CN102704405A - Method utilizing buckle cable and anchor cable for balancing extra horizontal force - Google Patents

Method utilizing buckle cable and anchor cable for balancing extra horizontal force Download PDF

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Publication number
CN102704405A
CN102704405A CN2012102079803A CN201210207980A CN102704405A CN 102704405 A CN102704405 A CN 102704405A CN 2012102079803 A CN2012102079803 A CN 2012102079803A CN 201210207980 A CN201210207980 A CN 201210207980A CN 102704405 A CN102704405 A CN 102704405A
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CN
China
Prior art keywords
anchor
cable
knotted rope
anchor cable
level power
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Application number
CN2012102079803A
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Chinese (zh)
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CN102704405B (en
Inventor
涂满明
王令侠
李军堂
汪芳进
许佳平
王东辉
王超英
张静
娄松
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中铁大桥局集团有限公司
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Priority to CN201210207980.3A priority Critical patent/CN102704405B/en
Publication of CN102704405A publication Critical patent/CN102704405A/en
Application granted granted Critical
Publication of CN102704405B publication Critical patent/CN102704405B/en

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Abstract

The invention relates to a method utilizing a buckle cable and an anchor cable for balancing extra horizontal force. The deflecting pulley of the hoisting rope generating the extra horizontal force is connected with the anchorage beam anchored with the buckle cable and the anchor cable, and a sliding plate with extremely small friction coefficient is placed between the contact surface of the anchorage beam and a buckle cable tower. When extra horizontal force acts, the anchorage beam freely moves relative to the buckle cable tower along the direction of the horizontal force, so as to automatically increase and reduce the cable forces of the buckle cable and the anchor cable and generate the reverse unbalanced horizontal force to offset the extra horizontal force, so as to basically remove the influence of the extra horizontal force on the buckle cable tower; and when the extra horizontal force disappears, the anchorage beam moves back to the original position, the buckle cable and the anchor cable are automatically restored to the original cable forces, as a result the influence on the linear shape of the arch section is avoided. The method has simple structure, is clear in stress, convenient to use, economical and practical, and greatly reduces the material consumption added for the buckle cable tower to bear the extra horizontal force.

Description

A kind of method of utilizing button, anchor cable balance extra level power
Technical field
The present invention relates to the bridge engineering field, is a kind of method of utilizing button, anchor cable balance extra level power specifically.Especially refer to utilize the method for button, anchor cable (referring to knotted rope and anchor cable) balance knotted rope pylon extra level power in the arch bridge cantilever button extension method work progress.
Background technology
Increasing along with China railways, expressway construction project, long-span arch bridge is also more and more.The construction of arch bridge cantilever button extension method is the most frequently used job practices of Large Span Structure of Arch bridge construction; When adopting the method to construct; Usually the lower end of knotted rope and anchor cable is anchored at buckleing a little of arch section front end and anchorage place, back respectively, and the upper end of knotted rope and anchor cable is anchored at the anchor beam two ends on the knotted rope pylon.Adopt bolt to be connected between anchor beam and the knotted rope pylon or weld.
In work progress; Often because lifting need be provided with structures such as hoisting line angle pulley on the knotted rope pylon; Can produce extra horizontal force by make-up Sarasota frame; This extra horizontal force can produce bigger extra moment of flexure and displacement by make-up Sarasota frame, needs extra material usage to bear this horizontal force, causes the waste of knotted rope pylon structure.
Summary of the invention
To the defective that exists in the prior art, the object of the present invention is to provide a kind of method of utilizing button, anchor cable balance extra level power, only on structural configuration, existing button, anchorage cable stretching anchor system are carried out less transformation; Just can eliminate the influence of extra level power make-up Sarasota frame basically; Simple in structure, stressed clear and definite, easy to use; Economical and practical, can significantly reduce the material usage that the knotted rope pylon increases in order to bear extra level power.
For reaching above purpose, the technical scheme that the present invention takes is:
A kind of method of utilizing button, anchor cable balance extra level power is characterized in that, may further comprise the steps:
Step 1, vertical bridge is to being provided with anchor beam 1-1 on button Tata frame 7, and pad slide plate 1-2 between anchor beam 1-1 and knotted rope pylon 7 contact surfaces, slide plate 1-2 are the minimum material of friction factor;
Step 2 is connected angle pulley 9 with anchor beam 1-1 through junction plate 10 towards a side of anchor cable 4, angle pulley 9 is provided with the hoisting line 8 that produces extra level power 6;
Step 3 is provided with anchor beam direction across bridge stopping means 1-3 on knotted rope pylon 7, and vertical bridge is set to limited block 1-4 in anchor beam 1-1 bottom;
Step 4 before 6 effects of extra level power, is hung the method job practices according to the arch bridge cantilever button of routine; One end of knotted rope 3 is anchored on the arch section 2; One end of anchor cable 4 is anchored on the anchorage 5 of back, and the other end of knotted rope 3 and anchor cable 4 then is anchored at the anchor beam 1-1 two ends on the knotted rope pylon respectively, and stretch-draw is to design Suo Li; The horizontal component that guarantees button, anchor cable equates, adjusts the linear of arch section 2 simultaneously;
When extra level power 6 is done the time spent; Anchor beam 1-1 can break away moving to anchor cable 4, and the horizontal component that makes anchor beam 1-1 go up knotted rope 3 increases, and anchor cable 4 horizontal components reduce; Finally make the knotted rope 3 and the horizontal component difference of anchor cable 4 equal extra level power 6, thereby balance out extra level power 6;
After extra level power 6 is removed; Because it is bigger than the horizontal component of anchor cable 4 that anchor beam 1-1 goes up the horizontal component of knotted rope 3, total horizontal force that anchor beam 1-1 bears is towards knotted rope 3, thereby anchor beam 1-1 can break away moving towards knotted rope 3; The horizontal component that anchor beam 1-1 goes up knotted rope 3 in the sliding process reduces, the horizontal component of anchor cable 4 increases; Until getting back to original position, the horizontal component of knotted rope 3 and anchor cable 4 is balance once more, and anchor beam 1-1 just stops to slide; This moment, the Suo Li of knotted rope 3 also returned to Yuan Suoli, thereby the linear of arch section 2 also restored to the original state.
On the basis of technique scheme, the material of slide plate 1-2 is corrosion resistant plate or polyfluortetraethylene plate.
On the basis of technique scheme, said junction plate 10 is the steel plates in expense hole, two two ends, is articulated in through bearing pin on the web of anchor beam 1-1.
The method of utilization button of the present invention, anchor cable balance extra level power; Only on structural configuration, existing button, anchorage cable stretching anchor system are carried out less transformation, just can eliminate the influence of extra level power make-up Sarasota frame basically, simple in structure; Stressed clear and definite; Easy to use, economical and practical, can significantly reduce the material usage that the knotted rope pylon increases in order to bear extra level power.
Description of drawings
The present invention has following accompanying drawing:
The general arrangement of Fig. 1 embodiment of the invention,
The partial enlarged drawing of A part among Fig. 2 Fig. 1,
The partial enlarged drawing of A part among Fig. 1 under Fig. 3 extra level power effect state,
The left view of Fig. 4 Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further explain.
Shown in Fig. 1~4; The method of utilization button of the present invention, anchor cable balance extra level power; The angle pulley of the hoisting line that produces extra level power is connected on the anchor beam of anchoring knotted rope, anchor cable, and between the contact surface of said anchor beam and knotted rope pylon the minimum slide plate of pad friction factor.The extra level masterpiece time spent is arranged; Said anchor beam can move freely with respect to the knotted rope pylon along the direction of extra level power; The Suo Li of knotted rope, anchor cable is increased automatically, reduce; Produce reverse uneven horizontal force and offset above-mentioned extra level power, thereby eliminate the influence of extra level power make-up Sarasota frame basically; When extra level power disappeared, said anchor beam can be got back to original position automatically, and knotted rope, anchor cable also can return to initial Suo Li automatically, can linear the exerting an influence of arch section specifically, do not may further comprise the steps:
Step 1, vertical bridge is to being provided with anchor beam 1-1 on button Tata frame 7, and pad slide plate 1-2 between anchor beam 1-1 and knotted rope pylon 7 contact surfaces, slide plate 1-2 are the minimum material of friction factor, for example can be corrosion resistant plate, polyfluortetraethylene plate etc.;
Step 2; Angle pulley 9 is connected towards a side of anchor cable 4 with anchor beam 1-1 through junction plate 10; Angle pulley 9 is provided with the hoisting line 8 that produces extra level power 6, and said junction plate 10 is the steel plates in expense hole, two two ends, is articulated in through bearing pin on the web of anchor beam 1-1;
Step 3 is provided with anchor beam direction across bridge stopping means 1-3 on knotted rope pylon 7, and vertical bridge is set to limited block 1-4 in anchor beam 1-1 bottom;
Step 4; Before extra level power 6 effect, hang the method job practices according to the arch bridge cantilever button of routine, the end (lower end) of knotted rope 3 is anchored on the arch section 2; One end (lower end) of anchor cable 4 is anchored on the anchorage 5 of back; The other end (upper end) of at least one group of knotted rope 3 and anchor cable 4 then is anchored at anchor beam 1-1 two ends on the knotted rope pylon (the arch bridge cantilever is buckled to hang needs many group knotted ropes 3 and anchor cables 4 in the work progress, this method needs to utilize at least wherein one group of knotted rope 3 and anchor cable 4) respectively, and stretch-draw is to design Suo Li; The horizontal component that guarantees button, anchor cable equates, adjusts the linear of arch section 2 simultaneously;
When extra level power 6 is done the time spent; Anchor beam 1-1 can break away moving to anchor cable 4, and the horizontal component that makes anchor beam 1-1 go up knotted rope 3 increases, and anchor cable 4 horizontal components reduce; Finally make the knotted rope 3 and the horizontal component difference of anchor cable 4 equal extra level power 6, thereby balance out extra level power 6;
The Suo Li that knotted rope 3 increases mainly passes to the bigger arch section 2 of rigidity, and reducing of anchor cable 4 Suo Li is only influential to back anchorage 5, and knotted rope pylon 7 can not bear extra level power basically in this process;
After extra level power 6 is removed; Because it is bigger than the horizontal component of anchor cable 4 that anchor beam 1-1 goes up the horizontal component of knotted rope 3, total horizontal force that anchor beam 1-1 bears is towards knotted rope 3, thereby anchor beam 1-1 can break away moving towards knotted rope 3; The horizontal component that anchor beam 1-1 goes up knotted rope 3 in the sliding process reduces, the horizontal component of anchor cable 4 increases; Until getting back to original position, the horizontal component of knotted rope 3 and anchor cable 4 is balance once more, and anchor beam 1-1 just stops to slide; This moment, the Suo Li of knotted rope 3 also returned to Yuan Suoli, thereby the linear of arch section 2 also restored to the original state.
Adopt the method for the invention; At work progresss such as liftings arranged the extra level masterpiece time spent, anchor beam can move freely with respect to the knotted rope pylon along the extra level force direction, the Suo Li of button, anchor cable is increased automatically, reduce; Produce reverse uneven horizontal force and offset above-mentioned extra level power; The Suo Li that knotted rope increases has mainly passed to the bigger arch section of rigidity, and the Suo Li that anchor cable reduces is only influential to the rear anchorage, thereby has reduced the influence of extra level power make-up Sarasota frame greatly.
Work progresss such as lifting finish, when extra level power disappears, and said anchor beam meeting self-return, button, anchor cable also can return to initial Suo Li automatically, can be to linear not the exerting an influence of arch section.
Between knotted rope pylon 7 and anchor beam 1-1 contact surface, adopt slide plate 1-2 pad; Be in order to reduce the friction factor between anchor beam 1-1 and the knotted rope pylon 7; Thereby make that under the effect of extra level power 6 anchor beam 1-1 can indulge bridge to being free to slide, make horizontal force not pass to knotted rope pylon 7.
Anchor beam direction across bridge stopping means 1-3 is set on knotted rope pylon 7, is for the direction across bridge that limits anchor beam 1-1 moves, and is equivalent to the cross spacing device of anchor beam, to guarantee its lateral stability.
Vertical bridge being set to limited block 1-4 in anchor beam 1-1 bottom, is to vertically move in allowed limits in order to ensure anchor beam, prevents that anchor beam 1-1 from coming off from knotted rope pylon 7 to slip because of excessive vertical bridge.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.The content of not doing in this manual to describe in detail belongs to this area professional and technical personnel's known prior art.
The content of not doing in this manual to describe in detail belongs to this area professional and technical personnel's known prior art.

Claims (3)

1. a method of utilizing button, anchor cable balance extra level power is characterized in that, may further comprise the steps:
Step 1 goes up vertical bridge to anchor beam (1-1) is set at button Tata frame (7), pad slide plate (1-2) between anchor beam (1-1) and knotted rope pylon (7) contact surface, and slide plate (1-2) is the minimum material of friction factor;
Step 2 is connected through junction plate (10) angle pulley (9) with the side of anchor beam (1-1) towards anchor cable (4), angle pulley (9) is provided with the hoisting line (8) that produces extra level power (6);
Step 3 is provided with anchor beam direction across bridge stopping means (1-3) on knotted rope pylon (7), and vertical bridge is set to limited block (1-4) in anchor beam (1-1) bottom;
Step 4 before extra level power (6) effect, is hung the method job practices according to the arch bridge cantilever button of routine; One end of knotted rope (3) is anchored on the arch section (2); One end of anchor cable (4) is anchored on the back anchorage (5), and the other end of knotted rope (3) and anchor cable (4) then is anchored at anchor beam (1-1) two ends on the knotted rope pylon respectively, and stretch-draw is to design Suo Li; The horizontal component that guarantees button, anchor cable equates, adjusts the linear of arch section (2) simultaneously;
When extra level power (6) is done the time spent; Anchor beam (1-1) can break away moving to anchor cable (4); The horizontal component that makes anchor beam (1-1) go up knotted rope (3) increases; Anchor cable (4) horizontal component reduces, and finally makes the knotted rope (3) and the horizontal component difference of anchor cable (4) equal extra level power (6), thereby balances out extra level power (6);
After extra level power (6) is removed; Because it is bigger than the horizontal component of anchor cable (4) that anchor beam (1-1) is gone up the horizontal component of knotted rope (3), total horizontal force that anchor beam (1-1) bears is towards knotted rope (3), thereby anchor beam (1-1) can break away moving towards knotted rope (3); The horizontal component that anchor beam in the sliding process (1-1) is gone up knotted rope (3) reduces, the horizontal component of anchor cable (4) increases; Until getting back to original position, the horizontal component of knotted rope (3) and anchor cable (4) is balance once more, and anchor beam (1-1) just stops to slide; The Suo Li of knotted rope this moment (3) also returns to Yuan Suoli, thereby the linear of arch section (2) also restored to the original state.
2. the method for utilization button as claimed in claim 1, anchor cable balance extra level power is characterized in that: the material of slide plate (1-2) is corrosion resistant plate or polyfluortetraethylene plate.
3. the method for utilization button as claimed in claim 1, anchor cable balance extra level power is characterized in that: said junction plate (10) is the steel plate in expense hole, two two ends, is articulated in through bearing pin on the web of anchor beam (1-1).
CN201210207980.3A 2012-06-21 2012-06-21 Method utilizing buckle cable and anchor cable for balancing extra horizontal force CN102704405B (en)

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Application Number Priority Date Filing Date Title
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CN102704405B CN102704405B (en) 2014-11-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103572701A (en) * 2013-10-08 2014-02-12 中铁十八局集团有限公司 Buckling anchor system combined rock anchor
CN105155413A (en) * 2015-08-14 2015-12-16 山东大学 Partial non-bonded tunnel type compound anchorage system and method
CN106939556A (en) * 2017-05-05 2017-07-11 贵州大学 A kind of arch bridge cable-hoisting construction stayed knotting method knotted rope tensioning equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210417A (en) * 2007-12-20 2008-07-02 中铁大桥局股份有限公司 Fastener and anchor cable system bidirectional simple supported non-torsion tower top tension anchoring method
WO2010092562A1 (en) * 2009-02-09 2010-08-19 Bahat Ben Ibrahim S Erection method by simple tower instrument devices of building upper bridge construction
CN201943013U (en) * 2011-03-25 2011-08-24 中铁六局集团有限公司 Tensioning device for buckle cables and anchor cables
CN202012047U (en) * 2011-03-03 2011-10-19 中铁十三局集团第一工程有限公司 Steel strand inclined pulling and buckling system of tower

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210417A (en) * 2007-12-20 2008-07-02 中铁大桥局股份有限公司 Fastener and anchor cable system bidirectional simple supported non-torsion tower top tension anchoring method
WO2010092562A1 (en) * 2009-02-09 2010-08-19 Bahat Ben Ibrahim S Erection method by simple tower instrument devices of building upper bridge construction
CN202012047U (en) * 2011-03-03 2011-10-19 中铁十三局集团第一工程有限公司 Steel strand inclined pulling and buckling system of tower
CN201943013U (en) * 2011-03-25 2011-08-24 中铁六局集团有限公司 Tensioning device for buckle cables and anchor cables

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103572701A (en) * 2013-10-08 2014-02-12 中铁十八局集团有限公司 Buckling anchor system combined rock anchor
CN105155413A (en) * 2015-08-14 2015-12-16 山东大学 Partial non-bonded tunnel type compound anchorage system and method
CN106939556A (en) * 2017-05-05 2017-07-11 贵州大学 A kind of arch bridge cable-hoisting construction stayed knotting method knotted rope tensioning equipment
CN106939556B (en) * 2017-05-05 2019-01-18 贵州大学 A kind of arch bridge cable-hoisting construction stayed knotting method knotted rope tensioning equipment

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