查询词典 pile hammer

Based on practical cases and axial stress test of the long-short pile foundation of the same pile caps in the soft clay area, the deformation character of the long-short pile foundation and whole-long pile foundation under the geological condition which the strength of upperstratum is higher than the understratum when two or more layers are appeared in the soft clay area is analysed. Analysis also shows that both settlement and cost of the long-short pile foundation are less than those of the long pile foundation in this kind of ground.

摘要］通过工程实例和对同一承台下长短桩各断面的轴力量测，研究我国沿海城市具有两个或多个较硬的持力层的软土地区，当上持力层变形模量大于下持力层时，长短桩桩基与长桩桩基的变形性状机理，得出在该类地基中，长短桩桩基的沉降小于长桩桩基，且工程造价更低。

Our company has successfully manufactured SDS-plus round shank electrical hammer drills,SDS-plus square shank electrical hammer drills,SDS-max round shank electric hammer drills,long hexagonal shank electric hammer drills series,short hexagonal shank electric hammer drills series and all kinds of steel chisels series products.

公司现已成功研制开发出四坑圆柄、四坑方柄、五坑圆柄，长、短六角柄电锤钻系列及各种规格型号的钢凿子系列产品。

The research of the utility and safety of the hammer was performed. The affecting factors of pile-soil system to the results of dynamic load testing were also analyzed. The results show that there is no tensile force in hammer during impact and it is feasible to utilize the hammer in drilling piles dynamic testing. Drop height, stiffness of cushion, pile length and diameter, and the soil qualities etc. affect the dynamic load testing results considerably.

研究结果表明：锤体冲击过程中基本不受拉力，符合试验要求；特大型组合式基桩高应变动力试桩重锤应用于灌注桩承载力检测是可行的；锤重、落距、桩径、桩长、土阻力分布、桩侧及桩端土弹限、锤垫刚度和力脉冲宽度等因素对检测承载力均有较大影响。

This paper summarizes the selection of key calculate parameters for example: anti - slide pile thrust, anti - slide pile position, pile spacing, pile anchor length, anchor cable pre - stressed value and so on are optimized after comparing the different calculation method, and stabilizing pile design frame process are described from scheme optimization till component design combine with the applications of slide slop protection engineering in Great Wall Coal Mine.

本文结合长城矿边坡加固工程，通过比较不同设计方法总结了关键计算参数，如：抗滑桩桩后推力，抗滑桩位置，桩间距，桩身锚固长度，锚索预应力值等的优化选取，编制了抗滑桩工程从方案优化至单个构件的完整计算步骤和设计框架流程，为同类预应力锚索抗滑桩工程设计提供了可靠的实用设计方法。

Based on the static balance among the pile and soil, the basic differential equations of the displacements of the pile and soil were deduced. Considering the compatibility condition of stress and strain , based on the vertical deformation of pile and pile-surrounding soil, the analytical formulas calculating the pile friction were drew.

本文通过建立复合地基中桩体和桩周土的基本微分方程，考虑应力协调条件，假设桩周土的位移模式，在此基础上推导出桩侧摩阻力和桩身轴力的解析式，并进一步研究相关影响因素。

Accord-ing to engineering example,the load condition of pulling resistance pile design,pile capacity design of floatage resistance pile,pile body texture design of floatage resistance pile,monolithic stability of grouped piles foundation,floatage resistance per unit area,c...

依据工程实例对抗拔桩设计荷载条件、抗浮桩单桩承载力设计、抗浮桩桩身结构设计、群桩地基整体稳定性、单位面积抗浮力、抗拔桩抗裂分别进行了阐述，以及抗拔桩设计中应考虑的问题进行了论述。

The influence of the depth of diaphragm wall-pile cap, the soil properties at pile tip, the distance between diaphragm wall and pile, and the size of pile on the deformation and load transfer of diaphragm wall-pile system are investigated.

并分析了墙桩顶部承台厚度、桩持力层、墙桩净距以及桩截面积等的变化对墙桩荷载分担以及整体变形的影响。

Using linear elastic finite element model for piles and pile cap, elastic-plastic finite element model for piles-surrounding soil under pile cap, linear elastic infinite element model for soil around pile group, and mounting interface element on the pile-soil interfaces, 3-D elastic-plastic finite element method is used to analyzing the pile-soil-cap interaction.

对桩及承台采用线弹性有限元模型，对承台下桩周土采用弹塑性有限元模型，对群桩以外的土体采用线弹性无限元模型，在桩土接触面上设置接触面单元，利用三维弹塑性有限元对桩%D土%D承台相互作用进行了分析。

Based on the load transmission mechanism of space truss, and referenced theanalysis of test materials, a formula for calculating the bearing capacity of reinforcedconcrete compression strut is introduced. By using the theory of plastic hinge-line, anupper limit solution of bent bearing capacity for four-pile cap, which coincidesprecisely with the practical measurements, is obtained. By utilizing the reaction ofthe soil under cap and by basing on the method of plastic ultimate analysis, an upperlimit solution of punching shear bearing capacity for pile cap is acquired, which. coincides precisely with the practical measurements, and the formula is similar to thecode.A brief discuss on cooperative work of strip beam of foundation and single rankof piles is made. Separately considering the pile-cap and the pile-group, thencoupling their matrix of rigidity, the inner force of pile-cap is solved by the numericalmethod under some reasonable supposition. In comparison with other method, thecalculating results are exact, reliable and convenient in using. The method provides apowerful tQol fOr further analysis and research on this kind of structure.

本文以空间桁架传力机理为基础，结合试验资料分析，推导了钢筋混凝土等边三桩承台受冲切承载力计算公式；根据塑性铰线理论，导得了与试验结果吻合良好的四桩承台受弯承载力的上限解；利用承台底土反力分布，根据塑性极限分析方法，导得了桩基承台受冲切承载力的上限解，在此基础上，通过简化假定，得到与规范公式相类似的承台受冲切承载力实用公式，该公式能方便考虑台底土反力作用，与试验结果的吻合程度比规范公式好；简要讨论了桩基条形承台梁与单排桩的协同工作分析；在一些合理假定的基础上，将承台与群桩分开考虑，分别得到其刚度矩阵后进行耦合，通过数值方法求解承台内力，算例表明，该方法结果准确，使用方便，为该类结构的进一步分析研究及工程设计提供了强有力的工具。

Causes of breakage of tube pile and practical study on rectification-joining method;2. An application of sinking Pile of dilling to lead the hole in solving the broken pile of the tube pile ;3. Due to the difficulty of construction quality control,application of tube pile foundation has been restricted in limestone zone.

在灰岩等特殊地质中，因施工质量控制难度大，管桩基础的应用受到限制，可在设计和施工中采用静压管桩，并准许有一定比例的断桩，以及控制终压压力、改变承载力取值模式等方法，达到预防断桩、降低断桩率的目的。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48