ICS 93.040 CCS P 28 34 安徽省 地方 标准 DB34/T 4648—2023 钢结构桥梁顶推施工技术规程 Technical specifications for incremental launching construction of steel structure bridge 2023 - 12 - 18发布 2024 - 01 - 18实施 安徽省市场 监督管理局 发布 DB34/T 4648 —2023 I 目次 前言 ................................ ................................ ................ III 1 范围 ................................ ................................ ............... 1 2 规范性引用文件 ................................ ................................ ..... 1 3 术语和定义 ................................ ................................ ......... 1 4 基本规定 ................................ ................................ ........... 2 5 顶推方案设计 ................................ ................................ ....... 3 一般规定 ................................ ................................ ....... 3 顶推工艺选择 ................................ ................................ ... 4 顶推体和导梁设计 ................................ ............................... 5 滑动系统设计 ................................ ................................ ... 5 动力系统设计 ................................ ................................ ... 7 控制系统设计 ................................ ................................ ... 9 支承系统设计 ................................ ................................ ... 9 防护系统设计 ................................ ................................ .. 10 6 顶推计算 ................................ ................................ .......... 11 一般规定 ................................ ................................ ...... 11 作用 ................................ ................................ .......... 11 分项系数 ................................ ................................ ...... 12 作用效应组合 ................................ ................................ .. 13 顶推体和导梁计算 ................................ .............................. 13 支承系统计算 ................................ ................................ .. 14 顶推力计算 ................................ ................................ .... 14 7 顶推施工 ................................ ................................ .......... 15 一般规定 ................................ ................................ ...... 15 施工程序 ................................ ................................ ...... 15 施工准备 ................................ ................................ ...... 16 基础及顶推平台施工 ................................ ............................ 16 导梁安装与拆除 ................................ ................................ 16 步履式顶推 ................................ ................................ .... 16 滑移式顶推 ................................ ................................ .... 16 拖拉式顶推 ................................ ................................ .... 17 落梁 ................................ ................................ .......... 17 支架拆除 ................................ ................................ ..... 17 8 施工监控 ................................ ................................ .......... 17 一般规定 ................................ ................................ ...... 17 顶推施工状态监测与控制 ................................ ........................ 18