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Archive of Advanced Engineering Science — Volume 53 (2021), Issue 6

Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-109
Title : Analysis of Hysteresis Properties of Seismic Damaged Masonry Pagoda Restraint by Rigid Hoops
LU Junlong, , XING Weiwei, , WANG Zhenshan, , SUN Chong,
Abstract : Due to the weak integrity of the damaged masonry pagodas, it is easily to be destroyed heavily for the pagodas affected by earthquake again, even are collapsed. Using rigid hoops to restrain and strengthen the masonry can improve the mechanical properties of ancient masonry pagodas. To study the seismic performance of damaged masonry pagoda reinforced with rigid hoop, three sub-structure models of the masonry pagoda were designed and constructed, and the pseudo-static tests were carried out. The
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-96
Title : Constitutive Simulation and Interfacial Shear Characteristics of Non-water Reaction Polymer and Concrete
WANG Yuke, , YU Bowen, , CAO Tiancai, , GUO Chengchao, , ZHONG Yanhui, , SHI Mingsheng,
Abstract : The mechanical properties of the interface between soil and structure have always been a hot topic in geotechnical engineering. In order to explore the interfacial shear characteristics of non-water reaction polymer and concrete, the effects of vertical stress and shear rate on shear strength and shear modulus of polymer concrete interface were studied based on monotonic direct shear test. The experimental results showed that: under the given vertical stress and shear rate, with the increase of
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-108
Title : Coupled Modeling of Flow?Sediment Transport and Power Generation in the Xiaolangdi Reservoir
XIA Junqiang, , CHEN Yijin, , DENG Shanshan, , ZHOU Meirong, , WANG Zenghui,
Abstract : As the controlling reservoir that possesses a large storage capacity in Yellow River, the operation of Xiaolangdi Reservoir (XLD) is of great importance to the reservoir maintenance and the downstream channel shaping. Considering the integrated economical profit of power generation and sediment discharge, an operation model of XLD was established by coupling the calculations of water-sediment balances with the calculation of power generation. There were two types of optimization objectives: the
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-98
Title : Deep Learning Prediction for Thermal Error of CNC Machine Tools Based on Attention Mechanism
DU Liuqing, , LI Renjie, , LI Baochuan,
Abstract : Thermal error prediction and compensation of CNC machine tools is an important technology to improve the machining accuracy and reliability of CNC machine tools. The thermal error of machine tool is time-varying and nonlinear. To improve the accuracy and robustness of thermal error prediction, a numerical control machine tool thermal error prediction model based on attention mechanism and deep learning network was proposed. Using the data conversion strategy, the original temperature data of CNC
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-94
Title : Deflection Curvature Area Difference Method for Damage Location of Bridge Structures
WU Tong, , TANG Liang, , ZHOU Zhixiang,
Abstract : Deflection is the basic data of bridge health monitoring. It can provide quantitative information for both structural safety evaluations and maintenance purposes. By analyzing the relationship between the displacement and its first and second derivatives (inclination and curvature), a method to detect the local stiffness damage of the structure by using the area difference of curvature of the deflection curve before and after the damage was proposed. The area enclosed by the curvature curves bef
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-99
Title : Deformation, Failure and Nonlinear Flow Characteristics of a Fracture Subject to Normal Stress and Shear Displacement
LI Bo, , WANG Jiafei, , LIU Richeng, , WU Faquan,
Abstract : Exploring the fluid flow mechanism in rock masses is of great significance for preventing water inrush during excavation of underground constructions such as tunnels. Quantitative descriptions of the hydraulic properties of single rock fracture subject to normal stresses and shear displacement are the basis for understanding the coupled hydro-mechanical processes in fractured rock masses; however, the quantitative relationships among stress, deformation, aperture, inertial coefficients have not
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-111
Title : Distribution Rule of Gaseous Phase Salts During Melting of Fly Ash from MSW Incineration Plant
YANG Fan, , LI Yaojian, , LIU Peiwen,
Abstract : The secondary fly ash problem in the application process of fly ash of municipal solid waste incineration (shorter form, fly ash) melting treatment technology has become a constraint. It is beneficial to the development of harmless and resource utilization technology of secondary fly ash by mastering the distribution law of salt in the gas phase product of fly ash melting, and it can be used as a reference for the design of tail gas purification equipment and operation. The fly ash released from
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-101
Title : Dynamic Point Transmit Beam Forming of Frequency Diverse Array Radar
LIU Yongze, , JING Haiming,
Abstract : Frequency diverse array (FDA) radar applies a small frequency offset between the adjacent elements to synthesize a range-angle-dependent beampattern. It is difficult to control the beam steering for the coupled time-variant beampattern. For this problem, the time-variant characteristic and point beam forming of FDA radar were mainly studied in the paper. Firstly, the characteristic of transmit beampattern of FDA using linearly increasing frequency increment was analyzed. Secondly, two signal mod
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-110
Title : Effect of Zr Addition on Microstructure and Wear Properties of CoCrCuFeMn High-entropy Alloy
MA Mingxing, , ZHU Dachuan, , WANG Zhixin, , LI Shangzhi, , DONG Chen,
Abstract : High entropy alloys break through the traditional alloy design concept with one or two elements as basic elements, and have a simple phase structure and excellent comprehensive performance prepared by equimolar ratio or near equimolar ratio, which is expected to further expand the performance limit and application of metal materials. In order to study the effect of element doping on phase structure, microstructure and wear resistance, CoCrCuFeMn and CoCrCuFeMnZr high entropy alloys with equal mo
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-103
Title : Erosion and Breach of Landslide Dam Based on Physical Model Tests
XIE Chen, , LI Congjiang, , YANG Xingguo, , FAN Gang, , LI Haibo, , ZHOU Jiawen,
Abstract : China is one of the countries with the most serious disasters of dammed lakes, where the dammed lakes pose a great threat to the safety of people’s lives and properties among the upstream inundated area and the downstream outburst flood routing area. A deep understanding of the scouring and breaching processes of landslide dam can provide important scientific and technological basis for the design of emergency discharge channel and the formulation of downstream emergency measures. Accordin
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-102
Title : Experiment of the Mixture Ratio of Magnesium-based Foam Concrete
HAO Yunhong, , LI Yangrui, , QIN Lida, , SUN Hao, , WU Zhuoxuan,
Abstract : Three kinds of magnesium-based foamed concrete with dry density grade A05 were prepared by chemical foaming with magnesium oxychloride cement, magnesium oxysulfide cement and magnesium phosphate cement as cementing materials respectively. By designing orthogonal tests, the influences of water/cement ratio, magnesium cement component ratio, retarder content, fly ash content and polypropylene fiber content on the compressive strength of three kinds of magnesia-based foamed concrete were determined
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-95
Title : Experimental Study of Local Scour Around an Downstream Inclined Pile Under Combined Waves and Current
CHENG Yongzhou, , WANG Xiaoguang, , LUO Wei, , HUANG Xiaoyun, , LYU Xing,
Abstract : With the rise of development and utilization of marine resources, inclined pile foundation with good horizontal bearing capacity has been widely used as marine structures such as cross-sea bridge, offshore platform and high pile wharf. Under the action of strong nonlinear superposition of wave and current, severe local scour will occur around the inclined pile, which will reduce the safety of the structure and even lead to structural damage. In order to understand the influence of inclination an
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-107
Title : Experimental Study on the Mechanical Response Mechanism of Different Unloading Rate to Coal Rock Mechanics
GAO Mingzhong, , WANG Mingyao, , XIE Jing, , LI Xinkai, , WANG Yingwei, , WANG Fei, , YANG Bengao, , ZHANG Zhaopeng, , LIU Junjun,
Abstract : A deep understanding of the loading and unloading rate effect of rock mass mechanical response under mining stress path is an important basis for defining the optimal advancing rate of actual working face. Based on the initial crustal stress environment of Pingdingshan mining area, the evolution law of stress under the condition of protective layer mining with the depth of kilometer was analyzed quantitatively. The research on the mechanical behavior of coal and rock mass under different unloadi
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-100
Title : Hybrid Decentralized Optimization of Dispatching Electrical Units with Consideration of Demand-side Response
CHENG Shan, , SHANG Dongdong, , DAI Jiang, , ZHONG Shiling,
Abstract : In order to alleviate the burden of continuous increasing energy consumption falling on the power system and solve the complex calculation problem in the joint dispatching of large-scale electrical equipment, a hybrid decentralized optimization of dispatching the large-scale controllable appliances and energy storage equipment considering demand side response was proposed in this paper. Firstly, two mathematical models of controllable electrical equipment load and energy storage equipment were e
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-104
Title : Influence Factor Analysis and Application of Ultrasonic Method for Identifying Cable Clamp Blot Axial Force in Suspension Bridge
CHEN Xin, , ZHU Jingsong, , YE Zhongtao, , YI Jianjun,
Abstract : To effectively evaluate the loss of axial force for the bolts in cable clamp of suspension bridge, the influence factors analyses and application of ultrasonic identification method for cable clamp blot axial force in suspension bridge were carried out. Firstly, the axial force calculation formula was established based on the acoustic elastic effect, and the accuracy of this formula was verified by experiments. Then, effects of the non-stress acoustic time difference and stress coefficient diffe
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-106
Title : Influence of Moisture Content on Concrete Mechanical Properties Under Microwave Irradiation
SHAO Zhushan, , ZHANG Pengju, , WEI Wei, , CHEN Wenwen, , ZHANG Hongliang,
Abstract : Microwave-assisted concrete aggregate recycling is a new green technology, with little pollution and low energy generated during the heating process. The influence of moisture content on the microwave heating effect and concrete strength weakening was explored, and the separation effect of aggregate and mortar in concrete after microwave heating was analysed. Different heating paths were utilized to heat the concrete test blocks to obtain their temperature rise characteristics, and the compressi
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-105
Title : Numerical Experiment of Flash Flood Related to Sediment Transport at Local Diverging-converging Sections in Mountainous Rivers
YAN Xufeng, , XU Zexing, , SUN Tong, , WANG Xiekang,
Abstract : Mountain rivers often carry a large amount of sediment in the process of flash floods and cause severe deformation of the riverbed. In particular, the riverbed of the wide and narrow rivers is adjusted sharply and the water level rises sharply, which can easily increase the risk of flood inundation in the widened rivers. The study of water and sediment transport and riverbed deformation in the evolution of mountain torrents is of great significance for flood control and disaster mitigation. In t
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-112
Title : Removal of Iohexol in Aqueous Solution by Photoreduction-Fe(?) Activated Persulfate System
LI Mian, , ZHANG Tianyang, , YANG Dan, , YE Ting, , XU Bin,
Abstract : Transition metal Fe2+ is the most economical, effective and environmentally friendly PS activation substance, but Fe2+ is prone to be oxidized and loses its activation ability, resulting in poor continuous effect of the Fe2+/PS system. In order to improve the efficiency of the Fe2+/PS system in oxidizing and degrading organic pollutants, iohexol, a commonly used iodinated X–ray contrast media in medical field, was taken as the target pollutant?and its degradation in four advanced oxidation
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-97
Title : Research Framework of the State-dependent Dilatancy Theory and Breach Evolution Law of Landslide Dam
CAI Zhengyin, , ZHONG Qiming, , HE Ning, , XIA Yunfeng, , ZHU Jungao,
Abstract : Landslide dams are usually formed instantaneously by natural forces, the accumulation bodies have the characteristics of complex space structure, wide gradation of dam materials, poor dam stability, and they are easy to fail under the flow erosion. As a major natural disaster of flood and drought, safety evaluation and disaster prediction of landslide dams have been the focus of attention by the scholars around the world, but many questions remain unanswered, which are mainly manifested in: 1) A
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-12-01-2021-113
Title : Simulation Model for the Laminar Plasma Jet Surface Quenching of the Rail Steel
YU Deping, , ZHANG Bin, , SONG Wenjie, , GUO Da, , PENG Keming,
Abstract : Surface quenching of the rail steel using the laminar plasma jet can increase its service life, but the treatment parameters can only be determined by the experimental methods currently, which is time-consuming and laborious. If a simulation model for the surface quenching process can be established to quickly predict the variation of the temperature field in the surface quenching process and the hardness distribution within the hardened zone, the optimal treatment parameters can then be obtaine
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