查询词典 pile sheathing

PSO is a population-based optimization algorithm, which mimics the social behavior of animals in a flock. It makes use of individual and group memory to update each particle position allowing global and local search optimization. The objective function considered was the total weight of the structure subjected to stresses, displacements and forces constraints. The effects of the parameters were investigated as well and such combination of tuning parameters promote a better global search behavior avoiding premature convergence while rapidly converging to the optimal solution. Results showed the effectiveness of the proposed method by comparing with ANSYS Design Optimization Tool (zero-order method). The PSO with the tuning parameters makes it an ideal method for offshore wind turbines foundations optimization tasks.(2) A reliability analysis method for pile foundation bearing axial loads based PSOThe performance function of pile foundation's axially bearing capacity sometimes is nonlinear and complex, on the basis of geometric meaning of structural reliability index, an optimum model with PSO for structural reliability analysis under arbitrary random variables was established, The PSO algorithm is very efficient to solve global optimization problemsIts use in structural reliability field presents not only the advantage of its facility of implementation, but also the possibility to obtain the design point and the failure probability with a good accuracy. In addition, PSO is a zero order algorithm, for no derivative is necessary for its implementation.

本文的研究针对桩式海上风机基础结构的特点，在国内外有关研究成果的基础上对海上风机基础结构优化设计理论和可靠度方法一些相关问题进行了较为深入的研究，具体做了以下几个方面的工作：(1)基于粒子群优化的桩式海上风机基础确定性优化设计方法桩式海上风机基础的优化设计是一个复杂的、非线性约束的优化问题，针对传统的基于梯度信息的优化方法在处理非线性问题中易陷入局部最优解的问题，本文将一种耦合惩罚函数的PSO算法引入到海上风机基础结构概念设计中，PSO算法是从群体动物聚集觅食这一活动中受到启发而发展的，该算法利用个体和群体的信息共享不断改进自身的位置从而进行局部和全局最优搜索，本文中以桩和三脚架连接段直径及壁厚为设计变量，以基础总重量作为优化的目标函数，在给定的约束条件下建立了三脚架基础优化数学模型，另外本文还研究了PSO参数变化对结果的影响，协调的参数组合可以避免陷入早熟收敛而能够快速的获得全局的最优解，通过与ANSYS优化模块的计算结果比较验证了该方法的有效性，本方法为海上风机基础的确定性设计提供了一条有效的途径。

Through to the road grade separation circular route mathematical model's research, has based on this compiled the road grade separation circular route coordinate computational procedure; Each kind of curve linear on the one hand pile computation general formula's establishment, is advantageous in the programming solves on the other hand any curve the pile coordinate.

通过对公路立交匝道数学模型的研究，在此基础上编写了公路立交匝道坐标计算程序；各种曲线线形边桩计算通用公式的建立，有利于编程以解决任何曲线边桩坐标。

For the dado of the cast in pile pile with man made hole, a reliability model is set up based on the analysis of its bearing capacity; and a reliability design is carried out on the dado in the light of engineering example.

通过对人工挖孔桩护壁承受外界作用的分析，建立孔桩护壁的可靠度模型。结合工程实例，对孔桩护壁进行了可靠度设计，为目前孔桩护壁的设计提出一个合理的方法

At the same time, the quiet strength analysis to the pile foundation shows that the friction of the pile side is similar with the dead load test result.

同时对桩基进行了静力分析，桩侧摩阻的分布与静载试验的结果较相似。

It analyses the reasons of the declivity happen of one domestic,applies the anchor arm static press pile strengthening the basis,introduces the strengthen construction technology of anchor arm static press pile,adapts the parts cut-off pillar and jacking to correct a error,and practice illustrates that the methods has a good result,can be a reference to the other similar projects.

分析了某民房突然倾斜事故的原因，运用锚杆静压桩进行基础加固，对锚杆静压桩加固施工工艺进行了介绍，采用局部断柱顶升法进行纠偏，实践证明该法效果良好，以供其他类似工程参考借鉴。

A dynamic interaction schematic of an end bearing or elastic bearing pile with arbitrary force at pile top is founded. By using Helmholtz resolution and the operator decomposition method, Biots equations governing motions of a porous solid saturated with interstitial fluid are decoupled.

建立饱和土中端承桩和摩擦桩在任意激振力作用下的理论模型，利用位移势函数及微分算子分解方法，得到饱和土层Biot动力固结方程的分离变量解。

As a new type of pile based on multi-level bored piles, the squeezed branch disk pile has been marked economic and social benefits.

支盘桩是在多级钻扩桩技术的基础上发展而来的一种新桩型，具有显著的经济效益和社会效益。

Analyse the distributive law of shear-lag effect and influence of each structural parameter: pile length , bending stiffness of pile, bending stiffness of abutment, abutment length, different type of soil behind abutment, curve radius, width to span ratio,width of beam, etc. And the main influencing parameters were picked up.

进行结构参数分析，研究等代桩长、桩的纵向抗弯刚度、桥台纵向抗弯刚度、桥台高度、台后土压力、曲率半径、宽跨比及箱梁肋板间距等对剪滞系数的影响，从而得到影响无伸缩缝曲线箱梁桥剪力滞效应的主要参数和次要参数。

Finally, with this modeling and calculating method, influencing factors such as rate of piles length and diameter, the depth of rock-socketed, intensity of soils around piles, intensity of rock, intensity of pile, flaccidity layers and the depth of sediment at the end of pile were studied in detail.

最后，以这一方法为基础，对影响嵌岩灌注桩承载性状的长径比、嵌岩深度、桩周土强度、基岩强度、桩体强度、软弱夹层、以及沉渣等因素进行了详细地研究。

Based on engineering practice and experiment, considering the lateral interaction of the pile and soil between piles, the computation formula of bearing capacity of granular material pile is proposed.

在工程实践及实验基础上，提出了考虑桩与桩间土横向相互作用的散体材料桩复合地基的承载力计算公式。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。