港工技术
港工技術
항공기술
PORT ENGINEERING TECHNOLOGY
2015年
2期
26-29
,共4页
随机过程%三峡库区%大水位差%高桩码头%可靠度
隨機過程%三峽庫區%大水位差%高樁碼頭%可靠度
수궤과정%삼협고구%대수위차%고장마두%가고도
stochastic process%the three gorges reservoir area%large water-head%high pile wharf%reliability
近年来，随着三峡库区建成运行，为适应大水位差的作业环境，高桩码头在三峡库区大量出现。在设计基准期内，高桩码头的桩身结构要承受船舶桩基、水流、堆载等各种外力作用，作用力与桩身结构抗力均随时间推移不断变化，是依赖于时间参数的随即过程。本研究基于随即过程理论，考虑水位变化，船舶桩基及桩身结构抗力的随机性，应用时变可靠度理论对桩身承载力进行分析研究，可为类似问题的研究提供参考。
近年來，隨著三峽庫區建成運行，為適應大水位差的作業環境，高樁碼頭在三峽庫區大量齣現。在設計基準期內，高樁碼頭的樁身結構要承受船舶樁基、水流、堆載等各種外力作用，作用力與樁身結構抗力均隨時間推移不斷變化，是依賴于時間參數的隨即過程。本研究基于隨即過程理論，攷慮水位變化，船舶樁基及樁身結構抗力的隨機性，應用時變可靠度理論對樁身承載力進行分析研究，可為類似問題的研究提供參攷。
근년래，수착삼협고구건성운행，위괄응대수위차적작업배경，고장마두재삼협고구대량출현。재설계기준기내，고장마두적장신결구요승수선박장기、수류、퇴재등각충외력작용，작용력여장신결구항력균수시간추이불단변화，시의뢰우시간삼수적수즉과정。본연구기우수즉과정이론，고필수위변화，선박장기급장신결구항력적수궤성，응용시변가고도이론대장신승재력진행분석연구，가위유사문제적연구제공삼고。
The Three Gorges reservoir had been brought into service in recent years, and a large number of high pile wharfs appeared there which adapted to large water-head environment. During the design base period, the pile of high pile wharf had to withstand the external forces by pile foundation, current and heavy load etc. The applied forces and the pile’s structural resistances varied with time, which was regarded as a stochastic process based on time parameter. According to the stochastic process theory, by considering the change of water level, the randomness of structural resistances for the pile foundation and pile body, time-varying reliability method was adopted to analyze and study the pile bearing capacity, which would provide references for similar issues.
