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1、新建铁路吉林至珲春铁路客运专线工程JHSI标项目经理部制梁台座预压方案新建铁路吉林至珲春铁路客运专线工程JHSI标项目经理部制梁台座预压方案编制:复核:批准:中铁四局集团有限公司吉图珲客运专线JHSⅠ标段项目经理部2012年5月developmentoffreezingplansandemergencyprecautions.3,night-timesettingthefull-timeattendanttoensuresomeoneondutyandondutydayandnightrecording,whilesettingtheWeather
2、man,responsiblelistenstoandpublishedontheweatherconditions.4,shouldcompletetheconstructionofthewinterrainyseasonShi...Hasnotfinishedfillingthepitcoveredwithaponcho,shouldbedrainedbeforethenextfillcleanwatercontentmeettherequirementsbeforeconstructionbegan.5,higherinthewinterra
3、in,priortoconstruction,priorityprojectareas,andbuiltasimplewastewaterfacilities,inordertoensurenormalconstruction.The12thchapter,resourcesplanningandadvancement,introductionofnewtechnology,newtechnology,newequipment,newmaterialmeasuresinordertoensurethesurvivalofseedlingsplant
4、ed,intheplantingprocessexceptinstrictaccordancewiththetenderspecifiedplantingmethodsandtechnicalmeasures,theapplicationofnewtechnologytoensurequality:1,theuseofsomenewscientificachievementsandimprovesurvival.(1)ABT-3rootingpowder.ThiskindofrootingpowderforEvergreenconiferoustr
5、eestakerootandvaluablespeciesoffastrooting,improvethesurvivalrateisobvious.(2)KD-1Superabsorbentpolymers.Insuranceagentcanenhancesoilwaterstorage,waterretentionandimprovesurvival.(3)theuseofpuffingchickenmanure.Hightemperatureexpansion新建铁路吉林至珲春铁路客运专线工程JHSI标项目经理部制梁台座预压方案制梁台座预压方
6、案一、工程概述箱梁设计为32m后张法预应力混凝土单箱单室简支箱梁，梁长32.6m，梁体砼设计强度C50，封锚采用强度等级C50的干硬性补偿收缩混凝土，箱梁顶宽12.20m，底宽为5.30m，梁体中心梁高2.686m。为了保证在箱梁混凝土浇注拆模后满足设计的外形尺寸及拱度要求，检验台座的整体稳定性及实际承载能力，以消除台座的非弹性变形和地基的压缩沉降影响。在施工箱梁前需进行台座预压和地基压缩试验，避免箱梁砼因台座不均匀沉降而出现裂缝，在浇筑箱梁混凝土前前要进行台座的压载试验。制梁台座通过简化受力荷载，采用砂袋代替预压荷载，加载如图。本方案主要针对1#
7、、3#、4#制梁台座进行预压试验，测量等级按四等水准测量控制。箱梁制梁台座预压的工艺流程如下：铺设箱梁底模布置测量标高点并记录好每点的初始标高值H1加载developmentoffreezingplansandemergencyprecautions.3,night-timesettingthefull-timeattendanttoensuresomeoneondutyandondutydayandnightrecording,whilesettingtheWeatherman,responsiblelistenstoandpublishedon
8、theweatherconditions.4,shouldcompletetheconstructionofthewint
