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承台深基坑施工专项方案

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湖北省郧县（鄂豫省界）至十堰高速公路第10合同段 （K55+000～K62+230）

九里岗分离式立交承台施工方案 （K59+352.5～K59+881.5）

中国中铁

编制： 复核： 审核：

中铁港航局（集团）三公司 郧十高速公路土建10标项目经理部 2013年3月 目 录 1、工程概况 ························································································································································ 1 1.1、工程概要 ····················································································································· 错误！未定义书签。 1.2、主要经济指标 ············································································································· 错误！未定义书签。 1.3、鸭子河大桥承台概况 ·································································································· 错误！未定义书签。

2、编制依据 ························································································································ 错误！未定义书签。 3、施工准备 ························································································································ 错误！未定义书签。 3.1、技术准备 ····················································································································· 错误！未定义书签。 3.2、场地清理 ····················································································································· 错误！未定义书签。 3.3、材料供应 ····················································································································· 错误！未定义书签。 3.4、施工前质量验收 ········································································································· 错误！未定义书签。

4、承台施工 ························································································································ 错误！未定义书签。 4.1、承台施工工艺流程图 ·································································································· 错误！未定义书签。 4.2、测量放样 ····················································································································· 错误！未定义书签。 4.3、基坑开挖 ····················································································································· 错误！未定义书签。 4.4、凿除桩头、桩基检测 ·································································································· 错误！未定义书签。 4.5、钢筋绑扎 ····················································································································· 错误！未定义书签。 4.6、模板安装及维护 ········································································································· 错误！未定义书签。 4.7、灌注混凝土及质量保证措施 ······················································································ 错误！未定义书签。 4.8、拆模 ····························································································································· 错误！未定义书签。 4.9、养生 ····························································································································· 错误！未定义书签。 4.10、基坑回填 ··················································································································· 错误！未定义书签。

5、资源配置及施工进度计划 ····························································································· 错误！未定义书签。 5.1 主要机械设备安排 ········································································································ 错误！未定义书签。 5.2 劳动力配置度计划 ········································································································ 错误！未定义书签。 5.3 施工进度计划安排 ········································································································ 错误！未定义书签。

6、高温及雨季施工质量保证措施······················································································ 错误！未定义书签。 6.1、雨季施工质量保证措施 ······························································································ 错误！未定义书签。 6.2、高温施工质量保证措施 ······························································································ 错误！未定义书签。

7、安全保证措施 ················································································································ 错误！未定义书签。 8、环境保护方案 ················································································································ 错误！未定义书签。 8.1、生态环境保护 ············································································································· 错误！未定义书签。 8.2、环境污染的防治 ········································································································· 错误！未定义书签。 8.3、施工环境监控 ············································································································· 错误！未定义书签。

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深基坑专项施工方案(大于5米承台基坑)(1)

深基坑专项施工方案(大于5米承台基坑)(1)

目录1.编制目的 (2)2、编制依据 (2)3、施工方法及工艺要求： (2)3.1、深基坑开挖、支护方案的选择 (3)3.1.1、 5M以下无水土质基坑 (3)3.1.2、 5M以下有水土质基坑 (3)3.2、深基坑开挖施工工艺 (6)3.2.1、施工准备 (7)3.2.2、基坑开挖 (8)3.2.3、基坑排、降水、基坑支挡施工 (9)4、保证基坑安全的技术措施 (14)5、应急预案 (15)5.1应急预案的任务和目标 (15)5.2安全风险应急准备 (15)5.2.1、应急机构 (15)5.2.2、突发事故应急处理设备和物资 (18)5.2.3、突发事故应急处理的协调 (19)5.2.4、险情报告制度及应急预案启动程序 (19)6、文明施工及环保 (20)6.1文明施工保证措施 (20)6.2环境保护保证措施 (21)深基坑专项施工方案（大于5米承台基坑）1.编制目的明确桥梁深基坑施工作业的工艺流程、操作要点和相应的工艺标准，指导、规范深基坑作业施工。

2、编制依据1、《客货共线铁路路基工程施工技术指南》（TZ212-2005）；2、《铁路路基工程施工质量验收标准》（TB10414-2003、J285-2004）；3、沪昆铁路客运专线湖南有限责任公司下发的指导性施工组织设计；4、沪昆铁路客运专线湖南有限责任关于项目建设管理的规章臸度；5、招标文件、施工承发包合同文件、补遗书等；6、I级铁路专用材料、机械设备、机具等相关规程、标准、质量文件；7、本项目采用的施工图、设计文件、技术交底、纪要等；8、《铁路工程土工试验规程》（TB10102-2004）；9、《铁路工程地基处理技术规程》（TB10106-2010 J1078-2010）；3、施工方法及工艺要求：（一）深基坑的定义深基坑是指开挖深度超过5米（含5米），或深度虽未超过5米，但地质条件和周围环境及地下管线特别复杂的工程。

（二）深基坑施工总体方案深基坑施工按照施工工序分为：根据现场实际情况臸定深基坑开挖、支护方案—深基坑开挖施工准备—基坑开挖—基坑支护与排水—基坑安全防护—基坑整理—基坑检验。

水中深基坑承台及系梁施工方案

水中深基坑承台及系梁施工方案

水中深基坑承台及系梁施工方案一、水中深基坑承台施工方案1.承台材料选择：考虑到水中深基坑施工的特殊性，承台的材料需要具备防水性能和耐腐蚀性能。

常用的材料有聚合物混凝土、特种混凝土、玻璃钢等。

选择材料时需要根据具体情况和设计要求进行合理选择。

2.承台施工方法：水中深基坑承台施工可采用沉箱法、沉管法、抛石法等不同的施工方法。

其中，沉箱法是较常用的方法，适用于水位较低的情况下。

施工时先将沉箱下沉至预定深度，然后将沉箱填充，最后置入钢筋和混凝土。

3.承台防水措施：水中深基坑承台施工必须采取严密的防水措施，以防止水渗漏导致承台失稳。

可以采用挡水板、水下浇筑混凝土等方式加强承台的防水性能。

1.系梁布置：系梁的布置应根据基坑的设计和荷载要求确定，一般采用钢筋混凝土梁或预应力混凝土梁。

系梁的间距和深度要符合设计要求，以确保整个基坑结构的稳定性和承载能力。

2.系梁施工工艺：水中深基坑系梁的施工可以采用预制梁和现浇梁的方式。

预制梁适用于较小的基坑和较浅的水位情况下，可以在陆地上进行制作，然后打入基坑。

现浇梁适用于较大的基坑和深水情况下，需采用水下浇筑的方式完成。

3.系梁连接：水中深基坑系梁在连接处需要采用密封材料进行封堵，以防止水渗漏。

可以使用特殊的密封胶条或胶泥进行连接部位的密封处理，确保施工结构的密封性和稳定性。

总结：在水中深基坑承台及系梁施工过程中，施工方案的制定需要充分考虑基坑的特殊情况和水的存在，采取相应的措施来保证施工质量和施工人员的安全。

承台的材料选择、施工方法的确定、防水措施的加强，以及系梁布置和施工工艺等方面的合理设计和施工，都是保证水中深基坑施工质量的重要环节。

通过科学的施工方案和合理的技术措施，可以有效解决水中施工过程中的难题，确保工程安全高效完成。

承台深基坑钻孔桩防护施工方案

承台深基坑钻孔桩防护施工方案

新建张家口至唐山铁路ZTSG-7标段深基坑专项施工方案编制：复核：审核:中国铁建十四局集团张唐铁路项目经理部二〇一二年十一月九日目录一、编制依据 (1)二、适用范围 (1)三、工程概况 (1)1、工程简介 (1)2、气象特征 (1)3、水文地质及工程地质 (2)四、施工方案 (2)1、施工准备 (2)2、施工测量 (2)3、开挖防护施工工艺流程 (3)4、主要施工工序及方法 (3)五、质量保证措施 (7)1、防护桩质量保证措施 (7)2、基坑开挖质量保证措施 (7)3、基坑回填质量保证措施 (7)七、施工安全保证措施 (8)八、文明施工保证措施 (10)1、文明施工保证措施 (10)2、文明施工管理目标及措施 (10)九、环境保护施工措施 (11)1、施工环境保护 (11)2、施工期内的主要环境污染因素特征 (11)3、主要环境影响的控制 (12)深基坑开挖与支护专项方案一、编制依据1、铁三院有关桥涵深基坑开挖的设计文件2、《客货共线铁路桥涵工程施工技术指南》(TZ203—2008)3、《铁路混凝土工程施工技术指南》(铁建设[2010]241号)4、《铁路混凝土工程施工质量验收标准》（TB10424—2010）5、中铁十四局集团中铁十四局集团有限公司通过质量体系认证中心认定ISO9001：2000《质量手册》和《程序文件》二、适用范围本方案适用于新建张家口至唐山铁路工程ZTSG-7标段,前冯各庄跨机场路特大桥18＃、19＃主墩深基坑工程施工作业.三、工程概况1、工程简介前冯各庄跨机场路特大桥起于丰润区老庄子镇前冯各庄村，沿途经杨信庄终于大树韩庄子村界内，总长1787.2m，桥梁孔跨布置1—96m（系杆拱梁)、51-32m(双线简支T梁）.前冯各庄跨机场路特大桥主跨中心里程为DK437+245.66，以96m系杆拱跨越机场路.18#墩北侧为机场输油管道南侧为机场路，承台距两者最近距离分别为6.7m和2.24m。

桥梁承台深基坑开挖安全专项方案范本

桥梁承台深基坑开挖安全专项方案范本

桥梁承台深基坑开挖安全专项方案（正式版）编制：___________________审核：___________________日期：___________________桥梁承台深基坑开挖安全专项方案一、编制范围适用于泗永路改建工程范围内所有的桥梁施工过程中基坑开挖。

二、基本情况简介石梁河桥系梁工程, 根据施工图提供的数据, 开挖基坑深度以目前施工作业面计算, 大致在3米左右, 由于开挖基坑一侧紧邻施工便道, 另一侧为石梁河河道, 根据施工现场的实际土质情况, 拟采用大面积开挖, 河道一侧打围堰紧邻便道一侧分层开挖, 同时边坡采用雨布覆盖形式。

三、危险有害因素分析1）紧邻施工便道一侧边坡不稳, 造成基坑塌方；2）基坑开挖后, 不设围护, 存在高处坠落隐患。

3）基坑余土不按规定堆放, 造成基坑坍塌。

四、预防对策措施1、施工方案：a、施工工艺：测量定位机械进场土方开挖基底平整。

b、施工流向：清理土并外运, 先开挖0台, 自南向北, 自上而下, 依据施工开挖线分层依次进行开挖。

2、基坑开挖前的准备及开挖过程中的措施1)按照图纸设计要求,计算出基坑开挖深度,结合基坑开挖坡度,组织测量人员放出基坑开挖范围。

2)基坑开挖严格按方案规定程序进行,开挖过程中,现场技术人员密切观察开挖面土层地质变化以及地下水的渗出量, 根据情况,采取调整开挖坡度以及加强排水等措施,防止基坑在开挖过程中发生坍塌。

4）施工现场安设照明灯, 以便于夜间作业。

5）施工排水：认真做好基坑降水以及明排水工作, 确保基坑干燥, 加快施工进度, 开挖前准备好排水设施, 基坑周围的地面排水沟必须保持畅通, 并防止坑内排出的水和地面雨水倒流、回渗坑内。

3、围堰施工本桥基坑开挖中采用土围堰的方法一般规定1) 围堰高度应高出施工期间可能出现的最高水位0.5-0.7m。

2) 围堰要求防水严密, 减少渗漏。

3）堰顶宽度可为1-2m4）堰内边坡宜为1：1-1：1.5,5）内坡脚与基坑的距离不小于1m。