土钉支护强度比与类粘聚力关系试验研究  

On Experiment of Relationship between Soil Nailing Supporting Strength and Cohesive Force

作　　者：喻晓今[1] 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013

出　　处：《华东交通大学学报》2012年第1期6-9,共4页Journal of East China Jiaotong University

基　　金：江西省教育厅科技项目(GJJ08262)

摘　　要：求解边坡土体的强度稳定性等问题的理论基础主要源于如朗肯、库伦土压力理论、屈斯卡、米泽斯、莫尔-库仑理论、塑性力学的极限理论等等,随土体条件的变化,一些理论又进行修正和演绎以得到对问题的更接近或更为准确的解释。鉴于此,对边坡基坑工程稳定性研究借用相应的描述参数,提出类内聚力、类破裂角等参量,寻找土钉支护的强度比与大主应力、类粘聚力、类破裂角的关系,以试验数据得到了一定土体在土钉支护下变量之间的回归公式,可以作土钉支护工程对滑裂面的预估。The solutions of the strength and the stability of a slope are based on the theory of Rankine earth pressure,the theory of Coulomb earth pressure,Tresca,Mises,Mohr-Coulomb criterion,the theory of Limit equilibrium and so on.Some theories are revised and deduced to approach the real values of some parameters with the changing conditions of the soil.As for research of the stability of slope and pit,the corresponding parameters are borrowed to present the references of the likeness of cohesion and fracture angle,to find the relation between strength of soil nailing and the big principal stress,the likeness of cohesion and the likeness of fracture angle.The regression formula between soil nailing variables is obtained through the experimental data,which can be used to estimate slipping fracture of soil nailing support of the project.

关 键 词：边坡基坑 土压力 土体试验 土钉支护 稳定性 强度 

分 类 号：TU43[建筑科学—岩土工程] TU470.3[建筑科学—土工工程]