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- 2006-01-01
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发表于 2011-06-25 23:56
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3 、《水运工程混凝土质量控制标准》(JTJ 269—96) F¤ò©p bbs.3c3t.com *Ý,d3 ．1 ．1* 混凝土拌合物质量指标的检验应符合下列规定：F¤ò©p bbs.3c3t.com *Ý,d(1) 各种混凝土拌合物均检验其稠度；F¤ò©p bbs.3c3t.com *Ý,d(2) 有抗冻要求的混凝土拌合物检验其含气量；F¤ò©p bbs.3c3t.com *Ý,d(3) 流动性和大流动性混凝土拌合物检验其稠度损失；F¤ò©p bbs.3c3t.com *Ý,d(4) 根据需要检验混凝土拌合物的均匀性；F¤ò©p bbs.3c3t.com *Ý,d(5) 有温度控制要求的混凝土拌合物，检测其温度。F¤ò©p bbs.3c3t.com *Ý,d3 ．2 ．1 混凝土的强度等级应按立方体抗压强度标准值fcu ，k(N ／mm2) 划分，其分级如表3 ．2 ．1 。F¤ò©p bbs.3c3t.com *Ý,d混凝土强度等级F¤ò©p bbs.3c3t.com *Ý,d表3 ．2 ．1 F¤ò©p bbs.3c3t.com *Ý,d普通混凝土F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C10F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C15F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C20F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C25F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C30F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C35F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C40F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C45F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C50F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C55F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C60F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C70F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C80F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 引气混凝土F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| —F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C15F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C20F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C25F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C30F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C35F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| C40F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| —F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| —F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| —F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| —F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| —F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| —F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
|
注：立方体抗压强度标准值系指按标准方法制作和养护的边长为150mm 的立方体试件，在28d 龄期，用标准试验方法测得的抗压强度总体分布中的一个值，强度低于该值的百分率不超过5 ％。 F¤ò©p bbs.3c3t.com *Ý,d3 ．3 ．2 海水环境混凝土在建筑物上部位的划分应符合表3 ．3 ．2 的规定。F¤ò©p bbs.3c3t.com *Ý,d海水环境混凝土部位划分F¤ò©p bbs.3c3t.com *Ý,d表3 ．2 ．2 F¤ò©p bbs.3c3t.com *Ý,d大气区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 浪溅区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水位变动区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水下区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 设计高水位加1.5m以上F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 设计高水位加1.5m至设计高水位减1.0m之间F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 设计高水位减1.0m至设计低水位减1.0m之间F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 设计低水位减1.0m以下F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
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注：①对开敞式建筑物，其浪溅区上限，可根据受浪的具体情况适当调高；F¤ò©p bbs.3c3t.com *Ý,d ②对掩护条件良好的建筑物，其浪溅区上限可适当调低。F¤ò©p bbs.3c3t.com *Ý,d3 ．3 ．3 淡水环境混凝土在建筑物上部位的划分，应符合表3 ．3 ．3 的规定F¤ò©p bbs.3c3t.com *Ý,d淡水环境混凝土部位划分F¤ò©p bbs.3c3t.com *Ý,d表3 ．3 ．3 F¤ò©p bbs.3c3t.com *Ý,d水上区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水下区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水位变动区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 设计高水位以上F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 设计低水位以下F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水上区与水下区之间F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
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注：水上区也可按历年平均最高水位以上划分。F¤ò©p bbs.3c3t.com *Ý,d3 ．3 ．5 海水环境钢筋混凝土的保护层最小厚度应符合表3 ．3 ．5 的规定。F¤ò©p bbs.3c3t.com *Ý,d海水环境钢筋混凝土保护层最小厚度(mm) 表3 ．3 ．5 F¤ò©p bbs.3c3t.com *Ý,d建筑物所处地区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 大气区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 浪溅区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水位变动区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水下区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 北方F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 50F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 50F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 50F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 30F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 南方F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 50F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 65F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 50F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 30F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
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注：①混凝土保护层厚度系指主筋表面与混凝土表面的最小距离；F¤ò©p bbs.3c3t.com *Ý,d ②表中数值系箍筋直径为6mm 时主钢筋的保护层厚度，当箍筋直径超过6mm 时，保护层厚度应按表中规定增加5mm ；F¤ò©p bbs.3c3t.com *Ý,d ③位于浪溅区的码头面板、桩等细薄构件的混凝土保护层，南、北方一律取用50mm ；F¤ò©p bbs.3c3t.com *Ý,d ④南方指历年最冷月月平均气温大于0 ℃的地区。F¤ò©p bbs.3c3t.com *Ý,d3 ．3 ．6* 海水环境预应力混凝土的保护层最小厚度应符合下列规定。F¤ò©p bbs.3c3t.com *Ý,d3 ．3 ．6 ．1* 当构件厚度为0 ．5m 以上时应符合表3 ．3 ．6 的规定。F¤ò©p bbs.3c3t.com *Ý,d海水环境预应力筋的混凝土保护层最小厚度值(mm) 表3 ．3 ．6 F¤ò©p bbs.3c3t.com *Ý,d所以部位F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 大气区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 浪溅区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水位变动区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水下区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 保护层厚度F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 75F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 90F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 75F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 75F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
|
注：①构件厚度系指规定保护层最小厚度的方向上的构件尺寸；F¤ò©p bbs.3c3t.com *Ý,d②后张法的预应力筋保护层厚度系指预留孔道壁至构件表面的最小距离；F¤ò©p bbs.3c3t.com *Ý,d③制作构件时，如采取特殊工艺或专门防腐措施，应经充分技术论证，对钢筋的防腐蚀作用确有保证时，保护层厚度方可不受上述规定的限制；F¤ò©p bbs.3c3t.com *Ý,d④永存应力小于400N ／mm2 的预应力筋的保护层厚度，按本标准表3 ．3 ．5 执行。F¤ò©p bbs.3c3t.com *Ý,d3 ．3 ．6 ．2* 当构件厚度小于0 ．5m 时，预应力筋的混凝土保护层最小厚度应为2 ．5 倍预应力筋直径，但不得小于50mm 。F¤ò©p bbs.3c3t.com *Ý,d3 ．3 ．7* 淡水环境受力钢筋的混凝土保护层最小厚度应符合表3 ．3 ．7 的规定。F¤ò©p bbs.3c3t.com *Ý,d淡水环境主筋混凝土保护层最小厚度(mm) 表3 ．3 ．7 F¤ò©p bbs.3c3t.com *Ý,d建筑物F¤ò©p bbs.3c3t.com *Ý,d
所处环境F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水上区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水位F¤ò©p bbs.3c3t.com *Ý,d
变动区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水下区F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 水汽积聚F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 不受水汽积聚F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 北方F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 40F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 30F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 40F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 25F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 南方F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 40F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 30F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 30F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
| 25F¤ò©p bbs.3c3t.com *Ý,d F¤ò©p bbs.3c3t.com *Ý,d
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注：①箍筋直径超过6mm 时，保护层厚度应按表中规定增加5mm 。F¤ò©p bbs.3c3t.com *Ý,d3 ．3 ．9 水位变动区有抗冻要求的混凝土，其抗冻等级不应低于表3 ．3 ．9 的规定。F¤ò©p bbs.3c3t.com *Ý,d水位变动区混凝土抗冻等级选定标准F¤ò©p bbs.3c3t.com *Ý,d表3 ．3 ．9 F¤ò©p bbs.3c3t.com *Ý,dF¤ò©p bbs.3c3t.com *Ý,dF¤ò©p bbs.3c3t.com *Ý,d........... F¤ò©p bbs.3c3t.com *Ý,d
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