CN112609603A - Fast-assembled enhanced square culvert structure and construction method - Google Patents
Fast-assembled enhanced square culvert structure and construction method Download PDFInfo
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- 238000005728 strengthening Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 21
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- 238000010008 shearing Methods 0.000 description 6
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
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Abstract
The utility model provides a fast enhancement mode square culvert structure and construction method of assembling, relate to the box culvert field, including the section of jurisdiction, the section of jurisdiction includes support piece and the reinforcement of corrugated plate structure, support piece and reinforcement stack, the wave crest of the trough laminating support piece of reinforcement forms the line contact, support piece and reinforcement buckle jointly and form kink and sharp portion in the first direction, both ends parallel and level in support piece and the reinforcement first direction, connect the flange joint jointly, support piece is equallyd divide along the both ends of second direction and do not is connected with the flange of assembling, the reinforcement is located between two flanges of assembling, form the section of jurisdiction through support piece and reinforcement cooperation flange, form prefabricated box culvert assembly standard, the section of jurisdiction itself has additional strengthening, when satisfying the intensity promotion demand, the assembly precision has been improved, the field work volume has been reduced.
Description
Technical Field
The disclosure relates to the field of box culverts, in particular to a fast-assembled enhanced square culvert structure and a construction method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The box culvert is a culvert built by reinforced concrete box pipe joints, consists of one or more square or rectangular sections, is generally made of reinforced concrete or masonry, and is slow in construction process; the corrugated steel box culvert is a flexible structure, and the soil body and the corrugated steel can bear upper load together through the interaction of the corrugated steel and the soil body, so that the bearing capacity of the corrugated steel box culvert is improved. Compared with the traditional concrete structure, the steel plate box culvert has two obvious advantages. Firstly, the corrugated steel plate box culvert has certain deformation adaptability and can be used for the condition of soft soil foundation. Secondly, the steel plate box culvert construction has the characteristics of short construction period, convenient construction, low manufacturing cost, environmental friendliness and the like.
The inventor finds that when the load bearing capacity of the common corrugated steel square culvert is insufficient, the corrugated steel square culvert needs to be reinforced. After reinforcing measures of the ribbed plates are taken for the corrugated steel square culvert, the ribbed plates and the main body need to be assembled on site, so that the field workload is increased, and the aim of quick assembly cannot be fulfilled; and though the mode through range upon range of corrugated steel plate can promote the intensity of square culvert, nevertheless can lead to corrugated steel plate's whole overweight to encroach on structure inner space, occupy construction space, be difficult to satisfy the demand of current square culvert inside usable space.
Disclosure of Invention
The utility model aims at the defects in the prior art, and provides a fast-assembling enhanced square culvert structure and construction method, forms the section of jurisdiction through support piece and reinforcement cooperation flange, forms prefabricated box culvert assembly standard component, and the section of jurisdiction itself has additional strengthening, when satisfying the intensity promotion demand, has improved the assembly precision, has reduced the field work volume.
The first purpose of this disclosure is to provide a reinforced square culvert structure of assembling fast, adopts following technical scheme:
the pipe piece comprises a pipe piece, wherein the pipe piece comprises a supporting piece and a reinforcing piece which are of a corrugated plate structure, the supporting piece and the reinforcing piece are stacked, the wave trough of the reinforcing piece is attached to the wave crest of the supporting piece to form line contact, the supporting piece and the reinforcing piece are jointly bent in a first direction to form a bent part and a straight line part, two ends of the supporting piece and two ends of the reinforcing piece in the first direction are flush, the supporting piece and the reinforcing piece are jointly connected with a butt flange, two ends of the supporting piece in a second direction are respectively connected with an assembling flange;
wherein, first direction is along buckled plate trough extending direction, and the second direction is the direction that buckled plate trough, crest distribute in proper order in turn.
Furthermore, the trajectory of the bent portion is 1/4 circular arc, the trajectory of the straight portion is a straight line, one end of the straight line is in butt joint with the bent portion, and the trajectory of the straight line is tangent to the trajectory of the bent portion.
Furthermore, the two ends of the supporting piece are respectively connected with a butt flange, and the same ends of the supporting piece and the reinforcing piece are connected with the same butt flange.
Furthermore, the assembly flanges are distributed along the extending direction of the wave troughs of the supporting pieces, two ends of each assembly flange are respectively connected with the butt flanges, and the two butt flanges and the two assembly flanges jointly form a continuous closed butt structure.
Furthermore, the butt flange at one end of the support is provided with a shearing resistant part with an axis distributed along the first direction, and the butt flange at the other end of the support is provided with a butt joint part used for matching the shearing resistant part.
Furthermore, the straight line where the shearing resistant pieces and the axis of the butt joint part are located is located between the wave crests of the reinforcing pieces and the wave troughs of the supporting pieces to form reinforcing channels, and the shearing resistant pieces connected with the butt joint flanges are distributed in a one-to-one correspondence mode with the reinforcing channels.
Furthermore, four segments are sequentially connected end to form a closed annular structure with a round-corner rectangular cross section, the butt flange corresponding to the straight line part is connected with the butt flange corresponding to the other segment bending part adjacent to the butt flange, and the splicing flanges are sequentially distributed to form a closed annular splicing structure.
Further, the reinforcement is located outside the closed loop structure and the support is located inside the closed loop structure.
Further, a plurality of closed ring structures are sequentially butted in the axial direction through the assembling flanges.
A second object of the present disclosure is to provide a construction method of a rapidly assembled reinforced square culvert structure as described above, including the following steps:
the four duct pieces are sequentially connected end to end, the butt flange corresponding to the straight line part is connected with the butt flange corresponding to the bent part of the other duct piece adjacent to the straight line part, and the splicing flanges are sequentially distributed to form a closed annular splicing structure to form a closed annular structure with a round-corner rectangular cross section;
a plurality of closed ring structures are sequentially butted along the axial direction through assembling flanges, and adjacent closed ring structures are assembled in staggered joints to form an enhanced square culvert.
Compared with the prior art, the utility model has the advantages and positive effects that:
(1) the pipe piece is formed by matching the supporting piece and the reinforcing piece with the flange, so that the prefabricated box culvert assembly standard piece is formed, and the pipe piece has a reinforcing structure, so that the strength improvement requirement is met, the assembly precision is improved, and the field workload is reduced; by the method for assembling the standard component by prefabricating the corrugated steel square culvert in a factory, the error caused by field construction can be reduced, and the structure machining precision is improved. The assembly standard component is simple to assemble, and can be quickly assembled on a construction site, so that the site construction time is further shortened, and the aim of quickly assembling is fulfilled;
(2) the reinforced square culvert which is assembled quickly is adopted as an underground flexible structure, compared with the traditional concrete box culvert, the reinforced square culvert can well adapt to foundation settlement, and has the advantages of strong bearing capacity, convenience and quickness in construction and environmental friendliness;
(3) the corrugated steel reinforcing piece is arranged on the outer side of the square culvert structural support piece, can reinforce the arc bending arch shoulder part and other parts at the weak position, enhances the section bending rigidity of the arch shoulder part of the square culvert, and is favorable for reducing the stress level and deformation of the arch shoulder part;
(4) the reinforcing part is arranged outside the supporting part, so that the inner space of the structure is not occupied, and the downwarping deformation of the arch top under the action of load and the stress level of the arch shoulder can be reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Fig. 1 is a schematic diagram of the assembly of pipe sheets in embodiments 1 and 2 of the present disclosure;
fig. 2 is a schematic structural view of a box culvert formed by assembling ring segments in embodiments 1 and 2 of the present disclosure;
fig. 3 is a schematic structural diagram of a segment in embodiments 1 and 2 of the present disclosure;
FIG. 4 is a schematic structural diagram of a gasket in the butt joint of the tube sheets in the embodiments 1 and 2 of the present disclosure;
fig. 5 is a schematic view of the assembling direction of the tube sheets in embodiments 1 and 2 of the present disclosure.
In the figure, 1, a support member, 2, a reinforcing member, 3, a butt flange, 4, a splicing flange, 5, a shear reinforcement, 201, a wave crest, 202 and a wave trough.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present disclosure.
As introduced in the background art, after reinforcing measures of the ribbed plates are taken for the corrugated steel square culvert in the prior art, the ribbed plates and the main body need to be assembled on site, so that the field workload is increased, and the aim of quick assembly cannot be fulfilled; in order to solve the problems, the disclosure provides a fast-assembled enhanced square culvert structure and a construction method.
Example 1
In a typical embodiment of the present disclosure, as shown in fig. 1 to 5, a fast-assembling reinforced square culvert structure is proposed.
The square culvert structure is formed by splicing box culvert segments, and the box culvert segments mainly comprise supporting pieces 1, reinforcing pieces 2, butt flanges 3, splicing flanges 4 and shear-resistant reinforcing devices 5; in this implementation, the box culvert formed by splicing the segments is a square box culvert structure, namely a square culvert.
The cross-sectional shape of the target square culvert channel corresponds to that of the support piece, the support piece is used as a main body structure, the reinforcing piece arranged on the outer side of the support piece forms a reinforcing structure, and the reinforcing structure is connected with the main body structure through the connecting piece.
The supporting piece and the reinforcing piece are stacked, the wave trough 202 of the reinforcing piece is attached to the wave crest 201 of the supporting piece to form line contact, the supporting piece and the reinforcing piece are jointly bent in a first direction to form a bent part and a straight part, two ends of the supporting piece and two ends of the reinforcing piece in the first direction are flush and are jointly connected with the butt flange, two ends of the supporting piece in a second direction are respectively connected with the splicing flanges, and the reinforcing piece is located between the two splicing flanges; the reinforcing part is arranged at the middle position, so that the middle weak position of the supporting part is reinforced, the using amount of corrugated plates is reduced, the self weight is reduced, and the purpose of light weight is achieved;
wherein, first direction is along buckled plate trough extending direction, and the second direction is the direction that buckled plate trough, crest distribute in proper order in turn.
The support piece is the buckled plate and buckles the L type structure that 90 degrees formed according to certain radius, and support piece both ends straightway length varies, and the outside cooperation has the reinforcement, and on same flange joint was connected to reinforcement and support piece, flange joint was equipped with the reinforcing ware that shears to constitute stable bearing structure.
The duct piece forms the standard part through the combination of support piece and reinforcement to set up docking flange and assemble the flange at its concatenation position in advance, form the assembly standard part that the specification is unanimous, constitute the target square culvert by the assembly standard part that the specification is the same, each assembly standard part can both prefabricate in the mill, carry out the simple assembly at the job site can, form the assembled structure, further shorten engineering time.
For the connection of the supporting piece and the reinforcing piece, two ends of the supporting piece are respectively connected with a butt flange, and the same ends of the supporting piece and the reinforcing piece are connected with the same butt flange; for the connection, a welded connection may be employed;
the wave troughs of the reinforcing pieces are connected with the wave crests of the corrugated plates of the supporting pieces through connecting pieces, namely, the connecting pieces are arranged at the line contact positions of the wave troughs of the reinforcing pieces and the wave crests of the corrugated plates of the supporting pieces for connection; for example, screw or bolt structures are arranged at intervals along the contact positions of the two structures, so that the stable connection of the two structures is realized.
The extending direction of the wave crest of the reinforcing part and the extending direction of the wave crest of the corrugated plate of the supporting part are arranged in a coplanar manner; the wave troughs of the reinforcing parts are tightly attached to the wave crests of the supporting parts and are connected through the connecting parts, and the connecting parts are not limited to bolt connection.
By adopting the matching of the wave crests and the wave troughs, the stress positions can be well corresponded, and the good transmission of the stress of the device under the cooperative stress is ensured.
The trajectory of the bending part is 1/4 circular arc, the trajectory of the straight line part is straight line, one end of the straight line part is butted with the bending part, and the trajectory of the straight line part is tangent with the trajectory of the bending part.
The other end of the bent part far away from the straight part can be butted with another straight part, the corresponding track lines of the two straight parts are vertical to each other, the bent part is used as a transition part from one straight part to the other straight part, and the lengths of the two straight parts in the first length direction are not equal;
it can be understood that the support piece in the assembly standard component can be formed by splicing one or more corrugated plates in sequence, and when the support piece is formed by splicing a plurality of corrugated plates, the turning part is ensured to be completely positioned on the same corrugated plate so as to ensure the strength of the arc-shaped bending part, and the bending curves of different corrugated steel plates at the turning part are kept consistent.
In actual course of working, support piece, reinforcement all can adopt integrative ripple plate structure, buckle 90 jointly and form the assembly standard component, the extending direction of reinforcement crest and the crest extending direction coplane setting of support piece buckled plate, the trough of reinforcement and the crest of support piece can be laminated together.
The splicing flanges are distributed along the extending direction of the wave trough of the supporting piece, two ends of each splicing flange are respectively connected with the docking flanges, and the two docking flanges and the two splicing flanges jointly form a continuous closed docking structure;
the assembling flange and the butt flange can be stressed together, the stress of the assembling flange and the butt flange can be dispersed to the annular connecting piece from the radial direction, the annular stress can be supported by the flange distributed in the axial direction in an auxiliary mode, and the strength of the duct piece is further improved.
In order to facilitate the butt joint of the duct pieces, the butt joint flange at one end of the support piece is provided with a shear-resistant piece of which the axis is distributed along the first direction, and the butt joint flange at the other end of the support piece is provided with a butt joint part for matching the shear-resistant piece;
the straight line where the shearing resistant pieces and the axis of the butt joint part are located is located between the wave crests of the reinforcing pieces and the wave troughs of the supporting pieces to form reinforcing channels, and the shearing resistant pieces connected with the butt joint flanges are distributed in a one-to-one correspondence mode with the reinforcing channels.
The shear resistant piece is a shear resistant reinforcing device 5 which can be a solid steel pipe and is arranged on the butt flange to assist in bearing the radial shear force of the butt flange, and the shear resistant piece is matched with the flange connecting piece to jointly improve the stability of the ring piece.
The reinforcing part is positioned on the outer side of the supporting part, so that on one hand, the inner space of the structure is not occupied, and on the other hand, the downwarping deformation of the arch top under the action of load and the stress level of the arch shoulder can be reduced;
the buckled plate is corrugated steel plate, has the intensity that satisfies the demand, compares with traditional concrete square culvert as a underground flexible structure, and adaptation ground that can be fine subsides.
The pipe piece is formed by matching the supporting piece and the reinforcing piece with the flange, so that the prefabricated box culvert assembly standard piece is formed, and the pipe piece has a reinforcing structure, so that the strength improvement requirement is met, the assembly precision is improved, and the field workload is reduced;
by the method for assembling the standard component by prefabricating the corrugated steel square culvert in a factory, the error caused by field construction can be reduced, and the structure machining precision is improved. The assembly standard component is simple to assemble, rapid assembly can be realized on a construction site, the site construction time is further shortened, and the purpose of rapid assembly is achieved.
The ring pieces are formed by taking the same rapidly-assembled enhanced square culvert structure as an assembly standard part, four pipe pieces are sequentially connected end to form a closed annular structure with a round-corner rectangular section, a butt flange corresponding to a straight line part is connected with a butt flange corresponding to a bending part of another pipe piece adjacent to the butt flange, and the butt flanges are sequentially distributed to form a closed annular assembled structure;
the reinforcement is located outside the closed loop structure and the support is located inside the closed loop structure.
The pipe pieces are connected through the flanges, and when the pipe pieces are connected, the sealing gasket is arranged between the two flanges to ensure that the structure has good sealing performance and waterproofness.
In this embodiment, there are two arrangements of the duct piece assembling standard pieces, which are divided into an a-ring connection and a B-ring connection, as shown in fig. 1 and 5, respectively;
the difference between the a-ring connection and the B-ring connection is the placement of the assembly standards. In actual engineering, the connection of the rings A or B can be uniformly adopted, and the two arrangement modes can be alternately used, so that staggered joint assembly is realized, and the strength is improved.
No matter the A ring connection or the B ring connection, the assembly standard parts are sequentially arranged along the circumferential direction of a required square culvert channel, the butt flange at the long end of one assembly standard part is connected with the butt flange at the short end of the other assembly part, and a sealing gasket is arranged in the middle of the flange connection.
Only 4 standard components are assembled in the annular direction to form the square culvert. And the channels of the required square culvert are axially connected and lengthened through the assembling flanges of the assembling standard parts.
The reinforcing member can be strengthened to the support piece hoop after the structure assembly is accomplished, and this kind of additional strengthening not only does not invade the inner space who occupies the structure, has strengthened the bending stiffness of corrugated steel square culvert moreover, has improved the structural stress performance, reduces the stress level of hunch shoulder position and the deformation at vault position.
Example 2
In another embodiment of the present disclosure, as shown in fig. 1 to 5, a construction method of a reinforced square culvert structure assembled quickly as in example 1 is provided.
By utilizing the closed annular structure, the closed annular structure is sequentially butted along the axial direction through the assembling flanges, and the butting surfaces are connected through the connecting piece.
The method comprises the following steps:
the four duct pieces are sequentially connected end to end, the butt flange corresponding to the straight line part is connected with the butt flange corresponding to the bent part of the other duct piece adjacent to the straight line part, and the splicing flanges are sequentially distributed to form a closed annular splicing structure to form a closed annular structure with a round-corner rectangular cross section;
a plurality of closed ring structures are sequentially butted along the axial direction through assembling flanges, and adjacent closed ring structures are assembled in staggered joints to form an enhanced square culvert.
Specifically, the assembling process comprises the following steps:
the pipe pieces are sequentially arranged along the circumferential direction of a required square culvert channel, the butt flange at the long end of one pipe piece is connected with the butt flange at the short end of the other pipe piece, and only 4 pipe pieces are needed in the circumferential direction to form a ring piece;
the connecting of ring piece is carried out through the flange of assembling of section of jurisdiction in required side culvert passageway axial, and when flange joint, be equipped with sealed the pad between two flanges to ensure that the junction possesses good leakproofness.
The reinforced square culvert which is assembled quickly is adopted as an underground flexible structure, and compared with the traditional concrete box culvert, the reinforced square culvert can well adapt to foundation settlement; through the connecting piece cooperation between reinforcement and the support piece, assemble at the job site, have that bearing capacity is strong, construction convenience is swift, seals the advantage of good, green.
The assembly precision can be improved, the field workload is reduced, the field assembly time is shortened, and the rapid assembly is realized. In addition, compare in the corrugated steel square culvert of tradition assembling at the job site through the square culvert that assembles the standard component, its quality can obtain further assurance.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (10)
1. A fast-assembled enhanced square culvert structure is characterized by comprising a duct piece, wherein the duct piece comprises a supporting piece and a reinforcing piece which are of a corrugated plate structure, the supporting piece and the reinforcing piece are stacked, the wave trough of the reinforcing piece is attached to the wave crest of the supporting piece to form line contact, the supporting piece and the reinforcing piece are jointly bent in a first direction to form a bent part and a straight part, two ends of the supporting piece and two ends of the reinforcing piece in the first direction are flush and level, the supporting piece and the reinforcing piece are jointly connected with butt flanges, two ends of the supporting piece in a second direction are respectively connected with assembling flanges, and the reinforcing piece is located;
wherein, first direction is along buckled plate trough extending direction, and the second direction is the direction that buckled plate trough, crest distribute in proper order in turn.
2. The reinforced square culvert structure of claim 1, wherein the curved portion has a trajectory of 1/4 circular arc, the straight portion has a straight trajectory, one end of the straight trajectory is connected to the curved portion, and the trajectory is tangent to the curved portion.
3. The reinforced square culvert structure of claim 1, wherein the two ends of the supporting member are connected with a butt flange respectively, and the same end of the supporting member and the same end of the reinforcing member are connected with the same butt flange.
4. The fast-assembling reinforced square culvert structure of claim 3, wherein the assembling flanges are distributed along the extending direction of the wave trough of the supporting member, the two ends of the assembling flanges are respectively connected with the butt flanges, and the two butt flanges and the two assembling flanges jointly form a continuous closed butt structure.
5. The fast-splicing reinforced square culvert structure according to claim 1, wherein shear members having axes distributed along a first direction are installed on the docking flange at one end of the support member, and the docking flange at the other end of the support member is provided with a docking portion for fitting the shear members.
6. The fast-splicing reinforced square culvert structure according to claim 5, wherein the straight line of the shear members and the axial line of the butt joint part is positioned between the wave crests of the reinforcing members and the wave troughs of the supporting members to form reinforcing channels, and the shear members connected with the butt joint flanges are distributed in a one-to-one correspondence manner with the reinforcing channels.
7. The reinforced square culvert structure for rapid assembly according to claim 1, wherein four segments are sequentially connected end to form a closed annular structure with a rectangular section with rounded corners, the butt flange corresponding to the straight line part is connected with the butt flange corresponding to the bending part of another segment adjacent to the butt flange, and the assembly flanges are sequentially distributed to form a closed annular assembly structure.
8. A rapid-makeup reinforced square culvert structure according to claim 7, wherein the reinforcing members are located on the outside of the closed loop structure and the support members are located on the inside of the closed loop structure.
9. A rapid-erection reinforced square culvert structure as claimed in claim 8, wherein a plurality of closed ring structures are axially butted in sequence by erection flanges.
10. A construction method of a fast-assembling reinforced square culvert structure as claimed in any one of claims 1-9, comprising the steps of:
the four duct pieces are sequentially connected end to end, the butt flange corresponding to the straight line part is connected with the butt flange corresponding to the bent part of the other duct piece adjacent to the straight line part, and the splicing flanges are sequentially distributed to form a closed annular splicing structure to form a closed annular structure with a round-corner rectangular cross section;
a plurality of closed ring structures are sequentially butted along the axial direction through assembling flanges, and adjacent closed ring structures are assembled in staggered joints to form an enhanced square culvert.
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| KR200466770Y1 (en) * | 2013-02-28 | 2013-05-13 | (주) 렉스틸 | Arched Type Underground Structure |
| CN106120582A (en) * | 2016-08-19 | 2016-11-16 | 河北驰特轨道交通设备有限公司 | A kind of dome-shaped pin-connected panel double-wall corrugated Guan Bi steel corrugated culvert pipe |
| CN207160068U (en) * | 2017-09-12 | 2018-03-30 | 衡水益通管业股份有限公司 | A kind of disjunctor corrugated steel piping lane |
| CN108677769A (en) * | 2018-05-03 | 2018-10-19 | 衡水奇佳工程材料有限公司 | A kind of bilayer corrugated plating assembly arch culvert structure |
| CN109252458A (en) * | 2018-10-31 | 2019-01-22 | 重庆市排水有限公司 | Box culvert emergency drainage construction method |
| CN210712591U (en) * | 2019-05-13 | 2020-06-09 | 衡水益通管业股份有限公司 | Corrugated steel connecting structure |
| CN110056124A (en) * | 2019-05-31 | 2019-07-26 | 衡水益通管业股份有限公司 | Flanged joint corrugated plating |
| CN110872846A (en) * | 2019-11-18 | 2020-03-10 | 龙彬 | Assembled steel corrugated comprehensive pipe gallery |
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Address after: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Applicant after: Shandong transportation planning and Design Institute Group Co.,Ltd. Applicant after: Beijing Jiaotong University Applicant after: HENGSHUI YITONG PIPE INDUSTRY Co.,Ltd. Address before: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Applicant before: Shandong transportation planning and Design Institute Co.,Ltd. Applicant before: Beijing Jiaotong University Applicant before: HENGSHUI YITONG PIPE INDUSTRY Co.,Ltd. |
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Application publication date: 20210406 |