CN206667063U - Prestressing force bellows altitude calibration system in a kind of bridge construction - Google Patents
Prestressing force bellows altitude calibration system in a kind of bridge construction Download PDFInfo
- Publication number
- CN206667063U CN206667063U CN201720265614.1U CN201720265614U CN206667063U CN 206667063 U CN206667063 U CN 206667063U CN 201720265614 U CN201720265614 U CN 201720265614U CN 206667063 U CN206667063 U CN 206667063U
- Authority
- CN
- China
- Prior art keywords
- bellows
- prestressing force
- bar
- bolt bar
- calibration system
- 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.)
- Expired - Fee Related
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses prestressing force bellows altitude calibration system in a kind of bridge construction, including fixed cross beam, more than two bellows arrangement for adjusting height are distributed with below fixed cross beam, all bellows arrangement for adjusting height carry more than two bellowss jointly, bellows vertical array, tendon is installed with each bellows；The side of bellows is provided with scale, and scale is hung on fixed cross beam, is provided with one group of generating laser in the opposite side of bellows, laser transmitter projects laser changes through the demarcation in bellows arrangement for adjusting height, is projected to scale.When the system is applied to multiple adjusting apparatus carrying prestressing force bellows diverse location, the horizontal level of bellows is calibrated, while the vertical height of prestressing force bellows can also be adjusted according to construction requirement, ensures construction quality of the prestressing force bellows when pouring.
Description
Technical field
Technical field of bridge construction is the utility model is related to, prestressing force bellows height school in especially a kind of bridge construction
Barebone, it is applied particularly to the position correction of bellows in cast-in-situ box girder.
Background technology
Bridge structure durability is to influence bridge structure safe, the key factor in life-span, and the premature deterioration of superstructure is (such as
There is early stage downwarp, the disease such as cracking) and bridge security accident be increasingly becoming the hot issue of people's growing interest.In advance
Stress technique is the important technology for ensureing bridge structure durability, after wherein the quality of bellows and being accurately positioned determines
Pre-stress construction quality.
The prestress system of pre-stressed bridge is the core content of structural bearing, and its construction quality is that prestressed structure is being applied
The most important thing during work.During known science of bridge building construction of cast-in-situ box-beam, prestressing force bellows is needed in reinforcing bar
It is arranged in process of binding, before concreting in the crossbeam of box beam, now needs to be accurately positioned bellows.
The common process of bellows positioning is after framework of steel reinforcement is formed, and bellows is placed on the reinforcing bar being positioned,
And reinforced using U-shaped button muscle, steel stranded wire penetrating adapter then is carried out to it.During lashing, steel strand wires walk disturbance, steel strand wires deadweight
Requirements at the higher level are proposed Deng the quality to electric welding fixation, typically occurs snapping phenomenon, unfavorable shadow is caused to vertical coordinate setting precision
Ring.
A kind of cast-in-situ box girder prestressing force bellows coordinate tunable arrangement disclosed in Application No. 201621069428.2, should
Device is formed frame structure, reinforcing bar is undertaken in frame structure using set screw, nut, pad and the combination of multistory reinforced skeleton
The weight of beam, distance of the tendon apart from box beam cage bar is adjusted using set screw.But in said structure, due to multiple ripples
Tendon weight is inconsistent in pipe, causes bellows bending deformation quantity different, is difficult reality for the distance between adjacent corrugations pipe
Now adjust, be difficult to be applicable for the distribution of non-homogeneous bellows.According to arranging that more than two coordinates adjust on Bellows Length direction
Regulating device, it is also necessary to monitor bellows levelness and altitude location, it is necessary to increase corresponding component on this basis, formed
Positioning vertical to bellows and the calibration system of transverse horizontal.
Utility model content
The technical problems to be solved in the utility model is to provide prestressing force bellows altitude calibration system in a kind of bridge construction
System, when the system is applied to multiple adjusting apparatus carrying prestressing force bellows diverse location, the horizontal level of bellows is calibrated, together
When the vertical height of prestressing force bellows can also be adjusted according to construction requirement, ensure construction of the prestressing force bellows when pouring
Quality.
In order to solve the above technical problems, technical solution adopted in the utility model is：Prestressing force in a kind of bridge construction
Bellows altitude calibration system, it is characterised in that：Including fixed cross beam, more than two ripples are distributed with below fixed cross beam
Pipe arrangement for adjusting height, all bellows arrangement for adjusting height carry more than two bellowss jointly, and the bellows is vertical
Arrangement, tendon is installed with each bellows；The side of bellows is provided with scale, and scale is hung on fixed cross beam, in ripple
The opposite side of line pipe is provided with one group of generating laser, and laser transmitter projects laser is through the demarcation in bellows arrangement for adjusting height
Ring, it is projected to scale.
Such scheme is made it is further preferred, the bellows arrangement for adjusting height include the adjusting screw rod placed vertically with
And the main transverse slat of adjusting screw rod bottom is placed in, adjusting screw rod upper end is fixed on fixed cross beam, and adjusting screw rod bottom passes through main horizontal stroke
In the middle part of plate, and it is connected with the limiting plate of limitation box beam cage bar movement, box beam cage bar is placed in main transverse slat lower surface, adjusting screw rod lower end
Provided with demarcation ring；In the two vertical stay bolt bars that are provided at both ends with of main transverse slat, two stay bolt bar lower ends connect loading plate,
Loading plate and two stay bolt bars form a framework, and the bellows of tendon, hangs below main transverse slat built in the interior carrying of framework
There is two layers of framework connected above by stay bolt bar.
Such scheme is made further preferably, the stay bolt bar is divided into inner bolt bar and outer bolt bar, with layer framework
Using identical stay bolt bar, different stay bolt bars is used between adjacent two layers framework, from top to bottom interior spiral shell on each layer framework
Tightening latch and outer bolt bar are used alternatingly.
Such scheme is made further preferably, on the adjacent two layers framework, on the inner bolt bar and outer bolt bar of use
Nut fixing end or bolt head end, which are located at, to be same as on a loading plate.
Such scheme is made further preferably, the inner bolt bar lower end is nut fixing end, and outer bolt bar upper end is spiral shell
The nut fixing end of female fixing end, inner bolt bar and outer bolt bar is provided with the adjusting nut for being used for adjusting adjacent frame distance.
Make further preferred, reclinate arcuate structure, arcuate structure and ripple in the middle part of the loading plate to such scheme
Line pipe surface contacts, and arcuate structure lowest part suspension demarcation ring, the both ends of loading plate are equipped with two holes along plate length direction,
Wherein inboard aperture coordinates with inner bolt bar, and apertura lateralis coordinates with outer bolt bar.
Such scheme is made further preferably, the limiting plate is anchored on main horizontal stroke by the nut positioned at adjusting screw rod lower end
The lower section of plate, it is box beam cage bar between limiting plate and main transverse slat, limiting plate is provided with the cambered surface with box beam cage bar surface engagement.
Such scheme is made further preferably, the box beam cage bar is two, respectively positioned at adjusting screw rod both sides.
It is using beneficial effect caused by above-mentioned technical proposal：
（1）Coordinate the demarcation ring being fixed on bellows arrangement for adjusting height, transmitting in the system using generating laser
Laser is through demarcating ring to scale, to detect spacing of each prestressing force bellows relative to fixed cross beam, so as to realize in advance should
The measurement and calibration of power bellows level height, occupation mode is easy and effective, applied in construction, it is ensured that ensures prestressing force
Construction quality of the bellows when pouring；
（2）Bellows arrangement for adjusting height in the system is sequentially connected using multistory frame, using length between adjacent frame
Adjustable shank of bolt is spent to fix, prestressing force bellows is carried and short transverse on position adjustment, make its meet design
It is required that ensureing construction quality, efficiency of construction can be greatly improved compared to traditional means；
（3）The parts such as generating laser, scale and demarcation ring in the system are construction common tool, in addition main horizontal stroke
Plate, loading plate and limiting plate can utilize building site leftover pieces to process, and inside and outside shank of bolt and matched nut are standard
Part, it can be purchased from the market, cost is low, and total assembling is easy to use.
Brief description of the drawings
Fig. 1 is structure composition schematic diagram of the present utility model；
Fig. 2 is Fig. 1 left view；
In figure：1st, adjusting screw rod, 2, main transverse slat, 3, box beam cage bar, 4, loading plate, 5, outer bolt bar, 6, inner bolt bar, 7,
Limiting plate, 8, bellows, 9, tendon, 10, fixed cross beam, 11, demarcation ring, 12, scale, 13, generating laser.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
1 understand with reference to the accompanying drawings, the utility model is specifically related to prestressing force bellows altitude calibration system in a kind of bridge construction
System, for the calibration in the horizontal and vertical both direction before being poured to prestressing force bellows, its structure specifically includes fixed horizontal stroke
Beam 10, is distributed with more than two bellows arrangement for adjusting height below fixed cross beam 10, and all bellowss highly adjust dress
Put and carry more than two bellowss 8 jointly, the vertical array of bellows 8, tendon 9 is installed with each bellows 8；Ripple
The side of line pipe 8 is provided with scale 12, and scale 12 is hung on fixed cross beam 10, and one group of laser is provided with the opposite side of bellows 8
Transmitter 13, generating laser 13 launch laser through the demarcation ring 11 in bellows arrangement for adjusting height, are projected to scale 12.
In said structure, when the installation of bellows 8, each of carrying bellows 8 can be detected using the system
The position of bellows arrangement for adjusting height, launches laser by the generating laser 13 of side, demarcates ring 11 when laser passes through, i.e.,
It is believed that bellows 8 is in same plane, it is highly equal, adjacent ripple tube pitch, can be read by scale 12
Number, so as to realize the height demarcation to bellows.Detect it is errorless after, you can the tendon 9 inside the machine of bellows 8 is poured
Build, ensure the pouring quality of building.
In fig 2, bellows arrangement for adjusting height concrete structure includes the adjusting screw rod 1 placed vertically and is placed in tune
The main transverse slat 2 of the bottom of screw rod 1 is saved, adjusting screw rod 1 is long threaded rod, and the upper end of adjusting screw rod 1 is fixed on fixed cross beam 10, regulation
The bottom of screw rod 1 is connected through the main middle part of transverse slat 2, and with the limiting plate 7 that limitation box beam cage bar 3 moves, and box beam cage bar 3 is placed in main horizontal stroke
The lower surface of plate 2, main transverse slat 2 is supported using box beam cage bar 3, and carries framework and bellows positioned at the main lower section of transverse slat 2
8, the lower end of adjusting screw rod 1 is provided with demarcation ring 11, and 11 points of ring of demarcation is welded on adjusting screw rod 1,
In the two vertical stay bolt bars that are provided at both ends with of main transverse slat 2, two stay bolt bar lower ends connect loading plate 4,
Loading plate 4 and two stay bolt bars form a framework, the bellows 8 of tendon 9 built in the interior carrying of framework, under main transverse slat 2
Hang two layers of framework connected above by stay bolt bar in side.In fig 2, it is shown that 4 frameworks, the loading plate of adjacent frame
4 distances, adjusted by stay bolt bar attaching nut, generally adjustment determines bellows 8 apart from not too large according to design requirement
With the spacing between box beam cage bar 3.
In said structure, it is possible to achieve the adjacent spacing any distance of loading plate 4 adjustment, facilitate non-homogeneous bellows distribution side
The constructing operation of formula, it is only necessary to which spanner can be achieved, convenient and swift.
In order to be adjusted respectively the distance each layer framework, according to construction requirement, convenient extension and dismounting, therefore set
Multiple stay bolt bars, i.e., in the structure shown here, stay bolt bar is divided into inner bolt bar 6 and outer bolt bar 5, identical with being used on layer framework
Stay bolt bar, use different stay bolt bars between adjacent two layers framework, from top to bottom inner bolt bar 6 and outer on each layer framework
Shank of bolt 5 is used alternatingly.Furthermore, it desired on adjacent two layers framework, the inner bolt bar 6 of use and the top nut of outer bolt bar 5 are fixed
End or bolt head end are positioned at being same as on a loading plate 4, and particularly the lower end of inner bolt bar 6 is nut fixing end, outer bolt bar 5
Upper end is nut fixing end, and the nut fixing end of inner bolt bar 6 and outer bolt bar 5 is provided with the tune for being used for adjusting adjacent frame distance
Save nut.Workmen can adjust the height of two neighboring framework, convenient construction personnel behaviour in the position of same loading plate 4
Make and adjust.
As shown in Figure 2, the reclinate arcuate structure in the middle part of loading plate 4, arcuate structure contact with the surface of bellows 8,
The both ends of loading plate 4 are equipped with two holes along plate length direction, and wherein inboard aperture coordinates with inner bolt bar 6, apertura lateralis with it is outer
Shank of bolt 5 coordinates.The hole heart between two holes leaves spiral shell away from the cooperation for requiring to be easy to inner bolt bar 6 and outer bolt bar 5 and nut
Female revolution space.
In ripple pipe construction at cast-in-situ box girder crossbeam, general box beam cage bar 3 is two, respectively positioned at 1 liang of adjusting screw rod
Side, the position restriction of box beam cage bar, limiting plate 7 can be fastened by the nut positioned at the lower end of adjusting screw rod 1 using limiting plate 7
It is box beam cage bar 3 between limiting plate 7 and main transverse slat 2 in the lower section of main transverse slat 2, limiting plate 7 is provided with and the table of box beam cage bar 3
The cambered surface that face coordinates.Avoid producing inclination because of both sides force unbalance, under the influence of square bellows position.This limiting plate 7
Positioned at the lower section of box beam cage bar 7, it is not necessary to which spot welding mode is fixed, and is avoided and is deformed because the stress of limiting plate 7 is larger.
Prestressing force bellows altitude calibration system in the bridge construction of the present embodiment, Specific construction process are as follows：
1st, the prestressing force bellows number and coordinate key element in construction drawing, prepare what is matched with 8 numbers of bellows
Loading plate 4, and the stay bolt bar coordinated with loading plate 4；
2nd, main transverse slat 2 is placed in box beam cage bar 3, and main transverse slat 2 and limiting plate 7 is fixed using adjusting screw rod 1, make box beam
Cage bar 3 is fixed with limiting plate 7 and main transverse slat 2；
3rd, for the coordinate position of every layer of bellows, the loading plate 4 of the main lower section of transverse slat 2 is set gradually, and utilizes inner bolt
Bar 6 and outer bolt bar 5 are alternately located by connecting to it；
4th, bellows 8 is placed on loading plate 4, tendon 9 is penetrated in bellows 8, if bellows 8 occurs to bottom
Move, then nut corresponding to adjustment；
5th, launch laser using generating laser 12 corresponding with demarcation ring 11, and adjust inner bolt bar 6 and outer bolt bar 5
Corresponding nut, laser is instructed through demarcation ring 11, while read the numerical value on scale 12, check each laser beam difference with setting
Whether the spacing of bellows 8 of meter is equal；
6th, according to step 5 adjusting nut repeatedly, until meeting design requirement；
7th, concreting is carried out to bellows 8 and tendon 9, concreting is completed, and after final set, is held with spanner dismounting
Support plate 4, reclaimer, is reused.
Above-mentioned construction method is coordinated using generating laser compared with the conventional method, in the system is fixed on bellows height
Demarcation ring in adjusting means, transmitting laser is through demarcating ring to scale, to detect each prestressing force bellows relative to fixed horizontal
The spacing of beam, so as to realize measurement and calibration to prestressing force bellows level height, occupation mode is easy and effective, applied to applying
In work, it is ensured that ensure construction quality of the prestressing force bellows when pouring.Adjusting means in the system can be accurately true
The spacing of fixed every layer of bellows, convenient regulation, while efficiency of construction is improved, save material.
Claims (8)
- A kind of 1. prestressing force bellows altitude calibration system in bridge construction, it is characterised in that：Including fixed cross beam（10）, solid Determine crossbeam（10）More than two bellows arrangement for adjusting height are distributed with lower section, and all bellows arrangement for adjusting height are held jointly Carry more than two bellowss（8）, the bellows（8）Vertical array, in each bellows（8）Inside it is installed with tendon（9）；Ripple Line pipe（8）Side be provided with scale（12）, scale（12）Hang on fixed cross beam（10）On, in bellows（8）Opposite side set There is one group of generating laser（13）, generating laser（13）Launch laser through the demarcation ring in bellows arrangement for adjusting height （11）, it is projected to scale（12）.
- 2. prestressing force bellows altitude calibration system in a kind of bridge construction according to claim 1, it is characterised in that：Institute State the adjusting screw rod that bellows arrangement for adjusting height includes placing vertically（1）And it is placed in adjusting screw rod（1）The main transverse slat of bottom （2）, adjusting screw rod（1）Fixed cross beam is fixed in upper end（10）On, adjusting screw rod（1）Bottom passes through main transverse slat（2）Middle part, and with Limit box beam cage bar（3）Mobile limiting plate（7）Connection, box beam cage bar（3）It is placed in main transverse slat（2）Lower surface, adjusting screw rod（1） Lower end is provided with demarcation ring（11）；In main transverse slat（2）Be provided at both ends with two vertical stay bolt bars, two stay bolt bar lower ends Connect loading plate（4）, loading plate（4）A framework, tendon built in the interior carrying of framework are formed with two stay bolt bars（9）Ripple Line pipe（8）, in main transverse slat（2）Hang two layers of framework connected above by stay bolt bar in lower section.
- 3. prestressing force bellows altitude calibration system in a kind of bridge construction according to claim 2, it is characterised in that：Institute State stay bolt bar and be divided into inner bolt bar（6）With outer bolt bar（5）, with using identical stay bolt bar, adjacent two layers on layer framework Different stay bolt bars is used between framework, from top to bottom inner bolt bar on each layer framework（6）With outer bolt bar（5）Alternating makes With.
- 4. prestressing force bellows altitude calibration system in a kind of bridge construction according to claim 3, it is characterised in that：Institute State on adjacent two layers framework, the inner bolt bar of use（6）With outer bolt bar（5）Top nut fixing end or bolt head end, which are located at, to be same as One loading plate（4）On.
- 5. prestressing force bellows altitude calibration system in a kind of bridge construction according to claim 4, it is characterised in that：Institute State inner bolt bar（6）Lower end is nut fixing end, outer bolt bar（5）Upper end is nut fixing end, inner bolt bar（6）And outer bolt Bar（5）Nut fixing end be provided with and be used to adjust the adjusting nut of adjacent frame distance.
- 6. prestressing force bellows altitude calibration system, its feature in a kind of bridge construction according to claim 3 or 4 or 5 It is：The loading plate（4）The reclinate arcuate structure in middle part, arcuate structure and bellows（8）Surface contacts, arcuate structure Lowest part suspension demarcation ring（11）, loading plate（4）Both ends be equipped with two holes along plate length direction, wherein inboard aperture with it is interior Shank of bolt（6）Coordinate, apertura lateralis and outer bolt bar（5）Coordinate.
- 7. prestressing force bellows altitude calibration system in a kind of bridge construction according to claim 2, it is characterised in that：Institute State limiting plate（7）By positioned at adjusting screw rod（1）The nut of lower end is anchored on main transverse slat（2）Lower section, in limiting plate（7）And master Transverse slat（2）Between be box beam cage bar（3）, limiting plate（7）It is provided with and box beam cage bar（3）The cambered surface of surface engagement.
- 8. prestressing force bellows altitude calibration system in a kind of bridge construction according to claim 7, it is characterised in that：Institute State box beam cage bar（3）For two, respectively positioned at adjusting screw rod（1）Both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720265614.1U CN206667063U (en) | 2017-03-19 | 2017-03-19 | Prestressing force bellows altitude calibration system in a kind of bridge construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720265614.1U CN206667063U (en) | 2017-03-19 | 2017-03-19 | Prestressing force bellows altitude calibration system in a kind of bridge construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206667063U true CN206667063U (en) | 2017-11-24 |
Family
ID=60377963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720265614.1U Expired - Fee Related CN206667063U (en) | 2017-03-19 | 2017-03-19 | Prestressing force bellows altitude calibration system in a kind of bridge construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206667063U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186415A (en) * | 2018-09-14 | 2019-01-11 | 北京城建十六建筑工程有限责任公司 | A kind of prestress pipe installation scale and its quick application method |
| CN109488027A (en) * | 2018-11-23 | 2019-03-19 | 中国五冶集团有限公司 | A kind of pipeline precise positioning structure |
| CN112012509A (en) * | 2020-08-20 | 2020-12-01 | 中国十七冶集团有限公司 | Adjustable and accurate positioning corrugated pipe device and installation method |
| CN112525049A (en) * | 2020-11-21 | 2021-03-19 | 蓝海建设集团有限公司 | Corrugated pipe positioning detection device and detection method thereof |
-
2017
- 2017-03-19 CN CN201720265614.1U patent/CN206667063U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186415A (en) * | 2018-09-14 | 2019-01-11 | 北京城建十六建筑工程有限责任公司 | A kind of prestress pipe installation scale and its quick application method |
| CN109488027A (en) * | 2018-11-23 | 2019-03-19 | 中国五冶集团有限公司 | A kind of pipeline precise positioning structure |
| CN109488027B (en) * | 2018-11-23 | 2023-10-13 | 中国五冶集团有限公司 | Accurate positioning structure of pipeline |
| CN112012509A (en) * | 2020-08-20 | 2020-12-01 | 中国十七冶集团有限公司 | Adjustable and accurate positioning corrugated pipe device and installation method |
| CN112012509B (en) * | 2020-08-20 | 2022-03-22 | 中国十七冶集团有限公司 | Adjustable and accurate positioning corrugated pipe device and installation method |
| CN112525049A (en) * | 2020-11-21 | 2021-03-19 | 蓝海建设集团有限公司 | Corrugated pipe positioning detection device and detection method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206667063U (en) | Prestressing force bellows altitude calibration system in a kind of bridge construction | |
| CN107090932B (en) | Construction method of large-span thin-wall plane arch truss based on stiff ring beam | |
| CN105649325B (en) | The adjustable tripod support system of assembly concrete shear wall structure and method | |
| CN109763569B (en) | Construction method of cantilever awning | |
| CN102733545A (en) | Section steel column for high-rise building section steel concrete combination structure, and construction method thereof | |
| CN205975382U (en) | Adjustable device of cast -in -situ box girder prestressing force bellows coordinate | |
| CN206752316U (en) | Bellows height regulating frame at a kind of cast-in-situ box girder crossbeam | |
| CN115467421B (en) | Hoisting construction method for complex large-span steel roof | |
| CN111719705A (en) | Large-span net rack jacking construction process | |
| CN111561175B (en) | Prestress underpinning static force cutting and column pulling construction process | |
| CN113293694A (en) | Rollover frame structure for efficient pier body construction and construction process | |
| CN110778116B (en) | Construction method of complex curved surface giant concrete beam tube structure | |
| CN111456422A (en) | Belt supporting device and method for conical steel truss on top of sliding-form silo of squat silo wall | |
| CN110409624A (en) | A kind of installation of large scale equipment and main structure be inverse to be made to calculate and construction method | |
| CN107326812B (en) | Installation and positioning structure for No. 1 plate in No. 0 block of corrugated steel web bridge and operation method | |
| CN106351246B (en) | The integral sleeve installation method of T-bolt diameter≤48mm | |
| CN111927111B (en) | Construction method of ultrahigh special-shaped outer frame steel structure | |
| CN113073678A (en) | Construction method for embedded bolt sleeve of upper structure of turbine generator base | |
| CN111075173B (en) | Assembled concrete supporting system and construction method thereof | |
| CN210152320U (en) | Bolt ball node type net rack jig frame | |
| CN206174235U (en) | Steel bar truss's building carrier plate | |
| CN220666928U (en) | Cylindrical template reinforcing system for special position | |
| CN215407528U (en) | Combined high-voltage wire protection frame | |
| CN218405065U (en) | Vertical prestress wire installation positioner of continuous rigid frame bridge segment construction | |
| CN215714678U (en) | Combined bridge deck cast-in-situ door type support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20190319 |