基坑支护土方工程方案

基坑支护土方工程方案

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 目 录
 1.编制依据............................................................... 3
 1.1 岩土工程勘察报告 ................................................. 3
 1.2 相关技术规范..................................................... 3
 1.3 国家、地方有关法规 ............................................... 3
 1.4 施工图纸及有关文件 ............................................... 4
 2.工程概况............................................................... 4
 2.1 工程概况 ......................................................... 4
 2.2 工程地质条件..................................................... 4
 3.支护方案设计及施工参数................................................. 5
 3.1 工程重点和难点分析 ............................................... 5
 3.2 基坑支护方案 ..................................................... 7
 3.3 设计要求 ........................................................ 21
 3.4 施工内容和主要工程量............................................ 21
 3.5 施工工艺选择 .................................................... 21
 4.施工部署.............................................................. 22
 4.1 组织机构及人员职责 .............................................. 22
 4.2 劳动力配备 ...................................................... 27
 4.3 主要施工顺序 .................................................... 27
 4.4 主要机械设备、检测设备、材料 .................................... 28
 5.土方开挖.............................................................. 31
 5.1 施工准备及措施.................................................. 31
 5.2 作业条件........................................................ 32
 5.3 土方开挖方案.................................................... 32
 5.4 出土保证措施 .................................................... 33
 5.5 质量措施 ........................................................ 34
 5.6 安全要求和措施 .................................................. 34
 6.基坑支护施工流程和技术要求............................................ 34
 6.1 测量方案........................................................ 37
 6.2 护坡桩施工...................................................... 40
 6.3 人工挖孔、灌注混凝土成桩........................................ 47
 6.4 锚杆施工........................................................ 51
 6.5 桩间土护壁施工 .................................................. 55
 6.6 冠梁施工 ........................................................ 56
 6.7 钢梁加工 ........................................................ 57
 7.施工进度计划.......................................................... 59
 7.1 施工进度计划 .................................................... 59
 7.2 工期保证 措施 .................................................... 59
 8.质量控制.............................................................. 61
 8.1 质量管理机构 .................................................... 61
 8.2 人员控制 ........................................................ 61