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How does the improved DB mode degrade the complex integrity of infrastructure mega-projects? Evidence from the Hong Kong-Zhuhai-Macao Bridge project in China

Jinwen ZHANG, Yumin QIU

《工程管理前沿(英文)》 2018年 第5卷 第1期   页码 40-51 doi: 10.15302/J-FEM-2018083

摘要: Complex integrity is one of the main characteristics of infrastructure mega-projects (IMPs). Cost, technology, risk, duration, environmental impact, and other uncertain complexities are interrelated and constitute a challenging and complex management problem. At present, there is no unified understanding of or solutions to these complex integrity problems. This study analyzes the complex integrity of the island-tunnel subproject of the Hong Kong-Zhuhai-Macao Bridge (HZMB) project and proposes an improved design-build (DB) mode in which the owner provides a preliminary design and has the right to form and manage consortium. This improved DB mode creatively degrades the special complexities that arise from multiple dimensions. On this basis, it is an efficacious way to grasp the main contradictions, integrate the effective resources, and degrade the complex integrity in multiple dimensions and at multiple levels so as to effectively deal with the complexity management of IMPs.

关键词: Hong Kong-Zhuhai-Macao Bridge project     island-tunnel subproject     complex integrity     complexity degradation     the general contracting mode of design-build     the design-build consortium    

港珠澳大桥岛隧工程

林鸣, 林巍

《工程(英文)》 2017年 第3卷 第6期   页码 783-784 doi: 10.1016/j.eng.2017.11.003

论本质管理思想 ——基于港珠澳大桥岛隧工程管理实践

林鸣,王孟钧,王青娥,唐娟娟

《中国工程科学》 2019年 第21卷 第2期   页码 103-110 doi: 10.15302/J-SSCAE-2019.02.015

摘要:

新时代促使工程师思考工程建设行业当下的困境和未来的发展趋势,立足实践高屋建瓴地创新管理思想。本文基于港珠澳大桥岛隧工程实践,提出“本质管理”理论构念,从实践和词源两个角度诠释“本质管理”的定义,提出本质管理的三个要素和四个内涵,构建了“本质管理”的思维模型,并以港珠澳大桥岛隧工程为例阐述本质管理的过程及方法体系。本质管理是新时代中国工程管理实践的产物,它以中国管理哲学为本,融合古今中外的先进管理思想,重视“人”的主体地位,强调以辩证和积极的观点看待问题,并充分发挥人的主观能动性和创造力,是一种应对严峻工程挑战的、面向工程实践的、具有创新意义的工程管理方法论,其方法体系具有前瞻性和动态适应性。本质管理体现了“本立道生”的朴素哲学思想,对我国大规模工程建设和工程管理具有十分重要的意义和价值。

关键词: 本质管理思想     中国工程实践     港珠澳大桥岛隧工程     思维模型     管理创新    

桥岛隧组合跨海通道的最新建设技术

葛耀君, 袁勇

《工程(英文)》 2019年 第5卷 第1期   页码 15-21 doi: 10.1016/j.eng.2019.01.003

关键词: 工程成就    

岛上特大城市——隧道系统作为解决交通问题的关键备选方案 Article

Vladimir V. Makarov

《工程(英文)》 2018年 第4卷 第1期   页码 138-142 doi: 10.1016/j.eng.2018.02.001

摘要:
岛上大都市建设的一大关键困难是由有限的岛面用地导致的交通问题—— 公路及停车场地均需布置在已开发完成的岛上。这一限制便造成了公路数量稀少、路面交通拥堵、停车场地有限、车辆停放不规范等现象,容易引起安全事故。符拉迪沃斯托克市位于俄罗斯远东地区穆拉维约夫- 阿穆尔半岛(滨海边疆区)。该市因处在地缘政治要地,所以实际上也是俄罗斯的第三大首府。目前,为解决市内车辆交通问题,同时又考虑到缺少新建公路所需用地,当局就此提议应充分利用海岸沿线的海滩及滨水区域。不过,此项决定却与符拉迪沃斯托克市争创世界一流城市的生态及社会愿景存在明显冲突,且未能吸取世界其他海滨城市的经验教训—— 最初均在地面上修建了滨海公路,但之后又决定斥巨资拆除公路以合理享用滨海区的环境和历史资产。因此,建设一个独立的隧道交通系统及附加的地下停车场,似可作为解决交通问题的另一关键方案。此种方案的优点在于,它既能有效解决交通问题,又能改善该市的生态环境和宜居性。从解决交通问题的实际出发,在对两种方案进行比较后(即“地下”与“地面”的比较),可以看到独立的隧道系统具有多项主要优势。在比较中,我们提出了一套综合的效率评测标准,用以对符拉迪沃斯托克市交通系统方案的变量进行量化评估。经评估,地下方案比地面方案效率高出近1.8 倍。

关键词: 特大城市     交通     隧道     效率     标准    

Avoiding the innovation island in infrastructure mega-project

Hongquan CHEN, Quanke SU, Saixing ZENG, Daxin SUN, Jonathan Jingsheng SHI

《工程管理前沿(英文)》 2018年 第5卷 第1期   页码 109-124 doi: 10.15302/J-FEM-2018073

摘要: Infrastructure mega-project (IMP) innovation is a complex process characterized by highly diverse innovators, a dynamic life-cycle, and stickiness of innovation knowledge. The IMP’s innovation network can be easily broken due to the fact that the network involves many different innovators across different industries and different projects. Further reasons for the fragility of the IMP’s innovation network are the dynamics of the IMP life-cycle, the diversity of the IMP’s innovative entities, the uniqueness of each IMP, and the temporary nature of each IMP’s organizations. The formed by the breaking of an IMP’s innovation network can stifle and harm innovation performance. Drawing from the knowledge-based view as well as innovation network theory, our research identifies the heterogeneous characte- ristics of IMP innovation. We propose a framework to analyze the formation mechanism of the IMP innovation island from three dimensions—the , the , and the . We look at the Hong Kong-Zhuhai-Macao Bridge project to elaborate the innovation island concept that negatively impacts IMP innovation. We also offer theoretical implications regarding the broader question of how IMPs can manage their innovation in practice.

关键词: innovation in mega-infrastructure projects     the diversity of innovation bodies     life-cycle dynamics     the unique and temporary nature of IMPs     innovation island    

Piezoresistive pressure sensor with high sensitivity for medical application using peninsula-island structure

Tingzhong XU, Hongyan WANG, Yong XIA, Zhiming ZHAO, Mimi HUANG, Jiuhong WANG, Libo ZHAO, Yulong ZHAO, Zhuangde JIANG

《机械工程前沿(英文)》 2017年 第12卷 第4期   页码 546-553 doi: 10.1007/s11465-017-0447-9

摘要:

A novel micro-electromechanical systems piezoresistive pressure sensor with a diagonally positioned peninsula-island structure has high sensitivity for ultra-low-pressure measurement. The pressure sensor was designed with a working range of 0–500 Pa and had a high sensitivity of 0.06 mV·V−1·Pa−1. The trade-off between high sensitivity and linearity was alleviated. Moreover, the influence of the installation angle on the sensing chip output was analyzed, and an application experiment of the sensor was conducted using the built pipettor test platform. Findings indicated that the proposed pressure sensor had sufficient resolution ability and accuracy to detect the pressure variation in the pipettor chamber. Therefore, the proposed pressure sensor has strong potential for medical equipment application.

关键词: MEMS     low pressure sensor     peninsula-island     ultra-high sensitivity     medical application    

土质隧道深浅埋界定方法研究

赵占厂,谢永利

《中国工程科学》 2005年 第7卷 第10期   页码 84-86

摘要:

针对现有隧道深浅埋界定方法存在的问题,结合现场测试和数值仿真结果,明确了应从围岩压力性质角度进行深浅埋界定。首次提出了以数值仿真技术为手段,利用拱上中心线土体侧压力系数变化规律为依据进行深浅埋界定的思路,并用2个工程实例进行了验证,新方法对土质隧道衬砌设计和施工有重大意义。

关键词: 土质隧道     深埋和浅埋     界定方法    

Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

《结构与土木工程前沿(英文)》 2023年 第17卷 第4期   页码 522-532 doi: 10.1007/s11709-023-0930-9

摘要: Owing to long-distance advancement or obstacles, shield tunneling machines are typically shut down for maintenance. Engineering safety during maintenance outages is determined by the stability of the tunnel face. Pressure maintenance openings are typically used under complicated hydrogeological conditions. The tunnel face is supported by a medium at the bottom of the excavation chamber and compressed air at the top. Owing to the high risk of face failure, the necessity of support pressure when cutterhead support is implemented and a method for determining the value of compressed air pressure using different support ratios must to be determined. In this study, a non-fully chamber supported rotational failure model considering cutterhead support is developed based on the upper-bound theorem of limit analysis. Numerical simulation is conducted to verify the accuracy of the proposed model. The results indicate that appropriately increasing the specific gravity of the supporting medium can reduce the risk of collapse. The required compressed air pressure increases significantly as the support ratio decreases. Disregarding the supporting effect of the cutterhead will result in a tunnel face with underestimated stability. To satisfy the requirement of chamber openings at atmospheric pressure, the stratum reinforcement strength and range at the shield end are provided based on different cutterhead aperture ratios.

关键词: tunnel face stability     cutterhead configuration     aperture ratio     pressure gradient     support ratio    

一种去除地表水中的磷的浮岛处理系统 Article

Mark T. Brown, Treavor Boyer, R.J. Sindelar, Sam Arden, Amar Persaud, Sherry Brandt-Williams

《工程(英文)》 2018年 第4卷 第5期   页码 597-609 doi: 10.1016/j.eng.2018.08.002

摘要:

本研究旨在设计、建造和测试一个中试规模的浮动模块化处理系统,并用以对美国佛罗里达州中部富营养化湖泊中的总磷(TP)进行去除。该处理系统由生物和物理-化学处理模块组成。用多种底物和水生大型植物组合构建了13种不同的中宇宙实验(mesocosm),分别测试了总磷(TP)和正磷(PO4
3−)的去除率及潜在的区域去除率。此外本研究对7 种吸附介质进行了小型杯罐实验和柱实验,并对3种商业树脂进行了吸附能力的测试。完成这些独立的测试过程后,在佛罗里达中部的一个湖泊中,设计了一个浮岛处理系统(FITS)并运行了8个月。中宇宙实验对磷的平均去除率为40%~50%,平均去除量为5.0 g·m–2·a–1。其中沉水植物(SAV)系统和藻类洗涤器(AGS)效果最好,分别去除了20 mg·m–2·d–1和50 mg·m–2·d–1的磷,它们对磷的平均去除量分别为5.5 g·m–2·a–1和12.0 g·m–2·a–1。在吸附介质中,明矾渣(AR)的性能最佳,接触5 min 后,PO43−浓度降低了75% 左右。在所测试的商品树脂中,PhosX 树脂的去除效果最好,在30 min后去除了约40%的磷,60 min后去除了约60%的磷。在基线运行条件下展开实验,FITS 对PO43−的平均去除率为53%;使用PO43−去除率的第50百分位和第90百分位以及FITS的环境足迹进行评价,结果表明系统的去除率分别为56%和86%;区域磷去除率在8.9~16.5 g·m–2·a–1之间。

关键词: 除磷     湖泊生态系统     浮岛处理    

珊瑚岛礁环境噪声成像 Article

夏少红, 张昌榕, 曹敬贺

《工程(英文)》 2023年 第25卷 第6期   页码 182-193 doi: 10.1016/j.eng.2021.09.022

摘要:

As valuable land in the ocean, coral islands are not only important bases for making use of marine resources and protecting marine rights and interests, but also important for breakthrough research in many fields of earth science. Hence, the economical and efficient determination of the underground structure of coral islands has become significant in coral island engineering geology, but remains challenging for traditional marine geophysical prospecting and drilling methods. While ambient noise tomography with dense arrays has been widely used in continental regions, its applicability to coral islands remains undetermined. In this study, based on the data recorded by a dense array on an isolated coral island in the South China Sea, we analyzed the ambient noise characteristics and obtained a 3D subsurface structure of the coral island using ambient noise tomography. We made the following findings: ① The ambient noise frequencies can be roughly categorized into three levels: < 1, 1–5, and > 5 Hz. The spectral characteristics of the noise below 5 Hz were consistent at different stations, but there were significant differences in the characteristics of the noise above 5 Hz. ② For ambient noise frequencies below 5 Hz, cross-correlation functions with high quality could be obtained with only 24 h of waveform data. However, it was difficult to extract meaningful cross-correlation functions for ambient noise frequencies above 5 Hz. ③ The S-wave velocity in the coral island was higher toward the sea and lower toward the lagoon, which was consistent with the high degree of cementation of the outer reef flat stratum on the seaward side. ④ There were two low-velocity horizons at 25–75 and 200–300 m, which were in good agreement with the high-porosity horizons that were revealed by drilling core samples, reflecting the weathering history of the reef. Our research demonstrates that ambient noise tomography is a potentially economical, efficient, and environmentally friendly method for the geological prospecting of coral reefs.

关键词: Coral island     Ambient noise tomography     Engineering geology     South China Sea    

核电不稳定导致美国政府关闭三哩岛核电站

Mitch Leslie

《工程(英文)》 2020年 第6卷 第1期   页码 4-5 doi: 10.1016/j.eng.2019.11.004

浦东国际机场东移与九段沙生态工程

陈吉余,李道季,金文华

《中国工程科学》 2001年 第3卷 第4期   页码 1-8

摘要:

浦东国际机场东移建在潮滩之上,少占用了土地,却也影响了长江河口的湿地生态环境。上海市非常重视市政工程建设与湿地环境保护的问题,通过在长江河口的九段沙岛实施种青引鸟的生态工程,补偿湿地被占用而失去的生态功能;在九段沙中沙和下沙共引种芦苇(Phragmite communis)和互花米草(Spartina alterniflora)90 hm2。经过3年连续监测,植物种群生长和扩散良好,鸟类数量有所增长,生态工程取得初步成功。

关键词: 生态工程     浦东国际机场     九段沙     长江河口    

Smart construction site in mega construction projects: A case study on island tunneling project of Hong

Hongtao ZHOU, Hongwei WANG, Wei ZENG

《工程管理前沿(英文)》 2018年 第5卷 第1期   页码 78-87 doi: 10.15302/J-FEM-2018075

摘要: The construction sites of mega construction projects (MCP) often have numerous participants with interfacing work within a highly complex system. It is critical how to realize collaborative work and information sharing among such participants. The information and communication technologies (ICTs) provides a technical guarantee for solving this problem. Existing research has been achieved the partial processes digitization of construction site, but certain problems still exist: 1)information perception of the construction site is passive. 2) common collaboration and coordination problems in the construction industry have not been addressed. The emerging trends of ICTs have resulted in the integration of various computer technologies such as CPS, BIM, big data, and cloud computing into construction process, which would changes behavioral and management mode of construction sites. These new ICTs have been applied successfully in MCP, in particular, Hong Kong-Zhuhai-Macao Bridge project. A new management mode of construction sites is inspired by these case. In this paper, a new management mode of construction site for MCP has been proposed, namely, smart construction site. The ultimate goal of smart construction site is to accomplish safe, efficient and high-quality construction. This study put forward the conceptual framework for smart construction site, and have identified three key elements of smart construction site, including information support platform, collaboration work, and intelligent construction management. A case study on Hong Kong-Zhuhai-Macao Bridge project work as an evidence to support the practicability of the proposed mode. Significant contributions of this study is to propose a new management mode for MCP in construction industry, which would enrich the body of knowledge or the construction management community. Future research should be dedicated to further explore the potential of smart construction site in MCP management.

关键词: mega construction projects     smart construction site     information perception     collaborative work     intelligent construction management     information and communication technologies    

Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

《结构与土木工程前沿(英文)》   页码 1033-1046 doi: 10.1007/s11709-023-0973-y

摘要: This study focuses on the bending failure performance of a shield tunnel segment. A full-scale test was conducted to investigate deformation and failure characteristics. During the loading, the bending failure process can be divided into four stages: the elastic stage, working stage with cracks, failure stage, and ultimate stage. The characteristic loads between contiguous stages are the cracking, failure, and ultimate loads. A numerical model corresponding to the test was established using the elastoplastic damage constitutive model of concrete. After a comparative analysis of the simulation and test results, parametric studies were performed to discuss the influence of the reinforcement ratio and proportion of tensile longitudinal reinforcement on the bearing capacity. The results indicated that the change in the reinforcement ratio and the proportion of tensile longitudinal reinforcement had little effect on the cracking load but significantly influenced the failure and ultimate loads of the segment. It is suggested that in the reinforcement design of the subway segment, the reinforcement ratio and the proportion of tensile longitudinal reinforcement can be chosen in the range of 0.7%–1.2% and 49%–55%, respectively, allowing the segment to effectively use the reinforcement and exert the design strength, thereby improving the bearing capacity of the segment.

关键词: shield tunnel     bearing capacity     failure mechanism     segment reinforcement    

标题 作者 时间 类型 操作

How does the improved DB mode degrade the complex integrity of infrastructure mega-projects? Evidence from the Hong Kong-Zhuhai-Macao Bridge project in China

Jinwen ZHANG, Yumin QIU

期刊论文

港珠澳大桥岛隧工程

林鸣, 林巍

期刊论文

论本质管理思想 ——基于港珠澳大桥岛隧工程管理实践

林鸣,王孟钧,王青娥,唐娟娟

期刊论文

桥岛隧组合跨海通道的最新建设技术

葛耀君, 袁勇

期刊论文

岛上特大城市——隧道系统作为解决交通问题的关键备选方案

Vladimir V. Makarov

期刊论文

Avoiding the innovation island in infrastructure mega-project

Hongquan CHEN, Quanke SU, Saixing ZENG, Daxin SUN, Jonathan Jingsheng SHI

期刊论文

Piezoresistive pressure sensor with high sensitivity for medical application using peninsula-island structure

Tingzhong XU, Hongyan WANG, Yong XIA, Zhiming ZHAO, Mimi HUANG, Jiuhong WANG, Libo ZHAO, Yulong ZHAO, Zhuangde JIANG

期刊论文

土质隧道深浅埋界定方法研究

赵占厂,谢永利

期刊论文

Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

期刊论文

一种去除地表水中的磷的浮岛处理系统

Mark T. Brown, Treavor Boyer, R.J. Sindelar, Sam Arden, Amar Persaud, Sherry Brandt-Williams

期刊论文

珊瑚岛礁环境噪声成像

夏少红, 张昌榕, 曹敬贺

期刊论文

核电不稳定导致美国政府关闭三哩岛核电站

Mitch Leslie

期刊论文

浦东国际机场东移与九段沙生态工程

陈吉余,李道季,金文华

期刊论文

Smart construction site in mega construction projects: A case study on island tunneling project of Hong

Hongtao ZHOU, Hongwei WANG, Wei ZENG

期刊论文

Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

期刊论文