i筍洪區(qū)間彩虹橋樁基托換安全專項(xiàng)施工方案8.11

1、Good is good, but better carries it.精益求精，善益求善。i筍洪區(qū)間彩虹橋樁基托換安全專項(xiàng)施工方案8.11i筍洪區(qū)間彩虹橋樁基托換安全專項(xiàng)施工方案8.11目 錄一、編制說明- 1 -1、編制依據(jù)- 1 -2、相關(guān)規(guī)范- 1 -二、工程概況- 2 -1、地理位置- 2 -2、設(shè)計(jì)情況- 2 -2.1 托換基坑設(shè)計(jì)- 2 -2.2 托換樁設(shè)計(jì)- 3 -2.3 托換梁設(shè)計(jì)- 3 -2.4 托換梁和被托換樁的連接- 4 -3、工程水文地質(zhì)- 4 -3.1 工程地質(zhì)- 4 -3.2 水文地質(zhì)- 4 -3.3 特殊土與不良地質(zhì)- 4 -4、周邊建（構(gòu)）筑物- 4 -5、管

2、線情況- 5 -6、工程重難點(diǎn)- 6 -7、主要工程數(shù)量- 8 -三、施工總部署- 9 -1、組織機(jī)構(gòu)設(shè)置- 9 -2、資源配置- 11 -2.1 人員配置- 11 -2.2 機(jī)械設(shè)備配置- 12 -2.3 材料計(jì)劃- 14 -3、施工進(jìn)度計(jì)劃- 14 -四、總體施工方案- 14 -1、施工步驟- 14 -2、總體施工流程- 15 -五、主要施工方案- 16 -1、圍護(hù)結(jié)構(gòu)及托換樁施工方案- 16 -1.1 鉆孔樁施工- 17 -1.2 旋噴樁施工- 26 -1.3 冠梁及砼支撐施工- 30 -2、基坑開挖及基坑支護(hù)方案- 31 -2.1基坑開挖- 31 -2.2 基坑支護(hù)- 35 -3、樁基

3、托換施工方案- 38 -3.1 托換樁樁帽施工- 38 -3.2 原橋墩連接部位施工- 40 -3.3 樁帽連接部位預(yù)置- 42 -3.4 托換梁施工- 44 -3.5 頂升施工- 50 -3.6 樁帽與托換梁連接體施工- 55 -3.7 截樁- 57 -3.8 基坑回填- 58 -4、周邊建筑物保護(hù)- 58 -4.1 周邊建筑物保護(hù)概述- 58 -4.2 跟蹤注漿措施- 58 -六、施工監(jiān)測- 61 -1、監(jiān)測內(nèi)容及項(xiàng)目- 61 -2、監(jiān)測工藝流程- 62 -3、監(jiān)測方法- 63 -3.1 安全巡視- 63 -3.2 樁頂水平位移和沉降監(jiān)測- 64 -3.3 地下水位觀測- 66 -3.4

4、地表沉降- 67 -3.5 周邊建（構(gòu)）筑物監(jiān)測- 67 -3.6 支撐軸力監(jiān)測- 75 -3.7 橋梁應(yīng)力監(jiān)測- 75 -3.8 托換梁變形監(jiān)測- 76 -3.9 托換梁應(yīng)力監(jiān)測- 76 -3.10 托換梁傾斜監(jiān)測- 76 -3.11 被托換樁臨近非托換舊樁應(yīng)力監(jiān)測- 77 -3.12 被托換樁上部橋墩豎向位移監(jiān)測- 77 -3.13 新樁樁頂與托換梁之間位移監(jiān)測- 77 -3.14 橋梁傾斜監(jiān)測- 78 -4、警戒值、控制值及監(jiān)測頻率- 78 -5、信息化管理- 79 -5.1 信息化施工的步驟- 79 -5.2 托換新樁施工階段- 82 -5.3 預(yù)頂升、截樁階段- 82 -5.4 隧道

5、施工階段- 83 -5.5 其它現(xiàn)場數(shù)據(jù)測試- 83 -七、質(zhì)量保證措施- 83 -1、質(zhì)量目標(biāo)- 84 -2、工程質(zhì)量保證體系- 84 -2.1 質(zhì)量保證體系的建立- 84 -2.2 質(zhì)量保證體系的運(yùn)行- 87 -2.3 建立健全質(zhì)量管理制度- 88 -3、工程質(zhì)量保證措施- 88 -3.1 質(zhì)量組織保證- 88 -3.2 質(zhì)量技術(shù)保證- 89 -3.3 質(zhì)量過程控制- 91 -八、安全保證措施- 96 -1、安全目標(biāo)- 96 -2、工程安全保證體系- 96 -3、工程安全保證措施- 98 -3.1 安全教育、安全交底和安全檢查- 98 -3.2 安全生產(chǎn)保證措施- 98 -九、夏季和雨季施

6、工- 101 -1、夏季施工- 101 -2、雨季、臺風(fēng)施工- 101 -2.1基坑開挖雨季、臺風(fēng)季節(jié)施工保證措施- 102 -2.2防洪渡汛保證措施- 102 -十、文明、環(huán)保施工- 103 -1、文明施工措施- 103 -1.1 工點(diǎn)管理- 103 -1.2 現(xiàn)場物資管理- 104 -1.3 現(xiàn)場機(jī)械管理- 104 -1.4 辦公、生活設(shè)施- 104 -1.5 建設(shè)工地良好的文明氛圍- 104 -1.6 現(xiàn)場安全、保衛(wèi)、衛(wèi)生- 105 -2、環(huán)境保護(hù)措施- 105 -2.1 預(yù)防噪音的措施- 105 -2.2 揚(yáng)塵以及大氣污染控制措施- 106 -2.3 地表水和地下水污染的預(yù)防措施- 1

7、06 -2.4 棄碴和建筑垃圾處理- 106 -2.5 城市生態(tài)環(huán)境控制措施- 107 -十一、應(yīng)急預(yù)案- 107 -1、應(yīng)急組織機(jī)構(gòu)- 107 -1.1 應(yīng)急救援組織機(jī)構(gòu)- 107 -1.2 應(yīng)急救援組織機(jī)構(gòu)人員構(gòu)成- 108 -2、應(yīng)急計(jì)劃與建立- 112 -2.1危險(xiǎn)源的風(fēng)險(xiǎn)評估- 112 -2.2應(yīng)急反應(yīng)行動的資源配置- 112 -2.3建立危險(xiǎn)辯識體系- 112 -2.4應(yīng)急上報(bào)機(jī)制- 112 -3、針對性應(yīng)急預(yù)案- 112 -3.1 基坑坍塌事故應(yīng)急預(yù)案- 112 -3.2 基坑涌水事故應(yīng)急預(yù)案- 113 -3.3 周邊建筑物變形、裂縫應(yīng)急預(yù)案- 114 -3.4 防臺、防汛應(yīng)急預(yù)

8、案- 115 -3.5 觸電事故應(yīng)急預(yù)案- 116 -3.6 橋梁沉降應(yīng)急預(yù)案- 117 -4、應(yīng)急物資- 119 -4.1主要應(yīng)急物資配置- 119 -4.2應(yīng)急物資的保證措施- 120 -5、事故救護(hù)單位及救援路線- 120 - 127 -improve, security prevention capacity obviously enhanced, security hidden and security accident obviously reduced, effective guarantees information health development. XX Educati

9、on 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 equipme

10、nt 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 la

11、b 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 s

12、witches, 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

13、 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. Sc

14、hools (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

15、 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 educat

16、ion 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

17、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, time

18、ly 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 equi

19、pment 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 a

20、s 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

21、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 e

22、ducation 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

23、 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 r

24、espectively, 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

25、 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 city's total students 18.31 to (junior high school students in 30 above, students not required), regi

26、stration number to meet the requirements of teachers and students, in XX in first place. Five, information technology application capability as a means to boost teaching of teachers to use information, Education Bureau of XX title and modern educational technology teacher assessment levels linked to

27、 the examination; launched a provincial model school of modern education technology selection, advanced unit in education a year (individual) award. To expedite education informatization work, the city established the school running level of supervision and assessment system. Information education i

28、n school performance evaluation, education assessment information work more than to cut weight 10. Practice is a regular room supervision, education information steering, steering, steering with the end, principals of education information into performance assessment and school level monitoring and

29、evaluation, to develop a scientific, operational education information steering assessment methods, tracking management of education information and applications. By March 2016, 100 of the teachers, I participated in a national educational technology training for primary and secondary school teacher

30、s, the teachers have made to cut 80 primary and middle school teachers ' educational technology proficiency test certificate. At present, all schools have access to broadband networks. Training classification training of teachers, school teachers, academic leaders, information technology, teache

31、r training and network management personnel from the County, within the school back to school training once training is complete. Through this mode of classification training, information technology application capability training of teachers in our city reached 100. XX series of effective informati

32、on- 127 -筍洪區(qū)間彩虹橋樁基托換工程安全專項(xiàng)施工方案一、編制說明1、編制依據(jù) 國家現(xiàn)行的有關(guān)施工及驗(yàn)收規(guī)范、規(guī)則、質(zhì)量技術(shù)標(biāo)準(zhǔn)，以及深圳市在安全文明施工、環(huán)境保護(hù)、交通組織等方面的規(guī)定。 筍崗站洪湖站區(qū)間工程彩虹橋樁基托換工程設(shè)計(jì)圖。 深圳地鐵7號線BT項(xiàng)目合同文件、設(shè)計(jì)圖紙、勘察階段的巖土工程勘察報(bào)告及現(xiàn)場調(diào)查資料。 從事類似工程所積累的施工經(jīng)驗(yàn)和成熟的施工工藝。 我公司現(xiàn)有的施工機(jī)械設(shè)備及施工技術(shù)力量。 現(xiàn)行有效的國家、廣東省及深圳市有關(guān)地下工程設(shè)計(jì)、施工規(guī)范和規(guī)程。2、相關(guān)規(guī)范深圳市基坑支護(hù)技術(shù)規(guī)范 （SJG 05-2011）建筑地基基礎(chǔ)工程施工質(zhì)量驗(yàn)收規(guī)范 （GB50202-2

33、002）鋼筋混凝土工程施工及驗(yàn)收規(guī)范 （GB50204-2002）鋼筋焊接及驗(yàn)收規(guī)程 （JGJ18-2003）錨桿噴射混凝土支護(hù)規(guī)范 （GB50086-2001）施工現(xiàn)場臨時(shí)用電安全技術(shù)規(guī)范 （JGJ46-2005）建筑機(jī)械使用安全技術(shù)規(guī)程 （JGJ33-2001）混凝土結(jié)構(gòu)工程施工質(zhì)量驗(yàn)收標(biāo)準(zhǔn) （GB50204-2002）公路橋梁加固施工技術(shù)規(guī)范 （JTG/T J23-2008）混凝土強(qiáng)度檢驗(yàn)評定標(biāo)準(zhǔn) （GB/T 50107-2010）混凝土質(zhì)量控制標(biāo)準(zhǔn) （GB50164-2011）普通混凝土配合比設(shè)計(jì)規(guī)程 （JGJ55-2011）鋼筋焊接及驗(yàn)收規(guī)程 （JGJ18-2012）鋼筋機(jī)械連接技術(shù)

34、規(guī)程 （JGJ107-2010）建筑基坑支護(hù)技術(shù)規(guī)范 （JGJ120-2012）二、工程概況1、地理位置擬建深圳市軌道交通7號線工程筍崗站洪湖站區(qū)間位于深圳市羅湖區(qū)，起始于梅園路，東行下穿寶崗路、筍崗村、廣深鐵路及深圳北站、布吉河、洪湖公園濕地，止于田貝四路與文錦北路交叉口。筍崗站洪湖站區(qū)間線路在DK26+968DK27+052處沿彩虹橋西側(cè)引橋下穿過，受其影響，彩虹橋引橋有2處橋臺，6處橋承臺，共計(jì)16根樁基需托換，彩虹橋左右兩幅橋在托換處為3跨連續(xù)梁結(jié)構(gòu)。彩虹橋西引橋，抗震設(shè)防烈度7度，共兩聯(lián)，第一聯(lián)橋跨組成為25.03m+30.0m+25.0m，第二聯(lián)為單跨，跨度為28.0m。詳見附圖1

35、：筍洪區(qū)間彩虹橋樁基托換工程總平面圖2、設(shè)計(jì)情況2.1 托換基坑設(shè)計(jì)本工程共涉及彩虹橋西引橋4個墩臺的樁基托換（0#、1#、2#、3#基坑），各基坑設(shè)計(jì)情況如下： 0#基坑0#基坑南北兩側(cè)圍護(hù)結(jié)構(gòu)采用800mm鉆孔樁（托換梁外，伸入基底5m）/ 600mm鉆孔樁（托換梁處，伸入基底7.1m）+600 950mm旋噴樁支護(hù)，樁頂設(shè)置800×800mm冠梁?；?xùn)|側(cè)1:1放坡采取噴射砼支護(hù)，不設(shè)內(nèi)支撐?；悠矫娉叽?.4m*18.2m，基坑深度2.52.9m，托換樁樁帽小基坑深度1.5m。 13#基坑13#基坑圍護(hù)結(jié)構(gòu)均采用800mm鉆孔樁（伸入基底5m）+600 950mm旋噴樁支護(hù)，

36、內(nèi)支撐體系采用“2000×2000×300mm鋼筋混凝土板撐+600×800mm鋼筋混凝土斜支撐”，排樁頂設(shè)置800×800mm冠梁。1#、2#基坑平面尺寸14.87×15.47m，開挖深度4.85.3m，托換樁樁帽小基坑深度1.5m；3#基坑平面尺寸18.06m*15.46m，基坑平均深度5.7m，托換樁樁帽小基坑深度1.5m?；訃o(hù)樁均采用C30水下混凝土灌注；鋼筋采用HPB300和HRB335鋼筋；冠梁及內(nèi)撐采用C30混凝土澆筑；高壓旋噴樁采用42.5普通硅酸鹽水泥，水灰比1:1水泥漿。各基坑設(shè)計(jì)詳見附圖3、4：彩虹橋樁基托換工程0#、

37、1#基坑平面圖，彩虹橋樁基托換工程2#、3#基坑平面圖2.2 托換樁設(shè)計(jì)原設(shè)計(jì)情況0#基坑橋臺原設(shè)計(jì)為雙排12根1200mm樁基礎(chǔ)，其中中間4根樁基影響筍洪區(qū)間隧道，需進(jìn)行樁基托換。13#基坑橋墩原設(shè)計(jì)均為1200mm樁基礎(chǔ)，3個橋墩各有4根樁基影響筍洪區(qū)間隧道，需進(jìn)行樁基托換。托換樁設(shè)計(jì)情況0#基坑橋臺托換樁設(shè)計(jì)為4根1200mm鉆孔灌注樁，樁長27.5m，樁頂均設(shè)置2.2×2.2×1.5m樁帽。13#基坑橋墩托換樁設(shè)計(jì)均為4根1500mm鉆孔灌注樁，樁長分別為27.1m，27.4m，25.9m，樁頂均設(shè)置2.5×2.5×1.5m樁帽。托換樁均按嵌巖樁

38、設(shè)計(jì)，施工時(shí)樁長受樁尖所在持力層和低于區(qū)間左線盾構(gòu)底板雙控，樁基嵌入微風(fēng)化巖層不小于1.5m，且樁底標(biāo)高應(yīng)低于區(qū)間左線盾構(gòu)底板不小于1.5m。托換樁均采用C35水下砼灌注。2.3 托換梁設(shè)計(jì)0#橋臺采用加大原承臺截面法，橋墩樁基托換均采用井字型托換梁系，托換主梁截面2.5m×2.5m，按兩端簡支設(shè)計(jì)，托換次梁截面2.5m×2.0m，按兩端固結(jié)設(shè)計(jì)，由于墩柱底荷載大，托換梁跨度大，采用主動托換方式處理。0#基坑托換梁采用“ ”形狀，托換梁截面尺寸為2.4×3.6m，梁長18.2m；13#基坑托換梁采用“ ”形狀，主托換梁截面尺寸為2.5m×2.5m，次托換

39、梁截面尺寸為2.5m×2.0m，托換梁設(shè)置在既有橋墩之下，位置在盾構(gòu)結(jié)構(gòu)以上。各基坑托換樁、托換梁設(shè)計(jì)詳見附圖5、6：彩虹橋樁基托換工程0#、1#基坑樁基托換平面圖，彩虹橋樁基托換工程2#、3#基坑樁基托換平面圖。2.4 托換梁和被托換樁的連接托換梁和被托換樁之間通過咬合、界面處理和植筋連接，即在托換梁梁高范圍內(nèi)，把原樁表面鑿毛，鑿出25mm（深）×200mm（寬）的企口，并刷界面劑進(jìn)行界面處理；沿被托換樁周圍植筋，鋼筋和樁之間的縫隙用錨固膠充填。詳見附圖7：筍洪區(qū)間彩虹橋樁基托換工程植筋及企口構(gòu)造圖。3、工程水文地質(zhì)3.1 工程地質(zhì)根據(jù)地質(zhì)資料顯示，本工程地層從上至下依次

40、為素填土（平均厚1.85m）、粉質(zhì)黏土（平均厚3.65m）、砂質(zhì)黏土（平均厚10.75m）、全風(fēng)化混合巖（平均厚4.75m）、強(qiáng)風(fēng)化混合巖（平均厚10.3m）、中風(fēng)化混合巖（平均厚1.9m）、微分化混合巖（平均厚0.6m）。詳見附圖2彩虹橋樁基托換工程地質(zhì)縱斷面圖。3.2 水文地質(zhì)本工點(diǎn)地下水主要為第四系孔隙水及基巖裂隙水?？紫端饕x存在表層人工填土層、沖洪積砂層和殘積的砂質(zhì)黏性土中，略具承壓性，基巖裂隙水賦存于強(qiáng)風(fēng)化及中等風(fēng)化巖中，具承壓性。地下水位埋深約1.6m3.6m。3.3 特殊土與不良地質(zhì) 素填土：包含素填土、素填土（砂）、素填土（塊石）及雜填土，主要由可塑硬塑狀黏性土，粗礫砂、碎

41、石、塊石，混建筑垃圾及生活垃圾組成，土質(zhì)不均勻。 殘積土和風(fēng)化巖：花崗巖及混合巖殘積層均勻性較差，強(qiáng)度不一。花崗巖殘積層及全強(qiáng)風(fēng)化層具有一定臨空面或動水作用下軟化、崩解、強(qiáng)度急劇降低的特點(diǎn)，基坑開挖中應(yīng)及時(shí)封底、支護(hù)；強(qiáng)風(fēng)化巖具有軟硬不均特點(diǎn)。 風(fēng)化孤石：局部會存在不均勻風(fēng)化現(xiàn)象，全風(fēng)化及土狀強(qiáng)風(fēng)化巖中夾塊狀強(qiáng)風(fēng)化巖等。 4、周邊建（構(gòu)）筑物本工程周邊南北兩側(cè)建筑物密集，建筑物均為層民房，具體情況如下：基坑北側(cè)：3層居民房一棟，淺基礎(chǔ)深2m，距0#基坑2.3m；811層居民房4棟，樁基礎(chǔ)，距離基坑2.94m；基坑南側(cè)：4層居民房2棟，淺基礎(chǔ)深2m，距基坑2.02.4m；810層居民房4棟，樁基

42、礎(chǔ)，距離基坑1.25.2m；基坑?xùn)|側(cè)緊鄰廣深鐵路筍崗站站場。5、管線情況根據(jù)現(xiàn)場調(diào)查，彩虹橋樁基托換處場地內(nèi)管線有給水、電力、污水、雨水、電信等5種。施工前必須確定施工范圍內(nèi)所有管線遷改完畢，并先挖2m深的探溝，采用人工開挖，確定無管線后方可動工，以減少對基坑施工的影響。場地內(nèi)主要管線情況詳見下表：表2.5-1 彩虹橋樁基托換工程管線統(tǒng)計(jì)表管線名稱管線特征埋深(米)特性走向影響范圍遷改方案備注雨水管DN8001砼南北1#基坑2根圍護(hù)樁改遷至0#、1#基坑之間橫跨1#基坑污水管6001.3砼南北1#基坑3根圍護(hù)樁改遷至0#、1#基坑之間橫跨1#基坑電力低壓1.5塑膠南北1#基坑2根圍護(hù)樁懸吊保護(hù)

43、橫跨1#基坑10KV0.8塑膠南北1#基坑2根圍護(hù)樁改遷至0#、1#基坑之間橫跨1#基坑給水消防管200給水管1.7鋼管東西0#基坑北側(cè)8根圍護(hù)樁改遷至0#基坑北側(cè)東西橫跨0#基坑100消防0.3塑料南北0#基坑北側(cè)1根圍護(hù)樁改遷至0#、1#基坑之間斜跨0#基坑200給水1.3鋼管南北0#基坑北側(cè)2根圍護(hù)樁改遷至0#、1#基坑之間橫跨0#基坑100給水0.7鋼管南北1#基坑北側(cè)2根圍護(hù)樁1根托換樁改遷至0#、1#基坑之間橫跨1#基坑2根150給水0.6鋼管南北1#基坑北側(cè)、南側(cè)各2根圍護(hù)樁東側(cè)2根托換樁改遷至1#、2#基坑之間橫跨1#基坑1根100消防0.6塑料南北1#基坑北側(cè)、南側(cè)各2根圍護(hù)

44、樁、東側(cè)2根托換樁改遷至1#、2#基坑之間橫跨1#基坑通信通信（40孔）0.6塑料南北1#基坑改遷至1#、2#基坑之間橫跨1#基坑天威視訊0.6塑膠南北1#基坑懸吊保護(hù)橫跨1#基坑6、工程重難點(diǎn)根據(jù)對合同文件、施工設(shè)計(jì)圖紙和現(xiàn)場施工環(huán)境仔細(xì)分析和理解，我部對本工程重難點(diǎn)分析如下：表2.6-1 樁基托換工程重難點(diǎn)分析及對策表序號工程重難點(diǎn)主要對策1周邊建筑密集施工前對周邊建筑物進(jìn)行調(diào)查評估，了解建筑物現(xiàn)狀，并保留圖像資料；加強(qiáng)監(jiān)測，根據(jù)監(jiān)測結(jié)果調(diào)整施工方案，必要時(shí)進(jìn)行房屋加固注漿；選擇噪音小的施工工藝及機(jī)械設(shè)備，根據(jù)噪音監(jiān)測情況采取相應(yīng)的降噪措施；2橋下低凈空樁基施工地面降坡23m，沖孔機(jī)改裝為

45、4.5m高；鋼筋籠分節(jié)吊裝，每節(jié)3m；合理選擇大門的位置，便于物料、機(jī)械進(jìn)場；3托換樁質(zhì)量控制加強(qiáng)施工過程控制，避免樁位偏差、斜孔、縮徑和坍孔等現(xiàn)象；嚴(yán)格進(jìn)行成孔質(zhì)量驗(yàn)收，確保樁位偏差、保證成孔垂直度和樁底沉渣符合驗(yàn)收要求；灌樁作業(yè)時(shí)，做好施工組織和商品砼質(zhì)量控制，按施工方案要求進(jìn)行灌注作業(yè)，避免堵管和斷樁事故的發(fā)生；4托換梁大體積砼施工集料級配，含泥量滿足規(guī)范要求；選用低水化熱水泥，在滿足配合比規(guī)范和混凝土技術(shù)指標(biāo)的前提下，宜適當(dāng)減少水泥和水的用量，降低水灰比；梁體鋼筋內(nèi)設(shè)置冷卻管，混凝土澆筑完成后即通水冷卻；砼分層分塊澆筑，盡量避開高溫作業(yè)，振搗密實(shí)，不漏振、不過振，在滿足入模條件下，盡量

46、減小混凝土坍落度；及時(shí)養(yǎng)護(hù)，保證養(yǎng)護(hù)時(shí)間和質(zhì)量。5被托換樁界面處理及植筋聘請有專業(yè)資質(zhì)的單位進(jìn)行植筋施工；施工材料送檢合格后才允許使用；嚴(yán)格按照設(shè)計(jì)圖和施工規(guī)范進(jìn)行施工；嚴(yán)格按設(shè)計(jì)和規(guī)范要求的頻率進(jìn)行抗拔承載力驗(yàn)收6預(yù)頂力施加控制及體系轉(zhuǎn)換托換時(shí)的預(yù)頂作業(yè)，嚴(yán)格按照設(shè)計(jì)及規(guī)范要求和已批復(fù)施工方案的操作程序進(jìn)行分級加載作業(yè)；托換體系受力轉(zhuǎn)換過程中，嚴(yán)格監(jiān)測原樁、托換樁、托換梁（或托換承臺）的沉降、傾斜，保證加載過程的穩(wěn)定和平衡；7橋梁沉降控制施工前調(diào)查橋梁現(xiàn)狀，制定相應(yīng)的保護(hù)措施；嚴(yán)格按照設(shè)計(jì)數(shù)據(jù)進(jìn)行頂升作業(yè)，并根據(jù)監(jiān)測數(shù)據(jù)調(diào)整預(yù)頂力；加強(qiáng)監(jiān)測，隨時(shí)掌握橋梁的沉降、變形情況，并根據(jù)監(jiān)測數(shù)據(jù)采取針

47、對性的措施。8截樁結(jié)合現(xiàn)場地質(zhì)、施工條件，制定合理的截樁方案；截樁前對原樁沉降及新舊混凝土界面滑移做好觀；察，在切樁過程中實(shí)行不間斷觀測，做到信息化施工加強(qiáng)監(jiān)測，出現(xiàn)異常情況立即停止施工，分析原因，制定針對性的處理措施。9施工監(jiān)測按設(shè)計(jì)和規(guī)范要求編制、上報(bào)施工監(jiān)測方案；選擇有相應(yīng)資質(zhì)的第三方監(jiān)測單位；安排有經(jīng)驗(yàn)的監(jiān)測人員，并配備足夠的監(jiān)測儀器，按批復(fù)的監(jiān)測方案進(jìn)行監(jiān)測；及時(shí)進(jìn)行數(shù)據(jù)分析，根據(jù)監(jiān)測反饋的情況指導(dǎo)施工7、主要工程數(shù)量表2.7-1 樁基托換工程主要工程數(shù)量表序號項(xiàng)目名稱材料及規(guī)格單位數(shù)量備注1基坑開挖開挖土方m348902圍護(hù)結(jié)構(gòu)800鉆孔樁根2143600旋噴樁根472含破樁豎井4

48、樁間C20早強(qiáng)砼找平m3245冠梁及砼支撐m34206托換樁1200根40#基坑71500根1213#基坑8樁帽C50混凝土m31509鋼筋T3410托換梁C20墊層混凝土m348.511C50混凝土m3103012鋼筋T270.413托換梁與既有樁基連接界面鑿毛處理m2150.614鑿剪力槽m301.515植筋根433516鋼筋T9.417頂升部位施工樁帽粘貼鋼板m223.818托換梁底預(yù)埋鋼板m223.819支撐鋼管根4820機(jī)械安全自鎖裝置臺4821千斤頂（500t）臺4822樁帽與托換梁連接C50微膨脹混凝土m355三、施工總部署1、組織機(jī)構(gòu)設(shè)置根據(jù)本標(biāo)段工程的特點(diǎn)，成立“中國水電十四

49、局深圳地鐵7號線7306標(biāo)項(xiàng)目經(jīng)理部”，按項(xiàng)目法對本工程進(jìn)行管理，由項(xiàng)目經(jīng)理在項(xiàng)目上代表公司行使管理職能及履行合同的權(quán)力和義務(wù)，確保安全、優(yōu)質(zhì)、按期、文明地完成本工程項(xiàng)目的施工。項(xiàng)目經(jīng)理部下設(shè)九部一室五大隊(duì)，本工程屬第二工程大隊(duì)負(fù)責(zé)現(xiàn)場施工管理，各部室和工程大隊(duì)在經(jīng)理部的統(tǒng)一組織指揮下，分工協(xié)作，緊密配合，確保工程管理目標(biāo)的實(shí)現(xiàn)。同時(shí)，我部還委托具有豐富樁基托換施工經(jīng)驗(yàn)且具備相應(yīng)資質(zhì)的廣州市勝特建筑科技開發(fā)有限公司作為本工程托換施工的專業(yè)分包單位，該公司根據(jù)本工程情況進(jìn)行合理的人員配置。項(xiàng)目組織機(jī)構(gòu)如圖3.1-1所示，第二工程隊(duì)如圖3.1-2所示，專業(yè)分包方（廣州勝特公司）組織機(jī)構(gòu)見圖3.1-

50、3所示。圖3.1-1 項(xiàng)目組織機(jī)構(gòu)圖決策層管理層作業(yè)層工程技術(shù)部（龐林軍）總調(diào)度室（魏光輝）物資設(shè)備部（趙銳）對外協(xié)調(diào)部（黎立）財(cái)務(wù)管理部（張虎成）測量監(jiān)測部（唐德平）安全環(huán)保部（周躍飛）計(jì)劃合同部（張鵬）綜合管理部（孟楠楠）6人質(zhì)量管理部（許承虎）總工程師（付艷軍）總會計(jì)師（張虎成）副經(jīng)理常貴春、晏聯(lián)飛、李光耀黨工委副書記（蔣麗生）總經(jīng)濟(jì)師（劉琨陽）質(zhì)量安全總監(jiān)（趙玉林）項(xiàng)目經(jīng)理（劉士誠）專家咨詢組第一工程隊(duì)（董發(fā)?。﹪o(hù)結(jié)構(gòu)施工一隊(duì)（陳錫云）圍護(hù)結(jié)構(gòu)施工二隊(duì)（趙瑞峰）圍護(hù)結(jié)構(gòu)施工三隊(duì)（林國春）圍護(hù)結(jié)構(gòu)施工四隊(duì)（梁彪文）圍護(hù)結(jié)構(gòu)施工五隊(duì)（黎景麒）盾構(gòu)施工隊(duì)（王燦林）華海公司深圳地鐵項(xiàng)目部（孫

51、國茹）樁基托換施工隊(duì)（沈漢東）加固注漿施工隊(duì)（杜小軍）第二工程隊(duì)（劉立朋）第三工程隊(duì)（何洪發(fā)）第四工程隊(duì)（蒲 軍）第五工程隊(duì)（王燦林）圖3.1-2 第二工程大隊(duì)組織機(jī)構(gòu)圖項(xiàng)目總負(fù)責(zé)項(xiàng)目經(jīng)理項(xiàng)目技術(shù)負(fù)責(zé)人技術(shù)員材料員機(jī)電管理員資料員質(zhì)量員安全員各施工作業(yè)班組現(xiàn)場施工員3.2-3 樁基托換工程專業(yè)分包方組織機(jī)構(gòu)圖2、資源配置2.1 人員配置2.1.1 施工管理人員配備為加強(qiáng)對樁基托換工程施工的管理，確保安全、質(zhì)量、環(huán)保、進(jìn)度等各項(xiàng)目標(biāo)的實(shí)現(xiàn)，項(xiàng)目部配備了相應(yīng)的施工管理人員，使各施工人員能夠明確自己的任務(wù)、責(zé)任，在施工中各盡其責(zé)，工程各項(xiàng)目標(biāo)的實(shí)現(xiàn)。管理人員配備見下表3.2-1。表3.2-1 現(xiàn)場施

52、工管理人員配備表 序號名稱人數(shù)備注1施工負(fù)責(zé)人12技術(shù)負(fù)責(zé)人13技術(shù)員24測量員35試驗(yàn)員16質(zhì)檢員17材料員18資料員19安全員110電 工2合計(jì)142.1.2 勞動力計(jì)劃表3.2-2 勞動力配置計(jì)劃表序號工班名稱人數(shù)任務(wù)分工備注1鉆孔樁工班8圍護(hù)樁、托換樁施工2鋼筋工班12鋼筋加工、安裝、植筋3木工班6支架、模板安裝拆除4混凝土工班5混凝土澆筑、養(yǎng)護(hù)5基坑開挖支護(hù)工班10基坑開挖及支護(hù)6托換工班10受力體系轉(zhuǎn)換7監(jiān)控量測組4施工監(jiān)測8雜工班8圍擋等臨設(shè)施工、文明施工、配合主體施工合計(jì)632.2 機(jī)械設(shè)備配置表3.2-3 機(jī)械設(shè)備配置計(jì)劃表序號機(jī)械/設(shè)備/儀器名稱規(guī)格型號單位數(shù)量備注1鋼筋、砼施工設(shè)備1.1鋼筋彎曲機(jī)GWB