灌注桩后压浆施工工艺

Construction Process of Post Mud-jacking for Cast-in-place Pile

为了改善灌注桩持力层受力状况,在地质条件为碎石、卵石层的土层中进行灌注桩施工后,再将水泥浆液在压力作用下由预埋钢管向碎石、卵石层的孔隙里四周扩散,这相当于增加了灌注桩端部的直径和桩长,对提高灌注桩桩基的承载力和控制沉降量效果明显。

In order to improve load-bearing performance of the cast-in-place piles that are cast in the stratum with broken stone and pebble stone, concrete mud is pressed into the pores of the stones and it will diffuse along the embedded pipe. Post mud-jacking means the enlargement of the cast-in-place piles＇ bottom diameter and the length, which will remarkably improve the bearing capacity of the pile foundation and lessen the settlement effect.