CN214573368U - A shear-resistant beret - Google Patents
A shear-resistant beret Download PDFInfo
- Publication number
- CN214573368U CN214573368U CN202120053888.0U CN202120053888U CN214573368U CN 214573368 U CN214573368 U CN 214573368U CN 202120053888 U CN202120053888 U CN 202120053888U CN 214573368 U CN214573368 U CN 214573368U
- Authority
- CN
- China
- Prior art keywords
- channel steel
- bailey
- chord
- steel
- vertical web
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
一种抗剪型贝雷，包括对称布设的弦杆，对称布设的弦杆通过若干竖腹杆连接，弦杆与竖腹杆之间布设有斜腹杆，竖腹杆包括布设在弦杆两端的外设竖腹杆和弦杆中央的内设竖腹杆，所述外设竖腹杆包括第三槽钢和第四槽钢，第三槽钢和第四槽钢相对布设，第三槽钢和第四槽钢通过若干矩形钢板连接，矩形钢板上布设有第四销轴孔，本实用新型在其原有结构基础上，优化了单元杆件结构和材料以增强竖腹杆的承载能力，进而优化贝雷连续梁的应力分布，有效提高了贝雷的综合承载能力。
A shear-resistant beret comprises symmetrically arranged chords, the symmetrically arranged chords are connected by a plurality of vertical webs, and inclined webs are arranged between the chords and the vertical webs, and the vertical webs include two arranged on the chords. The outer vertical web bar at the end and the inner vertical web bar in the center of the chord bar, the outer vertical web bar includes a third channel steel and a fourth channel steel, the third channel steel and the fourth channel steel are arranged oppositely, and the third channel steel is arranged. It is connected with the fourth channel steel through several rectangular steel plates, and the rectangular steel plate is provided with a fourth pin hole. On the basis of its original structure, the utility model optimizes the structure and material of the unit rod to enhance the bearing capacity of the vertical web rod. Furthermore, the stress distribution of the Bailey continuous beam is optimized, which effectively improves the comprehensive bearing capacity of Bailey.
Description
Technical Field
The utility model belongs to bridge construction field especially relates to a type of shearing bailey.
Background
The Bailey sheet used by the current domestic universal '321' Bailey steel bridge is developed and improved by combining the national conditions of China on the basis of the original English Bailey truss bridge, and is shaped, produced and put into use from 1965. The Bailey sheet is formed by processing double-spliced 10# channel steel and 8# I-steel. Although some '321' Bailey sheets are optimized in design in recent years, the basic structural forms of the chords adopting the double-spliced 10# channel steel and the web members adopting the 8# I-shaped steel are not changed.
The technical performance, the member names and the application of the 321 Bailey steel bridge, the design calculation data of the bridge, the splicing and erecting technology and the program are all described in detail in the assembly type highway steel bridge operating manual published in 1998 by the traffic war preparedness office of the department of transportation. The theoretical allowable bearing capacity of 321 Bailey sheets main unit rod pieces, Standard forms, spans and integral bearing capacity of Bailey temporary steel bridges are listed in an assembly type highway steel bridge operating manual. According to parameters and a using method in an assembly type highway steel bridge operating manual, an original 321 Bailey sheet is designed for a large-span light-load simply supported beam structure based on an allowable stress method, and the Bailey sheet is assumed to be a truss structure in calculation, and unit rods are pure tension and compression rods.
However, the design concept of the original '321' Bailey sheet is not consistent with the actual use condition at present: firstly, the current structural design specification generally adopts a limit state method; secondly, the bailey sheets are actually lattice frames rather than trusses, so that bending moment can be transmitted among the rod pieces of the single bailey sheet, and the bailey sheet is not a pure tension-compression rod; furthermore, in large temporary load-bearing facilities used in current civil engineering and road and bridge construction, the beret beam is generally a small-span heavy-load continuous beam structure.
When the original 321 Bailey sheet is used for building a continuous beam bearing member and the structure checking calculation is carried out according to the modern design concept, the theoretical bearing capacity of the continuous beam bearing member is far less than the nominal data in an assembly type highway steel bridge operating manual. Especially, the bearing capacity of the 8# I-steel web member near the fulcrum is poor, and is seriously not matched with the integral bearing capacity of the Bailey beam, and the local reinforcement of the rod member is often needed. However, since the Bailey pieces are not suitable for being welded with the additional rod pieces, the effect of adding the reinforcing rods is very limited.
In order to overcome the practical problems that the original 321 Bailey sheet is not suitable for a small-span heavy-load continuous beam structure, the bearing capacity of a unit rod piece is insufficient, the effect of additionally arranging a reinforcing rod is limited and the like, the shear-resistant Bailey is designed.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the defect among the above-mentioned prior art, provide an optimize unit member material and structure and erect web member bearing capacity in order to strengthen, and then optimize the shearing type bailey of bailey continuous beam stress distribution.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a type of shearing bailey, includes the chord member that the symmetry was laid, the chord member that the symmetry was laid is connected through a plurality of perpendicular web members, has laid oblique web member between chord member and the perpendicular web member, erects the web member including laying and establishing perpendicular web member in the peripheral hardware of chord member both ends is erected web member chord member central authorities, the peripheral hardware is erected the web member and is included third channel-section steel and fourth channel-section steel, and third channel-section steel and fourth channel-section steel are laid relatively, and third channel-section steel and fourth channel-section steel are connected through a plurality of rectangle steel sheets, have laid the fourth round pin shaft hole on the rectangle steel sheet.
As a preferred scheme of the utility model, the peripheral hardware erects the web member, establishes to erect the equidistant laying of web member in.
As a preferred scheme of the utility model, first round pin shaft hole has been laid to the one end of chord member, and second round pin shaft hole has been laid to the other end of chord member.
As the utility model discloses an optimal scheme, the chord member includes first channel-section steel and second channel-section steel, and first channel-section steel and second channel-section steel are laid relatively, and first channel-section steel and second channel-section steel are connected through a plurality of steel sheets, have laid the third round pin shaft hole on the steel sheet.
As an optimized scheme of the utility model, the web member perpendicular to chord member is erected to the peripheral hardware.
As an optimized proposal of the utility model, the interior is provided with the vertical web members perpendicular to the chord members.
As an optimized proposal of the utility model, the side surface of the diagonal web member is of an I-shaped structure.
As an optimized proposal of the utility model, the end part of the oblique web member is provided with an internally tangent notch.
As an optimized proposal of the utility model, the length of the chord is 1.5 to 3 times of the length of the vertical web member.
As an optimized proposal of the utility model, the length of the vertical web member is 1.2 to 2 times of that of the diagonal web member.
The utility model has the advantages that:
1. the utility model provides a shearing type bailey is on its original structural basis, optimizes the bearing capacity of unit member material in order to strengthen perpendicular web member, and then optimizes the stress distribution of bailey continuous beam.
2. The utility model provides a pair of shearing type bailey uses the channel-section steel of suitable model to make up into perpendicular web member, optimizes the cross sectional area and the shape of member, effectively improves and erects the web member and synthesize bearing capacity.
3. The utility model provides a pair of type of shearing bailey is striding the theoretical bearing capacity among the continuous beam bearing structure of footpath no longer than 15m and has obvious improvement than former "321" bailey, and the bearing capacity increase range is greater than the weight increase range, and strides the footpath and the bearing capacity increase range is big more less.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the structure of the A-A surface of the present invention;
FIG. 3 is a schematic view of the structure of the plane B-B of the present invention;
reference numbers in the figures: chord member 1, oblique web member 2, erect web member 3, third round pin shaft hole 5, fourth round pin shaft hole 6, steel sheet 7, rectangle steel sheet 8, the perpendicular web member of peripheral hardware 31 establishes perpendicular web member 32 in, first channel-section steel 101, second channel-section steel 102, breach 201, third channel-section steel 301, fourth channel-section steel 302, first round pin shaft hole 401, second round pin shaft hole 402.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-3, a shear-resistant bailey comprises chords 1 which are symmetrically arranged, the chords 1 which are symmetrically arranged are connected through a plurality of vertical web members 3, diagonal web members 2 are arranged between the chords 1 and the vertical web members 3, the vertical web members 3 comprise peripheral vertical web members 31 arranged at two ends of the chords 1 and vertical web members 32 arranged in the centers of the chords 1, the peripheral vertical web members 31 comprise third channel steel 301 and fourth channel steel 302, the third channel steel 301 and the fourth channel steel 302 are arranged relatively, the distance between the third channel steel 301 and the fourth channel steel 302 is preferably 8cm, the third channel steel 301 and the fourth channel steel 302 are connected through a plurality of rectangular steel plates 8, fourth pin shaft holes 6 are arranged on the rectangular steel plates 8, the fourth pin shaft holes 6 can be connected with bailey windows, and two adjacent bailey windows are connected into a whole.
Further, the external vertical web members 31 and the internal vertical web members 32 are arranged at equal intervals, so that stress distribution on the shear-resistant bailey is balanced, the sectional area and the shape of the vertical web members 3 are optimized by the external vertical web members 31 through a channel steel structure formed by the third channel steel 301 and the fourth channel steel 302, and the comprehensive bearing capacity of the vertical web members 3 is effectively improved, of course, the external vertical web members 31 can be single square steel pipes or single rectangular steel pipes, and the internal vertical web members 32 can be single square steel pipes or single rectangular steel pipes; the peripheral vertical web members 31 are perpendicular to the chord members 1, and the internal vertical web members 32 are perpendicular to the chord members 1, so that the earlier positioning and the subsequent installation between the chord members 1 and the vertical web members 3 are facilitated.
Further, a first pin shaft hole 401 is distributed at one end of the chord member 1, the first pin shaft hole 401 corresponds to a male head on the shearing-resistant 321 Bailey, a second pin shaft hole 402 is distributed at the other end of the chord member 1, the second pin shaft hole 402 corresponds to a female head on the shearing-resistant Bailey, and the male head and the female head of other Bailey accessible shearing-resistant Bailey are connected with the shearing-resistant Bailey and spliced into a beam structure with any length. Chord member 1, oblique web member 2 and erect web member 3 and lay relatively and form a plurality of triangle-shaped structure, have guaranteed the stability of structure, and on the other hand has strengthened the bearing capacity of structure.
Further, the chord member 1 comprises a first channel steel 101 and a second channel steel 102, the first channel steel 101 and the second channel steel 102 are arranged relatively and are a pair of channel steels which are opposite to each other, the first channel steel 101 and the second channel steel 102 are connected through a plurality of steel plates 7, a third pin shaft hole 5 is arranged on each steel plate 7, the shear-resistant bailey is connected with the reinforcing chord member or the double-layer bailey through the third pin shaft hole 5, and the third pin shaft hole 5 facilitates connection between the structure and the structure.
Further, 2 sides of diagonal web members are in an I-shaped structure, and 2 ends of the diagonal web members are provided with notches 201 internally tangent to each other, so that the diagonal web members 2 and the diagonal web members 2 can be conveniently positioned and butted with each other. The length of the chord member 1 is 1.5-3 times of the length of the vertical web member 3, the length of the vertical web member 3 is 1.2-2 times of the length of the diagonal web member 2, and the design of the proportion meets the actual requirement.
The shear resistant Bailey is implemented as follows: a chord 1, an oblique web member 2 and a vertical web member 3 of a shear-resistant bailey are constructed in a one-to-one correspondence mode, a first pin shaft hole 401 is distributed at one end of the chord 1, the first pin shaft hole 401 corresponds to a male head on the shear-resistant bailey, a second pin shaft hole 402 is distributed at the other end of the chord 1, the second pin shaft hole 402 corresponds to a female head on the shear-resistant bailey, when the shear-resistant bailey is spliced with other bailey, the male head of the chord 1 of one bailey is inserted into the female head of the chord 1 of the other bailey, the first pin shaft holes 401 or the second pin shaft holes 402 of the two bailey are inserted into a bailey pin after being aligned, the bailey pin is a bailey pin matched with the original '321' bailey, and one shear-resistant bailey can be connected with the other shear-resistant bailey or can be connected with the original '321' bailey.
Further, the chord member 1 adopts the first channel-section steel 101 and the second channel-section steel 102 that mutually reverse mutually, also can adopt single square steel pipe or rectangle steel pipe, connects through a plurality of steel sheets 7 each other, and it has third round pin shaft hole 5 to open on the steel sheet 7, through third round pin shaft hole 5, can connect the strengthening chord member, or sets up double-deck bailey, and the strengthening chord member is the supporting strengthening chord member of former "321" bailey.
Further, the peripheral vertical web member 31 is formed by a third channel steel 301 and a fourth channel steel 302 which are opposite to each other and connected with each other through a plurality of rectangular steel plates 8, and a fourth pin shaft hole 6 is formed in each steel plate. And the bailey windows can be connected through the fourth pin shaft holes 6, two adjacent baires are connected into a whole, and the bailey windows are the bailey windows matched with the original 321 baires.
Although the reference numerals in the figures are used more here: the steel plate comprises a chord member 1, an oblique web member 2, a vertical web member 3, a third pin shaft hole 5, a fourth pin shaft hole 6, a steel plate 7, a rectangular steel plate 8, an external vertical web member 31, an internal vertical web member 32, a first channel steel 101, a second channel steel 102, a notch 201, a third channel steel 301, a fourth channel steel 302, a first pin shaft hole 401, a second pin shaft hole 402 and other terms, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120053888.0U CN214573368U (en) | 2021-01-08 | 2021-01-08 | A shear-resistant beret |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120053888.0U CN214573368U (en) | 2021-01-08 | 2021-01-08 | A shear-resistant beret |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214573368U true CN214573368U (en) | 2021-11-02 |
Family
ID=78367965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120053888.0U Expired - Fee Related CN214573368U (en) | 2021-01-08 | 2021-01-08 | A shear-resistant beret |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214573368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119466284A (en) * | 2024-12-12 | 2025-02-18 | 中国建筑第八工程局有限公司 | Lightweight bailey piece connected node |
-
2021
- 2021-01-08 CN CN202120053888.0U patent/CN214573368U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119466284A (en) * | 2024-12-12 | 2025-02-18 | 中国建筑第八工程局有限公司 | Lightweight bailey piece connected node |
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 | |
| CN103206010B (en) | A kind of assembling type steel structure prestressing force accentric support frame system | |
| CN110499825A (en) | Easy-to-repair prefabricated steel structure beam-column joint connection structure and its assembly method | |
| CN103206015B (en) | A kind of assembling type steel structure accentric support frame system | |
| CN110067185B (en) | Steel pipe-steel plate combined web steel-concrete combined box girder | |
| CN111749114A (en) | Structure and Construction Method of Negative Moment Zone of Steel Truss-UHPC Composite Girder Bridge | |
| CN110747996A (en) | A corrugated steel plate composite frame structure system and its application | |
| CN110029569B (en) | Corrugated steel web-truss chord UHPC combined box girder and construction method thereof | |
| CN214573368U (en) | A shear-resistant beret | |
| CN211947879U (en) | Assembled corrugated web steel box-UHPC (ultra high performance concrete) combined beam bridge | |
| CN210596977U (en) | A steel tube-steel plate composite web steel-concrete composite box girder | |
| CN111979891A (en) | A kind of semi-penetrating rectangular steel tube concrete composite truss bridge and construction method | |
| CN114482267B (en) | An assembled hollow corrugated sandwich steel tube concrete composite frame structure system | |
| CN108104263A (en) | A kind of novel fabricated steel-regeneration concrete combination frame structural system | |
| CN111305040A (en) | Cable-stayed bridge combined box girder adopting corrugated steel plate as diaphragm plate | |
| CN119754468B (en) | Space truss concrete combined arch shell structure and construction method thereof | |
| CN115748417A (en) | Corrugated steel web-segmented prestressed steel pipe concrete continuous combined bridge and construction method | |
| CN212270640U (en) | Cable-stayed bridge combined box girder adopting corrugated steel plate as diaphragm plate | |
| CN211228890U (en) | Novel steel-concrete-FRP combined structure | |
| CN219621940U (en) | Partially-coated steel-concrete combined truss | |
| CN207892021U (en) | A kind of novel fabricated steel-regeneration concrete combination frame structural system | |
| CN219137410U (en) | Assembled cantilever bent cap support and modularized prefabricated variable-height truss girder thereof | |
| CN116290340A (en) | Fabricated square steel pipe concrete node capable of comprehensively improving earthquake resistance and collapse resistance | |
| CN214246315U (en) | Large-span trapezoidal space steel pipe truss concrete floor structure | |
| CN213772892U (en) | A semi-through steel truss bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |