Integrated multi-type sensor placement and response reconstruction method for high-rise buildings under unknown seismic loading

2018 ◽  
Vol 27 (6) ◽  
pp. e1453 ◽  
Author(s):  
Rongpan Hu ◽  
Youlin Xu ◽  
Xiao Lu ◽  
Chaodong Zhang ◽  
Qilin Zhang ◽  
...  
Keyword(s):  
Sensor Placement ◽  
Seismic Loading ◽  
Reconstruction Method ◽  
High Rise ◽  
Response Reconstruction

Optimal Sensor Placement for Substructural Response Reconstruction

2014 ◽  
Vol 81 (6) ◽  
Author(s):  
Q. Ye ◽  
S. S. Law
Keyword(s):  
Degrees Of Freedom ◽  
Sensor Placement ◽  
Dynamic Responses ◽  
Reconstruction Method ◽  
Optimal Sensor Placement ◽  
Reconstruction Process ◽  
Response Reconstruction ◽  
Sensor Configuration ◽  
The Time Domain ◽  
Interface Forces

In an existing substructural dynamic response reconstruction method (Li, J., and Law, S.S., 2011. “Substructural Response Reconstruction in Wavelet Domain,” ASME J. Appl. Mech., 78(4), p. 041010) developed by Law, two sets of sensors are needed for the reconstruction of dynamic responses at selected degrees-of-freedom. A method to find the optimal sensor placement is presented in this paper for the substructural response reconstruction. It is based on the effective independence method but in the time domain. Unlike previous methods on sensor placement, two sets of optimal sensor placement are needed with the first set for estimating the interface forces between substructures, and the second set for reconstructing the responses. Sensors that capture the most information of the interface forces will be selected into the first set, and the subsequently estimated interface forces are used to reconstruct the responses at the second set of selected degrees-of-freedom. The selection of the second set of sensors is based on the least measurement noise effect in the response reconstruction process. A box-section bridge deck is adopted in the simulation studies. Numerical simulations with the forward and backward sequential sensor placement methods show that the proposed method could give reasonable predictions with smaller error in the reconstructed responses, and sensor locations along the major directions of the interface forces should be selected into the first or the second set of sensor configuration.

Multi-Type Sensor Placement for Multi-Scale Response Reconstruction

2013 ◽  
Vol 16 (10) ◽  
pp. 1779-1797 ◽  
Author(s):  
Songye Zhu ◽  
Xiao-Hua Zhang ◽  
You-Lin Xu ◽  
Sheng Zhan
Keyword(s):  
Sensor Placement ◽  
Multi Scale ◽  
Scale Response ◽  
Response Reconstruction

Optimal sensor placement for health monitoring of high-rise structure using adaptive monkey algorithm

2014 ◽  
Vol 22 (4) ◽  
pp. 667-681 ◽  
Author(s):  
Ting-Hua Yi ◽  
Hong-Nan Li ◽  
Gangbing Song ◽  
Xu-Dong Zhang
Keyword(s):  
Health Monitoring ◽  
Sensor Placement ◽  
Optimal Sensor Placement ◽  
High Rise

Optimal Sensor Placement for High-Rise Building via Genetic Algorithms and Improved Information Matrix Criterion

2011 ◽  
Vol 368-373 ◽  
pp. 1653-1659
Author(s):  
Shu Lin Zhan ◽  
Fang Huang ◽  
Jun Ying Lai
Keyword(s):  
Genetic Algorithms ◽  
Information Matrix ◽  
Sensor Placement ◽  
Independent Method ◽  
Frame Structure ◽  
Optimal Placement ◽  
Modal Assurance Criterion ◽  
High Rise ◽  
Integer Array ◽  
Optimum Solution

To improve the accuracy of parameter identification and to reduce the test cost in the high-rise structure health monitoring systems , the paper proposes an optimal placement method combines genetic algorithms with improved information matrix criterion (GA-IIM). With traditional improved effective independent method (EFI-DPR), it is easily trapped into bureau of optimum solution, and the proposed method can resolve this problem. The solutions were coded by a two-dimensional integer array, each line stored a feasible solution and compulsory mutation was adopted to avoid the solution reappeared in the same position. To improve the convergence speed, each generation of optimal group was kept to the next one to participate in the competition. With the improved information matrix criterion embedded in the genetic algorithms, the placement design was produced. This technique was used to optimize the sensor placement of a nineteenth layer frame structure. Comparing the optimized sensor placement of the proposed method with that of improved effective independent method by the modal assurance criterion and the mean square error, the proposed method performs better.

Numerical and Experimental Study of Clearance Nonlinearities Based on Nonlinear Response Reconstruction

2017 ◽  
Vol 13 (2) ◽  
Author(s):  
Jie Liu ◽  
Bing Li ◽  
Huihui Miao ◽  
Anqi He ◽  
Shangkun Zhu
Keyword(s):  
Nonlinear System ◽  
Dynamic Response ◽  
Nonlinear Response ◽  
Reconstruction Method ◽  
Beam Model ◽  
Graph Method ◽  
Displacement Response ◽  
Nonlinear Force ◽  
Response Reconstruction ◽  
Clearance Nonlinearity

With the growing structural complexity and growing demands on structural reliability, nonlinear parameters identification is an efficient approach to provide better understanding of dynamic behaviors of the nonlinear system and contribute significantly to improve system performance. However, the dynamic response at nonlinear location, which cannot always be measured by the sensor, is the basis for most of these identification algorithms, and the clearance nonlinearity, which always exists to degrade the dynamic performance of mechanical structures, is rarely identified in previous studies. In this paper, based on the thought of output feedback which the nonlinear force is viewed as the internal feedback force of the nonlinear system acting on the underlying linear model, a frequency-domain nonlinear response reconstruction method is proposed to reconstruct the dynamic response at the nonlinear location from the arbitrary location where the sensor can be installed. For the clearance nonlinear system, the force graph method which is based on the reconstructed displacement response and nonlinear force is presented to identify the clearance value. The feasibility of the reconstruction method and identification method is verified by simulation data from a cantilever beam model with clearance nonlinearity. A clearance test-bed, which is a continuum structure with adjustable clearance nonlinearity, is designed to verify the effectiveness of proposed methods. The experimental results show that the reconstruction method can precisely reconstruct the displacement response at the clearance location from measured responses at reference locations, and based on the reconstructed response, the force graph method can also precisely identify the clearance parameter.

Behaviour of Shearwalls with Slabs and Openings

2012 ◽  
Vol 602-604 ◽  
pp. 1566-1569
Author(s):  
Yun Cheul Choi ◽  
Hyun Ki Choi ◽  
Chang Sik Choi
Keyword(s):  
Shear Walls ◽  
Seismic Loading ◽  
Critical Section ◽  
Economic Advantage ◽  
Cyclic Loads ◽  
Test Results ◽  
Lateral Loads ◽  
Accurate Analysis ◽  
High Rise ◽  
Apartment Buildings

Generally because of the economic advantage and stable behavior in seismic loading, shearwalls combined with coupling slabs are widely used in high-rise apartment buildings. When analyzing such structures for lateral loads, however, the question of the actual stiffness and strength of the coupling slabs arises. For more accurate analysis approach, an experimental investigation was conducted with half-scale representations of the reinforced concrete shearwalls with the opening and coupled with slabs were subjected to cyclic loads. The test results of opening installed specimen, severe decrease of strength was observed. The decrease of strength of the shear walls by installation of openings shows a great deal of difference compared to previous researches. This is because flexural capacity of the slabs is working as coupling elements for the shear walls. The critical section of coupling slabs that works as coupling elements for shear walls was a little different from the results of previous researches.

Sign in / Sign up

Export Citation Format

Share Document