武汉市长丰低闸施工期安全监测资料分析

对武汉市长江烂泥湖堤长丰低闸重建施工期间的安全监测资料进行了分析。重点分析了闸过水箱涵的结构缝开合、不均匀沉降等变形监测量变化特征及发展趋势 ,并由此对长丰低闸在施工期的安全状态进行了评判     

苏州河河口水闸工程设计特色

在简要介绍苏州河河口水闸工程设计背景及工程概况基础上,从闸址选择、工程标准与规模论证、闸门门型选择、总体结构方案论证、施工组织设计、环境保护、工程效益论证等各方介绍了工程设计特色,并从满足多功能要求基础上介绍了水工、机电与金属结构方面设计存在的难点,从而为今后同类工程设计提供参考。     

曹娥江大闸结构耐久性设计

本文通过曹娥江大闸耐久性设计介绍,探讨有关措施对提高结构耐久性的作用,为了达到设计寿命100年的目标,主要采取了结构合理分缝、适当加大保护层厚度、高性能混凝土、预应力钢绞线、环氧涂层钢筋、施工期混凝土裂缝控制、水位变动区大块石护砌等措施.     

闸坝调度对水质改善的可调性研究

以沙颖河干流上的槐店闸为代表性闸坝,提出一套闸坝调度对河流水质改善的可调性评估技 术方法。其内容包括:首先,对闸坝调度改善水质状况的可调性的概念及其内涵进行了界定;为了定 量评估闸坝可调性,进一步研制了闸坝调度影响模型(考虑闸坝及底泥影响的一维水动力和水环境模 型)和闸坝可调性的评价指标和评价方法;然后将以上方法应用于槐店闸,对槐店闸改善河流水质的 可调性进行了识别。     

Experimental analysis of combined side weir-gate located on a straight channel

Flow measurement and control in open channel system for lateral flow is important to support the system management. The flow characteristics of combined side weir-gate are complicated due to changes in flow conditions along the side weir-gate section. Experimental investigation of the flow characteristics of both weir and sluice gates is crucial for predicting the flow through a combined side weir-gate structure. Although weir-gate structures are widely used for frontal flow in hydraulic structures, the same is not true for lateral flows. In this study, 650 laboratory tests were conducted to determine the flow characteristics of combined side weir-gate for subcritical flow, and the experimental results were analyzed to determine the effect of these characteristics and weir-gate geometry on discharge capacity. Interaction factor of combined side weir-gate is a function of the upstream Froude number, the ratio of gate opening to upstream flow depth, the ratio of distance between the top of the sluice gate and the weir crest to gate opening, the ratio of weir and gate length to upstream flow depth, and the ratio of weir and gate length to main channel width. Consequently, more discharge is passed through combined side weir-gate compared to side weir and sluice gates. The empirically derived equations for the discharge of combined side weir-gate show good compatibility with the experimental data.     

团结水闸除险加固工程施工导流设计

根据团结水闸属Ⅱ等大（2）型水闸工程,结合闸址水文气象、地形地质条件和工程布置特点,本文介绍了水闸施工导流设计方案,并分析采用分期导流方式的原因及其优点,为类似水闸的导流设计提供参考.     

双头加气振冲挤密法在砂质粉土地基处理中的应用

本文介绍了双头加气振冲施工法在宁波杭州湾新区慈溪十二塘围涂工程四灶浦十二塘水闸地基加固施工中的应用,对双头加气振冲挤密施工控制要点进行总结,为类似工程施工提供借鉴经验。     

桩基施工对向阳闸防渗墙应力变形影响研究

根据三维弹塑性应力应变仿真数值计算分析各种施工工况条件下防渗墙应力应变变化等特征,分析评价桥梁桩基施工对向阳闸防渗墙稳定的影响。结果表明:防渗墙的上下游两侧同步进行施工,由河床中心向两岸逐步施工对防渗墙影响较小,水平变形仅为3 mm,最大沉降为8 mm,防渗墙上下差异沉降仅为0.2 mm,对防渗墙安全影响较小。     

曹娥江大闸工程建设关键技术研究与实践

曹娥江大闸枢纽工程地处钱塘江河口,建闸面临闸下淤积、强涌潮、海水侵蚀,软土地基沉降等一系列关键技术问题。本文从如何开展科技创新工作,解决上述问题进行了探索,旨在为强涌潮、多泥沙河口建闸提供借鉴。