Effectiveness of the Sheet Pile Wall Against House Subsidence and Incrination Induced By Liquefaction

Abstract eng:
The sheet pile wall method, a countermeasure against house subsidence and inclination induced by liquefaction, is proposed in this paper.Though a number of countermeasures against liquefaction had been proposed, few have been applied to residential housings. After the 2011 Tohoku Earthquake in Japan, a lot of residential housings had been damaged by liquefaction on that occasion, demand for the reinforcement against liquefaction, especially for the existing buildings, became apparent.The proposed method consists of the installation of short length sheet pile wall around the house foundation. Thus, this method is suitable to apply to existing housings, economically. Characteristics and advantages of this method are as follows. 1) The method is intended to prevent the house foundation ground movement due to liquefaction, however, occurrence of liquefaction is allowed. 2) The sheet piles are not reached at non-liquefiable layer existing under the liquefiable layer. It means the sheet piles are not intended to support the housing load. 3) The method is able to construct in dense residential areas. The shaking table model tests, under the gravitational (1g) and the centrifugal (40g) field, were conducted to investigate effectiveness of proposed countermeasure in terms of sheet pile wall length around house foundation. The results indicated it is able to reduce the house subsidence and inclination by using the sheet pile wall. Influence of the length of sheet pile wall in terms of house subsidence and inclination was also clarified. In addition, effective stress analyses were conducted under various ground conditions and sheet pile length. According to these results, the same effectiveness of the sheet pile wall as the model tests is also confirmed.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket