土工基础

土工基础 ›› 2021, Vol. 35 ›› Issue (5): 596-600.

• 专题论述 • 上一篇    下一篇

软土地区路基沉降预测方法对比研究

王智训   

  1. （中国土木工程集团有限公司，北京 100038）
  • 收稿日期:2020-06-20 修回日期:2020-07-16 出版日期:2021-10-31 发布日期:2021-10-22
  • 作者简介:王智训（1992-），男，工程师，研究方向为工程管理研究与实践。

Comparative Study of Prediction Methods of Embankment Settlement in Soft Soils

WANG Zhixun   

  1. (China Civil Engineering Group Co., Ltd., Beijing 100038)
  • Received:2020-06-20 Revised:2020-07-16 Online:2021-10-31 Published:2021-10-22

摘要： 在我国沿海的大部分区域都分布着深厚的软土地层，由于软土地层自身的低渗透性、高压缩性等物理力学特点，使得这些区域的路基沉降机理十分复杂，造成这些区域内路基沉降预测的难度。为更好地预测软土地区路基的沉降发展，综合研究了最常用的双曲线法、指数平滑法等多种经验方法。在此基础上，结合具体软土地区的路基沉降数据，对这些方法进行评估和对比。结果表明：三次指数平滑法可精确可靠地对软土地区的路基沉降进行预测，双曲线法不太适合用于预测软土地区的路基沉降。

关键词: 软土地区, 路基沉降, 预测方法, 沉降数据

Abstract: Soft soils are deposited in most of China’s coastal areas. Due to the low permeability and high compressibility of these soft soils, the embankment settlement pattern in these areas is very complicated, which is greatly increased the difficulty in the settlement prediction. In order to have a better settlement estimation of embankment in soft soils, this paper extensively validates various empirical methods such as hyperbolic method, exponential smoothing method, etc. On this basis, combined with the embankment settlement data of the specific soft soil areas, these methods are evaluated and compared. The results show that the cubic exponential smoothing method can accurately and reliably predict the embankment settlement in soft soils; the hyperbolic method is not suitable for predicting the embankment settlement in soft soils.

Key words: soft soils, subgrade settlement, prediction method, settlement monitoring data

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