【正文】 are usually among the earliest symptoms to develop. The most mon social impairment is a kind of indifference to other people, or aloofness, even towards parents and close caregivers. The baby may fail to respond to his or her name being called and may show very little facial expression unless extremely angry, upset, or happy. Babies with autism may resist being touched, and appear to be lost in their own world, far from human interaction. Between seven and 10 months of age, most infants often resist being separated from a parent or wellknown caregiver, but these infants may show no disturbance when picked up by a stranger. Other children with autism may be very passive, although less resistant to efforts by others to interact. However, they do not initiate social interaction themselves. Still others may attempt to engage with adults and peers, but in ways that strike others as inappropriate, or odd. In adolescence and adulthood, some of the higherfunctioning individuals with autistic disorders may appear overly formal and polite. They may react with little spontaneity, as if social interaction doesn39。s condition between rounds and may remend that the contest be stopped. Doctors also examine each boxer at the conclusion of fights and paramedic teams must be on hand at all boxing bills. The medical profession in several countries has increasingly adopted an antiboxing stance, citing irreversible brain damage as its major objection to the sport. This is a key point for, in absolute terms of deaths and serious injuries, other sports such as horseracing, mountaineering, rugby, and even cricket appear more dangerous, but in none of them is deliberate and repeated striking of an opponent part of the rules of the game. In contrast a boxer has a licence for physical assault. The evidence is clear that repeated pummelling to the head can cause cumulative damage to the brain: here time is no great healer. Occasionally, acute brain injury can occur during a fight. The greatest danger es towards the end when a tired man with a loose neck has his head flipped back rapidly by a punch. This can tear a vein outside or inside the brain, which then leaks 金水區(qū)杲村城中村改造項目 K4 塊地二期工程 大體積砼施工方案 23 blood, causing pressure on the brain and eventually leading to a a. Only if the clot is removed rapidly can the fighter survive. Fighters now train harder。s Rules of 1743 eradicated some of the barbarism by outlawing the hitting of a man when he was down, and the seizing of hair or the body below the waist, but they still permitted butting. Yet it was not the brutality of the prizering which brought its demise, but the corruption with which it became associated. The revival of the sport as boxing in late Victorian Britain saw several changes designed to render it more civilized. Although some of the old practices continued for a while — even the famous Queensbury Rules initially allowed endurance contests — by the turn of the century the general picture was one of boxing in gloves, limitedtime rounds, points decisions after a fixed number of rounds had elapsed, and weight divisions, though the latter have accentuated problems of dehydration as fighters struggle to ‘make the weight’. For much of the twentieth century the history of boxing has been one of crumbling resistance to changes intended to protect further the brains and bodies of participants. Between 1984 and 1993 eight boxers had died soon after fights in the UK。s hands, protected only by having been soaked in brine. With their bination of boxing and wrestling moves, early contests were literally ‘no holds barred’。 he then had half a minute39。 boxing is a human bloodsport in which the intention is to hurt one39。同時車輛在施工現(xiàn)場的行駛速度不得大于 20公里 /小時。 提高節(jié)水意識，節(jié)約用水，避免水污染。 砼運輸罐車進出現(xiàn)場要清潔干凈，避免殘留于卸料槽中的砼沿途拋撒。 九、環(huán)保措施 加強現(xiàn)場管理，降低人為噪音；選用低噪音泵車和振搗棒，特別是金水區(qū)杲村城中村改造項目 K4 塊地二期工程 大體積砼施工方案 22 夜間施工時，嚴(yán)禁將振動 棒在鋼筋或模板上拖動，發(fā)出刺耳噪音，影響附近人員的休息。 進行底板混凝土養(yǎng)護覆蓋時，因混凝土未達到規(guī)定強度，上人時人可在鋪好的腳手板上行走，盡量不踏出腳印。 考慮基坑北側(cè)寬度較窄且要行走車輛，施工中特別 是澆筑混凝土期間，砼罐車來回走動較多，每 2 小時應(yīng)進行一次位移觀測，防止邊坡位移發(fā)生意外。 操作人員要帶絕緣手套，做好入場人員的安全教育，安全考試合格后方可上崗操作，特殊工種應(yīng)持證上崗。 機械操作人員應(yīng)持證上崗，嚴(yán)格按操作規(guī)程操作，嚴(yán)禁非機械操作人員操作。 金水區(qū)杲村城中村改造項目 K4 塊地二期工程 大體積砼施工方案 21 考慮人員進出基坑施工作業(yè)，在基坑北面設(shè)置出料口。 坑邊嚴(yán)禁堆放重物或大型機械，以免影響基坑護坡的穩(wěn)定，引起塌方。 在混凝土達到 以后方可上人進行操作。 考慮后澆帶采用鋼絲網(wǎng)封設(shè)，在混凝土澆筑過程中不可避免的有部分水泥漿滲出，施工時應(yīng)派專人予以清理。對 易被污染的柱墻豎向插筋在混凝土澆筑前，用塑料薄膜將其進行遮擋保護。 混凝土澆筑 過程中 ， 應(yīng)安排 鋼筋工 看護 鋼筋，保證鋼筋在混凝土 澆筑 過程中不移位 。 砼表面質(zhì)量控制：混凝土澆搗振實后隨即 按標(biāo)高用長刮尺刮平， 再用木抹子拍壓兩遍，搓成麻面，以閉合收水裂縫，緊 接 著用塑料掃帚沿 東金水區(qū)杲村城中村改造項目 K4 塊地二期工程 大體積砼施工方案 20 西方 向掃出細(xì) 紋 面，施工時用刮杠按毛刷寬度靠線，保證一行壓一行且相互平行。砼振搗時， 應(yīng)沿坡面 自 下 而 上進行 振搗，以防漏振，振搗以砼泛出漿液 不再明顯下沉 為準(zhǔn)。 底板混凝土澆筑標(biāo)高按柱墻主筋上的標(biāo)高控制點 拉通線 抄 平 控制 ，整個底板其 標(biāo)高 與平整度 誤差 要求控制 在 3mm 之內(nèi)。 10mm， 以此來控制混凝土的攪拌質(zhì)量。 六、 混凝土施工質(zhì)量保證措施 建立有關(guān)部門的崗位責(zé)任制，明確質(zhì)量職責(zé)，責(zé)任落實到人，以便在施工過程中各司其職，各管其事，避免人浮于事的狀況，做到事事有人做，人人有事管。 雨期施工期間要加強防風(fēng)緊固措施，防止安全事故發(fā)生。 合模后如不能及時澆筑混凝土?xí)r，要在模板的適當(dāng)位置 預(yù)留排水孔，防止突然下雨模內(nèi)積水。 下雨時不宜露天澆筑混凝土，必須 做好天氣變化收聽工作 ，掌握天氣變化情況，避免突然下雨影響澆筑混凝土。同時，按與監(jiān) 理約定的結(jié)構(gòu)實體部位留結(jié)構(gòu)實體檢測試塊?？?jié)B混凝土每 500 m3 留置 1 組抗?jié)B試塊，單位工程不少于兩組抗?jié)B試塊。工長隨 時觀察混凝土有無異常，發(fā)現(xiàn)問題及時解決。測溫控制：混凝土內(nèi)外溫差不得大于 25℃；降溫速度不大于 ℃ /d；測溫安排專人金水區(qū)杲村城中村改造項目 K4 塊地二期工程 大體積砼施工方案 18 負(fù)責(zé)，并做好記錄。 （ 2）澆筑質(zhì)量控制 砼澆筑施工時，應(yīng)嚴(yán)格控制混凝土澆筑的時間間隔，防止產(chǎn)生冷縫，同時應(yīng)加強振搗確保砼密實，特別是梁柱節(jié)點處。 混凝土 質(zhì)量控制 底板混凝土澆筑過程中的質(zhì)量控制應(yīng)從兩個方面進行考慮，首先保證混凝土在澆筑運輸過程中不 產(chǎn)生 離析、分層 、 坍落度不穩(wěn)定的 現(xiàn)象 ，其次防止混凝土澆筑 過程中產(chǎn)生 冷縫 和振搗不 密實 的現(xiàn)象，最后應(yīng)做好測溫、養(yǎng)護工作 。養(yǎng)護過程中混凝土表面如需上人操作時，應(yīng)在草袋上鋪設(shè)腳手板，防止成品混凝土表面被踩踏破壞?；炷琉B(yǎng)護過程中應(yīng)特別注意加強信息管理，根據(jù)測溫結(jié)果隨時調(diào)整養(yǎng)護措施與方案，確保金水區(qū)杲村城中村改造項目 K4 塊地二期工程 大體積砼施工方案 17 混凝土養(yǎng)護措施調(diào)整與測溫工作在信息勾通上做到暢通無阻，以測溫指導(dǎo)養(yǎng)護。 混凝土養(yǎng)護 大體積混凝土的表面處理和養(yǎng)護工藝的實施是保證混凝土質(zhì)量的重要環(huán)節(jié)，尤其是摻加外加劑的混凝土更需要充分的養(yǎng)護。 考慮筏板混凝