Pipe Impact on Concrete Slabs

by F. Carli, Framatome, Paris-La-Defense, France,
P. Chouard, Framatome, Paris-La-Defense, France,
J. Garcia, Framatome, Paris-La-Defense, France,

Document Type: Proceeding Paper

Part of: Structural Engineering in Nuclear Facilities


A series of pipe impact on concrete slab tests have been performed at the CEA's Cadarache Laboratory using the AQUITAINE II facility. The testing program was jointly sponsored by EPRI, CEA and FRAMATOME. The main objective of these tests is to quantify pipe impact load, concrete response, and pipe-concrete interaction under a pressurized water reactor (PWR) system condition. A total of five tests were performed. The pipe is three inch schedule 80 and the impact distance between the whipping pipe and the slab is five feet. The concrete slab characteristics are the parameters of study which include thickness, compressive strength, and reinforcement ratio. Concrete responses ranging from no damage to severe penetration were observed. There was strong interaction between pipe impact (crushing) and concrete reaction. Two different analytical methods qualified for impact on a very stiff structure were used to correlate experiment and analysis. For more quantified determination of impact loads, it is found that an explicit modeling of concrete slab may be necessary.

Subject Headings: Concrete pipes | Pipelines | Concrete slabs | Reinforced concrete | Compressive strength | Load and resistance factor design | Pressure pipes | Load tests

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