CN107326807B - A kind of construction technology of frame core-tube system - Google Patents
A kind of construction technology of frame core-tube system Download PDFInfo
- Publication number
- CN107326807B CN107326807B CN201710570209.5A CN201710570209A CN107326807B CN 107326807 B CN107326807 B CN 107326807B CN 201710570209 A CN201710570209 A CN 201710570209A CN 107326807 B CN107326807 B CN 107326807B
- Authority
- CN
- China
- Prior art keywords
- frame core
- tube system
- rubber
- bottom plate
- end bay
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000005516 engineering process Methods 0.000 title claims description 11
- 239000004567 concrete Substances 0.000 claims abstract description 29
- 229920001971 elastomer Polymers 0.000 claims description 79
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000004587 polysulfide sealant Substances 0.000 claims description 7
- 230000011218 segmentation Effects 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- YACLQRRMGMJLJV-UHFFFAOYSA-N Chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 26
- 238000001764 infiltration Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 239000003566 sealing material Substances 0.000 abstract description 4
- 230000003014 reinforcing Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000001809 detectable Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 206010063493 Premature ageing Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
Abstract
The invention discloses a kind of construction technologies of frame core-tube system, it is related to science of bridge building field, include the following steps: to include successively building concrete bed course and several independent frame core-tube system steps being built on concrete cushion, the building step of independent frame core-tube system includes building bottom plate, build the end bay of bottom plate two sides, it builds the top plate above end bay and is laid with highway subgrade above top plate, then Water stop structure mainly is buried in the side of bottom plate, Water stop structure of the invention has the sealing material band of five different structures, the sealing material band of five different structures can prevent the water body infiltration in building gap, improve the water-stagnating effect between adjacent independent frame core-tube system, achieve the purpose that avoid the water supply of frame core-tube system face.
Description
Technical field
The present invention relates to science of bridge building field, in particular to a kind of construction technology of frame core-tube system.
Background technique
Frame core-tube system is the railway and highway cross-over bridge worn under a kind of highway, and main structure is box frame.This structure
Major advantage be structured to entirety, rigidity is big, base stress is small, is relatively specific for the poor place of ground, and can be preferably
The infiltration for preventing the surface water and underground water.
Currently, the frame core-tube system is mostly segmented building, and there are building joint, undergrounds between the frame core-tube system of segmentation building
Water is easy to permeate from lower to upper from the building joint, causes frame core-tube system surface gathered water, for roadbed in effectively control frame core-tube system
Infiltration situation needs to carry out water-proofing treatment to the frame structure of frame core-tube system.
There are many existing waterproof type for bridge, and buried steel in one piece is buried predominantly between two neighboring frame core-tube system
Side rubber fastening band, rubber watertight strip are with composite members composed by telescopic rubber and galvanized steel strip, steel side rubber
Waterstop is compressed or is stretched between deformed concrete crack mainly by intermediate rubber segments, and plays the role of hermetic seal.Generally
For, the adhesion strength of concrete and rubber is poor, in conventional construction, and because rubber is soft elastomer, concrete is made to exist
It is not easy to be drawn reality when pouring, therefore is expanded in concrete joint, can often occur rubber fastening band when avulsing, reversing and loosen and take off
It falls, so that leakage phenomenon can be generated in the higher situation of head pressure.It is therefore single by the way of rubber watertight strip,
Water-stagnating effect is bad.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of construction technologies of frame core-tube system, pass through the five of setting
A waterstop is filled between the building joint of adjacent independent frame core-tube system, then improves stopping between adjacent independent frame core-tube system
Water effect.
To achieve the above object, the present invention provides the following technical scheme that a kind of construction technology of frame core-tube system, including successively
Building concrete bed course and several independent frame core-tube system steps are built on concrete cushion, the building step packet of independent frame core-tube system
It includes bottom plate, the end bay of bottom plate two sides, the top plate above end bay and is laid with highway subgrade above top plate；Wherein in bottom plate and side
Across when, rubber watertight strip a part is embedded in bottom plate and end bay along bottom plate and end bay edge, and reserved tapping side
Another part of rubber fastening band, when building the bottom plate and end bay of adjacent independent frame core-tube system, by reserved tapping side rubber water-proof
Another part of band is built together, further includes following steps: in the outside of bottom plate, end bay and top plate, vulcanization has polysulfide sealant
Layer；Back sticking type rubber fastening band a part is embedded in the bottom of bottom plate and the outside of end bay along bottom plate and end bay edge, and
Reserve another part of back sticking type rubber fastening band；Vulcanize a part of water-swellable rubber in the outside of polysulfide sealant layer again
Glue, a part of filleting rubber tube and a part of embedded rubber fastening band reserve another part, embedding of hydro-expansive rubber
Stitch another part of rubber tube and another part of embedded rubber fastening band；Finally at the bottom for building adjacent independent frame core-tube system
When plate and end bay, another part of another part of back sticking type rubber fastening band, hydro-expansive rubber and embedded will be reserved
Another part of rubber fastening band is built together.
Through the above technical solutions, back sticking type rubber fastening band is the high resiliency using rubber, generated under various loads
Flexible deformation is effectively prevented building joint between the bottom plate and end bay of adjacent independent frame core-tube system to play robust sealed
Infiltration；Hydro-expansive rubber generates 2-3 times of dilatancy after meeting water, and is full of the irregular surface of building joint, simultaneously
Huge contact pressure is generated, achievees the effect that prevent leakage；Filleting rubber tube be hollow structure, using rubber high resiliency and
The characteristics of compressive deformation, generates flexible deformation under various load, to play effective robust sealed, prevents the leakage of architectural construction
The top of bottom plate is arranged in water, infiltration and cushioning buffer effect, embedded rubber fastening band, is also a kind of water sealing structure, is
Prevent the last line of defense of infiltration；Rubber watertight strip is with multiple composed by telescopic rubber and galvanized steel strip simultaneously
Component, rubber watertight strip is compressed or is stretched between deformed concrete crack mainly by intermediate rubber segments, and plays sealing
Sealing effect, therefore the present invention improves the infiltration between independent frame core-tube system by five Water stop structures being arranged.
The present invention is further, and the filleting rubber tube is neoprene pipe.
Through the above technical solutions, neoprene pipe uses advanced waterproof idea, it is widely used in construction joint, deformation joint
The construction of bridge expanssion joint, have the characteristics that it is detectable, can slip casting repairing waterstop；It is anti-that the product is applicable to all undergrounds
Water, discharge structure engineering construction in, such as checkdam, reservoir, subway tunnel, basement, in bury groutable waterstop
Maximum feature be exactly it is detectable, can slip casting repair.
The present invention is further, and in having poured supporting steel plate outside the bottom plate, supporting steel plate supports the water-swellable rubber
Glue.
Through the above technical solutions, with certain weight, and being adopted since hydro-expansive rubber is solid rubber structure
It is supported with supporting steel plate, can be avoided its position and decline, and then do not influence the effect of sealing.
The present invention is further, is wrapped with nylon in the hydro-expansive rubber.
Through the above technical solutions, being not that will do it adjacent independent frame core-tube system at once due to after having built bottom plate
Building, thus in order to avoid hydro-expansive rubber is exposed to the sun and aging, then influence its expansion character, thus using nylon wrap up into
Row protection.
The present invention is further, and region of banketing, the both ends setting in the region of banketing are provided between independent frame core-tube system
Concrete enclosing region.
Through the above technical solutions, medium design is left and right vehicle since vehicle driving is in the left and right sides of frame core-tube system
The dividing strip in road, and use banket landfill and as region of banketing, the usage amount using concrete can be saved, reduced
Cost；And it is provided with concrete enclosing region at the both ends in the region of banketing of single independent frame core-tube system, reach and keeps soil
Effect.
The present invention is further, and the end bay of independent frame core-tube system is segmented building from the bottom to top, and is provided between adjacent two sections
Vertical galvanized sheet waterstop.
Through the above technical solutions, end bay is in segmentation casting process, construction easy to form between upper and lower adjacent two sections
Seam then causes a small amount of water body to permeate, and vertical galvanized sheet waterstop is provided between adjacent two sections, is stopped by galvanized sheet
Water band filling up in construction joint, and then reach and avoid infiltration phenomenon.
The frame core-tube system that the present invention is prepared has Water stop structure, waterstop master between two neighboring independent frame core-tube system
It to be made of the sealing material band of five different structures, the sealing material band of five different structures can prevent in building gap
Water body infiltration, improves the water-stagnating effect between adjacent independent frame core-tube system, achievees the purpose that avoid the water supply of frame core-tube system face；In addition,
The present invention has been disposed vertically one piece of galvanized sheet waterstop when pouring side plate lower section, by galvanized sheet waterstop in construction joint
In fill up, and then reach also avoid end bay position seep water the phenomenon that.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of two independent frame core-tube systems in the present embodiment；
Fig. 2 is the portion the I enlarged drawing of Fig. 1, for showing Water stop structure；
Fig. 3 is that independent frame core-tube system removes the structural schematic diagram after top plate；
Fig. 4 is the portion the II enlarged drawing of Fig. 3, for showing Water stop structure and galvanized sheet waterstop.
Appended drawing reference: 1, independent frame core-tube system；11, bottom plate；12, end bay；13, top plate；2, Water stop structure；21, back sticking type
Rubber fastening band；22, hydro-expansive rubber；23, rubber watertight strip；24, filleting rubber tube；25, embedded rubber water-proof
Band；3, it bankets region；4, closed area；5, galvanized sheet waterstop；6, supporting steel plate；7, single side self waterproof roll；8, polysulfide
Sealant layer.
Specific embodiment
A kind of construction technology of frame core-tube system includes the following steps: to build reinforcing bar in building foundation pit first, connect referring to Fig. 1
Casting concrete to form concrete cushion, layer based on concrete cushion so that reinforcing the lower junction of independent frame core-tube system
Structure；Then one layer of single side self waterproof roll 7 is laid on concrete cushion, due to needing successively to build on concrete cushion top
Build several independent frame core-tube systems 1, therefore at the position that do not construct, single side self waterproof roll 7 can to concrete cushion into
Row protection.
Referring to figure 1 and figure 2, need to build two independent frame core-tube systems 1 along its length in the top of concrete cushion
(two pieces of independent frame core-tube systems 1 in two independent frame core-tube systems 1 side by side are shown in Fig. 1), every independent frame core-tube system 1 is used as a direction
Porte-cochere, each independent frame core-tube system 1 include bottom plate 11, be arranged in 11 two sides of bottom plate end bay 12 and building in end bay
The top plate 13 on 12 tops, independent frame core-tube system 1 all after the completion of construction, are carried out on the both sides of two independent frame core-tube systems 1 using soil
Side slope backfill processing, is finally equipped with the highway subgrade perpendicular to lower section vehicle heading in the top of top plate 13.
Since multiple independent frame core-tube systems 1 on an independent frame core-tube system 1 are built one by one, in two neighboring independence
There will be building joint between frame core-tube system 1, building joint be easy to cause water body to be penetrated on the road surface of frame core-tube system from above, then
Seeping phenomenon is caused, in order to avoid the generation of this situation, the present embodiment is provided with Water stop structure 2 in adjacent independent frame core-tube system 1,
It includes five waterstops, setting specific as follows: referring to fig. 2 with 4, is built on concrete cushion first for pouring bottom plate 11
Reinforcing bar mould bases and place back sticking type rubber fastening band 21, back sticking type rubber fastening band 21 be arranged in bottom, directly with list
Face adhesive waterproof coil 7 contacts.21 half of back sticking type rubber fastening band is exposed outside reinforcing bar mould bases, then pours into reinforcing bar mould bases
Bottom plate 11 is built, after bottom plate 11 pours certain altitude, then above the part backplane 11 rubber watertight strip 23 is put into, equally puts
Enter half, then pours upwards again；Rubber watertight strip 23 be in buried rubber watertight strip 23, be among it rubber section
The both sides of section, rubber section are steel plate section, and wherein the steel plate of side is embedded in bottom plate 11, and the steel plate of the other side is exposed the bottom of at
11 side of plate, removes template after the completion of building.Then vulcanize a strata sulphur sealant layer 8 in the outside of bottom plate 11,
Vulcanize to close to upper edge, the embedded rubber fastening band 25 of a part is vulcanized in polysulfide sealant layer 8, i.e., poly-
Between 11 outside of sulphur sealant layer 8 and bottom plate.Equally also vulcanization has polysulfide sealant layer 8 for 12 inside of end bay and 13 outside of top plate；
Similarly, embedded rubber fastening band 25, in buried rubber watertight strip 23 and back sticking type rubber fastening band 21 be also half pre-buried
In end bay 12, semi-nudity is exposed at outside.
After installing 21 two waterstops of buried rubber watertight strip 23 and back sticking type rubber fastening band, then exist
Vulcanize a hydro-expansive rubber 22 between two waterstops, and be supported by supporting steel plate 6 below, is supported
Steel plate 6 is embedded in advance in 11 basis of bottom plate, in order to prevent the premature aging of hydro-expansive rubber 22, can be swollen in chance water in advance
One layer of nylon is wrapped up outside swollen rubber 22.
Region 3 of banketing has been reserved among two independent frame core-tube systems 1, while concrete is set at the both ends in region 3 of banketing
Closed area 4(is also reinforced concrete structure), and constructed when banketing 3 fill construction of region firstly the need of by end bay 12
At it is that segmentation pours that end bay 12 is the concrete side plate of two sides in the vertical direction, since segmentation building be easy to cause top
Building joint is formed between lower part, leads to the situation that there is end bay 12 to seep water, in order to effectively avoid the hair of this situation
Raw, the present embodiment has been disposed vertically one piece of galvanized sheet waterstop 5(referring to fig. 4 when pouring side plate lower section), by zinc-plated
The filling up in construction joint of plate waterstop 5, and then reach and avoid infiltration phenomenon.
After the completion of the side plate building of end bay 12, then in the top of end bay 12 top plate 13 is poured, then in concrete enclosing area
Domain 4 carries out casting concrete, then carries out fill construction in the region 3 of banketing that concrete enclosing region 4 and end bay 12 are formed
Step, region 3 of banketing separate two independent frame core-tube systems 1, can vehicle by the independent frame core-tube system 1 of side as a direction
Travel road, the independent frame core-tube system 1 of the other side is with the vehicle driving road as another direction；And use banket landfill and by its
As region 3 of banketing, the usage amount using concrete can be saved, is reduced costs.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of construction technology of frame core-tube system, including successively building concrete bed course and built on concrete cushion it is several solely
Vertical frame core-tube system step, the building step of independent frame core-tube system (1) includes end bay (12), the end bay of bottom plate (11), bottom plate (11) two sides
(12) top plate (13) above and the laying highway subgrade above top plate (13)；Wherein in bottom plate (11) and end bay (12),
Rubber watertight strip (23) a part is embedded in bottom plate (11) and end bay (12) along bottom plate (11) and end bay (12) edge
It is interior, and another part of rubber watertight strip (23) is reserved, on bottom plate (11) and the side for building adjacent independent frame core-tube system (1)
When across (12), the another part for reserving rubber watertight strip (23) is built together, which is characterized in that further include walking as follows
Rapid: in the outside of bottom plate (11), end bay (12) and top plate (13), vulcanization has polysulfide sealant layer (8)；By back sticking type rubber water-proof
Band (21) a part is embedded in the bottom of bottom plate (11) and the outside of end bay (12) along bottom plate (11) and end bay (12) edge, and
Reserve another part of back sticking type rubber fastening band (21)；Vulcanize a part of water-swellable in the outside of polysulfide sealant layer again
Rubber (22), a part of filleting rubber tube (24) and a part of embedded rubber fastening band (25), reserve water-swellable rubber
Another part of another part of glue (22), another part of filleting rubber tube (24) and embedded rubber fastening band (25)；
Finally at bottom plate (11) and end bay (12) for building adjacent independent frame core-tube system (1), back sticking type rubber fastening band will be reserved
(21) another part of another part of another part, hydro-expansive rubber (22) and embedded rubber fastening band (25) is together
Building.
2. a kind of construction technology of frame core-tube system according to claim 1, which is characterized in that the filleting rubber tube (24) is
Neoprene pipe.
3. a kind of construction technology of frame core-tube system according to claim 2, which is characterized in that poured in outside the bottom plate (11)
Have supporting steel plate (6), supporting steel plate (6) supports the hydro-expansive rubber (22).
4. a kind of construction technology of frame core-tube system according to claim 3, which is characterized in that in the hydro-expansive rubber
(22) it is wrapped with nylon.
5. a kind of construction technology of frame core-tube system according to claim 4, which is characterized in that between independent frame core-tube system (1)
It is provided with region of banketing (3), concrete enclosing region (4) are arranged in the both ends of the region of banketing (3).
6. a kind of construction technology of frame core-tube system according to claim 4, which is characterized in that the end bay of independent frame core-tube system (1)
(12) segmentation is built from the bottom to top, and vertical galvanized sheet waterstop (5) is provided between adjacent two sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710570209.5A CN107326807B (en) | 2017-07-13 | 2017-07-13 | A kind of construction technology of frame core-tube system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710570209.5A CN107326807B (en) | 2017-07-13 | 2017-07-13 | A kind of construction technology of frame core-tube system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107326807A CN107326807A (en) | 2017-11-07 |
| CN107326807B true CN107326807B (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710570209.5A Expired - Fee Related CN107326807B (en) | 2017-07-13 | 2017-07-13 | A kind of construction technology of frame core-tube system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107326807B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468744B (en) * | 2019-08-26 | 2020-12-22 | 北京奥科瑞检测技术开发有限公司 | Channel bridge reinforcement construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090092209A (en) * | 2008-09-09 | 2009-08-31 | 고삼석 | A expansion joint apparatus for bridge structure |
| JP4406577B2 (en) * | 2004-04-01 | 2010-01-27 | 株式会社技研製作所 | Digging road |
| CN202830735U (en) * | 2012-10-16 | 2013-03-27 | 沈阳铁道勘察设计院有限公司 | Novel jacking frame bridge |
| CN203295954U (en) * | 2013-05-28 | 2013-11-20 | 中铁上海设计院集团有限公司 | Multi-hole separated type frame bridge arrangement structure |
| CN103628406A (en) * | 2012-08-21 | 2014-03-12 | 中铁十局集团有限公司 | Waterproof processing construction method for framework bridge butt-connecting part |
| CN103741607A (en) * | 2014-01-02 | 2014-04-23 | 中铁工程设计咨询集团有限公司 | Method for reinforcing railway frame-shaped bridge and reinforced railway frame-shaped bridge |
| CN203583343U (en) * | 2013-09-27 | 2014-05-07 | 中铁工程设计咨询集团有限公司 | Support type frame bridge |
| CN204959581U (en) * | 2015-08-10 | 2016-01-13 | 吉林铁道勘察设计院有限公司 | Top is advanced cantilever type frame and is constructed bridge |
-
2017
- 2017-07-13 CN CN201710570209.5A patent/CN107326807B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4406577B2 (en) * | 2004-04-01 | 2010-01-27 | 株式会社技研製作所 | Digging road |
| KR20090092209A (en) * | 2008-09-09 | 2009-08-31 | 고삼석 | A expansion joint apparatus for bridge structure |
| CN103628406A (en) * | 2012-08-21 | 2014-03-12 | 中铁十局集团有限公司 | Waterproof processing construction method for framework bridge butt-connecting part |
| CN202830735U (en) * | 2012-10-16 | 2013-03-27 | 沈阳铁道勘察设计院有限公司 | Novel jacking frame bridge |
| CN203295954U (en) * | 2013-05-28 | 2013-11-20 | 中铁上海设计院集团有限公司 | Multi-hole separated type frame bridge arrangement structure |
| CN203583343U (en) * | 2013-09-27 | 2014-05-07 | 中铁工程设计咨询集团有限公司 | Support type frame bridge |
| CN103741607A (en) * | 2014-01-02 | 2014-04-23 | 中铁工程设计咨询集团有限公司 | Method for reinforcing railway frame-shaped bridge and reinforced railway frame-shaped bridge |
| CN204959581U (en) * | 2015-08-10 | 2016-01-13 | 吉林铁道勘察设计院有限公司 | Top is advanced cantilever type frame and is constructed bridge |
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| Publication number | Publication date |
|---|---|
| CN107326807A (en) | 2017-11-07 |
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