プレストレストコンクリート梁部材の高温時曲げ耐力評価

概要

論文の詳細を見る
Fire resistance of prestressed concrete beams in terms of flexural capacity was investigated. High strength steel such as prestressing steel has a different strength reduction curve under high temperature from ordinary strength steel. The authors conducted tensile tests on prestressing steel bars under high temperature up to 600 degree Celsius. It was revealed from the test results and past research that BS8110 with some modification in the lower temperature range gave a good estimation for strength degradation of prestressing steel bars at elevated temperature. Temperature contours in the beam cross section of a prestressed concrete member was derived based on a simplified equation. The contours agreed well with the one obtained experimentally in past research. Design recommendations for prestressed concrete beams at elevated temperature are included in this paper.
社団法人日本建築学会の論文
2006-08-30