具有內(nèi)外環(huán)桁架的新型張弦網(wǎng)殼結(jié)構(gòu)理論分析與試驗(yàn)研究
發(fā)布時(shí)間：2019-01-17 13:47
【摘要】：本文根據(jù)樂清市體育中心體育館和游泳館采用的結(jié)構(gòu)形式,綜合給出并研討了一種具有內(nèi)外環(huán)桁架的新型內(nèi)外雙重張弦網(wǎng)殼結(jié)構(gòu),且外張弦體系可穿越網(wǎng)殼,內(nèi)環(huán)桁架可采用上弦梁下弦索(梁)的空腹桁架。這種空間結(jié)構(gòu)與傳統(tǒng)輻射式張弦梁結(jié)構(gòu)或弦支網(wǎng)殼相比,可為場館內(nèi)部提供更多的使用空間,增加了后排座位的可視范圍,結(jié)構(gòu)受力更為合理,技術(shù)經(jīng)濟(jì)指標(biāo)優(yōu)異。為更好地理解這種新型空間張弦網(wǎng)殼結(jié)構(gòu)的受力特性并促進(jìn)其工程應(yīng)用,本文從形狀確定、力學(xué)性能、穩(wěn)定性、地震響應(yīng)及模型試驗(yàn)等方面進(jìn)行了系統(tǒng)研究。 第1章總結(jié)了大跨度空間結(jié)構(gòu)的發(fā)展歷程和分類,系統(tǒng)地回顧了張弦梁與環(huán)形平面張力索桁結(jié)構(gòu)的發(fā)展歷史、工程應(yīng)用和研究現(xiàn)狀,并從以上兩種結(jié)構(gòu)的形體對(duì)這種新型張弦網(wǎng)殼結(jié)構(gòu)進(jìn)行了對(duì)比分析和說明。與此同時(shí),對(duì)本文的研究內(nèi)容做了簡單介紹。 第2章歸納和總結(jié)了具有內(nèi)外環(huán)桁架的新型張弦網(wǎng)殼結(jié)構(gòu)的結(jié)構(gòu)形式,從網(wǎng)殼網(wǎng)格布設(shè)、徑向索與網(wǎng)殼徑向梁的相對(duì)位置、網(wǎng)殼的高斯曲率、內(nèi)外環(huán)曲線形狀、及內(nèi)孔采用不同結(jié)構(gòu)的內(nèi)外雙重張弦網(wǎng)殼結(jié)構(gòu)等五個(gè)方面對(duì)這種新型張弦網(wǎng)殼結(jié)構(gòu)進(jìn)行了分類。 第3章對(duì)空間結(jié)構(gòu)形狀確定問題的研究方法進(jìn)行了歸納和總結(jié)。以肋環(huán)型內(nèi)外雙重張弦網(wǎng)殼結(jié)構(gòu)為例,對(duì)這種新型張弦網(wǎng)殼結(jié)構(gòu)的形狀確定問題進(jìn)行了研究。采用局部分析法的思想,從節(jié)點(diǎn)平衡關(guān)系入手,給出了內(nèi)外雙重張弦網(wǎng)殼結(jié)構(gòu)體系的初始預(yù)內(nèi)力簡捷計(jì)算法及其計(jì)算用表；在原有數(shù)值計(jì)算法的基礎(chǔ)上,提出了改進(jìn)的數(shù)值計(jì)算法,并對(duì)計(jì)算過程參數(shù)的選取進(jìn)行了討論。通過算例比較了以上兩種找形方法的計(jì)算結(jié)果,說明了方法的正確性。 第4章系統(tǒng)地研究了新型空間張弦網(wǎng)殼結(jié)構(gòu)的靜力性能,以具有內(nèi)外環(huán)桁架的肋環(huán)型張弦網(wǎng)殼結(jié)構(gòu)為例,利用大型有限元軟件ANSYS進(jìn)行了結(jié)構(gòu)在滿跨和半跨荷載下的靜力性能分析；并對(duì)張拉索矢高、網(wǎng)殼曲率、網(wǎng)殼面內(nèi)徑向支撐、環(huán)形水平桁架以及網(wǎng)殼網(wǎng)格形式等主要參數(shù)對(duì)結(jié)構(gòu)受力性能的影響進(jìn)行了分析。 第5章以具有內(nèi)外環(huán)桁架的肋環(huán)型張弦網(wǎng)殼結(jié)構(gòu)為例,對(duì)結(jié)構(gòu)進(jìn)行了滿跨和半跨荷載作用下結(jié)構(gòu)的穩(wěn)定性能分析；對(duì)張弦網(wǎng)殼結(jié)構(gòu)的張拉索矢高、網(wǎng)殼曲率、網(wǎng)殼面內(nèi)徑向支撐、環(huán)形水平桁架以及網(wǎng)殼網(wǎng)格形式等主要參數(shù)進(jìn)行了分析；討論了缺陷分布及大小對(duì)結(jié)構(gòu)穩(wěn)定性能的影響；比較了肋環(huán)型、葵花型及施威德勒型等三種張弦網(wǎng)殼結(jié)構(gòu)的穩(wěn)定性及經(jīng)濟(jì)性。 第6章以具有內(nèi)外環(huán)桁架的肋環(huán)型張弦網(wǎng)殼結(jié)構(gòu)為例,研究這一結(jié)構(gòu)的動(dòng)力特性和抗震性能。對(duì)該結(jié)構(gòu)進(jìn)行自振特性分析；利用EI-Centro波對(duì)具有內(nèi)外環(huán)桁架的肋環(huán)型張弦網(wǎng)殼結(jié)構(gòu)進(jìn)行了地震響應(yīng)時(shí)程分析；并研究了張拉索矢高、網(wǎng)殼曲率、網(wǎng)殼面內(nèi)徑向支撐以及環(huán)形水平桁架等參數(shù)對(duì)其動(dòng)力性能的影響。 第7章以樂清市體育中心體育館屋蓋結(jié)構(gòu)為背景,按照1：15比例設(shè)計(jì)和制作了縮尺模型。對(duì)其進(jìn)行了下部索桿預(yù)應(yīng)力張拉試驗(yàn)、靜力加載試驗(yàn)、局部斷索(桿)試驗(yàn)和自振特性測試,并對(duì)試驗(yàn)實(shí)測數(shù)據(jù)與理論分析結(jié)果進(jìn)行了比較和分析。 第8章對(duì)本文研究的內(nèi)容進(jìn)行了歸納和總結(jié),指出了具有內(nèi)外環(huán)桁架的新型空間張弦網(wǎng)殼結(jié)構(gòu)仍需要解決的一些問題,明確了今后的研究方向。
[Abstract]:Based on the structure of the sports center and the swimming pool in the city of Leqing, this paper presents and discusses a new inner and outer double-string net shell structure with inner and outer ring frame, and the outer string system can pass through the net shell. The inner ring frame can adopt the hollow frame of the lower chord (beam) of the upper chord beam. Compared with the traditional radiation-type beam-string beam structure or the string-supporting net shell, the space structure can provide more space for the interior of the venue, and the visible range of the rear row seat is increased, the structure stress is more reasonable, and the technical and economic indicators are excellent. In order to better understand the force characteristics of this new type of space-string net shell structure and to promote its engineering application, this paper has made systematic research from the aspects of shape determination, mechanical property, stability, seismic response and model test. Chapter 1 summarizes the development process and classification of large-span spatial structure, and systematically reviews the development history, engineering application and research of the structure of the long-span spatial structure. In this paper, the structure of this new type of tension-string net shell is compared and analyzed from the above two structures. In the meantime, this paper has made a brief introduction to the contents of this paper. In the second chapter, the structure form of a new type of string net shell structure with inner and outer ring frame is summarized and summarized, from the grid cloth, the relative position of the radial cable and the radial beam of the net shell, the Gaussian curvature of the net shell, the inner and outer ring curvature, The shape of the wire and the inner hole are made of five aspects, such as the inner and outer double-string net shell structure with different structure, and the like, The method of the study on the determination of the shape of the space structure is discussed in Chapter 3. In this paper, the shape and shape of the shell structure of this new type of tension-string net shell are determined by the structure of the inner and outer double-string net shell of the rib ring. In this paper, a new method for calculating the initial internal force of the inner and outer double-string net shell structure system and its calculation table are given by using the idea of the local analysis method and the equilibrium relation of the nodes. On the basis of the original numerical calculation method, the improvement is put forward. The Method of Numerical Calculation and the Selection of the Parameters of the Calculation Process The discussion is made. The calculation results of the above two methods of finding are compared by the calculation example, and the formula is described. The validity of the method is presented in Chapter 4. The static performance of a new type of space-string net shell structure is systematically studied in Chapter 4, and the static performance analysis of the structure under the full span and the semi-span load is carried out by using the large-scale finite element software ANSYS. The main parameters such as the height of the tension cable, the curvature of the net shell, the radial support in the surface of the net shell, the annular horizontal frame and the grid form of the net shell are also applied to the stress performance of the structure, The influence is analyzed. Chapter 5 is an example of the structure of the rib ring-shaped string net shell with the inner and outer ring frame. The stability of the structure is analyzed by the full span and the semi-span load of the structure. The height of the tension cable and the curvature of the net shell are high. The main parameters such as the radial support, the annular horizontal frame and the grid form of the net shell are analyzed. The effect of the defect distribution and the size on the stability of the structure is discussed, and the three kinds of string net shell junctions such as the rib ring type, the sunflower type and the Schweedler type are compared. The stability and economy of the structure are presented in Chapter 6. The structure of the ring-shaped cross-section of the rib ring with the inner and outer ring-shaped frame is an example, and the junction is studied. The dynamic characteristics and the anti-seismic performance of the structure are studied. The self-vibration characteristics of the structure are analyzed, and the seismic response is carried out by using the EI-Centro wave to the structure of the rib ring-type tension-string network with the inner and outer ring-shaped frame. The height of the tension cable, the curvature of the net shell, the radial support in the surface of the net shell, the annular horizontal frame, etc. The influence of the parameters on the power performance of the sports center is as follows: 1: 1, based on the structure of the indoor cover of the sports center of Leqing City. The scale model is designed and made in 5 scale. The lower cable-rod pre-stressed tensile test, the static loading test, the partial cable break (rod) test and the self-vibration characteristic test are carried out, and the data and the results of the test are measured. The results of the analysis are compared and analyzed. Chapter 8 summarizes and summarizes the contents of this paper, and points out that the new type of space-string net shell structure with inner and outer ring is still needs to be solved.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU399
本文編號(hào)：2410118
[Abstract]:Based on the structure of the sports center and the swimming pool in the city of Leqing, this paper presents and discusses a new inner and outer double-string net shell structure with inner and outer ring frame, and the outer string system can pass through the net shell. The inner ring frame can adopt the hollow frame of the lower chord (beam) of the upper chord beam. Compared with the traditional radiation-type beam-string beam structure or the string-supporting net shell, the space structure can provide more space for the interior of the venue, and the visible range of the rear row seat is increased, the structure stress is more reasonable, and the technical and economic indicators are excellent. In order to better understand the force characteristics of this new type of space-string net shell structure and to promote its engineering application, this paper has made systematic research from the aspects of shape determination, mechanical property, stability, seismic response and model test. Chapter 1 summarizes the development process and classification of large-span spatial structure, and systematically reviews the development history, engineering application and research of the structure of the long-span spatial structure. In this paper, the structure of this new type of tension-string net shell is compared and analyzed from the above two structures. In the meantime, this paper has made a brief introduction to the contents of this paper. In the second chapter, the structure form of a new type of string net shell structure with inner and outer ring frame is summarized and summarized, from the grid cloth, the relative position of the radial cable and the radial beam of the net shell, the Gaussian curvature of the net shell, the inner and outer ring curvature, The shape of the wire and the inner hole are made of five aspects, such as the inner and outer double-string net shell structure with different structure, and the like, The method of the study on the determination of the shape of the space structure is discussed in Chapter 3. In this paper, the shape and shape of the shell structure of this new type of tension-string net shell are determined by the structure of the inner and outer double-string net shell of the rib ring. In this paper, a new method for calculating the initial internal force of the inner and outer double-string net shell structure system and its calculation table are given by using the idea of the local analysis method and the equilibrium relation of the nodes. On the basis of the original numerical calculation method, the improvement is put forward. The Method of Numerical Calculation and the Selection of the Parameters of the Calculation Process The discussion is made. The calculation results of the above two methods of finding are compared by the calculation example, and the formula is described. The validity of the method is presented in Chapter 4. The static performance of a new type of space-string net shell structure is systematically studied in Chapter 4, and the static performance analysis of the structure under the full span and the semi-span load is carried out by using the large-scale finite element software ANSYS. The main parameters such as the height of the tension cable, the curvature of the net shell, the radial support in the surface of the net shell, the annular horizontal frame and the grid form of the net shell are also applied to the stress performance of the structure, The influence is analyzed. Chapter 5 is an example of the structure of the rib ring-shaped string net shell with the inner and outer ring frame. The stability of the structure is analyzed by the full span and the semi-span load of the structure. The height of the tension cable and the curvature of the net shell are high. The main parameters such as the radial support, the annular horizontal frame and the grid form of the net shell are analyzed. The effect of the defect distribution and the size on the stability of the structure is discussed, and the three kinds of string net shell junctions such as the rib ring type, the sunflower type and the Schweedler type are compared. The stability and economy of the structure are presented in Chapter 6. The structure of the ring-shaped cross-section of the rib ring with the inner and outer ring-shaped frame is an example, and the junction is studied. The dynamic characteristics and the anti-seismic performance of the structure are studied. The self-vibration characteristics of the structure are analyzed, and the seismic response is carried out by using the EI-Centro wave to the structure of the rib ring-type tension-string network with the inner and outer ring-shaped frame. The height of the tension cable, the curvature of the net shell, the radial support in the surface of the net shell, the annular horizontal frame, etc. The influence of the parameters on the power performance of the sports center is as follows: 1: 1, based on the structure of the indoor cover of the sports center of Leqing City. The scale model is designed and made in 5 scale. The lower cable-rod pre-stressed tensile test, the static loading test, the partial cable break (rod) test and the self-vibration characteristic test are carried out, and the data and the results of the test are measured. The results of the analysis are compared and analyzed. Chapter 8 summarizes and summarizes the contents of this paper, and points out that the new type of space-string net shell structure with inner and outer ring is still needs to be solved.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU399
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