CN1070240A - Composite bridge - Google Patents
Composite bridge Download PDFInfo
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- CN1070240A CN1070240A CN 92109916 CN92109916A CN1070240A CN 1070240 A CN1070240 A CN 1070240A CN 92109916 CN92109916 CN 92109916 CN 92109916 A CN92109916 A CN 92109916A CN 1070240 A CN1070240 A CN 1070240A
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- pier
- bearing
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- flexible
- composite bridge
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Abstract
A kind of composite bridge that is applicable to that at least one or a few joint group becomes, it includes beam, hinge, bearing, flexible pier, rigidity pier, be characterized in: two groups breaking joint about the beam-ends at every spanning middle part of employing hinged girder leaves and is divided into, beam links to each other with fixed bearing with the rigidity pier, is installed on laminated rubber bearing on the flexible pier top.The present invention has been owing to fundamentally changed the bridge pier stress, and it is low therefore to have an overall cost, and the construction period is short, and applicability is strong, for bridge pier lightness, structure rationalization have been opened up new approach.
Description
The invention belongs to bridge class technical field, specifically a kind of combined type highway or railway bridge.
We know, existing several thousand of bridging from ancient times to the present is historical.Along with the development of society, the progress of science and technology, particularly in today of development in Hi-Tech, it is particularly important that the bridging technology just seems.The beam bridge of present stage uses the most extensive, simply supported girder bridge wherein is the conventional bridge of popularizing the most, because every Kong Liang of this bridge links to each other respectively with the bridge pier platform of its supporting, one end is a fixed bearing, one end is a freely movable bearing, and bridge pier is stressed separately, directly bears the horizontal force that every Kong Liang transmits, usually bridge pier body cross section is eccentric controls with the displacement of pier top, causes the thick fat hypertrophy of bridge pier.And at present both at home and abroad adopted flexible pier and hinged beam bridge then are improvement to simply supported beam, but also there is weak point.For flexible pier, because (the beam body is subjected to the elongation of vertical load in the beam displacement that various factors produces, the beam body is flexible during year variations in temperature, the contraction of beam body concrete and creep and the influence in bearing slit) be the transmission that adds up entirely, increased the beam displacement, pass to the displacement of Dun Ding and also big to the influence of circuit on the bridge, connection is long long more, and contradiction is outstanding more.For hinged beam bridge, the stressed complexity of the flexible hinge of welding is difficult for changing, and is subjected to the effect of fatigue stress and influences application life, adopts benzvalene form rubber freely movable bearing to cost an arm and a leg.
The purpose of this invention is to provide and a kind ofly improve the stress of bridge pier and reach and reduce the cross section, save material, reduce the composite bridge of cost.
The object of the present invention is achieved like this: a kind of composite bridge that is applicable to that at least one or a few joint group becomes, it includes beam, hinge, bearing, flexible pier, rigidity pier, it is characterized in that: two groups breaking joint about the beam-ends at every spanning middle part of employing hinged girder leaves and is divided into, beam links to each other with fixed bearing with the rigidity pier, is installed on laminated rubber bearing on the flexible pier top.Hinged between the above-mentioned beam preferably adopts free rotating hinge to connect, and the flexible pier top is provided with the locating slot of a spacing laminated rubber bearing.
Characteristics of the present invention are:
1,, basically brake force (or tractive force) is passed to the rigidity pier of breaking joint pier both sides respectively by hinged girder and fixed bearing.
2, hinged girder keeps the simply supported beam duty, and the beam-ends displacement direction of every Kong Liang that vertical load produces is opposite, has avoided the transmission that adds up of beam lower edge elongation, and has offset to some extent.
3, hinged slit is little, makes hole transmission displacement little.
4, the beam displacement of various factors generation when flexible pier transmits, is shared a part by the permission shear strain of neoprene bearing by neoprene bearing, has reduced the displacement of pier top.
5, the horizontal force direction to breaking joint pier (not establishing the bridge pier of hinge corresponding to middle beam-ends) that produces of the temperature deformation of per two groups of hinged girders is opposite, waiting when striding symmetric arrangement horizontal force almost to offset, can offset major part during asymmetric arrangement.
6, the flexible pier pier shaft is subjected to pier top mobile load eccentric bending moment and vertical wind-force to do the time spent, and Liang Yutai produces the power opposite with external force direction as the horizontal supporting of Dun Ding, and pier shaft internal force is reduced.
The present invention is owing to vertically there is being hinged girder to link to each other with the rigidity pier, spacing at the positioner that the pier back timber end outside is laterally arranged, combine as a whole between two of every Kong Liang, as a common stress system, its globality, stability and shock resistance are all better, because the superiority of structure stress, more suitable than other bridge-type, safety, economical, compare with the steel support flexible pier, bridge pier master muscle consumption can be saved about 40%, the bridge pad steel using amount can be saved about 70%, quantity of masonry is slightly economized, compare with heavy pier, save concrete seven about 0%, but will use a small amount of reinforcing bar, be equivalent to 1 ton of reinforcing bar average energy and save the 80-90 cubic meter of concrete, overall target is that every linear meter(lin.m.) bridge saves little cost 15-20%.
Because a large amount of savings of trowel used for plastering soil amount, raw material and freight charges, labour and machinery are all greatly reduced, especially in relatively more difficult foundation construction, can save a large amount of digging the base earthwork and draw water expense, in general, composite bridge not only cost is low, and the construction period is short, applicability is strong, for bridge pier lightness, structure rationalization have been opened up new approach.
The invention will be further described below with reference to accompanying drawing.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the hinged girder articulated structure schematic diagram of Fig. 1.
Fig. 3 is the beam section structure schematic diagram of Fig. 1.
By shown in Figure 1, be example with per four hole beams, 1 is the rigidity pier, and 2 is beam, and 3 is flexible pier, and 4 is rigid table.Leave on the flexible pier at connection spanning middle part be divided into about two groups breaking joint 5, and be to adopt hinge 6 to connect between remaining beam, adopt fixed bearing 7 between beam and the rigidity pier and link to each other, flexible pier pushes up and is provided with laminated rubber bearing 8.Referring to Fig. 2,3, hinge 6 is to be made of steel pin 9 and carrier bar 10, and pin links to each other with anchor rib 13 with interior anchor plate 12 by the outer anchor plate 11 that is fixed together, when precast beam, be anchored in the beam, in the boring of carrier bar two ends, be enclosed within on the pin, constitute free rotating hinge.The position of hinge is located at the intersection point of bearing center line and neutral axis of the beam, each symmetry of the two ends of every beam is established two pins, the pin at every Kong Liang two ends and neighbour stride the corresponding pin of beam-ends with carrier bar hinged (if curved bridge then the carrier bar broken line arrange, and strengthen with stiffener).Flexible pier top is provided with the locating slot 15 of a spacing laminated rubber bearing 8, and at the bottom of the built-in beam of bearing top in the steel bar 14 of bearing, and the locating slot of pier top bearing is put in the bottom surface of bearing.For lateral displacement that prevents beam and the oscillation crosswise that reduces beam, after setting a roof beam in place, be fixed with a beam positioner in the outside of beam end, this device is by burying location angle steel 16(or support underground in the beam-ends outside), facade props up the line with rubber pad and pastes beam 17, links to be one between two of every Kong Liang.Present embodiment is one of low clearance reinforced concrete beam type of attachment.Laminated rubber bearing of the present invention can reduce the percussion of dynamic load to beam and bridge pier, has simple and easy, suitable, economic advantage, it and hinged girder, flexible pier are combined, three's characteristics have been concentrated, not only can maximize favourable factors and minimize unfavourable ones, and produced new superiority, and the displacement of pier top is obviously reduced, also reduced influence simultaneously to circuit on the bridge.
Claims (5)
1, a kind of composite bridge that is applicable to that at least one or a few joint group becomes, it includes beam, hinge, bearing, flexible pier, rigidity pier, it is characterized in that: two groups breaking joint about the beam-ends at every spanning middle part of employing hinged girder leaves and is divided into, beam links to each other with fixed bearing with the rigidity pier, is installed on laminated rubber bearing on the flexible pier top.
2, composite bridge according to claim 1 is characterized in that: hinged between the beam is to adopt free rotating hinge to connect.
3, composite bridge according to claim 1 is characterized in that: combine as a whole between two of every Kong Liang.
4, composite bridge according to claim 1 is characterized in that: the flexible pier top is provided with the locating slot of a spacing laminated rubber bearing.
5, composite bridge according to claim 1 is characterized in that: be fixed with a beam positioner in the outside of beam end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109916 CN1070240A (en) | 1992-09-25 | 1992-09-25 | Composite bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109916 CN1070240A (en) | 1992-09-25 | 1992-09-25 | Composite bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1070240A true CN1070240A (en) | 1993-03-24 |
Family
ID=4944467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92109916 Pending CN1070240A (en) | 1992-09-25 | 1992-09-25 | Composite bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1070240A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427683C (en) * | 2003-05-12 | 2008-10-22 | 上海市政工程设计研究院 | Wide pier with canopy beam |
| CN102787551A (en) * | 2012-07-16 | 2012-11-21 | 长沙理工大学 | Method for determining small bridge mixed continuous system structure in short pier prestressed concrete |
| CN104727212A (en) * | 2015-02-27 | 2015-06-24 | 郑州大学 | Method for expressing two curved box girder bridge bending moment internal forces without considering supporting eccentric distance |
| CN107988857A (en) * | 2017-11-28 | 2018-05-04 | 中铁第四勘察设计院集团有限公司 | A kind of semifixed continuous beam of straddle-type monorail |
| CN109344552A (en) * | 2018-11-29 | 2019-02-15 | 中铁二院工程集团有限责任公司 | Suspension type monorail bridge pier and its design method |
| CN109505237A (en) * | 2018-11-20 | 2019-03-22 | 华汇工程设计集团股份有限公司 | Girder longitudinal connecting structure and construction method at a kind of steel reinforced concrete combined bridge expansion joint |
-
1992
- 1992-09-25 CN CN 92109916 patent/CN1070240A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427683C (en) * | 2003-05-12 | 2008-10-22 | 上海市政工程设计研究院 | Wide pier with canopy beam |
| CN102787551A (en) * | 2012-07-16 | 2012-11-21 | 长沙理工大学 | Method for determining small bridge mixed continuous system structure in short pier prestressed concrete |
| CN102787551B (en) * | 2012-07-16 | 2014-04-30 | 长沙理工大学 | Method for determining small bridge mixed continuous system structure in short pier prestressed concrete |
| CN104727212A (en) * | 2015-02-27 | 2015-06-24 | 郑州大学 | Method for expressing two curved box girder bridge bending moment internal forces without considering supporting eccentric distance |
| CN107988857A (en) * | 2017-11-28 | 2018-05-04 | 中铁第四勘察设计院集团有限公司 | A kind of semifixed continuous beam of straddle-type monorail |
| CN107988857B (en) * | 2017-11-28 | 2023-08-25 | 中铁第四勘察设计院集团有限公司 | Straddle type monorail semi-fixed continuous beam |
| CN109505237A (en) * | 2018-11-20 | 2019-03-22 | 华汇工程设计集团股份有限公司 | Girder longitudinal connecting structure and construction method at a kind of steel reinforced concrete combined bridge expansion joint |
| CN109344552A (en) * | 2018-11-29 | 2019-02-15 | 中铁二院工程集团有限责任公司 | Suspension type monorail bridge pier and its design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |