1-1剖改挖孔樁無淤泥設(shè)計(jì)單位：XXX設(shè)計(jì)院設(shè)計(jì)人：XXX設(shè)計(jì)時間：2006-09-1208:49:21----------------------------------------------------------------------[支護(hù)方案]----------------------------------------------------------------------排樁支護(hù)----------------------------------------------------------------------[基本信息]----------------------------------------------------------------------內(nèi)力計(jì)算方法增量法規(guī)范與規(guī)程《建筑基坑支護(hù)護(hù)技術(shù)規(guī)程程》JGGJ1220-999基坑等級二級基坑側(cè)壁重要性性系數(shù)γ01.00基坑深度H(mm)16.000嵌固深度(m))3.000樁頂標(biāo)高(m))0.000樁直徑(m)0.800樁間距(m)1.600混凝土強(qiáng)度等級級C20有無冠梁有├冠梁寬度(m))0.900├冠梁高度(m))0.300└水平側(cè)向剛度((MN/mm)2.722放坡級數(shù)0超載個數(shù)1----------------------------------------------------------------------[超載信息]----------------------------------------------------------------------超載類型超載值作用深度作用寬度距坑邊距形式長度序號(kPa,kN//m)(m)(m)(m)(m)110.000-------------------------------------------------------------------------------------[土層信息]----------------------------------------------------------------------土層數(shù)5坑內(nèi)加固土否內(nèi)側(cè)降水最終深深度(m)17.000外側(cè)水位深度((m)17.000內(nèi)側(cè)水位是否隨隨開挖過程程變化否彈性法計(jì)算方法法m法----------------------------------------------------------------------[土層參數(shù)]----------------------------------------------------------------------層號土類名稱層厚重度浮重度粘聚力內(nèi)摩擦角(m)(kN/m3)(kN/m3)(kPa)(度)1雜填土1.0018.0---5.005.002粘性土8.0019.6---20.0022.003卵石6.0020.0---0.0038.404強(qiáng)風(fēng)化巖1.0020.0---15.0020.005強(qiáng)風(fēng)化巖10.0020.010.021.0029.00層號與錨固體摩粘聚力內(nèi)摩擦角水土計(jì)算m值抗剪強(qiáng)度擦阻力(kPaa)水下(kPa))水下(度)(MN/m4)(kPa)118.0---------0.50---250.0---------9.48---3180.0---------51.30---4100.0---------15.00---5120.021.0029.00合算32.04-------------------------------------------------------------------------[支錨信息]----------------------------------------------------------------------支錨道數(shù)4支錨支錨類型水平間距豎向間距入射角總長錨固段道號(m)(m)(°)(m)長度(m)1錨桿1.6003.00015.0016.007.002錨桿1.6003.50020.0011.504.503錨桿1.6003.50020.0012.007.004錨桿1.6003.50020.0012.507.50支錨預(yù)加力支錨剛度錨固體工況抗拉力道號(kN)(MN/m)直徑(mm)號(kN)10.0030.001502～100.0020.0030.001504～100.0030.0030.001506～100.0040.0030.001508～100.00----------------------------------------------------------------------[土壓力模型及系數(shù)調(diào)整]----------------------------------------------------------------------彈性法土壓力模型: 經(jīng)典法土壓力模型:層號土類名稱水土水壓力主動土壓力被動土壓力被動土壓力調(diào)整系數(shù)調(diào)整系數(shù)調(diào)整系數(shù)最大值(kPaa)1雜填土分算1.0001.0001.00010000.00002粘性土分算1.0001.0001.00010000.00003卵石分算1.0001.0001.00010000.00004強(qiáng)風(fēng)化巖分算1.0001.0001.00010000.00005強(qiáng)風(fēng)化巖合算1.0001.0001.00010000.0000----------------------------------------------------------------------[設(shè)計(jì)結(jié)果]--------------------------------------------------------------------------------------------------------------------------------------------[結(jié)構(gòu)計(jì)算]----------------------------------------------------------------------各工況：內(nèi)力位移包絡(luò)圖：地表沉降圖：----------------------------------------------------------------------[冠梁選筋結(jié)果]----------------------------------------------------------------------鋼筋級別選筋A(yù)s1HRB3352D16As2HRB3352D16As3HPB235d8@200----------------------------------------------------------------------[環(huán)梁選筋結(jié)果]----------------------------------------------------------------------鋼筋級別選筋A(yù)s1HRB3355D20As2HRB3353D20As3HPB235d8@200----------------------------------------------------------------------[截面計(jì)算]----------------------------------------------------------------------[截面參數(shù)]樁是否均勻配筋筋否├受拉筋范圍圓心心角(度)90.0└壓區(qū)拉區(qū)縱筋比比值K1.0混凝土保護(hù)層厚厚度(mm)50樁的縱筋級別HRB335樁的螺旋箍筋級級別HPB235樁的螺旋箍筋間間距(mm)200彎矩折減系數(shù)0.85剪力折減系數(shù)1.00荷載分項(xiàng)系數(shù)1.25配筋分段數(shù)一段各分段長度(mm)19.00[內(nèi)力取值]段內(nèi)力類型彈性法經(jīng)典法內(nèi)力內(nèi)力號計(jì)算值計(jì)算值設(shè)計(jì)值實(shí)用值1基坑內(nèi)側(cè)最大彎彎矩(kN.mm)389.64342.76414.00414.00基坑外側(cè)最大彎彎矩(kN.mm)235.49483.42250.21250.21最大剪力(kNN)286.96290.79358.69358.69段選筋類型級別鋼筋實(shí)配[計(jì)算]面面積號實(shí)配值(mm2或mm22/m)基坑內(nèi)側(cè)縱筋HRB33517D142617[25521]1基坑外側(cè)縱筋HRB33517D142617[25521]箍筋HPB235d10@2000785[-8885]加強(qiáng)箍筋HRB335D14@20000154----------------------------------------------------------------------[錨桿計(jì)算]----------------------------------------------------------------------[錨桿參數(shù)]錨桿材料強(qiáng)度設(shè)設(shè)計(jì)值(MPa))310.0000錨索材料強(qiáng)度設(shè)設(shè)計(jì)值(MPa))1220.0000錨索采用鋼絞線線種類1×7錨桿材料彈性模模量(×10^55MPaa)2.000錨索材料彈性模模量(×10^55MPaa)1.950注漿體彈性模量量(×10^44MPa))3.000土與錨固體粘結(jié)結(jié)強(qiáng)度分項(xiàng)項(xiàng)系數(shù)1.300錨桿荷載分項(xiàng)系系數(shù)1.250[錨桿內(nèi)力]支錨道號錨桿最大內(nèi)力錨桿最大內(nèi)力錨桿內(nèi)力錨桿內(nèi)力彈性法(kN))經(jīng)典法(kN))設(shè)計(jì)值(kN))實(shí)用值(kN))197.4368.45121.79121.792207.95208.13259.93259.933336.55277.46420.69420.694227.32225.15284.15284.15[錨桿自由段長度計(jì)算簡圖]支錨道號支錨類型鋼筋或自由段長度錨固段長度實(shí)配[計(jì)算]面面積錨桿剛度鋼絞線配筋實(shí)用值(m)實(shí)用值(m)(mm2)(MN/m)1錨桿1E259.07.0491[4077]9.772錨桿1E367.04.51018[8992]24.183錨桿2E325.07.01608[14444]47.874錨桿1E405.07.51257[9775]37.97----------------------------------------------------------------------[整體穩(wěn)定驗(yàn)算]----------------------------------------------------------------------計(jì)算方法：瑞典條分法應(yīng)力狀態(tài)：總應(yīng)力法條分法中的土條寬度:1.00m滑裂面數(shù)據(jù)整體穩(wěn)定安全系數(shù)Ks=1.399圓弧半徑(m)R=12.777圓心坐標(biāo)X(m)X=-3.829圓心坐標(biāo)Y(m)Y=8.909----------------