Study on influence of construction and water storage process on valley deformation of high arch dam

Yang, Xiang; Ren, Xiaobing; Ren, Qingwen

doi:10.1007/s10064-022-02749-1

Cited by 11 publications

(2 citation statements)

References 29 publications

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“…Meanwhile, the CCTSR method is high efficiency because the damage information can be rapidly presented without complex requirements and steps in damage identification. The main conclusions can be drawn as follows (1) The CCTSR method accurately captures the cracked positions in transverse joints of arch dams and assesses the severities of cracks based on the differences of the seismic accelerations expanded in the wavelet domain. Meanwhile, the identification results based on the tangential accelerations are more reliable than those based on the normal accelerations.…”

Section: Discussionmentioning

confidence: 99%

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A novel method for identifying damage in transverse joints of arch dams from seismic responses based on the feature of local dynamic continuity interruption

Wei

Shen

Cao

et al. 2023

Smart Mater. Struct.

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Without the difficulty of applying particular excitations on arch dams, a method using the correlation coefficients of time-scale representations (CCTSRs) of seismic responses to identify the damage in transverse joints is proposed. The identification of damage using the CCTSR method is characterized by comparing the time-scale representations (TSRs) of paired seismic accelerations measured from two neighbouring points crossing the transverse joints horizontally. With the CCTSR method, the TSRs of measured seismic accelerations are produced with the continuous wavelet transform; the comparison of the TSRs is carried out by calculating the correlation coefficients. The correlation coefficients of the paired TSRs are combined with the defined damage intervals to evaluate the positions and severities of the damage. The method’s feasibility is numerically verified via the identification of the damage in transverse joints by discussing the effects of the wavelet functions, seismic excitations, and noise resistance. The method’s effectiveness is experimentally validated via the detection of the damage in transverse joints of a scaled arch dam model subjected to artificial seismic loads. The proposed CCTSR method can localize the positions of various damage scenarios and quantify the damage severities caused by progressive seismic loads.

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Section: Discussionmentioning

confidence: 99%

“…water for irrigation and other utilizations [1,2]. Till now, a vast number of hydraulic resources in mountainous areas have been developed by widely constructing hydraulic infrastructures.…”

Section: Introductionmentioning

confidence: 99%