p二灰级配碎石基层施工方案(工程队).doc
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1、Manipulator is now used as a industrial robots in use, the control objectives often appear often in industrial automation. Industrial automation technology has gradually matured, as mature a technology line has been rapid development in industrial automation as a separate subject. Manipulator applic
2、ation began to filter into welding, logistics, mechanical processing, and other industries. Especially at high or very low temperatures, full of poisonous gases, high radiation case, robot in similar circumstances showed great use also brings great convenience to the staff. Precisely because of this
3、 robot to get peoples attention began to be a high degree of development. Labor rates, working conditions, labor intensive aspects of promoting development. Both at home and abroad to develop the PLC (programmable logic controller) is in various special circumstances and under special conditions set
4、 for mechanical devices. Now turned on the development of the microelectronics automatic control technology and the rapid development of the trains, the success of PLC hardware software and simulation control win big and successful development, now continues to develop as a factory automation standa
5、rds. Because robots are good development of the technology makes a good optimization of productive capital, and robot shows this unique advantages, such as: has good compatibility, wide availability, hardware is complete, and programming that can be mastered in a short time, so in the context of ind
6、ustrial PLC applications became ubiquitous. Manipulator in many developed country agriculture and industry has been applied, such as the use of mechanical harvesting large areas of farmland, repeated operations on the high-speed line that uses a robotic arm, and so on. Today, the high level of autom
7、ation combined with restrictions on the manipulator development level is slightly lower than the international. The design is mainly arm welding machine by PLC Automation control. This of design let designers on in school by learn of has a must of consolidation, understand has some usually didnt opp
8、ortunities awareness in world range within some leading level of knowledge has has must awareness, hope designers can in yihou of design in the can success of using in this design in the proceeds of experience 1.2 manipulator in both at home and abroad of research profile automation mechanical arm r
9、esearch began Yu 20th century medium-term, after years with with computer and automation technology of development, Makes mechanical arm on the Grand stage of industrial automation and shine, gradually became an industrial evaluation standards, and its importance can be seen. Now original robotic ar
10、m spent most of mass production and use on the production line, which is programmed robotic arm. As the first generation of manipulator position control systems main features, although not back several generations that can detect the external environment, but can still successfully complete like wel
11、ding, painting, delivery as well as for materials simple movements. Second generation mechanical arms are equipped with sensors and manipulators have the environment there is a certain amount of sense, when the mechanical arm is to use the program as a basis. Difference is that the robot begand二灰级配碎
12、石基层施工方案一、 工程概况: 张石高速K71+925.8-K74+800,长2.87千米,属石太高速旧路加宽段。主线为18cm厚二灰级配碎石基层。二、技术要求:弯沉小于487(0.001mm),压实度达到98%(极值94%),平整度8MM,纵断高程控+5,-10MM,宽度不小于设计要求,厚度-8MM(极值-15MM),横坡0.3%,7天无侧限抗压强度1.0Mpa。三、 混合料组成设计:按技术规范要求做好原材料的试验及配合比设计的试验工作。经试验确定配合比为:石灰:粉煤灰:碎石=8:13:79,碎石掺配比例1-3:0.5-1:石屑=33:34:33。四、施工准备工作:(1)组织准备:组织人员到
13、位,岗位清楚、分工明确、责任到人。 (2)技术准备:组织相关业务人员学习施工图纸及二灰级配碎石施工技术规范,对施工人员进行技术交底。(3)现场准备:所需施工人员、材料、机械设备进场到位,对机械设备检修、保养使之处于良好状态。五、施工方案:采用集中厂拌,自卸汽车运输,在下承层打格备二灰碎石混合料,推土机、平地机整平作业,半幅施工。厂拌法施工工艺流程的顺序如下:碾压整形接缝的处理运输混和料摊铺混合料拌和站拌和准备下承层施工放样养生(1)施工准备下承层检查:在基层施工前,对已通过交工验收的水泥稳定石屑底基层进行全面的检查,表面应平整、坚实,并具有规定横坡度,所有杂物全部清除干净,不能有积水、松散、翻
14、浆、弹软等现象。拌和站安装调试:安装一台WDB500型稳定粒料拌和站,生产能力为500th,拌和站安装调试完毕,具备正常生产能力,正式拌和前,先试拌以检查混合料的含水量、均匀性和级配情况。并保证集料的最大粒径和级配符合要求。备料:石灰应采用机械筛过筛后的消解石灰,并选择宽敞、靠近水源且地势较高的场地堆放,堆放时间较长时应加以覆盖,生石灰应在使用前710天充分消解,消解后的石灰应保持一定的湿度,不得产生扬尘,也不可过湿成团。干粉煤灰和湿粉煤灰都可以使用,但湿粉煤灰的含水量不宜超过35%。场地集中堆放的粉煤灰应予以覆盖,以避免扬尘或雨水冲刷。最大粒径不应大于30mm且不含杂质,在运输时应保证潮湿并
15、加以盖篷布,以防止粉尘飞扬产生污染。部分凝结成块的应敲碎。现场施工机械设备:施工现场配置自卸汽车、推土机、平地机、洒水车、振动压路机等机械用于混合料的摊铺整平、碾压及养生。对机械设备定期进行检修,确保使用状况完好。配合比设计:在正式开工前,进行各种材料的调查采购及配合比试验,做出几组不同配合比的混合料击实试验,确定最佳含水量和最大干密度,制备无侧限抗压试件,进行强度试验。试验前试件规定温度下保湿养生6天,饱水24h后进行无侧限抗压强度试验,原材试验结果及配合比方案报监理工程师审批合格后方可进行。培路肩:在交验合格的底基层路肩两侧挂线,自卸车运料,填料同路基料,人工按路基松铺系数整平后,压路机压
16、实。(2)主要施工工序及技术要求测量放线:在土基上用全站仪放出边线,直线每20米设一桩,平曲线段每10米设一桩。混合料的拌和、运输:混合料拌和时,拌和的时间和投料称量应准确无误,并根据集料和粒料的含水量调整加水量。指派专人随时检查混合料的均匀性和含水量。新拌混合料含水量应比最佳含水量大1.0-2.0,以补充运输、施工过程中的水分损失。并定期对拌和机中“死区”即材料不产生运动或得不到充分拌和的地方进行清除。拌和完成后及时覆盖并立即将混和料运送至施工现场。摊铺整形:混合料运至施工现场,按松铺系数计算出混合料的用量,均匀卸在打好的方格内用推土机初步整平。在直线段,平地机由两侧向路中心进行刮平:在曲线
17、段,平地机由内侧向外侧进行刮平。必要时,再返回刮一遍。用压路机再初平的路段上快速碾压一遍,再用平地机进行整形,局部低洼处用齿耙将其表层5cm以上耙松,并用均匀的混合料进行找平。最后用平地机整形一次,并将高处料直接刮出路外。料离析现象,铲除局部粗集料“窝”后用均匀混合料填补,齿耙整平。碾压:碎石层应在最佳含水量时进行碾压,按重型击实试验法确定压实度,基层压实度应在98%以上。每个作业面配置2台振动压路机进行碾压。碾压时轮迹与路基中心线平行,直线段由低到高,超高段由内侧到外侧依次连续均匀进行,碾压速度为头两遍1.5-1.7Kmh,以后为2.02.5Kmh。每道碾压与上道碾压相重叠12至13轮宽,直
18、至压实度符合要求,一般为4-6遍。路幅两边应适当增加碾压遍数。压实后表面应平整、无轮迹或隆包。严禁压路机在已成型的或正在碾压的路段上调头、急刹车,防止破坏已完工的路段。在各施工段端头4-5m范围内,压路机应沿路面横坡由低向高适当碾压,以防止纵向碾压端头时使混合料的端头方向滑移,形成裂缝或松散现象,在压路机不能作业的地方采用小型夯实机进行夯实,未压实或部分压实的混合料被雨淋湿,应挖除换填。 碾压过程中,使表面始终保持潮湿,若出现“弹簧”、“松散”、“起皮”、“壅包”等现象,应用人工及时将上述部位的混合料清除,换填新的混合料并进行碾压,使其符合设计规范要求;压实过程中,检测人员必须现场测量控制高程
19、及平整度,并针对控制中发现的问题通过进一步改进施工工艺来解决。横向接缝处理:在已摊铺完成的基层末端,用人工将末端含水量适中的混合料弄整齐,紧靠混合料放两根方木,高度与混合料的压实厚度相同。然后整平紧靠方木的混合料,方木的另一侧用砂砾或碎石回填3m长,将混合料碾压密实。重新摊铺混合料之前,将砂砾或碎石和方木除去,并将横向接缝附近的下承层顶面清扫干净后,摊铺机返回到已压实层的末端重新摊铺混合料。如压实层末端未用方木作支撑处理,在碾压后末端成一斜坡,则在第二天开始摊铺新混合料之前,应将末端斜坡挖除,并挖成一横向(与路中心线垂直)垂直向下的断面。挖出的混合料加水到最佳含水量拌匀后仍可使用。养生及交通管
20、制:基层碾压完成经压实度检验合格后的第二天或第三天开始养生,养生期不少于7天,养生方法为土工布覆盖,用带有喷淋装置的洒水车喷洒水雾,严禁用大水流进行冲刷,养生期间基层表面应始终保持潮湿状态,养生期间应封闭交通。六、工程质量保证体系及措施 我单位始终坚持“质量第一,信誉至上”的方针。为使本合同段工程达到优良标准,我们制定了质量目标:确保工程质量优良,分项工程质量评定90分以上。 在本合同工程的施工过程中,由总工程师负责工程施工质量。设工程技术科、质量检验科、试验室、测量监控组,施工班组设质量检查员。各质量控制部门和人员各司其职而又相互协调与配合,组成一个有机的工程质量保证体系(质量保证体系框图详
21、见附表3)1、 质量控制机构设置施工质量控制机构设置如下图所示:班组质检员项目部质检员测量监控组试验室工程技术科质量检验科项目总工程师2、 质量保证的措施(1) 组织措施: 实行全面质量管理,强化质量意识,牢固树立“以质量求生存,以质量求发展”、“质量就是效益,质量就是生命”的观念。建立全技术交底、质量检查、工序间检查、交接检、原材料进场检验各种规章制度,完善质量保证体系。项目领导亲自抓质量,技术人员负责好质量,质检人员管好质量,施工人员把好质量关。 明确提出各个工程项目的质量要求和质量目标,能及时发现和预防一些工程中容易出现和忽视的问题。坚持自检和互检制度,做到施工人员检查与技术人员检查相结
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