CN108342973A - Whole H profile steel-concrete composite beam bridge and construction method across prefabricated installation - Google Patents

Whole H profile steel-concrete composite beam bridge and construction method across prefabricated installation Download PDF

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Publication number
CN108342973A
CN108342973A CN201810152426.7A CN201810152426A CN108342973A CN 108342973 A CN108342973 A CN 108342973A CN 201810152426 A CN201810152426 A CN 201810152426A CN 108342973 A CN108342973 A CN 108342973A
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CN
China
Prior art keywords
profile steel
bridge
steel
whole
concrete
Prior art date
Application number
CN201810152426.7A
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Chinese (zh)
Inventor
周劲宇
蒋俊彦
周志祥
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重庆交通大学
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Application filed by 重庆交通大学 filed Critical 重庆交通大学
Priority to CN201810152426.7A priority Critical patent/CN108342973A/en
Publication of CN108342973A publication Critical patent/CN108342973A/en

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    • 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
    • E01D2/02Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/12Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125Grating or flooring for bridges
    • 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

Abstract

The invention discloses a kind of whole H profile steel concrete composite beam bridges and construction method across prefabricated installation, composite beam bridge includes H profile steel combination and pours the concrete bridge guidance tape closed in H profile steel group, H profile steel combination includes the H profile steel being arranged in juxtaposition along bridge wide direction, and the H profile steel is whole span length's degree along its length;Floorings construction is simple of the present invention, lifting are light-weight;Without factory process fabrication schedule when making, the difficulty for reducing later stage installation and setting up;Meanwhile H profile steel is avoided that the adverse effects such as welding residual stress, has more stable mechanical property, has better bearing capacity deposit, has with good durability;Reduction cost of manufacture that can be by a relatively large margin;Compared with the plate girder of the prior art, reduce welding or bolt technique, there is no uppity construction technology, the shaped steel combination beam quality such as prestressed structure steel strand tension and grouting, hollow slab girder hinge seam connection that can be effectively ensured, reduces the requirement to equipment and worker's technical capability.

Description

Whole H profile steel-concrete composite beam bridge and construction method across prefabricated installation
Technical field
The invention belongs to science of bridge building field, more particularly to a kind of whole H profile steel-concrete composite beam bridge across prefabricated installation And construction method.
Background technology
I-steel used in existing composite beam bridge generally uses batch production to make welding and forms I-shaped plate girder, and transport is extremely Each I-shaped plate girder of field sequential installation is in place on pier, and the cross member between each I-shaped plate girder of field conduct is coupled, then Cast-in-place vertically and horizontally wet seam forms steel-concrete composite beam bridge after cast-in-place concrete bridge guidance tape or installation precast block bridge guidance tape; Or the first casting concrete upper flange on steel I-beam forms single I-shaped steel-concrete composite beam, sequentially installs each combination beam In place on pier, the transverse splicing between each combination beam of field conduct, reproduction is poured composite beam bridge guidance tape longitudinal wet joint and is formed entirely Across composite beam bridge.
The major advantage of the above method is that transporting and hoisting is light-weight, relatively low to hanging device requirement, but is asked there is also following Topic:One side problem is that the welding job amount that traditional I-shaped plate girder makes is big, required precision is high, quality control is difficult, processing charges Height, and be difficult to avoid that site welding or bolt the fatigue problem of transverse joint, there are later stage security risks;Another aspect problem is Site workload is big, long in time limit, and cost of manufacture is higher;Implement transverse splicing between each beam on pier and pours bridge guidance tape (seam) Concrete quality is difficult to ensure;Girder steel is first installed, then install be coupled concrete bridge guidance tape there is also beam body dead weight only by I-steel The unfavorable operating mode that joist support is received, steel using amount are big;Existing composite beam bridge method of construction must also overlay concrete bridge deck pavement layer with true The flatness that bridge floor reaches needs is protected, dead load weight working procedure with together with is increased.
Therefore, it is necessary to being improved in existing I-steel-concrete composite beam bridge structure, reduce site welding work Amount, quality are easier to control, and avoid the requirement to splicing, welding precision, eliminate and carry out the tired of lateral connection seam on pier Labor problem prevents later stage security risk, reduces site operation program, significantly shortens on-site construction time, and reduce fabrication and installation Cost.
Invention content
In view of this, the object of the present invention is to provide a kind of whole H profile steel-concrete composite beam bridge across fabrication and installation and applying Work method reduces the workload made to the blanking of steel I-beam, assembly, welding high-precision, avoids carrying out scene on pier Lateral connection and casting concrete work, eliminating the fatigue problem of lateral connection causes, there are later stage security risk, to reduce scene Operational procedure and time significantly reduce fabrication and installation cost.
Whole H profile steel-concrete composite beam bridge across prefabricated installation of the present invention, including H profile steel are combined and are poured in H profile steel The concrete bridge guidance tape that group is closed, the H profile steel combination includes the H profile steel being arranged in juxtaposition along bridge wide direction, and the H profile steel is along length side To for whole span length's degree.
Further, concrete bridge guidance tape lower part formed by integrally casting corresponding with H profile steel has longitudinal rib, and concrete bridge guidance tape is described in Longitudinal rib is cast on the upper flange of the H profile steel.
Further, the lower wing plate bottom surface of the H profile steel is fixed with enhancing bottom steel plate.
Further, the H profile steel upper flange is respectively equipped with spats directing plate along longitudinal direction, the longitudinal rib along width both sides It is directly cast between the both sides spats directing plate.
Further, vertical floor I of putting more energy into is fixedly installed with pier top bearing corresponding section in H profile steel on web, described vertical The upper flange and lower wing plate of H profile steel is respectively fixedly connected in about I floor of putting more energy into, and its side is fixed on the web of H profile steel;H profile steel with Span centre section is corresponding to be fixedly installed floor II of vertically putting more energy into, the vertical connected H profile steel in II upper end of floor of putting more energy on web Upper flange, lower part there is wing plate to form L-shaped or inverted T-shaped structure, a side for floor II of vertically putting more energy into be fixed on the abdomen of H profile steel Plate, and lower wing plate of the wing plate away from H profile steel has a spacing, by vertically putting more energy between the adjacent H profile steel of H profile steel combination Floor I establishes lateral ties and establishes lateral ties by floor II of vertically putting more energy into.
Further, the enhancing bottom steel plate is more than the width dimensions of pier top holder segments in the width dimensions of span centre section.
Further, the cross section of the longitudinal rib is inverted trapezoidal, and spats directing plate and the inverted trapezoidal of the both sides are adapted It is tilted respectively to both sides oblique upper.
Further, H profile steel upper flange upper surface is fixed with the lifting lug for stretching out concrete bridge guidance tape, the lifting lug present position and cross It is corresponding to contacting.
The invention also discloses a kind of construction method of the whole H profile steel-concrete composite beam bridge across prefabricated installation, It is characterized in that:Include the following steps:
A. whole across arrangement H profile steel combination, arrange that the bed die being adapted with the roads Tong Qiao plate shape combines;
B. pour concrete bridge guidance tape and conserve formed it is whole across at H-type steel-concrete composite beam;
C. it is in place on pier to lift whole across H-type steel-concrete composite beam.
Further, the bed die combination in step a includes bed die and bed die support component, and the bed die is located at adjacent H profile steel Between and two sides it is corresponding with the side angle of inclination of the longitudinal rib of both sides;It is terraced that cross section, which is formed, at the lower part of the bed die The support construction of shape, support component include being clamped in two driving bodies of support construction both sides, the side of two driving bodies respectively Respectively with the inclined-plane of the side of the support construction of inverted trapezoidal structure cooperation, connect that be formed can between two driving bodies by screw rod The movement for changing distance in the width direction, for driving bed die to move up and down by inclined-plane.
The beneficial effects of the invention are as follows:Whole H profile steel-the concrete composite beam bridge and construction party across prefabricated installation of the present invention Method, using whole across elongated H profile steel, more traditional I-shaped plate girder significantly reduces processing and fabricating workload, avoids lateral weldering The existing fatigue problem of seam, can reduce cost of manufacture by a relatively large margin;The different enhancing bottom steel plate of width and thickness is set, can be expired Foot difference across footpath and class of loading have greatly expanded H profile steel as the suitable of combination beam steel construction to the needs of tension steel plate area Use range;Steel plate is guided in H profile steel upper flange and the binding site of bridge guidance tape concrete rib setting spats, had both acted as and has poured bridge The both seam guide template of road board concrete avoids spillage problem, and acts as the protective layer of steel-concrete combination interface, it is ensured that outer Boundary's gas cannot enhance structure durability along combination interface permeating corrosion;Simultaneously using across uniform cross sectional form and size entirely Ribbed slab bridge guidance tape without cross rib, can meet different across footpaths and lotus under H profile steel permanence condition by adjusting the height of rib of slab Carry needs of the grade to combination depth of beam;By the way that two trapezoid section backbars are arranged along inclined-plane and inverted trapezoidal wedge shaped support knot Structure cooperation holds up bridge road plate bed die, and bridge guidance tape is made to facilitate automatic demoulding, and it is whole across composite beam bridge to be easy to implement batch production construction;It is prefabricated Shi Caiyong primary concreting concrete bridge guidance tapes, both reduce working procedure, enhance the globality of combined bridge, and can save existing The material and process of pouring concrete bridge deck pavement;For creating the standardization bridge construction of road, inventor's early period can be used " the whole bridge transport of overall assembled bridge the sets up equipment and method " transporting and hoisting proposed is whole in place across composite beam bridge;For across The independent beam bridge construction or girder that number is few and height is little are replaced, and use crawler crane to install using pre-buried lifting lug whole across pre- H profile steel-concrete composite beam bridge processed is in place on pier, and avoiding existing composite beam bridge construction must implement laterally to join on pier The field operation of knot and casting concrete, greatly shortens on-site construction time, and avoids existing to composite beam bridge on pier Transverse splicing is implemented in field and casting concrete operates safety that may be present and hidden danger of quality;Simultaneously conventional composite beam is avoided to apply The unfavorable operating mode for only bearing girder dead weight in work by girder steel, can obviously save steel using amount.In short, the present invention's is whole across prefabricated installation H profile steel-concrete composite beam bridge and the more conventional composite beam bridge structure of construction method and construction can obviously reduce execute-in-place work It measures, quality is easily controllable, and the construction time significantly shortens, and construction cost is substantially reduced, and durability is remarkably reinforced.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the span centre segment cross-section structural schematic diagram of the present invention;
Fig. 2 is enlarged drawing at Figure 1A;
Fig. 3 is the pier top holder segments cross-sectional structure schematic diagram of the present invention;
Fig. 4 is the vertical structure schematic diagram of Fig. 1;
Fig. 5 is work progress figure;
Fig. 6 is bed die component end vertical view.
Specific implementation mode
Fig. 1 is the span centre segment cross-section structural schematic diagram of the present invention, and Fig. 2 is enlarged drawing at Figure 1A, and Fig. 3 is of the invention Pier top holder segments cross-sectional structure schematic diagram, Fig. 4 are the vertical structure schematic diagram of Fig. 1, as shown in the figure:The present embodiment it is whole across H profile steel-concrete composite beam bridge of prefabricated installation, including H profile steel combine and pour the concrete bridge guidance tape 1 closed in H profile steel group, institute It includes the H profile steel being arranged in juxtaposition along bridge wide direction to state H profile steel combination, and the H profile steel is whole span length's degree along its length.Girder steel is adopted With H profile steel, in manufacture, as whole H profile steel beam of overall length can significantly reduce steel construction cost (30- without welding processing 40%);Fatigue problem without transverse joint after construction;The peg 11 that Shear connection acts on is arranged in H profile steel upper flange upper surface, Details are not described herein.
In the present embodiment, 1 lower part of concrete bridge guidance tape formed by integrally casting corresponding with H profile steel has longitudinal rib 2, and concrete bridge guidance tape 1 It is cast on the upper flange 9 of the H profile steel by the longitudinal rib 2;Since H profile steel is standard component, change concrete when pouring Bridge road rib of slab height can meet the highly desired needs for wanting size of combination beam;So that steel dosage and distribution is met combination beam stress needs It wants, saves steel.
In the present embodiment, 6 bottom surface of lower wing plate of the H profile steel is fixed with enhancing bottom steel plate 5;Since H profile steel is standard component, The structure disclosure satisfy that the required tension lower wing plate intensity of combination beam bending strength.
In the present embodiment, the upper flange 9 of the H profile steel is respectively equipped with spats directing plate 8 along longitudinal direction, institute along width both sides Longitudinal rib 2 is stated directly to be cast between the both sides spats directing plate 8;The structure can avoid steel-coagulation after pouring longitudinal rib Native combination interface directly permeates corrosive effect by ambient atmosphere;It can be used as the guiding mould of concrete bridge road rib of slab side when construction Plate, to reduce the seam leakproof Disposal Measures of end template and H profile steel beam upper flange when concrete bridge guidance tape pours.
In the present embodiment, vertical floor I 41 of putting more energy into, institute is fixedly installed with pier top bearing corresponding section in H profile steel on web H profile steel is respectively fixedly connected in vertical about I 41 floor of putting more energy into upper flange 9 and lower wing plate 6 are stated, and its side is fixed on the abdomen of H profile steel Plate, attachment is generally using the plate face of welding and vertical floor I 41 of putting more energy into perpendicular to web;H profile steel is opposite with span centre section It should be fixedly installed vertical floor II 4 of putting more energy on web, vertical II 4 upper end of floor of putting more energy into is connected the upper flange of H profile steel, under There is wing plate formation L-shaped or inverted T-shaped structure, a side (side for including wing plate) for floor II of vertically putting more energy into be fixed on H-type in portion The web of steel, attachment is generally using the plate face of welding and vertical floor I 41 of putting more energy into perpendicular to web;And the wing plate is away from H The lower wing plate of shaped steel has spacing, is established laterally by floor I 41 of vertically putting more energy between the adjacent H profile steel of the H profile steel combination It contacts and lateral ties is established by floor II 4 of vertically putting more energy into;The present embodiment H profile steel web at the lateral ties of span centre section Setting forms L-shaped and vertically puts more energy into floor II 4, and floor II 4 of vertically putting more energy into up to H profile steel upper flange, vertically put more energy into floor II 4 by L-shaped Wing plate to H profile steel lower wing plate on stay enough welding operating spaces, while reducing to the weld seam of lower wing plate to ensure lower wing plate Tensile property;H profile steel beam-ends vertically put more energy into floor be meet bear end reaction needs thickening shape steel plate (floor of vertically putting more energy into I 41), support H profile steel upper flange and lower wing plate up and down, ensure the H profile steel integral strength at enhancing bearing.
Single channel steel (I-steel) can be selected according to H profile steel height for lateral ties or respectively a piece channel steel of setting adds scissors up and down The truss structure (in the case of H profile steel is higher-height) of support, lateral ties component floor of vertically putting more energy into corresponding with H profile steel beam I or vertical puts more energy into the welding of floor II.
In the present embodiment, the enhancing bottom steel plate 5 is more than the width of pier top holder segments in the width dimensions of span centre section Size;When practice of construction, the enhancing bottom steel plate 5 is more than the width of H profile steel lower wing plate in the width dimensions of sagging moment section, until The width dimensions for enhancing bottom steel plate after negative moment area are identical as the width dimensions of lower wing plate, are conducive to mitigate the weight of beam entirety.
In the present embodiment, the cross section of the longitudinal rib 2 is inverted trapezoidal, the spats directing plate 8 and inverted trapezoidal of the both sides Be adapted respectively to both sides oblique upper tilt, be conducive to stress and can according to it is highly desirable adjustment trapezium structure bevel edge angle.
In the present embodiment, H profile steel upper flange upper surface is fixed with the lifting lug 10 for stretching out concrete bridge guidance tape, residing for the lifting lug 10 Position is corresponding with lateral ties;As shown, in place for lifting by crane, uniform force and with specific aim force ensures that beam is whole Body is not destroyed by external stress;Girder steel top surface at lateral ties corresponds to web position welding setting and stretches out bridge road plate top surface Lifting lug 10, makes lifting force be directly passed to girder steel, avoid need on bridge guidance tape trepanning pass through cable bib girder lifting side The trouble of formula;Formed steel-concrete composite beam after lift again, any load case by Steel-Concrete Composite Sections joist support by, It can obviously reduce girder steel stress, saving steel dosage.
The invention also discloses a kind of construction method of the whole H profile steel-concrete composite beam bridge across prefabricated installation, Include the following steps:
A. whole across arrangement H profile steel combination, arrange that the bed die being adapted with the roads Tong Qiao plate shape combines;Specially:Prefabricated Whole across the H profile steel group of arrangement, which merges, in field (factory) implements lateral connection, i.e. transport H profile steel, enhancing steel lower wing plate, lateral ties component To bridge location field factories, assembly welding, because of the non-principal force structure weld seam of whole weld seams, weld seam quantity is few, and welding technique is wanted It asks relatively low, is easy to simple factory at the scene and implements;
B. pour concrete bridge guidance tape and conserve formed it is whole across at H-type steel-concrete composite beam;The installation i.e. in precasting yard (factory) Bridge road plate bed die pours bridge guidance tape concrete and forms whole across H-type steel-concrete composite beam, removes the bed die device of bridge guidance tape;
C. it is in place on pier to lift whole across H-type steel-concrete composite beam, pier refers to the bridge pier pier of bridge, This is repeated no more;The lifting lug for stretching out concrete bridge guidance tape is cut off, bridge asphalt pavement and expansion joint, railing construction are completed.
Lifting process is as shown in Figure 2 and Figure 3, and generally using 2 crawler type loop wheel machines, ground lifts entirely across composite beam bridge under bridge Structure is in place, and elongated hawser 12 can be used and sequentially pass through girder lifting lug and crane hook, until half bridge lifting lug is by elongated Hawser 12 is connect with crane hook, and each suspension centre stress equalization can be made by slowly rising suspension hook.
In the present embodiment, the bed die combination in step a includes bed die 13 and bed die support component, and the bed die 13 is located at phase Between adjacent H profile steel and two sides are corresponding with the side angle of inclination of longitudinal rib (adjacent longitudinal ribs of bridge guidance tape) of both sides, when So, the bed die two sides are corresponding with the angle of inclination of spats directing plate of both sides;The lower part of the bed die 13 forms transversal Face is the support construction 14 of inverted trapezoidal, and support component includes being clamped in two driving bodies 16,17 of 14 both sides of support construction respectively, The side of two driving bodies 16,17 is respectively the inclined-plane (gradient one coordinated with the side of the support construction 14 of inverted trapezoidal structure Cause), i.e., two driving bodies 16,17 are trapezoid longeron;Being formed by the connection of screw rod 15 between two driving bodies can be along width Direction changes the movement of distance, and the setting position of screw rod should avoid bed die, and details are not described herein;That is loosening and revolve using screw rod Tightly change the distance between two driving bodies, belongs to general Design of Mechanical Structure, as shown in fig. 6, driving body is in length direction On extend bed die, screw rod is arranged in the part extended, and can be respectively provided with screw rod at the both ends of length direction, ensure the equal of stress Even property;For driving bed die to move up and down by inclined-plane, i.e., make bed die along tiltedly by loosening screw rod after bridge guidance tape is formed Face sinks to demoulding;It is concrete bridge guidance tape bottom that concrete bridge guidance tape, which pours required bed die and uses monoblock type openworking template, top surface, Face needs shape;
As shown in figure 5, being jacked up by the side purse up of two driving bodies 16,17 when casting concrete by tightening screw rod 15 Bed die 13 is in place, causes two driving bodies 16,17 by loosening screw rod (can be understood as two sections is trapezoid when demoulding Beam) separation make bed die decline and be directly supported on two driving body top surfaces, then along longitudinal direction extract out bed die (trapezoid section back Make to reduce the smooth surface processing of friction in face), finally extract two driving bodies out.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this In the right of invention.

Claims (10)

1. a kind of whole H profile steel-concrete composite beam bridge across prefabricated installation, it is characterised in that:Including H profile steel combine and pour in The concrete bridge guidance tape that H profile steel group is closed, the H profile steel combination includes the H profile steel being arranged in juxtaposition along bridge wide direction, the H profile steel edge Length direction is whole span length's degree.
2. whole H profile steel-concrete composite beam bridge across prefabricated installation according to claim 1, it is characterised in that:The concrete Bridge guidance tape lower part formed by integrally casting corresponding with H profile steel has longitudinal rib, and concrete bridge guidance tape is cast in the H profile steel by the longitudinal rib Upper flange on.
3. whole H profile steel-concrete composite beam bridge across prefabricated installation according to claim 1, it is characterised in that:The H The lower wing plate bottom surface of shaped steel is fixed with enhancing bottom steel plate.
4. whole H profile steel-concrete composite beam bridge across prefabricated installation according to claim 2, it is characterised in that:The H Shaped steel upper flange is respectively equipped with spats directing plate along longitudinal direction along width both sides, and the longitudinal rib is directly cast in the both sides shield Between foot directing plate.
5. whole H profile steel-concrete composite beam bridge across prefabricated installation according to claim 1, it is characterised in that:H profile steel Vertical floor I of putting more energy into is fixedly installed on web with pier top bearing corresponding section, vertical about I floor of putting more energy into is respectively fixedly connected The upper flange and lower wing plate of H profile steel, and its side is fixed on the web of H profile steel;H profile steel is corresponding with span centre section on web The vertical floor II of putting more energy into of fixed setting, the upper flange of the vertical connected H profile steel in II upper end of floor of putting more energy into, lower part has wing plate shape A side of L-shaped or inverted T-shaped structure, floor II of vertically putting more energy into is fixed on the web of H profile steel, and the wing plate is away from H profile steel Lower wing plate has spacing, establishes lateral ties by floor I of vertically putting more energy between the adjacent H profile steel of the H profile steel combination and leads to It crosses floor II of vertically putting more energy into and establishes lateral ties.
6. whole H profile steel-concrete composite beam bridge across prefabricated installation according to claim 3, it is characterised in that:The increasing Strong bottom steel plate is more than the width dimensions of pier top holder segments in the width dimensions of span centre section.
7. whole H profile steel-concrete composite beam bridge across prefabricated installation according to claim 4, it is characterised in that:It is described vertical It is inverted trapezoidal to the cross section of rib, the spats directing plate of the both sides is adapted with inverted trapezoidal to be tilted to both sides oblique upper respectively.
8. whole H profile steel-concrete composite beam bridge across prefabricated installation according to claim 5, it is characterised in that:H profile steel Upper flange upper surface is fixed with the lifting lug for stretching out concrete bridge guidance tape, and the lifting lug present position is corresponding with lateral ties.
9. a kind of whole H profile steel-concrete composite beam bridge across prefabricated installation described in claim 1 to 8 any claim Construction method, it is characterised in that:Include the following steps:
A. whole across arrangement H profile steel combination, arrange that the bed die being adapted with the roads Tong Qiao plate shape combines;
B. pour concrete bridge guidance tape and conserve formed it is whole across at H-type steel-concrete composite beam;
C. it is in place on pier to lift whole across H-type steel-concrete composite beam.
10. construction method according to claim 5, it is characterised in that:Bed die combination in step a includes bed die and bed die Support component, the bed die is between adjacent H profile steel and two sides are corresponding with the side angle of inclination of the longitudinal rib of both sides; The support construction that cross section is inverted trapezoidal is formed at the lower part of the bed die, and support component includes being clamped in support construction both sides respectively Two driving bodies, the sides of two driving bodies is respectively the inclined-plane coordinated with the side of the support construction of inverted trapezoidal structure, two The movement to be formed and can change distance in the width direction is connected between a driving body by screw rod, for driving bottom by inclined-plane Mould moves up and down.
CN201810152426.7A 2018-02-14 2018-02-14 Whole H profile steel-concrete composite beam bridge and construction method across prefabricated installation CN108342973A (en)

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CN110055871A (en) * 2019-05-09 2019-07-26 周劲宇 Full assembled B-G connection steel-concrete composite beams bridge
CN110154230A (en) * 2019-07-01 2019-08-23 浙江省交通规划设计研究院有限公司 A kind of method for prefabricating and construction method of steel plate combination beam bridge panel

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CN204662235U (en) * 2015-05-19 2015-09-23 安徽省交通规划设计研究总院股份有限公司 A kind of steel plate combination T beam bridge
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Publication number Priority date Publication date Assignee Title
CN110055871A (en) * 2019-05-09 2019-07-26 周劲宇 Full assembled B-G connection steel-concrete composite beams bridge
CN110154230A (en) * 2019-07-01 2019-08-23 浙江省交通规划设计研究院有限公司 A kind of method for prefabricating and construction method of steel plate combination beam bridge panel

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