井架是矿山生产的主要提升构筑物，属于特种结构。它在整个生产过程中起着重要作用，一旦发生破坏将导致整个生产系统瘫痪。目前对于钢井架的研究主要集中在理论设计方面，对井架结构的地震反应分析较少。本文对双斜撑式钢井架结构的地震反应进行研究并提出工程设计建议。研究工作主要有以下四部分： （1）综述了地震反应分析理论的发展，钢井架结构地震反应特性的研究现状、存在问题及发展趋势。根据结构的分析理论和实用有限元软件，结合工程实例建立整体空间有限元计算模型。 （2）通过钢井架结构的模态分析得出低阶振型对震动起主导作用，而高阶振型对震动影响较小。选取前8阶振型所得周期和质量参与系数分析结构的振型特征。 （3）采用SAP2000有限元软件对钢井架结构分别用反应谱分析法和时程分析法对结构进行弹性地震反应分析，两种方法计算结果基本吻合，最大位移出现在顶点处，且结构在19.000m、26.650m及34.450m高度处位移发生突变。结构X、Y向的层间位移角在19.000m和34.450m高度处发生突变，最大值出现在26.650m高度处。位移突变或层间位移角较大表明结构在相应位置抗侧刚度较小容易成为薄弱部位，结构设计中应采取抗震加强措施。 （4）应用Pushover方法对钢井架结构进行拟静力分析。通过分析得到结构塑性铰的形成与分布规律和结构薄弱部位及破坏模式。钢井架结构塑性铰出现的顺序依次为：天轮支撑梁根部→平台横梁两端→主斜撑柱弯折处、变截面处→副斜撑柱弯折处，其中天轮支撑梁根部塑性铰最先达到极限状态。 根据分析结果本文提出了钢井架结构抗震设计的合理化建议，研究所得结论具有一定的理论意义和实际工程应用价值，为钢井架结构的进一步研究奠定了基础。

The derrick is a major upgrade structure in the mine production; it is also the special structure. It plays very import role in the whole production process. If it damages, it will lead to the paralysis of the entire system. At present scholars research mainly focuses on theory design, but few on its seismic response analysis. This paper studied seismic response of the dual slant bracing of steel derrick structure, and then proposed engineering design proposals. The mainly work contained the following four parts: （1）This paper reviewed the seismic response theoretical development, seismic response characteristics of steel derrick structure, the problems and solutions on its seismic response analysis. According to the analysis theoretical and the finite element software, It established the finite element model based on the engineering example. （2）By modal analysis of steel derrick structure, this paper concluded that the low-order modes took the leading role on seismic response, while the higher modes had little influence. According to the modal periods and modal participation factors of the first 8-order modes, it obtained modal characteristics of the structure. （3）This paper analyzed elastic seismic response of steel derrick structure used response spectrum analysis method and time-history analysis method by SAP2000 finite element software, and two results were basically consistent. It derived that the maximum displacement appeared in the apex, and height at 19.000m, 26.650m and 34.450m horizontal displacement had mutations. The inter-story displacement angle in X-axis, Y-axis direction of structure had mutations at the height 19.000m and 34.450m, the maximum value appeared at height 26.650m. Displacement mutation or inter-story displacement angle larger indicated that the lateral stiffness smaller at the corresponding part of structure and easily became weak parts, therefore strengthening measures should be adopted in seismic design. （4）This paper used the Pushover method for equivalent static analysis of the steel derrick structure, and it obtained formation and distribution of structural plastic hinge, weakest parts of the structure and the failure modes. The sequence of plastic hinges appeared were: two ends of supporting beam, two ends of platform beam, the bending department and variable cross section site of the main bracing column, the bending department of deputy bracing column, and plastic hinge of two ends of supporting beam firstly reached limit status. According to the results of the analysis, this paper presents the proposed rationalization of seismic design of steel derrick structure. Come to the conclusion by studying the work, which has important theoretical and practical engineering applications, and laid a foundation for further study of the steel derrick structure.