凯悦型钢柱方案(终稿).docVIP

农业科技大厦暨凯悦国际大厦工程 型钢砼柱施工方案 编 制： 审 核： 批 准： 青岛建设集团置业分公司 二○○七年六月 目 录 1. 工程概况 ·······························································3 2. 方案选择 ·······························································6 2.1型钢柱制作加工 2.2型钢柱安装 2.3型钢柱砼浇筑 3. 施工程序 ·······························································7 3.1 施工工序 4. 主要施工工艺及质量标准 ············································7 4.1 型钢柱制作加工 ···················································7 4.2地脚螺栓预埋 ·······················································8 4.3型钢柱吊装····························································9 4.4钢筋工程 ·························································10 4.5模板工程 ·························································12 4.6砼工程 ························································14 5. 资源计划 ·······················································15 6.技术措施 ····················································16 6.1 质量保证措施 ···················································16 6.2 安全保证措施 ····················································17 6.3 环境保护及文明施工················································18 6.4 雨季施工措施························································18 ７. 编制依据 ····························································18 1、工程概况 农业科技大厦暨凯悦国际大厦工程型钢柱位于公寓楼部分，共计16根，。型钢柱基础位于负二层顶框架梁、柱交接处，具体型钢柱标高和位置如下图表示： 型钢柱规格、长度及重量：型钢柱为十字型，主材为Q345B级钢，栓钉为Q235级钢，焊缝要求一级、二级。型钢柱长69.6m，标准节每三层一节，每节重约3.5T；经计算型钢柱总计重约500T，总计长度1110m。 型钢柱顶标高为63.4m，底座标高为-6.25m，基底至型钢柱顶最大距离为69.6m。 2. 方案选择 2.1 型钢柱制作加工 选择有资质、有信誉的厂家，在工厂加工制作完成后运输至现场。 由于第一节重约5.6T，经与设计沟通，变更为两节，每节2.8T，各柱均能满足塔吊吊装要求。第二节每节重约5.5T，经与设计沟通，变更为两节2.75T，各柱均能满足塔吊吊装要求。标准节每节型钢柱重约3.5T，本工程2-A轴线四支柱塔吊无法吊装，经与设计沟通，该型钢柱按两层一节加工安装，每节重约2.25T能够满足塔吊吊装要求。 2.2型钢柱的安装 2.2.1地脚螺栓的选择 为确保型钢柱安装、校核的精确性，在吊装型钢柱以前，在独立柱基位置预埋地脚螺栓。 具体为：采用直径为42 mm的地脚螺栓预埋，材质为Q235，长度1200mm。 2.2.2型钢柱吊装 吊装根据现场实际情况采用塔吊吊装方式。 2.3 型钢柱砼浇筑。 2.3.1第一节型钢柱施工： 第一段：预埋地脚螺栓；第二段: 砼浇筑至梁底标高位置；第三段：砼浇筑至楼板上标高位置；第四段：吊装第一节型钢柱节压力注CGM高强无收缩灌浆料。 2.3.1第二节及上部各节型钢柱施工： 第一段：第二节或标