CN117468360A - Construction method of prefabricated steel diaphragm corrugated steel web combined small box beam - Google Patents
Construction method of prefabricated steel diaphragm corrugated steel web combined small box beam Download PDFInfo
- Publication number
- CN117468360A CN117468360A CN202311534273.XA CN202311534273A CN117468360A CN 117468360 A CN117468360 A CN 117468360A CN 202311534273 A CN202311534273 A CN 202311534273A CN 117468360 A CN117468360 A CN 117468360A
- Authority
- CN
- China
- Prior art keywords
- steel
- plate
- small box
- corrugated
- combined small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
- E01D2101/285—Composite prestressed concrete-metal
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a construction method of a prefabricated assembled steel diaphragm plate corrugated steel web combined small box girder, which comprises the following specific steps: performing bridge design and determining parameters of all parts; prefabricating the corrugated steel web combined small box girder in a factory or in a prefabrication site according to a design drawing: transporting and hoisting the prefabricated corrugated steel web combined small box girder on a bridge abutment; the transverse bridge is spliced with the outer transverse steel baffle plate component of the adjacent two corrugated steel web combined small box beams through a steel connecting component and bolts; the concrete top plates of the two adjacent corrugated steel web combined small box girders are connected with each other through cast-in-situ reinforced concrete wet joints; finishing transverse splicing of each bridge span corrugated steel web combined small box girder; longitudinally splicing and assembling the corrugated steel web combined small box girder; and finishing the construction of other auxiliary facilities of the bridge. The combined small box girder has the advantages of convenient transverse connection construction, short construction period, high construction quality, and obvious advantages in construction process, later bridge maintenance and engineering cost reduction.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a construction method of a prefabricated assembled steel diaphragm plate corrugated steel web combined small box girder.
Background
The traditional prefabricated small box girder web is made of concrete, has large weight and is easy to crack, so that the traditional prefabricated small box girder web is mostly suitable for bridges with small spans (below 40 m). The corrugated steel web has the characteristics of excellent stability and no resistance to axial force, so that the prestress can be effectively loaded on the concrete top plate and the prestress concrete bottom plate; in addition, the corrugated steel web concrete prefabricated combined box girder bridge reduces the dead weight of the structure, is simple and convenient to construct, and can effectively shorten the construction period, so that the corrugated steel web concrete prefabricated combined box girder bridge is popularized and applied in the span of large and medium-sized bridges (more than 50 m). The prefabricated corrugated steel web small box girder is a novel steel-concrete combined structure bridge.
However, the prefabricated corrugated steel web small box girder applied in the current engineering has a reinforced concrete structure, the construction of the joint of the corrugated steel web and the concrete diaphragm is complex, and the steel bar binding and the formwork supporting of the prefabricated Liang Tishi diaphragm are difficult; the corrugated steel web passes through the diaphragm plate, so that the connection between the diaphragm plate in the box body and the stressed main rib of the diaphragm plate outside the box body is cut off, and the stress of the diaphragm plate is not facilitated; after the corrugated steel web small box girder is hoisted to a bridge pier, the transverse connection between the girders is generally a cast-in-situ reinforced concrete structure. The construction of the cast-in-situ wet joint of the reinforced concrete diaphragm plate needs to be operated under the beam, is high-altitude operation, is inconvenient and unsafe, needs to be maintained for 28 days after the concrete pouring is finished, and is a limiting node for quick construction. During the concrete curing of the transverse connection diaphragm plate, the construction live load on the beam body and the vibration of the beam body caused by a construction vehicle can influence the construction quality of the diaphragm plate, and the vibration is also one of the reasons that the reinforced concrete diaphragm plate is easy to crack after the small box girder bridge is used for a long time.
In view of the above disadvantages, the existing fabricated corrugated steel web small box girder has certain limitations in the practical application process.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a construction method of a prefabricated assembled steel diaphragm plate corrugated steel web combined small box girder.
The invention adopts the following technical scheme to realize the aim:
the construction method of the prefabricated assembled steel diaphragm plate corrugated steel web plate combined small box girder comprises the following specific steps:
s1, bridge design is carried out, and parameters of all parts are determined;
s2, prefabricating the corrugated steel web combined small box girder in a factory or in a prefabricating place according to a design drawing:
the prefabrication method comprises the following steps:
cutting steel plates of all parts according to the design size for the steel connecting assembly, forming a plurality of connecting holes on the connecting steel plates of the connecting pieces, welding and assembling, and then welding uniformly arranged connecting piece pegs on the steel plates at the top of the connecting pieces of the steel connecting assembly;
cutting steel plates of all parts of the inner transverse steel baffle plate assembly according to the design size, welding and assembling, and then welding uniformly arranged inner baffle plate studs on the top steel plates of the inner baffle plates and the bottom steel plates of the inner baffle plates of the inner transverse steel baffle plate assembly;
cutting steel plates of all parts of the outer transverse steel baffle plate assembly according to the design size, welding and assembling, and then welding uniformly arranged outer baffle plate studs on the steel plates at the top of the outer baffle plate of the outer transverse steel baffle plate assembly;
for the corrugated steel web assembly, firstly punching and processing a corrugated steel plate, then arranging holes for anchor steel bars to pass through at the design positions of the two ends of the corrugated steel plate, and then welding a top support steel plate and a bottom support steel plate at the two ends of the corrugated steel plate;
binding a fixed bottom plate steel bar on a prefabricated pedestal, and arranging a bottom plate prestress steel beam corrugated pipe; fixing a corrugated steel web assembly on the bottom plate steel reinforcement framework according to the designed inclination angle; installing all the inner transverse steel baffle plate assemblies and all the outer transverse steel baffle plate assemblies, and welding the inner baffle plate steel web plates of the inner transverse steel baffle plate assemblies and the outer baffle plate steel web plates of the outer transverse steel baffle plate assemblies with the corrugated steel plates; welding an outer diaphragm bottom steel plate of the outer transverse steel diaphragm assembly with a bottom supporting steel plate;
installing a bottom plate template, installing a top plate template, binding steel bars in the top plate, and installing a pier top hogging moment prestress steel beam corrugated pipe in a top plate steel bar framework;
pouring concrete of the bottom plate and concrete of the top plate, curing the concrete, removing all templates after the concrete reaches the design strength, and tensioning prestressed steel bundles of the side beam bottom plate and prestressed steel bundles of the middle beam bottom plate;
obtaining a prefabricated corrugated steel web combined small box girder;
s3, transporting and hoisting the prefabricated corrugated steel web combined small box girder on a bridge abutment;
s4, splicing the outer transverse steel partition plate assemblies of the two adjacent corrugated steel web combined small box girders by the transverse bridge through a steel connecting assembly and bolts;
s5, the concrete top plates of the two adjacent corrugated steel web combined small box girders are mutually connected through cast-in-situ reinforced concrete wet joints;
s6, repeating the steps S4-S5 to finish transverse splicing of each bridge span corrugated steel web combined small box girder;
s7, longitudinally splicing and assembling the corrugated steel web combined small box girder;
binding longitudinal connecting ribs and stirrups between the top plate and the bottom plate of the adjacent bridge span, and pouring concrete to form a reinforced concrete beam; when the concrete strength of the reinforced concrete beam reaches the design strength, symmetrically stretching prestressed steel bundles of the side beam top plate and the middle beam top plate of the hogging moment of the pier top by taking the central line of the single bridge as an axis to form a multi-span continuous beam system; then, at the bridge pier of the longitudinal splicing of the corrugated steel web combined small box girder, converting the two rows of temporary supports into one row of permanent supports;
s8, completing construction of other auxiliary facilities of the bridge.
In step S1, when designing bridges, determining the number of edge beam assemblies and center beam assemblies required by each bridge span; determining the width of a wet joint between the steel connecting component and cast-in-situ reinforced concrete; determining parameters of reinforcement bars, side beam top plate prestress steel bundles, side beam bottom plate prestress steel bundles, middle beam top plate prestress steel bundles and middle beam bottom plate prestress steel bundles of the corrugated steel web combined small box girder; parameters of the steel plates of each part of the steel connecting assembly, the inner transverse steel baffle assembly, the outer transverse steel baffle assembly and the corrugated steel web assembly are determined.
The concrete operation of the cast-in-situ reinforced concrete wet joint construction in the step S5 is as follows: and installing a wet joint bottom template by adopting a hanging die method, binding wet joint steel bars of a top plate, and then pouring concrete.
The beneficial effects of the invention are as follows: the combined small box girder has the advantages of convenient transverse connection construction, short construction period, high construction quality, and obvious advantages in construction process, later bridge maintenance and engineering cost reduction.
Drawings
FIG. 1 is a schematic view of a combined small box girder of the present invention assembled by two side girder components;
FIG. 2 is a schematic view of the assembled side sill assembly and center sill assembly of the present invention;
FIG. 3 is a schematic view of the assembled small box girder of the present invention assembled by two side girder components and two middle girder components;
FIG. 4 is a perspective view of a side rail assembly of the present invention;
FIG. 5 is a front view of the side rail assembly of the present invention;
FIG. 6 is a perspective view of a center sill assembly of the present invention;
FIG. 7 is a front view of the center sill assembly of the present invention;
FIG. 8 is a perspective view of a steel connection assembly of the present invention;
FIG. 9 is a perspective view of the inner transverse steel spacer assembly of the present invention;
FIG. 10 is a perspective view of the outer transverse steel spacer plate assembly of the present invention;
FIG. 11 is a perspective view of a corrugated steel web assembly of the present invention;
FIG. 12 is a schematic view of the longitudinal connection of a corrugated steel web composite box girder of the present invention;
FIG. 13 is a schematic view of the corrugated steel web composite box girder of the present invention after the temporary support is converted into a permanent support after being longitudinally connected;
in the figure: 1-a side beam assembly; 2-a center sill assembly; 3-steel connection assembly; 4-cast-in-situ reinforced concrete wet joints; 5-bolts; 6-an inner transverse steel partition plate assembly; 7-an outer transverse steel baffle assembly; 8-wave-shaped steel web components; 9-a reinforced concrete beam; 10-temporary support; 11-permanent support;
101-side beam top plate; 102-a side beam bottom plate; 103-edge beam connecting steel bars; 104-a boundary beam top plate prestress steel beam; 105-prestress steel bundles of the side beam bottom plate;
201-a middle beam top plate; 202-a middle beam bottom plate; 203-connecting reinforcing steel bars of the middle beam; 204-a middle beam top plate prestress steel beam; 205-a middle beam bottom plate prestress steel beam;
301-connecting piece steel webs; 302-a connector top steel plate; 303-connecting piece bottom steel plate; 304-connector pegs; 305-connector stiffener plates; 306-connecting piece connecting steel plates;
601-inner separator steel web; 602-an inner partition top steel plate; 603-an inner partition bottom steel plate; 604-inner separator peg; 605-manhole; 606-inner separator stiffening steel plates;
701-outer separator steel web; 702-an outer separator top steel plate; 703-an outer separator bottom steel plate; 704-outer spacer peg; 705-outer baffle stiffening steel plates; 706-connecting the outer partition plate with a steel plate;
801-corrugated steel sheet; 802-top support steel plate; 803-bottom support steel plate; 804-anchoring the steel bars; 805-reinforcing connection bars;
the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the illustrated embodiments are provided for illustration only and are not intended to limit the scope of the present invention. The invention is more particularly described by way of example in the following paragraphs with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
the combined small box girder of each bridge span of the prefabricated assembled steel diaphragm plate corrugated steel web combined small box girder is formed by transversely assembling two side girder assemblies 1 or by transversely assembling two side girder assemblies 1 and a plurality of middle girder assemblies 2 in the middle, as shown in figures 1 to 3.
The boundary beam assembly 1 is shown in fig. 4 to 5, and comprises a boundary beam top plate 101 and a boundary beam bottom plate 102, two front-back waveform steel web assemblies 8 are arranged between the boundary beam top plate 101 and the boundary beam bottom plate 102, a plurality of boundary beam steel diaphragm plates in left-right directions are arranged between the boundary beam top plate 101 and the boundary beam bottom plate 102, each boundary beam steel diaphragm plate comprises an inner transverse steel diaphragm plate assembly 6 and an outer transverse steel diaphragm plate assembly 7, the inner transverse steel diaphragm plate assembly 6 is positioned between the two waveform steel web assemblies 8, the outer transverse steel diaphragm plate assembly 7 is arranged on one side of the waveform steel web assemblies 8 corresponding to the inner transverse steel diaphragm plate assembly 6, and the outer transverse steel diaphragm plate assembly 7 is close to the connecting end of the boundary beam assembly 1;
the side of the boundary beam top plate 101 is embedded with boundary beam connecting steel bars 103, the left and right sides of the inside of the boundary beam top plate 101 are symmetrically provided with a plurality of boundary beam top plate prestress steel bundles 104 in the front-back direction, and the inside of the boundary beam bottom plate 102 is provided with a plurality of boundary beam bottom plate prestress steel bundles 105 in the front-back direction.
The middle beam assembly 2 is shown in fig. 6 to 7, and comprises a middle beam top plate 201 and a middle beam bottom plate 202, two front-back waveform steel web assemblies 8 are arranged between the middle beam top plate 201 and the middle beam bottom plate 202, a plurality of left-right middle beam steel diaphragm plates are arranged between the middle beam top plate 201 and the middle beam bottom plate 202, each middle beam steel diaphragm plate comprises an inner transverse steel diaphragm plate assembly 6 and two outer transverse steel diaphragm plate assemblies 7, the inner transverse steel diaphragm plate assemblies 6 are positioned between the two waveform steel web assemblies 8, the two outer transverse steel diaphragm plate assemblies 7 are correspondingly arranged at two sides of the inner transverse steel diaphragm plate assemblies 6, and the waveform steel web assemblies 8 are positioned between the outer transverse steel diaphragm plate assemblies 7 and the inner transverse steel diaphragm plate assemblies 6;
the middle beam connecting steel bars 203 are pre-buried on both sides of the middle beam top plate 201, a plurality of front-back middle beam top plate prestress steel bundles 204 are symmetrically arranged on the left side and the right side of the inside of the middle beam top plate 201, and a plurality of front-back middle beam bottom plate prestress steel bundles 205 are arranged inside the middle beam bottom plate 202.
The two outer transverse steel partition plate assemblies 7 which are butted with each other are connected through the steel connecting assembly 3.
The beam top plate 101, the middle beam top plate 201 of the side beam bottom plate 102 and the middle beam bottom plate 202 are of reinforced concrete structures.
A cast-in-situ reinforced concrete wet joint 4 is arranged between two adjacent side beam top plates 101 or between the adjacent side beam top plates 101 and the middle beam top plate 201.
The steel connecting assembly 3 is shown in fig. 8 and comprises a connecting piece steel web 301, a connecting piece top steel plate 302 is arranged at the top of the connecting piece steel web 301, a connecting piece bottom steel plate 303 is arranged at the bottom of the connecting piece steel web, a plurality of connecting piece pegs 304 are arranged on the upper surface of the connecting piece top steel plate 302, the connecting piece pegs 304 are connected inside a cast-in-situ reinforced concrete wet joint 4, a plurality of vertical connecting piece stiffening steel plates 305 are arranged on the front side wall and the rear side wall of the connecting piece steel web 301, connecting piece connecting steel plates 306 are arranged on the left side and the right side of the connecting piece steel web 301, and a plurality of connecting holes are formed in the connecting piece connecting steel plates 306.
The inner transverse steel partition plate assembly 6 is shown in fig. 9, and comprises an inner partition plate steel web 601, an inner partition plate top steel plate 602 is arranged at the top of the inner partition plate steel web 601, an inner partition plate bottom steel plate 603 is arranged at the bottom of the inner partition plate steel web, a plurality of inner partition plate studs 604 are arranged on the upper surface of the inner partition plate top steel plate 602 and the lower surface of the inner partition plate bottom steel plate 603, the inner partition plate studs 604 on the upper surface of the inner partition plate top steel plate 602 are connected in the boundary beam top plate 101 or the middle beam top plate 201, the inner partition plate studs 604 on the lower surface of the inner partition plate bottom steel plate 603 are connected in the boundary beam bottom plate 102 or the middle beam bottom plate 202, a manhole 605 is formed in the middle of the inner partition plate steel web 601, and inner partition plate stiffening steel plates 606 are arranged on the periphery of the manhole 605 on two sides of the inner partition plate steel web 601.
The outer transverse steel diaphragm assembly 7 is shown in fig. 10, and comprises an outer diaphragm steel web 701, wherein an outer diaphragm top steel plate 702 is arranged at the top of the outer diaphragm steel web 701, an outer diaphragm bottom steel plate 703 is arranged at the bottom of the outer diaphragm steel web, a plurality of outer diaphragm bolts 704 are arranged on the upper surface of the outer diaphragm top steel plate 702, the outer diaphragm bolts 704 are connected in the boundary beam top plate 101 or the middle beam top plate 201, outer diaphragm stiffening steel plates 705 are symmetrically arranged on two sides of the outer diaphragm steel web 701, an outer diaphragm connecting steel plate 706 is arranged at the outer end of the outer diaphragm steel web 701, and a plurality of connecting holes are formed in the outer diaphragm connecting steel plate 706;
the outer spacer connecting steel plate 706 is fixedly connected to the adjacent connecting member connecting steel plate 306 by bolts 5.
The corrugated steel web assembly 8 is shown in fig. 11, and comprises a corrugated steel plate 801, wherein the top of the corrugated steel plate 801 is penetrated into the side beam top plate 101 or the middle beam top plate 201, the bottom of the corrugated steel plate 801 is penetrated into the side beam bottom plate 102 or the middle beam bottom plate 202, a top supporting steel plate 802 is arranged at the upper end of the corrugated steel plate 801 corresponding to the lower surface of the side beam top plate 101 or the lower surface of the middle beam top plate 201, a bottom supporting steel plate 803 is arranged at the lower end of the corrugated steel plate 801 corresponding to the upper surface of the side beam bottom plate 102 or the upper surface of the middle beam bottom plate 202, a plurality of anchor steel bars 804 are penetrated into the part of the corrugated steel plate 801 penetrating into the side beam top plate 101 or the middle beam top plate 201, and a reinforcing connecting steel bar 805 is bound on the anchor steel bars 804;
one side of the corrugated steel plate 801 is welded with an adjacent inner separator steel web 601 and the other side is welded with an adjacent outer separator steel web 701;
the bottom support steel plate 803 is welded to the adjacent outer separator bottom steel plate 703.
The construction method of the prefabricated assembled steel diaphragm plate corrugated steel web combined small box girder comprises the following specific steps:
s1, designing bridges, and determining the number of pieces of boundary beam assemblies 1 and center beam assemblies 2 required by each bridge span; determining the width of the steel connecting assembly 3 and the cast-in-situ reinforced concrete wet joint 4; parameters of reinforcement bars, side beam top plate prestress steel bundles 104, side beam bottom plate prestress steel bundles 105, middle beam top plate prestress steel bundles 204 and middle beam bottom plate prestress steel bundles 205 of the corrugated steel web combined small box girder are determined; parameters of all the steel plates of the steel connecting assembly 3, the inner transverse steel baffle assembly 6, the outer transverse steel baffle assembly 7 and the corrugated steel web assembly 8 are determined;
s2, prefabricating the corrugated steel web combined small box girder in a factory or in a prefabricating place according to a design drawing:
the prefabrication method comprises the following steps:
for the steel connecting component 3, cutting steel plates of all parts according to the design size, forming a plurality of connecting holes on the connecting steel plates 306 of the connecting pieces, welding and assembling, and then welding uniformly arranged connecting piece pegs 304 on the top steel plates 302 of the connecting pieces of the steel connecting component 3;
for the inner transverse steel diaphragm assembly 6, cutting steel plates of all parts according to the designed size, welding and assembling, and then welding uniformly arranged inner diaphragm bolts 604 on the inner diaphragm top steel plate 602 and the inner diaphragm bottom steel plate 603 of the inner transverse steel diaphragm assembly 6;
for the outer transverse steel diaphragm assembly 7, cutting steel plates of all parts according to the design size, welding and assembling, and then welding uniformly arranged outer diaphragm bolts 704 on the top steel plates 702 of the outer diaphragms of the outer transverse steel diaphragm assembly 7;
for the corrugated steel web assembly 8, firstly punching a corrugated steel plate 801, then arranging holes for the anchor reinforcing steel bars 804 to pass through at the design positions of the two ends of the corrugated steel plate 801, and then welding a top support steel plate 802 and a bottom support steel plate 803 at the two ends of the corrugated steel plate 801;
binding a fixed bottom plate steel bar on a prefabricated pedestal, and arranging a bottom plate prestress steel beam corrugated pipe; fixing a corrugated steel web assembly 8 on the bottom plate steel reinforcement framework according to the designed inclination angle; installing all the inner transverse steel diaphragm assemblies 6 and the outer transverse steel diaphragm assemblies 7, and welding the inner diaphragm steel webs 601 of the inner transverse steel diaphragm assemblies 6 and the outer diaphragm steel webs 701 of the outer transverse steel diaphragm assemblies 7 with the corrugated steel plates 801; welding an outer bulkhead bottom steel plate 703 of the outer transverse steel bulkhead assembly 7 to a bottom support steel plate 803;
installing a bottom plate template, installing a top plate template, binding steel bars in the top plate, and installing a pier top hogging moment prestress steel beam corrugated pipe in a top plate steel bar framework;
pouring concrete of the bottom plate and concrete of the top plate, curing the concrete, removing all templates after the concrete reaches the design strength, and tensioning the side beam bottom plate prestressed steel bundles 105 and the middle beam bottom plate prestressed steel bundles 205;
obtaining a prefabricated corrugated steel web combined small box girder;
s3, transporting and hoisting the prefabricated corrugated steel web combined small box girder on a bridge abutment;
s4, splicing an outer transverse steel partition plate assembly 7 of the transverse bridge to the adjacent two corrugated steel web combined small box girders through a steel connecting assembly 3 and bolts 5;
s5, the concrete top plates of the two adjacent corrugated steel web combined small box girders are mutually connected through cast-in-situ reinforced concrete wet joints 4;
the concrete operation of the cast-in-situ reinforced concrete wet joint 4 construction is as follows: installing a wet joint bottom template by adopting a hanging die method, binding wet joint steel bars of a top plate, and then pouring concrete;
s6, repeating the steps S4-S5 to finish transverse splicing of each bridge span corrugated steel web combined small box girder;
s7, longitudinally splicing and assembling the corrugated steel web combined small box girder, as shown in fig. 12 and 13;
binding longitudinal connecting ribs and stirrups between the top plate and the bottom plate of the adjacent bridge span, and pouring concrete to form a reinforced concrete beam 9; when the concrete strength of the reinforced concrete beam 9 reaches the design strength, symmetrically stretching the prestressed steel bundles 104 of the hogging moment side beam top plate and the prestressed steel bundles 204 of the middle beam top plate of the pier top by taking the central line of the single bridge as an axis to form a multi-span continuous beam system; then, at the bridge pier of the longitudinal splicing of the corrugated steel web combined small box girder, converting the two rows of temporary supports 10 into one row of permanent supports 11;
s8, completing construction of other auxiliary facilities of the bridge.
The invention has the advantages of the common corrugated steel web combined small box girder structure in the aspects of stress performance, material utilization rate, construction safety, economic benefit, durability and the like, can effectively overcome the problems of inconvenient transverse connection construction, long construction period, easily influenced construction quality and the like of the common corrugated steel web combined small box girder, and has obvious advantages in the aspects of construction process, later bridge maintenance and engineering cost reduction.
In particular, the advantages of the invention may be represented by the following points:
1. the invention fully plays the advantages of concrete and corrugated steel materials, further reduces the use amount of the concrete, reduces the dead weight of the prefabricated small box girder, has the advantages of energy conservation, environmental protection, good economic performance and convenient construction and transportation, and is suitable for large-scale prefabrication and assembly type construction.
2. The invention adopts the steel diaphragm, the inner diaphragm assembly 6 and the outer diaphragm assembly 7 are welded and connected with the corrugated steel web assembly 8 on the same plane, and the transverse force transmission path is continuous, thereby solving the problem of adverse stress caused by the fact that the stressed main rib of the reinforced concrete diaphragm is separated by the corrugated steel web assembly 8.
3. According to the invention, the transverse splicing is carried out by adopting the steel connecting component 3 and the bolts 5 at the diaphragm plate, so that the construction is convenient and rapid, the construction period is saved, and the problems that the reinforced concrete diaphragm plate is adopted by the corrugated steel web small box girder bridge, the diaphragm plate template is difficult to support and dismantle, the construction period is long and the like are solved.
4. The invention has simple construction, high speed, easy control of construction quality and cost saving.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is intended to cover various modifications, either made by the method concepts and technical solutions of the invention, or applied directly to other applications without modification, within the scope of the invention.
Claims (3)
1. The construction method of the prefabricated assembled steel diaphragm plate corrugated steel web plate combined small box girder is characterized by comprising the following specific steps of:
s1, bridge design is carried out, and parameters of all parts are determined;
s2, prefabricating the corrugated steel web combined small box girder in a factory or in a prefabricating place according to a design drawing:
the prefabrication method comprises the following steps:
cutting steel plates of all parts according to the design size, forming a plurality of connecting holes on the connecting steel plates (306) of the connecting pieces, welding and assembling, and then welding uniformly arranged connecting piece pegs (304) on the top steel plates (302) of the connecting pieces of the steel connecting assembly (3);
for the inner transverse steel baffle assembly (6), cutting steel plates of all parts according to the design size, welding and assembling, and then welding uniformly arranged inner baffle studs (604) on the inner baffle top steel plate (602) and the inner baffle bottom steel plate (603) of the inner transverse steel baffle assembly (6);
for the outer transverse steel baffle assembly (7), cutting steel plates of all parts according to the design size, welding and assembling, and then welding uniformly arranged outer baffle studs (704) on the steel plates (702) at the top of the outer baffle of the outer transverse steel baffle assembly (7);
for the corrugated steel web assembly (8), firstly punching a corrugated steel plate (801), then arranging holes for the anchor steel bars (804) to pass through at the design positions of the two ends of the corrugated steel plate (801), and then welding a top support steel plate (802) and a bottom support steel plate (803) at the two ends of the corrugated steel plate (801);
binding a fixed bottom plate steel bar on a prefabricated pedestal, and arranging a bottom plate prestress steel beam corrugated pipe; fixing a corrugated steel web assembly (8) on the bottom plate steel reinforcement framework according to the designed inclination angle; installing all inner transverse steel baffle plate assemblies (6) and all outer transverse steel baffle plate assemblies (7), and welding inner baffle plate steel webs (601) of the inner transverse steel baffle plate assemblies (6) and outer baffle plate steel webs (701) of the outer transverse steel baffle plate assemblies (7) with a corrugated steel plate (801); welding an outer diaphragm bottom steel plate (703) of an outer diaphragm steel diaphragm assembly (7) with a bottom support steel plate (803);
installing a bottom plate template, installing a top plate template, binding steel bars in the top plate, and installing a pier top hogging moment prestress steel beam corrugated pipe in a top plate steel bar framework;
pouring concrete of the bottom plate and concrete of the top plate, performing concrete curing, removing all templates after the concrete reaches the design strength, and tensioning the side beam bottom plate prestressed steel bundles (105) and the middle beam bottom plate prestressed steel bundles (205);
obtaining a prefabricated corrugated steel web combined small box girder;
s3, transporting and hoisting the prefabricated corrugated steel web combined small box girder on a bridge abutment;
s4, splicing an outer transverse steel partition plate assembly (7) of the transverse bridge to the adjacent two corrugated steel web combined small box beams through a steel connecting assembly (3) and bolts (5);
s5, the concrete top plates of the two adjacent corrugated steel web combined small box girders are mutually connected through cast-in-situ reinforced concrete wet joints (4);
s6, repeating the steps S4-S5 to finish transverse splicing of each bridge span corrugated steel web combined small box girder;
s7, longitudinally splicing and assembling the corrugated steel web combined small box girder;
binding longitudinal connecting ribs and stirrups between the top plate and the bottom plate of the adjacent bridge span, and pouring concrete to form a reinforced concrete beam (9); when the concrete strength of the reinforced concrete cross beam (9) reaches the design strength, symmetrically tensioning a prestressed steel beam (104) of a hogging moment side beam top plate and a prestressed steel beam (204) of a middle beam top plate of the pier top by taking a central line of a single bridge as an axis to form a multi-span continuous beam system; then, at the bridge pier of the longitudinal splicing of the corrugated steel web combined small box girder, converting the two rows of temporary supports (10) into one row of permanent supports (11);
s8, completing construction of other auxiliary facilities of the bridge.
2. The construction method of the prefabricated steel diaphragm plate corrugated steel web combined small box girder according to claim 1, wherein in the step S1, when bridge design is carried out, the number of pieces of boundary beam components (1) and middle beam components (2) required by each bridge span is required to be determined; determining the width of a steel connecting assembly (3) and a cast-in-situ reinforced concrete wet joint (4); parameters of reinforcement bars, side beam top plate prestress steel bundles (104), side beam bottom plate prestress steel bundles (105), middle beam top plate prestress steel bundles (204) and middle beam bottom plate prestress steel bundles (205) of the corrugated steel web combined small box girder are determined; parameters of all the steel plates of the steel connecting assembly (3), the inner transverse steel baffle assembly (6), the outer transverse steel baffle assembly (7) and the corrugated steel web assembly (8) are determined.
3. The construction method of the prefabricated steel diaphragm plate corrugated steel web combined small box girder according to claim 2, wherein the concrete operation of the cast-in-situ reinforced concrete wet joint (4) construction in the step S5 is as follows: and installing a wet joint bottom template by adopting a hanging die method, binding wet joint steel bars of a top plate, and then pouring concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311534273.XA CN117468360A (en) | 2023-11-17 | 2023-11-17 | Construction method of prefabricated steel diaphragm corrugated steel web combined small box beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311534273.XA CN117468360A (en) | 2023-11-17 | 2023-11-17 | Construction method of prefabricated steel diaphragm corrugated steel web combined small box beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117468360A true CN117468360A (en) | 2024-01-30 |
Family
ID=89623691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311534273.XA Pending CN117468360A (en) | 2023-11-17 | 2023-11-17 | Construction method of prefabricated steel diaphragm corrugated steel web combined small box beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117468360A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119392870A (en) * | 2024-12-02 | 2025-02-07 | 中建三局集团有限公司 | A PC prefabricated small box beam node steel bar structure and forming method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008121288A (en) * | 2006-11-13 | 2008-05-29 | Fuji Ps Corp | Continuous steel web bridge and continuous steel web bridge construction method |
| CN201567530U (en) * | 2009-12-25 | 2010-09-01 | 万水 | Assembly-type combined box girder and component unit body |
| CN103938549A (en) * | 2014-05-14 | 2014-07-23 | 河南省交通规划勘察设计院有限责任公司 | Construction method for fabricated type corrugated steel inclined web combined beam |
| CN106906748A (en) * | 2017-03-09 | 2017-06-30 | 河南省交通规划设计研究院股份有限公司 | Construction method of prefabricated corrugated steel web composite box girder based on mixed prestress |
| CN215758474U (en) * | 2021-09-15 | 2022-02-08 | 湖北省交通规划设计院股份有限公司 | Assembled steel bridge of U-shaped section steel box girder |
| CN217419288U (en) * | 2022-05-04 | 2022-09-13 | 河南新昱鑫桥梁钢构有限责任公司 | Wave form steel web bridge is diaphragm structure |
| CN217579708U (en) * | 2022-01-24 | 2022-10-14 | 福州大学 | Non-prestressed corrugated steel web combined box girder bridge structure |
-
2023
- 2023-11-17 CN CN202311534273.XA patent/CN117468360A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008121288A (en) * | 2006-11-13 | 2008-05-29 | Fuji Ps Corp | Continuous steel web bridge and continuous steel web bridge construction method |
| CN201567530U (en) * | 2009-12-25 | 2010-09-01 | 万水 | Assembly-type combined box girder and component unit body |
| CN103938549A (en) * | 2014-05-14 | 2014-07-23 | 河南省交通规划勘察设计院有限责任公司 | Construction method for fabricated type corrugated steel inclined web combined beam |
| CN106906748A (en) * | 2017-03-09 | 2017-06-30 | 河南省交通规划设计研究院股份有限公司 | Construction method of prefabricated corrugated steel web composite box girder based on mixed prestress |
| CN215758474U (en) * | 2021-09-15 | 2022-02-08 | 湖北省交通规划设计院股份有限公司 | Assembled steel bridge of U-shaped section steel box girder |
| CN217579708U (en) * | 2022-01-24 | 2022-10-14 | 福州大学 | Non-prestressed corrugated steel web combined box girder bridge structure |
| CN217419288U (en) * | 2022-05-04 | 2022-09-13 | 河南新昱鑫桥梁钢构有限责任公司 | Wave form steel web bridge is diaphragm structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119392870A (en) * | 2024-12-02 | 2025-02-07 | 中建三局集团有限公司 | A PC prefabricated small box beam node steel bar structure and forming method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106758856B (en) | The construction method of the pretensioned prestressing corrugated steel web plate composite box girder of precast block | |
| CN112900618A (en) | Prefabricated frame, beam column joint and construction method | |
| CN107245934A (en) | A kind of assembled steel profiled sheet concrete combined board small box girder | |
| KR101026118B1 (en) | Truss structure corresponding to the secondary moment of the point part and its manufacturing method and truss bridge using the truss structure corresponding to the secondary moment of the point part and its construction method | |
| CN114592440B (en) | Upper structure of assembled steel-concrete combined bridge and construction process thereof | |
| CN106894326A (en) | The construction method of assembled pretensioned prestressing corrugated steel web plate composite box girder | |
| CN114457667B (en) | Large-span top-decker open-hole web-beam-arch composite rigid frame bridge and its construction method | |
| CN105064196B (en) | The fish belly I-shaped combination of prestressing force steel reinforced concrete simply supported girder bridge and its construction method of precast assembly | |
| CN105064195B (en) | The fish belly Wavelike steel webplate prestressing with bond steel reinforced concrete combination simply supported girder bridge and its construction method of precast assembly | |
| CN105064200B (en) | Prefabricated and assembled fish-belly truss prestressed steel-concrete composite simply supported beam bridge and its construction method | |
| CN212773070U (en) | Hollow superimposed sheet of one-way prefabricated two-way atress | |
| CN210507091U (en) | Assembled prestressed combined box girder | |
| CN111979891A (en) | A kind of semi-penetrating rectangular steel tube concrete composite truss bridge and construction method | |
| CN112049254B (en) | Fiber reinforced concrete hybrid frame joints with full-section diaphragm structure without stirrups | |
| CN210104528U (en) | A lightweight steel grid-UHPC composite bridge structure | |
| CN117468360A (en) | Construction method of prefabricated steel diaphragm corrugated steel web combined small box beam | |
| CN112282207A (en) | A composite beam, a spliced beam and a subway station | |
| CN112482200A (en) | Connecting structure of hogging moment area of steel-concrete combined continuous beam and construction method thereof | |
| CN217974005U (en) | Combined box girder structure | |
| CN115287992B (en) | A composite box beam structure and construction method | |
| CN209619832U (en) | A kind of assembly concrete box girder structure based on steel construction sway bracing | |
| CN113789711B (en) | NC-UHPC combined assembled prestressed concrete box girder, construction method and bridge thereof | |
| CN215051984U (en) | Wide-width large-span hybrid beam short-tower cable-stayed bridge system | |
| CN207958956U (en) | A kind of assembly steel-concrete combination beam | |
| CN215484061U (en) | Combined beam, spliced beam and subway station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |