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筒仓模块化刚性滑模平台设计与施工关键技术研究

日期(qi):2021年(nian)04月22日 编辑:ad201107111759308692 作(zuo)者:s11竞猜平台 点(dian)击次数:348
论(lun)文价格:150元(yuan)/篇 论文编(bian)号:lw202104101702592661 论文字数:35699 所属(shu)栏(lan)目(mu):工程管理(li)论文(wen)
论文地区:中(zhong)国 论(lun)文语种:中文 论文(wen)用途:硕士毕业(ye)论文(wen) Master Thesis

本文(wen)是一篇工(gong)程管理(li)论(lun)文(wen),本文(wen)参考模(mo)(mo)块化技术,提出一种筒(tong)仓模(mo)(mo)块化刚性滑模(mo)(mo)平(ping)台(tai)。运用(yong)有(you)限元软件(jian)SAP2000 建立了(le)整体平(ping)台(tai)模(mo)(mo)型,对(dui)平(ping)台(tai)整体结构进行(xing)了(le)加载(zai)分析和优(you)选杆件(jian)截面,同时运用(yong)有(you)限元软件(jian) ABAQUS 对(dui)复杂节点进行(xing)了(le)模(mo)(mo)拟验算,保证(zheng)了(le)平(ping)台(tai)施工(gong)的(de)安全性,并(bing)对(dui)该平(ping)台(tai)的(de)施工(gong)技术进行(xing)探讨(tao)。


第 1 章 绪论(lun)


1.1 研究(jiu)背景与意义

筒仓(cang)(cang)是用来(lai)储(chu)存(cun)小块(kuai)状材料的一(yi)种(zhong)贮藏结构,它既可(ke)以(yi)作为储(chu)存(cun)物料的仓(cang)(cang)库(ku),又(you)可(ke)以(yi)用来(lai)作为物资生产调节与(yu)运(yun)转管理的设(she)施。近年来(lai),随(sui)着筒仓(cang)(cang)不断(duan)呈现出(chu)自身容量较(jiao)大(da)、占地面积相对较(jiao)小、卸料速度(du)较(jiao)快、运(yun)行成本(ben)相对较(jiao)低、以(yi)及对环(huan)境造成较(jiao)小程(cheng)度(du)污染(ran)等(deng)优(you)点。因(yin)此在仓(cang)(cang)储(chu)方面,筒仓(cang)(cang)在一(yi)定程(cheng)度(du)上逐步取代(dai)了库(ku)房建(jian)筑的建(jian)设(she),同时广泛的应用于(yu)化工、矿业、电(dian)力(li)、物流(liu)、建(jian)材、农业等(deng)诸(zhu)多领(ling)域。

目前筒(tong)仓结构(gou)正向(xiang)着更(geng)(geng)大更(geng)(geng)高发(fa)展,以(yi)此来增大筒(tong)仓的(de)使(shi)用(yong)空间(jian)[1]。今后筒(tong)仓研(yan)究建(jian)设(she)的(de)重(zhong)点将会是大直径筒(tong)仓的(de)施(shi)(shi)工方法,不断提升(sheng)(sheng)筒(tong)仓施(shi)(shi)工专业技术对保障工程质(zhi)量(liang)、施(shi)(shi)工安全和(he)提升(sheng)(sheng)市场竞争力(li)具(ju)备突出的(de)重(zhong)要作(zuo)用(yong)[2]。

筒仓(cang)(cang)滑(hua)(hua)(hua)模(mo)(mo)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)中常用柔性(xing)和刚性(xing)两种形式的(de)操作平(ping)(ping)台(tai)(tai),采用刚性(xing)滑(hua)(hua)(hua)模(mo)(mo)平(ping)(ping)台(tai)(tai)进(jin)行(xing)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)时(shi),平(ping)(ping)台(tai)(tai)不(bu)光(guang)作为(wei)滑(hua)(hua)(hua)模(mo)(mo)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)阶段的(de)操作平(ping)(ping)台(tai)(tai),滑(hua)(hua)(hua)模(mo)(mo)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)结(jie)(jie)束后(hou)还(hai)需要(yao)作为(wei)仓(cang)(cang)顶(ding)(ding)结(jie)(jie)构施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)的(de)支(zhi)撑平(ping)(ping)台(tai)(tai)。当(dang)刚性(xing)滑(hua)(hua)(hua)模(mo)(mo)平(ping)(ping)台(tai)(tai)作为(wei)仓(cang)(cang)顶(ding)(ding)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)支(zhi)撑平(ping)(ping)台(tai)(tai)时(shi),此(ci)时(shi)承(cheng)(cheng)受的(de)荷载(zai)主要(yao)有施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)时(shi)的(de)活(huo)荷载(zai)和筒仓(cang)(cang)顶(ding)(ding)部结(jie)(jie)构的(de)自重(zhong)荷载(zai)[3]。随着施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)筒仓(cang)(cang)直(zhi)径的(de)增(zeng)大(da),刚性(xing)滑(hua)(hua)(hua)模(mo)(mo)平(ping)(ping)台(tai)(tai)重(zhong)量(liang)也会显著(zhu)增(zeng)大(da),导致(zhi)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)成本增(zeng)加。大(da)直(zhi)径筒仓(cang)(cang)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)时(shi),刚性(xing)滑(hua)(hua)(hua)模(mo)(mo)平(ping)(ping)台(tai)(tai)往往需要(yao)搭设中心脚手架同时(shi)设置斜拉撑来提高承(cheng)(cheng)载(zai)能(neng)力(li)(li),而(er)且筒仓(cang)(cang)锥壳施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)时(shi)通常需要(yao)分几次进(jin)行(xing)浇筑(zhu),导致(zhi)了工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)期长(zhang)、成本高等(deng)问题出现。柔性(xing)滑(hua)(hua)(hua)模(mo)(mo)平(ping)(ping)台(tai)(tai)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)时(shi)平(ping)(ping)台(tai)(tai)重(zhong)量(liang)较轻(qing),可以大(da)幅度(du)降低平(ping)(ping)台(tai)(tai)耗钢量(liang)的(de)同时(shi)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)易(yi)(yi)于进(jin)行(xing)平(ping)(ping)稳滑(hua)(hua)(hua)升,在平(ping)(ping)台(tai)(tai)发生偏扭时(shi)容易(yi)(yi)纠正,平(ping)(ping)台(tai)(tai)使用后(hou)拆除简(jian)易(yi)(yi),很大(da)程度(du)上减少了人力(li)(li)和物力(li)(li)的(de)投入[4]。但柔性(xing)滑(hua)(hua)(hua)模(mo)(mo)平(ping)(ping)台(tai)(tai)需要(yao)搭设满堂脚手架来支(zhi)撑仓(cang)(cang)顶(ding)(ding)结(jie)(jie)构施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong),导致(zhi)筒仓(cang)(cang)的(de)直(zhi)径越(yue)大(da)施(shi)(shi)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)成本越(yue)高。

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1.2 国内(nei)外研究(jiu)现状

国外筒(tong)(tong)仓已经延续(xu)了 200 多年的(de)(de)修建(jian)和发展历史,早期修建(jian)的(de)(de)钢筋混(hun)凝土(tu)筒(tong)(tong)仓,因施工(gong)技(ji)术(shu)(shu)水(shui)平较(jiao)(jiao)低导致直径都较(jiao)(jiao)小,随(sui)(sui)着设计(ji)与施工(gong)技(ji)术(shu)(shu)的(de)(de)不(bu)断(duan)(duan)完(wan)善大(da)(da)直径筒(tong)(tong)仓才(cai)开始出现的(de)(de)。随(sui)(sui)着农(nong)业、矿业等行业的(de)(de)加速发展,储存(cun)、装卸的(de)(de)物料总量也(ye)迅猛增(zeng)长,在(zai)这(zhei)种背景下,为了满(man)足日益(yi)增(zeng)大(da)(da)的(de)(de)使用需(xu)求,大(da)(da)储量筒(tong)(tong)仓开始出现在(zai)世(shi)界(jie)各国。同(tong)时随(sui)(sui)着筒(tong)(tong)仓施工(gong)中成功运(yun)用液(ye)压滑升模(mo)板技(ji)术(shu)(shu),以及(ji)不(bu)断(duan)(duan)发展完(wan)善与筒(tong)(tong)仓相关(guan)配套处理设备(bei),因此筒(tong)(tong)仓在(zai)修建(jian)规模(mo)上也(ye)不(bu)断(duan)(duan)增(zeng)大(da)(da)[5]。发展至(zhi)今,随(sui)(sui)着大(da)(da)储量筒(tong)(tong)仓的(de)(de)需(xu)求不(bu)断(duan)(duan)增(zeng)加,筒(tong)(tong)仓在(zai)建(jian)造技(ji)术(shu)(shu)上获(huo)得了很(hen)大(da)(da)程度的(de)(de)发展和提升。

1943 年,参考以往(wang)滑模(mo)(mo)施(shi)工技术,瑞典人(ren) AB Bygging 发(fa)(fa)明了中央式控制滑模(mo)(mo)系统(tong)(SLIP FORMG SYSTEM),这次发(fa)(fa)明彻底改变了以往(wang)凭借(jie)人(ren)力进行提升(sheng)动力的(de)状(zhuang)况,极(ji)大促进了筒仓滑模(mo)(mo)施(shi)工工艺的(de)发(fa)(fa)展与应(ying)用[6]。

20 世纪,L.Boyd Mercer 等人(ren)详细描述了(le)滑(hua)(hua)模(mo)施工(gong)时(shi)操作平台系(xi)统的(de)(de)滑(hua)(hua)模(mo)施工(gong)技巧,分(fen)析了(le)滑(hua)(hua)模(mo)施工(gong)时(shi)容易出现的(de)(de)问题,并对滑(hua)(hua)模(mo)施工(gong)中容易出现的(de)(de)这些问题进(jin)行了(le)总(zong)结[7]。Michal S. Zakrzewski 根(gen)据自身的(de)(de)施工(gong)经验和研究(jiu)(jiu)项目针对 9 个不同样式的(de)(de)筒仓滑(hua)(hua)模(mo)装(zhuang)置设计进(jin)行了(le)描述,同时(shi)利(li)用(yong)有限元软件建立模(mo)型(xing)进(jin)行了(le)分(fen)析[8]。Ernani C de Araújo,Carlito Calil 根(gen)据实(shi)际(ji)工(gong)程的(de)(de)总(zong)结对筒仓仓顶施工(gong)平台进(jin)行了(le)设计研究(jiu)(jiu)[9]。

进(jin)入 21 世纪(ji),D Briassoulis 对非对称压力(li)分(fen)布下的(de)筒仓仓顶(ding)(ding)锥壳进(jin)行了(le)有(you)限(xian)元分(fen)析,对筒仓的(de)仓顶(ding)(ding)施工进(jin)行了(le)探讨[10]。K.T.Foss,M.Maage 等(deng)人模(mo)(mo)拟研究(jiu)了(le)刚(gang)性滑(hua)模(mo)(mo)平台滑(hua)模(mo)(mo)施工时(shi)混凝土(tu)(tu)与模(mo)(mo)板之间的(de)摩擦系数,为了(le)将摩擦系数降低,针(zhen)对混凝土(tu)(tu)的(de)配合比调整进(jin)行了(le)研究(jiu),以此来降低混凝土(tu)(tu)表面(mian)受到损害(hai)的(de)可能性[11]。Tarek Zayed,M.Reza Sharifi,Sandel Baciu,Mohamed Amer 建立了(le)滑(hua)模(mo)(mo)平台使用于钢筋混凝土(tu)(tu)筒仓时(shi)的(de)有(you)限(xian)元模(mo)(mo)型,并通过(guo)几个实际案(an)例数据证明了(le)有(you)限(xian)元模(mo)(mo)拟分(fen)析的(de)准(zhun)确(que)性[12]。

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第 2 章 传统大跨刚性滑(hua)模平台筒仓施工


2.1 传统大跨刚性滑(hua)模(mo)平台种(zhong)类(lei)

刚性(xing)滑(hua)模(mo)(mo)(mo)(mo)平台(tai)是筒仓(cang)滑(hua)模(mo)(mo)(mo)(mo)施工(gong)的(de)主要(yao)工(gong)作平台(tai),也是施工(gong)材料和工(gong)具的(de)堆放场所。施工(gong)人员先在(zai)刚性(xing)滑(hua)模(mo)(mo)(mo)(mo)平台(tai)上进行(xing)滑(hua)模(mo)(mo)(mo)(mo)工(gong)作,在(zai)滑(hua)模(mo)(mo)(mo)(mo)施工(gong)之后(hou)刚性(xing)滑(hua)模(mo)(mo)(mo)(mo)平台(tai)还会作为仓(cang)顶施工(gong)的(de)模(mo)(mo)(mo)(mo)架。

2.1.1 桁(heng)架式刚性(xing)滑模平(ping)台(tai)

当筒(tong)仓(cang)为内外筒(tong)同时滑升施工时,经常(chang)会选用桁架(jia)(jia)式(shi)刚性滑模平(ping)台(tai),需(xu)要使用钢管和扣(kou)件搭设的中心(xin)脚手架(jia)(jia)作为钢平(ping)台(tai)的中心(xin)承(cheng)重柱。

桁(heng)架上(shang)每隔一(yi)段(duan)距离便(bian)铺(pu)设钢、木格(ge)栅,同时(shi)需要(yao)在格(ge)栅上(shang)铺(pu)设平(ping)(ping)(ping)台(tai)板。在有现浇钢筋混凝土盖板时(shi),操(cao)(cao)作(zuo)平(ping)(ping)(ping)台(tai)的(de)(de)桁(heng)架可以(yi)作(zuo)为(wei)顶盖混凝土的(de)(de)模板。滑模操(cao)(cao)作(zuo)平(ping)(ping)(ping)台(tai)可分为(wei)内、外操(cao)(cao)作(zuo)平(ping)(ping)(ping)台(tai),有时(shi)还会附带(dai)吊架平(ping)(ping)(ping)台(tai)。内操(cao)(cao)作(zuo)平(ping)(ping)(ping)台(tai)的(de)(de)主要(yao)承重桁(heng)架支撑到(dao)提升架立(li)柱上(shang),或通过支托将(jiang)桁(heng)架承受的(de)(de)荷载直接传递给围(wei)圈(quan),外操(cao)(cao)作(zuo)平(ping)(ping)(ping)台(tai)的(de)(de)三角挑架可通过螺栓连接支撑到(dao)提升架的(de)(de)外立(li)柱或外围(wei)圈(quan)上(shang)。

桁(heng)(heng)(heng)架(jia)式(shi)(shi)刚性滑模平(ping)台(tai)(tai)(tai)的布置形式(shi)(shi)分(fen)为平(ping)行(xing)(xing)式(shi)(shi)、井字式(shi)(shi)和辐射式(shi)(shi),当选用平(ping)行(xing)(xing)式(shi)(shi)桁(heng)(heng)(heng)架(jia)平(ping)台(tai)(tai)(tai)时,相邻两(liang)个桁(heng)(heng)(heng)架(jia)之间(jian)的弦杆还需(xu)要设置水平(ping)支撑,以(yi)此(ci)来保证桁(heng)(heng)(heng)架(jia)的侧向稳(wen)定(ding)。井字式(shi)(shi)桁(heng)(heng)(heng)架(jia)平(ping)台(tai)(tai)(tai)的主(zhu)桁(heng)(heng)(heng)架(jia)需(xu)要进(jin)行(xing)(xing)整体(ti)制(zhi)作,副桁(heng)(heng)(heng)架(jia)则需(xu)要分(fen)段制(zhi)作,副桁(heng)(heng)(heng)架(jia)需(xu)运到(dao)现(xian)场后再与(yu)主(zhu)桁(heng)(heng)(heng)架(jia)进(jin)行(xing)(xing)拼装。桁(heng)(heng)(heng)架(jia)式(shi)(shi)刚性滑模平(ping)台(tai)(tai)(tai)的桁(heng)(heng)(heng)架(jia)内力分(fen)析与(yu)架(jia)体(ti)计(ji)算应(ying)根据(ju)荷载(zai)最大时进(jin)行(xing)(xing),钢(gang)桁(heng)(heng)(heng)架(jia)上(shang)弦、下弦、腹(fu)杆尺寸(cun)规格也由(you)此(ci)而确定(ding)[33-35]。

图 2-1 鼓圈辐射桁架式刚性滑模平台Fig. 2-1 Cylindrical radiation truss rigid sliding mode platform

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2.2 传统大跨平台(tai)中(zhong)心脚手架的(de)搭设

2.2.1 中心脚手架的(de)作用

(1)内外筒同时(shi)滑升施工时(shi),可以固定内筒中(zhong)的支承杆(gan);

(2)滑(hua)模(mo)施工后(hou)可(ke)以对(dui)刚性滑(hua)模(mo)平台直接(jie)进行支撑;

(3)锥壳施工时(shi)要承(cheng)(cheng)受最大荷(he)(he)载,因(yin)此(ci)(ci)所有(you)的构造计算均应考虑(lv)此(ci)(ci)时(shi)荷(he)(he)载,而(er)中心(xin)脚手架就是此(ci)(ci)时(shi)平台承(cheng)(cheng)受荷(he)(he)载的内部作用点;

(4)中心脚(jiao)手(shou)架在(zai)锥壳上环梁平面结构施工时可以(yi)作(zuo)为模板脚(jiao)手(shou)架使用;

(5)在滑模完成后,刚性滑模平台需要落到(dao)中心(xin)脚手架上(shang),此时中心(xin)脚手架有(you)支撑刚性滑模平台的作用。

2.2.2 中(zhong)心脚手架的布(bu)置(zhi)

中(zhong)心(xin)脚(jiao)(jiao)手架的布(bu)置需要根据筒仓(cang)施(shi)工(gong)(gong)计(ji)(ji)划来进行(xing)初步(bu)计(ji)(ji)算(suan),一般筒仓(cang)工(gong)(gong)程在仓(cang)顶锥(zhui)壳施(shi)工(gong)(gong)时中(zhong)心(xin)脚(jiao)(jiao)手架承受最大荷(he)载[37]。根据施(shi)工(gong)(gong)方(fang)案(an)以(yi)及锥(zhui)壳最不利(li)施(shi)工(gong)(gong)状态可以(yi)得到脚(jiao)(jiao)手架立(li)杆(gan)之间(jian)的间(jian)距和步(bu)距,脚(jiao)(jiao)手架立(li)杆(gan)不仅要保证稳定性,同时还需要承受上部(bu)施(shi)工(gong)(gong)荷(he)载,要经过(guo)计(ji)(ji)算(suan)后满足施(shi)工(gong)(gong)要求。中(zhong)心(xin)脚(jiao)(jiao)手架一般采用Ф48×3.5 钢管搭设,中(zhong)心(xin)脚(jiao)(jiao)手架如图 2-2 所示。

图 2-2 中心脚手架立面图

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第 3 章 筒仓刚性滑模平台(tai)模块化设计......................15

3.1 模块化简介............................15

3.1.1 模块化设(she)计思(si)想..................15

3.1.2 模(mo)块化在滑模(mo)施(shi)工中的需求....................15

第(di) 4 章 模(mo)块化刚性滑模(mo)平台整体设(she)计........................23

4.1 SAP2000 简介.....................23

4.2 参数选择........................23

4.3 仓顶施工工况..........................23

第 5 章 模块(kuai)化刚性滑模平台拼接节点设计...........................37

5.1 辐(fu)射(she)桁架(jia)拼接(jie)设(she)计................................37

5.2 中心桁架拼接设计.................38

5.3 鼓圈拼接(jie)设计................................39


第 6 章 模块(kuai)化(hua)刚(gang)性(xing)滑模平台施工关键技术(shu)


6.1 模块化刚性滑模平台(tai)组装工艺

模(mo)块化刚性滑模(mo)平(ping)台的(de)组装(zhuang)宜按照下列程序进行,并应根据现(xian)场(chang)实际情(qing)况完善滑模(mo)平(ping)台,组装(zhuang)详细(xi)流程为:放(fang)线(xian)抄平(ping)→搭设平(ping)台安(an)(an)装(zhuang)支撑平(ping)台→拼(pin)装(zhuang)鼓(gu)圈→安(an)(an)装(zhuang)辐射桁架(jia)→安(an)(an)装(zhuang)下撑式拉杆→拼(pin)装(zhuang)环向支撑→安(an)(an)装(zhuang) U 型卡扣→安(an)(an)装(zhuang)内吊(diao)架(jia)→安(an)(an)装(zhuang)外吊(diao)架(jia)→安(an)(an)全网张挂(gua)

(1)首先要在(zai)施工现(xian)场进行放线抄平,能够精(jing)确(que)定位中心盘位置,然(ran)后(hou)(hou)搭设模(mo)块化(hua)刚性滑模(mo)平台的(de)(de)(de)安装支撑平台,然(ran)后(hou)(hou)将鼓(gu)圈模(mo)块中的(de)(de)(de)中心桁架部分与中心盘使用普(pu)通(tong)螺栓进行连接,再然(ran)后(hou)(hou)将拼(pin)装鼓(gu)圈的(de)(de)(de)标准节(jie)通(tong)过(guo)法兰节(jie)点进行拼(pin)接牢固。

(2)模块化(hua)刚性滑模平台(tai)(tai)的(de)(de)辐(fu)(fu)(fu)(fu)射(she)(she)(she)桁(heng)(heng)(heng)架(jia)(jia)(jia)(jia)拼接可以与鼓(gu)圈的(de)(de)安装(zhuang)同步进行(xing),根据(ju)所使用的(de)(de)筒仓平台(tai)(tai)尺寸进行(xing)计算(suan)出所需辐(fu)(fu)(fu)(fu)射(she)(she)(she)桁(heng)(heng)(heng)架(jia)(jia)(jia)(jia)的(de)(de)长度(du),通过(guo)螺栓及拼接节(jie)点连(lian)(lian)接构件将所需辐(fu)(fu)(fu)(fu)射(she)(she)(she)桁(heng)(heng)(heng)架(jia)(jia)(jia)(jia)进行(xing)组装(zhuang)连(lian)(lian)接,之(zhi)后(hou)将连(lian)(lian)接完成的(de)(de)辐(fu)(fu)(fu)(fu)射(she)(she)(she)桁(heng)(heng)(heng)架(jia)(jia)(jia)(jia)整体吊起,通过(guo)螺栓将辐(fu)(fu)(fu)(fu)射(she)(she)(she)桁(heng)(heng)(heng)架(jia)(jia)(jia)(jia)下(xia)弦固定至鼓(gu)圈立柱的(de)(de)钢(gang)牛腿(tui)位置,使钢(gang)牛腿(tui)作为辐(fu)(fu)(fu)(fu)射(she)(she)(she)桁(heng)(heng)(heng)架(jia)(jia)(jia)(jia)的(de)(de)支撑点,降(jiang)低(di)后(hou)续安装(zhuang)时螺栓对孔的(de)(de)难度(du),最后(hou)完成辐(fu)(fu)(fu)(fu)射(she)(she)(she)桁(heng)(heng)(heng)架(jia)(jia)(jia)(jia)上(shang)弦与鼓(gu)圈上(shang)环(huan)梁的(de)(de)连(lian)(lian)接,至此(ci)模块化(hua)刚性滑模平台(tai)(tai)辐(fu)(fu)(fu)(fu)射(she)(she)(she)桁(heng)(heng)(heng)架(jia)(jia)(jia)(jia)与鼓(gu)圈连(lian)(lian)接完毕。

(3)鼓圈(quan)与辐射桁架安(an)装(zhuang)(zhuang)完成后开(kai)始进(jin)行(xing)(xing)拉(la)(la)(la)杆(gan)(gan)的安(an)装(zhuang)(zhuang),拉(la)(la)(la)杆(gan)(gan)两端通过耳板(ban)使用(yong)销轴与鼓圈(quan)、辐射桁架的两端分(fen)别进(jin)行(xing)(xing)连(lian)接(jie),两根(gen)圆钢通过对(dui)丝(si)套筒进(jin)行(xing)(xing)连(lian)接(jie)形成拉(la)(la)(la)杆(gan)(gan),拉(la)(la)(la)杆(gan)(gan)在对(dui)丝(si)套筒连(lian)接(jie)时一定要张紧。

(4)在(zai)(zai)整(zheng)个模块化刚性滑(hua)模平台的(de)鼓圈、辐(fu)射桁(heng)架(jia)、拉杆安(an)装完毕(bi)后进(jin)行(xing)环(huan)向(xiang)(xiang)支(zhi)撑(cheng)的(de)拼装,环(huan)向(xiang)(xiang)支(zhi)撑(cheng)使(shi)用煨弯(wan)的(de)槽钢通过连接板使(shi)用普通螺栓来进(jin)行(xing)拼接,环(huan)向(xiang)(xiang)支(zhi)撑(cheng)由内向(xiang)(xiang)外依次安(an)装,使(shi)用 U 形卡扣(kou)连接方式把(ba)槽钢固定在(zai)(zai)每榀桁(heng)架(jia)的(de)上(shang)下弦。

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结(jie)论

本文参考(kao)模块(kuai)化(hua)技术,提出一种筒仓模块(kuai)化(hua)刚性滑模平台(tai)。运用(yong)有限元软件SAP2000 建立了整体平台(tai)模型,对(dui)平台(tai)整体结构进行了加载分析和优选(xuan)杆件截面,同时运用(yong)有限元软件 ABAQUS 对(dui)复杂

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