CN113370384A - Fixed hydraulic template moving trolley tool and T-beam prefabricating construction process - Google Patents
Fixed hydraulic template moving trolley tool and T-beam prefabricating construction process Download PDFInfo
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- CN113370384A CN113370384A CN202110759700.9A CN202110759700A CN113370384A CN 113370384 A CN113370384 A CN 113370384A CN 202110759700 A CN202110759700 A CN 202110759700A CN 113370384 A CN113370384 A CN 113370384A
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- trolley tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
- B28B23/024—Supporting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a fixed hydraulic template moving trolley tool and a T-beam prefabricating construction process, which comprise an embedded steel rail, a wheel set and a pedestal structure; the upper end of the pedestal structure is formed into a support body, the upper surface of the support body is provided with a thick steel plate with the thickness of 6mm, and the thick steel plate is used as a bottom plate of the prefabricated T-shaped beam; the tool further comprises a die assembly component; the die assembly component comprises a plurality of groups of obliquely arranged die assembly oil cylinders which are symmetrically arranged on two sides of the movable trolley tool. The method adopts a fixed hydraulic template mobile trolley tool to perform T-beam prefabrication construction, hydraulic templates are assembled and fixed in a pouring area, the mobile trolley tool is used as a conveying system to be connected with each production area in series, the production area is divided into a steel bar binding area, a concrete pouring area, a steam curing area and a tensioning lifting area according to functions, the mobile trolley tool completes corresponding processes in each area, and line production is formed through the mobile trolley tool, so that the production efficiency of beam pieces is improved, and the quality of precast beams is improved.
Description
Technical Field
The invention relates to the technical field of bridge T-beam building construction, in particular to a fixed hydraulic template moving trolley tool and a T-beam prefabricating construction process based on the fixed hydraulic template moving trolley tool.
Background
The beam slab prefabrication is significant in construction of strong traffic countries at the present stage, the bridge beam slab prefabrication construction process is widely applied due to the advantages of the bridge beam slab prefabrication construction process, but the problems that the site construction occupied area is large, cross potential safety hazards among procedures are large, a concrete prefabrication pedestal cannot be reused and the like in the traditional beam slab prefabrication are solved, the ratio of the beam slab prefabrication in fine works is increased, the status of the bridge prefabrication in the strong traffic countries is fully played, and the bridge beam slab prefabrication construction method has great significance.
At present, a plurality of extra-large bridges appear in various places, so that technicians in the field need to research and develop a tool for constructing a T-shaped beam of a bridge suitable for the extra-large bridge and a new construction process based on the tool aiming at the structural form characteristics of a beam plate of the extra-large bridge, so as to reduce the occupied area, realize mutual independence of functional areas, realize flow operation, be simple to operate and finally realize strict control on quality.
Disclosure of Invention
The fixed hydraulic template moving trolley tool has the advantages of novel structure, reduced floor area, mutually independent functional areas, simplicity in operation, controllable quality, good economic benefit and social benefit and high popularization value, and the T-beam prefabricating construction process based on the fixed hydraulic template moving trolley tool.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention discloses a fixed hydraulic template moving trolley tool, which comprises:
the embedded steel rail is configured as a moving rail of the moving trolley tool;
the wheel set slides on the surface of the embedded steel rail and drives the movable trolley tool to move along the extending direction of the embedded steel rail; and
a pedestal structure integrated on the top of the mobile trolley tool;
the upper end of the pedestal structure is formed into a support body, the upper surface of the support body is provided with a thick steel plate with the thickness of 6mm, and the thick steel plate is used as a bottom plate of the prefabricated T-shaped beam;
this frock still includes:
a mold closing assembly;
the die assembly component comprises a plurality of groups of obliquely arranged die assembly oil cylinders which are symmetrically arranged on two sides of the movable trolley tool.
Further, the wheel set is divided into a driving wheel set and a driven wheel set;
the driving wheel sets are mounted at two ends of the moving trolley tool in the length direction;
a plurality of groups of driven wheel sets are arranged between the driving wheel sets at the two ends along the length direction of the movable trolley tool;
the driving wheel set at one end of the movable trolley tool is provided with two driving wheels which are symmetrically arranged along the width direction of the movable trolley tool, and the center distance between the two driving wheels is 1000 mm;
the wheelset through the steel construct roof beam structure integrate in on the mobile station car frock.
Further, the steel structure beam structure includes:
the side plates are arranged symmetrically and at intervals; and
a top plate integrated at the upper end of the side plate;
the space between the two side plates is an accommodating space of the wheel set, and a wheel shaft extending along the horizontal direction is mounted on each side plate;
the wheel set is integrated on the steel structure beam structure through the wheel shaft;
the pedestal structure is supported on the steel beam structure through the top plate.
Further, the pedestal structure includes:
the size of the cross section of the frustum structure is gradually reduced from one end close to the top plate to one end far away from the top plate; and
a support structure integrated at the upper end of the frustum structure;
the upper end of the supporting structure is the thick steel plate.
Further, the length of the pedestal structure is 42 m;
the traveling speed of the movable trolley tool is less than 3 m/min;
a track foundation is laid on site, the width of the track foundation is 1955mm, and the thickness of the track foundation at the position where the track foundation is matched with the mobile trolley tool is 300 mm;
the track foundation is formed by pouring C30 concrete;
the height difference between the adjacent embedded steel rails is not more than 10mm, the longitudinal slope of each embedded steel rail is not more than 0.5%, and the deviation of each embedded steel rail is within +/-3 mm;
the length of the movable trolley tool is 173 m.
Further, the clamp assembly includes:
the die closing oil cylinders are symmetrically arranged on two sides of the movable trolley tool;
bases are symmetrically arranged on the track base, a cylinder body of the die-closing oil cylinder is rotatably connected with one end, away from the movable trolley tool, of the base through a rotating shaft, and a cylinder rod of the die-closing oil cylinder extends towards one side of the movable trolley tool and is respectively connected with the template structures on two sides to drive the template structures on two sides to move in opposite directions so as to complete die closing;
the number of the die assembly oil cylinders on one side of the movable trolley tool is six, and the six die assembly oil cylinders are arranged at intervals along the length direction of the pedestal structure.
The invention discloses a T-beam prefabricating construction process, which is based on the fixed hydraulic template movable trolley tool set forth in any one of claims 1 to 6, and mainly comprises the following steps:
s101, construction preparation, namely dividing a steel bar binding area, a concrete pouring area, a steam curing area and a tensioning lifting area into a construction and installation functional area of a precast yard, completing assembly and debugging of a mobile trolley tool, and enabling a track to penetrate from the steel bar binding area to the tensioning lifting area;
s102, a mobile trolley tool is used for steel bar binding operation, the mobile trolley tool and a steel bar binding jig frame are in place, a web plate and a top plate steel bar are bound, an end baffle is installed, and the binding jig frame is operated, so that a steel bar framework is separated from the jig frame;
s103, installing a template, moving a trolley tool to carry a steel reinforcement framework to a fixed hydraulic template area, operating a hydraulic system after accurate positioning, synchronously jacking 6 die closing oil cylinders on one side, keeping the whole template uniformly stressed when the hydraulic template is automatically closed, and installing top surface and bottom surface opposite-pulling screws;
s104, pouring concrete, after the template is reinforced, pouring the concrete, and filling the concrete into the template by adopting a bucket, wherein the slump is controlled to be 160-200 mm;
s105, automatically removing the template, removing the counter-pulling screw rods on the top surface and the bottom surface when the strength of concrete reaches more than 2.5mpa, and operating the top to reversely push the oil cylinder so that the top oil cylinder tightly pushes the diaphragm plate; simultaneously, the mold closing oil cylinders on the two sides are operated to enable the template to generate outward and downward displacement, and the mold removal is completed under the combined action of the reverse thrust oil cylinder and the mold closing oil cylinder;
s106, intelligent steam curing is carried out, and after the template is disassembled, the trolley tool is moved to a steam curing area to carry out steam curing;
s107, performing initial prestress tensioning, after steam curing, detecting the compressive strength of the curing test block under the same condition, wherein the strength reaches over 75 percent of the designed strength, and performing initial prestress tensioning;
and S108, transferring the movable trolley tool, after the beam slab is primarily tensioned, adjusting away the movable trolley tool, transferring the movable trolley tool from the tensioning lifting area to the reinforcement binding area by using two 16t portal cranes, and starting the next cycle operation.
Further, in the step S106, before the beam slab enters the steam-curing shed, the temperature in the shed is adjusted to be close to the temperature of the beam body, the temperature difference is within 5 ℃, after the beam body enters the steam-curing shed, the temperature starts to rise gradually, the temperature rise rate does not exceed 10 ℃/h, and the temperature drop rate does not exceed 10 ℃/h;
the compressive strength of the concrete reaches more than 37.5mpa so as to carry out primary tensioning operation;
the steam curing temperature of the beam body is 43 ℃, and the steam curing time is more than 22.5 h.
Further, in step S107, the initial tension control stress is 60% of the design tension stress, after the initial tension is finished, the beam is transferred to the beam storage area by using two 100t gantry cranes for maintenance, and after the strength reaches more than 5Mpa and the age reaches more than 7 days, the final tension and the grouting are performed.
In the technical scheme, the fixed hydraulic template moving trolley tool and the T beam prefabrication construction process based on the fixed hydraulic template moving trolley tool have the following beneficial effects:
the method adopts a fixed hydraulic template mobile trolley tool to perform T-beam prefabrication construction, hydraulic templates are assembled and fixed in a pouring area, the mobile trolley tool is used as a conveying system to be connected with each production area in series, the production area is divided into a steel bar binding area, a concrete pouring area, a steam curing area and a tensioning lifting area according to functions, the mobile trolley tool completes corresponding processes in each area, and line production is formed through the mobile trolley tool, so that the production efficiency of beam pieces is improved, and the quality of precast beams is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a fixed hydraulic template moving trolley tool in a pre-embedded state according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fixed hydraulic template moving trolley tool provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a working state of the fixed hydraulic template moving trolley tool provided in the embodiment of the present invention;
fig. 4 is a schematic structural view of a T-beam after the fixed hydraulic template moving trolley tool provided by the embodiment of the invention acts on a template;
fig. 5 is a flow chart of a construction process of a prefabricated T beam based on a fixed hydraulic template mobile trolley tool provided by the embodiment of the invention;
fig. 6 is a temperature-time-intensity change curve of steam curing in the construction of a prefabricated T beam based on a fixed hydraulic template moving trolley tool according to an embodiment of the present invention.
Description of reference numerals:
1. a track foundation; 2. moving a trolley tool; 3. pre-burying a steel rail; 4. a pedestal structure; 5. a steel structure beam structure; 6. a wheel set; 7. a wheel axle; 8. a die closing oil cylinder; 9. a rack system; 10. a template; 11. A reinforcing beam;
401. a frustum structure; 402. a support structure; 403. a thick steel plate;
501. a side plate; 502. a top plate.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
See fig. 1-4;
the first embodiment discloses a fixed hydraulic template moving trolley tool;
this embodiment one fixed hydraulic mould board removes platform truck frock, this frock includes:
an embedded steel rail 3, wherein the embedded steel rail 3 is configured as a moving track of the moving trolley tool 2;
the wheel set 6 slides on the surface of the embedded steel rail 3 and drives the movable trolley tool 2 to move along the extending direction of the embedded steel rail 3; and
a pedestal structure 4 integrated on the top of the mobile trolley tool 2;
the upper end of the pedestal structure 4 is formed as a support body, the upper surface of the support body is provided with a thick steel plate 403 with the thickness of 6mm, and the thick steel plate 403 is used as a bottom plate of the prefabricated T-beam;
this frock still includes:
a mold closing assembly;
the die closing assembly comprises a plurality of groups of obliquely arranged die closing oil cylinders 8 which are symmetrically arranged on two sides of the movable trolley tool 2.
Specifically, this embodiment one discloses a fixed hydraulic template mobile trolley frock, and it includes pre-buried rail 3 in rail basis 1, drives whole frock through foretell wheelset 6 on pre-buried rail 3 and removes, simultaneously, designs for foretell pedestal structure 4 in the upper end of frock, and pedestal structure 4's top has a thickness to be 6 mm's steel plate 403, and when the construction, this steel plate 403 can regard as the bottom plate of prefabricated T roof beam. The production area is divided into four fixing areas, namely a reinforcement binding area, a concrete pouring area, a steam curing area and a tensioning lifting area, the hydraulic template is assembled in the concrete pouring area, the template is installed and dismantled through synchronous stretching of a fixed hydraulic system, and the mobile trolley tool 2 is driven by a motor to walk in the different areas and complete different processes.
Preferably, the wheel set 6 of the present embodiment is divided into a driving wheel set and a driven wheel set;
two ends of the moving trolley tool 2 in the length direction are provided with driving wheel sets;
a plurality of groups of driven wheel sets are arranged between the driving wheel sets at the two ends along the length direction of the movable trolley tool 2;
the driving wheel set at one end of the movable trolley tool 2 is provided with two driving wheels which are symmetrically arranged along the width direction of the movable trolley tool 2, and the center distance between the two driving wheels is 1000 mm;
Wherein, above-mentioned steel constructs girder construction 5 includes:
a top plate 502 integrated at the upper end of the side plate 501;
the space between the two side plates 501 is the accommodating space of the wheel set 6, and the side plates 501 are provided with wheel shafts 7 extending along the horizontal direction;
the wheel set 6 is integrated on the steel structure beam structure 5 through a wheel shaft 7;
the pedestal structure 4 is supported on the steel beam structure 5 by a top plate 502.
Further, the pedestal structure 4 includes:
the frustum structure 401 gradually decreases in cross-sectional dimension from the end close to the top plate 502 to the end far away from the top plate 502; and
a support structure 402 integrated at the upper end of the frustum structure 401;
the upper end of the support structure 402 is a thick steel plate 403.
The mobile trolley tool disclosed by the embodiment is small in occupied area and can meet the prefabrication construction of T beams and box beams. However, the construction method has certain requirements on the structural form and the size of the beam plate, the structural form and the size of the beam plate need to be kept consistent, and the utilization efficiency of the template is improved. The above introduces the integrated structure of the wheel set 6 of the first embodiment and the concrete structural composition of the pedestal structure 4 supporting the T beam, the wheel set 6 corresponding to the steel beam structure 5 is integrated, the wheel set 6 of the first embodiment is divided into the driving wheels at two ends and the driven wheel located at the middle position, the driving wheels rotate around the wheel shaft 7 under the driving of the motor, and the driven wheel slides on the embedded steel rail 3 along with the movement of the mobile trolley tool 2, so that the mobile trolley tool 2 moves to different areas along the embedded steel rail 3, and finally different processes are completed in different areas, so as to realize the assembly line type operation.
A preferred embodiment will now be described further:
the length of the stand structure 4 is 42 m;
the traveling speed of the movable trolley tool 2 is less than 3 m/min;
a track foundation 1 is laid on site, the width of the track foundation 1 is 1955mm, and the thickness of the track foundation 1 at the position matched with the movable trolley tool 2 is 300 mm;
the track foundation 1 is formed by pouring C30 concrete;
the height difference of the adjacent embedded steel rails 3 is not more than 10mm, the longitudinal slope of each embedded steel rail 3 is not more than 0.5%, and the deviation of each embedded steel rail 3 is within +/-3 mm;
the length of the movable trolley tool 2 is 173 m.
Wherein, above-mentioned compound die subassembly includes:
a plurality of mold closing oil cylinders 8 symmetrically arranged on two sides of the movable trolley tool 2;
bases are symmetrically arranged on the track foundation 1, a cylinder body of the die closing oil cylinder 8 is rotatably connected with one end, far away from the movable trolley tool 2, of the base through a rotating shaft 7, a cylinder rod of the die closing oil cylinder 8 extends towards one side of the movable trolley tool 2 and is respectively connected with the templates 10 on two sides to drive the templates 10 on two sides to move oppositely to complete die closing;
the number of the die-closing oil cylinders 8 on one side of the movable trolley tool 2 is six, and the six die-closing oil cylinders 8 are arranged at intervals along the length direction of the pedestal structure 4.
The mold closing oil cylinder 8 is obliquely arranged, a cylinder rod of the mold closing oil cylinder can obliquely extend upwards according to the requirement of the motion tracks of the templates 10 on two sides so as to push the templates 10 towards the inner side, and finally the template 10 is fixed under the holding of the mold closing oil cylinder 8, and concrete is poured finally.
Example two:
see fig. 5-6;
the invention discloses a T-beam prefabricating construction process, which is based on the fixed hydraulic template movable trolley tool set forth in any one of claims 1 to 6, and mainly comprises the following steps:
s101, construction preparation, namely dividing a steel bar binding area, a concrete pouring area, a steam curing area and a tensioning lifting area into a construction and installation functional area of a precast yard, completing assembly and debugging of the mobile trolley tool 2, and communicating a track from the steel bar binding area to the tensioning lifting area;
s102, performing reinforcement binding operation on the movable trolley tool 2, positioning the movable trolley tool 2 and a reinforcement binding jig frame, binding web and top plate reinforcements, installing an end baffle, and operating the binding jig frame to separate a reinforcement framework from the jig frame;
s103, installing the template 10, enabling the movable trolley tool 2 to carry the steel reinforcement framework to walk to a fixed hydraulic template area, operating a hydraulic system after positioning is accurate, synchronously jacking 6 die closing oil cylinders 8 on one side, enabling the whole template 10 to be uniformly stressed when the hydraulic template is automatically closed, and installing top surface and bottom surface opposite-pulling screw rods;
s104, pouring concrete, after the template 10 is reinforced, pouring the concrete, and filling the concrete into the template by adopting a bucket, wherein the slump is controlled to be 160-200 mm;
s105, automatically removing the template, removing the counter-pulling screw rods on the top surface and the bottom surface when the strength of concrete reaches more than 2.5mpa, and operating the top to reversely push the oil cylinder so that the top oil cylinder tightly pushes the diaphragm plate; simultaneously, the mold closing oil cylinders on the two sides are operated to enable the template 10 to generate outward and downward displacement, and the mold removal is completed under the combined action of the reverse thrust oil cylinder and the mold closing oil cylinder;
s106, intelligent steam curing is carried out, and after the template 10 is disassembled, the trolley tool 2 is moved to a steam curing area to carry out steam curing;
s107, performing initial prestress tensioning, after steam curing, detecting the compressive strength of the curing test block under the same condition, wherein the strength reaches over 75 percent of the designed strength, and performing initial prestress tensioning;
and S108, transferring the movable trolley tool 2, after the beam slab is primarily tensioned, adjusting away the movable trolley tool, transferring the movable trolley tool 2 from a tensioning lifting area to a reinforcement binding area by using two 16t portal cranes, and starting the next cycle operation.
Preferably, in step S106 of the second embodiment, before the beam slab enters the steam-curing shed, the temperature in the shed is adjusted to be close to the temperature of the beam body, the temperature difference is within 5 ℃, after the beam body enters the steam-curing shed, the temperature starts to gradually rise, the temperature rise rate does not exceed 10 ℃/h, and the temperature decrease rate does not exceed 10 ℃/h;
the compressive strength of the concrete reaches more than 37.5mpa so as to carry out primary tensioning operation;
the steam curing temperature of the beam body is 43 ℃, and the steam curing time is more than 22.5 h.
Preferably, in step S107 of the second embodiment, the initial tension control stress is 60% of the design tension stress, after the initial tension is finished, the beam is transferred to the beam storage area by using two 100t gantry cranes for curing, and after the strength reaches more than 5Mpa and the age reaches more than 7 days, the final tension and the grouting are performed.
In the technical scheme, the fixed hydraulic template moving trolley tool and the T beam prefabrication construction process based on the fixed hydraulic template moving trolley tool 2 provided by the invention have the following beneficial effects:
according to the construction method, the fixed hydraulic template moving trolley tool 2 is adopted to perform T-beam prefabrication construction, hydraulic templates are assembled and fixed in a pouring area, the moving trolley tool 2 serves as a conveying system to be connected with various production areas in series, the production areas are divided into a steel bar binding area, a concrete pouring area, a steam curing area and a tensioning lifting area according to functions, the moving trolley tool 2 completes corresponding processes in the various areas, flow operation is formed through the moving trolley tool 2, production efficiency of beam pieces is improved, and quality of precast beams is improved.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (9)
1. Fixed hydraulic template removes platform truck frock, its characterized in that, this frock includes:
the embedded steel rail (3), the embedded steel rail (3) is configured to be a moving track of the moving trolley tool (2);
the wheel set (6) slides on the surface of the embedded steel rail (3) and drives the movable trolley tool (2) to move along the extending direction of the embedded steel rail (3); and
a pedestal structure (4) integrated on the top of the mobile trolley tool (2);
the upper end of the pedestal structure (4) is formed into a support body, the upper surface of the support body is provided with a thick steel plate (403) with the thickness of 6mm, and the thick steel plate (403) is used as a bottom plate of the prefabricated T-shaped beam;
this frock still includes:
a mold closing assembly;
the die assembly component comprises a plurality of groups of obliquely arranged die assembly oil cylinders (8) which are symmetrically arranged on two sides of the movable trolley tool (2).
2. The fixed hydraulic template moving trolley tool according to claim 1, wherein the wheel set (6) is divided into a driving wheel set and a driven wheel set;
the driving wheel sets are mounted at two ends of the moving trolley tool (2) in the length direction;
a plurality of groups of driven wheel sets are arranged between the driving wheel sets at the two ends along the length direction of the movable trolley tool (2);
the driving wheel set at one end of the movable trolley tool (2) is provided with two driving wheels which are symmetrically arranged along the width direction of the movable trolley tool (2), and the center distance between the two driving wheels is 1000 mm;
wheel set (6) through steel structure beam structure (5) integrated in on mobile trolley frock (2).
3. The fixed hydraulic template mobile trolley tool according to claim 2, wherein the steel structure beam structure (5) comprises:
the side plates (501) are arranged symmetrically and at intervals; and
a top plate (502) integrated at the upper end of the side plate (501);
the space between the two side plates (501) is an accommodating space of the wheel set (6), and the side plates (501) are provided with wheel shafts (7) extending along the horizontal direction;
the wheel set (6) is integrated on the steel girder structure (5) through the wheel shaft (7);
the pedestal structure (4) is supported on the steel beam structure (5) by the top plate (502).
4. A fixed hydraulic die plate moving trolley tooling according to claim 3, characterized in that the pedestal structure (4) comprises:
a frustum structure (401) with the cross section size gradually decreasing from one end close to the top plate (502) to one end far away from the top plate (502); and
a support structure (402) integrated at an upper end of the frustum structure (401);
the upper end of the support structure (402) is the thick steel plate (403).
5. The fixed hydraulic die plate moving trolley tool according to claim 4, characterized in that the length of the pedestal structure (4) is 42 m;
the traveling speed of the movable trolley tool (2) is less than 3 m/min;
a track foundation (1) is laid on site, the width of the track foundation (1) is 1955mm, and the thickness of the track foundation (1) at the position matched with the mobile trolley tool (2) is 300 mm;
the track foundation (1) is formed by pouring C30 concrete;
the height difference between the adjacent embedded steel rails (3) is not more than 10mm, the longitudinal slope of each embedded steel rail (3) is not more than 0.5%, and the deviation of the embedded steel rails (3) is within +/-3 mm;
the length of the movable trolley tool (2) is 173 m.
6. The fixed hydraulic die plate moving trolley tool according to claim 5, wherein the die assembly component comprises:
the die closing oil cylinders (8) are symmetrically arranged on two sides of the movable trolley tool (2);
bases are symmetrically arranged on the track foundation (1), a cylinder body of the die closing oil cylinder (8) is rotatably connected with one end, far away from the movable trolley tool (2), of the base through a rotating shaft, and a cylinder rod of the die closing oil cylinder (8) extends towards one side of the movable trolley tool (2) and is respectively connected with the templates (10) on two sides to drive the templates (10) on two sides to move oppositely to complete die closing;
the number of the die-closing oil cylinders (8) on one side of the movable trolley tool (2) is six, and the six die-closing oil cylinders (8) are arranged at intervals along the length direction of the pedestal structure (4).
The T-beam prefabrication construction process is characterized in that the T-beam prefabrication construction process is based on the fixed hydraulic template moving trolley tool according to any one of claims 1 to 6, and the construction process mainly comprises the following steps:
s101, construction preparation, namely dividing a steel bar binding area, a concrete pouring area, a steam curing area and a tensioning lifting area into a construction and installation functional area of a precast yard, completing assembly and debugging of a mobile trolley tool, and enabling a track to penetrate from the steel bar binding area to the tensioning lifting area;
s102, performing reinforcement binding operation on the movable trolley tool (2), positioning the movable trolley tool (2) and a reinforcement binding jig frame, binding web and top plate reinforcements, installing an end baffle, and operating the binding jig frame to separate a reinforcement framework from the jig frame;
s103, installing a template, moving a trolley tool to carry a steel reinforcement framework to a fixed hydraulic template area, operating a hydraulic system after accurate positioning, synchronously jacking 6 die closing oil cylinders on one side, keeping the whole template uniformly stressed when the hydraulic template is automatically closed, and installing top surface and bottom surface opposite-pulling screws;
s104, pouring concrete, after the template is reinforced, pouring the concrete, and filling the concrete into the template by adopting a bucket, wherein the slump is controlled to be 160-200 mm;
s105, automatically removing the template, removing the counter-pulling screw rods on the top surface and the bottom surface when the strength of concrete reaches more than 2.5mpa, and operating the top to reversely push the oil cylinder so that the top oil cylinder tightly pushes the diaphragm plate; simultaneously, the die closing oil cylinders (8) on the two sides are operated to enable the die plate to generate outward and downward displacement, and the die is removed under the combined action of the reverse thrust oil cylinder and the die closing oil cylinder (8);
s106, intelligent steam curing is carried out, and after the template is disassembled, the movable trolley tool (2) with the beam plate travels to a steam curing area to carry out steam curing;
s107, performing initial prestress tensioning, after steam curing, detecting the compressive strength of the curing test block under the same condition, wherein the strength reaches over 75 percent of the designed strength, and performing initial prestress tensioning;
s108, transferring the movable trolley tool (2), after the beam slab is primarily tensioned, adjusting away the movable trolley tool (2), transferring the movable trolley tool (2) from a tensioning lifting area to a reinforcement binding area by using two 16t portal cranes, and starting the next cycle operation.
8. The T-beam prefabrication construction process of claim 7, wherein in the step S106, before the beam slab enters the steam-curing shed, the temperature in the shed is adjusted to be close to that of the beam body, the temperature difference is within 5 ℃, after the beam body enters the steam-curing shed, the temperature starts to rise gradually, the temperature rise rate is not more than 10 ℃/h, and the temperature drop rate is not more than 10 ℃/h;
the compressive strength of the concrete reaches more than 37.5mpa so as to carry out primary tensioning operation;
the steam curing temperature of the beam body is 43 ℃, and the steam curing time is more than 22.5 h.
9. The T-beam prefabrication construction process of claim 7, wherein in the step S107, the initial tension control stress is 60% of the design tension stress, after the initial tension is finished, the beam is transferred to the beam storage area by two 100T portal cranes for curing, and after the strength reaches more than 5MPa and the age reaches more than 7 days, the beam is finally tensioned and pressed into slurry.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113752379A (en) * | 2021-09-15 | 2021-12-07 | 浙江交工集团股份有限公司 | Concrete T-beam prefabricating method adopting secondary tensioning process and movable pedestal |
| CN113997402A (en) * | 2021-11-17 | 2022-02-01 | 中铁一局集团有限公司 | Annular production line of prefabricated T roof beam |
| CN114559537A (en) * | 2022-03-14 | 2022-05-31 | 保利长大工程有限公司 | Can realize portable platform truck of beam slab annular production |
| CN114701040A (en) * | 2022-04-29 | 2022-07-05 | 保利长大工程有限公司 | double-T-shaped precast beam plate mould production process |
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2021
- 2021-07-06 CN CN202110759700.9A patent/CN113370384A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113752379A (en) * | 2021-09-15 | 2021-12-07 | 浙江交工集团股份有限公司 | Concrete T-beam prefabricating method adopting secondary tensioning process and movable pedestal |
| CN113997402A (en) * | 2021-11-17 | 2022-02-01 | 中铁一局集团有限公司 | Annular production line of prefabricated T roof beam |
| CN114559537A (en) * | 2022-03-14 | 2022-05-31 | 保利长大工程有限公司 | Can realize portable platform truck of beam slab annular production |
| CN114701040A (en) * | 2022-04-29 | 2022-07-05 | 保利长大工程有限公司 | double-T-shaped precast beam plate mould production process |
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