q底基层级配碎石试验路段施工总结报告_secret.doc

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1、【精品文档】如有侵权，请联系网站删除，仅供学习与交流q底基层级配碎石试验路段施工总结报告_secret.精品文档.乌兰察布市综合物流产业园区运煤专线公路工程三标段水泥稳定级配碎石底基层试验路段施工总结报告乌兰察布市综合物流产业园区运煤专线第二驻地监理工程师办公室：根据交通部标准JTJ034-2000公路路面基层施工技术规范，为优质高效地完成底基层施工任务，根据施工进度计划的要求，在建管办、驻地办的监督和指导下，我合同段于 年 月 日，在K108+700K108+900路段进行了水泥稳定级配碎石底基层试验路段铺筑。现将试验路段铺筑情况总结报告如下：一、试验路段的目的 （1）通过铺筑试验路段，确定

2、合理的集料级配。 （2）确定混合料的均匀性。（3）确定混合料含水量控制方法。（4）确定混合料摊铺方法和适用机械。（5）确定压实机械的组合及压实顺序、速度、遍数等。（6）确定混合料的松铺系数。（7）确定每天作业段的合理长度。（8）制定质量保证的具体措施。（9）制定合适的施工方案及技术交底。二、施工准备（1）碎石石料主要采用本地石料场，底基层用碎石的压碎值不大于30。水：在拌合站打机井取水，该地区为山区深处，水质干净、清澈、无污染。 （2）材料标准试验及配合比设计试验结果取工地集料厂实际使用并具有代表性的各种材料筛分，用图解法求得目标配合比，并用重型击实法求得最佳含水量为6.0%，最大干密度为2.

3、39g/cm3。 （3）铺筑前对下承层重新整修、碾压按规范要求进行检验在铺筑前已经对下承层进行了高程、中线偏位、宽度、横坡度和平整度检查，对下承层进行了复压。 （4）施工测量放样在已验收合格拟摊铺的试验路段两侧进行中线、边桩恢复，直线段每10米设一个中桩，平曲线每5米设一个中桩，并进行高程测量。在两侧边线外0.5m处每10m钉立钢钎桩，在钢钎桩上架设2.5mm的钢丝（钢丝平行于设计高程）作为底基层摊铺的高程、横坡、厚度控制基准线。基准线的张紧力大于800N，基准线立柱与基准线之间连接牢固，以免发生上下或左右松动现象，在纵向两条基准线的中间架设铝合金导梁，作为两台联合作业摊铺机的高程基准面。 （

4、5）施工机械及人员配置机械设备及测量仪器表投入的试验、技术、质检人员表序号姓名本标段所担任职务备注1陈 智项目副经理2刘鹏飞工程科长3胡志勋试验室主任4徐 娟试验员5郝永峰试验员6韩旭栋测量工程师7何 涛质检工程师8李军伟技术员9张 蒙技术员 （6）生产配合比的标定过程及试验结果水泥稳定级配碎石底基层试验路段位于K108+700K108+900，设计厚度为20cm，下承层是砂砾垫层。首先取用现场连续级配的材料通过筛分、击实、试铺、得出级配碎石垫层的最大干密度为2.39g/cm3，最佳含水量为6.0%。三、施工工艺流程 （1）工艺流程图 水泥稳定级配碎石底基层施工工艺框图准备下承层 原材料试验

5、施工放样 原材料进场检验及堆放运输摊铺整平碾压质量自检、报检提交试验段施工总结 （2）施工工艺 1、原材料进场必须经过试验检测，各项指标均符合设计和规范要求时，才能运输到施工现场堆放；原材料试验及配合比试验工作，必须严格按规范和设计要求进行；用于试验的各种仪器、拌合设备必须校核并具有相应的合格证书，以保证试验结果真实、准确、可靠，并按合同要求报批。2、施工及管理人员：项目部生产副经理负责摊铺现场指挥、协调，工程科长负责拟定施工技术方案、现场质量管理，试验室主任负责试验检测工作。摊铺现场设试验人员2人，负责检测压实度、含水量等；设技术人员4人，负责施工放样，厚度、宽度、平整度检测、松铺系数测定及

6、施工现场压实顺序、压实遍数的记录工作，发现问题及时反馈信息、及时纠正。摊铺现场设工人10人，负责摊铺混合料及整形、补充洒水等。3、准备下承层：级配碎石底基层施工前用YZ-20重型压路机对下承层进行碾压，经检测弯沉值符合设计要求。认真检查下承层的各项技术指标，并报监理工程师批准。清除下承层内的各类杂物及散落材料，在摊铺前要保证下承层表面湿润。4、施工放样：在拟铺筑路段两侧每10米设控制桩挂线，使用全站仪和水准仪准确放样，控制其平面位置、高程、横坡、平整度等。5、在开始拌和前，应检查场内各档集料的含水量，计算当天的施工配合比，外加水与集料含水量的总和宜比最佳含水量高1%左右。随时检查配比、含水量是

7、否变化。在拌合后应定时分次对拌合料按规定取样，检查混合料级配和水泥剂量。拌和楼应配备带活门漏斗的料仓，成品混合料先装入料仓内，由漏斗出料装车运输，装车时车辆应前后移动，分三次装料，避免混合料离析。不得采取自由跌落式的落地成堆、装载机装料运输的方式。在材料堆料场设专职试验员，对混合料进行含水量、集料级配的检验，检验合格后方可运输到现场。6、混合料运输：运输采用20t自卸汽车运输，运输车辆应覆盖防止混合料水份蒸发、雨淋及污染环境。卸料时设专人指挥运输车卸料，并做好相应的记录。7、混合料摊铺： 水泥稳定级配碎石底基层采用两台摊铺机梯队进行摊铺的施工方法： （1）放线：设2人负责施工放线、检查工作。根

8、据设计标高和拟定的松铺厚度，在拟铺筑路段两侧每隔10米插杆挂线，控制松铺高度。 （2）卸料：按运料车单车数量、摊铺宽度、松铺厚度准确计算卸料间距，设专人指挥汽车卸料，严格控制卸料间距。 （3）摊铺：每天摊铺前应检查摊铺机各部分运转情况。严格按层厚和高程，调整控制好传感器臂与控制线。最大压实厚度不宜大于20cm，当压实厚度大于20cm 时应分二层摊铺。摊铺机应连续摊铺，摊铺速度宜控制在23mmin。两台摊铺机梯队作业，并保证其速度、摊铺厚度、路拱坡度、振动频率等一致，两机摊铺接缝平整。摊铺机的螺旋布料器至少应有三分之二埋入混合料中。摊铺机在安装、操作时应采取如降低布料器前挡板的离地高度等混合料防

9、离析措施，摊铺机后应设专人消除离析现象，铲除局部粗集料“窝”，并用新拌混合料填补。8、混合料碾压（1）摊铺成型后，当混合料的含水量等于或略大于最佳含水量时及时进行碾压，如果含水量过低侧需以洒水车进行补水。摊铺50m左右时即可作为一个碾压段进行碾压作业。碾压程序为：先轻后重，由边向中，由低至高，碾压时，轮迹重叠1/2轮宽。严禁压路机在已完成或正在碾压的路段上调头或急刹车。（2）碾压遍数确定 水泥稳定级配碎石底基层试验段的碾压机械为自重为20吨振动压路机。型号为洛阳ZY-20，自重22吨。碾压方法为第一遍以压路机静压，碾压速度1.52.0km/h；第二遍以后为ZY-20钢轮压路机低频小振幅振压，碾

10、压速度2.02.5km/h；第三遍、第四遍、第五遍为高频大振幅碾压，第六遍为静压。根据压实度检测资料，第三遍碾压完毕后压实度为94.7%；第四遍碾压完毕后压实度为95.5%；第五遍碾压完毕后压实度为96.5%；第六遍稳压完毕后压实度为97.7%；通过压实度检测，最终确定级配碎石底基层的碾压遍数为五遍,详细资料见附件。（3）松铺系数的确定根据底基层试验路施工过程中及成型后纵断高程观测资料分析确定：观测点桩号：K108+700K108+900，每个横断面设2个观测点，在横断面两侧钉桩采用钢尺控制测点位置，分别观测下承层、松铺后、碾压5遍、碾压6遍后的高程： 试铺松铺系数1.25，终压后观测高程与设

11、计高程比较在-8+5之间，符合规范要求。故确定采用松铺系数1.25。碾压遍数：根据对碾压第三、四、五、六遍的跟踪检测，在碾压第三遍后其压实度能达到94.7%，在碾压第四遍后其压实度能达到95.5%，在碾压第五遍后其压实度能达到96.5%，在碾压第六遍后其压实度能达到97.8%。根据以上碾压情况，在碾压5遍后压实度即满足要求，但为了保证碾压质量在以后施工中压实遍数按6遍控制。（4）含水量的控制经对运至施工现场的混合料含水量检测，其含水量为2.4%，低于最佳含水量，因此在施工现场采用洒水车进行补水，在平地机平整过程中同时进行，因考虑到施工现场水分损失，故施工含水量按大于最佳含水量控制，按6.2%控

12、制，按3.8%进行补水，计算每平方米用水量，然后根据每平方用水量计算出本试验路段总的用水量，并对洒水车拉水总重量进行控制，并均匀洒布。四、安生全生产措施和防范措施 1、安全措施所有参与施工人员必须严格按安全操作规程施工，特种作业人员（机械、电力作业人员等）必须持证上岗，按规定佩戴安全用品；施工中所有机械设备禁止机手擅离工作台，严禁用手触摸或用工具处理正在运转的机械；施工现场设立明显的安全标志；遇到夜间施工应加强施工照明设施，加强现场指挥，尽量缩短施工作业时间，运输车辆及其他行驶的设备必须小心驾驶，确保安全。 2、环保措施：严格遵守国家环境保护的有关规定，把施工对环境的影响降低到允许范围内；生产

13、、生活垃圾不得乱堆乱放，应运至环保部门指定地点堆放，避免污染环境；粉料工程运输车辆必须进行覆盖，施工便道要经常洒水养护，减少粉尘污染；采石场、拌合场、施工便道等在工程施工完毕后，及时按设计要求恢复植被。 3、文明施工按照文明工地建设要求，应建立良好的工作、生活环境，树立施工企业的良好形象；场内各项建筑材料、设备要分类、分规格、分品种堆码，标识齐全；现场施工要有计划有步骤进行，做到有序展开，工完料尽，及时平整恢复场地；现场布置各类施工牌、警示牌，大力宣传安全、文明施工。所有施工管理人员、机械操作人员必须挂牌上岗。五、试验路质量检查结果1、级配碎石基层试验路段的各项技术指标经检查均符合设计和规范要

14、求，验证了生产配合比的可行性。资料详见附件：质量检查表及试验检测资料；2、级配碎石混合料的含水量、集料级配控制得较好；3、技术管理人员和机械设备均能满足要求，在整个施工过程中没有发生较大失误；检 查 结 果五、施工过程中存在的问题及整改措施 1、卸料必须设专人负责指挥，严格按计算的卸料间距卸料，避免多卸或少卸； 2、进一步加强施工现场管理，做到分工明确、各负其责。施工人员应分组作业，明确各组的工作内容，做到各道工序有序进行； 3、加强施工放样工作及施工过程中测量控制，严格控制铺筑厚度、平整度等； 4、静压一遍后，暴露了底基层潜在的不平整、集料离析现象。对于局部低洼处，应用齿耙将其表层5cm以下

15、耙松，用新拌的混合料进行找平；对集料离析处，应挖除离析集料，用新拌的混合料铺筑；对粗集料露骨处及时用细集料撒铺，细集料另从石场购入； 5、碾压过程中，混合料表面始终保持湿润，如果表面水份蒸发过快，必须及时人工补洒少量水，保持表面潮湿。 6、碾压过程中试验人员在现场检测混合料含水量及配合比、压实厚度等，如有弹簧、松散等现象，应及时翻开重新拌合、碾压。六、养护及维护 碾压完毕后应尽快组织水泥稳定层的铺筑，如不能组织施工，应封闭交通禁止车辆通行。七、结束语水泥稳定级配碎石底基层试验段已施工完毕，经检测各项指标及检测方法均符合设计和规范要求，说明试验路铺筑是成功的，不足之处将会在正式铺筑前得到的有效整

16、改。综合以上施工情况，我们将以生产配合比1：2：3：4=22：22：26：30、最大干容重2.39g/cm3、最佳含水量6.0%、松铺系数1.25、碾压遍数6遍为最佳，对所有施工人员进行技术交底工作，保证水泥稳定级配碎石底基层施工顺利进行。 特此报告！乌兰察布市综合物流产业园区运煤专线 公路工程三标段项目经理部 年 月 日English is the most widely spoken language in the history of our planet, used in some way by at least one out of every seven human beings

17、around the globe. Half of the worlds books are written in English, and the majority of international telephone calls are made in English. English is the language of over sixty percent of the worlds radio programs. More than seventy percent of international mail is written and addressed in English, a

18、nd eighty percent of all computer text is stored in English. English has acquired the largest vocabulary of all the worlds languages, perhaps as many as two million words, and has generated one of the noblest bodies of literature in the annals of the human it is now time to face the fact that Englis

19、h is a crazy language - the most lunatic and loopy and of all languages. In the crazy English language, the blackbird hen is brown, blackboards can be green or blue, and blackberries are green and then red before they are ripe. Even if blackberries were really black and blueberries really blue, what

20、 are strawberries, cranberries, huckleberries, raspberries, and gooseberries supposed to look add to this insanity there is no butter in buttermilk, no egg in eggplant, no grape in grapefruit, no bread in shortbread, neither worms nor wood in wormwood, neither mush nor room in mushroom, neither pine

21、 nor apple in pineapple, neither peas nor nuts in peanuts, and no ham in a hamburger. (In fact, if somebody invented a sandwich consisting of a ham patty in a bun, we would have a hard time finding a name for it.)To make matters worse, English muffins werent invented in England, fries in France, or

22、Danish pastries in Denmark. And we discover even more culinary madness in the that sweetmeat is made from fruit, while sweetbread, which isnt sweet, is made from this unreliable English tongue, greyhounds arent always grey (or gray); panda bears and koala bears arent bears (theyre marsupials); a woo

23、dchuck is a groundhog, which is not a hog; a horned toad is a lizard; glowworms are fireflies, but fireflies are not flies (theyre beetles); ladybugs and lightning bugs are also beetles (and to, a significant proportion of ladybugs must be male); a guinea pig is neither a pig nor from Guinea (its a

24、South American rodent); and a titmouse is neither is like the air we breathe. Its invisible, inescapable, indispensable, and we take it for granted. But, when we take the time to step back and listen to the sounds that escape from the holes in peoples faces and to ex- the paradoxes and vagaries of E

25、nglish, we find that hot dogs can be cold, darkrooms can be lit, homework can be done in school, nightmares can take place in broad daylight while morning sickness and daydreaming can take place at night, tomboys are girls and midwives can be men, hours - especially happy hours and rush hours - ofte

26、n last longer than sixty minutes, quick- sand works very slowly, boxing rings are square, silverware and glasses can be made of plastic and tablecloths of paper, most are dialed by being punched (or pushed?), and most bathrooms dont have any baths in them. In fact, a dog can go to the bathroom under

27、 a tree - no bath, no room; its still going to the bathroom. And doesnt it seem a little bizarre that we go to the bathroom in order to go to the is it that a woman can man a station but as man cant woman one, that a man can father a movement but a woman cant mother one, and that a king rules a king

28、dom but a queen doesnt rule a? How did all those Renaissance men reproduce when there dont seem to have been any Renaissance writer is someone who writes, and a stinger is something that stings. But fingers dont grocers dont, haberdashers dont, hammers dont ham, and humdingers dont the plural of too

29、th is teeth , shouldnt the plural of booth be ? One goose, two geese - so one moose, two One index, two indices - one Kleenex, two If people ring a bell today and rang a bell yesterday, why dont we say that they a ball? If they wrote a letter, perhaps they also their tongue. If the teacher taught, w

30、hy isnt it also true that the preacher? Why is it that the sun shone yesterday while I shined my shoes, that I treaded water and then trod on the beach, and that I flew out to see a World Series game in which my favorite player flied we conceive a conception and receive at a reception, why dont we g

31、rieve a and believe a? If a horsehair mat is made from the hair of horses and a camels hair brush from the hair of camels, from what is a mohair coat made? If adults commit adultery, do infants commit infantry? If olive oil is made from olives, what do they make baby oil from? If a vegetarian eats v

32、egetables, what does a humanitarian eat? (And Im beginning to worry about those authoritarians.)And if pro and con are opposites, is congress the opposite of you have to believe that all English speakers should be committed to an asylum for the verbally insane. In what other language do people drive

33、 in a parkway and park in a driveway? In what other language do people recite at a play and play at a recital? In what other language do privates eat in the general mess and generals eat in the private mess? In what other language do people ship by truck and send cargo by ship? In what other languag

34、e can your nose run and your feet can a slim chance and a fat chance be the same and a bad licking and a good licking be the same, while a wise man and a wise guy are opposites? How can sharp speech and blunt speech be the same and quite a lot and quite a few the same, while overlook and oversee are

35、 opposites? How can the weather be hot as hell one day and cold as hell the next? How can the expressions Whats going on? and Whats coming off? mean exactly the samton and unbutton and tie and untie are opposites, why are loosen and unloosen and ravel and unravel he same? If bad is the opposite of g

36、ood, hard the opposite of soft, and up the opposite of down, why are badly and goodly, hardly and softy, and upright and downright not opposing pairs? If harmless actions are the opposite of harmful why are shameful and shameless behavior the same and pricey objects less expensive than priceless app

37、ropriate and inappropriate remarks and passable and impassable mountain trails are opposites, why are flammable and inflammable materials, heritable and inheritable property, and passive and impassive people the same and valuable objects less treasured than invaluable ones? If uplift is the same as

38、lift up, why are upset and set up opposite in meaning? Why are pertinent and impertinent, canny and uncanny, and famous and infamous neither opposites nor the same? How can raise and raze and reckless and be opposites when each pair contains the same is it that when the sun or the moon or the stars

39、are out, they are visible, but when the lights are out, they are invisible; that when I clip a coupon from a newspaper I separate it, but when I clip a coupon to a newspaper, I fasten it; and that when I wind up my watch, I start it, but when I wind up this essay, I shall end is a crazy can expressi

40、ons like Im mad about my flat, No football coaches allowed, Ill come by in the morning and knock you up, and Keep your pecker up convey such different messages in two countries that purport to speak the same can it be easier to assent than to dissent but harder to ascend than to descend? Why it is that a man with hair on his head has more hair than a man with hairs on his head; that if you decide to be bad forever, you choose to be bad for good; and that if you choose to wear only your left shoe, then your left one is right and your right one is left? Right?