プレストレストコンクリート部材定着部に関する研究 : 第 2 報・3 次元載荷状態の定着部応力

概要

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This is second part of researches on the anchorage zone problems of prestressed concrete members. In this report, some results of numerical calculation on the stress distribution in the anchorage zone subjected to three dimensional by concentrated load are described. Test results on concrete blocks subjected to two and three dimensional loading are also described. From these two reports, following conclusions are obtained. 1) If the damping coefficient of 30 to 80 percent of critical damping of one dimensional case is used for analysing the stress distribution in the anchorage zone subjected to two or three dimensional by concentrated load using Dynamic relaxation method, the exact solution will be obtained after 200 times of iteration. 2) The Bleich's solution which is in common use in Japan for design of reinforcement for bursting stress in the anchorsge zone differ very much from the true stress distribution. 3) In the case of three dimensional loading condition, the stress distribution around the central axis of end blocks differ very much from that on the surface, especially in the case of high concentrated load. However, the average bursting stress through the depth dose not differ much from that in the case of two dimensional loading. 4) Test results show good agreement with numerical calculation results.
一般社団法人日本建築学会の論文
1974-09-30