公路路基之地工技術

The Geotechnical Technology of Subgrade

林炳森(P. S. Lin) ； 張啟文(C. W. Chang) ； 呂金彥(C. Y. Lu)

《地工技術》 88期 (2001/12) Pp. 43-56

https://doi.org/10.30140/SG.200112.0003

摘要

路基土壤為路面設計時須考慮的一項重要因素，亦是決定鋪面厚度之基礎，因此需進行土壤承載力試驗來測試路基之工程性質。若遇軟弱土層，則須視現地之情形，採取適當方式處理。本文就路基之功能、常見試驗方法及發展作一簡介，並介紹軟弱土層中路基承載力不足之解決方法，如提高土壤承載力－土壤加勁、減少荷重－輕質土壤等，最後再就國內利用發泡級聚苯乙烯（EPS）作為路基材料與土壤加勁以穩定路基之案例作一探討。

關鍵字

路基 ； 土壤改良 ； 土壤加勁 ； 發泡級聚苯乙烯輕質回填材料

並列摘要

Subgrade soil, an essential factor in the road design, is often used to determine the thickness of the pavement. Since, it is involved in a series of soil strength tests, the manipulation of weak soil is required to deal with a suitable method basing on the field situation. Thus, this article aims to introduce the functions, the methods and the development of the tests for subgrade. In addition, the solutions to insufficient bearing capacity in weak soil subgrade are also introduced, such as increasing soil capacity by soil reinforcement, and decreasing loading by lightweight soil. Moreover, the case studies on the lightweight of EPS embankment and reinforced earth are also presented in this paper.

並列關鍵字

subgrade ； soil modification ； soil reinforcement ； EPS