https://communities.bentley.com/members/768fe5f0_2d00_5e8b_2d00_4306_2d00_951a_2d00_39b34b9ab63fRecent activity for people in Kalyani Singh's communityen-USTelligent Community 12https://communities.bentley.com/products/geotech-analysis/f/forum/252031/mstage-and-surface-loadFri, 03 Nov 2023 12:10:33 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:50e9565e-705f-4f4e-9548-abebadd706a2xin Fang<p>Hi Plaxis Forum</p> <p>I have a model of a shield tunnel in plaxis3d. The model is run to an Mstage=0,8 for the excavation of the tunnel (Phase 1); in the following phase, a concrete lining is activated and the model run to Mstage=1 (Phase 2).</p> <p>My question is, if at phase 1 and phase 2, a surface load of 20kpa was applied to the earth&#39;s surface. Is it true that only 80 percent of the surface load is effective in phase 1, and only fully effective in phase 2?</p> <p>Is this phenomenon reasonable? In actual engineering, the surface overload such as vehicle load in phase 1 and phase 2 should be the same, instead of 80% in phase 1 and 100% in phase 2.</p> <p></p><div style="clear:both;"></div>