PSI - Issue 33

Anas Ibraheem et al. / Procedia Structural Integrity 33 (2021) 942–953 Anas Ibraheem, Yulia Pronina / Structural Integrity Procedia 00 (2019) 000–000

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The correction factors of embedment are calculated using the equations detailed in ASCE/SEI 41 (2013).

4. A new procedure that takes into account the influence of foundation settlements in the analysis and design 4.1. Basic information on commercial structural software (as well as on our software) 4.1.1. Load patterns. A load pattern is a specified spatial distribution of forces and displacements that act upon the structure. Each load pattern may consist of an arbitrary combination of the available load types: concentrated forces and moments acting at the joints, displacements at the grounded ends of joint restraints, self- weight and/or gravity acting on all element types, concentrated or distributed forces and moments acting on the frame elements. Users can define as many load patterns as they want, each with a unique name that they specify. Within each load pattern, any number of joints or elements may be loaded by any number of different load types. Each load pattern has a design type, such as DEAD, LIVE, WIND, or QUAKE. This identifies the type of load applied so that the design algorithms know how to treat the load. 4.1.2. Restraint supports. If the displacement of a joint along any of its available degrees of freedom has a known value, either zero (e.g., at support points) or non-zero (e.g., due to support settlement), then a restraint must be applied to that degree of freedom. 4.1.3. Ground displacement load. Ground displacement load is a specified ground displacements (translations and rotations) along the supported degrees of freedom at the joints.

Fig. 2. The calculation scheme.