ku基坑变形及建筑物沉降观测技术标.doc

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1、For ensure two learn a do learning education made effectiveness, promote all members consciously respected Constitution, and comply with party rules, with XI General Secretary series important speech spirit armed mind, and guide practice, and promoted work, do qualified Communist, according to Commu

2、nist 2016 city education information work special self-examination report XX City Bureau, and XX city government education steering mission: according to XX Province Government Education Steering Committee Office on carried out province education information work special Steering check of notificati

3、on ( Teach SC letter x 20164) documents, about quickly organized in our city Education Bureau Department in charge of the supervision standards for learning and study of informatization of education in charge of primary and middle schools in the city led by specialized training, issued a notice of m

4、eeting, special supervision and school self-assessment form. The school at the time of preparation, special organizational self-assessment. City Bureau organization about personnel in school since assessment of based Shang for has summary and self-examination, now will situation reported following:

5、a, and led attention according to Ministry of education on issued Liu Deputy Prime Minister in second times national education information work videophone Conference Shang speech of notification (taught technical 20156,) of file spirit, I City Government is in charge of led and education administrat

6、ive sector main head height attention, learning convey has central led in first international education information Assembly speech spirit, Learning to communicate the spirit of the second National Conference on videophone education information and instructed relevant departments according to the do

7、cument, has developed the education development plan of the city. Second, overall management, coordination, establish management systems and propulsion mechanisms XX education started in the proceedings of the XX Party 200311 working arrangements, XX municipal party Committee Municipal Government at

8、tach great importance to education information, education information development into the citys overall planning, education as a breakthrough in the construction of educational modernization in advance XX, city leaders often goes into the front line of education guide education work and financially

9、 guaranteed. Equipment improvement, application is the power education development. To tube easy good information technology equipment, XX City used layered is responsible for, and unison of strategy initiatives: that Bureau established information work led group, urged city education information ma

10、nagement and application work, education information and equipment Center is responsible for equipment maintenance, built information work platform, guarantee platform normal run; will electronic Chief, and personnel, and results, and student, and Senate, and assets, management field of information

11、application decomposition to Bureau Office, and personnel section, and manages, and education section, and meter fiscal section, functions Department, To drive forward e-Government as a breakthrough in the informatization of education, education administrators into full play in the education of info

12、rmation guidance and example, and take this opportunity to point to gradually expand the scope of education application of information technology. Formed Department personnel grasp business and educational information development and application; application and 中国四川省成都市成都汇日国际广场项目沉降观测及基坑变形监测技术标中国建筑西

13、南勘察设计研究院有限公司2012年04月24日目 录1、 设计方案2、 主要施工机械设备表3、 拟投入本项目的人员一览表4、 近三年类似业绩5、 企业资质文件中国四川省成都市成都汇日国际广场项目沉降观测及基坑变形监测设计方案总 经 理：赵 翔总 工 程 师：康 景 文审 定：胡 文 开 公 司 经 理：余 元 辉审 核：胡 文 开方 案 编 制：陈 凯中国建筑西南勘察设计研究院有限公司2012年04月24日目 录1.前言31.1工程概况31.2编制依据31.3监测目的31.4监测项目42.监测技术方案42.1基坑水平位移监测42.1.1布点方案42.1.2仪器选择及观测方法52.1.3监测周期

14、52.1.4监测警戒值52.1.5提交资料62.2建筑物沉降观测62.2.1布点方案62.2.2仪器选择及观测方法62.2.3监测周期72.2.4监测警戒值72.2.5提交资料73.监测组织机构设置73.1日常监测工作小组73.2监测工作的日常管理84.应急预案8附：1、沉降观测及基坑变形监测平面布置图1.前言1.1工程概况成都汇日星河房地产有限公司拟开发的汇日国际广场项目位于成都市人民南路三段三号，小天竺街北侧。该项目占地约40583平方米，总建筑面积约53万平方米。主要由6层商业裙楼及4栋住宅、1栋酒店、2栋办公楼等七栋高层建筑（主楼）组成，主楼33-38层，总高度约130米至150米不等

15、，均设5层地下室。根据总平图及基础开挖设计图，本工程0.00绝对标高为499.85，场地坑边地坪标高约499.35，地下室大底板开挖底标高-24.50(绝对标高475.35)。支护深度约在坑边地坪下24m。1.2编制依据建筑基坑支护技术规范（JGJ120-99）；建筑地基基础设计规范（GB50007-2002）；成都地区建筑地基基础设计规范（DB51/T5026-2001）；工程测量规范（GB50026-2007）；建筑变形测量规范（JGJ8-2007）；建筑基坑工程监测技术规范（GB 50497-2009）（以下简称规范）建筑边坡工程技术规范（GB50330-2002）建筑桩基技术规范（JG

16、J112-87）膨胀土地区建筑技术规范（GBJ112-87）工程建设标准强度性条文高层建筑建筑施工手册建筑施工安全检查标准（JGJ59-99）甲方提供的总平图和基坑支护平面布置图1.3监测目的在基坑开挖的施工过程中，基坑内外的土体将由原来的静止土压力状态向被动和主动土压力状态转变，应力状态的改变引起土体的变形，即使采取了支护措施，一定数量的变形总是难以避免的。这些变形包括：周边建筑（构筑）物、地面以及管线的沉降和位移；基坑支护结构的沉降和位移；周边土体的位移等。无论哪种位移的量超出了容许的范围，都将对基坑支护结构和周围结构与管线造成危害。因此，在基坑施工过程中，只有对基坑支护结构、周边土体以及

17、相邻建筑物进行综合、系统的监测，才能对工程情况有全面的了解，确保工程的顺利进行，对基坑施工过程进行监测的目的如下： 根据现场监测数据与设计值（或预测值）进行比较，如超过某个限值，就采取工程措施，防止支护结构破坏和环境事故的发生。保证支护结构和相邻建筑物的安全；验证支护结构设计，指导基坑开挖和支护结构的施工；总结工程经验，为完善设计分析提供依据。我司根据设计文件的技术要求和相关规范的要求，并结合现场实际情况，编制本专项监测方案。1.4监测项目根据相关要求，确定本项工程监测内容如下： 基坑变形监测； 沉降观测；2.监测技术方案2.1基坑水平位移监测2.1.1布点方案拟在现场布设3个平面基准点。基准

18、点的布设位置根据现场实际情况而定，布设位置考虑选在基坑变形影响区以外、不受施工破坏的稳固地方，并且便于联测。监测基准点布置在牢靠、通视条件好，同时又尽量处于比较隐蔽，人员车辆不会经过的地方，以利于基准点的保护。基坑土方开挖施工前对所有基准点监测两次，以保证观测的正确性。根据相关规范和本工程实际情况，在基坑边上共布设35个变形监测点。点位布置详见基坑变形监测点平面布置平面图。2.1.2仪器选择及观测方法本工程主要采用极坐标法进行水平位移观测，即：在工作基点上安置全站仪，用四测回测定观测点的水平角度及水平距离，可计算出观测点的坐标值，与上期观测值进行比较得出本次观测水平位移量，与其初始值进行比较计

19、算出累计水平位移量。坐标系统可采用平行于基坑边的坐标系统。本次监测中水平位移采用GTS-336N全站仪，主要技术指标为：望远镜放大倍数：30倍；测试距离(三棱镜)：3.5km；测距精度：lmm+1ppm；测角精度：0.5。在监测过程中，为了保证数据的准确性，保证仪器固定、人员固定、监测方法和监测路线固定。2.1.3监测周期监测频率应按照成都市及相关规范、规程的要求，土方开挖深度5m以内，每两天观测一次，土方开挖深度5.0m10.0m期间每天观测一次，土方开挖深度10.0m至开挖到设计标高期间每天观测两次。地下室底板浇筑后7天内每天观测一次，浇筑714天内每三天观测一次，浇筑1428天内每五天观

20、测一次，28天后可每十天观测一次。若遇阴雨天气或出现异常情况时，应有效增加观测次数。2.1.4监测警戒值根据GB50497-2009，本工程为一级边坡，基坑报警值见下表：报警值监测项目累计报警值（mm）变化数率报警值（mm/d）备案基坑水平位移302-32.1.5提交资料监测数据在观测1日后及时提交基坑设计单位，便于设计单位分析整理，及时指导下一步施工。主要提交内容有：监测点及观测点平面布置图，水平位移观测图，水平位移观测成果表，技术报告4份。2.2建筑物沉降观测2.2.1布点方案基准点的布设位置根据现场实际情况而定，布设位置考虑选在基坑变形影响区以外、不受施工破坏的稳固地方，并且便于联测。监

21、测基准点布置在牢靠、通视条件好，同时又尽量处于比较隐蔽，人员车辆不会经过的地方，以利于基准点的保护。对所有基准点监测两次，以保证观测的正确性。建筑物监测点点位布设选择在建筑物拐角等能反映建筑物变形的敏感部位，地面监测点选择在对应基坑易变形的重点。每日对所有监测点进行巡视，发现有松动、毁坏等现象时，及时对点位进行重新布设，并立即重新测初始值。根据相关规范和本工程实际情况，共布设34个沉降观测点。点位布置详见沉降观测及基坑变形监测平面布置图。2.2.2仪器选择及观测方法沉降观测使用DS05平板测微仪精密电子水准仪及铟钢水准标尺进行沉降观测。仪器最小分辨率为0.1mm，仪器及标尺都在检验有效期内使用

22、，并在作业期间定期进行检查校正。每次观测都采取单路往返闭合法，从基准点起测，依次测出每个监测点的高程，并与上次观测高程及初始高程进行比较。为了保证观测的精度，在观测过程中保证观测人员固定、仪器及附属设备固定、安置的镜位固定、观测方法及程序固定。2.2.3监测周期每施工三层监测1次，工程封顶时观测1次，主体工程封顶后半年内观测2次，直至到达稳定停测标准为止（0.2mm/d）。2.2.4监测警戒值根据相关规范的规定及设计院的设计要求监测。2.2.5提交资料监测数据在观测1日后及时提交基坑设计单位，便于设计单位分析整理，及时指导下一步施工。主要提交内容有：沉降观测成果表，沉降观测点位分布图，v-t-

23、s(沉降速率、时间、沉降量)曲线图，沉降观测分析报告，控制点及监测点布置总平图。提交测试成果报告份数：4份。2.3锚杆内力监测2.3.1监测原理及方法通过锚索测力计监测预应力锚索的拉力。锚索测力计的基本原理是在承压筒体上安装高稳定性、灵敏度的应变弦式传感器或应力传感器，一般认为技术成熟的弦式传感器具有比应变片更好的零点稳定性以及更强的抗干扰能力，同时其信号输出是频率而不是电压，频率信号能够长距离传输而不会由于电缆电阻，接触电阻变化引起明显的衰减等特点。本次监测采用的是三弦式锚索测力计。测力计出厂之前，由厂家提供传感器的标定曲线。图1为MXR-1020锚索测力计示意图。通过监测锚索测力计振动频率

24、的变化，经过计算得到锚索中的拉力。锚索测力计在锚索施工完成，锚索张拉时进行安装，传感器位于锚具和垫板之间，固定在预应力锚索锚固板的下部。图1安装在锚头下的锚索测力计 MXR-1020锚索测力计的主要参数如下： 测量范围： 1000kN 分辨力： 0.08%F.S 综合误差： 2.0%F.S 工作温度：-25+602.3.2监测数量及频次按招标文件要求对6根桩进行锚索内力监测，每个拟测的预应力锚索在锚头位置布置1个锚索测力计。根据招标文件，基坑安全等级为一级，基坑允许暴露时间约12个月（从基坑开挖、支护完成后计算）。本工程基坑监测周期按预计150天（其中基坑工程施工工期150天，至土方回填完毕预

25、计150天。依据建筑基坑工程监测技术规范(GB50497-2009)）及设计要求，监测频率安排如下：现场监测频率表基坑类别施工进度基坑设计深度（m）15m一级开挖深度（m）51次/2d5101次/1d102次/1d底板浇筑后时间（d）72次/1d7141次/1d14281次/1d281次/3d3.监测组织机构设置3.1日常监测工作小组 针对本工程监测项目的特点建立监测小组，成员由多年从事工程施工及监测经验的技术人员组成，组长由具有丰富施工经验，具有较高结构分析和计算能力的工程师担任。监测小组在组长的领导下负责日常监测工作及资料整理工作。监测组织机构及监测小组人员构成如下： 主要管理人员汇总表名

26、称姓名职称主要资历、经验及承担过的项目项目经理余元辉高级工程师大学本科，从事岩土工程工作22年技术负责人（变形监测）胡文开高级工程师大学本科，从事岩土工程工作24年现场负责人（变形监测）常 森助理工程师大学本科，从事岩土工程工作7年拟派现场主要施工人员姓 名职 称担任职务常 森助理工程师测 量 员陈晶炜助理工程师记 录周 维助理工程师立 尺陈 凯助理工程师安 全 员3.2监测工作的日常管理为保证监测数据的真实可靠及连续性，特制定以下各项质量保证措施：监测组与监理工程师密切配合工作，及时向监理工程师报告情况和问题，并提供相关切实、可靠的数据和记录。测点布置力求合理，能反映出施工过程中结构的实际变

27、形及对周围环境的影响程度。监测仪器确保是正规厂家的合格产品，并定期校核、标定。测点埋设达到设计要求的质量。并做到位置准确，安全稳固，设立醒目的保护标志。保证监测人员的相对固定，保证数据资料的连续性。制定监测、保护措施，做好监测控制点，并记录原始数据备案。监测数据均现场检查、室内复核后方可上报；如发现监测数据异常，立即复测，并检查监测仪器、方法及计算过程，确认无误后，立即上报给甲方、监理及单位主管，以便采取措施。4.应急预案1、根据基坑监测设计，当监测值达到或超过监控值时，应加密观测次数，同时启动下列抢险预案：暂停护壁及土石方开挖施工，并快速查明监测值超过监控值的原因。针对基坑变形过大的具体原因

28、及时采用增加锚索预应力、土石方回填反压等单项或综合措施进行抢险。2、如果在施工过程中由于地震、洪水等因素导致基坑垮塌时，拟采取以下抢险措施：突发灾害后，应立即组织成立抢险领导小组，并上报有关组织部门和相关领导。临时设立警戒线，禁止非相关人员和财产进入灾害危险区域。成立临时治安纠察队，维护社会治安和公共财务安全，防止有人乘机偷盗、哄抢公共财物，避免发生社会不稳定因素。根据实际情况，加强临时排危措施，如疏导地表水，卸坡减载、坡脚反压、临时支撑等排危措施。现场安排一辆汽车待命，一旦出现人员伤亡事故，项目部将以最快的速度将伤员送至距离现场最近的医院进行抢救。3、遇到暴雨季节及地下水位涨落大、地质情况复

29、杂等情形，加大对基坑和周围环境的沉降、变形、地下水位变化的观测频次，发现异常情况及时上报，并做好有效的防范措施。demonstration of information work is education, promotion and development of education information managers. Turns out, this working party . Ming Associate Professor several times to XX chuanjingsongbao. May 2014 XX received State Council exper

30、t group to the City County acceptance of balanced development of compulsory education in the country, the Group of experts on XX education informatization on the balanced development of education give full recognition to the role. On October 9, 2014, the CPPCC inspections XX in XX city education inf

31、ormation and XX education highly. On April 20, 2016, the XX as a unit of the first experimental informatization passed inspection. In acceptance of the conclusion of the expert group, wrote: 1. the project around the construction of pilot objectives, tasks and main content, scientific formulation an

32、d implementation of programmes, and promotes the balanced development of urban and rural education based on information technology, completing various tasks of the pilot project. 2. adjusting measures to local conditions, innovative institutional mechanisms, by exploring the investment protection me

33、chanism, system security mechanisms, the task to lead the mechanism, mechanism and application integration mechanisms, operation and maintenance of departmental interaction mechanisms , developed educational information resources sharing, promoting fair education, improve the quality of education, p

34、romoting the reform of education and teaching, distinctive effective patterns and operating mechanism. 3. through the implementation of the pilot project, building a nationwide network of high quality educational resources sharing environment, construction and application of both cloud platform, the

35、 e-learning space through education and public service platform of educational resources, promote the integration of information and depth of education, and progressive education application of information technology to become the norm. Popularization and application of the results of project pilot

36、has better value to promoting informatization of education in the County with a demonstration . February 24, 2014, in Education Department Office on education information pilot units work progress situation of informed (taught technical office letter (2014) 13th,) in the, XX province XX City Bureau

37、introduced market competition mechanism, and more than enterprise signed cooperation agreement, low cost built cover City School of fiber Education City domain network and achieved broadband access, to achieved has regional within all schools, and all classroom of broadband network access as typical

38、 case in national informed. Three XX municipal party Committee municipal education information development, policy measures included in the citys development plan, formulated education plan, and guaranteed on the funds. According to the Ministry of education documents and XX actual, Education Bureau

39、 of XX municipality formulated XX City Informatization of education three-year development plan for the XX teaching information application of the three-year planning document, guide the education information construction. Early education work priorities, specifically the inclusion of educational information construction areas, and application of information technology and construction in special steering steering room, and at the time of the annual assessment as an important indicator of school assessment. Since 2008, the citys education