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阅读下图KL1端支座(600×600的端柱)的支座上部纵筋在端支座的锚固水平段长度Ld为 mm 。注:混凝土强度等级C25,二级抗震等级,钢筋等级为HRB400。钢筋保护层厚度为28mm。d箍=8mm, d柱=25mm。
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