CN103470093B - Concrete chimney dismantling method - Google Patents

Concrete chimney dismantling method Download PDF

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Publication number
CN103470093B
CN103470093B CN201310436264.7A CN201310436264A CN103470093B CN 103470093 B CN103470093 B CN 103470093B CN 201310436264 A CN201310436264 A CN 201310436264A CN 103470093 B CN103470093 B CN 103470093B
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anchor ear
concrete chimney
platform
chimney
interface
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CN103470093A (en
Inventor
吴长德
刘宗辉
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China 22MCC Group Corp Ltd
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China 22MCC Group Corp Ltd
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Abstract

The invention discloses a concrete chimney dismantling device. The concrete chimney dismantling device comprises a positioning mechanism, an operation platform and a hoisting mechanism; the positioning mechanism comprises a hoop, connectors and hanging lugs; the hoop is of a ring structure constructed by multiple segments of arc-shaped plates, one connector is arranged on the interface of each segment of arc-shaped plate, and multiple hanging lugs are uniformly arranged on the outer wall of the hoop; the operation platform comprises a trapezoidal platform, hooks and handrails, diagonal braces are arranged at the bottom of the trapezoidal platform, the hooks and the handrails are respectively and fixedly connected with the two sides of the trapezoidal platform, the handrails and the trapezoidal platform are arranged vertically, and the hooks are matched with the hanging lugs; the hoisting mechanism comprises a hoisting rope, a clamping apparatus and a hoisting tool, the hoisting rope is fixedly arranged on the hoop, the clamping apparatus is fixedly mounted on the side wall of a concrete chimney, and the hoisting rope, the clamping apparatus and the hoisting tool are used in a matched manner. The concrete chimney dismantling device has the advantages that the structure is simple, the dismantling device can be fabricated by waste material in a construction site, the cost is low, the dismantling device can be used repeatedly, and the waste of material is avoided; a dismantling method provided by the invention has the advantages that the method is simple, the operation is easy, the safety is high, buildings around the concrete chimney cannot be destroyed, and the working effect is good.

Description

Concrete chimney demolition method
Technical field
The present invention relates to detaching device and method that a kind of brick mixes type high-rise structures, specifically a kind of concrete chimney demolition device and method for dismounting.
Background technology
The tradition mode of removing that brick mixes type high-rise structures is that explosion or hit is hit, and this traditional dismounting mode is not only dangerous high, and destructive large, controls the bad breakage that just may cause other buildings once dynamics.
At present, mix type high-rise structures for brick and also can adopt interim mode of removing, but need to set up higher scaffold as operating platform, engineering quantity is large, and waste of material is serious, and this interim dismounting mode is applicable to square or cylindrical shape building more.And the dismounting difficulty of the high-rise structures of the cone such as chimney barrel structure is comparatively large, the especially dismounting of concrete chimney, conventional method for dismounting is long in time limit, inefficiency, can not meet construction progress.
Summary of the invention
The present invention be directed to the defect of traditional concrete chimney demolition mode in background technology, a detaching device that there is provided simple, the repeatedly used concrete chimney of a kind of structure, two are to provide the method for removing concrete chimney with this device.
The technical solution used in the present invention is: a kind of concrete chimney demolition device, comprises detent mechanism, operating platform and hoisting mechanism;
Described detent mechanism comprises anchor ear, connector and hangers; Anchor ear is the circular ring of multistage arc composition, and the interface of each section of arc is provided with connector, and anchor ear outer wall is evenly provided with multiple hangers;
Described operating platform comprises bucking ladder, hook and railing, and the bottom of bucking ladder is provided with diagonal brace, and hook and railing are fixed in the both sides of bucking ladder respectively, and railing is vertical with bucking ladder to be arranged, and hook and described hangers match;
Described hoisting mechanism comprises hoisting rope, jig and lifting device, and hoisting rope is fixed on anchor ear, and jig is fixedly mounted on concrete chimney jambs, hoisting rope, jig and lifting device with the use of.
Connector comprises the angle steel that two are fixed in anchor ear interface free end respectively, one side and anchor ear outer wall affixed, another side anchor ear outer wall is vertically vertical; Connect with stud between two angle steel.
Hangers is angle steel, one side and anchor ear outer wall affixed, another side and anchor ear outer wall are laterally vertical; The horizontal plane of hangers is also provided with and links up with the elongated hole matched.
Bucking ladder is trapezoid horizontal frame, is connected with leg-of-mutton diagonal brace bottom this bucking ladder, and vertical plane and the concrete chimney outer wall of diagonal brace are fitted.
Jig is welded by three angle steel, and two vertical angle steel and a horizontal corner steel weld together, and wherein a vertical angle steel is provided with perpendicular picking up the ears.
The railing upper beam two ends of bucking ladder are provided with preformed hole.
Remove the method for concrete chimney with described device, carry out according to following steps:
A, early-stage preparations
The dismounting order of a, concrete chimney is from top to bottom, first anchor ear minimum for diameter is well placed on ground, wherein the connector stud of an interface is tightened and is stayed 20mm gap, another interface is corresponding with concrete chimney climbing ladder position, and two free ends of interface are respectively arranged with the fastening rope linked together with euphroe; Arrange four halliards along anchor ear even circumferential to withhold;
B, select two suspension centres in the cat ladder both sides of concrete chimney top original platform, the pulley of each extension 0.5t, anchor ear is pulled to the position of 1.5m under original platform, constructor stands on cat ladder, utilize euphroe to be furthered by anchor ear interface, the connector of interface installs adjustable stay bolt and tightens;
C, first assemble operating platform on ground, constructor stands on cat ladder and to be lifted one by one by each operating platform put in place with realizing mounted pulley, hangs on the hangers of anchor ear, firm welding, install the hook on operating platform successively;
D, At The Height at operating platform upwards 500mm, around concrete chimney outer wall locking steel cable as safety rope, mounting strap is suspended in installing rope by constructor;
B, concrete chimney demolition
The above partial demolition of original platform: constructor stands on concrete chimney original platform, eight gap are made a call to downwards along concrete chimney circumference from top with pneumatic pick and gas cutting, gap is opened to the following position of original platform, and concrete chimney part more than original platform and original platform is all removed with the gentle block that cuts off into of pneumatic pick;
Bowl wall portion is removed:
A, continuing cutting downwards along gap, is 0.5m apart from anchor ear position location bottom gap;
B, below gap 200mm barrel on make a call to eight through holes along its circumference, wherein two through holes install a guide chain respectively, one end of guide chain is fixed on through hole, the other end is connected with the two ends of a movable rope respectively, this movable rope is laid in the barrel split on guide chain opposite, and two guide chains are strained simultaneously, makes barrel split stressed inside chimney, now cut in barrel split bottom transverse with pneumatic pick and gas cutting, namely this block barrel split falls down inside concrete chimney;
C, to remove other barrel split by identical method, after removing a whole circle, prefabricated jig is evenly hung on four opening positions, one end of four Chain blocks is connected with picking up the ears on jig, the other end is withheld with the halliard on anchor ear and is connected, adjustment Chain block chain length, realizes anchor ear and declines;
The barrel of d, concrete chimney removes a joint, needs anchor ear and operating platform to lower twice, and when the gap of anchor ear interface connector is more than 800mm, it is the arc of 0.8m that former anchor ear increases a joint length, connecting interface place connector and stud fastening; Successively decline in this way, realize the dismounting of concrete chimney wall part;
C, when above the bottom platform of tearing concrete chimney open, dismantle anchor ear and operating platform, stand on base platform and remove, and the method for dismounting of bottom platform is identical with the method for dismounting of original platform.
With the increase of barrel radius, change the short arc plate in anchor ear into long arc shape plate, connect with connector between each arc.
When anchor ear occurring the room being greater than 800mm, install an operating platform additional.
Compared with prior art, detaching device structure disclosed in this invention is simple, and the waste material of job site can be used to make, and cost is low, and can Reusability, avoids the waste of material; Method for dismounting disclosed in this invention is simple to operation, and safety is high, and can not break meeting surrounding building, working effect is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of hangers in the present invention.
Fig. 2 is anchor ear interface structural representation in the present invention.
Fig. 3 is anchor ear and hoisting rope installation site schematic diagram in the present invention.
Fig. 4 is bucking ladder structural representation in the present invention.
Fig. 5 is operating platform structural representation in the present invention.
Fig. 6 is detaching device mounting structure schematic diagram.
Fig. 7 is fixture structure schematic diagram in the present invention.
Fig. 8 is that in the present invention, chimney wall part-structure removes mode top view.
Fig. 9 is that in the present invention, chimney wall part-structure removes mode lateral view.
In figure: hangers 1, anchor ear 2, connector 3, stud 4, halliard withholds 5, fastening rope 6, bucking ladder 7, hook 8, diagonal brace 9, railing 10, preformed hole 11, chimney wall 12, safety rope 13, operating platform 14, cat ladder 15, gap 16, picks up the ears 17, bayonet socket 18,5t guide chain 19, movable rope 20, jig 21.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described.
The present invention one discloses a kind of concrete chimney demolition device, and two is disclose a kind of method utilizing this device to remove concrete chimney.
This detaching device comprises detent mechanism, operating platform and hoisting mechanism.
Detent mechanism comprises anchor ear 2, connector 3 and hangers 1.Anchor ear is the circular ring of multistage arc composition, and as shown in Figure 3, preferred initial hop count is two sections, and the interface of adjacent arc is provided with connector.Anchor ear outer wall is evenly provided with multiple hangers.In the present embodiment, as shown in Figure 2, connector comprises the angle steel that two are fixed in anchor ear interface free end respectively, one side and anchor ear outer wall affixed, another side is vertically vertical with anchor ear outer wall, and the side of two angle steel is oppositely arranged, and connects with stud 4 between two angle steel.As shown in Figure 1, hangers is also angle steel, one side and anchor ear outer wall affixed, another side and anchor ear outer wall are laterally vertical, and namely this side is horizontal plane, the horizontal plane of hangers is also provided with and links up with 8 elongated holes matched.
Anchor ear material is that 100 × 8 band steels of Q235 make 1 cover, link position stays the gap of about 20mm, according to the change of Diameter of chimney, make 6m, 4.8m, 3.2m, 2.4m, 1.6m, 0.8m (each anchor ear difference 0.8m respectively, equal the adjustable dimension of bolt, quantity specifications can adjust according to chimney height) each one section of anchor ear.According to the spacing of hangers on the size determination anchor ear of chain-wales, hangers, connector are full weld with welding of anchor ear.
Operating platform comprises bucking ladder 7, hook 8 and railing 10.The bottom of bucking ladder is provided with diagonal brace 9, and hook 8 is fixed in the relative both sides of bucking ladder 7 respectively with railing 10, and railing 10 is vertical with bucking ladder 7 to be arranged, and hook 8 matches with the elongated hole on described hangers.As shown in accompanying drawing 4-5, bucking ladder 7 is trapezoid horizontal frame, is connected with leg-of-mutton diagonal brace 9 bottom this bucking ladder, and the outer wall of the vertical plane of diagonal brace and the chimney wall 12 of concrete chimney is fitted.The railing 10 upper beam two ends of bucking ladder are provided with preformed hole 11.
Bucking ladder material is that the ∠ 40 × 4 of Q235 makes housing, and add one crossbeam in centre, band steel 7 road inlaying-30 × 3 above does base plate, does triangle inclined strut under bucking ladder, and diagonal brace material is that ∠ 50 × 5 angle steel of Q235 makes; Platform is connected with the hangers on anchor ear by the crotch made of two φ 18 round steel; Production quantity is determined according to the maximum gauge removing chimney.
Hoisting mechanism comprises hoisting rope, jig 21 and lifting device, and hoisting rope comprises safety rope 13 and movable rope 20, and hoisting rope is all connected with anchor ear, and jig 21 is fixedly mounted on the chimney wall of concrete chimney, hoisting rope, jig and lifting device with the use of.
Jig 21 is welded by three angle steel, and two vertical angle steel and a horizontal corner steel weld together, and wherein a vertical angle steel is provided with perpendicular picking up the ears and forms bayonet socket 18 between 17, two vertical angle steel.
The device of above-mentioned dismounting concrete chimney can Reusability, carries out conversion use according to the size of the external diameter of teared down and built building.
Remove concrete chimney with this device, carry out according to following steps:
A, early-stage preparations
Properly protect in 10m diameter range centered by chimney bottom, draw warning line, hang Sign Board, forbid non-constructor to enter; Clear up in place, for clearing vehicle and Hydraulic pick Che Teng road; Construction equipment is not put in the venue, avoid smashing.
A, concrete chimney dismounting order be from top to bottom, be first well placed on ground by anchor ear (two sections of namely initial anchor ears) minimum for diameter, wherein the connector stud of an interface is tightened and is stayed 20mm gap, make two sections of anchor ears can freely activity; Another interface is corresponding with the position of concrete chimney climbing ladder 15, and two free ends of interface are respectively arranged with the fastening rope 6 linked together with euphroe; Four halliards are set along anchor ear even circumferential and withhold 5.
B, select two reliable suspension centres in the cat ladder both sides of concrete chimney top original platform, the pulley of each extension 0.5t, anchor ear is pulled to the position of 1.5m under original platform, constructor stands on cat ladder, utilize euphroe to be furthered by anchor ear interface, the connector of interface is installed the stud of adjustable-length and tightens.
C, first assemble operating platform on ground, constructor stands on cat ladder and to be lifted one by one by each operating platform put in place with realizing mounted pulley, hangs on the hangers of anchor ear, firm welding, install the hook on operating platform successively.
D, At The Height at operating platform upwards 500mm, around the outer wall locking steel cable of the chimney wall of concrete chimney as safety rope, mounting strap is suspended in installing rope by constructor.
B, concrete chimney demolition
The above partial demolition of original platform:
Constructor stands on concrete chimney original platform, makes a call to eight gap 16 with pneumatic pick and gas cutting downwards along concrete chimney circumference from top, and gap 16 is opened to the following position of original platform, and concrete chimney part more than original platform and original platform is all removed with the gentle block that cuts off into of pneumatic pick.
Bowl wall portion is removed:
A, continuing cutting downwards along gap, is 0.5m apart from anchor ear position location bottom gap.
B, as Figure 8-9, below gap 200mm barrel on make a call to eight through holes along its circumference, wherein two through holes install a 5t guide chain 19 respectively, one end of guide chain 19 is fixed on through hole, the other end is connected with the two ends of a movable rope 20 respectively, this movable rope 20 is laid in the barrel split on guide chain opposite, two guide chains are strained simultaneously, make barrel split stressed inside chimney, now cut in barrel split bottom transverse with pneumatic pick and gas cutting, the degree of depth is about 40mm, and namely this block barrel split falls down inside concrete chimney.Guide chain will come loose automatically, then uses the same method and remove other split concrete block.Below being moved on to from above by lifting Chain block after dismounting, adjustment Chain block chain length, is advisable so that chain is not loose.The split concrete block size of barrel is considered by two kinds of situations, and more than 50 meters adopt 1.7m × 0.8m, and less than 50 meters adopt 1.7m × 1.4m, to reduce the vibrations that concret block freely lands.
C, to remove other barrel split by identical method, after removing a whole circle, the bayonet socket of four prefabricated jigs is stuck in opening position, one end of four Chain blocks 17 to be connected with picking up the ears on jig, the other end is withheld with the halliard on anchor ear and is connected, adjustment Chain block chain length, realizes anchor ear and declines; On chimney wall, the cut to lengthen of gap is at about 1.7m, and width control system is at 400mm.
The barrel of d, concrete chimney removes a joint, need anchor ear and operating platform to lower twice, when the gap of anchor ear interface connector is more than 800mm, it is the arc of 0.8m that former anchor ear increases a joint length, i.e. short anchor ear, connecting interface place connector and stud fastening; Successively decline in this way, realize the dismounting of concrete chimney wall part.
C, when above the bottom platform of tearing concrete chimney open, dismantle anchor ear and operating platform, stand on base platform and remove, and the method for dismounting of bottom platform is identical with the method for dismounting of original platform.
With the increase of barrel radius, change the short arc plate in anchor ear into long arc shape plate, connect with connector between each arc.
Platform successively declines in this approach, when anchor ear occurring the space being greater than 800mm, installs a chain-wales additional, after add platform and do not weld with anchor ear, bundle with steel wire; If anchor ear runs into cat ladder supporting leg during decline, first got up in cat ladder top and inner wall of stack reinforcement welding, then supporting leg is cut off; Anchor ear quantity controls within 3, constantly short anchor ear is changed growth anchor ear, until tear+11.5m rice height open along with radius increases.Operating platform of encorbelmenting after tearing+11.5m open is dismantled, and personnel move on to+10.0m platform and continue to remove.

Claims (3)

1. a concrete chimney demolition method, utilize concrete chimney demolition device to remove, detaching device comprises detent mechanism, operating platform and hoisting mechanism;
Described detent mechanism comprises anchor ear, connector and hangers; Anchor ear is the circular ring of multistage arc composition, and the interface of each section of arc is provided with connector, and anchor ear outer wall is evenly provided with multiple hangers;
Described operating platform comprises bucking ladder, hook and railing, and the bottom of bucking ladder is provided with diagonal brace, and hook and railing are fixed in the both sides of bucking ladder respectively, and railing is vertical with bucking ladder to be arranged, and hook and described hangers match;
Described hoisting mechanism comprises hoisting rope, jig and lifting device, and hoisting rope is fixed on anchor ear, and jig is fixedly mounted on concrete chimney jambs, hoisting rope, jig and lifting device with the use of;
Described connector comprises the angle steel that two are fixed in anchor ear interface free end respectively, one side and anchor ear outer wall affixed, another side is vertically vertical with anchor ear outer wall; Connect with stud between two angle steel;
Described hangers is angle steel, one side and anchor ear outer wall affixed, another side and anchor ear outer wall are laterally vertical; The horizontal plane of hangers is also provided with and links up with the elongated hole matched;
Described bucking ladder is trapezoid horizontal frame, is connected with leg-of-mutton diagonal brace bottom this bucking ladder, and vertical plane and the concrete chimney outer wall of diagonal brace are fitted;
Described jig is welded by three angle steel, and two vertical angle steel and a horizontal corner steel weld together, and wherein a vertical angle steel is provided with perpendicular picking up the ears;
The railing upper beam two ends of described bucking ladder are provided with preformed hole; It is characterized in that, utilize above-mentioned detaching device to remove concrete chimney and carry out according to following steps:
A, early-stage preparations
The dismounting order of a, concrete chimney is from top to bottom, first anchor ear minimum for diameter is well placed on ground, wherein the connector stud of an interface is tightened and is stayed 20mm gap, another interface is corresponding with concrete chimney climbing ladder position, and two free ends of interface are respectively arranged with the fastening rope linked together with euphroe; Arrange four halliards along anchor ear even circumferential to withhold;
B, select two suspension centres in the cat ladder both sides of concrete chimney top original platform, the pulley of each extension 0.5t, anchor ear is pulled to the position of 1.5m under original platform, constructor stands on cat ladder, utilize euphroe to be furthered by anchor ear interface, the connector of interface installs adjustable stay bolt and tightens;
C, first assemble operating platform on ground, constructor stands in each operating platform to lift with prior mounted pulley by cat ladder one by one and puts in place, hangs on the hangers of anchor ear, firm welding, install the hook on operating platform successively;
D, At The Height at operating platform upwards 500mm, around concrete chimney outer wall locking steel cable as safety rope, mounting strap is suspended in installing rope by constructor;
B, concrete chimney demolition
The above partial demolition of original platform: constructor stands on concrete chimney original platform, eight gap are made a call to downwards along concrete chimney circumference from top with pneumatic pick and gas cutting, gap is opened to the following position of original platform, and concrete chimney part more than original platform and original platform is all removed with the gentle block that cuts off into of pneumatic pick;
Bowl wall portion is removed:
A, continuing cutting downwards along gap, is 0.5m apart from anchor ear position location bottom gap;
B, below gap 200mm barrel on make a call to eight through holes along its circumference, wherein two through holes install a guide chain respectively, one end of guide chain is fixed on through hole, the other end is connected with the two ends of a movable rope respectively, this movable rope is laid in the barrel split on guide chain opposite, and two guide chains are strained simultaneously, makes barrel split stressed inside chimney, now cut in barrel split bottom transverse with pneumatic pick and gas cutting, namely this block barrel split falls down inside concrete chimney;
C, to remove other barrel split by identical method, after removing a whole circle, prefabricated jig is evenly hung on four opening positions, one end of four Chain blocks is connected with picking up the ears on jig, the other end is withheld with the halliard on anchor ear and is connected, adjustment Chain block chain length, realizes anchor ear and declines;
The barrel of d, concrete chimney removes a joint, needs anchor ear and operating platform to lower twice, and when the gap of anchor ear interface connector is more than 800mm, it is the arc of 0.8m that former anchor ear increases a joint length, connecting interface place connector and stud fastening; Successively decline in this way, realize the dismounting of concrete chimney wall part;
E, when above the bottom platform of tearing concrete chimney open, dismantle anchor ear and operating platform, stand on base platform and remove, and the method for dismounting of bottom platform is identical with the method for dismounting of original platform.
2. the method for dismounting concrete chimney according to claim 1, is characterized in that, with the increase of barrel radius, changes the short arc plate in anchor ear into long arc shape plate, connects between each arc with connector.
3. the method for dismounting concrete chimney according to claim 1, is characterized in that, when anchor ear occurring the room being greater than 800mm, installs an operating platform additional.
CN201310436264.7A 2013-09-24 2013-09-24 Concrete chimney dismantling method Active CN103470093B (en)

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Publication number Priority date Publication date Assignee Title
CN104278828B (en) * 2014-09-30 2016-08-24 北京首钢建设集团有限公司 A kind of concrete chimney dismantling operation platform
CN105129599B (en) * 2015-09-01 2018-04-17 中国电建集团山东电力建设第一工程有限公司 A kind of chimney glass reinforced plastic inner cylinder hydraulic pressure lift special hanger and its construction method
CN105715029A (en) * 2016-02-01 2016-06-29 重庆瑜煌电力设备制造有限公司 Anti-fall steel angle tower
CN106522581A (en) * 2016-12-04 2017-03-22 河南理工大学 Method for demolish chimney manually
CN109113369B (en) * 2018-10-04 2020-07-31 司风兵 Safe demolition method for manual demolition of cylindrical building
CN109505423A (en) * 2018-11-26 2019-03-22 五冶集团上海有限公司 A kind of concrete chimney method for dismounting and its application
CN110294439B (en) * 2019-06-19 2020-08-14 河南省工建集团有限责任公司 Attached lifting scaffold for high-altitude demolition and lifting method

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CN202039587U (en) * 2011-03-21 2011-11-16 苏州工业园区云白华鼎烟囱制造有限公司 Temporary platform for installing mating flange on steel chimney
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Application publication date: 20131225

Assignee: Chen Zhishun

Assignor: China MCC 22 Group Corp., Ltd.

Contract record no.: 2017990000110

Denomination of invention: Concrete chimney dismantling method

Granted publication date: 20150610

License type: Exclusive License

Record date: 20170405

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