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The “Tiangong” Chinese Space Station project

Yang HONG

《工程管理前沿（英文）》 2018年第5卷第2期页码 278-283 doi: 10.15302/J-FEM-2018202

关键词： manned space station space station project basic design

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Comparison of shallow tunneling method with pile and rib method for construction of subway station in

Sina AMIRI; Ali Naghi DEHGHAN

《结构与土木工程前沿（英文）》 2022年第16卷第6期页码 704-717 doi: 10.1007/s11709-021-0746-4

摘要： In the present study, a comparison between the new shallow tunneling method (STM) and the traditional pile and rib method (PRM) was conducted to excavate and construct subway stations in the geological conditions of Tehran. First, by selecting Station Z6 located in the Tehran Subway Line 6 as a case study, the construction process was analyzed by PRM. The maximum ground settlement of 29.84 mm obtained from this method was related to the station axis, and it was within the allowable settlement limit of 30 mm. The acceptable agreement between the results of numerical modeling and instrumentation data indicated the confirmation and accuracy of the excavation and construction process of Station Z6 by PRM. In the next stage, based on the numerical model validated by instrumentation data, the value of the ground surface settlement was investigated during the station excavation and construction by STM. The results obtained from STM showed a significant reduction in the ground surface settlement compared to PRM. The maximum settlement obtained from STM was 6.09 mm as related to the front of the excavation face. Also, the sensitivity analysis results denoted that in addition to controlling the surface settlement by STM, it is possible to optimize some critical geometric parameters of the support system during the station excavation and construction.

关键词： shallow tunneling method pile and rib method ground surface settlement subway station construction numerical modeling

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二滩水电站——本世纪建成的我国最大的水电站

黄新生

《中国工程科学》 1999年第1卷第1期页码 86-86

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Understanding the demand predictability of bike share systems: A station-level analysis

《工程管理前沿（英文）》页码 551-565 doi: 10.1007/s42524-023-0279-8

摘要： Predicting demand for bike share systems (BSSs) is critical for both the management of an existing BSS and the planning for a new BSS. While researchers have mainly focused on improving prediction accuracy and analysing demand-influencing factors, there are few studies examining the inherent randomness of stations’ observed demands and to what degree the demands at individual stations are predictable. Using Divvy bike-share one-year data from Chicago, USA, we measured demand entropy and quantified the station-level predictability. Additionally, to verify that these predictability measures could represent the performance of prediction models, we implemented two commonly used demand prediction models to compare the empirical prediction accuracy with the calculated entropy and predictability. Furthermore, we explored how city- and system-specific temporally-constant features would impact entropy and predictability to inform estimating these measures when historical demand data are unavailable. Our results show that entropy of demands across stations is polarized as some stations exhibit high uncertainty (a low entropy of 0.65) and others have almost no check-out demand uncertainty (a high entropy of around 1.0). We also validated that the entropy and predictability are a priori model-free indicators for prediction error, given a sequence of bike usage demands. Lastly, we identified that key factors contributing to station-level entropy and predictability include per capita income, spatial eccentricity, and the number of parking lots near the station. Findings from this study provide more fundamental understanding of BSS demand prediction, which can help decision makers and system operators anticipate diverse station-level prediction errors from their prediction models both for existing stations and for new ones.

关键词： bike share systems demand prediction prediction errors machine learning entropy

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Seismic responses of subway station with different distributions of soft soil in Tianjin

Dejian YANG,Meiling DUAN

《结构与土木工程前沿（英文）》 2014年第8卷第2期页码 187-193 doi: 10.1007/s11709-014-0252-z

摘要： In connection with the practical project of Kunming Road station of Tianjin subway Line 3, the paper established a two-dimensional finite element model with visco-elastic boundary by using ANSYS and analyzed seismic responses of subway station with different distribution of soft soil. The nonlinear dynamic properties of soft soils are modeled by the KINH. And obtain the response rules about displacement and internal force on subway station in the general field soil and five different distributions of soft soil. Provide reference for improving the seismic performance of subway stations in Tianjin soft soil.

关键词： distribution of soft soil soft soil in Tianjin seismic response ANSYS

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Technology improvements and management innovations in construction of Xiluodu hydropower station on Jinsha

Qixiang FAN

《工程管理前沿（英文）》 2017年第4卷第2期页码 231-237 doi: 10.15302/J-FEM-2017103

摘要： Hongtao ZHOU, Hongwei WANG, Wei ZENG. [J]. Front. Eng, 2018, 5(1): 78-87.Peter REDFERN, Hua ZHONG. [J]. Front. Eng, 2017, 4(2): 193-200.Ming-zhou Liu,Cong-hu Liu,Mao-gen Ge,Yuan Zhang,Qing-hua Zhu. [J]. Front. Eng, 2016, 3(2): 144-146.Chong-guang Feng,Hao Hu,Feng Xu,Jian Yang. [J]. Front. Eng, 2015, 2(2): 178-181.Yu Zhao,Sheng-quan Wang,Ke-chao Zhu. [J]. Front. Eng, 2015, 2(1): 35-38.Ru-gui Chen,Jia-meng Chen. [J]. Front. Eng, 2014, 1(1): 52-61.An Wang. [J]. Front. Eng, 2014, 1(1): 13-17.

关键词： super-high arch dam intelligent construction mass concrete temperature control structure behavior control anti-erosion concrete low-heat portland cement large-discharge and high-velocity spillway tunnels large scale underground powerhouse green hydropower station sustainable development Xiluodu hydropower station

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Design of a shaking table test box for a subway station structure in soft soil

YANG Linde, ZHENG Yonglai, ZHANG Dongliang, JI Qianqian, YANG Chao

《结构与土木工程前沿（英文）》 2007年第1卷第2期页码 194-197 doi: 10.1007/s11709-007-0022-2

摘要： A reasonable choice of structure of a model box is significant for a shaking table test to be successful in geotechnical engineering. A model box has been designed for the shaking table test of a subway station structure in the soft soil of Shanghai in the paper. The reasonable geometric similarity scale of the subway station structure has been determined by a 3-D dynamic analysis under the action of lateral equivalent static loading. The shape, size and structure of the model box are chosen by considering all the involved factors comprehensively. The shape of the box is similar to that of a typical station structure, and the ratio between the plane dimension of the model ground and that of the model structure is big enough to reduce the influence of boundary condition effectively. The structure is strong enough to avoid being demolished by shaking during a test. The contact conditions between the model soil and box are clear to help the data gained from the test well fit that from numerical analysis. The total weight of the model soil and box is less than the bearing capacity of the shaking table apparatus and there is no resonance between the model soil and box. The results show that the model box can be used to simulate the dynamic response of a subway station structure very well, so it provides a firm foundation for the success of the shaking table test of a subway station structure.

关键词： geotechnical engineering numerical analysis weight dynamic analysis Shanghai

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绿色铁路客站评价标准研究

郑健

《中国工程科学》 2012年第14卷第12期页码 41-47

摘要：

通过对国家政策导向、行业发展需求和国内外绿色建筑评价体系的调研，以第三代绿色建筑评价体系为基础，研究建立了一套完整的适用于不同气候区和各种规模客站的绿色铁路客站评价标准。这一标准的完成丰富了我国绿色建筑评价标准体系，填补了国内外绿色铁路客站领域评价标准的空白，将对促进我国铁路系统的绿色建筑发展起到重要推动作用。

关键词：铁路客站绿色建筑评价标准指标体系

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Numerical study on the seismic response of the underground subway station- surrounding soil mass-ground

Guobo WANG, Mingzhi YUAN, Xianfeng MA, Jun WU

《结构与土木工程前沿（英文）》 2017年第11卷第4期页码 424-435 doi: 10.1007/s11709-016-0381-7

摘要： Ground buildings constructed above metro station have increased very quickly due to the limited land resources in urban areas. In this paper, the seismic response of the Underground subway station-Surrounding soil mass-Ground adjacent buildings (USG) system subjected to various seismic loading is studied through numerical analysis. The numerical model is established in terms of the calculation domain, boundary condition, and contact property between soil and structure based on the real project. The reciprocal influence between subway station and ground adjacent building, and their effects on the dynamic characteristics of surrounding soil mass are also investigated. Through the numerical study, it is found that the impact of underground structure on the dynamic characteristics of the surrounding soil mass depends on its own dimension, and the presence of underground structure has certain impact on the seismic response of ground adjacent building. Due to the presence of underground structure and ground adjacent building, the vertical acceleration generated by the USG system cannot be ignored. The outcomes of this study can provide the references for seismic design of structures in the USG system.

关键词： underground subway station ground adjacent building seismic response

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Key technical innovations in the construction of Baihetan Hydropower Station Project

《工程管理前沿（英文）》 2023年第10卷第2期页码 367-372 doi: 10.1007/s42524-023-0253-5

摘要： Key technical innovations in the construction of Baihetan Hydropower Station Project

关键词： ultra-high arch dam columnar jointed basalt low-heat cement concrete temperature controlled crack prevention million-kilowatt unit intelligent construction

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新能源应用安全风险防控战略框架研究

孙旭东 ,徐小宇 ,罗魁 ,张博 ,杨毅 ,刘梓壮 ,彭苏萍

《中国工程科学》 2023年第25卷第6期页码 179-190 doi: 10.15302/J-SSCAE-2023.07.033

摘要：

新能源大规模应用是实现“双碳”战略目标的主要途径，开展新能源应用安全风险防控战略研究有助于新能源应用安全监管、风险防控与保障体系建设，推动新能源相关产业高质量发展。当前我国新能源应用涉及的新兴基础设施类型多样，面临着安全事故成因复杂、安全风险认知仍不充分、安全防控技术体系不完备、安全监管制度建设滞后等现实问题。本文从我国新能源应用发展现状与安全形势分析出发，剖析了充 / 换电站、储能站、加氢站、综合能源站等新能源应用基础设施面临的安全风险防控问题，总结了国外相关安全风险防控的现状与经验启示；围绕建立新能源应用安全事故前、中、后立体防控与保障体系，加强各利益相关方的安全风险管理与监管能力两大防控目标，构建了新能源应用安全风险防控战略框架，明确了管理与技术两个维度的重点任务以及中长期工程科技支撑项目。进一步提出了顶层设计、治理标准、监管平台、技术研发、人才培养、共建生态等发展建议，以增强新能源应用安全的研究与应用水平。

关键词：新能源应用；风险防控；战略框架；充 / 换电站；储能站、加氢站、综合能源站

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Trend detection and stochastic simulation prediction of streamflow at Yingluoxia hydrological station

Chenglong ZHANG,Mo LI,Ping GUO

《农业科学与工程前沿（英文）》 2017年第4卷第1期页码 81-96 doi: 10.15302/J-FASE-2016112

摘要： Investigating long-term variation and prediction of streamflow are critical to regional water resource management and planning. Under the continuous influence of climate change and human activity, the trends of hydrologic time series are nonstationary, and consequently the established methods for hydrological frequency analysis are no longer applicable. Five methods, including the linear regression, nonlinear regression, change point analysis, wavelet analysis and Hilbert-Huang transformation, were first selected to detect and identify the deterministic and stochastic components of streamflow. The results indicated there was a significant long-term increasing trend. To test the applicability of these five methods, a comprehensive weighted index was then used to assess their performance. This index showed that the linear regression was the best method. Secondly, using the normality test for stochastic components separated by the linear regression method, a normal distribution requirement was satisfied. Next, the Monte Carlo stochastic simulation technique was used to simulate these stochastic components with normal distribution, and thus a new ensemble hydrological time series was obtained by combining the corresponding deterministic components. Finally, according to these outcomes, the streamflow at different frequencies in 2020 was predicted.

关键词： Monte Carlo nonstationary trend detection streamflow prediction decomposition and ensemble Yingluoxia

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工程管理改革的成功实践——广州抽水蓄能电站建设经验探讨

罗绍基

《中国工程科学》 2000年第2卷第11期页码 52-59

摘要：

装机容量为240×10⁴kW的广州抽水蓄能电站（简称广蓄电站）已于今年3月全部建成投产，它是当今世界上装机规模最大的抽水蓄能电站。文章结合广蓄电站建设管理改革的成功实践，从管理体制、建设管理，运行管理和经营管理四个方面对管理改革进行了论述。由于管理改革的成功实践，使得电站建设取得了投资省、速度快、质量好、效益髙、环境美的成果。

关键词：抽水蓄能电站管理改革

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三峡工程电站设计

周述达,谢红兵

《中国工程科学》 2011年第13卷第7期页码 78-84

摘要：

利用物理模型和数值模拟技术，系统研究了三峡电站布置、排沙及排漂措施、进水口形式、机组蜗壳埋设方式，以及地下电站洞室群布置、块体加固等技术问题。研究表明，三峡电站采用两岸坝后厂房+右岸地下厂房的布置及单孔小孔口进水口体型技术经济最优，采用分散排沙和排漂孔可较好解决电站的泥沙和漂污问题，蜗壳采用保温保压、垫层及组合埋设技术均可保证机组稳定运行，采用新型变顶高尾水洞优于设置尾水调压室。同时提出了与蜗壳埋设方式相关的技术标准，并对大型不利块体的加固进行了探讨，提出了利用阻滑键及结构面法向压应力加固块体的新思路。

关键词：三峡电站布置排沙排漂蜗壳埋设浅埋块体加固

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高铁客站建设动态互动管理理论研究

郑健

《中国工程科学》 2011年第13卷第8期页码 31-35

摘要：

高速铁路及其客站建设是我国经济社会持续发展的必然产物，其建设与运营将促进区域经济一体化及都市圈和经济带的形成与发展，从而为经济社会发展提供动力与支撑。党的十六大以来，伴随着中国高铁的快速发展，高铁客站迎来了难得的发展机遇。截至2011年3月，共建成北京南、武汉、广州南、上海虹桥等139座高铁客站。笔者分析了高铁客站与经济社会发展之间的互动关系，结合大规模高铁客站建设实践，研究提出了以经济社会发展演化规律为指导的战略、项目集与项目的动态互动模型和管理理论，为科学制定我国高铁客站建设的战略目标体系及项目集、单项目管理提供了理论依据。

关键词：高铁客站经济社会项目集动态互动管理