Geotechnical Engineering Circular No. 9 Design, Analysis, and Testing of Laterally Loaded Deep Foundations that Support Transportation Facilities
DESIGN PROCESS AND TEAM ROLES FOR ANALYSIS OF LATERALLY
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| 5 DESIGN PROCESS AND TEAM ROLES FOR ANALYSIS OF LATERALLY LOADED DEEP FOUNDATIONS. 47 5.1 Design Process ........................................................................................................................... 47 Design Team Roles ..................................................................................................................... 59 5.2.1 Geotechnical Responsibilities in Lateral Loading Analysis .................................................... 59 Structural Responsibilities in Lateral Loading Analysis .......................................................... 61 Other Team Members .......................................................................................................... 62 Need for Communication and Coordination .................................................................................. 62 6 ANALYSIS FOR LATERALLY LOADED SINGLE DEEP FOUNDATION ELEMENTS ...................................................................................................... 64 6.1 Introduction ................................................................................................................................. 64 6.2 Geotechnical Strength Limit State of Laterally Loaded Piles ......................................................... 65 6.3 P-y Method .................................................................................................................................. 68 Characteristics of P-y curves ................................................................................................ 71 Factors Affecting P-y Curves ................................................................................................ 73 Limitations ........................................................................................................................... 74 Recommendations Regarding P-y Method ........................................................................... 74 Strain Wedge Model .................................................................................................................... 75 Recommendations Regarding Strain Wedge Model Method ................................................. 78 6.5 Broms Method ............................................................................................................................. 78 6.5.1 Broms Method for Cohesive Soils. 79 6.5.2 Broms Method for Cohesionless Soils .................................................................................. 81 Recommendations Regarding Broms Method. 82 Other Analysis Methods for Laterally Loaded Deep Foundations .................................................. 82 Other Design Considerations ....................................................................................................... 83 Selection of Deep Foundation Type and Size ....................................................................... 83 Point of Fixity or Equivalent Depth of Fixity ........................................................................... 83 Free Head vs. Fixed Head (Effect of Pile Cap) ..................................................................... 89 When to Consider Anchors or Braces for Lateral Support of Deep Foundations .................... 89 Scour ............................................................................................................................. 90 Sloping Ground Surface ....................................................................................................... 91 Deep Foundations Socketed in Rock .................................................................................... 92 Loading Considerations. 93 6.7.9 Frost/Desiccation Depth, Loss of Contact, Etc. ..................................................................... 95 iii Other Design Considerations ............................................................................................... 95 Download 6.03 Mb. Share with your friends:
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