錐形柱考慮損傷累積效應(yīng)的強震下豎向承載力分析
伍敏1，任慶英1，劉文珽1
- 摘 要
-
（中國建筑設(shè)計研究院，北京 100044）[摘要]為精確描述混凝土和鋼材在地震作用下強度和剛度的退化規(guī)律，在混凝土Faria-Oliver模型和鋼材K&K模型的基礎(chǔ)上，分別引入損傷模型進行修正。運用考慮損傷累積效應(yīng)的修正Faria-Oliver模型和修正K&K模型，對天津大學(xué)新校區(qū)綜合體育館中一典型錐形柱進行豎向承載力分析，結(jié)果表明考慮材料損傷累積效應(yīng)，錐形柱的豎向極限承載力和強震作用后的豎向剩余承載力顯著降低。[關(guān)鍵詞]錐形柱;損傷模型;損傷累積效應(yīng);豎向極限承載力;豎向剩余承載力中圖分類號：TU352 文獻標志碼：A 文章編號:1002-848X(2013)S1-0606-04Seismic vertical capacity analysis of the cone shaped column considering damage accumulationWu Min, Ren Qingying, Liu Wenting(Abstract: To describe accurately the degradation of concrete and steel strength and stiffness due to the severe earthquakes, the damage model was defined in the constitutive model for concrete material and steel material separately. Analysis on the vertical capacity of the cone shaped column which belongs to the multi-purpose sports stadium of Tianjin University in the new campus under severe earthquake using the modified Faria-Oliver model and modified K&K model was conducted, and the results showed that consideration of damage accumulation indicated decrease the member vertical ultimate and rest capacity after the earthquake dramatically.Keywords: cone shaped column; damage model; damage accumulation effect; vertical ultimate capacity; vertical rest capacity
