Phương pháp xác định các đặc trưng của dòng thấm trong nền cát dưới đáy cống qua đê có cọc bê tông cốt thép gia cố nền

Abstract

There have been many incidents of under-dike culverts on sand foundation due to seepage and mostly occurs in culverts with reinforced concrete piles. Experimental results reveal that when driving reinforced concrete piles into the sand foundation, they have a significant impact on the seepage flow at the bottom of the culvert. This posed the need to consider the influence of reinforced concrete piles when driving them into the sand foundation during the calculation of permeability. This article provides a method to calculate the seepage head, seepage exit gradient for under-dike culverts built on sand foundation in the Red river delta with reinforced concrete piles based on the adjustment coefficients drawn from model test results.