Based on the practice, it presents the principles and calculations of the external prestressing applied to strengthen the existing bridge.
结合实践，介绍了体外预应力加固旧桥的原理及配筋计算方法。
The external prestressing strengthening method has become the first-selected method in the bridges upper structure strengthen because of its numerous advantages.
体外预应力加固法由于众多的优点而成为桥梁上部结构加固的首选方法。
As a branch of the post-tensioned prestressing system, external prestressing technique has become a hotspot of prestressing techniques in recent years.
体外预应力技术作为后张预应力体系的重要分支之一，近年来成为预应力技术的热点。
As to concrete structure of external prestressing, for it affects security and trustiness of structure, the antisepsis of external prestressing cable is extremely important.
对于体外预应力混凝土结构，预应力索的防腐十分重要，它关系到结构的安全性和可靠度。
This serves as part of a research program for evaluation of the fatigue of external prestressing tendon systems.
这项研究是体外预应力钢束体系疲劳评价研究的一部分。
Section increasing method is given priority to apply to the corroded columns, and then the comprehensive method to the beams, external prestressing method to the slabs.
结构加固中，柱优先采用加大截面法，梁采用综合加固法，板采用体外预应力法。
External prestressing means that the prestressing bars are disposed outside the beam bodies, which in tradition are inside the beams with or without bond.
体外预应力是指预应力筋布置在混凝土梁体以外的预应力，与之相对的即为传统的预应力筋布置在构件截面内的有粘结或无粘结预应力。
This paper introduces the external prestressed bridge structure in details, including steering block, anchor block, and prestressing tendon, etc.
介绍了体外预应力桥梁结构的构造细节，包括转向块、锚块、预应力束等。
The study was carried out to further investigate the simply supported reinforced concrete beam strengthened by external prestressing through experiment and theory analysis.
本文以试验梁为研究对象，采用试验与理论相结合的方法，对体外预应力加固简支梁进行了较深入的研究。
Tendon is the important structural element of external prestressing bridge and these external prestressing techniques are applied in the bridge rehabilitation engineering.
体外预应力筋是体外预应力桥梁的重要构件。
According to the present formula, this article mainly analysis the different simplified formula to the ultimate stress of external prestressing tendon on the base of theoretical analysis.
根据现有的国内外公式，在理论分析的基础上对既有的多组体外预应力筋极限应力简化计算公式进行验证分析。
In the structure dynamic performance, nature frequency is a very important parameter, the in-depth analysis on nature frequency is the research base of external prestressing concrete structure.
结构动力特性中，自振频率是反映结构自身特点的重要参数，深入分析体外预应力结构的自由振动频率是研究体外其动力特性的基础。
Introduced here are details of the design, construction and appraisal of unsafe bridge enhancement by means of external prestressing, with the example of Zhongjiang bridge in the city of Wuhu.
通过芜湖市中江桥加固工程实例，介绍采用体外预应力方法加固危桥的具体设计施工及其效果评价。
Vibration characteristics of external tendons used on external prestressing concrete beams are detailedly calculated. Also the tested vibration characteristics of railway concrete beams are presented.
详细计算了体外预应力混凝土梁中常用型号体外索的自振特性，介绍了铁路混凝土梁的实测自振频率。
The current applied fields of external prestressing mainly includes externally prestressed concrete bridge, structure rehabilitation and prestressed steel structure, etc.
体外预应力技术的应用领域现阶段主要包括体外预应力混凝土桥梁、结构的体外预应力加固和预应力钢结构。
External prestressing is one of the most effective methods to strengthen bridge.
体外预应力技术是加固既有钢筋混凝土桥梁结构最有效的方法之一。
The composite box girder with corrugated steel webs is a new structure applying external prestressing technique to bridge construction.
波形钢腹板组合箱梁是将体外预应力技术应用于桥梁领域的一种新的结构形式。
Using strengthening of the existing Bridges as examples, it introduces application of external prestressing technique on strengthening of existing t frame Bridges.
结合桥梁加固实例，介绍体外预应力技术在T构桥梁加固中的应用。
External prestressing CFRP can give full play to the strength of CFRP to improve the structure of the normal use performance and ultimate bearing capacity.
使用体外预应力碳纤维板加固受弯构件，可以充分发挥碳纤维板的强度，提高结构的正常使用性能和极限承载能力。
However the theory research on external prestressing technique applicable to the reinforcement of such Bridges is becoming common now, the reinforcement theory is still immature.
目前对适用于这类桥梁加固的体外预应力技术的理论研究比较普遍，但其加固理论并未成熟。
However the theory research on external prestressing technique applicable to the reinforcement of such Bridges is becoming common now, the reinforcement theory is still immature.
目前对适用于这类桥梁加固的体外预应力技术的理论研究比较普遍，但其加固理论并未成熟。
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