快速荷載下無粘結預應力混凝土梁的延性
李志方 王志浩 李 蓬
- 摘 要
-
李志方 王志浩 李 蓬
（清華大學土木工程系 北京 100084）[提要] 介紹了無粘結預應力t昆凝土梁靜、快速加載的試驗結果和試件的位移延性。通過簡化分析，并根據(jù)有關的靜、快速荷載下的鋼筋混凝土、預應力混凝土梁的試驗數(shù)據(jù)，提出了適用于鋼筋混凝土及預應力混凝土梁在靜速及快速荷載下的延性比計算公式。
[關鍵詞] 無粘結預應力混凝土 延性 快速荷載Based on the comparative tests of nine unbonded prestressed concrete(UBPC) beams under rapid and static loads, the ductility of UBPC was discussed. The formulas which can be used to calculate the ductility ratio of the reinforced concrete and the UBPC under static and rapid loads were drawn.
Keywords: unbonded prestressed concrete(UBPC); ductility; rapid loads
