CN103952970A - Oversized pier-position pull rod and foundation structure - Google Patents
Oversized pier-position pull rod and foundation structure Download PDFInfo
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- CN103952970A CN103952970A CN201410151773.XA CN201410151773A CN103952970A CN 103952970 A CN103952970 A CN 103952970A CN 201410151773 A CN201410151773 A CN 201410151773A CN 103952970 A CN103952970 A CN 103952970A
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- pull bar
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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 foundation structure.
Background technology
In bridge construction, arch bridge, as one of the most basic structural system, has unique glamour.In modern arch bridge, fly the favor that swallow arch is received people more and more.Be subject to landform, neighboring buildings conditioned disjunction to build demand attractive in appearance, fly the general main span of swallow arch bridge very large, end bay is relatively little, to reach good architectural effect.This makes arranging across footpath of arch bridge out of proportion, and negative reaction easily appears in end bay buttress place.At abutment pier, occur that negative reaction is that bridge design is reluctant.At end bay, occur negative reaction, if adopt stretching resistance bearing scheme, due to the design period much smaller than bridge bearing service life, with the replacing of rear support, be difficult to again realize, pulling force bearing is not a kind of good solution.At end bay, occur negative reaction, the conventional form of ballast that adopts solves, but because end bay is relatively short, deck-molding is limited, and under least favorable load case, ballast is difficult to solve the problem of end bay negative reaction.
Summary of the invention
The object of the present invention is to provide a kind of super large pier position pull bar and foundation structure, can overcome above-mentioned the deficiencies in the prior art, this super large pier position pull bar and foundation structure have solved the problem of abutment pier negative reaction, reduced simultaneously end bay across footpath, reduced the bending and shearing of end bay.The present invention is by arch bridge end bay place, powerful pull bar being set, and under pull bar, cushion cap and pile foundation is set, and forms powerful tension system, solved the technical problem that flies swallow arch bridge abutment pier negative reaction.The present invention reduced end bay across footpath, reduced the bending and shearing of end bay, reduced the design difficulty of end bay, reduce end bay girder construction costs.Super large pier position pull bar arranges that at direction across bridge pressing bridge overall with arranges, makes bridge more powerful in direction across bridge constraint, has changed the distribution of bridge static mode, has delayed the appearance of torsion mode.
Super large pier position pull bar provided by the invention and foundation structure mainly comprise pull bar, upper hanger, pin, pull bar, lower hanger, pin, bottom foundation platform and pile foundation.Upper hanger is connected with girder, and lower hanger is connected with bottom cushion cap, under cushion cap, pile foundation is set, and pull bar couples together the top and the bottom of bridge by pin.
The vertical counter-force of super large pier position pull bar provided by the invention and the direct balance end bay of foundation structure, has avoided the appearance of abutment pier negative reaction.Abutment pier bearing becomes general resistance to compression bearing from mode tensile supporting seat, facilitates later bearing replacement, and reduces time and the expense of changing bearing, and resistance to compression bearing is compared with mode tensile supporting seat in addition, and cost and application life all will get well.By super large pier position pull bar and basis, reduced end bay across footpath, reduced the bending and shearing of end bay, reduced the design difficulty of end bay, reduce end bay girder construction costs.Super large pier position pull bar arranges that at direction across bridge pressing bridge overall with arranges, makes bridge more powerful in direction across bridge constraint, has changed the distribution of bridge static mode, has delayed the appearance of torsion mode.
Accompanying drawing explanation
Fig. 1 is integral bridge structural representation of the present invention.
Fig. 2 is each position connection diagram of the present invention.
Fig. 3 is pull bar of the present invention.
Fig. 4 is upper hanger of the present invention.
Fig. 5 is lower hanger of the present invention.
Fig. 6 is pin of the present invention.
Fig. 7 is bottom of the present invention foundation platform.
The specific embodiment
The present invention is described in detail as follows with reference to accompanying drawing, it should be noted that the accessory using in the present invention do not indicate especially in situation and be commercially available prod.Do not have the structure indicating all to adopt known element structure and manufactured materials.The present embodiment is descriptive, is not determinate, can not limit thus 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, bottom foundation platform, 8, abutment pier bearing (tension/resistance to compression).
Super large pier position pull bar provided by the invention and foundation structure mainly comprise: main arch 1, girder 2, pull bar 3, upper hanger 4, lower hanger 5, pin 6, cushion cap 7.
As shown in Figure 1, a kind of super large pier position Tiebar structure is set between the reverse diagonal brace of end bay span centre and abutment pier, in order to reduce end bay internal force, realizes the balance of bridge construction on support reaction, increase bridge in the constraint of direction across bridge simultaneously, realize the lateral stability of bridge construction.
As shown in Figure 2 be a kind of super large pier position Tiebar structure, comprise pull bar 3, upper hanger 4, lower hanger 5, pin 6, bottom foundation platform 7.Upper hanger 4 is connected with girder 1, and lower hanger 5 is connected with bottom foundation platform 7, and cushion cap arranges pile foundation 7 times, and pull bar 3 couples together the top and the bottom of bridge by pin 6.
Super large pier position pull bar provided by the invention and hanger need to machine by design drawing and universal method in steel work processing factory, are transported to job site.Because pull bar need to bear the pulling force that bridge design load produces, the installation of pull bar was installed before girder and main arch carrying.First be the construction on basis, main bridge bottom, comprise pull bar basis, and hanger built-in fitting under pull bar is installed.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 has welded in engineering in advance, the girder of constructing in order, and pull bar and main arch are installed.After all bridge members install, from main span span centre, sequentially tear frame open, make pull bar progressively bear bridge load.
The invention provides a kind of super large pier position pull bar and foundation structure, comprise on pull bar, pull bar hanger under hanger, pull bar, pull bar crossbeam, stiffening rib and pull bar basis; Upper hanger is connected with girder, and lower hanger is connected with bottom cushion cap, under cushion cap, pile foundation is set, and pull bar connects the top and the bottom of bridge by pin.
The present invention is by arch bridge end bay place, pull bar and basis being set, and directly the vertical counter-force of balance end bay, has avoided the appearance of abutment pier negative reaction.Abutment pier bearing becomes general resistance to compression bearing from mode tensile supporting seat, facilitates later bearing replacement, and reduces time and the expense of changing bearing, and resistance to compression bearing is compared with mode tensile supporting seat in addition, and cost and application life all will get well.By super large pier position pull bar and basis, reduced end bay across footpath, reduced the bending and shearing of end bay, reduced the design difficulty of end bay, reduce end bay girder construction costs.Super large pier position pull bar arranges that at direction across bridge pressing bridge overall with arranges, makes bridge more powerful in direction across bridge constraint, has changed the distribution of bridge static mode, has delayed the appearance of torsion mode.
Claims (1)
1. large pier position pull bar and a foundation structure, is characterized in that it mainly comprises pull bar, upper hanger, pin, pull bar, lower hanger, pin, bottom foundation platform and pile foundation; Upper hanger is connected with girder, and lower hanger is connected with bottom cushion cap, under cushion cap, pile foundation is set, and pull bar connects the top and the bottom of bridge 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 true CN103952970A (en) | 2014-07-30 |
| CN103952970B CN103952970B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410151773.XA Active CN103952970B (en) | 2014-04-16 | 2014-04-16 | Oversized pier-position pull rod and foundation structure |
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| CN (1) | CN103952970B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120658A (en) * | 2014-08-01 | 2014-10-29 | 武船重型工程股份有限公司 | Machining method of space warping bridge and space 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 |
| CN113605232A (en) * | 2021-08-03 | 2021-11-05 | 中铁大桥勘测设计院集团有限公司 | Inhaul cable weight structure and design method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2040245C3 (en) * | 1970-08-13 | 1979-04-12 | Industriewerk Schaeffler Ohg, 8522 Herzogenaurach | Device for centering the pins of a universal joint in the fork eyes of the fork arms of a cardan shaft |
| DE2556769B1 (en) * | 1975-12-17 | 1976-12-23 | Loehr & Bromkamp Gmbh | SEAL FOR SEALING 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 |
| CN103132462B (en) * | 2013-03-08 | 2015-06-24 | 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 |
| CN103614966B (en) * | 2013-11-21 | 2015-08-12 | 中交第二航务工程局有限公司 | Suspension bridge steel box-girder hoisting appliance |
| 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
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120658A (en) * | 2014-08-01 | 2014-10-29 | 武船重型工程股份有限公司 | Machining method of space warping bridge and space warping bridge |
| 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 |
| CN113605232A (en) * | 2021-08-03 | 2021-11-05 | 中铁大桥勘测设计院集团有限公司 | Inhaul cable weight structure and design method |
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| Publication number | Publication date |
|---|---|
| CN103952970B (en) | 2017-02-01 |
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