【摘要】：近年來,隨著我國(guó)港口事業(yè)的發(fā)展,自然條件較好的海灣和海岸已被開發(fā),以后的港口工程建設(shè)將更多的處于各種復(fù)雜的條件下,或浪大流急,或海灘平緩,或地基土質(zhì)松軟。主樁板樁碼頭結(jié)構(gòu)是在傳統(tǒng)的普通板樁結(jié)構(gòu)下改良而成的結(jié)構(gòu)型式,能充分發(fā)揮主樁受力,具有抗彎能力強(qiáng)、適應(yīng)地基變化、耐久力強(qiáng)的特點(diǎn)。但是,國(guó)內(nèi)對(duì)主樁板樁碼頭結(jié)構(gòu)尚未開展過深入的研究,還沒有現(xiàn)行的設(shè)計(jì)規(guī)范與計(jì)算方法。由此,本文應(yīng)用國(guó)際通用的大型非線性有限元分析軟件ABAQUS,先是對(duì)剛性墻和柔性墻結(jié)構(gòu)進(jìn)行了數(shù)值建模,并且與相應(yīng)的理論進(jìn)行了驗(yàn)證。對(duì)不同樁間作用類型的板樁碼頭結(jié)構(gòu)進(jìn)行了模擬分析,并著重分析了鉸接模型和剛接模型的不同。分別對(duì)“工”字型主樁斷面和“T”型主樁斷面的主樁板樁結(jié)構(gòu)進(jìn)行建模分析,比較兩者的異同,分析主樁板樁結(jié)構(gòu)的受力特征。對(duì)影響主樁板樁結(jié)構(gòu)受力的因素進(jìn)行分析。研究發(fā)現(xiàn),樁間作用鉸接設(shè)置時(shí),板樁墻后應(yīng)力和位移變化的比較平緩;而剛接設(shè)置時(shí),板樁墻后應(yīng)力和位移變化則比較復(fù)雜,先是緩慢增長(zhǎng),然后會(huì)有一個(gè)急劇上升的過程。當(dāng)分析主樁板樁結(jié)構(gòu)的受力特征時(shí),“工”字型斷面和“T”型斷面受力特征是不一樣的,整體來看都是腹板處高于翼緣處。研究表明,主樁的排布間距和埋深對(duì)結(jié)構(gòu)的影響有一定的上限值和下限值,在這個(gè)范圍類,主樁間距和埋深對(duì)結(jié)構(gòu)的受力有一定的規(guī)律。錨定位置高度對(duì)結(jié)構(gòu)位移影響較大,對(duì)于結(jié)構(gòu)的受力主要集中在錨定位置附近。經(jīng)分析,本文得到的相關(guān)結(jié)論可作為主樁板樁碼頭結(jié)構(gòu)實(shí)際工程設(shè)計(jì)的參考。
[Abstract]:In recent years, with the development of port industry in our country, the bay and coast with better natural conditions have been developed, and the future port engineering construction will be more in various complicated conditions, such as rapid waves, gentle beaches, or soft foundation. The structure of the main pile wharf is improved under the traditional ordinary plate pile structure. It can give full play to the force of the main pile and has the characteristics of strong flexural ability, adapting to the change of the foundation and strong durability. However, the structure of the main pile-plate pile wharf has not been deeply studied in China, and there is no current design code and calculation method. Therefore, in this paper, the large nonlinear finite element analysis software Abaqus is used to model the rigid and flexible wall structures, and the corresponding theory is verified. The structure of plate pile wharf with different types of interaction between piles is simulated and analyzed, and the differences between hinged and rigid joint models are emphatically analyzed. The main pile structure of "I" type main pile section and "T" type main pile section are modeled and analyzed, the similarities and differences between them are compared, and the mechanical characteristics of main pile plate pile structure are analyzed. The factors influencing the stress of the main pile-plate pile structure are analyzed. It is found that the stress and displacement change behind the plate pile wall is relatively gentle when the interaction between piles is hinged, while the change of the stress and displacement behind the plate pile wall is more complicated when the pile is rigidly connected, which increases slowly and then rises sharply. When the stress characteristics of the main pile-plate pile structure are analyzed, the stress characteristics of the "I" section and the "T" section are different, and the web is higher than the flange as a whole. The results show that the spacing and depth of the main pile have a certain upper limit value and lower limit value on the structure. In this category, the spacing of the main pile and the depth of the buried pile have a certain law on the force of the structure. The height of anchoring position has a great influence on the displacement of the structure, and the stress on the structure is mainly near the anchor position. Through analysis, the relevant conclusions obtained in this paper can be used as a reference for the practical engineering design of the main pile-plate pile wharf structure.
【學(xué)位授予單位】：大連海洋大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U656.112

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本文編號(hào)：2197175