Study on Design and Mechanical Characteristics of Soft Soil Subgrade Pile-supported Retaining Wall
In order to improve the construction quality of soft soil subgrade retaining wall,a new pile-supported retaining wall design scheme was proposed with a municipal road project in Jiangsu as an example,and the stability of the design scheme was verified.The mechanical de-formation characteristics of the scheme are simulated and analyzed,and the effect of construction application is evaluated.The results show that except for pile No.1,the negative bending moment of pile body decreases first,then increases and then decreases with the increase of depth,and there are two significant reverse bending points.With the increase of distance from the center of the subgrade,the settlement of the top surface of the subgrade decreases steadily at first and then rapidly,and the maximum settlement of the top surface of the subgrade is 40 mm.The closer to the retaining wall,the larger the maximum pile bending moment,the larger the horizontal displacement and the larger the slope of the horizontal displacement depth curve.The stability safety factor of pile supported retaining wall is 1.2,which is greater than the required value,that is,the pile supported retaining wall has strong bearing capacity and good treatment effect.
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