大體積砼專項(xiàng)施工方案

1、目錄1編制依據(jù)................................................................................................................................12工程簡介；..............................................................................

2、.............................................13.施工技術(shù)準(zhǔn)備.......................................................................................................................43.1施工技術(shù)準(zhǔn)備；....................................

3、..............................................................................43.2.1材料選擇...................................................................................................................43.2.2混凝土的性能要求...

4、................................................................................................53.3施工機(jī)具準(zhǔn)備..................................................................................................................

5、....63.4現(xiàn)場準(zhǔn)備..............................................................................................................................73.5勞動(dòng)力組織.........................................................................

6、.................................................74.施工工藝................................................................................................................................84.1混凝土運(yùn)輸...........................

7、...............................................................................................84.2混凝土的泵送...................................................................................................................

8、..94.2.1混凝土的澆筑方式...................................................................................................94.2.2混凝土的澆筑要求...........................................................................................

9、........95混凝土測溫.........................................................................................................................115.1測溫點(diǎn)目的..........................................................................

10、..............................................115.2測溫點(diǎn)布置........................................................................................................................115.3應(yīng)急措施...................................

11、.........................................................................................125.4溫控指標(biāo)與測溫頻率........................................................................................................126混凝土養(yǎng)護(hù).....

12、....................................................................................................................127大體積混凝土裂縫控制技術(shù)措施................................................................................137.1控制

13、內(nèi)約束溫度裂縫的措施...........................................................................................137.2控制外約束溫度裂縫的措施...........................................................................................138.質(zhì)量保證措施.

14、...................................................................................................................149.成品保護(hù).................................................................................................

15、.............................1410混凝土安全施工措施....................................................................................................1511大體積砼體溫度收縮應(yīng)力計(jì)算.............................................................

16、.....................1611.1砼澆筑塊體的溫度.........................................................................................................1611.2混凝土表層（表面下50～100mm處）溫度.....................................................

17、.........1811.3溫度應(yīng)力的驗(yàn)算.............................................................................................................20C40混凝土配合比設(shè)計(jì)計(jì)算書.........................................................................

18、...............26C45混凝土配合比設(shè)計(jì)計(jì)算書........................................................................................29地墻周長748m鉆孔樁凈長≥35m基坑面積8600㎡首層支撐（3.0m）備注（附工程簡介）和記黃埔地產(chǎn)(武漢江漢北)有限公司的武漢市老浦片商業(yè)及住宅項(xiàng)目總承包工程主體采用框剪結(jié)構(gòu)，裙樓主樓六層，局部

19、七層，裙樓高度為33.3米，局部為45米。三座住宅塔樓(連裙樓)均為四十一層，最高139.225米，為超高層建筑。本工程結(jié)構(gòu)樁基、地下連續(xù)墻已完成，設(shè)計(jì)0.000相當(dāng)于絕對標(biāo)高25.500m。本工程地下室設(shè)置三層，局部兩層，其1層結(jié)構(gòu)面板標(biāo)高為5.700m、6.150m，2層結(jié)構(gòu)面板標(biāo)高為12.3m，3層結(jié)構(gòu)面板標(biāo)高為16.2m；2層地下室部分基坑普挖標(biāo)高為13.45m，3層地下室部分基坑普挖標(biāo)高為17.15m，主樓區(qū)域開挖標(biāo)高為18.

20、85m。地上3棟41層（高139.225m）的高層住宅及六層（高33.3m）裙樓組成，該基坑工程重要性等級為一級，基坑面積約30000m2，基坑略成不規(guī)則矩形布置，東西長約213m，南北長約170m，基坑軸線周長約748m。初步計(jì)算土方開挖量約38萬m3。本工程采用主樓順作、裙樓半逆作相結(jié)合的方法施工，故支護(hù)形式為首層采用臨時(shí)鋼筋砼支撐體系，開挖地庫一層及地庫二層時(shí)利用結(jié)構(gòu)梁板作為支撐體系。工程地下室底板封底節(jié)點(diǎn)工期300日歷天，0.0