CN104947592B - The tensioning of cable-styled bridge sling and tune rope construction method - Google Patents

The tensioning of cable-styled bridge sling and tune rope construction method Download PDF

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Publication number
CN104947592B
CN104947592B CN201510216681.XA CN201510216681A CN104947592B CN 104947592 B CN104947592 B CN 104947592B CN 201510216681 A CN201510216681 A CN 201510216681A CN 104947592 B CN104947592 B CN 104947592B
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tensioning
cable
value
hoist
bridge
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CN201510216681.XA
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Chinese (zh)
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CN104947592A (en
Inventor
梁晓东
谢鸿
杨文选
胡红波
肖泽林
刘高
项超群
易诞
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湖南联智桥隧技术有限公司
长沙市公路桥梁建设有限责任公司
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Priority to CN201510216681.XA priority Critical patent/CN104947592B/en
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Abstract

The invention provides a kind of tensioning of cable-styled bridge sling and tune rope construction method, including step:One intelligent tensioning jack, all intelligent tensioning jack and computer control platform wired connection are installed in the stretching end of every hoist cable of cable-styled bridge;By the manipulation of computer control platform, while all hoist cables are carried out with pretension and Integral synchronous grading tension;The Suo Li levels that intelligent tensioning jack is fed back in computer control platform reach the stage calculate desired value 90 96% when, successively all hoist cables are entered with line asynchronous tensioning adjustment so that all hang the calculating desired value that cable force reaches the stage;After the completion of Second Construction, overall tune rope is carried out to all cable forces that hang so that final Suo Li reaches design object value.The present invention can carry out " synchronization " or " asynchronous " tensioning to all hoist cables of bridge, simplify hoist cable working procedure and technique, improve construction quality and reliability, shorten the construction period about more than 70%, save construction cost about more than 30%.

Description

The tensioning of cable-styled bridge sling and tune rope construction method

Technical field

The present invention relates to cable-styled bridge technology field, especially, is related to a kind of tensioning of cable-styled bridge sling and is applied with tune rope Work method.

Background technology

The tensioning of cable-styled bridge (bowstring arch bridge, cable-stayed bridge, suspension bridge etc.) hoist cable (bar) and tune rope construction are bridge constructions In one critical process, the operation mainly contains two parts of the tensioning of hoist cable (bar) and cable force adjustment.At present, hoist cable The tensioning of (bar) and adjustment are constructed substantially or using artificial operation with traditional jack, and also need the tune rope for carrying out complexity to change In generation, calculates.This allows for the tensioning of the cable-styled bridge sling (bar) in current Practical Project construction and adjusts the rope construction period longer, Complex procedures, calculating task weight often need artificial handling jack repeatedly, repeatedly stretching and adjustment to can be only achieved the Cheng Qiao of design Suo Li and bridge linear.

Also, during traditional tune rope, the tensioning of hoist cable and tune Suo Jiben adopt artificial and traditional stretch-draw jack Constructed, Construction State mainly artificially judges, construction precision and reliability are difficult to ensure that.Most of all, every hoist cable Each adjustment of (bar) Suo Li can all affect the stress of other hoist cables (bar) to produce unpredicted change, and can not intuitively, soon Speed, the Suo Li states for easily finding out full-bridge hoist cable (bar) after tune rope every time, need to be in conjunction with cable tension test equipment repeatedly to full-bridge rope Power is measured and just can determine that, further increases hoist cable (bar) tensioning and adjusts the complexity and error of rope construction to affect.

At present, the thought of " Based Intelligent Control " is increasingly widespread in field of civil engineering, and " intelligent tensioning " is in concrete-bridge It has been successfully applied in terms of prestressed stretch-draw and has been promoted, intellectual technology is also increasingly mature.The present invention is based on intelligence The development of technology, the thought of " Based Intelligent Control " and " integral tension " is effectively combined, and is applied to still in Traditional Man operation Hoist cable (bar) tensioning and tune rope construction technology, improve and innovate hoist cable (bar) tensioning and adjust rope construction technology so that this Technique more standard, convenient, safe and reliable.

Content of the invention

Present invention aim at a kind of tensioning of cable-styled bridge sling is provided and adjusts rope construction method, to solve hoist cable tensioning Rope complex process is loaded down with trivial details, the duration is longer and the technical problem of construction quality with adjusting.

For achieving the above object, the invention provides a kind of tensioning of cable-styled bridge sling and tune rope construction method, which is special Levy and be, comprise the following steps:

After the completion of A, cable-styled bridge sling hanging cable, one intelligent tensioning is installed in the stretching end of every hoist cable of cable-styled bridge Jack, all intelligent tensioning jack and computer control platform wired connection;

B, the manipulation for passing through computer control platform, while carry out pretension to all hoist cables;

C, desired value and classification step are calculated according to the stage of cable tension, by the manipulation of computer control platform, while Integral synchronous grading tension is carried out to all hoist cables;

The Suo Li levels that D, intelligent tensioning jack are fed back in computer control platform reach the 90- for calculating desired value in the stage When 96%, successively all hoist cables are entered with line asynchronous tensioning adjustment so that all hang the calculating desired value that cable force reaches the stage;

The secondary dead loads such as E, deck paving, pavement and bridge floor guardrail construction after the completion of, to all hang cable force carry out whole Body adjusts rope so that final Suo Li reaches design object value.

Preferably, the Integral synchronous grading tension in step C is:All hoist cables are selected in computer control platform, in terms of The stretching force classification step determined after calculation, is input into each grading tension force value, and controlling all hoist cables of corresponding jack pair is carried out Synchronous tension, after the completion of upper level tensioning, then carries out next stage tensioning successively.

Preferably, the asynchronous tensioning in step D is adjusted to:After the completion of Integral synchronous tensioning, lock in computer control platform The jack of tensioning hoist cable is needed not continue to surely, and only selecting needs several hoist cables of the single of tensioning or local, input to be adjusted Desired value, controlling corresponding jack carries out tensioning.

Preferably, the cable force adjustment of step D and step E is:Hoist cable numbering is selected in computer control platform, and input is intended to adjust Whole desired value, controlling corresponding jack carries out tensioning.

The invention has the advantages that:

The present invention relates to the tensioning of a kind of cable-styled bridge (bowstring arch bridge, cable-stayed bridge, suspension bridge etc.) hoist cable is constructed with rope is adjusted Method, can carry out " synchronization " or " asynchronous " tensioning, simplify hoist cable working procedure and technique, improve to all hoist cables of bridge Construction quality and reliability, shorten the construction period about more than 70%, save construction cost about more than 30%.The method can achieve:

1st, Integral synchronous tensioning is implemented to full-bridge hoist cable:Hung by computer control platform and intelligent tensioning jack pair full-bridge Rope accurately applies stretching force, and eliminating human factor in traditional construction affects, it is ensured that stretching force precision is within ± 5kN so that Stretching process whole process is fully controllable, improves the accuracy and reliability for hanging cable force;

2nd, asynchronous adjustment is implemented to full-bridge hoist cable:After the completion of full-bridge hoist cable tensioning, can according to the Suo Li targets of whole bridge and Line style state to full-bridge hoist cable in any one or a few Gents determine drag-line and carry out the intelligent of local to adjust rope;

3rd, Suo Li Simultaneous Monitorings:Real-time synchronization monitoring and feedback are carried out to the Suo Li of every hoist cable (bar) in stretching process, Read and manipulate from numerically comprehensively, intuitively, accurately and rapidly surveying for main station controller feedback, the change of discovery Suo Li, makes in time Test repeatedly in whole work progress interface, the calculating iterative process and full-bridge Suo Li that enormously simplify cable-styled bridge cable force adjustment Operation, beneficial to rapid correction of deviation.Meanwhile, also so that whole work progress and Construction State safety and reliability.

The cable-styled bridge sling construction method of this research and development and system, it is adaptable to all kinds of bowstring arch bridges, cable-stayed bridge and outstanding The hoist cable construction of cable bridge, the particularly cable-styled bridge to Mid and minor spans, using value are higher.The present invention is due to system controllability By force, less demanding to construction environment, do not limited by execution conditions substantially.

In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages. Below with reference to figure, the present invention is further detailed explanation.

Description of the drawings

The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is the FB(flow block) of the preferred embodiment of the present invention.

Specific embodiment

Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be limited according to claim Multitude of different ways that is fixed and covering is implemented.

Referring to Fig. 1, the invention discloses a kind of tensioning of cable-styled bridge sling and tune rope construction method, mainly include following Step:

(1) bridge fine strain of millet subarch is installed with after the completion of subarch hoist cable hanging cable, installs one in the stretching end of every hoist cable of subarch Intelligent tensioning jack, all intelligent tensioning jack and computer control platform wired connection;

(2) by the manipulation of computer control platform, while all suspension rods to subarch carry out pretension;

Pretightning force is about 20KN.Herein it is not recommended that the detailed assignment of pretightning force, because according to different bridge types and drag-line situation, in advance Clamp force is different, needs according to the situation.

(3) subarch falsework is removed, main arch is installed;

(4) bridge fine strain of millet main arch is installed with after the completion of main arch hoist cable hanging cable, installs one in the stretching end of every hoist cable of main arch Intelligent tensioning jack, all intelligent tensioning jack and computer control platform wired connection;

(5) by the manipulation of computer control platform, while all suspension rods to main arch carry out pretension;

It is for about 30KN or so that pretightning force can be set.

(6) main arch falsework is removed;

(7) stage calculating desired value of the cable force before the second phase mats formation, the rope to all hoist cables of major and minor arch are hung according to full-bridge Power carries out Integral synchronous grading tension;

For example, all hoist cables are selected in computer control platform, and with the stretching force classification step determined after calculating, input is every One grading tension force value, controls all hoist cables of corresponding jack pair and synchronizes tensioning, after the completion of upper level tensioning, then successively Carry out next stage tensioning.

(8) full-bridge hang cable force be close to the second phase mat formation before stage when calculating desired value, enter line asynchronous to full-bridge hoist cable Draw adjustment so that full-bridge Suo Li reaches stage calculating desired value;

After the completion of Integral synchronous tensioning, locking in computer control platform needs not continue to the jack of tensioning hoist cable, can Several hoist cables of the single of tensioning or local being needed only to select, being input into the desired value to be adjusted, controlling corresponding jack is carried out Tensioning.

(9) second phase load such as deck paving, pavement, guardrail construction;

(10) according to the deviation between the Suo Li actual conditions and design object value of computer control platform feedback, then by electricity The corresponding intelligence jack pair full-bridge hoist cable of brain control platform manipulation carries out Suo Li fine settings successively, and making full-bridge Suo Li meet design will Ask;

(11) tensioning and tune rope are completed, and remove all jack.

The fine setting of step (8) and step (10) is:Hoist cable numbering is selected in computer control platform, is input into the mesh to be adjusted Scale value, controlling corresponding jack carries out tensioning.Computer control platform will control tensioning instrument will to the transmission of corresponding jack The instruction of cable force adjustment to desired value, easy to operate quick.

It is below specific embodiment.

Half-through " butterfly " arch bridge that knife river Landscape Bridge is a beam-arch composite bridge is dragged for, the long 106m of bridge, across footpath are combined as 20m+66m+20m, the wide 26~36m of bridge, two-way four-lane.The bridge girder and major and minor arch are steel box structure, wherein major arch rib Theoretical span 66m, ratio of rise to span 1/2.2, by 22.5 ° of flares, subarch arch rib theory span 96m, ratio of rise to span 1/7.2, by 22.5 ° Incline, double arches interlock, and couple hardness with softness, just like butterfly with different colors wing is intended to wave.

Drag for knife river Landscape Bridge and 9 pairs of main arch hoist cables, 8 pairs of subarch hoist cables are set altogether, full-bridge totally 34 hoist cables.Hoist cable is along bridge axle water It is 5m to put down to suspension centre reference center distance, is centrosymmetrically arranged with regard to bridge.Hoist cable adopts HDPE sheath parallel steel wires, major and minor arch Suspension rod rope upper end is hanger, and lower end is can stretching type chill casting anchor head.Main arch hoist cable is anchored at main arch dividing plate and girder dividing plate respectively On, subarch hoist cable is anchored on subarch dividing plate and pavement outrigger respectively.Major and minor arch hoist cable carries out one-end tension in beam-ends.

Table 1 be drag for knife river Landscape Bridge be designed to bridge Suo Li and bridge floor second phase pavement construction before the Suo Li stages calculate mesh Scale value

As seen from the above table, the second stage of last stage calculating desired value for dragging for knife river Landscape Bridge main arch suspender force is distributed in Between 303.7KN~362.5KN, the second stage of last stage of subarch suspender force calculates desired value and is distributed in 90.0KN~131.3KN Between, it is seen then that in the stage, all suspender force minimum of a values of main arch are 303.7KN, and all suspender force minimum of a values of subarch are 90.0KN, is the accuracy of the globality and tensioning value that ensure synchronous tension construction, and in Integral synchronous grading tension, choosing is less than Or it is same as entirety equal to whole ten numerical value (such as main arch hoist cable 300KN, subarch hoist cable 90KN, being accurate to 10KN) of minimum rope force value The desired value of step tensioning, so, to 300KN, all hoist cable elder generation synchronous tensions of subarch are extremely for all hoist cable elder generation synchronous tensions of main arch 90KN.For guaranteeing the security of work progress, while meet the globality of stretching process, all hoist cables point 5 grades of Integral synchronous Draw.

According to the suspender force desired value of table 1, desired value and the cable force adjustment of major-minor arch suspension rod Pyatyi integral tension is designed Value is as follows:

2 major-minor of table encircles suspension rod Pyatyi integral tension Suo Li

Boom-type Pyatyi tensioning target Suo Li (kN) Per one-level stretching rope power (kN) Main arch suspension rod 300 60 Subarch suspension rod 90 18

After the completion of Pyatyi Integral synchronous tensioning, (i.e. all main arch hang cable force and all reach 300KN, and all subarch hang cable force 90KN all reached, and error is less than ± 5KN), then " asynchronous " tensioning adjustment is carried out to the Suo Li of every suspension rod so that this stage Final stretching rope power reaches the second stage of last stage calculating desired value of table 1.

After the completion of the bridge floor second phase mats formation, according to theoretical calculation, the Suo Lihui of all hoist cables of full-bridge automatically achieve design into Bridge Suo Li, if the Suo Li actual conditions that is fed back by computer control platform are had differences with theoretical calculation, then passes through computer control Intelligence jack pair full-bridge hoist cable carries out Suo Li fine settings successively accordingly for platform manipulation processed, makes full-bridge Suo Li meet design requirement.

Finally, all jack are removed.

The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (3)

1. a kind of tensioning of cable-styled bridge sling with adjust rope construction method, it is characterised in that comprise the following steps:
After the completion of A, cable-styled bridge sling hanging cable, one intelligent tensioning is installed in the stretching end of every hoist cable of cable-styled bridge very heavy Top, all intelligent tensioning jack and computer control platform wired connection;
B, the manipulation for passing through computer control platform, while carry out pretension to all hoist cables;
C, desired value and classification step are calculated according to the stage of cable tension, by the manipulation of computer control platform, while to institute There is hoist cable to carry out Integral synchronous grading tension;
In Integral synchronous grading tension, choosing is less than or equal to the mesh of whole ten numerical value as Integral synchronous tensioning of minimum rope force value Scale value;
The Suo Li levels that D, intelligent tensioning jack are fed back in computer control platform reach the 90-96% for calculating desired value in the stage When, successively all hoist cables are entered with line asynchronous tensioning adjustment so that all hang the calculating desired value that cable force reaches the stage;Asynchronous Tensioning adjustment is specially:After the completion of Integral synchronous tensioning, locking in computer control platform needs not continue to the thousand of tensioning hoist cable Jin top, only selecting needs several hoist cables of the single of tensioning or local, is input into the desired value to be adjusted, controls corresponding very heavy jacking Row tensioning;
After the completion of the construction of the secondary dead loads such as E, deck paving, pavement and bridge floor guardrail, overall tune is carried out to all cable forces that hang Rope so that final Suo Li reaches design object value.
2. construction method according to claim 1, it is characterised in that the Integral synchronous grading tension in step C is:In electricity All hoist cables are selected in brain control platform, with the stretching force classification step determined after calculating, are input into each grading tension force value, control Make all hoist cables of corresponding jack pair and synchronize tensioning, after the completion of upper level tensioning, then carry out next stage tensioning successively.
3. construction method according to claim 1 and 2, it is characterised in that the cable force adjustment of step D and step E is:In electricity Hoist cable numbering is selected in brain control platform, the desired value to be adjusted is input into, and controlling corresponding jack carries out tensioning.
CN201510216681.XA 2015-04-30 2015-04-30 The tensioning of cable-styled bridge sling and tune rope construction method CN104947592B (en)

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Publication number Priority date Publication date Assignee Title
CN105672132A (en) * 2016-01-04 2016-06-15 湖南联智桥隧技术有限公司 Cable-stayed bridge cable adjusting method and cable adjusting system adopting cable adjusting method
CN106523448B (en) * 2016-12-07 2018-03-16 中国铁路设计集团有限公司 The uniform tensioning intelligent tensioning system of the power such as prestressing tendon and its method for the uniform tensioning of the power such as prestressing tendon
CN108221700B (en) * 2018-01-05 2019-10-25 中建三局第一建设工程有限责任公司 Combined inclined drag-line based on Suo Li conduction compensation is the same as step rope method

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CN101701450B (en) * 2009-09-30 2011-12-21 法尔胜集团公司 Bridge intelligent cable system with built-in fiber grating sensor
CN201865358U (en) * 2010-11-24 2011-06-15 湖南联智桥隧技术有限公司 Intelligent synchronous prestress tensioning system
CN102912988B (en) * 2012-11-15 2015-06-10 湖南联智桥隧技术有限公司 Tension system
CN103629173B (en) * 2013-11-28 2015-12-02 湖南联智桥隧技术有限公司 Prestressed stretch-draw hydraulic system, prestress tensioning equipment and controlling method thereof
CN103741953A (en) * 2013-12-20 2014-04-23 广西科技大学 Automatic prestress tensioning control system
CN104314905B (en) * 2014-10-14 2017-03-15 湖南联智桥隧技术有限公司 Prestressing force intelligent tensioning hydraulic system, prestress tensioning equipment and its control method

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