预应力钢筋是在结构构件使用前，通过先张法或后张法预先对构件混凝土施加的压应力。钢筋混凝土结构，构件受拉会有裂缝，虽然不影响安全，但是感观不好。采用先给钢筋施加拉力，然后浇筑混凝土，待强度达到要求松开钢筋，使钢筋回缩，与正常使用荷载的拉力抵消（先张法）后张法则是浇筑混凝土预留孔洞，成型后加受拉力的钢筋，然后用器械锚固在构件两头。
... prestressed reinforcement 预应力钢筋 ; 非预应力钢筋 prestressed brickwork 预加应力砌砖块 prestressed slab 预应力平板 ...
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...法；预应力钢筋；胶囊芯模；墩式台座 [gap=1177]Key words]:prestressed hollow slab; pretensioning method; prestressed steel bar; capsule of hollow-core plate girder; tun-pedestal ..
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未粘合的预应力钢筋 unbonded tendon
预应力钢筋束 prestressing tendon ; stressing tendon
预应力钢筋腱外形 tendon profile
张拉预应力钢筋千斤顶 prestresed steel bar drawing jack
一阶段预应力钢筋砼管 YYG
非预应力钢筋 prestressed reinforcement
预应力钢筋混凝土桥 prestressed concrete bridge
预应力钢筋混凝土管 prestressed reinforced concrete pipe
预应力钢筋张拉机 Prestressed steel bar tension machine
为混凝土平台中预应力钢筋的布置和施工提出了指导意见。
This paper provides guiding Suggestions for the arrangement of the prestressed reinforcement and the construction of the concrete platform.
混凝土，钢筋和预应力钢筋的规定见第3部分或有关产品标准。
Provisions for concrete, reinforcement and prestressing steel are given in Section 3 or the relevant Product Standard.
在可能的情况下，重新张拉预应力钢筋也是一种快捷便利的方法。
If it is possible, stret ching prestressed bar all over again is also a fast and convenient method.
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