Full rotary casing drilling rig platform is main stress component while working. According to working characteristics of middle platform of full rotary casing drilling rig, two kinds of working situations—lifting and lining, and underdraught, are analyzed on statics by using ANSYS software, which provides theoretical analysis for improving structural stress and structural optimization design.% 全回转全套管钻机中平台是该钻机工作时的主要受力构件，针对全回转全套管钻机中平台的工作特点，采用ANSYS软件对起拔和下压两种工况进行静力学分析，为改善全回转套管钻机结构受力和结构优化设计提供理论依据。
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