Space frame substructure hybrid simulation test system

The utility model discloses a space frame substructure hybrid simulation test system, which adopts double actuators for horizontal loading to realize translation of a test substructure, one actuator is positioned at a high position of the test substructure, and the other actuator is positioned at a high position of a frame of a loading section. The rigidity of the loading section frame is approximate to that of the test substructure frame in an infinity mode, it is guaranteed that displacement of the two actuators is synchronous and consistent in the loading process, and the boundary constraint of the numerical substructure on the test substructure can be effectively considered. The vertical load loading device can effectively consider the influence of the gravity second-order effect on the test substructure. 本实用新型公开了一种空间框架子结构混合仿真试验系统，本实用新型采用双作动器水平加载来实现试验子结构的平动，一台作动器位于试验子结构层高位置，另一台位于加载段框架层高处，加载段框架的刚度相对与试验子结构框架近似为无穷大，在加载过程中保证两台作动器位移同步且一致，可以有效考虑数值子结构对试验子结构的边界约束。竖向荷载加载装置可以有效考虑重力二阶效应对试验子结构的影响。