人工挖孔扩底桩施工方案(附网络计划图-通过专家论证).doc

-精品word文档 值得下载 值得拥有-本页为作品封面，下载后可以自由编辑删除，欢迎下载！ 精 品文档1【精品word文档、可以自由编辑！】目 录第一章 工程概况21.1编制依据21.2工程概况21.3 现场地质情况9第二章 施工总体部署102.1总体目标102.1. 1工程质量102.1.2工程进度112.1.3安全生产112.1.3文明施工112.1.4环境保护112.2施工准备112.2. 1初期首要准备工作112.2. 2搭建临设112.2.3施工临时用水122.2.4施工临时用电122.2.5技术准备142.2.6现场施工准备15第三章 施工方案153.1施工工艺流程153.2施工段划分及施工顺序163.3施工场地布置17第四章 主要施工方法184.1测量放线184.1.1平面控制网的测设与桩孔中心控制184.1.2高程控制184.2孔桩施工方法194.2.1孔桩开挖施工194.2.2人工挖孔桩成孔及验收204.2.3桩身钢筋笼安装204.2.4桩身砼浇灌204.3桩基检测214.3.1低应变法224.3.2声波透射法224.4降、排水措施224.5挖孔桩周边安全防护24第五章 项目部人员组织、劳动力组织25第六章 施工难点，施工措施276.1 施工难点处理措施276.1.1超深孔桩开挖措施276.1.2 施工措施306.2超深孔桩开挖方法336.3孔桩遇见淤泥、流砂、溶洞处理措施336.4 溶洞处理措施356.5孔内排水措施356.7孔内送排风措施366.8雨季孔桩开挖措施376.9地勘孔桩编号与施工图编号不一致处理措施37第七章 机械成孔改人工挖孔桩分析及施工措施38第八章 材料、设备投入计划398.1材料准备398.2施工机械投入计划40第九章 工期安排及保证措施419.1工期安排419.2工期保证措施41第十章 质量标准及保证措施4110.1质量控制4110.2质量保证措施41第十一章 安全文明施工4311.1 安全操作措施4311.2安全管理措施4511.3文明施工管理4511.3.1施工现场安全纪律4511.3.2施工现场环境管理4611.3.3现场材料管理4711.3.4作业现场管理47第十二章 应急预案4712.1安全事故紧急处理预备措施4712.1.1基本装备4712.1.2专用装备4712.1.3成立安全救护小组4812.1.4事故发生紧急处理措施4812.1.5安全事故紧急处理预备方案49附件一：人工挖孔桩编号图附件二：人工挖孔桩超深孔位图附件三：机械成孔布置图附件四：人工挖孔超深孔及机械成孔桩柱状图附件五： 工期进度计划附件六： 施工平面布置等附件七：特种作业人员证件复印件附件八：场地内排水平面布置图附件九：孔桩护壁验算附件十：孔桩超量预算附件十一：专家论证纪要、专家证件xx医学院xx校区公共实验楼（实验室及附属工程）孔桩开挖专项方案第一章 工程概况1.1编制依据1、建筑地基基础工程质量验收规范GB50202-2002；2、建筑桩基检测技术规范JGJ106-2003；3、建筑工程施工质量验收统一标准GB50300-2013；4、工程测量规范GB50026-2007；5、混凝土结构工程施工质量验收规范GB50204-2002（2011年版）；6、建筑地基基础检测规范（DBJ 15-60-2008）；7、建筑施工图、结构施工图8、岩土工程勘察报告9、建筑桩基检测技术规范JGJ106-20039、其他有关法律、法规。1.2工程概况工程名称：xx医学院xx校区公共实验楼（实验室及附属工程）工程地点：xx医学院xx校区内工程参建单位：建设单位：xx医学院设计单位：xxxx设计建设有限公司地勘单位：xxxx勘测院监理单位： xx建工监理有限公司审计单位：xxxx咨询有限公司施工单位：xxxx工程有限公司本工程为xx医学院xx校区公共实验楼（实验室及附属工程），该栋房屋主要是满足学生教学实验。建筑物呈扇形靠图书馆为正立面，正立面外墙装饰有幕墙、陶土干挂石材，背立面有环形走廊体现整个建筑物的现代感、时代感，如下图：拟建建筑物为多层建筑地上五层，建筑面积43706其中地下一层建筑面积9932。结构形式框架，抗震等级三级，负一层为车库（平时）人防（战时），一层为阶梯教室、教研室，二五层为阶梯教室、普通教室、教研室。负一层5.1米建筑层高，一层5.4米，二五层4.5米，建筑物总高度23.4米。拟建建筑物地下室底板厚度300mm，底板上有400mm的结构垫层。一层底板厚250mm，一层上有环形通道并有人行道等如下图所示：本工程建筑采用端承桩作为基础，根据设计施工图内容共计285个孔桩，其中设计12个孔桩为机械成孔，其余均为人工挖孔桩。我项目部认为取消机械成孔全部采用人工挖孔桩成孔，孔桩护壁混凝土强度等级为C30，孔桩填芯混凝土强度等级C30。根据岩土工程勘察报告人工挖孔桩有勘察报告概况如表1.2-1。表1.2-1 人工挖孔桩设计概况表序号地勘孔号（ZK）遇见持力层标高(m)设计孔口标高（m)孔桩部位新近回填土厚度（m）地勘测量时原始地面高度（m)地勘报告内新近回填土厚度（m）桩身设计长度（m）自编孔号11844.7857.5858.10.513.8122845.2857.5857.80.813.3233842857.50.8857.20.516.5344845.5857.50.2857.3013455843857.5858.30.815.5566843.8857.5858.30.514.7677845857.5857.8013.5789842.9857.50.8856.7015.610910847.8857.50.2857.3010.7111011845.8857.50.9856.6012.7121112847.5857.51.2856.3011131213844.2857.51.8855.7014.3141315847.4857.52.3855.2011.1161416846.6857.53854.5011.9171518847.1857.53.2854.3011.4191619849.1857.53.2854.309.4201720853.3857.53854.505.2211821847.7857.52.4855.1010.8221922842.1857.52.9854.6016.4232023844857.52.5855014.5242124838857.53.3854.2020.5252225844857.52.8854.7014.5262326844.2857.52.8854.7014.3272427847.7857.51.3856.2010.8282528846.5857.52.4855.1012292629843.4857.51.8855.7015.1302730847.1857.51.8855.7011.4312831841.6857.50.4857.1016.9582932842.6857.50.3857.2015.9573033842.6857.51.2856.80.515.9563134840.4857.51.6856.40.518.1553235840.4857.51.1856.4018.1543336845.4857.52.3855.2013.1363437848.3857.52.1855.4010.2353538845857.52855.5013.5343639844.8857.51.4856.1013.7333740842.7857.51.3856.2015.8323841839.5857.53.1854.4019643942841.2857.52.7854.8017.3654044848.5857.52.5855010684145842.3857.52.6854.9016.2694246846.4857.53.3855.2112.1704347846.2857.53855.5112.3714448846857.53.4855.31.212.5724549846.3857.52.9854.6012.2734650847.3857.53854.5011.2744751847857.52.6854.9011.5814853849.9857.52.9854.608.6834954850.3857.52.7854.808.2845055848.9857.52.6854.909.6855156846.7857.52.5855011.8865257840.2857.52.6855.40.518.3875358844857.53.5854.80.814.5885459845.3857.53855.5113.2895560847.2857.52855.5011.3905661842857.51856.5016.5595762842.8857.50.8856.7015.7605863842.4857.53.8853.7016.1615964838.7857.53.8853.7019.8626065837.8857.54.1853.4020.7636170845.6857.52.9855.81.212.9916271841.5857.52.2855.3017926372845.4857.51.9855.6013.1936473841.7857.51.6855.9016.8946574844.6857.51.6855.9013.9956678840.7857.51.2856.3017.81296779841.7857.52.3855.70.516.81286880842857.54853.5016.51276981839.9857.54.1853.4018.61267082836.7857.54.2853.3021.81257183838.2857.54.3853.2020.31247284841.3857.54.2853.3017.21237385840.9857.54.6852.9017.61227488842.8857.54.4853.1015.71197589845.4857.53.9853.6013.11187690842.6857.53.6853.9015.91177791844.8857.53.1854.4013.71167892844.1857.53.6853.9014.41157993845.4857.53.9853.6013.11148094845.2857.53.8853.7013.31138196844.8857.53.2854.3013.71128297846.1857.53.4854.1012.41118398845.7857.53.1854.4012.81108499845.3857.52.2855.3013.210985100845.8857.52.2855.3012.710886101850857.52.4855.108.510787102845857.52.5855.50.513.510588103845.2857.52.6855.40.513.310489105842.4857.53.1854.90.516.110390106842857.53855.5116.510291107845.9857.53.6855.41.512.610192108842.2857.52.1855.4016.310093109839.4857.52.1855.4019.19994110843.3857.51.7855.8015.29895111844857.51.7855.8014.59796112844.7857.51.8855.7013.89697129842.6857.53.5854.60.615.913098130845.1857.54.5853013.413199131841.4857.54.6852.9017.1132100132839.6857.54.9852.6018.9133101133839.5857.54.8852.7019134102134842.9857.56.6850.9015.6135103135844.9857.56.4851.1013.6136104136843857.55.8851.7015.5137105137840.1857.55.1852.4018.4138106138843.9857.57.2852.82.514.6139107139844.3857.54.7852.8014.2140108140843.2857.54.1853.4015.3141109141843.2857.53.8853.7015.3142110142847.1857.53.7853.8011.4143111143846.5857.54853.5012144112144844.1857.53.2854.3014.4145113145844.3857.52.7854.8014.2146114146841.7857.52.3855.2016.8147115147842857.52.2855.3016.5148116148845.6857.52.6854.9012.9149117149843.3857.53.4855.1115.2150118150841.3857.53.2854.3017.2151119151841.1857.55.8854.12.417.4152120152842.4857.52.1855.4016.1153121153840.9857.55.6855.43.517.6154122154842.2857.52.4855.1016.3155123155842.6857.52.4855.1015.9156124156838.7857.52.5855019.8157125157839.7857.54.8853.7118.8193126158841.9857.55.9851.6016.6190127159845.2857.56.5851013.3189128160843.2857.56.8850.7015.3185129161844.5857.56.7850.8014184130162843.4857.56.9850.6015.1183131163844.8857.56.6850.9013.7182132164844.8857.56.2851.3013.7181133165841.8857.55.6851.9016.7180134166839.6857.54.9852.6018.9179135167845.3857.55852.5013.2178136168844.9857.54.6852.9013.6177137169845.7857.53.9853.6012.8176138170845.4857.53.9853.6013.1175139171844.6857.54853.5013.9174140172844.2857.52.9854.6014.3173141173842.3857.52.9854.6016.2172142174843857.52.2855.3015.5171143175843.3857.52.3855.2015.2170144176844.8857.52.6854.9013.7169145177842857.53854.5016.5168146178835.2857.53.8853.7023.3167147179841.5857.55.4854.62.517166148180842.7857.53.6853.9015.8165149181840.5857.52.3855.2018164150182841.1857.54.1854.91.517.4160151183836.4857.53.88551.322.1159152184841.8857.54.2855.3216.7158153185841.6857.54.9852.6016.9194154186843.4857.54.3853.2015.1195155188843.4857.57.4850.1015.1196156189843857.57.5850015.5197157190841.9857.56.8850.7016.6198158191842.3857.56.5851016.2199159192843.9857.56.5851014.6200160193839.8857.56.5851018.7201161194841.2857.55.1852.4017.3202162195840.5857.55852.5018203163196837.4857.55.1852.4021.1204164197837.9857.54.1853.4020.6205165198841.3857.53.8853.7017.2206166199843.8857.53.9853.6014.7207167200841857.53.2854.3017.5208168201842.1857.52.8854.7016.4209169202841857.52.5855017.5210170203841.6857.52.4855.1016.9211171204844857.53.1854.4014.5212172205845.7857.53.3854.2012.8213173206842.3857.53.7853.8016.2214174207844857.53.3854.2014.5215175208843.7857.53.1854.4014.8216176209839857.53.9855.11.519.5217177210833.8857.54.2854.81.524.7218178211841.3857.54.2855.3217.2219179212843.4857.54.2855.3215.1220180217839.7857.56.6850.9018.8247181218839.4857.55.3852.2019.1246182219840.4857.52.6854.9018.1233183220842.5857.53.2854.3016232184223843.9857.56.8850.7014.6257185224837.5857.57.4850.1021256186225838.5857.57.8849.7020255187226843.6857.57.4850.1014.9254188227842.9857.56.7850.8015.6253189228842.5857.56.1851.4016250190229840857.57.8851.51.818.5249191230841.4857.56.7852.61.817.1248192231840.9857.55.4852.1017.6245193232842.9857.55.4852.1015.6244194233841.9857.55.1852.4016.6243195234841.6857.54.1853.4016.9242196235838.8857.53.9853.6019.7241197236840.6857.53.4854.1017.9238198237843857.53.2854.3015.5237199238840.4857.52.7854.8018.1236200239841.4857.52.8854.7017.1235201240840.1857.52.7854.8018.4234202241843.1857.52.8854.7015.4231203242843.7857.53854.5014.8230204243840.2857.53.8853.7018.3229205244838.5857.53.7853.8020226206245842.4857.53.6853.9016.1225207246840.5857.55.5854218224208247842.8857.54.2854.81.515.7223209248843.6857.54.1854.4114.9222210249840.8857.54.5854.51.517.7221211250841.9857.57.4850.1016.6258212251838.3857.57.7849.8020.2259213252841.5857.57.3850.2017260214253841.2857.57850.5017.3261215254842.6857.511.2850.84.515.9262216255840.7857.56851.5017.8263217256840.3857.57.5851.51.518.2264218257839857.57.1851.81.419.5265219258841857.55.5852017.5266220259838.5857.55.5852020267221260839.6857.53.7853.8018.9268222261840.8857.54853.5017.7269223262841.7857.53.9853.6016.8270224263841.5857.53.4854.1017271225264841.5857.53.5854017272226265838.7857.53.1854.4019.8273227266839.6857.53.4854.1018.9274228267840.1857.53.2854.3018.4275229268841.4857.53.6853.9017.1276230269842.6857.53.7853.8015.9277231270842.2857.53.8853.7016.3278232271839.3857.53.7853.8019.2279233272843.7857.53.6853.9014.8280234273842.7857.55.5854215.8281235274840.5857.55.2853.81.518282236275843.1857.54.7853.8115.4283237276847.1857.54.4854.1111.4284根据查阅地勘资料超过16m孔桩共计113个，没有勘察资料孔桩共计48个。人工挖孔桩编号图见附件一，人工挖孔桩超深孔位图见附件二，机械成孔布置图见附件三，人工挖孔超深孔及机械成孔桩柱状图见附件四。人工挖孔桩按深度共计分为13种型号如下：1.3 现场地质情况在岩土工程勘察报告中拟建工程概况“拟建公共实验楼（实验室及附属工程）场地处于开挖回填阶段”，且关于地形地貌描述“孔口高程在849.80858.30之间，相对高差为9.00m”。 本工程地勘单位在勘测时工程项目场地内为原始丘陵缓坡地带，勘测结束后建设单位组织挖填作业，待我单位进场施工，场地地形地貌与原地勘勘测时地形发生改变。拟建项目实测实量中，发现场地内有大量新近回填土。经我单位平基作业，按设计标准平基标高为857.35m。所有孔桩开挖原始高程为857.35m。新近回填土高度011M。地勘单位勘测时所出岩土工程勘察报告可知，场地地层按其成因自上而下分为素填土、红粘土和强风化及中风化白云岩组成。场地地下水由第四系土层松散孔隙水（上层滞水）和下伏基岩岩溶裂隙水。其中第四系松散孔隙水主要赋存于素填土层。岩土工程勘察报告内地基均匀性评价如下：素填土层：为新近回填，未完成自重固结，厚度不均匀，在0.004.50m之间承载力低。即地基均匀性较差。红粘土层：黄色，土质均匀，致密状。分布不均匀，分布厚度1.0013.30m，地基均匀性差。强风化白云岩：浅灰色，中厚层状。分布均匀连续，力学强度相对较低。中风化白云岩：浅灰色，中厚层状。分布均匀力学强度高，以该层为本建筑物的持力层。素填土层无力学性能，红粘土层承载力特征值fak=165kpa，强风化白云岩承载力特征值fak=400kpa，中风化白云岩承载力特征值fak=3600kpa。机械成孔共计12个孔号如下：序号地勘孔号（ZK）桩身设计长度（m）121024.7217823.33183