Experimental study on seismic performance of tall building with steel transfer trusses located at a higher level

Based on a shaking table experiment of 1 : 25 scale frame-shearwall structure model with steel transfer trusses, the dynamic characteristics, seismic responses in elastic and elastic-plastic phases with de- structive forms of the structure were studied. It was observed that cracks were developed with earthquake wave acceleration increasing, but no severe crack was developed in the structure during the experiment. In the seismic responses caused by artificial wave, site wave and E1 Centro wave, that caused by the artificial wave is the most intense one. Displacement angle between steel transfer trusses is large, which means the transfer stories might be weak. However, the seismic performance of the steel transfer trusses is good and the overall structure can satisfy seismic fortification requirements in the region of intensity 6.     

铁路客车侧墙大板工艺与侧墙小板工艺分析

研究分析了铁路客车侧墙大板工艺与侧墙小板工艺的制造工艺流程。通过两种制造工艺的对比分析可知:侧墙小板工艺流程复杂,配套技术装备投入很大,对原材料的技术要求低,应用的适应性强;而侧墙大板工艺流程简单,配套技术装备投入较少,但对原材料的技术要求较高,应用范围受到限制。两种侧墙制造工艺应并存,以形成互补性很强的工艺布局。     

Development of a nonlinear 3D solid finite element model for the calculation of bending moments of flexural members

A numerical model is developed in this paper to calculate the bending moments of flexural members through integration in 3D solid finite element analyses according to the nonlinear constitutive model of concrete and the elastoplastic constitutive model of steel, utilizing the stress condition of the cross-section, considering the destruction characteristic of reinforced concrete members, and based on the plane cross-section assumption. The results of this model give good agreement with those of the classical method. Consequently, we can also deduce the corresponding numerical expression for eccentrically loaded members according to the analysis method.     

锌铝伪合金涂层系统应用于大型钢结构施工关键点的质量控制

1概述 重庆鱼嘴长江大桥起于广阳镇葵花山庄,在长江南岸石盘凼附近跨越长江,于长江北岸师母滩登陆,跨过榨房附近小山包,止于鱼嘴镇下果园。属单跨双铰简支钢箱悬索桥,大桥全长1438m、宽33m,主跨616m,是重庆市目前两江上单跨最大的桥,也是外环高速控制性工程之一。     

几内亚Simandou矿石码头FEED全钢结构高桩码头设计

介绍了几内亚Simandou矿石码头FEED阶段全钢结构高桩码头的设计,对该结构码头的优势、基本组成、设计内容和方法、关键施工控制点和对应的设计要求等4方面做介绍,并总结了其中的设计经验。     

既有钢结构桥梁病害分析及其防护技术研究

钢结构桥梁具有轻质、高强、跨越能力大、易工厂化制造和便于装配化施工等突出优点,是未来一段时期中国桥梁工程的重要发展方向。钢结构桥梁由于服役环境、荷载条件和交通需求、结构体系和构造细节设计等诸多因素的影响,会导致其在运营过程中,出现种种问题。介绍了既有钢结构桥梁在服役过程中的腐蚀、疲劳、安装隐患等常见病害,分析了病害形成原因,并对当前一些新型病害防护技术的应用进行了分析和探讨,为既有钢结构桥梁病害分析及预防维护提供科学的参考。     

销接钢结构的承载力

销接钢结构的销孔间隙会使结构产生初始的几何,从而使结构的承载力降低,分析了销接钢结构由强度控制时的承载力计算方法,并以六四式军用梁拦组结构为例,给出了结构承载力随结构尺度和销孔间隙的变化规律。     

胜利黄河大桥主塔防腐涂装施工技术研究

钢结构的腐蚀病害是钢结构桥梁常见病害,防腐涂装技术是目前解决钢桥腐蚀的主要措施。钢桥的防腐涂装是高空作业,施工技术和工艺对涂装质量影响较大。东营胜利黄河大桥主桥桥塔呈H形,总高69.6 m,桥塔外侧为钢结构,内侧为钢筋混凝土结构。上塔柱为有索区,中下塔柱为无索区。因桥梁运营时间较长,且受自然环境影响,主塔表面原涂装脱落和锈蚀严重,影响桥塔结构耐久性和外观质量,需对桥塔重新进行防腐处理。本文依托东营胜利黄河大桥主塔防腐涂装工程,为保证桥塔防腐涂装施工质量、提高施工作业安全性,结合桥塔结构特征和所处地理环境,系统总结防腐涂装施工关键工艺,设计出一种封闭的涂装施工平台以减少恶劣天气对施工的不利影响,并提出桥塔防腐涂装的技术要点和注意事项,可为同类高空防腐涂装作业提供借鉴和经验。     

青岛西海岸珊瑚贝桥创意构思与总体设计

青岛西海岸珊瑚贝桥连接西海岸滨海大道和名人岛（人工岛）,功能定位为青岛滨海标志性景观桥梁,桥梁全长290 m,主桥为40 m+70m+70 m+40 m钢结构连续箱梁,梁上设置钢结构空间曲面异形拱,引桥为35 m+35 m钢结构连续箱梁。结合青岛城市文化和桥位环境,通过新颖的创意构思和创新的设计方法,将结构设计和景观设计融为一体,珊瑚贝桥的建成效果达到预期,成为青岛乃至全国的标志性景观桥和网红桥。重点介绍该桥的创意构思理念、总体设计以及钢结构施工情况。     

佛山市某大跨径铝合金人行天桥桁梁结构分析

铝合金作为一种优质的新型桥梁结构材料,具有轻质高强、易养护、低碳环保、施工便捷、景观性强等特点。近年来,铝合金结构在城市人行天桥中已被较多应用,但少有大跨径铝合金人行天桥应用实例。以佛山市禅城区佛山大道（澜石路口）人行天桥为例,详细介绍大跨径铝合金人行天桥上部结构设计。通过MIDAS及3D3S有限元模型,对大跨径铝合金人行天桥上部结构进行选型分析,可为大跨径铝合金人行天桥上部结构设计提供参考。