CN111894136A - Construction method of large-span steel reinforced concrete beam - Google Patents
Construction method of large-span steel reinforced concrete beam Download PDFInfo
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- CN111894136A CN111894136A CN202010796209.9A CN202010796209A CN111894136A CN 111894136 A CN111894136 A CN 111894136A CN 202010796209 A CN202010796209 A CN 202010796209A CN 111894136 A CN111894136 A CN 111894136A
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- jacking
- jacking pipe
- pipe body
- reinforced concrete
- groove
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
Abstract
The invention discloses a construction method of a large-span steel reinforced concrete beam, which comprises the following steps: 1) a plurality of groups of scale guiding rule jacking pipe devices are arranged on a bottom die of the steel reinforced concrete section steel beam to be installed, and two scale guiding rule jacking pipe devices are oppositely arranged to form a group of supporting units; 2) hoisting the section steel beam to a position between the two graduated ruler jacking pipe devices by adopting a crane, and clamping the graduated ruler jacking pipe devices on an upper flange plate of the section steel beam; 3) jacking the scale near-scale jacking pipe device by adopting a jack, and driving the section steel beam to move to an appointed position; 4) binding and welding bottom ribs and gluten of the opposite steel beams; 5) placing stirrups and lower stirrups cushion blocks; 6) and (5) after the crane is unloaded, supporting the template and pouring concrete. To the installation of large-span shaped steel concrete beam, have fine location and support fixed effect, simple structure, the jacking pipe can play fine supporting effect and can fix the top as required and hold in the palm the position, has improved the efficiency of construction, has practiced thrift construction resources.
Description
Technical Field
The invention belongs to the technical field of building construction equipment, and particularly relates to a construction method of a large-span steel reinforced concrete beam.
Background
Along with the continuous improvement of building technology, building structure form is more and more complicated, and shaped steel concrete structure uses more and more in high-accuracy sharp building, and the structural style of solving the large-span has: the medium-sized steel concrete structure can effectively reduce the section area of the member and improve the stress performance of the member. The structural member is dense, the connecting nodes are numerous, the positioning, node connection, formwork supporting and fixing and concrete pouring of the structural member are complex problems, the construction precision requirement is high, the construction difficulty is high, the construction quality and the construction period are greatly influenced, and how to adopt safe, high-quality, economic and efficient construction measures to guarantee is an important problem of construction technology management.
For the formwork installation process of the large-span steel reinforced concrete beam, a crane is generally adopted for direct hoisting, after the hoisting is in place, the positioning control of the section steel in the beam mold is carried out through manual work, then stirrups are bound, cushion blocks are placed, and the crane is unloaded after the fixation is finished. Like this, traditional work progress leads to the location of shaped steel fossil fragments in the template inaccurate, in installation positioning process, needs long-time the hoist resource that occupies, and construction engineering is wasted time and energy, and the efficiency of construction is lower.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a construction method of the profiled bar concrete beam, which can improve the construction efficiency, more accurately position the spatial position of the profiled bar keel in the profiled bar concrete beam and play a role in supporting and fixing.
In order to solve the technical problems, the invention adopts the following technical scheme:
1. a construction method of a large-span steel reinforced concrete beam is characterized by comprising the following steps:
1) a plurality of groups of scale guiding rule jacking pipe devices are arranged on a bottom die of the steel reinforced concrete section steel beam to be installed, and two scale guiding rule jacking pipe devices are oppositely arranged to form a group of supporting units;
2) hoisting the section steel beam to a position between the two graduated ruler jacking pipe devices by adopting a crane, and clamping the graduated ruler jacking pipe devices on an upper flange plate of the section steel beam;
3) jacking the scale near-scale jacking pipe device by adopting a jack, and driving the section steel beam to move to an appointed position;
4) binding and welding bottom ribs and gluten of the opposite steel beams;
5) placing stirrups and lower stirrups cushion blocks;
6) and (5) after the crane is unloaded, supporting the template and pouring concrete.
Preferably, the graduated guiding ruler jacking pipe device comprises a jacking pipe body, wherein two sliding grooves are vertically formed in the side walls of two opposite sides of the jacking pipe body, and penetrate through the upper end of the jacking pipe body; a jacking cross beam is horizontally arranged in the sliding groove, penetrates through the sliding groove and is connected with the sliding groove in a sliding fit manner; a clamping groove is horizontally arranged at one end of the jacking cross beam and penetrates through two opposite sides of the jacking cross beam.
When the device is specifically implemented, a plurality of groups of scale guiding ruler jacking pipe devices are arranged on a bottom mould of a steel reinforced concrete beam side by side in advance, two groups of devices are a bearing unit, after the steel reinforced concrete beam is hoisted to a primary position by a crane, the tail end of a jacking cross beam is clamped on a flange plate of the steel reinforced concrete beam by a clamping groove at the tail end of the jacking cross beam, the steel reinforced concrete beam is fixed, then the jacking cross beam is driven by the jack to slide along a sliding groove, the steel reinforced concrete beam is jacked to a set position, the space positioning and supporting fixing effects on the steel reinforced concrete beam are achieved, the construction efficiency is improved, manpower is saved, and.
As a further improvement of the invention, a jacking support is arranged in the jacking pipe body, and the jacking support is fixedly connected with the jacking cross beam and is in sliding fit with the inner wall of the jacking pipe body; the two sides of the jacking support can be matched with two opposite side walls of the jacking pipe body to form a supporting structure. The jacking support is arranged below the jacking cross beam, and the jacking support and the side wall of the jacking pipe body are matched to form a supporting structure, so that the jacking pipe body can play a better supporting role, and the jacking pipe body is effectively prevented from overturning under the gravity action of the steel beam.
As a further optimization, the jacking is of a disc structure, stopping grooves are formed in two opposite sides of the jacking, a pin shaft is arranged in each stopping groove, a stopping plate is rotatably connected to each pin shaft, and the upper end of each stopping plate is rotatably connected with each pin shaft; a torsion spring is further sleeved on the pin shaft, one support arm of the torsion spring is connected with the backstop plate, and the other support arm of the torsion spring is connected with the pin shaft; under the action of the torsion spring, the lower end of the retaining plate can be popped out from the retaining groove; at the inner wall of jacking pipe body, correspond the position of stopping board, from last to being equipped with a plurality of tooth's sockets down, the lower extreme of stopping board stretches out in can stretching into the tooth's socket after the stopping groove to cooperate with the tooth's socket and form the support location. The jacking device can only move upwards through the retaining plate, and can be ejected out of the retaining groove after moving for a certain distance, so that the jacking cross beam on the jacking device can be supported. By adopting the structure, the structure is simpler, and the supporting effect is better.
Preferably, the tooth grooves are continuously arranged, so that the inner wall of the jacking pipe body is of a zigzag structure corresponding to the position of the retaining plate. Adopt the tooth's socket of sawtooth pattern structure, make the tooth's socket have an inclined plane and a horizontal plane, when the top holds in the palm and shifts up, the stopping board is under the inclined plane effect of tooth's socket, be impressed gradually in the stopping groove, the top holds in the palm this moment and slides along jacking pipe body inner wall, when the tip of tooth's socket is crossed to the end of stopping board, the stopping board pops out under the effect of torsional spring, terminal surface supports on the horizontal plane of tooth's socket, play better supporting effect, and simultaneously, adopt the tooth's socket of zigzag, the tooth's socket forms the bearing structure of bracket form, the bearing capacity of tooth's socket has been improved, the supporting effect.
Preferably, the lower end of the jacking pipe body is of a closed structure, a round rotating base is arranged at the bottom of the jacking pipe body, the lower end face of the rotating base is attached to the bottom of the jacking pipe body, and the peripheral surface of the rotating base is in clearance fit with the inner wall of the jacking pipe body; guide rods are vertically arranged on two opposite sides of the upper part of the rotating base, and the two guide rods are distributed on two sides of the sliding chute; the guide rod penetrates through the jacking and then extends to the opening end of the jacking pipe body, and the jacking is in sliding fit with the guide rod.
An unlocking groove is formed in one side of the tooth socket, one side of the unlocking groove is communicated with the tooth socket, the depth of the unlocking groove is gradually reduced from one side close to the tooth socket to the other side, and the section of the unlocking groove is in a wedge-shaped groove structure; the guide rod is rotated to drive the jacking to rotate around the axis of the jacking pipe body, so that the retaining plate is moved out from one side of the tooth groove and enters the unlocking groove.
After using the completion, need to hold in the palm the withdrawal to initial position with the top, could used repeatedly, through set up a rotatable rotation base in jacking pipe body, and through two guide bar drives, stir the guide bar, make the top support rotate certain angle along with the guide bar, the stopping board is slided into the unlocking groove of one side by the tooth's socket this moment, continue to rotate, the stopping board is by the unlocking groove roll-off, the end and the jacking pipe body inner wall contact of stopping board this moment, be impressed in the stopping groove completely, thus, the top holds in the palm just can the lapse, after sliding to the assigned position, through the reverse rotation guide bar, make the stopping board slide into the tooth's socket through the unlocking groove, the stopping board pops out, thereby can used repeatedly.
Preferably, a height scale layer is arranged on the outer side wall of the jacking pipe body and is arranged on one side of the sliding groove and distributed along the axial direction of the jacking pipe body. Therefore, the height of the jacking cross beam can be observed more visually, and accurate adjustment and positioning are facilitated.
Compared with the prior art, the invention has the following beneficial effects: to the installation of large-span shaped steel concrete beam, have fine location and support fixed effect, simple structure, the jacking pipe can play fine supporting effect and can fix the top as required and hold in the palm the position, has improved the efficiency of construction, has practiced thrift construction resources.
Drawings
FIG. 1 is a schematic front view of a jacking pipe body according to the present invention;
FIG. 2 is a schematic top view of a jacking pipe body according to the present invention;
FIG. 3 is a front view of the tooth slot of the present invention;
FIG. 4 is a schematic view of the process of using the present invention
The reference numbers illustrate: a riser body 1; a chute 2; jacking the cross beam 3; a card slot 4; a jacking 5; a backstop slot 6; a backstop plate 7; a tooth socket 8; the base 9 is rotated; a guide rod 10; unlocking the slot 11.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1: referring to fig. 1 to 4, a construction method of a long-span steel reinforced concrete beam includes the following steps:
1) a plurality of groups of scale guiding rule jacking pipe devices are arranged on a bottom die of the steel reinforced concrete section steel beam to be installed, and two scale guiding rule jacking pipe devices are oppositely arranged to form a group of supporting units;
the graduated guiding rule jacking pipe device adopted in construction comprises a jacking pipe body 1, wherein two sliding chutes 2 are vertically formed in the side walls of two opposite sides of the jacking pipe body 1, and the sliding chutes 2 penetrate through the upper end of the jacking pipe body 1; a jacking cross beam 3 is horizontally arranged in the sliding chute 2, and the jacking cross beam 3 penetrates through the sliding chute 2 and is connected with the sliding chute in a sliding fit manner;
2) hoisting the section steel beam to a position between the two graduated ruler jacking pipe devices by adopting a crane, and clamping the graduated ruler jacking pipe devices on an upper flange plate of the section steel beam;
one end of the jacking cross beam 3 is horizontally provided with a clamping groove 4, and the clamping groove 4 penetrates through two opposite sides of the jacking cross beam 3. When the device is specifically implemented, a plurality of groups of scale guiding ruler jacking pipe devices are arranged on a bottom mould of a steel reinforced concrete beam side by side in advance, two groups of devices are a bearing unit, after the steel reinforced concrete beam is hoisted to a primary position by a crane, the tail end of a jacking cross beam 3 is clamped on a flange plate of the steel reinforced concrete beam by a clamping groove 4, the steel reinforced concrete beam is fixed, then the jacking cross beam 3 is driven by a jack to slide along a sliding groove 2, the steel reinforced concrete beam is jacked to a set position, the space positioning and supporting fixing effects on the steel reinforced concrete beam are achieved, the construction efficiency is improved, manpower is saved, and the operation is simple and easy.
3) Jacking the scale near-scale jacking pipe device by adopting a jack, and driving the section steel beam to move to an appointed position;
a jacking bracket 5 is arranged in the jacking pipe body 1, and the jacking bracket 5 is fixedly connected with the jacking cross beam 3 and is in sliding fit with the inner wall of the jacking pipe body 1; the jacking 5 is of a disc structure. The anti-back-up device is characterized in that anti-back-up grooves 6 are formed in two opposite sides of the jacking 5, a pin shaft is arranged in each anti-back-up groove 6, an anti-back-up plate 7 is rotatably connected to each pin shaft, and the upper end of each anti-back-up plate 7 is rotatably connected with each pin shaft; a torsion spring is further sleeved on the pin shaft, one support arm of the torsion spring is connected with the backstop plate 7, and the other support arm of the torsion spring is connected with the pin shaft; under the action of the torsion spring, the lower end of the retaining plate 7 can be popped out from the retaining groove 6; at the inner wall of jacking pipe body 1, correspond the position of stopping board 7, from last to being equipped with a plurality of tooth's socket 8 down, the lower extreme of stopping board 7 stretches out and can stretch into in the tooth's socket 8 after stopping groove 6 to cooperate with tooth's socket 8 and form the support location. The tooth grooves 8 are continuously arranged, so that the inner wall of the jacking pipe body 1 is of a zigzag structure corresponding to the position of the retaining plate 7.
The two sides of the jacking 5 can be matched with the two opposite side walls of the jacking pipe body 1 to form a supporting structure. Set up the top through the below at jacking crossbeam 3 and hold in the palm 5 to the lateral wall cooperation of the top support 5 and the push pipe body forms bearing structure, makes jacking pipe body 1 play better supporting role, prevents effectively that jacking pipe body 1 from toppling under the action of gravity of girder steel. The jacking bracket 5 can only move upwards through the retaining plate 7, and can be popped out from the retaining groove 6 after moving for a certain distance, so that the jacking cross beam 3 on the jacking bracket 5 is supported. By adopting the structure, the structure is simpler, and the supporting effect is better.
Adopt sawtooth pattern structure's tooth's socket 8, make tooth's socket 8 have an inclined plane and a horizontal plane, when top support 5 shifts up, stopping board 7 is under tooth's socket 8 inclined plane effect, be impressed gradually in stopping groove 6, top support 5 slides along 1 inner wall of jacking pipe body this moment, when the tooth top of tooth's socket 8 is crossed to the end of stopping board 7, stopping board 7 pops out under the effect of torsional spring, terminal surface supports on tooth's socket 8's horizontal plane, play better supporting effect, and simultaneously, adopt sawtooth-shaped tooth's socket 8, tooth's socket 8 forms the bearing structure of bracket form, the bearing capacity of tooth's socket 8 has been improved, the supporting effect is better.
The lower end of the jacking pipe body 1 is of a closed structure, a round rotating base 9 is arranged at the bottom of the jacking pipe body 1, the lower end face of the rotating base 9 is attached to the bottom of the jacking pipe body 1, and the peripheral face of the rotating base is in clearance fit with the inner wall of the jacking pipe body 1; the two opposite sides of the upper part of the rotating base 9 are vertically provided with guide rods 10, the two guide rods 10 are distributed on two sides of the sliding chute, a certain distance is reserved between each guide rod 10 and the jacking cross beam 3, and a certain rotating space is provided for the relative rotation of the guide rods 10. The guide rod 10 penetrates through the jacking pipe 5 and then extends to the opening end of the jacking pipe body 1, and the jacking pipe 5 is in sliding fit with the guide rod 10. An unlocking groove 11 is formed in one side of the tooth socket 8, one side of the unlocking groove 11 is communicated with the tooth socket 8, and the depth of the unlocking groove 11 is gradually reduced from one side close to the tooth socket 8 to the other side, so that the section of the unlocking groove 11 is in a wedge-shaped groove structure; the guide rod 10 is rotated to drive the jacking 5 to rotate around the axial lead of the jacking pipe body 1, so that the retaining plate 7 moves out of one side of the tooth groove 8 and enters the unlocking groove 11.
After the use is accomplished, need to push up support 5 and move back to initial position, could used repeatedly, through set up a rotatable rotating base 9 in jacking pipe body 1, and drive through two guide bars 10, stir guide bar 10, make the top support 5 rotate certain angle along with guide bar 10, at this moment stopping board 7 slides in the unlocking groove 11 of one side by tooth's socket 8, continue to rotate, stopping board 7 is by unlocking groove 11 roll-off, the terminal and the jacking pipe body 1 inner wall contact of stopping board 7 this moment, completely pressed in stopping groove 6, in this way, top support 5 just can the lapse, after sliding to the assigned position, through reverse rotation guide bar 10, make stopping board 7 slide in tooth's socket 8 through unlocking groove 11, stopping board 7 pops out, thereby can used repeatedly.
As an optimization, a height scale layer is arranged on the outer side wall of the jacking pipe body 1, is arranged on one side of the sliding groove 2 and is distributed along the axial direction of the jacking pipe body 1. Therefore, the height of the jacking cross beam 3 can be observed more visually, and the accurate adjustment and positioning are facilitated.
4) Binding and welding bottom ribs and gluten of the opposite steel beams;
5) placing stirrups and lower stirrups cushion blocks;
6) and (5) after the crane is unloaded, supporting the template and pouring concrete.
Compared with the prior art, the invention has the following beneficial effects: to the installation of large-span shaped steel concrete beam, have fine location and support fixed effect, simple structure, the jacking pipe can play fine supporting effect and can fix the top as required and hold in the palm 5 positions, has improved the efficiency of construction, has practiced thrift construction resources.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (8)
1. A construction method of a large-span steel reinforced concrete beam is characterized by comprising the following steps:
1) a plurality of groups of scale guiding rule jacking pipe devices are arranged on a bottom die of the steel reinforced concrete section steel beam to be installed, and two scale guiding rule jacking pipe devices are oppositely arranged to form a group of supporting units;
2) hoisting the section steel beam to a position between the two graduated ruler jacking pipe devices by adopting a crane, and clamping the graduated ruler jacking pipe devices on an upper flange plate of the section steel beam;
3) jacking the scale near-scale jacking pipe device by adopting a jack, and driving the section steel beam to move to an appointed position;
4) binding and welding bottom ribs and gluten of the opposite steel beams;
5) placing stirrups and lower stirrups cushion blocks;
6) and (5) after the crane is unloaded, supporting the template and pouring concrete.
2. The construction method of the large-span steel reinforced concrete beam as claimed in claim 1, wherein the graduated running rule jacking pipe device comprises a jacking pipe body, two sliding grooves are vertically formed in the side walls of two opposite sides of the jacking pipe body, and the sliding grooves penetrate through the upper end of the jacking pipe body; a jacking cross beam is horizontally arranged in the sliding groove, penetrates through the sliding groove and is connected with the sliding groove in a sliding fit manner; a clamping groove is horizontally arranged at one end of the jacking cross beam and penetrates through two opposite sides of the jacking cross beam.
3. The construction method of a large-span steel reinforced concrete beam as claimed in claim 2, wherein a jacking is provided in the jacking pipe body, the jacking is fixedly connected with the jacking cross beam and is in sliding fit with the inner wall of the jacking pipe body; the two sides of the jacking support can be matched with two opposite side walls of the jacking pipe body to form a supporting structure.
4. The construction method of a large-span steel reinforced concrete beam as claimed in claim 3, wherein the jacking is a disc structure, stopping grooves are formed at opposite sides of the jacking, a pin shaft is arranged in the stopping grooves, a stopping plate is rotatably connected to the pin shaft, and the upper end of the stopping plate is rotatably connected to the pin shaft; a torsion spring is further sleeved on the pin shaft, one support arm of the torsion spring is connected with the backstop plate, and the other support arm of the torsion spring is connected with the pin shaft; under the action of the torsion spring, the lower end of the retaining plate can be popped out from the retaining groove; a plurality of tooth grooves are formed in the inner wall of the jacking pipe body from top to bottom at positions corresponding to the backstop plates; the lower end of the retaining plate can extend into the tooth socket after extending out of the retaining groove and is matched with the tooth socket to form supporting and positioning.
5. The construction method of a long-span steel reinforced concrete beam as claimed in claim 4, wherein the tooth grooves are continuously arranged so that the inner wall of the jacking pipe body is in a zigzag structure at a position corresponding to the backstop plate.
6. The construction method of a long-span steel reinforced concrete beam as claimed in claim 5, wherein the lower end of the jacking pipe body is of a closed structure, a circular rotating base is provided at the bottom of the jacking pipe body, the lower end surface of the rotating base is attached to the bottom of the jacking pipe body, and the peripheral surface thereof is in clearance fit with the inner wall of the jacking pipe body; guide rods are vertically arranged on two opposite sides of the upper part of the rotating base, and the two guide rods are distributed on two sides of the sliding chute; the guide rod penetrates through the jacking and then extends to the opening end of the jacking pipe body, and the jacking is in sliding fit with the guide rod.
7. The construction method of a large-span steel reinforced concrete beam as claimed in claim 6, wherein an unlocking groove is provided at one side of the gullet, one side of the unlocking groove is communicated with the gullet, and the depth of the unlocking groove is gradually reduced from one side close to the gullet to the other side, so that the section of the unlocking groove is in a wedge-shaped groove structure; the guide rod is rotated to drive the jacking to rotate around the axis of the jacking pipe body, so that the retaining plate is moved out from one side of the tooth groove and enters the unlocking groove.
8. The construction method of a large-span steel reinforced concrete beam as claimed in claim 7, wherein a height scale layer is provided on an outer side wall of the jacking pipe body, the height scale layer being provided on one side of the runner and distributed along an axial direction of the jacking pipe body.
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| CN202010796209.9A CN111894136B (en) | 2020-08-10 | 2020-08-10 | Construction method of large-span steel reinforced concrete beam |
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| CN202010796209.9A CN111894136B (en) | 2020-08-10 | 2020-08-10 | Construction method of large-span steel reinforced concrete beam |
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| CN111894136B CN111894136B (en) | 2021-09-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776047A (en) * | 2022-04-14 | 2022-07-22 | 中建八局第一建设有限公司 | Steel beam mounting and fixing device and implementation method |
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| CN110984675A (en) * | 2019-12-19 | 2020-04-10 | 吴乾臻 | Pole erecting device for electric power laying and using method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114776047A (en) * | 2022-04-14 | 2022-07-22 | 中建八局第一建设有限公司 | Steel beam mounting and fixing device and implementation method |
| CN114776047B (en) * | 2022-04-14 | 2023-07-07 | 中建八局第一建设有限公司 | Steel beam installation and fixation device and implementation method |
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