Simplified calculation of the settlement of a rigid composite foundation with a cap pile

The rigid composite foundation with cap pile has become a common treatment method for soft soil foundation. In order to study its settlement calculation method, the mechanism and settlement process of the pile and soil on the rigid composite foundation with cap pile are explored. The settlement calculation method of the rigid composite foundation with cap pile is analyzed simultaneously, and the main questions existing in the current calculation method are pointed out. The problem is that the calculation of the stress ratio of pile and soil is inaccurate and the settlement is larger. Assuming that the pile soil stress ratio is n, the relationship between the additional stress and the stratified settlement of the soil soil is discussed. The settlement equation of the soil around the pile is obtained by using the additional stress and the side friction resistance of the pile soil, and then the pile body and the soil deformation coordination condition of the pile and the soil around the pile are obtained. The settlement equation is combined with the settlement equation of the pile to get the accurate composite pile soil stress ratio, and finally the total settlement of the composite foundation is obtained. The settlement of the composite foundation under 100Kpa is calculated by the settlement simplified calculation method. The result shows that the simplified settlement method is close to the numerical simulation results, and can be used for reference and reference for the design of rigid composite foundation with cap pile.