最后讨论了摩阻系数对张拉控制应力的影响，提出现场测试的一般性原则和要求。
Finally, the influence of frictional resistance factors on the controlled tensioned stress is discussed and the general principle and requirements of field measurement are presented.
预应力筋用量的增加、张拉控制应力的增大使预应力框架梁、柱的开裂荷载提高。
The crack load increases with the increase of the amount of the prestressing steel or the tensioning stress.
随着配筋率的增大和张拉控制应力的提高，有黏结预应力CFRP筋混凝土梁的位移延性有所降低；
With the increase of reinforcement ratios or stretching control stresses of CFRP tendons, displacement ductility of beams decreases to some extent.
它们的演化受左旋挤压、右旋拉张两种应力场的转换控制。
Their evolution has been alternatively controlled by two kinds of stress field-left lateral compression, right lateral tension.
采取应力控制，伸长校核的原则，确保了预应力张拉施工的质量。
Thequality of prestressed stretching is guaranteed by the principle of stress control and stretch adjusting.
在施工过程中，对预应力张拉实行有效的质量控制，可以确保预应力体系的质量和桥梁的工程质量。
In the process of construction, the effective quality control of prestressed tension can ensure the quality of prestressed system and bridge engineering.
随着预应力在桥梁施工中的普遍应用，预应力张拉控制已成为桥梁上部结构施工中的一道重要工序。
With the common application of prestress in bridge construction, the strain-pull controlling has become an important working procedure during the upper structure construction of bridge.
给出了实际工程应用中利用数字化张拉系统施工的控制过程记录，以及所测定的预应力损失值与理论计算值的对比。
The construction record controlled by digital prestress tension system and the comparison between calculated and tested values of prestressing loss in an actual project are discussed.
在计算公式中引入锚具效率系数和张拉应力控制系数等重要影响因素，对确定锚索安全系数有重要参考价值。
The important influence of efficiency factor of anchorage and tensile parameter were involved in the mathematic formula, which was an important reference of ascertaining the safe coefficient.
对T型梁桥梁板预应力张拉控制相关参数的计算，可为今后的施工提供参考。
The calculation on relative parameters for strain-pull controlling of T-style beam bridge prestress, can provide reference for construction in future.
本工程注意选择配套锚具及张拉设备，控制张拉应力及伸长率，使无粘结预应力达到质量要求。
If mating anchorages and stretching devices are selected carefully, and tensile stress and elongation are controlled, the unbonded prestressing will certainly meet its quality requirements.
提出了预应力筋束分步张拉施工与荷载控制方法，以减小管壁混凝土的轴向次弯矩。
The methods are suggested to determine the tensile steps and the tensile forces of prestressed strands for decreasing the secondary bending moment along the axial of the penstock.
为了保证无粘结预应力砼结构能顺利张拉，本文同时也论述了无粘结预应力钢筋砼结构能顺利张拉前的裂缝控制。
In order to guarantee drawing rightly for unbonded prestressed concrete structure, crack control measures before drawing are illuminated in this paper.
为了保证无粘结预应力砼结构能顺利张拉，本文同时也论述了无粘结预应力钢筋砼结构能顺利张拉前的裂缝控制。
In order to guarantee drawing rightly for unbonded prestressed concrete structure, crack control measures before drawing are illuminated in this paper.
应用推荐