1) expansion of round hole
园孔扩张
1.
The process of pile pressing of static pressure pile is simulated as expansion of round hole.
本文将静压桩的压桩过程模拟为园孔扩张课题，根据土塑性力学园孔扩张理论分析提出了压桩时塑性区影响范围和扩张压力的估算公式，并相应分析提出压桩时土体水平和竖向位移估算公
2) cavity expansion
圆孔扩张
1.
According to Mohr-Coulomb failure criteriont,he stress-strain-volume change relationshipst,he volume balance and energy conservation equations,and the rules of large deformation and non-associated flow under high stresses,the limit bearing capacities of cavity expansion are given considering the large deformation and dilation with volumetric change and large deformation,respectively.
根据圆孔扩张过程中塑性区土体在孔扩压力作用下的应力–应变–体变关系、扩孔过程中的能量守恒原理、非相关联流动准则以及莫尔–库仑破坏准则,分别给出考虑体变守恒和大变形规律2种条件下砂性土圆孔扩张问题的极限扩孔压力计算公式。
2.
The stress distribution due to the cavity expansion is considered as three zones, the first is failure zone, the second is plastic zone and the third is elastic zone.
将土体在圆孔扩张过程中的应力分布分为三个区域,基于修正剑桥模型,推导了圆孔扩张过程中土体在三个区域的超孔隙水压力的解析表达式,对比分析了固结比对土体中应力分布的影响。
3.
In this paper,the stress distribution due to the cavity expansion is considered as three zones,the first is failure zone,the second is plastic zone and the third is elastic zone.
将土体在圆孔扩张过程中的应力分布分为三个区域,基于修正剑桥模型推导了圆孔扩张过程中土体在三个区域的超孔隙水压力的解析表达式。
4) expansion of cavity
小孔扩张
1.
In view of the vertical subsidiary stress and the theory of expansion of cavity,this paper exams the stress between the anchor jacked pile and the soil around it,and the properties of the soil as well.
桩周土体在压桩过程中的问题被视作三维问题,考虑竖向附加应力的作用以小孔扩张理论为基础,对锚杆静压桩压桩过程中桩土的相互作用以及压桩后桩周土性状进行分析,得出后桩周土压力及土体的塑性半径。
5) cylindrical cavity expansion
圆孔扩张
1.
place tubular piles are analytically analyzed by making use of cylindrical cavity expansion theory,and by comparison with general piles,its superiorities in respect of disturbing soils are displayed.
应用圆孔扩张理论 ,分析了筒桩施工挤土效应 ,并通过比较 ,得出筒桩施工挤土效应远远小于普通沉管灌注桩或预制实心桩 ;筒桩可内外承担摩阻力 ,承载力高 ,挤土效应小 ,是一种比较理想和值得推广的桩型。
6) spherical cavity expansion
球孔扩张
1.
A spherical cavity expansion-sliding friction calculation model on penetration of pressed-in piles;
静压桩贯入地基的球孔扩张-滑动摩擦计算模式
2.
Computational simulation of jacking force based on spherical cavity expansion theory and friction fatigue effect
基于球孔扩张理论和侧阻力退化效应的压桩力计算模拟
3.
Based on the model of spherical cavity expansion,this paper introduces octahedron stress and Mohr-coloumb strength envelope curve.
以球孔扩张模型为基础,引入八面体应力和曲线型Mohr-coloumb强度包线,利用能量平衡原理和体变平衡原理建立方程组,来分析密砂中深基础的基底极限承载力;并将本文理论与其他理论和实际应用进行比较,表明本文理论更符合实际情况。
补充资料：极大扩张和极小扩张
极大扩张和极小扩张
maximal and minimal extensions
极大扩张和极小扩张匡.习的司出目.公油抽lex妇心.旧;MaKcl.Ma刀‘.oe H Mll.”M田.妇oe PaC山一Pe皿朋] 一个对称算子(s笋nr贺苗c opemtor)A的极大扩张和极小扩张分别是算子牙(A的闭包，(见闭算子(cfo“月。详mtor”)和A’(A的伴随，见伴随算子(呐。int opera.tor)).A的所有闭对称扩张都出现在它们之间.极大扩张和极小扩张相等等价于A的自伴性(见自伴算子(义休.adjoint operator))，并且是自伴扩张唯一性的必要和充分条件.A.H.J’Ior朋oB，B.c.lll户、MaR撰
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参考词条