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1、2.钢筋绑扎n1.钢筋绑扎连接 n 钢筋绑扎安装前，应先熟悉施工图纸，核对钢筋配料单和料牌 ，研究钢筋安装和与有关工种配合的顺序，准备绑扎用的铁丝、绑 扎工具、绑扎架等。 钢筋绑扎一般用1822号铁丝，其中22号铁丝只用于绑扎直径12mm 以下的钢筋。 n(1)钢筋绑扎要求n 1)钢筋的交叉点应用铁丝扎牢。 2)柱、梁的箍筋，除设计有特殊要求外，应与受力钢筋垂直； 箍筋弯钩叠合处，应沿受力钢筋方向错开设置。 3)柱中竖向钢筋搭接时，角部钢筋的弯钩平面与模板面的夹角， 矩形柱应为45，多边形柱应为模板内角的平分角。 4)板、次梁与主梁交叉处，板的钢筋在上，次梁的钢筋居中，主 梁的钢筋在下；当有圈
2、梁或垫梁时，主梁的钢筋应放在圈梁上。主 筋两端的搁置长度应保持均匀一致。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.(2)钢筋绑扎接头 同一构件中相邻纵向受力钢筋的绑扎搭接接头宜相互
3、错开，n 绑扎接头数量：在1.3倍搭接长度范围内，梁板墙类 25%，柱类50%。n 钢筋净距S不小于钢筋直径d，且不小于25mm。n 接头位置：距弯折处10d；不在最大弯矩处；Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-20
4、11 Aspose Pty Ltd.保证混凝土保护层的厚度：n受弯构件端头一般为10mm；n室内：梁、柱为25mm（箍筋15mm），板、墙为15mm （分布筋为10mm）；n基础：有垫层35mm；无垫层70mm。n露天或室内高温：构 件C30板、墙、壳35mm25mm15mm梁、柱45mm35mm25mmEvaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Prof
5、ile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 As
6、pose Pty Ltd.2. 绑扎连接n提出几个问题： 同一连接区段内，接头数量的限制？同一连接区段内，接头数量的限制？ 接头位置的要求？接头位置的要求？ 对搭接长度的要求？对搭接长度的要求？梁钢筋绑扎钢筋绑扎优质工序Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty
7、 Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.3. 机械连接n（1）套筒冷挤压钢筋接头：n 普通套筒冷挤压
8、钢筋接头是一种机械接头。其工艺是通过 挤压套在两钢筋对接处的钢套筒，使之变形并与钢筋的横肋啮合， 从而将两根钢筋连接起来。n 该技术适用于工业与民用建筑钢筋混凝土结构及一般构筑 物的梁、板、柱、墙及基础的 1640HRB335级钢筋的现场连接施 工。可连接同径或异径竖向斜向或水平钢筋，也可用作预埋钢筋接 头。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Pr
9、ofile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.套管式挤压连接的工作原理(视频)Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copy
10、right 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Create
11、d with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（2） 螺纹连接n1）普通锥螺纹钢筋接头n 是将待连接的两根钢筋端头制成锥形螺纹通过一个两端带有 锥形内螺纹的连接套按规定的力矩值把两根钢筋连接成一体。n 该技术适于工业与民用建筑钢筋混凝土结构及一般构筑物的 梁、柱、
12、板、墙及基础的 1640HRB335、HRB400级钢筋的现场连接 施工。可连接同径或异径竖向、斜向或水平钢筋，也可用作预埋钢筋接 头。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Ev
13、aluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.n2）直螺纹钢筋连接技术n 具有接头强度高、与母材等强、连接速度快、性 能稳定、应用范围广、操作简便、用料省等特点；对提高 建筑工程质量、节约材
14、料、提高施工速度具有重要意义。n 等强直螺纹接头适用于各种抗震设防的混凝土结 构工程，对要求充分发挥钢筋强度和延性的重要结构应优 先选用等强直螺纹接头。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose P
15、ty Ltd.镦粗直螺纹钢筋连接技术生产工艺： 钢筋端部镦粗 切削直螺纹 用连接套筒对接钢筋Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.(3)钢筋机械连接接头质量检查与验收n工程中应用
16、钢筋机械连接时，应由该技术提供单位提交有效的检验报告。n钢筋连接工程开始前及施工过程中，应对每批进场钢筋进行接头工艺检验，工艺检验应符合设计图纸或规范要求。n现场检验应进行外观质量检查和单向拉伸试验。n接头的现场检验按验收批进行。n对接头的每一验收批，必须在工程结构中随机截取3个试件作单向拉伸试验，按设计要求的接头性能等级进行检验与评定。n在现场连续检验10个验收批。n外观质量检验的质量要求、抽样数量、检验方法及合格标准由各类型接头的技术规程确定。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2
