z填方段拱形骨架护坡施工技术交底(修改)

1、Good is good, but better carries it.精益求精，善益求善。z填方段拱形骨架护坡施工技术交底(修改)填方段拱形骨架护坡施工技术交底填方段拱形骨架护坡施工技术交底一、 交底目地 使项目部技术员和施工人员清楚填方骨护坡的施工流程和工序要求，明白施工质量控制要求，现场技术员要加强技术指导和书面技术交底（测量数据），施工队要严格按设计和技术交底组织施工，杜绝因不清楚工序流程和质量要求出现窝工、返工情况，造成损失的要根据相关管理办法和现场情况进行处罚，并承担相应损失。 填方段路基骨架防护施工前认真核对设计图纸，现场确认防护形式、段落，不能确认或现场实际与设计不符时，现场技

2、术员要及时与工程部联系确认。二、 拱形骨架护坡 1、基本要求：石料规格符合要求（厚度大于15cm，严禁采用风化石料）；水泥、砂、水符合规范要求，施工配合比符合要求；表面平整，无垂直通缝；勾缝平顺无脱落。 2、场地和砂浆拌合要求 砂堆放场地必须硬化处理；水泥堆放处必须硬化处理，水泥存放要有防雨防潮措施，防止水泥硬化结块。 砂浆要求机械拌合，严禁人工拌合砂浆（勾缝除外）。砂浆要求按试验配合比拌合，每盘称重计量；要求现场必须有配合比标示牌、磅秤、小斗车等计量工具。 施工处砂浆必须堆放在铁皮上，严禁砂浆直接堆放在土地面上。砂浆必须在初凝前使用完，已经初凝的砂浆严禁使用，必须废弃处理。 3、浆砌基础施工

3、 拱形骨架护坡基础为M7.5浆砌片石；施工放样每10m，先根据设计线位放出路面边线桩，根据设计路面边缘位置（线位和标高符合设计）和设计边坡值，利用坡度尺挂出边坡坡线，边坡坡线与路基填方原地面的交汇处既是路基坡脚线，如因边坡清理不到位，可采用在坡面掏槽方法确定坡脚线；坡脚线确定后，根据设计护坡基础尺寸进行基坑放样，开挖和修整基坑。基坑基底要进行夯实处理，基坑尺寸不能小于设计基础尺寸，基坑报监理检验合格后才能砌筑片石。 浆砌片石砌筑时要求挂线砌筑，保证设计尺寸和位置；浆砌片石要求座浆分层砌筑施工，砌缝宽度2-4cm，严禁灌浆施工，每工班应按要求制取试件。沉降缝每14米（沉降缝中心间距）设置一道，缝

4、宽2cm，采用沥青麻絮填塞，沉降缝应贯通基础和坡面防护。 边坡坡面50cm高度应挂线施工，保证砌体大面平整。工作面接茬应进行清扫和洒水湿润后，才能继续砌筑。 浆砌片石基础砌筑后土工布覆盖洒水养生7天，质量控制要求为：断面尺寸不小于设计，坡面浆砌厚度不小于设计（30cm），浆砌片石表面平整度不大于3cm，坡面符合设计边坡值，砂浆强度符合设计值。4、浆砌骨架预制块及坡面浆砌片石 拱形骨架混凝土预制块已在预制场集中预制，现场技术员要根据段落长度和边坡高度计算数量，施工队要及时与预制场联系，电杜），预制块进场后要集中存放，不能随意乱堆乱放。 为保证骨架护坡尺寸和位置符合设计，

5、整体美观，在施工前需要按图示尺寸和规格制作模架。 施工放样严格按图示尺寸进行放样挂线，坡面挂线必须由路面边缘按设计标高，依据坡度尺向坡面下挂线。（尺寸单位：cm）放样挂线：放样挂线后，依据挂线位置安装钢筋模架，当底部H值小于335cm时，可将上一级拱形直边向下延伸与基础顶面相交即可。安装完模架后，人工清除模架外的边坡土方，清理厚度30CM，一处沉降缝宽度全部清理完成后，报验护坡基槽；合格后可由下至上沿模架边缘砌筑预制块，同时砌筑片石护坡。 预制块砌筑要选用完整无破损的，砌缝宽度2cm，预制块高度方向埋入坡面内深度保证30cm，在最下一级拱形骨架直边延长段，可根据实际长度裁切直线预制块。 在浆砌

6、预制块的同时，及时施工骨架浆砌片石，以稳固预制块。浆砌片石应由坡顶挂线，保证厚度不小于设计（30cm）和平整度（3cm），砌筑工艺采用座浆砌筑，严禁灌浆施工，砌缝宽度2-4cm，防止竖直通缝和瞎缝（砌缝宽度为0）。骨架护坡顶面标高为路床顶面，应严格控制（±2cm），已砌筑完成的段落应洒水养生7天以上。5、勾缝 勾缝前对浆砌砌体砌缝要进行凿除清理，保证勾缝嵌入砌体内不小于2cm，勾缝砂浆不应高于浆砌砌体表面，要求全部采用凹缝，勾缝完成洒水养生不小于7天。6踏步施工 按图纸要求，人行踏步布设间距为80-100m一道，根据实际情况在每7个沉降缝处设置一处踏步，踏步设置在沉降缝处，宽度60c

7、m。 踏步为浆砌片石，基础要求放出坡脚线后施工，踏步坡面也要由路面边缘顶挂出坡面先后掏槽砌筑，砌筑要求同骨架护坡，注意踏步尺寸和砌体厚底，踏步表面采用砂浆抹面处理。7、坡面填土 对拱形骨架内边坡土面进行修整，保证设计坡面。原设计图骨架内为植草，但目前仍未确定，暂不施工。8、与涵洞八字墙相交处 16Establishment of the patriotic Health Committee, the implementation of Division of responsibility, school of health management. , Room, group, grade sc

8、hool health work of grass-roots organizations, is responsible for the Department of health management. All classrooms, offices and other indoor sanitation, daily cleaning, keep the floor, table, wall clean table, cupboards, chairs and all the appliances in order and clean. No graffiti, doors and Win

9、dows and bright. Lectern, Blackboard in the classroom clean and tidy. School sanitation, according to the Division of school health area of responsibility, responsibility to do: a small sweep a day a week a big sweep, neat and clean, no paper, no spam, no weeds, no sewage, no bags, no Peel. Personal

10、 hygiene: education students to cultivate "five", "six nots" personal hygiene habits. Five: time schedule, to brush your teeth before going to bed, to change clothes, bathe, and frequently washing hands before meals and after nails Barber,. "Six" not to drink unboiled w

11、ater, do not eat unclean food, no smoking, no spitting, no snacking, no public towels, cups. Pay attention to eye health, read and write positions lying upright, not reading, not in the light of local walking and reading, doing eye exercises and timely correction of eye disease, regular rotation zuo

12、ci. Gym class, working class, to strengthen students ' safety education, comprehensive physical examination once a year on students, included in the profile. Improving food hygiene: to improve sanitation and hygiene, implementation of the food hygiene regulations, to ensure food hygiene, ensure

13、the physical and mental health of teachers and students. Eliminating four pests, preventing disease: promptly clean up the garbage, sewage, preventing mosquito breeding places, cleaned up the garbage, make sure and clean. Strengthen health publicity poster out in time to publicize health knowledge,

14、use of the health education health education to students. And eye exercises, mental health education during the consultation process, held in common, multiple lectures on epidemic prevention. Health inspection rating system: head teacher, classroom teacher, Member of the class of health checks, moni

15、tor the implementation of environmental health and eye exercises every day. Check rankings of school organizations to inform the inspection results. Check every Monday, one month, one to summarize, according to the inspection results issued health flow red flags. Six disease prevention to prevent my

16、opia? When sitting up, head tilted, eyes 33 cm from the book. Eat, walk, bus reading, not too strong, too weak to light reading. Write not too small too close, do not write typo, grass hand. Reading time and a half to 1 hour, you should rest for a few minutes. Controlling the number of TV and time,

17、a distance of 2.5 metres. Pay attention to nutrition, food supplements containing vitamin a. How to prevent tooth decay? To develop good hygiene habits, way of brushing our teeth, mouthwash, before going to bed without eating snacks. Improve the ability of anti-caries of the teeth, acid toothpaste with fluoride. Eat less sugar, eat a lot of food to prevent tooth decay, such as milk and