CN101186273A - Method for lowering overweight structure by connecting two jacks in series - Google Patents
Method for lowering overweight structure by connecting two jacks in series Download PDFInfo
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- CN101186273A CN101186273A CNA2007101246329A CN200710124632A CN101186273A CN 101186273 A CN101186273 A CN 101186273A CN A2007101246329 A CNA2007101246329 A CN A2007101246329A CN 200710124632 A CN200710124632 A CN 200710124632A CN 101186273 A CN101186273 A CN 101186273A
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Abstract
The invention provides a construction method which can carry out the integration dropping-down of overweight structures such as movable formwork, etc. by adopting normal jack, steel strand, etc. The invention is characterized in that after the construction of box girder is implemented, two reaction frames are assembled on the bridge by bailey beam or section steel and the normal perforation jack is adopted to carry out the integration dropping-down of the movable formwork; two perforation jacks fixed on the reaction frame are connected in series to form a fulcrum power device; the two jacks alternatively transfer external force in order to implement continuous operation.
Description
Technical field
The present invention relates to a kind of ordinary jack that in bridge or high-lager building construction, adopts overweight structure is carried out the construction method that integral body is transferred.
Background technology
At present, for branch stride be 30 to 50m stride the footpath superstructure more and more adopt Prestressed Continuous Box Beam, employing mobile formwork (bridge fabrication machine) method is the most economical, quick when the superstructure construction of such bridge, and is easy to the construction quality of guard box beam.When especially construct in area, heavy mound on the mountain ridge, than a large amount of saving of traditional full framing method steel pipe support and template, accelerating construction progress to a great extent simultaneously, but since single build the box girder segment total weight and all act on the mobile formwork, therefore, it is huger that mould bases is made usually, dismantle in the high-altitude, difficulty is quite big, nor safety, please professional overweight structure integral body transfer operation company, then charge is very expensive.And transfer by all means, dismounting is still wanted oneself to finish, buy special use and transfer equipment, its price also is quite expensive, and commonality is not strong, frequency of utilization is not high, equally is relatively to waste yet, so we select to utilize self technical force rationally to utilize conventional weight-lifting equipment to realize that the integral body of overweight structures such as large-scale mobile formwork transfers.
Summary of the invention
The objective of the invention is in order to reduce the wasting of resources, realization mobile formwork heavy construction equipments such as (bridge fabrication machines) is dismantled on ground, and realization mould bases integral body safely and fast transfer to ground for convenience detach, and the construction method that provides a kind of realization large-tonnage structural entity that adopts auxiliary facilities such as ordinary jack and ground tackle, steel strand to transfer.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of method of lowering overweight structure by connecting two jacks in series, it is the method that a kind of mobile formwork is removed, its feature: after box girder construction is finished, earlier with shellfish thunder sheet or shaped steel assembly unit twice reaction frame on bridge, adopting conventional punching jack to carry out mobile formwork integral body transfers, form a suspension centre engine installation by two punching jack series connection that will be fixed on the reaction frame, two jacks alternately connect passs external force, realizes continuous working.
The described step that two punching jack series connection are formed a suspension centre engine installation is: the good reaction frame of determining in calculating of hoisting point position assembly unit is placed in punching jack machine work ground tackle on the jack base of reaction frame, longeron hoisting point position at mobile formwork installs the suspension centre anchor beam, steel strand are passed anchor plate and two coaxial jacks on the reaction frame of suspension centre anchor beam successively and the ground tackle and tighten up steel strand of working, treat that whole suspension centre weight-lifting equipments install, send oil for simultaneously each jack above the suspension centre place, make whole mobile formwork break away from original bracing or strutting arrangement, and remove former support system, unclamp the work anchor intermediate plate on the following jack simultaneously, and piston is pushed into range, give the jack oil return of each suspension centre top then simultaneously, mould bases begins to transfer.
Described two jacks alternately connect pass external force step be: when the jack piston stroke in top near zero the time; suspend oil return and the piston of the jack of bottom is pushed near range; and the work ground tackle anchoring that it is supporting is safe; continue to give the jack oil return of top then; the tension force of steel strand is transferred to following jack to be born; treat to unclamp when external force that the jack of top is born is all transferred to following jack the work ground tackle of top; and its piston is pushed into maximum travel position nearly, prepare to take over the following suffered external force of jack.The quantity of reaction frame, jack, steel strand and the position of suspension centre must be calculated according to actual lift heavy and be determined.
The present invention also can be applied to the transfer and the dismounting of the member in the high-lager building construction except being applicable to above-mentioned mobile formwork heavy construction equipments such as (bridge fabrication machines) in ground-surface dismounting.
The invention has the beneficial effects as follows, can utilize conventional jack and supporting light instrument, transfer the large-tonnage structure safely and fast.Save time and equipment, improved efficient.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is that mobile formwork integral body of the present invention is transferred general illustration.
Fig. 2 is the lateral plan of Fig. 1.
Attachment serial number among the figure: 1. reaction frame, 2. punching jack and work ground tackle, 3. steel strand, 4. suspension centre anchor beam, 5. mobile formwork.
The specific embodiment
In Fig. 1 and Fig. 2, it is that steel strand one end is anchored on the suspension centre with the extruding anchor, and the other end passes two punching jacks and work ground tackle simultaneously, alternately transmits external force by two jacks and realizes that overweight structure integral body such as mobile formwork transfers operation.The good reaction frame of determining in calculating of hoisting point position assembly unit (1) is placed in punching jack machine work ground tackle (2) on the jack base of reaction frame (1), longeron hoisting point position at mobile formwork (5) installs suspension centre anchor beam (4), steel strand (3) are passed anchor plate and two the coaxial jacks and the work ground tackles (2) on the reaction frame of suspension centre anchor beam (4) successively and tighten up steel strand (3), treat that whole suspension centre weight-lifting equipments install, send oil for simultaneously each jack (2) above the suspension centre place, make whole mobile formwork (5) break away from original bracing or strutting arrangement, and remove former support system.Unclamp the work anchor intermediate plate on the following jack (2) simultaneously; and piston is pushed into range; give jack (2) oil return of each suspension centre top then simultaneously; mould bases (5) begins to transfer; when the jack in top (2) piston stroke near zero the time; suspend oil return and the piston of the jack (2) of bottom is pushed near range; and the work ground tackle anchoring that it is supporting is safe; continue to give jack (2) oil return of top then, the tension force of steel strand is transferred to following jack (2) bear.Treat to unclamp the work ground tackle of top when external force that the jack (2) of top is born is all transferred to following jack (2), and its piston is pushed into maximum travel position nearly, prepare to take over the following suffered external force of jack.So alternately connect and pass, thereby realization mobile formwork integral body is transferred operation.
Claims (3)
1. the method for a lowering overweight structure by connecting two jacks in series, it is the method that a kind of mobile formwork is removed, it is characterized in that: after box girder construction is finished, earlier with shellfish thunder sheet or shaped steel assembly unit twice reaction frame on bridge, adopting conventional punching jack to carry out mobile formwork integral body transfers, form a suspension centre engine installation by two punching jack series connection that will be fixed on the reaction frame, two jacks alternately connect passs external force, realizes continuous working.
2. the method for lowering overweight structure by connecting two jacks in series according to claim 1, it is characterized in that: the step that two punching jack series connection are formed a suspension centre engine installation is: the good reaction frame of determining in calculating of hoisting point position assembly unit (1) is placed in punching jack machine work ground tackle (2) on the jack base of reaction frame (1), longeron hoisting point position at mobile formwork (5) installs suspension centre anchor beam (4), steel strand (3) are passed anchor plate and two the coaxial jacks and the work ground tackles (2) on the reaction frame of suspension centre anchor beam (4) successively and tighten up steel strand (3), treat that whole suspension centre weight-lifting equipments install, send oil for simultaneously each jack (2) above the suspension centre place, make whole mobile formwork (5) break away from original bracing or strutting arrangement, and remove former support system, unclamp the work anchor intermediate plate on the following jack (2) simultaneously, and piston is pushed into range, give jack (2) oil return of each suspension centre top then simultaneously, mould bases (5) begins to transfer.
3. the method for lowering overweight structure by connecting two jacks in series according to claim 1; it is characterized in that: two jacks alternately connect pass external force step be: when the jack in top (2) piston stroke near zero the time; suspend oil return and the piston of the jack (2) of bottom is pushed near range; and the work ground tackle anchoring that it is supporting is safe; continue to give jack (2) oil return of top then; the tension force of steel strand is transferred to following jack (2) to be born; treat to unclamp when external force that the jack (2) of top is born is all transferred to following jack (2) the work ground tackle of top; and its piston is pushed into maximum travel position nearly, prepare to take over the following suffered external force of jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101246329A CN100542944C (en) | 2007-11-22 | 2007-11-22 | The method of lowering overweight structure by connecting two jacks in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101246329A CN100542944C (en) | 2007-11-22 | 2007-11-22 | The method of lowering overweight structure by connecting two jacks in series |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101186273A true CN101186273A (en) | 2008-05-28 |
| CN100542944C CN100542944C (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101246329A Active CN100542944C (en) | 2007-11-22 | 2007-11-22 | The method of lowering overweight structure by connecting two jacks in series |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134833A (en) * | 2011-02-21 | 2011-07-27 | 中国一冶集团有限公司 | Construction method for hoisting and disassembling bailey truss |
| CN105366598A (en) * | 2015-09-28 | 2016-03-02 | 中国一冶集团有限公司 | Hydraulic lifting method for gas holder top |
| CN106758818A (en) * | 2016-11-17 | 2017-05-31 | 中国建筑第四工程局有限公司 | A kind of Bailey beam provision for disengagement |
| CN116605774A (en) * | 2023-07-17 | 2023-08-18 | 山东兴源机械有限公司 | Overhead bridge type overhead crane |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080357B (en) * | 2011-01-06 | 2012-08-29 | 中铁二十四局集团浙江工程有限公司 | Integrated beam-falling device and method for steel pipe pier bailey beam cast-in-place bracket |
-
2007
- 2007-11-22 CN CNB2007101246329A patent/CN100542944C/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134833A (en) * | 2011-02-21 | 2011-07-27 | 中国一冶集团有限公司 | Construction method for hoisting and disassembling bailey truss |
| CN102134833B (en) * | 2011-02-21 | 2012-09-05 | 中国一冶集团有限公司 | Construction method for hoisting and disassembling bailey truss |
| CN105366598A (en) * | 2015-09-28 | 2016-03-02 | 中国一冶集团有限公司 | Hydraulic lifting method for gas holder top |
| CN106758818A (en) * | 2016-11-17 | 2017-05-31 | 中国建筑第四工程局有限公司 | A kind of Bailey beam provision for disengagement |
| CN116605774A (en) * | 2023-07-17 | 2023-08-18 | 山东兴源机械有限公司 | Overhead bridge type overhead crane |
| CN116605774B (en) * | 2023-07-17 | 2023-10-20 | 山东兴源机械有限公司 | Overhead bridge type overhead crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100542944C (en) | 2009-09-23 |
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Address after: 530011 No. 17 Zhonghua Road, the Guangxi Zhuang Autonomous Region, Nanning Patentee after: Guangxi road and bridge engineering Group Co., Ltd Address before: 530011 No. 17 Zhonghua Road, the Guangxi Zhuang Autonomous Region, Nanning Patentee before: Guangxi Zhuang Nationality Autonomous Region Highway Bridge Engineering Company |