Characteristics and Research Progress of Frost Heaving and Frost Pulling of Pile-soil System-Reference-Cited by-同舟云学术

Characteristics and Research Progress of Frost Heaving and Frost Pulling of Pile-soil System

Published:2022 Issue: Volume: Page:
ISSN:2221-3791
Container-title:IABSE Congress, Nanjing 2022: Bridges and Structures: Connection, Integration and Harmonisation
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Author:

Caixia Fan¹,Yunjia Li²

Affiliation:

1. Tongji University, Shanghai, China

2. Inner Mongolia University, Inner Mongolia Autonomous Region Hohhot, China

Abstract

<p>The frost uplift of pile foundation or other rod-shaped structures along with the frost heave of foundation soil, is a kind of frost damage widely existing in cold region engineering. These damages have always been the main problems of railway and highway subgrade, and they are controllable factors affecting the technical indexes of subgrade in cold regions. This paper explores the evolution law, cause, characteristics, and influence factors of frost heave and uplift of pile-soil system during the freezing process. The interaction between pile and soil and the mechanism of frost heave and uplift are revealed. With the analyses on distribution at pile-soil interface and influencing factors of freezing strength, the distribution law of freezing strength at pile-soil interface is clarified. Based on the previous experimental methods of frost heaving force and uplifting force, this paper discusses the problems and limitations using current methods.</p>

Publisher

International Association for Bridge and Structural Engineering (IABSE)

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