首页|输电线路钢管杆桩基础断桩处理实例

输电线路钢管杆桩基础断桩处理实例

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输电线路上的钢管杆因基础占地面积较小、外形美观、能和城市景观完美融合,同时相对于角钢塔施工速度更快,能大大缩短工期,而在电力工程中得到了广泛的应用.但钢管杆的典型受力特点会导致其基础承受较大的剪力和弯矩,因此一般都会采用大直径和大深度的桩基础,而桩基础的设计和施工质量会直接影响钢管杆的结构安全和正常运行.在日常的桩基础施工过程中,由于地址条件、设备故障、混凝土供应不连续等原因,断桩的情况时有发生.通过对某输电线路钢管杆桩基础断桩过程的描述,提出加固处理方案并实施,经低应变检测其完整性满足 Ⅱ 类桩身条件,可供类似工程参考.
Treatment for a Case Fracture of Steel Pipe Pile of Transmission Line Foundation
Steel pipe poles for transmission lines have been widely used in electric engineering due to their small foundation area occupation,satisfactory appearance compatible with urban landscapes,and faster construction compared to angle steel towers.However,special mechanical characteristics of steel pipe pole make its foundations subjected to large shear force and bending moment,and therefore foundations with large diameter and depth are generally required,whose design and construction quality directly affect structural safety and normal operation of steel pipe poles.However,diversified fac-tors such as geological situation,equipment issues,and heterogeneous cementitious material supply in practical construc-tion of pile foundations lead to high incidence of pile fractures.This paper reports the occurrence of a case fracture of an actual foundation steel pipe pile of a transmission line,and the proposed corresponding reinforcement scheme of which the implementation achieved standard-qualified class Ⅱ pile body in low strain test and might provide useful information for coping with similar issues.

steel pipe polepile foundationpile fracturereinforcementultrasound testing

李洪涛

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国网电力科学研究院武汉南瑞有限责任公司,湖北 武汉 430000

钢管杆 桩基础 断桩 加固处理 超声波检测

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(3)
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