...结预应力；预应力增量；受弯承载力；延性 [gap=1668]Key words:prestressed concrete; unbonded prestress; prestress increment; bending capacity; ductility ...
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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.
计算了对称和不对称加载的无粘结预应力连续梁的应力增量。
The stress increments of unbonded prestressed tendon in the continuous beams subjected to both symmetrical and asymmetrical loads are analyzed.
在预应力加固设计方面，钢吊车梁与混凝土吊车梁不同，由于其刚度较小、挠度较大，当吊车荷载作用上去后，会引起水平拉杆作用效应增量。
The steel crane girder's rigidity is smaller and its deflection is larger, when the crane moves, there will be force increment in the prestressed horizontal tie.
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