大跨预应力混凝土空间框架结构的地震振动台试验研究

利用地震振动台对大跨预应力混凝土井式梁空间框架结构的抗震性能进行了实验研究。两个模型的实验结果表明：(1)大跨预应力井式梁空间框架结构可以提供大的楼层平面内刚度；(2)对称大跨预应力井式梁空间框架结构，可以不考虑耦合地震反应；(3)大跨预应力井式梁空间框架结构的竖向地震反应中心大而周边小；(4)在相同加速度但不同的地震波作用下，结构的竖向地震反应不同。

Experimental seismic study of large-span prestressed concrete space frame structures

The shaking table test was conducted to gain an insight into the earthquake resistant performance of a large-span prestressed concrete grillage girder space frame structure. The results of the two models indicate that (1)the large-span prestressed concrete grillage girder space frame structure can render large storey stiffness; (2)the coupled seismic responses of the symmetric large-span prestressed concrete grillage girder space frame structure may be neglected;(3)the vertical seismic response at the center is larger than that at the edge;(4)under the same acceleration peak value but different wave forms, the vertical seismic responses are different.