摘要
钢轨抗拉强度高(≥880MPa)、抗弯性能好(工字型截面),将大截面抗滑桩中的纵向受力钢筋替换为旧钢轨,可形成具有抗滑能力强、投资节省的钢轨抗滑桩。通过查阅相关文献、规程规范和技术研发,形成了钢轨抗滑桩专利技术,它成功解决了大截面钢轨抗滑桩应用中旧钢轨强度取值较难、钢轨与混凝土握裹力不足、鱼尾板连接刚度不够且连接处强度低等限制大规模工程应用的关键技术问题。将大截面钢轨抗滑桩成功应用于构皮滩水电站石棺材崩坡积体治理。监测资料表明滑坡体变形较小,建成后经过2014年约100年一遇暴雨考验和近8年的安全运行,证明了大截面钢轨抗滑桩在大型滑坡治理中具有广阔的应用前景。
The rail has high tensile strength(≥880 MPa)and good bending resistance(I-shaped cross-section).The longitudinally stressed steel bars in anti-slide pile can be replaced with old steel rails,which can form rail anti-slide pile with large anti-slip capability.By analyze the related literatures,regulations and technical research,form patent technology for rail anti-slide pile,a technology was proposed which can successfully solve the issues which including difficulties to determine the strength of the rail,insufficient gripping between rail and concrete,insufficient rigidity and low joint strength of the fishplate connection,which limit the widespread application,and it is successfully applied to the treatment of Shiguancai colluvial slope at Goupitan Hydropower Station.The monitoring data show that the deformation of the landslide mass is relatively small.After the completion of the project,it has stand the test of 2014 rainstorm about once in 100 years and 8 years of safe operation,which has effectively promoted the engineering application of the large cross-section rail pile.
作者
闵征辉
邹德兵
MIN Zhenghui;ZOU Debing(Chang Jiang Survey Planning Design and Research Co.,Ltd.,Wuhan,Hubei 430010,China;National Dam Safety Research Center,Wuhan,Hubei 430010,China)
出处
《水利与建筑工程学报》
2020年第3期99-103,共5页
Journal of Water Resources and Architectural Engineering
基金
国家重大研发课题“岸坡堤坝滑坡监测预警与修复加固关键技术及示范应用”(2017YFC1501200)。
关键词
大截面
钢轨
抗滑桩
加糙
关键技术
large cross-section
rail
anti-slide pile
roughness
key technology
