Is there any method to apply earthquake loading on buried structures other than applying earthquake record via dynamic analysis?I meant methods like HASHSH* method that are static loading instead of time history.
i want to design an underground structure.for static loading its ok and we could simulate it with plaxis 2D or 3D. but the problem rises when you want to design for earthquake included load combination.right now i use HASHASH method for 2D design but for 3d design i dont know is there anyway other than applying earthquake record(time history analysis).
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*Hashash, Youssef MA, et al. "Seismic design and analysis of underground structures." Tunneling and underground space technology 16.4 (2001): 247-293.
Dear Ahmad,
PLAXIS can be used to perform static, pseudo-static and time-domain dynamic analyses. For instance, the transverse pseudo-static soil-structure interaction analysis for racking deformations of underground structures (which is based on a 2D plane strain assumption) proposed by Hashash et al. (2001) and further detail in Hashash et al. (2010) that you mentioned can be performed in PLAXIS.
In general, an approach can be:
is there any difference for 3D analysis?
A 3D analysis is in principle more complex, thus evaluating the results requires more effort. Apart from that, you can use PLAXIS 3D, too.
ofcourse...i use plaxis 3D.i want a psedustatic procedure like HASHASH and not time hystory analysis.
PLAXIS 3D also includes pseudo-static analysis. This can be found in the Model explorer when in Staged construction.
For more information please check our reference manual. Also, the following article can also assist: Fundamentals of pseudo-static analysis in PLAXIS - PLAXIS | SOILVISION Wiki - PLAXIS | SOILVISION - Bentley Communities