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本文以某45米垮造桥机为研究对象,利用ANSYS有限元分析软件对其在纵移和开模工况下的强度进行了计算.对该造桥机进行了开模和过孔过程强度检测,检测结果与计算结果基本一致.此研究结果为造桥机设计和施工过程提供了参考. 相似文献
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简要介绍ZQM2150型大跨度重载造桥机,该机已用于九江长江公路大桥东引桥50m跨连续曲线梁施工,实现了大跨度重载混凝土箱梁逐跨原位现浇的施工方法。 相似文献
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应用大型通用结构有限元分析程序SuperSAP对MZ32型900t造桥机进行总体结构有限元力学分析,重点介绍了有限元模型的建立及力学分析的方法和技巧,所得出的结沦具有一定的指导意义. 相似文献
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徐中富 《建设机械技术与管理》2008,21(8)
本文利用大型通用有限元软件ANSYS优化设计模块,对造桥机的高腹板箱形截面主梁进行参数优化设计,在满足刚度与强度设计要求下,以主梁重量为优化目标,优化后的主梁用钢料比原设计少8.75%. 相似文献
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饶守金 《建设机械技术与管理》2011,(9):101-104
本文应用国际上广泛使用的大型通用结构有限元分析程序SuperSAP对460t上行式移动模架造桥机——MZ460S进行总体结构有限元分析,文中详细描述了该机的施工工艺过程,重点介绍了有限元模型的建立,并根据计算结果提出了对原结构进行修改的建议。本文所得出的结论对从事这方面设计和施工的读者具有一定的指导意义。 相似文献
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从理论上对移动车辆在桥梁结构上引起的动力响应进行了分析,并提出了一种应用有限元软件ANSYS来计算在不同车速作用下的桥梁冲击系数的方法,并结合算例验证了该方法的正确性和使用性。 相似文献
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《Structure and Infrastructure Engineering》2013,9(3):328-345
This paper investigated the feasibility of the pseudo-static damage identification method derived from a bridge–vehicle interaction system through a moving vehicle laboratory experiment. The element stiffness index, defined as the ratio of flexural rigidity of a damaged member to that of an intact member, serves as the damage indicator. Three vehicle models and two travelling speeds were considered in the experiment to examine the effect of vehicle's dynamic characteristic and travelling speed on identified results. It is demonstrated that locations and severities of damages are detectable using the proposed method in spite of the probable changes of roadway roughness and environmental conditions. In addition, adopting higher vehicle speed as well as the vehicle with frequency close to that of the bridge increased the probability of detecting damages. 相似文献
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在钢绞线预应力筋用齿合型单孔开口锚具(QMKl5-1锚具)的设计与试验研究中,为满足GB/T14370-2000国家标准和JGJ85-2002行业标准的各项技术要求,进行了解析计算与有限元分析。在此基础上通过设计优化,进一步提高了产品的可靠性与适用性,降低了加工成本。本文详细论述了相关计算分析的方法与结果,可为研制同类产品提供参考。 相似文献
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本文通过相关的计算与试验,以三一重工安装了加热系统的LHZ25C沥青混合料转运车为研究对象,以其在盐通高速公路上施工时的原始温度数据为依据。证明了沥青混合料转运车加热系统能够有效地解决通过其中的沥青混合料的温度下降问题,加热系统的存在是必要的。 相似文献
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本文结合福建山区特点,介绍了RTGPS在架空送电线路工程测量中的应用试验情况,取得了有益的经验。 相似文献
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Three full-scale model experiments were conducted in a unidirectional tube, which is a part of a metro tunnel with one end connected to an underground metro station and the other end opened to outside in Chongqing, PR China. Three fire HRRs, 1.35 MW, 3 MW and 3.8 MW were produced by pool fires with different oil pan sizes in the experiments. Temperature distributions under the tunnel ceiling along the longitudinal direction were measured. At the same time, CFD simulations were conducted under the same boundary conditions with the experiments by FDS 5.5. In addition, more FDS simulation cases were conducted after the FDS simulation results agreed with the experimental results. The simulation results show that the smoke temperature and the decay rate of the temperature distribution under the tunnel ceiling along the longitudinal direction increase as HRR increases. The smoke exhausts effectively from the tunnel under mechanical ventilation system, whether the emergency vent is activated as a smoke exhaust or an air supply vent. The operation mode of the mechanical ventilation system depends on the evacuation route. 相似文献
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介绍PC—NTC型无缝线路铺轨机组的转运龙门起重机走行系统的设计,提出一种满足转运龙门起重机内净空及机车车辆运输限界等要求、在狭窄空间内走行系统的布置方式。 相似文献