公路橋鉆孔灌注樁施工方案.doc

management systems and measures established by, and a number of pragmatic, combined part-time workforce education information, the protection of the digital campus construction and sustainable development. Six Bureau attaches great importance to information technology security, information technology security, entrust XX City Center for educational information and equipment dedicated to the work. Network security leading group was set up, chaired by the Education Bureau Chief, head, for XX education Metro-network and information security emergency response leadership. Deputy group leader for XX educational metropolitan area network and information security emergency response coordination, command. The team assist leader and deputy leader, responsible for network XX network security and information . Team. Information security work Conference held each semester, and deployment of information security of documents issued on a regular basis. Information security assessment is included in the annual index. Strictly implement the information security budget to ensure information security of investment. By XX, education information and equipment Centre XX network network security and information security. According to the information technology security requirements, issued a document requires schools (units) implement, defined the information security guidelines, specific work practices, procedures, and requirements. Clear industry information security incidents (accidents) to detect, report and disposal processes. According to self-examination, the school (units) basic established has network security management system; the school (units) according to this units actual, established has units personnel management, information system room management, and equipment management, and media management, and network security construction management, and shipped dimension management, and service outsourcing, management system; developed has computer and the network of network security responsibility held system, signed has network security responsibility; website of information management personnel is responsible for confidential management, password management, on computer enjoys independent right, User name and password of the computer for its proprietary, and release of provisions is prohibited, such as leaks, investigated for responsibility. According to who is in charge of whos in charge, who is running and who is responsible for, who uses principles of who is in charge of management schools (units) defined the roles and responsibilities of information security, assurance responsibilities to schools. XX city schools (units) total site 20, 19 of which were not classified security protection assessment, of which 1 (XX education and resource network) for classified security protection levels, without third-level information systems. Total education information systems 1 (XX education cloud platform), contains features with e-Government, resource library, test database, mail services, such as e-books, all intranet services. No for grade protection grading record and evaluation of school (units), requirements the school (units) according to information security grade protection about policy and standard, organization carried out information security grade protection security management system construction, and technology measures construction and grade evaluation, implementation grade protection system of the requirements, makes information system security management level obviouslyfacility up to 160 million Yuan, according to the standard, high quality planning XX educational metropolitan area network realizes Wan Zhaokuan to schools, hundreds of megabytes of broadband to the table, wire (ie: Web, video, audio) to the target, electronic whiteboards, multimedia classrooms, remote interactive video teaching system of modern educational equipment in the classroom. . With Intel company on XX Education City domain network of topic case design, relies on Cisco company thought Shu aid chuan project staff free provides has three years technology support, from 2009 began, according to high standards, and high of work thought, and manpower planning, and points step implementation, using school earthquake Hou reconstruction of opportunities, again planning elementary and middle schools campus network and education city domain network, and local broadcasting network company cooperation, using broadcast TV network, will physical fiber laying to each school, to minimum of cost achieved has physical fiber school school pass; Each school construction standards of campus network and network access to all rooms; XX education metropolitan area network center machine room equipment in the Ministry of education standardization management platform, the Central Library of audio-visual education resources, set up a Chinese teacher education cloud platform, implemented links the two platforms. At present, the citys primary and middle school students to computer 3198, vitality than 10:1; 809 equipment classes through the classroom (primary and secondary); 36 of the campus network. The establishment of an advanced, practical Gigabit educational metropolitan area network, the citys schools have access to educational metropolitan area network, schools have computer networks, closed-circuit television network, broadcast networks into the classrooms, realize the triple play. Schools share Internet bandwidth, can meet the needs of teaching of the school office and at any time. According to Ministry of education on full started implementation teaching points digital education resources full cover project of notification (taught technical letter (2012) 74th,) and XX Province Department of education on issued XX province teaching points digital education resources full cover project implementation views of notification (chuan taught letter (2013) 18th,) requirements, I city 6 a teaching points implementation teaching points digital education resources full cover project, combined I city specific situation, developed issued has XX City Bureau on teaching points digital resources full cover project of implementation programme, Established XX, full coverage of digital resources in modern distance education teaching project leading group, XX, chaired the Secretary for education. Established, digital resources in modern distance education teaching, XX full coverage project group, XX, Director of the Center for educational information and equipment chaired Zhu Guiyan, responsible for distance education digital resources covering project work. Projects in XX city school digital resources in modern distance education teaching full-coverage project leading group, digital resources in modern distance education teaching, and XX full coverage project group leadership and organization, in accordance with the unified arrangement of the whole province, responsible for university education digital resources covering project management and implementation. According to provinces arrangements, I Center has arrangements Gong公路橋1.橋墩、橋臺(tái)施工：采用組合鋼模板安裝模板，汽車起重機(jī)配1m3吊罐入倉(cāng)澆筑砼。2.預(yù)制空心梁：先張法是將鋼筋張拉到設(shè)計(jì)控制應(yīng)力，用夾具臨時(shí)固定在臺(tái)座或鋼模上，然后澆砼，待砼達(dá)到一定強(qiáng)度后，放松鋼筋，靠鋼筋與砼間的粘結(jié)力使砼構(gòu)件獲得予壓應(yīng)力。其工藝流程如下：校核張拉機(jī)具 預(yù)應(yīng)力筋制作 壓 試 塊制作試塊調(diào)整初應(yīng)力堆 放出 槽放松及切斷預(yù)應(yīng)力筋 拆 模養(yǎng) 護(hù) 澆 搗 混 凝 土 支模、安設(shè)預(yù)埋件、網(wǎng)片 片 片張 拉 預(yù) 應(yīng) 力 筋 支底?；蛲扛綦x劑、安放鋼筋骨架及預(yù)應(yīng)力筋清理臺(tái)座(1)臺(tái)墩澆筑：臺(tái)墩是先張法施工的主要設(shè)備之一，它承受予應(yīng)力的全部張拉力，因此應(yīng)有足夠的強(qiáng)度、剛度和穩(wěn)定性。根據(jù)抗傾驗(yàn)算和抗滑穩(wěn)驗(yàn)算，設(shè)計(jì)臺(tái)墩，澆筑臺(tái)墩砼。(2)予應(yīng)力筋鋪設(shè)胎模鋪放鋼絲前應(yīng)涂隔離劑，隔離劑不能沾污鋼絲，以免影響鋼絲與砼的粘結(jié)，若予應(yīng)力筋遇到污染，要用適當(dāng)?shù)娜軇┣遒蓛?。予?yīng)力鋼絲鋪設(shè)采用牽引車鋪設(shè)；接鋼絲用鋼絲拼接器；鋼筋間的連接或鋼筋與螺桿間的連接，用套筒雙拼式連接器。(3)張拉予應(yīng)力鋼絲張拉：在鋼模上用墩頭梳筋板張拉,一端卡在固定梳筋板上，另一端卡在張拉端的活動(dòng)梳筋板上，用張拉鉤鉤住活動(dòng)梳筋板，再通過(guò)連接套筒將張拉鉤和拉桿式千斤頂連接進(jìn)行張拉。予應(yīng)力鋼筋張拉：用三橫梁或四橫梁式張拉鋼筋。張拉注意事項(xiàng)：a.張拉時(shí)，張拉機(jī)具與予應(yīng)力筋在一條直線上，在臺(tái)面上每隔一定距離放一圓鋼筋頭作墊塊，防止予應(yīng)力筋因自重而下垂污染予應(yīng)力筋。b.頂緊錨塞時(shí)，用力不要過(guò)猛，以防鋼絲折斷。c.予應(yīng)力筋張拉完畢后，對(duì)設(shè)計(jì)位置的偏差小于5mm。a. 張拉過(guò)程中發(fā)生斷絲或滑脫時(shí)，予以更換。b. 沿臺(tái)座長(zhǎng)度方向每隔45m設(shè)一個(gè)防護(hù)架。(4)砼澆筑根據(jù)試驗(yàn)配合比，采用425#的硅酸鹽水泥拌制砼。澆筑砼時(shí)要細(xì)心施工，避免吊罐碰撞胎模。(5)予應(yīng)力筋放張先同時(shí)放張予應(yīng)力較小區(qū)域的予應(yīng)力筋，再同時(shí)放張予應(yīng)力壓力大的區(qū)域的予應(yīng)力筒。放張采用千斤頂放張法。(6)養(yǎng)護(hù)：按照砼施工規(guī)范要求進(jìn)行予制空心梁的養(yǎng)護(hù)。3.安裝支座根據(jù)市場(chǎng)調(diào)查征得監(jiān)理單位認(rèn)可，購(gòu)買設(shè)計(jì)要求的橡膠支座，并提供生產(chǎn)廠家技術(shù)說(shuō)明和質(zhì)量證明。安裝橡膠支座前首先測(cè)量檢查墩、臺(tái)支座位置處的高程與設(shè)計(jì)高程的誤差。對(duì)與圖示不同的部位進(jìn)行標(biāo)高調(diào)整，對(duì)支座處的砼表面，要求平整和清潔，以保證全部面積上壓力均勻。4.安裝橋面板先閘墩上橋安裝，后兩岸。由右岸 向岸岸施工。(1)橋面板復(fù)檢：構(gòu)件幾何形狀和尺寸的檢查，埋件及吊環(huán)位置檢查，預(yù)留孔的尺寸及其位置檢查，構(gòu)件外觀有無(wú)裂紋及缺陷等 。(2)空心板運(yùn)輸：根據(jù)運(yùn)輸安裝方案確定裝運(yùn)方向；用平板拖車把空心板運(yùn)至下游消力池及相應(yīng)部位；在運(yùn)輸過(guò)程中要固定牢靠，以防傾倒；在運(yùn)輸前要先修整運(yùn)輸?shù)缆贰?3)空心板安裝：安裝程序如下：測(cè)量放線安裝墊板二期砼測(cè)量放線安裝支座吊裝預(yù)制空心梁 調(diào)整焊接固定檢查驗(yàn)收拆除腳手架等 a.準(zhǔn)備工作：配備吊具、機(jī)具、材料；吊裝機(jī)械就位，清理障礙；準(zhǔn)備臨時(shí)加固；測(cè)量放樣。b.空心梁綁扎：綁扎要牢固可靠，綁扎方便，起吊過(guò)程中不能發(fā)生永久變形，不出現(xiàn)裂縫，并便于安裝。c.起吊就位：起吊中要保證空心梁在空中旋轉(zhuǎn)平穩(wěn)用溜繩控制，吊索保持垂直，操作平穩(wěn)，盡量避免緊急制動(dòng)，以便就位。d.校正：根據(jù)設(shè)計(jì)要求和規(guī)范規(guī)定，對(duì)梁平面位置、標(biāo)高、垂直度等進(jìn)行校正。(4)安全生產(chǎn)施工：a.吊裝前對(duì)設(shè)備、工具等 進(jìn)行安全性能檢查；b.吊裝人員進(jìn)入現(xiàn)場(chǎng)必須戴安全帽，高空作業(yè)系統(tǒng)安全帶。c.吊裝時(shí)，禁止人員站在梁上指揮，起重臂下嚴(yán)禁站人。d.起重臂、吊索、吊繩與電源線要保持一定的安全距離。e.設(shè)置專人負(fù)責(zé)指揮，嚴(yán)禁亂指揮。5.橋面鋪裝：(1)伸縮縫：清理伸縮縫縫槽，如有頂頭現(xiàn)象或縫寬不符合設(shè)計(jì)要求時(shí)，應(yīng)鑿剔平整，在橋面砼干燥收縮完成且徐變?cè)诓糠滞瓿珊笤龠M(jìn)行安裝，安裝后的橋面伸縮縫的伸縮性能必須有效，縫面與橋面結(jié)合良好，并保持平整。(2)橋面鋪裝a.清基：在橋面鋪裝前先清掃橋面，然后用水沖洗干凈。b.槽縫灌漿：拌制水泥砂漿或細(xì)石砼灌注槽縫。c.立模：采用制作的定型鋼模板進(jìn)行模板的安裝，模板要牢固、緊密，在整個(gè)長(zhǎng)度上與基層緊貼，不漏漿。d.焊接、扎筋：按照設(shè)計(jì)要求焊接橫向聯(lián)結(jié)鋼板，鋪設(shè)縱向接縫鋼網(wǎng)或橋面鋼筋網(wǎng)。e.澆筑砼：1.0m3強(qiáng)制式攪拌機(jī)拌和；6m3攪拌車運(yùn)輸；25t塔式起重機(jī)配3.0m3吊罐吊運(yùn)入倉(cāng)；機(jī)械攤鋪；振搗以砼停止下沉，不再冒氣泡并泛出砂漿為準(zhǔn)，表面整平時(shí)，鋪設(shè)一層細(xì)石砼；待表面抹平砼初濘后，按照設(shè)計(jì)要求的表面構(gòu)造深度沿橫坡方向拉毛；根據(jù)圖紙要求埋設(shè)泄水管。7.6.2.3鉆孔灌注樁先基坑支護(hù)樁，后橋臺(tái)樁。由閘軸線向上、下游施工。1.根據(jù)地質(zhì)剖面圖知鉆孔灌注樁范圍內(nèi)為粉質(zhì)粘土、淤泥質(zhì)粘土和淤層，擬選用CZ-22型沖擊鉆機(jī)，為防止振動(dòng)使鄰孔壁坍塌以及影響鄰孔已澆筑砼凝固，采用隔孔跳打法進(jìn)行施工。工藝流程如下圖：平整場(chǎng)地構(gòu)筑鉆機(jī)平臺(tái)樁位放樣埋設(shè)護(hù)筒安設(shè)鉆架制作護(hù)筒鉆機(jī)就位鉆 進(jìn)固壁漿液循環(huán)系統(tǒng)下鋼筋籠測(cè)量孔深孔徑孔斜清 孔安設(shè)清孔設(shè)施測(cè)量淤泥土厚度制作吊運(yùn)鋼筋籠安設(shè)導(dǎo)管溜槽等澆筑砼制備、運(yùn)輸砼試裝檢驗(yàn)導(dǎo)管養(yǎng) 護(hù)拔除護(hù)筒測(cè)量砼高度護(hù)筒：使用5mm鋼板制作護(hù)筒，護(hù)筒內(nèi)徑比鉆頭直徑大20cm，根據(jù)灌注樁位置地形條件和地下水位情況，采用挖埋法安設(shè)護(hù)筒，護(hù)筒高出施工地面30mm,在護(hù)筒底及周圍回填粘土、夯填密實(shí)防止漏水，護(hù)筒中心與樁位中心的偏差不大于5cm，傾斜度偏差不大于1。鉆孔：鉆孔開(kāi)始后分班連續(xù)作業(yè)，一次成孔。在鉆孔過(guò)程中由專人進(jìn)行鉆孔記錄，注意土層變化，采取渣樣，判斷土層；選用優(yōu)質(zhì)粘土，摻入膨潤(rùn)土粉，提高泥漿的粘度和膠體率，護(hù)筒內(nèi)泥漿頂面保持高出筒外水位1.5m；做好泥漿回收凈化，循環(huán)使用工作。清孔：采用掏渣清除法，保持孔泥漿的漿面高程，以保證孔壁的穩(wěn)定。吊放鋼筋：按設(shè)計(jì)圖紙加工制作鋼筋，利用鉆機(jī)起重機(jī)起吊鋼籠入孔，鋼籠周圍綁扎砼墊以保證保護(hù)層；準(zhǔn)確牢固定位鋼籠，防止?jié)仓^(guò)程中錯(cuò)位和浮籠。灌筑水下砼：砼的澆筑采用直開(kāi)導(dǎo)管法，澆筑要連續(xù)作業(yè)；澆筑砼用專用澆筑(如下圖)；澆筑到樁頂時(shí)，要高出設(shè)計(jì)頂面60cm，待砼初濘后和終濘前，挖去此部分砼，達(dá)到設(shè)計(jì)高程。樁的檢驗(yàn)：待灌注樁砼強(qiáng)度達(dá)到設(shè)計(jì)要求時(shí)，采用超聲波檢測(cè)法檢測(cè)樁的質(zhì)量，若有問(wèn)題采用適當(dāng)方法處理。7.6.2.4砼溫控措施：1. 低溫季節(jié)即平均氣溫3oC以下：盡量避免12月份和元月份澆砼；改變砼配合比，摻適當(dāng)防凍劑；對(duì)砂石骨料、水泥等原材料覆蓋保溫材料進(jìn)行保溫，堆高骨料；加熱水進(jìn)行砼攪拌；攪拌車運(yùn)輸砼；覆蓋保溫，提高基面溫度。覆蓋保溫層，防止新澆砼凍傷。2. 高溫季節(jié)施工措施減少水泥用量，盡量加大骨料粒徑；采用水化熱較低的水泥品種；采用外加劑減少水泥用量，如木鈣減少劑； 加冰屑降低砼出機(jī)溫度；縮短砼運(yùn)輸時(shí)間；盡量避免一天中最高溫度時(shí)澆筑砼；加快灑水養(yǎng)護(hù)。3.雨季施工措施砂、石料堆放場(chǎng)，周圍做好排水設(shè)施；防止雨水及周圍水流入倉(cāng)內(nèi)；保護(hù)新澆砼面；盡是避免雨天澆筑砼。7.6.2.5砼養(yǎng)護(hù)和保護(hù)(1)養(yǎng)護(hù)：砼澆筑完成，當(dāng)砼硬化到不會(huì)因?yàn)⑺B(yǎng)護(hù)而損傷時(shí)，立即派人進(jìn)行灑水養(yǎng)護(hù)覆蓋草簾，使砼表面經(jīng)常保持濕潤(rùn)狀態(tài)，養(yǎng)護(hù)使用管井降水所排出的井水，養(yǎng)護(hù)時(shí)間根據(jù)水泥品種和氣候條件的不同進(jìn)行確定，但至少不少于14天。但氣溫低于5oC時(shí)，應(yīng)停止灑水養(yǎng)護(hù)。(2)保護(hù)：施工過(guò)程注意保護(hù)和維護(hù)表面、棱角等，以保證砼外觀質(zhì)量。外商投資企業(yè)需改變登記注冊(cè)事項(xiàng),應(yīng)當(dāng)及時(shí)辦理變更登記。變更項(xiàng)目應(yīng)在報(bào)經(jīng)原審批機(jī)關(guān)批準(zhǔn)后30天內(nèi)向登記主管機(jī)關(guān)申請(qǐng)辦理變更登記。improve, security prevention capacity obviously enhanced, security hidden and security accident obviously reduced, effective guarantees information health development. XX Education Centre regularly carry out day-to-day network security monitoring information and equipment. By the appropriate technical staff, XX network engine room maintenance staff on site management and maintenance on a regular basis, scheduled viewing of networks, systems, databases and associated equipment operating conditions, and make a record. Computer lab maintenance managers regularly run a variety of devices in the school information system parameters, server systems and various data backup, so that there was a hardware failure in a system crash can resume quickly and efficiently. Computer lab maintenance managers establish a network antivirus system, Avira Virus system on a regular basis, and anti-virus software security assessment, time to upgrade. Computer lab maintenance management for all equipment in the room a regular dust, replace the old label. Regularly host servers, network switches, core routing, firewalls, hardware maintenance, such as equipment failure, should be processed in a timely manner in order to ensure safe and reliable operation of the system. In XX city information and equipment was established within the Centre, educational metropolitan area network center machine room XX. Servers and data stores and applications to set up in XX City metropolitan area network center machine room. WindowsServer2003, windowsServer2008, windowsServer2012, Linux, the operating system, the database for SQL Server2008, Office software, such as Microsoft Office software. Schools (units) of computer, information system security products for domestic products, including the use of 360 and kingsoft Internet security software. XX education metropolitan area network used by the server for HP, firewall and information security product for Huawei and Cisco products. In their daily work, to publicize related knowledge and information security considerations. Enhanced global awareness of network and information security, and strive to achieve network everyone knows security and virus before the guard, to improve network and information security, ensure that the XX education system network and information system security. Tracking reporting system requires all parties to strengthen collaboration, work closely with emergency safety plan developed XX education metropolitan area network, regularly carry out emergency drills, and carried out special funds every year to protect the security of information. Annual 2-3 professional training for network managers in the city, forming technology with a strong professional and technical team, school network managers on common network failures and be capable of solving security issues. Issues that cannot be resolved, timely forms of meetings, such as meetings, analysis, and solutions through a meeting, without rolling up the ability to solve problems, and feedback to superiors in writing departments to resolve. Through self-examination, we are well aware, relative lack of investment in education, facilities and equipment for further updates, education development is still uneven, new education concepts need to be further enhanced to some extent and restricting the development of city education. We will take the opportunity of government supervision, to strive for the province education demonstration counties as a driving force, further increase input in education, efforts to promote thelong wing, and Li Wanfu, and Michael Jenkins, and Chen Jian, and Song and xiaochuanyun, 7 bit comrade participate in province backbone face-to-face or network learning, do each teaching points are has teachers participate in training, October 17, 2013, issued XX city education information and equipment Center on requirements the teaching points school for good satellite ground station installation prepared of notification, requirements school related management personnel familiar XX province teaching points digital education resources full cover project construction management manual, Particularly with regard to installation preparation parts according to the point of XX province full coverage of digital educational resources in the project construction management manual . Devices are able to receive TV signals and IP data, the schools have school training and school-based application to use good. Actively organize implementation of a division of a class, a teacher in one class activity. XX in XX city first to complete full registration of teachers working in this city, XX, Sun class rate of 54 per cent respectively, the forefront. In XX, a division of a class, a class a total ranked first in Division activities, was awarded the national ministerial one, 2 provincial second prize, third prize at the provincial level 3. Actively organize implementation of the e-learning space the work of everyone. At present, in the open space of public service platform of provincial educational resources teachers number 2444, 83 to the total number of teachers, student number is 6569 of the open space, the citys total students 18.31 to (junior high school students in 30 above, students not required), registration number to meet the requirements of teachers and students, in