| 1. | Loading test results indicate that the bottom resistance increases by about 100 % after grouting in the pile bottom , and the bearing capacity of the rigid pile increases by about 35 %
实测结果表明，桩底后注浆处理后，持力层的端阻力提高约100 % ，刚性桩复合地基承载力提高约35 % 。 |
| 2. | A new method with assumption is proposed to study a special space ax - symmetrical plasticity problem , which aims at determining the bearing capacity of ax - symmetrical single pile bottom in composite foundation
就粉喷桩加固路基的特点，根据力学原理，分析桩土应力比问题，获得一些有益的结论。 |
| 3. | ( 5 ) the monitoring results of horizontal displacement along the pile in length indicate that pile bottom is not a fixed end as assumed . displacement also occurs on the pile bottom . assuming pile bottom as a elastic support will be more correct
( 5 )由桩身沿深度的水平位移监测结果可以看出，围护桩桩底并未如通常所假设的那样为固定端，在其底端也有位移，围护桩底端假设为弹性支座才更符合实际情况。 |
| 4. | This paper describes the principle and method for testing pile bottom force - hearing layer and pile body force - bearing declivity , deals with results of standard component test and inclined model pile test under the condition of inclination , and also gives some practical examples of engineeing application
摘要阐述了桩底持力层与桩身倾斜度测试原理及方法，列举了倾斜情况下的标准件试验及倾斜模型桩试验结果与工程应用实例。 |
| 5. | In view of load transferring capability of rock - socketed piles , this paper compares rock - socketed piles with non - rock - socketed piles , analyzes influencing factors ( pilelengtru pile diameter pilemodulusx character of bearing stratuiru mud hull sediment of pile bottom and roughness ) on force character . with different load transferring functions , a set of analytical equation for single pile settlement calculation of rock - socketed piles are established : three stages of p - s curve from analytical equation are gained which are straight linex curve x straight line ; and relationship curves in different pile modulus and in different rock - socketed length
根据所选用的不同的荷载传递函数，导出了嵌岩桩单桩沉降计算的一种解析算法，分析得出嵌岩桩p ? s曲线按荷载变化分为直线?曲线?直线段三个阶段，不同桩身模量下承载力的变化曲线，桩身模量、桩端岩石强度是影响单桩承载力的重要因素，不同嵌岩深度下端阻比的变化曲线。 |
| 6. | The two models of rigid and elastic piles have been discussed respectively , in which the anchor cable will be regarded as an elastic hinge . under the consideration of deformation harmony of anchor cable with piles bodies and pile bottom conditions , the solutions of the internal forces distribution along piles bodies are presented
本文分别按刚性桩和弹性桩两种物理模式，将锚索视为弹性绞支座，利用抗滑桩和锚索位移变形协调条件，计算出不同桩底条件下抗滑桩的内力分布。 |
| 7. | Method to evaluate pile capacity precisely by using the coefficient of cleaning slime and coefficient of construction process and by controlling the total duration of construction is proposed herein after analyzing the influences of slime at pile bottom , thickness of mudcake by the side of pile , shape of hole wall , time of construction and construction process on the bearing capacity of large diameter cast - in - place pile
本文通过分析桩底沉渣、桩侧泥皮厚度、孔壁形状、成桩时间及施工工艺等对大口径灌注桩承载力的影响，提出了在桩承载力计算中引入清底系数及成桩工艺系数，并控制成桩总时间以较准确地评价单桩承载力的方法。 |
| 8. | The 16 - node degenerated iso - parametric element is proposed for the analysis of raft foundation with mid - thick plate . the stiffness matrix of single pile among the pile group can be founded assuming the total contact between the plate and the foundation . and the results of stress and deformation of plate , the force on pile and the settlement of pile bottom can be solved after the finite element disperse for the plate and the establishment of balance equation of pile - raft interaction
在引入16节点退化等参元的中厚板筏板分析模型的基础了，假定筏板与地基间完全接触，建立了群桩中单桩桩身刚度矩阵，继而对筏板进行有限元离散得到桩筏共同作用的平衡方程，从而求解筏板内力、挠度、桩顶反力、桩端沉降等一系列结果。 |
| 9. | 2 . the complex stiffness corresponding to three bearing conditions of semi - infinite elastic subgrade , finite elastic soil layer and end bearing at the pile bottom are theoretically investigated , and analytical expression of the complex stiffness corresponding to finite elastic soil layer bearing condition is obtained . the special influence of bearing conditions on dynamic response at pile head is then discussed
2 、对刚性支承、有限厚度土层支承和半无限空间支承三种桩底部支承情况下桩底支承复刚度和桩周土底分布支承复刚度的解析表达及其特性进行了推导论证，通过假定桩底土为与桩等截面的土柱推导求得有限厚土层支承条件下桩底支承复刚度的解析解，并据此分析了不同底部支承边界对桩顶响应的影响。 |
