Strutted lvl beam span table usa code#

Huo YL, Zhang J (2013) Effects of pounding and skewness on seismic responses of typical multispan highway bridges using the fragility function method. ACI Struct J 104(4):393–401ĭimitrakopoulos EG, Paraskeva TS (2015) Dimensionless fragility curves for rocking response to near-fault excitations. J Struct Eng 128(4):526–533Ĭorreal JF, Saiid S, Sanders D, El-Azazy S (2007) Shake table studies of bridge columns with double interlocking spirals. Office of Structures Design, California Department of Transportation, SacramentoĬornell C, Jalayer F, Hamburger R, Foutch D (2002) Probabilistic basis for 2000 SAC Federal Emergency Management Agency steel moment frame guidelines.

Probab Eng Mech 23(1):12–22Ĭaltrans (2006) Seismic design criteria version 1.4. PEER report 2011/03, Pacific Earthquake Engineering Research Center, University of California, Berkeley, USAīanerjee S, Shinozuka M (2008) Mechanistic quantification of RC bridge damage states under earthquake through fragility analysis. American Concrete Institute, Farmington Hillsīaker JW, Lin T, Shahi SK, Jayaram N (2011) New ground motion selection procedures and selected motions for the PEER transportation research program.

Strutted lvl beam span table usa code#

The fragility curves suggested in this research can be used by stakeholders in deciding the retrofitting and maintenance strategies of bridges with architectural flares.ĪCI Committee 318 (2011) Building code requirements for reinforced concrete (ACI 318-11) and commentary. Thus, the flare does not necessarily reduce the seismic performance for all bridge cases and depends on the failure mode associated with the bridge configuration. Results reveal that the presence of column flare for the case study bridges increases the stiffness and strength of columns because of a low potential of column shear failure, resulting in the reduction of bridge vulnerability and have beneficial effects on the structural functionality. Fragility curves for each bridge class are generated by accounting for the material, geometric, and structural uncertainties, and the effects of column flare on the seismic demand and fragility of bridges are investigated in detail in this paper.

The calibrated models are used to develop the fragility curves for California bridges. The numerical model of the columns with and without flare is calibrated with existing experimental results. This research examines the relative vulnerability of bridge configurations with flared and non-flared columns for three-span two-column bent bridges with oblong cross-sections.

Earthquake reconnaissance reports indicated that the flare is detrimental on the structural functionality of the bridge with some geometric configurations. The increased aesthetic appeal of columns with flares resulted in bridge configurations with flared columns during the 1970–1990 design periods in California.