CN203593945U - Railway continuous beam-arch-steel bar suspender combined structure - Google Patents
Railway continuous beam-arch-steel bar suspender combined structure Download PDFInfo
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- CN203593945U CN203593945U CN201320761312.5U CN201320761312U CN203593945U CN 203593945 U CN203593945 U CN 203593945U CN 201320761312 U CN201320761312 U CN 201320761312U CN 203593945 U CN203593945 U CN 203593945U
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- arch
- girder
- suspension rod
- continuous beam
- steel bar
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- 229910000831 Steel Inorganic materials 0.000 title abstract description 12
- 239000010959 steel Substances 0.000 title abstract description 12
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 6
- 239000000725 suspension Substances 0.000 claims description 32
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
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Abstract
The utility model relates to a railway continuous beam-arch-steel bar suspender combined structure. Steel wire bundles or steel strand suspenders are adopted in most of continuous beam-arch combined structures, and the suspenders are prone to being rusted and fatigue. Side pivots at the two ends of a main beam are arranged on two side abutment piers in an erected mode, and two central pivots in the middle of the main beam are supported by a main pier. Transverse edges above the two central pivots of the main beam are provided with arch bases, and arch-shaped arch ribs are arranged between the arch bases on the single side edges. A transverse support is arranged between the arch ribs on the two sides, and vertical light circle solid alloy steel bar suspenders are arranged between the arch ribs and the main beam. The railway continuous beam-arch-steel bar suspender combined structure is a combined structure system composed of an arch type structure system, a beam type structure system and a steel bar suspender system, the stress performance of a bridge is improved, force transmitting is accurate, the fatigue stress amplitude of the suspenders in the beam-arch combined structure is reduced, the rigidity of the combined structure is improved, and the durability of the bridge structure is enhanced.
Description
Technical field
the utility model belongs to bridge construction technical field of buildings, is specifically related to a kind of railway continuous beam-arch-rod iron suspension rod combining structure.
Background technology
In bridge construction, continuous beam-arch composite bridge span ability is large, and structural performance is superior, can effectively reduce the building height of girder, and handsome in appearance.Along with the development of high-speed railway, be used in more and more 100m～200m large span and crossed on the railroad bridge of limited public affairs, iron grade separation and navigable river of headroom in recent years.In continuous beam-arch combined structure system, suspension rod is local pressure member, requires to have high tensile strength, stable high elastic modulus, good endurance and resistance to corrosion.For built most of continuous beam-arch composite bridges, all adopt traditional steel tendon or steel strand suspension rod, the accident causing due to suspension rod corrosion, fatigue has caused the attention of the problems such as the design of people to suspension rod and anticorrosion, inspection, replacing.
Summary of the invention
The purpose of this utility model is to provide a kind of railway continuous beam-arch-rod iron suspension rod combining structure that is applicable to the bridge composite structure that span is large, building height is low and has good structural static, power performance and safety.
The technical scheme that the utility model adopts is:
A kind of railway continuous beam-arch-rod iron suspension rod combining structure, is provided with girder, it is characterized in that:
The limit fulcrum at girder two ends is erected on the abutment pier of both sides, and two place's central bearing points at girder middle part are supported by main pier;
The horizontal dual-side edge of girder two central bearing point beam faces is provided with abut, is provided with the arch rib of arch between the abut on single side edge;
Between the arch rib of both sides, be provided with horizontal stull, between arch rib and girder, be provided with vertical suspension rod.
Arch rib includes the string pipe of upper and lower two arches, between upper and lower two string pipes, connects by vertical batten plate.
Winding up of girder both lateral sides arch rib is provided with horizontal stull between pipe and between lower chord tube, is provided with and is the web member that " W " shape distributes between upper and lower two-layer stull.
Suspension rod is the solid alloy steel rod of light circle, and hinge is longitudinally established in upper end, and hinge is laterally established in lower end, and stretching end is located at upper end.
The utlity model has following advantage:
The utility model is the combined structure system that arch-type structure system, girder structure system and rod iron suspension rod form, bridge force-bearing performance improves, power transmission is clear and definite, reduced the Fatigue Stress Amplitude of beam-arch combining structure middle hanger simultaneously, increase the rigidity of combining structure, strengthen the durability of bridge construction, therefore can effectively increase the span of bridge and the safety that improves bridge construction.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model cross-sectional configuration schematic diagram.
In figure, 1-main span, 2-end bay, the main pier of 3-, 4-abutment pier, 5-girder, 6-arch rib, 7-stull, 8-suspension rod, 9-abut.
The specific embodiment
Below in conjunction with the specific embodiment, the utility model is described in detail.
A kind of railway continuous beam-arch-rod iron suspension rod combining structure that the utility model relates to is the combined structure system that arch-type structure system, girder structure system and rod iron suspension rod form.
Referring to Fig. 1, combining structure is provided with girder 5, and girder 5 two ends are limit fulcrum, and middle part arranges two place's central bearing points in girder 5 longitudinal centre line bilateral symmetry, and the limit fulcrum at girder 5 two ends is erected on both sides abutment pier 4, and two place's central bearing points at girder 5 middle parts are supported by main pier 3.The vertical deck-molding of girder 5 is maximum value at central bearing point place, and deck-molding is successively decreased to longitudinal both sides from central bearing point.
Horizontal dual-side edge, 5 liang of central bearing point tops of girder is provided with abut 9, is provided with the arch rib 6 of arch between the abut 9 on single side edge, and it is fixed with the girder 5 of main Dun3Ding that abut 9 is stretched into respectively at arch rib 6 two ends.Referring to Fig. 2, arch rib 6 includes the string pipe of upper and lower two arches, between upper and lower two string pipes, connects by vertical batten plate, makes the lateral cross section of arch rib 6 be dumb-bell shape.Winding up of girder 5 both lateral sides arch ribs 6 is provided with horizontal stull 7 between pipe and between lower chord tube, is provided with and is the web member that " W " shape distributes between upper and lower two-layer stull 7.
Between the arch rib 6 at girder 5 both lateral sides edges, be provided with horizontal stull 7, between arch rib 6 and girder 5, be provided with vertical suspension rod 8, suspension rod 8 is the main tensional elements that connect arch rib 6 and girder 5.Suspension rod 8 is the solid alloy steel rod of light circle, and hinge is longitudinally established in upper end, and hinge is laterally established in lower end, and stretching end is located at upper end.
Whole combining structure is take two place's central bearing points of girder 5 as separation, be divided into the end bay 2 of central main span 1 and both sides, girder structure system and rod iron suspension rod that main span 1 has comprised arch-type structure system, girder 5 and bridge pier composition that arch rib 6 and stull 7 form, 2 of end bays include the girder structure system of girder 5 and bridge pier composition.Main span is designed to 176m across footpath, and end bay is designed to 86m across footpath, Minimum Navigable headroom 10m under bridge, and main bridge combination is 87.6m+176m+87.6m across footpath, main bridge is long is 351.6m.
Girder 5 adopts cross section, the two chamber of single case, the deck-molding 11.0m of central bearing point place, the wide 16m of back, span centre deck-molding 5.5m, the wide 15.0m of back, case bottom width 11.0m; Thick 40～the 95cm of top board, the thick 40～120cm of base plate, the thick 50 ㎝～100cm of web, in establish the diaphragm of thick 0.4m across span centre, central bearing point is established the middle cross beam of wide 4.0m, limit fulcrum is established the end floor beam of wide 1.6m.Suspension rod 8 places establish the crossbeam of high 2.0m, and case back is provided with 2% horizontal wall inscription.
The arch of arch rib 6 adopts second-degree parabola, ratio of rise to span f/L=1/5, rise f=35.2m.Arch rib is encased structures, dumbbell-shaped section, upper and lower string tube center distance 2.20m, the high 3.3m of arch rib, outer diameter of steel pipes 110 ㎝, wall thickness 20 ㎜, perfusion C55 slightly expanded concrete in steel pipe.On arch rib 6, between lower chord tube, adopting thickness is the batten plate connection of 14 ㎜, batten plate spacing 80 ㎝, and at arch springing, place is widened to 110cm, adopts φ 25 ㎜ steel bar rods between batten plate, vertical spacing 45 ㎝ of pull bar, bridge longitudinal pitch 50 ㎝.In steel pipe and between batten plate, all pour into C55 slightly expanded concrete.
It is cited that content of the present utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model manual, is claim of the present utility model and contains.
Claims (4)
1. railway continuous beam-arch-rod iron suspension rod combining structure, is provided with girder (5), it is characterized in that:
It is upper that the limit fulcrum at girder (5) two ends is erected at both sides abutment pier (4), and two place's central bearing points at girder (5) middle part are supported by main pier (3);
The horizontal dual-side edge of girder (5) two central bearing point beam faces is provided with abut (9), is provided with the arch rib (6) of arch between the abut (9) on single side edge;
Between both sides arch rib (6), be provided with horizontal stull (7), between arch rib (6) and girder (5), be provided with vertical suspension rod (8).
2. a kind of railway continuous beam-arch-rod iron suspension rod combining structure according to claim 1, is characterized in that:
Arch rib (6) includes the string pipe of upper and lower two arches, between upper and lower two string pipes, connects by vertical batten plate.
3. a kind of railway continuous beam-arch-rod iron suspension rod combining structure according to claim 2, is characterized in that:
Winding up of girder (5) both lateral sides arch rib (6) is provided with horizontal stull (7) between pipe and between lower chord tube, is provided with and is the web member that " W " shape distributes between upper and lower two-layer stull (7).
4. a kind of railway continuous beam-arch-rod iron suspension rod combining structure according to claim 3, is characterized in that:
Suspension rod (8) is the solid alloy steel rod of light circle, and hinge is longitudinally established in upper end, and hinge is laterally established in lower end, and stretching end is located at upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320761312.5U CN203593945U (en) | 2013-11-28 | 2013-11-28 | Railway continuous beam-arch-steel bar suspender combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320761312.5U CN203593945U (en) | 2013-11-28 | 2013-11-28 | Railway continuous beam-arch-steel bar suspender combined structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203593945U true CN203593945U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320761312.5U Expired - Lifetime CN203593945U (en) | 2013-11-28 | 2013-11-28 | Railway continuous beam-arch-steel bar suspender combined structure |
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| CN (1) | CN203593945U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105046005A (en) * | 2015-07-27 | 2015-11-11 | 中铁工程设计咨询集团有限公司 | Method for determining allowable fatigue stress range of high-strength steel bar base material and connection structure of base material |
| CN106835938A (en) * | 2017-04-05 | 2017-06-13 | 中铁二院成都勘察设计研究院有限责任公司 | A kind of beam-arch structure and beam-arch composition bridge |
-
2013
- 2013-11-28 CN CN201320761312.5U patent/CN203593945U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105046005A (en) * | 2015-07-27 | 2015-11-11 | 中铁工程设计咨询集团有限公司 | Method for determining allowable fatigue stress range of high-strength steel bar base material and connection structure of base material |
| CN105046005B (en) * | 2015-07-27 | 2017-12-29 | 中铁工程设计咨询集团有限公司 | The method for determining high tensile reinforcement mother metal and its allowable stress range of fatigue of attachment structure |
| CN106835938A (en) * | 2017-04-05 | 2017-06-13 | 中铁二院成都勘察设计研究院有限责任公司 | A kind of beam-arch structure and beam-arch composition bridge |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140514 |
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| CX01 | Expiry of patent term |