CN114770706A - Novel light T-beam prefabricating equipment and prefabricating, installing and constructing method - Google Patents

Novel light T-beam prefabricating equipment and prefabricating, installing and constructing method Download PDF

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Publication number
CN114770706A
CN114770706A CN202210455477.3A CN202210455477A CN114770706A CN 114770706 A CN114770706 A CN 114770706A CN 202210455477 A CN202210455477 A CN 202210455477A CN 114770706 A CN114770706 A CN 114770706A
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light
steel
flange
plate
prefabricating
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CN114770706B (en
Inventor
周宁
车承文
郭岭
刘昌杰
谢天
王星蕊
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CCCC First Highway Engineering Co Ltd
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CCCC First Highway Engineering Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/04Producing shaped prefabricated articles from the material by tamping or ramming
    • B28B1/045Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/245Curing concrete articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements 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
    • B28B23/04Arrangements 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/0002Auxiliary parts or elements of the mould
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • E01D2101/26Concrete reinforced

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

The invention discloses novel light T-beam prefabricating equipment and a prefabricating, mounting and constructing method, which comprise the following steps of: s1, resource allocation, centralized processing of steel bars, and allocation of fixed pedestals and steel side molds according to the number of light T-beams and the construction period; s2, binding steel bars and templates, designing a steel bar binding jig frame, directly binding the steel bar binding jig frame after the production line is processed, and then placing the steel bar binding jig frame into a T-beam prefabricated mold for pouring; s3, pouring concrete, wherein the pouring of the concrete adopts a layering and non-segmentation mode; s4, curing the light T-shaped beam; s5 hoisting and transporting the light T-shaped beam; s6 light T-beam installation. The prefabrication and installation construction method effectively solves the difficulty in the light T-beam construction process, improves the prefabrication quality of the components, breaks through the installation method, and has important significance for popularization of the light T-beam. After construction, the edge of the prefabricated part is linear and straight, the edge biting phenomenon is avoided, the appearance quality is good, the rework repair cost is saved, and the qualification rate of the steel bar protection layer on the top of the light T-beam roof can be improved to 100%.

Description

Novel light T-beam prefabricating equipment and prefabricating, mounting and constructing method
Technical Field
The invention relates to the technical field of light T-beams, in particular to novel light T-beam prefabricating equipment and a prefabricating, mounting and constructing method.
Background
The prefabricated light T beam is widely applied to highway high-grade highway bridge engineering, the upper structure of the light T beam consists of the light T beam, a steel truss beam and an ultra-wide wet joint, a structure with a continuous simple bridge deck is adopted, and the bearing capacity and the durability of the upper structure of the bridge can be directly determined by the guarantee of the prefabrication quality and the control of the installation precision.
In the prior art, two methods are mainly adopted during T-beam construction, one method is to erect a scaffold under a bridge to support a bottom die, and the scaffold is used as an operation platform for construction and pouring; the other type is that the bottom die is hung by an iron wire and fixed on the bridge floor, constructors carry out construction of steel bars and templates through simple hanging baskets, the whole structure is complex, the manufacturing process is complex, time and labor are wasted, and the production efficiency is low.
Disclosure of Invention
The invention aims to overcome the existing defects and provides novel light T-beam prefabricating equipment and a prefabricating and installing construction method.
In order to achieve the purpose, the invention provides the following technical scheme:
a novel light T-beam prefabricating device comprises a T-beam prefabricating die, the T-beam prefabricating device comprises a flange plate bottom die, a head sealing plate, side die plates, a bottom plate and a concrete pedestal, support legs are arranged at the bottoms of the side die plates and are connected with the ground, the side die plates are formed by welding channel steel and rectangular steel tubes, the concrete pedestal is arranged at the lower part in the middle of the left side die plate and the right side die plate and is connected with the ground, the left side die plate and the right side die plate are respectively and fixedly connected through a lower counter pull rod, adhesive tapes are arranged at the upper parts of the two sides of the concrete pedestal, balancing weights are arranged at the lower parts of the left side die plate and the right side die plate, water dripping lines are arranged at the inner sides of the left side die plate and the right side die plate, a comb plate is arranged at the inner sides of the flange plate side die plates, a flange plate bottom die is arranged at the upper parts of the flange plate side die plates, the flange plate bottom die is respectively connected with the left side die plate and the right side die plates through an upper counter pull rod, the whole front and back two sides that flange board die block, side form board, flange board side form and concrete pedestal are constituteed all are provided with the head board, flange board die block longitudinal direction intermediate position sets up the template cloth layering by two parallels of each other, be provided with a plurality of through-holes on the template cloth layering, flange board die block transverse direction is connected by the first flange board die block at both ends, the second flange board die block adjacent with first flange board die block and the third flange board die block in the middle of forming, the flange board side form is formed by the first flange board side form at both ends, is connected with the third flange board side form in the middle of the second flange board side form adjacent with first flange board side form and, first flange board side form position is provided with pre-buried sleeve regulating plate.
A prefabrication, installation and construction method of a novel light T beam is based on the novel light T beam prefabrication equipment and comprises the following steps:
s1 resource allocation
Centralized processing of reinforcing steel bars, production by full-time staff, and configuration of fixed pedestals and steel side molds according to the number of light T-beams and the construction period;
s2 steel bar binding and template
Designing a steel bar binding jig frame, finishing a semi-finished product by a production line, directly binding the steel bar on the jig frame after the production line is processed, and then placing the steel bar into a T-beam prefabricated mould for pouring;
s3 concrete pouring
C50 concrete is poured for the light T-beam, the concrete is poured in a layered and non-segmented mode, the first layer is poured until the lower flange plate and the web plate are chamfered, the second layer is poured until the web plate is two thirds high, and finally the top plate is poured; simultaneously, tamping is carried out by adopting a vibration method with attached vibration as a main part and inserted vibration as an auxiliary part; the pouring vibration in the mode can effectively remove air bubbles in the concrete, and the appearance quality is improved;
s4 light T beam health preserving
Pouring the light T-beam, placing a drip irrigation pipeline above the panel during curing, covering the curing geotextile, completely soaking the geotextile when the geotextile is just covered, and curing by using a drip irrigation technology for at least 7 days;
s5 light T-beam hoisting and transporting
Holes are reserved at two ends of the light T-shaped beam, and the distance between the holes and the beam ends at two sides is 80 cm; when the beam body is transported, the beam transporting gun carriage is additionally provided with 4 inclined struts matched with the steel wire ropes to fix the beam body, the number of the inclined struts is 2, and the inclined struts are supported at the chamfer angles of the flange plate and the web plate on the beam body to prevent the beam body from overturning in the transporting process; when in hoisting, JL32 finish rolling thread coarse steel bars, a special hoisting tool and an anchoring end tool are adopted for hoisting;
s6 light T-beam mounting
(1) T beam erection: a single coping is arranged on a single pier stud, the maximum clear distance between the coping is 2.58m, the front rail of the bridge girder erection machine is lengthened, the front rail adopts I35 type steel, and an I40 type steel diaphragm plate is added between the coping for local reinforcement, so that the full-width erection of the T-shaped beam is realized;
(2) installation of the section steel transverse partition plate: the positioning clamp is arranged on the shaped steel template, different clamping plates are replaced according to different beam lengths, the position of the embedded sleeve is ensured to meet the requirement of design allowable deviation, and the mounting precision and quality are improved;
(3) ultra-wide wet joint safety protection: the width of a wet joint of the upper structure of the light T-shaped beam is 1.58m, and in order to eliminate potential safety hazards, a tiled steel mesh is designed, the size is 1.5 multiplied by 2m, the steel mesh can bear 3KN concentrated load, and the walking requirement of constructors is met.
Further, in step S2, the reinforcement bed-jig includes independent setting' S end web bed-jig and roof bed-jig two parts, and end web bed-jig and roof bed-jig ligature simultaneously, later the reconnection get up, set up like this, because the reason of roof framework of steel reinforcement broad, the ligature time also can be shortened in addition simultaneously.
Further, in step S2, the cup-mouth anchor box end formwork is used to perform T-beam end construction at the anchor groove positions at both ends of the light T-beam, so that a steel pipe sleeve and an external grouting pipe in the prior art are eliminated, and the problem of difficult installation of an anchor groove steel sleeve and a lengthened grouting pipe in construction is avoided.
Further, in step S2, during reinforcement, adopt the pre-buried annular muscle locating fixture location embedded steel bar of roof, ensure that embedded steel bar length is unanimous, ensure that wet seam later stage ligature reinforcing bar interval satisfies the designing requirement, promote engineering entity quality.
Furthermore, in step S2, when the light T-beam top slab is poured, a concrete pad is additionally provided on the side contacting the bottom die, so that the problem of the percent of pass of the steel plate protective layer can be solved.
Further, in step S2, the light T-beam design specification: the main beams adopt a prestressed concrete light T-beam prefabricated structure, the cross sections of the main beams are 4 light T-beams, the whole section of the main beams is prefabricated, the distance between the main beams is 3.58m, and the side beams and the middle beams are all the same cross section; the height of the light T-shaped beam is 1.605 m; the thickness of the web is 0.22 m; the width of the upper flange plate is 2.0m, the thickness of the edge is 0.205m, the thickness of the bearing is 0.305m, and the bearing supports a bottom slope 1: 3; the width of the lower flange plate is 1.0m, the thickness of the edge is 0.22m, the thickness gradually changes to the thickness of the web plate, and the light T-shaped beam is cast by C50 concrete.
Further, in step S3, the attached high-frequency vibrators are arranged at a vibration pitch of 50cm in the longitudinal direction and 30cm in the vertical direction, and the vibration time is 20-30S.
Further, in step S5, when the girder transporting gun carrier is loaded, the center of gravity of the beam must fall on the longitudinal center line of the girder transporting trailer, the deviation is less than 20mm, the girder transporting gun carrier must pass after the welding of the steel diaphragm is completed, and the wheels run above the web plate in the process, so as to ensure the transportation safety of the beam.
Further, in step S6, when the T-beam is erected, a small-tonnage crown block is added beside the crown block to install the section steel diaphragm plate.
Compared with the prior art, the invention has the beneficial effects that: the novel light T-beam prefabricating equipment and the prefabricating, installing and constructing method have the following advantages:
the prefabrication and installation construction method is characterized in that prefabrication and installation are carried out in parallel, and various measures are adopted to ensure quality key points such as the qualification rate of the light T-beam steel bar protection layer, the dimensional qualification rate, the steel bar positioning, the connection quality of the panel and the steel beam shear nails and the like. Through the technical control of the prefabricating and mounting process of the concrete panel, the quality of the concrete panel is effectively guaranteed, meanwhile, the construction cost is reduced, the construction period is shortened, and the application value is improved.
The prefabricated installation construction method effectively solves the difficulty in the construction process of the light T-shaped beam, improves the prefabricated quality of the components, has a breakthrough in the installation method, and has important significance in the popularization of the light T-shaped beam. After construction, the edge of the prefabricated part is linear and straight, the edge biting phenomenon is avoided, the appearance quality is good, the rework repair cost is saved, and the qualification rate of the steel bar protection layer on the top of the light T-beam roof can be improved to 100%.
Drawings
FIG. 1 is a side view of a T-beam prefabricating mold in a novel lightweight T-beam prefabricating device according to the invention;
FIG. 2 is a top view of a flange plate bottom die in the novel light T-beam prefabricating equipment of the invention;
FIG. 3 is a top view of a flange plate side mold in the novel light T-beam prefabricating equipment;
FIG. 4 is a top view of a bottom die of a first flange plate in the novel light T-beam prefabricating equipment;
FIG. 5 is a top view of a second flange plate bottom die in the novel light T-beam prefabricating equipment of the invention;
FIG. 6 is a top view of a third flange plate bottom die in the novel light T-beam prefabricating equipment of the invention;
FIG. 7 is a top view of a first flange plate side mold in the novel light T-beam prefabricating device;
FIG. 8 is a top view of a second flange plate side mold in the novel light T-beam prefabricating equipment;
FIG. 9 is a top view of a third flange plate side mold in the novel light T-beam prefabricating equipment;
FIG. 10 is a structural diagram of an adjusting plate of a pre-buried sleeve in the novel light T-beam prefabricating equipment;
FIG. 11 is a schematic flow chart of a construction method for prefabricating and installing a novel light T-shaped beam;
FIG. 12 is a schematic structural view of a half-span mid-section of a light T-beam according to the present invention;
fig. 13 is a schematic structural view of a half-width beam end section of the light T-beam of the present invention.
In the figure, a bottom die of a flange plate 1, a cloth pressing strip of a template 101, a through hole 102, a head plate 2, a side die plate 3, a side die of a flange plate 4, a sleeve adjusting plate 401 embedded in advance, a water dripping line 5, an upper diagonal tie rod 6, a balancing weight 7, support legs 8, a lower diagonal tie rod 9, a concrete pedestal 10, an adhesive tape 11 and a comb plate 12 are arranged.
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 detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only, not by way of limitation, i.e., the embodiments described are intended as a selection of the best mode contemplated for carrying out the invention, not as a full mode. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Referring to fig. 1-13, the present invention provides the following technical solutions:
as shown in figures 1-10, a novel light T-beam prefabricating device comprises a T-beam prefabricating die, the T-beam prefabricating device comprises a flange plate bottom die 1, a head plate 2, side templates 3, a bottom plate 8 and a concrete pedestal 10, wherein the bottom of each side template 3 is provided with a support leg 8, the support legs 8 are connected with the ground, the side templates 3 are formed by welding channel steel and rectangular steel pipes, the lower part of the middle of each of the left and right side templates 3 is provided with the concrete pedestal 10, the concrete pedestal 10 is connected with the ground and is respectively fixedly connected with the left and right side templates 3 through a lower counter pull rod 9, the upper parts of the two sides of the concrete pedestal 10 are provided with adhesive tapes 11, the lower parts of the left and right side templates 3 are provided with a counterweight block 7, the inner sides of the left and right side templates 3 are provided with water dripping lines 5, the upper parts of the middle of the left and right side templates 3 are provided with the flange plate side dies 4, the inner sides of the flange plates 4 are provided with comb dies 12, the upper parts of the flange plate side dies 4 are provided with the flange plates 1, the flange plate bottom die 1 is connected with the left side die plate and the right side die plate 3 through the upper counter pull rod 6 respectively, the front side and the rear side of the whole body formed by the flange plate bottom die 1, the side die plates 3, the flange plate side die 4 and the concrete pedestal 10 are provided with the head plate 2, the middle position of the flange plate bottom die 1 in the longitudinal direction is provided with two mutually parallel template cloth pressing strips 101, a plurality of through holes 102 are formed in the template cloth pressing strips 101, the transverse direction of the flange plate bottom die 1 is formed by connecting the first flange plate bottom die at two ends, the second flange plate bottom die adjacent to the first flange plate bottom die and the third flange plate bottom die in the middle, the flange plate side die 4 is formed by connecting the first flange plate side die at two ends, the second flange plate side die adjacent to the first flange plate side die and the third flange plate side die in the middle, and the embedded sleeve adjusting plate 401 is arranged at the outer side die position of the first flange plate.
Example one
As shown in fig. 11 to 13, a novel light T-beam prefabricating apparatus and a prefabricating, mounting and constructing method thereof includes the steps of:
s1 resource allocation
Centralized processing of reinforcing steel bars, production by full-time staff, and configuration of fixed pedestals and steel side molds according to the number of light T-beams and the construction period;
s2 steel bar binding and template
Designing a steel bar binding jig frame, finishing a semi-finished product by a production line, directly binding the steel bar on the jig frame after the production line is processed, and then placing the steel bar into a T-beam prefabricated mould for pouring;
s3 concrete pouring
C50 concrete is poured for the light T-beam, the concrete is poured in a layered and non-segmented mode, the first layer is poured until the lower flange plate and the web plate are chamfered, the second layer is poured until the web plate is two thirds high, and finally the top plate is poured; meanwhile, tamping is carried out by adopting a vibrating method with attached vibration as a main part and inserted vibration as an auxiliary part; the pouring vibration in the mode can effectively remove air bubbles in the concrete and improve the appearance quality;
s4 light T-beam health preserving method
Pouring the light T-beam, placing a drip irrigation pipeline above the panel during curing, covering the curing geotextile, completely soaking the geotextile when the geotextile is just covered, and curing by using a drip irrigation technology for at least 7 days;
hoisting and transporting S5 light T-shaped beam
Holes are reserved at two ends of the light T-shaped beam, and the distance between the holes and the beam ends at two sides is 80 cm; when the beam body is transported, the beam transporting gun carriage is additionally provided with 4 inclined struts which are matched with the steel wire ropes to fix the beam body, the number of the steel wire ropes is 2, and the inclined struts are supported at the chamfer angles of the flange plate and the web plate on the beam body to prevent the beam body from overturning in the transporting process; during hoisting, JL32 finish rolling thread coarse steel bars, a special hoisting tool and an anchoring end tool are adopted for hoisting;
s6 light T-beam mounting
(1) T beam erection: a single capping beam is arranged on a single pier stud, the maximum net spacing between capping beams is 2.58m, the front rail of the bridge girder erection machine is lengthened, the front rail adopts I35 steel, and an I40 steel diaphragm plate is added between the capping beams for local reinforcement, so that the full-width erection of the T beam is realized;
(2) installation of the section steel transverse partition plate: the positioning clamp is arranged on the shaped steel template, different clamping plates are replaced according to different beam lengths, the position of the embedded sleeve is ensured to meet the requirement of design allowable deviation, and the mounting precision and quality are improved;
(3) ultra-wide wet joint safety protection: the width of a wet joint of the upper structure of the light T-shaped beam is 1.58m, and in order to eliminate potential safety hazards, a tiled steel mesh is designed, the size is 1.5 multiplied by 2m, the steel mesh can bear 3KN concentrated load, and the walking requirement of constructors is met.
Further, in step S2, the reinforcement bed-jig includes independent setting' S end web bed-jig and roof bed-jig two parts, and end web bed-jig and roof bed-jig ligature simultaneously, later reconnect, set up like this, because the reason of roof framework of steel reinforcement broad, the ligature time also can be shortened in the ligature simultaneously moreover.
Further, in step S2, the light T-beam two-end anchor groove portion is constructed by using the cup-shaped anchor box end formwork, so that a steel pipe sleeve and an external grouting pipe in the prior art are eliminated, and the problem that the anchor groove steel sleeve and the lengthened grouting pipe are difficult to install in construction is solved.
Example two
The difference between the present embodiment and the first embodiment is:
in the embodiment, in the step S2, when the steel bars are bound, the top plate embedded annular bar positioning fixture is used for positioning the embedded steel bars, so that the lengths of the embedded steel bars are consistent, the space between the bound steel bars at the later stage of the wet joint is ensured to meet the design requirement, and the quality of the engineering entity is improved; in the step S2, when the light T-beam top plate is poured, a concrete cushion block is additionally arranged on one side, which is in contact with the bottom die, so that the problem of the percent of pass of the steel plate protective layer can be solved; in step S2, the light T-beam design specification: the main beams adopt a prestressed concrete light T-beam prefabricated structure, the cross sections of the main beams are totally 4 light T-beams, the whole section of the main beams is prefabricated, the distance between the main beams is 3.58m, and the side beams and the middle beams are all the same cross section; the height of the light T-shaped beam is 1.605 m; the thickness of the web is 0.22 m; the width of the upper flange plate is 2.0m, the thickness of the edge is 0.205m, the thickness of the bearing is 0.305m, and the bearing supports a bottom slope 1: 3; the width of the lower flange plate is 1.0m, the thickness of the edge is 0.22m, the thickness gradually changes to the thickness of the web plate, and the light T-shaped beam is cast by C50 concrete.
EXAMPLE III
The difference between the present embodiment and the first embodiment is:
in the embodiment, in step S3, the attached high-frequency vibrators are arranged at a vibration interval of 50cm in the longitudinal direction and 30cm in the vertical direction, and the vibration time is 20-30S; in the step S5, when the girder transporting gun carriage is used for loading the girder, the gravity center of the girder piece is required to fall on the longitudinal central line of the girder transporting trailer, the deviation is less than 20mm, the girder transporting gun carriage is required to pass after the welding of the steel diaphragm is finished, and wheels run above a web plate in the process to ensure the safety of the transportation of the girder piece; in step S6, when the T beam is erected, a small-tonnage crown block is added beside the crown block to install the section steel diaphragm plate.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A novel light T-beam prefabricating device is characterized by comprising a T-beam prefabricating die, wherein the T-beam prefabricating device comprises a flange plate bottom die (1), a head plate (2), side templates (3), a bottom plate (8) and a concrete pedestal (10), support legs (8) are arranged at the bottom of the side templates (3), the support legs (8) are connected with the ground, the side templates (3) are formed by welding channel steel and rectangular steel pipes, the concrete pedestal (10) is arranged at the lower part of the middle of the left side template and the right side template (3), the concrete pedestal (10) is connected with the ground, the left side template and the right side template (3) are respectively and fixedly connected through a lower counter pull rod (9), adhesive tapes (11) are arranged on the upper parts of two sides of the concrete pedestal (10), balancing weights (7) are arranged at the lower parts of the left side template and the right side template (3), and water dripping lines (5) are arranged on the inner sides of the left side template and the right side template (3), upper portion is provided with flange board side form (4) in the middle of controlling two side form (3), flange board side form (4) inboard is provided with fishback (12), flange board side form (4) upper portion is provided with flange board die block (1), two side form (3) about flange board die block (1) is connected respectively through last counter pull rod (6), flange board die block (1), side form (3), flange board side form (4) and concrete pedestal (10) are constituteed whole front and back both sides all are provided with head board (2), flange board die block (1) longitudinal direction intermediate position sets up template cloth layering (101) by two parallels of each other, be provided with a plurality of through-holes (102) on template cloth layering (101), flange board die block (1) transverse direction is connected by the first flange board die block at both ends, the second flange board die block adjacent with first flange board die block and the third flange board die block in the middle of first flange board, flange side form (4) are formed by connecting the first flange side form at both ends, the second flange side form adjacent with first flange side form and middle third flange side form, first flange side form outside edge position is provided with pre-buried sleeve regulating plate (401).
2. A novel light T-beam prefabricating and installing construction method is based on the novel light T-beam prefabricating equipment of claim 1, and is characterized by comprising the following steps of:
s1 resource allocation
Centralized processing of reinforcing steel bars, production by full-time staff, and configuration of fixed pedestals and steel side molds according to the number of light T-beams and the construction period;
s2 steel bar binding and template
Designing a steel bar binding jig frame, finishing a semi-finished product by a production line, directly binding the steel bar on the jig frame after the production line is processed, and then placing the steel bar into a T-shaped beam prefabricated mould for pouring;
s3 concrete pouring
Pouring concrete in a layered non-segmented mode, wherein the first layer is poured to the chamfer angle of the lower flange plate and the web plate, the second layer is poured to the height of two thirds of the web plate, and finally a top plate is poured; meanwhile, tamping is carried out by adopting a vibrating method with attached vibration as a main part and inserted vibration as an auxiliary part; the pouring vibration in the mode can effectively remove air bubbles in the concrete and improve the appearance quality;
s4 light T beam health preserving
Pouring the light T-beam, placing a drip irrigation pipeline above the panel during curing, covering the curing geotextile, completely soaking the geotextile when the geotextile is just covered, and curing by using a drip irrigation technology for at least 7 days;
hoisting and transporting S5 light T-shaped beam
Holes are reserved at two ends of the light T-shaped beam, and the distance between the holes and the beam ends at two sides is 80 cm; when the beam body is transported, the beam transporting gun carriage is additionally provided with 4 inclined struts matched with the steel wire ropes to fix the beam body, the number of the inclined struts is 2, and the inclined struts are supported at the chamfer angles of the flange plate and the web plate on the beam body to prevent the beam body from overturning in the transporting process; during hoisting, JL32 finish rolling thread coarse steel bars, a special hoisting tool and an anchoring end tool are adopted for hoisting;
s6 light T-beam mounting
(1) T beam erection: a single capping beam is arranged on a single pier stud, the maximum net spacing between capping beams is 2.58m, the front rail of the bridge girder erection machine is lengthened, the front rail adopts I35 steel, and an I40 steel diaphragm plate is added between the capping beams for local reinforcement, so that the full-width erection of the T beam is realized;
(2) installation of the section steel transverse partition plate: the positioning clamp is arranged on the shaped steel template, different clamping plates are replaced according to different beam lengths, the position of the embedded sleeve is ensured to meet the requirement of design allowable deviation, and the mounting precision and quality are improved;
(3) ultra-wide wet joint safety protection: the width of a wet joint of the upper structure of the light T-shaped beam is 1.58m, and in order to eliminate potential safety hazards, a tiled steel mesh is designed, the size is 1.5 multiplied by 2m, the steel mesh can bear 3KN concentrated load, and the walking requirement of constructors is met.
3. The prefabrication, installation and construction method of the novel light T-shaped beam as claimed in claim 2, characterized in that: in step S2, the reinforcement bar binding jig includes two parts, namely a bottom web jig and a top plate jig, which are independently arranged, and the bottom web jig and the top plate jig are simultaneously bound and then connected.
4. The prefabrication, installation and construction method of the novel light T-shaped beam is characterized in that: and step S2, carrying out T-beam end construction on the anchor groove parts of the two ends of the light T-beam by using the cup-shaped anchor box end templates.
5. The prefabrication, installation and construction method of the novel light T-shaped beam is characterized in that: in step S2, when the steel bars are bound, the embedded steel bars are positioned by the top plate embedded annular bar positioning fixture.
6. The prefabrication, installation and construction method of the novel light T-shaped beam as claimed in claim 2, characterized in that: in the step S2, when the light T-shaped beam top plate is poured, a concrete cushion block is additionally arranged on one side, which is in contact with the bottom die.
7. The prefabrication, installation and construction method of the novel light T-shaped beam is characterized in that: in step S2, the light T-beam design specification: the main beams adopt a prestressed concrete light T-beam prefabricated structure, the cross sections of the main beams are 4 light T-beams, the whole section of the main beams is prefabricated, the distance between the main beams is 3.58m, and the side beams and the middle beams are all the same cross section; the height of the light T-shaped beam is 1.605 m; the thickness of the web is 0.22 m; the width of the upper flange plate is 2.0m, the thickness of the edge is 0.205m, the thickness of the bearing part is 0.305m, and the bottom slope is supported by 1: 3; the width of the lower flange plate is 1.0m, the edge thickness is 0.22m, and the thickness gradually changes to 0.28m at the web plate.
8. The prefabrication, installation and construction method of the novel light T-shaped beam as claimed in claim 2, characterized in that: in the step S3, the attached high-frequency vibrators are arranged at intervals of 50cm in the longitudinal direction and 30cm in the vertical direction, and the vibration time is 20-30S.
9. The prefabrication, installation and construction method of the novel light T-shaped beam is characterized in that: in step S5, when the girder transporting gun carrier is loaded, the center of gravity of the beam piece must fall on the longitudinal center line of the girder transporting trailer, the deviation is less than 20mm, the girder transporting gun carrier must pass after the welding of the steel diaphragm is completed, and the wheels are driven above the web plate in the process to ensure the safety of the transportation of the beam piece.
10. The prefabrication, installation and construction method of the novel light T-shaped beam as claimed in claim 2, characterized in that: in step S6, when the T-shaped beam is erected, a small-tonnage crown block is added beside the crown block to install the section steel diaphragm plate.
CN202210455477.3A 2022-04-27 2022-04-27 Light T-beam prefabrication equipment and prefabrication installation construction method Active CN114770706B (en)

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CN115157417A (en) * 2022-08-01 2022-10-11 中交二公局第四工程有限公司 Assembly type precast beam pedestal formwork structure and using method
CN117005536A (en) * 2023-09-22 2023-11-07 包钢集团工业与民用建筑工程有限公司 Building concrete prefabricated part and forming device thereof
CN118205093A (en) * 2024-05-21 2024-06-18 中铁四局集团有限公司 Vibration demolding equipment for T-shaped precast beam

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CN111745809A (en) * 2020-07-15 2020-10-09 安徽省路港工程有限责任公司 Automatic prefabricated light T-beam system and method
CN211682691U (en) * 2019-12-31 2020-10-16 山东铁鹰建设工程有限公司 Novel hydraulic profiling system
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CN105155428A (en) * 2015-10-26 2015-12-16 杭州江润科技有限公司 Operating-railway-crossing construction method for large assembly-type prestress concrete continuous T beam
CN211682691U (en) * 2019-12-31 2020-10-16 山东铁鹰建设工程有限公司 Novel hydraulic profiling system
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CN115157417A (en) * 2022-08-01 2022-10-11 中交二公局第四工程有限公司 Assembly type precast beam pedestal formwork structure and using method
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CN118205093A (en) * 2024-05-21 2024-06-18 中铁四局集团有限公司 Vibration demolding equipment for T-shaped precast beam

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