Numerical simulation of damage and dynamic response of masonry infilled wall under near zone explosion
HU Jiahui1, WU Hao1, FANG Qin2
1.College of Civil Engineering, Tongji University, Shanghai 200092, China;
2.State Key Laboratory for Explosion & Impact and Disaster Prevention & Mitigation, Army Engineering University of PLA, Nanjing 210007, China
Abstract：Under action of explosion load, masonry infilled wall widely used in civil structures can generate fragments to seriously threaten safety of people and equipment inside buildings, especially, under near zone explosion, wall body can cause more serious local damage, and debris can fly faster, but the existing research work is still less.Here, based on near-field explosion tests of ordinary clay fired brick infilled wall, the numerical simulation of damage and dynamic response of masonry infilled wall under near-field explosion was performed.The applicability of the Load Blast method, the arbitrary Lagrange-Eulerian (ALE) method and the impulse method to simulate near-field explosion load and predict wall damage and dynamic response were verified contrastively.The impulse method was used to further discuss effects of explosion distance, bond strength of mortar interface and building block material model under the same proportional distance.The results showed that in near zone explosion, under the same proportional distance, wall body damage usually increases with increase in explosion distance, and develops from local failure to the overall collapse failure mode; the anti-blast performance of wall body is strengthened with increase in bond strength of block mortar, and it is mainly controlled by shear failure stress; the prediction effect of MAT_BRITTLE_DAMAGE model or MAT_WINFRITH_CONCRETE model is better than that of MAT_SOIL_AND_FOAM model.
胡嘉辉1，吴昊1，方秦2. 近区爆炸作用下砌体填充墙损伤破坏与动态响应的数值模拟[J]. 振动与冲击, 2021, 40(9): 1-11.
HU Jiahui1, WU Hao1, FANG Qin2. Numerical simulation of damage and dynamic response of masonry infilled wall under near zone explosion. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(9): 1-11.
［1］ETTOUNEY M, DIMAGGIO P, HAPIJ A.Analysis of masonry bearing walls to blast threats ［C］∥Proceeding, Structures Congress.Seattle, WA: ASCE, 2003.
［2］JOHNSON C F. Concrete masonry wall retrofit systems for blast protection ［D］.College Station, TX: Texas A & M University, 2013.
［3］ORTON S L, CHIARITO V P, MINOR J K, et al.Experimental testing of CFRP-Strengthened reinforced concrete slab elements loaded by close-in blast ［J］.Journal of Structural Engineering, 2014, 140(2): 1612-1625
［4］HENRYCH J, MAJOR R.The dynamics of explosion and its use ［M］.Amsterdam: Elsevier, 1979.
［5］VARMA R K, TOMAR C P S, PARKASH S, et al.Damage to brick masonry panel walls under high explosive detonations.Pressure vessels and piping division ［C］∥Pressure Vessels and Piping Conference.Orlando, FL, 1997.
［6］WEI X Y, STEWART M G.Model validation and parametric study on the blast response of unreinforced brick masonry walls ［J］.International Journal of Impact Engineering, 2010, 37(11): 1150-1159.
［7］范俊余, 方秦, 陈力, 等.砌体填充墙的抗爆性能［J］.爆炸与冲击， 2014, 34(1): 59-66.
FAN Junyu, FAN Qin, CHEN Li, et al.Anti-blast properties of masonry infill walls ［J］.Explosion and Shock, 2014, 34(1): 59-66.
［8］MICHALOUDIS G, GEBBEKEN N.Modeling masonry walls under far-field and contact detonations ［J］.International Journal of Impact Engineering, 2019, 123: 84-97.
［9］SHI Y C, XIONG W, LI Z X, et al.Experimental studies on the local damage and fragments of unreinforced masonry walls under close-in explosions ［J］.International Journal of Impact Engineering, 2016, 90: 122-131.
［10］DAVIDSON J S, PORTER J R, DINAN R J, et al.Explosive testing of polymer retrofit masonry walls ［J］.Journal of Performance of Constructed Facilities, 2004, 18(2): 100-106.
［11］DAVIDSON J S, FISHER J W, HAMMONS M I, et al.Failure mechanisms of polymer-reinforced concrete masonry walls subjected to blast ［J］.Structure Engineering, 2005, 131(8): 1194-1205.
［12］DAVIDSON J S, MORADI L, DINAN R J.Selection of a material model for simulating concrete masonry walls subjected to blast ［D］.Birmingham, AL: University of Alabama, 2004.
［13］DAVIDSON J S, SUDAME S, DINAN R J.Development of computational models and input sensitivity study of polymer reinforced concrete masonry walls subjected to blast ［D］.Birmingham, AL: University of Alabama, 2004.
［14］MORADI L. Resistance of membrane retrofit concrete masonry walls to lateral pressure ［D］.Birmingham, AL: University of Alabama, 2007.
［15］王军国.喷涂聚脲加固黏土砖砌体抗动载性能试验研究及数值分析［D］.合肥：中国科学技术大学, 2017.
［16］WANG J G, REN H Q, WU X Y, et al.Blast response of polymer-retrofitted masonry unit walls ［J］.Composites Part B: Engineering, 2017, 128: 174-181.
［17］LS-DYNA keyword user’s manual ［M］.Livermore, CA: Livermore Software Technology Corporation, 2014.
［18］施楚贤.砌体结构［M］.4版.北京： 中国建筑工业出版社, 2004.
［19］RIDDINGTON J R, GHAZALI M Z.Hypothesis for shear failure in masonry joints ［J］.Proceedings of the Institution of Civil Engineers, 1990, 89(1): 89-102.
［20］ATKINSON R H, AMADEI B P, SAEB S, et al.Response of masonry bed joints in direct shear ［J］.Journal of Structural Engineering, 1989, 115(9): 2276-2296.
［21］RANDERS P, BANNISTER K A.Airblast loading model for DYNA2D and DYNA3D： ARL-TR-1310［R］. ［S.l.］: Army Research Laboratory, 1997.
