论文部分内容阅读
本文系统地阐述了用土工试验方法研究软弱层带的工程性质。包括:软弱泥化带的特征,泥化带的形成,物理状态,在常规与非常规条件下的抗剪强度,应力应变特性。软弱层带是一种介于岩石与土层间的介质,有明显的分带性,曾受过先期剪切。在常规条件下,各带的剪切特性不同;经多次重复剪切后,出现剪切“固化”;地震作用下的强度高于静力作用强度。某些泥化带的残余强度与应力水平有关。室内试验成果与现场大型试验成果接近,因而可用室内中小型试件的试验成果,部分代替现场试验成果。
This paper systematically describes the engineering properties of soft zone with geotechnical test methods. Including: characteristics of weak argillic zone, formation of argillic zone, physical state, shear strength under normal and unconventional conditions, and stress-strain characteristics. The weak zone is a medium between rocks and soil layers. It has obvious zonality and was previously sheared. Under normal conditions, the shear characteristics of the bands are different; after repeated shearing, shear “curing” occurs; the strength under the action of the earthquake is higher than the static strength. The residual strength of some argillized belts is related to stress levels. The indoor test results are close to the large-scale test results on the site. Therefore, the test results of indoor small and medium-sized test pieces can be used to partially replace the field test results.