基于HSS模型與MCC模型的深基坑降水開挖變形分析
發(fā)布時間:2019-05-17 18:30
【摘要】:在施工過程中基礎(chǔ)、隧道和基坑周圍土體除少數(shù)區(qū)域發(fā)生明顯塑性變形外,其他大部分區(qū)域土體均處于小應(yīng)變狀態(tài)(10-2%~10-1%)。本文采用PLAXIS和ABAQUS有限元軟件,土體本構(gòu)模型分別采用HS-Small模型和MCC模型,模擬基坑降水開挖,對基坑變形結(jié)果進行對比分析。結(jié)果表明,修正劍橋模型由于未能考慮土體小應(yīng)變特性,基坑位移變形模擬結(jié)果相對HS-Small模型偏大,彎矩模擬結(jié)果偏小。在進行敏感環(huán)境下的基坑降水開挖問題的數(shù)值模擬時,應(yīng)采用能考慮土體小應(yīng)變特性的本構(gòu)模型,如HSS模型。
[Abstract]:In the construction process, except for a few areas of plastic deformation, most of the soils around the tunnel and foundation pit are in a small strain state (10 鈮,
本文編號:2479315
[Abstract]:In the construction process, except for a few areas of plastic deformation, most of the soils around the tunnel and foundation pit are in a small strain state (10 鈮,
本文編號:2479315
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