检索范围:
排序: 展示方式:
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
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
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
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。
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
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
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
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
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
赵占厂,谢永利
《中国工程科学》 2005年 第7卷 第10期 页码 84-86
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。
《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
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
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。
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
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
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
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。
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
关键词: mega construction projects smart construction site information perception collaborative work intelligent construction management information and communication technologies
《结构与土木工程前沿(英文)》 页码 1033-1046 doi: 10.1007/s11709-023-0973-y
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
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
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
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