摘要
以南宁大桥的扣索地锚和缆索地锚为对象,研究扣索地锚和缆索地锚的内力性状。采用有限元计算软件AN SYS中的so lid45和beam 44对南宁大桥扣索地锚和缆索地锚的实际情况进行建模,分析和比较在不同工况条件下扣索地锚和缆索地锚的受力状况。结果表明:地锚分别采用实体单元与梁单元模型,其计算结果基本相同;承台顶部的配重对结构桩体的轴向力影响相对较大达到17%,但对弯矩的影响都很小,效应都小于1%;结构自身具有较好的抗拔性能。大桥吊装的顺利实施证明:采用合理的地锚结构比对结构施加配重更为经济合理。
Based on the case of the button cable ground anchor and the cable ground anchor of Nanning bridge, its the internal force characteristics were stndied. ANSYS solid45 and beam44 were adopted to modeling, analyzing and comparing the force status in different working conditions. The ground anchor which adopted the model of solid element and the beam element separately got the same calculation result. The effect of the counterweight of the top bearing platform on the axial of the pile body construction reached 17% relatively, but on bending moment it was less than 1%. Finally, the structure itself had better pullout behavior. The successful case proves that suitable ground anchor stucture is more ecomomic than applying counterweight to the engineering example.
出处
《解放军理工大学学报（自然科学版）》
EI
北大核心
2009年第6期618-622,共5页
Journal of PLA University of Science and Technology(Natural Science Edition)
关键词
地锚
内力性状
缆索吊装无支架法
吊扣合一塔架系统
ground anchor
internal force characteristics
non-support cable hoisting method
system of integrated construction of cable erection bent tower fastening
