發(fā)布時間：2019-06-06 21:09

【摘要】：微型樁群在滑坡防治方面具有獨(dú)特的優(yōu)勢,已被廣泛用于工程實踐中。首先,根據(jù)前人的室內(nèi)模型試驗和現(xiàn)場原位試驗成果,闡述影響微型樁群抗滑性能發(fā)揮的各種因素,如樁頂約束形式、樁身配筋方式、樁間距、錨固長度、土的含水率等,并從樁-土相互作用的角度總結(jié)微型樁側(cè)土壓力分布的機(jī)理,進(jìn)而確定樁身內(nèi)力,且根據(jù)剛度的不同歸納微型樁的受彎破壞和彎剪破壞的破壞形式;其次,介紹了微型樁群的抗剪強(qiáng)度法、彈性地基梁法、p-y曲線法等方法,指出其優(yōu)缺點(diǎn);最后,提出了目前微型樁群理論研究與試驗研究方法的不足,尤其在降雨條件下、地震等作用下的研究很少,并提出一些建議。
[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，

本文編號：2494600