【正文】
ng circular saw380V、1臺(tái)1 set模板制作Formwork fabrication鋼筋斷鋼機(jī)Steel bar cutting machine380V、1臺(tái)1 set鋼筋加工Steel bar process鋼筋切割機(jī)Steel bar cutter380V、1臺(tái)1 set鋼筋加工Steel bar process鋼筋彎箍機(jī)Steel bar bender380V、1臺(tái)1 set鋼筋加工Steel bar process電焊機(jī)Electric welding machine380V、1臺(tái)1 set鋼筋加工Steel bar process木工手提圓盤(pán)鋸Woodworking portable circular saw8臺(tái)8nos.模板加工Formwork process主要儀器設(shè)備4. Main Instruments and Equipment預(yù)應(yīng)力錨桿施工配備的主要儀器如表2所示Instruments List for anchor construction are shown in figure2 below表2 主要測(cè)量、試驗(yàn)、質(zhì)檢、監(jiān)測(cè)儀器設(shè)備表Main Instruments for Measurement, Test, Quality Inspection and Monitoring List序號(hào)NO.設(shè)備名稱Instrument Name廠牌及規(guī)格型號(hào)Brand, Specification and Model數(shù)量Qty備注Note1全站儀Total StationSET230RK、NTS302R+1錨孔定位Anchor hole positioning2水準(zhǔn)儀Water LevelC32II、DSZ21350m鋼尺Steel Tape(50m)34磨光機(jī)Polishing Machine25試樣切割機(jī)Sample Cutting Machine16砂漿稠度儀Mortar Consistometer17電動(dòng)重型擊實(shí)儀Electric Heavy Compaction Apparatus電 動(dòng)electric type18其它儀器Other Instrument根據(jù)需要配置Prepared as per needs第三節(jié) 錨桿主要施工方法 III. Main Construction Method of Anchor (1) 、總體方案 Scheme錨桿施工與邊坡開(kāi)挖施工同步進(jìn)行,上層邊坡支護(hù)施工完成,開(kāi)挖至預(yù)應(yīng)力錨桿施工位置后,及時(shí)組織進(jìn)行腰梁及預(yù)應(yīng)力錨桿施工,完成邊坡防護(hù),減少邊坡暴露時(shí)間。The anchor construction shall be performed simultaneously with the slope excavation. After the pletion of supporting construction of upper slope, excavating to the construction location of prestressed anchor, then carrying out the construction of intermediate beam and prestressed anchor and finishing supporting work for slope in order to reduce exposure time of slope. 1) 、準(zhǔn)備工作:機(jī)具配備質(zhì)量和數(shù)量,人員配置數(shù)量和結(jié)構(gòu)等必須與預(yù)應(yīng)力錨桿施工相適應(yīng),滿足施工需要;完成原材料進(jìn)場(chǎng)及試驗(yàn)檢測(cè);完成施工技術(shù)方案、開(kāi)工報(bào)告等技術(shù)資料的編寫(xiě)、上報(bào)和審批,技術(shù)交底資料的下發(fā)學(xué)習(xí),原材料送檢、報(bào)批手續(xù)及資料收集。 1).Preparation Work: The quality and quantity of equipment preparation together with the quantity and structure of human resource arrangement must be patible with the construction of prestressed anchor to meet the construction needs。 Completing the approach and test of raw materials 。Completing the preparation, submitting and approval of related technical documents including construction program and construction starting report, etc。 Issuing technical information to staff for study。 Conducting raw materials inspection, approval procedures and data collection.2) 、錨桿施工順序:錨桿施工按從上到下(可根據(jù)現(xiàn)場(chǎng)情況適當(dāng)調(diào)整)分序加密的原則進(jìn)行施工。錨桿施工平面布置詳見(jiàn)附圖(一)(以從上至下為例)所示,然后及時(shí)進(jìn)行后續(xù)各工序的施工。 2).Construction Sequence of Anchor: The anchor construction shall be conducted from the top to the bottom(some proper adjustment can be made according to the actual situation) under the principle of sequence and denseness. Grout leaking between anchor holes shall be avoided in order to prevent the serious impact on construction effect. See Attachment 1 for detailed Plan of Anchor Arrangement(take the construction order from the top to the bottom as example). The following various construction work shall be carried out timely.(2) 、施工準(zhǔn)備2. Construction Preparation、錨桿的簡(jiǎn)述 Brief Introduction of Anchor、錨桿長(zhǎng)度:~,錨桿錨固長(zhǎng)度5~8m,。. Length of anchor: its length shall be ~ and the anchorage length shall be 5~ depth that the anchor hacked into the original concrete foundation shall be not less than 1m. 、錨桿入射角度:25度 Injection Degree:25 degree、錨桿直徑:150mm Diameter of anchor:150mm、錨桿:采用鋼絞線162。 執(zhí)行標(biāo)準(zhǔn)GB/T 52242014,錨桿規(guī)格采用絞線3162。、絞線2162。;沿錨桿長(zhǎng)度每隔2000mm,采用Φ48*; Anchor: The steel strand with the specification and model of 162。 shall be selected in line with the operative norm of GB/T specification of anchor has two types including 3162。 and 2162。. The steel pipe with Φ48* shall be used to make positioning isolation stent along the length of anchor every@2000mm.、錨具:錨具(M172,2孔)≥設(shè)計(jì)值340KN,與鋼絞線2162。,錨具(M173,3孔)≥設(shè)計(jì)值380KN,與鋼絞線3162。, 執(zhí)行規(guī)范GB500862015。 Anchorage: The designed strength of M172 anchorage with 2 holes shall be equal or more than 340KN which match with that steel strand with 2162。 The designed strength of M173 anchorage with 3 holes shall be equal or more than 380KN which match with that steel strand with 3162。. Two types anchorages shall conform to the operative norm of GB500862015.、錨板:錨板尺寸300*300*25(mm),錨板中間圓孔尺寸根據(jù)錨具圓孔確定(錨具3孔),墊板的圓孔外徑等于錨具圓孔外邊距;錨板尺寸300*300*25(mm),錨板中間圓孔尺寸根據(jù)錨具圓孔確定(錨具2孔),墊板的圓孔外徑等于錨具圓孔外邊距。執(zhí)行規(guī)范GB500862015 Anchor plate: The size of anchor plate shall be 300*300*25(mm). The size of round hole located at the center of anchor plate shall be determined according to the round hole of anchorage(with 3 holes). The external diameter of round hole for inserted plate shall be equal to dimension of the margin of anchorage. The size of anchor plate shall be 300*300*25(mm). The size of round hole located at the center of anchor plate shall be determined according to the round hole of anchorage(with 2 holes). The external diameter of round hole for inserted plate shall be equal to dimension of the margin of anchorage. The standard of GB500862015shall be plied with. 、錨桿抗拔:待腰梁施工完畢立即進(jìn)行養(yǎng)護(hù),且腰梁、錨桿混凝土強(qiáng)度達(dá)到80%后才能進(jìn)行錨桿抗拔實(shí)驗(yàn)檢測(cè); Tensile testing of anchor: The curing work shall be carried out at once after the pletion of intermediate beam construction and the tensile testing of anchor could be conducted after the concrete strength of intermediate beam as well as anchor up to 80%.錨桿檢測(cè)實(shí)驗(yàn)按下列規(guī)范進(jìn)行:The anchor test shall be performed conforming to the following standards:(3) 、錨桿成孔工藝3. Boreforming Process of Anchor錨桿施工工藝流程圖:Anchoring Construction Process Flow Chart、技術(shù)參數(shù): Technical Parameters:在土方開(kāi)挖或回填施工的同時(shí),留設(shè)錨桿工作面(錨位以下500mm)。預(yù)應(yīng)力錨桿采用風(fēng)動(dòng)潛孔錘施工工藝,錨桿長(zhǎng)度15~20m,錨桿錨固長(zhǎng)度約58m。Reserve anchor working area(500mm below anchoring point) while excavating or backfilling of earthwork. Airdriven downhole hammer construction technology shall be adopted for prestressed anchor whose length is 1520m and anchorage length is about 58m.、風(fēng)動(dòng)潛孔錘施工方法 . Airdriven Downhole Hammer Construction Method 、根據(jù)設(shè)計(jì)圖紙要求,測(cè)量人員測(cè)定錨桿孔的孔位,打入標(biāo)樁,注明