CN109812082B - Bridge segment prefabricating factory and segment prefabricating process thereof - Google Patents
Bridge segment prefabricating factory and segment prefabricating process thereof Download PDFInfo
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Abstract
The invention relates to a bridge segment prefabricating factory and a segment prefabricating process thereof. The bridge segment prefabrication plant comprises: the prefabricated production workshop, the reinforcing bar workshop, the concrete mill and laboratory, the section decoration health preserving district, the beam storage district, the warehouse area, the boiler room, office area and living area and the teamwork living area of working in coordination, each regional rational arrangement, the functional area is clear and definite, combines the design of production trend, standardizes, the flow with the prefabricated production technology flow of section, realizes high-efficient, ripe section production line production, maximize the prefabricated productivity of section to satisfy high quality, high strength production work.
Description
Technical Field
The invention relates to a bridge segment prefabrication factory for producing bridge segments by applying a short-line method segment prefabrication and assembling technology and a segment prefabrication process thereof.
Background
The short-line method segment prefabrication and assembly technology is a construction technology which divides a bridge structure into a plurality of segments, transports each segment to the site after the fabrication of each segment in a prefabrication plant, and carries out the site splicing and erection by means of cementing or concrete wet joint and applying prestress. The short-line method segment prefabrication and assembly technology is used as one of bridge green construction core technologies, and has the following advantages: 1) high safety, excellent quality and high durability, 2) high construction speed, 3) strong adaptability of construction methods, 4) small impact on natural and social environments and the like.
With the wide application of the segment prefabrication and assembly technology of the short-line method, domestic engineering applying the technology gradually faces more and more challenges, for example, the segment prefabrication task amount is large, the construction period is short, the precision requirement is high, and the high prefabrication production requirement of the green construction segment upgraded industrially cannot be met by the disordered, scattered and unregulated production mode of the traditional factory, so that the prefabrication factory which can meet the requirement of the short-line method prefabricated segment production, can realize efficient and mature segment production line production and meets the requirement of the industrial segment prefabrication production is very important.
Disclosure of Invention
The invention aims to provide a bridge segment prefabrication plant and a segment prefabrication process thereof, wherein the prefabrication plant is designed based on a short-line method prefabricated segment production process flow, all areas are reasonably arranged, functional areas are clear, the design of a production line and the design of a logistics path are combined, the segment prefabrication production process flow is standardized, normalized, streamlined and industrialized, efficient and mature segment production line production is realized, and segment prefabrication capacity is maximized, so that high-quality and high-strength production work is met.
The technical problem to be solved by the invention is realized by adopting the technical scheme of the following bridge segment prefabricating factory:
preferably, the bridge section prefabricating factory comprises a prefabricating production workshop, a steel bar processing workshop, a concrete factory, a section modification curing area, a section beam storage area, a boiler room, an office area, a living area and a cooperative team living area.
Preferably, the prefabrication workshop comprises a prefabrication production line and a buffer area, wherein the prefabrication production line consists of a plurality of prefabrication pedestals, a template storage area, a steel bar jig frame, storage areas at two ends of the production line and a measuring tower group, and each production line is provided with a bridge crane and is mainly responsible for hoisting and transferring components such as a steel bar cage, a template and the like; the prefabrication production lines can be divided according to different segment types of production, and each production line is provided with a channel for logistics transportation; preferably, the prefabricated production line is provided with measuring tower groups, each two measuring tower groups are arranged in one group, one tower is used as a measuring tower, the other tower is used as a target tower, the two towers are mutually in sight, the periphery of the tower body of the measuring tower group is not contacted with any other objects, including stairs for people to go up and down and an operation platform, and in order to provide a good environmental condition for measurement, the top of the measuring tower group can be provided with a rain-proof and sun-proof shed by adopting color steel tiles; preferably, a raw material inlet and a finished product beam outlet are respectively arranged in the prefabrication workshop according to the flow direction of the production line, a buffer area is arranged at the inlet and the outlet of each production line, and heat preservation measures are taken; preferably, the buffer zone is of a double-layer structure, the first layer is used for passing vehicles, and the second layer is used as an office zone and sundry storage.
Preferably, the steel bar processing workshop is arranged close to a raw material inlet of the prefabricated production workshop and comprises a steel bar processing area and a material storage area; the steel bar processing area is responsible for processing semi-finished products such as steel bar blanking, bending and the like, and is formed by transversely arranging steel bar processing machines with various types and functions, wherein the steel bar processing machines comprise a steel bar shearing machine, a steel bar hoop bending machine, a small cutting machine, a small bending machine and the like; the steel bar processing area and the material storage area are longitudinally arranged in parallel in a steel bar processing workshop and are separated by a vehicle transportation channel.
Preferably, the concrete works are arranged close to the raw material inlet of the prefabricated production workshop and comprise a concrete mixing plant, a storage bin, a test room and an office building, wherein the storage bin, the test room and the office building are arranged on one side of the concrete mixing plant in a centralized mode.
Preferably, the segment modification and health maintenance area is close to the prefabrication production workshop and is arranged outdoors and close to the finished beam outlet of the prefabrication production workshop, the modification area and the segment beam storage area are arranged in the area, the modification and health maintenance pedestal is used for operations such as segment matching surface renovation, concrete surface renovation and prestressed duct inspection, and the segments are continuously maintained on the platform at the same time until the maintenance period meeting the design requirement is reached, and then the segment is transferred to the segment beam storage area for storage.
Preferably, the segment beam storage area is arranged outdoors and is close to the modification curing area, is designed into a double-layer or multi-layer beam storage area and is used for storing the prefabricated segments and meeting the beam storage period of the design requirement; preferably, a rail suitable for a portal crane (wheel rail type) is arranged to span the whole section beam storage area; preferably, the segment beam storage area is divided into three or more sheet areas which are transversely distributed in parallel, and each sheet area is provided with beam storage areas of different types of segments, so that the transportation efficiency of each type of segment can be maximized; preferably, two gantry cranes are arranged on two sides of the track of each plate area and are used for transporting and hoisting the section beams; preferably, around the outside of each beam storage area is a vehicle transportation channel.
Preferably, the storage area is arranged close to a steel bar processing workshop and a prefabrication production workshop and is responsible for storing raw materials except concrete raw materials, such as steel bars, anchors, corrugated pipes, prestressed steel strands, tools and the like.
Preferably, the boiler room is arranged close to a prefabricated production workshop, and a steam heating pipe network arranged in a prefabricated plant area connects the boiler room with the prefabricated workshop and the modification and curing area for segmental steam curing.
Preferably, the office area, the living area and the cooperative team living area are arranged far away from the production area and are independent from the production area, and the traffic paths of the office area, the living area and the production area are ensured not to interfere with each other.
Preferably, the pipelines involved in the prefabrication plant, such as power, water supply and water drainage, are collectively considered to lay the route.
The technical problem to be solved by the invention is realized by adopting the following segment prefabricating process technical scheme:
preferably, the bridge sections are prefabricated by adopting a short-line matching method industrial flow production line, and the production line process is designed according to a short-line method section prefabricating process and mainly comprises the steps of steel bar processing, concrete proportioning, steel bar binding, steel bar hoisting, section pouring, section steam curing, section matching, section modification and section storage.
Preferably, the processing of the raw materials comprises steel bar processing and concrete mixing, the steel bars are conveyed to the prefabrication workshop along the raw material conveying channel outside the workshop after being processed in the steel bar processing workshop and enter from the raw material inlet of the prefabrication workshop, and the concrete enters into the production workshop from the raw material inlet of the prefabrication workshop along the raw material conveying channel outside the workshop after being mixed in the concrete factory; binding reinforcing steel bars, hoisting the reinforcing steel bars, pouring sections, steaming the sections, matching the sections sequentially in a prefabrication workshop according to a production sequence, transporting concrete in the prefabrication workshop through a middle road, transporting section beams through outgoing beam transport channels on two sides, transporting the reinforcing steel bars through a top-hanging system, and forming systems which are mutually independent; the prefabricated section beam is driven out of the prefabrication workshop from a finished product beam outlet along an in-workshop out-beam conveying channel through a longitudinal moving trolley and is conveyed to a section modification curing area along an out-workshop out-beam conveying channel; conveying the modified section beams to a section beam storage area along a beam storage channel for storage, and after the section beams meet the storage period, taking out the section beams from a prefabrication plant along a ring plant road outside the section beam storage area and conveying the section beams to a beam erecting site; preferably, the traffic channels of the office area and the living area are mainly positioned on the ring factory and are not interfered with the transportation channels produced in the factory.
The invention has the beneficial effects that:
the bridge segment prefabrication plant provided by the invention is reasonable in arrangement, each functional area is clear, the low efficiency, the process interference and the space waste caused by unreasonable arrangement are avoided, the efficient utilization of the space can ensure the maximum capacity, and the production requirements of high quality and high strength of the prefabrication production of the industrial green construction segments are met. The prefabricated workshop and the steel bar processing workshop are reasonable in design, wind and snow interference can be avoided in indoor production operation, normal operation of production work is guaranteed, and all-weather 24-hour operation requirements are met. In addition, the buffer areas arranged at the entrances and exits of the prefabricated production workshop are beneficial to construction in winter and concrete steam curing, and the construction speed in winter is accelerated.
The transportation paths of the raw material transportation channel of the bridge segment prefabrication plant, the production channel in the workshop, the beam outlet transportation channel, the beam storage channel, the ring plant path and the like are independent and do not interfere with each other, and the efficient transportation path can improve the working efficiency of the beam plant.
Drawings
FIG. 1 is a general layout of a prefabrication plant according to the invention;
FIG. 2 is a schematic cross-sectional view of a prefabrication plant according to the invention;
FIG. 3 is a schematic view of the production line design of the prefabrication plant of the present invention;
fig. 4 is a schematic view of the design of the logistics transportation path of the prefabrication plant.
Detailed Description
The invention is further described in detail below with reference to the drawings and examples.
Referring to the attached drawing 1, the bridge segment prefabricating factory 1 provided by the invention comprises a prefabricating production workshop 2, a steel bar processing workshop 3, a concrete factory 4, a segment modification curing area 5, a segment girder storage area 6, a storage area 7, a boiler house 8, an office area and living area 9 and a cooperative team living area 10.
Referring to fig. 1 and fig. 2, in order to meet all-weather production of segments and provide a relatively stable constant temperature space for segment concrete construction and maintenance, a segment production area of the prefabrication plant is arranged in a permanent or temporary workshop, the prefabrication production workshop 2 comprises a prefabrication production line 21 and a buffer area 22, wherein the prefabrication production line 21 comprises a plurality of prefabrication pedestals 211, a template storage area 212, a steel bar jig 213, storage areas 214 at two ends of the production line and a measuring tower group 215, and each production line of the workshop is provided with a bridge crane 216 which is mainly responsible for hoisting and transferring components such as a steel bar cage, a template and the like; the prefabrication production lines 21 can be divided according to different segment types of production, and each production line is provided with a channel for respective logistics transportation; the prefabricated production line is provided with measuring tower groups 215, each two measuring tower groups are arranged in one group, one tower is used as a measuring tower, the other tower is used as a target tower, the two towers are mutually in sight, the periphery of the tower body of the measuring tower group is not contacted with any other objects, including stairs for people to go up and down and an operation platform, and in order to provide a good environmental condition for measurement, the top of the measuring tower group can adopt color steel tiles to build a rainproof and sunscreen shed; the prefabricating production workshop 2 is respectively provided with a raw material inlet 23 and a finished product beam outlet 24 according to the flow direction of a production line, a buffer area 22 is arranged at the inlet and the outlet of each production line, and heat preservation measures are taken; the buffer area 22 is a double-layer structure, the first layer is used for the passing of vehicles, and the second layer is used as an office area and sundry storage.
Referring to fig. 1, a reinforcing bar processing workshop 3 is arranged near a prefabricated workshop raw material inlet 23, and the reinforcing bar processing workshop 3 comprises a reinforcing bar processing area 31 and a material storage area 32; the steel bar processing area 31 is responsible for processing semi-finished products such as steel bar blanking, bending and the like, and is formed by transversely arranging steel bar processing machines with various types and functions, including a steel bar shearing machine, a steel bar hoop bending machine, a small cutting machine, a small bending machine and the like; the reinforcing bar processing area 31 and the material storage area 32 are longitudinally arranged in parallel in a reinforcing bar processing workshop and are separated by a vehicle transportation channel.
The concrete factory 4 is arranged close to the raw material inlet 23 of the prefabricated production workshop and comprises a concrete mixing plant 41, a stock bin 42, a laboratory 43 and an office building 44, wherein the stock bin 42, the laboratory 43 and the office building 44 are arranged on one side of the concrete mixing plant 41 in a centralized manner.
The segment modification and health-preserving area 5 is close to the prefabrication workshop 2, is arranged outdoors and is close to the finished beam outlet 24 of the prefabrication workshop, a modification and health-preserving pedestal 51 is arranged in the area and is used for operations such as segment matching surface renovation, concrete surface renovation, prestressed duct inspection and the like, and the segments are continuously maintained on the pedestal until the maintenance period meeting the design requirement is reached, and then the segments are transferred to the segment beam storage area 6 for storage.
The section beam storage area 6 is arranged outdoors and is close to the modification curing area 5, is designed into a double-layer or multi-layer beam storage area and is used for storing prefabricated sections and meeting the beam storage period of design requirements, and a rail 61 suitable for a portal crane (wheel rail type) is arranged to span the whole section beam storage area 6; the segment beam storage area 6 is divided into three or more sheet areas 62 which are transversely distributed in parallel, and each sheet area 62 is provided with beam storage areas of different types of segments, so that the transportation efficiency of each type of segment can be maximized; two gantry cranes 621 are arranged on two sides of the track of each plate area 62 and are used for transporting and hoisting the section beams; and a vehicle transportation channel is arranged around the outer side of each beam storage plate area.
The storage area 7 is arranged close to the steel bar processing workshop 3 and the prefabrication production workshop 2 and is responsible for storing raw materials except concrete raw materials, such as steel bars, anchors, corrugated pipes, prestressed steel strands, tools and the like.
The boiler room 8 is arranged close to the prefabricated production workshop 2, and a steam heating power pipe network arranged in the prefabricated plant area connects the boiler room 8 with the prefabricated production workshop 2 and the section modification curing area 5 for section steam curing.
The office area, the living area 9 and the cooperative team living area 10 are arranged far away from the production area, are independent from the production area and ensure that the traffic paths of the office area, the living area and the production area are not interfered with each other.
The related pipelines, power, water supply and water drainage in the factory are prefabricated, and laying routes are considered in a centralized manner.
Referring to the attached figure 3, the bridge sections are prefabricated by adopting a short-line matching method industrial flow production line, the production line process is designed according to a short-line method section prefabrication process, the production line process mainly comprises steel bar processing, steel bar cage binding, steel bar cage hoisting, a high-performance concrete proportioning test, concrete mixing, section pouring, section maintenance, accurate measurement, section matching, section hoisting, section modification and section storage, and the sections reaching the beam storage period are finally transported to an erection site by a prefabrication factory for assembly and erection.
Referring to the attached figure 4, the processing of the raw materials comprises processing of reinforcing steel bars and mixing of concrete, the reinforcing steel bars are conveyed to a prefabrication workshop along a raw material conveying channel 11 outside the workshop after being processed in a reinforcing steel bar processing workshop 3 and enter from a raw material inlet 23 of the prefabrication workshop, and the concrete enters into the prefabrication workshop 2 from the raw material inlet 23 of the prefabrication workshop along the raw material conveying channel 11 outside the workshop after being mixed in a concrete factory; the core of the whole prefabrication plant 1 is a prefabrication production workshop 2, raw materials such as reinforcing steel bars and concrete are integrated together in the prefabrication production workshop 2, finished beams are formed through prefabrication, reinforcement cage binding, reinforcement cage hoisting, segment pouring, segment maintenance, accurate measurement, segment matching and segment hoisting are sequentially completed in the prefabrication production workshop according to the production sequence, transport paths 12 in the workshop are not crossed with each other, lines are clear, concrete in the prefabrication production workshop 2 is transported through a middle road 121, segment beams are transported through outgoing beam transport channels 122 on two sides, reinforcing steel bars are transported through an overhead crane system 123 and are independent from each other, and each system is formed; the prefabricated section beam is driven out of the prefabricated production workshop 2 from the finished product beam outlet 24 along the in-workshop beam outlet transport channel 122 through the longitudinal moving trolley, and is transported to the section modification curing area 5 along the out-workshop beam outlet transport channel 122; the modified section beams are transported to the section beam storage area 6 along the beam storage channel 13 for storage, and after the section beams meet the storage period, the section beams are driven out of the prefabrication plant 1 along the ring plant path 14 outside the section beam storage area 6 and transported to a beam erecting site; the traffic channels of the office area and the living area are mainly positioned on the ring plant road 14 and do not interfere with the production transportation channels in the plant area.
Claims (7)
1. A segment prefabrication process for a bridge segment prefabrication plant, the bridge segment prefabrication plant comprising: prefabricated workshop (2), reinforcing bar processing workshop (3), concrete factory (4), section decoration health preserving area (5), section beam storage area (6), storage area (7), boiler room (8), office area and living area (9) and teamwork living area (10) in coordination, prefabricated workshop (2) are located prefabricated factory central point and put, reinforcing bar processing workshop (3) and concrete factory (4) all are close to prefabricated workshop raw and other materials entry (23) and arrange, the route that gets into prefabricated workshop (2) from reinforcing bar processing workshop (3) and concrete factory (4) is the special transportation route of raw and other materials, section decoration health preserving area (5) arrange outdoor and be close to prefabricated workshop finished product roof beam export (24) and arrange, section beam storage area (6) arrange outdoor and next to section decoration health preserving area (5), export to section decoration health preserving area (5) to section beam storage area (6) from prefabricated workshop (2) are the special transportation of finished product roof beam A path;
the processing of the raw materials comprises the processing of reinforcing steel bars and the mixing of concrete, after the processing of the reinforcing steel bars is completed in a reinforcing steel bar processing workshop (3), the reinforcing steel bars are transported to a prefabrication workshop (2) along a raw material transportation channel (11) outside the workshop and enter from a raw material inlet (23) of the prefabrication workshop, and after the mixing of the concrete is completed in a concrete factory (4), the concrete also enters the prefabrication workshop (2) from the raw material inlet (23) of the prefabrication workshop along the raw material transportation channel (11) outside the workshop; the core of the whole prefabricating factory (1) is a prefabricating production workshop (2), the prefabricating production workshop (2) integrates the raw materials of the steel bars or the concrete, finished beams are formed through prefabrication, reinforcement cage binding, reinforcement cage hoisting, segment pouring, segment maintenance, accurate measurement, segment matching and segment hoisting are sequentially completed in a prefabrication workshop (2) according to a production sequence, transport paths (12) in the workshop are not crossed, lines are clear, concrete in the prefabrication workshop (2) is transported through an intermediate road (121), segment beams are transported through beam outlet transport channels (122) on two sides, steel bars are transported through a top hoisting system (123), the prefabricated segment beams are driven out of the prefabrication workshop (2) from a finished beam outlet (24) along the beam outlet transport channels (122) in the workshop through a longitudinal moving trolley, and is transported to the section modification curing area (5) along a workshop outer beam transportation channel (122); the modified section beams are transported to a section beam storage area (6) along a beam storage channel (13) for storage, and after the section beams meet the storage period, the section beams are driven out of the prefabrication plant (1) along a ring plant road (14) on the outer side of the section beam storage area (6) and transported to a beam erecting site; the traffic passage of the office area and the living area is positioned on the ring factory road (14);
the prefabrication production workshop (2) comprises prefabrication production lines (21) and a buffer area (22), wherein the prefabrication production lines (21) comprise prefabrication bases (211), template storage areas (212), steel bar moulding beds (213), storage areas (214) at two ends of the production lines and measuring tower groups (215), each production line of the workshop is provided with a bridge crane (216), and the bridge cranes (216) are responsible for hoisting and transferring steel bar cages and template components; the prefabrication production lines (21) are divided according to different segment types of production, and each production line is provided with a channel for respective logistics transportation; the measuring tower groups (215) are arranged into two groups, one tower is used as a measuring tower, the other tower is used as a target tower, the two towers are mutually in sight, the periphery of the tower body of the measuring tower group is not contacted with any other object, and the top of the measuring tower group adopts color steel tiles to set up a rainproof and sunscreen shed; a raw material inlet (23) and a finished product beam outlet (24) are respectively arranged in the prefabrication workshop (2) according to the flow direction of a production line, a buffer area (22) is arranged at the inlet and the outlet of each production line, and heat preservation measures are taken; the buffer area (22) is of a double-layer structure, the first layer is used for the passing of vehicles, and the second layer is used as an office area and sundry storage;
the section beam storage area (6) is arranged outdoors and is close to the section modification curing area (5), is designed into a double-layer or multi-layer beam storage area and is used for storing prefabricated sections and meeting the beam storage period of design requirements, and a track (61) suitable for a portal crane is arranged to stretch across the whole section beam storage area (6); the segment beam storage area (6) is divided into three or more sheet areas (62) which are transversely distributed in parallel, and each sheet area (62) is provided with beam storage areas of different types of segments, so that the transportation efficiency of each type of segment can be maximized; two gantry cranes (621) are arranged on two sides of the track of each plate area (62) and are used for transporting and hoisting the section beams; and a vehicle transportation channel is arranged around the outer side of each beam storage plate area.
2. Segment prefabrication process of a bridge segment prefabrication plant according to claim 1, characterised in that a steel reinforcement processing workshop (3) is arranged close to the prefabrication production workshop raw material entrance (23), the steel reinforcement processing workshop (3) comprising a steel reinforcement processing area (31) and a material storage area (32); the steel bar processing area (31) is responsible for blanking steel bars and processing bent semi-finished products, is formed by transversely arranging steel bar processing machines with various types and functions, and comprises a steel bar shearing machine, a steel bar hoop bending machine, a small cutting machine and a small bending machine; the reinforcing steel bar processing area (31) and the material storage area (32) are longitudinally arranged in parallel in a reinforcing steel bar processing workshop and are separated by a vehicle transportation channel.
3. Segment prefabrication process of a bridge segment prefabrication plant according to claim 1, characterised in that the concrete plant (4) is arranged close to the prefabrication workshop raw material entrance (23), comprising a concrete batching plant (41), a silo (42), a laboratory (43) and an office building (44), the silo (42), the laboratory (43) and the office building (44) being arranged centrally on one side of the concrete batching plant (41).
4. Segment prefabrication process in a bridge segment prefabrication plant according to claim 1, characterised in that a segment modification curing area (5) is arranged in the immediate vicinity of the prefabrication workshop (2) outdoors and close to the finished beam outlet (24) of the prefabrication workshop, and a modification curing platform (51) is arranged in the area of the segment modification curing area (5) for segment matching surface finishing, concrete surface finishing and prestressed duct inspection work, while the segments are maintained on the platform continuously until reaching the required design maintenance period and then transferred to the segment beam storage area (6) for storage.
5. The segment prefabrication process of a bridge segment prefabrication plant according to claim 1, characterized in that a storage area (7) is arranged adjacent to the steel bar processing workshop (3) and the prefabrication production workshop (2) and is responsible for the storage of raw materials other than concrete raw materials throughout the field, the raw materials including steel bars, anchorage devices, corrugated pipes, prestressed steel strands and tools.
6. The section prefabrication process of a bridge section prefabrication plant according to claim 1, wherein a boiler room (8) is arranged adjacent to the prefabrication production workshop (2), and a steam heat pipe network arranged in the prefabrication plant area connects the boiler room (8) with the prefabrication production workshop (2) and the section modification curing area (5) for section steam curing.
7. The segment prefabrication process of a bridge segment prefabrication plant according to claim 1, characterized in that the office area and living area (9), the teamwork living area (10) are arranged far away from the production area, are independent from the production area, and ensure that the traffic paths of the office area, living area and production area do not interfere with each other.
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| CN110469161A (en) * | 2019-08-14 | 2019-11-19 | 安徽巢湖路桥建设集团有限公司 | For the prefabricated factory of bridge construction and its construction method |
| CN110566001A (en) * | 2019-09-18 | 2019-12-13 | 四川公路桥梁建设集团有限公司 | construction method for constructing prefabricating plant by utilizing mainline roadbed at high speed based on mountainous area |
| CN111571800A (en) * | 2020-06-04 | 2020-08-25 | 上海建工四建集团有限公司 | Site functional layout structure of prefabricated pier prefabricated factory and design method |
| CN111941626A (en) * | 2020-08-01 | 2020-11-17 | 中电建成都混凝土制品有限公司 | Design method of environment-friendly intelligent production system for concrete prefabricated part |
| CN112144418A (en) * | 2020-10-14 | 2020-12-29 | 河南省交通规划设计研究院股份有限公司 | Rapid construction method of small and medium span assembled I-shaped beam bridge |
| CN113306002A (en) * | 2021-05-28 | 2021-08-27 | 中铁四局集团第三建设有限公司 | Layout construction method and application of prefabricated bridge prefabricated part production base |
| CN113414868A (en) * | 2021-06-30 | 2021-09-21 | 保利长大工程有限公司 | Layout structure and method for UHPC (ultra high performance polycarbonate) section box girder prefabrication field |
| CN113884086A (en) * | 2021-09-27 | 2022-01-04 | 浙江交工集团股份有限公司 | Lamp belt guiding beam storage and finding system and beam finding method thereof |
| CN114261013B (en) * | 2021-10-18 | 2023-10-13 | 中铁十二局集团有限公司 | Box girder production line of wisdom roof beam field and system thereof |
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| CN104786367A (en) * | 2015-02-16 | 2015-07-22 | 中交四航局第二工程有限公司 | Pipe joint prefabricating workshop |
| CN108356973A (en) * | 2018-04-27 | 2018-08-03 | 有利华建筑预制件（深圳）有限公司 | Precast facade production line |
| CN108481543A (en) * | 2018-04-27 | 2018-09-04 | 有利华建筑预制件（深圳）有限公司 | Precast stair production line |
| CN108442258A (en) * | 2018-05-29 | 2018-08-24 | 中交路桥北方工程有限公司 | A kind of precast beam place |
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