预应力筋张拉宜采取初拉及复拉的施工方法。
The third is that the tension of prestressed reinforcement should adopt the repeat tension construction method.
提出一种混凝土框架边梁预应力筋的新束型。
A new layout of prestressed cables in concrete frame spandrel beams is present.
体外预应力筋是体外预应力桥梁的重要构件。
Tendon is the important structural element of external prestressing bridge and these external prestressing techniques are applied in the bridge rehabilitation engineering.
体外预应力筋的应变增量与结构整体变形的关系。
The relationship between the strain increment of external prestressed tendons and the whole structural deformation.
预应力筋必须有EN 10138中规定的足够塑性。
P The prestressing tendons shall have adequate ductility, as specified in en 10138.
将FRP筋作为预应力筋使用，必须了解其应力松弛特性。
As prestressing tendons, the stress relaxation property of FRP tendons must be studied.
根据预应力结构原理，采用楼层下面的预应力筋加固方案。
According to the principle of prestressing structure, the under-storey prestressing tendon reinforcing plan can be adopted when the conditions can be met with.
它与预应力混凝土的区别在于预应力筋与混凝土的无粘结性。
The difference between it and the prestressed concrete and prestressed concrete is no adhesion.
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。
Based on the method, a simple formula calculating, the ultimate strength of unbonded prestress tendons was deduced.
竖向预应力筋能在腹板混凝土和箍筋中有效地建立起竖向预应力。
The vertical tendon can effectively set up vertical prestressing force in the concrete web and stirrups.
确定预应力筋布索方案是超长预应力混凝土结构设计的一项关键内容。
The tendon disposition option is an important part in the design of extra-long post-tensioned concrete frames.
本文介绍了采用高强预应力筋的体外预应力技术在结构加固中的应用。
This paper introduces the application of external prestress technology with high strength wire for strengthening and renovating R.
依此，证明所采用的渡槽结构型式及尺寸，预应力筋的布置方案是合理的。
Accordingly, the structural style, dimensions and the arrangement of prestressed reinforcements of the flume are proved to be reasonable.
此传感系统的研究为预应力筋应力状态的准分布测试探索了一条新的解决途径。
The sensing system provides a new exploration into the quasi-distributed stress monitoring of prestressed reinforcement.
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.
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.
对于预应力筋，提供的锚固的保护层最小厚度必须与相关欧洲技术认可中的规定一致。
For prestressing tendons, the minimum cover of the anchorage should be provided in accordance with the appropriate European Technical Approval.
为通过裂缝控制方程和承载力方程计算、确定预应力筋用量和非预应力筋用量创造了条件。
It gives condition for accounting area of common bars and area of prestressing bars by equations of crack controlling and capacity carrying.
同时将预应力筋张拉阶段的张拉伸长值与理论值作了比较； 对测试结果进行了对比分析。
The prestressing stage length of extension and test results are compared with the theoric calculation.
在此基础上给出了无粘结预应力筋极限应力计算公式和UPPC梁正截面抗弯强度计算方法。
The formula for calculating the ultimate stress of unbonded post tensioning tendons and the calculating method of ultimate flexural strength of UPPC beam Bridges are proposed.
在拉杆拱体系中，梁底预应力筋和非预应力筋成为主要的受拉部分，拉杆上方成为低应力区。
In this system, the steel wires and steel bars are the main parts that bear the tensile force, the stress in the district above the dragging bar is low.
根据预应力筋孔道和预应力筋的匹配要求，计算确定常用预应力筋重心偏移孔道中心的距离。
According to the matching demand of prestressing duct's size and prestressed strands' area, deviation distances of prestressed strands are calculated.
在此基础上，提出了考虑混凝土种类、预应力筋张拉方式以及钢筋配筋率的徐变变形设计建议。
Based on the above research, design Suggestions taking the types of concrete, the tensioning measures of prestressed steel bar and the rate of reinforcement into account were given.
使用荷载下无粘结部分预应力混凝土梁应力分析的主要困难，是如何确定无粘结预应力筋的应力。
The main difficulty of stress analysis of unbonded partially prestressed concrete beam is how to determine unbonded tendons stress.
如果预应力筋满足enISO 15630中对弯曲性的要求，则可以假设其有足够的弯曲塑性。
Adequate ductility in bending may be assumed if the prestressing tendons satisfy the requirements for bendability of en ISO 15630.
在分析国内外大量试验数据和文献研究的基础上，建立了无粘结预应力筋极限应力实用计算方法。
Based on the analysis of the experimental data and the research results reported in references, the practical calculating equation of the ultimate stress in unbonded post tensioning is proposed.
计算表明，空间线型预应力筋水平投影的曲率不宜太大，线型不宜太复杂，应尽量选择单波形曲线。
The results show that it is inadvisable to select a large curvature of horizontal projection and a complicated space curve, while the use of single waved curve would be better.
计算UPPC梁(板)的抗弯强度，关键是确定构件在极限承裁能力时无粘结预应力筋的极限应力值。
The key of calculating flexure strength of UPPC beam is to determine unbounded prestressed tendons ultimate value when the components are under their ultimate load ability.
该传感测试方法为大型结构特别是预应力混凝土结构中预应力筋的应力分布测试提供了新的解决思路。
The present method provides a new way for the distributed stress measure of large structures, especially the prestressed reinforcement in prestressed concrete structures.
无粘结部分预应力混凝土(UPPC)梁桥抗弯强度计算的关键，是如何确定无粘结预应力筋的极限应力。
The key to calculate the ultimate flexural strength of unbonded partially prestressed concrete (UPPC) beam Bridges is how to determine the ultimate stress of unbonded post tensioning tendons.
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