【正文】 The installation of the anchorage device shall be closely attached and centering with the bearing plate and jack. The jack axial line, the anchoring holes, the anchoring rods shall be in one line. No bend or deviation to the anchor heads is allowed to make sure the load is even and coaxial. Strength the load by applying a 25cm25cm2cm steel bearing plate.、在錨桿張。 Before tension, inspection must be done to ensure the bearing face of the anchor angle bracket pedestal must be smooth and even, vertical to the axial line of anchoring rods. If not, relevant rectifying works shall be done.、張拉施工前必須對張拉機具和儀器儀表進行標定和調(diào)試校準。然后用水泥凈漿注滿錨墊板及錨頭各部分空隙，最后對錨頭采用不低于C30的混凝土進行封錨，防止銹蝕。在設計張拉完成后，適時進行一次補償張拉，然后加以鎖定。 Before casting, it is requested to fix the bearing plate of the anchor pad to the steel bars of intermediate beam according to the design requirement. The axial line of anchorage device shall be in the same direction of the anchoring holes. Then to conduct the site casting, vibrating to guarantee the quality.、腰梁允許偏差和檢驗方法符合中國規(guī)范要求 The allowable deviation and testing methods of intermediate beams shall be coincide with the relevant Chinese standards. 、腰梁澆筑完成后，必須加強灑水養(yǎng)護工作，確保腰梁質(zhì)量?；炷翝沧ⅲ绕湓阱^孔周圍，鋼筋較密集，必須仔細振搗，保證質(zhì)量。 Normally, the actual consumption of grouting is more than theoretical volume. The grouting is pleted as the exhaust vent stops vent and the excessive grout is over flow from the exhaust vent mouth. If insufficient grouting or sedimentation after grouting, supplementary grouting shall be needed till the totally full of the grouting. To clean the grouting pipes, grouting guns, sleeves and make accurate, plete, clear grouting records after pleting grouting.、錨桿腰梁的施工 Construction of Intermediate Beam of Anchor腰梁采用C30混凝土現(xiàn)場整體澆注，OVM15錨具與其同時安裝澆筑固定。如一次注不滿或注漿后產(chǎn)生沉降，要補充注漿，直至注滿為止。即第一次注漿材料和注漿壓力與一般地層相同，第二次注漿為高壓劈裂注漿，待第一次注漿4～5h后，采用M25純水泥砂漿對錨固段進行劈裂注漿，～。第二次注漿再次向錨固區(qū)高壓注漿，~，注漿壓力為2～，. M25 grout of cement is used as anchor grouting material. Firstly grout from the hole bottom outwards to the anchorage section with the cementsand ratio of 1:, watercement ratio of , grouting pressure of . Secondly grout with high pressure to the anchorage section with neat cement grout of watercement ratio of , grouting pressure of , and the termination grouting pressure shall not less than .、當孔口出現(xiàn)溢漿且持續(xù)時間不低于5min后(或排氣管停止排氣),方可停止注漿，注漿完畢后待砂漿凝固收縮后，空口進行補漿。(5) The allowable deviation of anchor assembly shall coincide with the Chinese standard. After pleting the assembly, anchor hole shall be numbered corresponding to anchorage and stored in clarification on a dedicated place with anticorrosion protection as moisture proofing and rain proofing.、錨固注漿 Grouting本工程錨桿注漿采用二次壓力施工工藝。索體采用人工下錨，緩慢從孔口送入。鋼絞線不得相互纏繞并保證承載體位于孔的中部，錨桿保護層厚度不小于20mm。First, according to the design length requirements to cut steel strand, bondfree steel strand shall be bent into Ushape by a cold bending machine and fixed on the barrier,and then assembled by the design of the load to plete the entire anchor body. Note that the steel strand should not be entangled with each other and ensure that the carrier is located in the middle of the borehole.（1） 、截取鋼絞線用切割機，嚴禁使用電氣焊；(1) Use cutting machine to get steel is prohibited to use the electrical welding.（2） 、鋼絞線編制在工作平臺上進行，其下料長度為：設計長度+錨梁厚度+張拉千斤頂長度+錨具厚度+張拉操作預留量。to ensure the protective layer thickness of anchor body is not less than 2cm. Manpower shall be adopted for anchor body installation. It shall be checked seriously for anchor hole serial number before use highpressure air to blow the hole after confirmed. Slowly put the anchor body into hole,use steel tape to measure the steel strand length outside the hole and calculate the inside hole anchor length(deviation controlled within 50mm) to ensure the anchorage length. 首先按照設計要求長度切割鋼絞線，用冷彎機將無粘結(jié)鋼絞線彎曲成U型并固定在承載體上，然后按設計荷載體間距組裝完成整個錨桿體。Prestressed anchor is made up of intermediate beam, free segment, anchorage section and safety section. Adopt pressuredispersed anchor.162。鋼絞線沿錨桿體軸線方向每隔2m設置一道架線環(huán)，保證錨桿體保護層厚度不小于2cm。Control drilling speed according to geological condition. Drilling work shall be stopped in time when the obstacles or abnormal conditions occurred and take corresponding measures as soon as possible after checking. Drilling depth is 200mm greater than the designed anchor length.、錨桿采購及安裝 Anchor Purchase and Installation 預應力錨桿體由腰梁、自由段、錨固段和安全段四部分組成。遇到障礙物或異常情況應及時停鉆，待情況清楚后再鉆孔或采取相應措施。 length of drilling tool shall meet designed depth of anchor hole. Drawing back of drill shall be carried out smoothly .Checking with highpressure air blowing and no any obvious dust and water shall be found. After blowing up the dust in hole and the depth of hole is not less than designed length of anchorage, polyethylene pipe shall be pulled out and hole shall be covered by fabric or cement bags. Position, inclination and direction of anchor hole shall be rechecked at the same time. Anchor hole drilling is regarded as passed inspection when all the anchor hole construction work item is qualified. Allowable deviation of anchor hole inspection shall meet the specification requirements.、鉆孔質(zhì)量保證 Drilling Quality Assurance嚴格掌握鉆孔的方位，調(diào)正鉆桿，符合設計的水平傾角，并保證鉆桿的水平投影垂直于坑壁，經(jīng)檢查無誤后方可鉆孔。錨孔檢驗項目允許偏差符合規(guī)范要求。然后用一根聚乙烯管復核孔深，并以高壓風吹孔，待孔內(nèi)粉塵吹干凈，且孔深不少于錨桿設計長度時，拔出聚乙烯管，以織物或水泥袋塞好保護錨孔口待用。After drilling to designed depth, drilling work cannot be stopped immediately and keep drilling 12mimutes to avoid insufficient size of hole and not up to the designed hole diameter. Any dregs and water cannot be attached on hole wall and must be cleaned out of hole. After drilling, blow the rock powder and water out from hole with highpressure air (～). Except for anchorage of integrity and hard rock , the rest anchor holes cannot be washed by highpressure water. If the confined water flew from anchor hole, anchorage and grouting could be carried out after water pressure and volume reduced, and set up drainage hole in suitable place if necessary. If it is required to deal with impounded water in ancho