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Research on construction optimization of asymmetric double arch section in Jiaozhou Bay Subsea Tunnel

Wang Kai,Zhang Chengping,Wang Mengshu

Strategic Study of CAE 2012, Volume 14, Issue 1, Pages 90-97

Abstract: Four construction schemes are constituted according to different construction sequences and differentin supporting structure, the most disadvantage position of structural deformation and stress during constructionIt concludes that the surrounding rock deformation could be better controlled by using of the constructionsequence that first middle drift and then right hole of ramb tunnel, and the reasonable constructionscheme is suggested.

Keywords： subsea tunnel asymmetric double arch tunnel construction scheme optimization construction sequence

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Extended model predictive control scheme for smooth path following of autonomous vehicles

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1, Pages 4-4 doi: 10.1007/s11465-021-0660-4

Abstract: This paper presents an extended model predictive control (MPC) scheme for implementing optimal path followingRoad curvature and inclination factors are used in the construction of the vehicle dynamic model to describeThen, an extended MPC method solved by differential evolution optimization algorithm is proposed to realizereal experiments are carried out to evaluate the feasibility and the effectiveness of the extended MPC scheme

Keywords： autonomous vehicles vehicle dynamic modeling model predictive control path following optimization

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Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3, Pages 593-606 doi: 10.1007/s11465-021-0636-4

Abstract: This paper proposes a novel method for the continuum topology optimization of transient vibration problemTo reduce computational cost, the second-order Arnoldi reduction (SOAR) scheme is employed in transientaggregate parameter, duration of loading period, interval time, and number of basis vectors in the SOAR schemeoptimized results clearly demonstrate that the transient effects cannot be ignored in structural topology optimization

Keywords： topology optimization solid isotropic material with penalization transient response aggregation function

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Optimization of centralized cooling schemes in Kongzhuang Coal Mine

Wu Jizhong,Liu Xianglai,Yao Xiangdong,Wang Jianjun

Strategic Study of CAE 2011, Volume 13, Issue 11, Pages 59-67

Abstract: of the centralized cooling plan, the suitable way of cooling the mine is only the vacuum ice cooling scheme

Keywords： coal mine elimination of heat disaster centralized cooling system vacuum ice making scheme selection scheme optimization

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Grouting construction technology of high pressure and rich water fault F11 in Qiyueshan Tunnel

Zhuo Yue,Sun Guoqing

Strategic Study of CAE 2009, Volume 11, Issue 12, Pages 82-86

Abstract:

Karst caves and faults are big challenges in tunnel construction.Water gushing happens in these strata frequently, which affects construction schedule and constructioncontrol and rock collapse prevention adopted for fault F11 as an example, the authors present the new constructionscheme, new construction technology and new effect examination method for water control and rock collapse

Keywords： Qiyueshan Tunnel fractured fault technical challenges new construction scheme new construction technology

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A regularization scheme for explicit level-set XFEM topology optimization

Markus J. GEISS, Jorge L. BARRERA, Narasimha BODDETI, Kurt MAUTE

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2, Pages 153-170 doi: 10.1007/s11465-019-0533-2

Abstract: Regularization of the level-set (LS) field is a critical part of LS-based topology optimization (TO)advancing the LS field through the solution of a Hamilton-Jacobi equation combined with a reinitialization schemeThe SDF is obtained using the heat method (HM) and is reconstructed for every design in the optimizationNavier-Stokes equations in two and three dimensions are presented to show the applicability of the proposed schemeto a broad range of design optimization problems.

Keywords： level-set regularization explicit level-sets XFEM CutFEM topology optimization heat method signed distance

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Key technology of design and construction on immersed tube tunnel

Du Chaowei,Wang Xiuying

Strategic Study of CAE 2009, Volume 11, Issue 7, Pages 76-80

Abstract: text-align: justify;">Combined with the built immersed tube tunnel, comparison and selection of dry-dock scheme

Keywords： immersed tube tunnel scheme comparison waterproof design construction technology

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A review of the multiobjective tradeoff research of construction projects based on intelligent optimization

Zhang Lianying,Xu Chang,Wu Qiong

Strategic Study of CAE 2012, Volume 14, Issue 11, Pages 107-112

Abstract:

The optimal equilibrium between the multiple objectives of constructionIn this paper, a review is provided for the multiobjective tradeoff research of construction projects

Keywords： construction project project management multi-objective optimization intelligent optimization algorithm

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Web-based construction equipment fleet management system: cost-effective global and local allocation

Hakob AVETISYAN, Miroslaw SKIBNIEWSKI

Frontiers of Engineering Management 2017, Volume 4, Issue 1, Pages 76-83 doi: 10.15302/J-FEM-2017012

Abstract: Over the last two decades, construction contractors have been gradually making more investments in constructionequipment to meet their needs associated with increasing volumes of construction projects.To help in informed decision-making, an optimization model is developed as a mixed integer program.The model benefits those responsible for informed decision-making for construction equipment selectionIt also benefits the owners of construction companies, owing to its cost-minimization objective.

Keywords： Construction equipment Equipment assignment optimization Web-based asset management

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Particle swarm optimization model to predict scour depth around a bridge pier

Shahaboddin SHAMSHIRBAND, Amir MOSAVI, Timon RABCZUK

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4, Pages 855-866 doi: 10.1007/s11709-020-0619-2

Abstract: Therefore, this paper aims to develop new equations using particle swarm optimization as a metaheuristic

Keywords： scour depth bridge design and construction particle swarm optimization computational mechanics artificial

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Construction optimization of shallow-buried tunnel in gravel strata based on controlling settlement of

Yu Jun,Liu Songyu and Gong Xiaonan

Strategic Study of CAE 2013, Volume 15, Issue 10, Pages 97-102

Abstract: justify;">The stability of surrounding rock is closely connected with the settlement of the crown during constructionTherefore, simulation analysis of different construction methods was used to get the settlement law ofAt the same time, the better method of construction was put forward to analyze different excavation paththat the crown settlement easily took place during excavation of shallow tunnel and with different construction

Keywords： gravel surrounding rock of tunnel numerical analysis construction optimization crown settlement

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Z-scheme CdS/WO on a carbon cloth enabling effective hydrogen evolution

Frontiers in Energy 2021, Volume 15, Issue 3, Pages 678-686 doi: 10.1007/s11708-021-0768-6

Abstract: Herein, a direct Z-scheme CdS/WO₃ composite photocatalyst was fabricated based on carbon cloth

Keywords： photocatalysis CdS/WO₃ carbon cloth Z-scheme hydrogen evolution

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Multi-objective decision model for construction diversionschemes based on utility

Fan Xi´e,Hu Zhigen,Liu Quan

Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 137-140

Abstract:

Based on the relation between the choice of diversion schemes and the investment cost,period,risk, its risk loss of diversion structure,the paper puts forward the utility function of decision makers.When calculating three decision indexes of risk,period and utility of risk loss, this paper presents a multi-objective decision-making method for diversion schemes considering the utility of risk loss by applying multi-objective decision-making theory. The case study shows that the result of decision making by the multi-objective decision model based on utility reflects the decision maker's favor to his risk preference and his fullest satisfaction.

Keywords： diversion scheme utility losing multi-objective decision risk preference

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Anovel resource optimization scheme for multi-cellOFDMArelay network Article

Ning DU,Fa-sheng LIU

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 8, Pages 825-833 doi: 10.1631/FITEE.1500294

Abstract: In cellular networks, users communicate with each other through their respective base stations (BSs). Conventionally, users are assumed to be in different cells. BSs serve as decode-and-forward (DF) relay nodes to users. In addition to this type of conventional user, we recognize that there are scenarios users who want to communicate with each other are located in the same cell. This gives rise to the scenario of intra-cell communication. In this case, a BS can behave as a two-way relay to achieve information exchange instead of using conventional DF relay. We consider a multi-cell orthogonal frequency division multiple access (OFDMA) network that comprises these two types of users. We are interested in resource allocation between them. Specifically, we jointly optimize subcarrier assignment, subcarrier pairing, and power allocation to maximize the weighted sum rate. We consider the resource allocation problem at BSs when the end users’ power is fixed. We solve the problem approximately through Lagrange dual decomposition. Simulation results show that the proposed schemes outperform other existing schemes.

Keywords： Intra-cell communication Two-way relay Subcarrier assignment Subcarrier pairing

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Scheme comparison on large-scale infrastructure construction in shoal areas

Xian Zhengquan,Liang Jinda,Zhao Lei

Strategic Study of CAE 2010, Volume 12, Issue 4, Pages 29-32

Abstract: Constructing steel pile cofferdam in advance on cap construction instead of steel platform can reduceconstruction cost, schedule and construction difficulty, and improve construction quality.

Keywords： shoal area large-scale infrastructure steel sheet pile cofferdam on building island