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unbonded prestressed concrete     
相关语句
  无粘结预应力混凝土
     The application of ANSYS software to the bearing capacity analysis of unbonded prestressed concrete box girder
     ANSYS软件在无粘结预应力混凝土箱型梁承载力分析中的应用
短句来源
     In order to discuss the performance under static load and repeated load, tests on beam models have bean done. It provides related parameter and evidence for application in railway of unbonded prestressed concrete beam.
     为了探讨无粘结部分预应力混凝土铁路梁在静力及重复荷载作用下的有关性能,对模型梁进行静载破坏和重复荷载试验,为铁路无粘结部分预应力混凝土梁的设计提供有关参数,为无粘结预应力混凝土梁在铁路上的应用提供依据。
短句来源
     The results of analytical investigation on the flexural strength and structural behavior of unbonded prestressed concrete(UPC)beams with various material strengths were presented.
     给出了不同材料强度的无粘结预应力混凝土(UPC)梁抗弯强度和结构性能的分析研究结果。
短句来源
     SEVERAL PROBLEMS SECTION DESIGN IN UNBONDED PRESTRESSED CONCRETE PLATE STRUCTURE
     无粘结预应力混凝土平板设计的若干问题
短句来源
     Study on Construction Technology of Unbonded Prestressed Concrete
     无粘结预应力混凝土施工技术研究
短句来源
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  无粘结预应力砼
     Structural Design for 24m Long-span Beam of Unbonded Prestressed Concrete
     24m无粘结预应力砼大梁的结构设计
短句来源
     Design of the Large-Span and Irregular Roof Structure in Unbonded Prestressed Concrete
     大跨不规则无粘结预应力砼屋盖结构设计
短句来源
     Scheme Selection in Unbonded Prestressed Concrete Floor Structures
     无粘结预应力砼楼面结构方案选择
短句来源
     A Survey on Applications of Unbonded Prestressed Concrete Slab-Column Structure
     无粘结预应力砼板柱结构的应用研究
短句来源
     Experimental Research on the Unbonded Prestressed Concrete Flat Slab-T-shaped Column Connections Under Gravity Loads
     竖向荷载作用下无粘结预应力砼平板-T形柱节点的试验研究
短句来源
更多       
  无粘结预应力
     The influnce of the axial load of bearing capacity on nomal section of unbonded prestressed concrete flexural members are checked by the tests with 4 unbonded prestressed concrete beams of 200mm×250mm×4000mm.
     通过4根200mm×250mm×4000mm等比例无粘结预应力钢筋混凝土梁正截面承载力的试验研究,论证了轴向力对预应力混凝土受弯构件正截面承载力的影响。
短句来源
     Structural Design for 24m Long-span Beam of Unbonded Prestressed Concrete
     24m无粘结预应力砼大梁的结构设计
短句来源
     The application of ANSYS software to the bearing capacity analysis of unbonded prestressed concrete box girder
     ANSYS软件在无粘结预应力混凝土箱型梁承载力分析中的应用
短句来源
     Design of the Large-Span and Irregular Roof Structure in Unbonded Prestressed Concrete
     大跨不规则无粘结预应力砼屋盖结构设计
短句来源
     In order to discuss the performance under static load and repeated load, tests on beam models have bean done. It provides related parameter and evidence for application in railway of unbonded prestressed concrete beam.
     为了探讨无粘结部分预应力混凝土铁路梁在静力及重复荷载作用下的有关性能,对模型梁进行静载破坏和重复荷载试验,为铁路无粘结部分预应力混凝土梁的设计提供有关参数,为无粘结预应力混凝土梁在铁路上的应用提供依据。
短句来源
更多       
  无粘结预应力钢筋混凝土
     The influnce of the axial load of bearing capacity on nomal section of unbonded prestressed concrete flexural members are checked by the tests with 4 unbonded prestressed concrete beams of 200mm×250mm×4000mm.
     通过4根200mm×250mm×4000mm等比例无粘结预应力钢筋混凝土梁正截面承载力的试验研究,论证了轴向力对预应力混凝土受弯构件正截面承载力的影响。
短句来源
     The Second Moments Analysis of Unbonded Prestressed Concrete Structure
     无粘结预应力钢筋混凝土结构中次弯矩的研究
短句来源

 

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    This paper presents a moment-curvature analysis for unbonded partial prestressed concrete beam to determine the average strain of concrete along the beam and to establish the compatibility equation of the tendon. By dividing the beam into finite subintervals and using iterative method, the stress increcements in the tendon and other data in the whole loading procedure are obtained. Comparasion of the calculated results with the test results shows that the present analytical mehtod is precise and can be used...

    This paper presents a moment-curvature analysis for unbonded partial prestressed concrete beam to determine the average strain of concrete along the beam and to establish the compatibility equation of the tendon. By dividing the beam into finite subintervals and using iterative method, the stress increcements in the tendon and other data in the whole loading procedure are obtained. Comparasion of the calculated results with the test results shows that the present analytical mehtod is precise and can be used for precise calculation of unbonded prestressed concrete beams and for thief computer modelling test.

    本文用弯矩曲率分析法,对无粘结部分预应力混凝土梁提出沿梁的长度方向束中心处混凝土平均应变计算及束的应变协调方程,并将梁在长度方向离散为有限个微段后,用迭代法对梁的整个加载过程进行全过程分析,求得束的应力增量及各类参数。计算结果与试验值作了比较,证明本文提出的分析方法精度较为理想,可用于精确计算无粘结部分预应力梁和用计算机进行梁的模拟试验。

    As the unbonded tendons can slide along the concrete in beams, the ultimate increment of the stress of unbonded tendons can not be known by the consideration of strains of one section of the member. Only by the consideration of both the strains on failure section and the maximum flexure of the beam at the same time, the results can reflect ,the essential character of the ultimate stress of unbonded tendons.This article proposed a new analytical method for the ultimate strength of unbonded prestressed concrete...

    As the unbonded tendons can slide along the concrete in beams, the ultimate increment of the stress of unbonded tendons can not be known by the consideration of strains of one section of the member. Only by the consideration of both the strains on failure section and the maximum flexure of the beam at the same time, the results can reflect ,the essential character of the ultimate stress of unbonded tendons.This article proposed a new analytical method for the ultimate strength of unbonded prestressed concrete beams according to the principle of equivalent deformation. Based on the method, a simple formula calculating, the ultimate strength of unbonded prestress tendons was deduced.Through the tests of unbonded beams, the analytical model has been verified. The precision of the formula for calculating the ultimate stress of unbonded tendons has been proved to be the best at the present.

    由于无粘结筋能够在混凝土中滑动,所以根据某一截面上的应变状态不能确定无粘结筋的应力变化。只有同时考虑破坏截面上的应交状态和梁的变形,才能使所得到的描述无粘结筋应力变化的结果更接近实际情况。本文根据交形等效的原理,提出了无粘结预应力梁极限强度的分析方法。根据这种方法推导出简便的无粘结预应力筋极限应力计算公式。通过试验,对计算模型进行了验证。试验证明本文公式有良好的计算精度。此外,本文还将公式与国外研究成果作了比较。

    Bonded and unbonded prestressed concrete frames are tested and analysed up to failure. Results show that the specimens can form plastic hinges. The amount of energy dissipation of the bonded frame is larger than that of unbonded ones.Nevertheless, the residue displacement of the latter is smaller than that of theformer. After completion of the test, the prestress loss of unbonded frames isnegligible, whereas the prestress loss of the bonded frame can be as great as 70%in plastic hinge zones....

    Bonded and unbonded prestressed concrete frames are tested and analysed up to failure. Results show that the specimens can form plastic hinges. The amount of energy dissipation of the bonded frame is larger than that of unbonded ones.Nevertheless, the residue displacement of the latter is smaller than that of theformer. After completion of the test, the prestress loss of unbonded frames isnegligible, whereas the prestress loss of the bonded frame can be as great as 70%in plastic hinge zones. The computation method proposed herein is capable of fullrange hysteresis analysis of PC and RC frames, including descending part.

    本文进行了有粘结和无粘结预应力混凝土框架的反复荷载试验。结果表明,试件能够形成塑性铰;有粘结框架的耗能量大于无粘结框架,但无粘结框架的残余变形比有粘结框架小:试验后无粘结框架的预应力损失可略去不计,而有粘结框架在塑性铰处的预应力损失则达70%。本文提出的算法实现了预应力框架包括下降段在内的有限元全过程滞回分析,同时也可适用于非预应力框架。

     
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