Study on Response of Reinforced Concrete Beam under Accidental Impact by Piece Part Model

Abstract:

At present, there exist many simple and reliable methods to describe the damage degree of reinforced concrete structure induced by low velocity impact. However, the actual fracture process can not be well reflected by the current methods. Therefore, a piece part model, which can well describe the damage process, was put forward. The cracks generated in the concrete beam can be reflected by the interfaces between the elements. In this method, the beam is descretized as the linking system of the steel bar and concrete. The dynamic calculating equation of the beam is deduced on the basis of the internal force and inertia force of the rigid unit and linking piece. The local deformation in the contact region of the beam and the stress-strain state of the beam under low velocity impact can also be calculated by this method. Finally, the advantages of the model were proved by a practice example.

• Periodical: Applied Mechanics and Materials (Volumes 99-100)
• Pages: 293-299
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.99-100.293
• Online since: September 2011
• Authors: De Rong Wang, Shu Fang Feng, Hao Lu
• Keywords: Deformation, Low Velocity Impact (LVI), Reinforced Concrete (RC) Beam

References

[1] WANG Ming-yang, WANG De-rong, SONG Chun-ming. A Calculation Method of Reinforced Concrete Beam Under Low Velocity Impact [J]. Acta Armamentrall, 2006, 27(3): 399-405.

[2] Ahmed T U, Ramachandra L S, Bhattacharyya S K. Elasto-plastic response of free-free beams subjected to impact loads [J]. International Journal of Impact Engineering, 2001, 25: 661-681.

DOI: 10.1016/s0734-743x(01)00002-1

[3] LIU Xu hong, DONG Jun. Dynamic behavior of a rigid, perfectly plastic free-free beam impacted by a mss at both ends[J]. Explosion and Shock Waves, 2003, 23(4): 318-323

[4] YANG J L,YU Y X, Reid S R, Dynamic Behavior of a Rigid, Perfectly Plastic Free-free Beam Subjected to Impulsive Loading at any Cross-section along Its Span[J]. Int J Impact Engng, 1998,12(3):165-175.

DOI: 10.1016/s0734-743x(97)00048-1

[5] Yang Jialing Liu Xuhong. Dynamic Response Of A Rigid,Perfectiy Plastic Free-Free Beam Struck By a Projectile Atany Cross-Section Along Its Span[J]. Chinese Journal of Solid Mehcanics, 2004, 17(2): 140-149.

[6] Southeast University, tianjin university, The design theory for concrete structure[M]. Beijing: China architecture & building press,2001.

[7] FU Yiming, XIONG Huier. Material dynamics[M]. Hunan university press,2007.

[8] ZHOU Ze-ping, WANG Ming-yang, FEG Shu-fang etc, Deformation and Failure of a Reinforced Beam Under Low Velocity Impact[J], Journal of Vibration and Shock, 2007,26(5);99-103.