[1]杨庆义,孙旭.交通荷载引起的软土地基累积沉降计算方法研究[J].山东建筑大学学报,2011,(02):182-185.
 YANG Qing-yi,SUN Xu.Calculation method of traffic-induced settlement of soft soil subgrade[J].Journal of Shandong jianzhu university,2011,(02):182-185.
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交通荷载引起的软土地基累积沉降计算方法研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2011年02期
页码:
182-185
栏目:
工程实践
出版日期:
2011-04-15

文章信息/Info

Title:
Calculation method of traffic-induced settlement of soft soil subgrade
作者:
杨庆义孙旭
山东电力工程咨询院有限公司, 山东 济南 250013
Author(s):
YANG Qing-yi SUN Xu
 Shandong Electric Power Engineering Consulting Institute Co., Ltd, Jinan 250013, China
关键词:
循环交通荷载软土地基累计沉降固结沉降变形模型
Keywords:
cyclic traffic load soft soil subgrade cumulative settlement consolidation settlement deformation model
分类号:
TU433
文献标志码:
A
摘要:
软土地基在交通荷载下的沉降计算和稳定性保证,是修建低路堤公路的重要环节,而科学的计算方法是其前提和基础。文章以新河(青潍界)至辛庄子高速公路寿光段为例,通过利用循环荷载作用下软粘土不排水累计变形模型—Chai-Miura模型,结合利用Flac3D有限差分程序计算地基中的动、静应力,对软土地基的累计沉降进行了计算。结果表明:对修建在软土地基上的低路堤,反复的交通荷载引起的累计沉降很大,同时变形随深度衰减很快,当深度大于8m后,变形与地表的相比小得多;路基沉降速率与运行时间关系较大,且随时间非线性增长,其中累积沉降及总沉降在通车初期累计沉降发展较快,且累积沉降远大于固结沉降,占总沉降的90%多。
Abstract:
The settlement calculation and stability guarantee under traffic load are important parts of building low embankment highway,  and the scientific calculation method is its prerequisite and basis. The cumulative settlement of soft soil subgrade is calculated by using the Chai-Miura model. Results show that the cumulative settlement is large of low embankment in soft soil foundation caused by repeated low traffic load, and deformation decays with depth rapidly. When the depth is more than 8m, the deformation is much smaller compared with the surface deformation, and the settlement rate increases nonlinearly with time. Cumulative settlement is more than 90 percents of total settlement, which develops rapidly in initial stage, and greater than the consolidation settlement.
更新日期/Last Update: 2011-07-06