输电铁塔基础偏心应用研究

Research on Eccentric Application of Transmission Tower Foundation

对铁塔桩基础地脚螺栓偏心与双桩承台主柱偏心进行了受力分析,以桩身弯矩及单桩竖向力为评价指标,对偏心布置后基础主要受力参数进行了分析;对比了5种不同的双桩承台基础布置型式的受力差异,分析了不同布置型式对基础工程量的影响,结果显示基础偏心可减弱水平荷载产生的不利效应,使受力更加合理,基础偏心及基础合理布置方式对优化基础工程量效果显著。

The force analysis of eccentric anchor bolt of tower pile foundation and eccentric main column of double pile cap is carried out.Taking the bending moment of pile body and vertical force of single pile as evaluation indexes,the main force parameters of foundation after eccentric arrangement are calculated and compared.The stress differences of five different double pile pile pile foundation layout types are compared,and the influence of different arrangement forms on the foundation engineering quantity is analyzed.The results show that the foundation eccentricity can weaken the adverse effects of the horizontal load,make the force more reasonable,and the foundation eccentricity and the reasonable arrangement of the foundation have a significant effect on optimizing the amount of foundation engineering.