fk243 470拱式通道施工方案.doc

Last week, our economic work Conference held today, held the County's rural areas for work and "five water treatment", "three to split" Conference, which this year was a matter of "Thirteen-Five" important meeting of our County's economic and social development. The main task of the meeting was, on rural work and conscientiously implement the Central, provincial and municipal "five water treatment", "three to split" series of important conferences, learn from the past, study deployment priority tasks this year. Just now, the XXX Deputy head and Deputy County magistrate, respectively, on the work of the XX was fully deployed, and put forward specific measures and requirements about is in place. County Environmental Protection Bureau, the XX town, town of XX 3 units for a position statement, resounding, demonstrated determination and confidence. Conference also recognition has advanced representative, this, I also representative County, and County Government, to by recognition of advanced said warm of congratulated! to rural, and water and three modified a split front General cadres workers extend sincere of greeting! following, I again told five points views: a, and deepening awareness, further enhanced work of sense and urgency since party of 18 session v plenary proposed has "innovation, and coordination, and green, and open, and shared" five big development concept Hou, rural and environment governance work can said was upgrade to has more high of strategy level, is " Thirteen-Five "build well-off a top priority task. XX, County besides lingxi, Longgang, jinxiang, the Treasury, the hills, several industrial town outside the city centre, is basically belong to other rural areas, area, the vast rural population. Same time, the current and coming period, is the County into a crucial period of the South Gate of XX beautiful, environmental regulation directly affects the effectiveness of the strategic objectives can not be achieved. Therefore, the focus on rural work and "five water treatment", "three to split", the XX economic and social development has an important role. Last year, through the joint efforts of the County, reform of the agricultural and rural development has made great progress in our County, environmental remediation and achieved initial results. "Three agriculture" agricultural modernization level continues to increase, new 4-level modern agriculture Park, released 20 agricultural leading enterprises above the county level, the County area of 200 acres of land more than eco-leisure, investments of more than 5 million Yuan reached more than more than 100 agricultural projects. Rural development has improved continuously, boutique line 1 completed the beautiful countryside, fine village 17, beautiful rural development conference was held in lingxi peach Lake in the city. Promote comprehensive rural reform, included in the province's building "three in one" system of farmers ' cooperative economic organization first promoting the County. Improvement of farmersK243+470 1-4拱式通道施工方案一.编制依据1、山平高速第十一合同段涵洞施工图纸；2、桥涵施工技术规范、相关规范标准；3、已批准的实施性施工组织设计；4、现场调查资料； 二工程概况K243+470 为1-4m拱式通道，本涵洞为斜交涵，交角为110°，涵长37.93m，地基设计承载力为200KPa。基坑开挖后要求对基底进行强夯处理，襟边为2m，计强夯面积1150m2。基础为C25片石砼整体式基础，用量为1006.71m3，采用M7.5浆砌MU40块石拱涵台身，用量为872.61m3，拱涵采用M7.5浆砌MU50块石拱圈，用量为119.82m3。洞口采用M7.5浆砌MU30片石八字墙身和C30混凝土洞口铺砌。台背回填采用水泥土回填。三.工期计划本涵洞计划开工日期为：2011年3月28日，计划完工日期为：2011年5月10日。四人员及机械配置本分项工程由现场施工由王春锁负责、质量检查由师天香负责、机械设备由范学光负责、试验由常青峰负责，并配备有三名技术人员配合工作。主要现场施工人员包括：钢筋工，模板工，架子工，砼工，普工。人员配置姓 名职 务主要负责工作王春锁施工负责人现场施工的统筹安排常青峰试验负责人负责全部的试验检验工作师天香质检负责人负责对工程质量的监督和检验范学光机械副经理负责机械的合理调配使用赵树刚技术员负责基础施工的技术工作侯光辉技术员负责下部施工的技术工作韩丽君技术员负责盖板预制、现浇施工的技术工作机械设备配置设备名称规格型号数量技术状况拟用何处强夯机2000KN1良好涵洞施工挖掘机3201良好涵洞施工混凝土运输车8立方4良好涵洞施工振动压路机60t1良好涵洞施工电焊机BX3-303良好涵洞施工钢筋切割机3良好涵洞施工吊 车25t2良好涵洞施工推土机1401良好涵洞施工发电机50 KW2台良好涵洞施工五施工工艺5.1施工测量涵洞开工前根据设计进行现场核对，由测量组精确放样，定出涵洞轴线，以轴线为基础，测定基坑和基础的平面尺寸。5.2 基坑开挖基坑开挖采用机械开挖，人工配合刷坡、清底。开挖前由测量人员放出桩位控制线，开挖过程中用水准仪控制坑深。基坑实测项目项次检测项目规定值或允许偏差检查方法和频率1基础宽度（mm）不小于设计每基坑三处2基础长度（mm）不小于设计每基坑三处3基底标高（mm）±50不少于八点4地基承载力（Kpa）不于设计每基坑测一处5轴线偏位（mm）25基坑纵横方向各两点5.3 强夯施工5.3.1施工要点：强夯单击夯击能要求达到2000KN.m，以消除基底土层的湿陷性为原则。基底进行强夯处理时，夯实范围为垫层每边各向外延2米。每遍每点夯实6-8击，夯实3遍，前两遍按3-4m间距跳夯，最后一遍排夯，互相搭接不大于1/2夯痕。主要通过现场确定，夯实后对上部震松的土层碾压至规定压实度。夯实处理完毕，强夯最后两击平均夯沉量要求不大于5cm，否则增加夯实遍数。两遍夯击时间间隔：主要取决于施工时地基土含水量及孔隙水压力消散时间，应根据现场实验确定。起重设备起吊能力应大于等于2倍锤重。5.3.2强夯施工工艺用推土机整平基底，使场地平整具备施工条件。控制基准点和夯点测设，测定区域内的边界控制基准点。用钢尺布设点夯的夯点中心位置并标示。使用40T履带式起重机，夯锤锤底直径2.3m,锤重20t，接索牵引三轴式半自动脱钩器。起重机的吊钩与脱钩器以钢索相连接。脱钩器的吊钩可直接钩住夯锤的吊耳，用订绳索一端连接脱钩器的脱钩反柄，另一端与起重机前部的稳固的销轴连接。按设计要求的单点夯击能量设定落距，脱钩器与起重机的吊钩和脱钩拉连接好之后，在脱钩器的吊钩上，系上钢尺或测绳，提升脱钩器，至一定高度即脱钩器吊钩与地面的高度为落距与夯锤高度之和，此时可以将脱钩器拉索的下端与起重机前部的稳固部位加以牢固的连接。施工机械的平面移动方向，沿场地长边方向开始，退行施工，起重机臂杆左右摆动范围内可覆盖3个排夯点，可一排同时施工，也可退行施工。夯坑填平，第一遍点夯跳夯完成后，用推土机将夯坑推平强夯施工测量：根据需要抽查测量若干夯点的起夯面高程，每一击沉量，以及每遍最终夯沉量，测量应使用经校正好的水准仪，测定同一夯点每击夯沉量时仪器应架设在相同位置和相同高程上。强夯记录：应按统一标准记录，应包括击数、夯沉量（与击数对应）、能级、夯锤重、落距、施工时间、天数等。 强夯法施工工艺框图施工准备 清除表土（挖方段挖至路床）、划夯点强夯机具就位测量夯沉量强夯机具夯击作好夯击记录不合格合格完工验收5.4基础施工5.4.1基本要求所用的水泥、砂、石、水、及混合材料的质量和规格必须符合有关规定的要求，按规定的配合比施工，不得出现空洞现象。5.4.2 模板加工及安装 模板及支架应具有足够的强度，刚度和稳定性，应能承受所浇注混凝土的重力，侧压力及施工中可能产生的各项荷载，并应保证混凝土结构各部尺寸和相互位置的正确。支架的支承部分应安置于可靠的基底上，并应有足够的支承面积和防、排水措施。模板在使用前，须先将模板表面油污、铁锈、表层脱模剂清除干净。模板安装时模板与模板连接牢固，表面平整，相错量不大于1mm。模板在灌注砼前浇水湿润，但不留积水，模板缝隙贴泡沫条，以防漏浆。模板的安装平整光滑，满涂脱模剂，接缝应严密，模板与基底或旧混凝土接触面不得漏浆。模板采用组合型钢模板安装。模板的安装防止模板移位和突出，模板侧面应设置支撑固定。模板安装不能重叠，接缝使用密封胶条粘贴牢固，保证不漏浆。采用优质油料作为模板的脱模剂。脱模剂由专人负责涂刷，用量少，现油光即可，以免油过多下流，造成下层混凝土局部颜色较黑，并注意不能污染钢筋和混凝土的施工缝处。擦油后，保持模板干净，防止灰尘等粘附在表面使混凝土外观变黑和表面不光滑。施工中采用钢管分层对模板进行固定，间距为50cm，墙身模板施工完毕后采用16对拉杆进行加固，防止跑模。模板实测项目项次检查项目允许偏差（mm）检验频率和方 法1摸板内部尺寸（mm）+5，0用尺量长、宽、高各2点2轴线偏差（mm）±10用经纬仪检查，梁纵向检查2点，其他纵、横各检查2点3模板表面平整度（mm）5用2m直尺检查2点4模板标高（mm）±10用水准仪检查，沿模板周边5-8处5.4.3基础片石混凝土浇筑：基础浇筑采用C25片石混凝土，采用的片石质量符合要求。浇筑时采用分层浇筑，每层厚度不超过50cm，大致水平，分层振捣，边振捣边往里加片石。片石强度不低于MU30，掺入混凝土中片石的量不多于其体积的20%，加片石时应注意，片石与模板之间的距离不得小于10cm，片石与片石之间的距离不得小于20cm。在浇筑前石块应干净、湿润。混凝土浇筑工作宜连续进行，一次浇完，并应在前层所浇的混凝土尚未初凝以前，即将此层混凝土浇筑捣实完毕。浇筑完成后，凿除混凝土表面的水泥砂浆和松弱层，并凿毛后用水冲洗干净。5.4.4台身、拱圈块石砌筑1.砌块在使用前必须浇水湿润，表面如有泥土、水锈，应清洗干净。2、砌体应分层砌筑，砌体较长时可分段分层砌筑，但相邻两工作段的砌筑差一般不宜超过1.2m；分段位置宜尽量设在沉降缝或伸缩缝处，各段水平砌缝应一致。3、砌体应砌筑整齐，应先铺一层适当厚度的砂浆再安放砌块和填塞砌缝。砌体外露面应进行勾缝，并应在砌筑时靠外露面预留深约20mm的空缝备作勾缝之用。砌体隐蔽面可随砌随刮平，不另勾缝。4、各砌层的砌块应安放稳固，砌块间应砂浆饱满，粘结牢固，不得直接贴靠或脱空。5、砌筑上层块时，应避免震动下层砌块。砌筑工作中断后恢复砌筑时，已砌筑的砌层表面应加以清扫和湿润。5.4.5浆砌块石的技术要求1、石块应平砌，每层石料高度应大致一致，砌缝宽度不大于30mm，上下层竖缝错开距离不大于80mm。、2、砌体里层平缝宽度不应大于30mm，竖缝宽度不应大于40mm。基础施工实测项目项次检查项目规定值或允许偏差检查方法和频率1混凝土强度（Mpa）在合格标准内2平面尺寸（mm）±50 尺量:长、宽各检查3处3基础底面高程（mm）土质±50水准仪:测量5-8点石质+50，-2004基础顶面高程（mm）±30水准仪:测量5-8点5轴线偏位（mm） 25全站仪或经纬仪纵横各检查两点台身实测项目项次检查项目允许偏差（mm）检验频率和方 法1混凝土强度（Mpa）在合格标准内2断面尺寸（mm）±20尺量：检查3个断面3竖直度或斜度（mm）0.3%H且不大于20吊垂线或经纬仪：测量2点4顶面高程（mm）±10水准仪：测量3处5轴线偏位（mm）10全站仪或经纬仪：纵、横各测量2点6节段间错台（mm）5尺量：每节间检查4处7大面积平整度（mm）52m直尺：检查竖直、水平两个方向，每20m2测1处8预埋件位置（mm）符合设计规定，设计未规定时：10尺量：每件5.4.5模板的拆除（1）应以能保证混凝土表面及棱角不受损坏时方可拆除。）（2）.模板拆除的顺序和方法，应按照配板设计的规定进行，遵循先支后拆，后支先拆，先非承重部位和后承重部位以及自上而下的原则。拆模时，严禁用大锤和撬棍硬砸硬撬。（3）.拆模时，操作人员应站在安全处，以免发生事故。待该片段模板全部拆除后，方准将模板、配件、支架等运出堆放。（4）.拆下的模板等配件，严禁抛扔，要有人接应传递，按指定地点堆放。并做到及时清理、维修和涂刷好隔离剂，以备待用。（5）.拆除模板时，混凝土强度应保证其表面及棱角不受损伤5.5沉降缝施工本工程设计9道沉降缝贯穿整个断面，缝宽1-2cm。洞身与八字翼墙设沉降缝隔开，缝内填以沥青麻絮. 麻絮需提前浸在沥青中，填缝前要拿出晾干，不得污染墙体。填缝从台背处进行，填缝前先将缝内清理干净，用钢筋棍将缝内麻絮填满捣实。 施工时基础及台身钢筋在沉降缝处自行调整。5.6台背回填1、试验台背回填前进行填料试验，对土源进行现场调查、取样试验，对填料进行含水量、液限、塑限等项试验，确定土的最大干密度和最佳含水量.2、填料拌和施工时，取土场所取填料的含水量要求控制在合理范围内，现场根据填料情况调整施工含水量。含水量低于要求时，采用洒水的方法增大填料的含水量，含水量高于要求的范围，采用晾晒的方法加以解决。为保证水泥与土拌和的均匀性，拌和前应首先对原填料进行粉碎，清除杂质，测含水量等工作（土料应尽量打碎，大于20mm的颗粒含量不宜超过10%）。 3、回填范围及要求： (1) 结构物处的回填，必须在达到设计及规范要求强度后方可回填。填土应选用透水性良好的砂性土。 (2) 填土压实度标准同路基压实度标准。4、回填碾压(1)台背回填水泥土必须严格在两端台后对称分层夯实，台背回填应分层回填夯实，分层厚度每层不超过15cm，分层压实时设置2的横坡度以利排水，按1：1的坡度开挖台阶，每层应于两侧各超填宽出设计宽度50cm以利最终路堤边缘的压实。推土机进行粗平，人工控制厚度。粗平完成后，使用平地机进行细平，根据规范要求的平整度进行整平。 (2)台背回填采用小型夯实机具进行夯实，应达到无漏夯，无死角，确保夯实均匀。实验人员随时检测压实度，压实度控制在96。压实度抽检频率每层每50平米一个检测点。碾压完成后，经监理检验合格后方可进行下一层施工。六、技术措施 构筑物台背回填是路基工程中的关键部分，填筑不好会出现沉降差，发生跳车现象，影响行车速度、舒适与安全，甚至会影响构筑物的稳定，出现交通堵塞现象。为了避免以上现象制定以下技术措施： 1、台背回填材料检验合格后方可使用。 2、使用小型机动夯具，以免对构造物产生扰动。 3、填土时应从构筑物两侧均衡填筑，避免对构筑物形成契行压力。七、 材料的准备及安排1.根据通道施工图、工程进度计划、施工预算及采用的施工方法，采购物资（机具、设备、各种材料）的种类数量和规格，如钢筋、模板、混凝土、方木、脚手架等2.钢筋、水泥由业主通过招标形式确定，在本标段内使用中标厂家生产的钢筋、水泥。3.砂、碎石、片石等材料在当地选择厂家就近采购，材料需经试验合格后方可进场。八、质量保证措施1.三通一平”通路、通水、通电、平整场地。2.质量目标坚持“百年大计，质量第一”的方针，树立精品意识，确保工程质量合格率达到100%。3.质量检查措施建立工程质量终身负责制档案，将质量创优目标责任层层分解终身负责。签订横向到各班组、纵向到每个员工，都要明确其具体安全质量责任。4.质量检查制度（1）按照“跟踪检测”、“复检”、“抽检”三个等级进行。（2）施工中工程质量实行“三检制”，即：“自检、互检、交接检”并做好记录。（3）工程主管领导、安质员、技术负责人员定期和不定期对在建工程进行质量检查，对检查中发现质量问题列项记录，认真分析原因，随时指出，纠正或勒令其停工、返工,并提出改进处理意见监督落实。 九、安全生产保证措施为了施工安全管理，规范安全生产管理工作，保障职工的安全生产，根据本通道施工的具体特点，特制定如下安全生产保证措施。1.安全生产的技术措施（1）施工前，根据对图纸会审优化的结果和施工方案，对出现的新的技术工艺及材料，编写相应的安全技术操作规程，并逐级进行安全交底，在施工过程中监督落实。（2）安全生产技术保证措施中的各种安全防护措施的实施列入施工任务单，责任落实到班、组和个人。（3）质检员、安检员随时对现场施工的安全措施的落实情况进行监督。2.现场安全保障措施（1）施工现场的布置符合安全和卫生要求，全面规划、合理安排，以利于施工生产，方便职工生活。具备安全生产、文明施工的条件。（2）施工现场设设立醒目的安全生产宣传标语和劳动保护标志，设备、机械、电器上都标有操作规程和安全警示牌，施工操作时严格按照操作规程进行。（3）所有干部职工、民工严禁酗酒，所有上场施工人员必须戴上安全帽。3.安全保证措施（1）施工现场明确划分用火作业、易燃可燃材料堆放、仓库、易燃废品集中站和生活区等区域。（2）施工现场夜间照明设置照明设备，并安排专人加强巡逻。（3）施工现场配备足够的消防器材，并指定专人维护、管理、定期更新，保证正常使用。十、环保管理制度1.环保制度（1）建立健全环保责任制。（2）严格执行环境保护“三同时”制度，既公路建设项目中防治污染设施必须与主体工程同时设计、同时施工、同时投入使用。（3）、定期向当地人民政府环境保护主管部门、水政部门及甲方、监理单位环保工程师汇报本单位环保管理工作，征求意见和建议，取得他们的支持和指导，服从他们的监督。2.环保措施（1）遵守国家保护法规,加强环保意识,对路基及用地界外的环境进行保护,不造成环境污染.（2）做好排水系统,防止路基水土流失。生产、生活废水,废油料，不要随便排放,机械施工尽量减少噪音、废气对环境的污染。（3）坚持文明施工,泥土废料不乱堆、乱放、汽车运土不污染道路农田,经常维护便道,有利车辆,行人通行。methods of ultrasonic inspection and testing results for grade 3 GB50236-2002 industrial pipe welding engineering code for construction and acceptance of field equipment 4 HGJ222-92 technical specification for welding of aluminium and its alloys 5 low temperature steel welding procedure 6 SH3525-2004 petrochemical JB/ T4708-2000 of welding procedure qualification for steel pressure vessels 7 JB/4709-2000 8 JB4730-2005 pressure vessel welding procedures of steel pressure vessel NDT 9 JB/T4744-2000 steel pressure vessel products mechanical properties test of welded plate II, mechanical equipment installation engineering 1 GB150-98 2 GB50128-2005 vertical cylindrical steel pressure vessel steel welded specification for construction and acceptance of oil tank 3 JB/ T4735-1997 steel welded atmospheric pressure vessel 4 GB50231-2009 mechanical equipment installation engineering construction and acceptance specification for 5 GB50275-98 compressor, fan and pump installation engineering construction and acceptance specification for lifting 6 HG20201-2000 construction installation engineering construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carrying, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of team a fine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken,living standards, poor farmers in less than complete elimination of 4600 Yuan, 8949, 19008. "Five waters rule": the County invested 2.169 billion yuan, similar counties line the city's first complete the 42 km of sewage pipe network construction, completion rate ranked first in the city, won the provincial rural sewage treatment work better; key pollution sources such as electroplating, papermaking, chemical industry management through verification and acceptance of the municipal government, the County removed Black and odorous River, River waste, beginning of river ecological restoration effects. "Three modified a split" aspects: County total demolition illegal area up 2.759 million square meters, completed City issued annual task of 153%, split against area ranking city second; completed "three modified" area 4.846 million square meters, completed City issued annual task of 403%, ranking city third, which village in the a target completed total city ranking first; County Government was named city level "three modified a split" work advanced. These achievements are hard won and should be appreciated. However, we are fully aware, the new period, and work in the countryside and the environment facing higher standards and requirements, provincial party Committee offered to high level build a comprehensive well-off society goal requires "no filth, dirty environment illegal buildings, into a well-off" municipal party Committee also proposes to build into the well-off benchmark goals of the city. Compared with the superior claim, "South Gate of XX beautiful" goal, my County "San Nong" and environment there are a number of weaknesses and gaps, highlighted in the following five aspects: first, agriculture remained "low" pattern. "Low" is reflected in the quality and low; short, value added of the industry chain is low; 123 fusion yield low employee age, low quality. "Small" is reflected in smaller, specialized cooperatives throughout the County there were 3,396, but on the scale of too little. "San" is reflected in production, management, services, decentralized, centralized, standardized, brand, information and organizational level is not high. Second, the countryside is still in "dirty" phase. "Dirty" is dirty of rural sanitation situation has not changed. "Chaos" is a village in rural housing construction planning, construction of disorder, no drawings, no construction, no vetting "four no" phenomenon, heap lying there. "Bad" is the weak rural base, village governance is poor. Thirdly, farmers continued to be "persistent" look. "Old" is aging, rural labor force accounted for 70% over the age of 50. "Big" is that the reform measures ground resistance, such as the transactions of property rights, land replacement; public service supply gap, rural education, health care, pensions and other services can not meet the demand still difficult for poverty alleviation, with emphasis on poverty alleviation and 191. "Hard" is a "peasants, peasants. Four water effects still lacks