上埋式涵洞土压力减载研究与数值分析

在刚性涵洞及刚性地基条件下,利用ANSYS有限元软件分析在箱涵洞顶两侧设置减载块(混凝土块体)对涵顶土压力的影响.研究表明:涵顶两侧的减载块,能够有效地改善涵洞洞顶受力情况,对涵洞顶板起到良好的减载效果:随减载块高度的加大,洞顶土压力系数直线下降.

Load Shedding Study and Numerical Analysis on The Positive-buried Culverts

Under the condition of rigid culverts and rigid foundation,adding concrete blocks to the culvert at the two sides of the top culvert,using ANSYS finite element software to do impact analysis of the concrete blocks about the earth pressure on the culvert,studies have shown that: adding concrete blocks can effectively improve the force condition of the culvert and can play a good load shedding effect for the culvert.The coefficient of vertical earth pressure on the top of the culvert plummets with the heightening of the concrete blocks.