Query：
学者姓名：路德春
Refining：
Year
Type
Indexed by
Source
Complex
Co-Author
Language
Clean All
Abstract ：
How to realize the efficient scheduling of construction equipment and ensure the construction quality is the key problem that restricts the development of intelligent construction technology. This paper proposes a multi- equipment collaborative optimization scheduling method for intelligent construction scene. Firstly, a logical model of intelligent construction scene is proposed, and the characteristics and requirements of construction in intelligent construction scene are clarified. Considering the relationship between construction processes and the control requirements of construction quality, an intelligent planning model of multi-equipment collaborative scheduling scheme is established. Aiming at the problem of equipment scheduling analysis, an improved non- dominant classification genetic algorithm (NSGA-II) is proposed. According to the solution results of the improved NSGA-II, the data mapping relationship between the scheduling scheme and the construction completion time and construction energy consumption is established. The verification and application of the proposed method are carried out by a cable truss structure experimental model.
Keyword ：
Deep learning Deep learning Optimized scheduling Optimized scheduling Experimental verification Experimental verification Intelligent construction scene Intelligent construction scene Multi-equipment collaboration Multi-equipment collaboration
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Zhansheng , Shi, Guoliang , Lu, Dechun et al. Multi-equipment collaborative optimization scheduling for intelligent construction scene [J]. | AUTOMATION IN CONSTRUCTION , 2024 , 168 . |
| MLA | Liu, Zhansheng et al. "Multi-equipment collaborative optimization scheduling for intelligent construction scene" . | AUTOMATION IN CONSTRUCTION 168 (2024) . |
| APA | Liu, Zhansheng , Shi, Guoliang , Lu, Dechun , Du, Xiuli , Zhang, Qingwen . Multi-equipment collaborative optimization scheduling for intelligent construction scene . | AUTOMATION IN CONSTRUCTION , 2024 , 168 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Concrete is a geotechnical material characterized by cohesive-frictional properties. However, there is currently paucity of specialized experimental research to elucidate these features and their potential mechanisms. This study addresses this gap by designing and conducting 72 experimental sets on C30, C40, and C50 concrete to investigate their cohesive-frictional attributes. Utilizing two comprehensive conventional triaxial compression tests halted upon reaching constant stress with increasing strain, this research examines the mechanisms and corresponding mechanical behaviors of cohesion and friction. During the initial loading test, the macroscopic mechanical behavior, incorporating both cohesive and frictional properties, is observed. The same specimen is then subjected to a second triaxial test under identical conditions, predominantly revealing frictional mechanical behavior. By comparing the results from the initial and subsequent loadings of the same specimen, the cohesive and frictional properties of concrete are decoupled, allowing for the determination of independent deformation and strength laws for cohesion and friction. Based on the experimental findings, this study thoroughly discusses the deformation mechanisms and strength evolution laws of both properties, elucidating the manifestation mechanisms of cohesion and friction in concrete. Furthermore, a comparative analysis with the nonlinear unified strength criterion and the strength laws on the triaxial compression meridian plane is performed. The novel experimental method proposed in this study, which is designed to investigate the cohesion-friction properties of concrete, has successfully decoupled the cohesive strength and frictional strength of concrete for the first time from an experimental perspective. This research provides a foundational experimental basis and mechanistic insight into the fundamental mechanical properties of concrete materials, which will facilitate the establishment of cohesive-frictional strength theories and constitutive models.
Keyword ：
Concrete materials Concrete materials Cohesive properties Cohesive properties Frictional properties Frictional properties Triaxial tests Triaxial tests Mechanical behaviour Mechanical behaviour
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Guosheng , Cai, Tao , Lu, Dechun et al. Experimental study on cohesion-friction mechanical properties for concrete [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 449 . |
| MLA | Wang, Guosheng et al. "Experimental study on cohesion-friction mechanical properties for concrete" . | CONSTRUCTION AND BUILDING MATERIALS 449 (2024) . |
| APA | Wang, Guosheng , Cai, Tao , Lu, Dechun , Ma, Chao , Meng, Fanping , Du, Xiuli . Experimental study on cohesion-friction mechanical properties for concrete . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 449 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Establishing a high-fidelity twin model and accurately analyzing instant mechanical behaviors are important ways to improve structural reliability. This study proposes a digital twin - based model updating method for mechanical behaviors analysis of cable truss structure. A mechanical behaviors analysis architecture integrating structural entity in physical space, structural twin model and model dynamic updating algorithms is developed. A computational method suitable for model updating of cable truss structures is developed by integrating the finite element model with the programming language. The twin modelling approach is developed by using the test structure as a comparative target for parameter correction. Relying on the twin model, the structural mechanical behaviors analysis is carried out. The effectiveness of the analysis method is verified by taking the cable truss structure as an example. The objective function and optimization parameters required for model updating are constructed to carry out mechanical behaviors analysis and damage identification of the structure. The results show that the updated twin model can accurately match the measured data of the mechanical behaviors of the structure. For the static and dynamic response of the structure, the simulation accuracy of the twin model is above 94%. For structural damage identification, the type, location and extent of damage can be efficiently obtained by comparing the parameters before and after the update.
Keyword ：
Model update Model update Mechanical behaviors Mechanical behaviors Digital twin Digital twin Cable truss structure Cable truss structure Damage identification Damage identification
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shi, Guoliang , Liu, Zhansheng , Lu, Dechun et al. Digital twin - based model updating method for mechanical behaviors analysis of cable truss structure [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2024 , 221 . |
| MLA | Shi, Guoliang et al. "Digital twin - based model updating method for mechanical behaviors analysis of cable truss structure" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 221 (2024) . |
| APA | Shi, Guoliang , Liu, Zhansheng , Lu, Dechun , Zhang, Qingwen , Wang, Zeqiang , Zhao, Yifeng . Digital twin - based model updating method for mechanical behaviors analysis of cable truss structure . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2024 , 221 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In order to ensure the high efficiency and quality consistency of cable structure in each construction stage, this study proposes a digital twin method for intelligent lifting of cable structure under multi-collaborative mode. Firstly, a construction and operation methods of the digital twin logic model are formed. In the logical model, a relationship between the transmission and iteration of construction information in the collaborative process is defined. In order to realize the adaptability of working conditions, the coupling relationship between construction step and structural elevation is established. A cable structure lifting analysis model driven by an improved long short-term memory neural network is proposed, which effectively solves the problem of poor convergence of the traditional finite element method. An automatic time window selection method is formed for the neural network. An adaptive moment estimation method is used for neural network parameter optimization, which improves the efficiency and accuracy of the analysis. Taking the lifting process of a cable truss structure test model as an example, a digital twin collaborative construction platform is established to verify the effectiveness and feasibility of the research method. The results show that the digital twin logic model realizes the process collaboration, scene collaboration and data collaboration, and significantly improves the stability of construction quality and the linkage of construction process. Through the improved long short-term memory neural network, the coupling relationship between the construction step and the structural elevation is established, which accurately guides the whole construction process.
Keyword ：
Intelligent lifting Intelligent lifting Multi-collaborative mode Multi-collaborative mode Cable structure Cable structure Digital twin Digital twin Improved long short-term memory Improved long short-term memory
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shi, Guoliang , Liu, Zhansheng , Lu, Dechun et al. Digital twin method for intelligent lifting of cable structures under multi-collaborative mode [J]. | THIN-WALLED STRUCTURES , 2024 , 205 . |
| MLA | Shi, Guoliang et al. "Digital twin method for intelligent lifting of cable structures under multi-collaborative mode" . | THIN-WALLED STRUCTURES 205 (2024) . |
| APA | Shi, Guoliang , Liu, Zhansheng , Lu, Dechun , Zhang, Qingwen , Zhang, Yupeng , Wang, Zeqiang . Digital twin method for intelligent lifting of cable structures under multi-collaborative mode . | THIN-WALLED STRUCTURES , 2024 , 205 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In the construction process of construction engineering, there exist a complex construction site layout and multiequipment collaborative work. If a reasonable construction plan cannot be made quickly and accurately, the investment in construction costs will be increased. Aiming at the construction material distribution, this study proposed a construction plan planning method under the multinode and multivehicle scene. Firstly, a mathematical model of the material distribution planning problem in the multinode multivehicle scene was established. The basic assumptions, objective functions, and constraints were proposed. The triangular scalar variables and 'unitization' processing methods were incorporated into the mathematical model. In order to solve the problem of material distribution planning, a heuristic neural network algorithm was designed. A 'gene-chromosome-individual' representation method and a 'two-step' calculation concept were defined. The specific implementation steps of the algorithm were given. Fully considering the type and quantity of vehicles and the length of the path, a method of establishing the mapping relationship between the construction scheme and the construction cost was proposed. The feasibility of the proposed theoretical method was verified by a cable truss structure model experiment. A calculation method with high fitting degree and fast running speed was established. According to the experiment model, the best construction scheme was formed. The results showed that the optimal construction scheme had a high vehicle loading rate and a clear distribution path, which effectively saved the construction cost under the premise of ensuring smooth construction.
Keyword ：
Mathematical modeling Mathematical modeling Optimization of scheme Optimization of scheme Heuristic algorithm Heuristic algorithm Material distribution Material distribution Multinode multivehicle type Multinode multivehicle type
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shi, Guoliang , Lu, Dechun , Liu, Zhansheng et al. Material Distribution Planning Method and Experimental Verification under Multinode and Multivehicle Scene [J]. | JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT , 2024 , 150 (11) . |
| MLA | Shi, Guoliang et al. "Material Distribution Planning Method and Experimental Verification under Multinode and Multivehicle Scene" . | JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT 150 . 11 (2024) . |
| APA | Shi, Guoliang , Lu, Dechun , Liu, Zhansheng , Du, Xiuli , Zhang, Qingwen , Zhao, Linlin et al. Material Distribution Planning Method and Experimental Verification under Multinode and Multivehicle Scene . | JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT , 2024 , 150 (11) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
An empirical model for describing the soil movements induced by tunneling is proposed, then the mathematical relationship between horizontal displacement and vertical displacement is obtained. By analyzing 25 sets of data from field engineering and 35 sets of data from model tests, the formula for the maximum settlement Sv, max(z) is optimized to adapt to different ground conditions. The Modified Gaussian function is developed by introducing the existing width coefficient of the settlement trough i(z) and the optimized Sv, max(z) to describe the surface and subsurface vertical displacement. Subsequently, the formula for the horizontal displacement is derived based on the Modified Gaussian function. H(z) representing the position of the oriented point of the soil movement is a variable in the formula for horizontal displacement. Based on measured results, a logarithmic function and a quadratic polynomial function are proposed to describe the variation of H(z) with depth in the clay stratum and sand stratum, respectively. Then, the rationality of the proposed method is validated by 4 sets of in-situ data and 4 sets of test data. Finally, the implementation process of the proposed method is illustrated, and the inversion results of the ground displacement field in Beijing Metro Line 12 are presented.
Keyword ：
vertical displacement vertical displacement empirical method empirical method horizontal displacement horizontal displacement Modified Gaussian function Modified Gaussian function tunnel excavation tunnel excavation
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lin, Qingtao , Meng, Xu , Lu, Dechun et al. A unified empirical method for predicting both vertical and horizontal ground displacements induced by tunnel excavation [J]. | CANADIAN GEOTECHNICAL JOURNAL , 2024 , 61 (7) : 1468-1495 . |
| MLA | Lin, Qingtao et al. "A unified empirical method for predicting both vertical and horizontal ground displacements induced by tunnel excavation" . | CANADIAN GEOTECHNICAL JOURNAL 61 . 7 (2024) : 1468-1495 . |
| APA | Lin, Qingtao , Meng, Xu , Lu, Dechun , Miao, Jinbo , Zhao, Zhihong , Du, Xiuli . A unified empirical method for predicting both vertical and horizontal ground displacements induced by tunnel excavation . | CANADIAN GEOTECHNICAL JOURNAL , 2024 , 61 (7) , 1468-1495 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
The accuracy of a constitutive model for confined concrete largely relies on its capability to capture concrete's dilatancy behavior. In this paper, a non -orthogonal flow rule (NFR) is used to reasonably characterize the concrete's volume change law in relation to the stress state without the necessity for a plastic potential function. Then, the non -orthogonal plastic model is implemented in the finite element (FE) software ABAQUS using the implicit stress update algorithm, which employs the line search method and the numerical consistent tangent stiffness matrix to ensure the robustness and computational efficiency of FE analysis. Finally, FE simulations are performed to evaluate the constitutive model's capabilities in actively and passively confined concrete. In the latter case, steel tubes restrict the concrete's lateral deformation. An analysis and discussion are conducted regarding the impact of dilatancy behavior on concrete -filled steel tube (CFST) columns. The consistency between experimental data and simulation results demonstrates that the FE modeling with a non -orthogonal constitutive model provides an effective tool to describe the behavior of confined concrete.
Keyword ：
Constitutive model Constitutive model Finite elements Finite elements Numerical implementation Numerical implementation Confined concrete Confined concrete
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Meng, Fanping , Lu, Dechun , Wang, Shanyong et al. Modeling confined concrete behavior in finite element with a non-orthogonal elastoplastic model [J]. | ENGINEERING STRUCTURES , 2024 , 312 . |
| MLA | Meng, Fanping et al. "Modeling confined concrete behavior in finite element with a non-orthogonal elastoplastic model" . | ENGINEERING STRUCTURES 312 (2024) . |
| APA | Meng, Fanping , Lu, Dechun , Wang, Shanyong , Zhou, Xin , Du, Xiuli . Modeling confined concrete behavior in finite element with a non-orthogonal elastoplastic model . | ENGINEERING STRUCTURES , 2024 , 312 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Soils encountered in geotechnical engineering exhibit a certain degree of overconsolidation and are in a three-dimensional (3D) stress state. The overconsolidated ratio (OCR) and the intermediate principal stress play a significant role in the strength and deformation of overconsolidated soils. By considering the variation of the peak stress ratio with OCR, and taking the zero-tension line and the critical state line as asymptotes, a continuous and smooth Hvorslev envelope is deduced to describe the peak strength of overconsolidated soils. Based on the proposed Hvorslev envelope, a simple 3D elastoplastic constitutive model for overconsolidated soils is directly established through the characteristic stress method. The constitutive relation of the proposed model is presented by the calculation of the total strain increment. All material parameters have clear physical meanings and can be determined by conventional laboratory tests. The isotropic compression path, the triaxial drained shearing path with constant p, the triaxial undrained shearing path, and the true triaxial drained shearing path with constant p and & theta; are adopted to demonstrate the essential features of the proposed model. The effectiveness of the proposed model is confirmed by comparing the experimental data from Lower Cromer till, Kaolin clay, and Fujinomori clay with corresponding model predictions.
Keyword ：
Three-dimensional stress conditions Three-dimensional stress conditions Hvorslev envelope Hvorslev envelope Overconsolidated soils Overconsolidated soils Characteristic stress method Characteristic stress method Elastoplastic constitutive model Elastoplastic constitutive model
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Xiaoqiang , Lu, Dechun , Dong, Xiaoqiang et al. A simple 3D elastoplastic constitutive model for overconsolidated soils based on the improved Hvorslev envelope [J]. | COMPUTERS AND GEOTECHNICS , 2023 , 162 . |
| MLA | Li, Xiaoqiang et al. "A simple 3D elastoplastic constitutive model for overconsolidated soils based on the improved Hvorslev envelope" . | COMPUTERS AND GEOTECHNICS 162 (2023) . |
| APA | Li, Xiaoqiang , Lu, Dechun , Dong, Xiaoqiang , Miao, Jinbo , Lin, Qingtao , Du, Xiuli . A simple 3D elastoplastic constitutive model for overconsolidated soils based on the improved Hvorslev envelope . | COMPUTERS AND GEOTECHNICS , 2023 , 162 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
A simple numerical simulation method is proposed to investigate the mechanical response of the unsaturated stratum under the water environmental load. The proposed numerical simulation method applies the water environmental load to the unsaturated stratum as the load condition, and adopts the developed non-orthogonal elastoplastic constitutive model for unsaturated soil to describe the mechanical behaviors at the material scale. The mechanical response of unsaturated stratum is obtained by solving the discretized governing equation of the mechanical equilibrium. The proposed numerical simulation method is implemented based on the commercial finite element software ABAQUS. The effectiveness of the proposed method is verified through the element tests on the Botkin silt, the element tests on the Pearl clay, and a model test of the rising water level on a sand column. The numerical simulations of the rising and decreasing groundwater level in the unsaturated stratum are con-ducted. During the rising groundwater level, the non-collapsible stratum produces rebound deformation, the collapsible stratum below the groundwater level occurs rebound deformation, and the collapsible stratum above the groundwater level mainly produces settlement deformation. During the decreasing groundwater level, both the collapsible stratum and the non-collapsible stratum produce the settlement deformation.
Keyword ：
Groundwater level Groundwater level Wetting-induced deformation Wetting-induced deformation Unsaturated stratum Unsaturated stratum Non-orthogonal flow rule Non-orthogonal flow rule Numerical simulation Numerical simulation Elastoplastic constitutive model Elastoplastic constitutive model
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Xiaoqiang , Lu, Dechun , Lin, Qingtao et al. A simple numerical simulation method for unsaturated stratum under the water environmental load [J]. | COMPUTERS AND GEOTECHNICS , 2023 , 154 . |
| MLA | Li, Xiaoqiang et al. "A simple numerical simulation method for unsaturated stratum under the water environmental load" . | COMPUTERS AND GEOTECHNICS 154 (2023) . |
| APA | Li, Xiaoqiang , Lu, Dechun , Lin, Qingtao , Kong, Fanchao , Du, Xiuli . A simple numerical simulation method for unsaturated stratum under the water environmental load . | COMPUTERS AND GEOTECHNICS , 2023 , 154 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
The failure location identification of granular materials can be solved by capturing the deformation localization. Considering the relative translation and rotation among particles, a new concept named the relative particle motion (RPM) is proposed to describe the deformation localization of the granular materials. An approach is developed to realize the selection of particles that are used to calculate RPM. The number of particles involved in RPM calculation is controlled by two key parameters, i.e., grid spacing (U) and domain radius (R). Combining the proposed concept and the selection approach of particles, the method that can capture the region of the deformation localization in the granular material is established and implemented in PFC2D.The simulation of a uniaxial compression test is conducted to analyze the effect of parameters U and R on the calculation results of the RPM field, and a reasonable range of U and R is given. Three typical conditions, including the biaxial compression, trapdoor, and particle flow tests, are taken as examples to validate the proposed method under different loading conditions. Regions of the deformation localization characterized by RPM have a good agreement with the shear band presented in the published literature.
Keyword ：
Granular material Granular material Relative particle motion Relative particle motion Failure evolution Failure evolution DEM DEM Deformation localization Deformation localization
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lu, Dechun , Dong, Hongyu , Lin, Qingtao et al. A method for characterizing the deformation localization in granular materials using the relative particle motion [J]. | COMPUTERS AND GEOTECHNICS , 2023 , 156 . |
| MLA | Lu, Dechun et al. "A method for characterizing the deformation localization in granular materials using the relative particle motion" . | COMPUTERS AND GEOTECHNICS 156 (2023) . |
| APA | Lu, Dechun , Dong, Hongyu , Lin, Qingtao , Guo, Caixia , Gao, Zhiwei , Du, Xiuli . A method for characterizing the deformation localization in granular materials using the relative particle motion . | COMPUTERS AND GEOTECHNICS , 2023 , 156 . |
| Export to | NoteExpress RIS BibTex |
Export
| Results： |
Selected to |
| Format： |
