LONGITUDINAL STRENGTH AND STIFFNESS BEHAVIOR OF BRIDGE ABUTMENTS
Two, approximately one-half scale, end-diaphragm abutments have been tested to failure. Special attention is focused on the stiffness and strength characteristics of the west abutment system which was designed and constructed to simulate, as accurately as possible, an actual abutment system. The ultimate strength value compared well with the typically used 7.7 ksf (370 kPa) and demonstrated a level of conservatism. The typically used 200 kip/inch/foot (115 kN/mm/m) stiffness term was identified to be significantly high for typical deformations expected. For ultimate longitudinal strength, designers are offered a rational alternative in the form of Equations 5 through 8 in this report. The four equations of this ultimate capacity model arise from a modified Mohr-Coulomb wedge approach based upon the interpretation of the physical test result. For stiffness it is recommended that a calibrated curve like shown in Figure 15 be used as a minimum as it respects the dependence of stiffness on deformation.
- This report is an Executive Summary of Report UCD-STR-95-1 and deals exclusively with the longitudinal test.
University of California, DavisPavement Research Center, One Shields Avenue
Davis, CA United States 95616
Sacramento, CA United States 95814
- Romstad, K
- Kutter, B
- Maroney, B
- Vanderbilt, E
- Griggs, M
- Chai, Y H
- Publication Date: 1996-7
- Features: Figures; References;
- Pagination: 42 p.
- TRT Terms: Bridge abutments; Earthquake resistant design; Equations; Longitudinal stiffeners; Longitudinal strength; Scale models; Ultimate strength
- Uncontrolled Terms: Model tests
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
- Accession Number: 00727212
- Record Type: Publication
- Report/Paper Numbers: UCD-STR-96-1
- Contract Numbers: 59 Q 183
- Files: TRIS, STATEDOT
- Created Date: Oct 4 1996 12:00AM