考虑施工缺陷的输电线路承台式岩石锚杆基础承载力研究

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摘 要：基于考虑粘结-滑移的界面本构关系，研究在典型施工质量缺陷条件下承台式岩石锚杆基础在上拔荷载作用下的界面破坏过程及抗拔承载力的变化规律。研究表明：考虑施工缺陷情况下，此类基础与单根锚杆的破坏形式存在差异，且与锚固长度、缺陷部位等因素有关。建议工程中增加锚杆检测数量，以确保基础安全可靠。

关键词：承台式；岩石锚杆基础；抗拔承载力；质量缺陷

中图分类号：TU472

文献标志码：A

文章编号：1001-5922（2023）07-0155-04

Study on bearing capacity of transmission line rock bolt foundation with pile-cap platform considering construction defects

XU Weizhong1，GOU Ming1， ZHANG Liguang1，CHEN Zhong1，CHEN Yanfa1，YAN Xiaoming2

（1.Yichang Electric Power Survey & Design Institute Co.，Ltd.，Yichang  443000，Hubei China; 2.College of Electrical Engineering & New Energy，China Three Gorges University，Yichang  443000，Hubei China

）

Abstract：

Based on the bond-slip interface constitutive relation，the interface failure process and the change law of the pulling capacity of such foundation under the uplift load are studied under the condition of typical construction quality defects.The research shows that the failure form of such foundation is different from that of single anchor bolt when considering construction defects，and it is related to anchoring length，defect location and other factors.It is recommended to increase the number of bolt detection in the project to ensure the safety and reliability of the foundation.

Key words：pile-cap platform;rock bolt foundation;pulling capacity;quality defects

承台式岩石锚杆基础是山区输电线路工程中常见的上拔基础形式。（剩余4673字）