摘要
箱型竖向预应力抗滑桩是一种新型抗滑桩,截止目前国内外尚未发现此类研究成果,通过建立有限元模型,采用三种不同结构抗滑桩,即传统实心抗滑桩、箱型钢筋混凝土抗滑桩和箱型竖向预应力混凝土桩,在不同混凝土等级强度和1 000 kN、1 500 kN、2 000 kN三种滑坡推力等条件下进行计算,根据桩身位移、剪力和弯矩大小变化进行对比分析后,说明箱型竖向预应力抗滑桩抗滑效果远远优于其它抗滑桩,同时该桩也具滑坡体内排水,节省工程费用及抗滑桩内检测维护方面的优点,值得进一步研究和推广。
The box vertical pre-stressed anti-slip pile is a new anti-slip pile. There is no this kind of study result now at home and abroad. The finite element model is established to calculate three different structural anti-slip pile of traditional solid anti-slip pile, box steel reinforced concrete anti-slip pile and box vertical pre-stressed concrete pile under the conditions of the different concrete grading intensities and three landslide thrusts of 1 000 kN, 1 500 kN and 2 000 kN. According to the comparison and analysis of displacement, shear and bending moment variation of pile body, the results show that the anti-slip effect of box vertical pre-stressed anti-slip pile is far better than the other anti-slip piles, and also this pile has the advantages of landslide in-drainage, saving engineering cost and inspection and maintenance within anti-slip pile. This pile is worth further study and promotion.
出处
《城市道桥与防洪》
2014年第10期178-181,16,共4页
Urban Roads Bridges & Flood Control
基金
甘肃省科技支撑计划研究项目(1304FKA055)
甘肃省高等学校科研项目(2013B-124)
关键词
箱型结构
竖向预应力
抗滑桩
排水
检测维护
box structure,vertical pre-stressing,anti-slip pile,drainage,inspection and maintenance
