b新河街站明挖基坑及支护专项施工方案.doc

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1、First compliance review of the application of the appraisal Committee, only through the compliance review of the application to take part in a detailed review. 8.1 application compliance review: does not meet one of the following conditions, procuratorial Agency to submit application through complia

2、nce reviews, be invalidated: (1) application of the formats, contents, meet the requirements of selected files, powers of Attorney, declarations by the legal representative and the tender agent application to meet the requirements; (2) licence and a bidding agent qualifications meet the requirements

3、; (3) the similar project tendering agency agent number and provide proof of material compliance; (4) the tendering Agency intends to put into this project the number of professionals to meet the requirements; (5) are intended to the agent of the project as a project manager has similar projects the

4、 number of and references to meet the requirements; (6) no fraud case. 8.2 application review in detail the Evaluation Committee through compliance reviews will be selected for detailed review of the application. 8.2.1 tender agent institutions similar project tender performance requirements (16 poi

5、nts) tender agent institutions similar project tender performance 16 points, by two part composition (1) agent similar project of cumulative bid amount scored calculation rules for: Agent water project bid amount (on January 1, 2007 has has bid notice for associate) cumulative each reached 100 milli

6、on Yuan have 2 points, water project cumulative bid amount scored up not over 6 points. In addition, completes a bid worth more than 500 million yuan in total 1 minute, but other items score accumulated winning amount up to a maximum of 6 points. (2) calculation rule for the number of agents similar

7、 projects: proxy bid amount (since January 1, 2007 winning notice shall prevail) bidding projects in more than 50 million Yuan by 2 points, but the Agency projects the number of scores up to 3 minutes. 8.2.2 to be agents of the construction project as a project manager in the same project performanc

8、e (10 points) Project Manager agent performance scores including agents of the bidding agencies of similar projects, as well as in other similar project tendering agency service agent during performance. Total 10 Project Manager agent performance, made up of two parts (1) acting like the accumulated

9、 winning amount calculation rule: agents for water conservancy project bid amount (since January 1, 2007 winning notice for example) cumulative average reached 100 million Yuan 3 but scored no more than 5 minutes. (2) calculation rule for the number of agents similar projects: proxy bid amount (sinc

10、e January 1, 2007 winning notice for example) in the more than 50 million Yuan water conservancy project period of 3 minutes, but scores the number of agents similar projects up to a maximum of 5 points. Project Manager demonstrated to provincial-level and higher peoples Government or the developmen

11、t and Reform Commission published the winning bidder on the designated media publicity shall prevail. 8.2.3 staff requirement (25 points) 1, to the construction project serving personnel, 4 years experience in tendering agent, 2 points per person, 2 years experience in tendering agent .Pig is not a

12、pig. With domestic international market and technology big environment of changes, as China traditional industry of pig production of job way and profit way are requirements related industry for resources integration, to quality security for premise, regulation based farming, and management cost and

13、 the production, and sales cost, go standardization, and scale, and intensive, and market road, fast upgrade whole industry chain of regulation capacity, market competition capacity and anti-risk capacity. First, industry analysis (a) the basic situation in China is a traditional hog production and

14、consumption country, 2008 46.15 million tons of pork, pig stock 462.64 million head by the end pig slaughter 609.6 million. National pig industrys annual production value at around 650 billion yuan, nearly 50% per cent of annual output value of animal husbandry. Sichuan province in 2008 produced 6.5

15、2 million tons of pork, with 694,000 tons of Chengdu city, live pig sell 10.46 million, first 15 Vice-provincial cities in the country. The whole nation advantage regional planning (2008-2015) there are 437 counties (cities), 55, Sichuan, Chengdu has 7 (including in pengzhou). International pig indu

16、stry mainly include the European Union, the United States, and Canada, and Brazil and other absolute scale of animal husbandry industry and technology developed countries. Market 1, the domestic market from Chinas meat consumption habits and economic analysis of the development situation, the emerge

17、nce of new trends in the market of domestic pork and its products. Docking is a pig production and sales more closely. The Yangtze River Delta, Pearl River Delta and the Bohai rim economic developed area industrial structure adjustment gathered pace, two or three industries to the Central and Wester

18、n bias. Second, the rigid domestic consumption growth. For a long period, pork is still the largest variety of meat consumption in China, the absolute consumption continues to grow. Especially in the vast rural market growth potential. Third, market for pork and higher product quality requirements.

19、Pollution-free pork safety and health has shown a very good market prospects. Four is the market changing. Currently, cold meat, more and more varieties of meat and pork meat products, which accounted for a large proportion of pork consumption, stores, chain stores, supermarkets and other marketing

20、methods is on the rise, and transport has been extended to more than 2000 km in RADIUS. Chengdu is an important River pig resource market, the citys commercial rate reaches above 60% of live pigs, pork and raw materials primary processing products in the domestic and international reputation is high

21、. Western hog trading center in Chengdu and provides disease-free areas of construction in order to further accelerate the development of swine industry realizes space and conditions. 2, the international markets at present, annual volume of trade in live pigs in the world year around 18 million, ab

22、out 6 million tons of pork trade. A large net exporter of pork is mainly the EU and North America,-importing countries mainly in Asia, Japan, and Korea, and Singapore, the Philippines, Hong Kong and other countries and regions, as well as Russia, about 3 million tonnes were imported. It is predicted

23、 that the world meat consumption increase of 80% in Asia in the future, our country has obvious geographical advantages, export potential. With the advancement of live pigs superiority industry belt construction, animal disease .武汉市轨道交通七号线土建工程第十一标段新河街站基坑开挖与支护专项施工方案 编 制: 审 核: 审 批: 中铁十五局集团有限公司武汉轨道交通七号

24、线第十一标项目经理部2014年9月19日4.1 application of the Chinese language application for proxy bidding agency application system. 4.2 bidding agent applications should be submitted by the Agency included in the 5th chapter of the content, and than select file asked to provide appropriate documentation. 4.3 proxy

25、 application shall affix its official seal coding and page by page in the specified location. Agent a copy of the application shall have to number the pages and signed original copy (copy) (including supporting documents), and copy should be exactly the same. 4.4 application there shall be no loose

26、pages. 4.5 agent application should be complete with indelible ink (powdered) prints, the agent shall not alter any page of the application. 4.6 bidding agencies offer should be based on the interim measures for the management of tendering agents service charges (meter prices 20021980) rules of the

27、Nineth, tender agent service charges using the difference progressive billing rate. Charges in accordance with the tendering agents service charges and, in conjunction with the provisions of the specific circumstances of the project shall not be floating up and down-floating range must not exceed 20

28、%, otherwise the application cannot pass compliance checks, be invalidated. Due to bidding agency selection and principal-agent contracts signed during charging base bid amount has not yet been produced, it can only be according to the rates of price, bid and the bid amount determines after the end,

29、 controlled response rates calculated shall pay tender fee (tender agency fee accounts for the actual bidding agent item for fares). Than the selected person tendering agents service charge control the upper and lower limits, Cap for the State Development Planning Commission of the interim measures

30、for the management of tendering agents service charges (meter prices 20021980) of tendering agents service fees under 100%, the lower limit for the State Development Planning Commission of the interim measures for the management of tendering agents service charges (meter prices 20021980) of tenderin

31、g agents service fees under 80%. Tendering agents service charge base should include the following tenders: construction, supervision and material over the above tenders are expected to be important, with each tendering agency entrusted with tender bid amount as a base for a separate computation of

32、tendering agents service fees. Tendering agents service fee payment in accordance with the General Office of the State development and Reform Commission on tendering agents service charge of notification on the relevant issues (the change price 2003857). Sale of prequalification documents and solici

33、tation documents going to choose all, pricing should be based on the principle of profit not files, must not violate the relevant provisions in the price Department. 4.7 requirements in the form of application proxy application shall be prepared in the 5th chapter of the format. Application of vario

34、us supporting documents should be requested by the selection of files grouped by order. Comparison and selection of the bidding agencies must provide supporting documents required by the file; the file you selected does not have the required supporting documents, bidding agency acknowledged the need

35、 to provide, or you can provide. Proxy application shall be bound, and page-by-page coded in the order. 5th chapter application format notes: bidding agent .75目 录1.工程概况11.2围护结构形式11.3车站交通疏解11.4主要的工程量31.5地质水文条件31.5.1工程地质情况31.5.2水文地质52.编制依据63.施工计划73.1 施工进度计划73.2劳动力计划73.3主要材料计划83.4主要施工机具配备计划84.施工工艺技术94.

36、1基坑技术参数94.1.1.基坑结构参数94.1.2.施工相关参数94.2.工艺流程104.3.主要施工方法104.3.1.降水方案104.3.2.基坑开挖104.3.3基坑验槽194.3.3地连墙检测验收214.3.4.基坑支护224.3.5.施工注意事项314.3.6.施工技术要求334.4.检查验收344.4.1.检查验收依据344.4.2.检查验收项目与标准344.5.基坑监测344.5.1监测点布置374.5.2基坑监测394.5.3地面建筑物监测404.5.4地下管线监测及保护措施434.6雨季施工措施444.6.1雨季施工准备444.6.2雨季施工技术措施455.施工安全保证措施

37、465.1.组织保障465.1.1.建立安全生产管理体系465.1.2.建立健全安全管理制度465.2. 施工安全技术措施465.2.1施工场地安全管理措施465.2.2施工机械安全管理措施475.2.3 施工用电安全管理措施475.2.4 钢支撑安装及拆除安全技术措施486.施工质量保证措施486.1质量保证体系486.2施工过程的质量控制496.3各工序质量保证措施497.文明施工517.1文明施工保证体系517.2工地文明施工管理制度517.3文明施工措施528.应急预案548.1. 工程风险分析548.1.1连续墙接缝防渗漏措施548.1.2开挖过程中防意外措施558.1.3纵坡防失稳

38、措施558.1.4基底隆起、突涌应急措施568.1.5地面建筑物、地下管线应急措施568.2.事件及风险分析和预防568.2.1.急预案机构608.2.2.应急物资保障618.2.3.事故事件处置628.2.4.现场医疗救护638.2.5.社会支援649.附图641. 工程概况新河街站位于沙湖与内沙湖之间的友谊大道下方,新河街与友谊大道交叉路口的南侧。本站位于沙湖与内沙湖之间,沿友谊大道布置,友谊大道道路红线宽60m。车站西侧为内沙湖公园,东侧为新生路泵站、武汉供电公司、阳光水岸住宅小区及地下车库、武汉市国土资源和规划局武昌分局,西南侧为在建的商业建筑,东南侧为加油站及金盛国际家居广场。新河街

39、站有效站台中心里程:右DK18+870.000;车站起点里程:右DK18+761.848;车站终点里程:右DK19+103.480 ;车站全长341.632m,标准段宽21.3米。新河街站为标准地下两层12m岛式站台车站,采用单柱双跨结构,车站有效站台宽度为12m。车站标准段底板埋深18.03米左右,顶板以上覆土约3.524.44米。车站两端均为盾构区间,本站小里程端为盾构接收,大里程端为盾构始发。新河街站共设4个出入口,车站两端设置3组风亭,附属结构均为单层。1.2围护结构形式新河街车站主体结构采用明挖法施工,主体基坑长度341.63米,标准段基坑宽度为21.3米,盾构外扩段宽度为26.1米

40、;基坑平面呈长方形,主体基坑开挖深度标准段为18.03米,盾构下沉段为19.84米,基坑面积约6881。新河街站主体围护结构为地下连续墙+内支撑体系。地连墙厚1000mm,中间设置格构柱,两端头段设置斜撑。基坑竖向设置5道支撑支护:第1道支撑为钢筋混凝土撑,水平间隔6m,两撑间设置钢筋混凝土联系梁;第2、3、4道支撑为800mm, t=16mm钢管撑,水平间隔2.0m4.0m不等。第5道支撑为倒换支撑,800mm, t=16mm钢管。车站主体围护结构平面布置见下图。连续墙具体形式见地下连续墙专项施工方案。图 新河街站主体围护结构平面图1.3车站交通疏解新河街站的交通疏解分三期进行:一期交通疏解

41、:友谊大道原双向6车机动车道2非机动车道,利用在友谊大道车站东西两侧施工的交通疏解道,道路改造将部分非机车道、绿化带、人行道改成机动车道,保持双向6车机动车道及2人行非机动道,主要进行车站围护结构、土方及主体结构施工。占用道路计划时间为18个月。二期交通疏解:恢复部分车道,保持双向6车机动车道及2人行非机动道,主要进行区间盾构施工、1号风亭、1号出入口、4号出入口施工。占用道路计划时间为6个月。三期交通疏解:恢复部分车道,保持双向6车机动车道及2人行非机动道,主要进行2号风亭、3号出入口施工,占用道路计划时间为4个月。1.4主要的工程量表1.4-1 基坑开挖与支护施工主要工程量表1.5地质水文

42、条件1.5.1工程地质情况拟建新河街站位于武昌区友谊大道与新河街交汇处附近,毗邻内沙湖公园,本车站呈南北向分布于友谊大道上,场地地面标高在20.6821.64m之间(以孔口标高计),地势较为平坦,地貌单元属长江冲积级阶地。根据勘察结果,各岩土层地层岩性按工程地质分区分述如下:(一)填土(Qml)层杂填土(地层代号(1-1)):杂色,湿饱和,高压缩性,由粘性土与砖块、碎石、块石、片石、炉渣等建筑垃圾及生活垃圾混合而成(局部地表有1550cm厚的沥青砼地坪)。该层土结构不均、土质松散,层厚0.805.00m,普遍分布于场地表层,堆积年限一般大于10年。素填土(地层代号(1-2)):灰褐灰色,以粉质

43、粘土为主,软可塑状态,湿饱和,高压缩性,局部夹植物根系及小碎石,埋深0.802.70m,层厚0.703.30m,场地沿线局部分布,堆积年限一般大于10年。淤泥(Ql)(地层代号(1-3)):灰褐灰黑色,饱和,流塑状态,高压缩性,富含有机质及生活垃圾,具流变性,具腐臭味,无摇振反应,干强度中等,韧性中等。局部地段零星分布,埋深2.403.50m,其厚度0.702.40m。(二)第四系全新统冲积(Q4al)层淤泥质黏土(Q4al)(地层代号(3-4)):灰褐灰色,饱和,流软塑状态,高压缩性,含少量高岭土,无摇振反应,干强度高,韧性高。沿线局部分布,埋深2.505.40m,其厚度10.3017.20

44、m。粉质黏土(Q4al)(地层代号(3-4a)):灰褐黄褐色,饱和,软可塑状态,压缩性中偏高,含氧化铁,铁锰质结核及少量高岭土,局部地段夹粉土、粉砂,无摇振反应,干强度高,韧性高。主要分布于场地(3-4)层淤泥质黏土下,埋深14.0020.00m,其厚度2.606.70m。粉土、粉砂夹粉质黏土(Q4al)(地层代号(3-5)):灰色,饱和,稍密、松散夹流塑状态,压缩性中偏高,矿物成分以石英、长石为主,局部夹粉质粘土,粉土、粉砂层厚比约4:6。场地大部分地段分布,埋深18.6025.00m,其厚度0.907.40m。粉砂夹粉土(Q4al)(地层代号(4-1)):灰色,饱和,稍密状态,矿物成分主要

45、为石英、长石,含白云母,局部夹稍密状粉土,沿线部分地段分布。埋深19.0027.80m,其厚度1.906.30m。粉细砂(Q4al)(地层代号(4-2)):灰色,饱和,中密状态,矿物成分主要为石英、长石,含白云母,主要分布友谊大道新河街螃蟹甲一带。埋深21.531.3m,其厚度3.7014.80m。含砾中细砂(Q4al)(地层代号(4-3)):灰色,饱和,中密偏密实状态,矿物成分主要为石英、长石,含白云母,局部含砾石,粒径一般在13.0mm间,局部达5.0mm,呈次棱角状亚圆状,含量约5%15%,沿线局部分布。埋深33.0036.20m,其厚度0.201.90m。(三)下伏基岩志留系(S)粉砂

46、质泥岩及泥质粉砂岩:强风化粉砂质泥岩(地层代号(20a-1):浅灰色青灰色褐灰色,岩芯大部分风化成土状,泥质胶结,手捏易散,局部夹未完全风化岩块,粉砂泥质结构,块状构造,倾角在45-70左右,采取率为90-95%,属于极软岩,岩体破碎,岩体基本质量等级为类,埋深33.5037.50m。中风化粉砂质泥岩(地层代号(20a-2):浅灰褐灰色,主要矿物成份为粘土矿物,泥质结构和粉砂质结构,泥质胶结,层状构造,裂隙发育,裂隙面光滑,岩芯呈碎块状和短柱状,锤击声哑,易碎,局部出现砂岩、泥岩互层现象,具软硬不均特征,倾角在45-70左右,采取率为85-90%,属于极软岩,岩体破碎较破碎,岩体基本质量等级为

47、类,揭露该层厚度36.3048.00m。强风化泥质粉砂岩(地层代号(20b-1)灰色褐灰色,岩芯呈土柱状,偶见未完全风化岩块,泥质粉砂状结构,块状构造,节理、裂隙较发育,倾角在45-70左右,采取率为65-75%,属于极软岩,岩体破碎,岩体基本质量等级为类,部分勘探孔揭露该层,埋深34.6035.00m。中风化泥质粉砂岩(地层代号(20b-2)灰色褐灰色,岩芯呈块状或柱状,泥质粉砂状结构,块状构造,节理、裂隙较发育,倾角在50-70左右,采取率为65-75%,属于软岩,岩体较破碎,岩体基本质量等级为类,部分勘探孔揭露该层,埋深35.5037.80m。1.5.2水文地质(1)地表水拟建新河街站范围内的地表水系主要为附近沙湖水系,主要接受大气降水补给,与长江水力联系受人为因素控制。据相关水文资料,沙湖历史最高水位为19.65m,正常水位为19.15m。(2) 地下水的类型拟建场区的地下水主要分为上层滞水、孔隙承压水二种类型。(1)上层滞水上层滞水主要赋存于(1)层人工填土层中,接受大气降水及周边居民生活用水渗透垂直下渗补给,无统一自由水面,水位及水量随大气降水及周边生活排水量的大小而波动,勘察期间测得场地上层滞水初见水位在地面下1.202.50m之间,静止水位在地面下1.002.00m。(2)孔隙承压

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