橋梁工程概論之橋梁施工工藝.rar

橋梁工程概論之橋梁施工工藝

摘要： 一、下部結構    1.鉆孔灌注樁365JT施工工藝    ⑴先填寫書面開工申請報告，經監理工程師批準后方可開工。⑵以監理工程師簽認的導線點為基準點，用紅外線測距儀放樣。⑶準確放出樁位后埋設護筒，經監理工程師復核無誤后，用經緯儀引出樁位控制樁。⑷鉆孔擬采用回旋鉆。鉆機就位首先安裝好鉆架及起吊系統，將鉆機調平。鉆桿位置偏差不得大于2厘米，鉆進中經常檢查轉盤，如有傾斜或位移，及時調整糾正。鉆孔所用泥漿現場......

一、下部結構
    1.鉆孔灌注樁365JT施工工藝
    ⑴先填寫書面開工申請報告，經監理工程師批準后方可開工。
⑵以監理工程師簽認的導線點為基準點，用紅外線測距儀放樣。
⑶準確放出樁位后埋設護筒，經監理工程師復核無誤后，用經緯儀引出樁位控制樁。
⑷鉆孔擬采用回旋鉆。鉆機就位首先安裝好鉆架及起吊系統，將鉆機調平。鉆桿位置偏差不得大于2厘米，鉆進中經常檢查轉盤，如有傾斜或位移，及時調整糾正。鉆孔所用泥漿現場調制，儲存在泥漿池中備用。鉆進過程中要檢查孔徑和垂直度等并做好鉆孔記錄。
⑸清孔：鉆孔深度符合365JT設計要求后，迅速通知監理工程師驗孔，合格后立即進行清孔。清孔采用換漿法。
⑹安設鋼筋籠：鋼筋籠按照設計圖紙在鋼筋班集中下料現場成型，根據需要長度分成2-3節，鋼筋籠要焊接牢固，吊孔結實，主筋、箍筋位置準確。鋼筋籠標高偏差不得大于±5厘米。
⑺灌注水下砼采用拌合樓拌制，罐車運輸，并輸送至導管內。灌注前首先安裝好導管。安裝導管時應將連接螺栓對稱擰緊，防止漏氣。導管應隨安裝隨放入孔中，
Introduction to the Bridge and Bridge Construction Technology

Summary: First, the lower part of the structure 1. ⑴ bored 365JT construction technology started to fill out a written report on the application by the supervising engineer for approval before starting. ⑵ to supervising engineer to sign and acknowledge the wire point of reference points, setting out with the infrared range finder. ⑶ accurate release Pile casings after the burial, for review by the supervising engineer is correct, the use of digital control theodolite leads to pile pile. ⑷ swing drill hole to be adopted. First place drilling rig installed racks and lifting system, the rig leveling. Drill position deviation of not greater than 2 cm, into the regular checks turntable, if tilt or displacement, timely adjustment to correct. Drilling mud used in the scene ......

1, lower structure
    1. Bored pile construction technique 365JT
    ⑴ first started writing for completing the report, be approved by the supervising engineer started.
⑵ to supervising engineer to sign and acknowledge the wire point of reference points, setting out with the infrared range finder.
⑶ accurate release Pile casings after the burial, for review by the supervising engineer is correct, the use of digital control theodolite leads to pile pile.
⑷ swing drill hole to be adopted. First place drilling rig installed racks and lifting system, the rig leveling. Drill position deviation of not greater than 2 cm Drilling regular checks turntable and, if tilt or shift in time to adjust to correct. Field modulation used in drilling mud, stored in a mud pool stand. Drilling process to check the degree of aperture and vertical borehole records and do.
⑸ Chiang Khong: Drilling depth found 365JT design requirements, promptly notify the supervising engineer inspection hole, hole after passing immediately clear. Hole cleaning method used for pulp.
⑹ install reinforcement cage: steel cage in accordance with the design drawings of reinforced centralized material on-site class shape, length, divided into 2-3 sections according to need, to be welded solid steel cage, hanging hole and firm, and longitudinal bars, stirrups position is accurate. Reinforcement cage elevation deviation of not greater than ± 5 厘米.
⑺ by pouring underwater concrete mixing plant mixing, tanker transport, and delivery to the duct. Installed before the first perfusion catheter. Install conduits should be symmetric connection bolts tightened to prevent leakage. Catheter should be placed with the installation with the holes in
 

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