CN110629666A - Bridge expansion joint - Google Patents
Bridge expansion joint Download PDFInfo
- Publication number
- CN110629666A CN110629666A CN201911041104.6A CN201911041104A CN110629666A CN 110629666 A CN110629666 A CN 110629666A CN 201911041104 A CN201911041104 A CN 201911041104A CN 110629666 A CN110629666 A CN 110629666A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- section steel
- water stop
- expansion joint
- reduction plate
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 87
- 239000010959 steel Substances 0.000 claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 230000000903 blocking effect Effects 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 239000011358 absorbing material Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- 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
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a bridge expansion joint. Including left shaped steel and right shaped steel, still include the elastic water stop, it has the first board of making an uproar to all lead to be equipped with on left shaped steel and the right shaped steel, it is provided with first through-hole on the first board of making an uproar to fall, the first board of making an uproar that falls of left shaped steel and correspondence encloses into first holding tank, enclose into the second holding tank between the first board of making an uproar that falls of right shaped steel and correspondence, the both ends of elastic water stop block card respectively in first holding tank and second holding tank, all be provided with first block portion on left shaped steel and the right shaped steel, all be provided with second block portion on each first board of making an uproar that falls, it falls the board still all to be fixed with the second on left shaped steel and the right shaped steel, it is provided with the second through-hole on the board to. By adopting the bridge expansion joint, the first noise reduction plate and the second noise reduction plate can effectively absorb noise generated when vehicles pass, reduce the noise and avoid the influence on surrounding residents.
Description
Technical Field
The invention relates to a bridge expansion joint.
Background
The bridge is common basic municipal engineering in market life, and the bridge is mainly used for communicating two sides of a river channel or a canyon, so that the bridge is convenient to pass. Because the flexible phenomenon can appear in the use of bridge, in order to avoid the flexible and destroyed problem of bridge that leads to of bridge, the bridge need set up expansion joint device in the work progress. However, most of the existing expansion joint devices do not have the noise reduction effect, and when a vehicle passes through the expansion joint device, the vehicle can generate large noise, so that residents around a bridge are easily affected.
Disclosure of Invention
The invention provides a bridge expansion joint, which is used for solving the technical problem that a bridge expansion joint device in the prior art does not have a noise reduction effect.
The bridge expansion joint adopts the following technical scheme:
the bridge expansion joint comprises a left section steel and a right section steel which are arranged in a mirror symmetry mode, the sections of the left section steel and the right section steel are both inverted L-shaped, the bridge expansion joint also comprises an elastic water stop belt arranged between the left section steel and the right section steel, a first noise reduction plate is arranged on each of the left section steel and the right section steel in a guiding mode, a first through hole is formed in each first noise reduction plate, each first through hole is an S-shaped channel formed by connecting a plurality of vertical sections and a plurality of horizontal sections in a staggered mode, a first accommodating groove is defined by the left section steel and the corresponding first noise reduction plate, a second accommodating groove is defined by the right section steel and the corresponding first noise reduction plate, two ends of the elastic water stop belt are respectively clamped in the first accommodating groove and the second accommodating groove, a first blocking part used for blocking the upper side of the elastic water stop belt is arranged on each of the left section steel and the right section steel, and a second blocking part, the left side shaped steel and the right side shaped steel are further fixedly provided with a second noise reduction plate, the second noise reduction plate is located above the elastic water stop, a second through hole is formed in the second noise reduction plate, the second noise reduction plate on the left side shaped steel and the second noise reduction plate on the right side shaped steel are arranged in a vertically staggered mode, the first noise reduction plate and the second noise reduction plate are made of sound absorption materials, and elastic air bags are arranged at two ends of the elastic water stop.
Has the advantages that: by adopting the bridge expansion joint, the first noise reduction plate and the second noise reduction plate can effectively absorb noise generated when vehicles pass, so that the noise is reduced, and the influence on surrounding residents is avoided. In addition, the setting of board of making an uproar can also play filterable effect, has avoided directly falling on the elasticity waterstop such as stone, gravel, has avoided falling into more debris on the elasticity waterstop, and makes the gasbag at elasticity waterstop both ends deviate from the condition in first holding tank and the second holding tank.
Further, the elastic water stop is W-shaped.
Furthermore, the elastic water stop is internally provided with a buffer hole.
Furthermore, a plurality of first through holes are arranged on the first noise reduction plate in a matrix shape.
Further, the aperture of each first through hole is between 5mm ~ 15mm, and the distance between any two adjacent first through holes is between 20mm ~ 50 mm.
Furthermore, a plurality of second through holes are arranged on the second noise reduction plate in a matrix shape.
Further, the aperture of each second through hole is between 7mm ~ 20mm, and the distance between any two adjacent second through holes is between 10mm ~ 60 mm.
Further, the one end of the first noise reduction plate is a T-shaped guide rail, and T-shaped guide grooves are formed in the left section steel and the right section steel.
Further, the sound absorbing material is an aluminum sound absorbing material.
Drawings
FIG. 1 is a schematic cross-sectional view of an overall structure of an embodiment of a bridge expansion joint of the present invention;
fig. 2 is a schematic perspective view of a first noise reduction plate according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a second noise reduction plate according to an embodiment of the bridge expansion joint of the present invention.
The reference numerals are explained below:
1-left section steel, 2-right section steel, 3-elastic water stop, 301-buffer hole, 302-elastic air bag, 4-first noise reduction plate, 401-T type guide rail, 402-first through hole, 21-vertical section, 22-horizontal section, 403-second stopping part, 5-second noise reduction plate, 501-second through hole and 6-first stopping part.
Detailed Description
To better illustrate the objects, technical solutions and advantages of the present invention, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The embodiment of the bridge expansion joint of the invention comprises the following steps:
as shown in fig. 1 to 3, the bridge expansion joint comprises a left section steel 1 and a right section steel 2 which are arranged in a mirror symmetry manner, the sections of the left section steel 1 and the right section steel 2 are both inverted L-shaped, the bridge expansion joint further comprises an elastic water stop belt 3 which is arranged between the left section steel 1 and the right section steel 2, the left section steel 1 and the right section steel 2 are both provided with a first noise reduction plate 4 in a guiding manner, the first noise reduction plate 4 is provided with a first through hole 402, the first through hole 402 is an S-shaped channel formed by connecting a plurality of vertical sections 21 and a plurality of horizontal sections 22 in a staggered manner, the left section steel 1 and the corresponding first noise reduction plate 4 enclose a first accommodating groove, the right section steel 2 and the corresponding first noise reduction plate 4 enclose a second accommodating groove, two ends of the elastic water stop belt 3 are respectively clamped in the first accommodating groove and the second accommodating groove, the left section steel 1 and the right section steel 2 are both provided with a first stop part 6 for stopping the upper side of the elastic water stop belt 3, each first stop part 403 for stopping, still all be fixed with the second on left side shaped steel 1 and the right side shaped steel 2 and fall board 5 of making an uproar, the second falls the board 5 of making an uproar and is located the top of elastic water stop 3, the second falls to be provided with second through-hole 501 on the board 5 of making an uproar, the second on the left side shaped steel 1 falls board 5 and the second on the right side shaped steel 2 and falls board 5 crisscross arrangement from top to bottom, the first material of falling board 4 and the second of making an uproar is sound absorbing.
Specifically, in this embodiment, the left section steel 1 and the right section steel 2 are both L-shaped and arranged in mirror symmetry, and since the shape and the structure of the left section steel 1 are the same as those of the right section steel 2, the left section steel 1 is described below by taking the left section steel 1 as an example, the left section steel 1 includes a horizontal flat plate portion which is horizontal and a vertical flat plate portion which is vertical, a T-shaped guide groove is provided on the vertical flat plate portion, a notch of the T-shaped guide groove faces the right side, a first noise reduction plate 4 is assembled on the vertical flat plate portion in a guiding manner, a T-shaped guide rail 401 is provided on one side of the first noise reduction plate 4, and the first noise reduction plate 4 is assembled in a guiding manner by the mutual. In this embodiment, the first noise reduction plate 4 is parallel to the horizontal flat plate portion, and a first accommodating groove is defined between the first noise reduction plate 4, the vertical flat plate portion and the horizontal flat plate portion, and it should be noted that the vertical flat plate portion of the right section steel 2, the horizontal flat plate portion of the right section steel 2 and the first noise reduction plate 4 assembled to the right section steel 2 in a guiding manner define a second accommodating groove. In this embodiment, the left and right ends of the elastic water stop 3 are respectively clamped in the first holding tank and the second holding tank. In order to avoid the situation that the two ends of the elastic water stop band 3 easily fall out of the first accommodating tank and the second accommodating tank, in this embodiment, the first blocking portion 6 is arranged on the horizontal flat plate portion of the left-shaped steel 1, the second blocking portion 403 is arranged on the first noise reduction plate 4, the first blocking portion 6 is a protrusion arranged below the horizontal flat plate portion, the second blocking portion 403 is a protrusion arranged above the first noise reduction plate 4, and the first blocking portion 6 and the second blocking portion 403 can reduce the notch of the first accommodating tank, i.e., realize a necking structure, so that the end portion of the elastic water stop band 3 is clamped and fixed. The horizontal flat plate part, the vertical flat plate part and the first noise reduction plate 4 of the right section steel 2 are the same as the corresponding structures of the left section steel 1, and the corresponding structures of the right section steel 2 are not detailed.
Elastic water stop 3 is the W form in this embodiment, and both ends all are provided with an elastic air bag 302 about elastic water stop 3, and the elastic air bag 302 at both ends about control blocks respectively in first holding tank and second holding tank to the fixing to elastic water stop 3 has been realized. Because the elastic water stop 3 is to be extended or compressed along with the bridge body on both sides, in order to enhance the elasticity of the elastic water stop 3, in this embodiment, a plurality of buffer holes 301 are provided inside the elastic water stop 3, so that the weight of the elastic water stop 3 is reduced, the elasticity of the elastic water stop 3 is also enhanced, and the compression deformation and the extension deformation are enhanced. It should be noted that the buffer holes 301 in this embodiment include rhombic buffer holes with rhombic cross sections and triangular buffer holes with triangular cross sections.
Still all being fixed with a second on left side shaped steel 1 and the right side shaped steel 2 in this embodiment and falling board 5 of making an uproar, the second falls board 5 of making an uproar and is a flat board, and the second falls the material of board 5 of making an uproar and be aluminium sound absorbing material, specifically is aluminium fiberboard. The second on left shaped steel 1 and right shaped steel 2 falls board 5 of making an uproar all is located the top of elastic water stop 3 and staggers from top to bottom the setting, as shown in fig. 1, the second falls the board 5 of making an uproar and fixes on the horizontal flat plate portion of left shaped steel 1 on left shaped steel 1, and the second of right shaped steel 2 falls board 5 of making an uproar and also corresponds and fixes on the horizontal flat plate portion of right shaped steel 2 to the second falls the board 5 of making an uproar and is located the second on right shaped steel 2 and falls the top of board 5 of making an uproar on left shaped. In this embodiment, each second noise reduction plate 5 is provided with a plurality of second through holes 501, the diameter of each second through hole 501 is 10mm, in other embodiments, the diameter of each second through hole 501 may also be 7mm or 20mm, and the distance between any two adjacent second through holes 501 is 20mm, in other embodiments, the distance may also be 10mm or 60 mm. In this embodiment, the second through holes 501 of the second noise reduction plate 5 are arranged in a matrix.
In the embodiment, the first noise reduction plate 4 is provided with a plurality of first through holes 402, the diameter of each first through hole 402 is 10mm, and in other embodiments, the diameter of each first through hole 402 may be 5mm or 15mm, and the distance between any two adjacent first through holes 402 is 30mm, and in other embodiments, the distance may be 20mm or 50 mm. The first through holes 402 are also arranged in a matrix, and each of the first through holes 402 is provided in a region between the T-shaped rail 401 and the second blocking portion 403. In order to achieve better noise reduction effect, the first through hole 402 is configured as an S-shaped curved channel, so that the sound wave entering into the first through hole can be more obstructed, and more energy of the sound wave is consumed, thereby achieving better noise reduction effect. In this embodiment, the first noise reduction plate 4 is also made of an aluminum sound absorption material, specifically, an aluminum powder sintered plate.
The bridge expansion joint of this embodiment is when using, and the first board 4 and the second board 5 of making an uproar can absorb the produced noise of vehicle current to the influence to the resident on every side has been avoided. In addition, the setting of board 5 of making an uproar can also play filterable effect in the second, has avoided the condition that directly falls on elastic water stop 3 such as stone, gravel, has avoided deviating from and wearing and tearing of elastic water stop 3, has prolonged elastic water stop 3's life.
The foregoing embodiments have been described primarily for the purposes of illustrating the general principles, and features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (9)
1. Bridge expansion joint, its characterized in that: the elastic water stop strip comprises a left section steel and a right section steel which are arranged in a mirror symmetry mode, the sections of the left section steel and the right section steel are both inverted L-shaped, the elastic water stop strip is arranged between the left section steel and the right section steel, first noise reduction plates are assembled on the left section steel and the right section steel in a guiding mode, first through holes are formed in the first noise reduction plates, the first through holes are S-shaped channels formed by connecting a plurality of vertical sections and a plurality of horizontal sections in a staggered mode, a first accommodating groove is defined by the left section steel and the corresponding first noise reduction plates, a second accommodating groove is defined by the right section steel and the corresponding first noise reduction plates, two ends of the elastic water stop strip are clamped in the first accommodating groove and the second accommodating groove respectively, first blocking parts used for blocking the upper side of the elastic water stop strip are arranged on the left section steel and the right section steel, and second blocking parts used for blocking the lower side of the elastic water stop, the left side shaped steel and the right side shaped steel are further fixedly provided with a second noise reduction plate, the second noise reduction plate is located above the elastic water stop, a second through hole is formed in the second noise reduction plate, the second noise reduction plate on the left side shaped steel and the second noise reduction plate on the right side shaped steel are arranged in a vertically staggered mode, the first noise reduction plate and the second noise reduction plate are made of sound absorption materials, and elastic air bags are arranged at two ends of the elastic water stop.
2. The bridge expansion joint of claim 1, wherein: the elastic water stop is W-shaped.
3. The bridge expansion joint of claim 2, wherein: the inside of elastic water stop is provided with the buffer hole.
4. The bridge expansion joint of claim 1, wherein: a plurality of first through holes are arranged on the first noise reduction plate in a matrix shape.
5. The bridge expansion joint of claim 4, wherein the aperture of each first through hole is between 5mm ~ 15mm, and the distance between any two adjacent first through holes is between 20mm ~ 50 mm.
6. The bridge expansion joint of claim 1, wherein: and a plurality of second through holes are arranged on the second noise reduction plate in a matrix shape.
7. The bridge expansion joint of claim 6, wherein the aperture of each second through hole is between 7mm ~ 20mm, and the distance between any two adjacent second through holes is between 10mm ~ 60 mm.
8. The bridge expansion joint according to any one of claims 1 ~ 7, wherein one end of the first noise reduction plate is a T-shaped guide rail, and the left section steel and the right section steel are both provided with T-shaped guide grooves.
9. The bridge expansion joint according to any one of claims 1 ~ 7, wherein said sound absorbing material is an aluminum sound absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911041104.6A CN110629666A (en) | 2019-10-30 | 2019-10-30 | Bridge expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911041104.6A CN110629666A (en) | 2019-10-30 | 2019-10-30 | Bridge expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110629666A true CN110629666A (en) | 2019-12-31 |
Family
ID=68978528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911041104.6A Pending CN110629666A (en) | 2019-10-30 | 2019-10-30 | Bridge expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110629666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922060A (en) * | 2022-05-30 | 2022-08-19 | 南京交通职业技术学院 | Bridge expansion joint device and using method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2534063A1 (en) * | 1974-07-30 | 1976-02-12 | Elastometal Ltd | EXPANSION JOINT SEAL |
| DE4026515C1 (en) * | 1990-08-22 | 1992-04-09 | Kober Ag, Glarus, Ch | Expansion joint for roadway - has edging bars and inner bars connected by stretched elastic strip |
| CN201990939U (en) * | 2010-12-27 | 2011-09-28 | 洛阳双瑞特种装备有限公司 | Railway bridge extending and retracting device |
| KR101489877B1 (en) * | 2014-05-15 | 2015-02-06 | 삼우기연 주식회사 | waterspout sealing assembly for drain apparatus installed slab laying gap for pier and constructing method of repairing the same |
| DE202016007085U1 (en) * | 2016-10-28 | 2017-02-08 | DEFLEX-Fugensysteme GmbH | Joint profile assemblies with durable abrasion resistance to cover joints and reliable low-supervision devices to cover the same |
| CN106758798A (en) * | 2016-12-26 | 2017-05-31 | 安徽尚德科技有限公司 | Replaceable bridge extension joint can be pulled and pushed |
| CN206328674U (en) * | 2016-12-19 | 2017-07-14 | 宁波大学 | A kind of noise reduction protection device for bridge expanssion joint |
| CN206495456U (en) * | 2017-01-24 | 2017-09-15 | 湖南峰畅建材有限公司 | A kind of sound-absorbing wear-resisting floor wearing floor suitable for library |
| CN207227945U (en) * | 2016-08-25 | 2018-04-13 | 中铁第四勘察设计院集团有限公司 | Modular expansion device and bridge with pressure-bearing connection |
| CN207878864U (en) * | 2017-12-11 | 2018-09-18 | 深圳市南方鸿达实业有限公司 | A kind of damping absorption floor |
| CN208649880U (en) * | 2018-05-22 | 2019-03-26 | 杭州溯真科技有限公司 | A kind of extrusion item for expansion gap device |
| CN210975524U (en) * | 2019-10-30 | 2020-07-10 | 中国建筑第七工程局有限公司 | Bridge expansion joint |
-
2019
- 2019-10-30 CN CN201911041104.6A patent/CN110629666A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2534063A1 (en) * | 1974-07-30 | 1976-02-12 | Elastometal Ltd | EXPANSION JOINT SEAL |
| DE4026515C1 (en) * | 1990-08-22 | 1992-04-09 | Kober Ag, Glarus, Ch | Expansion joint for roadway - has edging bars and inner bars connected by stretched elastic strip |
| CN201990939U (en) * | 2010-12-27 | 2011-09-28 | 洛阳双瑞特种装备有限公司 | Railway bridge extending and retracting device |
| KR101489877B1 (en) * | 2014-05-15 | 2015-02-06 | 삼우기연 주식회사 | waterspout sealing assembly for drain apparatus installed slab laying gap for pier and constructing method of repairing the same |
| CN207227945U (en) * | 2016-08-25 | 2018-04-13 | 中铁第四勘察设计院集团有限公司 | Modular expansion device and bridge with pressure-bearing connection |
| DE202016007085U1 (en) * | 2016-10-28 | 2017-02-08 | DEFLEX-Fugensysteme GmbH | Joint profile assemblies with durable abrasion resistance to cover joints and reliable low-supervision devices to cover the same |
| CN206328674U (en) * | 2016-12-19 | 2017-07-14 | 宁波大学 | A kind of noise reduction protection device for bridge expanssion joint |
| CN106758798A (en) * | 2016-12-26 | 2017-05-31 | 安徽尚德科技有限公司 | Replaceable bridge extension joint can be pulled and pushed |
| CN206495456U (en) * | 2017-01-24 | 2017-09-15 | 湖南峰畅建材有限公司 | A kind of sound-absorbing wear-resisting floor wearing floor suitable for library |
| CN207878864U (en) * | 2017-12-11 | 2018-09-18 | 深圳市南方鸿达实业有限公司 | A kind of damping absorption floor |
| CN208649880U (en) * | 2018-05-22 | 2019-03-26 | 杭州溯真科技有限公司 | A kind of extrusion item for expansion gap device |
| CN210975524U (en) * | 2019-10-30 | 2020-07-10 | 中国建筑第七工程局有限公司 | Bridge expansion joint |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922060A (en) * | 2022-05-30 | 2022-08-19 | 南京交通职业技术学院 | Bridge expansion joint device and using method thereof |
| CN114922060B (en) * | 2022-05-30 | 2024-05-28 | 南京交通职业技术学院 | Bridge expansion joint device and use method thereof |
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Address after: No.267, 15th Street, Jingkai, Zhengzhou, Henan Province, 450000 Applicant after: CHINA CONSTRUCTION SEVENTH ENGINEERING DIVISION Corp.,Ltd. Address before: 450000 No. 116 Chengdong Road, Jinshui District, Henan, Zhengzhou Applicant before: CHINA CONSTRUCTION SEVENTH ENGINEERING DIVISION Corp.,Ltd. |
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