CN103952970B - Oversized pier-position pull rod and foundation structure - Google Patents
Oversized pier-position pull rod and foundation structure Download PDFInfo
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- CN103952970B CN103952970B CN201410151773.XA CN201410151773A CN103952970B CN 103952970 B CN103952970 B CN 103952970B CN 201410151773 A CN201410151773 A CN 201410151773A CN 103952970 B CN103952970 B CN 103952970B
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- bridge
- pull rod
- pull bar
- pier
- side span
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Abstract
The invention relates to an oversized pier-position pull rod and foundation structure, comprising a pull rod, a pull rod upper lifting lug, a pull rod lower lifting lug, a pull rod cross beam, a reinforcing rib and a pull rod foundation, wherein the upper lifting lug is connected with a main beam, the lower lifting lug is connected with a lower bearing platform, a pile foundation is arranged below the lower bearing platform, and the pull rod is connected with the upper part and the lower part of a bridge through dowels. The pull rod and the foundation are arranged at a side span of an arch bridge, so that vertical counter forces of the side span are directly balanced, and the negative counter forces of abutment piers are avoided. An abutment pier support is changed into a common compression support from a tensile support, so that subsequent support replacement is facilitated, and the time and the expense for replacing the support are reduced. Through adopting the oversized pier-position pull rod and foundation structure, the span of the side span is reduced, the bending moment and the shearing force of the side span are lowered, the design difficulty of the side span is lowered, and the engineering cost of the side span and the main beam is reduced. The oversized pier-position pull rod is arranged in the transverse direction of the bridge according to the overall width of the bridge, so that the restriction force of the bridge in the transverse direction of the bridge is stronger, the distribution of a natural vibration mode of the bridge is changed, and the occurrence of a torsional mode is retarded.
Description
Technical field
The present invention relates to a kind of super large pier position pull bar and base structure.
Background technology
In bridge construction, arch bridge, as one of most basic structural system, has the glamour of uniqueness.In modern arch bridge
In, winged swallow arch receives the favor of people more and more.By landform, neighboring buildings condition or building demand attractive in appearance, winged swallow arch
The general main span of bridge is very big, and end bay is relatively small, to reach good architectural effect.This makes the span setting ratio of arch bridge lose
Adjust, negative reaction easily occurs at end bay buttress.Negative reaction in abutment pier is that Bridge Design is reluctant.Occur negative in end bay
Counter-force, if adopting stretching resistance bearing scheme, because bearing service life is much smaller than the design period of bridge, with rear support more
Change and be difficult to realize, pulling force bearing is not a kind of good solution.In end bay, negative reaction occurs, routine is using ballast
Form is solving, but because end bay is relatively short, deck-molding is limited, and under least favorable load case, ballast is difficult to solve end bay
The problem of negative reaction.
Content of the invention
It is an object of the invention to provide a kind of super large pier position pull bar and base structure, above-mentioned prior art can be overcome
Deficiency, this super large pier position pull bar and base structure solve the problems, such as abutment pier negative reaction, reduce the across footpath of end bay simultaneously, reduce
The moment of flexure of end bay and shearing.The present invention passes through to arrange powerful pull bar at arch bridge end bay, and under pull bar setting cushion cap and
Pile foundation, forms powerful tension system, solves the technical problem of winged swallow arch bridge abutment pier negative reaction.Present invention reduces end bay
Across footpath, reduce moment of flexure and the shearing of end bay, reduce the design difficulty of end bay, reduce end bay girder construction costs.Super large
Pier position pull bar presses bridge overall with arrangement so that bridge is more powerful in direction across bridge constraint in direction across bridge arrangement, changes bridge certainly
The distribution of mode of shaking, has delayed the appearance of torsion mode.
The present invention provide super large pier position pull bar and base structure mainly include pull bar, upper hanger, pin, pull bar, under hang
Ear, pin, infrastructure cushion cap and pile foundation.Upper hanger is connected with girder, and lower hanger is connected with bottom cushion cap, arranges stake under cushion cap
Base, the top and the bottom of bridge are coupled together by pull bar by pin.
The super large pier position pull bar that the present invention provides and base structure directly balances the vertical counter-force of end bay, it is to avoid abutment pier is born
The appearance of counter-force.Abutment pier bearing is changed into general resistance to compression bearing from mode tensile supporting seat, facilitates later bearing replacement, and reduces replacing
The time of bearing and expense, in addition resistance to compression bearing compared with mode tensile supporting seat, will get well by cost and service life.By super large pier position
Pull bar and basis, reduce the across footpath of end bay, reduce moment of flexure and the shearing of end bay, reduce the design difficulty of end bay, reduce
End bay girder construction costs.Super large pier position pull bar presses bridge overall with arrangement so that bridge constrains in direction across bridge in direction across bridge arrangement
More powerful, change the distribution of bridge static mode, delay the appearance of torsion mode.
Brief description
Fig. 1 is the bridge overall structure diagram of the present invention.
Fig. 2 is each position connection diagram of the present invention.
Fig. 3 is the pull bar of the present invention.
Fig. 4 is the upper hanger of the present invention.
Fig. 5 is the lower hanger of the present invention.
Fig. 6 is the pin of the present invention.
Fig. 7 is the infrastructure cushion cap of the present invention.
Specific embodiment
The present invention is explained in detail with reference to the accompanying drawings as follows, it should be noted that accessory is not especially indicated used in the present invention
In the case of be commercially available prod.There is no the structure indicating all using known element structure and manufacture material.The present embodiment is description
Property, it is not determinate it is impossible to thus limit protection scope of the present invention.
As shown in the figure: 1, main arch, 2, girder, 3, pull bar, 4, upper hanger, 5, lower hanger, 6, pin, 7, infrastructure holds
Platform, 8, abutment pier bearing (tension/resistance to compression).
The present invention provide super large pier position pull bar and base structure specifically include that main arch 1, girder 2, pull bar 3, upper hanger 4,
Lower hanger 5, pin 6, cushion cap 7.
As shown in figure 1, arranging a kind of super large pier position Tiebar structure between the reverse diagonal brace of end bay span centre and abutment pier, in order to drop
Low end bay internal force, realizes balance on support reaction for the bridge structure, increases the constraint in direction across bridge for the bridge simultaneously, realizes bridge knot
The lateral stability of structure.
As shown in Fig. 2 a kind of super large pier position Tiebar structure, including pull bar 3, upper hanger 4, lower hanger 5, pin 6, under
Portion's foundation platform 7.Upper hanger 4 is connected with girder 1, and lower hanger 5 is connected with infrastructure cushion cap 7,7 times setting pile foundations of cushion cap, draws
The top and the bottom of bridge are coupled together by bar 3 by pin 6.
The super large pier position pull bar that the present invention provides and hanger need to press design drawing and universal method in steel construction processing factory
Machine, transport job site.Because pull bar needs to bear the pulling force of Bridge Design load generation, the installation of pull bar be
Install before girder and main arch carrying.It is the construction of main bridge infrastructure first, including pull bar basis, and install and hang under pull bar
Ear built-in fitting.Set up main arch and girder full framing, the gravity load of bridge should be born by support.The upper hanger of pull bar top girder
Complete in engineering welding in advance, girder of constructing in order, and pull bar and main arch are installed.After all bridge members install, from
Main span span centre order tears frame open so that pull bar progressively bears bridge load.
The invention provides a kind of super large pier position pull bar and base structure, hang including under hanger on pull bar, pull bar, pull bar
Ear, pull bar crossbeam, ribbed stiffener and pull bar basis；Upper hanger is connected with girder, and lower hanger is connected with bottom cushion cap, arranges under cushion cap
Pile foundation, pull bar passes through pin and connects the top and the bottom of bridge.
The present invention passes through setting pull bar and basis at arch bridge end bay, directly the vertical counter-force of balance end bay, it is to avoid side
The appearance of pier negative reaction.Abutment pier bearing is changed into general resistance to compression bearing from mode tensile supporting seat, facilitates later bearing replacement, and reduces
The time of replacing time and expense, in addition resistance to compression bearing compared with mode tensile supporting seat, will get well by cost and service life.By super large
Pier position pull bar and basis, reduce the across footpath of end bay, reduce moment of flexure and the shearing of end bay, reduce the design difficulty of end bay,
Reduce end bay girder construction costs.Super large pier position pull bar is pressed bridge overall with direction across bridge arrangement and is arranged so that bridge is in direction across bridge
Constraint is more powerful, changes the distribution of bridge static mode, has delayed the appearance of torsion mode.
Claims (1)
1. a kind of super large pier position pull bar and base structure, specifically include that main arch, girder, pull bar, upper hanger, lower hanger, pin,
Cushion cap；A kind of super large pier position Tiebar structure is set between the reverse diagonal brace of end bay span centre and abutment pier；Described super large pier position pull bar knot
Structure is made up of pull bar, upper hanger, lower hanger, pin, infrastructure cushion cap；Upper hanger is connected with girder, lower hanger and bottom base
Plinth cushion cap is connected, and arranges pile foundation under cushion cap, and the top and the bottom of bridge are coupled together by pull bar by pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151773.XA CN103952970B (en) | 2014-04-16 | 2014-04-16 | Oversized pier-position pull rod and foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151773.XA CN103952970B (en) | 2014-04-16 | 2014-04-16 | Oversized pier-position pull rod and foundation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103952970A CN103952970A (en) | 2014-07-30 |
| CN103952970B true CN103952970B (en) | 2017-02-01 |
Family
ID=51330307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410151773.XA Active CN103952970B (en) | 2014-04-16 | 2014-04-16 | Oversized pier-position pull rod and foundation structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN103952970B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120658B (en) * | 2014-08-01 | 2016-04-13 | 武船重型工程股份有限公司 | A kind of spatial warping bridge processing method and spatial warping bridge |
| CN106065562A (en) * | 2016-07-06 | 2016-11-02 | 中铁二院工程集团有限责任公司 | Bridge rigid pulling force is put |
| CN113605232B (en) * | 2021-08-03 | 2023-06-16 | 中铁大桥勘测设计院集团有限公司 | Inhaul cable pressing reconstruction and design method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1363498A (en) * | 1970-08-13 | 1974-08-14 | Schaeffler W | Device for and method of assembling universal joints |
| US4094517A (en) * | 1975-12-17 | 1978-06-13 | Lohr & Bromkamp Gmbh | Seal for a universal joint |
| CN201151874Y (en) * | 2008-01-22 | 2008-11-19 | 中交第二公路勘察设计研究院有限公司 | Rope-suspension bridge suspending rod type support device |
| CN103132462A (en) * | 2013-03-08 | 2013-06-05 | 中国建筑第六工程局有限公司 | Combination tool for controlling down-warping of components and installation and usage method of combination tool |
| CN103614966A (en) * | 2013-11-21 | 2014-03-05 | 中交第二航务工程局有限公司 | Suspension bridge steel box beam hoisting sling |
| CN204112210U (en) * | 2014-04-16 | 2015-01-21 | 天津城建设计院有限公司 | Super large pier position pull bar and foundation structure |
-
2014
- 2014-04-16 CN CN201410151773.XA patent/CN103952970B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1363498A (en) * | 1970-08-13 | 1974-08-14 | Schaeffler W | Device for and method of assembling universal joints |
| US4094517A (en) * | 1975-12-17 | 1978-06-13 | Lohr & Bromkamp Gmbh | Seal for a universal joint |
| CN201151874Y (en) * | 2008-01-22 | 2008-11-19 | 中交第二公路勘察设计研究院有限公司 | Rope-suspension bridge suspending rod type support device |
| CN103132462A (en) * | 2013-03-08 | 2013-06-05 | 中国建筑第六工程局有限公司 | Combination tool for controlling down-warping of components and installation and usage method of combination tool |
| CN103614966A (en) * | 2013-11-21 | 2014-03-05 | 中交第二航务工程局有限公司 | Suspension bridge steel box beam hoisting sling |
| CN204112210U (en) * | 2014-04-16 | 2015-01-21 | 天津城建设计院有限公司 | Super large pier position pull bar and foundation structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103952970A (en) | 2014-07-30 |
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