Analysis of cracking mechanism of concrete galleries in a super high arch dam

2021 ◽  
Vol 248 ◽  
pp. 113227
Author(s):  
Pengcheng Wei ◽  
Peng Lin ◽  
Haoyang Peng ◽  
Zongli Yang ◽  
Yu Qiao
Keyword(s):  
Arch Dam ◽  
High Arch Dam ◽  
Cracking Mechanism

scholarly journals Feedback Analysis and Prevention & Control Strategy of the Real Causes of the Gallery Cracks in Super-High Arch Dam

2021 ◽  
Author(s):  
Yaosheng Tan ◽  
Chunfeng Liu ◽  
Youzhi Liu ◽  
Jingtao Li
Keyword(s):  
Control Strategy ◽  
Safety Monitoring ◽  
Influential Factors ◽  
Arch Dam ◽  
High Arch Dam ◽  
Feedback Analysis ◽  
The Real ◽  
Actual Temperature ◽  
Cracking Mechanism ◽  
Cracking Process

Gallery cracks occur commonly in concrete dams, but their cracking mechanism has yet to be effectively revealed. In this paper, the actual temperature, stress change history and cracking process of a gallery area were uncovered, based on the safety monitoring data of cracks in a super-high arch dam. In addition, the basic development and change laws, as well as the corresponding cracking mechanism, were analyzed, and the real causes and influential factors of cracks at the site were revealed, which will provide a reference for the prevention of cracks in similar projects in the future.

scholarly journals Research on concrete temperature control measures in deep hole area of super high arch dam

2021 ◽  
Vol 826 (1) ◽  
pp. 012035
Author(s):  
Yuchen Fu ◽  
Yaosheng Tan ◽  
Chunfeng Liu ◽  
Lei Pei ◽  
Yajun Wang ◽  
...  
Keyword(s):  
Temperature Control ◽  
Arch Dam ◽  
Control Measures ◽  
Deep Hole ◽  
High Arch Dam ◽  
Hole Area ◽  
Concrete Temperature

scholarly journals Analysis of the influence of asymmetric geological conditions on stability of high arch dam

2021 ◽  
Vol 28 (1) ◽  
pp. 426-436
Author(s):  
Zelin Ding ◽  
Xuanyi Zhu ◽  
Hongyang Zhang ◽  
Hanlin Ban ◽  
Yuan Chen
Keyword(s):  
Safety Factor ◽  
Negative Impact ◽  
Decisive Role ◽  
Arch Dam ◽  
Test Method ◽  
Stable Operation ◽  
High Arch Dam ◽  
Reinforcement Scheme ◽  
Structural Plane ◽  
Geological Conditions

Abstract Geological conditions play a decisive role in the stability of arch dam engineering, and the asymmetric geological conditions of the abutment have a very negative impact on the safety of the arch dam. This article takes Lizhou arch dam as the research object, and determines that the arch dam is preliminarily affected by the geological asymmetric characteristics. Through the geomechanical model test method, the overload failure test of the Lizhou arch dam was carried out, and the resistance body, the instability deformation of the structural plane of the two dam abutments, and the influence of each structural plane on the dam body are obtained, and the safety factor is determined. According to the test results under the condition of asymmetric foundation of arch dam, for the structural plane which affects the geological asymmetry of the arch dam, the corresponding reinforcement measures are carried out. The feasibility of the reinforcement scheme is verified by the finite element method, and the safety factor after reinforcement is obtained. According to the results, it is suggested that some engineering measures can be taken to reduce the geological asymmetry between the two banks and ensure the safe and stable operation of the arch dam in the future.

Effect of the impounding process on the overall stability of a high arch dam: a case study of the Xiluodu dam, China

2015 ◽  
Vol 8 (11) ◽  
pp. 9023-9041 ◽  
Author(s):  
Danni Luo ◽  
Peng Lin ◽  
Qingbin Li ◽  
Dong Zheng ◽  
Hongyuan Liu
Keyword(s):  
Arch Dam ◽  
High Arch Dam ◽  
Overall Stability

Reasonable Strength Criterion Research of High Arch Dam Based on Brittle Failure Constitutive Relation

2014 ◽  
Vol 578-579 ◽  
pp. 964-967
Author(s):  
Zhi Qiang Wang ◽  
Wen Biao Liu
Keyword(s):  
Constitutive Relation ◽  
Brittle Failure ◽  
Concrete Strength ◽  
Safety Evaluation ◽  
Strength Criterion ◽  
Arch Dam ◽  
Dam Failure ◽  
Dam Safety ◽  
High Arch Dam ◽  
Triaxial Strength

The brittle failure finite element method is widely used in arch dam safety evaluation, but it also has some problems, the concrete strength criterion is different, the dam failure range is different. This article first introduces brittle failure constitutive relation and three strength criterions, then takes a high arch dam as an example to compute, obtains some conclusions that the relative failure range of foundation plane corresponds to blaxial strength criterion is slightly bigger than the result of uniaxial strength criterion, is almost the same as the result of triaxial strength criterion. Because the influence of the third principal stress is compressed stress to the dam crack is taken into account under multiaxial strength criterion, therefore using multiaxial strength criterion is more reasonable.

Study on deformation and force of a super high arch dam during impoundment period in Southwest China

2021 ◽  
Author(s):  
Yuchen Fu ◽  
Yaosheng Tan ◽  
Yu Hu ◽  
Chunfeng Liu ◽  
Lei Pei ◽  
...  
Keyword(s):  
Southwest China ◽  
Arch Dam ◽  
High Arch Dam

Research on abutment stability of high arch dam

2004 ◽  
pp. 1059-1065 ◽  
Author(s):  
Qing Zhang ◽  
Jiashou Zhou ◽  
Guojian Shao
Keyword(s):  
Arch Dam ◽  
High Arch Dam

Long-term deformation influence of slope and foundation to high arch dam

2014 ◽  
pp. 1919-1924
Author(s):  
Q Yang ◽  
Y Pan ◽  
Y Liu ◽  
Q Chang ◽  
L Cheng
Keyword(s):  
Arch Dam ◽  
High Arch Dam
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