CAJ | 학술논문

以某抗震设防框架为研究对象，采用S A P2000有限元软件，依次拆除底层纵向边柱、横向边柱、角柱和内柱，研究抗震框架的倒塌破坏行为。以做功平衡原理建立了柱失效处梁配筋调整计算公式，并进行了配筋调整设计。结果表明：7度和8度抗震设防的框架结构仍会发生连续性倒塌，但是抗倒塌能力随着设防等级的提高而提高，抗震设计不能够完全替代抗倒塌设计；柱失效导致结构发生连续坍塌破坏的危险性由小到大依次为内柱、横向边柱、纵向边柱、角柱；梁铰机制在结构抗倒塌中的作用尤其重要，倒塌破坏时以梁的弯曲破坏为主，剪切破坏较少出现；线弹性静力分析计算的供需比最大值一般出现在失效柱上一层的相邻梁上，而非线性静力分析的最大破坏出现在与失效柱相连的梁上，但是二者对结构可能的失效位置判断基本一致。
이모항진설방광가위연구대상，채용S A P2000유한원연건，의차탁제저층종향변주、횡향변주、각주화내주，연구항진광가적도탑파배행위。이주공평형원리건립료주실효처량배근조정계산공식，병진행료배근조정설계。결과표명：7도화8도항진설방적광가결구잉회발생련속성도탑，단시항도탑능력수착설방등급적제고이제고，항진설계불능구완전체대항도탑설계；주실효도치결구발생련속담탑파배적위험성유소도대의차위내주、횡향변주、종향변주、각주；량교궤제재결구항도탑중적작용우기중요，도탑파배시이량적만곡파배위주，전절파배교소출현；선탄성정력분석계산적공수비최대치일반출현재실효주상일층적상린량상，이비선성정력분석적최대파배출현재여실효주상련적량상，단시이자대결구가능적실효위치판단기본일치。
Using the finite element software SAP2000 , progressive collapse behavior of the earthquake‐resistant reinforced concrete (RC ) frame was investigated when its longitudinal peripheral‐column , transverse peripheral‐column , corner‐column , and interior‐column were removed in turn .Based on energy balance principle ,the formula of the adjustment of the steel bars of the beams connected with the failure column was proposed ,and the adjustment design was done .The results show that RC frame structures in zones with seismic intensity Ⅶ or Ⅷcould develop progressive collapse ,but their collapse resistance will improve with the increasing of their seismic performance levels ,and seismic design can not eventually replace anti‐collapse design .The dangers of the structure progressive collapse caused by column failure from small to big is interior‐column removing ,transverse peripheral‐column removing ,longitudinal peripheral‐column removing ,corner‐column removing .The beam‐hinge mechanism is especially important in the collapse of the structures .The main failure is the bending failure of beams ,not the shear failure of beams , w hen the collapse happens . T he maximum value of the ratio of supply and demand calculated with the linear elastic static mechanical analysis method appears in the beams which connect the column that is above the failure column .Moreover ,the greatest damage of the structure analyzed with nonlinear static mechanical analysis method appears in the beams which connect with the failure column .But the two results of the judgment of the structure's failure position are basically identical .