CN106869167A - The bowed out box shape steel structure Urban Underground pipe gallery in section - Google Patents
The bowed out box shape steel structure Urban Underground pipe gallery in section Download PDFInfo
- Publication number
- CN106869167A CN106869167A CN201710129345.0A CN201710129345A CN106869167A CN 106869167 A CN106869167 A CN 106869167A CN 201710129345 A CN201710129345 A CN 201710129345A CN 106869167 A CN106869167 A CN 106869167A
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- China
- Prior art keywords
- piping lane
- sheet bar
- pipe gallery
- underground pipe
- unit sheet
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a kind of bowed out box shape steel structure Urban Underground pipe gallery in section, including the unit sheet bar by being located at top and bottom and two sides respectively, circumferentially assembly forms unit tube coupling, the unit tube coupling is assembled vertically to form piping lane, the unit sheet bar is the arc-shaped steel corrugated plating to arch camber on the outside of piping lane, its ripple lines is vertical with piping lane axial line, the inner radius of both sides unit sheet bar are more than 0.5 times of cornerwise length of piping lane, and the width of piping lane is more than 0.5 times of its height and less than 2 times of its height；Wherein, the cornerwise length of piping lane is with the circumferential tie point of adjacent cells plate as measurement point.The present invention is limited the inner radius and the ratio of width to height of piping lane two side unit sheet bar, so that the radius of sidewall paneling piece is big, curvature is small, can guarantee that the height of piping lane and vertical supports, improve the saturation of the hydroelectric line of support, vertical supports can be close proximity to the side wall of piping lane simultaneously, intermediate space is conceded, piping lane inside headroom utilization rate is improve.
Description
Technical field
It is comprehensive the present invention relates to a kind of underground pipe gallery, more particularly to a kind of bowed out box shape steel structure Urban Underground in section
Close piping lane.
Background technology
Present Urban Underground pipe gallery, major part is to use reinforced concrete structure, because concrete structure is firm
Property structure (stiffness by itself big, resistance capacity to deformation is strong), seldom, corridor body is wide or too high, will not cause in corridor body for deflection
Pipe support and pipeline deformation and infringement, meanwhile, the cross sectional shape of these piping lanes can be rectangle, and main cause will utilize both sides
Side wall cloth sets vertical support, and all kinds of hydroelectric lines are laid on vertical support, and these vertical supports are easily worked, and holds
Pipeline amount of receiving is big, and pipeline easily lays installation.Although rigidity is big, be unlikely to deform be rigid structure piping lane advantage, piping lane ground
Can all there is the sedimentation period of 2~3 months after lower engineering backfill, backfill soil compactness is difficult to ensure that unanimously, during sedimentation period
Differential settlement is will result in, rigid structure piping lane stress raisers after differential settlement is run into are obvious, and overall structure is received
Power is not good, so as to also cause reinforced concrete pipe gallery to exist, wall thickness requirement is big, cost is high, transport installation difficulty the problems such as.
As shown in Figure 1-2, if piping lane section is circular oval, support must also do in the arc-shaped, consistent with piping lane section, but
Arc support processing difficulties, bearing capacity is low, and laying hydroelectric line time space carrying capacity is poor, cumbersome difficulty of constructing.In addition,
The piping lane in section if round, its transiting inside headroom utilization rate is low, high when same headroom requirement is met
Degree will increase, cutting depth increase.Equally, it is above-mentioned same except existing for the underground pipe gallery of common corrugated steel pipe formula
Problem outside, in the case of current piping lane common-use size size, if edge rolling can only be used small into the piping lane of 3~4 meters of diameter
Wave height, small the moment of inertia, such as waveform parameter of small intensity, wave height 50mm, 55mm or 100mm, it is difficult to using wave height up to 140mm and
The waveform parameter of the big the moment of inertias of more than 140mm, deformation will be very big so after piping lane is buried, including the two of setting support
The deformation of individual side wall.
A series of Underground Steel pipe galleries of the applicant's earlier application, steel construction here is steel material composition
Structure, different from above-mentioned concrete rigid structure, but these steel construction piping lane deflections in actual applications are larger, one
Aspect piping lane utilizes the cooperative transformation of the common Force principle of pipeclay, that is, pipeclay cooperative transformation principle, steel construction and backfill
Effect, deflection is naturally just very big；Meanwhile, the deflection that steel structure member is allowed in engineering is bigger than reinforced concrete member
Much.So, the deformation of the pipe gallery corridor body of steel construction will cause the deformation and infringement of piping lane inside pipe support and pipeline.
It would therefore be highly desirable to solve above-mentioned technical barrier.
The content of the invention
Goal of the invention：The invention provides one kind in piping lane easily set support, more hydroelectric lines, body can be accommodated
Stability Analysis of Structures is unlikely to deform, the bowed out box shape steel structure in the section of piping lane splicing is quickly realized using the common Force principle of pipeclay
Urban Underground pipe gallery.
Technical scheme：Underground pipe gallery of the present invention, including by being located at the unit of top and bottom and two sides respectively
Plate is circumferentially assembled to form unit tube coupling, and the unit tube coupling is assembled vertically to form piping lane, and the unit sheet bar is to piping lane
The arc-shaped steel corrugated plating of outside arch camber, its ripple lines is vertical with piping lane axial line, and the inner radius of both sides unit sheet bar are more than
0.5 times of cornerwise length of piping lane, the width of piping lane is more than 0.5 times of its height and less than 2 times of its height；Wherein, it is described
The cornerwise length of piping lane is with the circumferential tie point of adjacent cells plate as measurement point.
Preferably, the inner radius of the both sides unit sheet bar are more than 0.75 times of cornerwise length of piping lane, the width of piping lane
Degree is more than 0.75 times of its height and less than 1.5 times of its height.
The circumferential junction of the adjacent unit sheet bar forms angle, for example, can form obtuse angle structure, or be circular arc
Excessively.
The circumferential connection end of the adjacent unit sheet bar respectively sets longitudinal flange, and adjacent adpting flange forms splicing and connects
Junction.Wherein, longitudinal flange is flat flange, angle steel flange, special-shaped angle steel flange, channel-section steel or deformed channel steel.
Vertical supports vertical rod is arranged at the madial wall of the piping lane, and/or near the top or bottom of the piping lane
The end of arrangement horizontal support cross bar at inner surface, the vertical supports and/or horizontal support is connected to adjacent cells plate
At longitudinal flange.
In the present invention, the radian positioned at top and bottom and the unit sheet bar of two sides is identical or different.Or same list
The radian of first plate is different.Unit sheet bar is made up of metallic plate, and the metallic plate bent upon itself forms projection；Or bent by metallic plate
Form raised, then hollow cavity structure is formed with the combination of protrusions with sheet material or tubing；Or by metallic plate and metal tube splicing
Into；Or fastened by C-type steel, channel-section steel, I-steel, arc-shaped steel, angle steel or corrugated plating and metallic plate and form the knot with hollow cavity
Structure.Further, fill concrete in the hollow cavity, or reinforcing bar is arranged in the hollow cavity and coagulation is filled
Soil.
Beneficial effect：Compared with prior art, the present invention has following remarkable advantage：
(1) box shape steel structure underground pipe gallery of the invention, the inner radius to two side unit sheet bar are limited,
So that the radius of sidewall paneling piece is big, curvature is small, the height of vertical supports is can guarantee that, improves the saturation of the hydroelectric line of support,
Vertical supports can concede intermediate space close proximity to the side wall of piping lane simultaneously, improve piping lane inside headroom utilization rate.
(2) box shape steel structure underground pipe gallery of the invention, the depth-width ratio to piping lane cross section is required, can guarantee that
The height of piping lane, puies forward the ability that High lateral wall pipe support accommodates pipeline, can also control the deflection of piping lane, is allowed to meet norm of steel structure
The requirement of deflection.
(3) the piping lane section is bowed out box piping lane, and corridor body headroom utilization rate is high, and unit sheet bar uses arc knot
Structure, using the common Force principle of pipeclay, integrally-built intensity is maximized with endurance, solves the piping lane of pure square-section
Pipeclay common Force principle can not be utilized when buried, the problems such as structure stress is poor, cost is high.
(4) the box piping lane circumferentially can often be saved using the connection of the flanges such as flat flange, angle steel flange or deformed channel steel
Length can be done to more than 10 meters, integral construction degree of progress speed, when being connected especially with angle steel or channel-section steel flange, corner stress collection
The stressing conditions in middle area are significantly improved, it is to avoid longitudinal flange is with the single form being welded to connect of unit sheet bar in dynamic load
Weld cracking under operating mode and cause pipe structure destroy etc. phenomenon.
(5) in the case where identical headroom utilization rate and loading condition is ensured, the thickness of steel product and section arc length of the piping lane can subtract
It is few, it is cost-effective, it is more beneficial for accelerating the construction speed of job site, bring huge economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is the structural representation of the inside headroom of prior art circle piping lane；
Fig. 2 is the structural representation of the inside headroom of prior art ellipse piping lane；
Fig. 3-7 is respectively the cross-sectional view of underground pipe gallery of the present invention；
Fig. 8-10 is respectively three kinds of cross-sectional views of piping lane.
Specific embodiment
Technical scheme is described further below in conjunction with the accompanying drawings.
Box piping lane 1 of the invention, including by being located at the unit sheet bar 2 of upper and lower and two sides circumferentially assembled shape respectively
Into unit tube coupling, the unit tube coupling is assembled vertically to form box piping lane；Unit sheet bar 2 is the arc to arch camber on the outside of box piping lane
Shape steel corrugated plating, its ripple lines is perpendicular with box piping lane axial line；Wherein, the inner radius of both sides unit sheet bar are more than
0.5 times of cornerwise length of piping lane, 0.5 times of width more than its height of piping lane and 2 times less than its height, piping lane diagonal
Length with the circumferential tie point of adjacent cells plate as measurement point.
(inner radius of both sides unit sheet bar and the width of piping lane are high for external dimensions of the present invention to steel construction pipe gallery
Than) be defined, drawn a conclusion by theoretical calculation and three-dimensional simulation experiment：The aspect ratio range control of single cabin steel construction piping lane
At 0.6-1.8 times, more preferably 0.75-1.5 times, can just there is preferable stress to imitate it is furthermore preferred that wide and height is as far as possible close
Really.Meanwhile, the inner radius of both sides unit sheet bar are more than 0.5 times of cornerwise length of piping lane, can obtain shape infinite approach
The piping lane of rectangle/side arch, the piping lane deflection of the structure is small and uniform force, it is preferred that the inner radius of both sides unit sheet bar
More excellent more than 0.56 times of cornerwise length of piping lane, the inner radius of both sides unit sheet bar are more than 0.75 times of piping lane diagonal
Length.
Wherein, the angle of circumferential connection can be formed between adjacent cells plate, it is as shown in Figure 3 and Figure 6, or round
Arc transition, as shown in Fig. 4,5,7.Wherein, when the unit sheet bar circumferentially splices, the contact end of adjacent cells plate is provided with
Longitudinal flange 3, and adjacent longitudinal flange 3 is splicing joint face, wherein longitudinal flange 3 is flat flange, angle steel flange, abnormal shape
Angle steel flange, channel-section steel or deformed channel steel, can realize quick connection, install convenient, significant increase construction speed by bolt.
In the present invention, the unit sheet bar positioned at upper and lower and two sides has at least one radian respectively, per blade unit plate
The radius on the basis of the maximum radian of radius in the sheet, every piece of radian of plate can be with difference, and four module unit plates can be same
The plate of one radian, can also be that the plate of two kinds, three kinds or four kinds different radians is constituted.Wherein, unit sheet bar is by metallic plate
Constitute, the metallic plate bent upon itself forms projection；Or metallic plate is bent to form convex shape, with sheet material or tubing and the convex sets
Conjunction forms hollow cavity structure；Or be spliced by metallic plate and metal tube；Or by C-type steel, channel-section steel, I-steel, arc-shaped steel,
Angle steel or corrugated plating fasten to be formed with hollow cavity structure with metallic plate.The present invention can fill coagulation in above-mentioned hollow cavity
Soil, or reinforcing bar is arranged in the hollow cavity and concrete is filled.The wave height value of piping lane unit sheet bar of the present invention and
Cross sectional moment of inertia can be very high, it is to avoid piping lane diameter is smaller or during smaller radius of arc transition section, it is difficult to bends to and wants
The problem of radian is sought, so as to also cause that the radian of plate is no longer limited by piping lane bore and span, provides to manufacture
Facility.
Each plate Impact direction is also plate ring direction, sidepiece backfill pair in the angle type of attachment of piping lane of the present invention
The extruding of top board so that the side plate of connection corner portion has the larger component lifted upwards to top board, mitigates suffered by the plate of top
Upper load pressure.The vertical pressure of same top plate so that top board has larger lateral thrust in connection corner offside plate, subtracts
Sidepiece load pressure suffered by light sidepiece plate, it is seen that side plate load and top load, can be mutual under this kind of attachment structure form
Fractional load is offset, so that overall structure is more they tended to rationally.
Piping lane section of the present invention is approximate rectangular box-shaped, and the intensity of piping lane is high, low cost, its piping lane headroom utilization rate
Height, both sides wall bracket is easily set, and support accommodates water power line amount greatly, as shown in dotted portion in Fig. 3-7, near the madial wall of piping lane
Place arranges vertical supports vertical rod 4, it is also possible to horizontal support cross bar is being arranged at the top of the piping lane or bottom interior surface
5, the end of vertical supports 4 and/or horizontal support 5 is connected at the longitudinal flange of adjacent cells plate, while can also be perpendicular
To laying short support 6 on rack rod 4, horizontal support cross bar 5.Wherein unit sheet bar uses the arcuation ripple of arc-shaped structure
Plate, after corridor body soil body backfill, surrounding backfill forms good package action to corridor physical efficiency, in overall structure stress, week
Enclose the soil body and constitute an entirety with Pipe rack, it is overall using the common Force principle of pipeclay because plate is being circumferentially circular arc
The intensity of structure is maximized with endurance.
Embodiment 1
Force analysis is tested：The inner radius dimension limitation of piping lane both sides unit sheet bar
(1) when inner radius are equal to 0.5 times of diagonal, piping lane cross sectional shape is circle；(2) when inner radius are more than
During 0.5 times of diagonal, piping lane cross sectional shape is infinitely close to rectangle；(3) when inner radius are less than 0.5 times of diagonal, piping lane
Cross sectional shape is infinitely close to quincunx；
It is well known that the stress performance of circle is best, but due to underground pipe gallery need necessary clear height and
Clear span is required, and circular cross-section support cannot be laid (have in patent document and compare in detail).Here just circular cross-section is not entered
Row force analysis.To rectangle (Fig. 8), quincunx (Fig. 9) and square arch (Figure 10, this patent under being acted on regard to each soil pressure below
Application shape) these three steel construction piping lanes carry out three-dimensional Force Calculation analysis, as a result referring to table 1.
The rectangle of table 1, quincunx and square arch steel structure piping lane force analysis
Note：Rectangle is located at span centre with the maximum displacement of square arch, and quincuncial maximum displacement is located at longitudinal seam.It is maximum
Stress is respectively positioned on seaming position.
Conclusion：By after three-dimensional finite element analysis, in rectangle, quincunx and square three kinds of structures of arch, the change of square arch
Shape amount minimum and uniform force；Meanwhile, when the inner radius of both sides unit sheet bar are more than the 0.5-0.75 times of cornerwise length of piping lane
When spending, the deflection of square domes be gradually reduced and uniform force improve, more than 0.75 times after domes deflection
The trend that is gradually reduced tend towards stability, its uniform force also tend to stabilization.
Embodiment 2
Force analysis is tested：The ratio of width to height dimension limitation of piping lane
Experimental technique：Using square arch steel structure piping lane, on the premise of arc radius are certain with cornerwise relation, control
The ratio of width to height of corridor body section processed, calculates analyzing three-dimensional stressing conditions, as a result referring to table 2.
Note：Maximum displacement is located at span centre position；Maximum stress is respectively positioned on seaming position；Displacement unit is cm, unit of stress
It is MPa.
Conclusion：On the premise of arc radius are certain with cornerwise relation, the ratio of width to height of square arch corridor body section from
When 0.5-1 changes, dominant bit displacement and maximum stress are gradually reduced；During equal to 1, the displacement of its structure dominant bit and maximum stress are equal
It is minimum；When the ratio of width to height is more than 1, its corresponding maximum displacement and maximum stress also become big, after the ratio of width to height is more than 2, in 100MPa
Its deflection alreadys exceed 2cm under load, the swing caused to portion's suspension and support in corridor body, has had a strong impact on its own structure stress
The laying of performance and subsequent pipeline；So the section height wide of square arch box piping lane should be controlled in 0.5-2, preferably 0.75-
1.5, more preferably 1, now, the stress performance of piping lane is gradually strengthened until optimal.
Claims (10)
1. the bowed out box shape steel structure Urban Underground pipe gallery in a kind of section, including by being located at top and bottom and two sides respectively
Unit sheet bar is circumferentially assembled to form unit tube coupling, and the unit tube coupling is assembled vertically to form piping lane, the unit sheet bar be to
The arc-shaped steel corrugated plating of arch camber on the outside of piping lane, its ripple lines is vertical with piping lane axial line, it is characterised in that：Both sides unit sheet bar
Inner radius be more than 0.5 times of cornerwise length of piping lane, the width of piping lane is more than 0.5 times of its height and is less than its height
2 times；Wherein, the cornerwise length of the piping lane is with the circumferential tie point of adjacent cells plate as measurement point.
2. underground pipe gallery according to claim 1, it is characterised in that：The inner radius of the both sides unit sheet bar are big
In 0.75 times of cornerwise length of piping lane, the width of piping lane is more than 0.75 times of its height and less than 1.75 times of its height.
3. underground pipe gallery according to claim 1, it is characterised in that：The circumferential junction of the adjacent unit sheet bar
Formation angle is arc transition.
4. the Urban Underground pipe gallery according to claim 1 or 3, it is characterised in that：The week of the adjacent unit sheet bar
Longitudinal flange is respectively set to connection end, and adjacent longitudinal flange forms splicing joint face.
5. Urban Underground pipe gallery according to claim 4, it is characterised in that：The longitudinal flange is flat method
Orchid, angle steel flange, special-shaped angle steel flange, channel-section steel or deformed channel steel.
6. Urban Underground pipe gallery according to claim 4, it is characterised in that：The cloth at the madial wall of the piping lane
Vertical supports vertical rod is put, and/or horizontal support cross bar is arranged at the top of the piping lane or bottom interior surface, it is described vertical
The end of support and/or horizontal support is connected at the longitudinal flange of adjacent cells plate.
7. Urban Underground pipe gallery according to claim 1, it is characterised in that：Positioned at described in top and bottom and two sides
The radian of unit sheet bar is identical or different.
8. Urban Underground pipe gallery according to claim 1, it is characterised in that：The radian of the same unit sheet bar is not
Together.
9. Urban Underground pipe gallery according to claim 1, it is characterised in that：The unit sheet bar is by metallic plate structure
Into the metallic plate bent upon itself forms projection；Or projection is bent to form by metallic plate, then with sheet material or tubing and the combination of protrusions
Form hollow cavity structure；Or be spliced by metallic plate and metal tube；Or by C-type steel, channel-section steel, I-steel, arc-shaped steel, angle steel
Or corrugated plating fastens to form the structure with hollow cavity with metallic plate.
10. Urban Underground pipe gallery according to claim 9, it is characterised in that：Filling coagulation in the hollow cavity
Soil, or reinforcing bar and fill concrete are arranged in the hollow cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129345.0A CN106869167A (en) | 2017-03-06 | 2017-03-06 | The bowed out box shape steel structure Urban Underground pipe gallery in section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129345.0A CN106869167A (en) | 2017-03-06 | 2017-03-06 | The bowed out box shape steel structure Urban Underground pipe gallery in section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106869167A true CN106869167A (en) | 2017-06-20 |
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ID=59169614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710129345.0A Pending CN106869167A (en) | 2017-03-06 | 2017-03-06 | The bowed out box shape steel structure Urban Underground pipe gallery in section |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643632A (en) * | 2018-04-23 | 2018-10-12 | 宁波荣山新型材料有限公司 | A kind of lift parking unit of full assembling |
| CN110093948A (en) * | 2019-06-06 | 2019-08-06 | 福州大学 | Variable cross-section Pipe rack and its construction method suitable for rapid construction |
| WO2019153719A1 (en) * | 2018-02-09 | 2019-08-15 | 南京联众建设工程技术有限公司 | Underground comprehensive utility tunnel having multi-compartment structure |
| WO2019153718A1 (en) * | 2018-02-09 | 2019-08-15 | 南京联众建设工程技术有限公司 | Underground comprehensive pipe gallery of multi-chamber structure |
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| JP2010174515A (en) * | 2009-01-29 | 2010-08-12 | Ohbayashi Corp | Underground wall structure and underground structure |
| CN205242441U (en) * | 2015-12-24 | 2016-05-18 | 福建省电力勘测设计院 | Oval contrary shaft of doing of suspension type |
| CN106090450A (en) * | 2016-08-09 | 2016-11-09 | 南京联众建设工程技术有限公司 | There is the box pipeline that circumferential obtuse angle connects |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010174515A (en) * | 2009-01-29 | 2010-08-12 | Ohbayashi Corp | Underground wall structure and underground structure |
| CN205242441U (en) * | 2015-12-24 | 2016-05-18 | 福建省电力勘测设计院 | Oval contrary shaft of doing of suspension type |
| CN106090450A (en) * | 2016-08-09 | 2016-11-09 | 南京联众建设工程技术有限公司 | There is the box pipeline that circumferential obtuse angle connects |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153719A1 (en) * | 2018-02-09 | 2019-08-15 | 南京联众建设工程技术有限公司 | Underground comprehensive utility tunnel having multi-compartment structure |
| WO2019153718A1 (en) * | 2018-02-09 | 2019-08-15 | 南京联众建设工程技术有限公司 | Underground comprehensive pipe gallery of multi-chamber structure |
| CN108643632A (en) * | 2018-04-23 | 2018-10-12 | 宁波荣山新型材料有限公司 | A kind of lift parking unit of full assembling |
| CN108643632B (en) * | 2018-04-23 | 2023-09-19 | 宁波荣山新型材料有限公司 | Fully assembled lifting parking unit |
| CN110093948A (en) * | 2019-06-06 | 2019-08-06 | 福州大学 | Variable cross-section Pipe rack and its construction method suitable for rapid construction |
| CN110093948B (en) * | 2019-06-06 | 2024-06-07 | 福州大学 | Variable-section pipe gallery structure suitable for rapid construction and construction method thereof |
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| CB02 | Change of applicant information | ||
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Address after: 211215 Zhetang Town Industrial Park, Lishui District, Nanjing City, Jiangsu Province Applicant after: Nanjing Lianzhong Engineering Technology Co., Ltd. Address before: 211215 No. 331 Zhening East Road, Zhetang Industrial Concentration Zone, Lishui Economic Development Zone, Nanjing City, Jiangsu Province Applicant before: Nanjing Liantong Construction Engineering Technology Co., Ltd. |
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Application publication date: 20170620 |