CN103233589B - Method for dismantling chimney by means of rope sawing and cutting method - Google Patents
Method for dismantling chimney by means of rope sawing and cutting method Download PDFInfo
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- CN103233589B CN103233589B CN201310158228.9A CN201310158228A CN103233589B CN 103233589 B CN103233589 B CN 103233589B CN 201310158228 A CN201310158228 A CN 201310158228A CN 103233589 B CN103233589 B CN 103233589B
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Abstract
The invention discloses a method for dismantling a chimney by means of a rope sawing and cutting method. The method comprises the following steps of (1) calibrating a collapse central line, an oriented collapse cut, an oriented window cut and a position of a reserved column; (2) drilling a penetrating hole and a central hole; (3) obtaining cut blocks from two sides of the reserved column in a cutting mode, using supporting members to support the upper portions and the lower portions of notches at the notch positions where the cut blocks are located, and using a positioning device to enable the supporting members and the chimney to be fixedly connected; (4) using the reserved column as the center and dismantling the supporting members; and (5) enabling the chimney to crush the reserved column and then topple and fall according to the preset direction after a last group of supporting members is dismantled. The high and large chimney can be dismantled by means of the method, explosion apparatuses are not used, and accordingly a history that the high and large chimney can not be dismantled without the explosion apparatuses in out country is ended. Due to the fact that all of workers, mechanical devices and the like are outside of a safe distance when the chimney collapses, the safety can be ensured.
Description
Technical field
The present invention relates to a kind of method of removing chimney, be specifically related to a kind of method without explosive and dismountable chimney.
Background technology
The building this kind of thin and high to chimney, want to enable it collapse according to the direction that people are predetermined, the method taked both at home and abroad at present produces a blasting cut by the method for explosion on the position that the bottom (or middle) of chimney is symmetrical in the predetermined both sides of falling center line, incision length is greater than 1/2 of chimney bottom outer perimeter, is generally the 3/5-2/3 of bottom outer perimeter.Like this, after blasting cut is formed, the chimney barrel on otch top will be unsettled because losing support, and the center of gravity of chimney outwards will produce skew.At this moment, chimney outwards will offset and unstability because of center of gravity, and under the effect of its gravity load, produce a directioning falling moment of flexure, chimney produces Directional Collapse under the effect of directioning falling moment of flexure.
Blasting vibration and blasting flyrock is easily caused to cause damage to surrounding personnel etc. when explosion method explosion, the explosive simultaneously must used is national restricted articles, need through a lot of examination & approval, examination formality, process is loaded down with trivial details, in the process deposited and transport for long-distance, also there is larger potential safety hazard in explosive.
Summary of the invention
Time the technical problem to be solved in the present invention is explosion method dismounting chimney, danger coefficient is large, examination and approval procedures are loaded down with trivial details, provides a kind of rope saw patterning method to remove the method for chimney, does not need to use explosive, can reduce or remit examination and approval procedures, reduce potential safety hazard in demolishing process.
Technical scheme of the present invention realizes in the following manner: a kind of rope saw patterning method removes the method for chimney, carries out according to following step:
(1) on chimney, calibrate the position of the center line that collapses, Directional Collapse otch, Directional Window otch, reserved column, the overall length of Directional Collapse otch is 3/5 ~ 2/3 of chimney bottom outer perimeter;
(2) drill open-work and centre bore in the corner of cutting cube and center, the summit of Directional Window otch also drills open-work;
(3) from reserved column both sides, cutting cube is cut out with rope saw along Directional Collapse otch, upper and lower with support member support notch at the notch place at cutting cube place, and with positioner, supporting member and chimney are fixedly linked;
(4) centered by reserved column, symmetrical removes supporting member from the right and left;
(5) remove supporting member, after when last group, supporting member removed, reserved column has damaged by pressure by chimney, after funnel topple over according to presetting direction.
The supporting member used in described step (3) is cut next cutting cube, cutting cube supports notch in the following manner: at central hole fixed band huckbolt, the edge, both sides of Directional Collapse otch and lower edge is first cut when cutting, cut rear iron sheet edge under cutting cube is wrapped, upper steel plate bar is padded between edge under cutting cube and notch, cut edge on Directional Collapse otch afterwards, with iron sheet, cutting cube upper end is wrapped, cutting cube and notch pad upper steel plate bar between edge, and with positioner, cutting cube upper end and chimney is fixedly linked.
The supporting member used in described step (3) comprises cover plate, base plate, is provided with tube connector between cover plate and base plate, and tube connector is provided with and links plate.
The positioner used in described step (3) comprises supporting plate, the frid be connected with supporting plate and clamp, and frid center line is provided with draw-in groove, and the edge of frid is provided with symmetrical bayonet socket.
Relative to blasting procedure, the present invention has following advantage:
(1) need not explode equipment and adopt the rope sawing method of cutting to remove tall and big chimney, thus just can not remove the history of chimney stalk safely at China's equipment that finishes not explode, start the New Times not having explosives and detonators in the same old way can remove chimney stalk safely;
(2) can avoid in the area had as removing chimney stalk and blast equipment of transporting for long-distance, and long-distance transport blast equipment is easily blasted accident;
(3) a lot of examination & approval, examination formality can be exempted, thus greatly reduce the cost removing the building such as chimney stalk;
(4) concussion of blasting caused owing to adopting blasting method to remove chimney etc. and blasting flyrock is avoided to the infringement of surrounding personnel, equipment, building etc.;
(5) due to all personnel, plant equipment etc. when chimney collapses all outside safe distance, thus can guarantee safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of chimney to be removed.
Fig. 2 is that Directional Collapse otch along the circumferential direction launches rear view.
Fig. 3 is hook bolt installment state schematic diagram.
Fig. 4 is positioning device structure schematic diagram.
Fig. 5 is the schematic top plan view of Fig. 4.
Fig. 6 is clamp structures schematic diagram.
Fig. 7 is supporting member structural representation in embodiment 2.
Fig. 8 is that the A-A of Fig. 7 is to sectional view.
Fig. 9 is positioner using state schematic diagram.
Wherein, 1. collapse center line, 2. reserved column, 3. Directional Collapse otch, 4. Directional Window otch, 5. cutting cube, 6. through hole, 7. centre bore, 8. hook bolt, 10. cover plate, 11. link plate, 12. tube connectors, 13. base plates, 14. supporting plates, 15. frids, 16. bayonet sockets, 17. draw-in grooves, 18. clamps, 20. chimneys, 21. nuts, 22. billets, 23. gads.
Detailed description of the invention
Embodiment 1: as depicted in figs. 1 and 2, the method for dismounting described in the present embodiment, carries out according to following step:
(1) on chimney 20, the position of the center line 1 that collapses, Directional Collapse otch 3, cutting cube 5, Directional Window otch 4, reserved column 2 is calibrated with red paint, the overall length of Directional Collapse otch 3 is less than 3/5 ~ 2/3 of chimney bottom outer perimeter, and wherein A is to being 0.5 ~ 0.6 m for chimney toppling direction Directional Collapse otch 3 apart from the distance on ground.
(2) adopt air drill to drill open-work 6 and centre bore 7 in the corner of Directional Collapse otch 3 and center, the summit of Directional Window otch 4 also drills open-work 6.
(3) as described in Fig. 3 institute, at centre bore 7 place fixed band huckbolt 8, hook bolt 8 is fixed on centre bore 7 place by nut 21 and billet 22.
(4) from reserved column 2 both sides, by rope saw through through hole 6, cutting cube 5 is cut out afterwards with the Directional Collapse otch 3 that rope saw identifies along red paint, upper and lower with support member support notch at the notch place at cutting cube 5 place, and with positioner, supporting member and chimney are fixedly linked; Long about the 1m of cutting cube 5, high about 2m.
Supporting member described in the present embodiment is cut next cutting cube 5, cutting cube 5 supports notch in the following manner: first cut the edge, both sides of Directional Collapse otch 3 and lower edge when cutting, cut rear iron sheet cutting cube 5 times edges are wrapped, upper steel plate bar is padded between edge under cutting cube 5 and notch, cut edge on Directional Collapse otch 3 afterwards, with iron sheet, edge on cutting cube 5 is wrapped, cutting cube 5 and notch pad upper steel plate bar between edge, if also have space between cutting cube 5 upper end and chimney, seam internal fixtion should be squeezed into from chimney lateral tight with steel plate wedge, the depth of drive of steel plate wedge is no less than 200mm, and with positioner, cutting cube 5 upper end and chimney are fixedly linked.Steel plate strip can reduce frictional force when removing cutting cube, the both sides, front and back of steel plate strip wide go out cutting cube 50mm.
(5) centered by reserved column 2, symmetrical from the right and left, respectively cut out a cutting cube with rope saw at every turn, and fix according to step (3) mode, until all to have cut and fixing, pull hook bolt 8 afterwards, dismounting cutting cube.
When removing cutting cube, wire rope one is fastened on cutting cube center hook bolt 8, other end is fastened and is swung on the crawler-mounted excavator in 90 degree of directions with chimney beyond tens meters far away standing in, first pull down locator, be pulled outwardly with two, both sides excavator more simultaneously, can easily first group, left and right cutting cube be removed.As long as grasped before last group cutting cube of dismounting, ensure that the Directional Collapse incision length of the chimney removed out is less than 45% of chimney bottom outer perimeter, chimney would not collapse in advance.Like this until all cutting cubes have all been removed.
(6) after last group supporting member has been removed, reserved column 2 damages by pressure by chimney, and chimney is slowly toppled over according to presetting direction.
When last group supporting member, after dismounting completes, in chimney Directional Collapse otch, just only the reserved column of remaining centerline of collapsing carries the gravity load of the unsettled cylindrical shell in chimney Directional Collapse otch top, exceed 1/2 of chimney gross weight, the dimensions pressure bar stabilization principle design of this column is determined.The time column approximately passing through about 1 minute is damaged by pressure, and chimney slowly will be toppled over according to the collapse direction designed, and the deviation of collapse direction can be controlled within 5 degree, is advanced international level.
In order to fall down to the ground impact shock the extruding slungshot produced caused after preventing chimney Directional Collapse is to the harm of surrounding personnel, equipment, building, security protection and vigilance task should be carried out according to the comprehensive safety protecting scheme of the good dismounting chimney of design construction in advance, guarantee safety when chimney collapses.
In the present embodiment, because the supporting member used is the cutting cube just cut down, as you were, just direct as supporting member after slightly dealing with, not only save a large amount of backing material, and this design science is reasonable, be skillfully constructed, saving of work and time, reduces costs, and is a scientific and reasonable design.
As shown in Fig. 4,5 and 6, the positioner used in described step (3) comprises supporting plate 14, the frid 15 be connected with supporting plate 14 and clamp 18, and frid 15 center line is provided with draw-in groove 17, and the edge of frid 15 is provided with symmetrical bayonet socket 16.As shown in Figure 9, time positioner uses, frid 15 is stuck between cutting cube and chimney, is stuck in by clamp 18 afterwards in the bayonet socket of frid 15, if also have space between clamp and cutting cube, so in space, inserts gad 23.
Embodiment 2: the supporting member that in the present embodiment, step (3) is used comprises cover plate 10, base plate 13, is provided with tube connector 12 between cover plate 10 and base plate 13, tube connector 12 is provided with and links plate 11.Its detailed description of the invention is as follows:
1. from reserved steel bar concrete reserves column 2 both sides, cut out an each side cutting cube with rope saw, directly cutting cube pull-out is smashed with hydraulic breaker (or gun carriage).Left and right respectively cuts out one piece of cutting cube again, then with hydraulic breaker directly by broken for its pull-out.At this moment, reserved column both sides have just respectively split out a wide about 2.4m, the cutting groove of high about 2m comes, in the good steel plate strip of cutting groove lower end pad, padding nickelclad bar can reduce the frictional force when removing combined steel pipe support, cutting groove is put into respectively from each side pitching a combined steel pipe support with fork truck, again with steel plate strip by the gap place pad between combined steel pipe rack plate and top cylindrical shell well, if top also has gap, it is tight that using steel plate wedge squeezes into seam internal fixtion outside chimney, and steel plate wedge depth of drive is no less than 200 millimeters.Like this, just the cutting groove top chimney barrel supporting of this part has been got well with combined steel pipe support.
2. like this centered by reserved column, saw symmetrically towards the right and left, after tearing two cutting cubes open, steel plate strip has been padded in cutting groove, with fork truck, two combined steel pipe supports are put into respectively the cutting groove on both sides immediately, and as stated above fixing tight, handle well, until all cut, supporting is good.In order to prevent combined steel pipe support from misplacing when pressurized, with steel pipe, two of correspondence combined steel pipe supports can be fixed in chimney.
Cutting cube in Directional Window otch 4 directly pulls out dismounting, does not need supporting in otch.
3, all perform in integrated protection work, after security vigilance task all puts in place, just can start to remove combined steel pipe support.
During dismounting centered by reserved column, remove combined steel pipe support from the right and left symmetrically, once one simultaneously.During dismounting by wire rope bolt on two steel pipes of combined steel pipe support, other end is fastened on the crawler-mounted excavator beyond tens meters, the steel plate wedge squeezed into is played work, after fixing steel pipe in chimney is removed, two, both sides excavator is pulled outwardly simultaneously, can easily by the combined steel pipe support pull-out of two, left and right.
As long as grasped before dismounting latter two combined steel pipe support (one on one side, left and right), ensure that the Directional Collapse incision length of the chimney removed out is less than 45% of chimney bottom outer perimeter, chimney would not collapse in advance.Like this until by complete for all combined steel pipe support removing, in chimney Directional Collapse otch, just only remaining reserved column carries the gravity load of the unsettled cylindrical shell in Directional Collapse otch top, after approximately passing through the time delay of more than 1 minute, reserved column is damaged by pressure, chimney can according to the direction Directional Collapse designed, the deviation of swinging to can be controlled within 5 degree, is domestic advanced level.
Other construction methods of the present embodiment are with embodiment 1.
If in Demolition Construction, find that chimney barrel year is aging for a long time, steel bar concrete cylindrical shell compressive strength declines, and when cutting cube can not build as the temporary lining of chimney, can adopt the support pattern of the present embodiment.
Claims (4)
1. remove the method for chimney with rope saw patterning method, it is characterized in that carrying out according to following step:
(1) on chimney (20), calibrate the position of the center line that collapses (1), Directional Collapse otch (3), Directional Window otch (4), reserved column (2), the overall length of Directional Collapse otch (3) is 3/5 ~ 2/3 of chimney bottom outer perimeter;
(2) drill open-work (6) and centre bore (7) in the corner of cutting cube (5) and center, the summit of Directional Window otch (4) also drills open-work (6);
(3) from reserved column (2) both sides, cutting cube (5) is cut out with rope saw along Directional Collapse otch (3), upper and lower with support member support notch at the notch place at cutting cube (5) place, and with positioner, supporting member and chimney are fixedly linked;
(4) centered by reserved column (2), symmetrical removes supporting member from the right and left;
(5) remove supporting member, after when last group, supporting member removed, chimney will have been reserved column (2) and damage by pressure, after funnel topple over according to presetting direction.
2. rope saw patterning method according to claim 1 removes the method for chimney, it is characterized in that the supporting member used in described step (3) is cut next cutting cube (5), cutting cube (5) supports notch in the following manner: at centre bore (7) place fixed band huckbolt (8), the edge, both sides of Directional Collapse otch (3) and lower edge is first cut when cutting, cut rear iron sheet edge under cutting cube (5) is wrapped, upper steel plate bar is padded between edge under cutting cube (5) and notch, cut the upper edge of Directional Collapse otch (3) afterwards, with iron sheet, cutting cube (5) upper end is wrapped, cutting cube (5) and notch pad upper steel plate bar between edge, and with positioner, cutting cube (5) upper end and chimney are fixedly linked.
3. rope saw patterning method according to claim 1 removes the method for chimney, it is characterized in that the supporting member used in described step (3) comprises cover plate (10), base plate (13), be provided with tube connector (12) between cover plate (10) and base plate (13), tube connector (12) is provided with and links plate (11).
4. according to the method for removing chimney with rope saw patterning method one of claim 1 ~ 3 Suo Shu, it is characterized in that: the positioner used in described step (3) comprises supporting plate (14), the frid (15) be connected with supporting plate (14) and clamp (18), frid (15) center line is provided with draw-in groove (17), and the edge of frid (15) is provided with symmetrical bayonet socket (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310158228.9A CN103233589B (en) | 2013-05-02 | 2013-05-02 | Method for dismantling chimney by means of rope sawing and cutting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310158228.9A CN103233589B (en) | 2013-05-02 | 2013-05-02 | Method for dismantling chimney by means of rope sawing and cutting method |
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| CN103233589A CN103233589A (en) | 2013-08-07 |
| CN103233589B true CN103233589B (en) | 2015-04-15 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018189852A1 (en) * | 2017-04-13 | 2018-10-18 | ベステラ株式会社 | Method for toppling tower building in which base is used |
| CN107882356A (en) * | 2017-11-09 | 2018-04-06 | 河南理工大学 | A kind of mechanical removal construction method of cooling tower |
| CN108981509A (en) * | 2018-07-24 | 2018-12-11 | 浙江利化爆破工程股份有限公司 | The blasting demolishing method of Brick-structural Chimney under a kind of complex environment |
| CN109136434A (en) * | 2018-10-23 | 2019-01-04 | 中国十九冶集团有限公司 | The method that blast furnace directioning falling formula removes furnace body opening |
| CN109266799A (en) * | 2018-10-23 | 2019-01-25 | 中国十九冶集团有限公司 | The method that blast furnace tape frame directioning falling formula is removed |
| CN110206378A (en) * | 2019-06-21 | 2019-09-06 | 五冶集团上海有限公司 | Chimney overall pulling down construction method |
| CN111173312B (en) * | 2019-12-31 | 2020-10-23 | 哈尔滨理工大学 | Method for heating-cooling demolition of high-rise brick structure |
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| CN101768926A (en) * | 2009-12-29 | 2010-07-07 | 中铁隧道集团有限公司 | Diamond rope saw static force cutting method |
| CN102679826A (en) * | 2012-03-27 | 2012-09-19 | 中钢集团武汉安全环保研究院有限公司 | Method for precisely excavating directional window on high and large concrete chimney |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256031A (en) * | 1992-12-15 | 1993-10-05 | Daimoshiya:Kk | Cutting and demolishing device for reinforced concrete structure |
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| CN101768926A (en) * | 2009-12-29 | 2010-07-07 | 中铁隧道集团有限公司 | Diamond rope saw static force cutting method |
| CN102679826A (en) * | 2012-03-27 | 2012-09-19 | 中钢集团武汉安全环保研究院有限公司 | Method for precisely excavating directional window on high and large concrete chimney |
Non-Patent Citations (1)
| Title |
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| 曹启坤,侯丽娜.钢筋混凝土烟囱拆除切口中脊高度的计算.《爆破》.2012,第29卷(第1期), * |
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