CN104452595B - The construction method of the single, double tensioning equipment to adjusting suspension cable of single, double ear muff cylinder - Google Patents
The construction method of the single, double tensioning equipment to adjusting suspension cable of single, double ear muff cylinder Download PDFInfo
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- CN104452595B CN104452595B CN201410636757.XA CN201410636757A CN104452595B CN 104452595 B CN104452595 B CN 104452595B CN 201410636757 A CN201410636757 A CN 201410636757A CN 104452595 B CN104452595 B CN 104452595B
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- suspension cable
- upper blocking
- blocking seat
- lower deck
- cable
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The present invention is a kind of inclined guy cable stretching technology, and it relates to the single, double a kind of construction method of tensioning equipment to regulating suspension cable of single, double ear muff cylinder. Tensioning equipment of the present invention is made up of tension steel strand, prefabricated upper blocking seat, front cassette hydraulic jack, punching load transducer and the sensor data acquisition system of prefabricated lower deck, fastening bolt, one end band extruding anchor fixed end head. A kind of inclined guy cable stretching device of the present invention and construction method can effectively complete cable tension work, before two platforms, the symmetrical stretch-draw of cassette hydraulic jack can make device stressed evenly, jack oil pressure meter reading and punching load transducer are controlled hydraulic jack simultaneously, can reduce error. Package unit is made simple, easy to operate, has stronger practical and popularizing value.
Description
Technical field
The present invention is a kind of inclined guy cable stretching technology, and it relates to single, double tensioning equipment and the construction method to regulating suspension cable of a kind of single, double ear muff cylinder of field of civil engineering.
Background technology
Along with the fast development of bridge cause, cable-stayed bridge miscellaneous also constantly emerges in large numbers in engineering field. Traditional suspension cable adopts finished product rope, and ground tackle generally adopts chill casting formula anchor or sheet clamping type group anchor system, and the stretching end of suspension cable is in the beam section of suspension cable, and stretching construction technology is comparatively ripe.
But, along with the Years Of Service of cable-stayed bridge increases gradually, increasing suspension cable is faced with replacing, tradition suspension cable is faced with and changes difficulty, complicated operation, original structure is damaged to the difficult problems such as large, this makes a lot of designers in the time selecting the suspension cable of cable-stayed bridge, the single, double ear muff cylinder of increasing employing is single, double to regulating suspension cable, and it has installation and replacing is convenient, original structure is damaged to the advantages such as few.
For stretch-draw and the installation of this suspension cable, exist existing stretching construction equipment outmoded, deficiency and the shortcoming such as product facility does not have supporting design tensioning equipment, the difficult control of stretching control force. Existing jack tension, only controls stretching force by oil pressure gauge reading, and error is large, and should not control (when jack oil pressure is large, oil meter pointer can ceaselessly swing). Meanwhile, the counter-force of cable tension is generally provided by near beam body stay cable end, therefore need be at the reserved counterforce device of beam body. And single, double to regulating suspension cable for single, double ear muff cylinder, it is, by tightening the positive and negative silk braid cylinder of cable body that suspension cable carries, suspension cable is applied to stretching force. In the time that the Suo Li of this suspension cable is larger, the positive and negative silk braid cylinder of cable body is difficult to twisting, and it is more difficult that suspension cable applies stretching force, and the power that need to additionally apply reduces the power that sleeve is born. In addition, when this cable body stretch-draw, the impetus of counterforce device must and suspension cable point-blank, otherwise when stretch-draw, the component of stretching force cannot ensure that suspension cable correctly installs. By at beam-ends method for stretching, be difficult to allow the impetus of counterforce device be positioned on the tower end of suspension cable connection and the straight line of beam-ends. If the girder of bridge is camber beam, become more difficult. Because along with the bending change of girder, the force direction that is subject to of every skew cables also can change, and the position of the reserved counterforce device of each position and direction need to calculate respectively and arrange, very loaded down with trivial details.
Visible, be necessary to design one matched tensioning equipment and construction method with it for the single, double ear muff cylinder adopting in cable-stayed bridge is single, double to regulating suspension cable, this inclined guy cable stretching is had to good universality.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the present invention is to provide a kind of single, double ear muff cylinder single, double to regulating tensioning equipment and the construction method of suspension cable, the technical problem mainly solving: the one, when stretch-draw, how counterforce device arranges guarantee drag-line and the stretching force problem at a straight line. The 2nd, how to solve stretching control force accuracy problems. In order to realize above-mentioned technical purpose, the technical solution used in the present invention is:
The single, double tensioning equipment to regulating suspension cable of single, double ear muff cylinder, comprising: prefabricated lower deck, two steel strand wires, prefabricated upper blocking seat, the positive and negative silk braid cylinder of cable body, front cassette hydraulic jack, punching load transducer, sensor data acquisition system and oil pressure gauges; Wherein: described prefabricated lower deck comprises two lower deck steel plates of left and right symmetry, and the inner side of every lower deck steel plate is welded with semicircle steel buckle ear, and described semicircle steel buckle ear fastens the rope head hanger of suspension cable, and power is passed to pin and otic placode successively; On two lower deck steel plates, offer respectively bolt hole and by fastening bolt, two lower deck steel plates clamped;
Described prefabricated upper blocking seat is combined into by two blocks of upper blocking seat steel plates with three semicircle grooves, the middle circle bore dia that is combined into rear formation is slightly larger than suspension cable diameter and is less than oblique pulling cable body anchor head diameter, and on limit, the slightly larger in diameter of two circular holes is in two described steel strand wires diameters; On two blocks of upper blocking seat steel plates, all offer bolt hole, by fastening bolt, described two blocks of upper blocking seat steel plates are clamped, fixed;
On described prefabricated lower deck and prefabricated upper blocking seat, be respectively equipped with for described two circular holes that steel strand wires pass, described two steel strand wires through the circular hole of prefabricated lower deck and prefabricated upper blocking seat, are connected with cassette hydraulic jack before punching load transducer and two platforms respectively; Punching load transducer is arranged between prefabricated upper blocking seat and the front cassette hydraulic jack of two platforms, and sensor data acquisition system is connected with punching load transducer, and oil pressure gauge is connected with front cassette hydraulic jack.
The single, double tensioning equipment to regulating suspension cable of described a kind of single, double ear muff cylinder, the outside of described every lower deck steel plate is provided with longitudinal stiffener and horizontal floor with holes.
Single, double tensioning equipment and the construction method to regulating suspension cable of described a kind of single, double ear muff cylinder, comprises following step:
The first step, prefabricated lower deck are installed: two steel plates of prefabricated lower deck are placed in to suspension cable end, and semicircle steel buckle ear fastens inclined cable head hanger, and two prefabricated lower deck afterbodys are clamped with fastening bolt;
Second step, prefabricated upper blocking seat are installed: the intermediate groove of two blocks of described upper blocking seat steel plates is just laid suspension cable, and tight a bolt, two blocks of upper blocking seat steel plates are just in time stuck on oblique pulling cable body anchor head;
The 3rd step, jack are installed: two radicles are reserved to circular hole through the left and right of prefabricated lower deck and prefabricated upper blocking seat respectively with the steel strand wires of extruding anchor head, be connected with cassette hydraulic jack before punching load transducer and two platforms;
The 4th step, steel strand tension: steel strand wires, now the going down path of power is: jack → steel strand wires → prefabricated lower deck → pin → otic placode; The upwards bang path of power is: jack → upper blocking seat → suspension cable;
The 5th step: inclined guy cable stretching: once steel strand wires stretch-draw stressed after, stressed the reducing of the positive and negative silk braid cylinder of cable body of suspension cable, tightens rapidly the positive and negative silk braid cylinder of cable body on suspension cable, and the power that steel strand wires are born is reduced;
The 6th step: repeat the 4th step, the 5th step, so circulation, constantly reciprocal.
Described punching load transducer is arranged between two described front cassette hydraulic jacks and prefabricated upper blocking seat.
Described front cassette hydraulic jack is arranged in suspension cable both sides, and symmetry is carried out stretch-draw, and stretching force adopts punching load transducer, oil pressure gauge to carry out the dual control of power, makes the neither super stretch-draw of Suo Li of suspension cable, does not also owe stretch-draw.
To sum up, a kind of single, double ear muff cylinder provided by the invention is single, double has advantages of following to the tensioning equipment and the construction method that regulate suspension cable:
The first, install simple and practically, cost of manufacture is low, mounts and dismounts easy to operately, can improve stretch-draw efficiency;
The second, each parts design exquisiteness, from heavy and light, carrying and installation is all more convenient, has saved manpower, only needs several workmans just can complete stretch-draw work;
Three, adopt cassette hydraulic jack symmetry before two platforms to carry out stretch-draw, install stressed evenly, do not produce wobbler action;
The dual control of four, by jack oil pressure meter reading and punching load transducer, jack tension power being carried out power, makes stretching force control more accurate;
Five, prefabricated lower deck is fixed on the hanger place of drag-line, and stretching process is the end application of force to drag-line only, and beam body need not be reserved counterforce device, and while having ensured stretch-draw, counter-force application point and suspension cable, can realize the stretch-draw of suspension cable point-blank smoothly.
Brief description of the drawings
Fig. 1 is inclined guy cable stretching installation drawing of the present invention;
Fig. 2 is prefabricated lower deck front view;
Fig. 3 is prefabricated lower deck side view;
Fig. 4 is prefabricated lower deck top view;
Fig. 5 is the A-A profile of Fig. 1;
Fig. 6 is the B-B profile of Fig. 1;
Wherein, 1, prefabricated lower deck; 2, fastening bolt; 3, steel strand wires; 4, prefabricated upper blocking seat; 5, front cassette hydraulic jack; 6, punching load transducer; 7, otic placode; 8, pin; 9, rope head hanger; 10, the positive and negative silk braid cylinder of cable body; 11, cable body anchor head; 12, suspension cable; 13, semicircle steel buckle ear; 14, longitudinal stiffener; 15, horizontal floor with holes; 16, semi-circular recesses; 17, sensor data acquisition system; 18, oil pressure gauge; 19, bolt hole.
Detailed description of the invention
Below in conjunction with diagram, apparatus of the present invention and construction method are described further.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of instructions such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention. in addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic. thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ". in description of the invention, except as otherwise noted, the implication of " multiple " is two or more.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals. For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
The single, double tensioning equipment to regulating suspension cable of a kind of single, double ear muff cylinder, as shown in Figure 1, comprising: prefabricated lower deck 1, two steel strand wires 3, prefabricated upper blocking seat 4, the positive and negative silk braid cylinder 10 of cable body, front cassette hydraulic jack 5, punching load transducer 6, sensor data acquisition system 17 and oil pressure gauges 18;
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, wherein: described prefabricated lower deck 1 comprises two lower deck steel plates of left and right symmetry, the inner side of every lower deck steel plate is welded with semicircle steel buckle ear 13, described semicircle steel buckle ear 13 fastens the rope head hanger 9 of suspension cable 12, and power is passed to pin 8 and otic placode 7 successively; On two lower deck steel plates, offer respectively bolt hole and by fastening bolt 2, two lower deck steel plates clamped;
As shown in Figure 6, described prefabricated upper blocking seat 4 is combined into by two blocks of upper blocking seat steel plates with three semicircle grooves, the middle circle bore dia that is combined into rear formation is slightly larger than suspension cable 12 diameters and is less than oblique pulling cable body anchor head 11 diameters, and on limit, the slightly larger in diameter of two circular holes is in two described steel strand wires 3 diameters; On two blocks of upper blocking seat steel plates, all offer bolt hole, by fastening bolt 2, described two blocks of upper blocking seat steel plates are clamped, fixed;
On described prefabricated lower deck 1 and prefabricated upper blocking seat 4, be respectively equipped with for described two circular holes that steel strand wires 3 pass, described two steel strand wires 3 through the circular hole of prefabricated lower deck 1 and prefabricated upper blocking seat 4, are connected with cassette hydraulic jack 5 before punching load transducer 6 and two platforms respectively; Punching load transducer 6 is arranged between prefabricated upper blocking seat 4 and the front cassette hydraulic jack 5 of two platforms, and sensor data acquisition system 17 is connected with punching load transducer 6, and oil pressure gauge 18 is connected with front cassette hydraulic jack 5.
The single, double tensioning equipment to regulating suspension cable of described a kind of single, double ear muff cylinder, the outside of described every lower deck steel plate is provided with longitudinal stiffener 14 and horizontal floor with holes 15.
A construction method of utilizing the single, double tensioning equipment to adjusting suspension cable of a kind of single, double sleeve of the present invention, comprises following step:
The first step, prefabricated lower deck are installed: two steel plates of prefabricated lower deck are placed in to suspension cable 12 ends, and semicircle steel buckle ear 13 fastens inclined cable head hanger 9, and two prefabricated lower decks (1) afterbody are clamped with fastening bolt 2;
Second step, prefabricated upper blocking seat are installed: the intermediate groove of two blocks of described upper blocking seat steel plates is just laid suspension cable 12, and tight a bolt, two blocks of upper blocking seat steel plates are just in time stuck on oblique pulling cable body anchor head 11;
The 3rd step, jack are installed: two radicles are reserved to circular hole through the left and right of prefabricated lower deck 1 and prefabricated upper blocking seat 4 respectively with the steel strand wires 3 of extruding anchor head, be connected with cassette hydraulic jack before punching load transducer and two platforms;
The 4th step, steel strand tension: steel strand wires 3, now the going down path of power is: jack → steel strand wires 3 → prefabricated lower deck 1 → pin 8 → otic placode 7; The upwards bang path of power is: jack → upper blocking seat 4 → suspension cable 12.
The 5th step: inclined guy cable stretching: once steel strand wires 3 stretch-draw stressed after, stressed the reducing of the positive and negative silk braid cylinder of cable body of suspension cable, tightens rapidly the positive and negative silk braid cylinder 10 of cable body on suspension cable 12, the power that steel strand wires 3 are born reduces.
The 6th step: repeat the 4th step, the 5th step, so circulation, constantly reciprocal;
To sum up, described a kind of single, double ear muff cylinder is single, double to be made simply to the tensioning equipment that regulates suspension cable, and construction method facilitates feasible, has stronger practical and popularizing value.
Claims (3)
1. a construction method for the single, double tensioning equipment to adjusting suspension cable of single, double sleeve, device comprises: lower deck (1), two steel strand wires (3), upper blocking seat (4), the positive and negative silk braid cylinder of cable body (10), front cassette hydraulic jack (5), punching load transducer (6), sensor data acquisition system (17) and oil pressure gauge (18); Wherein: described lower deck (1) comprises the lower deck steel plate of two of left and right symmetry, the inner side of every lower deck steel plate is welded with semicircle steel buckle ear (13), described semicircle steel buckle ear (13) fastens the rope head hanger (9) of suspension cable (12), and power is passed to pin (8) and otic placode (7) successively; On two lower deck steel plates, offer respectively bolt hole and by fastening bolt (2), two lower deck steel plates clamped; Described upper blocking seat (4) is combined into by two blocks of upper blocking seat steel plates with three semicircle grooves, be combined into the circular hole of three centers of circle of rear formation on same straight line, middle circle bore dia is slightly larger than suspension cable (12) diameter and is less than oblique pulling cable body anchor head (11) diameter, and on limit, the slightly larger in diameter of two circular holes is in two described steel strand wires (3) diameter; On two blocks of upper blocking seat steel plates, all offer bolt hole, by fastening bolt (2), described two blocks of upper blocking seat steel plates are clamped, fixed; On described lower deck (1) and upper blocking seat (4), be respectively equipped with the circular hole passing for described two steel strand wires (3), described two steel strand wires (3) through the circular hole of lower deck (1) and upper blocking seat (4), are connected with cassette hydraulic jack (5) before punching load transducer (6) and two platforms respectively; Punching load transducer (6) is arranged between upper blocking seat (4) and the front cassette hydraulic jack (5) of two platforms, sensor data acquisition system (17) is connected with punching load transducer (6), and oil pressure gauge (18) is connected with front cassette hydraulic jack (5);
It is characterized in that: comprise following step:
The first step, lower deck are installed: two steel plates of lower deck are placed in to suspension cable (12) end, and semicircle steel buckle ear (13) fastens inclined cable head hanger (9), and two lower decks (1) afterbody are clamped with fastening bolt (2); Second step, upper blocking seat are installed: the intermediate groove of two blocks of described upper blocking seat steel plates is just laid suspension cable (12), and tight a bolt, two blocks of upper blocking seat steel plates are just in time stuck on oblique pulling cable body anchor head (11);
The 3rd step, jack are installed: two radicles are reserved to circular hole through the left and right of lower deck (1) and upper blocking seat (4) respectively with the steel strand wires (3) of extruding anchor head, be connected with cassette hydraulic jack before punching load transducer and two platforms;
The 4th step, steel strand tension: steel strand wires (3), now the going down path of power is: jack → steel strand wires (3) → lower deck (1) → pin (8) → otic placode (7); The upwards bang path of power is: jack → upper blocking seat (4) → suspension cable (12);
The 5th step: inclined guy cable stretching: steel strand wires (3) once stretch-draw stressed after, stressed the reducing of the positive and negative silk braid cylinder of cable body of suspension cable, tightens rapidly the positive and negative silk braid cylinder of cable body (10) on suspension cable (12), the power that steel strand wires (3) are born reduces;
The 6th step: repeat the 4th step, the 5th step, so circulation, constantly reciprocal.
2. the single, double construction method of tensioning equipment to regulating suspension cable of single, double sleeve according to claim 1, is characterized in that, described punching load transducer (6) is arranged between two described front cassette hydraulic jacks (5) and upper blocking seat (4).
3. the single, double construction method of tensioning equipment to regulating suspension cable of single, double sleeve according to claim 2, it is characterized in that: described front cassette hydraulic jack (5) is arranged in suspension cable (12) both sides, symmetry is carried out stretch-draw, stretching force adopts punching load transducer (6), oil pressure gauge (18) to carry out the dual control of power, make the neither super stretch-draw of Suo Li of suspension cable, also do not owe stretch-draw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410636757.XA CN104452595B (en) | 2014-11-12 | 2014-11-12 | The construction method of the single, double tensioning equipment to adjusting suspension cable of single, double ear muff cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410636757.XA CN104452595B (en) | 2014-11-12 | 2014-11-12 | The construction method of the single, double tensioning equipment to adjusting suspension cable of single, double ear muff cylinder |
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| Publication Number | Publication Date |
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| CN104452595A CN104452595A (en) | 2015-03-25 |
| CN104452595B true CN104452595B (en) | 2016-05-25 |
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| CN106284073B (en) * | 2016-08-25 | 2018-03-30 | 中铁大桥局集团有限公司 | A kind of suspension cable beam-ends hanging cable equipment |
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| CN108867868A (en) * | 2018-08-13 | 2018-11-23 | 青岛华斯壮能源科技有限公司 | Steel strand prestress flexible draw bar connection structure |
| CN109775628B (en) * | 2019-01-29 | 2024-04-30 | 北京城建集团有限责任公司 | Double-rope lifting device and construction method thereof |
| CN111089715B (en) * | 2020-01-10 | 2022-07-15 | 河海大学 | Bridge inhaul cable force detection device and detection method |
| CN111175068B (en) * | 2020-02-24 | 2021-11-23 | 长沙理工大学 | Method for typical damage simulation device of cable-stayed bridge |
| CN112065061B (en) * | 2020-08-26 | 2021-06-04 | 中冶建筑研究总院有限公司 | Prestress intelligent regulation and control device and cable force regulation and control method thereof |
| CN115506598A (en) * | 2022-10-31 | 2022-12-23 | 中冶(上海)钢结构科技有限公司 | Computer-controlled multi-beam chord beam synchronous tensioning method |
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| EP1215347A2 (en) * | 2000-12-13 | 2002-06-19 | Walter Bau-Aktiengesellschaft | Method for installing and tensioning a free tendon, and anchoring device for carrying out the method |
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