钢波纹涵管在水电站砂石加工系统的应用

在水电站建设的砂石加工系统中,成功探索了采用金属波纹管廊道替代钢筋混凝土廊道。由于波纹管重量轻、耐久性好、可现场拼装,用于廊道时受气候条件、混凝土凝期、施工场地等影响小,安装完成后可快速回填形成料仓平台,且金属波纹管可回收重复利用。实践证明,金属波纹管廊道施工成本低,工期短,有不错的应用前景。

公路钢波纹涵管

在新时期的背景下,公路施工技术和方法都得到了巨大的进步。在过去,有拱涵、管涵、板涵、箱涵,它们都各有优点。为了解决大跨径涵洞的快速施工问题,人们又研究出一种涵洞,就是钢波纹涵管,本文对公路钢波纹涵管的优、缺点及工艺流程等做出深入介绍。

钢制波纹涵管施工应用技术

钢制波纹涵管具有优良的力学性能,且安装方便,耐久性好,可以解决因地基基础不均匀沉降导致的涵洞破坏问题。文章以施工实践为基础,对钢制波纹涵管的施工要求、施工工艺、施工控制技术及现场检测进行了介绍。

拼装式钢波纹管在某高速公路中的应用研究

拼装式钢波纹管涵通过设置级配碎石与粗砂的组混结构的基础垫层,形成稳定密实与板结良好的组混柔性地基,并采取"化整为零、化零为整"的两个施工步骤及方法,在已设置好的柔性地基上按分节逐块进行组拼而形成整体的钢纹管涵。本文通过某高速公路钢波纹管涵施工实例的分析,总结了施工工艺流程及操作要点,探讨了钢波纹管涵的发展前景,以及公路工程建设中的经济适用性及优点。

钢波纹管涵在安哥拉U-M项目中的应用

钢波纹涵管具有工期短、重量轻、安装方便、耐久性好、工程造价低、抗变形能力强、减少通车后养护成本等特点,尤其应用在高寒冻土地区,软土路基地带,具有明显的经济效益。

Study on dynamic response of embedded long span corrugated steel culverts using scaled model shaking table tests and numerical analyses

A series of scaled-model shaking table tests and its simulation analyses using dynamic finite element method were performed to clarify the dynamic behaviors and the seismic stability of embedded corrugated steel culverts due to strong earth-quakes like the 1995 Hyogoken-nanbu earthquake. The dynamic strains of the embedded culvert models and the seismic soil pressure acting on the models due to sinusoidal and random strong motions were investigated. This study verified that the cor-rugated culvert model was subjected to dynamic horizontal forces (lateral seismic soil pressure) from the surrounding ground, which caused the large bending strains on the structure; and that the structures do not exceed the allowable plastic deformation and do not collapse completely during strong earthquake like Hyogoken-nanbu earthquake. The results obtained are useful for design and construction of embedded long span corrugated steel culverts in seismic regions.