Designing Induced Joints in RCC Arch Dams for Enhanced Crack Prevention: A Contact Unit Simulation and Equivalent Strength Theory Approach
Journal Title: Journal of Civil and Hydraulic Engineering - Year 2024, Vol 2, Issue 1
Abstract
Decades of engineering practice have substantiated that the implementation of construction joints is a pivotal method for mitigating dam cracking. The integration of various joint types, notably transverse and induced joints, within roller-compacted concrete (RCC) arch dams has emerged as a promising strategy to curtail cracking and structural failure. This approach leverages the unique structural characteristics inherent to each joint type. Given the intricate, variable, and dynamic nature of thermal stress in RCC arch dams, the design process for crack prevention, particularly the configuration of induced joints, demands an accurate representation of the dam's operational conditions from construction through to service. Investigations in practical engineering contexts have revealed that the utilization of a contact unit simulation methodology, featuring an open/close iterative function for modeling the behavior of induced and transverse joints in RCC arch dams, proves effective. This method is complemented by the adoption of equivalent strength theory as the criterion for structural integrity assessment. A comprehensive process simulation encompassing the entire dam structure further enhances the efficacy of this approach. Such simulations facilitate a more granular examination of joint placement within the dam and the structural design of the joints themselves. As a result, induced joints can be optimally opened in alignment with design expectations, thereby alleviating tensile stress triggered by temperature reductions. This strategy assures superior construction quality of the dam's concrete body, contributing significantly to the longevity and safety of RCC arch dams.
Authors and Affiliations
Haifeng Li
Keywords
Related Articles
- EP ID EP731830
- DOI https://doi.org/10.56578/jche020101
- Views 72
- Downloads 1
Real-Time Monitoring and Platform Design for Concrete Compactness Using Long Short-Term Memory Networks
To address the complexities and inaccuracies associated with traditional methods of concrete compactness monitoring, in this paper, a real-time monitoring approach based on long short-term memory (LSTM) networks has been...
Numerical Simulation of Resistivity Response Characteristics in Seepage Detection of Cutoff Walls Using Cross-Hole Resistivity Tomography
Cutoff walls are an essential method for seepage prevention in dams. During the construction and operation of reservoirs, factors such as construction techniques, variations in groundwater conditions within the dam body,...
Safety Monitoring Technologies for the Water Resources Allocation Project in the Pearl River Delta: Challenges and Innovations
The Pearl River Delta Water Resources Allocation Project is characterized by an extensive distribution of buildings along a lengthy alignment and the application of diverse construction methodologies. Given these complex...
Comparative Analysis of Analytical and Empirical Methods for Estimating the Longitudinal Dispersion Coefficient in Open-Channel Flows
The accurate estimation of the longitudinal dispersion coefficient is crucial for predicting solute transport in natural water bodies. In this study, an analytical (integral) method based on first principles is compared...
Regression Model for the Mechanical Properties of PVC-P Geomembranes with Scratch Damage
In response to the mechanical performance alterations of PVC-P geomembranes due to improper handling or subgrade particle action during construction and operation, a series of axial tensile tests on PVC-P geomembranes wi...