CN108386007B - Construction method for directionally dismantling large-volume reinforced concrete by using wire saw - Google Patents
Construction method for directionally dismantling large-volume reinforced concrete by using wire saw Download PDFInfo
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- CN108386007B CN108386007B CN201810264307.0A CN201810264307A CN108386007B CN 108386007 B CN108386007 B CN 108386007B CN 201810264307 A CN201810264307 A CN 201810264307A CN 108386007 B CN108386007 B CN 108386007B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
- E04G23/082—Wrecking of buildings using shears, breakers, jaws and the like
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Abstract
The invention relates to the technical field of directional dismantling of a rope saw, and discloses a construction method for directional dismantling of large-volume reinforced concrete by the rope saw, which comprises the following construction steps: (1) the bottom around the object to be dismantled is provided with a sawing rope in a surrounding way, the sawing rope forms a closed circuit (2), a threading mode is designed according to the circuit, and the threading mode of the sawing rope is selected according to the shape and the size of the object to be dismantled; the pulley block is arranged in front of the object to be dismantled and at the corner of the object to be dismantled; the sawing rope is connected to a cutting rope sawing machine (4) to start the cutting rope sawing machine (5) and the cutting rope sawing machine is started after the sawing rope is cut towards the front direction (3) from the rear side of the object to be removed, the object to be removed is integrally cut, the object to be removed is sequentially cut into small blocks (6) along the longitudinal direction and the transverse direction of the object to be removed, the cut concrete blocks are sequentially lifted out through a crane, and the site is cleaned. The construction method for cutting and the construction method for dismantling the concrete meet the requirements of construction safety, timeliness and environmental protection.
Description
Technical Field
The invention relates to the technical field of directional dismantling of large-volume reinforced concrete by a wire saw, in particular to a construction method for directional dismantling of large-volume reinforced concrete by the wire saw.
Background
In the building engineering, before or during the construction, a large-volume reinforced concrete structure such as a bearing platform (such as a foundation bearing platform of a tower crane), a pier, a column and the like needs to be temporarily arranged, and in the later stage of the engineering or after the end of the engineering, the large-volume reinforced concrete structure needs to be dismantled; for the large-volume reinforced concrete body to be dismantled, the structure is large in volume and high in strength, and the reinforced concrete body is firmly combined with other parts of a building, so that the dismantling is difficult.
At present, the main methods for dismantling reinforced concrete structures such as bearing platforms and the like are as follows: mechanical crushing is generally adopted, and air picks are used for crushing manually or hydraulic cannon machines are used for chiseling, but the methods are often noisy, dusty and slow in progress.
Or, the static explosion mode is that a certain number of static explosion drill holes are drilled on the surface of the demolished object, after the static explosion agent is filled, the mixed concrete is swelled and cracked, and then mechanical disintegration is adopted.
Furthermore, a hydraulic mechanical breaking method is adopted, namely, a drill hole is drilled on the surface of the demolished object, and then the reinforced concrete is broken by means of the expansion force of the hydraulic machine, so that the method is small in breaking amount, high in labor intensity and low in efficiency each time.
In the prior art, a common dismantling method cannot meet the current construction requirements, and how to ensure that the construction method is slightly restricted by the surrounding environment, has low risk, is efficient, economic and environment-friendly when a large-volume reinforced concrete structure is dismantled is a difficult problem to be solved.
Disclosure of Invention
The invention aims to provide a construction method for directionally removing large-volume reinforced concrete by a wire saw, and aims to solve the problems of high construction risk and low efficiency when a large-volume reinforced concrete structure is removed in the prior art.
The invention discloses a construction method for directionally dismantling large-volume reinforced concrete by a wire saw, which is characterized by comprising the following construction steps:
(1) a sawing rope is arranged at the bottom around the object to be dismantled in a surrounding mode, and the sawing rope forms a closed circuit;
(2) designing a threading mode according to the line, and selecting the threading mode of the sawing rope according to the shape and the size of the object to be dismantled; the threading mode, the direction and the height of the line are determined by a pulley block, and the pulley block is arranged in front of the object to be dismantled and at the corner of the object to be dismantled; the sawing rope cuts from the back of the object to be dismantled to the front;
(3) the saw wire is connected to the cutting wire saw machine, and the cutting wire saw machine is fixed;
(4) after the cutting rope saw is installed, starting the cutting rope saw;
(5) after the cutting rope sawing machine is started, integrally cutting the object to be removed, after the integral cutting is finished, sequentially cutting the object to be removed along the longitudinal direction of the object to be removed, and then sequentially cutting the object to be removed into small blocks along the transverse direction of the object to be removed;
(6) and after the object to be dismantled is longitudinally and transversely cut, a plurality of concrete blocks are formed, the cut concrete blocks are sequentially lifted out through a crane, and the site is cleaned.
Further, the cutting rope sawing machine is started, when the sawing rope cuts the object to be dismantled, the object to be dismantled forms a cutting surface, and a reinforcing rib is placed between the cutting surface and the ground.
Further, along the transverse direction of the object to be dismantled, side end portions are formed between two sides of the cutting surface and the ground respectively, and the reinforcing ribs are placed at the side end portions; when the cutting wire saw is used for cutting, the padding ribs are sequentially arranged along the side end part along the longitudinal direction of the object to be removed along with the range of the side end part after cutting.
Furthermore, an initial cutting section is arranged between the cutting surface and the ground, and a plurality of cushion ribs are sequentially arranged on the initial cutting section along the transverse direction of the object to be dismantled.
Furthermore, the pulley block comprises a guide pulley block for changing the direction of the saw rope and a directional pulley block for maintaining the direction of the saw rope, and two ends of the saw rope respectively penetrate through the guide pulley block and the directional pulley block and are connected to the cutting rope sawing machine.
Furthermore, two corners are arranged in front of the object to be dismantled, the two corners are respectively provided with the guide pulley block, the directional pulley block and the cutting rope sawing machine are arranged in front of one corner, the cutting rope sawing machine is connected to the cutting rope after passing through the directional pulley block, and the cutting rope sawing machine is connected to the cutting rope sawing machine after passing through the guide pulley block from the other corner and facing one corner and being connected to the guide pulley block on the one corner.
Further, the sawing rope is a diamond sawing rope.
Further, according to the positioning of the sawing rope, the cutting rope sawing machine is fixed at the optimal position suitable for cutting, bolt holes are drilled through the cutting rope sawing machine electrically, the cutting rope sawing machine is fixed on the ground (or on the floor) through expansion bolts, all components are assembled, mounting bolts are screwed, and the sawing rope is connected.
Further, after the cutting rope saw is installed, the cutting rope saw is connected with an operating system, a hydraulic oil pipe or a hydraulic station, a power supply of a motor is connected, cold water is connected, the cutting rope saw is debugged, and after the fact that the rope saw can start to cut is confirmed, the cutting rope saw starts to cut.
Further, after the cutting rope sawing machines integrally cut the object to be dismantled, the plurality of cutting rope sawing machines simultaneously perform construction cutting operation along the transverse direction and the longitudinal direction of the object to be dismantled to form the block-shaped object to be dismantled.
Compared with the prior art, the construction method for directionally removing the large-volume reinforced concrete by the rope saw comprises the steps of firstly designing a rope saw line, designing a pulley block, installing and positioning a saw rope, installing a cutting rope saw, starting the rope saw to cut, cutting objects to be removed in blocks, and finally hoisting and transporting the blocky objects to be removed; by the construction method, the large-volume reinforced concrete is dismantled; the construction method for cutting is simple and efficient, meanwhile, during cutting, vibration is small, influence on surrounding structures is small, noise in construction is small, and requirements of construction safety, timeliness and environmental protection are met.
Drawings
FIG. 1 is a schematic perspective view of a construction method for directionally removing large-volume reinforced concrete by a wire saw, provided by an embodiment of the invention;
FIG. 2 is a perspective view of a directional guide wheel set of the construction method for directionally removing large-volume reinforced concrete by using a rope saw, provided by the embodiment of the invention;
FIG. 3 is a perspective view of a guide pulley set for a construction method of directionally removing large-volume reinforced concrete by a wire saw according to an embodiment of the present invention;
fig. 4 is a perspective view illustrating simultaneous operation of a plurality of cutting wire saws in the construction method for directionally removing the large-volume reinforced concrete by the wire saw according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
Referring to fig. 1-4, preferred embodiments of the present invention are provided.
The construction method for directionally dismantling the large-volume reinforced concrete by the wire saw is used for solving the problems of high construction risk and low efficiency when dismantling the large-volume reinforced concrete structure.
The construction method for directionally dismantling the large-volume reinforced concrete by the wire saw comprises the following construction steps:
(1) a sawing rope 20 is arranged around the bottom of the periphery of the object 10 to be dismantled, and the sawing rope 20 forms a closed circuit;
(2) designing a threading mode according to the line, and selecting the threading mode of the sawing rope 20 according to the shape and the size of the object 10 to be dismantled; the threading mode, the direction and the height of the line are determined by the pulley block 30, and the pulley block 30 is arranged in front of the object 10 to be dismantled and at the corner of the object 10 to be dismantled; the sawing cord 20 cuts from the rear of the object 10 to be dismantled toward the front;
(3) the saw wire 20 is connected to the cutting wire saw 40, and fixes the cutting wire saw 40;
(4) after the cutting rope saw 40 is installed, starting the cutting rope saw 40;
(5) after the cutting rope sawing machine 40 is started, integrally cutting the object to be dismantled 10, after the integral cutting is finished, sequentially cutting the object to be dismantled 10 along the longitudinal direction of the object to be dismantled 10, and then sequentially cutting the object to be dismantled 10 along the transverse direction of the object to be dismantled 10;
(6) and after the object 10 to be dismantled is longitudinally and transversely cut, a plurality of concrete blocks 11 are formed, the cut concrete blocks 11 are sequentially lifted out through a crane, and the site is cleaned.
The construction method for directionally removing the large-volume reinforced concrete by the rope saw comprises the steps of firstly designing a rope saw line, designing a pulley block 30 and a directional pulley, installing and positioning the saw rope 20 and installing a cutting rope saw 40, then starting the rope saw to cut, cutting the object to be removed 10 in blocks, and finally hoisting and transporting the blocky object to be removed 10; by the construction method, the large-volume reinforced concrete is dismantled; the construction method for cutting is simple and efficient, meanwhile, during cutting, vibration is small, influence on surrounding structures is small, noise in construction is small, and requirements of construction safety, timeliness and environmental protection are met.
Specifically, when the cutting rope sawing machine 40 is started, the sawing rope 20 cuts the object to be dismantled 10, the object to be dismantled 10 forms a cutting surface, and the reinforcing rib 50 is placed between the cutting surface and the ground; under the effect of the filler rib 50, a certain distance is reserved between the cutting surface and the ground, so that a penetrating space is reserved for the sawing rope 20 when the object 10 to be removed is cut into blocks subsequently, installation of the sawing rope 20 is facilitated, and further the working efficiency is improved.
Furthermore, side end portions are formed between both sides of the cut surface and the ground, respectively, in the lateral direction of the object to be dismantled 10, and the beads 50 are placed at the side end portions; when the cutting wire saw 40 cuts, the beads 50 are sequentially arranged along the side end portions as the range of the side end portions increases after cutting along the longitudinal direction of the object 10 to be dismantled; that is to say, when the cutting rope sawing machine 40 works, the padding ribs 50 are arranged between the cut cutting surface and the ground, so that a certain distance is effectively ensured between the cutting surface and the ground, the subsequent installation of the sawing rope 20 is facilitated, and the working efficiency is further improved.
In addition, an initial cutting section is arranged between the cutting surface and the ground, a plurality of cushion ribs 50 are sequentially arranged on the initial cutting section along the transverse direction of the object 10 to be dismantled, and the cushion ribs 50 are sequentially arranged along the transverse direction of the object 10 to be dismantled, so that the arrangement has the advantages that firstly, a certain distance is reserved between the cutting surface and the ground, the subsequent installation of the sawing rope 20 is facilitated, and the working efficiency is further improved; secondly, installation of the beads 50 of the side end portion is facilitated while enhancing safety in cutting the object to be removed 10.
The cushion ribs 50 can be repeatedly used, and the engineering cost is greatly reduced.
The pulley block 30 comprises a guide pulley block 32 for changing the direction of the saw rope 20 and a directional pulley block 31 for enabling the saw rope 20 to be in a tensioning state, and two ends of the saw rope 20 respectively penetrate through the guide pulley block 32 and the directional pulley block 31 and are connected to the cutting rope sawing machine 40; under the action of the guide pulley block 32 and the directional pulley block 31, the circuit of the sawing rope 20 is designed, so that the sawing rope 20 can surround the object 10 to be dismantled to form a closed shape, and meanwhile, the cutting effect of the sawing rope 20 is effectively ensured.
Furthermore, two corners are arranged in front of the object to be dismantled 10, a guide pulley block 32 is respectively arranged at the two corners, a directional pulley block 31 and a cutting rope sawing machine 40 are arranged in front of one corner, and the cutting rope sawing machine 40 is connected after the cutting rope 20 passes through the directional pulley block 31; the cutting rope sawing machine 40 is connected after the cutting rope 20 passes through the guide pulley block 32 from the other corner and faces one corner and is connected with the guide pulley block 32 on one corner; the advantage of this arrangement is that it is easy to cut the object 10 to be dismantled, and in addition, the routing and threading of the sawing cord 20 are arranged by the directional pulley block 31 and the guide pulley block 32, so that the object 10 to be dismantled can be dismantled in many cases.
The guide pulley block 32 is provided with a plurality of guide pulleys, and the direction of the sawing rope 20 can be changed on the same plane by using a single guide pulley, so that the sawing rope 20 can be changed into a longitudinal direction along the transverse direction, and the route of the sawing rope 20 can be designed conveniently; the two guide pulleys are transversely and longitudinally staggered, the sawing rope 20 passes through one guide pulley and then passes through the other guide pulley, and the direction of the sawing rope 20 is changed; therefore, according to different requirements, different sawing ropes 20 routes and threading modes can be designed, so that the guide pulley block 32 has more functionality, is convenient to be repeatedly used for many times, and reduces the engineering cost.
Because the object to be dismantled 10 is uncertain in formation, the directional pulley block 31 or the guide pulley block 32 is arranged according to different corners of the object to be dismantled 10, so that the saw rope 20 can enclose the object to be dismantled 10 to meet the requirement of cutting the object to be dismantled 10; therefore, according to the object 10 to be dismantled under different conditions, a proper cutting route and a threading mode are designed through the directional pulley block 31 and the guide pulley block 32, and therefore the practicability of the construction method is improved.
Specifically, the sawing cord 20 is a diamond sawing cord 20; thus, the wear resistance of the sawing cord 20 is higher, and the diamond sawing cord 20 has the advantages of flexible cutting, low noise, low dust, low pollution, energy saving and the like.
Fixing the cutting rope sawing machine 40 at the optimal position suitable for cutting according to the positioning of the sawing rope 20, drilling bolt holes by using electricity, fixing the cutting rope sawing machine 40 on the ground (or on the floor) through expansion bolts, assembling all components, screwing down mounting bolts, and connecting the sawing rope 20; the cutting wire saw 40 is fixed in front of the object 10 to be dismantled; like this, be convenient for operate cutting rope saw 40, in addition, cutting rope saw 40's mounting means, it is simple convenient, effectively improve engineering efficiency.
After the cutting rope saw 40 is installed, the cutting rope saw is connected with an operating system, a hydraulic oil pipe or a hydraulic station, a power supply of a motor is connected, cold water is connected, the cutting rope saw 40 is debugged, and after the fact that the rope saw can start to cut is confirmed, the cutting rope saw 40 starts to cut; through the steps, the safety of engineering is improved; and water is continuously sprayed to the cutting part in the construction, so that the construction smoke is effectively reduced.
After the cutting rope sawing machines 40 integrally cut the object to be dismantled 10, simultaneously performing construction cutting operation on a plurality of cutting rope sawing machines 40 along the transverse direction and the longitudinal direction of the object to be dismantled 10 to form a block-shaped object to be dismantled 11; during construction, one or more machines can be adopted for simultaneous construction, so that the construction is flexible and the time is saved; in addition, the block-shaped object to be dismantled 11 is more convenient to transport.
The construction method for directionally removing the large-volume reinforced concrete by the wire saw has the advantages that the whole section is cut by the object 10 to be removed at one time, the wire saw holes needing to be drilled are few, and the wire saw holes do not need to be drilled when the object 10 to be removed is cut into blocks, so that the construction efficiency is greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The construction method for directionally dismantling the large-volume reinforced concrete by the wire saw is characterized by comprising the following construction steps of:
(1) a sawing rope is arranged at the bottom around the object to be dismantled in a surrounding mode, and the sawing rope forms a closed circuit; fixing a cutting rope sawing machine at an optimal position suitable for cutting according to the positioning of the sawing rope, drilling a bolt hole by using electricity, fixing the cutting rope sawing machine on the ground through expansion bolts, assembling all components, screwing down a mounting bolt, and connecting the sawing rope;
(2) designing a threading mode according to the line, and selecting the threading mode of the sawing rope according to the shape and the size of the object to be dismantled; the threading mode and the direction and height of the line are determined by a pulley block, the pulley block is arranged in front of the object to be dismantled and at the corner of the object to be dismantled, the pulley block comprises a guide pulley block for changing the direction of the saw rope, the guide pulley block comprises two guide pulleys, the two guide pulleys are transversely and longitudinally staggered, and the saw rope passes through one guide pulley and then passes through the other guide pulley; the sawing rope cuts from the back of the object to be dismantled to the front;
(3) the saw wire is connected to the cutting wire saw machine, and the cutting wire saw machine is fixed;
(4) after the cutting rope saw is installed, starting the cutting rope saw;
(5) after the cutting rope sawing machine is started, the object to be dismantled is integrally cut, when the sawing rope cuts the object to be dismantled, a cutting surface is formed on the object to be dismantled, a cushion rib is placed between the cutting surface and the ground, side end portions are respectively formed between two sides of the cutting surface and the ground along the transverse direction of the object to be dismantled, the cushion rib is placed at the side end portions, and the outer end of the cushion rib extends to the outside of the side end portions; when the cutting rope saw is used for cutting, the padding ribs are sequentially arranged along the side end part along the longitudinal direction of the object to be dismantled along with the range of the side end part after cutting; after the integral cutting is finished, sequentially cutting the objects to be removed along the longitudinal direction of the objects to be removed, and then sequentially cutting the objects to be removed into small blocks along the transverse direction of the objects to be removed;
(6) after the cutting rope sawing machines integrally cut the object to be removed, a plurality of cutting rope sawing machines simultaneously perform construction cutting operation along the transverse direction and the longitudinal direction of the object to be removed to form blocky objects to be removed, the cut blocky objects to be removed are sequentially lifted out through a crane, and the site is cleaned.
2. The construction method for directionally dismantling large-volume reinforced concrete by using the wire saw as claimed in claim 1, wherein a starting cutting section is arranged between the cutting surface and the ground, and a plurality of the reinforcing bars are sequentially arranged on the starting cutting section along the transverse direction of the object to be dismantled.
3. The construction method for directionally removing large-volume reinforced concrete by using the rope saw as claimed in claim 1 or 2, wherein the pulley block comprises a directional pulley block for maintaining the direction of the saw rope, and two ends of the saw rope are connected to the cutting rope saw after respectively passing through the guide pulley block and the directional pulley block.
4. The construction method for directionally dismantling large-volume reinforced concrete by using the rope saw as claimed in claim 3, wherein the object to be dismantled has two corners in front of which the guide pulley block is disposed, the guide pulley block and the cutting rope saw are disposed in front of one of the corners, the cutting rope saw is connected to the object to be dismantled after passing through the guide pulley block, and the cutting rope saw is connected to the object to be dismantled after passing through the guide pulley block from the other corner and toward one of the corners and connecting to the guide pulley block at one of the corners.
5. The construction method for directionally dismantling large-volume reinforced concrete by using the rope saw as claimed in claim 1 or 2, wherein the sawing rope is a diamond sawing rope.
6. The construction method for directionally dismantling large-volume reinforced concrete by using the rope saw as claimed in claim 1 or 2, wherein after the cutting rope saw is installed, an operation system is connected, a hydraulic oil pipe or a hydraulic station is connected, then the power supply of the motor is connected, cold water is connected, the cutting rope saw is debugged, and after the rope saw can start the rope saw operation, the cutting rope saw starts to perform cutting operation.
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| CN201810264307.0A CN108386007B (en) | 2018-03-28 | 2018-03-28 | Construction method for directionally dismantling large-volume reinforced concrete by using wire saw |
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| CN201810264307.0A CN108386007B (en) | 2018-03-28 | 2018-03-28 | Construction method for directionally dismantling large-volume reinforced concrete by using wire saw |
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| CN109235290A (en) * | 2018-10-11 | 2019-01-18 | 中建钢构有限公司 | Bridge peace tears construction method open |
| CN109680984A (en) * | 2018-12-27 | 2019-04-26 | 广州市住宅建设发展有限公司 | Armored concrete air channel structure Demolition Construction method based on BIM technology |
| CN109680111B (en) * | 2019-01-25 | 2021-03-23 | 福州天石源超硬材料工具有限公司 | Local dismantling method for residual iron of blast furnace |
| CN110630036B (en) * | 2019-11-19 | 2020-03-27 | 上海建工四建集团有限公司 | Construction equipment integrating fixing, cutting and transporting of building components and construction method |
| CN116122624A (en) * | 2023-03-20 | 2023-05-16 | 中国十九冶集团有限公司 | Construction method for protective dismantling of large-scale equipment |
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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 |
| CN102828472B (en) * | 2012-09-20 | 2014-04-02 | 中铁八局集团第一工程有限公司 | Method for cutting off temporary support of continuous girder bridge by wire saw |
| KR101531173B1 (en) * | 2014-04-10 | 2015-06-25 | 박종협 | Diamond wire saw cutting concrete structures using a hybrid approach apparatus |
| 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 |
| CN105220894B (en) * | 2015-11-16 | 2016-08-17 | 中国华西企业有限公司 | Inner support rope saws lossless cutting disassembling structure and construction thereof |
| CN107604941A (en) * | 2017-01-03 | 2018-01-19 | 深圳大学 | A kind of new and old subway station connectivity part diaphragm wall and side wall restructuring bankrupt |
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