采用 ANSYS 有限元软件，对某煤矿区简支梁桥进行了数值模拟计算，分析了该桥在采动条件下的稳定性，指出该简支梁桥在地表倾斜变形为3.5 mm／ m 时，结构失去原有承载力，需采取加固措施后才可继续使用。%Using the ANSYS finite element software,this paper made numerical simulation calculation for a certain coal mining area simply sup-ported girder bridge,analyzed the stability of the bridge under the mining condition,pointed out that the earth’s surface tilting deformation was 3. 5 mm/ m of the simply supported girder bridge,the structure lost original bearing capacity,should be taken to continue to use after reinforce-ment measures.
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