混凝土重力坝抗震配筋加固数值模拟分析

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (20) : 75-80.

论文

混凝土重力坝抗震配筋加固数值模拟分析

李静1，陈健云1，李雪雷2

作者信息 +

Numerical simulation of seismic reinforcement effects for concrete gravity dams

LI Jing1，CHEN Jian-yun 1，LI Xue-lei2

Author information +

文章历史 +

摘要

针对地震作用下重力坝损伤开裂直接影响大坝安全问题，以Koyna水坝为研究对象，提出两种不同抗震配筋形式，利用混凝土塑性损伤开裂模型计算不同配筋方案混凝土重力坝地震响应。采用钢筋混凝土嵌入式模型考虑钢筋加强作用，据断裂能守恒原理调整混凝土软化段曲线，获得强化后混凝土本构。数值分析结果验证在坝体薄弱部位进行抗震配筋的必要性与实用性。

Abstract

Damage and Crack were the key factors that affecting the dam’s safety under seismic excitation. Take Koyna arch dam as example, two different forms of seismic reinforcement schemes are presented. According to the plastic-damage concrete damage model, and based on the embedded model of reinforced concrete, the seismic responses of concrete gravity dam are calculated under different reinforcement schemes. The results verified the necessity and practicality arranging reinforcement for seismic resistance at the weak parts of the dam.

导出引用

李静;陈健云;李雪雷. 混凝土重力坝抗震配筋加固数值模拟分析[J]. 振动与冲击, 2014, 33(20): 75-80

LI Jing;CHEN Jian-yun;LI Xue-lei. Numerical simulation of seismic reinforcement effects for concrete gravity dams[J]. Journal of Vibration and Shock, 2014, 33(20): 75-80