A Reinforced Soil Structure With Pile Foundation

Experimental Development of New Type Reinforced Soil Wall

“…Note, however, that the effect of the relative displacement to the internal quality of the Geo-wall body has to be studied. Application to retaining walls: High resistance characteristics against static load and dynamic earth pressure could be confirmed from the static loading test as well as the previous carried out dynamic centrifuge model test [4]- [6]. Therefore, application of Piled Geo-wall to retaining walls is sufficiently possible for all ones depending on the tolerable deformation of the Piled Geo-wall and the embankment sustained by Piled Geo-wall.…”

“…The high ductility of the Geo-wall was assumed to make it possible to transmit lateral force to the piles despite large relative displacement between the pile and Geo-wall. The validity of this assumption and practicability of Piled Geo-wall to actual diverse structure were confirmed through three experiments, a dynamic centrifuge model test [4]- [6], a static loading test and an impact-loading test. …”

“…2, which is referred to "Piled Geo-wall" in this paper, has been developed by authors. The application of piles to Geo-wall in order to improve lateral resistance is a completely new approach, since piles tend to be vertical bearing piles and are applied to soil fillings or as reinforcements to soil fillings on soft ground vertical pile [3]. In this novel approach, an assumption is made regarding the interaction between the pile and Geo-wall, as shown in Fig.…”

Development of Piled Geo-wall (A new type reinforced soil wall

“…Therefore, a new type of independent reinforced soil wall with inserting piles into the Geo-wall body, as shown in Figure 1, which is referred to "Piled Geo-wall or PGW" in this paper, has been developed. The practicability of Piled Geo-wall to diverse structures has been already confirmed from three experimental studies with full-scale static and impact loading tests and a dynamic centrifuge model test (25G) were carried out in the past years [1], [2]. Recognizing the practicability, a study on simple design method to apply Piled Geo-wall to earth-retaining walls, rock-fall protection walls, and seismic countermeasure walls of road embankment in order to reduce deformation of road surface, has been conducted.…”

“…According to the results, it is confirmed that the proposed model can reproduce the response of Piled Geo-wall and relative displacement between pile and Geo-wall body. Figure 8 shows the transverse section of the model adopted in the dynamic centrifuge test (25G) [2], which is targeted for verification of the practicability of the proposed external stability model to the design of earth retaining wall in seismic situation. In this test, Piled Geo-wall was adopted as a seismic countermeasure for prevention of large deformation of the road embankment built on a slope.…”