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目录 摘要·······································································3 1 高墩滑模施工工艺 1.1、滑模组装··························································5 1.2、滑模提升··························································5 1.3、模板拆除··························································5 1.4、线型控制··························································5 2 高墩翻模施工工艺 2.1、工艺特点···························································5 2.2、工艺原理···························································5 2.3、工艺流程···························································5 3 高墩自爬模施工工艺 3.1、液压自爬模概述····················································6 3.2、液压自爬模板的特点···············································6 3.3、液压自爬模板的组成················································6 3.4、模板系统···························································7 3.5、钢筋工程···························································7 3.6、混凝土工程·························································8 3.7、工艺流程··························································9 绪论:滑模施工因其进度快、节省投资且特别适用于高桥墩施工而受到青睐。采用滑升模板施工，不仅可以提高施工质， 还可以降低施工成本 ， 缩短了工期 ， 加快工程进度 。 桥梁高墩墩身施工工艺 一 高墩滑模施工工艺 桥梁工程高墩身液压滑升模板施工工艺采用高墩桥梁方案道路跨越深沟宽谷时的有效措施，既可以保证线路顺畅，又可以节省投资 。 近些年来，滑模施工技术在我国桥梁建中得到广泛应用。 1 滑模组装 (1) 在桥墩基础顶面上将混凝土凿毛清洗，接长竖向主筋，绑扎提升架横梁以下的横向结构筋。搭设枕木垛，定出桥墩中心线。 (2) 在枕木垛上按设计要求安装模板和提升架，将套管固定在提升架横梁下部。继续安装操作平台、千斤顶及顶杆等。顶杆需穿过千斤顶心孔到达基础顶面。 (3) 提升整个系统，撤去枕木垛，将模板下落就位，再安装其他设施。注意套管底部与基础表面要接触紧密，并用砂浆将周围围起来，以免灰浆漏进套管内。外吊脚手架应在滑模提升适当高度后安装。 2 浇注墩身混凝土 滑模施工宜采用低流动或半干硬性混凝土 ， 坍落度控制在 6 ～ 8cm 。 分层均匀对称浇注混凝土 ，分层浇注厚度为 20 ～ 30 cm ， 浇注后混凝土表面距模板上缘的距离宜控制在 10 ～ 15 cm 。 混凝土浇筑应在前一层混凝土凝结前进行 ， 同时采用插入式振捣器进行捣固 。 振捣器插入前一层混凝土的深度不应超过 5 cm ， 避免振捣器触及钢筋 、顶杆和模板，禁止在模板滑升时振捣混凝土。混凝土出模强度应控制在 0 ． 2 ～ 0 ． 4 MPa 范围内，以防止坍塌变形。出模 8h 后开始养生。 3 滑模提升 在滑模施工的整个过程中 ， 模板的滑升可分为初升 、 正常滑升和终升 3 个阶段 。 (1) 初升 。 最初灌注的混凝土的高度一般为 60 ～ 70cm ，分 2 ～ 3 层浇注，约需 3 ～ 4 h ，随后即可将模板缓慢提升 5cm ，检查底层混凝土凝固的状况 。 若混凝土已达到 0 ． 2 ～ 0 ． 4 MPa 的脱模强度