1成都理工大学2015届学士学位毕业设计（论文）成都市金牛区某建筑场地基坑支护及降水设计作者姓名：古滔学号：201103010112专业：土木工程（岩土工程方向）指导教师：郑达摘要本论文对成都成都市金牛区某建筑场地基坑支护及降水进行设计。本基坑开挖深度为15米，地下水埋深为-9.4m左右，对本场地基坑开挖时需要进行降水处理。本工程进行基坑支护的设计时，在考虑安全的前提下，结合技术和工程经济，采用锚拉式排桩支护。利用朗肯土压力理论进行主被动土压力的计算，运用blum法进行内力计算。分析桩身受力，分段求出桩身的最大弯矩值，由最大弯矩进行桩身的配筋计算。支护结构设计计算完成后，对基坑整体稳定性、桩身的抗倾覆及基坑底的抗隆起稳定性进行了验算，结果显示均满足要求。根据渗透系数确定基坑采用管井井点进行降水设计，在降水的设计上对本基坑的降水做了定量的设计计算。并对设计结果进行验算。【关键词】深基坑；基坑支护；降水；锚拉桩；Supportforbuildingfoundation2成都理工大学2015届学士学位毕业设计（论文）pitinJinniuDistrict,ChengduName：GuTaoStudentNo.：201103010112Major：CivilEngineering(GeotechnicalEngineering)Supervisor：ZhengDaAbstractThispaperdesignsthefoundationpitsupportandprecipitationofabuildingbuildinginChengdu,JinniuDistrict,Chengdu..Thebasepitexcavationdepthof15meters,thegroundwaterdepthisabout-9.4m,thesiteoftheexcavationtoprecipitationtreatment.Inthedesignoffoundationpitsupport,thecombinationoftechnologyandengineeringeconomy,withtheanchorpulltypepilesupporting,isconsideredwhenconsideringthepremiseofsafety..CalculationofpassiveearthpressureusingtheRankinesoilpressuretheory,usingtheequivalentbeammethodtocalculateinternalforce.Byforceanalysisofpile,themaximumbendingmomentofpilesectioncalculatedbythevalueofthemaximumbendingmomentofpilereinforcementcalculation.Afterthecalculationofthesupportingstructuredesign,thestabilityofthefoundationpit,theantioverturningofpilesandthestabilityofthefoundationpitbottomwerechecked.Theresultsshowedthatthefoundationpitwassatisfied..AccordingtothepermeabilitycoefficientofexcavationcanbeobtainedbytubewellpointdewateringdesignindewateringdesignbasedonDupuitwellflowequationofthefoundationpitprecipitationdothequantitativedesignandcalculation.Andthedesignresultischecked.Developedascientificandstrictmonitoringprogram,theconstructionprocessisstrictlymonitored.Keywords:Deepfoundationpit;Foundationpitsupport;foundationpitdewatering;soldierpileretaining;目录目录.........................................................................................................................1第一章绪论...............................................................................................................53成都理工大学2015届学士学位毕业设计（论文）1.1选题依据和研究意义....................................................................................51.2基坑工程的研究现状....................................................................................61.3研究的主要内容与思路................................................................................8第二章场地工程地质条件......................................................................................102.1工程概况......................................................................................................102.2场地位置及交通条件..................................................................................102.3地形地貌......................................................................................................112.4地...
