Numerical out-of-plane stability analysis of long span timber trusses with focus on buckling length calculations

2020 ◽  
Vol 204 ◽  
pp. 109670
Author(s):  
Petr Sejkot ◽  
Sigurdur Ormarsson ◽  
Johan Vessby ◽  
Bo Källsner
Keyword(s):  
Stability Analysis ◽  
Long Span ◽  
Out Of Plane ◽  
Buckling Length

Seismic Response Analysis of CFST Arch Bridge Considering Input Earthquake Characteristics

2011 ◽  
Vol 255-260 ◽  
pp. 962-966
Author(s):  
Fan Xing ◽  
Lin Zhao ◽  
Ya Zhe Xing
Keyword(s):  
Seismic Response ◽  
Research Result ◽  
Steel Tube ◽  
Response Analysis ◽  
Vibration Period ◽  
Arch Bridge ◽  
Near Fault ◽  
Long Span ◽  
Cfst Arch Bridge ◽  
Out Of Plane

In view of huge destructibility of the near-fault ground motions, structures with long natural vibration period are liable to fall into nonlinear reaction stage. Based on a full understanding of the near-fault seismic spectrum characteristics, the out-of-plane seismic response of a long span concrete-filled steel tube (CFST) arch bridge was studied in depth, and the research result could offer a reference for near-fault aseismic design.

The Out-of-Plane Stability Analysis of Crane Jib with Two Symmetric Drawbars

2013 ◽  
Vol 446-447 ◽  
pp. 469-473
Author(s):  
Nian Li Lu ◽  
Ce Chen ◽  
Shi Ming Liu
Keyword(s):  
Differential Equation ◽  
Stability Analysis ◽  
Boundary Conditions ◽  
Characteristic Equation ◽  
Critical Condition ◽  
Design Rules ◽  
Special Cases ◽  
Out Of Plane

The out-of-plane stability of the crane jib with two symmetric drawbars is studied. Differential equation with two non-conservative forces caused by the two symmetric drawbars is established in critical condition. According to the boundary conditions and proper parameter processing, the out-of-plane characteristic equation is obtained for the crane jib. Comparison with the ANSYS results verified the correctness of the method. And special cases are given to show the consistency of the method used in this paper and that with one drawbar given by the Chinese Design Rules for crane (GB3811-2008). The contribution of the angle between two symmetric drawbars to the out-of-plane stability of the crane jib is also discussed. The results show that, the crane jib with two symmetric drawbars has higher out-of-plane stability than that with one drawbar, and the increase of the angle between the two symmetric drawbars will lead to the significant increase of the out-of-plane stability of the crane jib.

Stability analysis of an electrostatically actuated out of plane MEMS structure

2019 ◽  
Vol 25 (9) ◽  
pp. 3387-3397 ◽  
Author(s):  
Hadi Azimloo ◽  
Ghader Rezazadeh ◽  
Rasoul Shabani ◽  
Mehrdad Sheikhlou ◽  
Hamed Sadeghian Marnani
Keyword(s):  
Stability Analysis ◽  
Electrostatically Actuated ◽  
Out Of Plane

Stability Analysis during Concrete Pumping for a CFST Arch Bridge Rib

2012 ◽  
Vol 446-449 ◽  
pp. 1199-1202
Author(s):  
Yan Jiang Chen ◽  
Xiao Qiang Ren ◽  
Jin Jie Wang ◽  
Da Peng Gu
Keyword(s):  
Stability Analysis ◽  
Modeling Method ◽  
Construction Control ◽  
Construction Process ◽  
Fem Model ◽  
Arch Bridge ◽  
Long Span ◽  
Cfst Arch Bridge ◽  
Concrete Pumping ◽  
The Stability

Abstract. This paper lists the problems during the stability analysis of long span CFST arch bridge and the corresponding modeling method. Based on the construction control of an orthotropic long span CFST arch bridge, a FEM model had been established to analysis the stability of its rib during the concrete pumping. The conclusion shows significant importance to the bridge’s construction process.

Out-of-Plane Stability Analysis of Plane Tubular Trusses

2014 ◽  
Vol 578-579 ◽  
pp. 1575-1579
Author(s):  
Zheng Hua Huang ◽  
Qi Lin Zhang
Keyword(s):  
Stability Analysis ◽  
Finite Elements ◽  
Engineering Design ◽  
Numerical Examples ◽  
Beam Elements ◽  
Nonlinear Finite Elements ◽  
Spatial Beam ◽  
Stiffness Model ◽  
Out Of Plane ◽  
Finite Elements Model

To carry out of out-of-plane stability analysis of plane tubular trusses, nonlinear finite elements model based on spatial beam elements and simplified connection elements is deduced. To verifying the feasibility of the simplified joints stiffness model, numerical examples are build and results shows that the simplified finite elements model is comparatively accurate , and could be used in engineering design.

Floating Stability Analysis of Steel Boxed Cofferdam of Dongtinghu Long-Span Bridge

2013 ◽  
Vol 395-396 ◽  
pp. 897-900
Author(s):  
Hai Qing Zhu ◽  
Xie Dong Zhang
Keyword(s):  
Stability Analysis ◽  
Deep Water ◽  
Water Resistance ◽  
Load Capacity ◽  
Engineering Application ◽  
Bridge Piers ◽  
Construction Technique ◽  
Long Span ◽  
Long Span Bridge ◽  
Complete Resistance

With the development of highway and railway, the construction technique of bridge is developing at a lighting speed. Because of the need to across the river and channel, which span getting more and more large, the foundation of the bridge piers should be more and more stable. Lead to raising the load capacity of the pier foundation. The technique cofferdam construction is an effective mean to solve large foundation problems in deep water. And comparing the empirical value to the simulating value, the results demonstrate FLUENT is a reliable program to simulate the water resistance. This paper gives a model for complete resistance calculation and stability analysis of floating steel cofferdam which will provide a template for similar analysis of engineering application.

Sign in / Sign up

Export Citation Format

Share Document