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對預應力鋼結(jié)構(gòu)鋼或跨度大于

答案：答案：預應力鋼結(jié)構(gòu)是一種通過預先施加拉力（預應力）來改善結(jié)構(gòu)性能的鋼結(jié)構(gòu)。預應力可以是張拉預應力，也可以是壓縮預應力。預...

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