CN212294367U - Assembled steel pipe support for cast-in-situ beam construction - Google Patents
Assembled steel pipe support for cast-in-situ beam construction Download PDFInfo
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- CN212294367U CN212294367U CN202020569501.2U CN202020569501U CN212294367U CN 212294367 U CN212294367 U CN 212294367U CN 202020569501 U CN202020569501 U CN 202020569501U CN 212294367 U CN212294367 U CN 212294367U
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- sliding
- steel pipe
- supporting
- upright post
- wedge
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000011065 in-situ storage Methods 0.000 title description 2
- 238000009826 distribution Methods 0.000 claims abstract description 38
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000004567 concrete Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000004080 punching Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
An assembly type steel pipe support for cast-in-place beam construction comprises a steel bar, a steel pipe frame and two guide rails which are paved on the ground, wherein the steel bar penetrates through a pier; the steel pipe frame comprises a plurality of sliding stand columns, a plurality of supporting stand columns, a plurality of first cross beams, a plurality of second cross beams and a plurality of inclined struts, and the plurality of sliding stand columns are respectively connected with the two guide rails in a sliding manner; the supporting upright posts are positioned between the sliding upright posts, the bottom ends of the supporting upright posts are provided with supporting plates, and the supporting plates are supported on the steel bar in a sliding manner through connecting pieces; the top ends of the sliding upright post and the supporting upright post are respectively provided with a height adjusting device, and the height adjusting devices are provided with distribution beams; the tops of the sliding upright post and the supporting upright post are respectively provided with a first gusset plate, and the bottoms of the sliding upright post and the supporting upright post are respectively provided with a second gusset plate; adjacent first gusset plate has first crossbeam through bolted connection, and adjacent second gusset plate has the second crossbeam through bolted connection, and the bracing passes through two adjacent first gusset plates of bolted connection and second gusset plate, and it can improve cast-in-place roof beam's efficiency of construction.
Description
Technical Field
The utility model relates to a building field, concretely relates to assembled steel pipe support for construction of cast-in-place roof beam.
Background
The cast-in-place beam construction by the support method is generally suitable for reinforced concrete and prestressed concrete beam (slab) bridges and rigid frame bridges, and is characterized in that a support is erected on a bridge site, concrete is poured on the support, and after the concrete reaches the strength, a template and the support are removed. In the prior art, a cast-in-place beam construction support usually adopts an unfinished support, namely a traditional method of a support hanger and a common method in the field of bridge construction all the time, and the method is still used in a large amount in the current construction site. Non-finished supports, i.e. produced supports, are not complete but only rough-machined steel, and traditionally, secondary machining, such as shearing, welding, punching and the like, is required on the site, and finally, installation is performed. The process such as cutting off welding can cause the error when installing, leads to when actual construction, often can see that the lead screw of traditional gallows is crooked, and some even bending degree is very big, and this will cause the potential safety hazard. Secondly, the requirements for welding the supporting and hanging bracket on the spot are very strict, most construction sites can not meet the requirements, and the stress strength of the supporting and hanging bracket is also influenced. Moreover, a large amount of manpower, material resources and construction time are consumed for the non-finished bracket, and low engineering efficiency is caused.
The finished bracket, namely the bracket produced by the finished bracket, is a complete product, can be directly installed and used on a construction site without welding or punching, and needs to be simply cut under some conditions. The finished bracket has undoubted advantages in both construction efficiency and appearance effect.
Disclosure of Invention
The utility model discloses aim at solving one of the above-mentioned problem that exists at least, provide an assembled steel pipe support for cast-in-place roof beam construction, it can improve the efficiency of construction of cast-in-place roof beam.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
an assembly type steel pipe support for cast-in-place beam construction comprises a steel bar, a steel pipe frame and two guide rails, wherein the steel bar is used for penetrating through a pier, the two guide rails are arranged oppositely in parallel, and the guide rails are laid on the ground; the steel pipe frame comprises a plurality of sliding stand columns, a plurality of supporting stand columns, a plurality of first cross beams, a plurality of second cross beams and a plurality of inclined struts, the sliding stand columns are arranged in parallel at intervals, and the bottom ends of the sliding stand columns are respectively connected with the two guide rails in a sliding mode; the supporting columns are parallel to the sliding columns, the supporting columns are positioned between two adjacent sliding columns, a supporting plate is arranged at the bottom end of each supporting column, and the supporting plates are slidably supported on the steel bar through connecting pieces; the top end of each sliding upright column and the top end of each supporting upright column are respectively provided with a height adjusting device, and the height adjusting devices are provided with distribution beams; the top of each sliding upright post and the top of each supporting upright post are respectively provided with a first gusset plate, and the bottom of each sliding upright post and the bottom of each supporting upright post are respectively provided with a second gusset plate; two adjacent first gusset plates are detachably connected with a first cross beam through bolts, two adjacent second gusset plates are detachably connected with a second cross beam through bolts, and an inclined strut is detachably connected with two adjacent first gusset plates and the second gusset plates through bolts and is located between the first cross beam and the second cross beam.
Furthermore, the height adjusting device comprises a first wedge-shaped block, a second wedge-shaped block, an adjusting screw rod and two locking nuts, wherein the inclined surface of the first wedge-shaped block is in sliding contact with the inclined surface of the second wedge-shaped block; the first wedge-shaped block and the second wedge-shaped block are both sleeved on the adjusting screw rod in a sliding manner through the kidney-shaped hole; two lock nuts are in threaded connection with the adjusting screw, one lock nut is located on one side, back to the second wedge, of the first wedge, the other lock nut is located on one side, back to the first wedge, of the second wedge, the first wedge is placed at the top end of the corresponding supporting upright column or the corresponding sliding upright column, and the distribution beam is placed on the top surface of the second wedge.
Furthermore, the bottom of each supporting plate is connected with two connecting pieces, and the two connecting pieces are respectively and slidably supported at the two opposite ends of the steel bar.
Furthermore, each connecting piece comprises two I-beams arranged side by side, the upper flange plate of each I-beam is connected with the supporting plate, and the lower flange plate of each I-beam is slidably supported on the steel bar.
Further, the distribution beam comprises a transverse distribution beam and a longitudinal distribution beam, the transverse distribution beam is arranged on the height adjusting device, and the longitudinal distribution beam is arranged on the transverse distribution beam and is perpendicular to the transverse distribution beam.
Further, wood boards are laid on the top surfaces of the longitudinal distribution beams.
Further, the top of support post with the top parallel and level of slip stand, the length of support post is less than the length of slip stand.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
1. when the assembly type steel pipe support for the cast-in-place beam construction is used, the guide rails are only laid on the ground, then the sliding stand columns, the supporting stand columns, the first cross beams, the second cross beams and the inclined struts are connected through the bolts, installation can be completed, welding or punching is not needed at a construction site, and the construction efficiency of the cast-in-place beam is improved. Meanwhile, the sliding upright post is connected with the guide rail on the ground in a sliding mode, a concrete foundation does not need to be arranged at the bottom end of the sliding upright post, and construction efficiency can be further improved. The supporting column bottom is connected with the backup pad, and the backup pad passes through the connecting piece and slides and support on the rod iron of pier, can provide a supporting force for the assembled steel pipe support through the rod iron on the pier, avoids first crossbeam, the bending of second crossbeam, improves the stress strength of assembled steel pipe support for this assembled steel pipe support can be used for the construction of long span bridge.
2. This assembled steel pipe support makes things convenient for the dismouting, does benefit to the transportation, and the reuse rate of support steel can reach 95%.
3. Above-mentioned assembled steel pipe support for cast-in-place roof beam construction is connected through first crossbeam, second crossbeam and bracing between slip stand and the support post for the overall stability of support can promote, and then is favorable to improving construction safety.
Drawings
Fig. 1 is a schematic front view of an assembled steel pipe support according to a preferred embodiment of the present invention.
Fig. 2 is a left side view of the fabricated steel pipe bracket of fig. 1 with the distributor beam removed.
Description of the main elements
100. An assembled steel pipe support; 11. a steel bar; 2. a steel pipe frame; 21. sliding the upright post; 22. supporting the upright post; 231. a support plate; 235. a connecting member; 236. i-shaped steel; 24. a first cross member; 25. a second cross member; 26. bracing; 4. a guide rail; 41. a guide groove; 6. a height adjustment device; 61. a first wedge block; 62. a second wedge block; 65. adjusting the screw rod; 67. locking the nut; 7. a distribution beam; 71. a transverse distribution beam; 73. a longitudinal distribution beam; 75. a wood board; 81. a first gusset plate; 83. a second gusset plate; 200. provided is a bridge pier.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides an assembled steel pipe bracket 100 for cast-in-place beam construction, which includes a steel bar 11, a steel pipe frame 2 and two guide rails 4.
The guide rails 4 are used for being laid on the ground, the two guide rails 4 are arranged oppositely in parallel and are respectively located on two opposite sides of the pier 200 along the transverse bridge direction, and each guide rail 4 extends along the longitudinal bridge direction. The top surface of each guide rail 4 is concavely provided with a guide groove 41. The steel bar 11 is used for penetrating through the pier 200, when the pier 200 is built, a PVC pipe can be pre-buried in the pier 200, and then the steel bar 11 penetrates through the PVC pipe along the transverse bridge direction, or when the pier 200 is built, the steel bar 11 is directly pre-buried on the pier 200. The steel pipe frame 2 includes a plurality of sliding columns 21, a plurality of supporting columns 22, a plurality of first cross beams 24, a plurality of second cross beams 25, and a plurality of diagonal braces 26.
In the present embodiment, the steel pipe frame 2 has a substantially cubic shape. The plurality of sliding upright posts 21 are arranged in parallel at intervals, and the bottom ends of the plurality of sliding upright posts 21 are respectively connected with the two guide rails 4 in a sliding manner. In the present embodiment, the number of the sliding columns 21 is four, and the four sliding columns 21 are respectively located at four corners of the steel pipe frame 2, wherein the bottom ends of two sliding columns 21 are slidably inserted into the guide groove 41 of one guide rail 4, and the bottom ends of the other two sliding columns 21 are slidably inserted into the guide groove 41 of the other guide rail 4.
The supporting columns 22 are parallel to the sliding columns 21, the supporting columns 22 are located between two adjacent sliding columns 21, and a supporting plate 231 is installed at the bottom end of each supporting column 22. In this embodiment, the number of the support columns 22 is four, four support columns 22 are equally divided into two groups, two groups of support columns 22 are arranged along the longitudinal bridge direction, each group of support columns 22 is located between two adjacent sliding columns 21, and two support columns 22 in each group are distributed at intervals along the transverse bridge direction. The top end of the support column 22 is flush with the top end of the sliding column 21, and the length of the support column 22 is smaller than that of the sliding column 21. The support plate 231 is slidably supported on the steel bar 11 by a connection member 235. In the present embodiment, the connecting member 235 connects the bottoms of the two supporting plates 231 arranged in the longitudinal bridge direction. Preferably, the number of connecting members 235 is two, with two connecting members 235 being located on opposite sides of the support post 22. Each connection comprises two i-beams 236 arranged side by side, the upper flange plate of each i-beam 236 is connected with the bottom of the support plate 231, and the lower flange plate of each i-beam 236 is slidably supported on the steel bar 11.
The top end of each sliding upright post 21 and the top end of each supporting upright post 22 are provided with a height adjusting device 6, and the height adjusting device 6 is provided with a distribution beam 7. In the present embodiment, the height adjusting device 6 includes a first wedge block 61, a second wedge block 62, an adjusting screw 65 and two locking nuts 67. The first wedge block 61 is placed on top of the support column 22 or the sliding column 21. The inclined surface of the first wedge block 61 is in sliding contact with the inclined surface of the second wedge block 62; the first wedge-shaped block 61 and the second wedge-shaped block 62 are both sleeved on the adjusting screw rod 65 in a sliding manner through a waist-shaped hole (not marked), and the length direction of the waist-shaped hole is parallel to the vertical direction; the two lock nuts 67 are both in threaded connection with the adjusting screw 65, one of the lock nuts 67 is located on one side of the first wedge block 61 facing away from the second wedge block 62, and the other lock nut 67 is located on one side of the second wedge block 62 facing away from the first wedge block 61. The distributor beam 7 is placed on the top surface of the second wedge-block 62. The first wedge block 61 and the second wedge block 62 can be relatively moved by rotating the lock nut 67, so as to adjust the height of the distributor beam 7. In the present embodiment, the distribution beam 7 includes a transverse distribution beam 71 and a longitudinal distribution beam 73, the transverse distribution beam 71 is disposed on the height adjusting device 6, and the longitudinal distribution beam 73 is disposed on the transverse distribution beam 71 and is perpendicular to the transverse distribution beam 71. The longitudinal distribution beams 73 may also be laid with wooden boards 75 on their top surfaces. In the present embodiment, the height adjusting device 6 is directly placed on the top end of the supporting column 22 or the sliding column 21, the horizontal distribution beam 71 is directly placed on the height adjusting device 6, and the vertical distribution beam 73 is directly placed on the horizontal distribution beam 71, so that the pressure born during construction can ensure that the horizontal distribution beam cannot be displaced, thereby facilitating the subsequent disassembly.
The top of each sliding column 21 and the top of each support column 22 are provided with a first gusset plate 81, and the bottom of each sliding column 21 and the bottom of each support column 22 are provided with a second gusset plate 83. The first gusset plate 81 and the second gusset plate 83 are both located between the height adjusting device 6 and the support plate 231. Two adjacent first gusset plates 81 are detachably connected with a first cross beam 24 through bolts, two adjacent second gusset plates 83 are detachably connected with a second cross beam 25 through bolts, an inclined strut 26 is connected with two adjacent first gusset plates 81 and the second gusset plates 83 through bolts, and the inclined strut 26 is positioned between the first cross beam 24 and the second cross beam 25. In the present embodiment, the first cross member 24 and the second cross member 25 are parallel to each other and are perpendicular to the support column 22. The sliding column 21 and the supporting column 22 are both steel pipe columns.
When the cast-in-place beam construction is carried out, firstly, a guide rail 4 is paved on the ground, a steel pipe frame 2 is erected, the bottom end of a sliding upright post 21 of the steel pipe frame 2 is in sliding connection with the guide rail 4, a template for casting the cast-in-place beam is erected on a distribution beam 7 of the steel pipe frame 2, concrete is cast to form the cast-in-place beam, the cast-in-place beam is maintained, and the template is removed after the concrete reaches the strength. The erection of the cast-in-place beam template belongs to the prior art, and is not described herein for the sake of brevity. And then, dismantling the support upright columns 22, the first cross beams 24, the second cross beams 25 and the inclined struts 26 between the two sliding upright columns 21, moving the sliding upright columns 21 to the pier 200 position of the next cast-in-place beam to be cast along the longitudinal bridge direction, and then installing the support upright columns 22, the first cross beams 24, the second cross beams 25 and the inclined struts 26 between the two sliding upright columns 21 to erect the steel pipe frame 2 so as to cast the cast-in-place beam at the next stage. And repeating the steps until the pouring of all cast-in-place beams on the bridge is completed.
When the assembly type steel pipe support 100 is used, the guide rail 4 is laid on the ground, the sliding upright post 21, the supporting upright post 22, the first cross beam 24, the second cross beam 25 and the inclined strut 26 are connected through the bolts, installation can be completed, welding or punching is not needed in a construction site, and the construction efficiency of the cast-in-place beam is improved. Meanwhile, the sliding upright post 21 is connected with the guide rail 4 on the ground in a sliding mode, a concrete foundation does not need to be arranged at the bottom end of the sliding upright post 21, and construction efficiency can be further improved. The bottom end of the supporting column 22 is connected with the supporting plate 231, the supporting plate 231 is slidably supported on the steel bar 11 of the pier through the connecting piece 235, a supporting force can be provided for the assembly-type steel pipe support 100 through the steel bar 11 on the pier, the bending of the first cross beam 24 and the second cross beam 25 is avoided, the stress strength of the assembly-type steel pipe support 100 is improved, and the assembly-type steel pipe support 100 can be used for building a large-span bridge.
This assembled steel pipe support 100 makes things convenient for the dismouting, does benefit to the transportation, and the reuse rate of support steel can reach 95%.
Above-mentioned assembled steel pipe support 100 for cast-in-place beam construction, connect through first crossbeam 24, second crossbeam 25 and bracing 26 between slip stand 21 and the support post 22 to setting up through backup pad 231 provides the holding power for the support, make the overall stability of support promote, and then be favorable to improving construction safety.
The assembly type steel pipe support 100 for the cast-in-place beam construction comprises the height adjusting device 6, the height of the assembly type steel pipe support 100 can be adjusted through the height adjusting device 6, the building and the dismantling of a template are facilitated, and the use is convenient.
It is to be understood that the number of the slide columns 21, the support columns 22, the first cross members 24, the second cross members 25, and the diagonal braces 26 is not limited to the present embodiment, and may be provided in other numbers as needed.
The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.
Claims (7)
1. An assembled steel pipe support (100) for cast-in-place beam construction, characterized in that: the bridge pier comprises a steel bar (11), a steel pipe frame (2) and two guide rails (4), wherein the steel bar (11) is used for penetrating through a bridge pier (200), the two guide rails (4) are arranged oppositely in parallel, and the guide rails (4) are laid on the ground; the steel pipe frame (2) comprises a plurality of sliding upright columns (21), a plurality of supporting upright columns (22), a plurality of first cross beams (24), a plurality of second cross beams (25) and a plurality of inclined struts (26), the plurality of sliding upright columns (21) are arranged in parallel at intervals, and the bottom ends of the plurality of sliding upright columns (21) are respectively connected with the two guide rails (4) in a sliding manner; the supporting columns (22) are parallel to the sliding columns (21), the supporting columns (22) are located between two adjacent sliding columns (21), a supporting plate (231) is arranged at the bottom end of each supporting column (22), and the supporting plate (231) is slidably supported on the steel bar (11) through a connecting piece (235); the top end of each sliding upright post (21) and the top end of each supporting upright post (22) are respectively provided with a height adjusting device (6), and a distribution beam (7) is arranged on each height adjusting device (6); the top of each sliding upright post (21) and the top of each supporting upright post (22) are respectively provided with a first gusset plate (81), and the bottom of each sliding upright post (21) and the bottom of each supporting upright post (22) are respectively provided with a second gusset plate (83); two adjacent first gusset plates (81) are detachably connected with a first cross beam (24) through bolts, two adjacent second gusset plates (83) are detachably connected with a second cross beam (25) through bolts, an inclined strut (26) is detachably connected with two adjacent first gusset plates (81) and the second gusset plates (83) through bolts, and the inclined strut (26) is located between the first cross beam (24) and the second cross beam (25).
2. The fabricated steel pipe bracket (100) for cast-in-place girder construction according to claim 1, wherein: the height adjusting device (6) comprises a first wedge-shaped block (61), a second wedge-shaped block (62), an adjusting screw rod (65) and two locking nuts (67), wherein the inclined surface of the first wedge-shaped block (61) is in sliding contact with the inclined surface of the second wedge-shaped block (62); the first wedge-shaped block (61) and the second wedge-shaped block (62) are sleeved on the adjusting screw rod (65) in a sliding manner through the kidney-shaped hole; two lock nuts (67) are in threaded connection with the adjusting screw (65), one lock nut (67) is located on one side, back to the second wedge-shaped block (62), of the first wedge-shaped block (61), the other lock nut (67) is located on one side, back to the first wedge-shaped block (61), of the second wedge-shaped block (62), the first wedge-shaped block (61) is placed at the top end of the corresponding supporting upright column (22) or the sliding upright column (21), and the distribution beam (7) is placed on the top face of the second wedge-shaped block (62).
3. The fabricated steel pipe bracket (100) for cast-in-place girder construction according to claim 1, wherein: the bottom of each supporting plate (231) is connected with two connecting pieces (235), and the two connecting pieces (235) are respectively supported at the two opposite ends of the steel bar (11) in a sliding manner.
4. The fabricated steel pipe bracket (100) for cast-in-place girder construction according to claim 3, wherein: each connector (235) comprises two I-beams (236) arranged side by side, the upper flange plate of each I-beam (236) is connected with the support plate (231), and the lower flange plate of each I-beam (236) is slidably supported on the steel bar (11).
5. The fabricated steel pipe bracket (100) for cast-in-place girder construction according to claim 1, wherein: the distribution beam (7) comprises a transverse distribution beam (71) and a longitudinal distribution beam (73), the transverse distribution beam (71) is arranged on the height adjusting device (6), and the longitudinal distribution beam (73) is arranged on the transverse distribution beam (71) and is perpendicular to the transverse distribution beam (71).
6. The fabricated steel pipe bracket (100) for cast-in-place girder construction according to claim 5, wherein: the top surface of the longitudinal distribution beam (73) is also paved with wood boards (75).
7. The fabricated steel pipe bracket (100) for cast-in-place girder construction according to claim 1, wherein: the top end of the support upright post (22) is flush with the top end of the sliding upright post (21), and the length of the support upright post (22) is smaller than that of the sliding upright post (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020569501.2U CN212294367U (en) | 2020-04-16 | 2020-04-16 | Assembled steel pipe support for cast-in-situ beam construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020569501.2U CN212294367U (en) | 2020-04-16 | 2020-04-16 | Assembled steel pipe support for cast-in-situ beam construction |
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| CN212294367U true CN212294367U (en) | 2021-01-05 |
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| CN202020569501.2U Expired - Fee Related CN212294367U (en) | 2020-04-16 | 2020-04-16 | Assembled steel pipe support for cast-in-situ beam construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941996A (en) * | 2021-02-03 | 2021-06-11 | 广东高达建设工程有限公司 | Municipal road for emergency rescue and construction method |
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2020
- 2020-04-16 CN CN202020569501.2U patent/CN212294367U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941996A (en) * | 2021-02-03 | 2021-06-11 | 广东高达建设工程有限公司 | Municipal road for emergency rescue and construction method |
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Granted publication date: 20210105 |