li基坑变形及建筑物沉降观测技术标.doc
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1、arrangements for the cause of socialism with Chinese characteristics, and improve the clarity of the strategic position of ecological civilization construction, to mobilize the whole party and people of all ethnic groups to promote the Socialist cause with Chinese characteristics. (E) enrich and per
2、fect the partys construction overall requirements of strengthening and improving party building, the party became the Socialist cause with Chinese characteristicsStrong core of leadership of the party and the new national cause from victory to victory the fundamental guarantee. Under the new situati
3、on, ruling party faces test, the reform and opening up and developing the market economy test, the external environment is a long-term, complex, serious, spirit slothful danger danger, insufficient capacity, divorced from the masses risk, passive corruption risks more sharply in front of the party.
4、Constantly improving the partys leading and ruling level and improve the ability to resist corruption and risk, is a consolidation of the partys ruling status, achieving the Mission of power must resolve a major issue. Outline of new Constitution in part on strengthening and improving party building
5、 put forward a series of new demands, stressed the need to strengthen the partys governing capacity-building, the construction of the advanced nature and purity, promoting the partys ideological building, organizational building, a building style, anti-corruption, institutional building and improvin
6、g party construction more scientific level, learning, service and innovation of Marxism party in power. Basic requirements of party building, emphasizing the whole party with Deng Xiaoping theory and the three represents important thought and scientific view of development and the basic line of the
7、party unity, unified action further emphasizes the pragmatic, emancipate the mind, and seeking truth from facts, keep pace with the tied for second as the partys construction of the basic requirements; increased wrote respect for party members, strengthen the supervision of major leading cadres. New
8、 Constitution on party of construction General requirements full of these new content, concentrated reflected has strengthening party of ruling capacity construction, and advanced and purity construction this article mainline, reflect has party of 17 big yilai party of construction made of major the
9、ory innovation results and important practice experience, reflected has we party on Marx doctrine ruling party construction law awareness of deepening, conducive to further strengthening and improved party of construction, should party faced of test and risk, effective improve party of ruling capaci
10、ty, keep and Development Party of advanced, and purity, With the spirit of reform and innovation to promote the new great project of party building, continuously enhance the creativity, rallying power and combat effectiveness. (F) on the absorption of some of the provisions have been amended as appr
11、opriate summarizing successful experience in recent years, party building, and links up with a part master changes 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
12、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
13、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,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(GB500
14、07-2002);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(JGJ112-87)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
15、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
16、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
17、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
18、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
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