混凝土大坝结构修复加固新技术——分析与应用

我国的水库数量居世界首位,目前相当多的水库大坝需要除险加固。本文通过对目前我国大坝病害现状和常用加固技术的比较分析,指出SRAP工艺在大坝加固中应用的合理性、实用性以及技术的优越性(修复裂缝、材料无毒性等优点),给出了SRAP工艺在大坝加固中的施工措施及其对维修加固的预期效果。研究结果表明,SRAP工艺结合工程加固数值模拟能指导大坝维修加固,提供的工程措施能够有效防止裂缝和满足维修加固的目标需要。

Analysis and application of new reinforcing techniques for concrete dams

A large number of reservoirs need be rehabilitated and reinforced in china which is in possession of the most reservoir amounts in the world.So the Korea SRAP approaches were introduced into China by Nanjing hydraulic research institute supported by "948" project of the Ministry of Water Resources of China. As new rehabilitation and reinforcing techniques,the SR strengthen materials and AP modified resin mortars were combined with prestressed method in SRAP approaches.First,nowadays dam distress characteristics were presented and lots of reinforcing techniques were compared and analyzed in this paper.Based on the SRAP advantages such as the concrete crack rehabilitation and its used material innocuity and so on,the analysis results show that the SRAP are feasible and reasonable to guide the design and operation of dam rehabilitation and reinforcement.The SRAP construction measures and expected reinforcing effects were given out in this paper.The results shows that SRAP approaches with numerical simulation is feasible to guide dam rehabilitation and reinforcement,and the proposed SRAP engineering measures are effective for preventing dam local fracturing and satisfaction of rehabilitation and reinforcement targets.