CN113246272A - Section beam prefabricating template system based on non-matching beam and prefabricating method - Google Patents
Section beam prefabricating template system based on non-matching beam and prefabricating method Download PDFInfo
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- CN113246272A CN113246272A CN202110677616.2A CN202110677616A CN113246272A CN 113246272 A CN113246272 A CN 113246272A CN 202110677616 A CN202110677616 A CN 202110677616A CN 113246272 A CN113246272 A CN 113246272A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/02—Moulds with adjustable parts specially for modifying at will the dimensions or form of the moulded article
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a section beam prefabricating template system based on a non-matching beam, which comprises a fixed end die, a movable end die, an inner die and a bottom side die, wherein the fixed end die is fixed on the bottom side of the fixed end die; the fixed end die is fixedly arranged, and the movable end die can be driven by the movable adjusting equipment to adjust the spatial position. The template system has small volume and light dead weight, so that the occupied area is saved, the positioning is more convenient and faster, the manufactured section beam can be immediately transferred to a beam storage area without filling a prefabricated template of the next section beam, the working procedure is simpler, and the beam storage can be realized 2 days ahead of time compared with the traditional process.
Description
Technical Field
The present invention relates to the field of segment beam prefabrication. More particularly, the present invention relates to a system and method for prefabricating formwork based on non-matched beam section beam.
Background
At present, the segmental beam is mostly prefabricated by adopting a short-line matching method, the concrete process is that a plurality of pedestals are arranged on a prefabricated field, all pedestals operate simultaneously, all beam sections are poured in a movable shaping template, when pouring is carried out, a fixed template is arranged at one end of the beam section to be poured, the other end of the beam section is a poured previous beam section, so that a matching beam is formed, the splicing precision of adjacent blocks is ensured, after the pouring of the next beam section is completed and preliminarily maintained, the previous section is transported away and stored, and the newly poured beam section is transferred to the position of the previous section. In the existing segmental beam matching prefabrication process, a cast front beam segment is used as a movable end mould of a beam segment to be cast, although close fit between adjacent segments can be ensured, problems can be caused at the same time: (1) the site construction cost is high: the foundation treatment cost and the transfer equipment cost below the pedestal are high; the steam curing kiln has large space and high energy consumption. (2) Is not beneficial to construction organization: the sectional beams in one prefabricated unit (such as a span bridge or a half span bridge) need to be prefabricated in a matching way from roof truss to roof truss according to a certain sequence, the whole production period is long, and construction organization is not facilitated.
Disclosure of Invention
To achieve these objects and other advantages in accordance with the purpose of the invention, a preferred embodiment of the present invention provides a match beam-free segmental beam prefabrication formwork system, including a fixed end formwork, a movable end formwork, an inner formwork and a bottom side formwork;
the fixed end die and the movable end die are positioned at two ends of the bottom side die and spliced with each other to form a built-in space, the inner die extends into the built-in space, and the outer side of the inner die is separated from the inner wall of the built-in space by a certain distance to form a pouring space;
the fixed end die is fixedly arranged, the movable end die can be driven by a movable adjusting device to adjust the spatial position, and two end faces of the fixed end die and the movable end die, which are close to the bottom side die, respectively protrude and sink to form a plurality of adaptive shear keys and shear grooves;
and prestress pipeline positioning holes are reserved on the fixed end die and the movable end die.
According to a preferred embodiment of the invention, the fixed end die is fixed on a fixed frame, the movable end die is fixed on a movable frame through a cantilever, the movable adjusting device drives the movable end die to realize vertical, longitudinal/transverse movement, the length of the cantilever is adjustable, and the inner die is arranged on a prefabricated platform through a support frame;
the rigidity of the fixed end mould is similar to that of the movable end mould, and a stiffening rib is additionally arranged at the position of the movable end mould corresponding to the shear groove.
According to a preferred embodiment of the present invention, the fixed end mold, the movable end mold, the inner mold, and the bottom side mold are all disposed on a prefabrication platform, the fixed frame is fixed on the prefabrication platform, the movable frame is disposed on the prefabrication platform through a movable end mold upright post, the bottom side mold includes side molds on both sides and a bottom mold on the bottom, and the bottom mold is disposed on the prefabrication platform through a bottom mold upright post.
According to a preferred embodiment of the present invention, the movable frame rests on the movable end mold column, the movement adjusting device includes a first movable plate, a second movable plate and a third movable plate, which are sequentially arranged from bottom to top at intervals, the first movable plate can move on the prefabricated platform along the axial direction of the sectional beam, the second movable plate can move on the first movable plate along the transverse direction of the sectional beam, a jack is arranged on the top of the third movable plate to adjust the height of the movable frame, and the rotation of the movable frame can be realized through the elevation difference of the jack.
According to a preferred embodiment of the present invention, the frame further comprises a bottom tension screw and a top tension screw, wherein two ends of the bottom tension screw are respectively and fixedly connected to the bottom of the fixed frame and the bottom of the movable frame, and two ends of the top tension screw are respectively and fixedly connected to the top of the fixed frame and the top of the movable frame;
and coordinate measuring points are arranged on the top surfaces of the fixed end die and the movable end die.
According to a preferred embodiment of the invention, a fixed end die shear key assembly is mounted on one surface of the fixed end die, which is close to the movable end die, through a positioning bolt to form the shear key, the movable end die is provided with a through hole, the through hole is mounted and sealed by a movable end die shear groove assembly, the shear groove is formed on the inner side surface of the movable end die shear groove assembly, and the shear key is matched with the shear groove;
the support frame is connected on the slide way plate, and the slide way plate can move along the prefabricated platform.
Another preferred embodiment of the present invention is a segmental beam prefabrication based on unmatched beams comprising the steps of:
step S1, determining the positions of the shear keys in the fixed end die and the shear grooves in the movable end die according to the design information of the sectional beam to be manufactured, and installing the fixed end die, the movable end die, the bottom die and the side die to form a built-in space with an opening, wherein two ends of the bottom die and the side die are respectively tightly propped against the fixed end die and the movable end die;
step S2, adjusting the position of the movable end mold according to the position of the coordinate measuring point, adjusting the movable end mold to an expected position, and locking the movable end mold and the fixed end mold by using the bottom tensioning screw after the adjustment is finished;
s3, hoisting a reinforcement cage into the built-in space to install the internal mold, retesting the position information of the coordinate measuring points again, and locking the movable end mold and the fixed end mold by using the top tensioning screw after the requirement is met;
and S4, pouring concrete, removing the template after the concrete is steamed, and hoisting and moving the beam section to a modification area or a beam storage area.
The invention at least comprises the following beneficial effects:
1. the section beam prefabricated formwork system is beneficial to construction organization: a bridge can be prefabricated on a plurality of pedestals simultaneously without matching.
2. The segmental beam prefabrication template system is beneficial to improving the segmental beam prefabrication precision (the manufacturing deviation of each segmental beam is accurately controlled, but the error is not transmitted to the subsequent beam segment production), and the segmental beam standardized design production level is promoted.
3. According to the invention, the manufactured section beam can be transferred into the beam storage area without filling a prefabricated template of the next section beam, so that the process is simpler, and the beam storage can be realized 2 days ahead of the traditional process.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a section beam prefabrication template system based on a non-matching beam in the invention.
Fig. 2 is a schematic cross-sectional view of a non-matched beam based sectional beam prefabricated formwork system according to the present invention.
Fig. 3 is a construction schematic diagram of step S1 in the method for prefabricating a segmental beam based on a non-matched beam according to the present invention.
Fig. 4 is a construction schematic diagram of step S2 in the method for prefabricating a segmental beam based on a non-matched beam according to the present invention.
Fig. 5 is a construction schematic diagram of step S3 in the method for prefabricating a segmental beam based on a non-matched beam according to the present invention.
Fig. 6 is a construction schematic diagram of step S4 in the method for prefabricating a segmental beam based on a non-matched beam according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
As shown in fig. 1-6, the prefabricated template system of the segmental beam based on the unmatched beam of the invention comprises a fixed end die 1, a movable end die 2, an inner die 3 and a bottom side die 4, wherein the segmental beam is internally provided with a beam hole which penetrates through the segmental beam; wherein the fixed end die 1 and the movable end die 2 are positioned at two ends of the bottom side die 4, the fixed end die 1 and the movable end die are spliced with each other to form a built-in space, the inner die 3 extends into the built-in space, and the outer side of the inner mold 3 is separated from the inner wall of the built-in space by a certain distance to form a pouring space, the fixed end die 1 is fixedly arranged, the movable end die can realize the adjustment of the spatial position under the driving of the movable adjusting device, in particular, the movable end die 2 is driven by the movable adjusting device 5 to move along the axial direction of the section beam, move along the transverse direction of the section beam and move along the vertical direction, meanwhile, the movable frame can rotate through the elevation difference of the jack, and the fixed end die 1 and the movable end die 2 are respectively protruded and sunken into two end faces of the bottom side die 4 to form a plurality of adaptive shear keys 7 and shear grooves 6.
In the above embodiment, for any two adjacent segmental beams of the same span segment, according to the prefabrication sequence, the size information of the fixed end die and the prestressed pipe positioning hole information corresponding to the previous segmental beam are matched with the size information of the movable end die and the prestressed pipe positioning hole information corresponding to the next segmental beam. The method is characterized in that a matched beam in the traditional construction process is not needed, a movable end die 2, a fixed end die 1, a bottom side die 4 and an inner die 3 are used for casting the segmental beam together, in order to enable the seamless matching connection of the front segmental beam and the rear segmental beam obtained by precast casting to be realized and avoid manual errors, a plurality of adaptive shear keys 7 and adaptive shear grooves 6 are formed by respectively protruding and sinking two end surfaces of the fixed end die 1 and the movable end die 2 close to the bottom side die 4, and the segmental beam obtained by casting can form adaptive convex shear keys and concave shear grooves, so that the accurate splicing of the two segmental beams can be well and accurately realized.
Utilize fixed frame 8 right fixed end mould 1 is fixed, utilizes movable frame 9 right movable end mould 2 is fixed, and is right when needs the activity end mould 2 carries out position control, only need right movable frame 9 adjust can, convenient and fast, it is more firm moreover. In order to adapt to the change of the length of the prefabricated section, the cantilever 10 is required to extend out of a certain length, the length of the cantilever is adjustable, and the adaptation range is wider. The fixed end die 1 is fixed on a fixed frame 8, the movable end die 2 is fixed on a movable frame 9 through a cantilever 10, the movable adjusting device 5 drives the movable end die 2 to vertically and longitudinally move or transversely move, the length of the cantilever 10 is adjustable, and the inner die 3 is arranged on the prefabricated platform through a support frame 23.
Considering convenient construction, the whole prefabricated formwork system is convenient to integrally move as a whole, the fixed end formwork 1, the movable end formwork 2, the inner formwork 3 and the bottom side formwork 4 are all arranged on the prefabricated platform 11, when the whole prefabricated formwork system needs to be moved, only the prefabricated platform 11 needs to be moved, the operation is simple and convenient, the fixed framework 8 is fixed on the prefabricated platform 11, the movable framework 9 is arranged on the prefabricated platform 11 through the movable end formwork upright post 12, the bottom side formwork 4 comprises the side formworks at two sides and a bottom formwork at the bottom, and the bottom formwork is arranged on the prefabricated platform 11 through the bottom formwork upright post 13.
The rigidity of the fixed frame and the movable frame needs to be similar and sufficiently large. The local rigidity of the shear key position of the movable end mould is reduced, and a stiffening rib needs to be additionally arranged.
In order to move the movable frame 9, realize multi-directional and multi-angle adjustment, and in order to enable the movable frame 9 to stably perform subsequent concrete pouring work after the position adjustment is completed, the movable frame 9 is placed on the movable end mold upright post 12 without being fixedly connected but only placed, the movable adjusting device 5 is positioned below the movable frame 9, the movable adjusting device 5 does not interfere with the movable end mold upright post 12, when the adjustment is needed, the position of the movable frame 9 is adjusted by using the movable adjusting device 5, after the adjustment is completed, the movable frame 9 is fixedly supported by using the movable end mold upright post 12, and a structure of the movable adjusting device 5 is specifically provided below, and the structure comprises first movable plates 51, a plurality of movable plates 51 and a plurality of movable plates 51 which are sequentially arranged from bottom to top at intervals, A second movable plate 52 and a third movable plate 53, wherein the first movable plate 51 can move on the prefabricated platform 11 along the axial direction of the section beam, the second movable plate 52 can move on the first movable plate 51 along the transverse direction of the section beam, a jack 11 is arranged on the top of the third movable plate 53 to adjust the height of the movable frame 9, and meanwhile, the rotation of the movable frame can be realized through the elevation difference of the jack.
And consider that all templates are all bulky, if take place a little removal in the work progress, can influence subsequent construction, later stage adjustment is also inconvenient moreover, consequently carried out following design, still set up bottom stretch-draw screw 14 and top stretch-draw screw 15, bottom stretch-draw screw 14 both ends respectively fixed connection in fixed frame fixed end mould bottom, top stretch-draw screw 15 both ends respectively fixed connection in fixed frame top prevents to water when the concrete, and the lateral pressure of concrete leads to fixed end mould and activity end mould to take place relative deformation.
In another embodiment, the fixed end die 2 and the movable end die are provided with a coordinate measuring device 16 on the top surface.
In another embodiment, a fixed end die shear key assembly part 18 is installed on one side, close to the movable end die 2, of the fixed end die 1 through a positioning bolt 17 to form the shear key 7, a through hole is formed in the movable end die 2, the through hole is installed and sealed by a movable end die shear groove assembly part 19, the shear groove 6 is formed on the inner side surface of the movable end die shear groove assembly part 19, and the shear key 7 is matched with the shear groove 6.
In a preferred embodiment of the present invention, the support frame 23 is connected to the slide plate 20, and the slide plate 20 is movable along the prefabrication platform.
Another preferred embodiment of the present invention is a segmental beam prefabrication based on unmatched beams comprising the steps of:
step S1, determining the positions of the shear keys 7 in the fixed end die 1 and the shear grooves 6 in the movable end die 2 according to the design information of the sectional beam to be manufactured, and installing the fixed end die 1, the movable end die 2, the bottom die and the side dies to form an open built-in space, wherein two ends of the bottom die and the side dies are respectively tightly propped against the fixed end die and the movable end die;
step S2, adjusting the position of the movable end mold according to the position of the coordinate measuring point, adjusting the movable end mold to an expected position, and locking the movable end mold and the fixed end mold by using the bottom tensioning screw after the adjustment is finished, so that the movable end mold and the fixed end mold are prevented from shifting in the installation and concrete pouring processes, and the prefabricated section beams cannot be well matched and butted;
step S3, hanging the reinforcement cage 21 into the built-in space, installing the internal mold, retesting the position information of the coordinate measuring points, and locking the movable end mold and the fixed end mold by using the top tensioning screw after the requirement is met;
and S4, pouring concrete, removing the template after the concrete is steamed, and hoisting and moving the beam section to a modification area or a beam storage area.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (7)
1. A segmental beam prefabrication template system based on a non-matching beam is characterized by comprising a fixed end die, a movable end die, an inner die and a bottom side die;
the fixed end die and the movable end die are positioned at two ends of the bottom side die and spliced with each other to form a built-in space, the inner die extends into the built-in space, and the outer side of the inner die is separated from the inner wall of the built-in space by a certain distance to form a pouring space;
the fixed end die is fixedly arranged, the movable end die can realize the adjustment of the spatial position under the driving of a movable adjusting device, and two end surfaces of the fixed end die and the movable end die, which are close to the bottom side die, are respectively protruded and sunken to form a plurality of adaptive shear keys and shear grooves;
and prestress pipeline positioning holes are reserved on the fixed end die and the movable end die.
2. The matchless beam based segmented beam prefabrication template system of claim 1,
the fixed end die is fixed on the fixed frame, the movable end die is fixed on the movable frame through a cantilever, the movable adjusting equipment drives the movable end die to realize vertical, longitudinal and transverse movement, the length of the cantilever is adjustable, and the inner die is arranged on the prefabricated platform through a support frame;
the rigidity of the fixed end mould is similar to that of the movable end mould, and a stiffening rib is additionally arranged at the position of the movable end mould corresponding to the shear groove.
3. The matchless beam based segmented beam prefabrication formwork system of claim 2,
the utility model discloses a prefabricated platform, including prefabricated platform, fixed end mould, activity end mould, centre form and bottom side mould, fixed frame fixes on the prefabricated platform, movable frame is in through activity end mould stand setting on the prefabricated platform, the bottom side mould includes the side mould of both sides and the die block of bottom, the die block passes through the die block stand setting and is in on the prefabricated platform.
4. The matchless beam based segmented beam prefabrication template system of claim 1,
the movable frame is placed on the movable end die stand column, the movable adjusting device comprises a first movable plate, a second movable plate and a third movable plate which are sequentially arranged from bottom to top at intervals, the first movable plate can move on the prefabricated platform along the axial direction of the section beam, the second movable plate can move on the first movable plate along the transverse direction of the section beam, a jack is arranged at the top of the third movable plate to adjust the height of the movable frame, and meanwhile, the movable frame can rotate through the elevation difference of the jack.
5. The matchless beam based segmented beam prefabrication formwork system of claim 2,
the tensioning device also comprises a bottom tensioning screw and a top tensioning screw, wherein two ends of the bottom tensioning screw are respectively and fixedly connected to the bottoms of the fixed frame and the movable frame, and two ends of the top tensioning screw are respectively and fixedly connected to the tops of the fixed frame and the movable frame;
and coordinate measuring points are arranged on the top surfaces of the fixed end die and the movable end die.
6. The matchless beam based segmented beam prefabrication formwork system of claim 2,
one surface of the fixed end die, which is close to the movable end die, is provided with a fixed end die shear key assembly part through a positioning bolt to form the shear key, the movable end die is provided with a through hole, the through hole is installed and sealed by a movable end die shear groove assembly part, the shear groove is formed on the inner side surface of the movable end die shear groove assembly part, and the shear key is matched with the shear groove;
the support frame is connected on the slide way plate, and the slide way plate can move along the prefabricated platform.
7. A segmental beam prefabricating method based on a non-matching beam is characterized by comprising the following steps:
step S1, determining the positions of the shear keys in the fixed end die and the shear grooves in the movable end die according to the design information of the sectional beam to be manufactured, and installing the fixed end die, the movable end die, the bottom die and the side die to form a built-in space with an opening, wherein two ends of the bottom die and the side die are respectively tightly propped against the fixed end die and the movable end die;
step S2, adjusting the position of the movable end mold according to the position of the coordinate measuring point, adjusting the movable end mold to an expected position, and locking the movable end mold and the fixed end mold by using the bottom tensioning screw after the adjustment is finished;
s3, hanging a reinforcement cage into the built-in space, installing the internal mold, retesting the position information of the coordinate measuring points, and locking the movable end mold and the fixed end mold by using the top tensioning screw rod after the requirement is met;
and S4, pouring concrete, removing the template after the concrete is steamed, and hoisting and moving the beam section to a modification area or a beam storage area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110677616.2A CN113246272A (en) | 2021-06-18 | 2021-06-18 | Section beam prefabricating template system based on non-matching beam and prefabricating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110677616.2A CN113246272A (en) | 2021-06-18 | 2021-06-18 | Section beam prefabricating template system based on non-matching beam and prefabricating method |
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| CN113246272A true CN113246272A (en) | 2021-08-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113635435A (en) * | 2021-08-19 | 2021-11-12 | 中铁大桥局第九工程有限公司 | Method for prefabricating non-fixed-end die matching of section beam |
| CN114454310A (en) * | 2022-01-04 | 2022-05-10 | 中交第二航务工程局有限公司 | Matching manufacturing method for section beam prefabricated end formwork panel based on non-matching beam |
| CN114603683A (en) * | 2022-01-14 | 2022-06-10 | 中交第二航务工程局有限公司 | Method for quickly prefabricating concrete segment box girder |
| CN115214009A (en) * | 2022-07-21 | 2022-10-21 | 中交第二航务工程局有限公司 | Segment beam prefabricating method |
-
2021
- 2021-06-18 CN CN202110677616.2A patent/CN113246272A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113635435A (en) * | 2021-08-19 | 2021-11-12 | 中铁大桥局第九工程有限公司 | Method for prefabricating non-fixed-end die matching of section beam |
| CN114454310A (en) * | 2022-01-04 | 2022-05-10 | 中交第二航务工程局有限公司 | Matching manufacturing method for section beam prefabricated end formwork panel based on non-matching beam |
| CN114603683A (en) * | 2022-01-14 | 2022-06-10 | 中交第二航务工程局有限公司 | Method for quickly prefabricating concrete segment box girder |
| CN115214009A (en) * | 2022-07-21 | 2022-10-21 | 中交第二航务工程局有限公司 | Segment beam prefabricating method |
| CN115214009B (en) * | 2022-07-21 | 2023-04-25 | 中交第二航务工程局有限公司 | Segment beam prefabrication method |
| WO2024016689A1 (en) * | 2022-07-21 | 2024-01-25 | 中交第二航务工程局有限公司 | Segmental beam prefabrication method |
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