Ultimate Bearing Capacity Analysis of Schwedler Suspendome

2011 ◽  
Vol 255-260 ◽  
pp. 4197-4201 ◽  
Author(s):  
Feng Li ◽  
Xiang Bing Min
Keyword(s):  
Bearing Capacity ◽  
Structural Parameters ◽  
Geometrical Nonlinearity ◽  
Single Layer ◽  
Space Structure ◽  
Ultimate Bearing Capacity ◽  
Practical Engineering ◽  
Double Space ◽  
Cable Dome ◽  
Ultimate Load Carrying Capacity

Prestress suspendome structure is a new two-double space structure system, which is composed of single-layer spherical reticulated shells and cable-strut tensile structure, and taking full advantages of two systems. Compared to single-layer shells, stiffness and stability are improved effectively. Compared to cable dome, designing, constructing and joint treatments are simplified much more easily. In this paper, taking geometrical nonlinearity and material nonlinearity into account, the stable ultimate bearing capacity of Schwedler suspendome was analyzed theoretically by employing a nonlinear finite element method. Structural parameters of the suspendome, such as prestresses of cables, heights of struts, rise-span ratio and cable layout, which influence the structural stable ultimate load-carrying capacity, having been analyzed by employing the two-double computational mode of Schwedler suspendome of 40m span. Some valuable and reasonable conclusions are drawn for practical engineering design by theoretically analysis.

Prediction of Ultimate Bearing Capacity of Half-Screwed Pile by Integrated Exponential Function Model

2013 ◽  
Vol 353-356 ◽  
pp. 881-885
Author(s):  
Jian Xiong Liu ◽  
Yan Yan Gao ◽  
Xiu Hua Li
Keyword(s):  
Bearing Capacity ◽  
Functional Model ◽  
Ultimate Bearing Capacity ◽  
Model Solution ◽  
Least Square ◽  
Single Pile ◽  
Engineering Research ◽  
Exponential Functional ◽  
Practical Engineering ◽  
Difference Form

This study fitted the measured loading-settlement curve of half-screwed pilewith least square model solution of difference form of integrated exponential functional model, and predict ultimate bearing capacity of half-screwed pile according to the fitted curve of maximum curvature point. Combined with practical engineering research, the study explored the feasibility, rationality and limitations of predicting the half-screwed single pile ultimate bearing capacity with least square model solution of difference form of integrated exponential functional model, and provided the theoretical basis for the popularization and application of the half-screwed pile.

Stability Analysis of Plate-Cone Reticulated Shell

2011 ◽  
Vol 71-78 ◽  
pp. 3760-3763
Author(s):  
Xing Wang
Keyword(s):  
Stability Analysis ◽  
Bearing Capacity ◽  
Double Layer ◽  
Geometrical Nonlinearity ◽  
Ultimate Bearing Capacity ◽  
Arc Length ◽  
Stability Behavior ◽  
Destruction Mechanism ◽  
The Stability ◽  
Complete Process

This paper carries out stability analysis on plate-cone reticulated shell considering geometrical nonlinearity of cooperating work between plates and members. In this paper, stability behavior of different kinds of plate-cone reticulated shell considering geometrical nonlinearity is analyzed by using the software ANSYS, tracking complete process balance path for load-displacement by using arc-length method, the several problems of plate-cone reticulated shell are studied, such as destruction mechanism, structural ductility, ultimate bearing capacity and strength reserve, some important conclusions are obtained. After analyzing the stability behavior of double-layer reticulated shell by ANSYS and comparing with plate-cone reticulated shell, it is proved that plate-cone reticulated shell is more advantageous than double-layer reticulated shell in the aspect of stability behavior.

Geometry Optimization and Engineering Applications of Transmission Tower Foundation in the Slope

2013 ◽  
Vol 423-426 ◽  
pp. 1243-1247
Author(s):  
Bin Peng ◽  
Xing Yun Wang ◽  
Yu Wang ◽  
He Huang
Keyword(s):  
Regression Analysis ◽  
Bearing Capacity ◽  
Geometry Optimization ◽  
Ultimate Bearing Capacity ◽  
Nonlinear Regression Analysis ◽  
Transmission Tower ◽  
Engineering Applications ◽  
Practical Engineering ◽  
Tower Foundation ◽  
Pile Length

Combining with practical engineering, geometry optimization and engineering applications of transmission tower foundation in the slope is researched by using the finite-difference software FLAC3D. The variation of the pullout, vertical and horizontal ultimate bearing capacity with the diameter and length of the pile is analyzed. And optimization program of actual project is given. Research shows that when the pile length is constant, the variation of the pullout and vertical ultimate bearing capacity is increasing with the diameter increasing significantly and the horizontal ultimate bearing capacity is not significant. When the diameter is constant, the pullout, vertical and horizontal ultimate bearing capacity is increasing with the length increasing significantly. By analyzing nonlinear regression analysis of calculation data, the formula of the ultimate bearing capacity is carried out, which can consider the different pile diameters and lengths. When the gradient and distance of slopes is constant, the pullout, vertical and horizontal ultimate bearing capacity can be carried out with the formula, which can provide a reference to specification revision and engineering.

Nonlinear Buckling Analysis of Long-Span Suspended Latticed Intersected Cylindrical Shell

2014 ◽  
Vol 919-921 ◽  
pp. 169-176 ◽  
Author(s):  
Ming Liang Zhu ◽  
Yan Sun
Keyword(s):  
Cylindrical Shell ◽  
Bearing Capacity ◽  
Single Layer ◽  
Ultimate Bearing Capacity ◽  
Buckling Analysis ◽  
Nonlinear Buckling ◽  
Long Span ◽  
The Stability ◽  
Nonlinear Buckling Analysis ◽  
Material Nonlinear

The Suspended Latticed Intersected Cylindrical Shell (SLICS) is a new structural system, composed by the single layer Latticed Intersected Cylindrical Shell (LICS) and the prestressed cable-strut system. Mechanical properties of this structure were investigated through nonlinear buckling analysis by the consistent imperfect buckling analysis method, compared with the single layer LICS. Structure parameters including prestress level, member section, length of bar, rise-span ratio, obliquity were analyzed. And the effect of material nonlinearity on the stability was studied. Results show that the ultimate bearing capacity of the SLICS is improved as the introduction of prestress. However the prestress level has a limited impact on the ultimate bearing capacity. And the material nonlinear is very important to the stability of the SLICS.

Research on the Influence of the P-δ Effect to Ultimate Bearing Capacity of Single Layer Latticed Shell Structures

2012 ◽  
Vol 193-194 ◽  
pp. 872-875
Author(s):  
Wen Feng Du ◽  
Zhi Yong Zhou
Keyword(s):  
Bearing Capacity ◽  
Shell Structure ◽  
Single Layer ◽  
Ultimate Bearing Capacity ◽  
Shell Structures ◽  
High Rise ◽  
Element Simulation

The ultimate bearing capacity of the single-layer latticed shell structure, calculated without considering the single-member instability(P-δ effect), was not consistent to the actual value of ultimate bearing capacity in practice. It was studied in detail that the ultimate bearing capacity of the single-layer latticed shell structure considering the member instability by proposing a method of multi-element simulation. The value of the ultimate bearing capacity decreased by 15.6% after considering the member instability taking a single-layer latticed shell structure with a 40m span as example. The analysis results show that the value of ultimate bearing capacity is significantly affected for the single-layer latticed shell structure with a small span and high rise-span ratio

Study on the Static Stability and the Ultimate Bearing Capacity of Vierendeel Latticed Shells

2011 ◽  
Vol 94-96 ◽  
pp. 868-871
Author(s):  
Wen Feng Du ◽  
Zhi Yong Zhou ◽  
Fu Dong Yu
Keyword(s):  
Finite Element Method ◽  
Bearing Capacity ◽  
Carrying Capacity ◽  
Shell Structure ◽  
Single Layer ◽  
Static Stability ◽  
Ultimate Bearing Capacity ◽  
The Finite Element Method ◽  
The Stability ◽  
Lattice Shell

Studies on the static stability and the ultimate bearing capacity of vierendeel latticed shells have been carried out. The buckling modal and the whole course of instability are shown using the Finite Element Method. The ultimate bearing capacity is compared with that of the single-layer latticed shell structure. The results show that the ultimate bearing capacity of the vierendeel latticed shells is 2.87 times more than that of the single-layer lattice shell in the condition of consuming the same steel. The vierendeel latticed shell structure not only has the advantages of concision and transparency like the single layer latticed shell structure, but also has the stability and carrying capacity like double-layer latticed shell structure.

Dynamic Stability Analysis of Steel Concrete Composite of Ribbed Shell under Stepped Loads

2013 ◽  
Vol 712-715 ◽  
pp. 815-821 ◽  
Author(s):  
Yu Zhen Chang ◽  
Yong Gang Kang
Keyword(s):  
Stability Analysis ◽  
Bearing Capacity ◽  
Failure Modes ◽  
Initial Imperfection ◽  
Space Structure ◽  
Ultimate Bearing Capacity ◽  
Dynamic Failure ◽  
Ribbed Shell ◽  
New Space ◽  
Parameters Analysis

A systemically study on the new space structure steel - concrete composite ribbed shell is made, which is loaded by stepped load. The ultimate bearing capacity and failure modes are investigated based on the characteristic response indicators. In the foundation of large number of parameters analysis, the influence of the span ratio, span, boundary conditions and initial imperfection on the ultimate bearing capacity and instable dynamic failure are discussed in details. All the results will provide mass of data to the investigation of failure mechanism and the property under complex dynamical loads.

Research on Ultimate Bearing Capacity of Single-Layer Cylinder Latticed Shells Considering the Influence of P-δ Effect

2012 ◽  
Vol 238 ◽  
pp. 589-592
Author(s):  
Wen Feng Du ◽  
Zhi Yong Zhou ◽  
Pei Zhu
Keyword(s):  
Bearing Capacity ◽  
Shell Structure ◽  
Single Layer ◽  
Ultimate Bearing Capacity ◽  
High Rise ◽  
Element Simulation

The ultimate bearing capacity of the single-layer cylinder latticed shell structure, calculated without considering the single-member instability(P-δ effect), was not consistent to the actual value of ultimate bearing capacity in practice. The ultimate bearing capacity of the single-layer cylinder latticed shell structure was studied in detail by proposing a method of multi-element simulation, considering the member instability. The value of the ultimate bearing capacity decreased by 1.2% after considering the member instability taking a single-layer latticed shell structure with a 40m span as example. The analysis results show that the value of ultimate bearing capacity is tiny affected for the single-layer cylinder latticed shell structure with a small span and high rise-span ratio

Stability Analysis for a Latticed Shell Based on ABAQUS

2014 ◽  
Vol 578-579 ◽  
pp. 141-145
Author(s):  
Yun Ying Ma ◽  
Jin Duan ◽  
Hong Shao
Keyword(s):  
Stability Analysis ◽  
Bearing Capacity ◽  
Nonlinear Stability ◽  
Shell Structure ◽  
Geometric Nonlinearity ◽  
Single Layer ◽  
Ultimate Bearing Capacity ◽  
Structural Performance ◽  
Damage Mode ◽  
The Stability

In this paper, the stability analysis of a single-layer latticed shell structure is presented using ABAQUS, with the geometric nonlinearity considered. The load-displacement curves are calculated according to the elastic and elasto-plastic hypothesis respectively. The ultimate bearing capacity of the structure and its conceivable damage mode are estimated. Finally, the nonlinear stability of this structure is assecced and the further suggstions for improving the structural performance are presented.

Sign in / Sign up

Export Citation Format

Share Document