某市烟草人工挖孔桩施工方案

贵州建工集团第四建筑工程有限责任公司 专项施工方案 毕节市烟草公司物流配送中心及仓库项目二标孔桩专项施工方案程序签 名职务/职称日 期编制专业负责人审核项目技术负责人公司技术部门主任/工程师公司安全部门部长/工程师批准总工程师高级工程师贵州建工集团第四建筑工程有限责任公司一、编制依据3二、工程概况32.1工程简况32.2本工程各参建单位42.3基础工程设计概况42.4场地水文地质条件142.5 人工挖孔桩施工平面布置图212.6施工要求212.7技术保证条件21三、施工计划223.1 施工进度计划233.2设备计划233.3 材料计划24四、施工工艺技术244.1 工艺流程244.2测量放样264.3 孔桩土方开挖274.4 护壁钢筋284.5护壁模板284.6 护壁混凝土284.7孔桩石方的爆破294.8中风化石灰岩终孔的施工294. 9 桩钢筋笼的制作安装294. 10 浇筑桩芯混凝土304.11 检查验收30五、施工安全保证措施325.1 组织保障335.2、技术措施345.3、应急预案405.4、监测监控425.5、文明施工措施44六、劳动力计划46七、相关图纸46一、编制依据 1、毕节市烟草公司物流配送中心及仓库项目基础施工图纸。 2、深圳市勘察有限公司提供的本工程地勘资料。 3、国家现行标准建筑地基基础设计规范GB500007-20024、国家现行标准混凝土结构设计规范GB50010-20105、国家现行标准建筑结构荷载规范GB50009-20016、国家现行标准建筑抗震设计规范GB50011-20107、国家现行标准贵州建筑地基基础设计规范DB22/25-20048、施工现场临时用电安全技术规范（JGJ46-2005）9、建筑机械使用安全技术规范（JGJ33-2001）10、建筑桩基技术规范（JGJ942008）11、建筑工程施工质量验收统一标准（GB503002001）10、贵州建工集团编制的人工挖孔桩施工施工工艺标准11、建筑基桩检测技术规范（JGJ106-2003）12、建筑施工安全检查标准（JGJ59-2011）2.1工程简况工程名称：烟草公司新建烟叶仓库项目建设地点：毕节市鸭池镇营脚村，毕节地区现代烟叶物流中心西面，紧临贵毕公路。该项目总建设规模8.4万平方米，用地面积134074平方米，建筑设计使用年限：50年。主要结构类型：全浇混凝土框架结构。建筑结构安全等级为二级。基础形式：孔桩基础。2.2本工程各参建单位建设单位：毕节市烟草公司设计单位：云南省建筑设计研究院勘察单位：深圳市勘察研究院有限公司监理单位：贵州宇建建设监理有限公司施工单位：贵州建工集团第四建筑工程有限责任公司2.3基础工程设计概况本工程共有孔桩450个，圆桩桩径为9001200mm，。孔桩最小间距为5.1m，桩端入岩深度不小于1.0D，孔桩护壁砼及填心砼标号为C30，护壁为倒挂式护壁，上口厚度为150mm，下口厚度50mm,（具体做法见附图）。桩端支承于中风化石灰岩，承载力特征值为4000KPa。 根据地勘报告显示：最长桩身30m，其中有200个孔桩深度超过16米（详见人工挖孔桩统计表）。根据住房和城乡建设部建质【2009】87#文件规定的“开挖深度超过16米的人工挖孔桩工程”，需要组织专家论证。 B1库人工挖孔桩统计表孔号地勘编号板底高程(M)持力层层顶高程(M)孔深(m)备注1ZK3631476.261481.767.6 2ZK3641476.311481.817.33ZK3651467.961473.4615.54ZK3661470.591477.1911.55ZK3671456.091461.79276ZK3681466.301472.0416.97ZK3691461.111466.7122.38ZK3701457.321463.8225.29ZK3711457.731463.2325.810ZK3721462.351468.042111ZK3731470.051475.651612ZK3741475.221480.527.513ZK3751477.621483.1910.714ZK3761479.211487.21215ZK3771477.341482.846.216ZK3781472.591477.891117ZK3791463.221468.7220.118ZK3801463.651468.9519.819ZK3811461.861467.0621.820ZK3821463.491468.892021ZK3831459.621465.1223.822ZK3841463.341468.6420.323ZK3851664.241469.2419.424ZK3861462.351467.4520.525ZK3871471.851477.651026ZK3881472.481477.581027ZK3891478.621485.12428ZK3901473.021478.021129ZK3911465.521470.921830ZK3921466.571471.9716.831ZK3931457.441462.4426.332ZK3941463.411468.4120.333ZK3951467.181472.2816.434ZK3961465.621470.4218.235ZK3971465.851471.4417.336ZK3981468.751474.2514.637ZK3991472.471477.971138ZK4001474.841480.348.539ZK4011473.521479.029.540ZK4021471.481477.2811.841ZK4031471.131476.3312.742ZK4041466.301471.3417.643ZK4051461.701467.3021.544ZK4061460.961466.1622.645ZK4071463.341468.6420.146ZK4081468.421473.9214.847ZK4091469.981475.2813.548ZK4101472.631478.0310.849ZK4111471.271476.871250ZK4121473.671479.279.551ZK4131475.631481.037.452ZK4141477.561485.16353ZK4151475.841481.347.854ZK4161471.411476.8112.255ZK4171472.331477.831156ZK4181477.541482.546.257ZK4191468.72 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