地铁周边市政接驳道路超载对既有地铁车站影响数值分析
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摘要
以广州地铁二号线萧岗站为工程背景,着重分析了较小覆土既有车站在增加市政接驳道路超载的工况下,主体结构弯矩、剪力的变化规律,通过断面计算与三维数值模拟,研究接驳道路荷载对车站结构内力的影响;分析表明市政接驳道路的实施引起的超载引起了主体结构内力不同程度的增加,但仍满足承载能力及正常使用性能要求。
Taking XiaoGang station of Guangzhou Metro line 2 as the engineering background, this paper focuses on the analysis of the change rules of bending moment and shear force of the main structure of the existing station with small overburden under the condition of increasing the overload of municipal connecting road. The analysis shows that the overloading caused by the implementation of municipal connecting roads causes the increase of the internal force of the main structure to different degrees, but it still meets the requirements of bearing capacity and normal service performance.
Taking XiaoGang station of Guangzhou Metro line 2 as the engineering background, this paper focuses on the analysis of the change rules of bending moment and shear force of the main structure of the existing station with small overburden under the condition of increasing the overload of municipal connecting road. The analysis shows that the overloading caused by the implementation of municipal connecting roads causes the increase of the internal force of the main structure to different degrees, but it still meets the requirements of bearing capacity and normal service performance.
引文
[1]王如路,张冬梅.超载作用下软盾构隧道横向变形机理及控制指标研究[J].岩土工程学报,2013, 35(6):1092-1011.
[2]柳献,张浩立,鲁亮,等.超载工况下盾构隧道结构承载能力的试验研究[J].地下空间与工程学报,2013(4):10-15.
[3]张明告,周顺华,黄大维,等.地表超载对地铁盾构隧道的影响分析[J].岩土力学,2016, 37(8):2271-2278.
[4]孙瞻,关森明,石玉华.某考虑荷载不利布置的地铁结构设计[J].广东土木与建筑,2013,10(10):50-52.
[2]柳献,张浩立,鲁亮,等.超载工况下盾构隧道结构承载能力的试验研究[J].地下空间与工程学报,2013(4):10-15.
[3]张明告,周顺华,黄大维,等.地表超载对地铁盾构隧道的影响分析[J].岩土力学,2016, 37(8):2271-2278.
[4]孙瞻,关森明,石玉华.某考虑荷载不利布置的地铁结构设计[J].广东土木与建筑,2013,10(10):50-52.