CAJ | 학술논문

利用320条实测中国人步行荷载曲线，由振型分解法计算了步行荷载作用下大跨混凝土楼盖竖向振动的10 s加速度均方根反应谱曲线。基于楼盖频率与振动幅值双控原则，对计算反应谱进行了拟合简化，提出了3！20 Hz频率范围的设计用楼盖均方根加速度响应计算表达式。进一步讨论了高阶振型、边界条件、计算跨度、行走步幅和阻尼比等要素对反应谱的影响，并给出了对应的修正方法。最后通过与已建大跨楼盖步行激励下实测加速度响应的比较，验证了所建议的反应谱计算方法的合理性。
이용320조실측중국인보행하재곡선，유진형분해법계산료보행하재작용하대과혼응토루개수향진동적10 s가속도균방근반응보곡선。기우루개빈솔여진동폭치쌍공원칙，대계산반응보진행료의합간화，제출료3！20 Hz빈솔범위적설계용루개균방근가속도향응계산표체식。진일보토론료고계진형、변계조건、계산과도、행주보폭화조니비등요소대반응보적영향，병급출료대응적수정방법。최후통과여이건대과루개보행격려하실측가속도향응적비교，험증료소건의적반응보계산방법적합이성。
Here,the acceleration response spectrum of a long span floor under human walking loads was studied. Three hundreds and twenty experimental measurements of walking load curves were applied to a long span floor to obtain a 1 0-second root-mean-square acceleration response spectrum in the vertical vibration direction,based on it a simplified calculation expression was suggested for the root-mean-square acceleration response of the floor within the frequency range of 3-20Hz.The effects of several parameters including higher order vibration modes,boundary condition,floor span, stride length and damping ratio on the spectrum were studied and the corresponding modifying measures were suggested. The detailed implementation procedure of the suggested response spectrum was presented.The feasibility and applicability of the suggested spectrum were validated by comparing the prediction results with field measurements of an existing long span floor.