文中还研究了粉煤灰桩的桩土应力比及桩身应力传递特性。
The stress ratio between pile and soil of the said pile and stress transmission property of pile are also discussed.
桩身应力应变测试是从微观上了解桩基工作性状的基本方法。
It is the basic method of understanding the performance behavior of big diameter driven cast-in-place pile by the test of stress and strain.
桩身应力最大点发生在桩顶下某点处，随着荷载的增加而向上移动。
At certain point under the pile the stress come to the maximum and it will move upwards along the pile with the load increasing.
然后对桩土应力、深层土压力、桩身应力应变和沉降测试结果进行分析对比。
Then the test results of the pile-soil stress, the deep soil pressure, stress and strain of the pile and sedimentation are analyzed.
通过在南京某高层公寓深基坑支护中的应用，并对其桩身应力、支护结构的侧向位移的实测研究，获得了混凝土芯水泥土搅拌桩支护结构在软土地区受力和变形的基本特征。
According to application of this structure in Nanjing deep excavation, the basic rules of concrete-core DCM pile retaining structure in stress and deformation in the soft soil area were obtained.
本文介绍了应力波反射法中所使用的频域分析在判断桩身质量完整性中的优点与不足。
In this paper, we introduced the merit and shortage of the frequency analysis determining the integrality of stake - boby quantity using the reflect method of stress wave.
结果表明桩身轴向应力随深度增加呈递减趋势； 粉喷桩复合地基的有效桩长受桩土模量比与置换率的影响。
The result shows that axial stress of Pile takes on degression along with deepness and the effective length of Pile is influenced by replacement-ratio.
应力波反射法在检测基桩质量的应用上存在着方法上的局限，且桩身缺陷的方向性对检测结果影响极大。
The stress - wave reflection method exist limitation in testing the quality of foundation pile. The direction of defects in pile body exerts a tremendous influence on testing results.
分析了动力试桩中，因土阻力和桩身材料阻尼引起的应力波衰减作用对桩身的完整性检测精度的影响。
It also analyses the influence of attenuation of stress wave cased by the soil resistance and the damp of pile shaft material in dynamic pile test on the precision of pile shaft integrity test.
研究了褥垫层厚度变化对桩身轴力传递、桩侧摩阻力分布、桩端阻力发挥、桩土荷载分担及桩土应力比的影响。
Axial force transmission, distribution of skin friction, tip resistance of pile, as well as tress ratio between pile and soil are changing with pillow.
建立桩身单元的位移应力方程时，采用压缩杆理论；建立土体界面单元方程时，采用层状材料基本解。
Because of using the fundamental solutions of layered elastic solids, the proposed method can be used for analysis of the pile-foundation interaction in non-homogeneous soil.
同时，分析了桩身驰豫时间、桩侧土的等效粘滞阻尼系数、桩底土的单位刚度等因素对应力波的影响。
The study also goes to the influence, upon stress waves, of the piles relaxation time, the equivalent viscous damping coefficient of soil around the pile and the unit rigidity of soil below the pile.
切向冻胀力在桩身缺陷处，会产生应力集中，使桩身破坏。
The tangent frost heaving stress will generate stress concentration at the pile defects, thus damaging the pile body.
为此采用广角度监测技术，跟踪观测钢护筒、桩身钢筋和混凝土的应力响应。
Therefore, extensive angle monitoring is adopted to observe the structure response of steel casing, reinforcing steel bar and concrete.
从挤土效应及振动影响、浅层障碍、斜桩、桩身破坏等方面总结了静压预应力管桩施工中的常见问题，并分析了产生的原因，介绍了预防措施，以提高桩的合格率。
What's more, bearing capacities of partially inclined piles, inclined pile-groups and partially inclined piles due to pit excavation are also studied based on the parameters from the back analysis.
从挤土效应及振动影响、浅层障碍、斜桩、桩身破坏等方面总结了静压预应力管桩施工中的常见问题，并分析了产生的原因，介绍了预防措施，以提高桩的合格率。
What's more, bearing capacities of partially inclined piles, inclined pile-groups and partially inclined piles due to pit excavation are also studied based on the parameters from the back analysis.
应用推荐