預(yù)制裝配式鋼筋混凝土一體化剪力墻體抗震性能研究
發(fā)布時(shí)間：2018-07-26 16:55
【摘要】：為了降低較長剪力墻體的抗側(cè)剛度、減輕自重,并提高工業(yè)化程度,本文針對(duì)預(yù)制裝配式剪力墻結(jié)構(gòu),提出了以內(nèi)置空心管的填充墻與實(shí)體剪力墻墻肢一體化澆筑生產(chǎn)、安裝施工的新型預(yù)制一體化剪力墻結(jié)構(gòu)。具體的做法是:預(yù)制鋼筋混凝土剪力墻結(jié)構(gòu)澆筑成型前,在填充墻位置預(yù)先等距的鋪設(shè)空心管內(nèi)模,并在兩面設(shè)置鋼筋網(wǎng)片,填充墻與結(jié)構(gòu)墻一起澆筑預(yù)制從而形成了預(yù)制一體化剪力墻。針對(duì)該類墻體的抗震性能展開了一系列的試驗(yàn)研究和有限元分析,具體研究內(nèi)容如下:1.設(shè)計(jì)并制作了5個(gè)外形尺寸、墻肢與連梁配筋相同而填充墻做法不同的足尺雙肢剪力墻試件,通過擬靜力試驗(yàn)對(duì)無填充、砌塊砌體填充和一體化施工三種填充墻做法進(jìn)行了抗震性能的研究與比較,總結(jié)了這三類墻體結(jié)構(gòu)的破壞形態(tài)、受力特點(diǎn)、承載與變形能力、剛度、延性、耗能能力等方面的特點(diǎn)。試驗(yàn)結(jié)果表明:預(yù)制一體化剪力墻試件相比于無填充墻試件和砌體填充試件,其剛度和水平抗剪承載力有明顯的提高,同時(shí)具有良好的延性、耗能能力與抗震性能。2.基于Open SEES平臺(tái),選用分層殼單元和相應(yīng)的材料本構(gòu)模型,對(duì)5個(gè)剪力墻試驗(yàn)試件進(jìn)行有限元模擬驗(yàn)證,獲得了與試驗(yàn)結(jié)果吻合程度較好的滯回曲線、骨架曲線以及墻肢縱筋應(yīng)變變化曲線。3.根據(jù)擬靜力試驗(yàn)和有限元分析探究了增大空心管管徑、設(shè)置聚氨酯泡沫隔斷和削弱鋼筋網(wǎng)片等構(gòu)造措施對(duì)墻體剛度和承載力的影響規(guī)律,給出了合理的構(gòu)造方案。4.選取不同的填充墻寬度、開縫數(shù)、混凝土強(qiáng)度、墻肢配筋和軸壓比等參數(shù),進(jìn)行基于Open SEES的有限元模擬分析,獲得上述參數(shù)對(duì)預(yù)制一體化剪力墻體水平抗剪承載力和剛度的影響規(guī)律。5.基于試驗(yàn)以及有限元參數(shù)分析的結(jié)果,提出了預(yù)制一體化剪力墻結(jié)構(gòu)的水平抗剪承載力和剛度計(jì)算方法:對(duì)于一體化開縫剪力墻,可以分別計(jì)算墻肢和填充墻的抗剪承載力和剛度,并進(jìn)行疊加得到。無開縫的一體化剪力墻可以按照整體墻,簡化成工字型截面進(jìn)行抗剪承載力和剛度的計(jì)算。
[Abstract]:In order to reduce the lateral stiffness of the long shear wall, reduce the deadweight, and improve the industrialization degree, this paper puts forward the integrated pouring production of the infilled wall and the solid shear wall limb with the built-in hollow pipe, aiming at the prefabricated shear wall structure. Installation of a new type of prefabricated integrated shear wall structure. The concrete method is: before the precast reinforced concrete shear wall structure is put into shape, the hollow pipe internal mold is laid in the filling wall position in advance, and the reinforcement mesh is set on both sides. Filling walls and structural walls are cast together to form prefabricated integrated shear walls. A series of experimental research and finite element analysis are carried out on the seismic behavior of this kind of wall. The specific research contents are as follows: 1. In this paper, five full-scale shear wall specimens with the same reinforcement and different filling methods are designed and fabricated, and the non-filled specimens are tested by pseudo-static test. This paper studies and compares the seismic behavior of three kinds of infilled walls with masonry filling and integrated construction, and summarizes the failure patterns, mechanical characteristics, bearing capacity and deformation capacity, stiffness, ductility of these three kinds of wall structures. Energy dissipation capacity and other aspects of the characteristics. The experimental results show that the stiffness and horizontal shear bearing capacity of prefabricated integrated shear wall specimens are significantly higher than those of unfilled wall specimens and masonry filled specimens. At the same time, the precast shear wall specimens have good ductility, energy dissipation capacity and seismic performance of 0.2. Based on the Open SEES platform, the layered shell element and the corresponding material constitutive model are selected to simulate five shear wall test specimens by finite element method, and the hysteretic curves are obtained, which are in good agreement with the experimental results. Skeleton curve and strain variation curve of longitudinal reinforcement of wall limb. Based on the pseudostatic test and finite element analysis, this paper probes into the influence of structural measures such as increasing the diameter of hollow pipe, setting polyurethane foam partition and weakening reinforcement mesh on the stiffness and bearing capacity of wall, and gives the reasonable construction scheme. The finite element simulation analysis based on Open SEES is carried out by selecting different parameters such as the width of the filled wall, the number of slits, the strength of concrete, the reinforcement of the wall limb and the axial compression ratio, etc. The influence of above parameters on horizontal shear bearing capacity and stiffness of precast integrated shear wall is obtained. Based on the results of experiment and finite element parameter analysis, the calculation method of horizontal shear bearing capacity and stiffness of precast integrative shear wall structure is presented. The shear bearing capacity and stiffness of the wall limb and the infilled wall can be calculated, and the superposition results can be obtained. The integral shear wall without slit can be simplified into I-shaped section according to the integral wall to calculate the shear capacity and stiffness.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU352.11;TU375
本文編號(hào)：2146665
[Abstract]:In order to reduce the lateral stiffness of the long shear wall, reduce the deadweight, and improve the industrialization degree, this paper puts forward the integrated pouring production of the infilled wall and the solid shear wall limb with the built-in hollow pipe, aiming at the prefabricated shear wall structure. Installation of a new type of prefabricated integrated shear wall structure. The concrete method is: before the precast reinforced concrete shear wall structure is put into shape, the hollow pipe internal mold is laid in the filling wall position in advance, and the reinforcement mesh is set on both sides. Filling walls and structural walls are cast together to form prefabricated integrated shear walls. A series of experimental research and finite element analysis are carried out on the seismic behavior of this kind of wall. The specific research contents are as follows: 1. In this paper, five full-scale shear wall specimens with the same reinforcement and different filling methods are designed and fabricated, and the non-filled specimens are tested by pseudo-static test. This paper studies and compares the seismic behavior of three kinds of infilled walls with masonry filling and integrated construction, and summarizes the failure patterns, mechanical characteristics, bearing capacity and deformation capacity, stiffness, ductility of these three kinds of wall structures. Energy dissipation capacity and other aspects of the characteristics. The experimental results show that the stiffness and horizontal shear bearing capacity of prefabricated integrated shear wall specimens are significantly higher than those of unfilled wall specimens and masonry filled specimens. At the same time, the precast shear wall specimens have good ductility, energy dissipation capacity and seismic performance of 0.2. Based on the Open SEES platform, the layered shell element and the corresponding material constitutive model are selected to simulate five shear wall test specimens by finite element method, and the hysteretic curves are obtained, which are in good agreement with the experimental results. Skeleton curve and strain variation curve of longitudinal reinforcement of wall limb. Based on the pseudostatic test and finite element analysis, this paper probes into the influence of structural measures such as increasing the diameter of hollow pipe, setting polyurethane foam partition and weakening reinforcement mesh on the stiffness and bearing capacity of wall, and gives the reasonable construction scheme. The finite element simulation analysis based on Open SEES is carried out by selecting different parameters such as the width of the filled wall, the number of slits, the strength of concrete, the reinforcement of the wall limb and the axial compression ratio, etc. The influence of above parameters on horizontal shear bearing capacity and stiffness of precast integrated shear wall is obtained. Based on the results of experiment and finite element parameter analysis, the calculation method of horizontal shear bearing capacity and stiffness of precast integrative shear wall structure is presented. The shear bearing capacity and stiffness of the wall limb and the infilled wall can be calculated, and the superposition results can be obtained. The integral shear wall without slit can be simplified into I-shaped section according to the integral wall to calculate the shear capacity and stiffness.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU352.11;TU375
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