不同配筋的附加角钢预压装配框架边节点试验研究

Experimental study on prestressed assembling frame midside node with additional angle steel under different prestressing force

由于装配式框架结构的整体性和抗震性能主要是由其节点的抗震性能决定的,因此研究其节点在低周反复荷载下的抗震性能对促进装配式框架的发展具有重要意义。通过对不同配筋率下现浇钢筋混凝土框架和附加角钢板预应力装配式混凝土框架的节点,在低周反复荷载作用下的试验对比,从而为有效提高预应力装配框架结构的耗能能力提供可靠的技术参数和理论依据。结果表明:附加角钢板的预应力装配式框架结构具有良好的抗震性能,提高配筋率在一定程度上可以提高节点的抗震性能。在抗震设防地区采用该种节点,便于工厂化制作,施工方便,具有广阔的应用前景。

Integrity and seismic behavior of the fabricated frame structure is mainly decided by the seismic perform- ance of the node, so the study of its seismic performance of joints under reversed cyclic loading has great signifi- cance to promote the development of assembled frame. Through the notes of different reinforcement ratios of cast-in- place reinforced concrete frame and the additional angle steel precast prestress concrete frame are compared under low cyclic loading, to provide technical parameters and reliable theoretical basis for effectively improve prestressed assembling frame with energy dissipation ability. The results show that： the prestressing assembly type frame struc- ture additional angle has a good seismic performance, improves the ratio of reinforcement in a certain extent, can improve the seismic performance of joints. By the use of the node in the seismic area , convenient factory operation ,convenient construction, and has the broad application prospect.