CN103643636B - A kind of rigid hanger thrusting slip device and gliding method thereof - Google Patents
A kind of rigid hanger thrusting slip device and gliding method thereof Download PDFInfo
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- CN103643636B CN103643636B CN201310616131.8A CN201310616131A CN103643636B CN 103643636 B CN103643636 B CN 103643636B CN 201310616131 A CN201310616131 A CN 201310616131A CN 103643636 B CN103643636 B CN 103643636B
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- cord clip
- rigid hanger
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- suspension rod
- clip
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000725 suspension Substances 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 claims description 6
- 210000001364 upper extremity Anatomy 0.000 claims description 5
- 238000007796 conventional method Methods 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention discloses a kind of rigid hanger thrusting slip device and gliding method thereof, directly over suspension rod guide pipe center, cord clip is installed, to cord clip applying portion fastening force, then rigid hanger and interim thrustor are installed, in rigid hanger stretching process, by the thrusting slip stage by stage to cord clip, control the corner variable quantity of rigid hanger, ensure that suspension rod guide pipe can not block rigid hanger, until complete rigid hanger stretch-draw work, after cord clip slides onto design attitude, by adopting minute wheel to cord clip, symmetrical, the mode that Multipoint synchronous is fastening, complete the fastening work of cord clip.The invention has the advantages that operating process is simple and convenient, time saving and energy saving, do not need to adopt the way strengthening suspension rod guide pipe diameter, adapt to the change of rigid hanger corner, or suspension rod guide pipe and anchor plate are laid in redrilling.
Description
Technical field
The invention belongs to bridge equipment installing area, be specifically related to a kind of rigid hanger thrusting slip device and gliding method thereof.
Background technology
In self-anchoring type or earth anchored suspension bridge, the shorter suspension rod of length is often designed to rigid hanger, and these rigid hangers, in work progress, often also exist the contraposition difficult problem of installation and stretch-draw.There is the feature that length is short, diameter is large in the rigid hanger due to suspension bridge, in suspender tension process, main push-towing rope is obviously non-linear, cord clip is large to the horizontal off normal in king-tower direction, if to cord clip setting pred icted deflection, then there is deviation in the suspension rod guide pipe of stiff girder and cord clip center, causes rigid hanger cannot install and stretch-draw.
Composition graphs 1, cord clip 1 is after being subject to downward stretching force, and main push-towing rope 4 can produce displacement downwards, and cord clip 1 can produce the horizontal movement (see dotted portion in Fig. 1) to king-tower direction (left side namely in Fig. 1).After ensureing rigid hanger 7 stretch-draw, the center line of cord clip 1, rigid hanger 7 and suspension rod guide pipe 8 overlaps and keeps vertically, when cable finish stage, cord clip 1 to be carried out pre-dress content to retain sovereignty over a part of the country.Because rigid hanger 7 is shorter, the pre-value partially of cord clip 1 is comparatively large, causes the corner of rigid hanger 7 under original state comparatively large, can be stuck in the edge of suspension rod guide pipe 8, cannot complete the initial installation of rigid hanger 7.
Composition graphs 2, adopt the way strengthening suspension rod guide pipe 8 diameter, adapt to the change of rigid hanger 7 corner, installation and the stretch-draw problem of rigid hanger 7 can be solved, but the local stress of girder 5, suspension rod guide pipe 8 and anchor plate can be made to become very large, cause local pressure unreasonable, affect the durability that suspension bridge uses.
Summary of the invention
The object of the present invention is to provide a kind of rigid hanger thrusting slip device and gliding method thereof, do not need to adopt the way strengthening suspension rod guide pipe diameter, adapt to the change of rigid hanger corner, or suspension rod guide pipe and anchor plate are laid in redrilling, just can solve rigid hanger and install and stretch-draw problem.
The technical solution realizing the object of the invention is:
A kind of rigid hanger thrusting slip device, comprise cord clip, work cord clip and hydraulic jack, cord clip is fixed on main push-towing rope, directly over the initial center position suspension rod guide pipe center of cord clip, rigid hanger is fixed on cord clip, a work cord clip is set respectively above and below cord clip, the clear distance of the work cord clip and cord clip that are positioned at top is not less than hydraulic jack shortest length and adds plate thickness, the work cord clip of below and the clear distance of cord clip are the design slippage of cord clip, the main push-towing rope side worked up between cord clip and cord clip, be arranged with two hydraulic jacks, hydraulic jack base is close to the lower edge of top work cord clip, the piston rod of hydraulic jack withstands the upper limb of cord clip by backing plate.
The work cord clip of top and the clear distance of cord clip are not less than hydraulic jack shortest length and plate thickness sum, and the work cord clip of below and the clear distance of cord clip are the design slippage of cord clip; The stroke of hydraulic jack 3 is greater than the design slippage of cord clip 1.
A gliding method for rigid hanger thrusting slip device, method step is as follows:
Step 1, under cable finish stage, first cord clip is arranged on the main push-towing rope directly over suspension rod guide pipe center, cord clip is applied to the preliminary pretightning force of 25%-30%, then load onto rigid hanger according to a conventional method.
Each on step 2, main push-towing rope above and below cord clip an odd-job cord clip is installed, the work cord clip of top and the clear distance of cord clip are not less than hydraulic jack shortest length and plate thickness sum, the work cord clip of below and the clear distance of cord clip are the design slippage of cord clip, interim work cord clip is applied to the fastening force of 100%, on the main push-towing rope between work cord clip up and cord clip, symmetry installs two hydraulic jacks.
Step 3, substep stretch-draw rigid hanger, along with the increase gradually of suspension rod power, the main push-towing rope at suspension rod place is out of shape downwards, and cord clip to the slowly movement of king-tower direction, until rigid hanger lower end is offset to the edge of suspension rod guide pipe, now, will suspend the stretch-draw work of rigid hanger.
Step 4, slowly along main push-towing rope, downward power is applied to cord clip with hydraulic jack, make cord clip slowly slippage downwards, until rigid hanger deflection opposite side but be as the criterion with the limit wall not contacting suspension rod guide pipe, now, stop pushing tow work.
Step 5, repetition above-mentioned steps 3 and 4, back and forth carry out the stretch-draw work of rigid hanger, until 95% of the stretching force close design stretching force of rigid hanger time, during downward pushing tow cord clip, when just making rigid hanger keep vertical, namely stop pushing tow work, apply rigid hanger stretching force to 100% design load.
Step 6, simultaneously with some hydraulic fixing equipment, the high-strength bolt nut of cord clip is designed to fastening force carry out minute wheel, symmetry, synchronously fastening by often taking turns 15%-20%, makes the fastening force of high-strength nut reach 100% of design load.
Work cord clip above and below step 7, dismounting cord clip and hydraulic jack.
Above-mentioned hydraulic fixing equipment adopts and is no less than 2N platform, wherein N >=2.
The present invention compared with prior art, its remarkable advantage: operating process is simple, convenient, easily complete installation and the stretch-draw work of rigid hanger 7, the local stress of girder 5, suspension rod guide pipe 8 and anchor plate can not be made to become very large, Force transmission parts can be made to keep reasonable stress, the durability that suspension bridge uses can not be affected.
Accompanying drawing explanation
To be that cord clip is stressed move forward and backward contrast schematic diagram to Fig. 1.
Fig. 2 is that the conventional suspension rod guide pipe diameter method that strengthens installs rigid hanger schematic diagram.
Fig. 3 is view before rigid hanger thrusting slip device of the present invention is installed.
Fig. 4 is rigid hanger thrusting slip device installment state schematic diagram of the present invention.
Fig. 5 is that rigid hanger thrusting slip device of the present invention is with suspender tension cord clip gradation pushing tow slip-down state schematic diagram.
Fig. 6 is rigid hanger thrusting slip device of the present invention with view when sliding to into bridge under suspender tension cord clip pushing tow.
Detailed description of the invention
Below in conjunction with accompanying drawing 3-Fig. 6, the present invention is described in further detail.
A kind of rigid hanger thrusting slip device, comprise cord clip 1, work cord clip 2 and hydraulic jack 3, cord clip 1 is fixed on main push-towing rope 4, directly over initial center position suspension rod guide pipe 8 center of cord clip 1, to cord clip 1 applying portion pretightning force, rigid hanger 7 is arranged on cord clip 1, a work cord clip 2 is set respectively above and below cord clip 1, top work cord clip 2 is not less than hydraulic jack 3 shortest length and plate thickness sum with the clear distance of cord clip 1, and lower work cord clip 2 and the clear distance of cord clip 1 are the design slippage of cord clip 1.
Main push-towing rope side between work cord clip 2 up and cord clip 1, symmetrical attachment is provided with two hydraulic jacks 3, require that the stroke of hydraulic jack 3 is greater than the design slippage of cord clip 1, hydraulic jack 3 base is close to the lower edge of work cord clip 2, and piston rod withstands the upper limb of cord clip 1 by backing plate.
Top work cord clip 2 and the clear distance of cord clip 1 are the distance that top works between the lower edge of cord clip 2 and the upper limb of cord clip 1, and the clear distance of lower work cord clip 2 and cord clip 1 is the distance between the upper limb of lower work cord clip 2 and the lower edge of cord clip 1.
Composition graphs 1 ~ Fig. 6, a kind of gliding method based on rigid hanger thrusting slip device, method step is as follows:
Step 1, under cable finish stage, first cord clip 1 is arranged on the main push-towing rope 4 directly over suspension rod guide pipe 8 center, cord clip 1 is applied to the preliminary pretightning force of 25%-30%, then to sling rigid hanger 7 with mobile crane, rigid hanger 7 is by inserting ear 6 and cord clip 1 pin joint.
Each on step 2, main push-towing rope 4 above and below cord clip 1 an interim work cord clip 2 is installed, top work cord clip 2 is not less than hydraulic jack 3 shortest length and plate thickness sum with the clear distance of cord clip 1, work cord clip 2 is applied to the fastening force (namely reaching maximum fastening force) of 100%, on the main push-towing rope 4 worked up between cord clip 2 and cord clip 1, symmetry installs two hydraulic jacks 3.
Step 3, substep stretch-draw rigid hanger 7, along with the increase gradually of suspension rod power, the main push-towing rope 4 at suspension rod place is out of shape downwards, cord clip 1 is to the slowly movement of king-tower direction, until rigid hanger 7 lower end is offset to the edge of suspension rod guide pipe 8, now, the stretch-draw work of rigid hanger 7 is suspended.
Step 4, slowly along main push-towing rope, downward thrust is applied to cord clip 1 with hydraulic jack 3, make cord clip 1 slowly slippage downwards, until rigid hanger 7 is partial to opposite side but is as the criterion with the limit wall not contacting suspension rod guide pipe 8, now, stop pushing tow work.
Step 5, repetition above-mentioned steps 3 and step 4, back and forth carry out the stretch-draw work of rigid hanger 7, until 95% of the stretching force close design stretching force of rigid hanger 7 time, downward pushing tow cord clip 1, when just making rigid hanger 7 keep vertical, namely stop pushing tow work, apply rigid hanger stretching force to 100% design load.
Step 6, use 6 hydraulic fixing equipment simultaneously, the high-strength bolt nut of cord clip 1 is designed to fastening force carry out minute wheel, symmetry, synchronously fastening by often taking turns 15%-20%, makes the fastening force of high-strength nut reach 100% of design load.
Work cord clip 2 above and below step 7, dismounting cord clip 1 and hydraulic jack 3.
Operating process of the present invention is simple, convenient, easily complete installation and the stretch-draw work of rigid hanger 7, the local stress of girder 5, suspension rod guide pipe 8 and anchor plate can not be made to become very large, Force transmission parts can be made to keep reasonable stress, the durability that suspension bridge uses can not be affected.
Claims (5)
1. a rigid hanger thrusting slip device, it is characterized in that: comprise cord clip (1), work cord clip (2) and hydraulic jack (3), cord clip (1) is fixed on main push-towing rope (4), the initial center position of cord clip (1) is positioned at directly over suspension rod guide pipe (8) center, rigid hanger (7) is fixed on cord clip (1), job cord clip (2) is set respectively above and below cord clip (1), main push-towing rope (4) side worked up between cord clip (2) and cord clip (1), be arranged with two hydraulic jacks (3), hydraulic jack (3) base is close to the lower edge of top work cord clip (2), the piston rod of hydraulic jack (3) withstands the upper limb of cord clip (1) by backing plate.
2. rigid hanger thrusting slip device according to claim 1, it is characterized in that: the work cord clip (2) of top and the clear distance of cord clip (1) are not less than hydraulic jack (3) shortest length and plate thickness sum, the work cord clip (2) of below and the clear distance of cord clip (1) are the design slippage of cord clip (1).
3. rigid hanger thrusting slip device according to claim 1 and 2, is characterized in that: the stroke of hydraulic jack (3) is greater than the design slippage of cord clip (1).
4., based on the gliding method of rigid hanger thrusting slip device according to claim 1, it is characterized in that, method step is as follows:
Step 1, under cable finish stage, first cord clip (1) is arranged on the main push-towing rope (4) directly over suspension rod guide pipe (8) center, to the preliminary pretightning force of cord clip (1) applying 25%-30%, then loads onto rigid hanger according to a conventional method;
Each on step 2, main push-towing rope above and below cord clip (1) an interim work cord clip (2) is installed, the work cord clip (2) of top is not less than hydraulic jack (3) shortest length and plate thickness sum with the clear distance of cord clip (1), the work cord clip (2) of below and the clear distance of cord clip (1) are the design slippage of cord clip (1), work cord clip (2) is applied to the fastening force of 100%, on main push-towing rope (4) between work cord clip (2) up and cord clip (1), symmetrical installation two hydraulic jacks (3);
Step 3, substep stretch-draw rigid hanger (7), along with the increase gradually of suspension rod power, the main push-towing rope (4) at suspension rod place is out of shape downwards, cord clip (1) is to the slowly movement of king-tower direction, until rigid hanger (7) lower end is offset to the edge of suspension rod guide pipe (8), now, the stretch-draw work of rigid hanger (7) is suspended;
Step 4, slowly along main push-towing rope (4), downward thrust is applied to cord clip (1) with hydraulic jack (3), make cord clip (1) slowly slippage downwards, until rigid hanger (7) deflection opposite side, but be as the criterion with the limit wall not contacting suspension rod guide pipe (8), now, pushing tow work is stopped;
Step 5, repetition above-mentioned steps 3 and step 4, back and forth carry out the stretch-draw work of rigid hanger (7), until 95% of the stretching force close design stretching force of rigid hanger (7) time, time downward pushing tow cord clip (1), when just making rigid hanger (7) keep vertical, namely stop pushing tow work, apply rigid hanger stretching force to 100% design load;
Step 6, simultaneously with some hydraulic fixing equipment, the high-strength bolt nut of cord clip (1) is designed to fastening force carry out minute wheel, symmetry, synchronously fastening by often taking turns 15%-20%, makes the fastening force of high-strength nut reach 100% of design load;
Work cord clip (2) above and below step 7, dismounting cord clip (1) and hydraulic jack (3).
5. the gliding method of rigid hanger thrusting slip device according to claim 4, is characterized in that: above-mentioned hydraulic fixing equipment adopts and is no less than 2N platform, wherein N >=2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310616131.8A CN103643636B (en) | 2013-11-27 | 2013-11-27 | A kind of rigid hanger thrusting slip device and gliding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310616131.8A CN103643636B (en) | 2013-11-27 | 2013-11-27 | A kind of rigid hanger thrusting slip device and gliding method thereof |
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| Publication Number | Publication Date |
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| CN103643636A CN103643636A (en) | 2014-03-19 |
| CN103643636B true CN103643636B (en) | 2015-12-09 |
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| CN201310616131.8A Expired - Fee Related CN103643636B (en) | 2013-11-27 | 2013-11-27 | A kind of rigid hanger thrusting slip device and gliding method thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938513A (en) * | 2017-12-31 | 2018-04-20 | 中交通力建设股份有限公司 | A kind of existing cord clip antisliding apparatus of flexible suspension bridge and method |
| CN110863431A (en) * | 2019-11-22 | 2020-03-06 | 中国十七冶集团有限公司 | Method for reinforcing steel guide cable pipe of suspension bridge suspender and improving installation precision |
| CN111487120B (en) * | 2020-05-04 | 2022-03-18 | 东南大学 | Anti-slip bearing capacity test system and method for bent inhaul cable and cable clamp assembly part |
| CN114518225B (en) * | 2022-02-21 | 2023-03-14 | 云南大学 | Rope clamp anti-sliding bearing capacity test device and method based on boom tensioning |
| CN114934441A (en) * | 2022-05-23 | 2022-08-23 | 保利长大工程有限公司 | Anti-slip temporary sling cable clamp structure |
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| JP2006125094A (en) * | 2004-10-29 | 2006-05-18 | Otaki Jack Kk | Push-in method and push-in device for hanging cable |
| CN200961239Y (en) * | 2006-09-09 | 2007-10-17 | 柳州欧维姆机械股份有限公司 | Rotary cable-stayed bridge cable clamp |
| EP1980667A2 (en) * | 2007-04-14 | 2008-10-15 | Dywidag-Systems International GmbH | Tension member for structures and method for its manufacture |
| CN102071651A (en) * | 2010-12-15 | 2011-05-25 | 江苏法尔胜新日制铁缆索有限公司 | Sling replacement method for suspension bridge |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5294739B2 (en) * | 2008-07-10 | 2013-09-18 | 新日鉄住金エンジニアリング株式会社 | Connecting bracket |
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2013
- 2013-11-27 CN CN201310616131.8A patent/CN103643636B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| JP2006125094A (en) * | 2004-10-29 | 2006-05-18 | Otaki Jack Kk | Push-in method and push-in device for hanging cable |
| CN200961239Y (en) * | 2006-09-09 | 2007-10-17 | 柳州欧维姆机械股份有限公司 | Rotary cable-stayed bridge cable clamp |
| EP1980667A2 (en) * | 2007-04-14 | 2008-10-15 | Dywidag-Systems International GmbH | Tension member for structures and method for its manufacture |
| CN102071651A (en) * | 2010-12-15 | 2011-05-25 | 江苏法尔胜新日制铁缆索有限公司 | Sling replacement method for suspension bridge |
Non-Patent Citations (1)
| Title |
|---|
| "国内最大跨径钢筋混凝土主梁自锚式悬索桥--永康市溪心桥施工控制";魏华等;《结构工程师》;20040630;第77-82页 * |
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| CN103643636A (en) | 2014-03-19 |
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Granted publication date: 20151209 |