本文選題：定位墩　切入點(diǎn)：船舶有效撞擊能量　出處：《重慶交通大學(xué)》2014年碩士論文

【摘要】：隨著船舶大型化的發(fā)展，，浮碼頭的躉船尺寸也在不斷增大，傳統(tǒng)的系留躉船的方式如錨鏈和撐桿系統(tǒng)難以滿足大型躉船的定位要求。為提高浮碼頭泊位的靠泊能力，工程上采用定位墩結(jié)構(gòu)形式來(lái)系留大型躉船。文章正是在這種背景下對(duì)定位墩進(jìn)行了結(jié)構(gòu)受力特性研究以及結(jié)構(gòu)優(yōu)化，主要內(nèi)容如下： 首先，結(jié)合長(zhǎng)江中下游浮碼頭系留躉船的定位墩結(jié)構(gòu)，在總結(jié)國(guó)內(nèi)外對(duì)船舶-結(jié)構(gòu)碰撞機(jī)理研究的基礎(chǔ)上，采用外部碰撞機(jī)理中的Minosky理論解析法作為船舶-躉船-定位墩系統(tǒng)碰撞的分析方法，推導(dǎo)船舶有效撞擊能量的簡(jiǎn)化計(jì)算公式。并研究船舶撞擊不同高程時(shí)船舶撞擊力與船舶有效撞擊能量的關(guān)系。 其次，依托蕪湖市富航物流有限公司碼頭建設(shè)工程，運(yùn)用ANSYS有限元分析軟件建立了定位墩結(jié)構(gòu)的簡(jiǎn)化數(shù)值模型，考慮結(jié)構(gòu)自重、風(fēng)荷載、水流力、船舶撞擊力、船舶系纜力和船舶擠靠力的作用，并對(duì)以上幾種荷載進(jìn)行最不利作用效應(yīng)組合，計(jì)算不同工況下定位墩結(jié)構(gòu)的最大位移和各構(gòu)件的內(nèi)力值。根據(jù)各種工況下軸力、剪力和彎矩極值出現(xiàn)的位置，分析定位墩結(jié)構(gòu)受力最薄弱的位置，并判斷定位墩結(jié)構(gòu)前后排鋼管樁受力不均勻性。 然后，結(jié)合定位墩結(jié)構(gòu)受力最薄弱的位置和前后排樁受力不均勻的情況，對(duì)定位墩結(jié)構(gòu)的鋼斜撐提出兩種優(yōu)化方案，分別是針對(duì)鋼斜撐的連接位置的優(yōu)化和鋼斜撐所采用材料的優(yōu)化。通過(guò)對(duì)同一截面處前后排樁軸力、剪力和彎矩差值的分析，判斷定位墩結(jié)構(gòu)前后排樁受力不均勻性是否降低。 最后，在對(duì)定位墩結(jié)構(gòu)鋼斜撐材料優(yōu)化的基礎(chǔ)上，對(duì)定位墩結(jié)構(gòu)鋼管樁提出樁徑、樁距和樁數(shù)三種優(yōu)化方案。計(jì)算不同樁徑、不同樁距下的定位墩結(jié)構(gòu)樁頂位移，繪出樁頂位移與樁徑樁距的關(guān)系曲線，并在樁徑和樁距優(yōu)化的基礎(chǔ)上，提出一種最佳的三根樁定位墩結(jié)構(gòu)的優(yōu)化方案，比較三根樁與四根樁的定位墩結(jié)構(gòu)受力均勻性。
[Abstract]:With the development of large-scale ship, floating pier barge size is also increasing, the traditional way of mooring pontoon as anchor and pole positioning system can not meet the requirements of large barges. In order to enhance the Berthing Capacity of floating berths, used in engineering structure to large mooring pier positioning barges. This article is in this context the location of the pier structure stress characteristic study and structure optimization, the main contents are as follows:
First of all, combined with the positioning structure of floating dock pier downstream of Yangtze River mooring barges, at home and abroad on the basis of ship structure collision mechanism research, analysis methods as the ship collision - positioning system using Minosky - pontoon pier theoretical analysis of external collision mechanism in the simplified calculation formula is derived the effective impact energy. And the effect of ship impact force of different elevation and ship impact energy.
Secondly, relying on the rich city of Wuhu Aviation Logistics Limited company wharf construction project, a simplified numerical model of positioning pier structure using finite element analysis software ANSYS, considering the structural weight, wind load, water stress, impact force of ship, ship mooring force and ship breasting force, and the adverse effect of combination the above several load, internal force calculation of the maximum displacement position of pier structure under different conditions and various components of value. According to the various conditions of axial force, shear force and bending moment of extreme position appears, the force analysis of the weakest position pier location, and determine the location of steel pipe pile pier structure before and after the row of force is not uniform.
Then, combined with the positioning of pier structure of the weakest force and position of the front row piles is not uniform, the location of pier structure of steel bracing is proposed two optimization schemes are aimed at the steel bracing connection position and the optimization of steel bracing materials used by the optimization. The axial force on the pile before and after the same section, the analysis of shear and moment difference, judgment and positioning of pile pier structure stress uniformity can decrease.
Finally, in the positioning of the pier structure of steel bracing material optimization based on positioning of the pier structure of steel pipe pile of pile diameter, pile spacing and pile number optimization schemes. The calculation of different pile diameter, pile pier structure from positioning the top of the pile displacement, draw the displacement of pile top and pile diameter pile distance curve and in the foundation, pile diameter and pile spacing optimization, put forward an optimization plan of the best three pile pier structure comparison of location positioning, pier three piles and four piles of uniform stress.

【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U656.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 王自力,顧永寧;船舶碰撞動(dòng)力學(xué)過(guò)程的數(shù)值仿真研究[J];爆炸與沖擊;2001年01期

2 劉建成,顧永寧;船-橋碰撞力學(xué)問(wèn)題研究現(xiàn)狀及非線性有限元仿真[J];船舶工程;2002年05期

3 王向堅(jiān);;用樣條子域法分析船舶撞擊碼頭非線性動(dòng)力響應(yīng)[J];工程力學(xué);1988年04期

4 胡志強(qiáng),顧永寧,高震,李雅寧;基于非線性數(shù)值模擬的船橋碰撞力快速估算[J];工程力學(xué);2005年03期

5 劉世海;;混凝土定位墩在浮碼頭上的應(yīng)用[J];工程與建設(shè);2008年03期

6 梁文娟;;船舶碰撞的三維分析[J];交通部上海船舶運(yùn)輸科學(xué)研究所學(xué)報(bào);1986年01期

7 胡志強(qiáng);朱e

本文編號(hào)：1691083