人民长江
人民長江
인민장강
YANGTZE RIVER
2000年
9期
21-23
,共3页
非线性随机有限元%可靠度分析%闸室%三级船闸%水口水电站
非線性隨機有限元%可靠度分析%閘室%三級船閘%水口水電站
비선성수궤유한원%가고도분석%갑실%삼급선갑%수구수전참
non-linear stochastic FEM%reliability analysis%reinforced concrete structure%shiplock chamber
针对水口船闸闸室结构加固问题，将钢筋混凝土非线性随机有限元应用于工程实际，就钢筋混凝土结构裂缝宽度的计算提出了合理而又便捷的算法。经过对水口船闸二闸室设计结构承载力极限状态下点的可靠度分布分析，找出了薄弱部位，并在此基础上进行正常使用极限状态限制裂缝宽度条件下的体系可靠度计算，结果表明正常使用极限状态的可靠度对原结构的安全性起控制作用，为闸室结构加固提供了可靠的依据。
針對水口船閘閘室結構加固問題，將鋼觔混凝土非線性隨機有限元應用于工程實際，就鋼觔混凝土結構裂縫寬度的計算提齣瞭閤理而又便捷的算法。經過對水口船閘二閘室設計結構承載力極限狀態下點的可靠度分佈分析，找齣瞭薄弱部位，併在此基礎上進行正常使用極限狀態限製裂縫寬度條件下的體繫可靠度計算，結果錶明正常使用極限狀態的可靠度對原結構的安全性起控製作用，為閘室結構加固提供瞭可靠的依據。
침대수구선갑갑실결구가고문제，장강근혼응토비선성수궤유한원응용우공정실제，취강근혼응토결구렬봉관도적계산제출료합리이우편첩적산법。경과대수구선갑이갑실설계결구승재력겁한상태하점적가고도분포분석，조출료박약부위，병재차기출상진행정상사용겁한상태한제렬봉관도조건하적체계가고도계산，결과표명정상사용겁한상태적가고도대원결구적안전성기공제작용，위갑실결구가고제공료가고적의거。
In the light of structural reinforcement of Shuikou shiplock chamber, non-linear stochastic FEM of reinforced concrete is applied to its analysis, and a reasonable and convenient computational method for the crack opening of reinforced concrete structure is put forward. Through the analysis of point reliability level distribution on the second chamber of Shuikou shiplock under the limit load capacity , the weak regions are found out. On this basis, the reliability level computation and analysis on the chamber system under the limit state of normal operation condition with limited crack opening are carried out. The computational results demonstrate that the reliability level under the limit state of normal operation condition controls the safety of the original structure, and provides the reliable basis for the structural reinforcement of Shuikou shiplock chamber.
