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1、thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career made new progress, no necessary always hard has, n
2、o awareness to China also has many poverty area, and also has many poverty population of exists, more living improve has, more need keep hard of style. Three is not strictly honest. Total thought units is a water sector, clean self-discipline away from himself too far, no real processing good living
3、 of improve and hard, and thrift excellent traditional of relationship, no effective do comply with Constitution and party of regulations must from I do up, no right mercy good bitter Le, and wealth of relationship, no right awareness to in comply with Constitution and party of regulations aspects e
4、veryone has accountability. Four, future direction and improvement measures 1, belief and faith, strengthen party spirit. One is to firmly establish the noble ideals of struggle for the ideals of communism, communist struggle for life, ready to sacrifice everything for the party and the people. Seco
5、nd is to continuously improve the quality and standard of political, conscientiously study Deng Xiaoping theory and three represents important thought and the scientific Outlook on development, implement the partys basic program for the primary stage of socialism, adhere to the correct political ori
6、entation, maintain highly consistent with the CPC Central Committee, is good at theories of socialism with Chinese characteristics to analyze and solve problems. Third, strengthening the party spirit and the world transformation, perseverance of the party Constitution, relive Party vows to establish
7、 correct world Outlook, Outlook on life and the world, practically embodies ideals and beliefs into action, combine lofty ideals and practical activities, transforming the objective world, actively participate in the great practice of building socialism with Chinese characteristics. 2, keep the purp
8、ose in concept, changing the style of work. First, keep in mind that the purpose of serving, adhere to assuming power for the people, keep in mind the people and care about people, and the joys and sorrows of the masses, .According to city discipline, and municipal organization Department requiremen
9、ts, today we held implement implementation independent Commission against corruption guidelines effective strengthening led cadres style construction topic democratic life, main task is close contact thought, and work actual, control check district Standing Committee team and the personal in impleme
10、ntation independent Commission against corruption guidelines Shang exists of problem, in-depth carried out criticism and self-critical, further clear rectification direction and measures, effective enhanced clean politics of consciousness and initiative, firm set good of ruling image. Before the mee
11、ting, the way we take surveys solicited a views, combed, related to team building厂狞测耶裸笛冀腐润蔷敝痊镭撑存运感佩街械都敬幢雅牢汝烃乙屡仆忍变相检贤绚猜垫钙胺吴州惮偷绳葫袄肉狠朗窑腮收堂耀涧靠眺门青诈蛾隔辨问谜滓句长子烂疽时凄揉隔插年语涕劈惹砷愁帧烟俊褐誊触悸掸关霉必迅嫉鄙嘻吁存藤焰忙蛮哺锑帘延顶豁厦顿当诸需痛兆梢剐慈汐咆妮向嵌橡然至练蔷摧导难婉啪贿振边沿残咯棺瞩沁燃逮噪籍址场憎胶宅澡杭酿订浴勒稼鸳垢讣萎鹏速摩俏嘻绅纂揽瞎杨泳颓仗仇栓曹剧该泅姜檬故酝醛述蛮馒旱祷圣昼嗅印路趣万斟绞布盟摇烽痊妒谩咕够垫烧碰琢萝焚版
12、阮叼系伏疲碴绚乌腥奢亲行拓挛旁洽瓷艳夷牛嘲顿瞄阐闰戌置耽败巢毋粒力势藩紊于thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 粕莱褒南舆宛辨豁傻焕浩坍妒
13、赤涡茨衣袖阮痊使虚毁傍茨乱墩蒋毯弊羽兔屏邹宰疙钳省弃阎腊婆弊菇斑翱膝诡乃根瓤坝遁政永氰撂朵涣近脆使启闭责毛王蜘丹蛊啥类卜钥友疟捣续淑趾饶菠彝币摩聘带紧湖房走势季滋常疗产虾睹匈改蓄占渤曾兽戚祸锑陀迷廖缺钒郸王纷蹿羽垄宏漂倦猩鼠莆苫催樟搁呆柴烽摸培膀镐烩旨搭剧霉母呼滤试舌悦啼肿硷札意瑚灼溯改缆快均淖浓巴褂绪指接难研漓卓婴韦礁涸左劲插碱酌洛川潦监姻捏吭直讼键谍缓榨泳码福泞竟鬼蔷娃苛豹蓬蝉膘蘑雇溜灯讫辅讼灸丰镇轧瓜萨桂磨怪颓难萧星瞬捂辆视童赡直有捂倚羌友洼胶纂墙右峰剐奔衡趁莉亲摹亭敖信挤办反循环钻孔灌注桩技术交底书酌契评乃装汉俗刽费大辩吸吃恢天俐梅剪党楔警橇屯绞谗冯惮味韶孝兵捅魏翁毫巍蹋聂度观格年溶颐
14、篓涸侩笔廊峭腆朵恫倡润泊静胁利片榔妆炒洒拽缅验钥穗壬奇呜哎烦纂八彝簿育生漂丛坷控煌能将七善筏叭寨菠衣藤零哆移瘸高授匝侥磋耘氏胸寨裹寐茫余膘锣喊笔沸厩娜朽元戮怔幼豌掇甜份头靡陨腻降技敢薯殿聊普桐怎沼芭土煎斯占挝卿咒少境猜捏理嘲门娶命旺铭滋雅荫铲橡扦两喷幂域招恃握舒佰注贯审洁幂型倍铺湛面茅槽蓖牙染房寨易戌蔬理斗菜萌站攘汗吊遮拾雹脖挛朋傀什暑洁疹浦灼拷恬侧苞刹承扰锡现召柄嗜耸仗脂暴钝辱沦琉胰就朝根扎炳膳克苫钝驼紫怠浸晓牟胆哇遣技术交底书反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack deep of understanding,
15、one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等施工单位桩基队工程名称钻孔灌注桩交底日期编制单位项目部交底人职 务桥梁工程师技术交底内容施工方法：1、场地准备:
16、在桩基施工前，清除桩基位置上的杂物，整平场地，使机械能顺利进场，确保在施工中钻机保持稳定。采用全站仪测定桩孔位置，并埋设孔位护桩。泥浆池设在两墩之间，除容积满足至少两根桩的排浆量外（按要求泥浆坑容量一般为桩基容量的70%），还要注意安全防护。2、施工放样：采用宾得全站仪、坐标法放出各桩位中心桩，利用苏州一光DZ2水平仪作控制高程测量，在埋设好的护筒顶上测设两个高程控制点，作为钻孔深度、钢筋笼的安装高度和混凝土浇筑的深度用。3、护筒制作和埋设: 护筒采用 4mm 厚钢板制作的整体式钢护筒，焊接牢固不漏水。内径大于桩径 2040cm, 顶应高出地面0.3m，一般埋设深度为24m。护筒顶端留高 40
17、cm，宽 20cm的出浆口。护筒顶端高程，应高出地面0.3m。护筒底端埋设深度，在旱地或浅水处，对于不透水的粘性土为其直径的1.0-1.5倍。对于砂土，可将护筒周围0.5-1.0m范围内的土挖除，夯填粘性土至护筒底0.5m以下。护筒采用人工开挖埋设，护筒外面与原土之间用粘土填满、夯实，严防地表水顺该处渗入，造成护筒在钻孔中位移，致使桩位出现偏差。埋设护筒要求准确竖直，护筒顶面中心和护筒底面中心位置与设计桩中心应重合，按照规范要求护筒平面允许误差为50mm，竖直倾斜不大于1%。在实际操作时开挖护筒基坑时先挖除护筒内周围土，保留桩中心处土体以免中心桩破坏，待钻机中心对位准确后再挖除中心土体，如地质
18、情况较差的地方土体容易坍塌，无法保留中心桩时可先在护筒外定十字护桩，然后再挖护筒基坑。4、修建泥浆池、沉淀池：平整场地，以便钻机安装和就位，在同排桩基外侧修建泥浆池、沉淀池，每两根桩1个，容积至少满足1根桩的全部排浆量。 泥浆制备选用优质粘土（必要时采用膨润土）造浆，泥浆比重控制在1.021.06，粘度控制在1620（Pa.s），含砂率4%，胶体率控制95%，酸碱度（PH值）810，其测定用泥浆相对密度计测定，粘度用标准漏斗粘度计测定，含砂率采用含砂率计测定，PH值用PH试纸检测。试验泥浆的全部性能指标，在钻进中要定期检验并填写泥浆实验记录表。泥浆经过滤、沉淀后流回桩孔内，保证泥浆循环。出浆池
19、、沉淀池通过沟槽连通，利用泥浆泵向外排渣，桩孔上层的泥浆经事先开挖好的沟槽流入沉淀池。泥浆循环使用，废弃泥浆沉淀后运至指定的位置。注意事项：在钻进过程中当发现坍孔现象时，立即加大泥浆比重。5、钻孔机具准备:进场设备采用反循环回转钻机。按规范要求将钻机部件：动力机、卷扬机、钻架、泥浆泵、砂石泵、钻杆和水龙头等组装好，经技术人员检查后，方可使用。钻机安装在汽车上，钻机就位后，钻头尖对准十字中心，偏差不得大于5cm，再进行调平。6、成孔工艺:6.1.开钻:开钻时应先往孔内灌注泥浆，待泥浆输进钻孔中一定数量后，方可开始钻进。6.2.钻进:a.开始钻进时，进尺要适当控制，在护筒刃脚处，应低档慢速钻进，使
20、刃脚处有坚韧的泥皮护壁，钻至刃脚下1m后，可按土质以正常速度钻进。b.在粘质土中钻进，由于泥浆粘性大，钻锥所受阻力也大，易糊钻，宜选用尖底钻锥，控制进尺，慢速、大泵量、稠泥浆钻进。6.3. 泥浆补充和净化: 开钻前应调制足够数量的泥浆，钻进中如泥浆有损耗、漏失，应予补充，并按时检查泥浆指标。遇土层变化应增加检查次数，并适当调整泥浆指标。每钻进2m或地层变化处应在泥浆槽中捞取钻渣样品，查明土类并记录，以便与设计资料核对。复核人： 接受人：反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack deep of understandin
21、g, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等技术交底书反循环钻孔灌注桩技术交底书thrift of excellent traditional and
22、 style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等施工单位桩基队工程名称钻孔灌注桩交底日期编
23、制单位项目部交底人职 务桥梁工程师技术交底内容对位准确后再挖除中心土体，如地质情况较差的地方土体容易坍塌，无法保留中心桩时可先在护筒外定十字护桩，然后再挖护筒基坑。4、修建泥浆池、沉淀池：平整场地，以便钻机安装和就位，在同排桩基外侧修建泥浆池、沉淀池，每两根桩1个，容积至少满足1根桩的全部排浆量。 泥浆制备选用优质粘土（必要时采用膨润土）造浆，泥浆比重控制在1.021.06，粘度控制在1620（Pa.s），含砂率4%，胶体率控制95%，酸碱度（PH值）810，其测定用泥浆相对密度计测定，粘度用标准漏斗粘度计测定，含砂率采用含砂率计测定，PH值用PH试纸检测。试验泥浆的全部性能指标，在钻进中要定
24、期检验并填写泥浆实验记录表。泥浆经过滤、沉淀后流回桩孔内，保证泥浆循环。出浆池、沉淀池通过沟槽连通，利用泥浆泵向外排渣，桩孔上层的泥浆经事先开挖好的沟槽流入沉淀池。泥浆循环使用，废弃泥浆沉淀后运至指定的位置。注意事项：在钻进过程中当发现坍孔现象时，立即加大泥浆比重。5、钻孔机具准备:进场设备采用反循环回转钻机。按规范要求将钻机部件：动力机、卷扬机、钻架、泥浆泵、砂石泵、钻杆和水龙头等组装好，经技术人员检查后，方可使用。钻机安装在汽车上，钻机就位后，钻头尖对准十字中心，偏差不得大于5cm，再进行调平。6、成孔工艺:6.1.开钻:开钻时应先往孔内灌注泥浆，待泥浆输进钻孔中一定数量后，方可开始钻进。
25、6.2.钻进:a.开始钻进时，进尺要适当控制，在护筒刃脚处，应低档慢速钻进，使刃脚处有坚韧的泥皮护壁，钻至刃脚下1m后，可按土质以正常速度钻进。b.在粘质土中钻进，由于泥浆粘性大，钻锥所受阻力也大，易糊钻，宜选用尖底钻锥，控制进尺，慢速、大泵量、稠泥浆钻进。6.3. 泥浆补充和净化: 开钻前应调制足够数量的泥浆，钻进中如泥浆有损耗、漏失，应予补充，并按时检查泥浆指标。遇土层变化应增加检查次数，并适复核人： 接受人：反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack deep of understanding, one-side
26、d think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等技术交底书反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack
27、 deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等施工单位桩基队工程名称钻孔灌注桩交底日期编制单位项目部交底人职
28、务桥梁工程师技术交底内容脚处有坚韧的泥皮护壁，钻至刃脚下1m后，可按土质以正常速度钻进。b.在粘质土中钻进，由于泥浆粘性大，钻锥所受阻力也大，易糊钻，宜选用尖底钻锥，控制进尺，慢速、大泵量、稠泥浆钻进。6.3. 泥浆补充和净化: 开钻前应调制足够数量的泥浆，钻进中如泥浆有损耗、漏失，应予补充，并按时检查泥浆指标。遇土层变化应增加检查次数，并适当调整泥浆指标。每钻进2m或地层变化处应在泥浆槽中捞取钻渣样品，查明土类并记录，以便与设计资料核对。7、 劳动组织：每台班一般安排34人，其中班长兼指挥，记录1人，电工1人，司机1人，卷扬机司机1人，装卸钻杆及清渣23人。8.钻孔中事故的预防及处理:8.1
29、.坍孔坍孔的表征是孔内水位突然下降，孔口冒细密的气泡，出渣量显著增加而不见进尺，钻机负荷显著增加等。坍孔原因：1）泥浆比重不够及其它泥浆性能指标不符合要求，使孔壁未形成坚实泥皮；2）护筒埋置太浅，下端孔口漏水，坍塌或孔口附近地面受水浸湿泡软，或钻机装置安在护筒上，由于振动使孔口坍塌，扩展成较大坍孔；3）在松软砂层中钻进，进尺太快；4）水头太高，使孔壁渗浆或护筒形成反穿空；5）清孔后泥浆比重、粘度等指标降低；泥浆吸走后未及时补水，使孔内水位低于地下水位；清孔操作不当，供水管直接冲刷孔壁；清孔时间过长或清孔后停顿过久；6）吊入钢筋骨架时碰撞孔壁。复核人： 接受人：反循环钻孔灌注桩技术交底书thri
30、ft of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派
31、知却刻淬驻聋扯蚁肃等技术交底书反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬
32、松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等施工单位桩基队工程名称钻孔灌注桩交底日期编制单位项目部交底人职 务桥梁工程师技术交底内容坍孔的预防和处理：1）在松散粉砂土或流砂中钻进时，应控制进尺速度，选用较大比重、粘度、胶体率的泥浆；2）发生孔口坍塌时，可立即拆除护筒并回填钻孔，重新埋设护筒再钻；3）发生孔内坍塌，判明坍塌位置，回填粘土到坍孔处以上12米,如坍孔严重时应全部回填，待回填物沉积密实后再行钻进；4）清孔时应指定专人补浆，保证钻孔内必要的水头高度。供水管不要直接插入钻孔中，应通过水槽或水池使水减速后流入钻孔中，可免冲刷孔壁。扶正吸泥机，防止触动孔
33、壁。不宜使用过大的风压，不宜超过1.51.6倍孔中水柱压力；5）吊入钢筋骨架时应对准钻孔中心竖直插入；8.2.钻孔偏斜偏斜原因：1）钻杆弯曲，接头不正；2）钻机底座未安置水平或产生不均匀沉陷。预防和处理：1）安装钻机时要使转盘底座水平，起重滑轮缘、固定钻杆的卡孔和护筒中心三者应在一条竖直线上，并经常检查校正；2）由于主动钻杆较长，转动时上部摆动过大，必须在钻架上增设导向架，控制钻杆上的提引水龙头，使其沿导向架对中钻进；3）钻杆接头应逐个检查，及时调正，对主动钻杆弯曲时，要用千斤顶及时调直。8.3.掉钻落物掉钻落物原因：复核人： 接受人：反循环钻孔灌注桩技术交底书thrift of excell
34、ent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等技术
35、交底书反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐
36、栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等施工单位桩基队工程名称钻孔灌注桩交底日期编制单位项目部交底人职 务桥梁工程师技术交底内容1）卡钻时强扭、操作不当使钻杆超负荷断裂；2）钻杆接头不良或滑丝；3）电动机接线错误，钻机反向旋转，钻杆松脱；4）转向环、转向套等焊接处断开；5）操作不慎，掉入扳手、撬棍等物。预防和处理1）开钻前应清除孔内落物，零星铁件可用电磁铁吸取，较大落物和钻具，可用冲抓锥打捞，然后在护筒口加盖；2）经常检查钻具、钻杆和联接装置；3）掉钻后应及时摸清情况，若钻锥被沉淀物或坍孔土石埋住应先清孔，使打捞工具能接触钻锥。打捞工具有以下几种：打捞叉、打捞钩、打捞活套、
37、偏钩或钻锥平钩、打捞钳等。8.4.糊钻在软塑粘土层钻进时，因进尺快、钻渣量大、出浆口堵塞而造成糊钻。预防处理可选用刮板小、出浆口大的钻锥。若已严重糊钻，应将钻锥提出钻孔口，清除钻锥残渣，降低泥浆稠度。8.5.扩孔和缩孔扩孔是孔壁坍塌而造成的结果，若仅孔内局部发生坍塌而扩孔，钻孔仍能达到设计深度则不必处理，只是砼数量增加而已。若因扩孔后继续坍塌影响钻进，应按坍孔事故处理。缩孔原因有两种：一种是钻锥补焊不及时，严重磨损的钻锥往往钻出比设计桩径小的孔。另一种是由于地层中有软塑土，遇水后膨胀使孔径缩小。各种钻孔方法均可能发生缩孔，可采用上下反复扫孔的方法以扩大孔径。8.6钻杆折断一旦发生折杆，钻机的负
38、荷立即减轻，驱动机械的运转噪声减小，钻进速度复核人： 接受人：反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史
39、空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等技术交底书反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly impro
40、ve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等施工单位桩基队工程名称钻孔灌注桩交底日期2008.12.12编制单位项目部交底人职 务桥梁工程师技术交底内容接近于零，即使提钻后再钻进仍无效，则证明确系发生了折杆故障。8.6.1.折断原因：1）用水文地质或地质钻探小孔径钻孔的钻杆来作桥梁大孔径钻孔桩用，其强度、刚度太小，容易折断；2）进中选用的转速不当，使钻杆所受的扭转或弯曲等应力增大因而折断；3）钻杆使用过久，连接处有损伤或接头磨损过甚；4）地质坚硬，进尺太快，使
41、钻杆超负荷工作；5）孔中出现异物，突然增加阻力而没有及时停钻。8.6.2.预防和处理：1）选择合适的钻杆；2）不使用弯曲严重的钻杆，要求各节钻杆的连接和钻杆与钻头的连接丝扣完好，以螺套连接的钻杆接头要防止反转松脱的固锁设施；3）钻进过程中应控制进尺速度。遇到坚硬、复杂的地质，应认真仔细操作；4）钻进过程中要经常检查钻具各部分的磨损情况和接头强度是否足够，不合要求者，及时更换；5）在钻进中若遇异物，须经处理后再钻进；6）如已发生钻杆折断事故，应将掉落钻杆打捞上来，并检查原因，换用新或大钻杆继续钻进。9、清孔清孔的目的是抽、换孔内泥浆，清除钻渣和沉淀层，尽量减少孔底沉淀厚度，防止桩底存留过厚沉淀土
42、而降低桩的承载力；其次，清孔还为灌注水下砼创造良好条件，使测深正确，灌注顺利。终孔检查后，应迅速清孔，不得停歇过久，使泥浆、钻渣沉淀增多，造成清孔工作的困难甚至坍孔。清孔后应在最短时间内灌注砼。复核人： 接受人：反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major prog
43、ress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等技术交底书反循环钻孔灌注桩技术交底书thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast develop
44、ment, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等施工单位桩基队工程名称钻孔灌注桩交底日期编制单位项目部交底人职 务桥梁工程师技术交底内容本工程可采用抽浆法清孔和换浆法清孔。灌注砼前，孔底沉淀土厚度不得大于30cm。清孔后的泥浆指标应控制在如下范围：相对密度 1.021.06;粘度 1620s；含砂率4% ；胶体率95
45、% 。钢筋笼制作及吊装钢筋笼在钢筋加工场集中制作，考虑到现场运输条件钢筋笼分两段加工，运到现场后焊接为整体（注意钢筋接头错开量满足设计要求），然后用25T吊车吊装入孔。钢筋笼下端整齐，用加强箍筋全部封住不露头，使混凝土导管(或吸泥管)能顺利升降，防止与钢筋笼卡挂。为了防止钢筋笼吊装就位时发生变形，纵向主筋和加强箍筋点焊牢固，其他箍筋适当点焊，并绑扎牢固。钢筋笼采用双面焊连接。钢筋骨架的制作和吊放允许偏差为：主筋间距10mm，箍筋间距20mm，骨架外径10mm，骨架保护层厚度20mm，骨架中心平面位置20mm；骨架顶端高程20mm，骨架底端高程50mm钢筋调直和清除污锈应符合下列要求：a钢筋的表
46、面应洁净，使用前应将表面油渍、漆皮、鳞锈等清除干净。b钢筋应平直，无局部弯折，成盘的钢筋和弯曲的钢筋均应调直。c采用冷拉方法调直钢筋时，I级钢筋的冷拉率不宜大于2；HRB335、HRB400牌号钢筋的冷拉率不宜大于1。1)轴心受拉和小偏心受力杆件中的钢筋接头，不宜绑接。受力钢筋焊接应设置在内力较小处，并错开布置。在接头长度区段内，同一根钢筋不得有两个接头，配置在接头长度区段（35d，但不小于500mm）内的受力钢筋，其接头截面面积占总截面面积在受拉区不大于50%。焊接接头与钢筋弯曲处的距离不应小于10d，也不宜位于构件的最大弯矩处。复核人： 接受人：反循环钻孔灌注桩技术交底书thrift of
47、 excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career 纵岿澈毕栖史空垃尸荒早沉株意遁匝杨动烷募缩淬松前倔侗拎锤钎谆览进摊恐栏况取挞膳室枫郊苗舶迢柒洗恿撇仔保潍酶派知却刻淬驻聋扯蚁肃等技术交