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The Analysis of Adaptive Finite Element Methods about the Concrete Gravity Dam and the Consideration in Improving the Distribution of the Stress in the Dam Heel

Author: LiShengFu
Tutor: LiJunJie
School: Dalian University of Technology
Course: Hydraulic Structure Engineering
Keywords: Adaptive finite element h-type adaptive Dam heel stress Gravity Artificial joints reserved
CLC: TV642.3
Type: Master's thesis
Year: 2002
Downloads: 188
Quote: 8
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Abstract


Concrete dam heel stress and crack propagation is one of the engineering design control conditions , despite the stress distribution over the surface of dam foundation modulus , dam construction and other factors, but the general rule is the upstream dams may first appear near the tensile stress and the formation of the interface cracks. Therefore, the stress distribution near the dam heel analyzes seek to improve the dam heel stress distribution is very necessary. In this paper, adaptive finite element concrete gravity dam and the development process and the core content are reviewed and analyzed , and select the h-type adaptive mesh generation method , the application of adaptive finite element method of concrete gravity dam on a comparative analysis of the stress for different dam , foundation modulus of different situations and stress calculations were carried out for the results of analysis, and then on the gravity section design put forward some new ideas . The traditional finite element calculation there is a big dam heel tensile stress , this paper envisages dams near the dam site or bedrock were set manually preset stitch horizontal or vertical , thus improving the state of stress dam heel , heel to get away from the seam , dam heel seam length and the relationship between stress , while parts of the dam or the bedrock seam applicable conditions set aside a preliminary study for the structural design of gravity put forward new ideas.

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CLC: > Industrial Technology > Hydraulic Engineering > Water control,hydraulic structures > Dams > Concrete dam > Concrete gravity dam
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