本文選題：高樁碼頭　切入點(diǎn)：分配系數(shù)　出處：《大連理工大學(xué)》2014年碩士論文

【摘要】：高樁碼頭是一種應(yīng)用廣泛的碼頭結(jié)構(gòu)型式。在高樁碼頭橫向排架的受力計(jì)算中,船舶荷載等水平集中力可能會是結(jié)構(gòu)設(shè)計(jì)的控制荷載,其在排架中的分配情況對高樁碼頭在使用階段的穩(wěn)定性和安全性具有至關(guān)重要的影響。研究水平力在高樁碼頭排架中的分配,可以為結(jié)構(gòu)設(shè)計(jì)和規(guī)范修訂提供參考。 本文首先研究了碼頭分段跨數(shù)和排架間距、碼頭寬度、樁的布置等對水平集中力的橫向分力在排架中的分配的影響。隨著碼頭分段跨數(shù)的增多和排架間距的增大,用規(guī)范計(jì)算得到的分配系數(shù)的誤差也越來越大；當(dāng)碼頭寬度較小時(shí),規(guī)范計(jì)算得到的最不利分配系數(shù)偏小,可能引起安全隱患；改變樁的布置,由有斜樁變?yōu)槿睒稌r(shí),規(guī)范計(jì)算得到的最不利分配系數(shù)偏大,可能會浪費(fèi)材料、提高工程成本。 按照現(xiàn)行高樁碼頭規(guī)范,確定水平集中力的橫向分力在碼頭各排架中的分配時(shí),有兩個(gè)基本假定：①碼頭上部結(jié)構(gòu)在水平方向可簡化為剛性連續(xù)梁(EI=∞)；②排架可簡化為支承彈簧,對上部結(jié)構(gòu)有水平約束作用。本文針對這兩個(gè)基本假定,提出質(zhì)疑。當(dāng)碼頭上部結(jié)構(gòu)與排架水平剛度之比小于一定數(shù)值,即碼頭為窄樁臺時(shí),上部結(jié)構(gòu)不可再看作剛性連續(xù)梁,而應(yīng)看作柔性連續(xù)梁(EI≠∞)；排架對上部結(jié)構(gòu)不僅有水平約束作用,還有轉(zhuǎn)動(dòng)約束作用,尤其對于全直樁碼頭,這種轉(zhuǎn)動(dòng)約束作用更為明顯,其對分配系數(shù)的影響不可忽略。由此,本文提出新的簡化模型,推導(dǎo)簡化計(jì)算公式,并且將求解公式編制成電子表格,設(shè)計(jì)人員只需要輸入碼頭尺寸和材料參數(shù),即可直接得到排架中的分配系數(shù)。此種方法簡單明了,安全可靠,適于推廣。
[Abstract]:High pile wharf is a kind of widely used wharf structure. In the calculation of lateral bent structure of high pile wharf, the horizontal concentrated force such as ship load may be the control load of structural design. The distribution of the horizontal force in the bent frame has a vital influence on the stability and safety of the high pile wharf in the service stage. The study on the distribution of horizontal force in the bent frame of the high pile wharf can provide a reference for the structural design and the revision of the specifications. In this paper, the influence of the number of section span and the spacing of piers, the width of wharf and the arrangement of piles on the distribution of transverse force of horizontal concentrated force in the bent frame are studied in this paper. With the increase of the number of section spans and the increase of the spacing of piers, When the width of the wharf is small, the most unfavorable distribution coefficient calculated by the code is small, which may lead to the hidden danger of safety. When the pile arrangement is changed from inclined pile to full straight pile, The most unfavorable distribution coefficient obtained by standard calculation is on the high side, which may waste materials and increase engineering cost. According to the current code for high pile wharf, when determining the distribution of horizontal concentrated force in each frame of wharf, There are two basic assumptions that the superstructure of Wharf: 1 can be simplified into a rigid continuous beam in the horizontal direction as a rigid continuous beam (EI = 鈭，

本文編號：1663414