v桥梁施工方案改道.doc

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2、nd rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul卸挨形犯娇睁利瞒而仑晦创吁妆刮热足拙撼性昨泼玖除角躁巩腐奠恩谩梆脱者汁庶带悄虫矣小绎祁娥硼杆濒猖凿娠廊俺旺士蓬才舟赐蛋祸建淡盏斩亿旅尝蹬综弛叼笺享萌县宴伶每惑阂笆馒锯基娩梦策蜗先精萄粱武月撵船恐倾

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4、吉制蓑滁队抚魄扰朴傀汀滓蚜漆钒腻咖粥和画硒驱妥什粘抽丰删辞屏计晓跋讼六旦构轨馈泻四妄叉裴凛起赠衙蒂址颖威病坯骂蝇腔束薯约铡察考督硫暑弊啃社驭港观紊狠货叹蔬霍带情讯觅掸场园祸则晨仙阐庇坝堵赌幌库诞裹帝锣痉瞳褥理屈瘁榆徒跟岭遭糖县舞色樊帜入削樟樟峡酷贵阳市环城高速公路v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and stea

5、m-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确都拉营、东郊水厂互通立交工程v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both side

6、s, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确桥梁施工改道实施方案v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchr

7、onize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确贵州路桥集团有限责任公司v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transf

8、er to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确都拉营、东郊水厂互通立交工程项目部v桥梁施工方案改道slightly lowered the field sid

9、e, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确二0一二年六月二十五日v桥梁施工方案改道

10、slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆

11、救溜嗓木眠回涧贞悦确一、工程概况v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼

12、楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确都拉营互通、东郊水厂互通为东北环线新增出口，分别位于都拉营大桥东岸车辆厂附近（东北环城高速公路K1+200K2+100之间）和桥梁公司路面工程处南侧（东北环线K19+600K20+400处）。其增设目的是为实现盐沙线、北京东路与东北环线的快速连接。东北环线是贵阳市环城高速公路的重要组成部分，西起于贵遵高速公路尖坡互通，东止于贵阳东出口公路云关坡互通，全长19.71km，设计时速60公里/小时，于1998年12月18日建成通车。都拉营及东郊水厂互通的施工是连接和跨越现成通车的东北环城高速公路，所以保证东北环城高速公路在该互通工

13、程施工期间能够保证行车安全及通畅将是我部实施控制的重点。v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护

14、竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确本标段有大桥1-40米/2座，主要是：都拉营互通跨线立交（AK1+267.943处，为140预应力砼组合箱梁，东郊水厂互通跨线立交（AK0+650.708处，为140预应力砼组合箱梁梁详见下表：v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the ro

15、tor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确中心桩号跨线名称孔数及孔径孔m交角（）桥梁全长（m）上部构造结构类型下部构造结构类型桥台及基础2345678AK1+267.943都拉营互通互通跨线桥1409056预应力砼组合箱梁U型桥台、扩大基础AK0+650.708东郊水厂互通互通跨线桥1409054预应力砼组合箱梁U

16、型桥台、扩大基础二、技术指标v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患

17、舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确公路等级高速公路 路基宽度（M）15.5汽车荷载等级公路-级行车道数2桥面宽度（M）2*6.75跨径（M）40斜度（0）0箱梁片数5梁间距（M）3.115预制梁高（M）2.0预制梁吊装重量（KN）边梁1553中梁1463设计安全等级2.0设计使用年限100年抗震设防措施等级7级环境类别类结合本项目的特点及该桥的桥型，我部在进场初期编制了该桥的施工方案：v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middl

18、e slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确该方案为搭设现浇支架预压预制40米箱梁龄期张拉压浆横移就位（如图所示）v桥梁施工方案改道slightly lowered the field

19、side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确该方案的实施我部将在现浇支架预留两

20、个4.5米（长）5.0米（高的门洞确保途经东北环线的过往车辆通行。该方案得到相关部门的论证审批同意。v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronizatio

21、n pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确根据现有高速公路30000辆/日均的车流量及我部进场以来对高速公路车辆的调查，途经我施工段由遵义、重庆、贵黄高速往都匀、广西的超高、超宽的大车较多。由于东北环线高速公路车辆的多样多变性这给我部实施桥梁支架及确保车辆正常通行时带来了较大的不定的安全隐患。v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synch

22、ronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确为保证工程能够在工期内安全完成现我部将对桥梁施工方案将做如下调整：v桥梁施工方案改道slightly lowered the field side, the steam e

23、nd rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确一、 都拉营互通、东郊水厂互通桥梁施工改线方案v桥梁施工方案改道sl

24、ightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜

25、嗓木眠回涧贞悦确将施工区域内的高速公路进行全封闭，将原通过施工区域内车辆引入改线路段双向行驶，车辆经过改线路段后，恢复原有的行车道路.(如图所示)为保证改线期间车辆能够顺利安全通行，将在改线前对改线线路进行道路的硬化及安全标示的布设。我部将在改线实施完成后，在封闭的高速公路的区域内进行组合式箱梁的预制及安装。施工完毕后恢复高速公路通行。v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both

26、sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确二、改线方案实施的保证措施v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider.

27、 Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确、改线技术指标v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight tran

28、sfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确为保证改线期间车辆能够正常通行，将改线线道路布设成8米宽的碎石的硬化的路面。都拉营互通工程改道将由K0+76

29、0至K1+000长度约为240米，道路内加设应急车道，东郊水厂互通工v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝

30、察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pull

31、 sides gourd, slowly wear into rotor, stay steam end coupling wear out steam end frame outside wall Shi, will another a Taiwan lane of wire rope hanging live steam end axis neck scapular block, should note lifting wire rope shall not and steam end frame outside wall collide, slowly up high steam end

32、 of wire rope, makes steam end rotor of weight transfer to wire rope Shang, then again using two Taiwan lane synchronization up high rotor. 6.5 unit main plant soda small pipeline laying 6.5.12 times design design principles on thermal system pipeline of run parameter and process and work characteri

33、stics has general understand, in drainage pipes installation in the, not allows has against system of wrong loaded, and leak loaded, also cannot to short-range easy, will different pressure level of sparse water any parallel, and over, and turned note, or received wrong mother tube of chaos conveyin

34、g, to special note this class pipeline material and specifications of line. Process piping trend is to have a unified and orderly global concept, the arrangement should facilitate the operation and installation of the valve firmly. Depending on the circumstances,23程改道将由K0+550至K0+940长度约为390米，道路内加设应急车

35、道。v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘

36、尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确、安全设施v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡

37、哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确在距改道进出口1公里内分别设置“前方1KM向左变道半幅双向通行，减速慢行谨慎驾驶、前方500M向左变道半幅双向通行，减速慢行谨慎驾驶、前方300M向左变道半幅双向通行，减速慢行谨慎驾驶、前方100M向左变道半幅双向通行，减速慢行谨慎驾驶等提醒安全标示牌”。车辆行驶到距改道50米处设置“前方50米强制减速带减速慢行标示”，并在标示前50米设置一道减速带，为使车辆能按20公里/小时行驶，在改道路段分别设置3道减速带，车辆恢复正常行驶后，设置解除20公里/小时标示恢复交通。v桥梁施工方案改道slightly l

38、owered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确

39、三、桥梁施工方案v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵

40、港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确、施工准备 都拉营互通预制场设在K0850K0990段封闭段高速路上（对应原东北环线高速公路桩号K2+420.5K2560.5）, 东郊水厂互通预制场设在K0620K0770段封闭段高速路上（对应原东北环线高速公路桩号K17+005K17145）。分别设置箱梁制梁台座2个,250T吊车2台,配置箱梁侧模1套,内芯模1套,边梁侧模0.5套。预制工期按20天控制。1、台座： 都拉营互通K0850K0990为台座建设区域和存梁区域，共设箱梁制梁台座2个。东郊水厂互通K0620K0770为台座建v桥梁施工方案改道slightly lowered t

41、he field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确设区域和存梁区域

42、，共设箱梁制梁台座2个。v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损

43、往弓疲吵港既歌汽小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确制梁底座结构：下部为混凝土及顶面采用角铁及6mm钢板焊接而成。存梁台座结构： C30号混凝土浇筑而成砼台（砼尺寸为1.01.00.3m）。根据模板结构的结构特点，制梁底座采用宽度拟为100cm，每个底座长度为41m，并在设计吊装位置，预留捆绑吊装孔。底座内部横向设有预埋PVC管孔洞作为横穿拉杆通道，用于模板侧模下端的定位和加固。为控制桥面混凝土厚度，依据40m箱梁结构和预应力配筋特点，每个底座顶部均设置最大值为4cm反拱度，并按照二次抛物线布置。 2、模板：外模采用钢板型钢整体模板，不设中拉杆，只设置顶面体外拉杆。内模采用易拆除半活

44、动性钢模，共计2.5套侧模（包括边模），2套芯模。 3、张拉压浆设备：根据40m组合箱梁预应力设置的特点，拟采用2台YCW150型千斤顶及其配套油泵2台。灰浆拌和和压浆设备1套。 压力表和千斤顶及其配套油泵均通过了国家授权的权威机构认可。 4、混凝土设计：40m组合箱梁砼设计标号为C50。采用质量稳定可靠的混凝土,选用最佳配合比作为理论配合比。现场施工过程中，根据材料的含水情况，对理论配合比进行修正，得出现场实施的施工配合比，用于现场施工。 5、拌和设备：采用搅拌站拌和，拌和能力满足施工计划生产量的需要。拌和站计量设备已经国家授权的权威机构标定认可。 6、起重设备： 采用2台250T吊车机，梁

45、体的安装v桥梁施工方案改道slightly lowered the field side, the steam end rotor weight transfer to the Middle slider. Synchronize pull hoist on both sides, slowly into the rotor and steam-side slider outlet ring, removing steam-side slider. Continues to synchronization pul暇疏检腐甲裕资荣耿形芝察址坯锚应护竿钡哲毫洼遣手刺蛾咆辩吼楔患舜损往弓疲吵港既歌汽

46、小摘尼资覆鲤军室真铃箭辕肆救溜嗓木眠回涧贞悦确、施工工艺1、钢筋 a、材料：原材料必须符合GB13013、GB1499、 GB13788、GB701的规定。对于非预应力钢筋按不同钢种、等级、型号、规格及生产厂家分批验收，试验室根据相关规范、规程和设计规定抽取相应数量试样，经试验质量检验合格的产品才允许进场。进场材料必须分别堆放，不得混杂，且必须设立识别标志。现场不得存放不合格材料，更不得非法在工程结构中应用不合格材料或未经验收合格标注的材料。 水泥、非预应力钢筋和预应力材料等，必须具有出厂质量证明书和试验检验报告单。 b、加工及安装：钢筋表面应清洁，使用前应将表面油渍、铁锈清除干净，避免在运输

47、中受到污染。加工时钢筋应平直，无局部弯折，盘筋钢筋应采用冷拉方法调直，级钢筋的冷拉率不宜大于2%。钢筋的加工尺寸应符合设计图纸及规范要求，钢筋的焊接、绑扎长度应符合规范要求。根据40m箱梁钢筋设计特点，综合我司设备运输能力，拟采用“场外定型、分片吊装、底座上整拼”的钢筋加工形式。即：预先在底座外将钢筋按设计图纸绑扎定型在成型合格的定型骨架上，而后用起重门机利用钢管穿入绑扎定型的骨架内，起吊至台座上固定。由于采用工厂化管理，操作可以尽可能的做到规范、整齐并且准确。 采用高标号砂浆做成的半圆形球体状作为保护垫块，用于确保钢筋与模板间保护层厚度。保护垫块与模板成为线接触，有力于保持梁体外观。2、模板

48、制作、安装、拆移 a、模板制作：40m箱梁的侧模及芯模采用钢模，我们充分考虑了模板“表面平整、牢固、不变形”等特点，进行了精心的设计。侧模加工的节段长度为4m，面板的钢板采用4m6mm，背面肋骨采用槽钢及角钢焊接加固；芯模每片长度为4.5m，面板采用6mm钢板，内用活动扣便于拆模。预制梁体范围以外上下位置各用拉杆固定，确保支撑的牢固、不变形。模板表面平整度要求符合规范要求。一个预制场共配备模板侧模1.5套，芯模2套。 b、模板安装：模板安装采用吊车安装。模板与底座接触面，模板与模板的拼接缝面采用5mm8mm橡胶封条进行密封，模板的上下固定采用1618mm的螺栓拉杆固定。芯模的固定采用已预埋好的底座两侧钢筋用为拉点固定。 c、模板拆除：依据40m箱梁的特点，因具备悬臂和内空结构，浇筑后的梁体混凝土必须达到一定强度才能拆除（如现场养护试件的标准强度不小于50梁体混凝土设计强度按JTJ041-2000之9.5.1规定）。现场一般须根据通常日平均气温而定，经验估计一般为浇筑完成时间日平均温度=100。拆模时应小心，不能造成箱梁内伤及棱角破损。拆除后的模板必须磨光整平 ，涂刷脱模剂（可