y提高旧水泥砼路面结构层破碎料回填路基压实质量.doc
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1、ocusing on ways and means of improving and upgrading work, further development of three to split. (A) fully grasp no unauthorised created. The township no unauthorised created the existing building one household, one document survey and file storage work must be unconditional and full coverage. Main
2、 corridor leading to the town (road, river) village, the Central built-up area of the town on both sides must be to create a no unauthorised village. According to five hundred villages created and shanty towns, villages, old houses, reconstruction of old plant, expand create, upgrading creates files
3、, the real no unauthorised village created into the benefit of the people of very good thing. (B) to strictly manage count as unauthorised controls. Promoting the new control work to move the center of gravity, management measures to the front, and earnestly pipes effectively. A strict new unauthori
4、sed network responsibility. Sectors such as land, housing and basic stations (stations) and the Township of grid accountability mechanisms must be strictly in accordance with the new regulatory requirements, effective implementation of the area of responsibility of the new inspections, suppression,
5、demolition work to ensure that the new zero tolerance. Second, public security, water, electricity, water, oceans and fisheries, tourism collaboration, market supervision departments should strictly enforce the illegal construction of disposal of relevant provisions of the regulations, effective ful
6、filment of responsibilities, particularly in electricity and water supply, and other units may not be new illegal buildings to supply water and electricity supply. While more regulation to prevent personal privacy violations. Illicit trading in illegal construction in the Ministry of public security
7、 sector to strictly from the blow. Three is to create additional offence reporting system of incentives. According to building law and covers an area of nature, to report timely degree divided report grade, effective after the removal of certain incentives. (C) integrated implementation , building d
8、emolition, modification, use combination. Demolition is the means and purpose built is. To adhere to the building demolished, combination of construction and demolition waste, demolished with combined efforts to improve the scientific level of three to split; second, we must pay attention to three t
9、o split and five hundred and five water treatment, three of the four sides, the shackDistrict transformation, and dangerous old room transformation and two road sides, series work organic combined up, active do River, and along demolition work, and manpower advance village in the, and old residentia
10、l demolition work, to improved masses housing conditions and live environment; three to put three modified a split as traditional low, and small, and bulk industry structure transformation upgrade of important initiatives to caught, speed up advance industry Park, effective optimization park environ
11、ment提高旧水泥砼路面结构层破碎料回填路基压实质量一、简介和概况1、简介水泥砼路面具有强度高、养护成本低、使用寿命长等优点 ,为此在我国各等级公路中占有较大比例。随着交通量的剧增,汽车轴载日益重型化,逐渐出现路面破损,承载力下降等情况,严重影响了道路的使用功能,很多道路需要改造、翻新。我项目部积极响应“十二五”节能减排的国家政策,将旧水泥砼路面结构层破碎料作为路基填筑材料,为此我们针对提高旧砼路面结构层破碎料回填路基的压实质量展开QC活动。下图为旧砼路面结构层破碎料回填路基的施工工艺流程图:填隙碎石测量放样破碎原路面测量放样全幅开挖原路床填前压实回填旧水泥砼破碎料回填旧水泥稳定碎石破碎料碾
12、压检 测自检不合格自检合格监理工程师验收合格进入下一道工序2、小组概况本小组成立于2007年5月,具体概况见表1。小组概况 表1 小组名称泰安市公路局工程一处智慧之光QC小组课题名称提高旧水泥砼路面结构层破碎料回填路基压实质量小组类型现场型注册时间2007年5月注册编号TS-2011-05活动频率2次/周QC教育人均时间60小时活动出勤率100%活动时间2011.6-2011.10姓 名性别年龄文化程度组内职务职务组内分工何成安男41大学组长项目经理统筹部署、全面负责刘 涛男35大学副组长项目总工方案策划、技术总负责林海峰男28大学组员试验检测员 技术指导、数据分析安文涛男27大学组员计量员组
13、织协调、数据分析王 潇女24大学组员计量员 方案实施、报告整理张 强男29大学组员质检员方案实施、数据采集王 平男28大学组员测量员方案实施史 磊男30大学组员操作手方案实施 二、选题理由随着社会的进步和发展,保护环境,节省资源消耗和对旧材料的利用正日益受到人们的重视。泰楼公路大修工程本着节能减排,废旧材料再利用的原则,深入成本分析,落实质量过程控制,优化施工,争创环境友好型项目部的方针,根据设计制定方案:旧水泥砼、水泥稳定碎石破碎后,破碎料填筑路基。其中填筑路基的压实质量是其重要的控制方向。稳定产品质量、降低能源消耗,持续改进谋发展公司管理方针 项目部管理要求提高旧水泥砼路面结构层破碎料回填
14、路基压实质量,创精品工程 提高旧水泥砼路面结构层破碎料回填路基压实质量选择课题 小组活动计划表 表2-1 时间步骤进度 负责人6月7月8月9月10月P现状调查。全体成员目标值确定。何成安、刘涛原因分析。全体成员要因确认。全体成员制定对策。林海峰、安文涛D对策实施。全体成员C效果检查。张 强、安文涛A巩固措施。王 平、史 磊活动总结。王 潇制表人:王 潇 制表时间:2011年6月15日三、现状调查旧水泥砼面板经重型破碎锤破解至均匀粒径后(22cm33cm),进行重新铺筑,将旧水泥砼碎块推平后采用风化岩等填隙料填充后,用振动压路机碾压成形。对影响路基填筑压实质量的影响因素调查如下: 调查一、旧水泥
15、砼路面破碎粒径的调查旧水泥砼路面在重型破碎锤的破解过程中,由于旧水泥砼路面的破损程度不一和破碎锤破碎速度原因,致使旧水泥砼的破碎粒径不均匀。路基填筑后,局部聚集大(小)粒径旧水泥砼碎块填料,强度集中(较低),形成强度不均的路基结构。抽检破碎粒径见表3-1。试验段破碎粒径调查表 表3-1 检测项目实测值合格数合格率粒径(cm)22163336303826283232321985%3032263036322030203030调查二、旧水泥砼路面和旧水泥稳定碎石分类挖除调查旧水泥砼路面和旧水泥稳定碎石进行整体破碎并挖除,混填的破碎料由于自身强度不同,振动碾压后不易密实。调查三、填筑工艺和填隙料强度的
16、调查1、旧水泥砼破碎料、旧水泥稳定碎石破碎料的路基填筑,要进行分层逐次填筑,以确保强度较高的旧水泥砼破碎料在下,强度较低的水泥稳定碎石破碎料在上,振动压路机振动压实时使强度低的水泥稳定碎石振裂后嵌入旧水泥砼破碎料间隙中,而现阶段的试验段施工中,未将此作为控制重点,增大填料间的空洞形成机率。2、填隙料对旧水泥砼破碎料在旧水泥稳定碎石破碎料填充后,再次进行密实填充,填隙料采用强度低的风化岩,压实机械压实后强度相差较大,形成软硬强弱不均的路基填料。调查四、压实机械选择的调查旧水泥砼破碎料平铺填充填隙料后,采用压实机械进行反复碾压成形。普通18t振动压路机激振力有限,使水泥砼破碎料和填隙料之间的密实性
17、不足,达不到充分的密实,难以形成嵌挤稳定路基。调查五、检测方法的调查填筑成形路基的压实检测方法,根据现在规范要求,最接近于石方路基的检测,但它却不同于真正的石方路基。由于旧水泥砼碎块填料很容易形成不均匀粒径填料状况,检测方法上单一的采用沉降观测法,很难细致的反应整体路基的压实质量。试验段K14+300-K14+500段,施工过程中采取了用水准仪测沉降来控制压实遍数,碾压完后立即用贝克曼梁对本路段进行弯沉检测。通过数据(下表)对比分析发现,并不是沉降量小的路段弯沉值就小,路基的整体质量就好。沉降量与弯沉对比分析表 表3-2桩号终压与初压的沉降量(mm)终压后测得的弯沉值(0.01mm)K14+3
18、202148K14+3401162K14+3602156K14+3803168K14+4004170K14+4201138K14+4401134K14+4605180K14+4802176四、目标确定(一)目标设定小组确定本次活动的预期目标:提高旧水泥砼路面破碎料回填路基的压实质量,压实后的路基弯沉值控制在160(0.01mm)以下。(二)目标可行性分析在以往的施工中,压实后的路基弯沉值达到200(0.01mm)以下,相比于从前施工,我们项目部的施工人员施工经验更加丰富, 机械设备组合更加完善,试验检测方法更加精准。五、原因分析在各个施工工序中,填料的破碎粒径、旧水泥砼及水泥稳定碎石分类挖除、
19、填筑工艺及填隙料强度、压实机械选择、压实质量检测方法对提高旧水泥砼路面结构层破碎料路基填筑压实质量起着极大的作用。针对以上问题,小组成员进行了认真地讨论和分析,从人员、机械、材料、方法、环境五个方面找出了影响旧水泥砼路面结构层破碎料回填路基压实质量的9个末端因素,整理出如下原因分析图: and improve idle land of utilization, real achieved environment improved and productivity development mutual promoting total win. Five, firmly implement, pr
20、omoting work ahead, to create highlights. Third deployment, implementation of seven, then it is imperative to strengthen responsibility and improve the mechanisms and implementation. All localities and departments must be convinced that goals, going all out, mustering spirit, work together to ensure
21、 that this years objectives carry out tasks, at the forefront. First, we must strengthen the leadership to implement. Departments at all levels should always work and rural five water treatment, three to split in an important position, and carry the main responsibility, main leader personally, leade
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- 提高 水泥 路面 结构 破碎 回填 路基 实质
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