本文選題：纜索吊裝系統(tǒng) + 纜索核算��； 參考：《重慶交通大學(xué)》2014年碩士論文

【摘要】：目前常見纜索吊裝施工法是拱橋的施工的一種常見的方法。纜索吊裝方法能夠在地形復(fù)雜的山谷中,大型機械設(shè)備無法進(jìn)場施工的地方進(jìn)行對預(yù)制拱圈的吊裝施工,然后將各預(yù)制段連接起來形成整體,最終形成主拱圈。該方法具有易操作、易掌握、施工方便、工藝簡單、成本低、安全等特點。纜索吊裝系統(tǒng)的運行安全性直接影響著施工安全和施工工期,本文為確保纜索吊裝系統(tǒng)能夠安全順利的在施工中運行,主要研究工作如下： 1、對纜索吊裝系統(tǒng)中的纜索進(jìn)行計算。主索的計算,先假定空索和重索的跨中最大垂度,按照相應(yīng)的簡支梁進(jìn)行計算,并進(jìn)行安全系數(shù)核定。工作索的核算方法與主索的算方法一致。起重索的核算是對跑頭拉力F計算及安全系數(shù)校核,再對每臺起吊卷揚機容繩量及單根起吊繩長度計算,最后對起吊索引起的塔架不平衡荷載計算。牽引索復(fù)核驗算,首先對最大牽引力驗算,然后對牽引索安全系數(shù)驗算,再對每側(cè)牽引索長度驗算,最后對牽引索作用在索塔上的外力計算。通過驗算,證明纜索吊裝系統(tǒng)中的各類索能夠在施工中安全使用。對安裝階段拱箱受力和扣索受力驗算。 2、對纜索吊裝系統(tǒng)中的地錨及塔架基礎(chǔ)復(fù)核。對地錨進(jìn)行拔力穩(wěn)定性復(fù)核。對塔架基礎(chǔ)復(fù)核是通過采用SAP2000建立有限元模型進(jìn)行計算,通過對拱箱吊裝各個工況計算結(jié)果進(jìn)行對比,對最不利工況下基礎(chǔ)受力進(jìn)行驗算。通過驗算得出,地錨能夠在整個纜索吊裝施工中正常的運行。 3、對纜索吊裝系統(tǒng)在實際施工中,在不同荷載工況下對其進(jìn)行監(jiān)測,不同荷載工況分別是70%、100%和120%掛重試吊監(jiān)測。觀測的主要內(nèi)容有,在不同荷載工況下對塔頂位移觀測,塔架基礎(chǔ)沉降監(jiān)測,關(guān)鍵桿件應(yīng)力監(jiān)測,主索垂度觀測以及主索索力監(jiān)測。通過試吊監(jiān)測證明纜索吊裝系統(tǒng)能夠安全的運行。
[Abstract]:At present, the common cable hoisting construction method is a common method of arch bridge construction. The cable hoisting method can be used to hoist the precast arch ring in the valley with complicated terrain where the large mechanical equipment can not enter the field, and then connect each prefabricated section to form a whole, and finally form the main arch ring. The method is easy to operate, easy to master, easy to construct, simple in technology, low in cost and safe. The safety of cable hoisting system has a direct impact on the construction safety and construction period. In order to ensure the cable hoisting system can run safely and smoothly in construction, the main research work is as follows: 1. Calculate the cable in the cable hoisting system. The calculation of the main cable is based on the assumption of the maximum sag in the span of the empty cable and the cable, the calculation is carried out according to the corresponding simply supported beam, and the safety factor is approved. The calculation method of the working cable is consistent with the calculation method of the main cable. The calculation of lifting rope is to calculate the running head tension F and safety factor, then calculate the capacity of each hoist and the length of single lifting rope, and finally calculate the unbalance load of tower caused by lifting rope. First, the maximum traction force is checked, then the safety factor of the traction cable, the length of each side of the traction cable, and the external force acting on the cable tower is calculated. Through checking calculation, it is proved that all kinds of cables in cable hoisting system can be safely used in construction. Check the force of arch box and buckle cable in installation stage. 2. Check the ground anchor and tower foundation in cable hoisting system. Check the stability of pulling force on the anchor. SAP2000 is used to establish finite element model to calculate the tower foundation. By comparing the calculation results of each working condition of hoisting the arch box, the stress of the foundation under the most unfavorable working condition is checked and calculated. Through checking calculation, the ground anchor can run normally in the whole cable hoisting construction. 3. The cable hoisting system is monitored under different load conditions in actual construction. The different load conditions are 70% 100% and 120% respectively. The main contents of the observation include the observation of tower top displacement under different load conditions, the monitoring of tower foundation settlement, the monitoring of stress of key members, the observation of main cable sag and the monitoring of main cable force. It is proved that the cable hoisting system can operate safely by means of test crane monitoring.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U445.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 周水興,江禮忠,曾忠,周建庭;拱橋節(jié)段施工斜拉扣掛索力仿真計算研究[J];重慶交通學(xué)院學(xué)報;2000年03期

2 鄧江明;;纜索吊裝扣塔偏位對拱肋高程影響的幾何分析[J];重慶交通大學(xué)學(xué)報(自然科學(xué)版);2009年03期

3 陳得良;繆莉;田仲初;駱中林;;大跨度橋梁拱肋懸拼時扣索索力和預(yù)抬量計算[J];工程力學(xué);2007年05期

4 劉萬忠,王解軍;懸臂拼裝鋼筋混凝土拱橋的施工控制[J];公路交通科技;2003年06期

5 洪流,陳彬;拱橋拱箱纜索吊裝的施工控制[J];公路交通技術(shù);2004年05期

6 張敬棟;大跨徑拱橋纜索吊裝施工有關(guān)問題的探討[J];華東公路;1995年02期

7 何雄君,沈成武,陳巧生,張航;鋼管混凝土拱橋主拱鋼管纜索吊裝扣索索力調(diào)整(英文)[J];武漢交通科技大學(xué)學(xué)報;1999年05期

8 鄧志華;大跨度鋼筋混凝土拱橋空間穩(wěn)定性分析[J];四川建筑;2005年01期

9 田仲初,陳得良,顏東煌,何斌,蔣田勇;大跨度拱橋拱圈拼裝過程中扣索索力和標(biāo)高預(yù)抬量的確定[J];鐵道學(xué)報;2004年03期

10 李富生;大跨度拱橋纜索吊裝施工控制[J];西部探礦工程;2002年S1期

，

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