jBJCO4驻地办桥后张法空心板首件工程桥梁监理实施细则..doc

In order to ensure normal teaching order, protecting students ' healthy growth, ensuring that national (property) is not lost, to prevent or minimize the occurrence of safety accidents, follow the "prevent, rescue each other, ensure safety and reduce losses" principle, according to the local conditions, make the management system. 1, the principal is the responsibility of school safety, school security under the leadership of President security work leading group. The head teacher to the leadership team is responsible for, implementation of the accountability system. 2, school monthly student knowledge about safety education, education should be diversified in the form every safety education for students of classes per week should be targeted. To carry on emergency issues dealing with education in General, self-help and mutual rescue knowledge. Emergency calls (such as 110, 119, 122, 120, and so on) use common sense in education. 3, the establishment of major accident reporting system. School students report major accident within an hour of education; student run and disappearances to report; report of the accident to a written report in triplicate, a correctional centre, a police station, a township people's Government shall not conceal the accident. 4 week, teachers are on duty system, establish and improve the leadership values; strengthen the education, management of teaching activities in schools to ensure normal teaching order; responsible for school safety leadership always maintained close contact and district police stations, canvassing support from the police station on school safety and help. 5, strengthening teachers ' moral education, establish a dedicated love, improving education quality, observe the students ' psychological changes at any time and take preventive measures, no corporal punishment and covert corporal punishment on students, student out of the classroom, schools may not be. 6, units or departments use student Street propaganda or participate in the celebrations, as well as participating in other social work, without approval of the Correctional Centre, school principals consent, without organization. Without the approval of relevant departments, may organize students to participate in fire fighting, disaster relief and so on. 7, schools should educate students to obey the school rules and regulations, on time, on time home to prevent accidents. 8, school to school inspections on a regular basis, found hidden in time, and in severe cases, it is hard to eliminate immediately closed, and reported to the local people's Government, education, and rule of law section. 9, the school should always check the internal walls, retaining walls, ponds, railings, handrails, doors, Windows, staircases and a variety of sports, extracurricular activities, facilities such as fire safety, infrastructure security, unsafe facility to immediately repair and demolition to ensure that teachers and students work, learn, live venues and facilities are safe and reliable. Song Lin Xiang Liu Jia ping elementary school March 2016 song Lin Xiang Liu Jia ping primary school fire safety systems to enhance fire safety, protection of public property and the life and property safety of teachers and students, school fire safety into day-to-day management, is developing the following fire safety system. 1, strengthen fire safety education of the whole school. According to the requirements of the Fire Services Act, so that everyone has of keeping fire control safety, protecting fire control facilities, fire prevention, reports of fire西宝高速公路改扩建工程B-JC04驻地办后张法预应力砼首件工程监理实施细则(一) 、总则为加强西安至宝鸡高速公路改扩建项目的工程质量管理，确保工程质量，落实管理处在西宝改扩建项目实施 “首件工程认可制”的决定，根据本工程特点，特制定后张法预应力砼首件工程施工监理实施细则。(二) 、施工组织设计的编制及报审1.要求施工单位技术管理部门,详细编写后张法预应力砼施工组织设计,报驻地办审批。2.驻地办对施工组织和施工工艺进行认真审核,书面批复实施样品工程。3.施工单位严格按照批准的施工组织设计施工,施工前由项目总工召集测量、试验、质检、技术员及各施工队负责人和主要操作人员进行详细地技术交底,明确各自岗位职责。在施工过程中详细记录操作程序和有关技术指标,修正完善施组设计,保证其顺利实施。（三）施工前的准备工作1、梁板预制厂已按总监办水泥砼拌和场和梁板预制场布置标准要求，根据实际情况，本着“有利于工序的周转、有利于排水、有利于文明施工”的原则，对场地进行了硬化，对台座、排水系统、钢筋加工区、存梁区进行了合理的布设，现已建设完毕，并经监理工程师的验收。2、预制梁台座两侧已布设好喷淋养生管道，对喷水孔大小、间距、交角的设计均进行了试喷，能确保预制梁顶板、腹板同时喷淋养护，在排水沟口设置沉淀过滤池，净化后的水可重复利用。3、千斤顶选用上海生产的2台200吨穿心式千斤顶，油表粘度1.5级，每小格0.5Mpa，油泵选用柳洲生产的低流量，高压力的液压泵，并且千斤顶、油泵、油表已经陕西省计量研究院配套校核，张拉力与油表读数之间的关系已确定，签定结果如下表：千斤顶号表号 压力(KN) 油表读数(Mpa)0400800120016002000F=31.30461P+11.296079F-力值(KN)P-压力表(Mpa)2000KN09022209.4564011.725.438.250.863.42000KN10931309.4564011.925.538.451.163.8F=31.139729P+10.275991F-力值(KN)P-压力表(Mpa)4、模板长度3m、2m、1m三种规格，面板厚度6mm，已试拼，并编号。接缝平整、严密，对局部错台进行了打磨，平整度小于1.5mm，强度和刚度满足施工要求。内模采用河北衡水橡胶厂定制的充气胶囊，设计充气压力0.02MPa，现场监理已对胶囊的断面尺寸及充气后是否漏气进行了检验 。5、金属波纹管钢带进场必须附有合格证和质量保证书，钢带厚度不小于0.3mm，现场卷制的波纹管必须进行试验，检测在通过1KN径向力作用下的径向钢度和抗渗漏试验，波纹管接长前用平口钳将卷边现象压直，波纹管套接用直径稍大、长度为管径5-7倍的同材质波纹管套接，用胶带密封。6、监理工程师已对通道、预应力砼图纸进行了认真研读，深刻领会了设计意图，对跨径25m的后张预应力砼长度、斜交角及梁底三角垫层进行了认真的复核，并建立了施工台帐。7、按照以前施工经验，对薄壁构件钢筋较密的砼振捣时，采用50振捣棒端部焊-60cm长16钢筋，对钢筋密集区和波纹管部位振捣，效果较好，所以要求承包人提前作好此项目准备工作。（四）施工过程控制：1.底模处理：首次使用时，对底模钢板表板表面应采用角磨机全面打磨，彻底清理掉所有铁锈和铁皮，并用柴油清洗干净，待现场监理检查合格后涂抹脱模剂，并用塑料薄膜贴盖。同时现场监理应认真检查三角垫层的设置尺寸和方向，及吊梁孔底板位置的设置是否合理。2.钢筋的加工及安装：a.钢筋安装前在底模边缘按计划钢筋间距标示出各种钢筋安装位置及跨中、堵头板位置，所有的钢筋都必须在钢筋加工厂焊接定型后才能在台座上挂线绑扎。现场监理对首片梁板钢筋要逐型号、逐规格，逐间距实测实量。并严格控制防止内模上浮的环形箍筋高低尺寸，间距按不大于50cm设置，并在其下沿梁纵向通长布置3-4根8钢筋，控制内模变形或上浮，并在梁端部位，环形箍筋内，内模顶面设置3mm厚，1米至2米长52cm宽的槽型钢板，以更好的控制梁端顶面尺寸和线型。严格控制绞缝钢筋的外露尺寸和间距、线型，对顶板护拦、伸缩缝及其它预埋筋应挂线安装固定，确保外露长度和位置。间距。保护层橡胶垫块按1米间距梅花型布置，待现场监理检查验收后方可进行下道工序的施工。b.钢筋骨架成型后安装波纹管前，应精确计算出波纹管安装位置，并加工定位网，定位网用8钢筋焊为“”型，曲线段50cm，直线段100cm的间距焊接固定，确保位置准确，线型平顺，然后用直径4.5cm的通长PVC穿管其内。3.模板安装：a.模板安装采用“侧包底”，应本着“宁低不高，宁窄不宽、宁短不长”的原则，按规范偏差的负值控制。模板安装前，先在台座两侧粘贴厚度5mm，宽度2cm的橡胶条，保证外模与台座紧贴不漏浆。模板表用面卫生纸抹试不发黄，不发黑，并涂抹脱模剂后方可安装，采用16对拉螺栓上下固定，端模采用10mm厚定型钢模制成，现场监理应认真检查模板高度，长度、宽度和堵头板角度，模板间隙和预埋锚栓孔位置，并挂线校正侧模线型。模板检查合格后现场监理应再次检查钢筋保护层厚度及有无漏筋、少筋现象。b.为了提高预应力砼砼密实度及外观质量，在腹板外侧40cm高位置安装兴平生产的1.5KW高频俯着式振动器，间距按1.5米控制。为了避免开启俯着式振动器时模板与砼表面发现共振现象，俯着式振动器的安装应一正一竖，在振动器底部衬垫硬质橡胶并注意振动器电机的旋转方向，以保证砼均匀密实外观色泽一致。4.混凝土的浇注：a.在顶板跨中、1/2、1/4、1/8断面设置内径为2cm的PVC管材7个预留孔，用以检查顶板厚度。b.运至现场的砼混合料，必须进行坍落度试验，试验应在拌和站和浇注现场分别检测，以便掌握环境温度、运输时间、间歇时间对坍落度的损失大小，砼坍落度控制在7090mm之间。c.砼浇注分两次进行，首先浇注底板砼，采用30、50插入式振捣棒，并避免振捣棒碰撞钢筋及波纹管，并严格控制底板厚度，底板浇注结束后，迅速安装充气胶囊，严格按照胶囊出厂说明书中0.02Mpa的充气压力充气，充气结束后，现场监理再次检查内模的上下、左右位置及尺寸，确保无误后才能浇注腹板砼，并随时观察胶囊的气压是否保持在稳定状态。d.腹板与顶板砼浇注，将料斗中砼放至台座两侧钢筋板上，采用人工翻拌反铲对称入模，避免对内模产生偏心挤压，浇注由梁一端向另一端进行，先将砼拌和料入模30cm高，2米长左右时，用30振动棒配合焊有16钢筋的振捣棒交叉振捣并启动俯着式振动器按5秒时间点振，当砼不再下沉时，再浇注其上30cm高砼，以此类推，浇注腹板过程中，注意活动波纹管内PVC管，直至腹板砼浇注完毕，再对称开启俯着式振动器，按5秒时间间距点振两次后浇注顶板。顶板浇注时应严格控制梁高尺寸，用木抹提浆抹面一次，待砼初凝前，再次收面一次，避免顶板出现裂纹，二次收面后，及时用特制的拉毛工具，沿梁顶横向拉毛，保证每米不少于50道，深度不小于6mm。e.每片预应力砼在浇注底板、侧板、顶板及梁端跨中时，共取六组砼试件，监理组抽检一组，其中三组送标养护，其余三组置于梁顶与梁同条件养护，作为张拉和了解砼强度实际增长情况的依据。5.砼养生：顶面砼拉毛结束后，立即用土工布置覆盖，开启喷淋养护系统，安排专人管理，要经常保护砼表面湿润，直至梁板张拉压浆、移存。6.拆模：在砼强度达到2.5Mpa时拆模内外模，拆模应细心操作，避免对梁体表面棱角产生碰撞，拆模后及时在梁端侧面喷涂梁体编号、预制日期、张拉日期、压浆日期。7.钢绞线下料，编束及穿束：a.钢绞线下料长度按管道长度加两端70cm长工作长度下料，下料采用钢绞线从10cm槽钢上穿过，到达控制点后，在距切口5cm处用铁丝绑扎，用砂轮切割机锯切，以免钢绞端头松股，当天下料当天用完，避免生锈和受到污染。b.下好料的钢绞线必须编号编束，用透明胶带在每根钢胶端头将编号粘贴，并按两端50cm，中间11.5m长间距梳整编束，用1.6mm退火铁丝捆绑固定。穿束前每束钢绞线端头包囊，避免划伤波纹管道。8.张拉：当梁体同条件养生试件强度达45Mpa及7天龄期后，方可张拉。a.将钢绞线按编号每根对应穿过锚孔，使锚具靠近锚垫板。b.将夹片用皮筋捆住，使夹片沿钢绞线滑移到锚环孔内。c.夹片安装后，用一内径略大于钢绞线直径，长度为500mm的钢管将夹片捅紧，并确保夹片之间缝隙均匀一致。d.安装限位板，将钢绞线穿入油顶，要保证千斤顶与锚垫层垂直，并且与钢绞线在一条轴线上。e.张拉控制力及油表读数：预应力砼采用公称直径15.24，公称面积139m，标准强度1860Mpa的高强度低松弛钢绞线，单根张拉控制力F=1860×0.75×139=193.905KN，张拉程序如下表。千斤顶编号表号压力（KN）油表读数（Mpa）04008001200160020002000KN2000KN张拉程序：010%（量测原始间隙）20%（量测伸长值）50%（量测伸长值）100%（量测伸长值）(持荷2min锚固)f.张拉 ：张拉采用张拉力与伸长值双控的办法：横向两端同时张拉N2束至其控制张拉力的50%，再横向两端同时张拉N1束至其控制张拉力的50%。横向两端同时张拉N2来至其控制张拉的100%，横向两端同时张拉N1来至其控制张拉力的100%，当实测伸长值与理论伸长值之差控制在6%以内时，持荐2min，锚固，并仔细检查钢绞线有无滑丝、断丝现象，当出现断丝时，按规定处理。还应检查钢束夹片齿印是否位于同一断面，确保无误后，用砂轮机切割多余钢绞线，外露长度保证3cm，并用水泥砂浆封锚。9.压浆：按照设计图纸要求，采用真空压浆工艺，可保证压浆密实度和减少气泡，压浆宜先下后上，并对真空吸浆工艺进行必要的试验。水泥浆的水灰比控制为0.30.4，浆体流动度为3050S。a.压浆前检查孔道内是否存在有废水、废液，若有可开启盖帽下面的排废孔，开启压浆泵，利用压力差将其排出孔道。b.确定水泥浆合格后，开启真空机抽真空，至真空度达-0.06-0.1Mpa时，再启动压浆泵，让合格的水泥浆以合适的速度进入管道。c.当水泥达到抽真空端时，打开该端的三通的排废液通道，直至排废管排出的水泥浆畅通并与压浆端压出的水泥浆稠度一致时，停止压浆，用螺栓密封排气孔。d.再次开启压浆端盖帽上的排气孔（打开排气阀），启动压浆泵直至排气孔排出的水泥浆流动畅通且与浆桶内的水泥浆稠度一致时，停止压浆。并用螺栓密封排气孔。e.开启压浆泵，压力控制在0.5Mpa左右，持压2min，关闭进浆口阀门，停止压浆。f.移至下一孔道，继续压浆，直至压浆结束。在压浆过程中，现场监理应认真检查水泥性能及持荐压力并作好压浆记录。g.压浆结束后，现场监理检查梁端砼凿毛及清洗和钢筋布设情况，合格后及时封端，并严格控制封端长度，交角。h.水泥浆试件按每片梁5组抽检，监理组抽检一组，其中三组送标养室养护，其余两组与梁同条件，作为移梁时水泥浆强度的依据。10.移梁：当水泥浆强度达到40Mpa时，方可移梁，移梁采用龙门吊机，用钢丝绳捆绑梁体时，应采取必要的衬垫措施，以免损伤梁体砼，预应力砼的存放严格按照设计给定的距板端40.6-47cm支承中心线搁置，因梁体较重，要求按一层存放，存梁时间不超过90天，以免梁体产生较大的上拱度。13.监理日记记录的内容：施工日期、气温、桥梁名称、梁体编号、钢筋、模板实测数据，张拉千斤顶油表编号，油表读数，实测伸长量，砼浇注盘数及浇注、间距时间，试件抽检编号，水泥浆性能指标，压浆顺序、时间、坍落度和施工中出现的不正常问题和解决方法。14.后张法预应力砼使用的表格钢筋加工及安装检查表模板检查表砼施工记录表拆模检查表养护检查表张拉记录表压浆记录表水泥砼试件抗压强度表水泥浆试件抗压强度表坍落度试验表（五）预应力砼梁质量检验标准见下表检查项目质量要求检查备注设计值或允许误差质量要求频率方法砼抗压强度（Mpa）不小于C40符合设计要求2组/每片28天标养梁板长度（mm）+5，-102点 /每片用钢尺量宽度（mm）±203点/每片用钢尺量高度(mm)±52断面/每片用钢尺量断面尺寸（mm）顶板厚+5，08个点/每片用钢尺量底板厚2点/每片用钢尺量有要求时可打孔腹板厚2点/每片用钢尺量平整度（mm）53点/每片每侧2m直尺横系梁及预埋件位置（mm）5每件用钢尺量（六）、预应力砼钢筋加工及安装质量检查及验收标准见下表检查项目规定值或允许偏差检查规定备注频率方法受力钢筋间距（mm）±102个断面/每片用钢尺量横向水平筋、箍筋间距（mm）±10510个间距/每片用钢尺量钢筋骨架尺寸(mm)长±10按骨架总数的30%用钢尺量宽或高±5保护层厚度（mm）±3沿模板周边量8处/每片用钢尺量(七)、后张法预应力砼施工及监理工作职责、工序、控制重点责任人施工工艺监理检查内容承包商：施工前准备审核承包人管理机构、责任人名单、质量保证体系、进驻工地人员、进场设备、材料及进货来源、施工组织设计、梁厂、拌和站规划建设、千斤顶油表校验、模板进场验收。张拉底模检查、千斤顶与油表是否配套、张拉程序是否符合规范要求、伸长量、油表读数是否符合要求、砼强度、千斤顶与梁端是否垂直、钢胶线编束编号。钢筋安装各种钢筋型号、规格、根数、间距、长宽高、保护层厚度、端横梁及护栏、伸缩缝预埋筋位置、钢筋焊接长度监理组：立模梁长、梁高、梁宽是否符合设计、梁端斜度是否合格、线型平顺情况、接缝、错台、模板表面是否干净、锚栓孔位置砼浇注配合比是否准确、搅拌时间是否较长、坍落度、砼浇注工艺、砼摊铺厚度、收面、拉毛、砼试件取样拆模、养护养护是否及时、拆模砼强度、对梁体有无碰撞、是否存在露筋、蜂窝磨面、养护时间移梁起吊是否采取质量、安全措施、支承点位置是否符合设计、存梁时间(八)、质量目标西宝改扩建项目建设为国优工程和西部地区高速公路改扩建示范工程，达到“三年无病害，设计使用年限内不大修”质量目标。 具体工程质量指标为：交工验收时，分部工程质量评定全部合格，工程质量单点检测合格率达到93%以上，关键指标单点检测合格率达到96%（含96%）以上。分项工程检查合格率100%，质量评定全部合格。(九)、监理责任人：驻地办高级驻地为质量管理主要责任人，副高级驻地为质量管理第一责任人，试验室主任，各专业工程师为质量管理直接责任人。B-C05标桥梁工程监理责任人：吴胜龙 王中革。B-C06标桥梁工程监理责任人：张崇林 刘裕春。以上后张法预应力砼首件工程施工监理实施细则，请施工单位项目管理人员及工程技术人员，驻地办监理人员认真学习，在施工过程中检查落实，确保桥涵工程施工质量，圆满完成西宝改扩建工程任务。Electricity lines, equipment inspections, found hidden in time for rectification, maintenance, and security. 9, do not use an open flame in the classroom, prohibit burning stove, lit candles, mosquito repellent, no smoking, and banning messy wiring. Without using any household appliances is not allowed. 10, live on campus faculty members, must lead by example, and educate families and children ready to fire. 11, household use of gas in schools, to master proper usage, pay attention to the leak-proof, explosion-proof, fireproof, closing valve after use to ensure security. 12, dining room must be qualified, and annual testing of pressure vessels, to regularly check, the canteen workers must be certified, strictly by operation operation, gas tank and stove safety distance of 1.5 meters, to prevent accidents. 13, the adverse consequences caused by ignoring fire safety regulations, will be punished, until investigated for legal responsibility. Song Lin Xiang Liu Jia ping elementary school March 2016 Xiang Liu Jia ping elementary school, pine slopes surrounding safety management system 1 teachers and students, the surrounding area of the school governance covers personal and food hygiene, cultural events and other aspects, integrated governance shall obtain wide support and full cooperation of the community. On the surrounding environment in schools should be closely monitored. 2, school work at the same time, should pay attention to the safety management of school environment, should take the initiative to contact the district police station, the village Committee, Correctional Centre, Township government, business management and other departments to do a good job management. 3, teacher on duty with the exception of inspections in schools, should also pay attention to environmental inspections near the campus, found that the jobless migrants from rural areas, for example, harassment of students and a variety of accidents, according to different situations reported school officials or the police station in a timely manner, to protect the safety of students. 4, every day before school, teachers remind students, pay attention to traffic safety. 5, should educate students to respect social ethics, and various regulations, maintaining public order, and fight the bad guys, and grasp the correct ways and means of maintaining and improving students ' self-care ability. 6, the establishment of emergency rescue teams of teachers in schools, on high alert and deployed. Song Lin Xiang Liu Jia ping elementary school March 2016 song Lin Xiang Liu Jia ping primary school teachers and students organizations out of safety management system organization activities between teachers and students, to draw up a precise plan and security measures must be signed by the school officials to review the programme of activities agreed upon Correctional Center agreed to implement. Organization to the field relatively far or activities require approval by the Deputy Director of the Education Bureau in charge of security. 2, each activity should have a specific responsibility, pay attention to the persons age, physical match. Route 3, activities, location, field surveys should be carried out in advance. 4, activities for the means of transport should explain the situation to the school to comply with vehicle, safety requirements, before the line for repairs. 5, each activity must have security, emergency response plan for accidents. 6, picnics, hiking, picnic to pay attention to fire prevention, food poisoning, prevention of fall accidents 7, the activities near the rivers, reservoirs, no measures or do not meet the security requirements of the Organization and not let students into the water11