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Design and Numerical Simulation of 180 m-High Reinforced Concrete Chimney Directional Blasting Demolition
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Jian-cheng LIU1, Yi LI2, Zhi-yuan XIA3, Fan YANG3, Gang WANG4, Ling YANG3, Li-fei MA3, Wei ZHANG3, Peng-fei GAO3
Blasting | 2025, 42(3) : 135 - 144
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Blasting | 2025, 42(3): 135-144
• EXPLOSIVE DEMOLITION •
Design and Numerical Simulation of 180 m-High Reinforced Concrete Chimney Directional Blasting Demolition
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Jian-cheng LIU1, Yi LI2, Zhi-yuan XIA3, Fan YANG3, Gang WANG4, Ling YANG3, Li-fei MA3, Wei ZHANG3, Peng-fei GAO3
Affiliations
  • 1.SINOHYDRO BUREAU 8 Co., Ltd., Changsha 410000, China
  • 2.School of Safety Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • 3.Anhui Jiangnan Blasting Engineering Co., Ltd., Xuancheng 242300, China
  • 4.Anhui Jiangnan Chemical Co., Ltd., Hefei 230000, China
Published: 2025-06-15 doi: 10.3963/j.issn.1001-487X.2025.03.015
Outline
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This study investigates the blasting demolition of a 180 m-high reinforced concrete chimney under site-specific conditions, systematically addressing critical challenges in collapse control through targeted engineering solutions. By designing symmetrically arranged directional and positioning windows, combined with empirical formula calculations, optimal blasting parameters were determined to be a 216 central angle and a 3.5 m cut height, effectively guiding the chimney's collapse along the predetermined trajectory without significant backward displacement. A 1:1 scale numerical model employing the Interface Stress Element Method was developed to simulate the collapse process, showing complete structural failure within 14.0 seconds with controlled lateral deviation (<0.5%) and minimal settlement/forward surge. A comparative analysis with the Decoupled Co-node Model revealed the superior performance of the Interface Stress Element Method in simulating rebar-concrete decoupling at cut closures, reducing backward displacement by approximately 1.0 m through differentiated load-bearing mechanisms at material component nodes. The model successfully replicated restrained rebar scattering during top section ground impact, due to the bonding forces of the spring elements, confirming enhanced simulation accuracy in collapse kinematics. Field implementation validated the numerical predictions, achieving precise directional collapse, complete structural disintegration, and compliance with safety thresholds, thereby establishing a replicable framework for ultra-high chimney demolition engineering.

tall structures  /  reinforced concrete structures  /  blasting demolition  /  numerical simulation  /  interface stress element method
Jian-cheng LIU, Yi LI, Zhi-yuan XIA, Fan YANG, Gang WANG, Ling YANG, Li-fei MA, Wei ZHANG, Peng-fei GAO. Design and Numerical Simulation of 180 m-High Reinforced Concrete Chimney Directional Blasting Demolition[J]. Blasting, 2025 , 42 (3) : 135 -144 . DOI: 10.3963/j.issn.1001-487X.2025.03.015
Funding
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  • Special fund support for basic scientific research business expenses of central universities(30923010308)
  • State-funded postdoctoral researcher program(GZC20242240)
  • Jiangsu Excellent Postdoctoral Program(2024ZB339)
Appendix
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Year 2025 volume 42 Issue 3
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152
72
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Article Info
doi: 10.3963/j.issn.1001-487X.2025.03.015
  • Receive Date：2024-11-29
  • Online Date：2026-03-17
  • Published：2025-06-15
Article Data
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History
  • Received：2024-11-29
Funding
Special fund support for basic scientific research business expenses of central universities(30923010308)
State-funded postdoctoral researcher program(GZC20242240)
Jiangsu Excellent Postdoctoral Program(2024ZB339)
Affiliations
    1.SINOHYDRO BUREAU 8 Co., Ltd., Changsha 410000, China
    2.School of Safety Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
    3.Anhui Jiangnan Blasting Engineering Co., Ltd., Xuancheng 242300, China
    4.Anhui Jiangnan Chemical Co., Ltd., Hefei 230000, China

Corresponding:

LI Yi (1995-), male, doctor, assistant researcher, engaged in safety engineering and blasting technology research, (E-mail) .
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https://castjournals.cast.org.cn/joweb/bp/EN/10.3963/j.issn.1001-487X.2025.03.015
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
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Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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