土木工程学报模板下载网站

xianla198501

2小时前发布

Dynamic Interaction of Long Suspension Bridges with Running Trains Journal of Sound and Vibration SCI、EI[1] Dynamic Analysis of Train-Bridge System and Its Application in Steel Girder Reinforcement，Journal of Computers & Structures，SCI，2001[2] Dynamic behavior of high-speed railway tracks Proceedings of ICTTS，EI，2001[3] Dynamic analysis of train-bridge system under random excitations，Stochastic，Structural Dynamics，ISTP，1998[4] Dynamic responses of railway bridges under high speed trains，Advances in Structural Dynamics，ISTP，1995[5]Experimental study on train-induced vibrations of environments and buildings，MCCI2000，ISTP[6] Traffic-induced vibrations and their influences on surrounding environments，MCCI2000，ISTP，2000[7] Vibration Effects of Light-Rail Train-Viaduct System on Surrounding Environment，I Journal of Structural Stability and Dynamics，2002[8] 车桥耦合系统在随机激励下的动力分析及其应用,工程力学,2002[9] 大跨度悬索桥在风与列车荷载同时作用下的动力响应分析,铁道学报,2002[10] 单室薄壁箱梁考虑偏载影响的活载加载计算分析,土木工程学报,2004[11] 车桥耦合系统在随机激励下的动力分析及其应用,工程力学V20, N3,5[12]Experimental Analysis of High Speed Railway Bridge Under Thalys Trains,Jf Sound & Vibration, 2003 (268), 103-113,SCIEI,10[13]Dynamic Analysis of High Speed Railway Bridge Under Articulated Trains,J of Computers & Structures, 2003 (81), 2467-2478,SCI,10[14] Traffic-Induced Environmental Vibrations and Their Influences on Surrounding Buildings, JSEV,230-241,ISTP,10[15] Problems of railway bridges induced by raising train speed and their treatment,ISSST,EI、ISTP,10[16] Traffic Induced Vibrations in Permafrost Environment of Reshui Coal Mining Site, Permafrost Engineering,ISTP,8[17] Vibration effects of light-rail train-viaduct system on surrounding environments, EASTS, ISTP,10[18] Characteristics of traffic induced vibrations and their effects on environments, TIVC, ISTP, 12[19] Dynamic response of train-suspension bridge under high wind action,TIVC,ISTP,12[20]Traffic-induced ground vibrations and their influences on nearby buildings,Life and Environment,ISTP,9[21]Dynamic Response of Suspension Bridge to high Wind and Running Train, J Bridge E, ASCE V8,N8,1[22]提速列车作用下上承式钢板梁受迫振动实验研究,工程力学V19, N5,10[23]Dynamic Experiment and Analysis of A High Speed Railway Bridge Under Thalys Trains, JSEV, 392-401,ISTP,10[24] Dynamic Analysis Of Cable-Stayed Bridge Subjected To Running Trains And Earthquakes, JSEV, 242-251,ISTP,10[25] Safety and serviceability analysis of high speed railway bridge under thalys trains, ISSST,EI、ISTP,10[26] Dynamic responses of Wuhan Tianxingzhou long Suspension Bridge Scheme under running trains,ISSST,EI、ISTP,10[27] Effect of running train induced vibrations on permafrost environment,ISSST,EI、ISTP, 10[28] Controlling approaches of traffic induced environmental and structural vibrations, ISSEYE,ISTP,10[29] Vibration analysis of Tianxingzhou long span suspension bridge scheme, ISSEYE, ISTP,10[30] Dynamic responses of train-bridge system under earthquakes,TIVC,ISTP,12[31] Seismic response of continuous lame bridges considering constraint torsion effect,TIVC,ISTP,12[32] 车辆与结构动力相互作用（第一版），科学出版社，2002，夏禾，张楠著[33] 车辆与结构动力相互作用（第二版），科学出版社，2005，夏禾，张楠著[34] 直线电机轮轨交通高架结构，中国科学技术出版社，2010，夏禾，郭薇薇，陶毕莲著[35] 交通环境振动工程，科学出版社，2010，夏禾等著[36] HXia, G De Roeck and Jose M G Bridge Vibration and Control [M] NewYork: Nova science publishers, inc, [37] Traffic Induced Environmental Vibrations and Controls: Theory and Application [M] NewYork: Nova science publishers, inc,

宝妈妈爱吃醋

6小时前发布

摘　要:结合广州地铁四号线琶—仑盾构区间土建工程始发站的施工,为确保大体积现浇砼的施工安全,通过论证采用钢管脚手架搭设满堂红支撑排架平台,供现浇砼施工铺设模板,保证现浇砼施工过程的安全,由此说明在建筑工程施工过程中,重视技术措施为安全生产起到了重要的作用。关键词:建筑施工;高支模;混凝土;钢管脚手架 1 概述建筑工程施工中,大体积现浇砼构件的施工经常见到,其特点是浇筑块体积大、底部空间较高,对模板体系的安全稳定要求高,在建设管理中要求有专项设计方案。高支模大体积砼施工一旦发生坍塌事故,必将造成重特大安全伤亡事故,应当引起施工人员的高度重视。为防止重大安全事故的发生,除了认真做好安全生产1 纵向方木截面强度核算方木按照均布荷载下三跨连续梁计算。1 荷载的计算按《钢筋砼工程施工规范》规定计得: (1)钢筋混凝土板自重:q11=5kN/m; (2)模板、方木的自重线荷载:q12=105kN/m; (3)活荷载:q22=9kN/m; 最后组合得:静荷载q1=126kN/m,活荷载q2=26kN/m,q=386kN/m。2 方木的截面强度核算: 查《建筑结构静力计算手册》,计算如下: 最大弯矩M=1q12=509kN·m; 最大剪力Q=6q1=362kN; 最大支座力N=1q1=997kN;2 横向方木截面强度核算方木按照均布荷载下三跨连续梁计算。1 荷载的计算按《钢筋砼工程施工规范》规定计得: (1)钢筋混凝土板自重:q11=5kN/m; (2)模板的自重线荷载:q12=245kN/m; (3)活荷载:q22=1kN/m 最后组合得:静荷载q1=29kN/m,活荷载q2=94kN/m,q=23kN/m。2 方木的截面强度核算查《建筑结构静力计算手册》,计算如下: 最大弯矩M=1q21=187kN·m 最大剪力Q=6q1=18kN 最大支座力N=1q1=657kN 方木的截面力学参数:W=33cm3;I=33cm4 最大变形f=13mm<[f]=8mm,符合要求。3 钢管支撑立杆的稳定性核算立杆采用 48×5脚手管:A=89cm2;W=08cm3;i=58cm,选用水平投影面积7×7m2计算得: (1)静荷载: ①自重:NG1=088kN; ②模板的自重:NG2=368kN; ③钢筋混凝土楼板自重:NG3=25kN 合计:NG=706kN (2)活荷载按《钢筋砼工程施工规范》要求计得:NQ=47kN; (3)立杆的轴向压力按式N=2NG+4NQ计算得N=505kN; (4)立杆的稳定性在同时考虑垂直荷载和风荷载作用时,按下式:4 立杆地基承载力的核算因为立杆是支承在已经浇筑的砼地板上,所以立杆地基承载力能满足要求。4 钢管扣件式支撑排架的搭设1 支撑排架搭设流程立杆定位放线→铺设底座(垫板)→放置立杆→放置扫地杆→第一步纵向水平杆→第一步横向水平杆→如此重复往上→设置剪刀撑→放置顶插、方木和模板→检查、验收。2 支撑排架搭设的构造要求 (1)支撑排架的立杆、纵向水平杆、横向水平杆、剪刀撑、扣件、立杆底部垫板和立杆顶托等均必须符合《建筑施工扣件式钢管脚手架安全技术规范》要求; (2)钢管:采用 48×5脚手管,弯曲变形、锈蚀钢管不得使用; (3)扣件:可锻铸件制作,材质符合《钢管脚手架扣件》(GB15831)的规定,分直角扣件、旋转扣件、对接扣件; (4)方木:10cm×10cm×300cm;14cm×14cm×400cm,有腐烂或变形弯曲的,不得使用。5 结束语