed course, roadbed block or granule have sinking to become
Gesture but run into bed course and hinder, periphery roadbed can produce top roadbed block or the holding power of granule, and self-assembling formation soil encircles, soil
Arch upper load is transferred to neighbouring roadbed and undertakes, and the equation of equilibrium of pipe culvert top, the most buried garden roadbed is as follows:
P1cosα1+P2cosα2+ T=W (1.4)
In formula (1.4), mutual holding power between P1, P2 roadbed block or granule；W roadbed gravity；T garden
Pipe culvert top roadbed pressure (pressure T is the least for roadbed).
Therefore, the garden rectangular distribution of pipe culvert design load is similar to the distribution of slump body, its top more than garden pipe culvert actual loading
Load transfer undertakes to neighbouring roadbed, and so no matter shallow embedding or buried garden pipe culvert stress are all within safety range, and garden pipe culvert is not
Can ftracture.The most buried garden pipe culvert actual loading
PActual=D/2 × D (1.5)
Wherein H approximates D/2, much smaller than the above height of embankment in pipe culvert top, garden；
Obviously PActual＜ PDesign (1.6)
So part embankment load transfer undertakes to neighbouring roadbed, and buried garden pipe culvert will not produce crack naturally.
It addition, soil arch guides the two ends of bed course to extend respectively to the two ends of pipe culvert horizontal direction external diameter, the most half moon-shaped
Two acute angles lay respectively at the point of intersection of pipe culvert outer wall and the horizontal plane through the center of circle.Applicant finds under study for action, if native
Arch guides the two ends of bed course not extend to the two ends of pipe culvert horizontal direction external diameter, and the actual loading formed can be greatly increased.
Still being acted on by trapezoidal load on the section tubular wall of bed course because guiding for overburden soil arch, may be led under part extreme case
Cause actual loading still more than design load, cause pipe culvert to ftracture.
As preferably, described soil arch guides thickness thickness is garden pipe culvert internal diameter the 1/6～1/4 of bed course.
As preferably, described soil arch guides the elastic properties of materials of bed course need to meet following condition: buried garden pipe culvert designs lotus
When loading capacity acts on meniscus elastoplasticity subgrade soils arch guiding bed course, the soil arch caused guides bed course compression little
In 20%.
Above-mentioned soil arch guides the thickness of bed course and aeroelastic requirements to be all that applicant is obtained through lot of experiments, buried garden
The thickness of pipe culvert and compression all can affect the actual loading transfer amount that it is above-mentioned.Actual loading to be made is formed such as Fig. 1 (b)
Load mode, when design load weight acts on meniscus elastoplasticity subgrade soils arch guiding bed course, the compression caused
Must be not more than 20%, otherwise, bed course compression is excessive, and bed course cannot preferably encircle by self-assembling formation soil, therefore its transfer road
The effect of base upper design load is the most poor, still may can produce the load mode of similar Fig. 1 (a) so that actual lotus
Load is likely larger than design load, is likely to result in buried garden pipe culvert cracking.Elastic-plastic material can use foam, it is possible to uses other to have
The current material of flexible deformation nature.
As preferably, described step 1) before need, according to measuring roadbed scope, to clear up foundation surface foreign material.
As preferably, described soil arch guides bed course to be bilateral symmetry.Can keep under symmetrical state as far as possible
Pipe culvert accept uniformity, prevent its long-term pressurized irregular cause cracking.
As preferably, described step 1) in, the roadbed thickness that every layer is filled is 50cm.
As preferably, described step 6) in, the roadbed thickness that every layer is rolled is 50cm.
The present invention guides bed course by arranging half moon-shaped soil arch on pipe culvert so that carry out embankment construction, bed course again
Upper roadbed block or granule have sinking tendency but run into bed course and hinder, and periphery roadbed can produce top roadbed block or granule
Holding power, self-assembling formation soil encircles, and soil arch upper load is transferred to neighbouring roadbed and undertakes.The garden rectangular distribution of pipe culvert design load
Being similar to the distribution of slump body more than garden pipe culvert actual loading, its upper load is transferred to neighbouring roadbed and undertakes, it is ensured that garden pipe culvert stress
Less than design load and within being in safety range, prevent cracking.
Accompanying drawing explanation
Fig. 1 is buried garden pipe culvert stress characteristic schematic diagram, wherein: a) pipe culvert load in garden is similar inverted trapezoidal scattergram；b)
Garden pipe culvert load is the distribution of similar slump body；
Fig. 2 is that pipe culvert top, buried garden roadbed forms soil arch guiding bed course schematic diagram.
Detailed description of the invention
With detailed description of the invention the present invention it is further elaborated below in conjunction with the accompanying drawings and illustrates.In the present invention, each is implemented
The technical characteristic of mode, on the premise of not colliding with each other, all can carry out respective combination.
A kind of construction method of mountain highway buried garden pipe culvert control critical eigenvalue, step is as follows:
(1) cleaning foundation surface foreign material；
According to measuring roadbed scope, clearing up foundation surface foreign material, such as table soil, vegetation etc., prepare for filling roadbed.
(2) placement in layers roadbed is to garden pipe culvert overhead height；
According to roadbed code requirement every 50cm thickness layered rolling, filling roadbed to garden pipe culvert top design height.
(3) garden pipe culvert scope excavation roadbed and ground are to garden pipe culvert substrate designed elevation；
(4) pour garden pipe culvert substrate by design requirement, and carry out maintenance by specification；
(5) by design requirement, prefabricated garden pipe culvert, layering Bu Tian garden pipe culvert periphery roadbed, and hand compaction are installed.
(6) according to formula (1.4), by the form of Fig. 2, at pipe culvert top, buried garden, patch outer wall arranges symmetrical in newly
The soil arch of month shape guides bed course.Soil arch guide bed course use thickness thickness be the foam of D/6～D/4 as elastic-plastic material,
Process the crescent consistent with pipe culvert external diameter in internal diameter, thus can be covered in pipe culvert top.The concrete thickness of bed course regards top
Depending on portion's overlying soil, basic demand is that design load weight acts on meniscus elastoplasticity subgrade soils arch guiding bed course
Time, the compression caused must be not more than 20%.Half moon-shaped soil arch guides the two ends of bed course to extend to outside pipe culvert level
The two ends in footpath, in order to form the symmetrical actual loading soil arch shown in Fig. 1 (b), be otherwise likely to occur the unbalance loading shown in Fig. 1 (a) existing
As, it is likely to result in pipe culvert cracking.
(7) according to roadbed code requirement every 50cm thickness layered rolling, filling roadbed to designed elevation；Due to pipe culvert top, garden
Roadbed arranges formation soil arch and guides bed course, and its upper load is transferred to neighbouring roadbed and undertakes, rectangular point of garden pipe culvert design load
Cloth is similar to the distribution of slump body more than garden pipe culvert actual loading, so regardless of shallow embedding or buried garden pipe culvert stress all safety range it
In, garden pipe culvert will not ftracture.
Above-mentioned construction method is applied in the construction of certain railway division, the pipe culvert top, buried garden in this section is provided with
After above-mentioned soil arch guides bed course, within the use time of nearly 20 years, the most there is not crack in garden pipe culvert.Thus may certify that, this
Bright arranges the actual loading that soil arch guides the method for bed course can effectively reduce pipe culvert top, thus reduces its cracking wind
Danger.
Embodiment described above is the one preferably scheme of the present invention, and so it is not intended to limiting the invention.Have
Close the those of ordinary skill of technical field, without departing from the spirit and scope of the present invention, it is also possible to make various change
Change and modification.The technical scheme that the most all modes taking equivalent or equivalent transformation are obtained, all falls within the guarantor of the present invention
In the range of protecting.
Claims (7)
1. the construction method of a mountain highway buried garden pipe culvert control critical eigenvalue, it is characterised in that step is as follows:
1) filling roadbed to garden pipe culvert top design height；
2) excavation roadbed and ground are to garden pipe culvert substrate designed elevation；
3) pour garden pipe culvert substrate, and carry out maintenance；
4) installing prefabricated garden pipe culvert, and arrange half moon-shaped soil arch guiding bed course at pipe culvert top, described soil arch guides pad
Layer uses elastic-plastic material, and its two ends extend respectively to the two ends of the horizontal external diameter of pipe culvert；
5) layering Bu Tian garden pipe culvert periphery roadbed, and hand compaction；
6) soil layer more than pipe culvert top is carried out layered rolling, filling roadbed to designed elevation.
2. the construction method of the buried garden of mountain highway as claimed in claim 1 pipe culvert control critical eigenvalue, it is characterised in that described
Soil arch guides thickness thickness is garden pipe culvert internal diameter the 1/6～1/4 of bed course.
3. the construction method of the buried garden of mountain highway as claimed in claim 1 pipe culvert control critical eigenvalue, it is characterised in that described
Soil arch guides the elastic properties of materials of bed course need to meet following condition: buried garden pipe culvert design load weight acts on meniscus elastoplasticity
When subgrade soils arch guides on bed course, the soil arch caused guides bed course compression to be not more than 20%.
4. the construction method of the buried garden of mountain highway as claimed in claim 1 pipe culvert control critical eigenvalue, it is characterised in that described
Step 1) need before, according to measuring roadbed scope, to clear up foundation surface foreign material.
5. the construction method of the buried garden of mountain highway as claimed in claim 1 pipe culvert control critical eigenvalue, it is characterised in that described
Soil arch guides bed course to be bilateral symmetry.
6. the construction method of the buried garden of mountain highway as claimed in claim 1 pipe culvert control critical eigenvalue, it is characterised in that described
Step 1) in, the roadbed thickness that every layer is filled is 50cm.
7. the construction method of the buried garden of mountain highway as claimed in claim 1 pipe culvert control critical eigenvalue, it is characterised in that described
Step 6) in, the roadbed thickness that every layer is rolled is 50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610493924.9A CN106120578B (en) | 2016-06-29 | 2016-06-29 | A kind of construction method of the buried garden pipe culvert control critical eigenvalue of mountain highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610493924.9A CN106120578B (en) | 2016-06-29 | 2016-06-29 | A kind of construction method of the buried garden pipe culvert control critical eigenvalue of mountain highway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106120578A true CN106120578A (en) | 2016-11-16 |
| CN106120578B CN106120578B (en) | 2019-08-09 |
Family
ID=57285201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610493924.9A Active CN106120578B (en) | 2016-06-29 | 2016-06-29 | A kind of construction method of the buried garden pipe culvert control critical eigenvalue of mountain highway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106120578B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119697A (en) * | 2017-04-19 | 2017-09-01 | 广州市市政工程设计研究总院 | A kind of buried canal case and pipe gallery soil arch load-relieving structure and its construction method of drainning off floodwaters |
| CN108978501A (en) * | 2018-06-13 | 2018-12-11 | 中国水利水电第九工程局有限公司 | A kind of pipe culvert roadbed construction method on the road Tong Cun |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2520549A1 (en) * | 1975-05-09 | 1976-11-18 | Schleich Josef | Sets of building elements for civil engineering units - are formed from reinforced concrete members based on plastic tubes and shells |
| CN102535289A (en) * | 2012-01-09 | 2012-07-04 | 长沙理工大学 | Variable cross-section structure of roadbed deep infiltration trench and construction method thereof |
| CN203034383U (en) * | 2013-01-21 | 2013-07-03 | 山西省交通规划勘察设计院 | Load reduction high filling arch culvert |
| CN103952986A (en) * | 2014-05-19 | 2014-07-30 | 中国地质大学（武汉） | Load-shedding type rigid culvert structure |
| CN104153304A (en) * | 2014-04-08 | 2014-11-19 | 中交第二公路勘察设计研究院有限公司 | Corrugated steel tube culvert filling structure and filling method thereof |
| CN104947608A (en) * | 2015-06-04 | 2015-09-30 | 曹宁宁 | Steel corrugated plate arch culvert reinforced by steel frames |
-
2016
- 2016-06-29 CN CN201610493924.9A patent/CN106120578B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2520549A1 (en) * | 1975-05-09 | 1976-11-18 | Schleich Josef | Sets of building elements for civil engineering units - are formed from reinforced concrete members based on plastic tubes and shells |
| CN102535289A (en) * | 2012-01-09 | 2012-07-04 | 长沙理工大学 | Variable cross-section structure of roadbed deep infiltration trench and construction method thereof |
| CN203034383U (en) * | 2013-01-21 | 2013-07-03 | 山西省交通规划勘察设计院 | Load reduction high filling arch culvert |
| CN104153304A (en) * | 2014-04-08 | 2014-11-19 | 中交第二公路勘察设计研究院有限公司 | Corrugated steel tube culvert filling structure and filling method thereof |
| CN103952986A (en) * | 2014-05-19 | 2014-07-30 | 中国地质大学（武汉） | Load-shedding type rigid culvert structure |
| CN104947608A (en) * | 2015-06-04 | 2015-09-30 | 曹宁宁 | Steel corrugated plate arch culvert reinforced by steel frames |
Non-Patent Citations (3)
| Title |
|---|
| 李盛等: "高填黄土明洞土拱效应及土压力减载模型分析", 《土木工程学报》 * |
| 李祝龙等: "高填方路基钢波纹管涵洞土拱效应分析[1]", 《公路工程》 * |
| 马强: "高填方涵洞受力特性及新型格栅减载方法研究", 《中国博士学位论文全文数据库》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119697A (en) * | 2017-04-19 | 2017-09-01 | 广州市市政工程设计研究总院 | A kind of buried canal case and pipe gallery soil arch load-relieving structure and its construction method of drainning off floodwaters |
| CN108978501A (en) * | 2018-06-13 | 2018-12-11 | 中国水利水电第九工程局有限公司 | A kind of pipe culvert roadbed construction method on the road Tong Cun |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106120578B (en) | 2019-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100497841C (en) | Supporting leg type underground continuous wall construction method | |
| CN102080548B (en) | Construction method of tunnel to cross airport runway by shield method | |
| CN204645075U (en) | A kind of urban road soft foundation underground pipeline bracing means | |
| WO2020248596A1 (en) | Protection structure for preventing ground heave caused by tunnel grouting reinforcement and grouting method | |
| CN105274922B (en) | A kind of antiskid key steel-pipe pile composite construction and method for repairing landslide roadbed | |
| CN206902479U (en) | Ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure | |
| CN103486403A (en) | In-situ protection construction method of pipeline above foundation pit | |
| US20180030684A1 (en) | Arched cut-and-cover structure and method of its construction | |
| CN104060631B (en) | A kind of manhole mouth elevation Dynamic controlling structure | |
| CN106988334B (en) | A kind of open caisson support construction and open caisson construction method | |
| CN107130475A (en) | Ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure and method | |
| CN105804119A (en) | Underground corridor structure with dual-purpose pile foundations and construction method of underground corridor structure | |
| CN107905811B (en) | Inverted arch-free lining of foundation hollow longitudinal beam bearing arch structure | |
| CN114413839B (en) | Device and method for monitoring complete stacking section of up-down stacking type tunnel | |
| CN107100629B (en) | Control method and structure for plastic deformation of soft soil layer lying under shield tunnel | |
| CN206328650U (en) | A kind of highway subgrade pipe strengthening structure | |
| CN106120578A (en) | A kind of construction method of mountain highway buried garden pipe culvert control critical eigenvalue | |
| CN105926376A (en) | Construction method of rubber springs of point support type track structure | |
| CN204533812U (en) | A kind of slurry-water balance type jacking construction system | |
| CN104612142A (en) | Integral abutment bridge structure based on composite flexible piles and construction method thereof | |
| CN207452609U (en) | A kind of hassock layer Foam lightweight soil road structure in deep soft foundation section | |
| CN106676988A (en) | Construction method for permeable wall type ventiduct roadbed | |
| CN107940102B (en) | Underground raw water pipeline protection construction method | |
| CN208817103U (en) | A kind of buried oil/gas pipe protection falling rocks structure | |
| CN107012802A (en) | A kind of construction method of RPM highway culvert |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190903 Address after: Room 100, 1st floor, Building 3, No. 1 Kangqiao East Road, Pudong New District, Shanghai Co-patentee after: Tibet Ganoderma Lucidum Construction Consulting Group Co., Ltd. Patentee after: Shanghai Langzhao Highway and Railway Maintenance Engineering Technology Co., Ltd. Address before: Room 100, 1st floor, Building 3, No. 1 Kangqiao East Road, Pudong New District, Shanghai Patentee before: Shanghai Langzhao Highway and Railway Maintenance Engineering Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |