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جستجو

Investigating and comparing the behavior of reinforced concrete slabs slabs with the arrangement and different thicknesses of CFRP sheets with and without opening under impact load

Amin Jafarniya¹

Abstract :
Designing and creating openings in reinforced concrete slabs will have a great impact on their characteristics. The presence of openings in concrete slabs will reduce the capacity, strength and ductility of the structure. According to the previous researches, limited researches have been done in the field of reinforcement of reinforced concrete slabs with openings under impact loading. In this research, the behavior of reinforced concrete slabs with openings under impact load is investigated and different thicknesses of CFRP reinforcement sheets in slabs without openings are evaluated. In this article, 14 slabs with and without opening were subjected to impact loading. For impact loading, a rigid object weighing 84 kg was dropped from a height of 1.5 m. By calculating the velocity of the object at the moment of impact, the initial velocity of 5.5 m/s without height was applied to the rigid object in the modeling. After validation, the investigated models were simulated in Abaqus software. The results showed that the arrangement of reinforcing sheets in the slab has a direct relationship with the bearing capacity of the slab. Also, the use of crosswise reinforced sheets with greater thickness makes the stress applied to the slabs to be evenly distributed And it prevents the concentration of tension. The presence of an opening in the slab causes an increase of about 1.5 times the displacement of the center of the slab. The presence of an opening in the slab reduces the impact load capacity of the slab by about 1.3 times. In reinforced opening slabs, this difference is less than in the case without CFRP sheets.

Keywords : opening reinforced concrete concrete slab abaqus cfrp displacement

زبان مقاله : انگلیسی
محور مقاله : مهندسی سازه ، زلزله و بهسازي لرزه اي
محل انتشار : دومین کنگره بین المللی مهندسی عمران ، معماری ، مصالح ساختمانی و محیط زیست
آدرس وب سایت کنفرانس : caucong.com/2nd
کد IOI مقاله : XEFB-HDBBE
لینک مستقیم مقاله : https://isnac.ir/XEFB-HDBBE
نمایش چکیده فارسی : https://isnac.ir/SA/XEFB-HDBBE

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جستجو

Investigating and comparing the behavior of reinforced concrete slabs slabs with the arrangement and different thicknesses of CFRP sheets with and without opening under impact load

Amin Jafarniya¹

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سایر مقالات محل انتشار

جستجو

Investigating and comparing the behavior of reinforced concrete slabs slabs with the arrangement and different thicknesses of CFRP sheets with and without opening under impact load

Amin Jafarniya1

سایر مقالات ارائه دهنده

سایر مقالات محل انتشار

Amin Jafarniya¹