中文摘要：

为了解决施工缝在钢筋混凝土结构数值计算中的模拟问题,根据已有研究成果,结合施工缝的形成及受力特点,选用合适的模型进行模拟。该模型运用纤维模型的相关研究成果,并综合考虑了施工缝周围区域的平均剪切效应,同时考虑法向拉压性能和切向剪切性能。借助Open Sees软件平台,提出施工缝模型的建模流程,并对4根带缝柱以及两榀RC平面框架的拟静力试验进行了数值模拟。最大荷载和力-位移滞回曲线的试验与计算结果表明,该模型可以模拟沿施工缝面的剪切滑动和施工缝面开裂以后钢筋产生较大的滑移所造成的捏缩现象,应用该模型计算的结果与试验结果吻合较好,验证了施工缝模型的合理性和有效性。

英文摘要：

In order to solve the problem of construction joint simulation in numerical calculation of reinforced concrete structure,according to the existing research,a suitable model was chose based on the formation and stress features of construction joint. Related research of fiber model,the average of shear effect in peripheral region of construction joint,as well as normal and tangential mechanical properties were comprehensively considered in the model. By using the Open Sees software,numerical calculation of pseudo static tests on four columns with construction joint and two plane frames was performed and the modeling flow was proposed. The test results of maximum load and the law of force-displacement hysteretic curves and the calculated results showed： the construction joint model could simulate the shrinkage phenomenon due to shear slide along construction joint face and the far steel bar-slip. The test results are in close agreement with the calculated results,thus confirming the rationality and validity of the construction joint model.