Geotechnical Engineering Circular No. 9 Design, Analysis, and Testing of Laterally Loaded Deep Foundations that Support Transportation Facilities
LATERAL ANALYSIS OF GROUPS OF DEEP FOUNDATIONS. 98
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| 7 LATERAL ANALYSIS OF GROUPS OF DEEP FOUNDATIONS. 98 7.1 Introduction ................................................................................................................................. 98 Group Effects in Lateral Loading .................................................................................................. 98 Group Efficiency. 99 Load Distribution in a Group and the p-Multiplier Concept .................................................. 100 Lateral Resistance Contribution of the Cap ................................................................................ 106 Analysis of Groups of Deep Foundation Elements. 107 Analysis of Deep Foundation Groups using Individual Pile Analysis .................................... 107 Combined Lateral and Axial Loads from Frame Action ....................................................... 110 Finite Element Programs .................................................................................................... 111 Commentary on the Use of Computer Programs for Group Analysis ................................... 111 Use of Batter Piles ..................................................................................................................... 112 Concerns Regarding the Use of Batter Piles ....................................................................... 112 Loads in Batter Piles .......................................................................................................... 113 7.5.3 P-y Analysis of Batter Piles ................................................................................................ 114 Other Considerations for Groups of Deep Foundation elements ................................................. 115 8 DESIGN FOR EXTREME EVENTS .................................................................... 116 8.1 Introduction ............................................................................................................................... 116 Extreme Event Scour (Check Flood) .......................................................................................... 116 Seismic ..................................................................................................................................... 117 Equivalent Static Seismic Force ......................................................................................... 117 Liquefaction ....................................................................................................................... 119 8.3.3 Time-History Analysis ........................................................................................................ 121 Design for Ice and Collisions. 121 Ice Loads ........................................................................................................................... 122 Vehicular Collision Loads ................................................................................................... 123 Vessel Collision Loads ....................................................................................................... 123 Combinations of Extreme Events ............................................................................................... 126 Download 6.03 Mb. Share with your friends:
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