微型桩群的抗滑机理及设计理论的研究

发布时间：2019-06-06 21:09

【摘要】：微型桩群在滑坡防治方面具有独特的优势,已被广泛用于工程实践中。首先,根据前人的室内模型试验和现场原位试验成果,阐述影响微型桩群抗滑性能发挥的各种因素,如桩顶约束形式、桩身配筋方式、桩间距、锚固长度、土的含水率等,并从桩-土相互作用的角度总结微型桩侧土压力分布的机理,进而确定桩身内力,且根据刚度的不同归纳微型桩的受弯破坏和弯剪破坏的破坏形式;其次,介绍了微型桩群的抗剪强度法、弹性地基梁法、p-y曲线法等方法,指出其优缺点;最后,提出了目前微型桩群理论研究与试验研究方法的不足,尤其在降雨条件下、地震等作用下的研究很少,并提出一些建议。
[Abstract]:Micro pile group has unique advantages in landslide prevention and control, and has been widely used in engineering practice. First of all, according to the results of laboratory model test and in-situ test, various factors affecting the anti-skid performance of micro pile group, such as pile top constraint form, pile reinforcement mode, pile spacing, anchoring length, soil moisture content and so on, are expounded. The mechanism of soil pressure distribution on the side of micro pile is summarized from the point of view of pile-soil interaction, and then the internal force of pile body is determined, and the failure forms of bending failure and bending shear failure of micro pile are summarized according to the different stiffness. Secondly, the shear strength method, elastic foundation beam method and p 鈮，

本文编号：2494600