By ultimate strength analysis at various conditions, the collapse of platform is caused by breakage of pile leg. And the brace breakage can also decrease the strength of the platform.
经过对平台不同情况下的承载力分析，发现平台的倒塌破坏均为平台桩腿破坏，同时撑杆的破坏也会降低平台的强度储备。
Taking the leg pile and horizontal bar of the platform as example to verify the index can also be applied to crack diagnosis of the pipe on platform.
通过对平台桩腿和水平杆的计算，验证了本文的裂纹诊断指标——振型差值曲率对导管架平台的管构件同样适用。
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