RC FRAME-SHEAR WALL STRUCTURES WITH PARTIAL COLUMNS SLIDING AT UPPER ENDS AND WITH SOME BEAMS CONSIDERING CATENARY ACTION

摘要

A new kind of RC frame-shear wall structures with partial columns sliding at upper ends is proposed in this paper, and the corresponding design procedures considering catenary action of frame beams are suggested. Elastic-plastic analyses are conducted for both the proposed structures and conventional frameshear wall structures, and their construction costs and earthquake responses are compared. Simulation results show that: (a) Although the construction cost of the proposed structures is a little higher than that of the conventional frame-shear wall structures, the anti-collapse capacity of the proposed structures is better than that of the conventional structures; and (b) The incremental percentages of quantities of concrete and steel for the proposed structure considering catenary action are, respectively, 13 percentages and 7 percentages less than those neglecting the catenary action. The vertical load bearing capacities of the proposed structure under strong earthquake can be maintained, which ensure 'No collapse under strong earthquake '.