CN110219416B - Precast concrete Y-shaped beam assembly and construction method thereof - Google Patents
Precast concrete Y-shaped beam assembly and construction method thereof Download PDFInfo
- Publication number
- CN110219416B CN110219416B CN201910629177.0A CN201910629177A CN110219416B CN 110219416 B CN110219416 B CN 110219416B CN 201910629177 A CN201910629177 A CN 201910629177A CN 110219416 B CN110219416 B CN 110219416B
- Authority
- CN
- China
- Prior art keywords
- concrete
- side beam
- steel
- roof beam
- side roof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a precast concrete Y-shaped beam assembly and a construction method thereof. The concrete platform thickness that the medial side of left side roof beam and right side roof beam set up is 50mm, be convenient for splice on the spot, produce dislocation when avoiding connecting, left side roof beam and right side roof beam are connected through I-steel and inboard prefabricated plate, and welded fastening, be convenient for pour concrete and fix, the concrete casing thickness that left side roof beam and right side roof beam outside set up is 60mm, and the inboard reinforcing bar net piece that the one deck netted ring set up that attaches of concrete casing, prevent to appear the crack, improve the structural strength of this precast concrete Y type roof beam subassembly, be provided with three rows of hoisting point positions on left side roof beam and the right side roof beam, and the interval is less than 2m, be convenient for stably hoist left side roof beam and right side roof beam through the crane.
Description
Technical Field
The invention relates to a concrete Y-shaped beam assembly, in particular to a precast concrete Y-shaped beam assembly and a construction method thereof, and belongs to the technical field of concrete structures in structural engineering.
Background
Along with the rapid development of China high-speed railways, high-speed rail stations appear like spring bamboo shoots after rain, and medium and small high-speed rail station houses bloom more frequently. The platform canopy is used as a canopy for shielding wind and rain when passengers get on or off the bus, and is one of essential important buildings of the high-speed railway station.
The rainshed construction generally adopts a site construction mode, namely pouring from scaffold erection, formwork erection and steel bar binding to concrete, most of work is completed manually on a construction site, the labor intensity is high, the construction site is disordered, the consumption of building materials is high, more building wastes are generated on site, and meanwhile, the surrounding environment is greatly influenced. The method has the advantages of neat construction site, short construction period and incomparable application prospect of mass production in site construction mode.
The concrete Y-shaped beam is a main structure for building a awning, and for the existing concrete Y-shaped beam, the two sides of the existing concrete Y-shaped beam cannot be symmetrically arranged when being built, so that stress imbalance is easily caused, the existing concrete Y-shaped beam is easy to topple over, is inconvenient to splice with an inner concrete slab for installation, is time-consuming and labor-consuming, seriously affects the construction process, and the existing concrete Y-shaped beam is poor in structural strength and easy to break, so that the service life of the existing concrete Y-shaped beam cannot be guaranteed, and certain potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the problems and provide a precast concrete Y-shaped beam assembly and a construction method thereof.
The invention realizes the above purpose through the following technical scheme: a precast concrete Y-shaped beam assembly comprises a left side beam, a right side beam, a middle beam, a beam inner main rib, a concrete table, a bolt placement groove, a connecting through hole, I-steel, a concrete shell, a reinforcing steel mesh and a concrete inner core; the concrete Y-shaped beam assembly comprises a main body structure of the concrete Y-shaped beam assembly, wherein the left side beam, the right side beam and the middle beam are respectively arranged at the left side and the right side of the middle beam, one end of a main rib in the beam is fixedly connected with one vertical side surface of the left side beam or the right side beam along the axial direction, the other end of the main rib in the beam extends out of the other vertical side surface of the left side beam or the right side beam along the axial direction, a concrete platform is arranged at the opposite side edges of the left side beam and the right side beam, a bolt placement groove is formed at the upper ends of the opposite side edges of the left side beam and the right side beam, connection through holes are formed at the bottoms of the bolt placement groove, I-shaped steel is respectively and fixedly connected with the two ends of the side walls of the left side beam and the right side beam, a concrete shell wraps the outermost layers of the left side beam and the right side beam, a layer of reinforcing steel mesh is added to the inner side of the concrete shell, and a concrete inner core is arranged at the inner side of the reinforcing mesh.
Preferably, in order to facilitate on-site splicing and avoid dislocation during connection, the left side beam and the right side beam are symmetrically arranged, and the thickness of the concrete platform at the opposite side edges of the left side beam and the right side beam is 50mm.
Preferably, in order to facilitate the fixation of the poured concrete, the left side beam and the right side beam are connected with the precast slabs through I-steel, and welded and fixed.
Preferably, in order to improve the structural strength of the precast concrete Y-shaped beam assembly, the thickness of the concrete shell arranged on the outer sides of the left side beam and the right side beam is 60mm, and a layer of mesh reinforcement is added on the inner side of the concrete shell, wherein the mesh reinforcement is arranged in a meshed and encircling mode.
Preferably, in order to facilitate the stable lifting of the left side beam and the right side beam by the crane, three rows of lifting point positions are arranged on the left side beam and the right side beam, and the distance is smaller than 2m.
The construction method of the precast concrete Y-shaped beam assembly comprises the following steps:
1) Positioning the steel bars, measuring and paying off after the cast-in-situ canopy concrete column is completed, rechecking the steel plates, and correcting the offset steel bars;
2) Installing a prefabricated column, after the steel bar is corrected, performing test hoisting by using a crawler crane, stopping hoisting at a distance cm, checking the stress conditions of a steel wire rope and a lifting hook, keeping the component horizontal, then hoisting to the upper part of an operation layer, stopping landing, guiding an operator to land, observing whether connecting steel bars are aligned or not by using a mirror, slowly landing, and grouting after finishing;
3) After the support frame moves to the lower part of the beam, firstly fixing a support frame support on the ground to ensure the stability of the support frame, then adjusting a hydraulic device at the upper part of the hydraulic jack to adjust the template to be parallel to the bottom of the beam and consistent in elevation, and checking the support frame;
4) After the support frames on the two sides of the beam are in place, a crawler crane is used for carrying out test hoisting, the hoisting is stopped at a distance cm, the stress conditions of a steel wire rope and a lifting hook are checked, so that a component is kept horizontal, then the hoisting is stopped when the component is lifted to the upper part of an operation layer, the operation staff guides the landing, a mirror is used for observing whether a connecting steel bar is aligned, slow landing is carried out, and retesting is carried out after completion, so that the beam elevation is ensured to be accurate;
5) I-steel welding, steel bar lapping, concrete pouring, welding between the plates and Liang Gongzi steel, lapping or welding between the steel bars, and concrete pouring after the completion.
The beneficial effects of the invention are as follows: the precast concrete Y-shaped beam assembly and the construction method thereof are reasonable in design, the left side beam and the right side beam are symmetrically arranged, the thickness of a concrete table arranged on the inner sides of the left side beam and the right side beam is 50mm, the precast concrete Y-shaped beam assembly is convenient for splicing on site, dislocation is avoided when the precast concrete Y-shaped beam assembly is connected with a precast slab through I-shaped steel, welding and fixing are performed, casting concrete is convenient to fix, the thickness of a concrete shell arranged on the outer sides of the left side beam and the right side beam is 60mm, a layer of mesh-shaped reinforcing steel meshes are additionally arranged on the inner sides of the concrete shell in a surrounding mode, cracks are prevented from occurring, the structural strength of the precast concrete Y-shaped beam assembly is improved, three rows of hanging point positions are arranged on the left side beam and the right side beam, the distance is smaller than 2m, and the left side beam and the right side beam are convenient to stably hang up through a crane.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of the front structure of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention.
In the figure: 1. left side beam, 2, right side beam, 3, middle beam, 4, main bar in beam, 5, concrete table, 6, bolt setting groove, 7, connecting through hole, 8, I-steel, 9, concrete shell, 10, reinforcing bar net piece and 11, concrete inner core.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 3, a precast concrete Y-beam assembly includes a left side beam 1, a right side beam 2, a middle beam 3, an in-beam main rib 4, a concrete table 5, a bolt placement groove 6, a connecting through hole 7, an i-beam 8, a concrete outer shell 9, a reinforcing mesh 10 and a concrete inner core 11; the left side beam 1, the right side beam 2 and the middle beam 3 form a main body structure of the concrete Y-shaped beam assembly, the left side beam 1 and the right side beam 2 are respectively arranged on the left side and the right side of the middle beam 3, one end of a main rib 4 in the beam is fixedly connected with one vertical side surface of the left side beam 1 or the right side beam 2 along the axial direction, the other end of the main rib 4 in the beam extends out of the other vertical side surface of the left side beam 1 or the right side beam 2 along the axial direction, a concrete platform 5 is arranged on the opposite side edges of the left side beam 1 and the right side beam 2, a bolt placement groove 6 is formed in the upper ends of the opposite side edges of the left side beam 1 and the right side beam 2, a connecting through hole 7 is formed in the bottom of the bolt placement groove 6, I-shaped steel 8 is respectively fixedly connected with the two ends of the side walls of the left side beam 1 and the right side beam 2, a layer of reinforcing steel mesh 10 is added on the inner side of the concrete casing 9, and the concrete inner core 11 is arranged on the inner side of the outermost layer of the left side beam 1 and the right side beam 2.
The left side beam 1 and the right side beam 2 are symmetrically arranged, the thickness of a concrete table 5 arranged on the opposite side edges of the left side beam 1 and the right side beam 2 is 50mm, the split joint is convenient to carry out on site, dislocation is avoided during connection, the left side beam 1 and the right side beam 2 are connected with an inner precast slab through I-shaped steel 8 and are welded and fixed, casting concrete is convenient to fix, the thickness of a concrete shell 9 arranged on the outer side of the left side beam 1 and the right side beam 2 is 60mm, a layer of mesh-shaped steel reinforcement net 10 arranged around the inner side of the concrete shell 9 is additionally arranged, cracks are prevented, the structural strength of the precast concrete Y-shaped beam assembly is improved, three rows of hanging point positions are arranged on the left side beam 1 and the right side beam 2, the distance is smaller than 2m, and the left side beam 1 and the right side beam 2 are convenient to stably hang up through a crane.
The construction method of the precast concrete Y-shaped beam assembly comprises the following steps:
1. positioning the steel bars, measuring and paying off after the cast-in-situ canopy concrete column is completed, rechecking the steel plates, and correcting the offset steel bars;
2. installing a prefabricated column, after the steel bar is corrected, performing test hoisting by using a crawler crane, stopping hoisting 50cm away from the ground, checking the stress conditions of a steel wire rope and a lifting hook to keep the component horizontal, then hoisting to the upper part of an operation layer for 1m, stopping landing, guiding an operator to land, observing whether connecting steel bars are aligned by using a mirror, slowly landing, and grouting after finishing;
3. after the support frame moves to the lower part of the beam, firstly fixing a support frame support on the ground to ensure the stability of the support frame, then adjusting a hydraulic device at the upper part of the hydraulic jack to adjust the template to be parallel to the bottom of the beam and consistent in elevation, and checking the support frame;
4. after the support frames on the two sides of the beam are in place, a crawler crane is used for carrying out test hanging, the hoisting is stopped 50cm away from the ground, the stress condition of a steel wire rope and a lifting hook is checked, so that a component is kept horizontal, then the hoisting is carried out to the upper part of an operation layer for 1m, the lowering is stopped, an operator guides the lowering, a mirror is used for observing whether a connecting steel bar is opposite, the lowering is slowly carried out, and retesting is carried out after the completion, so that the beam elevation is ensured to be accurate;
5. i-steel welding, steel bar lapping, concrete pouring, welding between the plates and Liang Gongzi steel, lapping or welding between the steel bars, and concrete pouring after the completion.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1. A precast concrete Y-beam assembly, the precast concrete Y-beam assembly comprising: the concrete pile comprises a left side beam (1), a right side beam (2), a middle beam (3), a main beam rib (4) in the beam, a concrete platform (5), a bolt mounting groove (6), a connecting through hole (7), I-steel (8), a concrete shell (9), a reinforcing mesh (10) and a concrete inner core (11);
the left side beam (1), the right side beam (2) and the middle beam (3) form a main body structure of the concrete Y-shaped beam assembly, the left side beam (1) and the right side beam (2) are respectively arranged at the left side and the right side of the middle beam (3), one end of an inner beam main rib (4) is fixedly connected to one vertical side surface of the left side beam (1) or the right side beam (2) along the axial direction, the other end of the inner beam main rib (4) extends out of the other vertical side surface of the left side beam (1) or the right side beam (2) along the axial direction, a concrete platform (5) is arranged at the opposite side edges of the left side beam (1) and the right side beam (2), a bolt placement groove (6) is formed at the opposite side edges of the left side beam (1) and the right side beam (2), a connecting through hole (7) is formed in the bottom of the bolt placement groove (6), I-shaped steel (8) is respectively fixedly connected to the two vertical side surfaces of the left side beam (1) and the right side beam (2) along the axial direction, a shell (9) is wrapped by the reinforced concrete (10) at the inner core layer (10) of the inner side of the left side beam (1) and the right side beam (2);
the left side beam (1) and the right side beam (2) are symmetrically arranged, and the thickness of a concrete table (5) arranged on the opposite side edges of the left side beam (1) and the right side beam (2) is 50mm; the left side beam (1) and the right side beam (2) are connected with the precast slab through I-steel (8) and are welded and fixed; the thickness of a concrete shell (9) arranged on the outer sides of the left side beam (1) and the right side beam (2) is 60mm, and a layer of mesh (10) of reinforcing steel bars arranged in a net-shaped surrounding manner is added on the inner side of the concrete shell (9); three rows of hanging point positions are arranged on the left side beam (1) and the right side beam (2), and the distance is smaller than 2m.
2. A method of constructing a precast concrete Y-beam assembly according to claim 1, the method comprising:
1) Positioning the steel bars, measuring and paying off after the cast-in-situ canopy concrete column is completed, rechecking the steel plates, and correcting the offset steel bars;
2) Installing a prefabricated column, after the steel bar is corrected, performing test hoisting by using a crawler crane, stopping hoisting 50cm away from the ground, checking the stress conditions of a steel wire rope and a lifting hook to keep the component horizontal, then hoisting to the upper part of an operation layer for 1m, stopping landing, guiding an operator to land, observing whether connecting steel bars are aligned by using a mirror, slowly landing, and grouting after finishing;
3) After the support frame moves to the lower part of the beam, firstly fixing a support frame support on the ground to ensure the stability of the support frame, then adjusting a hydraulic device at the upper part of the hydraulic jack to adjust the template to be parallel to the bottom of the beam and consistent in elevation, and checking the support frame;
4) After the support frames on the two sides of the beam are in place, a crawler crane is used for carrying out test hanging, the hoisting is stopped 50cm away from the ground, the stress condition of a steel wire rope and a lifting hook is checked, so that a component is kept horizontal, then the hoisting is carried out to the upper part of an operation layer for 1m, the lowering is stopped, an operator guides the lowering, a mirror is used for observing whether a connecting steel bar is opposite, the lowering is slowly carried out, and retesting is carried out after the completion, so that the beam elevation is ensured to be accurate;
5) I-steel welding, steel bar lapping, concrete pouring, welding between the plates and Liang Gongzi steel, lapping or welding between the steel bars, and concrete pouring after the completion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910629177.0A CN110219416B (en) | 2019-07-12 | 2019-07-12 | Precast concrete Y-shaped beam assembly and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910629177.0A CN110219416B (en) | 2019-07-12 | 2019-07-12 | Precast concrete Y-shaped beam assembly and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110219416A CN110219416A (en) | 2019-09-10 |
| CN110219416B true CN110219416B (en) | 2023-09-15 |
Family
ID=67813249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910629177.0A Active CN110219416B (en) | 2019-07-12 | 2019-07-12 | Precast concrete Y-shaped beam assembly and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110219416B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809734B (en) * | 2022-05-31 | 2024-03-29 | 中铁建工集团有限公司 | Construction method of assembled platform canopy |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2360492A1 (en) * | 1973-12-05 | 1975-06-19 | Demuss Gerhard | Hexagonal-plan ceiling structure element - with centre column under independent capital and diagonal cantilever arms |
| JP3130908U (en) * | 2007-02-01 | 2007-04-12 | 株式会社アスカ設計 | Canopy structure for gas station |
| CN103225373A (en) * | 2012-01-29 | 2013-07-31 | 吴淑环 | Roof eaves board |
| CN106988423A (en) * | 2017-04-12 | 2017-07-28 | 中铁工程设计咨询集团有限公司 | A kind of orbit traffic overhead station |
| CN109610630A (en) * | 2018-07-22 | 2019-04-12 | 北京工业大学 | A kind of concrete frame mechanization assembly type balcony |
| CN210288878U (en) * | 2019-07-12 | 2020-04-10 | 中铁建设集团有限公司 | Precast concrete Y type roof beam subassembly |
-
2019
- 2019-07-12 CN CN201910629177.0A patent/CN110219416B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2360492A1 (en) * | 1973-12-05 | 1975-06-19 | Demuss Gerhard | Hexagonal-plan ceiling structure element - with centre column under independent capital and diagonal cantilever arms |
| JP3130908U (en) * | 2007-02-01 | 2007-04-12 | 株式会社アスカ設計 | Canopy structure for gas station |
| CN103225373A (en) * | 2012-01-29 | 2013-07-31 | 吴淑环 | Roof eaves board |
| CN106988423A (en) * | 2017-04-12 | 2017-07-28 | 中铁工程设计咨询集团有限公司 | A kind of orbit traffic overhead station |
| CN109610630A (en) * | 2018-07-22 | 2019-04-12 | 北京工业大学 | A kind of concrete frame mechanization assembly type balcony |
| CN210288878U (en) * | 2019-07-12 | 2020-04-10 | 中铁建设集团有限公司 | Precast concrete Y type roof beam subassembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110219416A (en) | 2019-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| LU102302B1 (en) | Steel reinforcement cage for use in ventilation shaft diaphragm wall, and usage method | |
| CN111254796B (en) | Single-side integral hoisting long-span overbridge for multiple railway business lines and construction method | |
| CN107905111B (en) | A kind of rigid frame-continuous girder end bay construction technology | |
| CN110409318B (en) | Assembling and erecting method for large-span simply-supported steel-concrete composite beam | |
| CN107905124B (en) | A kind of symmetrical expression rigid frame-continuous girder construction technology | |
| CN209799969U (en) | A integrally lift up cantilever formwork device for quick construction shaft lining cutting | |
| CN110700119A (en) | Upper traveling system of assembled Bailey beam hanging basket and design method thereof | |
| CN210659228U (en) | Movable single-side formwork system for subway construction | |
| CN114134820A (en) | Formwork support and construction method for I-shaped composite beam cast-in-place bridge deck | |
| CN103132702A (en) | Longspan pipe truss pulling bar lifting and overhead rotating emplacing construction method | |
| CN110219416B (en) | Precast concrete Y-shaped beam assembly and construction method thereof | |
| CN109869153A (en) | The whole of rapid construction vertical shaft lining cutting promotes cantilever form device and construction method | |
| CN210288878U (en) | Precast concrete Y type roof beam subassembly | |
| CN106284989A (en) | The sliding form bracing system of double track and complete construction method | |
| CN210798994U (en) | Concrete structure wall body unilateral template structure | |
| CN210395127U (en) | Assembled Bailey beam hanging basket upper walking system | |
| CN210288869U (en) | Precast concrete board subassembly | |
| CN207512968U (en) | A kind of splicing node of steel plate combined shear wall | |
| CN108797350B (en) | Tower column inner and outer stiff skeleton device and construction method thereof | |
| CN110219415B (en) | Precast concrete board assembly and construction method thereof | |
| CN110747875A (en) | Construction method for building scaffold for open caisson construction of cyclone tank | |
| CN216947881U (en) | Formwork support of I-shaped composite beam cast-in-situ bridge deck | |
| CN213740645U (en) | Temporary buttress support | |
| CN220166687U (en) | Cast-in-situ construction arch frame for upper beam of cable tower | |
| CN220661246U (en) | Bottom die and side die combined system of prefabricated box girder and forming system comprising same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |