安高大厦基坑工程施工组织设计

安徽理工大学毕业设计I安高大厦基坑工程施工组织设计摘要本次深基坑支护设计的基坑位于合肥市，其面积为12250，基坑深度14.4m，根据毕业设计要求，对此基坑进行支护设计。首先开介绍了多种不同类型支护结构的适用范围和优缺点，通过各个方面来探讨适宜本基坑的开挖支护方案，最后根据实际情况确定是用土钉墙+组合加劲混凝土桩+预应力锚杆复合支护结构构对本基坑进行支护。开始前先设置好各个所需的相关参数，然后进行计算土压力计算，计算后对基坑上部的土钉墙进行设计，对其局部稳定性进行验算；然后在进行SMW工法桩和预应力锚杆的设计，并分部计算各结构的稳定性情况；然后进行整体稳定性验算和抗渗流、抗隆起验算等；最后编写其施工组织，简述各项施工工艺中需要注意的事项和施工的某些标准，最后计算整个工程的工程概预算，为工程施工做好准备。关键词：深基坑，桩锚支护，组合加劲桩，预应力锚杆安徽理工大学毕业设计IITHEFOUNDATIONCONSTRAUCTIONORGANIZATIONDESIGNOFANGAOBUILDINGABSTRACTTheexcavationofdeepfoundationpitsupportingdesignislocatedinHefei,itcoversanareaof12250m2,foundationpitdepthof14.4m,inaccordancewiththerequirementsofgraduationdesign,thesupportingdesignofthefoundationpit.Firstintroducedthevariousopenapplicablerangeandadvantagesanddisadvantagesofdifferenttypesofsupportingstructure,throughthevariousaspectstoexploresuitableforthefoundationpitexcavationsupportingplan,accordingtotheactualsituationispottingsoilnailwall+SMWpile+prestressedcompositestructureforfoundationpitretainingstructureofanchorsupporting.Starttosetupbeforealltherelevantparameters,andthentocalculateearthpressurecalculation,calculatedontheupperpartofsoilnailingwalloffoundationpitdesign,calculationforthelocalstability;TheninSMWpileandprestressanchordesign,calculatethestabilityofthestructureanddivision;Thenoverallstabilitycheckingandseepageresistance,resistancetoupliftthechecking,etc.;Finallywritetheconstructionorganization,brieflydescribestheitemsneedtopayattentiontointheconstructionprocessandconstructionofsomeofthestandard,finallycalculatedthewholeengineeringprojectbudget,tobepreparedfortheengineeringconstruction.KEYWORDS:deepfoundationpit，thepileanchorsupporting，stiffenedpile，pretressedanchor安徽理工大学毕业设计1目录摘要............................................................................................................................................IABSTRACT..............................................................................................................................II1工程概况................................................................................................................................11.1场地位置........................................................................................................................11.2土的工程地质条件........................................................................................................11.3场地地下水条件............................................................................................................12深基坑工程............................................................................................................................22.1深基坑工程的目前发展情况........................................................................................22.2支护结构设计要点和基坑支护设计的原则................................................................22.2.1支护设计及施工的要点............................................................................................22.2.2基坑支护设计的原则................................................................................................32.5支护结构的选用............................................................................................................52.6支护结构的种类............................................................................................................62.6.1放坡开挖....................................................................................................................62.6.2水泥土墙支护........................................................................................................72.6.3钢板桩支护...........................................................................................................92.6.4SMW工法介绍........................................................................................................92.6.5地下连续墙结构介绍..........................................................................................102.6.6土钉墙介绍..........................................................................................................122.6.7锚喷支护介绍......................................................................................................142.7基坑降水.....................................................................................................................152.7.1基坑降水的作用..................................................................................................152.7.2基坑降水方法......................................................................................................152.8本工程选用的支护结构..............................................................................................162.8.1本基坑支护结构的选择......................................................................................162.8.2土方开挖..............................................................................................................173围护结构的设计..................................................................................................................193.1设计基本参数..............................................................................................................193.2土压力计算.............