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一前言为了计算超静定结构在荷载过程中的内力重分布,以及在进行结构弹塑性动力分析时,需要M-φ的全过程曲线,或需要知道各工作阶段的近似刚度。虽然利用材料的ó-ε关系式(本构方程)按一定的计算模式通过电算也可进行上述分析,但按给定的M-φ曲线或各阶段的近似刚度自较直接,因而计算工作量可大大减轻。根据我们进行的量测,提出如下建议,并对所量测的钢筋混凝土受弯构件和大偏心受压构件的挠度曲线予以计算比较,比较结果表明,建议的计算方法基本符合量测结果。
Foreword In order to calculate the internal force redistribution of the statically indeterminate structure during the loading process, and during the elastoplastic dynamic analysis of the structure, the whole process curve of M-φ is needed, or the approximate stiffness of each working stage needs to be known. Although the above analysis can be carried out by using the ó-ε relation (constitutive equation) of the material by a certain calculation mode through electric calculation, the approximation stiffness of a given M-φ curve or each stage is relatively straightforward, and thus the calculation work is performed. The amount can be greatly reduced. Based on the measurements we made, the following recommendations are made and the measured deflection curves of the reinforced concrete flexural members and the large eccentric compression members are calculated and compared. The comparison results show that the proposed calculation method basically meets the measurement results.