CAJ | 학술논문

采用拟夹层板分析法的相关假设和理论，利用等效刚度板对网架结构进行等效代换，研究等效刚度板模拟空间网架对下部支承结构的影响。通过建立网架结构模型和等效刚度板模型，运用SAP2000有限元分析软件分别对两种模型的自振频率，静载作用下的柱轴力以及水平地震作用下的弯矩、位移进行对比分析。分析结果表明，结构的周期、内力计算结果比较相近，部分构件位移有较大误差。可以得出，网架结构平面内刚度无限大的假定对计算结果产生较大误差，以等效刚度板代替网架结构的协同工作可以简化下部支承结构设计与计算分析，在工程误差范围内有一定的可行性。
채용의협층판분석법적상관가설화이론，이용등효강도판대망가결구진행등효대환，연구등효강도판모의공간망가대하부지승결구적영향。통과건립망가결구모형화등효강도판모형，운용SAP2000유한원분석연건분별대량충모형적자진빈솔，정재작용하적주축력이급수평지진작용하적만구、위이진행대비분석。분석결과표명，결구적주기、내력계산결과비교상근，부분구건위이유교대오차。가이득출，망가결구평면내강도무한대적가정대계산결과산생교대오차，이등효강도판대체망가결구적협동공작가이간화하부지승결구설계여계산분석，재공정오차범위내유일정적가행성。
In the present paper, according to the related hypothesis and theory of equivalent sandwich plate method, the truss is equivalently exchanged by equivalent stiffness slab, and the effect of the truss on the lower part of supporting structure is analyzed by using the equivalent stiffness slab method. According to two analysis models, the natural frequences of two models, the column axial force under static loads, and the moment and displacement under horizontal earthquake action are contrasted and analyzed by using SAP2000. The results show that under certain circumstances, this equivalent stiffness slab is suitable for simulation, and some advisory opinions are given to the design of grid structures at last.