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1、跨线桥梁门洞支撑体系计算书一、计算依据1、《建筑工程模板支撑系统安全技术规程》DB29-203-20102、《浇筑施工模板安全技术规范》JGJ162-20083、《木结构设计规范》GB50005-20034、《钢结构设计规范》GB50017-20035、《混凝土结构设计规范》GB50010-20106、《建筑地基基础设计规范》GB50007-2002二、计算参数1、支撑体系简述支撑系统采用15mm厚竹胶板、下部为100×150mm方木、H型钢纵梁、双拼I360工字钢横梁。2、门洞施工段梁体概况主跨跨中梁高1.8m，端部梁高2.6m；
2、跨中底板厚度0.22m，端部底板厚度为0.5m；跨中腹板厚度0.4m，端部腹板厚度0.7m。桥梁主跨范围梁体为变截面，梁高、底板、腹板方程如下：桥面铺装结构：80mmC40防水混凝土→2mm防水层→80cm中粒式沥青混凝土→40mm细粒式沥青混凝土；总厚度为202mm。梁顶设计标高为11.481m，现状地面标高为3.22m，施工过程中，道路限高4.5m。在门洞范围内，混凝土箱梁的高度为1.8～2.19m，所以梁底剩余净空为：11.481-3.22-0.202-2.19-4.5=1.369m。目前的设计支撑体系高度为：0.015+0.
3、15+0.7=0.865m＜1.369mattentiontoimprovingthequalityandefficiencyofdevelopmentandpaymoreattentiontosecurityandreformthepeople'slivelihood,morefocusonmaintainingsocialharmonyandstability,andpromotethedevelopmentoftownshipeconomyinabetterandfaster,createanewnormalXXdevelop
4、mentandlayamoresolidfoundationforXXbuildawell-offsociety.Completedtasksthisyear,wemustalwayspayspecialattentiontotheprimarytaskofdevelopment.XXweakeconomicbase,lowlevelsofdevelopment,economicconstructionistheCenter,wehavetocreateconditionsforfastereconomicdevelopment,a
5、ccumulatingmorewealth,betterpeople'slives.Effortshouldbemadetothisyear'seconomicgrowth,revenuegrowth,peoplehavemaintainedahighrateofincomegrowth,GDPgrowthofmorethan15percentrespectively.Alwaysgraspthefundamentalimpetusforreform.Wearenow"nosoldiersbehind"manyindicatorsr
6、ankedinthebottomofthecountyfromgettingbigger.Onlybygoingallouttohardwork,hardwork,innovation,reformdoesnotadapttoinstitutionalmechanisms,practices,itispossibletochangethefaceofXXpoor,intoawell-offsocietytogetherwithpeopleacrossthecountry.Wewanttobreaktheoldpatternsofth
7、inking,methodsandorganizationofwork,bravelyandboldlyinto,makingfulluseofalltheadvantages,comprehensivereforms,tomakeallitsvitalityfordevelopmentimpulse,letfullplaytoallsourcesofwealthcreation.Shouldalwaysstability11∴净空满足要求三、支撑系统各构件计算Ø在门洞范围内，两侧箱梁断面几何尺寸如下：第一断面（跨中侧断面）：梁高1
8、.81m，底板厚度0.22m，腹板厚度0.4m，顶板厚度为0.25m；第二断面（边墩侧断面）：梁高2.19m，底板厚度0.36m，腹板厚度0.528m，顶板厚度为0.25m；Ø各构件的力学参数见下表：序号构件名称容重(kN/m3)弹性
