10 Whole-building response to blast damage

2009 ◽  
pp. 216-249
Author(s):  
David Cormie
Keyword(s):  
Blast Damage

Correlations of blast damage to ground surface targets with explosion seismic effect

2004 ◽  
Vol 24 (7) ◽  
pp. 519-525 ◽  
Author(s):  
Qi Zhang ◽  
Da-chao Lin ◽  
Chun-hua Bai ◽  
Yan-yi Guo
Keyword(s):  
Ground Surface ◽  
Seismic Effect ◽  
Blast Damage

Recent Efforts on Blast Damage Mitigation for Dams

2011 ◽  
Vol 82 ◽  
pp. 428-433 ◽  
Author(s):  
Michael K. Sharp ◽  
Yazmin Seda-Sanabria ◽  
Enrique E. Matheu
Keyword(s):  
Homeland Security ◽  
Collaborative Research ◽  
Army Corps ◽  
Army Corps Of Engineers ◽  
Department Of Homeland Security ◽  
Protective Measures ◽  
Damage Prediction ◽  
Blast Damage ◽  
Development Center ◽  
The U.S

This paper describes collaborative research efforts conducted between the U.S. Army Corps of Engineers (USACE) and the U.S. Department of Homeland Security (DHS). The USACE, through its U.S. Army Engineer Research and Development Center (ERDC), has focused efforts on the development of a collaborative research program to address technical gaps related to risk and blast mitigation for dams. These research efforts involve experimental and analytical tasks designed to improve blast damage prediction capabilities for dams, navigation locks, and levee systems resulting from vehicle and waterborne delivery scenarios. The outcomes from these efforts can inform USACE’s priorities, which include refining the current understanding of the effects of potential attacks, the vulnerabilities and weaknesses of its critical assets to various threat conditions, and the local and regional consequences of those attacks in order to develop appropriate protective measures and recovery technologies.

scholarly journals KRITERIA KERUSAKAN AKIBAT PELEDAKAN PADA PEMBUATAN TEROWONGAN CIURUG, TAMBANG EMAS PONGKOR, KABUPATEN BOGOR, PROVINSI JAWA BARAT

2017 ◽  
Vol 12 (2) ◽  
pp. 103-122
Author(s):  
Awang Suwandhi ◽  
Mega Fatimah Rosana ◽  
Adjat Sudradjat ◽  
Ridho Kresna Wattimena
Keyword(s):  
Rock Mass ◽  
Damage Index ◽  
Rock Mass Rating ◽  
Blast Damage ◽  
Vector Sum

Untuk mencapai urat (vein) bijih di lokasi Central pada Level 500 mdpl, Ciurug, dibuat terowongan baru yang dinamakan RU4C-L500 dengan menerapkan teknik peledakan. Terowongan tersebut dirancang berukuran lebar 4 m, tinggi 4 m dan panjang 100 m sampai ke cross-cut menuju urat bijih. Penelitian dilakukan dengan tujuan untuk mendapatkan kriteria kerusakan terowongan yang diakibatkan oleh induksi getaran peledakan yang berpotensi menghasilkan overbreak, sehingga ukuran terowongan menjadi lebih lebar dari rencana semula. Pendekatan Blast Damage Index (BDI) digunakan sebagai metode untuk memperoleh tingkat kerusakan terowongan tersebut. Terowongan menerobos batuan andesit vulkanik yang berdasarkan hasil pengujian memiliki kecepatan rambat gelombang seismik 4157 m/det, densitas 2,37 g/cc dan kuat tarik 8,10 MPa. Batuan tersebut tergolong batuan berkekuatan sedang hingga keras dengan nilai Rock Mass Rating (RMR) antara 58,3 sampai 69,5. Data getaran peledakan diukur dengan menggunakan geofon pada jarak yang aman dari titik ledakan dan menghasilkan Peak Vector Sum (PVS) berkisar antara 2 mm/s sampai 120 mm/s. Hasil pengolahan data getaran menunjukkan, bahwa nilai BDI sebesar 2 yang mengidentifikasi adanya ambrukan terowongan karena induksi getaran peledakan terjadi pada jarak kurang dari 3 m dari titik ledakan. Besar getaran peledakan yang mengambrukan batuan andesit vulkanik tersebut mencapai PVS 1170 mm/s. Pada jarak antara 3,0 m sampai 10 m tidak terjadi kerusakan terowongan yang parah dan dapat direhabilitasi. Kondisi tersebut diidentifikasi oleh nilai BDI 0,5 sampai 1. Kemudian pada jarak di atas 10 m induksi getaran peledakan tidak lagi berpengaruh terhadap kerusakan atau kestabilan dinding terowongan. 

scholarly journals Comparison of Predicted and Experimental Behaviour of RC Slabs Subjected to Blast using SDOF Analysis

2018 ◽  
Vol 68 (2) ◽  
pp. 138 ◽  
Author(s):  
F. B. Mendonca ◽  
G. Urgessa ◽  
K. Iha ◽  
R. J. Rocha ◽  
J.A.F.F. Rocco
Keyword(s):  
Reinforced Concrete ◽  
Concrete Slab ◽  
Experimental Program ◽  
Reinforced Concrete Slab ◽  
Peak Displacement ◽  
Blast Damage ◽  
Reinforced Concrete Slabs ◽  
Military Facilities ◽  
Rc Slabs ◽  
Sdof Analysis

<p>Explosions emanating from terrorist attacks or military weapons cause damage to civilian and military facilities. Understanding the mechanical behaviour of reinforced concrete structures subjected to blast is of paramount importance for minimizing the possible blast damage. A full-scale experimental program consisting of six reinforced concrete slabs with compressive strengths of 60 MPa, 50 MPa and 40 MPa, measuring 1.0 m × 1.0 m × 0.08 m, and subjected to 2.7 kg of non-confined plastic bonded explosive, was conducted in blast test area of Science and Technology Aerospace Department (Brazilian Air Force). This paper compares experimentally measured peak displacement values with theoretical values. Theoretical analysis was carried out using single degree of freedom (SDOF) models. The comparison showed that SDOF analysis worked very well in predicting the reinforced concrete slab peak displacement against blast effects. Qualitative analysis after the experiments showed that the blast wave shape generated by the cylindrical explosive was not uniformly distributed on the slabs for the standoff distance of 0.927 m∕kg1/3.<br /><br /></p>

Some Fundamentals of Explosions Related to the Power Industry

2006 ◽  
Author(s):  
David G. Lilley
Keyword(s):  
Real World ◽  
Fire Service ◽  
Power Industry ◽  
Fire Dynamics ◽  
Technical Aspects ◽  
Blast Damage ◽  
Vapor Cloud ◽  
Pertinent Information ◽  
In Fire

Fundamentals of pertinent information on fire dynamics of explosions are reviewed, with emphasis on technical aspects related to the power industry. Topics include: fundamentals, characterization, vapor cloud explosions, blast damage due to over-pressurization, procedure for estimating the overpressure, blast fragment missile damage, and energy of mechanical explosions. The text is imbued with examples to assist in understanding and applying the ideas in real-world situations. This material is designed especially for persons in fire-related occupations: fire service, insurance adjusters, fire investigators, forensic engineers and attorneys desiring further knowledge about technical aspects of explosions.

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