The construction technique of precast installed culvert at high-ice content frozen soil;

In this country,the erectable rectangular segment has not been adopted,with its relevant theory of design or calculation falling short of soundness.

Based on the observation of variable process of ground temperature of the experimental precast installed culvert built in the Qingshuihe permafrost area,the temperature change and the heatmoisture migration in permafrost active layer are analyzed by taking the effect of the hydration heat of concrete of culvert foundation into account.

Experimental and theoretical study on earth pressure on top of rectangular trench-buried culverts;

Under the condition of rigid culverts and rigid subgrade, the vertical earth pressure on the top of rectangular trench-buried culverts was analyzed theoretically, and a new model and formulae to evaluate the earth pressure are proposed with the consideration of the effect of soil mass beside culverts.