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A platform for research: civil engineering, architecture and urbanism
PSB finish rolling screw steel anti-floating anchor rod structure and construction method thereof
The invention provides a PSB finish rolling screw steel anti-floating anchor rod structure and a construction method thereof. The PSB finish rolling screw steel anti-floating anchor rod structure comprises a long spiral press-grouting concrete pile hole, a PSB finish rolling screw steel anchor rod body, a matched anchor plate and an anchor head. The long spiral press-grouting concrete pile pile hole is formed by using a long spiral drilling machine, and the hole-forming diameter is greater than or equal to 300 mm. After the hole is formed, the hole is subjected to press-grouting concrete. Under the condition of the use amount of anchor rod reinforcements in same areas, a characteristic value of the uplift bearing capacity of the PSB finish rolling screw steel anti-floating anchor rod structure is 2.0-2.5 times higher than the characteristic value of the uplift bearing capacity of a HRB reinforcement anti-floating anchor rod structure. Moreover, the construction process of the PSB finish rolling screw steel anti-floating anchor rod structure is simplified, and the construction time is saved.
本发明提供了一种PSB精轧螺纹钢抗浮锚杆结构及其施工方法，包括长螺旋压灌混凝土桩孔、PSB精轧螺纹钢锚杆杆体、配套锚板、锚头。长螺旋压灌混凝土桩孔使用长螺旋钻机成孔，成孔直径大于或者等于300mm，成孔后压灌混凝土，同等面积锚杆钢筋用量条件下，采用本发明的PSB精轧螺纹钢抗浮锚杆结构，抗拔承载力特征值要比采用HRB钢筋的抗浮锚杆结构抗拔承载力特征值提高2.0～2.5倍。且简化PSB精轧螺纹钢抗浮锚杆结构施工工艺，节约施工时间。
PSB finish rolling screw steel anti-floating anchor rod structure and construction method thereof
The invention provides a PSB finish rolling screw steel anti-floating anchor rod structure and a construction method thereof. The PSB finish rolling screw steel anti-floating anchor rod structure comprises a long spiral press-grouting concrete pile hole, a PSB finish rolling screw steel anchor rod body, a matched anchor plate and an anchor head. The long spiral press-grouting concrete pile pile hole is formed by using a long spiral drilling machine, and the hole-forming diameter is greater than or equal to 300 mm. After the hole is formed, the hole is subjected to press-grouting concrete. Under the condition of the use amount of anchor rod reinforcements in same areas, a characteristic value of the uplift bearing capacity of the PSB finish rolling screw steel anti-floating anchor rod structure is 2.0-2.5 times higher than the characteristic value of the uplift bearing capacity of a HRB reinforcement anti-floating anchor rod structure. Moreover, the construction process of the PSB finish rolling screw steel anti-floating anchor rod structure is simplified, and the construction time is saved.
本发明提供了一种PSB精轧螺纹钢抗浮锚杆结构及其施工方法，包括长螺旋压灌混凝土桩孔、PSB精轧螺纹钢锚杆杆体、配套锚板、锚头。长螺旋压灌混凝土桩孔使用长螺旋钻机成孔，成孔直径大于或者等于300mm，成孔后压灌混凝土，同等面积锚杆钢筋用量条件下，采用本发明的PSB精轧螺纹钢抗浮锚杆结构，抗拔承载力特征值要比采用HRB钢筋的抗浮锚杆结构抗拔承载力特征值提高2.0～2.5倍。且简化PSB精轧螺纹钢抗浮锚杆结构施工工艺，节约施工时间。
PSB finish rolling screw steel anti-floating anchor rod structure and construction method thereof
一种PSB精轧螺纹钢抗浮锚杆结构及其施工方法
LUO DONGLIN (author) / LIAO HONGYE (author) / WANG LAN (author)
2020-05-19
Patent
Electronic Resource
Chinese
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