桥梁通常有那几种结构形式?每种形式的优缺点是什么?
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![桥梁通常有那几种结构形式?每种形式的优缺点是什么?](/uploads/image/z/6216546-66-6.jpg?t=%E6%A1%A5%E6%A2%81%E9%80%9A%E5%B8%B8%E6%9C%89%E9%82%A3%E5%87%A0%E7%A7%8D%E7%BB%93%E6%9E%84%E5%BD%A2%E5%BC%8F%3F%E6%AF%8F%E7%A7%8D%E5%BD%A2%E5%BC%8F%E7%9A%84%E4%BC%98%E7%BC%BA%E7%82%B9%E6%98%AF%E4%BB%80%E4%B9%88%3F)
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