畢業(yè)設(shè)計(jì)(論文)外文參考資料及譯文-現(xiàn)澆鋼筋混凝土箱梁的質(zhì)量控制(存儲版)
【正文】 dhesive template, templates, bent pitched plete acceptance of the invitation after the Commissioner of the next process. 3, steel processing and installation First test of reinforcing bars, meet the requirements for steel processing, welding the reinforced using doublesided welding, welding length of not less than 5d, smaller internal forces at the joint set, and staggered layout, welding joint area of not more than 50%.Based on the design drawings, will be reinforced in the next cutting plant material transported to the scene after the banding. Roof, floor, there are a large number of embedded web bellows, in order not to damage the bellows, welded bellows embedded all before, try not to weld pipe after installation, when the general location of steel bars and corrugated pipe into conflict whenMobile reinforcing bars, the appropriate and accurate positioning steel mesh installed to ensure accurate location of pipelines. Steel banding ago by surveyors retest the template location and elevation plane, which includes elevation calculated by the deflection of the hanger of the camber set, correct the rear of the steel banding. To enable accurate data protection layer, protective layer pads are not crushed, by setting plastic box pad pad construction. 4, bellows processing installation Position as shown in the drawings according to design layout bellows, and with the positioning ribs fixed, placed after the pipe must be smooth, nonchine. Length of all pipe joints 5d prevail, the use of corrugated pipe larger size socket to tighten the symmetry, and good joints wrapped with adhesive tape to prevent concrete slurry mixed with fine, when the pipeline location and conflict with nonprestressed reinforcement to takepipelinebased principles, the appropriate location of the mobile reinforcement to ensure that the correct pipe. Bellows the end of the embedded anchor plate should be perpendicular to the channel center line, and does not produce displacement during the concrete is installed, it will cover its end to prevent water or other debris to enter. Construction workers, mechanics, pipe vibrator can not crash. Before pouring concrete pipe carefully examined whether there are major holes in the pipe inspection, the joint is connected firmly, sealing, pipeline location is biased, strict check is correct, the method used air pressor ventilation pipe debris removal to ensure the smooth pipe. 5, Tongjiao Notes and health Used concrete pump concrete pumping, pouring time, first floor, after the web, and then the roof, symmetrical structure for each T, hierarchical placement, each 30cm, pouring from the front to the back end, the initial setting of the first layer of concretesublayer before the pletion of concrete placement, to ensure that no cold joints between layers, concrete vibrator vibrator in strict accordance with the role of scope, to prevent leakage pound, pound, and due to excessive vibration, when the prestressed pipeintensive, gap hours, with a smalldiameter of 30 types of plugin vibrators, vibrator in the steel must not drag on the flat, noncollision prestressed, template, reinforced。 temperature changes caused by the deflection。如縱向坡度過大，采取設(shè)置臺階方式，便于底托支墊平整。 （ 3）立桿的垂直度應(yīng)嚴(yán)格加以控制： 15m 以下架子按 1/200控制，且全高的垂直偏差應(yīng)不大于 10cm。 支架鋪設(shè)完畢后，需進(jìn)行預(yù)壓，以檢驗(yàn)支架及地基的強(qiáng)度及穩(wěn)定性，消除整個(gè)支架的塑性變形，消除地基的沉降變形，測量出支架的彈性變形。其他各點(diǎn)的預(yù)拱度以中點(diǎn)為最高值，以梁的兩端部為支架彈性變形量，按二次拋物線進(jìn)行分配。 （ 1）制作模板前首先熟悉施工圖和模板配件加工圖，核實(shí)工程結(jié)構(gòu)或構(gòu)件的各細(xì)部尺寸，復(fù)雜結(jié)構(gòu)應(yīng)通過放大樣，以便能正確配制，按批準(zhǔn)的加工圖制作的模板，經(jīng)驗(yàn)收合格后方可使用。 波紋管加工安裝 按設(shè)計(jì)圖紙所示位置布設(shè)波紋管，并用定位筋固定，安放后的管道必須平順、無折角。預(yù)應(yīng)力張拉必須在同條件養(yǎng)生試塊強(qiáng)度達(dá)到設(shè)計(jì)強(qiáng)度 100%后進(jìn)行。 平均張拉力計(jì)算式： Pp=P[1e（ uθ+kx） ]/（ kx+uθ） 理論伸長值計(jì)算式： ΔL=PpL/（ AgEg） 張拉過程中由專人負(fù)責(zé)測量每項(xiàng)數(shù)值，認(rèn)真記錄， 合理計(jì)算實(shí)際伸長值，實(shí)際伸長值除量測外，應(yīng)再加上初應(yīng)力時(shí)的推算值： ΔL0=（ AgEg） 精確計(jì)算每道鋼束的理論伸長值，仔細(xì)量測每束的實(shí)際伸長值。用空壓機(jī)吹凈管道內(nèi)積水；檢查壓漿用的材料是否齊全充足；檢查設(shè)備、工具是否配齊，性能良好；檢查支架是否牢固，安全設(shè)施是否有效?；炷两K凝后及時(shí)灑水養(yǎng)護(hù)，養(yǎng)護(hù)時(shí)間不少于 7天。 拌和好的水泥漿由拌和機(jī)倒入活塞式注漿泵內(nèi)，壓漿自箱梁的一端注入，直到從排氣孔內(nèi)溢出稠度均勻的水泥漿為止，關(guān)閉注漿管閘閥直到水泥漿凝固，注漿壓力須控制在～ ，控制在 30min～ 45min 范圍內(nèi)。6%則停止張拉，分析原因并及時(shí)采取措施。錨夾具安裝并檢查是否合格。 施工中人員、機(jī)械、振動棒不能碰撞管道。 鋼筋加工及安裝 首先將鋼筋進(jìn)行試驗(yàn)，符合要求后進(jìn)行鋼筋加工，受力鋼筋的焊接采用雙面焊接，焊接長度不少于 5d，接頭設(shè)置在內(nèi)力較小處，并錯(cuò)開布置，焊接接頭面積
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