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浙江大学学报(工学版)
J4  2011, Vol. 45 Issue (1): 106-111    DOI: 10.3785/j.issn.1008-973X.2011.01.017
土木工程     
考虑次固结时循环荷载引起的软基沉降
胡亚元
浙江大学 岩土工程研究所 软弱土与环境土工教育部重点实验室,浙江 杭州 310058
Settlement of soft ground induced by cycle load considering
secondary settlement
HU Ya-yuan
Key Laboratory of Soft Soils and Geoenviromental Engineering of Ministry of Education,
Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China
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摘要：

为了控制在循环荷载作用下软基路堤的总沉降和工后沉降,采用能够综合考虑主、次固结沉降的Yin-Graham一维等效时间线模型和一维条件下软土“最终”沉降与应力路径无关的性质,获得在正弦循环荷载作用下路堤运行期间长期总沉降和工后沉降近似计算公式,建立路堤总沉降和工后沉降与回弹指数、压缩指数、蠕变系数、初始有效应力、路堤承受的静荷载幅值和动荷载幅值之间的关系,除上述影响因素外,工后沉降还与运行期开始时路堤下软基的总有效应力有关.利用沉降公式计算具体工程软基路堤运行期结束时的长期总沉降量,计算误差小于0.275％.
Abstract:

In order to control the total settlement and the post-construction settlement of road embankment under cyclic load on soft clay,  Yin and Graham’s one-dimensional equivalent timeline model which can predict both primary and secondary consolidation settlements and the behavior that the one-dimensional “ultimately” settlement of clay is independent of stress path were utilized. Then the approximate formulae of long term total settlement and post-construction settlement of road embankment during the service life induced by the cyclic periodic loading were derived.The relationship between the total and post-construction settlements of road embankment and the swelling index, the compression index, the secondary compression coefficient, the original effective stress, the magnitude of dead load and the magnitude of active load overburdened by soft ground was established. Besides the above influent factors, the post-construction settlement was also rest on the total effective stress at the start of service life within soft subsoil beneath road embankment.The long term total settlement of soft subsoil beneath road embankment at the end of service life was calculated based on the settlement formulae  for the define engineering. The calculation error was smaller than 0.275％．
出版日期: 2011-03-03
:  TU 435.5  
作者简介: 胡亚元(1968-)，男，浙江兰溪人，副教授，从事环境土工和土体本构关系的研究.E-mail：huyayuan@ccea.zju.edu.cn
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引用本文:

胡亚元. 考虑次固结时循环荷载引起的软基沉降[J]. J4, 2011, 45(1): 106-111.

HU Ya-yuan. Settlement of soft ground induced by cycle load considering
secondary settlement. J4, 2011, 45(1): 106-111.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.01.017    或    http://www.zjujournals.com/eng/CN/Y2011/V45/I1/106

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