M7.5浆砌片石施工工艺.doc

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1、According to Office Party of mass line education practice activities led group of unified arrangements, units main led to for cadres workers Shang a times party lecture, due to himself level limited, only put this stage concentrated learning of experience today and everyone common with learning exch

2、ange, purpose is let we further deep understanding mass line of connotation, insisted party of mass line, do masses work, following main from four a aspects told: a, and full awareness party of mass line education practice activities of major meaning Partys 18 major distinct proposed to focus on the

3、 partys advanced nature and purity, in the party, with pragmatic and clean for the people as the main content of the partys mass line and educational practice. This is comrade XI Jinping as party General Secretary and adhere to strictly administering the party, strengthen the partys major decision i

4、s in line with the public expectations and strengthening the construction of learning-oriented service innovation of Marxist partys major deployment, is the important measure to advance the great cause of socialism with Chinese characteristics. First, carry out the partys mass line in education prac

5、tice, was carrying 18 of the party spirit, summon a powerful force for realizing the great rejuvenation of the Chinese nation the Chinese dream of urgent needs. Partys 18 to promote strategic deployment to building socialism with Chinese characteristics, presents two 100-year goal, namely, by 2020 C

6、hinas gross domestic product and per capita income of urban and rural residents in 2010 on the basis of double complete the building of a well-off society; the middle of this century into a prosperous, democratic, civilized and harmonious Socialist modern country, and on this basis, the Chinese drea

7、m of realizing the great rejuvenation of the Chinese nation. 18 Congress of the party, Comrade XI Jinping repeatedly expounded the Chinese dream. The basic connotation of the Chinese dream, is the national prosperity, national revitalization, the happiness of the people, China important to follow is

8、 to keep China Road, carry forward the spirit and cohesion strength of China, dream dreams of the people of China, but determined confidence, enhance self-awareness, achieve self-reliance, to build a stronger China, civilization, harmony, beauty, China, China, China. Strategic conception of China wa

9、s 18 the spirit of the enrichment and development of the party, conscientiously study the Chinese dream, leading people to hard to realize the Chinese dream, mass education activities in depth the fundamental starting point and ending point. Strengthen the education of the partys mass line, helps to

10、 train the collective consciousness of the unity of the party and the people, playing the Chinese dream ideological bases. Comrade Mao Zedong stressed that parties should have common language socialist countries must have unity of will. History has M7.5浆砌片石技术交底编号:001proved that a people and a nation

11、, if it does not have its own spiritual pillar, there is no unity of spiritual support, it means that no soul, will lose cohesion and vitality. Figuratively speaking, a sack of potatoes, quantity cannot be too a team, form a joint force; only like granite, so closely United to form invincible, no di

12、fficult means of strength. National rejuvenation of Chinese dream, not only embodies the common interests and pursuits, and covers a variety of groups and classes, has a wide applicability and inclusive, with a strong integrating force and lead the force. She embodies the aspirations of several gene

13、rations of Chinese, reflecting today . Into sex and purity, and the inevitable requirement of constantly improving the partys governing capacity. Strengthening the construction of the advanced nature and purity, the core problem is always maintaining the partys flesh-and-blood ties with the masses,

14、so that our party will always be the most wholehearted support of the masses. Must take the fundamental interests of the overwhelming majority of the people as the party all the starting point and ending point, the party has always been a common fate with the masses, this is the magic weapon for our

15、 party to always maintain the advanced nature and purity. Strengthening the construction of partys advanced nature and purity and enhancing the partys ruling ability will eventually be implemented to realize, safeguard and develop the fundamental interests of the overwhelming majority of the people.

16、 All the work merits this is a measure of the partys fundamental standards, is a measure of the partys advanced nature and purity standards. Believe who, depending on who, who, standing on the position of the overwhelming majority of the people are always, always realize, safeguard and develop the f

17、undamental interests of the overwhelming majority of the people, it is a touchstone of the Marxist party of judgement, is also sign of Marxist party is different from other political parties. Marxist political party has a clear political position and historical mission: for the interests of the vast

18、 majority of people, committed to the fundamental interests of the overwhelming majority of the people. From the day of the establishment of the Chinese Communist Party, always adhere to basic principles of historical materialism, for the interests of the most people as their goal, always serving as

19、 its fundamental purpose and values. Fully trust the masses, closely rely on the masses maintain flesh-and-blood ties with the masses is always the source of our party full of vigor and vitality, is always the most determined in the development of our party and our country. Conscientiously accept su

20、pervision by the masses, pay attention to listen to the masses assessment, which itself was the partys advanced nature and purity into practical action to realize the fundamental interests of the overwhelming majority of the people. At present, the party committees and leading cadres and the Governm

21、ent generally value the close relations with the masses, do a lot of productive work, but there are still some技术交底M7.5浆砌片石施工工艺一、编制依据1、建筑结构荷载规范(GB50009-2001)2、建筑地基基础设计规范(GB50007-2002)3、砌体结构设计规范(GB50003-2001)4、建筑边坡工程技术规范(GB50330-2002)5、公路工程技术标准(JTG1301-2003)6、建筑抗震设计规范(GB50011-2001)7、砌体工程施工质量验收规范(GB502

22、03_2002)二、设计说明挡墙形式根据设计图纸结合现场地形及土质情况确定断面尺寸形式。地面附加荷载以qk=10kpa考虑,因此地面挡墙4米范围内严禁通行重型车辆,砌筑大型构造物。保证地面4米范围内荷载控制在10kpa以内。 根据国标中国地震参数区划图(GB18306-2001)福建省区域划一览表,本挡墙位置基本烈度为6度,地震动峰值加速度为0.05,基本地震动反应谱特征周期为0.45s。1、根据现场建筑荷载情况,挡土墙采用重力式挡土墙(直立式)。如图所示:主要尺寸可分为两种类型(详见施工图纸)。2、挡土墙基础的埋置深度应符合以下要求:、一般土质地基。在保证开挖的基底面土质密实,且稳定性和承载

23、力均满足后,其埋置深度不宜小于800mm,墙趾顶部的土层厚度不小于200mm。、在遇到岩石时,基底要求嵌岩,岩石顶面要求平整。、挡土墙基底纵坡i不宜大于5%.当大于5%时,应在纵向将基础做成台阶式。台阶高度不宜大于0.5m。如图所示:3、挡墙构造和防、排水设施。、挡土墙每间隔1020m应设置一道变形缝(或伸缩缝)。当墙身高度不一,墙后荷载变化较大或地基条件较差时,应采用较小的变形缝间隔。另在地基岩性变化处,墙高突变处和与其他建(构)筑物连接处应设沉降缝。、根据现场实际情况,本挡墙设置如图所示排水系统。泄水孔孔径100mm左右,间距23m,按梅花形布置。泄水孔向外坡度为5%,最后一排泄水孔应高出

24、地面不小于200mm,泄水孔应保持直通无阻。反滤层的构造与反滤包同。、变形缝宽度为2030mm。缝内、外、顶三边填塞沥青麻絮或塞填沥青木板,塞入深度不宜小于200mm。4、挡土墙顶用水泥砂浆抹平,厚度20mm。挡土墙外露面用M10水泥砂浆勾缝。5、当在挡土墙上布置有水池(沉淀池、排污池)等可能造成渗水的设施时,必须做好防渗处理,防止渗水对挡土墙造成破坏。6、挡土墙要求材料。、用 M7.5级水泥砂浆砌筑墙身和基础。、片石强度等级不得低于MU30;砌体的自重必须达到22KN/m3.、墙背填料根据附近土源,尽量选用抗剪强度高和透水性强的砾石或砂土。当选用粘性土作填料时,宜掺入适量的砂砾或碎石,不得选

25、用膨胀土、淤泥质土、耕植土作填料。7、施工注意事项。、选用的片石必须合格,要求无风化,无裂纹,中部最小厚度不小于150mm,强度等级不低于MU30.、严格按挤浆法施工,保证砂浆饱满。砌体不应出现垂直通缝;避免通长的水平通缝。8、具体施工技术要求如下。三、M7.5浆砌片石施工工艺流程图 不合格项目重做 不合格项目重做不合格项目重做不合格项目重做做不合格项目重做合格合格不合格项目重做不合格项目重做测量放样开挖基坑工程师检查资料整理资料整理签证材检质查基土检底质查测复量核审资核料材质检查片质石量配合比选择砂质石量水质泥量资料整理浆砌片石砌体浆片砌石伸缩缝挂调线平勾缝运料资料整理工程师检查清理场地检查

26、验收签证砌质体量砂标浆号各部位尺寸审资核料保养余运土走余运料走拆料除棚分项质量评定 施工工艺流程图如下所示:三、施工工艺1、施工准备施工前须经测量工程师对该砌体工程进行平面放样,测量砌体部位标高,复核平面位置及标高是否符合设计图纸,如不符合,及时报告监理及相关部门,及时纠正。本段挡土墙施工,施工前按有关规定开挖、处理和检查基坑,当基底为岩层或砼时,先将基底表面清洗、湿润,再用坐浆法砌筑;当基底为土质时,可直接用坐浆法砌筑。另外,应了解施工位置是否合理,核对地形、地质情况及所对应的挡墙砌体形式(尺寸详见挡土墙设计图及有关说明)。如与设计不符,应及时与反馈给现场施工人员,经相关部门作出设计变更后,

27、以变更后的设计为依据进行施工,切不可盲目施工。组织构筑物施工人员和机具进场,安排临时设施的修建,确定材料进场路线,及时进场,按指定位置堆放,场地四周供电线路使用橡胶电缆,并加以保护。检修机械、设备。2、浆砌片石作业、原材料片石石料质地坚硬,不易风化、无裂纹,表面的污渍予以清除。片石形状不受限制,但其中部厚度不得小于15cm,用作镶面的片石表面平整、尺寸较大、边缘厚度不得小于15cm。片石强度等级符合设计要求,片石强度等级不小于mu30。砂浆水泥选用符合现行国家标准的硅酸盐水泥、普通硅酸盐水泥、矿渣硅酸盐水泥、火山灰质硅酸盐水泥、粉煤灰硅酸盐水泥或复合硅酸盐水泥。细骨料采用坚硬耐久、粒径在5mm

28、以下的天然砂,或采用硬质岩石加工制成的机制砂。水采用饮用水,当采用其他来源时,按国家现行的规定进行检验。外加剂、掺合料掺用量通过试验确定,并符合国家现行有关标准规定。砂浆强度等级按边长为70.7mm的立方体试件,在标准条件下养护28d的抗压极限强度表示。砂浆配合比设计、试件制作、养护及抗压强度取值符合规范的规定。砂浆的稠度以砂浆稠度仪测定的下沉度表示,为1050mm。砂浆随拌随用。当在运输或贮存过程中发生离析、泌水现象时,砌筑前重新拌和。已凝结的砂浆,不得使用。砂浆配合比应经过试验确定,在无试验数据的情况下,可参照以前工地数据(kg/m3),水泥:细集料:水=370:1500:280的配合比执

29、行。 3 、片石砌筑施工工艺片石砌筑采用挤浆法分层、分段砌筑:分段位置设在沉降缝或伸缩缝处,两相邻段的砌筑高差不大于120cm,分层水平砌缝大致水平。各砌块的砌缝相互错开,砌缝饱满。各砌层先砌外圈定位砌块,并与里层砌块连成一体。定位砌块选用表面较平整且尺寸较大的石料,定位砌缝满铺砂浆,不得镶嵌小石块。定位砌块砌完后,先在圈内底部铺一层砂浆,其厚度使石料在挤压安砌时能紧密连接,且砌缝砂浆密实、饱满。砌筑腹石时,石料间的砌缝互相交错、咬搭,砂浆密实。石料不得无砂浆直接接触,也不得干填石料后铺灌砂浆;石料大小搭配,较大的石料以大面为底,较宽的砌缝可用小石块挤塞,挤浆时用小锤敲打石料,将砌缝挤紧,不得

30、留有孔隙。定位砌块表面砌缝的宽度不大于4cm。砌体表面三块相邻石料相切的内切圆直径不大于7cm,两层间的错缝不小于8cm,每砌筑120cm高度以内找平一次。填腹部分的砌缝减小,在较宽的砌缝中用小石块塞填。砌体表面的勾缝符合设计要求,并在砌体砌筑时,留出2cm深的空缝。勾缝采用凹缝或平缝,勾缝所用砂浆强度不得小于砌体所用砂浆强度。当设计不要求勾缝时,随砌随用灰刀刮平砌缝。砌体砌筑完毕及时覆盖,并经常洒水保持湿润,常温下养护期不得少于7d。4、 砌体质量检查每100m3(小于100m3按100 m3计)砌体,做1组砂浆强度检查试件,并与砌体一起养护。同批试件强度平均值不小于设计值,且任意1组试件的

31、强度最低值不小于设计值的85%。砌体各项材料符合要求;砌缝宽度、错缝距离符合规定,砂浆铺填饱满,勾缝坚实、整齐 ;砌体位置、尺寸在允许偏差范围内。4、 砌体施工验收标准1、砌体工程所用砂浆的强度等级必须符合设计要求。用于检查砂浆强度的试件应在搅拌机出料口随机抽样制作。检验数量:同类型、同强度等级每100m3砌体为一批,不足100m3也按一批计。施工单位每批检验一次;监理单位检查试验报告。检验方法:施工单位进行砂浆强度试验;监理单位检查砂浆强度试验报告并进行见证取样检测或平行检验。2、砂浆砌体砌缝宽度、位置和砌筑方式符合下表:序号项目浆砌片石(mm)浆砌块石(mm)浆砌料石(混凝土砌块)(mm)

32、1表面砌缝宽度403015202每找平一次的砌筑高度120012003两层间竖向错缝8080100困难时丁石上下只能一面有竖缝4三块石料相接处的空隙705砌筑方式一丁一顺或二顺一丁一丁一顺3、砌体砌筑完毕应及时覆盖,并经常洒水保持湿润,常温下养护期不得少于7d。4、沉降缝、泄水孔、反滤层位置、数量和材料应符合设计要求。5、砌体表面应砂浆饱满、砌体整齐。宽度和错缝距离符合规定,无脱落和裂缝。沉降缝整齐垂直,上下贯通。泄水孔坡度向外,无堵塞现象。6、砌体尺寸的允许偏差和检验方法应符合下表:序号项目允许偏差(mm)检验方法基础墙1底、顶面高程片石2515测量不少于5处料石、砌块25152砌体厚度片石

33、+300+200尺量不少于5处料石、砌块+150+100 五、资料的填写基坑开挖前应填写施工测量高程放样表; 施工测量平面放样表;施工测量放样报验单;浆砌片石防护检验批质量验收记录表六、施工质量保证措施1、施工前,项目部召集项目部及施工队相关人员,进行施工技术交底。2、所有砂浆必须机械拌和,片石的厚度不应小于150mm(卵形和薄片者不得使用)。镶面石料应选择尺寸稍大并具有较平整表面,且应稍加粗凿。在角隅处应使用较大石料,大致粗凿方正。3、 水泥,对免检厂供应的水泥也应抽检,不合格不得使用,砼用砂、碎石应与配合比试验相一致,使用添加剂、砂石材料变更时应通过试验确定。4、 严格施工报验程序,施工队

34、自检,经理部复检合格后,才能报监理工程师验收。七、安全、环保、文明施工要求1、安全施工要求所有进入施工现场的施工人员必须配戴安全帽。作业人员不得穿拖鞋、高跟鞋、硬底易滑鞋进入施工现场。施工现场设置“施工重地,非施工人员严禁进入”的警示牌,作业现场必须有安全施工责任牌。夜间施工必须有充足的灯火照明。禁止酒后作业。所有进场施工的机械设备必须持有出厂合格证,机械操作手必须持有特种操作人员上岗证件。现场施工用电严格采用三级配电、两级保护,电缆采用五芯电缆,做到一机、一闸、一箱、一漏。2、环保施工要求施工便道途经村庄等人口积聚区时,运输车辆严禁鸣笛。施工便道派洒水车定期洒水,保证整个线路平整、干净,在风沙、扬尘天气勤洒水。施工现场垃圾不得随意丢弃。施工机械产生的废油不倒入水中,对于受污染的场地及时进行清理。加强机械设备的维修保养和达标活动,减少机械废气、排烟对空气环境的污染。施工完成后,植被破坏地段须恢复植草绿化。3、文明施工要求合理布置场地,材料堆放整齐,整洁有序,标识牌及宣传标语牌统筹设置。各种资料填写准确、及时、规范、收集齐全,归档有序。施工场地标牌醒目,各种规章制度健全。挂牌上岗,统一服装,精神饱满,遵守劳动纪律。做到施工文明,言行文明,处理好各种关系。- 11 -

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