Horizontal displacement estimation of high-rise structures by fusing strain and acceleration measurements

Zhou, Qi; Li, Qiusheng; Han, Xu-Liang; Wan, Jun-Wen; Xu, Kang

doi:10.1016/j.jobe.2022.104964

Cited by 9 publications

(8 citation statements)

References 18 publications

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“…(𝑥 1 , 𝑦 1 ) = (𝑅 0 𝑠𝑖𝑛 𝜃 0 , 𝑅 0 − 𝑅 0 𝑐𝑜𝑠 𝜃 0 ) (10) Take the tangent line of the end point O1 of the first circular arc as the x1 axis, and then make the y1 axis perpendicular to the x1 axis through the point O1 to form a new coordinate system x1-y1. By fitting the second segment of circular arc curve by the same method, the coordinates of O2 in the coordinate system x1-y1 could be obtained.…”

Section: Beam Displacement Reconstruction Using Fbg Strainometersmentioning

confidence: 99%

“…Structural vibration morphology monitoring techniques mainly include structural strain sensing techniques [4] [5] , realtime displacement reconstruction techniques [6] , structural morphology reconstruction techniques [7][8][9] , and data fusion techniques [10] . In particular, the structural strain sensing technique involves designing the arrangement of the strain sensor arrays to obtain the strain distribution information of the structure.…”

Section: Introductionmentioning

confidence: 99%

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A Method of Structural Vibration Deformation Monitoring Based on FBG Strainmeter and Accelerometer Array

Zhao,

Cheng,

Jia

et al. 2023

IEEE Access

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The monitoring of displacement and strain distribution of vibrating structures is very important for maintaining structural safety. In this paper, a monitoring method of structural vibration deformation based on Fiber Bragg Grating (FBG) strainmeter array and accelerometer array is proposed for two different cases of whether the structure surface can be directly pasted with FBGs. In addition, a dynamic deformation estimation based on strain and acceleration data fusion, and a vibration morphology monitoring algorithm based on displacement reconstruction combined with finite element simulation results are proposed, respectively. An FBG accelerometer is designed based on an equal strength beam, for which the geometric parameters are determined by finite element simulation. The test results show that the accelerometer has a stable operating frequency band of 3-20Hz, an average sensitivity of 70pm/g, and a resonant frequency of 56Hz, which provides excellent linearity and consistency. The vibration deformation monitoring experiments were carried out on a cantilever aluminum plate. The results indicate that the measuring system is able to accurately sense the shape change of the structure in real-time with a displacement measurement error is <6%. For the aluminum plate structure without FBG on the surface, the measuring system successfully reconstructed the displacement and strain distribution with a strain measurement error is <10%.

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Section: Beam Displacement Reconstruction Using Fbg Strainometersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Method of Structural Vibration Deformation Monitoring Based on FBG Strainmeter and Accelerometer Array

Zhao,

Cheng,

Jia

et al. 2023

IEEE Access

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show abstract

“…This research examines the results of the proposed technique. The research focuses on a building that is 600 meters in height [18].…”

Section: Introductionmentioning

confidence: 99%

The influence of the layout of shear walls on internal forces and horizontal displacements in an 18-story building

Lam

2024

2576-8484

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High-rise buildings are highly sensitive to horizontal loads. Therefore, any changes made to the arrangement, size, or shape of the shear walls will have significant effects on the strength and performance of the building. In this article, the author conducted an investigation on specific cases: walls located at the corner of the building, walls present in both directions, and reinforced concrete frames. The results of the analysis suggest that changing the placement of walls located at the four corners of the structure will significantly influence the bending moment, shear force, and axial force observed at the base of the columns. At the same time, it also affects the top displacement based on the direction of the main bearing of the structure. The survey results include diagrams showing the bending moment, the shear force, and the axial force in the main frame of the building. These values are then compared with each other at BoC in the main frame. It is evident that the bending moment and shear force values for Case 1 and Case 3 are significantly lower compared to Case 2. This suggests that Case 1 and Case 3 are the most favorable options for calculating and designing the structure of this high-rise building.

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“…Due to the high land price, limited land resources, and the rapidly growing economy’s demand for landmark buildings, high-rise and super high-rise buildings have become one of the effective means to address the space demand of urbanization and economic growth [ 1 , 2 , 3 ]. China is home to 5 of the world’s top 10 skyscrapers [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Research on Autonomous and Collaborative Deployment of Massive Mobile Base Stations in High-Rise Building Fire Field

Li,

Huang,

Liang

et al. 2023

Sensors

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High-rise building fires pose a serious threat to the lives and property safety of people. The lack of reliable and accurate positioning means is one of the main difficulties faced by rescuers. In the absence of prior knowledge of the high-rise building fire environment, the coverage deployment of mobile base stations is a challenging problem that has not received much attention in the literature. This paper studies the problem of the autonomous optimal deployment of base stations in high-rise building fire environments based on a UAV group. A novel problem formulation is proposed that solves the non-line-of-sight (NLOS) positioning problem in complex and unknown environments. The purpose of this paper is to realize the coverage and deployment of mobile base stations in complex and unknown fire environments. The NLOS positioning problem in the fire field environment is turned into the line-of-sight (LOS) positioning problem through the optimization algorithm. And there are more than three LOS base stations nearby at any point in the fire field. A control law which is formulated in a mathematically precise problem statement is developed that guarantees to meet mobile base stations’ deployment goals and to avoid collision. Finally, the positioning accuracy of our method and that of the common method were compared under many different cases. The simulation result showed that the positioning error of a simulated firefighter in the fire field environment was improved from more than 10 m (the positioning error of the traditional method) to less than 1 m.

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Horizontal displacement estimation of high-rise structures by fusing strain and acceleration measurements

Cited by 9 publications

References 18 publications

A Method of Structural Vibration Deformation Monitoring Based on FBG Strainmeter and Accelerometer Array

A Method of Structural Vibration Deformation Monitoring Based on FBG Strainmeter and Accelerometer Array

The influence of the layout of shear walls on internal forces and horizontal displacements in an 18-story building

Research on Autonomous and Collaborative Deployment of Massive Mobile Base Stations in High-Rise Building Fire Field

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