预应力筋

最终得出结论：适当增加梁高，减少预应力筋用量可以达到降低截面造价的目的。

Finally , it is a conclusion that appropriate increasing in beam height and reducing the amount of prestressed reinforcement can reduce the project cost .

φ56mm预应力筋在澳门观光塔工程中的应用

Application of φ 56mm Prestressed Reinforcement in Macao Tour Tower Project

无粘结预应力筋U形自锚的初探

Initial exploration of U-shape Self-anchorage of unbonded prestressed reinforcing steel

配置CFRP预应力筋混凝土T梁受力性能研究

The behavior of concrete T-beams prestressed with CFRP Tendons

CFRP预应力筋RPC梁的抗疲劳性能研究

Study on Fatigue Behaviour of CFRP Prestressed RPC Beams

CFRP预应力筋夹片式锚具的试验研究有偏转角度夹片式扁锚静载试验方法探讨

Experimental Investigation of Wedge-type Anchors for CFRP Tendons Approach to Static Load Test Method of Clamping Piece Type Flat Anchorage with Deflection Angle

基于现有规范小曲率半径U形预应力筋张拉伸长量缺乏陈述，而该类预应力筋实测伸长值和理论伸长值偏差过大。

Little has been presented about the existing small curvature radius U-shaped prestressed tendon , whose practical elongation value and theoretical stretching elongation deviate greatly from each other .

利用workbench对于接触面的处理，实现了预应力筋的无粘结性和预制结构连接面的有效定义。

For the processing of workbench interface , we realized effective definition of the unbonded prestressed and the assembly connection surface .

预应力筋束形设计及PREC软件应用

Design of Prestress Tendon Curve and Application of Software PREC

Naaman等提出的无粘结预应力筋极限应力公式，该公式计算虽较为复杂，但有较高的计算精度。

A complex but accurate formulae for ultimate stress in tendons is recommended .

结合PREC软件的应用，介绍了预应力筋束形设计原理及工艺构造要点。

The chapter introduce the design principle of tendon curve by using of the software PREC .

仿真计算是在ANSYS程序上完成的，预应力筋和混凝土之间相互作用的有限元约束处理方法可以推广应用于其它预应力构件的仿真计算。

The simulated computation is completed based on the ANSYS program . The restriction method of finite element to deal with the interaction between the prestress tendon and concrete can be referred to the simulated computation of other prestress members .

预应力筋必须有EN10138中规定的足够塑性。

P The prestressing tendons shall have adequate ductility , as specified in EN10138 .

同时，为了充分提高梁承载能力及梁的抗裂性能，采用了有粘结预应力筋，梁跨度有26m和24m两种。

At the same time , bond prestressed steel bar was arranged in the beams spanning 26m and 24m respectively so as to improve fully their bearing capacity and crack resistance .

如果预应力筋达到EN10138中的最大荷载下的延伸率规定值，则可以假定其在延伸时有足够的塑性。

Adequate ductility in elongation may be assumed if the prestressing tendons obtain the specified value of the elongation at maximum load given in EN10138 .

利用该数值模型分析评估了混凝土轴心抗压强度和非预应力筋屈服强度对UPC梁性能以及无粘结预应力筋极限应力的影响。

The influence of concrete cylinder compressive strength and yield strength of nonprestressed steel on the behavior of UPC beams and the ultimate stress in unbonded tendon were analytically evaluated using the proposed numerical model .

通过两根18m跨雁形板在用体外预应力筋加固前后的静载及破坏实验，分析研究了体外预应力加固雁形板后的承载力变化，并按比拟梁法对加固构件的承载力进行了计算。

By means of static loading and destruction test on two 18 m span bird-shape plates before and after strengthening , the change of the bird-shape 's bearing capacity is analyzed which is strengthened by external tendon .

通过对主跨为120m的连续刚构桥分别采用普通混凝土和轻质高强混凝土进行试设计，对上部结构几何尺寸、预应力筋配束等进行优化，并对结构优化与经济指标进行对比分析。

Respectively using common concrete and high-strength light-weight concrete , a continuous rigid frame bridge with main span of 120 m is tried to design , their geometry dimensions of superstructure and setting style of prestressed bars are optimized , and the structure optimization and the economic index analyzed .

体外锚固有粘结预应力筋加固技术

Strengthening Technology of External - Anchoring Bonded Prestressed Rein force ment

反力墙预应力筋张拉顺序的模型试验研究

Model Test Study on Prestressed Rebar Tension Schemes of Reaction Wall

混凝土空心板预应力筋张拉的质量控制

Quality Control for Tensioning of Prestressed Tendons of Concrete Hollow Slab

钢梁进入屈服阶段后，预应力筋的应力增量显著提高。

After the yielding occurs , the stress increment increase evidently .

无粘结预应力筋在低温下疲劳锚固性能试验

Fatigue anchorage property tests of unbounded prestressed bars in low temperature

有粘结预应力筋加固连续箱梁技术研究

Technology Research on Reinforcing Continuous Box Beams by Bonded Prestressed Tendons

空间预应力筋预应力摩擦损失的计算

Calculation of the Friction Loss of Prestress for a Spacial Tendon

钢绞线预应力筋用齿合型单孔开口锚具的设计与试验研究

Design and test of dentate opening anchorage for single-strand prestressed tendons

预应力筋伸长值计算的分析与讨论

An Analysis and Discussion on Calculation for Prestressing Force Elongation Value

加载模式对无粘结预应力筋极限应力的影响

Load mode influence on the ultimate stress of unbonded prestressed tendon

曲线预应力筋一端张拉工艺计算

Calculation of the curved prestressing tendon tensi one d at one end

本文阐述了环向预应力筋损失理论；

This article firstly formulate theory of loss of circumferential prestressed reinforcement .