CN113585618B - Precast concrete composite beam and construction method thereof - Google Patents
Precast concrete composite beam and construction method thereof Download PDFInfo
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- CN113585618B CN113585618B CN202111061735.1A CN202111061735A CN113585618B CN 113585618 B CN113585618 B CN 113585618B CN 202111061735 A CN202111061735 A CN 202111061735A CN 113585618 B CN113585618 B CN 113585618B
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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
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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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
- E04B1/38—Connections for building structures in general
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a precast concrete composite beam and a construction method thereof, and the precast concrete composite beam comprises a support beam, wherein a fixing mechanism is arranged on the support beam, the fixing mechanism comprises a fixing plate, a first butt joint reinforcing steel bar, a second butt joint reinforcing steel bar and fixing parts, the fixing plate is fixedly connected to the top of the support beam, the first butt joint reinforcing steel bar and the second butt joint reinforcing steel bar are respectively and fixedly connected to two sides of the fixing plate, two groups of fixing parts are arranged in the fixing plate, a stabilizing mechanism is used for increasing the connection tightness between the two composite beams through the butt joint of the first butt joint reinforcing steel bar and the second butt joint reinforcing steel bar with a butt joint block and through the butt joint of a support rod with a fixed rod and a cross rod, and the space formed between the two composite beams can be poured through the butt joint between the support beams and the fixation between the composite beams of support blocks, so that the working efficiency of workers is increased.
Description
Technical Field
The invention belongs to the technical field of building engineering, and particularly relates to a precast concrete composite beam and a construction method thereof.
Background
The combined beam is a beam formed by combining two different materials or combining different processes, is called a combined beam, one main beam of the combined beam is called a material, a bridge deck connecting each main beam is made of another material, and a combined beam formed by a prefabricated reinforced concrete beam or a prestressed concrete beam and a reinforced concrete bridge deck poured on site is also used.
The connection need be pour to current precast concrete composite beam in actual installation, but need set up the mould in addition at the in-process of pouring, need operations such as drawing of patterns after waiting dry, the installation is comparatively troublesome, leads to the staff to waste time and energy, and current precast concrete composite beam is when the butt joint, and the handing-over department often has the untight condition of connection, can lead to precast concrete composite beam junction to damage very fast, makes the life-span reduction of composite beam.
Disclosure of Invention
The invention aims to: through the butt joint of first butt joint reinforcing bar and second butt joint reinforcing bar and butt joint piece, the rethread rotates bolt extrusion movable block, promote the movable block and fix first butt joint reinforcing bar and second butt joint reinforcing bar, the butt joint between rethread bracing piece and dead lever and the horizontal pole, increase the compactness of connecting between two combination roof beams, through the butt joint between the supporting beam, the support of rethread bracing piece, the supporting shoe is fixed between the combination roof beam in addition, can pour the space that forms between two combination roof beams, avoid the user to need to build the mould and pour, staff's work efficiency has been increased.
The technical scheme adopted by the invention is as follows: a precast concrete composite beam, comprising: the supporting beam is provided with a fixing mechanism, the fixing mechanism comprises a fixing plate, a first butt joint reinforcing steel bar, a second butt joint reinforcing steel bar and fixing parts, the fixing plate is fixedly connected to the top of the supporting beam, the first butt joint reinforcing steel bar and the second butt joint reinforcing steel bar are respectively and fixedly connected to two sides of the fixing plate, and the two groups of fixing parts are arranged in the fixing plate; the stabilizing mechanism comprises two supporting blocks, a supporting plate, two threaded rods and two supporting parts, one side of each supporting block is fixedly connected with the fixing plate, the two threaded rods are respectively and fixedly connected between the upper inner wall and the lower inner wall of each supporting block, the supporting plate is sleeved between the two threaded rods, and the two supporting parts are respectively arranged in the two supporting blocks; and the installation mechanism comprises a plurality of butt joint blocks and a plurality of moving components, the bottoms of the butt joint blocks are fixedly connected with the supporting beams, and the moving components are arranged in the butt joint blocks.
The fixing part comprises two fixing grooves, a plurality of transverse rods and a plurality of fixing rods, the fixing grooves are formed in the top of each fixing plate, the transverse rods are fixedly connected between the inner walls of the two sides of the two fixing grooves respectively, and the fixing rods are fixedly connected between the inner walls of the two sides of the two fixing grooves respectively.
The top of the supporting beam is fixedly connected with a plurality of supporting rods, and the supporting rods are matched with the two fixing grooves respectively.
The two supporting parts comprise fixing springs and hollow nuts, the fixing springs are respectively sleeved on the outer surfaces of the two threaded rods, and the hollow nuts are respectively sleeved on the outer surfaces of the two threaded rods.
The upper inner wall and the lower inner wall of the two supporting blocks are fixedly connected with two stabilizer bars respectively, and the two stabilizer bars penetrate through two ends of the supporting plate.
The plurality of moving parts comprise moving blocks and rotating bolts, the rotating bolts are respectively in threaded connection with the corresponding butt-joint blocks, and the moving blocks are respectively embedded on two sides of the butt-joint blocks in a sliding manner; the moving block is a strip shape with a semicircular radial section; the moving block comprises a sealed elastic outer sleeve and non-Newtonian fluid filled in the sealed elastic outer sleeve.
Wherein, the inside department of being close to both sides of a supporting beam all inlays and is equipped with two I-steel.
Two ends of the supporting beam are fixedly connected with two mounting plates respectively, and four threaded holes are formed in the edge of each mounting plate.
And the bottom of the support beam is in threaded connection with a plurality of fixing bolts.
A construction method of a precast concrete composite beam comprises the following steps:
s1, butt joint of the composite beams: the combined beam is placed at a proper position, the other combined beam is butted, the bottoms of the two combined beams are fixed through the fixing bolts, the mounting plate is fixed through the bolts, the first butt-joint reinforcing steel bars are sleeved on the butt-joint blocks, and the supporting rods penetrate through the middle of a grid formed by the cross rods and the fixing rods.
S2, adjusting and supporting: and screwing the hollow nut, lifting the hollow nut, pushing the supporting plate to slide on the threaded rod through the elasticity of the fixed spring until the supporting plate is positioned below the first butt-joint reinforcing steel bar.
S3, fixing the composite beam: the rotating bolt is screwed to move up and down on the butt joint block, the moving block is extruded by the rotating bolt in the moving down process, the moving block is tightly attached to the first butt joint reinforcing steel bar and the second butt joint reinforcing steel bar, and finally, the butt joint position of the two combined beams is poured by cement to connect the two combined beams.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the first butt-joint reinforcing steel bar and the second butt-joint reinforcing steel bar are in butt joint with the butt-joint block, the movable block is extruded by rotating the bolt, the movable block is pushed to fix the first butt-joint reinforcing steel bar and the second butt-joint reinforcing steel bar, and the connection tightness between the two combined beams is increased by butt joint between the support rod and the fixed rod as well as the cross rod.
2. According to the invention, through butt joint between the support beams, support of the support plates and fixation of the support blocks to the combined beams, a space formed between the two combined beams can be poured, so that a user is prevented from building a mold for pouring, and the working efficiency of workers is increased; the structure can realize efficient and accurate assembly, ensure the stable postures of the combined beam and the supporting beam in the installation process and ensure the safety; and the device is convenient to adjust according to the specific conditions of the site, can adapt to various site environments and the inconvenient installation condition caused by prefabrication and processing errors, and has strong adaptability.
3. According to the invention, the steel bar structure and post-pouring connection of the composite beam are utilized, and meanwhile, the assembly connection of a buckling mode is realized by utilizing the matching of the fixed groove prefabricated on the composite beam and the supporting beam structure, so that the assembly process is convenient, the assembly speed and precision are improved, the connection strength and stability are very high during assembly, the posture and the anti-seismic stability during the post-pouring concrete solidification process are convenient, and the defect caused by external force during the post-pouring concrete solidification process is avoided.
4. According to the invention, the characteristics of the non-Newtonian fluid are utilized to enable the moving block to have extrusion deformation capacity under the action of a slow external force and have solid-state pressure resistance capacity under the action of a rapid external force, so that the moving block can meet the requirement that the butt joint block, the first butt joint reinforcing steel bar and the second butt joint reinforcing steel bar form an isolation effect in the installation process, the stability in the installation process is increased, enough gaps can be reserved in the design process, and the field installation is convenient; meanwhile, the movable block can adjust the relative position of the combined beams by utilizing the flexible parts of the movable block in the butt joint process of the adjacent combined beams and make up the problem of installation precision caused by errors in the machining process; the composite beam can play a role in buffering from the inside in the later use process, the structure at the joint is rapidly extruded under the condition of severe external vibration, and the impact resistance of the non-Newtonian fluid with the shear thickening characteristic is rapidly increased, so that the direct severe collision of the two composite beams and the connecting structure part is avoided, and the damages such as cracks, fragmentation and the like are generated; and under the condition of relieving or small vibration, the flexible characteristic of the moving block can absorb the vibration, the fatigue effect of the concrete is reduced, and the stability and the service life of the concrete are prolonged.
Drawings
FIG. 1 is a front perspective view of the present invention;
FIG. 2 is a rear perspective view of the present invention;
FIG. 3 is a bottom perspective view of the present invention;
FIG. 4 is a front cross-sectional view of the present invention;
FIG. 5 is an enlarged view of portion A of the present invention;
figure 6 is a cross-sectional schematic view of a moving mass of the present invention;
FIG. 7 is an exploded view of the present invention;
FIG. 8 is an assembled view of the present invention;
fig. 9 is an assembled top view of the present invention.
The labels in the figure are: 1-supporting beam, 2-fixing mechanism, 201-fixing plate, 202-first butt joint reinforcing steel bar, 203-second butt joint reinforcing steel bar, 204-supporting rod, 205-cross bar, 206-fixing rod, 207-fixing groove, 208-I-shaped steel, 3-stabilizing mechanism, 301-supporting block, 302-hollow nut, 303-supporting plate, 304-fixing spring, 305-threaded rod, 306-stabilizing rod, 4-mounting mechanism, 401-rotating bolt, 402-butt joint block, 403-moving block, 404-sealing elastic jacket, 405-non-Newtonian fluid, 5-mounting plate and 6-fixing bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Referring to FIGS. 1-9: a precast concrete composite beam, comprising: the supporting beam 1 is symmetrically arranged, the supporting beam 1 is arranged for supporting and installing other components, the supporting beam 1 is provided with a fixing mechanism 2, the fixing mechanism 2 is arranged for positioning, the fixing mechanism 2 comprises a fixing plate 201, a first butt joint reinforcing steel bar 202, a second butt joint reinforcing steel bar 203 and a fixing component, the fixing plate 201 is fixedly connected to the top of the supporting beam 1, the fixing plate 201 is arranged for installation and fixation, the first butt joint reinforcing steel bar 202 and the second butt joint reinforcing steel bar 203 are respectively and fixedly connected to two sides of the fixing plate 201, the second butt joint reinforcing steel bar 203 is positioned at the bottom of the first butt joint reinforcing steel bar 202, the first butt joint reinforcing steel bar 202 and the second butt joint reinforcing steel bar 203 are arranged, the joint of the two combined beams can be more stable, and the two groups of fixing components are arranged in the fixing plate 201; the stabilizing mechanism 3 is used for adjusting and supporting, the stabilizing mechanism 3 comprises two supporting blocks 301, a supporting plate 303, two threaded rods 305 and two supporting components, one sides of the two supporting blocks 301 are fixedly connected with the fixing plate 201, the supporting blocks 301 are arranged for installation and supporting, the outer surface of one side of each supporting block 301 is provided with a sliding groove, the supporting plate 303 is embedded with the sliding grooves in a sliding manner, the two threaded rods 305 are respectively and fixedly connected between the upper inner wall and the lower inner wall of each supporting block 301, the threaded rods 305 are arranged for limiting and connecting, the supporting plate 303 is sleeved between the two threaded rods 305, the supporting plate 303 is arranged for supporting the first butt-joint reinforcing steel bar 202, the two supporting components are respectively arranged in the two supporting blocks 301, and the mounting mechanism 4 is arranged for increasing the connection tightness between the first butt-joint reinforcing steel bar 202 and the second butt-joint reinforcing steel bar 203, the installation mechanism 4 comprises a plurality of butt-joint blocks 402 and a plurality of moving parts, the bottoms of the butt-joint blocks 402 are fixedly connected with the support beam 1, the butt-joint blocks 402 are used for limiting the first butt-joint steel bars 202 and the second butt-joint steel bars 203, the moving parts are all arranged in the butt-joint blocks 402, the fixing parts all comprise two fixing grooves 207, a plurality of cross rods 205 and a plurality of fixing rods 206, the two fixing grooves 207 are arranged at the tops of the fixing plates 201, the fixing grooves 207 are used for installation, the cross rods 205 are respectively and fixedly connected between the inner walls of the two sides of the two fixing grooves 207, the fixing rods 206 are respectively and fixedly connected between the inner walls of the front and the rear sides of the two fixing grooves 207, the cross rods 205 and the fixing rods 206 are used for increasing the stability of the pouring equipment, the two support parts comprise fixing springs 304 and hollow nuts 302, the two fixing springs 304 are respectively sleeved on the outer surfaces of the two threaded rods 305, two hollow nut 302 are respectively overlapped and are located the surface of two threaded rods 305, and the setting of fixed spring 304 is used for supporting plate 303, and hollow nut 302 is equipped with the internal thread, and hollow nut 302 matches each other with threaded rod 305, and can adjust the position of supporting plate 303 through the removal of hollow nut 302.
Referring to FIGS. 1-9: the top of the support beam 1 is fixedly connected with a plurality of support rods 204, the support rods 204 are arranged for positioning when the combined beam is connected, and meanwhile, the support rods 204 are inserted into grids between a cross bar 205 and a fixed rod 206, so that the connection tightness of a joint can be increased when cement is poured, the plurality of support rods 204 are respectively matched with two fixed grooves 207, two stabilizer bars 306 are respectively and fixedly connected between the upper inner wall and the lower inner wall of each support block 301, the stabilizer bars 306 are arranged for limiting a support plate 303, the support plate 303 can slide on the stabilizer bars 306, the two stabilizer bars 306 penetrate through two ends of the support plate 303, a plurality of moving parts comprise moving blocks 403 and rotating bolts 401, the moving blocks are arranged for extruding a first butt joint reinforcing bar 202 and a second butt joint reinforcing bar 203, the plurality of rotating bolts 401 are respectively in threaded connection with the corresponding butt joint blocks 402, the rotating bolts 401 are arranged for extruding the butt joint blocks 402, so that the butt joint blocks 402 move, the plurality of moving blocks 403 are respectively slidably embedded at two sides of the plurality of long strip butt joint blocks 402, 403 are semicircular moving blocks with semicircular radial sections, and a sliding block is arranged on one side of the straight surface; the moving mass 403 includes a sealed elastomeric casing 404 and a non-Newtonian fluid 405 filled within the sealed elastomeric casing 404.
It all inlays and is equipped with two I-steel 208 to be close to both sides department in a supporting beam 1's inside, the setting of I-steel 208 is used for increasing a supporting beam 1's structural strength, two mounting panels 5 of two fixedly connected with respectively in a supporting beam 1's both ends, four screw holes have all been seted up in 5 edges of every mounting panel, the setting of mounting panel 5 is used for connecting a supporting beam 1, a supporting beam 1's bottom threaded connection has a plurality of fixing bolt 6, fixing bolt 6 sets up and is used for fixing between two combination beam.
When the combined beam butt joint device is used, a user firstly places the combined beam at a proper position, butt joint is carried out on the other combined beam, the fixing bolt 6 is screwed to the bottom of the combined beam, the bottoms of the two combined beams are fixed through the fixing bolt 6, then the butt joint mounting plates 5 which are butted together are fixed through the bolt, at the moment, the first butt joint reinforcing steel bars 202 are sleeved on the butt joint blocks 402, the supporting rods 204 penetrate through the middle of a grid formed by the cross rods 205 and the fixing rods 206, then the hollow nuts 302 are screwed, the hollow nuts 302 rise on the threaded rods 305, the supporting plates 303 are pushed to slide on the threaded rods 305 through the elastic force of the fixing springs 304 until the supporting plates 303 are positioned below the first butt joint reinforcing steel bars 202, finally, the rotating bolts 401 are screwed, the rotating bolts 401 move up and down on the butt joint blocks 402, the rotating bolts 401 squeeze the moving blocks 403 in the downward moving process, the moving blocks 403 are tightly attached to the first butt joint reinforcing steel bars 202 and the second butt joint reinforcing steel bars 203, and finally, the butt joint part where the two combined beams are butted is poured by cement, so that the two combined beams are connected.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A precast concrete composite beam, comprising:
the supporting beam (1) is provided with a fixing mechanism (2), the fixing mechanism (2) comprises a fixing plate (201), a first butt joint reinforcing steel bar (202), a second butt joint reinforcing steel bar (203) and fixing parts, the fixing plate (201) is fixedly connected to the top of the supporting beam (1), the first butt joint reinforcing steel bar (202) and the second butt joint reinforcing steel bar (203) are respectively and fixedly connected to two sides of the fixing plate (201), and the two groups of fixing parts are arranged in the fixing plate (201);
the stabilizing mechanism (3) comprises two supporting blocks (301), a supporting plate (303), two threaded rods (305) and two supporting parts, one side of each of the two supporting blocks (301) is fixedly connected with the fixing plate (201), the two threaded rods (305) are respectively and fixedly connected between the upper inner wall and the lower inner wall of each of the two supporting blocks (301), the supporting plate (303) is sleeved between the two threaded rods (305), and the two supporting parts are respectively arranged in the two supporting blocks (301); and
the installation mechanism (4), installation mechanism (4) include a plurality of butt joint pieces (402) and a plurality of removal part, and is a plurality of the bottom and the supporting beam (1) fixed connection of butt joint piece (402), it is a plurality of remove the part and all set up in butt joint piece (402).
2. A precast concrete composite beam as set forth in claim 1, wherein: the fixed part all includes two fixed slots (207), a plurality of horizontal pole (205) and a plurality of dead lever (206), two the top of fixed plate (201) is all seted up in fixed slot (207), and is a plurality of horizontal pole (205) are fixed connection respectively between the both sides inner wall of two fixed slots (207), and is a plurality of dead lever (206) is fixed connection respectively between the front and back both sides inner wall of two fixed slots (207).
3. A precast concrete composite beam as recited in claim 2, wherein: the top of the supporting beam (1) is fixedly connected with a plurality of supporting rods (204), and the supporting rods (204) are matched with the two fixing grooves (207) respectively.
4. A precast concrete composite beam as set forth in claim 3, wherein: the two supporting parts comprise fixing springs (304) and hollow nuts (302), the fixing springs (304) are respectively sleeved on the outer surfaces of the two threaded rods (305), and the hollow nuts (302) are respectively sleeved on the outer surfaces of the two threaded rods (305).
5. A precast concrete composite beam as set forth in claim 4, wherein: two stabilizing rods (306) are fixedly connected between the upper inner wall and the lower inner wall of the two supporting blocks (301), and the two stabilizing rods (306) penetrate through two ends of the supporting plate (303).
6. A precast concrete composite beam as recited in claim 5, wherein: the plurality of moving parts comprise moving blocks (403) and rotating bolts (401), the plurality of rotating bolts (401) are respectively in threaded connection with corresponding butt-joint blocks (402), and the plurality of moving blocks (403) are respectively embedded on two sides of the plurality of butt-joint blocks (402) in a sliding manner; the moving block (403) is a strip with a semicircular radial section; the moving block (403) comprises a sealed elastic outer sleeve (404) and a non-Newtonian fluid (405) filled in the sealed elastic outer sleeve (404).
7. A precast concrete composite beam as set forth in claim 6, wherein: two I-shaped steel beams (208) are embedded in the supporting beam (1) close to the two sides.
8. A precast concrete composite beam as recited in claim 7, wherein: two ends of the supporting beam (1) are fixedly connected with two mounting plates (5) respectively, and each edge of each mounting plate (5) is provided with four threaded holes.
9. A precast concrete composite beam as recited in claim 8, wherein: the bottom of the supporting beam (1) is in threaded connection with a plurality of fixing bolts (6).
10. A construction method of a precast concrete composite girder using the precast concrete composite girder of claim 9, comprising the steps of:
s1, butt joint of composite beams: firstly, placing the combined beams at a proper position, butting the other combined beam, fixing the bottoms of the two combined beams through the fixing bolts (6), fixing the mounting plate (5) through the bolts, sleeving the first butting steel bar (202) on the butting block (402), and enabling the supporting rod (204) to penetrate through the middle of a grid formed by the cross rod (205) and the fixing rod (206);
s2, adjusting and supporting: screwing the hollow nut (302), lifting the hollow nut (302), pushing the supporting plate (303) to slide on the threaded rod (305) through the elastic force of the fixing spring (304) until the supporting plate (303) is positioned below the first butt-joint steel bar (202);
s3, fixing the composite beam: the rotating bolt (401) is screwed to move up and down on the butt joint block (402), the rotating bolt (401) extrudes the moving block (403) in the downward moving process, the moving block (403) is tightly attached to the first butt joint reinforcing steel bar (202) and the second butt joint reinforcing steel bar (203), and finally, the butt joint positions of the two combined beams are poured by cement to connect the two combined beams.
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| CN2021106548908 | 2021-06-11 | ||
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| CN113585618B true CN113585618B (en) | 2022-10-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3101340C2 (en) * | 1981-01-17 | 1983-04-28 | Karl Bachl Ziegel- und Betonwerke, 8391 Deching | Precast reinforced concrete part, in particular for ceiling panels |
| KR101233931B1 (en) * | 2010-09-30 | 2013-02-15 | 김충기 | A self assembly support beam structures and self assembly support beam structures installing method |
| KR101458409B1 (en) * | 2013-10-15 | 2014-11-07 | 이인규 | The precast concrete girder structure for a building |
| KR20160115602A (en) * | 2015-03-27 | 2016-10-06 | 장신찬 | Method of replacing bridge deck slab and prestressed concrete girder assembly used therein |
| CN106638254B (en) * | 2016-12-30 | 2018-06-29 | 湖南省交通规划勘察设计院 | A kind of few girder composite beam bridge and its construction method using Prefabricated composite floorings |
| CN109972510B (en) * | 2019-03-20 | 2024-02-27 | 苏州科技大学 | Assembled type combined bridge deck system with adjustable rod distance and U-shaped bolt connecting piece |
| CN110396919B (en) * | 2019-07-27 | 2021-02-09 | 蓝海绿业生态建设股份有限公司 | Assembled steel structure-concrete combined bridge and construction method thereof |
| CN110528778B (en) * | 2019-09-18 | 2024-03-12 | 苏州科技大学 | Novel tensile shear steel-concrete composite beam structure and manufacturing process thereof |
| CN112049241A (en) * | 2020-09-01 | 2020-12-08 | 上海家树建筑工程有限公司 | Connecting structure for precast beam column and construction method thereof |
| CN112502037B (en) * | 2020-12-23 | 2022-06-28 | 河南省交通规划设计研究院股份有限公司 | Wet seam connection structure of prefabricated decking |
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