scholarly journals SINGLE LAYER LATTICE SHELL WITH PIN JOINTS REINFORCED BY TENSILE MEMBERS

2002 ◽  
Vol 67 (561) ◽  
pp. 137-144
Author(s):  
Tomomi KANEMITSU ◽  
Kenichi SUGIZAKI ◽  
Yoshiro KAI ◽  
Hisanori TANIGUCHI ◽  
Satoshi TAKI ◽  
...  
Keyword(s):  
Single Layer ◽  
Lattice Shell

scholarly journals Study of the Similarities in Scale Models of a Single-Layer Spherical Lattice Shell Structure under the Effect of Internal Explosion

2017 ◽  
Vol 2017 ◽  
pp. 1-13
Author(s):  
Wenbao Wang ◽  
Xuanneng Gao ◽  
Lihui Le
Keyword(s):  
Specific Impulse ◽  
Single Layer ◽  
Original Model ◽  
Scale Model ◽  
Positive Pressure ◽  
Internal Explosion ◽  
Action Time ◽  
Lattice Shell ◽  
Peak Value ◽  
Scaling Coefficient

The similarity of each scale model is verified based on the theory of similarity, deriving the similarity law of internal explosions in a single-layer spherical lattice shell structure via dimensional theory, calculated based on models with scaling coefficients of 1, 0.8, 0.6, 0.4, 0.2, and 0.1. The results show that the shock wave propagation characteristics, the distribution of the overpressure on the inner surface, the maximum dynamic response position, and the position at which the earliest explosion venting occurs are all similar to those of the original model. With the decrease of scaling coefficients, the overpressure peak value of the shock waves of each scale model, and the specific action time of the positive pressure zone, as well as specific impulse are increasingly deviated from the original model values; when the scaling coefficient is 0.1, the maximum relative error between the overpressure peak value at the measurement point and the specific action time of the positive pressure zone as well as the specific impulse and the original model value is 4.9%. Thus, it is feasible to forecast the internal explosion effect of the original structure size model by using the experiment results of the scale model with scaling coefficient λ≥0.1.

Experimental Research on the Stability of Spatial Lattice Shell

2012 ◽  
Vol 204-208 ◽  
pp. 3048-3051
Author(s):  
Gan Tang ◽  
Wei Wei Li ◽  
Lin Feng Yin ◽  
Xiao Ming Guo
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Experimental Research ◽  
Single Layer ◽  
Data Acquisition System ◽  
Stability Behavior ◽  
Initial Imperfections ◽  
Spatial Lattice ◽  
The Stability ◽  
Lattice Shell

In the interest of an understanding to the imperfection stability behavior, a model of single layer spherical lattice shell was designed. The size and the pattern of initial imperfections were entirely measured. Automatic harmony loading control system and data acquisition system was used. The experiment plan, method and results have provided reference significance for the study on the stability of spatial lattice shell. The experimental results and the results of measured imperfections method were compared and analysed in detail. It is verified that measured imperfections method can accurately take into account of the effect of initial imperfections and it can be used for the supplementary checking computations of some important finished structures.

scholarly journals STIFFNESS AND STRENGTH OF HOLLOW-CYLINDRICAL CONNECTIONS FOR SINGLE-LAYER LATTICE SHELL ROOFS

2011 ◽  
Vol 17 (36) ◽  
pp. 525-530
Author(s):  
Toru TAKEUCHI ◽  
Yuma HAYASHI ◽  
Kenichi HAYASHI ◽  
Hiroshi KOJIMA
Keyword(s):  
Single Layer ◽  
Lattice Shell

Dynamic Stability and Ultimate Capacity of Suspended Dome under Earthquakes

2013 ◽  
Vol 639-640 ◽  
pp. 875-881
Author(s):  
Yong Mei Li ◽  
Kun Hu ◽  
Wei Jing Zhang
Keyword(s):  
Dynamic Stability ◽  
Structural Parameters ◽  
Single Layer ◽  
Element Model ◽  
Ultimate Capacity ◽  
Maximum Displacement ◽  
Structural Dynamic ◽  
Long Span ◽  
Small Ratio ◽  
Lattice Shell

Suspended dome is a reasonable and novel type of long-span hybrid spatial structures based upon single-layer spherical lattice shell and tensegrity system. Based upon the structural force-bearing characteristics, the combined finite element model of beam elements, truss elements and cable elements is set up. A method taking the maximum displacement on nodes under earthquake acceleration of each level as dynamic response representative parameter is proposed to study the dynamic stable ultimate capacity of suspended dome by application of the incremental dynamic analysis in combination with B-R kinetic criterion. Furthermore, considering suspended dome has the clear advantage over Single-Layer Spherical Lattice Shell for a structure with a long span and a small ratio of rise to span, the influences of factors such as structural parameters, geometric parameters, and different earthquake input are investigated on dynamic stability for a kiewitt-type suspended dome with a long span and a small ratio of rise to span. Finally of suspended dome some conclusions are obtained such as the initial defects can clearly reduce dynamic stable ultimate capacity, and since the rise-span ratio, pre-stressing level and cross section area are not monotonous as variety to the structural dynamic stability, they should be optimized to enhance or improve the structural dynamic stability, which can be rules for engineering design.

scholarly journals The Stability of New Single-Layer Combined Lattice Shell Based on Aluminum Alloy Honeycomb Panels

2017 ◽  
Vol 7 (11) ◽  
pp. 1150 ◽  
Author(s):  
Caiqi Zhao ◽  
Yangjian Zhao ◽  
Jun Ma
Keyword(s):  
Aluminum Alloy ◽  
Single Layer ◽  
The Stability ◽  
Lattice Shell ◽  
Aluminum Alloy Honeycomb

Stability Analysis of the Radiant Cable Suspendome

2012 ◽  
Vol 226-228 ◽  
pp. 1185-1189
Author(s):  
Jian Kang ◽  
Xiang Yu Liu
Keyword(s):  
Stability Analysis ◽  
Single Layer ◽  
Hybrid Structure ◽  
Buckling Analysis ◽  
Nonlinear Buckling ◽  
Geometrical Imperfection ◽  
String Structure ◽  
The Stability ◽  
Nonlinear Buckling Analysis ◽  
Lattice Shell

Radiant cable suspendome based on single-layer lattice shell is proposed in this paper whose cable-strut system is like that of Radiant Beam String Structure, the purpose of this paper is to do stability analysis of the structure.The linear buckling analysis of the hybrid structure and the single-layer lattice shell who has the same geometry parameters is carried out, we can preliminarily understand the stability of the hybrid structure. At the same time, nonlinear buckling analysis is carried out to study the stability of the hybrid structure under different rise-span ratios, different prestress level and half-span load. The results show that the introduction of prestressed cables greatly improve the structure's stability and reduce the structure sensitivity to original geometrical imperfection.

Vertical and Horizontal Seismic Response Analyses of Long-Span and Single-Layer Spherical Lattice Shell Structure

2014 ◽  
Vol 602-605 ◽  
pp. 602-605
Author(s):  
Jin Sheng He ◽  
She Liang Wang
Keyword(s):  
Vibration Control ◽  
Shell Structure ◽  
Response Spectrum ◽  
Single Layer ◽  
Internal Force ◽  
Seismic Load ◽  
Seismic Responses ◽  
Long Span ◽  
Current Design ◽  
Lattice Shell

The dynamic characteristics of 80 m single-layer spherical lattice shell structure are analyzed to control its vibration under seismic load. Through the response spectrum curve of current design specification, the analyses for the vertical and horizontal seismic responses of the single-layer spherical lattice shell structure are made by CQC, and the displacement response of the nodes and internal force of the rods unit are calculated respectively. The calculation results show that the vertical and horizontal seismic responses of the long-span lattice shell structure are in great difference, and should be performed in vibration control at the same time, which could provide certain references for the seismic design and vibration control of single-layer spherical lattice shell structure.

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