穹顶圆柱体结构试验分析及评估方法的探讨

对常用穹顶圆柱体结构分析其平底板、立式圆筒、扁球面穹顶的受力特点,给出结构内力简化计算公式,提出一种性能评估的通用方法:从施工阶段实测的数据推定混凝土的性能参数,并进行试验变形预估,建立试验变形评价标准;最后,通过验证性试验,结合内、外观质量检查,全面评价结构的性能,并修正材料的弹性模量和泊松比,建立计算结构性能的基本模式。通过某核电站安全壳工程实例,进行上述评估方法的具体应用与探讨,可为类似结构评估提供理论支持和经验参考。

DISCUSSION ON TEST ANALYSIS AND EVALUATION METHOD OF DOME-CYLINDER STRUCTURE

To a dome-cylinder structure,the stress characteristics of flat base,vertical cylindrical wall and spherical dome were analyzed, and the simplified calculation formulae of the characteristics were given, therefrom the performance evaluation method of the structure was put forward. The core idea of the method was as follows: firstly deducing the concrete performance parameters were deduced from the data of construction stage,and the evaluation standard of test deformation was set up according to the predicted deformation in test,and finally the structure performance was evaluated through confirmatory test and internal-external visual inspections. Further more,the elastic modulus and poisson's ratio were modified for next evaluation. The evaluation method was also applied and discussed at the test of the containment of a nuclear power station. Which could provide theoretical support and reference for similar structure assessment.