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首页> 外文会议>International Conference on Structures and Building Materials(ICSBM) >Fatigue tests of Overlapping Details for Orthotropic Steel Bridge Decks and Transverse Beams of Stay Cables
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Fatigue tests of Overlapping Details for Orthotropic Steel Bridge Decks and Transverse Beams of Stay Cables

机译：疲劳试验的正交钢桥甲板和横梁横向梁的重叠细节

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摘要

Rail-cum-road cable-stayed bridge with single cable plane is eccentric under moving load, overlapping details for orthotropic steel bridge decks and transverse beams of stay cables are in typical complex space stress condition. A fatigue test is performed to evaluate anti-fatigue performance of overlapping details under the combination of highway and light railway loads. A 1:1 model is adopted for the overlapping details, where a fatigue loading test for 2×10~6 cycles is carried out. Its test results show: the structural stress level is low, no crack is found on the test model after cyclic loading for 2×10~6 cycles, then load amplitude is gradually increased and no crack is found after cyclic loading for 4.25×10~6 cycles, finally a result is obtained that no fatigue crack will be found on the overlapping details for orthotropic steel bridge decks and transverse beams of stay cables within design life, because fatigue strength requirements are satisfied.
机译：轨道 - 带路斜拉桥具有单缆线平面的偏心桥在移动负载下是偏心，用于正交钢桥甲板和横向梁的重叠细节均为典型的复杂空间应力条件。进行疲劳试验以评估在公路和轻铁路载荷组合下重叠细节的抗疲劳性能。采用1：1模型用于重叠细节，其中执行2×10〜6周期的疲劳负载测试。其测试结果表明：结构应力水平低，在试验模型中没有发现裂缝循环加载2×10〜6循环后，循环载荷循环升值逐渐增加，循环加载后没有裂缝4.25×10〜 6个循环，最后获得结果，即在设计寿命内的正交钢桥甲板和横向电缆的横向梁的重叠细节中没有找到疲劳裂缝，因为满足疲劳强度要求。

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