CN105442460A - Anti-overturning strengthening method for single-column pier bridge - Google Patents

Anti-overturning strengthening method for single-column pier bridge Download PDF

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Publication number
CN105442460A
CN105442460A CN201510788676.6A CN201510788676A CN105442460A CN 105442460 A CN105442460 A CN 105442460A CN 201510788676 A CN201510788676 A CN 201510788676A CN 105442460 A CN105442460 A CN 105442460A
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CN
China
Prior art keywords
steel
pier
bridge
hoop
corbel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510788676.6A
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Chinese (zh)
Inventor
盛勇
李攀
韩鹏
唐术熙
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Municipal Engineering Design Insitute Group Co Ltd filed Critical Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority to CN201510788676.6A priority Critical patent/CN105442460A/en
Publication of CN105442460A publication Critical patent/CN105442460A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges

Abstract

The invention provides an anti-overturning strengthening method for a single-column pier bridge. The method comprises the following steps: pre-assembling a steel hoop and a steel corbel into an overall steel structure; lifting the overall steel structure formed by the steel hoop and the steel corbel to the top of a bridge pier upright column by using a lifting device; fixing the overall steel structure formed by the steel hoop and the steel corbel to the top of the bridge pier upright column; placing a plurality of intelligent supports on the steel corbel; enabling a bridge support and the intelligent supports at two sides to form a 'seesaw' structure; adjusting the heights of the intelligent supports to enable the upper surfaces of the intelligent supports to be tightly laminated with a bridge beam bottom and enable the lower surfaces of the intelligent supports to be tightly laminated with the steel corbel; and acquiring electric signals generated by piezoelectric ceramics in the intelligent supports in real time so as to judge whether the intelligent supports have the phenomena of disengagement and deflection. The anti-overturning strengthening method provided by the invention improves the anti-overturning performance of the single-column pier bridge and has relatively good construction convenience, relatively wide applicability and excellent economical efficiency.

Description

For the overturning or slip resistance analysis reinforcement means of Single column pier bridge
Technical field
The present invention relates to a kind of overturning or slip resistance analysis reinforcement means for Single column pier bridge.
Background technology
Current, the many employings of curve bridge only post Cast-in-Situ Continuous Beam form of structure such as China's city intersection, high speed ring road, the substructure form of this kind of bridge has minimizing occupation of land, the increase visual field and bridge advantage attractive in appearance.But China's load-carrying vehicle ubiquity overloading at present, individual vehicle overload even reaches 200% ~ 300%, causes the bridge of this kind of form of structure in use a lot of capsizing case to occur.
The bending resistance focusing on bridge that current bridge design person pays close attention to, shear resistant capacity aspect, the concern for the accidental overload effect of bias is not enough.Recent year Single column pier Continuous Box Girder Bridge capsizing case frequently occurs, and causes the self-examination of related personnel gradually.Trace it to its cause, most accident bridge pier column direction across bridge adopts single fulcrum support, under overloaded vehicle uneven loading action, the horizontal anti-overturning of structure is poor, especially the bridge floor of sharp radius curve only post ring road box girder bridge is narrow, conducts oneself with dignity little, and the ratio of vehicular load shared by Load Combination is great.Simultaneously because of the regulation that existing the standard of highway bridge is not correlated with for transverse overturning stability, be in space state, often can ignore again the bridge lateral Stability Numerical Analysis under eccentric accidentally overload effect during design, the structure under accidental action be used and brings hidden danger.
It is more complicated Mechanics Phenomenon that structure is toppled, and belongs to the category of bearing nonlinear analysis.Before structure is toppled, first will inevitably produce bearing bias voltage and even to come to nothing phenomenon.After seat empty, the bearing come to nothing loses the supporting role to structure, only remaining bearing remaining produces constraint to structure, this will inevitably cause the distribution again of end reaction, will inevitably occur in this process that such as bearing vertical pressure exceedes susceptor design intensity and causes support damage, the excessive caused girder slippage phenomenon of bearing corner distortion in process of toppling, therefore whether structure is toppled to lose efficacy with seat supports effect and is closely related.
Summary of the invention
The invention provides a kind of overturning or slip resistance analysis reinforcement means for Single column pier bridge, improve the overturning or slip resistance analysis performance of Single column pier bridge, there is convenience of constructing preferably, wider applicability and excellent economy.
In order to achieve the above object, the invention provides a kind of overturning or slip resistance analysis reinforcement means for Single column pier bridge, comprise following steps:
Step S1, by steel hoop and steel corbel pre-assembled integrated steel-structure;
Step S2, utilize lifting means by steel hoop and steel corbel composition integrated steel-structure be promoted to pier column top;
Step S3, by steel hoop and steel corbel composition integrated steel-structure be fixed on pier column top;
Step S4, be placed on steel corbel by some intelligent bearings, the intelligent bearing of bridge pad and both sides forms " seesaw " structure, regulates the height of intelligent bearing, and make to fit tightly at the bottom of its upper surface and Bridge Beam, soffit and steel corbel fit tightly;
The signal of telecommunication that in the intelligent bearing of step S5, Real-time Collection, piezoelectric ceramics produces, judges whether intelligent bearing occurs coming to nothing and conjugating.
Steel hoop and steel corbel pre-assembled integrated steel-structure are comprised:
The steel hoop welded together and steel corbel are transported to engineering site;
Utilize pier cap as work plane, two steel hoops are placed in the both sides of pier column respectively, the junction of two steel hoops contacts with each other, and some high-strength bolts is tentatively screwed into the junction of two steel hoops, makes two steel hoops form an overall steel hoop structure around bridge pier.
When the integrated steel-structure of steel hoop and steel corbel composition is promoted to pier column top, pier column top is provided with bridge pad.
Wherein, the integrated steel-structure that steel hoop and steel corbel form is fixed on pier column top to comprise:
Some anchor bolts are planted in the preformed hole position on steel hoop;
Tighten the force value of high-strength bolt to designing requirement at steel anchor ear connection place;
Tighten anchor bolt;
Structure glue is injected the gap between steel hoop and pier column.
Or, the integrated steel-structure that steel hoop and steel corbel form is fixed on pier column top and comprises:
Some sheet rubbers are set up between steel hoop and pier column;
Some anchor bolts are planted in the preformed hole position on steel hoop;
Tighten the force value of high-strength bolt to designing requirement at steel anchor ear connection place;
Tighten anchor bolt.
Intelligent bearing is in stable state, does not show and does not electrically produce the signal of telecommunication, if intelligent bearing pressurized, in compression process, electric discharge produces positive charge signal, if intelligent seat empty, in drawing process, charging produces negative electrical charge signal.
Invention increases the overturning or slip resistance analysis performance of Single column pier bridge, there is convenience of constructing preferably, wider applicability and excellent economy.
Accompanying drawing explanation
Fig. 1 is the structural representation of Single column pier bridge overturning or slip resistance analysis structure.
Fig. 2 be in Fig. 1 A-A to sectional view.
Fig. 3 is the structural representation of intelligent bearing.
Fig. 4 is the flow chart of the overturning or slip resistance analysis reinforced construction method for Single column pier bridge.
Detailed description of the invention
Following according to Fig. 1 ~ Fig. 4, illustrate preferred embodiment of the present invention.
As depicted in figs. 1 and 2, the invention provides a kind of Single column pier bridge overturning or slip resistance analysis structure, comprise:
Steel hoop structure, it is set on pier column 101, this steel hoop structure comprises the identical steel hoop 2 of two structures, and be arranged on the some to drawing high strength bolt 201 of junction 203 on steel hoop 2, with the some anchor bolts 202 be arranged on steel hoop 2 in preformed hole position, this makes steel hoop 2 be combined into an overall steel hoop structure to drawing high strength bolt 201, and this anchor bolt 202 fixes steel hoop mechanism and pier column 101;
Two steel corbels 1, it is welded to connect with two steel hoops 2 respectively;
Intelligent bearing 3, it is arranged at the bottom of steel corbel 1 and Bridge Beam between 104, and at the bottom of the upper surface of this intelligent bearing 3 and Bridge Beam, 104 fit tightly, and soffit and steel corbel 1 fit tightly;
As shown in Figure 3, described intelligent bearing 3 comprises: mounting assembly and to be arranged on below mounting assembly and be mechanically connected mounting assembly heighten assembly, this heightens the height that assembly regulates mounting assembly, precompression is applied to mounting assembly, thus to ensure at the bottom of the upper surface of intelligent bearing 3 and Bridge Beam that 104 fit tightly, soffit and steel corbel 1 fit tightly, and unlikely appearance comes to nothing;
Described mounting assembly comprises:
Support body 302;
Piezoelectric ceramics (not shown), it is inner that it is arranged on support body 302, and be electrically connected controller, this piezoelectric ceramics is not aobvious at steady state does not electrically produce the signal of telecommunication, and in compression process, electric discharge produces positive charge signal, and in drawing process, charging produces negative electrical charge signal, piezoelectric ceramics utilizes piezo-electric effect to produce the signal of telecommunication, and by electric signal transmission to controller, the signal of telecommunication that controller produces according to piezoelectric ceramics, judges whether intelligent bearing 3 occurs coming to nothing and conjugating;
Be arranged on the bearing top board 301 on support body 302 top;
And, be arranged on the base-plate 303 of support body 302 bottom;
Described assembly of heightening comprises:
Bearing 306, its one end is placed on steel corbel 1, and the other end is fixedly connected with base-plate 303;
Heighten gad 305, it contacts base-plate 303, and can move up and down along bearing 306;
Heighten part 304, gad 305 is heightened in its connection, makes to heighten gad 305 and moves up and down along bearing 306, thus drives mounting assembly to move up and down.
As shown in Figure 4, adopt Single column pier bridge overturning or slip resistance analysis structure provided by the invention for the overturning or slip resistance analysis reinforcement means of Single column pier bridge, comprise following steps:
Step S1, by steel hoop and steel corbel pre-assembled integrated steel-structure;
The steel hoop welded together and steel corbel are transported to engineering site;
Utilize pier cap (as shown in Figure 1) as work plane, two steel hoops are placed in the both sides of pier column respectively, the junction of two steel hoops contacts with each other, some high-strength bolts are tentatively screwed into the junction of two steel hoops, make two steel hoops form an overall steel hoop structure around bridge pier;
Step S2, utilize lifting means by steel hoop and steel corbel composition integrated steel-structure be promoted to pier column top, pier column top now has been provided with bridge pad (as shown in Figure 1);
Step S3, by steel hoop and steel corbel composition integrated steel-structure be fixed on pier column top;
Some anchor bolts are planted in the preformed hole position on steel hoop;
Tighten the force value of high-strength bolt to designing requirement at steel anchor ear connection place;
Tighten anchor bolt;
Structure glue is injected the gap between steel hoop and pier column;
The gap between steel hoop and pier column is filled up by note structure glue, make both closely connected, to provide powerful anchor ear power and bonding force, but owing to filling up gap between steel hoop and pier column by note structure glue, need more complicated operation and larger operating platform, for the engineering of circumstance complication residing for Single column pier, also can by setting up the sheet rubber of 3 ~ 5mm between steel hoop and pier column, both are fitted tightly, with the anchor ear power providing steel hoop powerful;
Step S4, be placed on steel corbel by some intelligent bearings, the intelligent bearing of bridge pad and both sides forms " seesaw " structure, regulates the height of intelligent bearing, and make to fit tightly at the bottom of its upper surface and Bridge Beam, soffit and steel corbel fit tightly;
In the present embodiment, suppose that the elemental height of intelligent bearing is 20cm, regulate the height of intelligent bearing, make to fit tightly at the bottom of its upper surface and Bridge Beam, soffit and steel corbel fit tightly, now intelligent bearing be highly compressed to 15cm, when the height of intelligent bearing maintains 15cm, intelligent bearing is in stable state, do not show and electrically do not produce the signal of telecommunication, if under overloaded vehicle uneven loading action, bridge beam body run-off the straight, according to seesaw principle, the intelligent bearing pressurized (larger than the pressure be subject to before in other words) of bridge pad side, height is compressed to 10cm from 15cm, in compression process, electric discharge produces positive charge signal, the intelligent seat empty of bridge pad opposite side (does not stress in other words, stressed less than original in other words), height is stretched to 20cm from 15cm, in drawing process, charging produces negative electrical charge signal,
The signal of telecommunication that in the intelligent bearing of step S5, Real-time Collection, piezoelectric ceramics produces, judges whether intelligent bearing occurs coming to nothing and conjugating.
The present invention has the following advantages:
1, by the anchor ear power of steel hoop, adhesion stress and anchor bolt, the integrated steel-structure that pier column and steel hoop and steel corbel form is connected as one;
2, mainly through anchor ear power, realize steel hoop and be connected with pier column with the integrated steel-structure that steel corbel forms, plastic simplicity, from heavy and light, the welding of steel work opening construction and late maintaining convenience, strong adaptability, easily to promote;
3, intelligent adjustable-height bearing is adopted, set up piezoelectric ceramics intellectual material in the holder, there is direct piezoelectric effect and reversed piezoelcetric effect, by online acquisition and patrol and examine the collection signal of telecommunication, implement to transmit data to mobile phone or computer terminal through cloud platform, judge whether intelligent bearing occurs coming to nothing, conjugating by data analysis.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.

Claims (6)

1., for an overturning or slip resistance analysis reinforcement means for Single column pier bridge, it is characterized in that, comprise following steps:
Step S1, by steel hoop and steel corbel pre-assembled integrated steel-structure;
Step S2, utilize lifting means by steel hoop and steel corbel composition integrated steel-structure be promoted to pier column top;
Step S3, by steel hoop and steel corbel composition integrated steel-structure be fixed on pier column top;
Step S4, be placed on steel corbel by some intelligent bearings, the intelligent bearing of bridge pad and both sides forms " seesaw " structure, regulates the height of intelligent bearing, and make to fit tightly at the bottom of its upper surface and Bridge Beam, soffit and steel corbel fit tightly;
The signal of telecommunication that in the intelligent bearing of step S5, Real-time Collection, piezoelectric ceramics produces, judges whether intelligent bearing occurs coming to nothing and conjugating.
2., as claimed in claim 1 for the overturning or slip resistance analysis reinforcement means of Single column pier bridge, it is characterized in that, steel hoop and steel corbel pre-assembled integrated steel-structure are comprised:
The steel hoop welded together and steel corbel are transported to engineering site;
Utilize pier cap as work plane, two steel hoops are placed in the both sides of pier column respectively, the junction of two steel hoops contacts with each other, and some high-strength bolts is tentatively screwed into the junction of two steel hoops, makes two steel hoops form an overall steel hoop structure around bridge pier.
3. as claimed in claim 1 for the overturning or slip resistance analysis reinforcement means of Single column pier bridge, it is characterized in that, when the integrated steel-structure of steel hoop and steel corbel composition is promoted to pier column top, pier column top is provided with bridge pad.
4. as claimed in claim 1 for the overturning or slip resistance analysis reinforcement means of Single column pier bridge, it is characterized in that, the integrated steel-structure that steel hoop and steel corbel form be fixed on pier column top and comprise:
Some anchor bolts are planted in the preformed hole position on steel hoop;
Tighten the force value of high-strength bolt to designing requirement at steel anchor ear connection place;
Tighten anchor bolt;
Structure glue is injected the gap between steel hoop and pier column.
5. as claimed in claim 1 for the overturning or slip resistance analysis reinforcement means of Single column pier bridge, it is characterized in that, the integrated steel-structure that steel hoop and steel corbel form be fixed on pier column top and comprise:
Some sheet rubbers are set up between steel hoop and pier column;
Some anchor bolts are planted in the preformed hole position on steel hoop;
Tighten the force value of high-strength bolt to designing requirement at steel anchor ear connection place;
Tighten anchor bolt.
6. as claimed in claim 1 for the overturning or slip resistance analysis reinforcement means of Single column pier bridge, it is characterized in that, intelligent bearing is in stable state, do not show and electrically do not produce the signal of telecommunication, if intelligent bearing pressurized, in compression process, electric discharge produces positive charge signal, if intelligent seat empty, in drawing process, charging produces negative electrical charge signal.
CN201510788676.6A 2015-11-17 2015-11-17 Anti-overturning strengthening method for single-column pier bridge Pending CN105442460A (en)

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Application Number Priority Date Filing Date Title
CN201510788676.6A CN105442460A (en) 2015-11-17 2015-11-17 Anti-overturning strengthening method for single-column pier bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510788676.6A CN105442460A (en) 2015-11-17 2015-11-17 Anti-overturning strengthening method for single-column pier bridge

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Publication Number Publication Date
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106436557A (en) * 2016-10-26 2017-02-22 上海市政工程设计研究总院(集团)有限公司 Method for improving overturning resistance of single-column pier bridge
CN109457629A (en) * 2018-12-07 2019-03-12 杭州江润科技有限公司 Single column pier ruggedized construction and construction method
CN109868726A (en) * 2019-04-01 2019-06-11 河南省交通规划设计研究院股份有限公司 A kind of prefabricated assembled cylindricality bridge pier and its construction method
CN110644379A (en) * 2019-09-19 2020-01-03 中铁大桥局第七工程有限公司 Reinforcing system and method for single-column pier bridge
CN112342896A (en) * 2020-10-28 2021-02-09 中铁桥隧技术有限公司 Anti-overturning structure of single-column pier bridge and construction method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011059072A1 (en) * 2009-11-12 2011-05-19 中部電力株式会社 Construction method for improving earthquake resistance of existing sluice gate pillars provided to dam, and earthquake-proof bridge for dam
CN103205927A (en) * 2013-04-18 2013-07-17 东北林业大学 Anti-overturning bridge pier supporting mechanism
CN103790105A (en) * 2014-01-23 2014-05-14 河海大学 Pot bearing and system for monitoring transverse overturn of bridge
CN204530444U (en) * 2014-09-28 2015-08-05 陈逵 A kind of rubber tension and compression intelligent force-measuring supporting seat
CN204551248U (en) * 2015-03-17 2015-08-12 长安大学 A kind of bridge plate-type bearing overturning or slip resistance analysis prior-warning device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011059072A1 (en) * 2009-11-12 2011-05-19 中部電力株式会社 Construction method for improving earthquake resistance of existing sluice gate pillars provided to dam, and earthquake-proof bridge for dam
CN103205927A (en) * 2013-04-18 2013-07-17 东北林业大学 Anti-overturning bridge pier supporting mechanism
CN103790105A (en) * 2014-01-23 2014-05-14 河海大学 Pot bearing and system for monitoring transverse overturn of bridge
CN204530444U (en) * 2014-09-28 2015-08-05 陈逵 A kind of rubber tension and compression intelligent force-measuring supporting seat
CN204551248U (en) * 2015-03-17 2015-08-12 长安大学 A kind of bridge plate-type bearing overturning or slip resistance analysis prior-warning device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106436557A (en) * 2016-10-26 2017-02-22 上海市政工程设计研究总院(集团)有限公司 Method for improving overturning resistance of single-column pier bridge
CN106436557B (en) * 2016-10-26 2023-12-01 上海市政工程设计研究总院(集团)有限公司 Method for improving anti-overturning performance of single-pier bridge
CN109457629A (en) * 2018-12-07 2019-03-12 杭州江润科技有限公司 Single column pier ruggedized construction and construction method
CN109868726A (en) * 2019-04-01 2019-06-11 河南省交通规划设计研究院股份有限公司 A kind of prefabricated assembled cylindricality bridge pier and its construction method
CN110644379A (en) * 2019-09-19 2020-01-03 中铁大桥局第七工程有限公司 Reinforcing system and method for single-column pier bridge
CN112342896A (en) * 2020-10-28 2021-02-09 中铁桥隧技术有限公司 Anti-overturning structure of single-column pier bridge and construction method thereof

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Application publication date: 20160330