CAJ | 학술논문

首次将岩土体荷载与位移特征曲线划分为3种类型,并定义高地应力的判别标准.提出一种新的本构理论,可以描述在不同正压力(或不同围压)下应力(或荷载)与应变(或位移)的全过程特征,只有3个描述材料结构和状态的力学参数.该理论不仅可以描述单个材料,也可以描述多种材料组成的复合材料和两种不同材料界面等力学特性,变形可达任意值.对于长沙湾特大桥基桩,在不同静载荷作用下不同土体与桩之间的力学特性采用新本构理论进行数值模拟,结果表明该本构理论可以描述不同岩土体和岩土体与基桩之间的力学特性.
수차장암토체하재여위이특정곡선화분위3충류형,병정의고지응력적판별표준.제출일충신적본구이론,가이묘술재불동정압력(혹불동위압)하응력(혹하재)여응변(혹위이)적전과정특정,지유3개묘술재료결구화상태적역학삼수.해이론불부가이묘술단개재료,야가이묘술다충재료조성적복합재료화량충불동재료계면등역학특성,변형가체임의치.대우장사만특대교기장,재불동정재하작용하불동토체여장지간적역학특성채용신본구이론진행수치모의,결과표명해본구이론가이묘술불동암토체화암토체여기장지간적역학특성.
The classification as three types is proposed for the load-displacement relation curve of the rock-soil mass at first; a criterion of high earth pressure is defined. A new constitutive theory is at first proposed;the complete-process relation of stress-strain can be described under different normal stresses (or different confining pressures) by this theory. There only exist three mechanical parameters describing the geomaterial and stress state. It describes not only the mechanical behavior of geomaterial, but also of the complex material and of the surface between different media, the arbitrary deformation can be obtained. The relationship of stress-strain for the different rock-soil masses and the surface between rock-soil layer and pile are described by the proposed constitutive theory. The testing data of pile foundation of Changshawan bridge are simulated;the results show:that the mechanical properties of different rock-soil masses and interlayer between rock-soil mass and pile can be presented by this constitutive theory.