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concrete pier     
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  混凝土桥墩
     Numerical Analysis of Hydrated Heat Temperature Field of Massive Volume Concrete Pier
     大体积混凝土桥墩水化热温度场的数值分析
短句来源
     Study on the Surface Quality of Concrete Pier and Abutment
     混凝土桥墩(台)表面质量研究
短句来源
     Research on Structural Analysis Method of Solid Concrete Pier Strengthening
     实体式混凝土桥墩裂缝成因分析及加固方法研究
短句来源
     EXPERIMENTAL RESEARCH ON IMPROVING SURFACE QUALITY OF CONCRETE PIER
     改善混凝土桥墩表面质量试验研究
短句来源
     The Temperature Crack Control of Mass Concrete Pier Base
     大体积混凝土桥墩基础的温度裂缝控制
短句来源
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  混凝土墩柱
     Elastic Solution of Concrete Pier Thermal Stress and Parameters Strengthened by Carbon Fiber Sheet
     CFS加固混凝土墩柱温度自应力弹性解及影响参数研究
短句来源
     Study on Temperature Self-restrained Stress and Parameters of the Concrete Pier Column Strengthened by CFRP
     CFRP加固混凝土墩柱温度自应力及参数研究
短句来源
  混凝土台身
     Causes analysis for temperature shrinkage crack of concrete pier and its control measures
     混凝土台身温度收缩裂纹原因分析及控制措施
短句来源
  混凝土墩
     Concrete pier board construction
     混凝土墩台施工
短句来源
     Elastic Solution of Concrete Pier Thermal Stress and Parameters Strengthened by Carbon Fiber Sheet
     CFS加固混凝土墩柱温度自应力弹性解及影响参数研究
短句来源
     Study on Temperature Self-restrained Stress and Parameters of the Concrete Pier Column Strengthened by CFRP
     CFRP加固混凝土墩柱温度自应力及参数研究
短句来源
     Causes and Treatments for Concrete Pier Base Crack
     混凝土墩台裂缝成因与处理
短句来源
     The paper discusses variety of causes for concrete pier base cracks and puts forward solving methods for maintenance and reinforcement.
     论述了混凝土墩台裂缝的各种成因 ,并提出了维修加固的方法。
短句来源

 

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      concrete pier
    The primary cause of failure was scour beneath a plain concrete pier footing.
          
    The pier diaphragms were full girder depth except for those diaphragms that straddle over the concrete pier knuckle.
          
    The instruments are contained in an aluminum pressure tank set on a concrete pier, in a vault located in a 6 m-long east-west adit.
          
    One common way to provide for replacement is to use a masonry plate, attached to the concrete pier head by embedded anchors or anchor bolts.
          
    Here you find still operating, a 70 year old 2.2 km long concrete pier leading out into the Gulf of Mexico.
          
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    In this paper, an analysis method in consideration of the nonlinearity of materials and geometry for gravity concrete piers in railway bridges is studied. The Axial force-Moment-Curva-ture relationships of the cross sections are calculated and the full range of load-displacement curves of the piers subjected to transverse force are also calculated. Based on adequate constitutive relations and proper analysis models, this analysis method can be used to simulate the full range, from loading, cracking...

    In this paper, an analysis method in consideration of the nonlinearity of materials and geometry for gravity concrete piers in railway bridges is studied. The Axial force-Moment-Curva-ture relationships of the cross sections are calculated and the full range of load-displacement curves of the piers subjected to transverse force are also calculated. Based on adequate constitutive relations and proper analysis models, this analysis method can be used to simulate the full range, from loading, cracking to crashing, and it provides an efficient means of theoretic analysis in studying the problems of ultimate loads, ultimate deformation and nonlinear design method for bridge piers.

    本文针对单线铁路混凝土重力式桥墩,研究了考虑材料非线性和几何非线性的分析方法。用编制的计算程序,计算了截面轴力-弯矩-曲率关系,并进行了桥墩在承受逐渐变化的侧向力作用下荷载-位移的全过程分析,在使用合理的本构关系和计算模型的基础上,用本文研究的方法对桥墩进行非线性分析,可以模拟桥墩从开始受荷、开裂直至破坏的全过程。为研究桥墩的极限承载能力和极限变形能力,以及考虑非线性性态的设计方法提供了理论分析手段。

    In the theme, the deformation and energy double damage index is used on concrete pier structures and the potentiality of evaluation pier structures damage degree have been discussed. When considered the axis force effect, the elastic-plastic bar element stiffness matrix is deduced. A computer program is develeped with direct integration, so as to calculate the value of the double damage index and a number of seismic respondences of the structure. The calculation result proves it is reasonable that...

    In the theme, the deformation and energy double damage index is used on concrete pier structures and the potentiality of evaluation pier structures damage degree have been discussed. When considered the axis force effect, the elastic-plastic bar element stiffness matrix is deduced. A computer program is develeped with direct integration, so as to calculate the value of the double damage index and a number of seismic respondences of the structure. The calculation result proves it is reasonable that this damage index is utilized on pier structures by comparing with practice result. It is significant for strengthening old bridges and repairing bridges damaged.

    本文将变形与能量双重破坏指标应用到混凝土桥墩结构中,从中探讨用双重破坏指标评定桥墩在地震力作用下损坏程度的可行性。并推导了考虑轴力作用时,结构的力学模型用Clough模型的塑性杆单元刚度矩阵,同时应用直接积分法编制了相应的电算程序,以计算双重破坏指标值及结构的一系列地震反应量。通过计算结果与实验结果的比较分析,证明将该破坏指标应用到桥墩结构中是适宜的。这对旧桥加固及桥梁震后修复有重要意义。

    By the preetressed anchorage test on prestressed concrete pier used for a 1 : 1 seale mOdlingpodeetal in Ankang Hydropower station, the stressing value Pd and the average stressing value P of asinglesteel line in the anchor lines are determined. The ration of Pd to P is defined as the stressing uniformity coefficient of one steel line. Through com prehensive analysis of test data, the variation of P(reading of preaure metre on tensile jack)with the uniformity coefficient can be deseribed by thefunctional...

    By the preetressed anchorage test on prestressed concrete pier used for a 1 : 1 seale mOdlingpodeetal in Ankang Hydropower station, the stressing value Pd and the average stressing value P of asinglesteel line in the anchor lines are determined. The ration of Pd to P is defined as the stressing uniformity coefficient of one steel line. Through com prehensive analysis of test data, the variation of P(reading of preaure metre on tensile jack)with the uniformity coefficient can be deseribed by thefunctional relations, The stressing uniformity of a single steel line on work conditions during tension anchoring can be directly analysed from the relative regression curves presented in thispaper.

    本文通过在安康水电站工程预应力混凝土闸墩1:1模拟试验台座上的预锚试验,同时测出了锚索中单根钢绞线受力值Pd和整束锚索的单根钢绞线平均受力值,并定义Pd与的比值为锚索中单根钢绞线受力均匀性系数。经对试验数据进行整理、分类组合及综合分析,找出了锚索的张拉力P(张拉千斤顶上压力表读值)与均匀性系数的=A·PB函数关系,再进行回归分析,从显著相关的回归曲线上,可直观地得出单根钢绞线在锚索张拉锚固时各种工况下不同位置上受力的均匀性。

     
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