Impact of mortar deterioration on seismic safety of masonry arch dam

TAO Yuxiang; CHU Xinying; BIE Ye; WANG Biyu

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Impact of mortar deterioration on seismic safety of masonry arch dam

更新时间：2026-10-13

- Impact of mortar deterioration on seismic safety of masonry arch dam
- Vol. 0, Issue 4, Pages: 49-53(2026)
- 作者机构：
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  CLC： TV641.3&nbsp
- Online First：12 October 2026，
  
  Published：2026
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陶玉祥, 楚昕颖, 别烨, 王碧玉. 砂浆劣化对浆砌石拱坝抗震安全的影响分析[J]. 大坝与安全, 2026, 0(4): 49-53.

TAO Yuxiang, CHU Xinying, BIE Ye, et al. Impact of mortar deterioration on seismic safety of masonry arch dam[J]. 2026, 0(4): 49-53.
陶玉祥, 楚昕颖, 别烨, 王碧玉. 砂浆劣化对浆砌石拱坝抗震安全的影响分析[J]. 大坝与安全, 2026, 0(4): 49-53. DOI：

TAO Yuxiang, CHU Xinying, BIE Ye, et al. Impact of mortar deterioration on seismic safety of masonry arch dam[J]. 2026, 0(4): 49-53. DOI：

摘要

以中国东部某浆砌石双曲拱坝为研究对象，考虑冻融循环对砂浆劣化的效应，采用ABAQUS软件建立拱坝有限元模型，并分析砂浆劣化对其抗震安全的影响。计算结果表明：当前劣化程度下，坝体在地震作用下的变形和应力状态仍满足规范要求；但随着工程运行时间继续增加，坝体各位移分量和最大拉应力会持续增大，存在受拉损伤的风险；坝肩与两岸山体交接处是最薄弱部位，在大坝抗震设计中应加以重视。研究成果可为类似工程的抗震安全分析提供参考。

Abstract

A masonry double-curvature arch dam in eastern China is taken as study object

considering the effect of freeze-thaw cycles on mortar deterioration

the finite element model of the arch dam is es ⁃ tablished by using ABAQUS

and the impact of mortar deterioration on the seismic safety is analyzed. The calculation results show that the deformation and stress of the dam body under seismic condition still meet the specification requirements under current deterioration degree. However

with the continu ⁃ ous increase of operation time

the displacement component and the maximum tensile stress of dam body will continue to increase

and there is a risk of tensile damage. The junction between dam abutment and mountains on both banks is the weakest part

which should be taken seriously in the seismic design of dam. The study results can provide reference for seismic safety analysis of similar projects.

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