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1毕业设计（论文）题目摘要本设计为XX市某大厦深基坑支护方案及设计，设计过程中主要参考国家现行规范以及本科期间所学教科书，根据给定的地质勘探资料，结合工程实际进行了深基坑的支护设计与计算。本设计首先依据土层参数、设计基坑周边环境确定了设计方案，根据安全、经济的原则选定了该基坑的支护方案为土钉墙支护与桩锚支护。本论文主要部分为桩锚支护与土钉墙支护的设计计算。桩锚设计部分通过计算土压力、反弯点、水平支撑力等，完成了桩和锚杆的支护桩的配筋计算、锚杆的设计以及基坑抗倾覆、抗隆起、抗渗流等稳定性验算。土钉墙设计部分通过土钉的长度计算、配筋计算、整体稳定性验算完成了土钉墙的支护设计。关键词：深基坑工程；基坑支护；土钉墙；桩锚支护2LuoyangdeepexcavationofabuildingplananddesignABSTRACTThedesignforthebuildingindeepexcavationplananddesign,thedesignprocessaswellasthemainreferencecurrentnationalnormsduringtheundergraduatetextbooks,accordingtothegivengeologicalexplorationdata,combinedwiththeactualconstructionofdeepfoundationpitsupportdesignandcalculation.Thedesignisfirstbasedonsoilparameters,designsurroundingenvironmentdeterminespitdesign,accordingtothesecurityandeconomicprinciplesofthepitselectedsupportingschemesforthesoilnailingandpileanchor.Themainpartofthepaperpileanchorandsoilnailingthedesigncalculations.Pile-anchordesignpartbycalculatingearthpressure,inflectionpoints,horizontalsupportforce,etc.,completedtheanchorpilesandpilessupportingthereinforcementcalculation,anchordesignandexcavationoverturning,anti-bump,anti-seepagestabilityofchecking.Soilnailwalldesigninpartthroughthesoilnaillengthcalculation,reinforcement,theoverallstabilityofthesoilnailwallfinishedcheckingthesupportingdesign.KEYWORDS:Deepexcavation,excavation,soilnailingwall,PARS3目录前言................................................................................................6第一章工程简介及基坑设计参数...................................................81.1工程简介................................................................................81.2工程地质概况.................................................................81.3水文地质概况.................................................................81.4基坑支护设计土层参数.................................................9第二章设计依据及方案选择.........................................................102.1本基坑工程设计依据.........................................................102.1.1相关技术规范规程...................................................102.1.2采用相关资料、施工图纸.........................................102.2基坑支护设计原则与设计思路...........................................112.3深基坑支护方案简介及方案初选.......................................112.3.1深基坑方案简介........................................................112.3.2方案初选...................................................................12第三章桩锚支护设计.....................................................................133.1土压力应力计算.................................................................133.1.1土压力计算理论.......................................................133.1.3土压力计算...............................................................143.2桩锚式支护结构设计.........................................................163.2.1计算规定...................................................................163.2.2反弯点的确定...........................................................173.2.3水平支撑力的计算...................................................183.3桩墙嵌固深度的确定.........................................................203.3.1桩墙嵌固深度的计算理论........................................203.3.2嵌固深度的计算.......................................................203.4支护结构的设计长度.........................................................223.5结构计算.............................................................................223.5.1截面弯矩设计值的计算............................................223.5.2截面剪力设计值的计算............................................2543.5.3支点结构支点力设计值............................................253.6支护桩的配筋计算.............................................................253.6.1钻孔灌注桩结构及计算特点....................................253.6.2拟用条件...................................................................263.6.3计算理论...................................................................263.6.4支护桩配筋计算.......................................................273.7土层锚杆的设计与计算.....................................................293.7.1概述...........................................................................293.7.2锚杆的设计计算理论................................................293.7.3锚杆设计计算...........................................................303.8基坑的稳定性验算.............................................................313.8.1基坑的抗倾覆稳定性验算........................................323.8.2基坑的抗隆起稳定性验算........................................343.8.3基坑抗渗透稳定性验算................错误!未定义书签。3.8.4基坑整体稳定性验算...............................................35第四章土钉支护设计.....................................................................374.1土钉支护简介......................................................................374.2土钉墙的设计计算..............................................................374.2.1土钉的布置及基坑土层参数：.................................374.2.2土层参数计算：.......................................................374.2.3确定土钉布置图：...................................................384.2.4土钉长度的计算.......................................................394.2.5整体稳定性验算.......................................................425.1工程方案............................