CN109356170A - A kind of foundation pit supporting removal construction method - Google Patents
A kind of foundation pit supporting removal construction method Download PDFInfo
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- CN109356170A CN109356170A CN201811471964.9A CN201811471964A CN109356170A CN 109356170 A CN109356170 A CN 109356170A CN 201811471964 A CN201811471964 A CN 201811471964A CN 109356170 A CN109356170 A CN 109356170A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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Abstract
The present invention relates to technical field of building construction, in particular a kind of foundation pit supporting removal construction method, including starting electric motor, driving wheel, which is adjusted, by control panel promotes tension, guarantee that diamond-wire is suitably tightened, supply recirculated cooling water, restart another electric motor, driving driving wheel drives diamond-wire to recover a turn cutting, the stability of necessary close observation base in cutting process, the offset of directive wheel is adjusted at any time, to ensure to cut rope in the same plane, incorporation engineering environment and engineering characteristic of the present invention, to realize safety, it is economical, speed is fast, noise is small, the target of environmental protection, under the premise of ensuring not influence structure itself and surrounding enviroment, select the mute cutting of concrete to meet construction requirement.Diamond Buddha's warrior attendant chain cutting technique is a kind of environmentally protective new process, and speed of application is fast, shockproof, noiseless, is the trend for modernizing Demolition Construction.
Description
Technical field
The present invention relates to technical field of building construction, specially a kind of foundation pit supporting removal construction method.
Background technique
With the quickening of the process of urbanization, deep basal pit is more and more, and the safety of foundation pit is more and more important, foundation pit support
Dismounting is the most important thing of deep pit monitor.The method for dismounting of support generally has artificial, mechanical and explosion method for dismounting, respectively
The method pros and cons of kind are each has something to recommend him, but foundation pit in the prior art dismounting mode speed of application is less desirable, it is difficult to meet
The needs of fast pace construction, and vibration and noise are larger, cause adverse effect to neighbouring resident.
Summary of the invention
The purpose of the present invention is to provide a kind of foundation pit supporting removal construction methods, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme:
A kind of foundation pit supporting removal construction method, includes the following steps:
Step 1: after supporting beam upper reinforcement is cut off, mitigate the carrying of scaffold in support two main reinforcements of side indwelling
Scaffold support is set up with steel pipe in power, supporting beam lower section, and upright bar is arranged by well word when shelf is set up, and upright bar spacing is controlled in 1.2m
Within, 1m is not more than between row, the spacing of horizon bar is not more than 0.9m, and the cross bar as support is connected firmly with upright bar, no less than
For the stability for increasing scaffold bridging must also be arranged, in addition to horizon bar to prevent upright bar from directly standing on concrete table in two o'clock
Stress undue concentration concrete damage in face is padded one block of steel plate in bottom of upright rod thus or is padded with 12a channel steel；
Step 2: sawing main foot prop and auxiliary stand with M16 anchor bolt fixed rope, and directive wheel installation has to stablize, and take turns
Edge has to be aligned with the center line of lacing hole, to ensure that effective cutting speed of cut surface, strict implement installation accuracy are wanted
It asks；
Step 3；Diamond rope is wrapped in driving wheel and auxiliary in sequence according to fixed cutting form
On wheel, notice that the direction of rope should be consistent with driving wheel driving direction；
Step 4: according to field condition, the connection of the associated pipes such as water, electricity, mechanical equipment should correct specification, opposite collection
In, cabling puts strict implement safety regulation for operations, and it is more to prevent machine, people is more, ancillary equipment, material are disorderly put, left about, it causes the accident
Hidden danger in rope cutting process, centainly blocks protection with security protection before the direction of rope movement, and set within a certain area
Safety sign, to prompt pedestrian not enter construction operation area；
Step 5: starting electric motor adjusts driving wheel by control panel and promotes tension, guarantees that diamond-wire is suitably taut
Tightly, recirculated cooling water is supplied, another electric motor is restarted, driving driving wheel drives diamond-wire to recover a turn cutting, cutting
The stability of necessary close observation base in the process, adjusts the offset of directive wheel at any time, to ensure to cut rope in approximately the same plane
It is interior；
Step 6: it reasonably selects truck crane and carries out lifting operation.
As a preference of the present invention, the lifting operation of the step 6 includes following operation:
(1) crane lifting position selects hard ground, and should should be laid with pillow under crane support leg as far as possible far from margin of foundation pit
Wood and steel plate are checked by full-time Security Officer and approve that rear can be carried out lifting operation, and it is comprehensively careful to carry out before lifting
It checks and verifies work, check that equipment installation reference label, rhumb line mark whether that correctly checking whether the lifting lug of equipment meets hangs
Reload request；
(2) must not should be noted that when luffing beyond safe elevation angle area, stopping movement when downward luffing must be steady, and band, which carries, to be become
When width, to keep hanging object at a distance from crane arm；Crane arm is by can be reduced hoisting moment when the luffing raising of horizontal position
Safety, crane arm band, which is carried, topples over luffing to horizontal position and will increase hoisting moment, there is the danger tumbled；
(3) should be noted that when cantilever crane stretches out prevents from selecting as far as possible on the basis of guaranteeing need of work beyond torque limitation range
Implement hoisting operation with shorter brachium；Under normal circumstances, it tries not with telescopic jib is carried, because can add with telescopic jib is carried
The abrasion of sliding block between acute cantilever crane, greatly shortens the service life of sliding block, it is necessary to when band carries flexible, abide by lifting capacity and work width
The regulation of degree, to avoid overloading or tumbling；Manipulate lifting mechanism while boom frame telescopic, pay attention to keep suspension hook safety away from
From, prevent hoist rope occur pulleying；For the crane of synchronization telescope, when the stroke of previous joint arm frame is longer than latter joint arm
It is considered as unsafe condition when frame, it is necessary to be corrected and be overhauled；The crane to stretch for program, it is necessary to by regulation programmed
Flexible can be just opened afterwards；
(4) strictly to accomplish " ten do not hang " when playing lift operations；
(5) when turning round operation, it should be noted that observation vehicle frame and turntable tail portion the radius of gyration in whether someone or barrier；
Whether overhead transmission line or other barrier are had in the running space of cantilever crane, and when turning round operation, the loudspeaker that should ring first are warned, and are then solved
Except the braking or locking of swing mechanism, smoothly operating stick is turned round in manipulation；Rotational speed slowly must not rambunctiously should use throttle
Accelerate, accelerates that load vibration can occur suddenly, it is breakneck for expanding working radius；When tentatively hang object slowly stops back
Turn, avoids braking suddenly and lifted weight object being made to generate swing, forbid to carry out revolution operation in the case where weight has swing state, lifted weight
Object does not leave completely and must not carry out in face of ground；Revolution operation, in the same working cycles, revolution operation should be operated in telescopic arm
It is carried out with before luffing operation, when lifting by crane heavy objects revolution, traction drawstring can be fastened in hanging object two sides, to prevent
Hanging object is swung, and when engine stops suddenly, to lift convolution brake bar, locking revolution lock, crane has to lock when not used
Revolution lock, lifts rotary braking, buckles brake.
As a preference of the present invention, surveyor will be responsible for carrying out the displacement deformation monitoring of foundation pit while removing support,
Guarantee to monitor daily in demolishing process, monitoring data be reported in time, foundation pit deformation is excessive when such as supporting removal, should stop immediately
It only removes and takes necessary emergency measure.
As a preference of the present invention, the steel plate of described step one kind is the steel plate of 150 × 150 × 10mm.
As a preference of the present invention, should also be according to used crane between the step 1 and the step 2
Amount is determined section length.
As a preference of the present invention, the selection of the step 5 cutting parameter is as follows: passing through operation control in cutting process
Disk adjusts cutting parameter, it is ensured that diamond-wire operating linear velocity should ensure that enough in 20m/s or so, another aspect cutting process
Flushing fluid, to guarantee cooling to diamond-wire, and the break flour that grinding is got off is taken away.Cutting operation accomplishes that speed is steady
Fixed, parameter stability, equipment are stablized.
As a preference of the present invention, the content of " ten do not hang " are as follows:
(1) signal command is unknown is not allowed to hang；
(2) it tiltedly leads tiltedly to hang and is not allowed to hang；
(3) hanging object weight unknown or excess load are not allowed to hang；
(4) scattered object is tied up loosely or material puts overfill and is not allowed to hang；
(5) someone is not allowed to hang in hanging object；
(6) underground object is embedded in be not allowed to hang；
(7) safety device failure or it is not allowed to hang in spite of illness；
(8) live light darkness does not see hanging object landing point and is not allowed to hang；
(9) rib sword object directly contacts unprotect measure with wirerope and is not allowed to hang；
(10) six grades or more high wind are not allowed to hang.
As a preference of the present invention, the steel pipe in the step 1 is 48 × 3.0mm of φ steel pipe.
Compared with prior art, the beneficial effects of the present invention are: incorporation engineering environment of the present invention and engineering characteristic, to realize
The target that safety, economy, speed are fast, noise is small, environmentally friendly, under the premise of ensuring not influence structure itself and surrounding enviroment, choosing
The mute cutting of concrete is selected to meet construction requirement.Diamond Buddha's warrior attendant chain cutting technique is a kind of environmentally protective new process, construction
Speed is fast, shockproof, noiseless, is the trend for modernizing Demolition Construction.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Technical solution provided by the invention:
Embodiment 1
A kind of foundation pit supporting removal construction method, includes the following steps:
Step 1: after supporting beam upper reinforcement is cut off, mitigate the carrying of scaffold in support two main reinforcements of side indwelling
Scaffold support is set up with steel pipe in power, supporting beam lower section, and upright bar is arranged by well word when shelf is set up, and upright bar spacing is controlled in 1.2m
Within, 1m is not more than between row, the spacing of horizon bar is not more than 0.9m, and the cross bar as support is connected firmly with upright bar, no less than
For the stability for increasing scaffold bridging must also be arranged, in addition to horizon bar to prevent upright bar from directly standing on concrete table in two o'clock
Stress undue concentration concrete damage in face is padded one block of steel plate in bottom of upright rod thus or is padded with 12a channel steel；
Step 2: sawing main foot prop and auxiliary stand with M16 anchor bolt fixed rope, and directive wheel installation has to stablize, and take turns
Edge has to be aligned with the center line of lacing hole, to ensure that effective cutting speed of cut surface, strict implement installation accuracy are wanted
It asks；
Step 3；Diamond rope is wrapped in driving wheel and auxiliary in sequence according to fixed cutting form
On wheel, notice that the direction of rope should be consistent with driving wheel driving direction；
Step 4: according to field condition, the connection of the associated pipes such as water, electricity, mechanical equipment should correct specification, opposite collection
In, cabling puts strict implement safety regulation for operations, and it is more to prevent machine, people is more, ancillary equipment, material are disorderly put, left about, it causes the accident
Hidden danger in rope cutting process, centainly blocks protection with security protection before the direction of rope movement, and set within a certain area
Safety sign, to prompt pedestrian not enter construction operation area；
Step 5: starting electric motor adjusts driving wheel by control panel and promotes tension, guarantees that diamond-wire is suitably taut
Tightly, recirculated cooling water is supplied, another electric motor is restarted, driving driving wheel drives diamond-wire to recover a turn cutting, cutting
The stability of necessary close observation base in the process, adjusts the offset of directive wheel at any time, to ensure to cut rope in approximately the same plane
It is interior；
Step 6: it reasonably selects truck crane and carries out lifting operation.
In the present embodiment, the lifting operation of step 6 includes following operation:
(1) crane lifting position selects hard ground, and should should be laid with pillow under crane support leg as far as possible far from margin of foundation pit
Wood and steel plate are checked by full-time Security Officer and approve that rear can be carried out lifting operation, and it is comprehensively careful to carry out before lifting
It checks and verifies work, check that equipment installation reference label, rhumb line mark whether that correctly checking whether the lifting lug of equipment meets hangs
Reload request；
(2) must not should be noted that when luffing beyond safe elevation angle area, stopping movement when downward luffing must be steady, and band, which carries, to be become
When width, to keep hanging object at a distance from crane arm；Crane arm is by can be reduced hoisting moment when the luffing raising of horizontal position
Safety, crane arm band, which is carried, topples over luffing to horizontal position and will increase hoisting moment, there is the danger tumbled；
(3) should be noted that when cantilever crane stretches out prevents from selecting as far as possible on the basis of guaranteeing need of work beyond torque limitation range
Implement hoisting operation with shorter brachium；Under normal circumstances, it tries not with telescopic jib is carried, because can add with telescopic jib is carried
The abrasion of sliding block between acute cantilever crane, greatly shortens the service life of sliding block, it is necessary to when band carries flexible, abide by lifting capacity and work width
The regulation of degree, to avoid overloading or tumbling；Manipulate lifting mechanism while boom frame telescopic, pay attention to keep suspension hook safety away from
From, prevent hoist rope occur pulleying；For the crane of synchronization telescope, when the stroke of previous joint arm frame is longer than latter joint arm
It is considered as unsafe condition when frame, it is necessary to be corrected and be overhauled；The crane to stretch for program, it is necessary to by regulation programmed
Flexible can be just opened afterwards；
(4) strictly to accomplish " ten do not hang " when playing lift operations；
(5) when turning round operation, it should be noted that observation vehicle frame and turntable tail portion the radius of gyration in whether someone or barrier；
Whether overhead transmission line or other barrier are had in the running space of cantilever crane, and when turning round operation, the loudspeaker that should ring first are warned, and are then solved
Except the braking or locking of swing mechanism, smoothly operating stick is turned round in manipulation；Rotational speed slowly must not rambunctiously should use throttle
Accelerate, accelerates that load vibration can occur suddenly, it is breakneck for expanding working radius；When tentatively hang object slowly stops back
Turn, avoids braking suddenly and lifted weight object being made to generate swing, forbid to carry out revolution operation in the case where weight has swing state, lifted weight
Object does not leave completely and must not carry out in face of ground；Revolution operation, in the same working cycles, revolution operation should be operated in telescopic arm
It is carried out with before luffing operation, when lifting by crane heavy objects revolution, traction drawstring can be fastened in hanging object two sides, to prevent
Hanging object is swung, and when engine stops suddenly, to lift convolution brake bar, locking revolution lock, crane has to lock when not used
Revolution lock, lifts rotary braking, buckles brake.
In the present embodiment, surveyor will be responsible for carrying out the displacement deformation monitoring of foundation pit while removing support, guarantee to tear open
Except monitoring daily in the process, monitoring data are reported in time, foundation pit deformation is excessive when such as supporting removal, should stop removing immediately
And take necessary emergency measure.
In the present embodiment, steel plate in step is the steel plate of 150 × 150 × 10mm.
In the present embodiment, also segmentation should be determined according to used crane load between step 1 and step 2
Length.
In the present embodiment, the selection of step 5 cutting parameter is as follows: being adjusted and is cut by operation control panel in cutting process
Parameter, it is ensured that diamond-wire operating linear velocity should ensure that enough flushing liquors in 20m/s or so, another aspect cutting process
Amount, to guarantee the cooling to diamond-wire, and the break flour that grinding is got off is taken away.Cutting operation accomplishes velocity-stabilization, and parameter is steady
Fixed, equipment is stablized.
In the present embodiment, the content of " ten do not hang " are as follows:
(1) signal command is unknown is not allowed to hang；
(2) it tiltedly leads tiltedly to hang and is not allowed to hang；
(3) hanging object weight unknown or excess load are not allowed to hang；
(4) scattered object is tied up loosely or material puts overfill and is not allowed to hang；
(5) someone is not allowed to hang in hanging object；
(6) underground object is embedded in be not allowed to hang；
(7) safety device failure or it is not allowed to hang in spite of illness；
(8) live light darkness does not see hanging object landing point and is not allowed to hang；
(9) rib sword object directly contacts unprotect measure with wirerope and is not allowed to hang；
(10) six grades or more high wind are not allowed to hang.
In the present embodiment, the steel pipe in step 1 is 48 × 3.0mm of φ steel pipe.
Embodiment 2
A kind of a kind of foundation pit supporting removal construction method, foundation pit supporting removal construction method, includes the following steps:
Step 1: after supporting beam upper reinforcement is cut off, mitigate the carrying of scaffold in support two main reinforcements of side indwelling
Scaffold support is set up with steel pipe in power, supporting beam lower section, and upright bar is arranged by well word when shelf is set up, and upright bar spacing is controlled in 1.2m
Within, 1m is not more than between row, the spacing of horizon bar is not more than 0.9m, and the cross bar as support is connected firmly with upright bar, no less than
For the stability for increasing scaffold bridging must also be arranged, in addition to horizon bar to prevent upright bar from directly standing on concrete table in two o'clock
Stress undue concentration concrete damage in face is padded one block of steel plate in bottom of upright rod thus or is padded with 12a channel steel；
Step 2: sawing main foot prop and auxiliary stand with M16 anchor bolt fixed rope, and directive wheel installation has to stablize, and take turns
Edge has to be aligned with the center line of lacing hole, to ensure that effective cutting speed of cut surface, strict implement installation accuracy are wanted
It asks；
Step 3；Diamond rope is wrapped in driving wheel and auxiliary in sequence according to fixed cutting form
On wheel, notice that the direction of rope should be consistent with driving wheel driving direction；
Step 4: according to field condition, the connection of the associated pipes such as water, electricity, mechanical equipment should correct specification, opposite collection
In, cabling puts strict implement safety regulation for operations, and it is more to prevent machine, people is more, ancillary equipment, material are disorderly put, left about, it causes the accident
Hidden danger in rope cutting process, centainly blocks protection with security protection before the direction of rope movement, and set within a certain area
Safety sign, to prompt pedestrian not enter construction operation area；
Step 5: starting electric motor adjusts driving wheel by control panel and promotes tension, guarantees that diamond-wire is suitably taut
Tightly, recirculated cooling water is supplied, another electric motor is restarted, driving driving wheel drives diamond-wire to recover a turn cutting, cutting
The stability of necessary close observation base in the process, adjusts the offset of directive wheel at any time, to ensure to cut rope in approximately the same plane
It is interior；
Step 6: it reasonably selects truck crane and carries out lifting operation.
In the present embodiment, the lifting operation of step 6 includes following operation:
(1) crane lifting position selects hard ground, and should should be laid with pillow under crane support leg as far as possible far from margin of foundation pit
Wood and steel plate are checked by full-time Security Officer and approve that rear can be carried out lifting operation, and it is comprehensively careful to carry out before lifting
It checks and verifies work, check that equipment installation reference label, rhumb line mark whether that correctly checking whether the lifting lug of equipment meets hangs
Reload request；
(2) must not should be noted that when luffing beyond safe elevation angle area, stopping movement when downward luffing must be steady, and band, which carries, to be become
When width, to keep hanging object at a distance from crane arm；Crane arm is by can be reduced hoisting moment when the luffing raising of horizontal position
Safety, crane arm band, which is carried, topples over luffing to horizontal position and will increase hoisting moment, there is the danger tumbled；
(3) should be noted that when cantilever crane stretches out prevents from selecting as far as possible on the basis of guaranteeing need of work beyond torque limitation range
Implement hoisting operation with shorter brachium；Under normal circumstances, it tries not with telescopic jib is carried, because can add with telescopic jib is carried
The abrasion of sliding block between acute cantilever crane, greatly shortens the service life of sliding block, it is necessary to when band carries flexible, abide by lifting capacity and work width
The regulation of degree, to avoid overloading or tumbling；Manipulate lifting mechanism while boom frame telescopic, pay attention to keep suspension hook safety away from
From, prevent hoist rope occur pulleying；For the crane of synchronization telescope, when the stroke of previous joint arm frame is longer than latter joint arm
It is considered as unsafe condition when frame, it is necessary to be corrected and be overhauled；The crane to stretch for program, it is necessary to by regulation programmed
Flexible can be just opened afterwards；
(4) strictly to accomplish " ten do not hang " when playing lift operations；
(5) when turning round operation, it should be noted that observation vehicle frame and turntable tail portion the radius of gyration in whether someone or barrier；
Whether overhead transmission line or other barrier are had in the running space of cantilever crane, and when turning round operation, the loudspeaker that should ring first are warned, and are then solved
Except the braking or locking of swing mechanism, smoothly operating stick is turned round in manipulation；Rotational speed slowly must not rambunctiously should use throttle
Accelerate, accelerates that load vibration can occur suddenly, it is breakneck for expanding working radius；When tentatively hang object slowly stops back
Turn, avoids braking suddenly and lifted weight object being made to generate swing, forbid to carry out revolution operation in the case where weight has swing state, lifted weight
Object does not leave completely and must not carry out in face of ground；Revolution operation, in the same working cycles, revolution operation should be operated in telescopic arm
It is carried out with before luffing operation, when lifting by crane heavy objects revolution, traction drawstring can be fastened in hanging object two sides, to prevent
Hanging object is swung, and when engine stops suddenly, to lift convolution brake bar, locking revolution lock, crane has to lock when not used
Revolution lock, lifts rotary braking, buckles brake.
In the present embodiment, surveyor will be responsible for carrying out the displacement deformation monitoring of foundation pit while removing support, guarantee to tear open
Except monitoring daily in the process, monitoring data are reported in time, foundation pit deformation is excessive when such as supporting removal, should stop removing immediately
And take necessary emergency measure.
In the present embodiment, steel plate in step is the steel plate of 150 × 150 × 10mm.
In the present embodiment, also segmentation should be determined according to used crane load between step 1 and step 2
Length.
In the present embodiment, the content of " ten do not hang " are as follows:
(1) signal command is unknown is not allowed to hang；
(2) it tiltedly leads tiltedly to hang and is not allowed to hang；
(3) hanging object weight unknown or excess load are not allowed to hang；
(4) scattered object is tied up loosely or material puts overfill and is not allowed to hang；
(5) someone is not allowed to hang in hanging object；
(6) underground object is embedded in be not allowed to hang；
(7) safety device failure or it is not allowed to hang in spite of illness；
(8) live light darkness does not see hanging object landing point and is not allowed to hang；
(9) rib sword object directly contacts unprotect measure with wirerope and is not allowed to hang；
(10) six grades or more high wind are not allowed to hang.
In the present embodiment, the steel pipe in step 1 is 48 × 3.0mm of φ steel pipe.
Embodiment 3
A kind of a kind of foundation pit supporting removal construction method, foundation pit supporting removal construction method, includes the following steps:
Step 1: after supporting beam upper reinforcement is cut off, mitigate the carrying of scaffold in support two main reinforcements of side indwelling
Scaffold support is set up with steel pipe in power, supporting beam lower section, and upright bar is arranged by well word when shelf is set up, and upright bar spacing is controlled in 1.2m
Within, 1m is not more than between row, the spacing of horizon bar is not more than 0.9m, and the cross bar as support is connected firmly with upright bar, no less than
For the stability for increasing scaffold bridging must also be arranged, in addition to horizon bar to prevent upright bar from directly standing on concrete table in two o'clock
Stress undue concentration concrete damage in face is padded one block of steel plate in bottom of upright rod thus or is padded with 12a channel steel；
Step 2: sawing main foot prop and auxiliary stand with M16 anchor bolt fixed rope, and directive wheel installation has to stablize, and take turns
Edge has to be aligned with the center line of lacing hole, to ensure that effective cutting speed of cut surface, strict implement installation accuracy are wanted
It asks；
Step 3；Diamond rope is wrapped in driving wheel and auxiliary in sequence according to fixed cutting form
On wheel, notice that the direction of rope should be consistent with driving wheel driving direction；
Step 4: according to field condition, the connection of the associated pipes such as water, electricity, mechanical equipment should correct specification, opposite collection
In, cabling puts strict implement safety regulation for operations, and it is more to prevent machine, people is more, ancillary equipment, material are disorderly put, left about, it causes the accident
Hidden danger in rope cutting process, centainly blocks protection with security protection before the direction of rope movement, and set within a certain area
Safety sign, to prompt pedestrian not enter construction operation area；
Step 5: starting electric motor adjusts driving wheel by control panel and promotes tension, guarantees that diamond-wire is suitably taut
Tightly, recirculated cooling water is supplied, another electric motor is restarted, driving driving wheel drives diamond-wire to recover a turn cutting, cutting
The stability of necessary close observation base in the process, adjusts the offset of directive wheel at any time, to ensure to cut rope in approximately the same plane
It is interior；
Step 6: it reasonably selects truck crane and carries out lifting operation.
In the present embodiment, the lifting operation of step 6 includes following operation:
(1) crane lifting position selects hard ground, and should should be laid with pillow under crane support leg as far as possible far from margin of foundation pit
Wood and steel plate are checked by full-time Security Officer and approve that rear can be carried out lifting operation, and it is comprehensively careful to carry out before lifting
It checks and verifies work, check that equipment installation reference label, rhumb line mark whether that correctly checking whether the lifting lug of equipment meets hangs
Reload request；
(2) must not should be noted that when luffing beyond safe elevation angle area, stopping movement when downward luffing must be steady, and band, which carries, to be become
When width, to keep hanging object at a distance from crane arm；Crane arm is by can be reduced hoisting moment when the luffing raising of horizontal position
Safety, crane arm band, which is carried, topples over luffing to horizontal position and will increase hoisting moment, there is the danger tumbled；
(3) should be noted that when cantilever crane stretches out prevents from selecting as far as possible on the basis of guaranteeing need of work beyond torque limitation range
Implement hoisting operation with shorter brachium；Under normal circumstances, it tries not with telescopic jib is carried, because can add with telescopic jib is carried
The abrasion of sliding block between acute cantilever crane, greatly shortens the service life of sliding block, it is necessary to when band carries flexible, abide by lifting capacity and work width
The regulation of degree, to avoid overloading or tumbling；Manipulate lifting mechanism while boom frame telescopic, pay attention to keep suspension hook safety away from
From, prevent hoist rope occur pulleying；For the crane of synchronization telescope, when the stroke of previous joint arm frame is longer than latter joint arm
It is considered as unsafe condition when frame, it is necessary to be corrected and be overhauled；The crane to stretch for program, it is necessary to by regulation programmed
Flexible can be just opened afterwards；
(4) strictly to accomplish " ten do not hang " when playing lift operations；
(5) when turning round operation, it should be noted that observation vehicle frame and turntable tail portion the radius of gyration in whether someone or barrier；
Whether overhead transmission line or other barrier are had in the running space of cantilever crane, and when turning round operation, the loudspeaker that should ring first are warned, and are then solved
Except the braking or locking of swing mechanism, smoothly operating stick is turned round in manipulation；Rotational speed slowly must not rambunctiously should use throttle
Accelerate, accelerates that load vibration can occur suddenly, it is breakneck for expanding working radius；When tentatively hang object slowly stops back
Turn, avoids braking suddenly and lifted weight object being made to generate swing, forbid to carry out revolution operation in the case where weight has swing state, lifted weight
Object does not leave completely and must not carry out in face of ground；Revolution operation, in the same working cycles, revolution operation should be operated in telescopic arm
It is carried out with before luffing operation, when lifting by crane heavy objects revolution, traction drawstring can be fastened in hanging object two sides, to prevent
Hanging object is swung, and when engine stops suddenly, to lift convolution brake bar, locking revolution lock, crane has to lock when not used
Revolution lock, lifts rotary braking, buckles brake.
In the present embodiment, steel plate in step is the steel plate of 150 × 150 × 10mm.
In the present embodiment, also segmentation should be determined according to used crane load between step 1 and step 2
Length.
In the present embodiment, the selection of step 5 cutting parameter is as follows: being adjusted and is cut by operation control panel in cutting process
Parameter, it is ensured that diamond-wire operating linear velocity should ensure that enough flushing liquors in 20m/s or so, another aspect cutting process
Amount, to guarantee the cooling to diamond-wire, and the break flour that grinding is got off is taken away.Cutting operation accomplishes velocity-stabilization, and parameter is steady
Fixed, equipment is stablized.
In the present embodiment, the content of " ten do not hang " are as follows:
(1) signal command is unknown is not allowed to hang；
(2) it tiltedly leads tiltedly to hang and is not allowed to hang；
(3) hanging object weight unknown or excess load are not allowed to hang；
(4) scattered object is tied up loosely or material puts overfill and is not allowed to hang；
(5) someone is not allowed to hang in hanging object；
(6) underground object is embedded in be not allowed to hang；
(7) safety device failure or it is not allowed to hang in spite of illness；
(8) live light darkness does not see hanging object landing point and is not allowed to hang；
(9) rib sword object directly contacts unprotect measure with wirerope and is not allowed to hang；
(10) six grades or more high wind are not allowed to hang.
In the present embodiment, the steel pipe in step 1 is 48 × 3.0mm of φ steel pipe.
Construction method that 3 groups of embodiments obtain and traditional construction method are compared into experiment, the correlation data obtained
It is as follows:
Compared by above-mentioned experimental data it can be concluded that, the speed of application of foundation pit supporting removal construction method of the invention is much
It is faster than traditional construction mode, and compared to traditional construction mode, it is a kind of environmentally protective new process that noise and vibration are smaller.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, described in the above embodiment and specification is only the present invention
Preference, be not intended to limit the invention, without departing from the spirit and scope of the present invention, the present invention also has various
Changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by institute
Attached claims and its equivalent thereof.
Claims (8)
1. a kind of foundation pit supporting removal construction method, characterized by the following steps:
Step 1: after supporting beam upper reinforcement is cut off, mitigate the bearing capacity of scaffold, branch in support two main reinforcements of side indwelling
Scaffold support is set up with steel pipe below support beam, upright bar is arranged by well word when shelf is set up, and upright bar spacing controls within 1.2m,
It is not more than 1m between row, the spacing of horizon bar is not more than 0.9m, and the cross bar as support is connected firmly with upright bar, no less than two o'clock,
For the stability for increasing scaffold, bridging must also be set in addition to horizon bar, answered to prevent upright bar from directly standing on concrete surface
The damage of power undue concentration concrete is padded one block of steel plate in bottom of upright rod thus or is padded with 12a channel steel；
Step 2: main foot prop and auxiliary stand, the edge that directive wheel installation is had to stablize, and taken turns are sawed with M16 anchor bolt fixed rope
It has to be aligned with the center line of lacing hole, to ensure effective cutting speed of cut surface, the requirement of strict implement installation accuracy；
Step 3；Diamond rope is wrapped in driving wheel and auxiliary wheel in sequence according to fixed cutting form
On, notice that the direction of rope should be consistent with driving wheel driving direction；
Step 4: according to field condition, the connection of the associated pipes such as water, electricity, mechanical equipment should standardize correctly, Relatively centralized, walk
String pendulum puts strict implement safety regulation for operations, more to prevent machine, people is more, ancillary equipment, material are disorderly put, left about, and cause the accident hidden danger,
In rope cutting process, protection centainly is blocked with security protection before the direction of rope movement, and set safety within a certain area
Mark, to prompt pedestrian not enter construction operation area；
Step 5: starting electric motor adjusts driving wheel by control panel and promotes tension, guarantees that diamond-wire is suitably tightened, supplies
Recirculated cooling water is answered, another electric motor is restarted, driving driving wheel drive diamond-wire, which is recovered, turns cutting, in cutting process
The stability of necessary close observation base, adjusts the offset of directive wheel at any time, to ensure to cut rope in the same plane；
Step 6: it reasonably selects truck crane and carries out lifting operation.
2. foundation pit supporting removal construction method according to claim 1, it is characterised in that: the lifting operation of the step 6
Including operating as follows:
(1) crane lifting position selects hard ground, and should as far as possible far from margin of foundation pit, should lay railway sleepers under crane support leg and
Steel plate is checked by full-time Security Officer and approves that rear can be carried out lifting operation, comprehensive double check must be carried out before lifting
Work is verified, checks that equipment installation reference label, rhumb line mark whether correctly to check whether the lifting lug of equipment meets lifting and want
It asks；
(2) must not should be noted that when luffing beyond safe elevation angle area, stopping movement when downward luffing must be steady, luffing with payload
When, to keep hanging object at a distance from crane arm；Crane arm is peace by can be reduced hoisting moment when the luffing raising of horizontal position
Complete, crane arm band, which is carried, topples over luffing to horizontal position and will increase hoisting moment, there is the danger tumbled；
(3) cantilever crane stretch out when should be noted that prevent beyond torque limit range, on the basis of guaranteeing need of work, as far as possible selection compared with
Short brachium implements hoisting operation；Under normal circumstances, it tries not with telescopic jib is carried, because arm can be aggravated with telescopic jib is carried
The abrasion of sliding block between frame, greatly shortens the service life of sliding block, it is necessary to when band carries flexible, abide by lifting capacity and work range
Regulation, to avoid overloading or tumbling；Lifting mechanism is manipulated while boom frame telescopic, pays attention to the safe distance for keeping suspension hook, sternly
Pulleying occurs for anti-hoist rope；For the crane of synchronization telescope, when the stroke of previous joint arm frame is longer than later section cantilever crane
It is considered as unsafe condition, it is necessary to be corrected and be overhauled；The crane to stretch for program, it is necessary to by ability after regulation programmed
Flexible can be opened；
(4) strictly to accomplish " ten do not hang " when playing lift operations；
(5) when turning round operation, it should be noted that observation vehicle frame and turntable tail portion the radius of gyration in whether someone or barrier；Cantilever crane
Running space in whether have overhead transmission line or an other barriers, when turning round operation, the loudspeaker that should ring first are warned, and are then released back
The braking or locking of rotation mechanism, smoothly operating stick is turned round in manipulation；Rotational speed should slowly must not rambunctiously be added using throttle
Speed accelerates that load vibration can occur suddenly, and it is breakneck for expanding working radius；When tentatively hang object slowly stops back
Turn, avoids braking suddenly and lifted weight object being made to generate swing, forbid to carry out revolution operation in the case where weight has swing state, lifted weight
Object does not leave completely and must not carry out in face of ground；Revolution operation, in the same working cycles, revolution operation should be operated in telescopic arm
It is carried out with before luffing operation, when lifting by crane heavy objects revolution, traction drawstring can be fastened in hanging object two sides, to prevent
Hanging object is swung, and when engine stops suddenly, to lift convolution brake bar, locking revolution lock, crane has to lock when not used
Revolution lock, lifts rotary braking, buckles brake.
3. foundation pit supporting removal construction method according to claim 1, it is characterised in that: measured while removing support
Member will be responsible for carrying out the displacement deformation monitoring of foundation pit, guarantee to monitor daily in demolishing process, monitoring data are reported in time, in case of
Foundation pit deformation is excessive when supporting removal, should stop removing immediately and take necessary emergency measure.
4. foundation pit supporting removal construction method according to claim 1, it is characterised in that: the steel plate of described step one kind is
The steel plate of 150 × 150 × 10mm.
5. foundation pit supporting removal construction method according to claim 1, it is characterised in that: in the step 1 and the step
Between rapid two also section length should be determined according to used crane load.
6. foundation pit supporting removal construction method according to claim 1, it is characterised in that: the step 5 cutting parameter
It selects as follows: cutting parameter being adjusted by operation control panel in cutting process, it is ensured that diamond-wire operates linear velocity on the left side 20m/s
The right side should ensure that enough flushing fluids in another aspect cutting process, to guarantee the cooling to diamond-wire, and grinding be got off
Break flour take away, cutting operation accomplishes velocity-stabilization, and parameter stability, equipment are stablized.
7. foundation pit supporting removal construction method according to claim 2, it is characterised in that: the content of " ten do not hang "
Are as follows:
(1) signal command is unknown is not allowed to hang；
(2) it tiltedly leads tiltedly to hang and is not allowed to hang；
(3) hanging object weight unknown or excess load are not allowed to hang；
(4) scattered object is tied up loosely or material puts overfill and is not allowed to hang；
(5) someone is not allowed to hang in hanging object；
(6) underground object is embedded in be not allowed to hang；
(7) safety device failure or it is not allowed to hang in spite of illness；
(8) live light darkness does not see hanging object landing point and is not allowed to hang；
(9) rib sword object directly contacts unprotect measure with wirerope and is not allowed to hang；
(10) six grades or more high wind are not allowed to hang.
8. foundation pit supporting removal construction method according to claim 1, it is characterised in that: the steel pipe in the step 1 is
φ 48 × 3.0mm steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471964.9A CN109356170A (en) | 2018-12-04 | 2018-12-04 | A kind of foundation pit supporting removal construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471964.9A CN109356170A (en) | 2018-12-04 | 2018-12-04 | A kind of foundation pit supporting removal construction method |
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| CN109356170A true CN109356170A (en) | 2019-02-19 |
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| CN201811471964.9A Pending CN109356170A (en) | 2018-12-04 | 2018-12-04 | A kind of foundation pit supporting removal construction method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695314A (en) * | 2015-02-17 | 2015-06-10 | 中交一航局第四工程有限公司 | Construction method for cutting concrete by using diamond wire saw |
| CN105220894A (en) * | 2015-11-16 | 2016-01-06 | 中国华西企业有限公司 | The harmless cutting disassembling structure of inner support rope saw and construction thereof |
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2018
- 2018-12-04 CN CN201811471964.9A patent/CN109356170A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695314A (en) * | 2015-02-17 | 2015-06-10 | 中交一航局第四工程有限公司 | Construction method for cutting concrete by using diamond wire saw |
| CN105220894A (en) * | 2015-11-16 | 2016-01-06 | 中国华西企业有限公司 | The harmless cutting disassembling structure of inner support rope saw and construction thereof |
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| Title |
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| JIAYOU10: "砼支撑梁拆除方案课件", 《原创力文档》 * |
| 张明星: "深基坑钢筋混凝土支撑拆除探讨", 《福建建材》 * |
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