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1、施工安全B-13挡土支撑及模板工程正修科技大学土木工程系杨全成副教授2/8713-1挡土支撑作业13-2邻房安全维护措施13-3挡土支撑施工步骤13-4挡土支撑作业之危害13-5挡土支撑作业之相关危害13-6挡土支撑作业之作业程序13-7挡土支撑作业之护栏3/8713-8模板工程前言13-9模板材料之种类13-10模板工程之检查13-11营造安全卫生设施标准之规定13-12模板及支撑的拆卸4/8挡土支撑作业系为了防止周围地层崩塌以确保地下开挖之作业得以顺利进行之临时构造作业.开挖作业多於工程初期施行,施工期间易受难以掌控之土壤性质及地下水或其它难以预测之外在因素所影响.在工
2、程规模已趋於大型化的营建工程中,挡土支撑俨然已成为开挖作业最重要的核心,愈来愈普遍的工程计划中,其开挖挡土支撑作业在技术上,经费上,所占比重渐趋於增加.13-1挡土支撑作业5/87地下开挖工程进行时,地下水处理得当与否常为影响工程成败之关键,为了防止地下水从周围基地流入,采用止水性高之挡土支撑系统则可顺利处理该问题,但成本较高,因此挡土支撑系统之选择,必须经由地质及地下水状况等考虑之后,再经由与适当排水工法之间的组合加以检讨,采择既经济又安全的挡土支撑作业.13-1nthemainterminal,andthetelephoneOfficeisresponsibleforp
3、rovidingtheappropriatesizeadapterpatchpanelsandelectricalprotectionunit.(Shuttlebus)wiring(IDF)setupintheworkshoponthesecondfloorofthebuilding,locatedintheDistrictofweakelectricalcabinets(well).EngineroomplacedinsidetheCabinet,IDFplacedastandard40Ucabinetsforinstallationofnetworkandwiringd
4、evices,managementcomputerandtelephoneinformation.CabinetdistributionframearemadeofSuperfiveRJ45patchpanelhorizontaltwistedpairconnections.Computerinformationmanagement,adminareausingthejumpers,whichusesprivateRJ45-RJ45softjumpersfornetworkdeviceswithjumpershoppingbetweenallswitches,changes
5、,expansionandmaintenanceweredonequicklyinthewiringcloset.TwistedlengthCentreroomislocatedonthesecondfloor,outwardradiationofeachline(exceptsomepointsmayexceed)doesnotexceed100metresinlength,allinformationforthevariousfloorsallrooms(distributionCabinet)unifiedmanagement.Districtworkshopbuil
6、dingdistributionlines(IDF)viafiberopticcablesconnectedtothetotalroomcabinets.Fiberlengthwere:workshopstwoIDF:totalmorethan1200squaremeters,doublethenumberofstrandscanbecalculatedbymultiplyingtheaveragelengthofthenumberofinformationpointsare.Averagelevelofeachlengthofcable:L=[(S1+S2)/2]+L1+
7、L2l:averagelengthofcable;L1:MDFcableallowance;L2:otherallowancesS1:minimumhorizontalcablelength;S2:maximumhorizontallengthofcable;Officebuildingofinformation:aminimumof26meters,thelongestwas92meters,L=[(28+92)/2]+2.5+1=62.5m;Totallengthof62.5mx792=49500-meteri
