MODIFIED GENERALIZED PUSHOVER ANALYSIS FOR ESTIMATING LONGITUDINAL SEISMIC DEMANDS OF BRIDGES WITH ELEVATED PILE FOUNDATION SYSTEMS

Authors

  • SASA CAO STATE KEY LABORATORY OF DISASTER REDUCTION IN CIVIL ENGINEERING
  • WANCHENG YUAN STATE KEY LABORATORY OF DISASTER REDUCTION IN CIVIL ENGINEERING

Keywords:

PUSHOVER ANALYSIS, MODIFIED GPA, BRIDGES WITH ELEVATED PILE FOUNDATION SYSTEM, CONTRIBUTIONS OF HIGHER MODES, MPA

Abstract

IN LONGITUDINAL MULTI-MODE PUSHOVER ANALYSIS OF BRIDGES WITH ELEVATED PILE FOUNDATION SYSTEMS, THE INELASTIC CONTRIBUTIONS OF THE SECOND MODE CANNOT BE NEGLECTED. GENERALIZED PUSHOVER ANALYSIS CANNOT BE APPLIED DIRECTLY IN THIS CONDITION. A MODIFIED GENERALIZED PUSHOVER PROCEDURE IS DEVELOPED FOR ESTIMATING SEISMIC DEMANDS OF BRIDGES WITH ELEVATED PILE FOUNDATION SYSTEMS. MODIFIED GENERALIZED PUSHOVER PROCEDURE, MODAL PUSHOVER ANALYSIS AND INCREMENTAL DYNAMIC ANALYSIS OF A BRIDGE WITH ELEVATED PILE FOUNDATION SYSTEMS ARE CONDUCTED. THE RESULTS SHOW THAT THE MODIFIED GENERALIZED PUSHOVER PROCEDURE CAN PROVIDE REASONABLE ESTIMATIONS OF MOMENTS AND PREDICT MORE ACCURATE PLASTIC HINGE ROTATIONS COMPARED WITH MODAL PUSHOVER ANALYSIS.

Author Biographies

SASA CAO, STATE KEY LABORATORY OF DISASTER REDUCTION IN CIVIL ENGINEERING

OFFICE 505, BRIDGE HOUSE
TONGJI UNIVERSITY
1239 SIPING ROAD
SHANGHAI, CHINAϼ200092

WANCHENG YUAN, STATE KEY LABORATORY OF DISASTER REDUCTION IN CIVIL ENGINEERING

OFFICE 409, BRIDGE HOUSE
TONGJI UNIVERSITY
1239 SIPING ROAD
SHANGHAI, CHINAϼ200092

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Published

2014-11-04

Issue

Vol. 11 No. 14 (2014)

Section

Articles

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