【摘要】：近年來關(guān)于海洋生態(tài)環(huán)境的研究持續(xù)升溫,由于海洋研究的特殊性,簡單的實驗室模擬實驗或船舶科考,都不能對海洋長期變化過程進行全面研究。因此,建造變量可控的海洋生態(tài)環(huán)境模擬體系,成為解決海洋科學問題的新途徑。目前,若干高校和科研機構(gòu)已經(jīng)建造的可控的大型實驗水體都是以研究水平過程為目標而設(shè)計的,不能夠滿足當前對海洋垂直過程研究的迫切需要。針對這一現(xiàn)狀,山東大學(青島校區(qū))提出在陸地上建造以研究大陸架海洋垂直過程為目的的海洋微生態(tài)模擬艙方案。該方案中的海洋微生態(tài)模擬艙是立式薄壁圓柱殼結(jié)構(gòu),其主要特點是：1)高徑比大；2)長簡體結(jié)構(gòu)；3)直徑厚度比大；4)內(nèi)部充滿海水。這種結(jié)構(gòu)在地震動力作用下很容易發(fā)生失穩(wěn)破壞,從而使艙體失去承載能力,艙壁變形甚至坍塌。本文主要進行海洋微生態(tài)模擬艙的抗震可靠性研究及震害預測。具體工作如下：1.根據(jù)大陸架海洋垂直深度的特點和海洋科學實驗要求對海洋微生態(tài)模擬艙進行設(shè)計,主要有模擬艙本體、溫控系統(tǒng)、光照系統(tǒng)、層流系統(tǒng)、海水成分控制系統(tǒng)及監(jiān)測系統(tǒng)。2.根據(jù)有關(guān)規(guī)定,并參考其他類似結(jié)構(gòu)基礎(chǔ)的設(shè)計,對海洋微生態(tài)模擬艙基礎(chǔ)進行設(shè)計,并對基礎(chǔ)的抗震能力進行驗算。3.用通用有限元仿真軟件Adina8.5仿真模擬艙壁厚度對模擬艙地震動力響應(yīng)的影響,并提取模擬艙艙壁應(yīng)力值,并根據(jù)仿真模擬結(jié)果對模擬艙艙壁進行變厚度設(shè)計。4.用通用有限元仿真軟件Adina8.5仿真模擬地震烈度對模擬艙地震動力響應(yīng)的影響,提取地震動力響應(yīng)過程中模擬艙艙壁的最大應(yīng)力、應(yīng)力云圖和液面晃動波高、晃動云圖。5.用通用有限元仿真軟件Adina8.5仿真模擬儲液深度對模擬艙地震動力響應(yīng)的影響,提取地震動力響應(yīng)過程中模擬艙艙壁的最大應(yīng)力值、應(yīng)力云圖及液面晃動波高、晃動云圖。6.參考地震災(zāi)害等級劃分的相關(guān)規(guī)定,劃分海洋微生態(tài)模擬艙地震破壞等級,并對影響海洋微生態(tài)模擬艙抗震可靠性的主要因素進行分析,總結(jié)各地震烈度下模擬艙的地震災(zāi)害等級及宏觀表現(xiàn)。
[Abstract]:In recent years, the research on marine ecological environment has been heated up continuously. Because of the particularity of marine research, simple laboratory simulation experiments or ship science can not comprehensively study the long-term variation process of the ocean. Therefore, it is a new way to solve the problem of marine science to build marine ecological environment simulation system with controllable variables. At present, a number of universities and scientific research institutions have built large controlled experimental water bodies designed to study horizontal processes, which can not meet the urgent needs of the current research on vertical ocean processes. In view of this situation, Shandong University (Qingdao Campus) proposed to construct a marine microecological simulation module on land for the purpose of studying the vertical process of the continental shelf ocean. The marine microecological simulation module in this scheme is a vertical thin-walled cylindrical shell structure, the main feature of which is: 1) high aspect ratio 2) long simplified structure 3) diameter to thickness ratio of large diameter to thickness ratio of 4) the interior is filled with sea water. This kind of structure is vulnerable to instability and failure under seismic dynamic action, which makes the bulkhead lose its bearing capacity, and the bulkhead deforms and even collapses. In this paper, the seismic reliability and earthquake damage prediction of marine microecological simulation module are studied. The work is as follows: 1. According to the characteristics of the vertical depth of the continental shelf and the requirements of marine scientific experiments, the marine microecological simulation module is designed, including the simulation module body, the temperature control system, the illumination system, the laminar flow system, the seawater composition control system and the monitoring system. According to the relevant regulations and referring to the design of other similar structural foundations, the foundation of marine microecological simulation module is designed, and the aseismic capacity of the foundation is checked. 3. The influence of bulkhead thickness on the seismic dynamic response of simulated cabin is simulated by Adina8.5, and the stress value of simulated bulkhead is extracted, and the variable thickness design of simulated bulkhead is carried out according to the simulation results. The general finite element simulation software Adina8.5 is used to simulate the influence of seismic intensity on the seismic dynamic response of the simulated cabin. The maximum stress of the simulated cabin bulkhead, the height of the stress cloud and the sloshing wave on the liquid surface, and the sloshing cloud figure .5 are extracted in the process of seismic dynamic response. The influence of liquid storage depth on the seismic dynamic response of the simulated cabin is simulated by using the general finite element simulation software Adina8.5. The maximum stress values of the simulated cabin bulkhead, the height of the stress cloud diagram and the sloshing wave on the liquid surface, and the sloshing cloud diagram .6 are extracted during the seismic dynamic response process. Referring to the relevant rules of seismic disaster classification, the earthquake damage grade of marine microecological simulation cabin is divided, and the main factors influencing the seismic reliability of marine microecological simulation module are analyzed. The earthquake disaster grade and macroscopic performance of the simulation module under various earthquake intensity are summarized.
【學位授予單位】：山東大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：P715;P315.9

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