【正文】 construction process, construction personnel should strictly in accordance with the requirements of the construction plan, strictly follow relevant regulations and standards of construction, construction technology, operating rules requirements。 before construction, project technical personnel shall earnestly drawings came, pile the corresponding construction scheme, the working group on the detailed construction technical disclosure. For project content, nature, quality requirements, specifications, standards, on schedule, time limit for a project, materials purchase, try to be familiar with the site environment, such as roads, should ，項目技術人員應認真做好圖紙資料會審，編制相應的施工方案，對施工班組進行詳細的施工技術交底。in strict accordance with the current national relevant specification and the acceptance standard of 。 Pile hole: to play good pile hole should be timely backfill, out of the clay in order to avoid unnecessary security accidents. 送樁孔：對已打好的樁孔應及時用土回填，以免發(fā)生不必要的安全事故。若壓力表數(shù)值變化明顯，應及時與建設單位及監(jiān)理單位聯(lián)系協(xié)商解決。nodeHighplanelowerl Allowable tolerance for pile extension接樁允許偏差 Table表4Inspection item檢查項目Allowable tolerance允許偏差或允許值Inspection method檢查方法Pileextestion接樁Welding quality焊縫質量No air holes, weld beading, cracks無氣孔、無焊瘤、無裂縫Visual直觀Downtime after electrowelding ends電焊結束后停歇時間＞ minStopwatch秒表測定Upper焊縫必須每層檢查，焊縫不宜有夾渣、氣孔等缺陷，滿足《鋼結構工程施工質量驗收規(guī)范》GB502052002焊縫的要求。l should be confirmed before welding pipe joint is qualified, end plate whether level off, the qualified end plate groove on the floating rust and dirt should be ，端板是否合格平整，端板坡口上的浮銹及污物應清洗干凈。接樁采用電焊。Record: piling works the pany assign personnel records: the pressure gauge reading, pressure, pile top elevation and plane deviation of original records, and detailed records on the spot, fill in the correct, timely, can truthfully report the situation to them and to ensure that the data synchronization with the ：打樁工程本公司派專人記錄：壓力表讀數(shù)，壓力，樁頂標高及平面偏差等原始記錄，并詳細地當場記錄，填寫正確、及時，能如實反映情況，確保資料與現(xiàn)場同步進行。樁身發(fā)生突然傾斜或嚴重回彈；l pile top and pile body appear serious cracks or broken。l pressure numerical changes obviously。 Pile zone set up good axis control points and leveling points to protect good, and by the surveyor check not less than once a day, check check before pile driving, to control the pile top ，并且由測量員每天不少于一次復查，打樁前要檢查復核，用以控制樁頂標高。 By using static pressure pile, pile cap and pile body should be on the same vertical line, eccentric static pressure shall be strictly ，樁帽與樁身應在同一垂直線上，嚴禁偏心靜壓。%。 Using pile machine and auxiliary lifting crane feed in place, after pletion of pile in the pile, with two theodolite into 90 176。（3）Pile driving construction :the main technical measures:沉樁施工主要技術措施：Under the pile location if there are any obstacles, should be removed, if necessary is needed for pile penetration, to ensure that the ，應進行清除，如有必要尚需進行樁位觸探，確保沉樁順利。 D. pipe pile on two fulcrum for transport, storage, protection position should be from both ends for pile length (L) 、堆放為二個支點時， L處（L為管樁長度）。（2） Pile storage requirements堆樁要求： A. pipe pile should drop spike light when lifting, beware of collisions, hook hook can be in on both ends of the pipe pile end plate steel place, sling and pile body axis Angle greater than 60 ，嚴防碰撞，可將吊鉤鉤于管樁兩端鋼端板處，吊索與樁身軸線夾角大于60度角。Pile top elevation with calibration level observation on pile follower lever of stop line to control, parallel to the point of setting the level in the pile, as a ，并聯(lián)到設置樁區(qū)內的水準點，作為測量標準。往返測讀應滿足允許閉合差要求。Between pile according to the pile axis release samples, sample size, must one by one check, check, properly ，樣樁之間尺寸，必須逐根檢查、校核，妥善保護。In the construction pile driving regional axis control points should be far away from the roads (not less than one times the pile length), by the surveyor on axis control points and anchor point every day not less than 1 times the （不少于壹倍樁長），由測量員每天對軸線控制點和定位點進行不少于1次的復核。Surveying control測量的控制Pile driving engineering in the process of localization of payoff and elevation control, with the following measures to ，用以下措施來控制。QC criteria of prefabricated piles預制管樁的質量控制標準 Table3 表3Item檢查項目Tolerance or allowable允許偏差或允許值Inspection method檢查方法Finished product成品樁質量Outlook外觀無蜂窩、露筋、裂縫、色感均勻樁頂處無孔隙Visual直觀Side length邊長177。Pile area should be clearly without water, the lower part of the ground should be set up open trench and blind ditch ，地勢較低處應設明溝及盲溝排水。Water low areas in addition to the drainage, laying crushed stone or construction ，鋪設碎石或建筑垃圾。如需回填土應派專人負責監(jiān)護，嚴禁混入大石塊或障礙物，確保打樁樁位的精度。四、Construction technology of PHC pile PHC管樁的施工技術Site formation and preparation施工場地平整和施工前準備：Planned area of space and underground obstacles and underground pipeline should find out and eliminate, there are filled soil region, such as site application of powder line marked boundaries. To ensure the safety of the pile machine endurance requirements. For backfill should hold people accountable for monitoring, it is strictly prohibited to interfuse boulders or obstacles, to ensure the accuracy of pile position. Before pile driving equipment es into play, scope of backfill soil with lime powder marked boundaries warning ，如場地有填土區(qū)域，應用白粉線標明界限。l Inspect the outlook and documents of piles根據(jù)隨車材料單，檢驗管樁的外觀質量及質量文件。Pile inspection requirements管樁驗收資料要求：l Material Certificate and material test report原材料質量合格證和材料復試證明。Requirements進樁要求：Pile driving unit materials and plant materials, both sides must be opened according to the driving unit into a pile of schedules, strictly implement for pile and ensure timely supply of pipe pile. Construction personnel to engage in serious appearance to approach the pile quality check and inspection of quality information, nonconforming product shall be determined to ，雙方必須按打樁單位開出的進樁計劃表，嚴格執(zhí)行供樁，保證管樁的及時供應。Pile of lifting, transport and storage requirements to meet the technical specification for the building pile foundation JGJ942008 and the prestressed concrete pipe pile atlas of the 10 g409 reg