试验结果表明，玻璃纤维长丝纱有较明显的应力松驰现象，反复循环负荷作用对玻璃纤维长丝纱的强伸性能有较大的影响。
As a result, the stress-relaxation of yarn is obviously observed, and the cyclic loading has much more influence on the tensile property of yarn.
完成了16根无粘结预应力混凝土梁的低周反复荷载试验。
Specimens of 16 unbonded prestressed concrete beams under low cyclic loading were tested.
本文进行了有粘结和无粘结预应力混凝土框架的反复荷载试验。
Bonded and unbonded prestressed concrete frames are tested and analysed up to failure.
本文采用碳纤维布和外包钢两种加固方法，对6个混合装配无粘结预应力梁进行了低周反复加载试验。
The test of 6 hybrid precast unbonded post-tensioned concrete beams under reversed cyclic loading is carried out.
本文通过试件的中心受拉试验，测定了砼的受拉应力-变形全曲线。部分试件还进行了反复荷载试验。
Complete stress-deformation curves for concrete in tension were obtained from axial tension tests in which some of the specimens were tested under cyclic loading.
进行了无粘结预应力板墙框架的反复荷载试验，对无粘结预应力板墙框架的工作特性、无粘结预应力筋在水平荷载下的变化规律进行了分析。
Based on the experimental researches, the characteristic behavior of slab and wall frame with unbounded prestressing in the slab under low frequency cyclic loading have been studied.
试验结果表明，玻璃纤维长丝纱有较明显的应力松驰现象，反复循环负荷作用对玻璃纤维长丝纱的强伸性能有较大的影响。
As a result, the stress-relaxation of yarn is obviously observed, and the cyclic loading has much more influence on the tensile property...
它还可以反复多次进行同一个试验，能够更加全面观察模型上所有点的受力情况，能够更加准确测量出模型的变形和应力。
In simulation test, the same test can be made times without number and results of test are more full-scale and exact.
它还可以反复多次进行同一个试验，能够更加全面观察模型上所有点的受力情况，能够更加准确测量出模型的变形和应力。
In simulation test, the same test can be made times without number and results of test are more full-scale and exact.
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