CN205046459U - Derive formula member reinforced structure and have its steel longeron of steel longeron - Google Patents
Derive formula member reinforced structure and have its steel longeron of steel longeron Download PDFInfo
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- CN205046459U CN205046459U CN201520781504.1U CN201520781504U CN205046459U CN 205046459 U CN205046459 U CN 205046459U CN 201520781504 U CN201520781504 U CN 201520781504U CN 205046459 U CN205046459 U CN 205046459U
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Abstract
The utility model discloses a steel longeron formula member reinforced structure of deriving. It includes upper chord, lower chord, erects web member and diagonal bracing, erects web member and diagonal bracing and all connects between upper chord and lower chord, erects node of web member, diagonal bracing and upper chord or lower chord sharing. This embodiment is still set up one and is derived the formula and connect the member on the steel longeron has had the member, connect member one end and be connected with the diagonal bracing, and the other end is continuous with the lower chord to the drift of reduction diagonal bracing, the stability and the bearing capacity of increase member. The utility model also provides a steel longeron is consolidated to the formula member of deriving that has above -mentioned structure.
Description
Technical field
The utility model relates to the ruggedized construction of steel truss girder in work progress and has the steel truss girder of this ruggedized construction, be particularly useful for steel girder member bar cross section more weak or due to rod member slenderness ratio comparatively large, reinforcing when rod member supporting capacity is not enough.
Background technology
At present, steel truss girder is more and more applied to bridge construction, main truss height greatly across girder steel is often controlled, in order to reduce the deadweight of bridge construction, the section selection of steel truss girder is the more according to the calculation of one-tenth bridge construction, the use of slender rod piece is restricted especially, reasonably selects rod member, can reduce 20 ~ 30% of steel truss girder deadweight.
Yellow large railway Yellow River Bridge is double track railway, and be designed to parallel chords steel truss girder, maximum rod member length 20.9m, rod member slenderness ratio is 105, in steel truss girder work progress, transfinites during rod member pressurized.
Summary of the invention
In prior art, steel girder member bar cross section is added senior general simply and increases design and construction engineering quantity, steel girder member bar may need to carry out reinforcement reinforcing in many cross sections simultaneously, the special rolling-mill section customization processing that steel truss girder adopts, the change of bar cross section can cause some changes arranged, and the utility model provides a kind of steel truss girder to derive formula reinforcement of rod pieces structure, adopts and increases bearing diagonal, reduce rod member slenderness ratio, improve load bearing capability of a member.
The utility model solves the technical scheme that its technical problem adopts:
A kind of steel truss girder derives formula reinforcement of rod pieces structure, comprise upper chord, lower chord and diagonal web member, described diagonal web member is connected between described upper chord and lower chord, also comprises connecting rod, described connecting rod one end is connected with described diagonal web member, and the other end is connected with described lower chord.
Derive formula reinforcement of rod pieces structure according to the steel truss girder of the utility model embodiment and derive rod member by having on rod member at steel truss girder, rod member is connected with lower edge main truss, reduces the drift of diagonal web member, thus increases the stability of rod member.
In addition, derive formula reinforcement of rod pieces structure according to the steel truss girder of the utility model embodiment and can also have following additional technical feature:
Preferably, described connecting rod is obliquely installed and incline direction is contrary with coupled diagonal web member incline direction.It can thus be appreciated that connecting rod can increase the supporting capacity of diagonal web member.
Preferably, for being hinged between described connecting rod and described lower chord, for being fixedly connected with between connecting rod with described diagonal web member.For being hinged between connecting rod and lower chord, being both conducive to construction and installation, and being convenient to again, according to the angle between the different adjustment connecting rod at diagonal web member angle of inclination and lower chord, be conducive to firm installation.
Preferably, also comprise perpendicular web member, described perpendicular web member, diagonal web member and upper chord or lower chord share a node.
Preferably, the two ends of described connecting rod are connected on described diagonal web member respectively by upper anchor ear and lower anchor ear.According to welding manner, weld the globality by destroying original rod member, the residual stress of welding affects the supporting capacity of rod member, also destroys rod member paint simultaneously.With shaped steel (i.e. connecting rod), adjacent two rod members are connected, connect two steel plates (upper and lower cover plates of anchor ear) at shaped steel two ends, utilize fining twisted steel by Interal fixation, adopt the mode of two ends anchor ear, be connected with lower edge by web member, the frictional force of anchor ear prevents rod member relative displacement.
Preferably, described upper anchor ear comprises anchor ear upper cover plate, upper anchor ear lower cover, the first screw-thread steel and the first nut, described upper anchor ear upper cover plate, upper anchor ear lower cover are located at the both sides of diagonal web member, and the both sides of described upper anchor ear upper cover plate, upper anchor ear lower cover are fastenedly connected with the first screw-thread steel and the first nut; Described upper anchor ear lower cover and described connecting rod affixed.
Preferably, described diagonal web member cross section is in " work " font, and also comprise the first stiffened steel plates and/or the second stiffened steel plates, described first stiffened steel plates is welded on the inside of described diagonal web member; Between the two ends that described second stiffened steel plates is welded on described upper anchor ear upper cover plate or upper anchor ear lower cover and the side of diagonal web member.
Preferably, described lower anchor ear comprises lower anchor ear upper cover plate, lower anchor ear lower cover, the second screw-thread steel and the second nut, described lower anchor ear upper cover plate, lower anchor ear lower cover are located at the both sides of lower chord, and the both sides of lower anchor ear upper cover plate, lower anchor ear lower cover are fastenedly connected with the second screw-thread steel and the second nut, described lower anchor ear upper cover plate is installed with junction plate, and this junction plate is hinged by pin-and-hole, pin and described connecting rod.
Preferably, also comprise the 3rd stiffened steel plates and/or the 4th stiffened steel plates, described 3rd stiffened steel plates is welded between described junction plate and lower anchor ear upper cover plate; Between the two ends that described 4th stiffened steel plates is welded on described lower anchor ear upper cover plate or lower anchor ear lower cover and the side of lower chord.
The utility model additionally provides a kind of derivative formula reinforcement of rod pieces steel truss girder, and the steel truss girder that it has above-mentioned any one derives formula reinforcement of rod pieces structure.
Effective effect of this derivative formula reinforcement of rod pieces steel truss girder is: the supporting capacity improving diagonal web member is not destroyed original diagonal web member simultaneously.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the overall structure figure that the utility model steel truss girder derives formula reinforcement of rod pieces structure;
Fig. 2 is the upper hooping structure elevation that the utility model steel truss girder derives formula reinforcement of rod pieces structure;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is the structure chart of the first stiffened steel plates;
Fig. 5 is the structure chart of the second stiffened steel plates;
Fig. 6 is the lower hooping structure elevation that the utility model steel truss girder derives formula reinforcement of rod pieces structure;
Fig. 7 is the side view of Fig. 6;
Fig. 8 is the structure chart of junction plate;
Fig. 9 is the structure chart of the 3rd stiffened steel plates;
Figure 10 is the structure chart of the 4th stiffened steel plates.
description of reference numerals:
Upper chord 1; Lower chord 2; Diagonal web member 3; Perpendicular web member 4; Connecting rod 5; Upper anchor ear 6; Lower anchor ear 7; Upper anchor ear upper cover plate 8; Upper anchor ear lower cover 9; First screw-thread steel 10; First nut 11; First stiffened steel plates 12; Second stiffened steel plates 13; Lower anchor ear upper cover plate 14; Lower anchor ear lower cover 15; Second screw-thread steel 16; Second nut 17; Junction plate 18; Pin 19; 3rd stiffened steel plates 20; 4th stiffened steel plates 21.
Detailed description of the invention
Be described below in detail embodiment of the present utility model, wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
Describe with reference to the accompanying drawings and derive formula reinforcement of rod pieces structure according to the steel truss girder of the utility model embodiment.The steel truss girder that Fig. 1-Figure 10 specifically show the present embodiment derives formula reinforcement of rod pieces structure.It comprises upper chord 1, lower chord 2, perpendicular web member 4 and diagonal web member 3, and perpendicular web member 4 and diagonal web member 3 are all connected between upper chord 1 and lower chord 2, and perpendicular web member 4, diagonal web member 3 and upper chord 1 or lower chord 2 share a node.The present embodiment has on rod member at steel truss girder and also sets up a derivative formula connecting rod 5, and connecting rod 5 one end is connected with diagonal web member 3, and the other end is connected with lower chord 2, thus reduces the drift of diagonal web member 3, increases stability and the bearing capacity of rod member.
For being hinged between connecting rod 5 and lower chord 2, for being fixedly connected with between connecting rod 5 with diagonal web member 3.For being hinged between connecting rod 5 and lower chord 2, being both conducive to construction and installation, and being convenient to again, according to the angle between the different adjustment connecting rod 5 at diagonal web member 3 angle of inclination and lower chord 2, be conducive to firm installation.
The two ends of connecting rod 5 are connected on diagonal web member 3 respectively by upper anchor ear 6 and lower anchor ear 7.According to welding manner, weld the globality by destroying original rod member, the residual stress of welding affects the supporting capacity of rod member, also destroys rod member paint simultaneously.With shaped steel (i.e. connecting rod 5), adjacent two rod members are connected, two steel plates (upper and lower cover plates of anchor ear) are connected at shaped steel two ends, utilize fining twisted steel by Interal fixation, adopt the mode of two ends anchor ear, be connected with lower chord 2 by abdomen brace 3, the frictional force of anchor ear prevents rod member relative displacement.
Upper anchor ear 6 comprises anchor ear upper cover plate 8, upper anchor ear lower cover, the first screw-thread steel 10 and the first nut 11, upper anchor ear upper cover plate 8, upper anchor ear lower cover are located at the both sides of diagonal web member 3, and the both sides of upper anchor ear upper cover plate 8, upper anchor ear lower cover the first screw-thread steel 10 and the first nut 11 are fastenedly connected.Upper anchor ear lower cover and connecting rod 5 affixed.Diagonal web member 3 cross section, in " work " font, also comprises the first stiffened steel plates 12 and/or the second stiffened steel plates 13.First stiffened steel plates 12 is welded on the inside of diagonal web member 3.Between the two ends that second stiffened steel plates 13 is welded on anchor ear upper cover plate 8 or upper anchor ear lower cover and the side of diagonal web member 3.
Lower anchor ear 7 comprises lower anchor ear upper cover plate 14, lower anchor ear lower cover 15, second screw-thread steel 16 and the second nut 17.Lower anchor ear upper cover plate 14, lower anchor ear lower cover 15 are located at the both sides of lower chord 2, and the both sides of lower anchor ear upper cover plate 14, lower anchor ear lower cover 15 second screw-thread steel 16 and the second nut 17 are fastenedly connected, lower anchor ear upper cover plate 14 is installed with junction plate 18, and this junction plate 18 is hinged with connecting rod 5 by pin-and-hole, pin 19.This lower anchor ear 7 structure also comprises the 3rd stiffened steel plates 20 and/or the 4th stiffened steel plates the 21, three stiffened steel plates 20 is welded between junction plate 18 and lower anchor ear upper cover plate 14.Between the two ends that 4th stiffened steel plates 21 is welded on lower anchor ear upper cover plate 14 or lower anchor ear lower cover 15 and the side of lower chord 2.
With reference to shown in Fig. 1, the utility model additionally provides a kind of derivative formula reinforcement of rod pieces steel truss girder, and the steel truss girder that it has above-mentioned any one derives formula reinforcement of rod pieces structure.
As a concrete example of this steel truss girder, wherein lower chord 2 is in box-type section, length 10m.Diagonal web member 3 is in I-shaped cross-section, and length 17m is the rod member be reinforced.Connecting rod 5 is 2I45a i iron, length 6.20m.Anchor ear upper cover plate is the processing of 1100 × 600 × 20mm steel plate.Anchor ear lower cover is the processing of 1100 × 600 × 20mm steel plate.First screw-thread steel 10: single anchor ear 4 Φ 32 fining twisted steels, single pretension 30t.First nut 11: fining twisted steel nut, upper anchor ear 6 totally 8.First stiffened steel plates 12:2cm steel plate processing, 790mm × 390mm, totally 2 pieces.Second stiffened steel plates 13:2cm steel plate processing, 100 × 250mm, totally 2 pieces.Lower anchor ear upper cover plate 14:1100 × 600 × 20mm steel plate processing.Lower anchor ear lower cover 15:1100 × 600 × 20mm steel plate processing.Junction steel plate: 500 × 350 × 20mm steel plate is processed, and opens φ 52mm pin-and-hole.Stiffened steel plates: 2cm steel plate makes, with upper and lower cover plates Plate Welding.Pin 19: φ 50mm pin, length 45cm, No. 45 quenched and tempered steel make, Quenching Treatment.3rd stiffener: lower anchor ear upper cover plate 14 welds with junction steel plate, 2cm steel plate is processed.Second screw-thread steel 16: φ 32 fining twisted steel, single pretension 30t, lower anchor ear 7 totally 4.Second nut 17: fining twisted steel anchorage nut, lower anchor ear 7 totally 8.
The construction method of the steel truss girder ruggedized construction of the present embodiment is: after steel truss girder installation, and anchor ear 7 under steel truss girder lower chord 2 is installed, utilizes jack by fining twisted steel pretension on lower anchor ear 7, single pretension 30t.Connecting rod 5 is installed again, connecting rod 5 and lower anchor ear 7 adopt Φ 50mm pin pin joint, connecting rod 2I45a i iron and upper anchor ear 6 closely connected with steel truss girder brace (being reinforced rod member), then install anchor ear upper cover plate 8, utilize Φ 32 fining twisted steel pretension, upper anchor ear 6 is connected reliably with brace.
Although illustrate and described embodiment of the present utility model; Those having ordinary skill in the art will appreciate that: multiple change, amendment, replacement and modification can be carried out to these embodiments when not departing from principle of the present utility model and aim; Scope of the present utility model is by claim and equivalents thereof.
Claims (10)
1. a steel truss girder derives formula reinforcement of rod pieces structure, comprise upper chord, lower chord and diagonal web member, described diagonal web member is connected between described upper chord and lower chord, it is characterized in that, also comprise connecting rod, described connecting rod one end is connected with described diagonal web member, and the other end is connected with described lower chord.
2. steel truss girder according to claim 1 derives formula reinforcement of rod pieces structure, it is characterized in that, described connecting rod is obliquely installed and the coupled diagonal web member incline direction of incline direction is contrary.
3. steel truss girder according to claim 1 derives formula reinforcement of rod pieces structure, it is characterized in that, for being hinged between described connecting rod and described lower chord, for being fixedly connected with between connecting rod with described diagonal web member.
4. steel truss girder according to claim 1 derives formula reinforcement of rod pieces structure, it is characterized in that, also comprises perpendicular web member, and described perpendicular web member, diagonal web member and upper chord or lower chord share a node.
5. the steel truss girder according to any one of claim 1-4 derives formula reinforcement of rod pieces structure, it is characterized in that, the two ends of described connecting rod are connected on described diagonal web member respectively by upper anchor ear and lower anchor ear.
6. steel truss girder according to claim 5 derives formula reinforcement of rod pieces structure, it is characterized in that, described upper anchor ear comprises anchor ear upper cover plate, upper anchor ear lower cover, the first screw-thread steel and the first nut, described upper anchor ear upper cover plate, upper anchor ear lower cover are located at the both sides of diagonal web member, and the both sides of described upper anchor ear upper cover plate, upper anchor ear lower cover are fastenedly connected with the first screw-thread steel and the first nut; Described upper anchor ear lower cover and described connecting rod affixed.
7. steel truss girder according to claim 6 derives formula reinforcement of rod pieces structure, it is characterized in that, described diagonal web member cross section is in " work " font, and also comprise the first stiffened steel plates and/or the second stiffened steel plates, described first stiffened steel plates is welded on the inside of described diagonal web member; Between the two ends that described second stiffened steel plates is welded on described upper anchor ear upper cover plate or upper anchor ear lower cover and the side of diagonal web member.
8. steel truss girder according to claim 5 derives formula reinforcement of rod pieces structure, it is characterized in that, described lower anchor ear comprises lower anchor ear upper cover plate, lower anchor ear lower cover, the second screw-thread steel and the second nut, described lower anchor ear upper cover plate, lower anchor ear lower cover are located at the both sides of lower chord, and the both sides of lower anchor ear upper cover plate, lower anchor ear lower cover are fastenedly connected with the second screw-thread steel and the second nut, described lower anchor ear upper cover plate is installed with junction plate, and this junction plate is hinged by pin-and-hole, pin and described connecting rod.
9. steel truss girder according to claim 8 derives formula reinforcement of rod pieces structure, it is characterized in that, also comprises the 3rd stiffened steel plates and/or the 4th stiffened steel plates, and described 3rd stiffened steel plates is welded between described junction plate and lower anchor ear upper cover plate; Between the two ends that described 4th stiffened steel plates is welded on described lower anchor ear upper cover plate or lower anchor ear lower cover and the side of lower chord.
10. a derivative formula reinforcement of rod pieces steel truss girder, is characterized in that, its steel truss girder had described in any one of claim 1-9 derives formula reinforcement of rod pieces structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520781504.1U CN205046459U (en) | 2015-10-10 | 2015-10-10 | Derive formula member reinforced structure and have its steel longeron of steel longeron |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024217A (en) * | 2018-07-17 | 2018-12-18 | 中铁大桥勘测设计院集团有限公司 | The connection structure and welding method of web member and chord member |
| CN109537473A (en) * | 2018-12-11 | 2019-03-29 | 佛山科学技术学院 | A kind of large span truss bridge cantilever dress temporary reinforcing device |
| CN110291264A (en) * | 2017-02-07 | 2019-09-27 | 施塔尔起重机系统有限责任公司 | The supporting member of segmental structure design |
-
2015
- 2015-10-10 CN CN201520781504.1U patent/CN205046459U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110291264A (en) * | 2017-02-07 | 2019-09-27 | 施塔尔起重机系统有限责任公司 | The supporting member of segmental structure design |
| CN110291264B (en) * | 2017-02-07 | 2022-03-22 | 施塔尔起重机系统有限责任公司 | Supporting element with segmented structural design |
| CN109024217A (en) * | 2018-07-17 | 2018-12-18 | 中铁大桥勘测设计院集团有限公司 | The connection structure and welding method of web member and chord member |
| CN109537473A (en) * | 2018-12-11 | 2019-03-29 | 佛山科学技术学院 | A kind of large span truss bridge cantilever dress temporary reinforcing device |
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