混凝土小型空心砌块砌体工程.doc

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1、collection, storage, protection facilities can not meet the archives in the new era, the collection, collation, protection requirements, especially the lag of archive information management. 2, a part-time archivists of training and learning there is still a lack of the knowledge structure of archiv

2、ists is not comprehensive enough, still can not meet the needs of archives work, in-depth development of the archives work. Measures to solve the Bureau will in future work of archives management to be improved effectively. One is to overcome the shortage of personnel difficulties, concentrate on fi

3、nishing a good historical archives. The second is to further strengthen archives management training efforts, focusing on the study of archives management, utilization and archives laws and regulations etc. Knowledge to further enhance archival consciousness of cadres and workers and do a good job i

4、n the consciousness of the archives work, improve the efficiency in the use of archives. The third is to further improve the level of archives management equipment, with the continuous development of the archives work, overcome the financial resources, lack of material enlarged the file management o

5、f equipment investment. In a word, on the basis of insufficient to improve, global will work together, I Bureau of archives management work standardized track to play of archives work in the protection of peoples livelihood, improve the livelihood of the people, the fundamental role of serving the p

6、eoples livelihood.XX County Culture and sports and News Publishing Bureau is responsible for the main work is the work of sports culture, press and publication work. In order to further improve my bureau of agriculture related funds management, strengthen regulation of agriculture related funds, imp

7、rove efficiency in the use of agriculture related funds, effectively improve and enhance the peoples production and living standard of people. According to the (precious Zhengban pass 2015 No. 40) the spirit of the document, I Bureau in a timely manner to global within the scope of agriculture relat

8、ed special funds for the project source, uses, use of self-examination and self correction, self inspection shall be reported to the Sue.A work of self correction, agriculture related funds (a) report of lottery funds of agriculture related funds of self-examination and rectification workThe cat cha

9、se chase chase were received by 2013 the lottery public welfare fund project funds use: I Bureau Finance Bureau file your wealth 2013 No. 603 file, your wealth 2014 45 file. Your wealth 2014 45 file notice: 2013 farmer sports fitness project and village level public service basketball field construc

10、tion capital of 690 million yuan, of which (Wei Dong Tang Cun, Li Xiang Xin Cun, Li Xiang Fu Tuan Cun, Li Xiang Tan Yang village, Hong Cheng Zhen Shan Cun, Qingfeng Zhen Tai Xing Cun 1.15 million yuan). The funds have been the County Finance Bureau of the budget shares issued directly to the townshi

11、p wealth County tube office, has been allocated to the township specific units . your wealth chasing 2013 document No.混凝土小型空心砌块砌体工程混凝土小型空心砌块1 普通混凝土小型空心砌块普通混凝土小型空心砌块以水泥、砂、碎石或卵石、水等预制成的。普通混凝土小型空心砌块主规格尺寸为390mm190mm190mm,有两个方形孔,最小外壁厚应不小于30mm,最小肋厚应不小于25mm,空心率应不小于25%(图13-20)。图13-20 普通混凝土小型空心砌块普通混凝土小型空心砌块按其

12、强度分为MU3.5、MU5、MU7.5、MU10、MU15、MU20六个强度等级。普通混凝土小型空心砌块按其尺寸偏差、外观质量分为优等品、一等品和合格品。普通混凝土小型空心砌块的尺寸允许偏差应符合表13-30的规定。普通混凝土小型空心砌块尺寸允许偏差 表13-30项目优等品一等品合格品长度233宽度233高度233,4普通混凝土小型空心砌块的外观质量应符合表13-31的规定。普通混凝土小型空心砌块外观质量 表13-31项目优等品一等品合格品(1)弯曲(mm)不大于223(2)掉角缺棱个数不大于022三个方向投影尺寸的最小值(mm)不大于02030(3)裂纹延伸的投影尺寸累计(mm)不大于020

13、30普通混凝土小型空心砌块的抗压强度应符合表13-32的规定。普通混凝土小型空心砌块强度 表13-32强度等级砌块抗压强度(MPa)5块平均值不小于单块最小值不小于MU3.53.52.8MU55.04.0MU7.57.56.0MU1010.08.0MU1515.012.0MU2020.016.02 轻骨料混凝土小型空心砌块轻骨料混凝土小型空心砌块以水泥、轻骨料、砂、水等预制成的。轻骨料混凝土小型空心砌块主规格尺寸为390mm190mm190mm。按其孔的排数有:单排孔、双排孔、三排孔和四排孔等四类。轻骨料混凝土小型空心砌块按其密度分为:500、600、700、800、900、1000、1200

14、、1400八个密度等级。轻骨料混凝土小型空心砌块按其强度分为:MUL5、MU2.5、MU3.5、MU5、MU7.5、MU10六个强度等级。轻骨料混凝土小型空心砌块按尺寸偏差、外观质量分为:优等品、一等品和合格品。轻骨料混凝土小型空心砌块的尺寸允许偏差应符合表13-33的规定。轻骨料混凝土小型空心砌块尺寸允许偏差 表13-33项目优等品一等品合格品长度233宽度233高度233,4注:最小外壁厚和肋厚不应小于20mm。轻骨料混凝土小型空心砌块的外观质量应符合表13-34的规定。轻骨料混凝土小型空心砌块外观质量 表13-34项目优等品一等品合格品(1)缺棱掉角(个数)不多于0223个方向投影的最小

15、值(mm)不大于02030(2)裂缝延伸投影的累计尺寸(mm)不大于02030轻骨料混凝土小型空心砌块的密度应符合表13-35的规定,其规定值允许最大偏差为100kg/m3。轻骨料混凝土小型空心砌块密度 表13-35密度等级砌块干燥表现密度的范围密度等级砌块干操表现密度的范围50050090081090060051060010009101000700610700120010101200800710800140012101400轻骨料混凝土小型空心砌块的抗压强度,符合表13-36要求者为优等品或一等品;密度等级范围不满足要求者为合格品。轻骨料混凝土小型空心砌块强度 表13-36强度等级砌块抗压强

16、度(MPa)密度等级范围不大于5块平均值不小于单块最小值不小于MU1.51.51.2800MU2.52.52.0MU3.53.57.81200MU55.04.0MU7.57.56.01400MU1010.08.0混凝土小型空心砌块砌体1 一般构造要求混凝土小型空心砌块砌体所用的材料,除满足强度计算要求外,尚应符合下列要求:1对室内地面以下的砌体,应采用普通混凝土小砌块和不低于M5的水泥砂浆。2五层及五层以上民用建筑的底层墙体,应采用不低于MU5的混凝土小砌块和M5的砌筑砂浆。在墙体的下列部位,应用C20混凝土灌实砌块的孔洞:1底层室内地面以下或防潮层以下的砌体;2无圈梁的楼板支承面下的一皮砌块

17、;3没有设置混凝土垫块的屋架、梁等构件支承面下,高度不应小于600mm,长度不应小于600mm的砌体;4挑梁支承面下,距墙中心线每边不应小于300mm,高度不应小于600mm的砌体。砌块墙与后砌隔墙交接处,应沿墙高每隔400mm在水平灰缝内设置不少于24、横筋间距不大于200mm的焊接钢筋网片,钢筋网片伸入后砌隔墙内不应小于600mm(图13-21)。图13-21 砌块墙与后砌隔墙交接处钢筋网片2 夹心墙构造混凝土砌块夹心墙由内叶墙、外叶墙及其间拉结件组成(图13-22)。内外叶墙间设保温层。图13-22 混凝土砌块夹心墙内叶墙采用主规格混凝土小型空心砌块,外叶墙采用辅助规格(390mm90m

18、m190mm)混凝土小型空心砌块。拉结件采用环形拉结件、Z形拉结件或钢筋网片。砌块强度等级不应低于MU10。当采用环形拉结件时,钢筋直径不应小于4mm;当采用Z形拉结件时,钢筋直径不应小于6mm。拉结件应沿竖向梅花形布置,拉结件的水平和竖向最大间距分别不宜大于800mm和600mm;对有振动或有抗震设防要求时,其水平和竖向最大间距分别不宜大于800mm和400mm。当采用钢筋网片作拉结件,网片横向钢筋的直径不应小于4mm,其间距不应大于400mm;网片的竖向间距不宜大于600mm,对有振动或有抗震设防要求时,不宜大于400mm。拉结件在叶墙上的搁置长度,不应小于叶墙厚度的2/3,并不应小于60

19、mm。3 芯柱设里墙体的下列部位宜设置芯柱:1在外墙转角、楼梯间四角的纵横墙交接处的三个孔洞,宜设置素混凝土芯柱;2五层及五层以上的房屋,应在上述部位设置钢筋混凝土芯柱。芯柱的构造要求如下:1芯柱截面不宜小于120mm120mm,宜用不低于C20的细石混凝土浇灌;2钢筋混凝土芯柱每孔内插竖筋不应小于110,底部应伸入室内地面下500mm或与基础圈梁锚固,顶部与屋盖圈梁锚固;3在钢筋混凝土芯柱处,沿墙高每隔600mm应设4钢筋网片拉结,每边伸入墙体不小于600mm(图13-23);图13-23 钢筋混凝土芯柱处拉筋4芯柱应沿房屋的全高贯通,并与各层圈梁整体现浇,可采用图13-24所示的做法。图1

20、3-24 芯柱贯穿楼板的构造在68度抗震设防的建筑物中,应按芯柱位置要求设置钢筋混凝土芯柱;对医院、教学楼等横墙较少的房屋,应根据房屋增加一层的层数,按表13-37的要求设置芯柱。抗震设防区混凝土小型空心砌块房屋芯柱设置要求 表13-37房屋层数设置部位设置数量6度7度8度四三二外墙转角、楼梯间四角、大房间内外墙交接处外墙转角灌实3个孔;内外墙交接处灌实4个孔五四三六五四外墙转角、楼梯间四角、大房间内外墙交接处,山墙与内纵墙交接处,隔开间横墙(轴线)与外纵墙交接处七六五外墙转角,楼梯间四角,各内墙(轴线)与外墙交接处;8度时,内纵墙与横墙(轴线)交接处和洞口两侧外墙转角灌实5个孔;内外墙交接处

21、灌实4个孔;内墙交接处灌实45个孔;洞口两侧各灌实1个孔芯柱竖向插筋应贯通墙身且与圈梁连接;插筋不应小于112。芯柱应伸入室外地下500mm或锚入浅于500mm基础圈梁内。芯柱混凝土应贯通楼板,当采用装配式钢筋混凝土楼板时,可采用图13-25的方式实施贯通措施。图13-25 芯柱贯通楼板措施抗震设防地区芯柱与墙体连接处,应设置4钢筋网片拉结,钢筋网片每边伸入墙内不宜小于1m,且沿墙高每隔600mm设置。4小砌块施工普通混凝土小砌块不宜浇水;当天气干燥炎热时,可在砌块上稍加喷水润湿;轻集料混凝土小砌块施工前可洒水,但不宜过多。龄期不足28d及潮湿的小砌块不得进行砌筑。应尽量采用主规格小砌块,小砌

22、块的强度等级应符合设计要求,并应清除小砌块表面污物和芯柱用小砌块孔洞底部的毛边。在房屋四角或楼梯间转角处设立皮数杆,皮数杆间距不得超过15m。皮数杆上应画出各皮小砌块的高度及灰缝厚度。在皮数杆上相对小砌块上边线之间拉准线,小砌块依准线砌筑。小砌块砌筑应从转角或定位处开始,内外墙同时砌筑,纵横墙交错搭接。外墙转角处应使小砌块隔皮露端面;T字交接处应使横墙小砌块隔皮露端面,纵墙在交接处改砌两块辅助规格小砌块(尺寸为290mm190mm190mm,一头开口),所有露端面用水泥砂浆抹平(图13-26)。图13-26 小砌块墙转角处及T字交接处砌法小砌块应对孔错缝搭砌。上下皮小砌块竖向灰缝相互错开190

23、mm。个别情况当无法对孔砌筑时,普通混凝土小砌块错缝长度不应小于90mm,轻骨料混凝土小砌块错缝长度不应小于120mm;当不能保证此规定时,应在水平灰缝中设置24钢筋网片,钢筋网片每端均应超过该垂直灰缝,其长度不得小于300mm(图13-27)。图13-27 水平灰缝中拉结筋小砌块砌体的灰缝应横平竖直,全部灰缝均应铺填砂浆;水平灰缝的砂浆饱满度不得低于90%;竖向灰缝的砂浆饱满度不得低于80%;砌筑中不得出现瞎缝、透明缝。水平灰缝厚度和竖向灰缝宽度应控制在812mm。当缺少辅助规格小砌块时,砌体通缝不应超过两皮砌块。小砌块砌体临时间断处应砌成斜槎,斜槎长度不应小于斜槎高度的2/3(一般按一步脚

24、手架高度控制);如留斜槎有困难,除外墙转角处及抗震设防地区,砌体临时间断处不应留直槎外,可从砌体面伸出200mm砌成阴阳槎,并沿砌体高每三皮砌块(600mm),设拉结筋或钢筋网片,接槎部位宜延至门窗洞口(图13-28)。图13-28 小砌块砌体斜槎和直接承重砌体严禁使用断裂小砌块或壁肋中有竖向凹形裂缝的小砌块砌筑;也不得采用小砌块与烧结普通砖等其他块体材料混合砌筑。小砌块砌体内不宜设脚手眼,如必须设置时,可用辅助规格190mm190mm190mm小砌块侧砌,利用其孔洞作脚手眼,砌体完工后用C15混凝土填实。但在砌体下列部位不得设置脚手眼:1过梁上部,与过梁成60角的三角形及过梁跨度1/2范围内

25、;2宽度不大于800mm的窗间墙;3梁和梁垫下及左右各500mm的范围内;4门窗洞口两侧200mm内和砌体交接处400mm的范围内;5设计规定不允许设脚手眼的部位。小砌块砌体相邻工作段的高度差不得大于一个楼层高度或4m。常温条件下,普通混凝土小砌块的日砌筑高度应控制在1.8m内;轻骨料混凝土小砌块的日砌筑高度应控制在2.4m内。对砌体表面的平整度和垂直度,灰缝的厚度和砂浆饱满度应随时检查,校正偏差。在砌完每一楼层后,应校核砌体的轴线尺寸和标高,允许范围内的轴线及标高的偏差,可在楼板面上予以校正。5 芯柱施工芯柱部位宜采用不封底的通孔小砌块,当采用半封底小砌块时,砌筑前必须打掉孔洞毛边。在楼(地

26、)面砌筑第一皮小砌块时,在芯柱部位,应用开口砌块(或U形砌块)砌出操作孔,在操作孔侧面宜预留连通孔,必须清除芯柱孔洞内的杂物及削掉孔内凸出的砂浆,用水冲洗干净,校正钢筋位置并绑扎或焊接固定后,方可浇灌混凝土。芯柱钢筋应与基础或基础梁中的预埋钢筋连接,上下楼层的钢筋可在楼板面上搭接,搭接长度不应小于40d(d为钢筋直径)。砌完一个楼层高度后,应连续浇灌芯柱混凝土。每浇灌400500mm高度捣实一次,或边浇灌边捣实。二浇灌混凝土前,先注入适量水泥砂浆;严禁灌满一个楼层后再捣实,宜采用插入式混凝土振动器捣实;混凝土坍落度不应小于50mm。砌筑砂浆强度达到1.0MPa以上方可浇灌芯柱混凝土。混凝土小砌

27、块砌体质量混凝土小砌块砌体的质量分为合格和不合格两个等级。混凝土小砌块砌体质量合格应符合以下规定:1主控项目全部符合规定;2一般项目应有80%及以上的抽检处符合规定或偏差值在允许偏差范围内。混凝土小砌块砌体主控项目:1小砌块和砂浆的强度等级必须符合设计要求。抽检数量:每一生产厂家,每1万块小砌块至少应抽检一组。用于多层以上建筑基础和底层的小砌块抽检数量不应少于2组。砂浆试块的抽检数量:每一检验批且不超过250m3砌体的各种类型及强度等级的砌筑砂浆,每台搅拌机应至少抽检一次。检验方法:查小砌块和砂浆试块试验报告。2砌体水平灰缝的砂浆饱满度,应按净面积计算不得低于90%;竖向灰缝饱满度不得小于80

28、%;竖向缝凹槽部位应用砌筑砂浆填实,不得出现瞎缝、透明缝。抽检数量:每检验批不应少于3处。检验方法:用专用百格网检测小砌块与砂浆粘结痕迹,每处检测3块小砌块,取其平均值。3墙体转角处和纵横墙交接处应同时砌筑。临时间断处应砌成斜槎,斜槎水平投影长度不应小于高度的2/3。抽检数量:每检验批抽20%接槎,且不应少于5处。检验方法:观察检查。4砌体的轴线偏移和垂直度偏差应符合表13-38的规定。混凝土小砌块砌体的轴线及垂直度允许偏差 表13-38项次项目允许偏差(mm)检验方法1轴线位置偏移10用经纬仪和尺检查或用其他测量仪器检查2垂直度每层5用2m托线板检查全高10m10用经纬仪、吊线和尺检查,或用

29、其他测量仪器检查10m20抽检数量:轴线查全部承重墙柱;外墙垂直度全高查阳角,不应少于4处,每层每20m查一处;内墙按有代表性的自然间抽10%,但不应少于3间,每间不应少于2处,柱不少于5根。混凝土小砌块砌体一般项目:1砌体的水平灰缝厚度和竖向灰缝宽度宜为10mm,但不应大于12mm,也不应小于8mm。抽检数量:每层楼的检测点不应少于3处。检验方法:用尺量5皮小砌块的高度和2m砌体长度折算。2小砌块砌体的一般尺寸允许偏差应符合表13-39的规定。小砌块砌体一般尺寸允许偏差 表13-39项次项目允许偏差(mm)检验方法抽检数量1基础顶面和楼面标高15用水平仪和尺检查不应少于5处2表面平整度清水墙

30、5用2m靠尺和楔形塞尺检查有代表性自然间10%,但不应少于3间,每间不应少于2处混水墙83门窗洞口高、宽(后塞口)5用尺检查检验批洞口的10%,且不应少于5处4外墙上下窗口偏移20以底层窗口为准,用经纬仪或吊线检查检验批的10%,且不应少于5处5水平灰缝平直度清水墙7拉10m线和尺检查有代表性自然间10%,但不应少于3间,每间不应少于2处混水墙10603 notice: lottery public welfare funds support the place of sports funding 46.05 million yuan. Among them: (a) 2013 farmer

31、sports fitness project and the two project 12.6 million yuan, including (Qing Feng Zhen Qing Ling Cun Da Qiao Tun, Hong town Wanghuacun Wang Gang Tun, Qing Feng Zhen Da Tong Cun Ma Tun, Wei Zhen Da Lian Cun Lian Tang tun the 3.15 million yuan); (II) 2013 Township farmer sports fitness project site c

32、onstruction funds 27.45 million yuan, including (XX town, Qingfeng County, XX County Township, XX County, the stone village the 9.15 million yuan); (three) in 2013 Urban and rural landscape transformation of the fifth phase project of village basketball field construction funds subsidy of $6 million

33、, including (Qing Feng Zhen Qing Ling Cun Xi Tun, Hong Cheng Zhen Shi Zhai Cun, Da Wei Zhen Da Wei cooperatives in the county 2 million yuan). These funds has the County Finance Bureau budget shares issued by the Bureau, the Bureau has allocated by township wealth County tube office moved to the tow

34、nship specific units.2014 the lottery project funds use: I received Finance Bureau file your wealth chasing 2014 document No. 453. Your wealth chasing 2014 document No. 453 notice: lottery public welfare funds support the place of sports funding 19.45 million yuan, including: (a) 2014 farmer sports

35、fitness project township level basketball field construction funds of 13.45 million yuan (XX County township of 13.45 million). The fund the fund has County Bureau of finance budget shares issued directly to township wealth County tube office, has allocated to Xiang; (II) XX Chaoyang County youth sp

36、orts club funds 6 million yuan. Due to Through inquiry, higher-level units, existence of juvenile sports clubs dont know Chaoyang, juvenile sports clubs dont know Chaoyang specific account, username, account, so County Bureau of finance budget shares has not issued the capital budget. (two) report o

37、f rural social undertakings and public service related funds of self-examination and rectification workAgricultural use of project funds: the financial sector arrangement project, cultural station free of special funds, which belongs to the rural social undertakings and public service. I received Fi

38、nance Bureau file your wealth chasing 2013 146; your wealth chasing 2013 303; your wealth chasing 2013 221; your wealth chasing 2014 59 notice.2013 year and 2014 annual budget funds are 36.5 million yuan, Sports Bureau unified management of the use of funds, cultural stations by activity material re

39、imbursement. Project support object, project implementation units are harbor town, Da Wei Zhen, Zhen Qing Feng root Township, In Li Xiang, the stone village, Wu Yue 7 township cultural station. The second is rural cultural construction of special funds, which belongs to the rural social undertakings

40、 and public service. I received to finance bureau file my bureau were sent to your wealth chasing 2013 163; notify your wealth chasing 2013 550, 2013 annual pre settlement funds is 79.8 million yuan, the use of funds is mainly transferred to place of finance of villages and towns each administrative village accounts by the township caiban. Project support objects and the county of 105 administrative villages.

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