bluuebunny/crossref_metadata_2025_split huggingface dataset:
Formation Process and Driving Mechanism of Urban Waterlogging in the Greater Bay Area
Authors: Chen Yilong , Xu Zhong , Liu Junxiang , Xu Zibo , Fan Weinan 
Published: April 2023

Abstract
With the acceleration of the urbanization process, the degree of “hardening” of the urban surface becomes higher, and the storage capacity is weakened seriously, so it is easy to cause urban waterlogging. Doing a good job in urban flood control and waterlogging control and reducing disaster losses has become the top priority of disaster prevention and mitigation in our country in the 21st century. This study takes the Chebeichong watershed in Guangzhou as the research area, and based on quantitative observation data, summarizes the formation mechanism of urban waterlogging in the Guangdong-Hong Kong-Macao Greater Bay Area(GBA), and proposes the key driving factors for the formation of urban waterlogging in the GBA. It will provide theoretical and technical support for the study of effective urban waterlogging forecasting methods.
Corrosion Cause Analysis of a Surface Pipeline Flange
Authors: Ji Nan , Li Changliang , Wang Peng , Zhu Lijuan , Feng Chun 
Published: April 2023

Abstract
Corrosion was found on the inner wall and sealing groove end face of a surface pipeline flange in an oilfield in western China after one year’s service. Corrosion causes were investigated by physical and chemical property tests, metallographic examination, scanning electron microscope, scanning electron microscopy(SEM) inspection, energy disperse spectroscopy(EDS) analysis and X-ray diffraction(XRD) analysis. The results showed that the chemical composition and mechanical properties of the flange were all in accordance with the corresponding parameter requirements, and the corrosion phenomenon was mainly attributed to CO2 corrosion. High temperature and high medium flow rate also had a big influence on the acceleration of the corrosion process. Corrosion of the sealing groove end face was attributed to galvanic corrosion, the corrosion potential difference between the flange and gasket was the main reason for the galvanic corrosion.
Analysis of the Influence of UNMANNED Aerial Vehicles Stationed in Tower Airport on Tower Structure Safety
Authors: Gao Song , Xiao Tan , Wang Qianwen 
Published: April 2023

Abstract
In order to solve the problems of uav inspection, such as limited endurance and difficulties in long-distance communication and control, it is proposed to set a steel structure platform on the tower as the airport of UAV. The installation of the tower airport will increase the permanent load and generate additional wind load, which may adversely affect the tower. In this paper, the tower of 220kV overhead transmission line is taken as an example to establish the finite element models of uav platforms at different positions of the tower and with different tower types. Considering the load effect of the tower and the platform, the maximum displacement and maximum stress of the initial model of the tower and the model after the installation of the platform are summarized and analyzed. The results show that the uav platform under the tower body has little influence on the safety performance of the tower, meets the safety operation requirements of the tower, and provides a new idea for the intelligent inspection of the transmission line uav.
Design of Wall Climbing Robot Device based on Bionics
Authors: Huang Guiyun , Ji Jun , Shi Mengdi , Li Yong 
Published: April 2023

Abstract
Based on the principles of bionics and vacuum adsorption, a bionic wheeled robot is preliminarily constructed. The driving part of the device is fully pneumatic. The operation process depends on the circulation of suction and exhaust of each set of suction cups, Achieve the function of adsorption and climbing. It is a pneumatic wall climbing robot device. The device not only has the advantages of fast moving speed and high efficiency of wheeled robot, but also has the advantages of bionic wall climbing robot. Wall climbing robots can climb on vertical walls. After loading various tools, it can replace workers to carry out some complex or dangerous work. it is widely used in all walks of life.
Comparative Analysis of Isolation Effects of Laminated Rubber Bearing and Composite Rubber Bearing Used in Bridges with Different Pier Heights
Authors: Jiang YF , Zhong HQ , Deng XW , Dang XZ 
Published: April 2023

Abstract
In order to reveal the vibration isolation performance of new composite rubber bearings (CRBs), this paper establishes a numerical model of composite rubber bearings based on SAP2000, and studies the seismic response of bridges supported by LNB and CRB at different pier heights. The results show that compared with LNB, CRB can effectively reduce the shear force and bending moment of the pier without increasing the structural displacement.Compared with LNB, the advantages of CRB in isolation performance vary little with pier height, which indicates that CRB has broad application prospects..
Seismic Design Optimization of Frame-multi-ribbed Composite Wall Structure
Authors: Liu J , zheng RL , Zeng WH 
Published: April 2023

Abstract
To explore the optimization seismic design of frame-multi-ribbed composite wall structure, firstly the finite element model of a six story frame-multi-ribbed composite wall structure is established based on the software of SAP2000. Secondly the critical design parameters of multi story frame-multi-ribbed composite wall structure under seismic action are analysised using finite element analysis software. Finally the seismic response of the structure under different rib combinations and the optimal arrangement rule of the structure are studied. The results reveals that the lateral stiffness of the structure cannot be effectively improved by increasing the number of rib grids of the multi ribbed composite wall. The results can provide a theoretical basis for the design of the multi story frame-multi-ribbed composite wall structure in the medium and high earthquake intensity area.
Research on Bearing and Seismic Isolation Design of Extrodosed Cable-stayed Bridge With Ultra-wide A-type Tower in High-intensity Areas
Authors: Huai CZ , Li C , Yu FL 
Published: April 2023

Abstract
In order to improve the support and isolation performance of the escape cable-stayed bridge with super wide A-type tower in high-intensity areas, the paper takes Jingyuan Jinshatan Yellow River Bridge as the background, based on the finite element method, and takes the design of 20000 ton isolation bearing as the case, optimizes the design parameters, structural composition and friction pair settings of the bearing, and develops the actual bearing to meet the needs of the project by combining simulation analysis and experimental testing. The results of time history analysis show that the displacement of the strength support seat at the bottom of the pier and the expansion joint at the beam end can meet the design requirements.
Experiment Design of Precast Small Box Girder and CIP Hidden Bent Cap Structural System
Authors: Huang XF , Bu ZY , Xu SL 
Published: April 2023

Abstract
In order to effectively reduce the structure height, this paper proposes a structure with integral connection of precast small box girders and CIP hidden bent cap. A 40% scale specimen was designed suitable for hidden bent cap system. To test the feasibility of the connection, a single girder model of test unit was established using finite element analysis program. The analysis results were used to predict the test results and to ensure that the behavior of the test specimens during the test was consistent with that of the prototype. The simulation results showed that the overall stress distribution was presented tensile at the top and compressive at the bottom, with the ratio of maximum tensile stress to maximum compressive stress at approximately 33%.
Design of Energy Absorption Device for A Separator
Authors: OuYang LG , Huang F , Long TM , Wang G , Wang L , Yuan R 
Published: April 2023

Abstract
To verify the working performance of the energy absorption device, CAE simulation software is used to simulate the working process of the energy absorption device. Firstly, the three-dimensional modeling software is used to establish the three-dimensional model of the energy absorption device, and then grid division software is used to divide the established three-dimensional model. Finally, the simulation calculation is carried out in the CAE simulation software. The results show that the speed of the high-speed stone with a diameter of 110mm is reduced from 22.3m/s to 10.2m/s under the action of the energy absorption device, and its energy is reduced by 81.5%. The working effect of the energy absorption device meets the expected requirements. This study provides a great reference value for the design of energy absorption devices.
Design of New Fan-Shaped Combined Wear-Resistant Plate for Super Tonnage Spherical Bearing
Authors: Ning XL , Gu XH , Xia JY , Leng XY , Zhang XF 
Published: April 2023

Abstract
In order to improve the bearing and wear resistance of the sector composite wear plate, a new sector composite wear plate is designed based on the finite element method. By establishing the finite element calculation models of integral, segmented small circle inlaid and new fan-shaped combined anti-wear plate ball bearings, the pressure bearing and wear resistance of three types of wear plates are analyzed, calculated and compared. The results show that the three types of wear plates can meet the pressure bearing capacity. The pressure bearing capacity of the new fan-shaped composite wear-resistant plate is similar to that of the integral type, which is superior to that of the segmented small circle inlaid type. Because of the advantages in structure, processing and installation of the new fan-shaped composite wear-resistant plate, it is particularly worth popularizing and applying in the super spherical bearing.
Seismic Characteristics of Integral Abutment Bridge with Rigid-Flexible Combined Abutment Based on Shaking Table Model Test
Authors: Huang HY , Li L , Liu F , Zhou GJ 
Published: April 2023

Abstract
Aiming at the problem that the strong structure-soil interaction of rigid abutment integral bridge and semi-flexible abutment integral bridge, a new integral abutment bridge with rigid-flexible abutment was proposed, and the shaking table model test was carried out to study its seismic performance. The test result shows that at the seismic fortification intensity 6, the specimen are relatively intact, and no crack was generated, which shown the integral abutment bridge with rigid-flexible combined abutment has good seismic performance. The first-order and second-order frequency of integral abutment bridge with rigid-flexible combined abutment are about 5.0 Hz and 10 Hz, respectively. The damping ratio coefficient of rigid-flexible combined abutment-pile-soil system is about 0.18~0.25. The soil-rigid-flexible combined abutment-pile interaction amplified from 10.71 times the pile diameter above the bottom of the pile foundation. The maximum dynamic amplification factor of specimen and soil are located at the abutment bottom and the soil surface, respectively.
Numerical Study of Tsunami Force on Superstructure of Offshore Rigid Frame Box Girder Bridge
Authors: Gu Y , Yu AH , Zheng FD 
Published: April 2023

Abstract
Offshore bridges need to bear complex wave and current loads and face the threat of extreme loads such as tsunamis. Potential tsunamis will have disastrous effects on coastal areas. Compared with conventional beam bridges, there are few studies on rigid frame box girder bridges. In this paper, based on a continuous rigid frame box girder bridge in the offshore area, the parameters of tsunami impact force are analyzed. First, based on Stoke theory and water level in the storage area, the water level in the static water area and quasi stable area in the dam break wave working conditions are obtained, and 12 kinds of dam break wave working conditions are preliminarily proposed to be used for the background bridge. Then, according to the determined simulation working conditions, the box girder dam break impact numerical model is simulated. According to the calculated results, the stress characteristics of the box girder under the tsunami impact are described in the way of time history stage division, and on this basis, The stress mechanism is analyzed from the whole level and local level. The results show that on the whole level, the variation of horizontal force and vertical force with time can correspond to the variation of dam break flow around the box girder. At the local level, the horizontal wall boundary bears the vertical force, the vertical wall boundary bears the horizontal force, and the inclined wall boundary bears both the horizontal force and the vertical force. In addition, negative pressure is the cause of suction on the wall boundary. It provides a reference for the calculation and analysis of tsunami load of offshore rigid frame box girder bridges, the identification of bridge failure modes and the formulation of protective measures.
An Accurate Subspace Clustering Model for Unsupervised Noise-laden Hyperspectral Image Segmentation
Authors: Lin ZX , Jiang YH , Wu CM , Wang JG , Yan S 
Published: April 2023

Abstract
The hyperspectral image acquisition in realistic situations is accompanied by a lot of noise, which dramatically interferes with the discriminative power of the clustering model. In this paper, a superpixel segmentation 3D regularized subspace clustering model (SS3D-SSC) is provided, which uses a superpixel segmentation method to obtain the most representative pixel in each tiny region and use it as a representative to replace other pixels in the same area, and then use sparse subspace clustering to perform the subsequent image segmentation, the proposed method in this paper is used in Indian Pines.The reliability of the algorithm is confirmed on the Indian Pines, Salinas and Pavia University datasets. Compared with the most advanced SSC-based algorithms, even using graph convolution subspace clustering, SS3D-SSC model has better classification performance and anti-noise ability.
Numerical Analysis of Elastomeric Bearings Equipped with Steel Ring Restrainers
Authors: wang ZF , Wu H , Zhao TF , Yang C , Zhang Q 
Published: April 2023

Abstract
In order to improve the seismic performance of bridges, the design of high-performance isolation bearings can effectively reduce the displacement response caused by earthquakes. This paper proposes a novel seismic isolation bearing (EB-SRRs) to prevent the unseating of bridges. Based on the finite element (FE) analysis method, the mechanical properties of EBSRR are simulated and analyzed, and the performance of EB is compared experimentally. The experimental results show:(1) When the shear strain reaches 93%, the reaction force provided by EB SRRs model is gradually higher than that of EB model due to the activation of SRRs; (2)With the continuous increase of horizontal displacement, the reaction force of EBSRR model increases significantly; (3)SRR increases the area of hysteresis loop, and the increased area in each loop increases with the increase of load displacement
A Multivariate Time Series Anomaly Detection Method Based on Clustered Particle Swarm Optimization
Authors: Gao R , Ding YR , Wang Y 
Published: April 2023

Abstract
Due to the advent of 5G and the integration of sensors, sensor nodes need to collect data from multiple sources simultaneously.Traditional anomaly detection methods for single attribute time series detect multivariate data, low detection accuracy, and significant node energy consumption. To avoid these problems, this paper provides an improved FCM multivariate time series clustering method based on the sliding window. Based on the CPSO optimal weight, the reconstruction error realizes anomaly detection. Experiments on different datasets demonstrate the effectiveness of the algorithm. Moreover, compared with the three classical methods, the results show that the proposed algorithm has higher detection accuracy and accuracy.
Extremely Weak Signal Detection Algorithm of Multi-Pixel Photon Detector
Authors: yang Y , Zhao PR , Wang XB , zhang JL , Yang FM , Min ZW 
Published: April 2023

Abstract
For the detection of extremely weak signals in underwater long distance wireless optical communication, the Geiger mode of the multi pixel photon detector has serious pulse superposition effect and Poisson noise, which leads to counting difficulties and affects the measurement accuracy. This paper proposes a deconvolution joint generalized Anscombe transform (DUGAT) detection algorithm. First, the deconvolution filtering technology is used to process the weak signal to reduce the superposition effect and converge the pulse width. Secondly, the noise signal of Poisson+Gaussian (P+G) distribution is converted into Gaussian variable by using generalized Anscombe transform (GAT), which is equivalent to additive Gaussian noise signal. Finally, the symbols are counted by hard decision algorithm. The experimental results show that the sensitivity of this algorithm is improved by 8.57dB and 9.95dB respectively compared with the traditional AR and ML detection algorithms.
Analysis on Reliability of Wind Barrier on High-speed Railway Bridge under Wind Load
Authors: Zhang T , Sun Q , Li YH , Zhang XF , Li PF 
Published: April 2023

Abstract
In order to guarantee the safety of wind barrier structure on the railway bridge and to prevent the overturning of wind barrier in the strong wind impacting on the normal operation of the train, the study on reliability of wind barrier is conducted. Taking the single side 4m wind barrier installed on the Lanzhou-Xinjiang second double-line railway bridge as an example, considering the randomness of natural wind velocity and train speed, based on the probabilistic theory analyze the reliability of the wind barrier structure system under the static wind load and dynamic wind load, and evaluate the wind barrier safety with the reliability index and failure probability of structural system. And parameter sensitivity analysis is performed to find out which factors are more important to the reliability of the wind barrier system. The research results show that the reliability index of the wind barrier system meets the requirements of the design specification, and the failure probability is small; the reliability index of the wind barrier system under the static wind load and dynamic wind load is more sensitive to the wind velocity than the train speed.
Analysis on the Seismic Behavior of RC Frame with Different Special-shaped Columns at the Bottom
Authors: wang JF , Zeng WH , lu CF 
Published: April 2023

Abstract
In order to study the seismic behavior of the bottom large-bay frame with different special-shaped columns, the numerical models of the special-shaped columns frame with ordinary, dark and square columns at the bottom are established using the finite element analysis in ANSYS. The three type special-shaped Frame are performed with nonlinear time-history dynamic method under earthquakes. The dynamic characteristics and seismic response of the three type RC Frame are conducted. The weak parts and the development of the plastic hinges on the end of beams and columns are discussed. The results show that the special-shaped frame with bottom square columns can overcome the weak phenomenon at the bottom, and provide outstanding seismic performance compare with the other two frames.The seismic behavior of the special-shaped columns frame with dark columns is better than the normal special-shaped columns, however it can not effectively overcome the weak parts of the bottom floor. The results can provide a theoretical basis for the engineering application of the frame with special-shaped columns.
Static Response of Self-anchored Suspension Bridge under Vehicle Load Considering Time-varying Effects
Authors: Du AX , Zhou GP , Fan J , Zhang YY , Geng ZW 
Published: April 2023

Abstract
In order to study the structural state of the bridge under the influence of time-varying effect, the response of the concrete self-anchored suspension bridge under vehicle load and temperature load during the 30-year operation period is studied, through field load test and finite element analysis based on ANSYS refined spatial solid model. The results show that with the increase of the service life of the bridge, the bottom plate of the box chamber of the main girder gradually tends to be tensioned in the longitudinal direction of the bridge, and the horizontal preload stress of the main girder gradually loses when the bridge is completed; The transverse bridge stress at the junction of the outermost bottom of the box chamber and the web tends to be tensile, while the transverse bridge stress at the measuring point of the inner bottom plate gradually increases. The change value of the cable force of the hanger is obviously affected by the restraint mode of the support. Affected by the main tower support, the cable force of the hanger adjacent to the main tower decreases greatly. During the operation of the bridge, the working conditions of the mid span and east span hangers shall be monitored.
Analysis on Load Capacity of Grouted Ducts Connected Precast Piers under Action of Bi-directional Compression and Bending
Authors: Chen HC , Sun J , Lin FJ , Yan S , Xia ZH 
Published: April 2023

Abstract
In order to improve the accuracy of the calculation method of the bearing capacity of the prefabricated pier connected by the grouting bellows, the calculation formula of the ultimate bearing capacity of assembled bridge piers with grouting corrugated pipe connection under the action of bi-directional compression and bending is deduced. Firstly, the quasi-static testing of cast-in-place piers and prefabricated piers under unidirectional and bi-directional loading are introduced, the ultimate bearing capacities are compared. Secondly, according to the arrangement position of the neutral axis and the static force balance relationship, the calculation formulas of the ultimate bearing capacity in two directions under the action of constant axial force are deduced. Finally, the calculation formulas of derivation were verified by the experimental results, and the calculated yield surfaces of the prefabricated piers with grouting corrugated pipe connection under different axial forces are established. The results show that the experimental results are relatively close to the numerical calculation results, the average error does not exceed 10%, and the P-Mx-My three-dimensional yield surface provided a relatively simple and quick method for the cross-sectional safety verification of precast segmental piers with Grouting Corrugated Pipe Connection.
Bonding Performance of Epoxy Modified Cement-based Adhesive
Authors: Xiang W , Zhang H , Chen P , Zhao Q 
Published: April 2023

Abstract
To improve the bonding properties of cement-based adhesives, epoxy resin is added in this study. The effects of various mix parameters, including epoxy, PVA powder, HPMC, silica fume, and synthetic fibers, and water contents, on the mechanical performance of epoxy modified cement-based adhesives are investigated. Experimental results show when the content of epoxy exceeds 15% of the cement by weight, the bond strength improves by more than 90%. But excessive epoxy adversely reduces the compressive strength of cement-based adhesive. The addition of PVA powder and HPMC also enhances bond strength. Water binder ratio and silica fume mainly affect the compressive strength of the cement-based adhesive. The addition of synthetic fibers greatly improves the toughness and crack resistance of the material. This study provides a solid basis for the optimization of mix compositions of cement based adhesives in various civil engineering applications.