高承台桩基竖向沉降及荷载传递研究

Research on vertical settlement and loadtransmission of pile foundation with elevated cap

桩体竖向沉降是建筑物稳定的基础,为了研究高承台基础桩基的沉降特点和桩周土体固结对桩体产生的影响,采用模型试验和数值模拟的研究方法对高承台桩基的沉降及桩基荷载传递特点,桩周土体固结对桩基产生的力学响应进行了研究。研究表明增大承台荷载显著增加桩体沉降量,而且在排水固结的情况下周围土体产生的下拽力导致桩端变形增大。

The vertical settlement of the pile is the stable foundation of the building,in order to study the settlement characteristics of the pile foundation of the elevated cap foundation and the influence of the consolidation of the soil around the pile on the pile.Model tests and numerical simulations are used to study the settlement of the elevated cap pile foundation and the load transfer characteristics of the pile foundation,and the mechanical response of the soil consolidation around the pile to the pile foundation.Studies have shown that increasing the load on the pile cap significantly increases the settlement of the pile,and the drag force generated by the surrounding soil under the condition of drainage and consolidation causes the deformation of the pile end to increase.