發(fā)布時(shí)間：2018-01-12 18:11

  本文關(guān)鍵詞：點(diǎn)支式玻璃幕墻駁接件力學(xué)性能研究及結(jié)構(gòu)優(yōu)化設(shè)計(jì)　出處：《山東建筑大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 點(diǎn)支式 玻璃幕墻 駁接件 力學(xué)性能 優(yōu)化設(shè)計(jì)

【摘要】：點(diǎn)支式玻璃幕墻是一種典型的建筑外維護(hù)結(jié)構(gòu),由玻璃面板、支承結(jié)構(gòu)體系、駁接件和密封材料等組成。點(diǎn)支式玻璃幕墻的玻璃面板通過(guò)駁接件與支承結(jié)構(gòu)連接在一起,駁接件結(jié)構(gòu)力學(xué)性能的優(yōu)劣對(duì)點(diǎn)支式玻璃幕墻的安全性及穩(wěn)定性有著直接影響。目前工程上使用的駁接件普遍存在結(jié)構(gòu)單一、形式笨重的現(xiàn)象,對(duì)駁接件進(jìn)行力學(xué)性能研究及結(jié)構(gòu)優(yōu)化設(shè)計(jì)對(duì)提高點(diǎn)支式玻璃幕墻的安全性、美觀性及經(jīng)濟(jì)性具有非常重要的意義。本文針對(duì)點(diǎn)支式玻璃幕墻的重要結(jié)構(gòu)部件—駁接件開(kāi)展研究工作,分析其在受到荷載作用下的力學(xué)性能,并對(duì)其進(jìn)行疲勞壽命模擬和結(jié)構(gòu)優(yōu)化設(shè)計(jì),主要研究?jī)?nèi)容如下:(1)根據(jù)金屬疲勞性能理論及結(jié)構(gòu)件疲勞壽命的有限元分析方法,借助有限元軟件對(duì)目前工程中常用的駁接爪和駁接頭進(jìn)行靜力特性分析和疲勞壽命模擬,分析得出目前工程中使用的駁接爪存在結(jié)構(gòu)不合理、材料浪費(fèi)的現(xiàn)象比較明顯,且駁接爪疲勞壽命受風(fēng)荷載的影響較大;駁接頭結(jié)構(gòu)相對(duì)合理,疲勞壽命受風(fēng)荷載的影響不大,應(yīng)重點(diǎn)對(duì)駁接爪結(jié)構(gòu)進(jìn)行優(yōu)化設(shè)計(jì)。(2)以現(xiàn)代優(yōu)化設(shè)計(jì)方法理論為基礎(chǔ),結(jié)合有限單元法的思想和應(yīng)用,提出針對(duì)點(diǎn)支式玻璃幕墻駁接件的結(jié)構(gòu)優(yōu)化與尺寸優(yōu)化相結(jié)合的優(yōu)化設(shè)計(jì)方法。1)根據(jù)對(duì)工程中常用駁接爪的力學(xué)特性及疲勞壽命模擬結(jié)果,尋找駁接爪結(jié)構(gòu)優(yōu)化方向。研究分析了X型駁接爪、H型駁接爪和V型駁接爪三類不同結(jié)構(gòu)形式駁接爪的力學(xué)特性和疲勞壽命,分析結(jié)果顯示X型駁接爪綜合性能優(yōu)于H型和V型駁接爪。2)以X型駁接爪為研究對(duì)象,研究駁接爪爪臂截面形狀變化時(shí),對(duì)駁接爪的靜力性能及疲勞壽命的影響。在保證爪臂截面面積相同的情況下,研究分析了爪臂截面形狀為梯形、正方形、圓形、豎矩形和橫矩形時(shí)駁接爪的靜力特性和疲勞壽命,研究結(jié)果表明爪臂截面形狀為圓形的駁接爪綜合性能優(yōu)于其他形狀的駁接爪。3)分別研究爪臂截面形狀為梯形和圓形時(shí)的駁接爪,爪臂尺寸變化時(shí)對(duì)駁接爪的靜力性能和疲勞壽命的影響。研究分析了當(dāng)爪臂尺寸L為200mm、250mm和300mm情況下時(shí)駁接爪的力學(xué)性能和疲勞壽命,結(jié)果表明,隨著尺寸L的增大,駁接爪綜合性能變優(yōu),爪臂截面形狀為圓形的駁接爪其尺寸L=300mm時(shí)具有最好綜合性能。(3)依據(jù)浮頭式駁接頭結(jié)構(gòu)特點(diǎn),設(shè)計(jì)了相對(duì)應(yīng)的沉頭式駁接頭。研究?jī)深惒煌Y(jié)構(gòu)的駁接頭的靜力特性及疲勞壽命,結(jié)果表明沉頭式駁接頭靜力特性較浮頭式駁接頭靜力特性更好。(4)為了驗(yàn)證本文的研究結(jié)論,對(duì)一實(shí)際工程中使用的駁接件進(jìn)行靜力特性分析,設(shè)計(jì)爪臂截面形狀為梯形的H型結(jié)構(gòu)駁接爪和爪臂截面形狀為圓形的X型結(jié)構(gòu)駁接爪,分別與原工程中采用的爪臂截面形狀為梯形的X型結(jié)構(gòu)駁接爪進(jìn)行分析比較,分析結(jié)果一致。
[Abstract]:The point-supported glass curtain wall is a typical external maintenance structure, which is supported by glass panels. The glass panel of the point-supported glass curtain wall is connected with the supporting structure through the connection piece. The mechanical properties of the connection structure have a direct impact on the safety and stability of the point-supported glass curtain wall. The mechanical properties of the connecting parts and the structural optimization design are studied to improve the safety of the point-supported glass curtain wall. Aesthetics and economy are of great significance. In this paper, the mechanical properties of point-supported glass curtain wall, which is an important structural component of glass curtain wall, is studied and its mechanical properties under load are analyzed. The fatigue life simulation and structural optimization design are carried out. The main research contents are as follows: 1) according to the theory of metal fatigue performance and the finite element analysis method of fatigue life of structural parts. With the help of finite element software, the static characteristic analysis and fatigue life simulation of the commonly used gripper and barge joint are carried out, and the results show that the existing structure of the gripper used in the current engineering is unreasonable. The phenomenon of material waste is obvious, and the fatigue life of gripper is greatly affected by wind load. The structure of barge joint is relatively reasonable and the fatigue life is not affected by the wind load. The emphasis should be placed on the optimum design of the clawed structure based on the theory of modern optimization design method. Combined with the idea and application of finite element method. An optimization design method combining structural optimization and dimension optimization for point-supported glass curtain wall connections is proposed. The simulation results of mechanical properties and fatigue life of common joints in engineering are presented. The mechanical properties and fatigue life of three different types of clawing, namely X type and V type, are studied and analyzed. The analysis results show that the comprehensive performance of X type paw is better than that of H type and V type paw. 2) taking X type paw as research object, the change of cross section shape of clawing claw arm is studied. The influence on the static performance and fatigue life of the gripper. Under the condition that the cross section area of the claw arm is the same, the section shape of the claw arm is trapezoid, square and circular. Static characteristics and fatigue life of clawing with vertical rectangle and cross rectangle. The results show that the comprehensive performance of the paw with circular cross section is better than that of the paw with other shapes. 3) the pawl with trapezoidal and circular cross section is studied respectively. The influence of the size change of the claw arm on the static performance and fatigue life of the gripper is studied. The size L of the paw arm L is 200mm. The mechanical properties and fatigue life of the gripper are obtained under the conditions of 250mm and 300mm. The results show that with the increase of the size L, the comprehensive properties of the gripper become better. The pawl with circular section has the best comprehensive performance when its size is 300 mm) according to the structural characteristics of floating head type barge joint. The static characteristics and fatigue life of two kinds of barge joints with different structures are studied. The results show that the static characteristics of the sunk head type barge joint is better than that of the floating head type barge joint. In order to verify the conclusion of this paper, the static characteristic analysis of a practical engineering connection is carried out. The H-shaped structure with trapezoidal cross section and the X-shaped claw with circular cross section are designed. The results are consistent with those of X type structure with trapezoidal cross section used in the original engineering.
【學(xué)位授予單位】：山東建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU382

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