In the construction industries, in order to compensate material disadvantages of existing construction material (concrete, steel, wood, etc.) and satisfy requirements of the structural performance, research on durable and outstanding corrosion resistant fiber reinforced polymeric plastic (FRP) is actively underway. In general, a pile cannot be produced with unlimited lengths because of the size of the manufacturing machine and transportation to construction site. Therefore, the connection of pile and structural integrity of connection should be considered in the pile design. In this paper, hybrid FRP-concrete composite pile (HCFFT) was investigated by focusing on the connection of HCFFT members. The connection capacity of HCFFT was evaluated by the experiment and the finite element analysis. From the results appropriate connection method of HCFFT is discussed.
The cooling water intake pipeline constructed in the nuclear power plant is mostly made of steel or concrete. However, they have some disadvantages such as reduced durability due to wear and corrosion caused by sea water, defects in connections, breakage of pipelines, and difficulties in continuous maintenance. To mitigate the presented problems, recently, the research on durable and outstanding corrosion resistant glass fiber reinforced polymer plastic (GFRP) pipe has been actively conducted. In this experimental study, 2400 mm (94.49 in) diameter of GFRP pipe specimen is investigated. The field test was planned to measure ring deflection of buried GFRP pipe. In addition, the design method proposed by American Water Works Association (AWWA) M 45 was applied to compute the ring deflection of pipe and then compared the predicted results with the experimental results.
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