Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 60m Span and 0.1 Rise-Span Ratio

2011 ◽  
Vol 368-373 ◽  
pp. 2295-2298
Author(s):  
Hai Wang Li ◽  
Kai Li ◽  
Jing Liu
Keyword(s):  
Dynamic Analysis ◽  
Failure Mode ◽  
Plastic Hinge ◽  
Nonlinear Effects ◽  
Dynamic Responses ◽  
Peak Acceleration ◽  
Displacement Ductility ◽  
Plastic Analysis ◽  
Earthquake Action ◽  
Material Nonlinear

In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 60m span and 0.1 rise-span ratio is carried out under earthquake wave with SAP2000. In the analyses, the geometric and material nonlinear effects are considered at the same time based on the plastic-hinge theory. Under the action of EL wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in horizontally direction is 678gal, and is 624gal when applied in vertically direction; The ratio of its maximal node horizontal and its structural height is 1/961, and its displacement ductility coefficient is 1.14 and the ratio of its bars with plastic hinge appearing when buckling is 2.15% when EL-Centro waves applied on structure in X direction; The ratio of its maximal node vertical and its structural span is 1/660, and its displacement ductility coefficient is 1.17 and the ratio of its bars with plastic hinge appearing when buckling is 6.09% when EL-Centro waves applied in Z direction.

Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 90m Span under Earthquake

2011 ◽  
Vol 94-96 ◽  
pp. 736-739
Author(s):  
Hai Wang Li ◽  
Wei Ping Sun ◽  
Jing Liu
Keyword(s):  
Dynamic Analysis ◽  
Failure Mode ◽  
Plastic Hinge ◽  
Nonlinear Effects ◽  
Dynamic Responses ◽  
Peak Acceleration ◽  
Displacement Ductility ◽  
Plastic Analysis ◽  
Earthquake Action ◽  
Material Nonlinear

In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 90m span and 0.4 rise-span ratio is carried out under earthquake EL-Centro wave with SAP2000. In the analyses, the geometric and material nonlinear effects are considered at the same time based on the plastic-hinge theory. Under the action of EL wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. All the results displays its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in X direction is 381gal, and is 583gal when applied in Z direction; The ratio of its maximal node horizontal and its structural height is 1/290, and its displacement ductility coefficient is 1.43 and the ratio of its bars with plastic hinge appearing when buckling is 3.00% when EL-Centro waves applied on structure in X direction; The ratio of its maximal node vertical and its structural span is 1/567, and its displacement ductility coefficient is 1.48 and the ratio of its bars with plastic hinge appearing when buckling is 2.50% when EL-Centro waves applied in Z direction.

Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 30m Span and 0.2 Rise-Span Ratio

2011 ◽  
Vol 130-134 ◽  
pp. 1101-1104
Author(s):  
Hai Wang Li ◽  
Yi Shi ◽  
Jing Liu
Keyword(s):  
Plastic Hinge ◽  
Nonlinear Effects ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Dynamic Responses ◽  
Peak Acceleration ◽  
Displacement Ductility ◽  
Plastic Analysis ◽  
Earthquake Action ◽  
Material Nonlinear

In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 30m span and 0.2 rise-span ratio is carried out under earthquake action with SAP2000. In the analyses, the geometric and material nonlinear effects are considered at the same time based on the plastic-hinge theory. Under the action of EL wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in X direction is 654gal, and is 1108gal when applied in Z direction; The ratio of its maximal node horizontal displacement and its structural height is 1/102, and its displacement ductility coefficient is 4.215 and the ratio of its bars with plastic hinge appearing when buckling is 15.54% when EL-Centro waves applied on structure in X direction; The ratio of its maximal node vertical displacement and its structural span is 1/994, and its displacement ductility coefficient is 1.338 and the ratio of its bars with plastic hinge appearing when buckling is 11.66% when EL-Centro waves applied in Z direction.

Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 90 m Span and 0.1 Rise-Span Ratio

2011 ◽  
Vol 105-107 ◽  
pp. 1764-1767
Author(s):  
Hai Wang Li ◽  
Xun Zhang ◽  
Jing Liu
Keyword(s):  
Plastic Hinge ◽  
Nonlinear Effects ◽  
Horizontal Displacement ◽  
Dynamic Responses ◽  
Peak Acceleration ◽  
Displacement Ductility ◽  
Plastic Analysis ◽  
Earthquake Action ◽  
Rise Height ◽  
Material Nonlinear

Abstract. In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 90m span and 0.1rise-span ratio is carried out under earthquake wave with SAP2000. In the analyses, the geometric and material nonlinear effects are considered simultaneously based on the plastic-hinge theory. Under the action of EL-centro wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in X direction is 635gal, and is 465gal when applied in Z direction; The ratio of its maximal node horizontal displacement and its rise height is 1/486, and its displacement ductility coefficient is 1.029 and the ratio of its bars with plastic hinge appearing when buckling is 0.7% when EL-Centro waves applied on structure in X direction; The ratio of its maximal node vertical and its structural span is 1/604, and its displacement ductility coefficient is 1.022 and the ratio of its bars with plastic hinge appearing when buckling is 2.8% when EL-Centro waves applied in Z direction.

Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 90m Span and 0.2 Rise-Span Ratio

2011 ◽  
Vol 94-96 ◽  
pp. 539-542
Author(s):  
Hai Wang Li ◽  
Wei Guo ◽  
Jing Liu
Keyword(s):  
Plastic Hinge ◽  
Nonlinear Effects ◽  
Horizontal Displacement ◽  
Dynamic Responses ◽  
Peak Acceleration ◽  
Displacement Ductility ◽  
Plastic Analysis ◽  
Earthquake Action ◽  
Rise Height ◽  
Material Nonlinear

In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 90m span and 0.2 rise-span ratio is carried out under earthquake wave with SAP2000. In the analyses, the geometric and material nonlinear effects are considered simultaneously based on the plastic-hinge theory. Under the action of EL-centro wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in X direction is 550gal, and is 675gal when applied in Z direction; The ratio of its maximal node horizontal displacement and its rise height is 1/635, and its displacement ductility coefficient is 1.262 and the ratio of its bars with plastic hinge appearing when buckling is 2.45% when EL-Centro waves applied on structure in X direction; The ratio of its maximal node vertical and its structural span is 1/99, and its displacement ductility coefficient is 19.207 and the ratio of its bars with plastic hinge appearing when buckling is 9.18% when EL-Centro waves applied in Z direction.

The Seismic Dynamic Response on the Steel Spatial Arch Truss with 60 m Span and 0.4 Rise-Span Ratio

2011 ◽  
Vol 368-373 ◽  
pp. 850-853
Author(s):  
Hai Wang Li ◽  
Jing Jing Guo ◽  
Jing Liu
Keyword(s):  
Plastic Hinge ◽  
Vertical Direction ◽  
Nonlinear Effects ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Dynamic Responses ◽  
Peak Acceleration ◽  
Displacement Ductility ◽  
Earthquake Action ◽  
Material Nonlinear

In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 60 m span and 0.4 rise-span ratio is carried out under earthquake wave with SAP2000. In the analyses, the geometric and material nonlinear effects are considered at the same time based on the plastic-hinge theory. Under the action of EL wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in horizontal direction is 808.5 gal, and is 789.0 gal when applied in vertical direction; The ratio of its maximal node horizontal displacement and its structural height is 1/259, and its displacement ductility coefficient is 1.071; The ratio of its maximal node vertical displacement and its structural span is 1/736, and its displacement ductility coefficient is 1.105.

Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 30 m Span and 0.1 Rise-Span Ratio

2011 ◽  
Vol 105-107 ◽  
pp. 1620-1623
Author(s):  
Hai Wang Li ◽  
Zhi Wei Wang ◽  
Jin Liu
Keyword(s):  
Plastic Hinge ◽  
Vertical Direction ◽  
Nonlinear Effects ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Dynamic Responses ◽  
Peak Acceleration ◽  
Displacement Ductility ◽  
Earthquake Action ◽  
Material Nonlinear

Abstract. In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 30 m span and 0.1 rise-span ratio is carried out under earthquake wave with SAP2000. In the analyses, the geometric and material nonlinear effects are considered at the same time based on the plastic-hinge theory. Under the action of EL wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in horizontal direction is 517 gal, and is 387 gal when applied in vertical direction; The ratio of its maximal node horizontal displacement and its structural height is 1/96, and its displacement ductility coefficient is 2.636; The ratio of its maximal node vertical displacement and its structural span is 1/589, and its displacement ductility coefficient is 1.08.

Dynamic Elasto-Plastic Analysis on the Steel Arch Truss under Earthquake Action

2011 ◽  
Vol 105-107 ◽  
pp. 356-359
Author(s):  
Hai Wang Li ◽  
Cai Hong Guo ◽  
Jing Liu
Keyword(s):  
Dynamic Analysis ◽  
Failure Mode ◽  
Plastic Hinge ◽  
Vertical Direction ◽  
Horizontal Direction ◽  
Peak Acceleration ◽  
Displacement Response ◽  
Development Level ◽  
Plastic Analysis ◽  
Earthquake Action

In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 120m span and 0.1 rise-span ratio is carried out under with SAP2000. The plasticity development level and failure mode of the structure are estimated by the method of increasing the peak acceleration gradually and the plastic hinge theory. The results show that the structure displacement response changed nonlinearly with the increased peak acceleration of the earthquake; Its critical peak acceleration of EL earthquake wave when applied in horizontal direction is 222gal, and is 274gal when applied in vertical direction; The ratio of its maximal node horizontal and its structural height is 1/783 when EL-Centro waves applied on structure in horizontal direction; The ratio of its maximal node vertical and its structural span is 1/751, when EL-Centro waves applied in vertical direction; The failure mode of the truss under the earthquake action is elasto-plastic dynamic buckling.

Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 90 m Span and 0.3 Rise-Span Ratio

2011 ◽  
Vol 94-96 ◽  
pp. 127-130
Author(s):  
Hai Wang Li ◽  
Lu Jiang ◽  
Jing Liu
Keyword(s):  
Plastic Hinge ◽  
Vertical Direction ◽  
Nonlinear Effects ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Dynamic Responses ◽  
Horizontal Direction ◽  
Displacement Ductility ◽  
Earthquake Action ◽  
Material Nonlinear

In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 90 m span and 0.3 rise-span ratio is carried out under earthquake wave with SAP2000. the geometric and material nonlinear effects are considered during the analysis simultaneously based on the plastic hinge theory. Under the action of EL wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in horizontal direction is 363 gal, and is 408 gal when applied in vertical direction; The ratio of its maximal node horizontal displacement and its structural height is 1/796, and its displacement ductility coefficient is 1.06 and the ratio of its bars with plastic hinge appearing when buckling is 0.96% when EL-Centro waves applied on structure in horizontal direction; The ratio of its maximal node vertical displacement and its structural span is 1/1418, and its displacement ductility coefficient is1.12 and the ratio of its bars with plastic hinge appearing when buckling is 1.28% when EL-Centro waves applied in vertical direction.

Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 120 m Span and 0.4 Rise-Span Ratio

2011 ◽  
Vol 105-107 ◽  
pp. 862-866
Author(s):  
Hai Wang Li ◽  
Yu Ma ◽  
Jing Liu
Keyword(s):  
Failure Mode ◽  
Plastic Hinge ◽  
Joint Stiffness ◽  
Nonlinear Effects ◽  
Dynamic Buckling ◽  
Vertical Stiffness ◽  
Truss Model ◽  
Plastic Analysis ◽  
Earthquake Action ◽  
Material Nonlinear

In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 120 m span and 0.4 rise-span ratio is carried out under earthquake EL-Centro wave with SAP2000 about pin-connected model and rigid truss model. The geometric and material nonlinear effects are considered simultaneously based on the plastic-hinge theory. The study shows that the vertical stiffness of the two models is smaller than horizontal stiffness; the failure mode of the pin-connected truss model under the earthquake action is elasto-plastic dynamic buckling, and the failure mode of the rigid truss model under the earthquake action is between the elasto-plastic dynamic buckling and the strength failure.In order to improve the ductility of the truss, we should enhance the design of joint stiffness in actual structures.

Study on Dynamic Failure Behaviors of Steel Doble-Layer Grids (42X42m) Supported by Circumjacent Steel Columns Used in a Gymnasium under Disaster Earthquake Action

2013 ◽  
Vol 275-277 ◽  
pp. 1272-1275
Author(s):  
Yun Jing Niu ◽  
Hai Wang Li ◽  
Jing Liu
Keyword(s):  
Plastic Hinge ◽  
Local Buckling ◽  
Nonlinear Effects ◽  
Dynamic Failure ◽  
Critical Limit ◽  
Displacement Ductility ◽  
Steel Columns ◽  
Strength Failure ◽  
Earthquake Action ◽  
Material Nonlinear

In this paper, the elasto-plastic dynamic analysis on dynamic failure behaviors of steel double-layer grids supported by tridimensional truss columns used in a gymnasium with the function of earthquake victims shelter under disaster earthquake is carried out under EL-centro wave with SAP2000, and the appraisal results on their anti-failure performances are presented under strong earthquake action based on the plastic-hinge theory. In the analyses, the geometric and material nonlinear effects are considered simultaneously based on the plastic-hinge theory. The plastic development level of the rod, the deformed shape and the failure type and the ductility are estimated by plastic hinge principle. The results show that the failure model of the structure under the earthquake wave action is the complicated combination of strength failure and elasto-plastic dynamic local buckling in deferent areas of the structure; When the structure reached its failure critical limit, the development of the plastic hinges is not sufficient and only 5.11% of the rods enter into their plastic stage; Its critical failure peak acceleration of EL earthquake wave when applied in the combination of three directions is 705gal and can be served as earthquake victims shelter in the area of 8 degree seismic fortification; Its displacement ductility coefficient is 2.39,which shows the structure owns good energy dissipation capacity.

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