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.
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.
文章叙述了该构件的预应力张拉技术、现场生产流水线、吊装施工技术及防水处理方法。
This paper explains the prestressing expansion technique, in site producing flow line, hanging construction technique and water proof treatment method.
本文结合工程实例，介绍预应力钢筋张拉时理论伸长值的计算方法。
The paper introduces the calculation methods of extension of prestressed reinforcement combining with project instance.
张拉千斤顶、油表在预应力钢束张拉前进行检验和标定，使用中按规定程序进行送检标定。
Tensioning jack, oil gauge shall be checked and calibrated prior to the prestressed steel strands tensioning and executed to check and calibrate in using as per the specified procedure.
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.
针对柔性系杆拱采用端横梁压重的问题，由于端横梁自重较大，而且系杆张拉后端横梁难以张拉预应力筋，端横梁的安全性是需要解决的一个难题。
It is a problem to assuring the safety of the end crossbeam in the arc with flexible tied bar, because it is difficult to prestress the end crossbeam after tensing the tied bar.
对目前在国内外引起广泛关注的大跨度空间索承网壳结构进行了成形即预应力张拉阶段的试验研究。
A model experimental research of the stage of form finding (namely prestressing) for the cable-supported lattice shell structure, which is widely paid attention to in the world, is carried out.
竖向预应力应两次张拉以保证有效预应力。
The vertical tendon had to be prestressed twice to ensure effective prestressing.
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.
张拉弦钢拱架结构是一种新型的预应力钢结构体系。
The stressed-arch frame is a new type of prestressed steel structure system.
预应力张拉施工中夹片、钢绞线和锚环之间存在着很大的摩擦阻力。
There is much prestressing loss for friction resistance among wedge, steel strand and anchor-ring in engineering.
不同的连续端混凝土浇筑和后连续预应力张拉顺序会导致永久支座负弯矩区的压应力储备不同。
The cast of concrete at different end and the post-tensioning of continuous prestress make the negative bending moment section of the permanent support have different compressive stress reservation.
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.
在桥梁短索钢绞线预应力的施工中，锚夹具在张拉时的回收对钢绞线伸长值的量测有着不可忽略的影响。
During the prestressed construction of bridge, the field of anchor holder while straining has greatly influenced the measurement on the elongation indicators of lanyard steel strand.
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.
根据对弹性模量、非比例强度、抗拉强度和断裂伸长率的观察分析，提出了预应力钢丝张拉施工工艺的改进意见。
Some ideas on improvement in prestressing process are raised according to the observation and analysis on modulus of elasticity, apparent yield limit, tensional strength and percentage elongation.
为了解预应力钢绞线张拉顺序对新老混凝土组合梁力学性能的影响，进行了双T形截面新老混凝土组合梁试验研究。
The old and new concrete of composite beam with double T-section was tested to investigate the effect of tension sequence of prestressing tendon on mechanical behavior of composite beam.
预应力张拉是预应力混凝土构件施工的重要环节。
The prestressed tension is an important part of the prestressed concrete component construction.
说明了地幔隆起可在盆地区产生拉张环境，正是这种拉张应力场导致了地裂缝的产生。
The simulation results show that a tension stress field is produced with mantle lifting up.
提出预应力数字化张拉技术的概念，并介绍基于这一概念的预应力数字化张拉系统的研究状况和成果。
In this article, authors provide the idea of digital prestress tension technology, and introduce situation and achievements of study of the digital prestress tension system based on the idea.
后张法预应力混凝土梁板在张拉施工过程中，经常会出现一些施工病害。
Some diseases usually appear in the tension construction of post-tensioning prestressed concrete beam slabs.
介绍了南洋河大桥的工程概况，并根据桥的使用状况提出了采用体外预应力竖向张拉法来加固旧T梁的设计构想和应遵循的设计原则。
The engineering situation of Nanyang river bridge is introduced and the idea of adopting external prestress vertical tension method to reinforce t beam and design principle are proposed.
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.
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.
该改造工程不需要对预应力钢筋二次张拉和对结构进行临时支撑，因而明显地缩短了施工周期并节省了工程费用。
Using this new technology, there needs no the second tensioning of the prestressing tendons and temporary braces, thus the construction period and cost can be cut down obviously.
试验证明，扭力扳手预应力锚杆张拉值与锚杆应力计监测值基本一致，说明采用扭力扳手进行预应力锚杆张拉的施工方法简易可行。
It is proved that the stretching values with the wrest wrench are almost the same as those with the stress gauge monitoring method, but the former method is simpler and more feasible.
本文总结介绍中的悬浮式张拉在吉利河特大桥体外预应力中应用。
This paper summarizes the application of floating tension in the prestressing of construction of Jili river big bridge.
利用动力松弛法对预应力张拉膜进行初始平衡形状的确定以及静载分析。
Initial equilibrium shape and static behavior of pretensioned membrane structures is analyzed by dynamic relaxation method in this paper.
利用动力松弛法对预应力张拉膜进行初始平衡形状的确定以及静载分析。
Initial equilibrium shape and static behavior of pretensioned membrane structures is analyzed by dynamic relaxation method in this paper.
应用推荐