论文部分内容阅读
采用原位测试方法,对软基上高路堤中埋设盖板涵的受力和沉降进行了测试,分析了涵洞和填土的沉降特点,涵洞受力规律。研究结果表明:涵顶土压力呈不均匀分布,两侧墙顶土压力大于涵洞中部,涵洞和填土之间的差异沉降导致涵顶发生土压力集中,涵顶土压力为填土自重的0.99~2.71倍;涵顶平面两侧填土中土压力分布规律为:由侧墙顶向两侧,随距离的增加,土压力为先减小而后又增加,在邻近边坡位置,受边坡影响土压力逐渐减小;涵洞侧墙土压力呈非线性分布,涵洞倾斜引起涵洞两侧墙土压力的非对称分布,实测水平土压力为静止侧压力的0.22~0.80倍。
The in-situ test method is used to test the force and settlement of the culvert buried in high embankments on soft foundations. The settlement characteristics of culverts and fillings and the laws of stress of culverts are analyzed. The results show that the pressure on the culvert is unevenly distributed, the pressure on the top soil on both sides of the culvert is greater than that in the middle part of the culvert. The differential settlement between the culvert and the fill leads to the concentration of earth pressure on the culvert and the pressure on the culvert is 0.99 ~ 2.71 times. The distribution of earth pressure in the earth filling on both sides of the culvert is as follows: from the top of the side wall to both sides, with the increase of the distance, the earth pressure decreases and then increases again. At the adjacent slope, The influence of soil pressure gradually decreases; the earth pressure on the side wall of the culvert is non-linearly distributed, and the inclination of the culvert causes the asymmetrical distribution of earth pressure on both sides of the culvert. The measured earth pressure is 0.22 to 0.80 times of the static pressure.