鋼板倉結(jié)構(gòu)設(shè)計(jì)及有限元分析
本文選題:鋼板倉 切入點(diǎn):結(jié)構(gòu)設(shè)計(jì) 出處:《煙臺(tái)大學(xué)》2017年碩士論文
【摘要】:鋼板倉的設(shè)計(jì)理念在于解決大量粉粒料等的貯存問題,該設(shè)計(jì)解決了大直徑落地庫邊部存料多、出庫率低、均化效果差及庫內(nèi)設(shè)備無法維修更換的技術(shù)難題。同時(shí)鋼板倉具有儲(chǔ)量大、投資省、建設(shè)速度快、出庫率高、均化性能好、庫內(nèi)設(shè)備更換維修方便、能源消耗小、運(yùn)轉(zhuǎn)安全可靠、可實(shí)現(xiàn)自動(dòng)化控制、使用壽命長等突出優(yōu)點(diǎn)。但是作為一個(gè)新興的行業(yè),鋼板倉在發(fā)展過程中還缺乏系統(tǒng)的管理理念及相應(yīng)的國家規(guī)范。本文基于內(nèi)蒙古宏江集團(tuán)10個(gè)5萬立方米粉煤灰鋼板倉群、山西太鋼集團(tuán)10萬立方米粉煤灰項(xiàng)目、神華國華4個(gè)5萬立方米粉煤灰項(xiàng)目等具體鋼板倉施工工程實(shí)例,并根據(jù)鋼板倉工程的設(shè)計(jì)與施工中存在的問題,重點(diǎn)研究了以下內(nèi)容:(1)環(huán)保是評(píng)價(jià)鋼板倉結(jié)構(gòu)設(shè)計(jì)好壞的一個(gè)重要指標(biāo)。在設(shè)計(jì)中考慮了鋼板倉和自然環(huán)境之間關(guān)系,通過對(duì)鋼板倉結(jié)構(gòu)的環(huán)保設(shè)計(jì),提升建筑品質(zhì)。在鋼板倉結(jié)構(gòu)中采用輕質(zhì)板材等材料,以解決能源緊缺的現(xiàn)象。針對(duì)設(shè)計(jì)鋼板倉存在的加勁肋薄弱和材料性能浪費(fèi)問題,提出應(yīng)采用提高部分加勁肋鋼材標(biāo)號(hào)、采用變截面加勁肋等設(shè)計(jì)方法。(2)建立了某鋼板倉實(shí)際工程的有限元分析模型,并分析了鋼板倉各構(gòu)件的應(yīng)力和變形,解釋了最大應(yīng)力和變形出現(xiàn)的原因,并針對(duì)最大應(yīng)力和變形給出了優(yōu)化設(shè)計(jì)建議。通過優(yōu)化設(shè)計(jì),在充分考慮建筑經(jīng)濟(jì)的前提下,提升鋼板倉結(jié)構(gòu)總體協(xié)調(diào)性,防止出現(xiàn)失穩(wěn)或者坍塌的現(xiàn)象。(3)運(yùn)用有限元的方法,對(duì)比分析了不同幾何尺寸和不同材料屬性的加勁肋對(duì)鋼板倉結(jié)構(gòu)特性的影響。(1)縱向加勁肋的存在可以大幅度的減小鋼板倉壁與基礎(chǔ)接觸位置應(yīng)力以及最大應(yīng)力值的大小;(2)布置縱向加勁肋可以減少鋼板倉壁的應(yīng)力震蕩,使得鋼板倉壁的應(yīng)力平穩(wěn)下降,減少因應(yīng)力變化引起的疲勞;(3)環(huán)向加勁肋可以減小最大應(yīng)力值和下降段應(yīng)力值。
[Abstract]:The design concept of the steel plate warehouse is to solve the storage problem of a large number of powder particles. The design solves the technical problems of large diameter landing storehouse, such as more materials stored on the side, low discharge rate, poor homogenization effect, and the equipment in the storehouse can not be maintained and replaced.At the same time, the steel plate warehouse has the advantages of large reserves, low investment, high construction speed, high outputting rate, good homogenization performance, convenient replacement and maintenance of equipment in the warehouse, small energy consumption, safe and reliable operation, automatic control, long service life, and so on.However, as a new industry, steel warehouse still lacks systematic management concept and corresponding national standards in the process of development.This paper is based on the construction examples of 10 50, 000 cubic meters of fly ash steel silo of Inner Mongolia Hongjiang Group, 100000 cubic meters of fly ash of Shanxi Taiyuan Iron and Steel Group, and 4 50, 000 cubic meters of fly ash of Shenhua.According to the problems existing in the design and construction of steel silo, the following contents: 1: 1) Environmental protection is an important index to evaluate the structural design of steel silo.The relationship between the steel silo and the natural environment is considered in the design, and the building quality is improved by the environmental protection design of the steel silo structure.In order to solve the problem of energy shortage, light plate and other materials are used in steel silo structure.In view of the weakness of stiffening ribs and the waste of material properties in designing steel silo, it is put forward that the finite element analysis model of a steel silo should be established by improving the steel label of partially stiffened ribbed steel and adopting the design method of variable section stiffening rib etc. (2) the finite element analysis model of the actual engineering of a steel silo is established.The stress and deformation of the components of the steel bin are analyzed, the causes of the maximum stress and deformation are explained, and the optimal design suggestions for the maximum stress and deformation are given.Through the optimization design, under the premise of fully considering the building economy, the overall coordination of the steel silo structure is promoted to prevent the phenomenon of instability or collapse. The finite element method is used.The influence of stiffener with different geometric size and different material properties on the structural characteristics of steel silo is analyzed. (1) the existence of longitudinal stiffener can greatly reduce the contact position stress and maximum stress value between the steel silo wall and foundation.The longitudinal stiffening rib can reduce the stress oscillation of the steel silo wall.The stress of the steel silo wall decreases steadily and the fatigue caused by the stress change is reduced. The maximum stress value and the stress value of the descending section can be reduced by the ring stiffening rib.
【學(xué)位授予單位】:煙臺(tái)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TU391
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