Research on the Vertical Bearing Characteristics of Strip Wall Foundation

The strip wall foundation, which is arranged in parallel intervals of multi-passage ground wall, has been applied to bridge anchoring projects in foreign countries. However, the research on load-bearing performance of this new foundation is not enough. This paper focuses on the vertical bearing characteristics, numerical research on the foundation of high and low cap wall is carried out, and the changes of vertical bearing performance of the wall are analyzed under the influence of factors such as wall height, clear distance between walls, wall thickness, wall number and buried depth of cap. The results show that: Compared with the high cap, the bearing capacity of the diagram wall foundation of the low cap increases by about 30%. With the continuous increase of the buried depth of the cap, the contribution of the end resistance decreases significantly and the contribution of the side resistance increases, but the total bearing capacity does not change significantly. However, under the influence of high efficiency stress, the increase of vertical bearing capacity decreases with the increase of wall height. With the decrease of the net distance between the walls, the relative displacement between the soil and the walls decreases under the "clamping" of the adjacent walls, the lateral friction resistance is inhibited, and the vertical bearing capacity decreases. With the increase of wall thickness, the proportion of end resistance is almost unaffected, and the increase of bearing capacity is mainly due to the increase of side friction resistance. The change of the number of walls has little influence on the friction resistance of side walls. The research results of this paper have a good reference value for the design and application of strip wall foundation.