缓粘结型预应力钢绞线的研究与应用 关键词：缓粘结；预应力钢绞线；环氧树脂；涂层；安全耐久性 [gap=372]Key words：Retard-bonded；Prestressed strand；Epoxy resin；Coating；Safety and durability
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pretensioning prestressed strand 先张法预应力钢绞线
Short prestressed strand 短束预应力钢绞线
bridge prestressed strand 桥梁预应力钢绞束
opthread prestressed strand anchor 预应力对穿锚索
Steel strand for prestressed concrete 预应力混凝土用钢绞线
PRESTRESSED CONCRETE STEEL STRAND 预力钢绞线
Prestressed Concrete Steel Wire Strand 预应力混凝土结构用钢绞线
prestressed steel strand extention machine 预应力钢绞线拉伸设备
The computation of stress resulted by external load is relatively complex because the deformation of unbonded prestressed strand cannot comply with the plane section assumption.
无粘结筋的变形不符合平截面变形假定，因此由外荷载引起的应力计算比较复杂。
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.
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。
Secondly, the least length of pretensioned prestressed concrete slab is defined to make the full use of steel strand strength and avoid flexural crack occurs within the development length.
其次为使构件破坏时充分发挥预应力钢绞线的强度，防止弯曲裂缝出现在延伸长度之内，提出了先张预应力混凝土板在均布荷载作用下的最小板长。
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