ccA、B竖墙及挡砟墙技术交底.doc
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1、King shop school car to watch the summary view store is located in the LAN-Xin railway, 215 students, and students to and from school has about 90 people to cross the railway, more than half of the students live in the school in the vicinity of the rail line along the railway more than 10 square kil
2、ometers. Railway is economy of artery, to makes railway along general people master railway legal regulations and security knowledge, enhanced love road watch consciousness, ensure railway security smooth, years, I school has been put love road watch work as education students of focus to caught, ma
3、de has significantly of effect, years no occurred had railway security accident, emerged out a and a love road watch small guard, General teachers and students and masses of love road watch consciousness General improve, times by superior recognition, Our practices are reporting on is as follows. An
4、d improve the Organization, love the way of protection responsibilities. Set up by the principal of the school is the head security administrator for the Deputy Head of the class teacher for members of the railway protection leading group for propaganda and education, consisting of offices, advocacy
5、 groups, education groups and steering groups, organizations responsible for railway protection publicity and education of the whole school, command and coordination. To ensure safety of the railway for the overall objectives, major tasks are: 1, arouse the enthusiasm of teachers, school advantages
6、into full play, watch the propaganda and education work of joint railway. 2, railway watch teacher and student awareness, to ensure against road-related casualties. 3, education in primary and middle school students the courage to fight against the Railway Safety Act and found to have damaged railwa
7、y safety relevant parts of the report in a timely manner to ensure railway safety. Do Division, responsibility and student teacher assessment, evaluation and love road linked to the protection and safety, enhance the sense of responsibility. Second, programming, watch love road work routine. School
8、developed has railway watch publicity education work programme, put love road watch work into school education teaching plans, full using class teaching, and theme class, timing, education students learning railway method, about love road security matters, school requirements daily of campus broadca
9、st to has five minutes of railway security knowledge education, all class weekly are to Shang a section love road watch aspects of security class, monthly introduced a period love road watch aspects of window publicity, reached has alarm ringing of effect. Third, explicitly demanded that the love ro
10、ad protection work. Schools to establish and improve a love road watch schedule, enacted the railway safety ten no Protocol, the Convention on the safety and other regulations and requirements, so as to enable departments to further their work. Which publicity group is responsible for railway watch
11、legal regulations and about common sense of publicity, annual organization a to two times above railway method, and security management Punishment Ordinance, for main content of publicity, further strengthened General teachers and students of concept and love road watch consciousness, education stud
12、ents do three not: that not to railway Shang play, without stones, hit train, is not rail Shang stacked roadblocks. Education groups to include railway protection knowledge education in carrying out quality education, class of railway transport in the main channel of textbooks in economic constructi
13、on in the role and significance of guiding students to take care of the railway技 术 交 底 记 录吉珲施技-20-1工程名称新建铁路吉林至珲春线分部(分项)工 程大石头特大桥桥面系施工交底项目A、B竖墙、挡砟墙基础网支柱基础 图纸名称、图 号常用跨度梁面附属设施桥通(2008)8388A1 工期及主要工作量;构造、尺寸、限界要求:/2主要设备、材料、构件的型号、规格和质量要求(包括下料单名称编号)3技术要求和质量标准:见附页4施工程序、主要施工方法和安全措施注意事项(包括“施工工艺”项目、“单项作业标准”项目、代
14、号) 见附页附图见附页交 底 人 接 底 人 注:此表用于施工单位内部,如质量、安全措施注意事项写不下时,可加附页1. 挡砟墙墙、竖墙、接触网支柱基础施工 1.1工艺流程施工准备测量放样凿毛、调整预埋钢筋绑扎钢筋安装模板混凝土浇筑拆模、养护钢筋加工制作混凝土试件模板打磨、刷脱模剂混凝土拌和、输送基础预埋钢板安装图1-1 挡砟墙、竖墙、接触网支柱基础施工工艺流程图1.2挡砟墙、竖墙、接触网支柱基础简介及测量放样 剩余主要工程量:挡砟墙及A、B墙剩余131孔挡砟墙:钢筋型号:HRB33516,HRB33512。剩余数量:HRB33516:283t,HRB33512钢筋:166t。A、B竖墙:钢筋型
15、号:HRB33512,HPB2358。剩余数量: HRB33512钢筋:62.3t,HPB2358:19.8t。剩余混凝土数量:C40混凝土:2450m3.(1)挡砟墙防护墙设计为C40钢筋混凝土,采用12mm、16mm的HRB335钢筋,分节设计,除端部节长度为2295mm外,中间节均为1990mm,两节之间纵向设置设10mm宽的断缝。防护墙底面宽25cm,顶面宽20cm,直线段高度为900mm,曲线段内侧高度为900mm,外侧为1080mm。(如图2-1所示)。 (2)竖墙A、B无声屏障梁段竖墙A顶面宽100mm,底面宽150mm(如图2-2所示);有声屏障梁段竖墙顶面宽200mm,底面宽
16、250mm,竖墙A高度均为412mm。竖墙B宽度为100mm,高度为324mm。(3)接触网支柱基础(含下锚拉线基础)本工程使用的基础共有QJ-A1、QJ-A2、QJ-B、QJLX-1、QJLX-2五种类型,设计均为C50钢筋混凝土,采用HRB335钢筋。接触网支柱基础设计为C50钢筋混凝土,顺桥向长1000mm,底面横桥向宽700mm,顶面横桥向宽650mm,基础底面距防护墙650mm(如图2-4所示)。按设计要求预埋M39锚栓,钢板2块,锚栓外露基础面190mm,螺纹长度190+5mm,每个锚栓配3个螺母,2个垫圈。下锚拉线基础设计为C50钢筋混凝土,顺桥向长400mm,底面横桥向宽500
17、mm,顶面横桥向宽450mm,基础底面距防护墙750mm(如图2-5所示)。预埋4根M24锚栓,钢板2块,锚栓外露基础面100mm,螺纹长度100mm,每个锚栓配2个螺母,1个垫圈。(1)挡砟墙、竖墙施工放样时,直线段沿纵桥向每6m一点,曲线段沿纵桥向每3m一点,全桥形成一条通线。然后采用紧线器将40m钢丝拉紧绷直,拉紧后用墨线弹出模板边线。满足以上要求方可进行下道工序施工,否则查找原因并立即整改。每隔5孔梁将其端头左侧的接地端子做为固定的临时水准点,便于现场施工控制立模标高和挡砟墙、竖墙顶面标高。(2)基础测量队根据设计图纸提供的各基础尺寸和桩号进行施工放样,放出基础靠近线路侧两个角点,用墨
18、斗弹出基础边线。1.3混凝土凿毛、调整预埋钢筋施工前对结构物底面进行凿毛处理,钢筋根部凿毛至钢筋外侧12cm,并将表面杂物和浮渣清理干净露出新鲜混凝土面。把预埋钢筋调整顺直,保证钢筋保护层厚度满足设计要求。同时检查挡砟墙墙、竖墙梁体预留的接地钢筋、接地端子等接口的位置、数量是否符合要求,不符合要求的应及时处理完毕后,再进行施工。经监理工程师验收合格后方可进行下道工序。1.4钢筋绑扎(安装基础预埋钢板)(1)挡砟墙、竖墙钢筋安装时采用挂线绑扎施工。在箱梁两端及断缝处测出梁面标高后,反算出钢筋顶面标高,并将梁端钢筋及断缝处钢筋按设计标高固定好后拉线进行绑扎其他钢筋。钢筋绑扎时要求钢筋平直、无损伤,
19、规格型号符合设计要求,钢筋骨架绑扎牢固,纵向钢筋在断缝处断开,钢筋的交叉点用铁丝全部绑扎牢固。综合接地钢筋焊接长度为单面焊不小于100mm,双面焊不小于55mm,焊缝厚度不小于4mm。每跨梁小里程端设置接地端子,接地端子采用焊接方式固定在接地钢筋上,距离梁面15cm,端子表面应加保护膜,焊接时应保证其与模板密贴。钢筋绑扎时要注意预留钢筋保护层,在钢筋与模板间设置同标号混凝土垫块,非焊接钢筋骨架的多层钢筋之间,应利用竖向钢筋进行定位,保证钢筋位置准确。(2)接触网支柱基础根据已确定的基础位置,检查预埋螺栓的绝对位置和相对间距是否正确。同时,利用顶面预埋钢板对螺栓的垂直度、螺栓间距、对角线距离、螺
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