【摘要】：當(dāng)今,科技水平不斷提高,信息技術(shù)作為二十一世紀(jì)的新技術(shù)給建筑業(yè)、機(jī)械制造業(yè)等行業(yè)帶來(lái)了革命性的變化,然而建筑信息模型應(yīng)用于橋梁工程仍舊處于一個(gè)比較低級(jí)的水平。十二五以來(lái),橋梁業(yè)需要向著低能耗、高效率方向發(fā)展,隨著國(guó)內(nèi)外橋梁行業(yè)競(jìng)爭(zhēng)愈發(fā)的激烈,建筑信息模型作為新時(shí)代的產(chǎn)物,是必需大力推廣、發(fā)展和研究的。本文以楊泗港長(zhǎng)江大橋漢陽(yáng)側(cè)錨碇工程中澆注的填芯混凝土為工程背景,由混凝土中水泥的水化作用引起的填芯混凝土溫度裂縫為研究對(duì)象,運(yùn)用大型通用有限元分析軟件Midas FEA中“水化熱分析”模塊進(jìn)行填芯混凝土的溫度應(yīng)力場(chǎng)計(jì)算及分析。本文主要通過(guò)BIM技術(shù)對(duì)大體積填芯混凝土的冷卻水管的布置方案進(jìn)行優(yōu)化,以降低混凝土中水泥水化作用釋放的熱對(duì)結(jié)構(gòu)產(chǎn)生的不利影響。本文的主要研究及內(nèi)容如下:(1)結(jié)合BIM模型,介紹了BIM技術(shù)在錨碇工程中應(yīng)用。通過(guò)BIM在錨碇施工過(guò)程中的:模型的建立、數(shù)據(jù)庫(kù)的創(chuàng)建、施工進(jìn)度成本控制等階段的應(yīng)用,為后面的溫度應(yīng)力場(chǎng)分析做了鋪墊。(2)通過(guò)Rhino的參數(shù)化插件Grasshopper調(diào)整冷卻水管的直徑、長(zhǎng)度和間距以確定冷卻水管的最優(yōu)布置方案,降低混凝土水化熱對(duì)大體積混凝土的影響。(3)基于混凝土熱傳導(dǎo)計(jì)算理論,建立Midas FEA有限元實(shí)體模型進(jìn)行大體積填芯混凝土溫度應(yīng)力場(chǎng)的研究分析。(4)進(jìn)行了未添加冷卻水管與添加冷卻水管的有限元模型分析比對(duì),同時(shí)對(duì)實(shí)測(cè)數(shù)據(jù)與仿真數(shù)據(jù)結(jié)果進(jìn)行比對(duì),驗(yàn)證BIM在溫度應(yīng)力場(chǎng)分析時(shí)的可行性。(5)通過(guò)Midas FEA的溫度應(yīng)力場(chǎng)的分析,得出大體積混凝土溫度應(yīng)力場(chǎng)的最不利位置,在項(xiàng)目開(kāi)始前反饋給項(xiàng)目部,以最大程度控制大體積混凝土溫度裂縫的產(chǎn)生。
[Abstract]:Nowadays, the level of science and technology is constantly improving. As a new technology in the 21 century, information technology has brought revolutionary changes to the construction industry, machinery manufacturing industry and other industries. However, the application of building information model in bridge engineering is still at a relatively low level. Since the 12th Five-Year Plan, the bridge industry needs to develop in the direction of low energy consumption and high efficiency. With the increasingly fierce competition in the bridge industry at home and abroad, building information model, as a product of the new era, must be vigorously promoted, developed and studied. In this paper, the core filling concrete of Yangsigang Yangtze River Bridge is taken as the engineering background, and the temperature crack of the core concrete caused by the hydration of cement in the concrete is taken as the research object. The thermal analysis module of hydration in Midas FEA is used to calculate and analyze the thermal stress field of core-filled concrete. In this paper, BIM technology is used to optimize the arrangement of cooling water pipes for mass core-filled concrete in order to reduce the adverse effect of heat released by cement hydration on the structure. The main research and contents of this paper are as follows: (1) combined with BIM model, the application of BIM technology in Anchorage engineering is introduced. Through the application of BIM in the process of Anchorage construction, such as the establishment of model, the establishment of database, the control of construction schedule and cost, the paper paves the way for the analysis of thermal stress field in the following stage. (2) the diameter of cooling water pipe is adjusted by Grasshopper, a parametric plug-in of Rhino. The length and spacing are used to determine the optimal arrangement of cooling water pipes and to reduce the influence of hydration heat on mass concrete. (3) based on the theory of heat conduction calculation of concrete, The Midas FEA finite element solid model is established to study the temperature stress field of the mass filled concrete. (4) the finite element model of the unadded cooling water pipe is compared with that of the added cooling water pipe. At the same time, the comparison between the measured data and the simulation data verifies the feasibility of BIM in the analysis of the temperature stress field. (5) through the analysis of the temperature stress field of Midas FEA, the most disadvantageous position of the thermal stress field of mass concrete is obtained. Feedback to the project department before the start of the project to control the temperature cracks of mass concrete to the maximum extent.
【學(xué)位授予單位】：湖北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U445.57

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本文編號(hào)：2245492