CN115573270A - Rotatable steel truss arch vertical splicing jig unit and rotatable steel truss arch vertical splicing jig - Google Patents
Rotatable steel truss arch vertical splicing jig unit and rotatable steel truss arch vertical splicing jig Download PDFInfo
- Publication number
- CN115573270A CN115573270A CN202211325036.8A CN202211325036A CN115573270A CN 115573270 A CN115573270 A CN 115573270A CN 202211325036 A CN202211325036 A CN 202211325036A CN 115573270 A CN115573270 A CN 115573270A
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- steel truss
- jig frame
- vertical
- truss arch
- frame body
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
-
- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides a rotatable steel truss arch vertical splicing jig frame unit and a rotatable steel truss arch vertical splicing jig frame. The vertical assembly jig frame body is hinged with the bracket; the angle limiting device is arranged at the bottom of the vertical assembly jig frame body; two ends of the driving device are respectively hinged with the bracket and the vertical splicing jig frame body; the driving device is used for driving the vertical assembly jig frame body to rotate around the hinged position of the vertical assembly jig frame body and the support, and the angle limiting device is used for limiting the rotating angle of the vertical assembly jig frame body. The rotatable steel truss arch vertical splicing jig frame comprises two rotatable steel truss arch vertical splicing jig frame units which are arranged at intervals. The rotatable steel truss arch vertical splicing jig unit and the rotatable steel truss arch vertical splicing jig provided by the invention can simulate the working condition of a steel truss arch at a bridge position, simplify the installation process, enable the steel truss arch to be easily hoisted and reduce the safety risk.
Description
Technical Field
The invention relates to the technical field of bridge installation, in particular to a rotatable steel truss arch vertical splicing jig frame unit and a rotatable steel truss arch vertical splicing jig frame.
Background
The steel truss arch bridge is usually built in remote areas such as mountains and rivers, and the terrain is rugged, the field is limited, and therefore the steel truss arch bridge cannot be directly lifted and installed after trial assembly is completed. At present, the domestic large-span, large-tonnage and inward-inclined concrete-filled steel tube steel truss arch is usually installed by adopting a whole-section inclined-pulling buckling-hanging method, the main trial-assembling process is turned over after horizontal assembling, the method is complex in process, the problem of difficult matching of the joint between the sections of the steel truss arch is easy to occur in the actual installation process, and meanwhile, the horizontal trial assembling or horizontal assembling in the prior art can also cause the problems of large linear error of a rod piece, long debugging period in the installation process and the like. And because the horizontal included angle and the linear shape of each section of the steel truss arch are different, the lifting point before lifting is difficult to control, the gravity center is often not controlled in the lifting process, and a larger safety risk exists.
Disclosure of Invention
The invention solves the problems of how to realize vertical splicing of the steel truss arch, simulating the working condition of the steel truss arch at the bridge position, simplifying the installation process of the steel truss arch, controlling the gravity center of the steel truss arch, enabling the steel truss arch to be easily hoisted and reducing the safety risk.
In a first aspect, the invention provides a rotatable steel truss arch vertical splicing jig frame unit, which comprises a support, a vertical splicing jig frame body, an angle limiting device and a driving device, wherein the angle limiting device comprises a first angle limiting device and a second angle limiting device;
the vertical assembly jig frame body is hinged with the bracket; the angle limiting device is arranged at the bottom of the vertical assembly jig frame body; two ends of the driving device are respectively hinged with the bracket and the vertical splicing jig frame body;
the driving device is used for driving the vertical assembly jig frame body to rotate around the hinged position of the vertical assembly jig frame body and the support, and the angle limiting device is used for limiting the rotating angle of the vertical assembly jig frame body.
Further, be equipped with two stoppers on the bed-jig body is pieced together immediately, two the stopper respectively with immediately piece together bed-jig body sliding connection, just the stopper with it is equipped with locking structure to piece together immediately between the bed-jig body, locking structure be used for with the stopper is fixed in immediately piece together the bed-jig body.
Furthermore, flexible pads are respectively arranged on the inner sides of the two limiting blocks.
Furthermore, a plurality of first angle limiting holes are formed in the angle limiting device, the first angle limiting holes are arranged at intervals and are located on the rotating track of the vertical splicing jig frame body, a second angle limiting hole is formed in the support, and any one of the first angle limiting holes is used for corresponding arrangement with the second angle limiting hole.
Further, drive arrangement includes the telescoping cylinder, the both ends of telescoping cylinder respectively with the support with it is articulated to piece together the bed-jig body immediately.
Furthermore, the angle limiting device is of a semicircular structure, and two ends of the angle limiting device are fixedly connected with the vertical splicing jig frame body respectively and symmetrically arranged relative to the central line.
Further, the bottom of the support is provided with a lower distribution beam, the top of the support is provided with an upper distribution beam, the upper distribution beam is fixedly connected with a main lug plate, and the vertical assembly jig frame body is hinged to the main lug plate.
Furthermore, a pad beam is arranged on the vertical splicing jig frame body.
In a second aspect, the invention provides a rotatable steel truss arch vertical splicing jig frame, which comprises two rotatable steel truss arch vertical splicing jig frame units, wherein the two rotatable steel truss arch vertical splicing jig frame units are arranged on a rotating axis of a vertical splicing jig frame body at intervals.
Further, the device also comprises a distance adjusting device, wherein the distance adjusting device comprises a driving device, a track and a moving part; the track is arranged in parallel to the rotation axis direction of the vertical splicing jig frame body, and the moving part is arranged at the bottom of a support of the rotatable steel truss arch vertical splicing jig frame unit and used for moving along the track; the driving device is used for driving the rotatable steel truss arch vertical assembly jig frame unit to move along the track.
The rotatable steel truss arch vertical splicing jig frame unit provided by the invention drives the vertical splicing jig frame body to rotate around the hinged position of the vertical splicing jig frame body and the support through the driving device, and meanwhile, the angle limiting device can limit the rotating angle of the vertical splicing jig frame body, so that the steel truss arch can be directly spliced at the position of the rotating angle, the vertical splicing of the steel truss arch is realized, the complicated steps of turning over required by horizontal splicing are reduced, and meanwhile, the installation error caused by the horizontal splicing and the subsequent adjusting process caused by deformation can also be reduced. Moreover, the rotatable steel truss arch vertical splicing jig frame unit can rotate by a proper angle according to different positions of steel truss arch sections to be spliced, so that the splicing angle of the steel truss arch sections corresponds to the position angle of the steel truss arch sections in a bridge, the working condition of the steel truss arch sections at the bridge position can be simulated, adjustment is not needed after splicing, direct hoisting can be carried out according to the position of the center of gravity, and the rotary steel truss arch vertical splicing jig frame unit is very convenient and quick. In addition, the rotatable vertical splicing jig frame for the steel truss arch can meet the vertical splicing of two-way inclination angles at two sides of the steel truss arch, and the steel truss arch can be adjusted and spliced at two sides of the steel truss arch.
Drawings
FIG. 1 is a schematic structural diagram of a rotatable steel truss arch vertical jig assembly unit according to an embodiment of the invention;
FIG. 2 is a schematic structural view of a rotatable steel truss arch vertical jig assembly unit according to an embodiment of the present invention in a horizontal position;
FIG. 3 is a schematic structural diagram of a rotatable steel truss arch erecting jig assembly according to an embodiment of the invention;
fig. 4 is a schematic structural view of the rotatable steel truss arch vertical jig-saw unit according to the embodiment of the invention when rotating a certain angle.
Description of reference numerals:
10-rotatable steel truss arch vertical splicing jig frame unit; 20-steel truss arches; 30-a track; 11-vertically assembling the jig frame body; 111-a flexible mat; 112-a stop block; 113-a bolster; 114-a connecting flange; 12-angle limiting means; 121-a first angle limiting hole; 13-a drive device; 131-connecting ear plate; 14-a scaffold; 141-upper distribution beam; 142-a second angle limiting hole; 143-lower distribution beam; 15-main ear plate; 31-a power plant; 32-moving part.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein.
As shown in fig. 1 to 4, the rotatable steel truss arch vertical jig assembly unit 10 of the present embodiment includes a support 14, a vertical jig assembly body 11, an angle limiting device 12, and a driving device 13.
The vertical assembly jig frame body 11 is hinged with the support 14; the angle limiting device 12 is arranged at the bottom of the vertical assembly jig frame body 11; two ends of the driving device 13 are respectively hinged with the support 14 and the vertical assembly jig frame body 11.
The driving device 13 is used for driving the vertical assembly jig frame body 11 to rotate by a certain angle around the hinged position of the support 14, the vertical assembly jig frame body 11 is used for driving the angle limiting device 12 connected with the vertical assembly jig frame body to rotate together, and the angle limiting device 12 is used for limiting the rotating angle of the vertical assembly jig frame body 11.
Specifically, in some embodiments, the support 14 is an upright triangular support, the bottom of the support 14 is used for being fixedly connected with the lower distribution beam 143, the top of the support 14 is fixedly connected with the upper distribution beam 141, the top of the upper distribution beam 141 is provided with the main lug plate 15, and the main lug plate 15 is hinged to the middle of the upright jig frame body 11. The lower distribution beam 143 is used for laying the mat on the support 14. The upper distribution beam 141 is used for laying the upper main ear plate 15.
The vertical splicing jig frame body 11 is used for placing the steel truss arch 20 to be spliced, and the vertical splicing jig frame body 11 is long in length and needs to be arranged in a segmented mode, so that the two sections of vertical splicing jig frame bodies 11 are fixedly connected through the connecting flange 114.
The jig frame body 11 is vertically assembled and is provided with two limiting blocks 112, two the limiting blocks 112 are respectively in sliding connection with the jig frame body 11, the limiting blocks 112 are arranged between the jig frame body 11 and are vertically assembled, and locking structures are arranged between the limiting blocks 112 and the jig frame body 11 and are used for fixing the limiting blocks 112 to the jig frame body 11. For example, a hydraulic driving device may be provided to drive the limiting block 112 to move along the length direction of the jig frame body 11. Two stopper 112 all can remove, not only can satisfy the demand of assembling of the steel truss arch 20 of different length dimensions, adjust the distance between two stopper 112 according to the length of steel truss arch 20, simultaneously, can also adjust the position of steel truss arch 20 on assembling the bed-jig body 11 immediately, and its aim at makes the focus of steel truss arch 20 and the center that rotatable steel truss arch immediately assembled bed-jig unit 10 keep unanimous for hoist and mount. The locking structure may be a pin and a pin hole that cooperate with each other.
The inner sides of the two limiting blocks 112 are respectively provided with a flexible pad 111, the flexible pads 111 can be rubber pads and the like, and can play a role in protecting the steel truss arches 20 placed on the vertical splicing jig body 11, so that abrasion during splicing is avoided.
The vertical assembly jig frame body 11 is provided with a pad beam 113. The pad beams 113 are used for padding and protecting the steel pipes of the steel truss arches 20 to be assembled.
A plurality of first angle limiting holes 121 are formed in the angle limiting device 12, the first angle limiting holes 121 are arranged at intervals and located on a rotating track of the vertical splicing jig frame body 11, a second angle limiting hole 142 is formed in the support 14, and any one of the first angle limiting holes 121 is used for being arranged corresponding to the second angle limiting hole 142.
Specifically, in some embodiments, the angle limiting device 12 is disposed in the support 14 at the bottom of the jig frame body 11, a plurality of first angle limiting holes 121 are uniformly formed in a circular ring surface of the support near the periphery, a limiting lug plate (not shown) is welded on the support 14, a second angle limiting hole 142 is formed in the limiting lug plate, the number of the second angle limiting holes 142 is more than one, and the rotating angle of the jig frame body 11 can be fixed by inserting pins into the first angle limiting holes 121 and the second angle limiting holes 142. The more the first angle limiting hole 121 and the second angle limiting hole 142 are formed, the finer the adjustable angle value.
The driving device 13 comprises a telescopic cylinder, and two ends of the telescopic cylinder are respectively hinged with the support 14 and the vertical assembly jig frame body 11.
The telescopic cylinder comprises an oil cylinder or a hydraulic cylinder. Specifically, the bracket 14 on the same side of the center line L and the bottom of the vertical jig frame body 11 may be respectively provided with a connecting lug plate 131, and two ends of the telescopic cylinder are respectively hinged to the connecting lug plates 131. When the telescopic cylinder retracts to the minimum length, the vertically-spliced jig frame body 11 is in a horizontal 0-degree state, the longer the telescopic cylinder extends, the larger the rotation angle of the vertically-spliced jig frame body 11 is, and when the telescopic cylinder extends to the maximum length, the included angle between the vertically-spliced jig frame body and the horizontal plane is 45 degrees. For avoiding the mobile device, can set up the connection otic placode 131 in rotatable steel purlin arch both sides of piecing together bed-jig unit central line L immediately, two sets of connection otic placodes 131 symmetry sets up, like this, when needs are installed the steel purlin arch 20 of reverse angle, need not the mobile device, only need with the oil top from one side dismouting to one side in addition can.
The angle alpha range of the rotation of the vertical splicing jig frame body 11 around the hinged point with the support 14 is 0-45 degrees, the angle adjusting range can meet the requirement of the installation angle of the steel truss arch 20, meanwhile, the safety and the reliability of the whole device are guaranteed, and the tipping is avoided.
The angle limiting device 12 is of a semicircular structure, and two ends of the angle limiting device 12 are fixedly connected with the vertical assembly jig frame body 11 respectively and are symmetrically arranged relative to the central line.
The angle limiting device 12 with the semicircular structure is beneficial to coordinating the center of gravity of the jig frame body 11 during rotation.
As shown in fig. 3, the embodiment further provides a rotatable steel truss arch vertical splicing jig, which comprises two rotatable steel truss arch vertical splicing jig units 10, wherein the two rotatable steel truss arch vertical splicing jig units 10 are arranged on the rotation axis of the vertical splicing jig body 11 at intervals.
Specifically, the distance between two rotatable steel truss arch vertical assembly jig frame units 10 can be adjusted by arranging an adjusting device. The distance adjusting device comprises a power device 31, a track 30 and a moving part 32; the track 30 is arranged parallel to the rotation axis direction of the vertical jig assembly body 11, and the moving part 32 is arranged at the bottom of the support 14 of the rotatable steel truss arch vertical jig assembly unit 10 and used for moving along the track 30. The fixed end and the movable end of the power device 31 are respectively connected with the track 30 and the rotatable steel truss arch vertical jig splicing unit 10 and used for driving the rotatable steel truss arch vertical jig splicing unit 10 to move along the track 30.
The power device 31 can be an oil cylinder and the like, the fixed end of the oil cylinder is fixed on the track 30, the moving end of the oil cylinder is in driving connection with the bottom of the rotatable steel truss arch vertical assembly jig frame unit 10, and only one power device 31 can be arranged, namely, the distance between the two rotatable steel truss arch vertical assembly jig frame units 10 is adjusted by moving one rotatable steel truss arch vertical assembly jig frame unit 10; also can set up two power device 31, two power device 31 are stood to piece together bed-jig unit 10 to the rotatable steel truss that corresponds respectively and are removed to adjust two rotatable steel trusses and stood the distance of piecing together between the bed-jig unit 10, can quick adjustment two rotatable steel trusses like this and stood the distance of piecing together between the bed-jig unit 10. The moving portion 32 may be a slider, a roller, or the like. After the distance between the rotatable steel truss arch vertical splicing jig units 10 is adjusted in place, in order to ensure the stability of the whole device, a clamping structure can be arranged between the track 30 and the rotatable steel truss arch vertical splicing jig units 10 so as to prevent accidents caused by accidental sliding of the rotatable steel truss arch vertical splicing jig units 10. For example, a clamping hole may be provided between the rail 30 and the lower distribution beam 143, and the position of the rotatable steel truss erecting jig frame unit 10 and the rail 30 may be relatively fixed by inserting a bolt. The distance between the two rotatable steel truss arches vertical splicing jig frame units 10 is adjustable, the vertical splicing requirements of the steel truss arches 20 with different truss widths can be met, and the application range of the rotatable steel truss arch vertical splicing jig frame of the embodiment is wider.
The gravity center O of the steel truss arch 20 is obtained through initial calculation, when the steel truss arch 20 is placed, the gravity center perpendicular line of the steel truss arch 20 passes through the center of the main lug plate 15 below the vertical splicing jig frame body 11, and the limiting blocks 112 at two ends are adjusted, so that the gravity center O of the steel truss arch 20 is controlled to be located at the center of the rotatable steel truss arch vertical splicing jig frame, and the steel truss arch 20 is convenient to hoist.
The rotatable steel truss arch vertical splicing jig frame can meet the splicing requirements of steel truss arches with different angles, so that the steel truss arches can be spliced on the rotatable steel truss arch vertical splicing jig frame under the bridge working condition of simulating the steel truss arches, the angle is the same as the actual installation angle during splicing, the gravity center position can be adjusted through the rotatable steel truss arch vertical splicing jig frame, the integral safety and the stability of the device are guaranteed, and meanwhile, the lifting and the subsequent installation are facilitated. And the steel truss arch is vertically spliced to ensure that the stress of the steel truss arch is consistent with the stress of the actual working condition, so that the problems that the deformation direction is inconsistent, the linearity is still required to be adjusted in the installation process after splicing and the like are avoided, the working efficiency is improved, and the problems of wrong platforms, overlarge gaps and the like which can also occur at the end of the steel truss arch after linear adjustment due to deformation are avoided. After the steel truss arches are vertically spliced on the rotatable steel truss arch vertical splicing jig frame, the gravity centers of the steel truss arches are clear and consistent with the working conditions of on-site girder erection, balanced stress of lifting points can be guaranteed when the on-site girder erection is carried out, and safety risks are reduced. Two rotatable steel truss arches that set up side by side are encircleed and are immediately pieced together bed-jig unit can satisfy the two-way inclination of steel truss arch both sides and immediately piece together, can adjust, assemble the steel truss arch in the both sides that the steel truss encircles.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A rotatable steel truss arch vertical splicing jig unit (10) is characterized by comprising a support (14), a vertical splicing jig body (11), an angle limiting device (12) and a driving device (13);
the vertical splicing jig frame body (11) is hinged with the support (14), the angle limiting device (12) is arranged at the bottom of the vertical splicing jig frame body (11), and two ends of the driving device (13) are hinged with the support (14) and the vertical splicing jig frame body (11) respectively;
the driving device (13) is used for driving the vertical assembly jig frame body (11) to rotate around the hinged position of the vertical assembly jig frame body and the support (14), and the angle limiting device (12) is used for limiting the rotating angle of the vertical assembly jig frame body (11).
2. The rotatable steel truss arch vertical assembly jig frame unit (10) as claimed in claim 1, wherein two limit blocks (112) are arranged on the vertical assembly jig frame body (11), the two limit blocks (112) are respectively connected with the vertical assembly jig frame body (11) in a sliding manner, and a locking structure is arranged between the limit blocks (112) and the vertical assembly jig frame body (11), and the locking structure is used for fixing the limit blocks (112) to the vertical assembly jig frame body (11).
3. The rotatable steel truss arch erection jig unit (10) according to claim 2, wherein the inner sides of the two limit blocks (112) are respectively provided with a flexible pad (111).
4. The rotatable steel truss arch erecting jig assembly unit (10) according to claim 1, wherein a plurality of first angle limiting holes (121) are formed in the angle limiting device (12), the plurality of first angle limiting holes (121) are arranged at intervals and located on a rotation track of the erecting jig assembly body (11), a second angle limiting hole (142) is formed in the support (14), and any one of the plurality of first angle limiting holes (121) is used for being arranged corresponding to the second angle limiting hole (142).
5. Rotatable steel truss arch erector module bed-jig unit (10) of claim 1, wherein the drive means (13) comprises a telescopic cylinder, both ends of which are hinged with the support (14) and the erector module bed-jig body (11), respectively.
6. The rotatable steel truss arch vertical jig assembly unit (10) according to claim 5, wherein the angle limiting device (12) is of a semicircular structure, and two ends of the angle limiting device (12) are respectively fixedly connected with the vertical jig assembly body (11) and are symmetrically arranged relative to the central line.
7. The rotatable steel truss arch erecting and splicing jig frame unit (10) according to claim 1, wherein a lower distribution beam (143) is arranged at the bottom of the support (14), an upper distribution beam (141) is arranged at the top of the support (14), a main lug plate (15) is fixedly connected to the upper distribution beam (141), and the erecting and splicing jig frame body (11) is hinged to the main lug plate (15).
8. The rotatable steel truss arch vertical jig assembly unit (10) as claimed in claim 1, wherein the vertical jig assembly body (11) is provided with a pad beam (113).
9. A rotatable steel truss arch vertical assembly jig frame, which is characterized by comprising two rotatable steel truss arch vertical assembly jig frame units (10) according to any one of claims 1 to 8, wherein the two rotatable steel truss arch vertical assembly jig frame units (10) are arranged on the rotation axis of a vertical assembly jig frame body (11) at intervals.
10. The rotatable steel truss arch split jig frame of claim 9, further comprising a distance adjustment device, wherein the distance adjustment device comprises a power device (31), a track (30) and a moving part (32); the rail (30) is arranged in parallel to the direction of the rotation axis of the vertical assembly jig frame body (11), and the moving part (144) is arranged at the bottom of a support (14) of the rotatable steel truss arch vertical assembly jig frame unit (10) and used for moving along the rail (30); the power device (31) is used for driving the rotatable steel truss arch vertical assembly jig frame unit (10) to move along the track (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211325036.8A CN115573270A (en) | 2022-10-27 | 2022-10-27 | Rotatable steel truss arch vertical splicing jig unit and rotatable steel truss arch vertical splicing jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211325036.8A CN115573270A (en) | 2022-10-27 | 2022-10-27 | Rotatable steel truss arch vertical splicing jig unit and rotatable steel truss arch vertical splicing jig |
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| CN115573270A true CN115573270A (en) | 2023-01-06 |
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| CN202211325036.8A Pending CN115573270A (en) | 2022-10-27 | 2022-10-27 | Rotatable steel truss arch vertical splicing jig unit and rotatable steel truss arch vertical splicing jig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116815613A (en) * | 2023-07-03 | 2023-09-29 | 贵州省公路工程集团有限公司 | Steel truss-concrete combined arch bridge whole-section prefabricated jig frame and manufacturing method |
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2022
- 2022-10-27 CN CN202211325036.8A patent/CN115573270A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116815613A (en) * | 2023-07-03 | 2023-09-29 | 贵州省公路工程集团有限公司 | Steel truss-concrete combined arch bridge whole-section prefabricated jig frame and manufacturing method |
| CN116815613B (en) * | 2023-07-03 | 2024-03-22 | 贵州省公路工程集团有限公司 | Steel truss-concrete combined arch bridge whole-section prefabricated jig frame and manufacturing method |
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