CN109933894A - A kind of towering structure mechanical removal method based on numerical simulation - Google Patents
A kind of towering structure mechanical removal method based on numerical simulation Download PDFInfo
- Publication number
- CN109933894A CN109933894A CN201910184642.4A CN201910184642A CN109933894A CN 109933894 A CN109933894 A CN 109933894A CN 201910184642 A CN201910184642 A CN 201910184642A CN 109933894 A CN109933894 A CN 109933894A
- Authority
- CN
- China
- Prior art keywords
- notch
- towering structure
- mechanical
- towering
- direction line
- 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
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000004088 simulation Methods 0.000 title claims abstract description 42
- 238000010276 construction Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000013461 design Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 239000011150 reinforced concrete Substances 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 3
- 201000004569 Blindness Diseases 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The towering structure mechanical removal method based on numerical simulation that the invention discloses a kind of, include the following steps: the related data for finding out the towering structure that modeling needs, establish the model of towering structure, the position of selected simulation notch, select notch length when towering structure is toppled over, it determines and removes collapse direction, then the positioning of notch scene, notch mechanical treatment to towering structure are smoothly toppled over.The present invention is based on principles above, towering structure is carried out using ANSYS/LS-DYNA numerical simulation software to topple over simulation, optimal notch length is determined by numerical simulation, then notch processing is carried out using mechanical, to reach safety, controllable construction requirement, the falling and detaching for realizing towering structure efficiently solves mechanical removal blindly construction, the uncontrollable disadvantage of safety factor, realizes towering structure mechanical removal operation safety, controllable, at low cost, fireballing requirement.
Description
Technical field
The invention belongs to technical field of building construction, and in particular to a kind of towering structure machinery based on numerical simulation is torn open
Except method.
Background technique
With the continuous development of society, towering structure in city, such as old chimney, water tower and cooling tower etc. are
Be not suitable with urban development needs, seriously affect environment or city appearance, therefore, these towering structures with city continuous liter
Grade transformation will move out the arena of history.The method that towering structure is removed at present mainly has manual demolition, mechanical removal and explosion to tear open
Except three kinds: 1) manual demolition operating personnel should stand and operate in stable structure or scaffold, and the dismounting time is long, manually
Cost is high；2) mechanical removal dismounting speed is fast, at low cost, but safety factor is more difficult to control, and there are blindness for construction, constructs
Object collapses time point more difficult prediction；3) demolition blasting speed of application is very fast, and safety factor is relatively controllable, can accurately be determined
When demolition blasting, but bursting work is carried out in city, examination and approval procedures are relative complex, and safety management requires high, construction cost
Also relatively high.Therefore, it designs a kind of method for dismounting at low cost, easy to operate, that security performance is high and seems and be even more important.
Summary of the invention
For the above-mentioned problems in the prior art, the purpose of the present invention is to provide a kind of height based on numerical simulation
Structures mechanical removal method is alarmmed, the present invention carries out towering structure by using ANSYS/LS-DYNA numerical simulation software
Topple over simulation, determine most suitable notch length, then mechanical removal operation is carried out to towering structure, have abolish speed it is fast,
Labor intensity is low, cost is light, safe and reliable, and influences the advantages that small to periphery.
A kind of towering structure mechanical removal method based on numerical simulation, it is characterised in that including walking as follows
It is rapid:
1) former construction drawing is found out and consulted, the design and construction situation of towering structure is understood, then detects towering construct at the scene
The related data of object provides initial data for numerical simulation；
2) notch numerical simulation is handled
First according to the construction drawing in step 1) and obtained data, the model of towering structure is established, selectes simulation notch
Position is respectively adopted different circumferences as notch length, is constructed using ANSYS/LS-DYNA numerical simulation software to towering
Object carries out toppling over simulation, until towering structure is toppled over, according to analog result, notch length when towering structure is toppled over is made
Operation notch length when to remove；
3) determine that removing collapse direction toppling direction is to handle notch centerline direction, according to the practical surrounding enviroment feelings in scene
Condition selects the direction of place spaciousness to be toppled over, and needs building, pipeline and other important equipment facilities to be protected to surrounding
It is protected；
4) positioning of notch scene draws toppling direction line and notch model according to the gap position of step 2 on towering structure
Contour；
5) notch processing uses mechanical equipment in toppling direction line two sides bilateral symmetry break process, until notch is all broken
It completes；
6) safety is toppled over mechanical equipment and is withdrawn from the trailing flank of toppling direction line, and towering structure is smoothly toppled over.
A kind of towering structure mechanical removal method based on numerical simulation, it is characterised in that the phase in step 1)
Close data include concrete actual strength detection, arrangement of reinforcement situation, structure whether weathering, if there are weak spots etc..
A kind of towering structure mechanical removal method based on numerical simulation, it is characterised in that in step 2 respectively
Using 1/4,1/3,1/2,2/3 circumference as notch length, cut height is 5-10 times of towering structure wall thickness.
A kind of towering structure mechanical removal method based on numerical simulation, it is characterised in that high in step 2
When towering structures have the special constructions such as bottom flue or platform, the bottom edge of notch is far from bottom flue or at least 1 meter of platform upper.
A kind of towering structure mechanical removal method based on numerical simulation, it is characterised in that the machine in step 5)
Tool equipment is long-armed pick machine.
A kind of towering structure mechanical removal method based on numerical simulation, it is characterised in that on a left side in step 5)
When the processing of right alternating mechanical, mechanical equipment track route is the back side of toppling direction, specific mechanical to ensure work progress safety
Processing step is as follows:
1) notch length is equally divided into 8 parts, from toppling direction line side to notch left and right side, respectively 1/4 notch length,
1/8 notch length, 1/8 notch length；
2) first mechanical equipment is moved on the left of towering structure, 1/4 notch length on the left of break process toppling direction line；
3) mechanical equipment is run on the right side of toppling direction line from towering structure back side, 1/ on the right side of break process toppling direction line
4 notch lengths；
4) mechanical to be returned on the left of toppling direction line from towering structure back side, 1/8 notch on the left of break process toppling direction line
Length；
5) mechanical to be returned on the right side of toppling direction line from towering structure back side, 1/8 notch on the right side of break process toppling direction line
Length；
6) mechanical to be returned on the left of toppling direction line from towering structure back side, remaining 1/8 on the left of break process toppling direction line
Notch length；
7) mechanical to be returned on the right side of toppling direction line from towering structure back side, remaining 1/8 on the right side of break process toppling direction line
Notch length completes all design notch breakage processing.
Principle is toppled in towering structure dismounting, i.e., sufficiently long notch is handled in the way of mechanical or explosion etc., so that structure
It builds object and topples over torque using the weight formation of its own, under the action of toppling over torque, using notch reservation part-structure as fulcrum,
It is rotated around neutral axis, to complete falling and detaching, the present invention is based on principles above, soft using ANSYS/LS-DYNA numerical simulation
Part carries out towering structure to topple over simulation, determines optimal notch length by numerical simulation, is then carried out using machinery scarce
Mouth processing realizes the falling and detaching of towering structure, efficiently solves machinery and tear open to reach safety, controllable construction requirement
Except blindness construction, the uncontrollable disadvantage of safety factor, realize towering structure mechanical removal operation safety, it is controllable, at low cost,
Fireballing requirement.
Detailed description of the invention
Fig. 1 is Demolition Construction structural schematic diagram of the invention；
Fig. 2 is the 1-1 the schematic diagram of the section structure of first embodiment in Fig. 1；
Fig. 3 is the 1-1 the schematic diagram of the section structure of second embodiment in Fig. 1；
Fig. 4 is the 1-1 the schematic diagram of the section structure of 3rd embodiment in Fig. 1；
Fig. 5 is the 1-1 the schematic diagram of the section structure of fourth embodiment in Fig. 1；
Fig. 6 is towering structure facade deployed configuration schematic diagram of the invention；
Fig. 7 is towering structure mechanical execution step schematic diagram of the invention；
Fig. 8 is towering structure toppling process schematic diagram of the invention.
In figure: 1- towering structure, 2- notch, 21- notch bottom edge, 3- fulcrum, 4- toppling direction line, L- notch length,
H- cut height.
Specific embodiment
Below in conjunction with Figure of description and embodiment, the invention will be further described, but protection scope of the present invention is simultaneously
It is not limited only to this:
As shown in figures 1-8, the towering structure mechanical removal method of the invention based on numerical simulation, includes the following steps:
1) former construction drawing is found out and consults, the design and construction situation of towering structure required for understanding, then detection is high at the scene
Alarm the related data of structures 1, including the detection of concrete actual strength, arrangement of reinforcement situation, structure whether weathering, with the presence or absence of weak
Point provides initial data for numerical simulation, wherein structure whether weathering and with the presence or absence of weak spot pass through artificial eye observe；
2) notch numerical simulation is handled
The data first obtained according to step 1), establish the model of towering structure, then simulation is selected on towering structure model
The position of notch, the i.e. position on notch bottom edge 21, general notch bottom edge 21 is away from towering structure bottom at least 1 meter, preferably 1.5
Rice, if when the special constructions such as flue or platform, the bottom edge of notch is far from bottom flue or platform upper at least 1 meter, preferably 1.5
Rice, is respectively adopted different circumferences as notch length, using ANSYS/LS-DYNA numerical simulation software to towering structure
It carries out toppling over simulation, according to analog result, determines the minimum notch length realized and toppled over, the minimum notch length conduct of the determination
Operation notch length when dismounting, in the embodiment of the present invention, be respectively adopted 1/4,1/3,1/2,2/3 circumference it is long as notch
L is spent, cut height h is 5-10 times of towering structure wall thickness, and such as towering construction of required dismounting is chimney, and wall thickness is
0.2m, then cut height h can use 1-2m, and 2 shape of notch is as shown in Figure 2-5；
3) determine that removing collapse direction toppling direction is to handle notch centerline direction, according to the practical surrounding enviroment feelings in scene
Condition selects the direction of place spaciousness to be toppled over, and needs building, pipeline and other important equipment facilities to be protected to surrounding
It is protected；
4) positioning of notch scene draws toppling direction line 4(i.e. notch according to the gap position of step 2 on towering structure
Center line) and breach scope line；
5) physical notches processing uses mechanical equipment in toppling direction line two sides bilateral symmetry break process, until notch 2 is all
It is broken to complete；The mechanical equipment that the present invention uses is long-armed pick machine, when left and right alternating mechanical is handled, mechanical equipment track route
For the back side of toppling direction, to ensure that work progress is safe, specific mechanical treatment step is as follows:
5.1) 2 length of notch is equally divided into 8 parts, from toppling direction line respectively toward notch left and right side, every side is from centre to side
Edge, respectively 1/4L, 1/8 L, 1/8 L；
5.2) mechanical equipment is first moved into 1 left side of towering structure, 1/4 L on the left of break process toppling direction line；
5.3) mechanical equipment is run on the right side of toppling direction line from towering structure back side, on the right side of break process toppling direction line
1/4 L；
5.4) mechanical to be returned on the left of toppling direction line from towering structure back side, 1/8 L on the left of break process toppling direction line；
5.5) mechanical to be returned on the right side of toppling direction line from towering structure back side, 1/8 L on the right side of break process toppling direction line；
5.6) mechanical to be returned on the left of toppling direction line from towering structure back side, remaining 1/ on the left of break process toppling direction line
8 L；
5.7) mechanical to be returned on the right side of toppling direction line from towering structure back side, remaining 1/ on the right side of break process toppling direction line
8 L complete all design notch breakage processing；
6) safety, which is toppled over, retains part-structure as fulcrum 3 using notch 2, and around neutral axis rotation, mechanical equipment is from toppling direction line
Trailing flank is withdrawn, and towering structure is smoothly toppled over.
Embodiment:
As shown in FIG. 7 and 8, to need certain the factory's reinforced concrete chimney removed, height 45m, base diameter 4.35m are pushed up
Portion diameter 1.6m, wall thickness 0.48m, the chimney are removed because of plant area's transformation.In order to ensure safety, we use one kind
Towering structure mechanical removal method based on numerical simulation carries out chimney demolition.Firstly, we are to reinforced concrete chimney
Intensity carries out field measurement, is 5MPa by detection concrete strength about 35MPa tensile strength.Chimney structure is intact, without serious
Weathering situation.By data check, the density of reinforced concrete chimney takes 2500Kg/m3, and elastic modulus E takes 35Gpa.The above number
According to as numerical simulation basic data.Secondly, carrying out the board design of notch treated length.Since the rigidity of chimney is bigger, it is
Simulation workload is reduced, our first steps take 1/3 circumferential notch to carry out numerical simulation, and analog result chimney does not fall
It collapses；Second step carries out numerical simulation using 1/2 circumferential notch, and model configuration chimney is collapsed, then it is long to topple over minimum notch
Degree L takes 1/2 circumferential notch.I.e. processing notch central angle is 180 degree, and it is 1.4m that cut height, which takes 5 times of wall thickness,.Then, according to existing
Field situation ensures collapse direction；Due to this engineering the south place spaciousness, it is not necessarily to protected object, therefore is selected in the south for toppling direction；
Further according to toppling direction, notch center line is drawn on chimney.According to center line, processing notch length is drawn in chimney length；Most
Afterwards, notch is handled in chimney side using long-armed pick machine.Mechanical treatment step is generally as follows: the first step, is crushed place
Reason left side 1/4L；Second step, it is mechanical to run to right side from back side, handle 1/4L；Third step, it is mechanical to return to left side, place from back side
Manage 1/8L；4th step, machinery return to right side, handle 1/8L；5th step, machinery return to left side, handle residue 1/8L；6th step,
Machinery returns to right side, handles residue 1/8L；All design notch breakage processing are completed, finally, retaining part-structure with notch 2 is
Fulcrum 3 is rotated around neutral axis, and mechanical equipment is withdrawn from the trailing flank of toppling direction line, and towering structure is smoothly toppled over, such as Fig. 8
It is shown, it is successfully realized reinforced concrete chimney and removes work safely.
Claims (6)
1. a kind of towering structure mechanical removal method based on numerical simulation, it is characterised in that include the following steps:
1) former construction drawing is found out and consulted, the design and construction situation of towering structure is understood, then detects towering construct at the scene
The related data of object provides initial data for numerical simulation；
2) notch numerical simulation is handled
First according to the construction drawing in step 1) and obtained data, the model of towering structure is established, selectes simulation notch
Position is respectively adopted different circumferences as notch length, is constructed using ANSYS/LS-DYNA numerical simulation software to towering
Object carries out toppling over simulation, until towering structure is toppled over, according to analog result, notch length when towering structure is toppled over is made
Operation notch length when to remove；
3) determine that removing collapse direction toppling direction is to handle notch centerline direction, according to the practical surrounding enviroment feelings in scene
Condition selects the direction of place spaciousness to be toppled over, and needs building, pipeline and other important equipment facilities to be protected to surrounding
It is protected；
4) positioning of notch scene draws toppling direction line and notch model according to the gap position of step 2 on towering structure
Contour；
5) notch processing uses mechanical equipment in toppling direction line two sides bilateral symmetry break process, until notch is all broken
It completes；
6) safety is toppled over mechanical equipment and is withdrawn from the trailing flank of toppling direction line, and towering structure is smoothly toppled over.
2. a kind of towering structure mechanical removal method based on numerical simulation according to claim 1, it is characterised in that
Related data in step 1) include concrete actual strength detection, arrangement of reinforcement situation, structure whether weathering, if there are weak spots
Deng.
3. a kind of towering structure mechanical removal method based on numerical simulation according to claim 1, it is characterised in that
1/4,1/3,1/2,2/3 circumference is respectively adopted in step 2 as notch length, cut height is towering structure wall thickness
5-10 times.
4. a kind of towering structure mechanical removal method based on numerical simulation according to claim 1, it is characterised in that
In step 2, when towering structure has the special constructions such as bottom flue or platform, the bottom edge of notch is far from bottom flue or platform
At least 1 meter of portion.
5. a kind of towering structure mechanical removal method based on numerical simulation according to claim 1, it is characterised in that
Mechanical equipment in step 5) is long-armed pick machine.
6. a kind of towering structure mechanical removal method based on numerical simulation according to claim 1, it is characterised in that
In step 5) in the processing of left and right alternating mechanical, mechanical equipment track route is the back side of toppling direction, to ensure work progress
Safety, specific mechanical treatment step are as follows:
1) notch length is equally divided into 8 parts, from toppling direction line side to notch left and right side, respectively 1/4 notch length,
1/8 notch length, 1/8 notch length；
2) first mechanical equipment is moved on the left of towering structure, 1/4 notch length on the left of break process toppling direction line；
3) mechanical equipment is run on the right side of toppling direction line from towering structure back side, 1/ on the right side of break process toppling direction line
4 notch lengths；
4) mechanical to be returned on the left of toppling direction line from towering structure back side, 1/8 notch on the left of break process toppling direction line
Length；
5) mechanical to be returned on the right side of toppling direction line from towering structure back side, 1/8 notch on the right side of break process toppling direction line
Length；
6) mechanical to be returned on the left of toppling direction line from towering structure back side, remaining 1/8 on the left of break process toppling direction line
Notch length；
7) mechanical to be returned on the right side of toppling direction line from towering structure back side, remaining 1/8 on the right side of break process toppling direction line
Notch length completes all design notch breakage processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910184642.4A CN109933894A (en) | 2019-03-12 | 2019-03-12 | A kind of towering structure mechanical removal method based on numerical simulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910184642.4A CN109933894A (en) | 2019-03-12 | 2019-03-12 | A kind of towering structure mechanical removal method based on numerical simulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109933894A true CN109933894A (en) | 2019-06-25 |
Family
ID=66987078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910184642.4A Pending CN109933894A (en) | 2019-03-12 | 2019-03-12 | A kind of towering structure mechanical removal method based on numerical simulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109933894A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127697A (en) * | 2020-09-27 | 2020-12-25 | 广西建工集团冶金建设有限公司 | Dismantling method of reinforced concrete chimney |
| CN113338665A (en) * | 2021-06-10 | 2021-09-03 | 中铁六局集团石家庄铁路建设有限公司 | Cooling tower dismantling method |
| CN114417462A (en) * | 2021-12-29 | 2022-04-29 | 厦门安科科技有限公司 | Control method and control device of building dismantling machine based on regulation and control of Internet of things |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752383A (en) * | 2005-10-31 | 2006-03-29 | 曲昕 | Directioning falling and detaching method for chimney-like building |
| CN106599441A (en) * | 2016-12-09 | 2017-04-26 | 西京学院 | Anti-collapse security evaluation method for self-support communication tower |
| CN107882356A (en) * | 2017-11-09 | 2018-04-06 | 河南理工大学 | A kind of mechanical removal construction method of cooling tower |
-
2019
- 2019-03-12 CN CN201910184642.4A patent/CN109933894A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752383A (en) * | 2005-10-31 | 2006-03-29 | 曲昕 | Directioning falling and detaching method for chimney-like building |
| CN106599441A (en) * | 2016-12-09 | 2017-04-26 | 西京学院 | Anti-collapse security evaluation method for self-support communication tower |
| CN107882356A (en) * | 2017-11-09 | 2018-04-06 | 河南理工大学 | A kind of mechanical removal construction method of cooling tower |
Non-Patent Citations (4)
| Title |
|---|
| 叶海旺等: "基于LS-DYNA的砖烟囱爆破拆除模拟研究", 《爆破》 * |
| 许名标等: "钢筋混凝土烟囱定向倾倒数值模拟分析", 《人民长江》 * |
| 贾虎等: "钢筋混凝土高耸构筑物爆破切口参数计算的探讨", 《工程爆破》 * |
| 陈艳丹等: "钢筋混凝土框架结构机械拆除施工仿真模拟", 《西南科技大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127697A (en) * | 2020-09-27 | 2020-12-25 | 广西建工集团冶金建设有限公司 | Dismantling method of reinforced concrete chimney |
| CN113338665A (en) * | 2021-06-10 | 2021-09-03 | 中铁六局集团石家庄铁路建设有限公司 | Cooling tower dismantling method |
| CN114417462A (en) * | 2021-12-29 | 2022-04-29 | 厦门安科科技有限公司 | Control method and control device of building dismantling machine based on regulation and control of Internet of things |
| CN114417462B (en) * | 2021-12-29 | 2024-05-14 | 厦门安科科技有限公司 | Control method and control device of building dismantling machine based on Internet of things regulation and control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109933894A (en) | A kind of towering structure mechanical removal method based on numerical simulation | |
| CN108166500A (en) | A kind of cutting disassembling of deep foundation ditch concrete near a river and recovery method | |
| CN101963060B (en) | Tunnel construction method based on steel tube arch-rib supporting structure | |
| CN105442865B (en) | A kind of piecewise method for dismounting of high chimney and its equipment | |
| CN102808526A (en) | Nondestructive demolition construction method of reinforced concrete frame beam | |
| CN207005565U (en) | A kind of non-excavation rehabilitation caves in the collapsible steel loop of pipeline | |
| CN105157491A (en) | Blasting method for forming dome through tunnel large section | |
| CN106522581A (en) | Method for demolish chimney manually | |
| CN110206144A (en) | A kind of construction method of reinforced concrete column bean column node | |
| CN105239582B (en) | Construction method applicable to constructing special-shaped big deep crossing joint foundation pit annular support | |
| CN104480931A (en) | Fast file head removing method for mechanical pore forming pouring pile | |
| CN107905127B (en) | A kind of low vibration global orientation method for dismounting suitable for bridge pier column | |
| CN103088832B (en) | Annular type impact method for digging rock at bottom of drilled pile shaft | |
| CN105239583B (en) | Suitable for the construction method that special-shaped deep big crossover node foundation ditch annular brace is removed | |
| CN106049503A (en) | Pretreatment method for blasting demolition of reinforced concrete supporting beam in foundation pit | |
| CN103422508A (en) | Mechanical stuffy demolition method and structure of inner supporting platform structure of deep foundation pit | |
| CN104499490A (en) | Large-span steel support multidirectional connecting piece and large-span deep foundation pit support construction method | |
| CN213626685U (en) | Portable form removal tool for composite material template | |
| CN103726674B (en) | Lattice column method for dismounting | |
| JP6343039B1 (en) | Dismantling method of turbine facility | |
| CN207620429U (en) | The constructing structure of rope saw dismantling concrete wall | |
| CN112144913A (en) | Large storage tank wall dismantling process | |
| CN113338665A (en) | Cooling tower dismantling method | |
| CN111054993B (en) | Cutting method of circular steel tube | |
| CN102277957B (en) | Overhaul platform of desulfurizing tower |
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: 20190625 |
|
| RJ01 | Rejection of invention patent application after publication |