CN111058385A - Auxiliary girder trial splicing method for double-layer steel structure bridge - Google Patents
Auxiliary girder trial splicing method for double-layer steel structure bridge Download PDFInfo
- Publication number
- CN111058385A CN111058385A CN202010029951.7A CN202010029951A CN111058385A CN 111058385 A CN111058385 A CN 111058385A CN 202010029951 A CN202010029951 A CN 202010029951A CN 111058385 A CN111058385 A CN 111058385A
- Authority
- CN
- China
- Prior art keywords
- upper chord
- steel structure
- double
- auxiliary
- truss
- 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
Images
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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a method for trial splicing auxiliary girders of a double-layer steel structure bridge, which belongs to the field of steel structure bridges and adopts the technical scheme that the method comprises the following steps: s1, building a jig frame; s2, assembling the main truss pieces, and sequentially assembling the upper chord member, the lower chord member and the web members until the main truss piece rod members are completely assembled in the turn; s3, assembling the upper chord side longitudinal beam and the auxiliary truss diagonal rods, and sequentially assembling the upper chord side longitudinal beam and the auxiliary truss diagonal rods until all sections are assembled in the current round; and S4, drilling holes in a matched mode, namely drilling holes in groups of upper chord side longitudinal beams in a matched mode through auxiliary truss inclined rod holes, drilling holes in groups of stiffening plates and connecting plates on the upper chord side main longitudinal beams in a matched mode through standard splicing plates, and completing drilling before trial splicing. By adopting the trial splicing method of the auxiliary trusses of the double-layer steel structure bridge, the problem of hole making of the bolt connection parts of the upper layer and the lower layer of the complex auxiliary truss diagonal bar is solved; the auxiliary truss inclined rods are effectively and accurately connected, and the transverse gradient and the longitudinal port of the upper layer bridge deck structure are accurately connected.
Description
Technical Field
The invention relates to the technical field of steel structure bridges, in particular to a trial splicing method for auxiliary girders of a double-layer steel structure bridge.
Background
For a double-layer steel structure bridge with an auxiliary truss diagonal rod and upper and lower bridge decks both connected by bolts, because the connection part of an upper-layer side longitudinal beam and a lower-layer chord member is very complicated, the precision of a hole group at the connection part directly influences whether the auxiliary truss is smoothly connected or not, the precision connection of the transverse gradient and the longitudinal port of the upper bridge deck is influenced, and the requirements of the size precision and the line type of the hole group cannot be ensured by a conventional manufacturing process.
Therefore, a method for trial assembly of the secondary girders of the double-layer steel structure bridge is provided.
Disclosure of Invention
The invention mainly aims to provide a method for trial splicing of secondary girders of a double-layer steel structure bridge, which aims to solve the problems in the background technology.
In order to achieve the aim, the invention provides a method for trial splicing of secondary girders of a double-layer steel structure bridge, which comprises the following steps:
s1, building a jig frame;
s2, assembling the main truss pieces, and sequentially assembling the upper chord member, the lower chord member and the web members until the main truss piece rod members are completely assembled in the turn;
s3, assembling the upper chord side longitudinal beam and the auxiliary truss diagonal rods, and sequentially assembling the upper chord side longitudinal beam and the auxiliary truss diagonal rods until all sections are assembled in the current round;
and S4, drilling holes in a matched mode, namely drilling holes in groups of upper chord side longitudinal beams in a matched mode through auxiliary truss inclined rod holes, drilling holes in groups of stiffening plates and connecting plates on the upper chord side main longitudinal beams in a matched mode through standard splicing plates, and completing drilling before trial splicing.
Further, in step S2, the main girder piece is fabricated by a flat assembly process.
Further, in step S2, when the main beam pieces are assembled, the alignment line type meets the design requirement.
Further, in step S3, the upper chord side longitudinal beam is manufactured by an upright assembling process.
Further, in step S3, when the upper chord side longitudinal beam and the sub-truss diagonal member are tried to be spliced, the line type of the upper chord side longitudinal beam is adjusted to meet the design requirement, and then matching and hole making are performed.
Further, in step S4, the groups to be drilled are all hollow drilled holes.
Further, in step S4, when the holes are matched, the fixing of the connection portion is secured so as not to loosen.
By applying the technical scheme of the invention, the beneficial effects are as follows:
1. compared with the existing direct measurement method, the trial splicing method for the auxiliary girder of the double-layer steel structure bridge solves the problem of hole making of the bolt connection parts of the upper layer and the lower layer of the complicated auxiliary girder diagonal bar;
2. compared with the existing direct measurement method, the method for trial splicing the auxiliary girders of the double-layer steel structure bridge ensures that the auxiliary girder diagonal rods are effectively and accurately connected and the transverse gradient and the longitudinal port of the upper layer bridge deck structure are accurately connected.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic elevation view of a trial jig assembly;
FIG. 2 is a floor plan of a trial jig assembly;
FIG. 3 is a trial puzzle of the upper chord of the main truss;
FIG. 4 is a trial puzzle showing the lower chord of a main truss piece;
FIG. 5 is a trial picture of a main web member;
FIG. 6 is a trial puzzle of a side stringer with a chord on a secondary stringer;
fig. 7 is a trial puzzle of the sub-truss diagonal.
Wherein the figures include the following reference numerals:
10. an upper chord; 20. a lower chord; 30. a web member; 40. an upper chord side stringer; 50. and the auxiliary truss diagonal rods.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 7, the invention provides a trial assembly method of a secondary girder of a double-layer steel structure bridge, which comprises the following steps:
s1, building a jig frame; the length and the width of the trial assembly jig frame meet the trial assembly turn requirement, the height of the jig frame is about 0.8-1.2 m, each supporting point of the jig frame needs to be accurately supported at the joint part of the upper chord 10 and the lower chord 20 and at two ends of the web member 30, each supporting point basically meets the elevation requirement of the trial assembly section of the turn, and a thin cushion plate can be adopted for fine adjustment.
S2, assembling the main truss pieces, and sequentially assembling the upper chord 10, the lower chord 20 and the web members 30 until the main truss piece rod pieces are completely assembled in the current round; the connecting ports are connected by adopting splicing plates, the node plate layers are closely attached in the trial assembly process, the number of punching nails at each hole group position is not less than 10% of the number of the bolt holes of the hole group, the number of bolts is not less than 20% of the number of the bolt holes of the hole group, the hole testers are adopted to check that all bolt holes and bolt holes of a steel truss freely pass through the hole testers with the designed aperture being 0.75mm smaller by 100%, and the orthogonal opposite steel bridge deck and the bolt holes of a transverse connection freely pass through the hole testers with the designed aperture being 1.0mm smaller by 100%.
S3, assembling the upper chord side longitudinal beam 40 and the auxiliary truss diagonal rods 50, and sequentially assembling the upper chord side longitudinal beam 40 and the auxiliary truss diagonal rods 50 until all sections are assembled in the current round; the connecting ports are connected by adopting a splicing plate, the number of punching nails at the position of each hole group is not less than 10% of the number of the bolt holes of the hole group, and the number of bolts is not less than 20% of the number of the bolt holes of the hole group; and temporarily fixing the connecting ports of the group to be drilled by adopting a horse board.
And S4, drilling holes in groups, namely drilling the holes in the upper chord side longitudinal beam 40 in groups by using the holes in the auxiliary truss diagonal rods 50, and drilling holes in the stiffening plate holes and the connecting plate holes in the upper chord side main longitudinal beam in groups by using the standard splice plates in groups by adopting a first hole method before trial assembly.
Specifically, in step S2, the main truss pieces are fabricated by a flat assembling process, so that the camber and the matching accuracy of the longitudinal joints of the main truss pieces can be ensured.
In step S2, when the main girder pieces are trial spliced, the adjustment line type meets the design requirement, and the deviation of the line type of the whole bridge after the auxiliary girder pieces are trial spliced can be avoided.
Specifically, in step S3, the upper chord side longitudinal beam 40 is manufactured by an upright assembling process.
In step S3, when the upper chord side longitudinal beam 40 and the sub-truss diagonal member 50 are assembled, the line type of the upper chord side longitudinal beam 40 is adjusted to meet the design requirement, and then the matching and hole making are performed so that the line type and the hole position both meet the design requirement.
In step S4, the group to be drilled is formed by core drilling.
In step S4, when hole forming is performed, the fastening of the connection portion is secured so as not to loosen, and hole forming accuracy can be ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A method for trial splicing auxiliary girders of a double-layer steel structure bridge is characterized by comprising the following steps:
s1, building a jig frame;
s2, assembling the main truss pieces, and sequentially assembling the upper chord member, the lower chord member and the web members until the main truss piece rod members are completely assembled in the turn;
s3, assembling the upper chord side longitudinal beam and the auxiliary truss diagonal rods, and sequentially assembling the upper chord side longitudinal beam and the auxiliary truss diagonal rods until all sections are assembled in the current round;
and S4, drilling holes in groups, namely drilling holes in groups of upper chord side longitudinal beams in groups of auxiliary truss inclined rod holes, drilling holes in groups of stiffening plates in groups of upper chord side main longitudinal beams in groups of standard splice plates, and drilling holes in groups of connecting plates before trial splicing.
2. The method for trial assembly of the secondary girder of the double-layer steel structure bridge according to claim 1, wherein the method comprises the following steps: in step S2, the main truss piece is fabricated by a flat assembly process.
3. The method for trial assembly of the secondary girder of the double-layer steel structure bridge according to claim 1, wherein the method comprises the following steps: in step S2, when the main beam pieces are assembled, the alignment line meets the design requirement.
4. The method for trial assembly of the secondary girder of the double-layer steel structure bridge according to claim 1, wherein the method comprises the following steps: in step S3, the upper chord side stringer is fabricated by a standing splicing process.
5. The method for trial assembly of the secondary girder of the double-layer steel structure bridge according to claim 1, wherein the method comprises the following steps: in step S3, when the upper chord side longitudinal beam and the sub-truss diagonal member are tried to be spliced, matching and hole making are performed after the line type of the upper chord side longitudinal beam is adjusted to meet the design requirement.
6. The method for trial assembly of the secondary girder of the double-layer steel structure bridge according to claim 1, wherein the method comprises the following steps: in step S4, the group to be drilled is formed by core drilling.
7. The method for trial assembly of the secondary girder of the double-layer steel structure bridge according to claim 1, wherein the method comprises the following steps: in step S4, the fastening of the connection portion is secured so as not to loosen when the holes are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010029951.7A CN111058385A (en) | 2020-01-13 | 2020-01-13 | Auxiliary girder trial splicing method for double-layer steel structure bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010029951.7A CN111058385A (en) | 2020-01-13 | 2020-01-13 | Auxiliary girder trial splicing method for double-layer steel structure bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111058385A true CN111058385A (en) | 2020-04-24 |
Family
ID=70307082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010029951.7A Pending CN111058385A (en) | 2020-01-13 | 2020-01-13 | Auxiliary girder trial splicing method for double-layer steel structure bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111058385A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648243A (en) * | 2020-05-08 | 2020-09-11 | 江苏中铁山桥重工有限公司 | Method for assembling large sections of bolted and welded combined steel truss girder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040216249A1 (en) * | 2003-04-29 | 2004-11-04 | El-Badry Mamdouh M. | Corrosion-free bridge system |
| JP2009275476A (en) * | 2008-05-19 | 2009-11-26 | Kajima Corp | Vertical beam system of movement work vehicle for cantilever construction |
| CN106078114A (en) * | 2016-07-21 | 2016-11-09 | 中铁九桥工程有限公司 | A kind of large span main truss, floorings integration manufacture and secondary purlin borehole accuracy controls technology |
| CN107905108A (en) * | 2017-11-14 | 2018-04-13 | 宝鸡中铁宝桥天元实业发展有限公司 | Tubular arch bolted web member hole group's accuracy control method |
| CN110373988A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | The big segment steel truss girder and manufacturing technology of a kind of band pair purlin |
-
2020
- 2020-01-13 CN CN202010029951.7A patent/CN111058385A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040216249A1 (en) * | 2003-04-29 | 2004-11-04 | El-Badry Mamdouh M. | Corrosion-free bridge system |
| JP2009275476A (en) * | 2008-05-19 | 2009-11-26 | Kajima Corp | Vertical beam system of movement work vehicle for cantilever construction |
| CN106078114A (en) * | 2016-07-21 | 2016-11-09 | 中铁九桥工程有限公司 | A kind of large span main truss, floorings integration manufacture and secondary purlin borehole accuracy controls technology |
| CN107905108A (en) * | 2017-11-14 | 2018-04-13 | 宝鸡中铁宝桥天元实业发展有限公司 | Tubular arch bolted web member hole group's accuracy control method |
| CN110373988A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | The big segment steel truss girder and manufacturing technology of a kind of band pair purlin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648243A (en) * | 2020-05-08 | 2020-09-11 | 江苏中铁山桥重工有限公司 | Method for assembling large sections of bolted and welded combined steel truss girder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220243409A1 (en) | Temporary support system for road bridge pre-fabricated small box girder-type concealed bent cap, and method of constructing same | |
| CN114178736B (en) | Method for controlling total splicing transverse slope of ultra-wide steel box girder | |
| JPH01502921A (en) | Bridges consisting of a deck and elements supporting the deck, especially long span cable-stayed bridges, and methods of construction thereof | |
| CN110258795A (en) | A kind of complete bolted prefabricated assembled bean column node | |
| CN111648243A (en) | Method for assembling large sections of bolted and welded combined steel truss girder | |
| CN111058385A (en) | Auxiliary girder trial splicing method for double-layer steel structure bridge | |
| KR200363068Y1 (en) | Girder Structure of Preflex Composite Beam with Regard to Section Force | |
| CN107794833B (en) | Side girder of superposed girder segment and assembling method thereof | |
| CN114382001B (en) | Box girder bridge structure and combined bridge construction method | |
| CN110899768B (en) | Beam drilling device and beam drilling method | |
| CN113530051B (en) | Prefabricated rib-free laminated slab | |
| CN111945545A (en) | Bridge facility that modularization was assembled | |
| CN108560712B (en) | Assembled pipe truss connecting sleeve node structure and mounting method thereof | |
| JPS5828005Y2 (en) | Prefabricated cross girder bridge | |
| CN116104012B (en) | Assembling method of space curve steel beam | |
| CN117822410B (en) | Steel-concrete combined diaphragm beam structure with transversely connected T beams and construction method | |
| CN215668970U (en) | Simple sightseeing platform additionally arranged on existing truss girder | |
| CN109024226B (en) | Steel truss bridge node structure connected by rivets and construction method | |
| CN212359279U (en) | Novel prestressed reinforced concrete composite beam | |
| CN114626137B (en) | Method for obtaining large-span steel-concrete combined continuous beam bridge curve section steel truss girder | |
| KR102625592B1 (en) | Long span beam with reinforced joint | |
| CN215329420U (en) | Reinforced structure of steel truss girder segment | |
| CN212505803U (en) | Double-layer steel box lattice type bridge | |
| CN214939272U (en) | Railway steel truss girder combined bridge deck structure and system | |
| CN112681104B (en) | Manufacturing method of steel arch steel frame landscape bridge |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200424 |