The seismic improvement and control of weak concrete frames with partial concrete shear walls

作者：Kaltakci M Yasar; Yavuz Gunnur^*

来源：Journal of Vibration and Control, 2014, 20(8): 1239-1256.

DOI：10.1177/1077546312467220

• Partial shear wall
• pushover analysis
• reinforced concrete
• strengthening
• weak frame

Controlling the lateral movement of buildings under earthquake effects is very important to prevent total collapse and therefore reinforced concrete (RC) shear walls are used to obtain the lateral stability of such buildings. In this study, the usability of partial RC shear walls to strengthen buildings with weak earthquake behavior was investigated. The basic parameters of the study were determined to be the ratio of shear wall height to shear wall length (H-w/L-w) and whether the upper inflection point of the bent bar, a steel bar commonly used in the beams of RC buildings in Turkey, is integrated into or bent outside of the partial shear wall section. Three units of two-story, double-span weak RC frames were produced at a one-third scale. Two of these three frames were then strengthened by partial shear walls integrated on both sides of the central column. Strengthened and non-strengthened specimens were tested under reversed-cyclic lateral loading. The frame systems strengthened via partial RC shear walls showed significant improvement in strength and stiffness. No debonding was observed in the anchorage rods used in the shear wall-foundation connection.

• 出版日期2014-6