Development and Implementation of Modified Partial Capacity Design (M-PCD) with Nonlinear Structural Analysis on Regular Buildings

Adicahya, Ruben and Pudjisuryadi, Pamuda (2024) Development and Implementation of Modified Partial Capacity Design (M-PCD) with Nonlinear Structural Analysis on Regular Buildings. In: International Conference on Civil, Architecture, Environmental Engineering and Technology, 28-09-2024 - 28-09-2024, Surabaya - Indonesia.

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Abstract

The Modified Partial Capacity Design (M-PCD) method is a development of the Partial Capacity Design (PCD) method aimed at improving seismic design of structures that allows partial side sway mechanism. M-PCD ensures some columns to remain elastic by using two design models: Model 1 which is subjected to earthquake with response modification coefficient, R = 8 for beams and plastic columns design, and Model 2 which is subjected to earthquake with R = 1 for elastic columns design. This study evaluates the effectiveness of the proposed M-PCD method, particularly in comparison to the M-PCD method by Santoso and Wiranata (2024), focusing on improvement of elastic columns design. Structural performance evaluation is conducted using the Nonlinear Dynamic Procedure (NDP) or time history analysis with a Risk-Targeted Maximum Considered Earthquake (MCER) level. Results indicate that the structure designed using the previous M-PCD method tends to reflect partial side sway mechanism more than the proposed M-PCD method unexpectedly. In addition, FEMA 273 criteria regarding plastic hinge damage levels in plastic columns and beams are still exceeded, but FEMA 273 drift criteria are met in all structural models. One possible reason for the excessive damage levels is that the assumption of ductility possessed by the structure is not as high as conventional special moment resisting frame (R = 8). Logically, the structure will experience plastic damage more than expected.

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