資源描述：
《筏板基礎(chǔ)大體積混凝土降溫施工》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫(kù)。
1、筏板基礎(chǔ)大體積混凝土澆筑降溫施工方案一、編制依據(jù)?《建筑工程施工質(zhì)量驗(yàn)收統(tǒng)一標(biāo)準(zhǔn)》GB50300-2001?《建筑地基基礎(chǔ)工程施工質(zhì)量驗(yàn)收規(guī)范》GB50202-2002?《混凝土結(jié)構(gòu)工程施工規(guī)范》GB50666-2011?《普通混凝土用砂質(zhì)量標(biāo)準(zhǔn)及檢驗(yàn)方法》JGJ52－92?《普通混凝土用碎石和卵石質(zhì)量標(biāo)準(zhǔn)及檢驗(yàn)方法》GJ53－92?《混凝土膨脹劑》GB23439-2009?《混凝土外加劑應(yīng)用技術(shù)規(guī)范》GB50119－2003?《普通混凝土配合比設(shè)計(jì)規(guī)程》JGJ55－2011?《大體積混凝土施工規(guī)范》GB5049
2、6-2009?《高層建筑筏形及箱形基礎(chǔ)技術(shù)規(guī)范》JGJ6-2011??二、工程概況?本工程3#主樓基礎(chǔ)為筏板基礎(chǔ)，板厚1.8m，屬于大體積混凝土。筏板整體混凝土工程量約為3400m3，混凝土強(qiáng)度等級(jí)C30；擋水板和擋土墻砼為C30.P6。外加膨脹抗裂防水劑。這種大體積混凝土底板施工具有水化熱高、收縮量大、容易開(kāi)裂等特點(diǎn)，故底板大體積混凝土澆筑應(yīng)作為一個(gè)施工重點(diǎn)和難點(diǎn)認(rèn)真對(duì)待。大體積混凝土施工重點(diǎn)主要是將溫度應(yīng)力產(chǎn)生的不利影響減少到最少，防止和降低裂縫的產(chǎn)生和發(fā)展。因此我項(xiàng)目部考慮采取如下施工措施。三、混凝土配合比
3、?superiortorecruitfull-timepeacevolunteers,andtheCountyBureauofPingAnzhiMayTownshipPeacevolunteersintegrationanddevelopment,jointlycarryoutthevolunteerserviceactivities.ActivitiesandpicturestotimelysubmitcommandcenterandthePropagandaDepartment,convenientforin
4、ternalandexternalpublicityandcommunication.ThePropagandaDepartmentofthecountybureautodovolunteerworkinstructionschedulingandcoordination,andsummarizeandpopularizeadvancedexperience,tofacilitatethemtolearnfromeachother,andtimelyorganizationofeducationandtraini
5、ng,publicityandevaluationandaward.Atthesametime,onamonthlybasisvolunteerssafeconstructionandactivitieswereinformedonline,organizationconstructionincludedintheglobalperformanceappraisal,paycloseattentiontoimprovingthemanagementsystem,establishassessmentincenti
6、ves,theworkofaseriousandresponsible,outstandingachievementsPersonneltogiverecognition,andgivesomespiritualandmaterialincentives,fullymobilizetheenthusiasmofthemajorityofthevolunteers,attachimportancetocreatepeacevolunteerwork,respectthepeacevolunteers,praises
7、ecurityvolunteersbehavioroftheatmosphereandsparenoefforttopromotethesmoothdevelopmentoftheconstructionofsafetyvolunteers.Fourth,insistondifferentiatedprinciple.Peacevolunteersjusttheauxiliarypowerofpublicsecurityorgans,intheworkofthedeploymentandassignedtheta
8、sklearning,traininganddailycontact,toabidebytheprincipleofconfidentiality,andregulatetheirbehavior,notthevolunteersdothingsneverletvolunteerstodo,resolutelyput15考慮水泥水化熱引起的溫度應(yīng)力和溫度變形，在混凝土級(jí)配
