桩基高压发注浆补强加固 施工方案2.doc

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1、of 16 session brought to adhere to people-oriented, all-round, coordinated and sustainable scientific development view, promoting economic and social and human development. The core of the scientific Outlook on development is people-oriented. Implement the scientific concept of development and first

2、 implementation of people-oriented requirements. Office of the Party Committee of this years work, we have to firmly establish the idea of people-oriented philosophy, richness of understanding the people-oriented, seriously implement people-oriented requirements correctly grasping the practice of pe

3、ople-oriented, through people-oriented three services working process, pushing the city Party Committee Office work to a new level. Investee (b) investee by people-oriented, in the final analysis is centred, human premise, a human-powered, human purpose. People-oriented thinking long. As early as th

4、e spring and Autumn period of more than 2000 years ago, Qi Guan Zhong: overlord of the beginning, and people-oriented. Principle of the solid. For thousands of years, traditional Chinese political culture there is a wide variety of people-oriented thought. Pan Gengs people to the Duke of Zhous prote

5、ct and then to Confucius man, from his your KingLight to the idea of Grand boat water and then to advocate since the Han and Tang dynasties nation , these useful idea is, is the country of the people, political sources. The rulers of people, the San Zhi bei yan; the rulers of thin people, then died

6、suddenly. The West ever since the Renaissance, it is because of the rise of humanism, really started to self awareness, self discovery and self-reflection. Predecessors in criticism of Marx and Engels thought on the basis of the outcome of, according to the great discovery of historical materialism,

7、 reveals the true nature of human existence, the ideology was essential and strongly suggests, as provided. In 1894, the Engels from Marxs writings, singled out his favorite passage for the new century weekly solemn inscriptions: there, the free development of each is the free development of all peo

8、ple. In modern society, people-oriented thinking more and more attention. People generally regard it as a kind of economic and social development, a principle, a requirement, as a need to maintain the interest of the people of, a pursuit, a purpose. This idea was praised, with the profound connotati

9、on and practical significance. Investee 1. people answering epistemological questions and answered the questions of methodology. People contains a profound philosophical, epistemological and methodological significance of science. Known as epistemology, refers to the theories on the relationship bet

10、ween knowledge and practice. In the view of Marx and Engels, man is mans world, is the State, society, and history writers and characters. In other words, the world is one world, society is human society. We know the society, starting from the people to observe; we know the practice, from the people

11、 to study; we knew Office work, from the people who set out to explore. Ignoring this, will she seek桩基高压注浆补强加固施工方案审批表施工单位意见：项目技术负责人（签章）： 项目经理（签章）： 年 月 日设计单位意见：项目负责人（签章）： 年 月 日监理单位意见：总监理工程师（签章）： 年 月 日建设单位意见：项目负责人（签章）： 年 月 日桩基高压注浆补强加固施工方案编制单位：福建红建工程有限公司编 制 人：陈 润 辉审 核 人：林 全编制时间： 2015年 月 日 一、施工概况49#工程桩施

12、工概况如下：在施工49#桩(22轴/K轴）桩径800mm，施工桩长18.80m，钢筋笼长度15m，下导管18.50。开挖时间下午3点40分终孔时间5点40分，7点下钢筋笼、导管；8点30分开始灌注混凝土，混凝土采用金辉商品混凝土，砼强度C35水下混凝土。浇捣至8点50分拆除第一节导管后发现导管堵塞，现场测量已浇捣混凝土9.8m还剩余约7m未浇捣。现场采取拆除导管重新下导管，导管下至7m处无法继续下降采用锤击方式才能把导管敲下。继续浇捣至设计桩顶标高-6.20m处。经抽芯检查发现49#桩(22轴/K轴）桩径800mm，施工桩长18.80m，有效桩长17.40m，桩身质量不能满足设计要求。取芯第一

13、节0.00m-1.95m完整 第二节1.95m-2.91m完整 第三节2.91m-5.43m完整 第四节5.43m-13.30m不能满足设计要求，需对该部位缺陷位置进行补强加固处理。 第五节13.30m-17.40m完整 二、编制依据混凝土结构工程施工质量验收规范JGJ94-2008；建筑地基基础工程施工质量验收规范GB50204-2002；建筑桩基技术规范（JGJ94-2008）；钢筋焊接及验收规范JGJ18-2003；建筑机械使用安全技术规程JGJ33-2001；建设工程施工现场供用电安全规范GB50194-1993；建筑工程施工质量验收统一标准GB50300-2001。三、施工方案根据现

14、场芯样分析和设计要求，要对该桩缺陷位置不达标部位实施有效的加固补强措施，该桩为边桩，设计要求竖向抗压承载力1600KN,竖向抗拔承载力500KN，桩端进入碎裂状强风化泥岩6m，目前较有效的方法就是采用复合注浆法。其加固原理为先对桩抽芯孔采用高压水流冲洗，然后采用高压循环灌浆系统进行多次反复压浆工艺，以使桩缺陷部位有效填充并向外扩大1.5倍以达到补强的目的。1、施工场地布置及准备施工场地主要设施有：水泥站、制浆站、泥浆池、临时生活设施等。2、施工设备施工设备一览表：序号设备名称用途数量1空气压缩机送风洗孔1台2搅拌机制水泥浆1台3150高压泵加压送浆1台4高压输浆管输水泥浆若干3、施工技术参数喷

15、浆（水）压力：25Mpa气压：0.501.00MPa浆液水灰比：0.7开孔直径：110mm加固直径：0.8m加固强度：M154、施工工艺4.1工艺流程图钻孔建立孔口注浆装置喷射清水进行冲洗扩孔置定孔制浆喷射注浆 旋转提升冒浆 4.2 施工工序4.2.1根据施工场地环境，挖掘泥浆池，排污沟、集水坑。4.2.2建立孔口注浆装置在桩芯钻孔或利用原抽芯钻孔，在孔口注浆。孔口注浆在桩顶注浆，采用水泥浆。4.2.3冲洗扩孔采用高压旋喷方式喷射清水及压缩空气进行冲洗扩孔：先采用压缩空气对缺陷位置进行冲洗，喷射清水时需按设计规定的工艺参数（喷射水压力25MPa、空气压力0.71.0Mpa、直至孔口返出清水为止

16、。经喷射清水洗孔后，可扩大喷射直径和增加固结体的强度。4.2.4制浆1）注浆材料采用42.5R普硅水泥，购置的材料须有出厂合格证明、化验单，每批水泥使用前，均须按质检要求取样检验。2）水泥浆的水灰比为0.7，水泥浆液宜在搅拌60min内，使用完毕。3）水泥浆搅拌用水必须符合混凝土拌合用水标准JTJ63-89的规定。4）输送浆液的管路不宜过长，以减少沿程损失，造成实际喷射压力降低的后果。液找成水进4.2.5喷浆是否畅通，所有准备1）喷浆前须检查输浆系流工作是否就绪。2）喷浆嘴必须贯至孔底，达到设计位置。3）喷射注浆结束后，及时清洗管路以免堵管。通常是把浆行连续冲洗，直到管路中出现清水为止。4.2

17、.6采用注浆方式进行高压注浆逐渐增加浆液浓度及加大注浆压力，直至设计注浆量和注浆压力为止。4.2.7封孔静压注浆结束后，需补灌浆液到注浆孔内浆液饱满为止。4.2.8施工中异常情况处理1）流量不变而压力突然下降时，应检查各部的渗漏情况，必要时拔出注浆管，检查密封性能。2）出现不冒浆或断续冒浆时，则应不提注浆管继续注浆直至冒浆为止。3）出现大量冒浆压力下降时，应拔出注浆管检查是否被击穿。5、泥浆处理1）回浆比重不得小于1.3。2）所有回浆、泥浆及废水等必须经排污沟流入泥浆池，不得随意排放。3）排污沟需经常清理，保持畅通，泥浆池须及时清理，不得出现污泥（水）溢流现象。4）回浆中水泥含量较高时，应考虑

18、回浆利用四、施工技术措施及质量管理高压注浆补强加固桩基属隐蔽工程，施工时不能直接观察到它的质量，必须严格管理好各工序操作、工艺参数等的执行，为此我公司采取如下措施：1、建议技术管理责任制，施工员及质检员等进行跟班监督指挥，并随时反馈信息。施工中，接受甲方的监督，发现问题，及时向甲方汇报，并及时采取措施解决。整个施工中，实施如下图所示质量监理系统。2、质量控制1）洗孔：针对抽芯揭露的缺陷位置，反复冲洗，直至孔口返清水为止。2）注浆管插入深度：桩底缺陷桩，插至桩底，反复喷浆。3）随机抽查水泥浆密度，判定是否符合设计要求。4）通过分析回浆量及其成分，了解加固效果。5）注浆管提升速度和旋转速度有专人抽

19、查。6）出现漏浆或堵管堵孔情况，必须立即停机检查。3、施工管理1）材料管理注浆材料的优劣是加固质量的关键问题之一。每批水泥进场时需要水泥出厂生产合格证，化验单。在现场对水泥要严加保管，不得受潮。2）施工参数的管理施工时要对各孔的高压喷射参数进行检查，以确保施工的质量。3）资料管理应在专门的表格上，如实记录下施工的各项参数的详细描述喷浆时的各种现象，做到每孔高压喷射注浆都有记录。五、劳动组织及施工进度安排1、实行项目经理负责制，成立该工程施工管理小组，由项目经理全面负责，并设技术负责1人，施工员1人，质检员1人，材料员1人，共5人。2、机台工人3、组织机构及管理体系：4、施工进度安排计划工期为1

20、天。六、安全及环境卫生1、安全操作管理旋喷机械，系采用高压喷射为主的手段，因此，安全操作是施工中的主要问题之一。为此，要求施工人员的管理人员做到以下几点：1）思想上树立质量第一，安全第一的意识。坚决贯彻安全第一，预防为主的方针。2）施工人员作业时必须穿戴好劳动保护用品，听从安排，严禁违章作业。3）要求操作人员具有熟悉的操作技能。4）在使用旋喷设备时注意：首先必须认真全面地检查和清洗泥浆泵、管路等设备，防止泵体内有残渣和铁屑存在，各类密封圈必须完整良好，无泄漏现象。有关设备安全阀中的安全销要进行试压检验，必须确保在达到规定最高压力时，能断销卸压，决不能轻易安装未经试压检验的自制安全销，以免安全销

21、不起安全作用。指定专人司泵。压力表应定期检修、保证正常使用。下班前对泵内、管路等必须清洗干净。 高压泵司机和钻机司机、浆液搅拌组等应密切联系配合协作，一旦某部发生故障，应及时联系停泵停机，及时排除故障。高压胶管在使用时，不应极端变曲，以免产生早期疲老损坏。2、环境卫生1）树立文明施工意识，做到常整理，勤打扫，保持施工生产场地整洁、卫生。2）材料堆放整齐，机具摆设有条不紊，严禁脏、乱、杂现象出现。3）设置畅通的排水、排污沟，坚决杜绝污泥水溢流施工场地和现象。accident responsibility, give notice of criticism and 50-100 economic

22、sanctions against them. (4) to conceal the accident, reported without undue delay or false, to inform the administrative leadership of the criticism, resulting in serious consequences, the pursuit of leadership, along with 500-1000 punishment. (5) significant near miss should be attempted as the cas

23、e of responsible for the accident and construction team injuries accident penalty provisions, mutatis mutandis. Eight, should perform in the construction standards and specifications, serial number a 1 GB3323-2005 steel fusion welded butt joints, welding engineering-Ray lighting and quality rating o

24、f 2 GB11345-89 steel welds manual 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 st

25、eel 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 wel

26、ded 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 steelend to form a proper understanding. Methodology refers to methods of knowing t

27、he world, transforming the worlds theory. Historical materialism tells us that social development, leave is impossible; all social progress, leaving people unable to achieve. We do anything, must first of all take into account the human factor, to find ways to give full play to the initiative and hu

28、man creativity, mobilizing peoples enthusiasm. This is the result of numerous historical practice of most of the scientific method. Emperor TaizongThe world of excellence into my opponent and Zhenguan rule, Qing Zeng Guofan to more aides for the first prerequisite Zhong XING Ming Chen, are insisting

29、 on methodology of successful models. Promoting the reform and development, construction of well-off, more demands that we as a people-oriented scientific method. We do work in the countryside, it is necessary to put farmers first we engage in State-owned enterprise reform, we must regard expanding

30、employment as an important goal we created urban, optimization-Habitat environment must be pursued. Promotion Office, too, only mans subject status, to achieve rapid development. Investee 2. people who responded to the question, and replied to questions depending on who. Who issues, is concerned wit

31、h the problem of the ruling party; depending on who issues are questions relating to the source of power of the ruling party. Look at the trend of the world, throughout the ages, no partys fate was not to be dominated by people, no Albert is not driven by the people of a nation. Our party has always

32、 attached importance to people, caring for people, his people as the coldest winter, parents of people as their own, but there were also some in adhere to people-oriented bias, war sufan expansion peacetime cultural revolution, has caused a great loss to the revolution and construction. Through hist

33、ory, our party proved that when people, caring for people, and along the way there is a powerful force; when to ignore peoples thinking, to ignore the interests and needs of the people, the partys cause will suffer setbacks. People-oriented, power for the people, this is the most fundamental rules g

34、overning laws, large and small, every aspect is also ruling is the most essential requirements. Set up the people-oriented concept of governance, requires us to establish the main position, everything for the masses, rely on the masses, and consciously do right for the people, show concern for the b

35、enefit of people and bring benefit to the people, real people as masters of the country, construction of the main body and the cause of main. From this perspective, adhere to the people-oriented and that is power for the people is to uphold the mass viewpoint and the mass line of the party. Office w

36、ork is serving the overall work of the party. Only around the service objects, service, relying on the service principal to the service in order to Shun Water push the boat, a long-term perspective, creating impressive performance. Investee 3. people responded to a question of values, again answering Outlook on questions. Values and Outlook are an organic unity, and Outlook