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Lifting installation and prestressed cable construction of suspendome roof for Wuhan Gymnasium

GUO Zhengxing, SHI Kairong, LUO Bin, TIAN Qiliang, WU Julong, BI Shuiyong

《结构与土木工程前沿（英文）》 2008年第2卷第1期页码 87-92 doi: 10.1007/s11709-008-0005-y

摘要： The steel roof of Wuhan Gymnasium is a long-span suspendome structure system. According to the structural characteristics of the roof, the lifting installation of upper latticed shell and the installation and tension of lower prestressed cables are introduced in detail. The cable tension is completed successfully on June 27, 2006, while the test results of cable forces and structural deformation are comparatively consistent with the theoretical analysis results. Moreover, Strut-adjustment Method is innovated and applied successfully in the construction of long-span suspendome structure for the first time, and the theoretical and practical experiences can be used for the research and application of similar new-type spatial structures.

关键词： practical new-type installation consistent Gymnasium

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三峡升船机平衡重系统安装技术

蔡春华,罗彬

《中国工程科学》 2013年第15卷第9期页码 70-76

摘要：

针对三峡升船机平衡重系统安装要求并结合现场综合环境，对三峡升船机平衡重系统安装技术进行研究。提出了适宜三峡升船机平衡重系统安装的总体程序，并分别对总体程序中的平衡链导向装置安装、平衡滑轮组安装、主提升钢丝绳安装和平衡重组安装等子工序提出了详细的施工流程以及施工方法，建立了一套完整的升船机平衡重系统安装技术体系。该项施工技术有效解决了三峡升船机平衡重系统安装过程中面临的工程规模大、构件尺寸质量大、技术精度要求高、安装高程高、施工难度大、施工点多面广和施工现场条件复杂等技术难点，为国内外类似工程实践提供了很好的参考。

关键词：三峡升船机平衡重系统安装程序安装技术

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Experimental and modeling studies on installation of arc sprayed Zn anodes for protection of reinforced

Xianming SHI

《结构与土木工程前沿（英文）》 2016年第10卷第1期页码 1-11 doi: 10.1007/s11709-016-0312-7

摘要： Arc sprayed zinc (Zn) anode on concrete surfaces has been an emerging technology for protecting reinforced concrete structures from rebar corrosion in coastal environments. Many cathodic protection (CP) systems with arc sprayed Zn anodes will reach or exceed their design life in the near future and thus may function improperly or insufficiently, making it necessary to replace the aged anodes. However, prior to this study, little was known about the most effective profile for the concrete surface, for either new concrete or old concrete with existing Zn anodes removed. This work develops criteria to properly prepare the concrete surface before the application of new Zn anode. Experimental studies were conducted both in the laboratory and for a field structure in Oregon. Artificial neural network was used to achieve better understanding of the complex cause-and-effect relationships inherent in the Zn-mortar or Zn–concrete systems and was successful in finding meaningful, logical results from the bond strength data. The goal is to achieve strong initial bond strength of new Zn to concrete, which is essential for long-term performance of the CP system. The results from this case study suggest that it is necessary to adjust the anode removal and surface sandblasting based on the electrochemical age of the existing concrete. In all cases of sandblasting, minimize the exposure of large aggregates (e.g., those bigger than 19 mm in diameter).

关键词： arc sprayed Zn anode replacement reinforced concrete bridge preservation neural networks surface profile

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Energy and economic analysis of a point-focus concentrating photovoltaic system when its installation

C. RENNO, A. PERONE

《能源前沿（英文）》 2021年第15卷第2期页码 384-395 doi: 10.1007/s11708-020-0717-9

摘要： The concentrating photovoltaic (CPV) systems are a promising technology to obtain clean energy. However, these systems are not equally convenient worldwide due to different climatic conditions. The main aim of this paper is to analyze energy and economic performances of a point-focus CPV system for a residential user when its installation site varies. Three locations, Riyadh, Copenhagen, and Palermo, characterized by very different weather conditions are chosen. A model that links the electrical power of a triple-junction (TJ) cell with its temperature and concentrated radiation incident on it is experimentally developed to evaluate the energy performance of the CPV system. A comparison of the three localities for typical winter and summer sunny days indicates that the higher values of the TJ cell temperature are reached in summer, over 70°C at Riyadh, and its electrical power is reduced compared to a winter day. In winter, a TJ cell in Riyadh supplies an electric power of about 20% higher than that in other two cities, while in summer, the maximum power is observed at Copenhagen. On the contrary, the electrical producibility also depends on the sunlight daily hours number during the year. Hence, considering the real distribution of direct normal irradiance (DNI) and the environmental temperature for each locality, a CPV system composed of modules of 90 cells adopted for a residential user is sized. The electric producibility of the CPV system, by varying its module number, is evaluated for different localities together with the optimal number of the modules which is able to maximize the investment profitability.

关键词： CPV system point-focus experimental model energy and economic analysis

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三峡升船机贝雷架安装与拆除技术

刘勇,陈建峡

《中国工程科学》 2013年第15卷第9期页码 77-82

摘要：

三峡升船机塔柱横梁贝雷架支撑体系的安装与拆除属于高空立体交叉作业，而且施工场地狭窄、施工强度大，贝雷架的安装与拆除所受到的施工干扰大，是三峡升船机塔柱施工中的难题之一。本文通过对贝雷架施工作业环境的系统分析，根据不同部位的特点与要求，制定了有针对性的包括施工设备布置、吊装单元划分、吊点设置、各部位拆除方案在内的塔柱横梁贝雷架安装及拆除施工技术体系。该技术体系在三峡升船机贝雷架安装及拆除工程中得到顺利实施，塔柱横梁贝雷架支撑系统的施工进度、施工成本及施工安全均实现了良好的效果，表明该技术方案合理可靠。本文中贝雷架的安装与拆除施工技术体系可为类似条件下的贝雷架安装和拆除施工提供参考借鉴。

关键词：升船机贝雷架安装拆除三峡工程

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海上风电场机组分体安装法及其应用

孙广喜,黄亚新

《中国工程科学》 2010年第12卷第11期页码 53-59

摘要：

对世界各国海上风电场的安装方法进行了归纳分类，分析风机海上分体安装法的工艺流程、装配基地设置的必要性和设置原则，归纳出8种典型的陆上组装方案及主要风机组件的装配工艺；提出一种海上风机潜水船坐底安装法：在潜水船上配置起重机构成风机潜水安装船，作业时潜水安装船潜入海底并坐落于海床，进行风机部件的吊装，该安装法适用于近海风电场建设；最后介绍了潜水船安装法在江苏响水近海风电场试验机组项目中的应用。

关键词：海上风电场陆上组装法分体安装法应用

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三峡升船机齿条、螺母柱安装精度控制措施

魏艳,彭翰林,林凡

《中国工程科学》 2013年第15卷第9期页码 91-96

摘要：

针对三峡升船机齿条、螺母柱安装高精度的技术要求与特点，结合现场综合环境进行了安装方法及安装精度控制要素的详细分析，提出了适宜三峡升船机齿条、螺母柱安装的施工流程和控制措施。在工程实践中，采用基准点检测得到对齿条、螺母柱的精度控制，提出了精加工工艺螺杆配合千斤顶调整的方法作为齿条、螺母柱安装加固措施，解决了齿条、螺母柱安装中面临的各项高精度标准技术难题，为类似工程施工提供了有益的借鉴。

关键词：三峡升船机齿条螺母柱安装控制精度控制

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三峡升船机高精度金属结构埋件安装技术

卫书满,张为明,李辰治

《中国工程科学》 2013年第15卷第9期页码 87-90

摘要：

针对三峡升船机工程金属结构一期及二期埋件的布置特点，并结合现场施工环境，对高精度安装作业进行了详细分析，提出了适宜三峡工程金属结构埋件安装的多种施工方案，并在三峡工程中得到广泛成功应用，解决了施工中埋件变形控制、快速高精度调整定位和高精度测量保障等技术难题，为同类工程的施工提供了借鉴。

关键词：升船机金属结构埋件高精度安装技术三峡工程

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Availability growth models and verification of power equipment

Jinyuan SHI, Jiamin XU

《能源前沿（英文）》 2021年第15卷第2期页码 529-538 doi: 10.1007/s11708-019-0624-0

摘要： The general availability growth models for large scale complicated repairable system such as electric generating units, power station auxiliaries, and transmission and distribution installations are presented. The calculation formulas for the maintenance coefficient, mathematical expressions for general availability growth models, ways for estimating, and fitting on checking the parameters of the model are introduced. Availability growth models for electric generating units, power station auxiliaries, and transmission and distribution installations are given together with verification examples for availability growth models of 320–1000 MW nuclear power units and 1000 MW thermal power units, 200–1000 MW power station auxiliaries, and 220–500 kV transmission and distribution installations. The verification results for operation availability data show that the maintenance coefficients for electric generating units, power station auxiliaries, transmission and distribution installations conform to the power function, and general availability growth models conform to rules of availability growth tendency of power equipment.

关键词： repairable system power equipment electric generating unit power station auxiliary transmission and distribution installation reliability availability availability growth model

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苏通大桥钢箱梁吊装专用设备研究与应用

陈鸣,吴启和,罗承斌,周汉发

《中国工程科学》 2009年第11卷第3期页码 65-70

摘要：

苏通大桥为主跨1 088 m的钢箱梁斜拉桥，钢箱梁分为5部分：辅助跨、边跨及索塔区大块梁段，悬拼标准梁段，边、中跨合龙梁段。大块梁段在工厂组拼，用大型浮吊安装。由于通航净空高，传统桁架结构吊具难以满足国内现有浮吊吊高与吊重要求，所以提出苏通大桥超大、超重钢箱梁节段轻型吊索具结构，并介绍了吊索具设计与使用要点。标准梁段采用桥面吊机悬臂安装。由于主梁节段宽且重，加上桥区恶劣的气象和水文条件，以及斜拉索长索梁端牵引需要，对桥面吊机结构和性能提出了较高要求。介绍了苏通大桥集梁段吊装和拉索安装功能为一体的桥面吊机设

关键词：苏通大桥大块梁段吊索具悬臂拼装桥面吊机设计与使用

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立井井塔建安工程综合施工新技术

杨益明,黄家贫,谌喜华,曹月芹,马智民

《中国工程科学》 2012年第14卷第2期页码 85-89

摘要：

以龙固煤矿1#主井提升系统施工为例，介绍了井塔建筑和井筒装备、提升机等设备安装工程平行作业的施工组织特点以及立井井塔滑模施工、井筒装备采用6层吊盘一次成井安装和永久提升机安装的施工技术，为同类型工程施工提供了一种可借鉴的综合施工应用技术。

关键词：平行作业井塔滑模井筒装备提升机安装施工技术

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海上风电场基础形式及配套施工技术

秦顺全,张瑞霞,李军堂

《中国工程科学》 2010年第12卷第11期页码 35-39

摘要：

根据不同的水深及地质条件，结合已建成的海上风电场基础形式及施工方法，介绍和研究了重力式、单桩、群桩、设置沉箱、沉井及吸力式筒形基础等几种形式。对不同的基础形式，分别提出了自升式平台、浅吃水半潜驳、打桩船及整体浮运吊装等相应的基础施工方法。根据风机机组类型，对塔筒和风机的安装也做了介绍。

关键词：海上风电场基础形式桩基础导管架基础吸力式筒形基础设置沉箱风机安装

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区域定量风险评价方法及其在城市重大危险源安全规划中的应用

吴宗之,多英全,魏利军,关磊

《中国工程科学》 2006年第8卷第4期页码 46-49

摘要：

介绍了区域定量风险评价的基本原理和评价指标，建立了基于网格差分的风险计算模型，给出了定量风险评价的程序，开发了个人风险的计算软件，提出了区域定量风险评价方法，并在某油气库区风险评价与安全规划中实际应用。通过分析计算，给出了该区域的个人风险等值线分布图和社会风险（F-N）曲线。结果表明，由于该地区液化石油气储量大，事故后果严重，且库区离居民区较近，周边企业较多，人口密集，使得个人风险和社会风险均超出了推荐标准的要求。该方法为进行城市重大危险源的安全规划提供了基础理论和技术方法，对进行城市土地使用及其他灾害领域的安全规划具有指导意义。

关键词：风险评价安全规划重大危险源城市规划

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Energy conservation in China’s coal-fired power industry by installing advanced units and organized phasing out backward production

Weiliang WANG, Junfu LYU, Zheng LI, Hai ZHANG, Guangxi YUE, Weidou NI

《能源前沿（英文）》 2019年第13卷第4期页码 798-807 doi: 10.1007/s11708-019-0633-z

摘要： Coal-fired power is the main power source and the biggest contributor to energy conservation in the past several decades in China. It is generally believed that advanced technology should be counted on for energy conservation. However, a review of the decline in the national average net coal consumption rate (NCCR) of China’s coal-fired power industry along with its development over the past few decades indicates that the up-gradation of the national unit capacity structure (including installing advanced production and phasing out backward production) plays a more important role. A quantitative study on the effect of the unit capacity structure up-gradation on the decline in the national average NCCR suggests that phasing out backward production is the leading factor for the decline in the NCCR in the past decade, followed by the new installation, whose sum contributes to approximately 80% of the decline in the national average NCCR. The new installation has an effective affecting period of about 8 years, during which it would gradually decline from a relatively high value. Since the effect of phasing out backward production may remain at a certain degree given a continual action of phasing out backward capacity, it is suggested that the organized action of phasing out backward production should be insisted on.

关键词： coal-fired power energy conservation net coal consumption rate new installation phasing out backward production unit capacity structure

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上海金茂大厦施工技术

叶可明,范庆国

《中国工程科学》 2000年第2卷第10期页码 42-49

摘要：

上海金茂大厦采用钢筋混凝土核心筒与钢结构外框架相结合的混合体系，是当今世界上排名第三高度的大楼。由于上海地区属软土地基，因此金茂大厦的建造有着相当高的难度，尤其是基础与上部结构的施工，上海建工（集团）总公司从实际出发，大力开展科研攻关，在广泛汲取国内外成功经验的基础上，因时、因地制宜，形成了自己独创的施工工艺和严谨的科学管理体系，解决了深基、巨柱和超髙空浇筑与安装等一系列施工难题，仅用4年时间就实现了大厦基本建成的预期目标，创造了世界建筑史上又一新的高速度。

关键词：金茂大厦框一筒结构大口径钢管桩超深地下连续墙可转换整体式自升模板体系钢结构