CN111877798A - Static force dismantling construction process for concrete structure of continuous construction project - Google Patents
Static force dismantling construction process for concrete structure of continuous construction project Download PDFInfo
- Publication number
- CN111877798A CN111877798A CN202010788385.8A CN202010788385A CN111877798A CN 111877798 A CN111877798 A CN 111877798A CN 202010788385 A CN202010788385 A CN 202010788385A CN 111877798 A CN111877798 A CN 111877798A
- Authority
- CN
- China
- Prior art keywords
- cutting
- construction
- concrete structure
- dismantling
- static force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Abstract
The invention discloses a concrete structure static force dismantling construction process for a continuous construction project, which comprises the following construction steps: s110, building edge protection; s120, partitioning on a construction drawing, and snapping line marks on the concrete structure by contrasting with the drawing; s130, erecting a full-hall support frame; s140, performing cutting construction on the diamond chain rope; s150, constructing a wall saw cutting machine; s160, cutting the plate; s170, cutting a beam; s180, cutting the column; and S190, cutting stairs. Has the advantages that: the concrete is cut into any shape according to the environment and actual requirements of a construction site, so that the construction safety is good; less dust generated in the process of dismantling the concrete structure and good environmental protection; compared with the conventional dismantling method, the construction efficiency is high, and the construction period can be greatly shortened.
Description
Technical Field
The invention relates to the technical field of concrete structure static force demolition, in particular to a concrete structure static force demolition construction process for a continuous construction project.
Background
With the acceleration of modern construction of cities in China, the number of old building demolition projects is increasing day by day. Demolition structures have also evolved from brick and wood structures to hybrid structures, frame structures, panel structures, and the like. In the construction engineering demolition or reconstruction, when conventional demolition construction technical measures such as blasting, mechanical or manual chiseling and the like are adopted, a plurality of adverse effects exist: the method has the advantages of large influence on the structure of the original building and the reserved part of the structure, low construction efficiency, high noise, serious dust pollution, high work risk, many potential safety hazards, low reliability and the like; meanwhile, with the improvement of environmental protection requirements, the dust emission control requirements on construction sites are more and more strict, and the dust emission pollution is very easy to generate in the construction process of the traditional dismantling mode. Therefore, the applicant provides a concrete structure dismantling construction process which is safe in construction, high in efficiency and good in environmental protection.
Disclosure of Invention
The invention aims to solve the problems and provide a static force dismantling construction process for a concrete structure of a continuous construction project, and the preferable technical scheme in the technical schemes provided by the invention comprises the following steps: the construction process hardly generates dust, has good environmental protection, high demolition efficiency, shortened construction period, good safety and other technical effects, and is explained in detail below.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a concrete structure static force dismantling construction process for a continuous construction project, which comprises the following construction steps:
s110, building edge protection;
s120, partitioning on a construction drawing, and snapping line marks on the concrete structure by contrasting with the drawing;
s130, erecting a full-hall support frame;
s140, performing cutting construction on the diamond chain rope;
s150, constructing a wall saw cutting machine;
s160, cutting the plate;
s170, cutting a beam;
s180, cutting the column;
and S190, cutting stairs.
Preferably, in step S110, the temporary edge protection is set up around the to-be-dismantled position, and a warning mark is set, with a height of 1.5 m.
Preferably, in step S120, the floor slab has a cut size of 0.6 × 0.6 square meter to 1.0 × 1.0 square meter; when the cross-sectional dimension of the beam is not more than 0.4X 0.7 square meter, the cutting length is not more than 2m, and when the cross-sectional dimension of the beam is more than 0.4X 0.7 square meter, the cutting length is not more than 1.5 m.
Preferably, the step S140 includes the following operations:
operation S141, laying pipelines of a power supply and a water source on a construction site;
operation S142, dividing the partitioning cutting lines on the beam to be cut;
operation S143, drilling a through hole for sleeving the diamond rope on the wall at the cutting line junction of the support beam by using a drilling machine, wherein the diameter of the through hole is not less than 108 mm;
operation S144, switching on a water source and a power source on the cutter;
operation S145, connecting a diamond rope on the cutting machine in a penetrating manner, and connecting a joint by using a hydraulic clamp;
and operation S146, turning on a water source, adjusting the water flow, and simultaneously controlling the cutting machine to tighten the diamond rope, so that the cutting operation can be started.
Preferably, the step S150 includes the following operations:
operation S151, laying water pipes and electric wires on a construction site;
operation S152, dividing cutting lines on the floor to be cut;
operation S153, cutting the branch cutter by using a wall saw according to the position of the cutting line;
operation S154, drilling hoisting holes on the single floor after the cutter splitting, wherein the hoisting holes are symmetrically arranged on the single floor;
and S155, penetrating a lifting rope on the single floor slab, and adjusting away the cutting position.
Preferably, the step S160 includes the following operations:
operation S161, determining a side line of the spring beam, wherein the side line position of the spring beam is 100mm of the outward expansion of the cutting line position;
operation S162 of determining a cutting line of the springboard;
operation S163, springing the hoisting hole line, and drilling the hoisting hole by using a rhinestone;
operation S164, cutting a tangent line passing through the hoisting hole, and then installing a sling in the hoisting hole;
operation S165 cuts the periphery of the target plate, and turns away after the target plate is completely separated from the original structure.
Preferably, in the step S170, when the beam is cut, the target beam is divided into odd-numbered sections, the middle section is cut first, the middle section is bound by using a sling during the cutting, and both sides of the middle section are cut simultaneously.
Preferably, the step S190 includes the following operations:
operation S191, dismantling the stair tread;
operation S192, removing the landing slab;
operation S193, dismantling the stair beam;
and operation S194, removing the stair support column.
In conclusion, the beneficial effects of the invention are as follows: 1. the concrete is cut into any shape according to the environment and actual requirements of a construction site, so that the construction safety is good;
2. less dust generated in the process of dismantling the concrete structure and good environmental protection;
3. compared with the conventional dismantling method, the construction efficiency is high, and the construction period can be greatly shortened.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention provides a concrete structure static force dismantling construction process for a continuous construction project, which comprises the following construction steps:
step S110, erecting a temporary edge guard which is erected around the to-be-dismantled part and is provided with a warning mark with the height of 1.5 m; the distance between the vertical rods is 1.5m, the distance between the horizontal rods is 0.5m, the height of the foot baffle plate is 20cm, an anti-flame safety net is hung, and the bottom of the anti-flame safety net is fixed by expansion bolts or post-planted steel bars. If necessary, additionally arranging a steel pipe support to prevent the looseness or overturn of the edge protection;
step S120, dividing blocks on the construction drawing, and marking the bullet lines on the concrete structure by contrasting the drawing, wherein the cutting size of the floor slab is 0.6X 0.6 square meter to 1.0X 1.0 square meter; when the cross-sectional dimension of the beam is not more than 0.4X 0.7 square meter, the cutting length is not more than 2m, and when the cross-sectional dimension of the beam is more than 0.4X 0.7 square meter, the cutting length is not more than 1.5 m; according to the size requirements of the structural members of the drawing, the dismantling structure of the plate, the beam, the column and the like is dismantled and partitioned on the drawing by combining the truck crane station and the performance parameters of the crane. Before cutting, the sample should be correctly laid out, and the line is flicked and marked on the spot. The cut concrete block is made to approximately conform to the theoretical calculation. The potential safety hazard caused by overload during hoisting is avoided;
step S130, erecting a full-hall supporting frame, and erecting a plate buckle full-hall supporting frame before the concrete main beam with larger span is removed so as to prevent collapse when the main beam is removed;
step S140, cutting construction of the diamond chain rope saw; the method specifically comprises the following operations: operation S141, laying pipelines of a power supply and a water source on a construction site;
operation S142, dividing the partitioning cutting lines on the beam to be cut;
operation S143, drilling a through hole for sleeving the diamond rope on the wall at the cutting line junction of the support beam by using a drilling machine, wherein the diameter of the through hole is not less than 108 mm;
operation S144, switching on a water source and a power source on the cutter;
operation S145, connecting a diamond rope on the cutting machine in a penetrating manner, and connecting a joint by using a hydraulic clamp;
operation S146, turning on a water source, adjusting the water flow, and simultaneously controlling a cutting machine to tighten the diamond rope, so that the cutting operation can be started;
s150, constructing a wall saw cutting machine; the method comprises the following operations of S151, laying water pipes and electric wires on a construction site;
operation S152, dividing cutting lines on the floor to be cut;
operation S153, cutting the branch cutter by using a wall saw according to the position of the cutting line;
operation S154, drilling hoisting holes on the single floor after the cutter splitting, wherein the hoisting holes are symmetrically arranged on the single floor;
s155, connecting a lifting rope on the single floor slab in a penetrating manner, and adjusting away the cutting position;
step S160, cutting the slab, namely calculating the size of the block according to the thickness of the floor slab and the selection of hoisting equipment before cutting, and ensuring that the weight of the cut component is within the allowable range of a crane; when a plurality of blocks to be cut are divided into a plurality of blocks in the same span beam, the block at the middle is cut firstly, and then the plate close to the edge of the beam is cut, so that the overhanging length of the overhanging component of the plate is reduced, and if the connection between the plate and the beam is unilateral connection, the overhanging length is not more than 2 m; the method specifically comprises the following operations of S161, determining a spring beam side line, wherein the position of the spring beam side line is 100mm of the outward expansion of a cutting line position;
operation S162 of determining a cutting line of the springboard;
operation S163, springing the hoisting hole line, and drilling the hoisting hole by using a rhinestone;
operation S164, cutting a tangent line passing through the hoisting hole, and then installing a sling in the hoisting hole;
operation S165, cutting the periphery of the target plate, and adjusting away after the target plate is completely separated from the original structure;
step S170, cutting a beam; cutting the beam after the plate is cut, calculating the stability of the overhanging length of the beam after cutting according to the span and the size, cutting the beam into odd sections, firstly taking the middle section, hanging the first section by a crane before cutting, simultaneously cutting by 2 cutting machines, hanging the first section away after cutting, and then hanging the subsequent sections away;
step S180, cutting the column;
step S190, cutting stairs; the method specifically comprises the following operations: operation S191, dismantling the stair tread;
operation S192, removing the landing slab;
operation S193, dismantling the stair beam;
operation S194, removing the stair supporting column; the stair cut follows the principle of removal from the upper to the lower floors.
During the construction of the reinforced concrete engineering, the concrete structure needs to be reasonably partitioned according to the size and the position of the cross section of a beam, a plate, a column, a wall and a stair of the removed reinforced concrete structure and the performance of hoisting and transportation tools; the floor cutting sequence is as follows: wall saw cuts floor → rope saw cuts secondary beam → rope saw cuts main beam → rope saw cuts post (wall) → rope saw cuts stairs. Wherein the beam is cut into the middle section and then two end sections; cutting the column in sections from top to bottom; dismantling the structure of the prestressed concrete beam with large span: firstly, a proper support frame is erected, and the dismantling sequence of the frame beams around the prestressed beam is reasonably planned according to the stress performance of the structure. The prestressed beam is firstly dismantled, and then the main beam of the frame connected with the prestressed beam end is dismantled.
By adopting the construction method, the noise is low, the dust emission is less, and the environmental protection requirement is met. The tradition can produce very big noise when demolising the concrete structure operation, and the raise dust pollutes seriously, and the quiet power is demolishd the technique and can be taken away the abrasive dust that produces through the cooling water, and no raise dust produces basically. The whole cutting work is driven by a hydraulic motor, the hydraulic pump operates stably, and the noise and the vibration in the whole cutting process are very small;
construction is convenient and efficient. The cutting is not limited by the size and the shape of the cutting body, and the cutting can be carried out in any direction, such as a diagonal direction, a vertical direction, a transverse direction and the like. The static force dismantling speed is high, the efficiency is high and is incomparable with other dismantling modes, and the use of the static force dismantling is beneficial to the advance of the construction period;
the structure installation is simple, the work danger is small, and the safety and reliability are high. The static force dismantling is safe, reliable and stable, so that the loss cost of construction equipment is greatly reduced, and meanwhile, the static force dismantling can be operated remotely, and the dismantling work which is difficult to complete by common equipment and technology in certain specific environments of a dangerous operation area is realized;
wide construction range and no damage to the reserved structure. The concrete structure with large size is integrally separated in small area and large volume, and has neat separation surface, so that the structure quality of the reserved part is not influenced, and the subsequent reinforcement work is not influenced.
The main technical indexes are as follows:
the rope type cutting machine comprises:
pure cutting speed: 40-60 minutes per section; installation time: 20 to 40 minutes/time
Wall saw machine:
pure cutting speed: 2 hours per section; installation time: 10 minutes/time
According to the cutting building position and the requirement of the site construction process, when the single building is dismantled, the single building is cut from the upper layer to the lower layer, the single building is dismantled from outside to inside in each layer, and the single building is mainly divided into 7 areas. The cutting is mainly performed by wall saw cutting or rope cutting. And removing the concrete blocks and hoisting by using a truck crane. According to the hoisting performance table of the truck crane, the hoisting weight for removing the mixed solidification block in the project is specified as follows: when cutting, the weight of each section of hanging block is strictly controlled to be not more than 1.5 tons, and the weight of each section of hanging block is not more than 300kg during manual transportation.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A static force dismantling construction process for a concrete structure of a continuous construction project is characterized by comprising the following construction steps:
s110, building edge protection;
s120, partitioning on a construction drawing, and snapping line marks on the concrete structure by contrasting with the drawing;
s130, erecting a full-hall support frame;
s140, performing cutting construction on the diamond chain rope;
s150, constructing a wall saw cutting machine;
s160, cutting the plate;
s170, cutting a beam;
s180, cutting the column;
and S190, cutting stairs.
2. The static force dismantling construction process of the concrete structure of the continuous construction project according to claim 1, characterized in that: in step S110, the temporary edge protection is set up around the to-be-dismantled position, and a warning mark is set, with a height of 1.5 m.
3. The static force dismantling construction process of the concrete structure of the continuous construction project according to claim 1, characterized in that: in the step S120, the cutting size of the floor slab is 0.6 × 0.6 square meter to 1.0 × 1.0 square meter; when the cross-sectional dimension of the beam is not more than 0.4X 0.7 square meter, the cutting length is not more than 2m, and when the cross-sectional dimension of the beam is more than 0.4X 0.7 square meter, the cutting length is not more than 1.5 m.
4. The static force dismantling construction process of the concrete structure of the continuous construction project according to claim 1, characterized in that: in step S140, the following operations are included:
operation S141, laying pipelines of a power supply and a water source on a construction site;
operation S142, dividing the partitioning cutting lines on the beam to be cut;
operation S143, drilling a through hole for sleeving the diamond rope on the wall at the cutting line junction of the support beam by using a drilling machine, wherein the diameter of the through hole is not less than 108 mm;
operation S144, switching on a water source and a power source on the cutter;
operation S145, connecting a diamond rope on the cutting machine in a penetrating manner, and connecting a joint by using a hydraulic clamp;
and operation S146, turning on a water source, adjusting the water flow, and simultaneously controlling the cutting machine to tighten the diamond rope, so that the cutting operation can be started.
5. The static force dismantling construction process of the concrete structure of the continuous construction project according to claim 1, characterized in that: the step S150 includes the following operations:
operation S151, laying water pipes and electric wires on a construction site;
operation S152, dividing cutting lines on the floor to be cut;
operation S153, cutting the branch cutter by using a wall saw according to the position of the cutting line;
operation S154, drilling hoisting holes on the single floor after the cutter splitting, wherein the hoisting holes are symmetrically arranged on the single floor;
and S155, penetrating a lifting rope on the single floor slab, and adjusting away the cutting position.
6. The static force dismantling construction process of the concrete structure of the continuous construction project according to claim 1, characterized in that: in step S160, the following operations are included:
operation S161, determining a side line of the spring beam, wherein the side line position of the spring beam is 100mm of the outward expansion of the cutting line position;
operation S162 of determining a cutting line of the springboard;
operation S163, springing the hoisting hole line, and drilling the hoisting hole by using a rhinestone;
operation S164, cutting a tangent line passing through the hoisting hole, and then installing a sling in the hoisting hole;
operation S165 cuts the periphery of the target plate, and turns away after the target plate is completely separated from the original structure.
7. The static force dismantling construction process of the concrete structure of the continuous construction project according to claim 1, characterized in that: in the step S170, when the beam is cut, the target beam is divided into odd number sections, and the middle section is cut first, and the middle section is bound with a sling in the cutting process, and both sides of the middle section are cut simultaneously.
8. The static force dismantling construction process of the concrete structure of the continuous construction project according to claim 1, characterized in that: the step S190 includes the following operations:
operation S191, dismantling the stair tread;
operation S192, removing the landing slab;
operation S193, dismantling the stair beam;
and operation S194, removing the stair support column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010788385.8A CN111877798A (en) | 2020-08-07 | 2020-08-07 | Static force dismantling construction process for concrete structure of continuous construction project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010788385.8A CN111877798A (en) | 2020-08-07 | 2020-08-07 | Static force dismantling construction process for concrete structure of continuous construction project |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111877798A true CN111877798A (en) | 2020-11-03 |
Family
ID=73211036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010788385.8A Pending CN111877798A (en) | 2020-08-07 | 2020-08-07 | Static force dismantling construction process for concrete structure of continuous construction project |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111877798A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112793005A (en) * | 2020-12-21 | 2021-05-14 | 中铁一局集团电务工程有限公司 | Static force cutting method for concrete structure |
| CN112963015A (en) * | 2021-03-15 | 2021-06-15 | 中国建筑第八工程局有限公司 | Tunnel dismantling construction method in collinear connection with existing subway line below |
| CN113431364A (en) * | 2021-06-28 | 2021-09-24 | 中煤地建设工程有限公司 | Old building dismantling and reforming process |
| CN114293813A (en) * | 2021-12-20 | 2022-04-08 | 中建二局装饰工程有限公司 | Floor slab cutting and reinforcing structure and construction method |
| CN114482618A (en) * | 2022-01-05 | 2022-05-13 | 中核华辰建筑工程有限公司 | Construction method for static force demolition of reinforced concrete structure |
| CN114541807A (en) * | 2022-03-23 | 2022-05-27 | 中建八局第三建设有限公司 | Static breaking construction method for reinforced concrete structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2010240990A (en) * | 2009-04-06 | 2010-10-28 | Shimizu Corp | Cutting method of concrete |
| CN102808526A (en) * | 2011-06-01 | 2012-12-05 | 永升建设集团有限公司 | Nondestructive demolition construction method of reinforced concrete frame beam |
| CN103291085A (en) * | 2013-06-07 | 2013-09-11 | 陈春来 | Concrete static force cutting dismantling construction method |
| CN108193894A (en) * | 2017-12-05 | 2018-06-22 | 深圳市工勘岩土集团有限公司 | The construction method of rope saw dismantling concrete wall |
| CN109252693A (en) * | 2018-08-28 | 2019-01-22 | 上海建工七建集团有限公司 | Concrete support system mechanical coupling segment cutting construction method without support collet |
| CN110512895A (en) * | 2019-08-22 | 2019-11-29 | 温州金茂建设有限公司 | A kind of high-rise cast-in-place concrete building demolition construction method |
-
2020
- 2020-08-07 CN CN202010788385.8A patent/CN111877798A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010240990A (en) * | 2009-04-06 | 2010-10-28 | Shimizu Corp | Cutting method of concrete |
| 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 |
| CN102808526A (en) * | 2011-06-01 | 2012-12-05 | 永升建设集团有限公司 | Nondestructive demolition construction method of reinforced concrete frame beam |
| CN103291085A (en) * | 2013-06-07 | 2013-09-11 | 陈春来 | Concrete static force cutting dismantling construction method |
| CN108193894A (en) * | 2017-12-05 | 2018-06-22 | 深圳市工勘岩土集团有限公司 | The construction method of rope saw dismantling concrete wall |
| CN109252693A (en) * | 2018-08-28 | 2019-01-22 | 上海建工七建集团有限公司 | Concrete support system mechanical coupling segment cutting construction method without support collet |
| CN110512895A (en) * | 2019-08-22 | 2019-11-29 | 温州金茂建设有限公司 | A kind of high-rise cast-in-place concrete building demolition construction method |
Non-Patent Citations (1)
| Title |
|---|
| 徐云飞等: "深基坑钢筋混凝土支撑拆除技术应用", 《工程建设与设计》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112793005A (en) * | 2020-12-21 | 2021-05-14 | 中铁一局集团电务工程有限公司 | Static force cutting method for concrete structure |
| CN112963015A (en) * | 2021-03-15 | 2021-06-15 | 中国建筑第八工程局有限公司 | Tunnel dismantling construction method in collinear connection with existing subway line below |
| CN113431364A (en) * | 2021-06-28 | 2021-09-24 | 中煤地建设工程有限公司 | Old building dismantling and reforming process |
| CN114293813A (en) * | 2021-12-20 | 2022-04-08 | 中建二局装饰工程有限公司 | Floor slab cutting and reinforcing structure and construction method |
| CN114482618A (en) * | 2022-01-05 | 2022-05-13 | 中核华辰建筑工程有限公司 | Construction method for static force demolition of reinforced concrete structure |
| CN114541807A (en) * | 2022-03-23 | 2022-05-27 | 中建八局第三建设有限公司 | Static breaking construction method for reinforced concrete structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111877798A (en) | Static force dismantling construction process for concrete structure of continuous construction project | |
| CN105220894B (en) | Inner support rope saws lossless cutting disassembling structure and construction thereof | |
| CN110512895A (en) | A kind of high-rise cast-in-place concrete building demolition construction method | |
| CN101748758B (en) | Timbering method of foundation ditches for reforming on-line equipment foundations in factory buildings | |
| CN102808526A (en) | Nondestructive demolition construction method of reinforced concrete frame beam | |
| CN108386007B (en) | Construction method for directionally dismantling large-volume reinforced concrete by using wire saw | |
| CN104947926A (en) | Core tube inner tank upper formwork system hard protection device and construction method thereof | |
| CN105089178B (en) | A kind of pre-splicing Standard formula building of prefabricated steel reinforced concrete shear walls | |
| CN103711327A (en) | Method for joist reinforcement during demolition of lower portion of masonry bearing wall | |
| CN110905232A (en) | Mechanical static force dismantling method for concrete structure | |
| CN111335672A (en) | Diamond wire saw cutting construction method | |
| CN113550349A (en) | Assembly type subway station and construction method thereof | |
| CN117166814A (en) | Multi-high-rise reinforced concrete bearing wall self-supporting structure and construction method thereof | |
| CN209837765U (en) | Reversal dismantling temporary support conversion device for reinforced concrete structure | |
| CN102787594A (en) | Dry-boring rapid construction method for cast-in-place pile | |
| CN114875813B (en) | Construction equipment and construction method for dismantling and rebuilding reinforced concrete steel frame arch bridge | |
| CN112227814B (en) | Method for dismantling straight-barrel type concrete tower body | |
| CN112793005A (en) | Static force cutting method for concrete structure | |
| CN111997063A (en) | Static cutting method for pre-buried pipe-penetrating type concrete structure | |
| CN107761741A (en) | One kind manually abolishes inner support beam method | |
| CN210507094U (en) | Cable tower lower beam embedded steel bar supporting system | |
| CN211547739U (en) | Supporting structure for rope saw static force cutting reinforced concrete inner support | |
| CN113356215A (en) | Cutting construction method and cutting device for rock platform of underground factory building rock wall crane beam | |
| CN102277981A (en) | Underwater drilling and cutting construction method of reinforced concrete structure | |
| CN105888595A (en) | Special device and method for fishing drill bit of rotary drilling rig in case of drilling blocking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201103 |
|
| RJ01 | Rejection of invention patent application after publication |