方鋼管柱-H型梁柱外傳力式節(jié)點抗震性能及參數(shù)分析
發(fā)布時間：2018-07-27 14:49
【摘要】：近年來,鋼框架以其優(yōu)異的性能得到了廣泛的應(yīng)用。梁柱節(jié)點是鋼框架的重要組成部分,關(guān)系到整個鋼框架的安全與穩(wěn)定。由于受到地震災(zāi)害的影響,國內(nèi)外相關(guān)的專家、學(xué)者紛紛致力于鋼框架梁柱節(jié)點抗震性能的研究,提出了多種改進型鋼框架梁柱節(jié)點,并進行了大量的試驗研究與數(shù)值模擬分析。本文研究的方鋼管柱-H型梁柱外傳力式節(jié)點是基于加固工程提出的一種改進型鋼框架梁柱節(jié)點,它通過在無內(nèi)隔板的方鋼管柱相鄰梁翼緣之間增設(shè)傳力板來傳遞內(nèi)力,以實現(xiàn)“柱外傳力”。本文采用ANSYS軟件,進行了傳統(tǒng)節(jié)點、無內(nèi)隔板節(jié)點與柱外傳力式節(jié)點的中柱節(jié)點以及傳統(tǒng)節(jié)點與柱外傳力式節(jié)點的邊柱節(jié)點、角柱節(jié)點的靜力性能有限元分析,并將有限元分析的結(jié)果與靜力性能試驗的結(jié)果進行了對比。在靜力性能試驗與有限元分析的基礎(chǔ)上,進一步對比分析了傳統(tǒng)節(jié)點、無內(nèi)隔板節(jié)點與柱外傳力式節(jié)點的中柱節(jié)點的破壞形態(tài)、耗能能力、承載力、延性、塑性轉(zhuǎn)動能力以及強度與剛度退化特征等抗震性能,并采用ABAQUS軟件對柱外傳力式節(jié)點進行了往復(fù)加載分析,將分析結(jié)果與ANSYS軟件的分析結(jié)果進行了對比。另外,本文建立了柱外傳力式節(jié)點的中柱節(jié)點有限元分析模型,分析了傳力板寬度、厚度以及至鋼柱距離對柱外傳力式節(jié)點抗震性能的影響,確定了以上參數(shù)的合理取值范圍。本文具體的工作內(nèi)容如下:(1)采用ANSYS軟件,模擬單調(diào)加載,得到了傳統(tǒng)節(jié)點、無內(nèi)隔板節(jié)點與柱外傳力式節(jié)點的中柱節(jié)點以及傳統(tǒng)節(jié)點與柱外傳力式節(jié)點的邊柱節(jié)點、角柱節(jié)點的荷載-位移曲線,對比分析了節(jié)點的屈服荷載、極限荷載,并將有限元分析的結(jié)果與靜力性能試驗的結(jié)果進行了對比,結(jié)果表明:與傳統(tǒng)節(jié)點相比,柱外傳力式節(jié)點的承載力有較小幅度的降低;與無內(nèi)隔板節(jié)點相比,柱外傳力式節(jié)點的承載力有顯著提高;有限元模型及分析方法的可靠性得到了驗證。(2)在靜力性能試驗與有限元分析的基礎(chǔ)上,采用ANSYS軟件,模擬低周反復(fù)加載,得到了傳統(tǒng)節(jié)點、無內(nèi)隔板節(jié)點與柱外傳力式節(jié)點的中柱節(jié)點的von Mises應(yīng)力云圖、荷載-位移滯回曲線、骨架曲線、應(yīng)力分布等,對比分析了節(jié)點的破壞形態(tài)、耗能能力、承載力、延性、塑性轉(zhuǎn)動能力、強度與剛度退化特征等抗震性能。采用ABAQUS軟件,對柱外傳力式節(jié)點進行了往復(fù)加載分析,并將分析結(jié)果與ANSYS軟件的分析結(jié)果進行了對比。結(jié)果表明:與傳統(tǒng)節(jié)點相比,柱外傳力式節(jié)點的承載力、耗能能力、延性與塑性轉(zhuǎn)動能力均稍有降低,但仍能達到抗震性能良好的基本標準;與無內(nèi)隔板節(jié)點相比,柱外傳力式節(jié)點的承載力、耗能能力、延性與塑性轉(zhuǎn)動能力等抗震性能均有大幅提高,傳力板的增設(shè)改善了節(jié)點的抗震性能;ABAQUS軟件與ANSYS軟件的分析結(jié)果吻合較好,驗證了節(jié)點抗震性能有限元分析模型及方法的可靠性。(3)采用ANSYS軟件,考慮傳力板寬度、厚度以及至鋼柱距離的不同,建立了柱外傳力式節(jié)點的中柱節(jié)點有限元分析模型,得到了節(jié)點在低周反復(fù)荷載作用下的von Mises應(yīng)力云圖、荷載-位移滯回曲線、骨架曲線、應(yīng)力分布等,對比分析了節(jié)點的破壞形態(tài)、耗能能力、承載力、延性、塑性轉(zhuǎn)動能力、強度與剛度退化特征等抗震性能,確定了傳力板寬度、厚度以及至鋼柱距離的合理取值范圍,結(jié)果表明:為了確保柱外傳力式節(jié)點具備良好的抗震性能,其傳力板寬度宜取梁翼緣寬度的0.75~1.25倍;傳力板厚度宜取梁翼緣厚度的0.75~1.25倍;傳力板至鋼柱距離宜盡可能地小,即傳力板宜盡可能地靠近鋼柱。
[Abstract]:In recent years, the steel frame has been widely used for its excellent performance. The beam column node is an important part of the steel frame, which is related to the safety and stability of the steel frame. Due to the impact of the earthquake disaster, the relevant experts and scholars at home and abroad have committed to the study of the seismic performance of the steel frame beam column joints, and put forward a variety of improvements. A large number of experimental and numerical simulation analyses are carried out on the beam column joints of the steel frame steel frame. The -H beam column external force type joint of the square steel pipe column is an improved steel frame beam column node based on the reinforcement engineering. It transfers internal force by adding the force plate between the adjacent beam flange of the square steel pipe column without inner partition. In this paper, the ANSYS software is used to carry out the finite element analysis of the static performance of the traditional node, the middle column node with no inner partition and the column external force type node, the side column node of the traditional node and the column external force type node, the static performance of the corner column node, and the results of the finite element analysis and static performance test are carried out. On the basis of static performance test and finite element analysis, the failure mode, energy dissipation, bearing capacity, ductility, ductility, ductility, strength and stiffness deactivation characteristics of the traditional node, no inner partition node and column external force type node are compared and analyzed, and the ABAQUS software is used to transfer the column to the column. The analysis results are compared with the analysis results of the ANSYS software. In addition, the finite element analysis model of the column node is established, and the influence of the width, thickness and distance of the steel column on the seismic performance of the column external force type node is analyzed, and the above parameters are determined. The specific contents of this paper are as follows: (1) using ANSYS software to simulate monotonous loading, the traditional node, the middle column node with no inner partition and column external force type node, the side column node of the traditional node and the column external force type node, the load displacement curve of the corner column node are obtained, and the yield of the node is compared and analyzed. The load, the ultimate load, and the results of the finite element analysis are compared with the results of the static test. The results show that compared with the traditional node, the bearing capacity of the column external force type node has a smaller decrease. Compared with the non inner partition node, the bearing capacity of the column external force type node has been significantly improved; the finite element model and the analysis method are also improved. The reliability is verified. (2) on the basis of static performance test and finite element analysis, ANSYS software is used to simulate low cycle repeated loading, and the von Mises stress cloud map, load displacement hysteretic curve, skeleton curve, stress distribution and so on are compared and analyzed. The failure mode, energy dissipation, bearing capacity, bearing capacity, ductility, plastic rotation capacity, strength and stiffness degradation characteristics, and so on. The ABAQUS software is used to carry out the reciprocating loading analysis on the column external force type nodes, and the analysis results are compared with the analysis results of the ANSYS software. The results show that the external force formula of the column is compared with the traditional node. The bearing capacity, energy dissipation capacity, ductility and plastic rotation ability of the joints are slightly reduced, but the basic standards of good seismic performance are still achieved. Compared with the non internal baffle joints, the bearing capacity, energy dissipation capacity, ductility and plastic rotation ability of the column external force type joints are greatly improved, and the addition of the force plate improves the resistance of the joints. The analysis results of ABAQUS software and ANSYS software are in good agreement, and the reliability of the finite element analysis model and method of the seismic behavior of the node is verified. (3) the finite element analysis model of the middle column node of the external force type node is established by using the ANSYS software, considering the difference of the width, thickness and the distance of the steel column, and the node is obtained. The stress cloud map of von Mises, load displacement hysteretic curve, skeleton curve, stress distribution under low cyclic loading, and so on, compare and analyze the damage form, energy dissipation capacity, bearing capacity, ductility, plastic rotation capacity, strength and stiffness degradation characteristics, and determine the width, thickness and distance to steel column of the force plate. The results show that the width of the force plate should take 0.75~1.25 times of the width of the flange of the beam, and the thickness of the force plate should take 0.75~1.25 times of the flange thickness of the beam, and the distance between the force plate and the steel column should be as small as possible, that is, the force plate should be as close as possible to the steel column.
【學(xué)位授予單位】：廣州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU352.11
本文編號：2148164
[Abstract]:In recent years, the steel frame has been widely used for its excellent performance. The beam column node is an important part of the steel frame, which is related to the safety and stability of the steel frame. Due to the impact of the earthquake disaster, the relevant experts and scholars at home and abroad have committed to the study of the seismic performance of the steel frame beam column joints, and put forward a variety of improvements. A large number of experimental and numerical simulation analyses are carried out on the beam column joints of the steel frame steel frame. The -H beam column external force type joint of the square steel pipe column is an improved steel frame beam column node based on the reinforcement engineering. It transfers internal force by adding the force plate between the adjacent beam flange of the square steel pipe column without inner partition. In this paper, the ANSYS software is used to carry out the finite element analysis of the static performance of the traditional node, the middle column node with no inner partition and the column external force type node, the side column node of the traditional node and the column external force type node, the static performance of the corner column node, and the results of the finite element analysis and static performance test are carried out. On the basis of static performance test and finite element analysis, the failure mode, energy dissipation, bearing capacity, ductility, ductility, ductility, strength and stiffness deactivation characteristics of the traditional node, no inner partition node and column external force type node are compared and analyzed, and the ABAQUS software is used to transfer the column to the column. The analysis results are compared with the analysis results of the ANSYS software. In addition, the finite element analysis model of the column node is established, and the influence of the width, thickness and distance of the steel column on the seismic performance of the column external force type node is analyzed, and the above parameters are determined. The specific contents of this paper are as follows: (1) using ANSYS software to simulate monotonous loading, the traditional node, the middle column node with no inner partition and column external force type node, the side column node of the traditional node and the column external force type node, the load displacement curve of the corner column node are obtained, and the yield of the node is compared and analyzed. The load, the ultimate load, and the results of the finite element analysis are compared with the results of the static test. The results show that compared with the traditional node, the bearing capacity of the column external force type node has a smaller decrease. Compared with the non inner partition node, the bearing capacity of the column external force type node has been significantly improved; the finite element model and the analysis method are also improved. The reliability is verified. (2) on the basis of static performance test and finite element analysis, ANSYS software is used to simulate low cycle repeated loading, and the von Mises stress cloud map, load displacement hysteretic curve, skeleton curve, stress distribution and so on are compared and analyzed. The failure mode, energy dissipation, bearing capacity, bearing capacity, ductility, plastic rotation capacity, strength and stiffness degradation characteristics, and so on. The ABAQUS software is used to carry out the reciprocating loading analysis on the column external force type nodes, and the analysis results are compared with the analysis results of the ANSYS software. The results show that the external force formula of the column is compared with the traditional node. The bearing capacity, energy dissipation capacity, ductility and plastic rotation ability of the joints are slightly reduced, but the basic standards of good seismic performance are still achieved. Compared with the non internal baffle joints, the bearing capacity, energy dissipation capacity, ductility and plastic rotation ability of the column external force type joints are greatly improved, and the addition of the force plate improves the resistance of the joints. The analysis results of ABAQUS software and ANSYS software are in good agreement, and the reliability of the finite element analysis model and method of the seismic behavior of the node is verified. (3) the finite element analysis model of the middle column node of the external force type node is established by using the ANSYS software, considering the difference of the width, thickness and the distance of the steel column, and the node is obtained. The stress cloud map of von Mises, load displacement hysteretic curve, skeleton curve, stress distribution under low cyclic loading, and so on, compare and analyze the damage form, energy dissipation capacity, bearing capacity, ductility, plastic rotation capacity, strength and stiffness degradation characteristics, and determine the width, thickness and distance to steel column of the force plate. The results show that the width of the force plate should take 0.75~1.25 times of the width of the flange of the beam, and the thickness of the force plate should take 0.75~1.25 times of the flange thickness of the beam, and the distance between the force plate and the steel column should be as small as possible, that is, the force plate should be as close as possible to the steel column.
【學(xué)位授予單位】：廣州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU352.11
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