中文摘要：

采用有限元数值模拟与理论分析相结合的方法,研制了一种适用于教学与科研的拉压双作用梁式反力架。反力架主要由纵梁、立柱、横梁、高强拉杆和其他辅助件组成,最大试验净空为5.9 m×5.2 m（长×高）,可满足拉1 MN和压2 MN的竖向往复荷载使用要求。应用实践表明,该反力架不仅能够满足强度、刚度和稳定性等力学指标,而且还具有安装调节方便、适用范围广等优点,在科研及实验教学中具有一定的示范应用推广价值。

英文摘要：

As the most common load bearing device in experimental research on civil engineering, most of reaction frames have the disadvantage of single function, inconvenience of use and hidden danger etc. In order to meet the function and security of reaction frame which is necessary to adapt to the development of modern experimental techniques, based on the investigation and summary of the experiences from some colleges and universities, a draw-press double-acting reaction frame which is applicable to experimental teaching and research is developed by adopting the analysis method of finite element numerical simulation combined with theory. The reaction frame is mainly composed of main beam, reaction column, secondary beam, pulled pole and other auxiliary components. The maximum test net space of it is 5.9 mm ×5.2 m （length × high） and the vertical load capacity of it is 1 MN （tension） and 2 MN （pressure）. The practical application shows that the reaction frame not only meet the strength, stiffness, stability and other mechanical properties, but also has convenient installation and adjustment, wide application range and other advantages. Conspicuous application value is presented in scientific research and experimental teaching.