土骨架的新概念与泥炭土及纤维加筋土的结构  

New Concept of Soil Skeleton and Structure of Peat and Fiber Reinforced Soil

作　　者：蒙理明 张风 MENG Li-ming;ZHANG Feng(Hainan Vocational University of Science and Technology ,Haikou 571126,China)

机构地区：[1]海南科技职业大学,海口571126

出　　处：《建材世界》2021年第4期37-42,共6页The World of Building Materials

摘　　要：用土骨架的新概念,对泥炭土及纤维加筋土(简称纤维土)的结构进行分析。提出了纤维土有六相。提出了抗剪极限状态纤维土有效应力的大气张力公式。将土骨架理论扩展到纤维土,包括土骨架的4要素、构成类型、溃散、体积。土骨架的其他理论仍然适用于纤维土,包括土骨架的损伤、修复、增强等等。抗剪强度由土骨架的接触与联接给出。提出了纤维土的大气张力库伦抗剪强度公式。其中,初始抗剪强度有三项:真粘聚力、联接的摩擦抗剪强度贡献、水气不抵大气压强自重应力抗剪强度贡献。提出土颗粒或子土骨架漂浮的概念。普通土是纤维土的特例。Based on the new concept of soil skeleton,the structure of peat soil and fiber reinforced soil(fibrous soil for short)is analyzed.It is suggested that fibrous soil has six phases.The atmospheric tension formula for effective stress of fibrous soil in shear limit state is proposed.The theory of soil skeleton is extended to fibrous soil,including four elements of soil skeleton,composition type,collapse and volume.Other theories of soil skeleton are still applicable to fibrous soil,including damage,repair and reinforcement of soil skeleton.The shear strength is given by the contact and connection of the soil skeleton.The Coulomb shear strength formula of atmospheric tension for fibrous soil is proposed.Among them,there are three initial shear strength:true cohesion,the contribution of friction shear strength of connection,and the shear strength contribution of water and gas not to atmospheric pressure dead weight stress.The floating concept of soil particles or son of the soil skeleton is put forward.Common soil is a special case of fibrous soil.

关 键 词：纤维土 土骨架的接触与联接 大气张力公式 有效应力 初始抗剪强度 漂浮 

分 类 号：G63[文化科学—教育学]