查询词典 piles

Based on the pile driving logs, geological conditions on site and results of high-strain dynarnic pile-driving tests of the steel tubular piles driven in decomposed rocks, the effect of diesel and hydraulic hammers in driving these piles is analyzed.

本文根据风化岩地基施打钢管桩的打桩记录，地质条件，高应变动力检测成果进行比较，分析柴油锤和液压锤的使用效果，为在风化岩地基上施打大型钢管桩提供依据和设计施工参数。

Testing results of piles under low strain integrity are normally interpreted using one-dimensional stress wave theory. While one-dimensional stress wave theory is acceptable for pile-driving analysis the responses of piles integrity tests can not be adequately simulated when the hammer and the incident wave length are small in relation to the diameter of the pile.

基桩动测问题的理论基础一维应力波理论只有在锤径桩径比、波长桩径比、桩长桩径比足够大时才能近似成立，否则该问题实际上为应力波在柱体中传播的三维问题。

CThe overall design process as follows: According to the size and other data, combining the design result of pile and anchor, got the number of the piles along long margin, short margin and the overall number of piles, gave the furnished tables the anchor and the layout map of the pile, the profile and node map of the anchor.

c、整体设计过程如下：根据基坑的尺寸等一些原始资料，结合设计的桩径、桩长、桩中心距、配筋以及锚杆的设计结果得出了基坑长边、短边以及整体布桩数目，给出了锚杆设置情况统计表以及桩的平面布置图和锚杆的剖面图、节点图。

These problems include the selection of the pile styles, the application of the composition foundation of rigid piles with soft piles together, the computation of bearing capacity and settlement, the relation between the stress radio and bearing capacity, and the application of counter-construction using in composite foundation.

结合工程实践，在阐述刚性桩复合地基受力机理的基础上，对其设计中桩型的选择及其与柔性桩复合地基的综合应用、承载力与变形的计算、桩土应力比与复合地基承载力的关系以及逆作法施工桩基在复合地基施工中的应用等问题作了探讨。

Two groups of field tests on original soil and the soil among piles ,three groups of field tests on single pile ,one-pile and three-pile composite foundation have been conducted and the results of the bearing capacity ,as well as the elastic modula of each pile and composite foundation are obtained.It can be seen that soft earth reinforced by cement-soil piles seem to have better appearance in bearing and deforming than original one.

通过桩间土、原状土各两组，单桩，单桩与多桩复合地基各三组的现场静载荷对比试验，获得了各自的容许承载力值，根据P-S曲线计算出的变形模量结果表明，地基经过粉喷处理后，地基力学性质和变形特性得到明显改善，土层的强度和变形模量明显提高。

By use of 3-D FEM,the bearing capacity of jacking piles and uplift piles was simulated,and the conversion coefficient in self-balanced static test loading was studied.

采用三维有限元方法对桩顶压桩和桩底托桩承载特性分别进行模拟分析，研究了自平衡静载试验法中的转换系数。

According to the basic principle of self-balanced pile test method and the conversional simplified conversion method, the pile bearing capacity between the equivalent loaded piles and self-balanced piles were compared. The influence of negative skin friction on self-balanced pile test was studied. The conversion formulas of pile bearing capacity and settlement were derived.

根据自平衡测试法的基本原理，在传统简化转换法的基础上，通过等效受压桩和自平衡试桩上下桩段受力情况的对比分析，研究了负摩阻力对自平衡测试原理的影响，推得了桩承载力和位移的转换公式。

Single factor experiments were done with the factors including the width of protrusion and the trolley's velocity, which showed that the surface frictional coefficient decreases with the width of protrusion increasing, and doesn't change with the trolley's velocity changing, which was consistent with the results of the orthogonal experiment. A theoretical model of the horizontal projection of a corrugated bionic surface's contact area was built, which showed that the contact area's horizontal projection decreases with width and interval increasing respectively and that the ratio of the contact area's horizontal projection and the vertical load decreases with the vertical load increasing. It indicated that the surface frictional coefficient decreases with the above three factors increasing respectively. Finite element modeling and analysis of interactions of a plate and soils was done using ANSYS, which showed that the plate frictional coefficient is little relative to soil elastic modulus and decreases with vertical surface pressure and that trolley's pull and vertical displacement of bionic surface's control pilot keep constant almost during the plate being pulled. Finite element modeling and analysis of interactions of a corrugated bionic surface and soils was done using ANSYS, which showed that surface frictional coefficient is little relative to soil elastic modulus and decreases with bionic surface's structural parameters and vertical pressure increasing. However, the three factors all didn't affect the surface frictional coefficient remarkably on the condition of 90% dependability. For the first time, bionic surfaces were applied to screw piles, which formed bionic screw piles, and the contrast experiments showed the bionic screw pile had certain resistance-decreasing effects.

建立了波纹型仿生曲面与土壤的接触面积的水平投影的理论模型，表明接触面积的水平投影A随着波纹型仿生曲面突起宽度、两相邻突起间距的增大而减小，接触面积的水平投影与波纹型仿生曲面表面垂直载荷之比随着波纹型仿生曲面表面垂直载荷的增大而减小，进而得出仿生曲面摩擦系数随着波纹型仿生曲面突起宽度、两相邻突起间距以及表面垂直载荷的增大而减小；利用ANSYS软件对平板与土壤的相互作用进行了有限元建模与分析，表明平板摩擦系数与土壤弹性模量关系不大，而随着表面垂直载荷的增大而减小；平板牵引过程中台车牵引力和仿生曲面控制节点垂直方向位移基本保持不变；利用ANSYS软件对波纹型仿生曲面与土壤的相互作用进行了有限元建模与分析，表明波纹型仿生曲面系数在一定范围内基本不受土壤弹性模量的影响，随着波纹型仿生曲面突起宽度、两相邻突起间距以及表面垂直载荷的增大而减小，但在可信度为90％的前提下，三个因素影响都不显著；首次将波纹型仿生曲面应用于与土壤作用方式以挤压为主的螺旋桩，形成仿生螺旋桩，并与普通螺旋桩进行了沉桩对比试验，表明波纹型仿生曲面应用于螺旋桩桩体表面具有明显的降阻作用。

The water-bearing sand strata section from DK355+494 to DK355+517 of Xingwangmao tunnel has been successfully consolidated by horizontal jet grouting piles. The construction technology and construction method of consolidating sand strata by horizontal jet grouting piles are presented in the paper.

结合兴旺峁隧道改DK355+494～+517段含水砂层采用水平旋喷桩加固的成功实例，介绍水平旋喷桩加固砂层的施工工艺及方法；并对施工所需的人员、设备配制以及在施工过程中出现的&抢钻&、&断桩&与&短桩&的处理方法进行简单介绍。

Through the characteristics analysis of compound curves for road project , it was proposed that the complex line forms can be simplified to straight line, circular curve and complete transition curve, it was also proposed that the middle and side piles can be used to lay off the control piles of the road construction,and fx-4500P calculator can be used for programming of laying off calculation.

通过对道路工程复曲线特征分析，提出复杂线形可简化为直线、圆曲线和完全缓和曲线三种线形，以及道路工程施工控制桩可采用中、边桩的办法进行测设的两种观点，并用fx-4500P计算器编写测设计算程序。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。