交底內(nèi)容：
一、 工程概況
本橋梁工程上部結(jié)構(gòu)共有56片后張法預(yù)應(yīng)力空心板梁，梁長為25米,梁高1.1米，采用C50混凝土�？招陌辶涸陬A(yù)制廠集中生產(chǎn)，再運(yùn)輸?shù)浆F(xiàn)場進(jìn)行吊裝。
二、 操作工藝、施工要求
1.模板：
外模板采用定型加工組合鋼模板，在模板外側(cè)安裝附著式振動器，以加強(qiáng)砼的振搗。內(nèi)模板采用竹膠板。待所有鋼筋、波紋管、預(yù)埋件就位后，進(jìn)行模板的支設(shè)，并用對拉螺栓調(diào)整、加固。模板加固時掛線調(diào)整,確保模板順直。
2.鋼筋及鋼絞線：
在現(xiàn)場鋼筋加工場加工制作，在底模上就地綁扎，先在臺座上用石筆或墨線劃出鋼筋及波紋管定位骨架位置。然后綁扎底板筋及骨架筋，待波紋管固定就位后再綁扎其它鋼筋。鋼筋籠底部及側(cè)面設(shè)置砼墊塊，以確保鋼筋的保護(hù)層厚度。鋼絞線的下料長度應(yīng)通過計算確定，計算時考慮孔道長度、穿心式千斤頂和錨夾具長度。鋼絞線的切斷采用切斷機(jī)或砂輪鋸。鋼絞線切割時，先在距切口30～50mm處用鐵絲綁扎。鋼絞線編束時，每隔1～1.5m綁扎一道鐵絲，絲扣向里，綁扎好的鋼絲束編號掛牌堆放。
3.波紋管：在骨架筋綁扎成型后，開始固定波紋管。波紋管按圖紙所示坐標(biāo)位置，用U型鋼筋卡固定牢固，防止砼澆注時波紋管上浮。模板就位前，檢查波紋管是否完好，以防水泥漿進(jìn)入管內(nèi)。波紋管與錨墊板、螺旋鋼筋的銜接應(yīng)處理好。               （轉(zhuǎn)下頁）
Cards on the table contents:
First, project survey
The superstructure of the bridge project after a total of 56 prestressed hollow beam, beam length of 25 m, beam 1.1 m, with C50 concrete. Hollow beam focus in the pre-plant production, and then transported to the site erection.
Second, the operation process, construction requirements
1. Template:
Outside the template and forming composite steel template used in the template attached to the exterior vibrator to enhance the vibration of concrete. Within the template using bamboo. When all the steel, corrugated pipe, embedded parts in place, to support the template set, and used bolt adjustment, reinforcement. Hold the line when the template reinforcement, and ensured the template straight.
2. Rebar and steel wire:
Steel processing in the field manufacture, mold on the bottom spot in the bandage, first pedestal with a slate pencil or ink line drawn steel bars and corrugated pipe positioning frame position. Tendons and the skeleton and then lashing bottom bar, to be fixed in place after the bellows other steel banding. Reinforced bottom and side of the cage set up concrete pads to ensure the protection of steel thickness. Cutting length of the strand should be determined by calculation, calculations take into account channel length, feed through jack and length of anchor clamps. Strand cut by saw cutting machine or a grinding wheel. Strand cutting, first cut in from the Department 30 ~ 50mm with wire banding. Strand when the series ended, every 1 ~ 1.5m lashing a wire threaded to the inside, lashing a good number listed steel beam stacking.
3. Bellows: After forming the skeleton reinforced banding, and began regular bellows. Bellows as shown by drawing coordinates, with U-bar card fixed firmly to prevent Tongjiao note when the bellows float. Template in place, check the bellows is intact, with water slurry into the tube. Bellows and the anchor plate, spiral reinforced the convergence should be addressed. (Next page)
 

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