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鋼支撐、混凝土支撐拆除專項(xiàng)施工方案(完整版)

  

【正文】 外事故發(fā)生,(每一項(xiàng))切割工作完成之后再按統(tǒng)一安排吊裝砼塊,以確保施工安全。 ( 3)安裝繩索 根據(jù)已確定的切割形式將金剛石繩索 穿過穿繩孔,并 按一定的順序纏繞在主動(dòng)輪及輔助輪上 ,注意繩子的方向應(yīng)和主動(dòng)輪驅(qū)動(dòng)方向一致 。 ( 7)切割過程中應(yīng)注意的問題 砼支撐拆除施工必須遵循“先拆連梁、后拆主支撐、最后拆除腰梁”的施工順序,使支撐應(yīng)力逐步得到釋放,避免先拆主支撐導(dǎo)致應(yīng)力突變 而 發(fā)生基坑支護(hù)失穩(wěn)的事故。 鋼絲繩 穿過吊裝孔后用 吊環(huán) 連接牢固。 拆除過程中加強(qiáng)圍護(hù)樁 各項(xiàng)監(jiān)測(cè),根據(jù)監(jiān)測(cè)情況調(diào)整拆除長(zhǎng)度。采用千斤頂支頂并適當(dāng)加力頂緊,然后切開活絡(luò)頭鋼管、補(bǔ)焊板的焊縫,千斤頂逐步卸力,停置一段時(shí)間后繼續(xù)卸力,直至結(jié)束。 施工順序如下: 劃定需拆除的防汛墻 → 機(jī)械進(jìn)場(chǎng)、就位→ 鑿上半 段 防汛墻保護(hù)層 → 剝出主鋼筋 → 割斷主鋼筋 → 鑿除上半段防汛墻→ 鑿下半 段 防汛墻保護(hù) 層 → 剝出主鋼筋 →割斷主鋼筋 → 鑿除下半段防汛墻 → 碎渣清理、裝車清運(yùn)。 混凝土支撐 護(hù)岸 基坑 混凝土支撐 吊裝重量 ≤ 10T,工作半徑 20 米。 [Fg]鋼索允許拉力; Fg鋼索破斷拉力總和(查表 143為 ); a換算系數(shù)( 查 表 144為 ) ; K鋼絲繩的安全系數(shù) (表 145 為 6) 。 ( 2) 繩割機(jī)、千斤頂?shù)葘I(yè)設(shè)備均應(yīng)檢驗(yàn)合格后方可進(jìn)場(chǎng)施工。 組長(zhǎng): 陸金倫 副組長(zhǎng): 陳海濤 、 羅錦雄 成 員: 晏迎秋 、 陳春 明、 莊智 、 張鈞盛 、呂曉強(qiáng) ( 2) 施工人員進(jìn)行《安全施工管理?xiàng)l例》教育,樹立安全第一的思想,對(duì)特種作業(yè)人員進(jìn)行專業(yè)培訓(xùn)。 ( 8) 切割焊和吊運(yùn)過程中工作區(qū)嚴(yán)禁過人,拆除的零部件嚴(yán)禁隨意拋 落,避免傷人。安裝電氣設(shè)備,進(jìn)行切割作業(yè)等,由合格的專業(yè)技術(shù)人員操作。監(jiān)測(cè)內(nèi)容 主要 包括: 基坑頂面沉降和位移監(jiān)測(cè) ; 圍護(hù)結(jié)構(gòu) 的側(cè)斜及水平位移監(jiān)測(cè) ; 支撐軸力監(jiān)測(cè) ; 中立柱 鋼管 沉降 、傾斜 監(jiān)測(cè) 。t always take everything back to things, and don39。 life happy and worry, all is you of life attitude, optimistic, good luck。 no matter how many grievances, how unfortable, and ultimately to heal themselves or their own, others may got you to fort, but never know your heart is how wanjianchuanxin. 12, ma39。 to be alive, you will have trouble. Life is the most afraid of what all want to care about, but also what all grasp is not firm, without scenery, separated populations, such as not to desire, all docked in the fate of the end. Why is too rigid, the natural, to go stay not to live, let go of obsession, revel is 20, if the fate of the broken Hopes of sailing, please don39。 difficult to myself to move away the heart of stone head. Leave time to spend with her, often reflect my heart, so as to remove your heart of stone. 24, everything does not have to be demanding, e to, everything does not have to care about, over the past。t demand, do to。t helpless, because they are still alive, is still a dream, the sun still, we still. Lost, keep memories。 and an exception is better to give than to what 13, don39。 heart tired, calm. Grow up, mature, this society read. Tired and sad, squat down, to their a hug. Because the world no one can sympathize with you, have mercy on you. You cry, tears is your own。t want to face, don39。佛山市汾江路南延線 (瀾石路至裕和路段 )沉管隧道干塢及護(hù)岸工程 (北岸部分 ) 支撐拆除專項(xiàng)施工方案 17 (英文版 ) easily blame, to prevent the broken window effect. Supervise the leading cadres to play an exemplary role, take the lead in the strict implementation of the code and rule , lead to safeguard the solemnity and authority of the party discipline, ensure that the party discipline and the laws and regulations for implementation in place. Throughout the discipline in the daily supervision and management , strengthen supervision and inspection, from the thorough investigation of violations of discipline behavior. Strengthen to key areas, key departments and key projects as well as the masses reflect the concentration of the units and departments for supervision. strengthening supervision, discipline inspection and supervision of cadres to set an example for pliance with the code and rule is a man must be hexyl, blacksmith needs its own hardware. Discipline inspection ans as the executor of the party discipline, and supervisor of the defenders, for its supervision must be more strictly, discipline inspection and supervision of cadres to firmly establish the awareness of Party Constitution, sense of discipline and rules consciousness, politics loyalty, sense obey. Action speak Ji Ordinance to set an example of the 佛山市汾江路南延線 (瀾石路至裕和路段 )沉管隧道干塢及護(hù)岸工程 (北岸部分 ) 支撐拆除專項(xiàng)施工方案 18 regulations of the rule of law, strengthen supervision and accept the supervision of the firmness and consciousness, do ply with and . To firmly establish the discipline must first be disciplined, the supervisor will be subject to the supervision of concept, and consciously safeguard and implement party passes party, take the lead in practicing three strict real strict, so loyal, clean, play. To be good at learning, the Constitution and the code as morality, politics and brought to fruition。 十 、 文明施工措施 ( 1)支撐 拆除 過程中, 材料存放在指定地點(diǎn),分類碼放整齊,堆碼高度不超過 ,有防雨措施。 佛山市汾江路南延線 (瀾石路至裕和路段 )沉管隧道干塢及護(hù)岸工程 (北岸部分 ) 支撐拆除專項(xiàng)施工方案 16 ( 10) 高處作業(yè)要系好安全帶,安全帶另一頭必須扣牢在固定物上。 ( 3) 吊裝作業(yè)時(shí),起吊位置應(yīng)合理、嚴(yán)禁超重或超距離起吊,安排責(zé)任心強(qiáng)、熟練的起重工進(jìn)行操作,并持證上崗。 ( 4) 電焊切割工 、 起重機(jī)械操作等 人員必須持證上崗。 七 、工期及資源配置 根據(jù)專業(yè)施工隊(duì)伍 以往 的施工經(jīng)驗(yàn),結(jié)合護(hù)岸基坑實(shí)際工程量, 拆砼支撐的施工工期 : 15 天 /層 ;回填砂工期約為: 5 天 /層。 起重設(shè)備安全驗(yàn)算 起重機(jī) 見下表: 120T 汽車起重機(jī)性能表 工作半徑 (m) 主 臂 長(zhǎng) 度 (m) 3 120 111 107 102 92 4 95 94 88 81 69 86 82 75 66 5 79 76 70 62 51 6 66 66 62 55 49 40 7 56 56 55 49 38 32 8 48 47 44 40 32 9 42 40 10 37 12 28 14 15 16 19 18 15 20 佛山市汾江路南延線 (瀾石路至裕和路段 )沉管隧道干塢及護(hù)岸工程 (北岸部分 ) 支撐拆除專項(xiàng)施工方案 13 22 24 10 26 9 8 28 8 8 30 7 32 6 6 34 36 38 4 40 4 42 44 46 48 2 2 50 52 54 a) 查表工作半徑 22 米、臂長(zhǎng) 米一欄,起重能力 , 大于 鋼支撐 需起吊 最大 重量 , 安全 。施工時(shí),可從被拆段防汛墻的兩邊開始鑿除,逐漸向中間匯合。主吊鋼絲繩對(duì)稱掛在支撐吊環(huán)上,輔吊鋼絲繩掛在支撐的一端以邊調(diào)節(jié)方向。 動(dòng)端 的拆除 搭設(shè)腳手架支托鋼支撐→輔吊配合主吊固定鋼支撐→把千斤頂放到原支撐點(diǎn)→用千斤頂支頂 鋼支撐→焊斷鋼支撐與活 動(dòng)端 的預(yù)應(yīng)力固定焊板→千斤頂逐步回油卸力→移走千斤頂→鋼支撐和活 動(dòng)端 連接牢固→鋼支撐平移→主吊卷筒制動(dòng)、起吊鋼支撐→輔吊調(diào)整鋼支撐方向,避讓上部鋼支撐焊斷→吊至地面→循環(huán)使用。吊裝過程要?jiǎng)蛩偕仙?,并設(shè)專人進(jìn)行指揮以避讓上部支撐。安全防護(hù)措施一定嚴(yán)格、嚴(yán)密,否則斷掉的金剛石繩索上的金剛石串珠會(huì)像子彈一樣飛出傷人。 根據(jù)現(xiàn)場(chǎng)情況 ,水、電、機(jī)械設(shè)備等相關(guān)管路的連接應(yīng)正確規(guī)范、相對(duì)集中,走線擺放嚴(yán)格執(zhí)行安全操作規(guī)
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