ABSTRACT
Recently, some port and harbour structures in Japan have been found to be heavily damaged by salt attack. Especially, the RC (Reinforced Concrete) type slab and beam members of super-structures of wharves are damaged. This deterioration problem has become not only engineering problem but also one of the most serious social problems in Japan. As one of the solutions for this problem, the use of corrosion-free new materials in the place of steel bars have been discussed and some experimental works have been carried out. Among corrosion-free new materials, CFRP (Carbon Fiber Reinforced Plastic) is considered to be the most excellent as construction materials, because CFRP rod has higher strength and lower relaxation compared to the ordinary prestressing steel tendons. Recently, new type wharve structures shown in Fig.1 are discussed. This structure will be fabricated with PC beams which are prestressed with CFRP rods. CFRP rods are used not only as prestressing tendons of precast type pretensioning beams, but also as the lateral unbonded prestressing cables. One advantageous feature of this structure is as follows; when some of the beams are damaged it can be replaced by new one. Therefore it will contribute to the economical maintenance. In order to realize this new type wharve structures, the experimental work described herein is carried out. The main part of this work is the bending tests of beam specimens prestressed with CFRP rods. In this paper, the test procedure and results are described, and the comparison of the test results and linear analysis results are discussed. An image of new type wharf structure https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429175626/5ac93ad9-aa44-4109-af9a-37e550cbb434/content/fig80_1.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/>
