dxx河改道段施工组织设计.doc
implemented, the operating environment which does not comply with the safety requirements, workers have the right to refuse to work. Five, the lifting work safety license management 1. the lifting work safety license by the competent departments responsible for the management of the company. 2. this by lifting the Unit received, and conscientiously implement the hoisting and lifting head, operations people, and according to the requirements for approval. 3. the safety operating permits are not allowed to transfer, alter, no off-site use, or expand the scope of uses. 4. the persons listed in the safety operation card should be consistent with the field, when personnel changes should go through the signing procedures and related matters of the transition. 5. the certificate of safe operation of lifting operation does not complete within the allotted time, shall renew the certificate of safe operation of lifting. 6. in the event of relevant meetings, breaks, night work and other special reasons, that corresponds to the job ticket must be issued after approval, the personnel and, other officers will be to replace 7. two promissory notes, exchange equipment Management Department, head of the stock exchange operation. 8. work permits management should establish the ticket file (inventory), the ticket is kept for 3 years. Temporary power supply operation management system, to ensure that the company's safety, strengthen management of temporary electrical safety, avoid personal electrical shock, fire, explosion and electrical hazards, safe, regulate electricity system is formulated. II, scope of application apply to temporary power of company-wide operations and foreign construction electric work. Third, the contents and requirements (a) temporary electrical safety requirements 1. Temporary electrical work must apply for temporary power operating license, no temporary power operating license are not allowed to work. 2. distribution boxes, metal boxes, metal switch box installation and electrical normal uncharged metal base, shell must do to protect, such as zero, zero and the zero line should use a separate Terminal Board connections. 3. temporary electricity switchboard, distribution boxes with numbers and measures rain, lighting, must be able to secure close switchboard door, at all levels of distribution boxes shall not be stacked within a 2 m radius of debris and rain protection measures. 4. each electrical device must have "a machine, a gate, a leak and a box" System. Switch box and the horizontal distance control of fixed electrical equipment should not be more than 3 meters, the protector should match the capacity under the control of the device. 5. when a temporary electric lines overhead, cannot use bare wires, aerial height shall not be less than 2.5 m in the device, outside of not less than 3.5 metres, crossing roads shall not be less than 5 m; reliable protection measures are required when crossing a road, is strictly prohibited in the trees or on scaffolding erected temporary power lines. 6. underground lines must be installed "to the flag" and safety signs. Cables shall be not less than 0.7 meters deep, through roads likely to be lots of mechanical injuries should take protective sleeve, cover plate, and so on. 7. portable lighting, places such as basements, metal containers, wet, when you must use a safe voltage up to 36V. Transformer 36V prohibited the use of . 3. the temporary electrical permit 30KW or more issued by the engineering equipment management, 30KW electric Management Department opened in four copies, a Security Ministry archives, one for electric charge, a copy to the electricity sector, an electrician.We will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, play a control post independent oversight role of evaluation complying with third-party responsibility; to actively make use of internal audit tools detect potential management, streamline, standardize related transactions, strengthening operations in accordance with law. Deepening the information management to ensure full communication "zero resistance". To constantly perfect ERP, and BFS+, and PI, and MIS, and SCM, information system based construction, full integration information system, achieved information resources shared; to expand Portal system application of breadth and depth, play information system on enterprise of Assistant role; to perfect daily run maintenance operation of records, promote problem reasons analysis and system handover; to strengthening BFS+, and ERP, and SCM, technology application of training, improve employees application information system of capacity and level. Humanistic care to ensure "zero." To strengthening Humanities care, continues to foster company wind clear, and gas are, and heart Shun of culture atmosphere; strengthening love helped trapped, care difficult employees; carried out style activities, rich employees life; strengthening health and labour protection, organization career health medical, control career against; continues to implementation psychological warning prevention system, training employees health of character, and stable of mood and enterprising of attitude, created friendly fraternity of Humanities environment. To strengthen risk management, ensure that the business of "zero risk". To strengthened business plans management, will business business plans cover to all level, ensure the business can control in control; to close concern financial, and coal electric linkage, and energy-saving scheduling, national policy trends, strengthening track, active should; to implementation State-owned assets method, further specification business financial management; to perfect risk tube control system, achieved risk recognition, and measure, and assessment, and report, and control feedback of closed ring management, improve risk prevention capacity. To further standardize trading, and strive to achieve "according to law, standardize and fair." Innovation of performance management, to ensure that potential employees "zero fly". To strengthen performance management, process control, enhance employee evaluation and levels of effective communication to improve performance management. To further quantify and refine employee standards . Work, full play party, and branch, and members in "five type Enterprise" construction in the of core role, and fighting fortress role and pioneer model role; to continues to strengthening "four good" leadership construction, full play levels cadres in enterprise development in the一、编制依据1、xx河改道段整治工程施工图纸;2、有关技术及安全操作规范;4、施工现场实际情况及我单位类似工程施工经验。二、工程概况 根据规划要求改道,从月季路东侧沿路向北延伸至后塘河。改道段全长约0.32KM。河道为新开河道,河道断面采用标准断面,两侧新建驳岸,驳岸采用钢筋砼挡土墙,河底高程均1.5米,驳岸顶高程为5.5米,河底宽6米,边坡1:3,驳岸口宽为15米。三、河道开挖施工方案1、测量放线:工程施工测量定位由测量队实施,测量队内部建立完善的测量、复核、记录制度,标高测量应由跟随挖土的全过程以免超挖。按照图纸标示的桩位,用全站仪测量出中心点位和边坡开挖线,再用水准仪测量地面标高,计算出开挖深度,用木桩标示。2、地面清表:根据测量的结果,对红线范围内的表面附着物进行清理,先用挖掘机对大型苗木、施工障碍物清理,然后用推土机进行整理,为下一步机械化施工做好准备。3、沟塘清淤:对沿线的水塘进行摸底调查,挖排水沟,临时排入老三八河道中,排不完的用水泵抽干。用挖掘机将淤泥清理后装车外运弃置。4、土方挖运:本河道为新建,按甲方要求所出土方部分短驳,部分外运。5、新河道在开挖的过程中按照设计将边坡修整到位。6、边坡按设计要求为1:0.75放坡,平均开挖深度在5米左右,根据设计图总说明上土层分析,建议加大放坡系数至1:1 ,以保证施工安全。7、回填碾压:填方高度须按断面分层,由两边向驳岸边填筑压实,回填土每层厚度不得超过20cm,对称回填。先用推土机整平后,再用夯实机械碾压成型。8、余土外弃:根据场内土方平衡的原则,将多余的土方运到指定的弃土地点。并做好弃土的保洁事宜。9、将新河道开挖成型后,对施工范围内的场地进行一次平整,严格按照设计标高要求整理。四、混凝土挡墙施工方案1、本工程主要是挡墙砼工程。挡墙采用衡重式挡墙,挡墙采用C25砼垫层,基础为C25钢筋砼底板,墙身为C25钢筋砼,压顶采用C25砼,全段砼工程量约2200立方米。2、主要工艺及施工方法工艺标准挡墙混凝土强度等级采用C30,现场浇筑。其砼的强度要满足设计要求。钢筋采用HPB235及HRB335。挡墙采用两次浇筑,基础和墙身分开浇筑,并预埋好连接钢筋,且连接处混凝土应凿毛,并清洗干净。挡墙的墙身几何尺寸要符合设计要求。挡墙的钢筋保护层厚度要满足设计图纸要求。挡墙内的预留泄水孔横向间距3.0m,其位置允许的偏差为15mm。并设5%向外倾斜坡度。挡墙的墙顶标高要满足设计要求。混凝土灌注完毕后,应按有关规定进行养护。墙背回填应该在挡墙砼的强度达到设计强度的75%才能够进行填土。挡墙混凝土浇注应均质密实、平整,无蜂窝麻面,不漏筋、无缺损、不露筋骨,强度符合设计要求。挡墙模板加固采用拉筋联合钢管扣件双重保证措施,保证混凝土在浇注过程中不发生跑模。施工时挡墙墙高随路线纵坡变化,但基础应保持水平,同时保证外墙面在同一竖直面上。挡土墙的墙体达到设计强度的75%以上时,方可进行墙后填料施工。墙后必须回填均匀、摊铺平整,填料顶面横坡符合设计要求。墙后1.0m范围内,不得有大型机械行驶或作业,为防止碰坏墙体,应用小型压实机械碾压,分层厚度不得超过20cm。压实度要求90%。施工方法由项目部测量人员放线,确定挡土墙准确位置及标高,然后进行基坑开挖,开挖宽度根据基础宽度按照1:1放坡确定。并由项目部组织人员进行现场收方。基坑完成后,按基底纵轴线结合横断面放线复验,确认位置、标高无误并经甲方确认后,方可进行随时垫层施工。施工时先将土层夯实整平至设计标高,为钢筋绑扎提供作业面。测量放线确定基础尺寸后,进行钢筋绑扎、立模,同时预埋墙身钢筋和墙肋钢筋。挡墙基础的施工按跳槽施工,几个作业面可同时施工,为挡墙的墙身施工提供较多的作业面。基础施工完成后应立即回填,以小型压实机械进行分层夯实,并在表面预留3%的向外斜坡,防止积水渗入基底。基础钢筋的绑扎要注意钢筋的保护层的厚度。浇筑基础砼,在基础砼施工完成后及时对墙身处的砼凿毛,保证浇筑挡墙的墙身时新浇砼与已浇砼的连接。待基础砼达到设计强度的80%后方可进行墙身施工。首先绑扎墙身钢筋和墙肋钢筋,钢筋安装完成经甲方检查合格后,开始立模,并进行沉降缝、接缝及防水处理。施工中特别注意模板的垂直度、平整度及稳定性。施工挡墙墙身时其支架要一同搭建,而墙身的斜支撑不得与支架进行连接,避免在施工中因支架的移动引起模板不稳定。砼的浇筑主要采用泵车进行输送,砼搅拌运输车运送。在浇筑中采用插入式振捣棒进行振捣,不得过振及漏振。砼养护主要是保证砼表面的湿润,防止砼水化反应的各种影响。定期测定砼内部温度、环境温度,控制砼内外温差,防止砼表面产生裂缝。砼强度达到2.5MPa以上,且其表面及棱角不因拆模而受损时,可进行拆模施工,在拆模时不要损坏砼,正面模板主要采用整体移动,在移动过程中注意模板的稳定性、安全性,保证施工安全。钢筋加工钢筋的表面应洁净,使用前应将表面油渍、漆皮、鳞锈等清除干净。钢筋应平直、无局部弯折、成盘的钢筋和弯曲的钢筋均应调直。钢筋的弯制和末端的弯钩应符合规范和设计要求。用I级钢筋制作箍筋其末端应做弯钩,弯钩的弯曲直径应大于主筋的直径、且不小于箍筋直径的2.5倍,弯钩的平直部分不宜小于箍筋直径的5倍。钢筋绑扎时钢筋的交叉点应用扎丝绑扎结实,亦可用点焊焊牢。绑扎采用满绑。在钢筋混凝土与模板间设置垫块,垫块与钢筋扎紧,垫块的安装应该保证钢筋的保护层厚度符合设计要求,同时要保证4个/m2。在砼施工过程中要不时检查垫块的位置是否准确。钢筋绑扎的过程中有高空作业要采取相应的措施,高空作业人员要系安全绳。模板加工模板的安装应与钢筋绑扎配合进行,先绑扎钢筋再立模板,模板的安装不得影响钢筋的检查,检查合格后才能够继续安装模板,模板不应与脚手架相联,避免引起模板变形和浇注过程中模板的不稳定。安装侧模时应防止移位和凸出,基础侧模可在模板外设立支撑固定,墙身的侧模可设拉杆固定,对于小型结构可用金属线代替拉杆。模板安装完毕后,应对其平面位置、顶部标高、节点联结、纵横向稳定性进行检查。其允许偏差必须符合规范要求(允许偏差如下表)。在施工过程中发现模板有移位和变形应及时纠正。模板在安装过程中必须设置防倾覆设施。支架搭设支架宜采用标准化、系列化、通用化的构件拼装,支架的接头尽量减少,相邻立柱的应尽量设在不同的水平面上。模板支架的拆除应遵循先支后拆、后支先拆的原则严禁抛扔。模板支架拆除后,应维修整理、分类存放。混凝土的浇筑。混凝土浇筑前,应对支架、模板、钢筋和预埋件进行检查并作好记录。混凝土自高处直接倾卸时,其自由高度不宜超过2米,以不发生离析为准。当倾落高度超过2米时时,应通过串筒或溜槽等设施下落,当倾落高度超过10米时,应设减速装置。串筒出料口下混凝土堆积高度不宜超过1米。混凝土按一定厚度、顺序、方向分层(50cm)浇筑。混凝土捣固使用插入式振动器时,移动间距不应超过振动器作用半径的1.5倍,与侧模保持50100mm的距离,插入下层混凝土50100mm。每一处振动完毕后,应边振动边徐徐提出,对每一振动部分必须振动到该部分混凝土密实为止,密实的标志是混凝土停止下沉,不再冒出气泡、表面呈现平坦、泛浆。应避免振动棒碰撞模板、钢筋及其他预埋件。平板振动器移位间距应以振动器能覆盖已振动部分100mm为宜。砼浇筑的过程中不得随意向砼运输车中加水,来调整砼的坍落度及流动性。施工中应注意:在施工过程要认真如实的填写施工原始记录及检查证。沉降缝施工沉降缝按设计要求每15米设置一道,缝宽2cm。采用聚乙烯低发泡板填缝,缝后铺400g/m2土工布一层,宽0.8米泄水孔施工泄水孔的施工要根据交底在适当的位置预留,采用75PVC管,泄水孔的横坡为5%,在安装时,可通过钢筋对PVC管进行固定,对于面板方向的泄水孔,要使PVC管与正面模板接触紧密,PVC管的端面要形成相应的斜面,保证在浇筑砼的过程中UPVC管周围不会漏浆,使面板光滑、平整。PVC管管口利用胶布进行密封。泄水孔的位置根据图纸从基础向上用尺量出中心位置,再加以安装。泄水孔的固定可采用绑扎固定。拆除模板当天,对应泄水孔的位置,对进出口进行妥善处理。五、围堰施工方案 老三八河为一个常年流水的河道,河道淤泥较深,拟采用双排圆木桩围堰施工方法,围堰长度约为60米,高度暂定5.0米:入持力层34米,水面外露1.0米,木桩间距2米。为了便于施工,采用挖机及人工配合施工,将木桩逐个打入打桩方式暂定采用单桩打入法,以一块为一组,从一角开始逐块(组)打入,直至工程结束,这种打入方式施工简便,可不停顿地打,桩机行走路线短,速度快。为了保证木桩的稳定,需对木桩进行对拉支护。桩间用草袋夹素土围堰,以阻断水流保证施工。新开河道施工结束后先将围堰内的支撑,从下到上陆续拆除,先逐个将木桩拔出,后将围堰填土挖除及外运。六、排水方案采用明沟排水法,即河道开挖时,在沟(坑)底设置集水井(坑),在沟(坑)底周围或中央开挖排水沟,使水流入集水井中,然后用水泵抽走,抽水工作应持续到整个河道开挖、砼驳岸结束后才能停止。七、防汛渡汛方案施工期间必须采取切实可行的措施,防止洪涝灾害的发生。综合分析河道沿线的统计水文资料,结合本工程的总体规划布置和施工进度计划安排,防洪措施是:充分准备、做好防护。 1、掌握水情、雨情 (1)防洪渡汛小组主动与气象部门、建设单位、监理单位联系,及时掌握水文、气象、洪水预报,估算洪水将出现的时间与水位高度。 (2)根据气象预报、工程的实际情况和机械性能,在洪水到来前分批撤危险区停放于安全位置。 (3)洪水到来前对拟停放机械设备的地方,修筑排水设施以便及时排放积水,防止暴雨冲沟、坍塌,确保安全。 (4)六级以上大风应停止高空作业,切断临时电源,人员应及时撤到安全地带,现场其它机电设备要做好防雨、防雷、防漏电措施。 2、施工机械设备、人员安全渡汛措施 机械设备的停置,在保证安全渡汛的基础上,力求停置在安全可靠,交通联系方便的地方,有利于洪水过后迅速恢复生产。据汛期洪水量的大小,合理有效地进行人员遣散,生活区在布置时尽量选择地势高的地段,避免洪水威胁。如遇特殊情况,及时撤出施工区内的人员、设备至安全地带,避免更大的损失! 3、对受影响工程进度的补偿措施 对受洪水影响较大的项目,在总工期安排上已考虑到对工期的影响,采取了相应措施。为确保分项工程按期完工,制定如下补偿措施: 洪水过后,立即组织人力、机械清理工地,做好善后工作,迅速恢复生产。针对各分项工程的不同施工环境和要求,结合汛期对工程进度的影响,适度地加大人力、物力、财力的投入规模或数量,适当地增加作业时间,把造成的时间资源损失夺回来。制定切实有效的措施,严密组织、科学管理,统筹运作,提高工作和生产效率,尽快把受损失的工期抢回来。 八、施工质量控制1、施工测量施工前,作好现场的测量放样工作,根据设计图纸经纬仪和水准仪测放出挡土墙的正确位置及高程。并及时与现场施工负责人进行测量技术交底。做到每个工序施工完毕后进行一次控制测量。2、施工工艺方法控制每个工序施工前由施工员进行自检后报请甲方到现场进行检查,合格后进行下一步施工。严格按制定的工程质量标准和操作工艺组织施工。重点是控制挡墙的砼质量、观感质量,施工中对砼的振捣要严加控制,保证砼的质量。3、施工质量现场监控对挡墙的钢筋主要是严格检查钢筋的类型、数量及间距,主要几何尺寸、保护层的厚度;模板主要是在施工中控制模板的表面平整度、垂直度,模板稳定性;砼的现场控制主要是砼的浇筑中的振捣,保证砼的密实,对有质量问题混凝土给予坚决退回,不能用于现场施工;深基坑开挖过程中根据设计及施工规范要求采取放坡等措施;泄水管的安装位置。严格施工过程监控,配备专门的领工员现场跟踪监控施工质量,现场领工员必须严格按规定认真作好施工记录,并填写好施工日志。4、施工质量检测挡墙砼试件达到养护龄期后,砼的强度主要采用实验室的抗压强度进行检测;用肉眼观察砼结构的表面,以检查表面是否存在非应力裂缝;采用钢筋保护层厚度检测仪测定现场砼保护层的实际厚度,要求钢筋保护层的厚度不低于设计值;耐久性的检测通过测定砼的电通量。九、施工机械及劳动力配备1、施工机械配备普通挖掘机 六台装载机 两台20t自卸车 15辆推土机 2台2、劳动力配备根据现场需求,我标段拟投入劳动25人,分别安排在开挖现场、驳岸施工。十、安全保证措施1、施工现场的布置复合防火、防爆、防洪、防雷电等安全规定的要求。2、现场道路平整、坚实、保持畅通,危险地点悬挂按照安全色和安全标志规定的标牌,夜间行人经过的坑设红灯警示,施工现场设置大幅安全宣传标语。3、施工现场的临时用电符合安全规定。配电箱能防火、防雨、箱内不得存入杂物并设门加锁,专人管理。检修电气设备时停电作业,电源箱或开关握柄挂“有人操作,严禁合闸”的警示牌或设专人看管,带电作业时经有关部门批准。4、施工前,了解周围环境和地下管线情况,熟悉穿越施工范围内的电力、电信通讯、给排水、煤气管埋设深度和架空高压电线走向及其架设高度,并采取防火措施,做到不明情况、不盲目施工。以免造成重大事故。5、各种机械操作人员和车辆驾驶员,必须取得操作合格证,不准操作与证不相符的机械,不准将机械设备交给无本机操作证的人员操作,对机械操作人员建立档案,专人管理。6、驾驶室或操作室保持整洁,严禁存放易燃、易爆物品。严禁酒后操作机械,严禁机械带病运转或超负荷运转。7、机械设备在施工现场停放时,选择安全的停放地点,夜间有专人看管。8、用手柄起动的机械注意手柄倒转伤人。9、严禁对运转中的机械设备进行维修、保养、调整等作业。10、机械设备停放时放置在安全地段。11、行车危险地段,设置警告牌和车挡。12、挖运设备的刹车制动部分灵活可靠,灯光、信号及灭火器配备齐全。13、大风及大雨后,及时对脚手架进行认真检查,若发现有立杆沉陷、悬空、接头松动、架子歪斜等,立即采取加固、补救或其它处理措施。14、进行施工现场,人人戴安全帽,严禁重叠施工。十一、环保措施1、施工现场划分责任区,派专人负责,明确责任区管理责任。2、现场设置临时卫生设施,做好现场卫生管理工作,生活垃圾要堆放在制定地点,按规定及时清理。3、合理布置施工场地。4、选择低噪音设备,并尽量降低夜间噪音,严谨机械车辆鸣笛,控制噪声污染。5、施工区域运输道路每天应派专人打扫,洒水,防止车辆行驶时扬尘。6、对全员职工进行文明施工重点教育,提高文明施工意识。4. the persons listed in the temporary electrical permit to work should be consistent with field personnel, when personnel changes should go through the signing procedures and related matters of the transition. 5. in the temporary electrical permit to work is not completed within the stipulated time of electricity operations, ground-breaking of the applicant to apply for temporary power operating license. 6. in the event of relevant meetings, breaks, night work and other special reasons, job ticket must be issued after approval, the request corresponds to staff and other officers will be in place. 7. work permits management should establish the ticket file (inventory), the ticket is kept for 3 years. High operation management system in the course of work, aimed at reducing high falls, objects to combat such incidents occur, ensure employee safety, regulations are formulated. II, scope of application apply to the company activities and project work scope of construction, but also into our external contractors and personnel. Three, responsibilities, company management is working at height safety management departments. D, contents, and request 1, referred to in this system fall at height refers to the height of 2 m above the base level (2 m) fall possible jobs. Working at height is divided into four levels: working at height at an altitude of 2-5 meters, called the high level operations; Height working height of more than 5 meters to 15 meters, as second class at height; Height working height of more than 15 metres to 30 metres, known as the three levels of working at height; Working at height safety management regulations height working height is more than 30 meters, called super high job; Due to work reasons, the company only relates to one, working at height, there is no grade, super high assignment. Once the work above there are three levels of the construction proj