| 1. | Analytical solutions for lateral vibration of pile in layered soils considering shear deformation 成层土中粘弹性桩纵向振动分析及工程应用 |
| 2. | Analysis and application in engineering on vertical vibration of viscoelasticity piles in layered soil 成层土中粘弹性变截面桩纵向振动分析及应用 |
| 3. | Based on these solutions , the dynamic responses of integral pile and pile with various impedances are investigated 基于所得解,对饱和成层土中的完整桩及各类变阻抗桩的振动特性进行了分析。 |
| 4. | 2 . longitudinal vibration of pile with variable impedance ( variable sections or modulus ) in layered soil undergoing arbitrary load is theoretically investigated 2 、对成层土中变阻抗(变模量或变截面)桩在任意激振力作用下的纵向振动特性进行了研究。 |
| 5. | ( 4 ) from computing the safety coefficient of homogeneous and heterosphere slopes , we can get useful conclusion that the safety coefficient change in the course of precipitation duration ( 4 )通过计算相同降雨条件对均质边坡和成层土边坡稳定的影响,得出安全系数随降雨持时变化的曲线以及一些有益的结论。 |
| 6. | The main original work includes : 1 . with laplace transformation , the solution for longitudinal vibration of a pile with variable cross - section is derived when surrounding soil is simulated respectively with normal voigt model and normal maxwell model 主要工作包括: 1 、采用拉氏变换法分别得到了标准voigt模型和标准maxwell模型条件下成层土中任意段变截面桩纵向振动解。 |
| 7. | In this paper it is theoretically studied that how to realize the quantitative analysis of defective piles in heterogeneous soil . and a program has been compiled according to the expression of quantitative analysis , by which the degree of integrity can be calculated 本文从理论上研究了如何实现成层土中基桩完整性的量化分析,提出了量化分析公式,并根据量化公式编制了缺陷计算程序,最后对模型桩试验进行了分析验证。 |
| 8. | With the consideration of the vertical wave effect of soil and soil - pile interaction , an approximate analytical solution to vertical vibration of pile system with variable impedance in visco - elastic layered soil is developed . a simplified and practical mathematical model for interaction between soil layers is proposed , and its applicability is theoretically investigated . based on this model and by using laplace transforms and the transmit property of impedance function , the analytical expression of the impedance function and solutions of the displacement and velocity response function in frequency domain and in time domain at the pile head are derived 4 、从三维轴对称土模型出发,对考虑桩土耦合作用、土层层间联系以及桩周土竖向应力梯度变化条件下的成层粘弹性土中完整桩及变阻抗桩系统纵向振动问题进行了研究,提出了成层土中变阻抗桩系统纵向振动问题的近似解析解法和桩周土层层间相互作用的简化而实用的数学模型,并利用拉氏变换和阻抗函数的传递性,获得了成层土中任意段变阻抗桩桩顶阻抗函数的解析表达式,以及桩顶速度导纳和时域速度响应解析解和半解析解。 |
| 9. | 5 . based on the solutions developed herein , the main features of the interaction between visco - elastic layered soil and an integral pile or a multi - defective pile are systematically analyzed . the influence on the vibration properties caused by soil modulus , the degree of pile defects , and the length and location of the defects are discussed , and many important conclusions are drawn 5 、利用所得解,对成层土中完整桩、变截面、变模量桩的振动特性进行了较系统的分析,并重点讨论了土层模量、桩身缺陷程度、埋身、缺陷段长度、激振频率等对桩项复刚度、桩顶反射波曲线、导纳曲线的影响,得到了许多重要结论。 |
| 10. | Based on the solutions proposed herein , the longitudinal vibration properties of an integral pile in a uniform soil or layered soil , a pile with variable sections or variable modulus in a uniform soil are discussed respectively . the influence on the curves of complex stiffness , mobility and reflection wave of pile caused by soil modulus , the degree of pile defects , and the length and location of pile defects are emphatically discussed . 3 利用所得解分别对均质土中完整桩、成层土中完整桩、均质土中变截面桩和均质土中变模量桩的纵向振动特性进行了分析,重点讨论了土层模量变化、桩身缺陷程度、缺陷段位置、缺陷段长度等因素对桩顶复刚度、速度导纳和反射波曲线的影响。 |