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Independent cover meshless particle method for complex geotechnical engineering

Jianqiu WU, Yongchang CAI

《结构与土木工程前沿（英文）》 2018年第12卷第4期页码 515-526 doi: 10.1007/s11709-017-0428-4

摘要： A new Independent Cover Meshless Particle (ICMP) method is proposed for the analysis of complex geotechnical engineering. In the ICMP method, the independent rectangular cover regardless of the shape of the analysis model is employed as the influence domain of each discrete node, the general polynomial is employed as the meshless interpolation function of the independent nodal cover, and the Cartesian Transformation Method (CTM) is used for the numerical integration of the nodal covers cut by material interfaces, joints, cracks and faults. The present method has a simple formulation and a low computational cost, and is easy for the numerical analysis and modeling of complex geotechnical engineering. Several typical numerical examples are presented to demonstrate the accuracy and robustness of the proposed method.

关键词： meshless method particle method independent cover CTM geotechnical engineering

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Consistency Guarantees for Professional Appraisal of Geotechnical Engineering Design under Market Leading

Jian-ye Zheng

《工程管理前沿（英文）》 2015年第2卷第1期页码 82-85 doi: 10.15302/J-FEM-2015012

摘要： Peer review is central to the process of modern engineering. Open peer review gives the impression that decisions are arrived at in a fair and meritocratic manner with an objective, reliable, consistent process. It is responsible for identifying methodological flaws and for improving the quality. Assistance from somebody in the same discipline is valuable. Clients refer to reviewers as referees since they help to determine the fate of a design. The client sets up a hanging committee to carry out open peer review to decide whether a piece of work should be accepted, revised or rejected. Reviewers in similar specialties make up a professional group. In an open peer review refereeing a retaining and protection structure design of building foundation pit excavation, an outside expert as an assessor, might master the art of review to pay attention to guarantee consistency of processes and outcomes.

关键词： peer review foundation pit excavation retaining and protection structure design introduction

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Classification and quantification of excavated soil and construction sludge: A case study in Wenzhou, China

《结构与土木工程前沿（英文）》 2022年第16卷第2期页码 202-213 doi: 10.1007/s11709-021-0795-8

摘要： With rapid urbanization in China, a large amount of excavated soil and construction sludge is being generated from geotechnical and underground engineering. For sustainable management of these construction wastes, it is essential to quantify their production first. The present study has attempted to classify the excavated soil and construction sludge according to their composition and geotechnical properties (particle size, water content, plasticity index). Based on these classifications, a new approach was proposed to quantify the production. The said approach was based on multi-source information, such as the urban topographic map, geological survey reports, urban master plan, and remote sensing images. A case study in Wenzhou city of China was also pursued to illustrate the validity of the newly developed approach. The research showed that in 2021–2025, the total excavated soils and construction sludge production in Wenzhou would reach 107.5 × 10⁶ and 81.7 × 10⁶ m³, respectively. Furthermore, the excavated soil was classified into the miscellaneous fill, crust clay, muddy clay and mud with silty sand. Likewise, the construction sludge was classified as liquid sludge and paste-like sludge. The classification and quantification can serve as guidance for disposal and recycling, thereby leading to high-level management of waste disposal.

关键词： excavated soil construction sludge geotechnical and underground engineering production classification

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Multiscale stochastic finite element method on random field modeling of geotechnical problems – a fast

Xi F. XU

《结构与土木工程前沿（英文）》 2015年第9卷第2期页码 107-113 doi: 10.1007/s11709-014-0268-4

摘要： The Green-function-based multiscale stochastic finite element method (MSFEM) has been formulated based on the stochastic variational principle. In this study a fast computing procedure based on the MSFEM is developed to solve random field geotechnical problems with a typical coefficient of variance less than 1. A unique fast computing advantage of the procedure enables computation performed only on those locations of interest, therefore saving a lot of computation. The numerical example on soil settlement shows that the procedure achieves significant computing efficiency compared with Monte Carlo method.

关键词： multiscale finite element settlement perturbation random field geotechnical

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有限元极限分析法发展及其在岩土工程中的应用

郑颖人,赵尚毅,邓楚键,刘明维,唐晓松,张黎明

《中国工程科学》 2006年第8卷第12期页码 39-61

摘要：

有限元极限分析法兼有数值分析法与经典极限分析法两者的优点，特别适用于岩土工程的分析与设计。20世纪初，国内岩土工程界应用国际上通用程序，大力发展有限元极限分析法并拓宽其在岩土工程中的应用。在基本理论研究、提高计算精度、拓宽应用范围及工程实际应用等方面取得了很大成绩。重点介绍作者及其合作者的一些研究成果。主要包括岩土工程安全系数定义、方法原理、整体失稳判据、强度准则的推导、选用及提高计算精度等方面的研究。应用范围从二维扩大到三维，从均质土坡、土基扩大到有节理的岩质边坡与岩基，从稳定渗流扩大到不稳定渗流、从边坡与地基工程扩大到隧道、还用于寻找边（滑）坡中的多个潜在滑面，进行岩土与结构共同作用的支挡结构设计，计算机仿真地基承载板载荷试验等应用项目，以逐渐达到革新岩土工程设计方法的目的。

关键词：极限分析法有限元法岩土工程边坡地基隧道

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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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深圳“12·20”渣土场灾难滑坡成灾机理与岩土工程风险控制研究 Artical

殷跃平,李滨,王文沛,詹良通,薛强,高杨,张楠,陈红旗,刘天奎,李爱国

《工程（英文）》 2016年第2卷第2期页码 230-249 doi: 10.1016/J.ENG.2016.02.005

摘要：

2015 年12 月 20 日，广东省深圳市光明新区建筑渣土场发生滑坡，造成77人遇难、33栋建筑物被毁。现场勘察、无人机3D摄影测量、多期遥感影像动态分析表明，该滑坡源区滑带倾角仅4°，滑程长达1100 m，最大堆积宽度为630 m，体积约为2.73 × 106 m³，是目前世界上最大的渣土场滑坡。自2014 年3 月开始建设渣土场以来，堆填体积逐级增加、坡型不断变化，滑坡边界条件和水文特性具有不确定性。本文提出了多级建模方法以研究不同堆填阶段下坡体结构的变化特征，采用非稳定流理论模拟了地下水渗流场的演化特征。分析表明，渣土场可以划分为具有低含水率的前缘边坡和具有高含水率( 含底部积水) 的后缘渣土堆填体两个亚区。这种特殊的二元结构带来了两种效应：第一，地表水入渗，后缘渣土堆填的地表水入渗位置随填土的增高而逐渐抬升，导致了前缘坡体超孔隙水压力水头逐渐增大；第二，固结渗流，在后缘渣土堆填区上部的渣土堆载导致下部饱水渣土体产生超静孔压，形成底部饱水软弱滑带，并促使地下水逐渐向前缘坡体渗流。两种效应的叠加导致了坡体稳定性降低，引发了前缘的液化失稳，最终导致了整体滑动。通过静力触探、大型三轴和环剪试验获得了滑坡的土动力学参数，对远程滑动的成灾过程的模拟表明，滑体运动的最大速度约为29.8 m·s^–1，最大堆积厚度约为23 m，滑坡主体滑动时间约为130 s，视摩擦角为6°。最后，对比分析了全球近期发生的多起渣土场滑坡灾难，从技术上看，这些风险大多是可预见的，但是，由于非技术原因往往未被预见到，因此，需要加强城镇化岩土工程的技术和非技术风险的管控。

关键词：建筑渣土渣土场滑坡安全系数岩土工程风险

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Centrifuge experiments for shallow tunnels at active reverse fault intersection

Mehdi SABAGH, Abbas GHALANDARZADEH

《结构与土木工程前沿（英文）》 2020年第14卷第3期页码 731-745 doi: 10.1007/s11709-020-0614-7

摘要： Tunnels extend in large stretches with continuous lengths of up to hundreds of kilometers which are vulnerable to faulting in earthquake-prone areas. Assessing the interaction of soil and tunnel at an intersection with an active fault during an earthquake can be a beneficial guideline for tunnel design engineers. Here, a series of 4 centrifuge tests are planned and tested on continuous tunnels. Dip-slip surface faulting in reverse mechanism of 60-degree is modeled by a fault simulator box in a quasi-static manner. Failure mechanism, progression and locations of damages to the tunnels are assessed through a gradual increase in Permanent Ground Displacement (PGD). The ground surface deformations and strains, fault surface trace, fault scarp and the sinkhole caused by fault movement are observed here. These ground surface deformations are major threats to stability, safety and serviceability of the structures. According to the observations, the modeled tunnels are vulnerable to reverse fault rupture and but the functionality loss is not abrupt, and the tunnel will be able to tolerate some fault displacements. By monitoring the progress of damage states by increasing PGD, the fragility curves corresponding to each damage state were plotted and interpreted in related figures.

关键词： reverse fault rupture continuous tunnel geotechnical centrifuge ground surface deformations fragility curves

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Geotechnical forensic investigation of a slope failure on silty clay soil—A case study

Mohammad Abubakar NAVEED, Zulfiqar ALI, Abdul QADIR, Umar Naveed LATIF, Saad HAMID, Umar SARWAR

《结构与土木工程前沿（英文）》 2020年第14卷第2期页码 501-517 doi: 10.1007/s11709-020-0610-y

摘要： Qila Bala Hisar is one of the noteworthy places of Peshawar, Khyber Pakhtunkhwa. The fort was constructed on a filled ground during the 18th century and it was renovated several times by the occupants ever since. Recently, due to an earthquake of magnitude 7.3, the upper part of the south-western wall of the fort collapsed. The collapse of the wall was attributed to the failure of the retained slope. This research was undertaken to characterize the slope material, study causal factors of failure and evaluate remedial strategy. The investigation involved conventional field and laboratory testing and geophysical investigation using electrical resistivity technique to evaluate the nature of stratum. Also, X-ray Diffraction and Scanning Electron Microscopy was used to study the slope material at a molecular level to evaluate the existence of swelling potential. The analysis has shown that excessive seepage of water caused by the poor maintenance of runoff and sewage drains is the causal factor triggered by the seismic event. A remedial strategy involving soil nails, micro piles and improvement of the surface drainage is recommended.

关键词： forensic geotechnical investigation slope failure slope analysis finite element method numerical analysis seismic loading Qila Bala Hisar

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广义塑性力学及其运用

郑颖人,孔亮

《中国工程科学》 2005年第7卷第11期页码 21-36

摘要：

分析了经典塑性力学用于岩土类材料的问题，它采用了3个不符合岩土材料变形机制的假设。从固体力学原理直接导出广义塑性位势理论，将经典塑性力学改造为更一般的塑性力学——广义塑性力学。广义塑性力学采用了塑性力学中的分量理论，能反映应力路径转折的影响，并避免了采用正交流动法则所引起的过大剪胀等不合理现象，也不会产生当前非关联流动法则中任意假定塑性势面引起的误差。给出了广义塑性力学的屈服面理论、硬化定律和应力-应变关系，并建立了考虑应力主轴旋转的广义塑性位势理论。屈服条件是状态参数，也是试验参数，只能由试验给出。应用表明，广义塑性力学可作为岩土材料的建模理论，还可应用于诸如极限分析等土力学的诸多领域，具有广阔的应用前景。

关键词：岩土塑性力学广义塑性力学塑性势屈服面本构模型

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工程与工程管理的哲学思考

何继善,王孟钧

《中国工程科学》 2008年第10卷第3期页码 9-12

摘要：

当前，我国正处于经济建设快速发展时期，许多重大工程相继建成并投入使用，凸现工程活动的重要地位和工程管理的巨大作用，标志着我国已经进入工程时代。工程时代呼唤工程哲学，工程建设管理活动离不开哲学思想指导，大力开展工程哲学研究既是哲学发展的必然，又是时代的迫切要求。文章在分析工程哲学的形成、发展及主要研究内容的基础上，提出了工程的哲学内涵与本质：物质性、变化性和时空性，进而对工程管理的理念、价值观、方法论、组织与创新等方面的哲学内涵进行了探讨，以促进我国工程管理理论的发展和管理水平的提高。

关键词：工程哲学工程工程管理哲学思考

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Engineering Informatics: State of the Art and Future Trends

Li-da Xu

《工程管理前沿（英文）》 2014年第1卷第3期页码 270-282 doi: 10.15302/J-FEM-2014038

摘要： Engineering informatics is an emerging engineering discipline integrating information technology or informatics with a variety of engineering disciplines. It is an interdisciplinary scientific subject focusing on applying advanced information and communications technology (ICT) to a variety of engineering disciplines. Rapid advances in industrial information integration methods have spurred the growth of new techniques that can be used for probing industrial information integration including engineering informatics. These techniques include business process management (BPM), enterprise architecture (EA), enterprise application integration (EAI), service-oriented architecture (SOA), and others. Practical applications may require a combination of these techniques that have originated from different disciplines. These techniques have the potential to contribute to engineering informatics. For integrating complex engineering systems, both formal methods and systems methods are crucial. In this paper, we briefl review the state of the art of engineering informatics as it interfacing with industrial information integration.

关键词： engineering informatics industrial integration industrial information integration engineering (IIIE) engineering management

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Synergetic Management Theory for Coal-Based Energy Engineering and the Engineering Practice of Shenhua

Wen Ling

《工程管理前沿（英文）》 2016年第3卷第1期页码 1-8 doi: 10.15302/J-FEM-2016005

摘要： To deal with problems in synergetic development of coal-based energy engineering, this paper, guided by the philosophy of engineering, proposes the synergetic management philosophy of “factors coordination, systems synergy, dynamic optimization and three-dimension planning.” The paper also establishes the synergetic management system characterized by systems factor synergy, resource-environment synergy and systems boundary extension and supported by the “two-wheel driven” management innovation and technological innovation. In addition, the paper presents a multi-objective dynamic optimization model for energy engineering, designed based on Shenhua’s own engineering practice, to analyze Pareto optimal solution in three scenarios: best resource allocation, minimal environmental impact and maximal value creation. This provides important reference to synergetic development strategies and decision-making in engineering management.

关键词： coal-based energy engineering synergetic management two-wheel driven innovation Shenhua engineering

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Engineering and Philosophy of Engineering

Rui-yu Yin,Bo-cong Li

《工程管理前沿（英文）》 2014年第1卷第2期页码 140-146 doi: 10.15302/J-FEM-2014021

摘要： Philosophy of engineering lays the philosophical foundation of recognition, understanding and management of engineering. Being the kernel of philosophy of engineering, engineering ontology becomes the master key to understanding of engineering. The paper proposes and interprets the principal theses of engineering ontology, which differs from understanding of engineering in separate elements. Engineering ontology believes that engineering is the direct, realistic productivity that runs dynamically and feasibly and creates values. Engineering involves the relationship between human beings and the nature as well as the relationship between human beings and the society, and it has been a basic motive force and a basic way of promoting the social development, so that engineering gains the ontological status and fundamental value in social existence and social development. From the historical point of view, the engineering appears before the emergence of technology and science. Engineering has its own basis for existence, its own structure and its own laws for movement and evolution. Engineering should not be simply regarded as the ramification and derivative from science or technology. Engineering ontology is the theoretical basis of the triism of “science, technology, and engineering”. To understand and handle the mutual relationship among engineering, technology and science, by the evaluation criteria of engineering as the direct productivity, the process and effect of engineering-centered selection, integration and construction must be emphasized and the characteristic and mechanism of selection, integration and construction must be paid high attention. Under no circumstance may the engineering be deemed as an unchanged matter, which is constantly evolving and developing, so the studies on engineering ontology are closely and internally related with the theory of engineering evolution.

关键词： engineering philosophy of engineering engineering ontology productivity engineering value

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Yesterday, Today and Future of the Engineering Management Body of Knowledge

Hiral Shah,Walter Nowocin

《工程管理前沿（英文）》 2015年第2卷第1期页码 60-63 doi: 10.15302/J-FEM-2015009

摘要： Young engineers are often promoted to leadership roles such as a team leader or a manager within 3 to 6 years of graduating from an undergraduate degree in a technical area. To be competent and successful in their leadership role engineers need to update their engineering management knowledge and learn new skills. The purpose of engineering management body of knowledge (EMBOK) is to delineate the knowledge, skills, and competency areas that are applicable to the engineering management discipline. It basically answers the question, “What does it take to be an effective engineering manager?” The EMBOK is based on a validated study and can be used for curriculum development, certification exams, and professional development programs. This paper describes the 11 domains that are included in the EMBOK and discuss the future publication of the EMBOK Guide. American Society for Engineering Management (ASEM) offers two certification exams based on the EMBOK, Associate Engineering Manager (AEM) and Professional Engineering Manager (PEM).These certification exams can help an individual in the engineering management profession to show that they have kept up in the field and possess the necessary skills and competency to practice in the discipline. A detailed description of this certification program is included in this paper. The future of EMBOK and the certification program is also discussed.

关键词： body of knowledge engineering management certification exam engineering manager competency areas