输电线路工程中的岩石基础设计与分析

随着输电线路工程采用岩石基础的增多,岩石基础研究也越来越深入。《架空送电线路基础设计技术规定》仅对较小露头的岩石基础作出设计要求,而高露头岩石基础与之有很大的不同,因此,需要通过对岩石基础与周围岩体的耦合数值计算,探讨岩石基础的受力机理及岩石抗力分布,从而更直观地反映岩石基础与岩体的相互作用。笔者利用ANSYS平台建立参数化数值模型,得到相同地质条件不同柱长基础在考虑岩石抗力时的结果。总结得出露头和岩石抗力的关系,获得较为准确的基础受力分析数据,为规范的制定和实际工程设计提供依据。

Design and Analysis of Rock Anchor Foundation in Transmission Line Project

Researches for rock anchor foundation have been deepened as rock anchor foundation being widely used in transmission line projects.However,regulation for high outcrop rock anchor foundation is different with low outcrop one in technical regulation for designing foundation of overhead transmission line.Therefore,it is necessary to calculate coupling of rock anchor foundation and rock around it to analyze stress mechanism of rock anchor foundation and distribution of rock resistance and to reflect interaction of rock anchor foundation and rock body intuitively.This article has established parameter numerical model with ANSYS software.Considering rock resistance,results of different long piles have been obtained under the same geological conditions.With mathematics statistical analysis on the results and comparison of different stress mechanisms,relations between outcrop and rock resistance have been summarized and the more accurate foundation stress analytical data has been obtained,which provide basis for standard formulation and practical engineering design.